CN101522466B - Seat for vehicle - Google Patents
Seat for vehicle Download PDFInfo
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- CN101522466B CN101522466B CN2007800376323A CN200780037632A CN101522466B CN 101522466 B CN101522466 B CN 101522466B CN 2007800376323 A CN2007800376323 A CN 2007800376323A CN 200780037632 A CN200780037632 A CN 200780037632A CN 101522466 B CN101522466 B CN 101522466B
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- support portion
- junction surface
- navigation
- path
- base portion
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Abstract
A headrest moving mechanism (10) includes linking members (12, 12) that links a support portion (4A) and a headrest base portion (4C) to each other; and elongated holes (11H, 11H) formed in the headrest base portion (4C). The elongated holes (11H, 11H) slidably receive a connection shaft (13A) provided to the support portion (4A), thereby determining a postural position of the support portion (4A). The elongated holes (11H, 11H) are shaped so as to move the support portion (4A) forwardly and upwardly with respect to the headrest base portion (4C) from an initial position in a time before the vehicle back-side collision happens to a collision preparatory position as the linking members (12, 12) are rotated.
Description
Technical field
The present invention relates to a kind of vehicle seat used.More particularly, the present invention relates to a kind ofly have the support portion that when detecting vehicle rear-side collision (vehicle back-side collision), can be used in the headrest of the head that supports seated person and move, thereby make head rest moving mechanism vehicle seat used of the head of the more close seated person in support portion with respect to back of seat.
Background technology
Traditionally, exist a kind of have can make when vehicle rear-side collision takes place that headrest is instantaneous to move forward vehicle seat used with the mechanism of the head that supports seated person.For example, the teaching of TOHKEMY 2002-142910 communique the technology that moves forward from the headrest base portion of a kind of support portion that utilizes four node connecting rod mechanisms (four-joints link mechanism) to be used in to support the head of seated person.
In the disclosure content, four node connecting rod mechanisms are made of two parallel rods that are arranged between headrest base portion and the support portion.When the vehicle rear-side collision did not take place, two parallel rods were maintained at the posture state that the support portion is return towards the headrest base portion.When the vehicle rear-side collision takes place, remove this state.When this state of releasing, two parallel rods are rotated so that the support portion moves forward by bias force.
Summary of the invention
The problem that invention will solve
Yet, in conventional art, be used to a plurality of link components of mechanism's needs and transom that the support portion is moved forward by above-mentioned document teaching.This may cause the increase of number of components and the increase of weight.
Made the present invention in order to address the above problem.Thereby the objective of the invention is to simplify the headrest support portion that when the vehicle rear-side collision takes place, can be used in the head that supports seated person and move the head back bevelled mechanism that prevents seated person.
The scheme that is used to deal with problems
In order to address the above problem the following means of vehicle seat used use of the present invention.
At first, a first aspect of the present invention is a kind of vehicle seat used, this is vehicle seat used to have head rest moving mechanism, when detecting the vehicle rear-side collision, the support portion that this head rest moving mechanism can be used in the headrest of the head that supports seated person relatively moves with respect to back of seat, thus the head ground positioning supports portion of close seated person.This head rest moving mechanism comprises: link component, and it makes the support portion of headrest connected to each other with the headrest base portion that is supported on the back of seat; And path of navigation, it is formed in the headrest base portion.Path of navigation can be accommodated the support portion slidably, to determine the postural position of support portion, wherein, can change the posture of support portion with respect to the headrest base portion rotationally via link component.The shape of path of navigation is formed along with link component rotates and makes the initial position of support portion before taking place from the vehicle rear-side collision with respect to the headrest base portion forward and be moved upwards up to the collision ready position.
According to a first aspect of the invention, the support portion of headrest that is used to support the head of seated person engages path of navigation slidably, thereby the support portion is remained on the posture with respect to the initial position of headrest base portion usually.When detecting vehicle rear-side when collision, along with link component rotates, the support portion when path of navigation slides from initial position forward and be moved upwards up to the collision ready position.
Then, in quoting a second aspect of the present invention of a first aspect of the present invention, head rest moving mechanism comprises stop motion mechnism, make to arrive under the state that collision ready position and restriction set junction surface, support portion in path of navigation, moves that the load that is caused and be applied to the support portion by receding of the head of seated person can play the stressed effect that the junction surface that makes the support portion is moved further along working direction along working direction in the support portion.
According to a second aspect of the invention, when the support portion arrives the collision ready position, slide along working direction with respect to path of navigation in restriction set junction surface, support portion.Under this state, when applying to the support portion by the receding during the load that causes of the head of seated person, this load is further slided the junction surface along working direction in path of navigation.Therefore, even the support portion is subjected to can not pushing back the support portion from the load of the head of seated person, the support portion can remain on the head of seated person the collision ready position.
Then, quote of the present invention first or a third aspect of the present invention of second aspect in, the path of navigation that is formed in the headrest base portion forms the recessed concavity of Width that has along the headrest base portion.Set junction surface, support portion forms has the convex that can engage with the path of navigation of concavity.Recessed locking groove is formed on the junction surface is directed to the path of navigation of collision ready position from initial position.When in path of navigation when the back promotes the junction surface, locking groove can be accommodated the junction surface.Locking groove is formed in the process that moves along working direction at the junction surface, and when when pressing the junction surface from the load of the head of seated person, locking groove is accommodated the junction surface and prevented that the junction surface is pushed rearward back.
According to a third aspect of the invention we, when detecting the vehicle rear-side collision, if the support portion is in the load that is subjected in the state that moves of collision ready position along working direction from the head of seated person, then the junction surface acted on corresponding power and junction surface and be pushed back and enter locking groove.As a result, support zone is in limiting the position that the support portion further is pushed back.Therefore, the support portion can remain on the head of seated person this position.
In addition, in a fourth aspect of the present invention of the third aspect of quoting the invention described above, engage anti-locking mechanism and be set to the headrest base portion, when direction is return from colliding ready position when initial position moves in the edge, junction surface, engage anti-locking mechanism and can stop the junction surface to enter the locking groove that is formed in the path of navigation, thereby make the junction surface cross locking groove.When the junction surface when moving, engages anti-locking mechanism and allows the junction surface to enter locking groove in the mobile way of advancing to the collision ready position along working direction from initial position in path of navigation.
According to a forth aspect of the invention, if the support portion in the load that is subjected to when moving towards the collision ready position from the head of seated person, then the junction surface enters locking groove in the way of working direction.Yet, even be subjected to load from collision ready position support portion when initial position moves, also can stop the junction surface enter locking groove by engaging anti-locking mechanism from the head of seated person when the junction surface, make the junction surface can cross locking groove.
Then, in a fifth aspect of the present invention of the fourth aspect of quoting the invention described above, engage the spring member that anti-locking mechanism comprises the anti-stopping bar of arm shape and anti-stopping bar applied spring force.Anti-stopping bar is pivotally connected to the headrest base portion.Spring member will prevent that stopping bar remains on makes anti-stopping bar be exposed to the posture state of path of navigation.Anti-stopping bar has and is formed on its leading section and can keeps along the resettlement section of returning the junction surface that direction moves.Anti-stopping bar can rotate and guide the junction surface that is kept by the portion of receiving so that locking groove is crossed at the junction surface moves.When the junction surface when working direction moves, allow the junction surface to move under the state that anti-stopping bar is pushed open in the joint along working direction.When the junction surface was mobile near collision ready position ground, anti-stopping bar was removed with the junction surface and is engaged, prevented that stopping bar can keep the edge to return the posture state at the junction surface that direction moves so that prevent that stopping bar turns back to.
According to a fifth aspect of the invention, will prevent usually by spring member that stopping bar remains on makes anti-stopping bar be exposed to the posture state of path of navigation.When the support portion when working direction moves, anti-stopping bar allows the junction surface to enter locking groove under the state of being pushed open by the junction surface of sliding along working direction.Yet, when the support portion from the collision ready position along returning direction when moving, anti-stopping bar can remain on the junction surface of sliding in the resettlement section, moves thereby make the junction surface cross locking groove when rotating.
Then, quote the invention described above the 3rd to the 5th aspect in any a sixth aspect of the present invention, in path of navigation, form along a plurality of locking grooves of path of navigation location.
According to a sixth aspect of the invention, in path of navigation, form along a plurality of locking grooves of path of navigation location.Therefore, when the support portion was subjected to load from the head of seated person in support portion when working direction moves, the junction surface can enter in the hithermost locking groove.
Then, quote the invention described above first to the 5th aspect in any a seventh aspect of the present invention, path of navigation is with respect to the headrest base portion forward and extend upward.
According to a seventh aspect of the invention, path of navigation corresponding to the moving direction of support portion forward and extend upward.Therefore, the support portion can be moved under roughly keeping with respect to the state of inclination attitude of headrest base portion.
The effect of invention
Above-mentioned means can provide following effect.
According to a first aspect of the invention, because the support portion is linked to the headrest base portion and engages the simple structure of path of navigation slidably, the support portion can be moved from the sweptback collision ready position of initial position to the head that can prevent seated person under the state that keeps the support portion with respect to the inclination attitude of headrest base portion.
In addition, according to a second aspect of the invention, be subjected to also can preventing the stop motion mechnism that the support portion is pushed back even when the support portion arrives collision ready position support portion is set from the load of the head of seated person, this stop motion mechnism by support portion and headrest base portion each other slidably the connected structure of joint constitute.Therefore, the sweptback structure that can be used in the head that prevents seated person is simplified and is rationalized.
In addition, according to a third aspect of the invention we, form in path of navigation and can prevent the locking groove that the support portion is pushed back by the head of seated person, wherein, slide along this path of navigation in the support portion.Therefore, though when the support portion when working direction moves, can prevent that also the head back of seated person from tilting.As a result, can simplify this structure.
In addition, according to a forth aspect of the invention, be provided with and engage anti-locking mechanism.When the support portion when working direction moves, engage anti-locking mechanism and allow adapter shaft in the way of working direction, to engage locking groove.On the contrary, when the support portion from the collision ready position along returning direction when moving, engage anti-locking mechanism and can guide adapter shaft, make adapter shaft can cross locking groove.Therefore, the support portion can turn back to initial position reposefully.
In addition, according to a fifth aspect of the invention, engage anti-locking mechanism by the anti-stopping bar of arm shape with will prevent that the spring member that stopping bar remains on initial position constitutes.Therefore, engaging anti-locking mechanism can be by simple relatively component set-up.
In addition, according to a sixth aspect of the invention, in path of navigation, form along a plurality of locking grooves of path of navigation location.Therefore, when the support portion when working direction moves, can prevent that the support portion from being pushed back by the head of seated person in a plurality of positions in the mobile way of advancing.
In addition, according to a seventh aspect of the invention, path of navigation corresponding to the moving direction of support portion forward and extend upward.Therefore, the support portion can be moved under the state that roughly keeps its inclination attitude.As a result, can be kept for supporting the receiving position of support portion of the head of seated person.
Description of drawings
Fig. 1 is the vehicle seat used block diagram according to embodiment 1, and it has schematically shown vehicle seat used structure.
Fig. 2 is a constructional drawing, and it shows by operating the upwards structure of push rod of cable (cable).
Fig. 3 is an amplification stereogram, and its pillar and operation cable that shows headrest is inserted into insert structure in the tubular strut member.
Fig. 4 is the amplification stereogram that can detect the detecting device of vehicle rear-side collision.
Fig. 5 is a lateral plan, and its support portion that shows headrest is maintained at the state of initial position.
Fig. 6 is the scheme drawing of the inner structure of head rest moving mechanism, and it is with corresponding along the cutaway view of the line VI-VI of Figure 11 intercepting.
Fig. 7 is a lateral plan, the state that move towards the head of seated person its support portion that shows headrest.
Fig. 8 is a lateral plan, and its support portion that shows headrest arrives the state of collision ready position.
Fig. 9 is a lateral plan, the state that move towards initial position from the collision ready position its support portion that shows headrest.
Figure 10 is a lateral plan, the state that move towards initial position under the state that is directed its support portion that shows headrest.
Figure 11 is the constructional drawing along the head rest moving mechanism of the line XI observation of Fig. 8.
Figure 12 is a block diagram, and it shows the state of pillar before being inserted in the tubular strut member.
Figure 13 is a block diagram, and it shows pillar and is inserted into state in the tubular strut member.
Figure 14 is the cutaway view along the line XI V-XI V intercepting of Figure 13.
Figure 15 is the scheme drawing of the variations of head rest moving mechanism.
Figure 16 is the scheme drawing of another variations of head rest moving mechanism.
Description of reference numerals
1 is vehicle seat used
2 back of seats
The 2F back frame
The Fu upper frame
The Fs body side frame
The 2S strut member
The Sb button
The St engaging claw
The Sd insertion groove
3 seat cushions
4 headrests
The 4A support portion
The 4B pillar
The Bk engaging groove
The Bd accepting groove
The 4C base portion of resting the head on
10 head rest moving mechanism
11B back side portion
The 11D bottom surface sections
The 11S side surface part
The 11U top part
The 11R rib
11H slotted hole (path of navigation)
The H0 bottom
H1 first locking groove (locking groove)
H2 second locking groove (locking groove)
The H3 upper end
12 link components
The 12A adapter shaft
The 12B adapter shaft
13 load-carrying elements
13A adapter shaft (junction surface)
14 hooks
The 14A adapter shaft
14B maxilla portion
14C lower jaw portion
The 14D engaging groove
The 14S torque spring
15 joint-releasing engagement members
15A operates arm
The 15B adapter shaft
The 15C engagement arm portion
The 15S torque spring
16 extension springs
17 anti-stopping bars
The 17A adapter shaft
The 17B resettlement section
17S torque spring (spring member)
20 pressure receiving members
The 20S torque spring
21 pressure acceptance divisions
30 dampers
31 turning cylinders
The 31A connecting arm
32 housings
The 32A motion arm
40 operation cables
41 INT COMP
The 41P copulational protuberance
42 external members
The 42S slotted hole
The 42H head
The 42D bellying
50 push rods
60 mounting brackets
61 outer installation portions
62 retainers
The specific embodiment
Below, be used to implement optimal mode of the present invention with reference to description of drawings.
Embodiment 1
At first, referring to figs. 1 through the vehicle seat used structure of Figure 14 explanation according to embodiment 1.
Fig. 1 is vehicle seat used 1 block diagram, and it has schematically shown vehicle seat used 1 structure.Vehicle seat used 1 by as the back of seat 2 of the back support of seated person, constitute as the seat cushion 3 of the portion of taking one's seat with as the headrest 4 of the head support of seated person.In accompanying drawing,, omitted their covered structure in order to illustrate the inner structure of back of seat 2, headrest 4 and other parts as Fig. 1 etc.
Can work as the action that when the vehicle rear-side collision takes place support portion 4A is moved forward by the head rest moving mechanism 10 that is included in the headrest 4.As shown in Figure 5, collide under the nonevent common state in vehicle rear-side, head rest moving mechanism 10 remains on support portion 4A the posture of initial position when support portion 4A is remained on the restriction state that travels forward.In addition, by be positioned in support portion 4A and and the headrest base portion 4C of pillar 4B and 4B one between 16 couples of support portion 4A of extension spring apply usually along move forward direction, promptly the edge is towards the bias force of the direction of the head of seated person.Therefore, collide under the nonevent common state in vehicle rear-side, support portion 4A resists the bias force of extension spring 16 and is maintained at initial position.
When the vehicle rear-side collision took place and removes the limit movement state of support portion 4A, head rest moving mechanism 10 can make support portion 4A move forward by the bias force of extension spring 16.At this moment, head rest moving mechanism 10 can make support portion 4A along the shape of slotted hole 11H and 11H forward and move up, and this slotted hole 11H and 11H are formed among the headrest base portion 4C of explanation after a while.As a result, as shown in Figure 8, make support portion 4A move to the position (collision ready position) in dead aft of the head of seated person.Head rest moving mechanism 10 is formed under the state that makes support portion 4A move to the collision ready position, even be subjected to the load that recedes and cause by the head of seated person as vehicle rear-side when generation collision support portion 4A, also can not push back support portion 4A.As a result, can by support portion 4A with the head steady of seated person remain on the collision ready position.
In addition, slotted hole 11H and 11H are corresponding with path of navigation among the present invention.
Referring again to Fig. 1, can carry out the operation of above-mentioned releasing support portion 4A by the press-out of push rod 50 at the limit movement state of initial position.Push rod 50 is inserted among the right side tubular piliar 4B as shown in the figure of headrest 4.
As shown in Figure 2, the upper end of push rod 50 is connected to as head rest moving mechanism 10 and joint-releasing the engagement member 15 of the control member that is provided with.In addition, the bottom of push rod 50 is connected to the upper end of the in-to-in operation cable 40 that is arranged in back of seat 2.
As shown in Figure 4, the bottom of operation cable 40 is connected to the pressure receiving member 20 that is arranged in the back of seat 2, makes can pull down operation cable 40 when the vehicle rear-side collision takes place.Pressure receiving member 20 can play the function of the detecting device of vehicle rear-side collision.In addition, as shown in Figure 2, when operation cable 40 was configured to bottom when pulling process cable 40, cooresponding operating effort was delivered to the upper end of operating cable 40 with being reversed, thus push rod 50 upwards.
In addition, when upwards pushing away push rod 50, push away joint-releasing engagement member 15 and joint-releasing engagement member 15 is rotated counterclockwise as shown in the figure, the feasible limit movement state that can remove support portion 4A.
Below, the above-mentioned detection device of vehicle rear-side collision is described, promptly when vehicle rear-side collision generation, is used for the upwards structure of the detecting device of push rod 50.
As shown in Figure 4, Wan Qu bar-shaped pressure receiving member 20 is disposed in the pars intermedia in the back of seat 2.Pressure receiving member 20 is oriented to broad ways and extends.The right part as seen in Fig. of pressure receiving member 20 is supported on the right side frame Fs of back of seat 2 rotationally.In addition, the left part as seen in Fig. of pressure receiving member 20 is supported on the left side frame Fs rotationally via rotation damper 30.
Pars intermedia at the Width of pressure receiving member 20 forms the pressure acceptance division 21 that can receive the back of seat load that is applied by seated person.Thereby by the right part as seen in Fig. that is bent downwardly pressure receiving member 20 center of turn of pressure acceptance division 21 and pressure receiving member 20 is staggered and form pressure acceptance division 21.Thereby,, pressure receiving member 20 is rotated around two end when the back of seat load that applies by seated person backward during pressure pressure acceptance division 21.
In addition, torque spring 20S is disposed between the right part and right side frame Fs of pressure receiving member 20.Under the state that twists torque spring 20S in advance, arrange torque spring 20S, thereby along the direction of thrust pressure acceptance division 21 forward bias pressure receiving member 20 rotationally.As a result, pressure receiving member 20 is maintained at the posture state that pressure acceptance division 21 presses the cushion rubber (not shown) of the seat back surface of being installed to back of seat 2 usually.
In addition, use known rotation damper as the damper 30 that is connected to the left part of pressure receiving member 20.That is to say that in damper 30, turning cylinder 31 is inserted in the tubular shell 32.Turning cylinder 31 and housing 32 are assembled into relative to each other rotatable.
Turning cylinder 31 has the connecting arm 31A of the right part as seen in Fig. of being installed to turning cylinder 31.Connecting arm 31A is integrally connected to the left part of pressure receiving member 20.In addition, support the left part as seen in Fig. of turning cylinder 31 rotationally by left side frame Fs.Thereby,, make housing 32 to rotate with respect to body side frame F s by turning cylinder 31 support housings 32.In addition, housing 32 has the motion arm 32A of being installed to its outer peripheral face.Motion arm 32A is connected to the bottom of the INT COMP 41 of the operation cable 40 of explanation after a while.Housing 32 is configured to when motion arm 32A contacts the retainer 62 of the mounting bracket 60 of being installed to left side frame Fs, can limit the moving along the direction that contacts retainer 62 of housing 32.
With filling and hermetic seal above-mentioned housing 32 as viscous fluids such as silicone oil.As a result, when turning cylinder 31 being applied when making its power of rotating with respect to housing 32, depend on the velocity of rotation of turning cylinder 31 and between turning cylinder 31 and housing 32, produce viscous resistance.This viscous resistance of effect between turning cylinder 31 and housing 32.Viscous resistance increases along with the increase of the velocity of rotation of turning cylinder 31.On the contrary, viscous resistance reduces along with the reduction of the velocity of rotation of turning cylinder 31.When the viscous resistance of effect when big, can be easily the turning effort of turning cylinder 31 be passed to housing 32.On the contrary, when the viscous resistance hour of effect, can not be easily the turning effort of turning cylinder 31 be passed to housing 32.
When seated person leaned on back of seat 2, so the pressure receiving member 20 and the damper 30 of structure can followingly be operated.
At first, collide under the nonevent common state in vehicle rear-side, when seated person leaned on back of seat 2, pressure receiving member 20 was pushed and rotates backward with slow speed corresponding to the movement of seated person.Therefore, in this case, turning cylinder 31 can rotate with respect to housing 32 with slow speed, makes that the viscous resistance of effect is little.As a result, turning cylinder 31 dallies in housing 32, makes the turning effort of turning cylinder 31 not to be passed to housing 32.
Yet when the vehicle rear-side collision took place, seated person pressed back of seat 2 tempestuously owing to collision impact.At this moment, pressure receiving member 20 is pushed and rotates backward with higher speed corresponding to the ballistic motion of seated person.Therefore, in this case, turning cylinder 31 can rotate with respect to housing 32 with higher speed, makes that the viscous resistance of effect is big.As a result, the turning effort of turning cylinder 31 can be passed to housing 32, make housing 32 to rotate integratedly with turning cylinder 31.Because the bottom of the INT COMP 41 of operation cable 40 is connected to motion arm 32A, therefore, housing 32 can pull down the bottom of INT COMP 41.
In addition, when the bottom of the INT COMP 41 of pulling process cable 40, as shown in Figure 2, cooresponding operating effort is passed to the upper end of INT COMP 41, makes upwards to promote push rod 50 in strut member 2S.
Then, the transmission mechanism that operating effort is passed to push rod 50 from operation cable 40 is described.
As shown in Figures 2 and 3, when the upper end of operation cable 40 was inserted into the strut member 2S from the below, operation cable 40 can be assembled into strut member 2S to promote to be arranged in the push rod 50 among the tubular pillar 4B, and this tubular pillar 4B is inserted among the tubular strut member 2S.
Especially, as shown in Figure 3, operation cable 40 is constructed such that the T shape copulational protuberance 41P of the upper end that is formed on INT COMP 41 and 41P are radially outward outstanding from slotted hole 42S and 42S that perforation forms the perisporium of the upper end of member 42 externally.
As a result, INT COMP 41 can move axially with respect to external member 42 in the cooresponding scope of scope that can move in slotted hole 42S and 42S with T shape copulational protuberance 41P and 41P.Copulational protuberance 41P and 41P and slotted hole 42S and 42S are formed on two circumferential positions of INT COMP 41 and external member 42 axisymmetrically.Head 42H is formed on the upper end of external member 42, thus the tubulated ends of the outer barrel member 42 of sealing.
As shown in figure 12, when the upper end of the operation cable 40 of structure like this is inserted into the tubular strut member 2S from the below, be suspended on the temporary transient operation cable 40 that keeps under the state on the strut member 2S in the upper end of operation cable 40.Under this suspension status, as shown in figure 13, when pillar 4B was inserted into the tubular strut member 2S from the top, operation cable 40 can be suspended in state on the pillar 4B to operation cable 40 from the state exchange that operation cable 40 is suspended on the strut member 2S.
In addition, when operation cable 40 when being in the state that is suspended on the pillar 4B, operation cable 40 is in operation cable 40 can oppositely be passed to the operating effort that is produced by the lower end of being drawn the in-to-in push rod 50 that the is positioned in pillar 4B state as the promotion operating effort.
Describe above-mentioned structure in detail with reference to Fig. 3.At first, in the perisporium of strut member 2S, form axial upwardly extending seam shape insertion groove Sd and Sd from the bottom of strut member 2S.Insertion groove Sd and Sd are positioned at two circumferential positions of strut member 2S each other axisymmetrically.The shape of insertion groove Sd and Sd forms the copulational protuberance 41P that makes in the INT COMP 41 be formed on operation cable 40 and 41P respectively and can be housed among insertion groove Sd and the Sd and can be inserted into vertically among insertion groove Sd and the Sd.
The shape of insertion groove Sd and Sd form respectively make with the cooresponding terminal part of the upper end side of accommodating copulational protuberance 41P and 41P respectively as shown in the figure left and along the circumferential direction crooked to the right.Especially, be positioned in the nearside of Fig. 3 and form by the shape of the insertion groove Sd shown in the solid line and to make its terminal part slight curvature left as shown in the figure.On the contrary, the shape that is positioned in the distally of Fig. 3 and insertion groove Sd shown by dashed lines forms and makes its terminal part crooked as shown in the figure to the right.That is to say that the shape of insertion groove Sd that is positioned in the distally of Fig. 3 forms and be positioned in the insertion groove Sd rotational symmetry of the nearside of Fig. 3.
The shape of each crooked terminal part along the circumferential direction of insertion groove Sd and Sd all forms and is positioned at horizontal below.The result, when copulational protuberance 41P and 41P (operation cable 40) are inserted among insertion groove Sd and the Sd when copulational protuberance 41P and 41P arrive the terminal location of insertion groove Sd and Sd, under copulational protuberance 41P and 41P are suspended in state on the strut member 2S, stably keep copulational protuberance 41P and 41P, thereby prevent that copulational protuberance 41P and 41P are owing to deadweight falls.
After the copulational protuberance 41P of the upper end that will be set at INT COMP 41 and 41P are inserted into insertion groove Sd and Sd, can be simply insert operation cable 40 and will operate cable 40 and be inserted among the tubular strut member 2S by upwards (vertically).In addition, when copulational protuberance 41P and 41P arrive the axial terminal position of insertion groove Sd and Sd, operation cable 40 is along the circumferential direction rotated along the terminal part of bending.Thereby as shown in figure 12, copulational protuberance 41P and 41P arrive the along the circumferential direction crooked terminal location of insertion groove Sd and Sd, make to keep operation cable 40 under operation cable 40 is suspended in state on the strut member 2S.
Referring again to Fig. 3, the upper end of external member 42 is integrally formed by synthetic resin, thereby has the bellying 42D that radially outward partly bloats.Bellying 42D is positioned in the axial middle part of the upper end that is inserted into the external member 42 among the tubular strut member 2S.Bellying 42D is formed on the whole circumference of external member 42 and has zigzag fashion.Bellying 42D forms the internal diameter external diameter about equally that has with tubular strut member 2S.Because bellying 42D can gently be assembled among the tubular strut member 2S when the upper end of operation cable 40 is inserted among the tubular strut member 2S, therefore, operation cable 40 can be inserted among the tubular strut member 2S under the situation of not waving reposefully.
In addition, as shown in figure 12, seam shape accepting groove Bd and Bd are formed on from the top and are inserted in the perisporium of the pillar 4B the tubular strut member 2S.Accepting groove Bd and Bd form from the bottom of pillar 4B and axially extend upward.Accepting groove Bd and Bd are positioned at two circumferential positions of pillar 4B each other axisymmetrically.When pillar 4B is inserted into the tubular strut member 2S from the top, accepting groove Bd and Bd can accommodate operation cable 40 INT COMP 41 be suspended on copulational protuberance 41P and 41P among the tubular strut member 2S.In addition, when after being housed among accepting groove Bd and the Bd, further being inserted into pillar 4B among the strut member 2S, along accepting groove Bd and Bd upwards (axially) guide engagement projection 41P and 41P at copulational protuberance 41P and 41P.
The shape of accommodating the accepting groove Bd of copulational protuberance 41P and 41P and Bd form respectively make with the cooresponding terminal part of its upper end side along and be formed on the insertion groove Sd direction in a circumferential direction bending opposite among the above-mentioned strut member 2S with Sd.The shape of each curved extremities portion of accepting groove Bd and Bd all forms from axially gently crooked to horizontal direction.The result, when pillar 4B is inserted among the tubular strut member 2S, the copulational protuberance 41P and the 41P that can will be positioned among the tubular strut member 2S by the push operation power that is applied to pillar 4B vertically are housed among accepting groove Bd and the Bd reposefully, arrive the terminal location that the level of accepting groove Bd and Bd is pointed to up to copulational protuberance 41P and 41P.
Therefore, as shown in figure 13, when pillar 4B was inserted into the tubular strut member 2S from the top, copulational protuberance 41P and 41P along the circumferential direction rotated under the state of the curve guiding of accepting groove Bd that is formed on pillar 4B and Bd.As a result, the state that is maintained at the terminal location of insertion groove Sd and Sd from copulational protuberance 41P and 41P pushes back copulational protuberance 41P and 41P, and copulational protuberance 41P and 41P are moved along the direction that discharges from this state.When copulational protuberance 41P and 41P when the curve of accepting groove Bd and Bd moves and arrives the terminal location of accepting groove Bd and Bd, copulational protuberance 41P and 41P forced back towards the portion that extends axially of insertion groove Sd and Sd.
Thereby, be suspended in state on the pillar 4B to copulational protuberance 41P and 41P thereby copulational protuberance 41P and 41P are suspended in axially movable state-transition that strut member 2S goes up restriction copulational protuberance 41P and 41P from copulational protuberance 41P and 41P.As a result, copulational protuberance 41P and 41P are placed in restriction copulational protuberance 41P and 41P with respect to the axially movable state of pillar 4B.That is to say, discharge copulational protuberance 41P and 41P from restriction copulational protuberance 41P and 41P with respect to the axially movable axial motion restriction state of strut member 2S, thereby place restriction copulational protuberance 41P and 41P with respect to the axially movable state of pillar 4B copulational protuberance 41P and 41P.
At this moment, because copulational protuberance 41P and 41P are positioned in extending axially in the portion of insertion groove Sd and Sd, therefore, copulational protuberance 41P and 41P are placed in restriction copulational protuberance 41P and the 41P state along the circumferential direction mobile with respect to strut member 2S.As a result, copulational protuberance 41P and 41P are being extended axially the terminal location that is maintained at accepting groove Bd and Bd under the state of insertion groove Sd and Sd guiding.Thereby the INT COMP 41 of pillar 4B and operation cable 40 is connected to each other vertically and is integral, can be with respect to the axially movable together each other state of strut member 2S thereby pillar 4B is placed with the INT COMP 41 of operating cable 40.
As shown in figure 14, in tubular strut member 2S, arrange the tabular engaging claw St that can engage with the concavity engaging groove Bk in the periphery wall that is formed on pillar 4B.Usually apply bias force and engaging claw St remained on engaging claw St to engaging claw St and be projected into posture state among the tubular strut member 2S.Can engaging claw St be return from tubular strut member 2S by promoting button Sb from the side.
Thereby, when pillar 4B is inserted among the tubular strut member 2S, when the insertion position of one of them engaging groove Bk and engaging claw St on time, engaging claw St enters corresponding engagement groove Bk by bias force and engages with this corresponding engagement groove Bk.As a result, pillar 4B is placed in the state that restriction pillar 4B moves along direction of insertion, thus locking pillar 4B.Can make engaging claw St remove the state that the pillar 4B that lifts restrictions moves along direction of insertion that engages by promoting button Sb with engaging groove Bk.Engaging groove Bk axially is formed on a plurality of positions along pillar 4B's.Therefore, can freely adjust the height of headrest 4 by the promotion operation of suitably carrying out button Sb.
As mentioned above, when inserting pillar 4B, the upper end of the bottom of pillar 4B and INT COMP 41 is connected to each other vertically, thereby provides the head 42H of the external member 42 of operation cable 40 to be inserted into state the tubular pillar 4B from the below.As a result, the head 42H of external member 42 is oriented to vertically near the bottom that is inserted into the push rod 50 among the tubular pillar 4B.
Strictly speaking, between the bottom of push rod 50 and head 42H, form little gap, make when insertion pillar 4B, can not promote push rod 50 mistakenly by the head 42H of external member 42.
In addition, externally the bottom of the head 42H of member 42 and push rod 50 is oriented under the approximating state vertically, and the operating effort that head 42H and push rod 50 are in the lower end generation that can make the operation cable 40 that is drawn by quilt by the head 42H of external member 42 oppositely and with it is passed to the axial coupled condition of push rod 50 as the promotion operating effort.
In addition, can be by above-mentioned headrest 4 be separated with back of seat 2 from tubular strut member 2S and 2S sustentacula 4B and 4B.At this moment, along with pillar 4B and 4B are drawn out, can remove the axial coupled condition of the bottom of aforesaid INT COMP 41 and pillar 4B.
Especially, as understanding from Figure 13 like that, along with the sustentacula 4B that makes progress from strut member 2S, copulational protuberance 41P and 41P rotation along the circumferential direction under the state of the curve guiding of the insertion groove Sd of supported 2S and Sd.As a result, copulational protuberance 41P and 41P are pushed back from the state that copulational protuberance 41P and 41P are maintained at the terminal location of accepting groove Bd and Bd, and copulational protuberance 41P and 41P are moved along the direction of leaving this state.When copulational protuberance 41P and 41P when the curve of insertion groove Sd and Sd moves and arrives the terminal location of insertion groove Sd and Sd, copulational protuberance 41P and 41P forced back towards the portion that extends axially of accepting groove Bd and Bd.As a result, as shown in figure 12, copulational protuberance 41P and 41P are suspended in state on the strut member 2S from the state-transition that copulational protuberance 41P and 41P are suspended on the pillar 4B to copulational protuberance 41P and 41P once more.Thereby, can remove the axial coupled condition that is oriented to the approximating push rod 50 and the head 42H of the external member 42 of operation cable 40.
Then, head rest moving mechanism 10 is described.Though the structure of head rest moving mechanism 10 has been shown in Fig. 5 to Figure 11,, in Fig. 8, show this structure best.Therefore, with reference to this figure this structure is described.
Head rest moving mechanism 10 is configured to make support portion 4A to be connected to headrest base portion 4C.Head rest moving mechanism comprises pair of links member 12 and 12, load-carrying element 13 and 13, hook 14 and 14, joint-releasing engagement member 15, extension spring 16 and anti-stopping bar 17 and 17 along located lateral.
Figure 11 is the view of observing along the line XI of Fig. 8, promptly from the front view of the headrest 4 of oblique beneath.As shown in the figure, upright establishing forms a plurality of plate rib 11R-(symbol "-" expression is a plurality of) between the side surface part 11S of headrest base portion 4C and 11S, thereby strengthens headrest base portion 4C.Rib 11R-is upright abreast to be established.
The upper end of pillar 4B and 4B is inserted into respectively among the bottom surface sections 11D of headrest base portion 4C, and is fixed to bottom surface sections 11D integratedly.In addition, pillar 4B and 4B have tubular form, and are fixed to bottom surface sections 11D, make the upper end of band opening of pillar 4B and 4B expose to the upper surface side of bottom surface sections 11D.
In addition, in the side surface part 11S of headrest base portion 4C and 11S, form wavy slotted hole 11H.Form slotted hole 11H and 11H by cut away side surface part 11S and 11S along thickness direction.Slotted hole 11H and 11H have the first locking groove H1 and the second locking groove H2 that is formed between bottom H0 and H0 and upper end H3 and the H3.The first locking groove H1 and the second locking groove H2 with wavy and step-like mode backward (among the figure to the right) recessed.In addition, each among the first locking groove H1 and the second locking groove H2 is corresponding with locking groove of the present invention.
Then, referring again to Fig. 8, pair of links member 12 and 12 is made by synthetic resin.Link component 12 and 12 can play the function that makes headrest base portion 4C and support portion 4A transom connected to each other.Link component 12 and 12 modes that laterally are spaced apart from each other with the edge are positioned on the 4A of support portion, and the end of link component 12 and 12 is connected to the upper end of headrest base portion 4C and the back side of support portion 4A respectively.
Especially, by the adapter shaft 12A of side surface part 11S that connects headrest base portion 4C and 11S support link member 12 and 12 rearward end rotationally.In addition, as shown in figure 11, link component 12 and 12 rearward end are positioned between side surface part 11S and 11S and rib 11R and the 11R, and this rib 11R and 11R are positioned in the inboard of side surface part 11S and 11S.Thereby, by the adapter shaft 12A that between side surface part 11S and 11S, extends support link member 12 and 12 rotationally.
Referring again to Fig. 8, by along the adapter shaft 12B on the back side that laterally is positioned in support portion 4A support link member 12 and 12 leading section rotationally.Adapter shaft 12A and 12B are oriented to parallel to each other.
Above-mentioned link component 12 and 12 is configured to when making link component 12 and 12 when supporting rotationally that the adapter shaft 12A of end clockwise rotates thereafter, link component 12 contacts the top part 11U of headrest base portion 4C with 12, making can limiting rod member 12 and 12 clockwise rotate.
Then, pair of supporting members 13 and 13 is integrally connected to support portion 4A, so that load-carrying element 13 and 13 extends back with the back side of arm shape form from support portion 4A.Load-carrying element 13 and 13 is to be positioned on the 4A of support portion along the mode that laterally is spaced apart from each other.Support portion 4A is made by synthetic resin.In addition, form support portion 4A, make the front surface of support portion 4A have the tabular of bending.In addition, the back side of support portion 4A be used for rotationally that the support portion of support and connection axle 12B forms as one.In addition, the back side of support portion 4A and load-carrying element 13 and 13 form as one.
The adapter shaft 13A that is extended by broad ways is connected to each other the rearward end of load-carrying element 13 and 13.Especially, as shown in figure 11, load-carrying element 13 and 13 rearward end are positioned between the rib 11R in the outside of load-carrying element 13 and 13 and 11R and rib 11R and 11R in the inboard of load-carrying element 13 and 13.In addition, the adapter shaft 13A that connects load-carrying element 13 and 13 rearward end is oriented to parallel with adapter shaft 12B with above-mentioned adapter shaft 12A.In addition, adapter shaft 13A is corresponding with junction surface of the present invention.
Make the end perforation of adapter shaft 13A be formed on the side surface part 11S of the 4C of headrest portion and slotted hole 11H and 11H among the 11S.Therefore, adapter shaft 13A can move forward and backward and move up and down in the shape restricted portion by slotted hole 11H and 11H.In addition, the shape that is formed on the rib 11R-(Figure 11) between side surface part 11S and the 11S does not form and interferes with the adapter shaft 13A that moves in slotted hole 11H and 11H.
Then, as shown in Figure 6, a pair of hook 14 and 14 forms integral body and is cam face and is disposed among the headrest base portion 4C.Hook 14 and 14 is with the horizontal bottom that is positioned at headrest base portion 4C apart from one another by the mode of opening, edge.Hook 14 and 14 is set remains on the retaining member of bottom H0 and H0, the initial position of this bottom H0 and H0 qualification adapter shaft 13A as the adapter shaft 13A that is used in slotted hole 11H and 11H, to move.
Especially, as shown in figure 11, hook 14 and 14 is positioned between side surface part 11S and 11S and rib 11R and the 11R and respectively and is supported rotationally by the adapter shaft 14A and the 14A that extend between side surface part 11S and 11S and rib 11R and 11R, and this rib 11R and 11R are positioned in the inboard of side surface part 11S and 11S.
Referring again to Fig. 6, form the 14B of maxilla portion of the claw-like that extends radially outwardly and the 14C of lower jaw portion of claw-like in each in hook 14A and 14A.Among 14B of maxilla portion and the 14C of lower jaw portion each is positioned in two positions on the peripheral part of hook 14.Form recess between 14B of maxilla portion and the 14C of lower jaw portion, the shape of this recess forms can accommodate above-mentioned adapter shaft 13A therein.Adapter shaft 14A is oriented to parallel with 12B and adapter shaft 13A with adapter shaft 12A with 14A.
In addition, above-mentioned hook 14 and 14 and headrest base portion 4C between arrange torque spring 14S and 14S.Under the state that twists torque spring 14S and 14S in advance, arrange torque spring 14S and 14S.Hook 14 and 14 is applied the bias force that rotates counterclockwise from position as shown in Figure 6 by torque spring 14S and 14S.
In addition, in the peripheral part of hook 14 and 14, form step-like engaging groove 14D. Engaging groove 14D and 14D engage with the pair of engaging arm 15C and the 15C that engage-remove in the engagement member 15 that are formed on explanation after a while.Thereby, hook 14 and 14 can be remained on the state that restriction hook 14 and 14 rotates counterclockwise owing to bias force.
Therefore, under the state that restriction hook 14 and 14 rotates counterclockwise, hook 14 and 14 can remain on adapter shaft 13A adapter shaft 13A and be maintained at the bottom H0 of slotted hole 11H and 11H and the state among the H0, this bottom H0 and H0 limit the initial position of adapter shaft 13A, and adapter shaft 13A is housed in the recess that is formed between the 14B of maxilla portion and 14B and 14C of lower jaw portion and the 14C.
As shown in Figure 5, apply power usually, thereby adapter shaft 13A is applied power towards upper end H3 and H3 along the shape of slotted hole 11H and 11H towards adapter shaft 12A by being arranged in 16 couples of adapter shaft 13A of extension spring between adapter shaft 13A and the adapter shaft 12A.Thereby the bias force that usually adapter shaft 13A is remained on opposing extension spring 16 remains on the bottom H0 of slotted hole 11H and 11H and the initial condition among the H0 by hook 14 and 14 with adapter shaft 13A.
In addition, referring again to Fig. 6,, hook 14 and 14 is rotated counterclockwise when engagement arm portion 15C and 15C remove when engaging with hook 14 and 14 when rotating counterclockwise.As a result, shown in the dotted line among Fig. 6, hook 14 and 14 the 14B of maxilla portion and 14B outwards move from slotted hole 11H and 11H, and upwards promote 14C of lower jaw portion and 14C from the below, so that 14C of lower jaw portion and 14C are exposed to slotted hole 11H and 11H.Thereby, removed the state that keeps adapter shaft 13A by hook 14 and 14.As a result, as shown in Figure 7 and Figure 8, adapter shaft 13A by the bias force of extension spring 16 along the shape of slotted hole 11H and 11H forward and move up.As a result, when link component 12 and 12 was rotated, support portion 4A relatively moved forward and upwards with respect to headrest base portion 4C.
Referring again to Fig. 6, can limit the engagement arm portion 15C that rotates counterclockwise of hook 14 and 14 and 15C and be oriented to along laterally apart from one another by opening, and be oriented to can engage hook 14 and 14.Especially, similar with hook 14 and 14 as shown in figure 11, engagement arm portion 15C and 15C are positioned between side surface part 11S and 11S and rib 11R and the 11R, and this rib 11R and 11R are positioned in the inboard of side surface part 11S and 11S.In addition, by the adapter shaft 15B that between side surface part 11S and 11S, extends support engages arm 15C and 15C rotationally.Adapter shaft 15B is integrally connected to engagement arm portion 15C and 15C and is supported rotationally by side surface part 11S and 11S.Adapter shaft 15B is oriented to parallel with 12B and adapter shaft 13A with adapter shaft 12A.
In addition, torque spring 15S is disposed between an engagement arm portion 15C and the headrest base portion 4C.Under the state that twists torque spring 15S in advance, arrange torque spring 15S.As shown in Figure 6, torque spring 15S applies clockwise power to engagement arm portion 15C and 15C.Thereby usually engagement arm portion 15C and 15C are remained on following state: the far-end at engagement arm portion 15C and 15C is distinguished under the state of bond pad scalariform engaging groove 14D and 14D, and engagement arm portion 15C and 15C are pressed towards the peripheral part of hook 14 and 14.When engagement arm portion 15C and 15C engage with engaging groove 14D and 14D, engagement arm portion 15C and 15C are docked each other with engaging groove 14D and 14D, make that the biasing of restriction engagement arm portion 15C and 15C is rotated mutually.
In addition, referring again to Fig. 5, operation arm 15A is integrally connected to the end of adapter shaft 15B, and this adapter shaft 15B is connected to above-mentioned engagement arm portion 15C and 15C.Operation arm 15A is configured to rotate by above-mentioned push rod 50.When the vehicle rear-side collision takes place and upwards promotes push rod 50, operation arm 15A is rotated counterclockwise.As a result, as shown in Figure 6, operation arm 15A makes engagement arm portion 15C rotate along identical direction with 15C, thereby removes engaging of engagement arm portion 15C and 15C and hook 14 and 14.Thereby, can remove the state that support portion 4A is maintained at initial position, make and transfer support portion 4A forward and upwards by the bias force of extension spring 16.
As shown in Figure 8, when adapter shaft 13A arrives the upper end H3 of slotted hole 11H and 11H and H3, limit and stop support portion 4A forward and move up.In addition, stopping under the mobile state of advancing of support portion 4A,, can not push back support portion 4A backward even support portion 4A is subjected to the load from the head of seated person.
That is to say that when adapter shaft 13A arrived the upper end H3 of slotted hole 11H and 11H and H3, the link component 12 that is connected to support portion 4A contact the top part 11U of base portion 4C that rests the head on 12, thereby becomes the state that clockwise rotates of limiting rod member 12 and 12.Under the state that clockwise rotates of limiting rod member 12 and 12, when support portion 4A be subjected to by receding of the head of seated person cause make the power that support portion 4A moves backward the time, link component 12 and 12 is subjected to making link component 12 and 12 to press the power of the top part 11U of headrest base portion 4C.So the power that produces can play the function of further pressing the power of adapter shaft 13A along working direction (making progress) from upper end H3 and the H3 of slotted hole 11H and 11H.Therefore, even support portion 4A is subjected to aforesaid stress, can prevent that also support portion 4A from rotating counterclockwise.As a result, support portion 4A can remain on the head of seated person the collision ready position.
In addition, as shown in Figure 7, in the process that support portion 4A moves forward,, can prevent that also support portion 4A is pushed rearward back if the head of seated person is pushed support portion 4A.That is to say, in the process that support portion 4A moves forward, when adapter shaft 13A is subjected to making the power that adapter shaft 13A moves backward, adapter shaft 13A can enter with step-like form backward (among the figure to the right) be formed on the first locking groove H1 and the H1 or second locking groove H2 and the H2 among slotted hole 11A and the 11A recessedly.As a result, limited moving backward of adapter shaft 13A, made support portion 4A to be remained on position in the way that moves forward.Therefore, even when support portion 4A no show still collision ready position, also can keep the head of seated person by support portion 4A.In addition, Fig. 7 shows adapter shaft 13A and is placed in state among the second locking groove H2 and the H2.
Referring again to Fig. 5, a pair of anti-stopping bar 17 and 17 is installed to headrest base portion 4C.Anti-stopping bar 17 and 17 is oriented to along laterally apart from one another by opening, and their rearward end is pivotally connected to headrest base portion 4C respectively.
Especially, as shown in figure 11, anti-stopping bar 17 and 17 rearward end are positioned between the rib 11R of inboard of the rib 11R in the outside of anti-stopping bar 17 and 17 and 11R and anti-stopping bar 17 and 17 and the 11R and are supported rotationally by the adapter shaft 17A and the 17A that extend between the rib 11R of the inboard of the rib 11R in the outside of preventing stopping bar 17 and 17 and 11R and anti-stopping bar 17 and 17 and 11R respectively.
In addition, torque spring 17S and 17S be disposed in anti-stopping bar 17 and 17 with rest the head between the base portion 4C.In addition, torque spring 17S and 17S are corresponding with spring member of the present invention.As shown in Figure 5, twine torque spring 17S and 17S around adapter shaft 17A and 17A.One end of each among torque spring 17S and the 17S is connected in the anti-stopping bar 17 and 17.The other end of each among torque spring 17S and the 17S is connected to headrest base portion 4C.Thereby under their free state, the spring force that anti-stopping bar 17 and 17 is maintained at by torque spring 17S and 17S makes anti-stopping bar 17 and 17 be exposed to the posture state of slotted hole 11H and 11H.
Spoon shape resettlement section 17B is respectively formed in the left side leading section of the anti-stopping bar 17 that is exposed to slotted hole 11H and 11H and 17.As shown in Figure 7, when adapter shaft 13A in slotted hole 11H and 11H from bottom H0 and H0 when working direction moves up, push resettlement section 17B and 17B open by adapter shaft 13A, to release resettlement section 17B and 17B from slotted hole 11H and 11H.Yet as shown in Figure 8, when adapter shaft 13A arrived the upper end H3 of slotted hole 11H and 11H and H3, the spring force that resettlement section 17B and 17B turn back to by torque spring 17S and 17S made resettlement section 17B and 17B be exposed to the posture state of slotted hole 11H and 11H.
In addition, as shown in Figure 9, when being directed downwards when transferring adapter shaft 13A along returning from upper end H3 and H3 in slotted hole 11H and 11H, resettlement section 17B and 17B are by the terminal adapter shaft 13A that keeps of their spoon shape.In addition, under this state, when further downwards transferring adapter shaft 13A, under the state that the adapter shaft 13A that is kept by resettlement section 17B and 17B exerts pressure to anti-stopping bar 17 and 17, promote anti-stopping bar 17 and 17 and make anti-stopping bar 17 and 17 along the anticlockwise motion among the figure.
As shown in figure 10, when adapter shaft 13A had been prevented from being shifted into the part of close bottom H0 and H0 under bar 17 and 17 states that guide, adapter shaft 13A removed with resettlement section 17B and 17B and engages.Thereby, when in slotted hole 11H and 11H when upper end H3 and H3 transfer adapter shaft 13A downwards, adapter shaft 13A crosses the first locking groove H1 and H1 and the second locking groove H2 and H2 and is transplanted on bottom H0 and H0 reposefully under the states that are prevented from bar 17 and 17 guiding, thereby does not enter the first locking groove H1 and the H1 or second locking groove H2 and the H2.
In addition, because adapter shaft 13A is manipulated into bottom H0 and the H0 that is pressed towards slotted hole 11H and 11H, therefore, adapter shaft 13A arrives bottom H0 and H0 under the state of 14C of lower jaw portion that presses down the hook 14 that is exposed to bottom H0 and H0 and 14 and 14C.As a result, as shown in Figure 6, hook 14 and 14 is rotated along the clockwise direction among the figure, the posture state that is positioned in the upside of adapter shaft 13A with the 14B of maxilla portion that hook 14 and 14 placed hook 14 and 14 and 14B.
When hook 14 and 14 was placed in aforesaid state, hook 14 and 14 engaged engagement arm portion 15C and 15C, thereby hook 14 and 14 is locked in the state that adapter shaft 13A is maintained at initial position once more.As a result, support portion 4A being remained on once more support portion 4A turns back to initial position, is the state of the posture of the position before support portion 4A moves forward.
The using method of this embodiment then, is described.
With reference to Fig. 1, collide under the nonevent common state in vehicle rear-side, the vehicle seat used 1 support portion 4A that is in headrest 4 is maintained at the state of the posture of initial position.When vehicle rear-side collision took place, the back of seat load that is applied by seated person is pressure pressure acceptance division 21 backward.As a result, transmit cooresponding operating effort, make joint-releasing engagement member 15 rotate via operation cable 40 and push rod 50.
Thereby, discharge support portion 4A from the state that is maintained at initial position.As a result, as shown in Figure 8, support portion 4A is owing to the bias force of extension spring 16 moves to the collision ready position.In addition, the support portion 4A that moves to the collision ready position can accommodate because from the collision impact of the rear side of the head of seated person and the head of sweptback seated person.
Thereby, vehicle seat used according to this embodiment, because support portion 4A is connected to headrest base portion 4C and engages the simple structure of path of navigation (slotted hole 11H and 11H) slidably, under the state that keeps support portion 4A with respect to the inclination attitude of headrest base portion 4C, support portion 4A can move from the sweptback collision ready position of initial position to the head that can prevent seated person.
In addition, stop motion mechnism is set.Even support portion 4A is subjected to the load from the head of seated person when arriving the collision ready position, stop motion mechnism can prevent that also support portion 4A is pushed back.Stop motion mechnism is made of the connected structure that support portion 4A and headrest base portion 4C engage each other slidably.Therefore, the sweptback structure that can be used in the head that prevents seated person is simplified and is rationalized.
In addition, formation can prevent the locking groove (the first locking groove H 1 and H 1 and second locking groove H2 and the H2) that support portion 4A is pushed back by the head of seated person in path of navigation (slotted hole 11H and 11H), wherein, support portion 4A slides along this path of navigation (slotted hole 11H and 11H).Therefore, though when support portion 4A when working direction moves, can prevent that also the head back of seated person from tilting.As a result, can simplify this structure.
In addition, be provided with and engage anti-locking mechanism ( anti-stopping bar 17 and 17 and torque spring 17S).When support portion 4A when working direction moves, engage anti-locking mechanism and allow adapter shaft 13A in it advances mobile way, to engage locking groove (the first locking groove H1 and H1 and second locking groove H2 and the H2).On the contrary, when support portion 4A from the collision ready position along returning direction when moving, engage anti-locking mechanism and can guide adapter shaft 13A, make adapter shaft 13A can cross locking groove (the first locking groove H1 and H1 and second locking groove H2 and the H2).Therefore, can make support portion 4A turn back to initial position reposefully.
In addition, path of navigation (slotted hole 11H and 11H) corresponding to the moving direction of support portion 4A forward and extend upward.Therefore, support portion 4A can move under the state that roughly keeps its inclination attitude.As a result, can be kept for supporting the receiving position of support portion of the head of seated person.
Embodiments of the present invention have been described above.Yet, can implement the present invention in a variety of forms.
For example, can be as the link component of Figure 15 and configuration shown in Figure 16 and be shaped binding headrest base portion and support portion.In addition, can and be shaped as Figure 15 and configuration shown in Figure 16 as the slotted hole of path of navigation.Especially, as shown in figure 15, link component and slotted hole can be configured to criss-cross.On the contrary, as shown in figure 16, can connect link component pivotly, make slotted hole can be positioned in the top of link component in the position of lower end near the headrest base portion.In addition, in these variations, link component is configured in the outside of headrest base portion.Yet link component is not limited to this configuration.
In addition, as disclosed in the TOHKEMY 2005-104259 communique, head rest moving mechanism can be configured to when making cable move desired distance, and the cooresponding distance of miles of relative movement with cable can directly be moved along working direction in the support portion of headrest.
In addition, be formed on the path of navigation of headrest in the base portion and be not limited to the slotted hole that forms through slot shown in above-mentioned embodiment.That is to say that path of navigation can have the various ways that can accommodate the support portion slidably.Especially, path of navigation can form broad ways recessed be formed on groove at the bottom of the band of headrest in the base portion.In addition, path of navigation can form the rail-like rib, and this rail-like rib is formed in the headrest base portion, slidably guide support portion.
In addition, in this embodiment, path of navigation corresponding to the moving direction of support portion forward and extend upward.Yet path of navigation can be configured to forward or extend upward.Yet, must be noted that when the support portion along working direction or return direction when moving, can easily change the inclination attitude of support portion.
In addition, being formed on locking groove in the path of navigation can be locking groove only.On the contrary, locking groove also can be the locking groove more than three.In addition, locking groove must be configured to when return the support portion, can make the junction surface (adapter shaft) of support portion rotate and cross all locking grooves and move along with anti-stopping bar.
Claims (4)
- One kind vehicle seat used, this is vehicle seat used to have head rest moving mechanism, when detecting the vehicle rear-side collision, the support portion that this head rest moving mechanism can be used in the headrest of the head that supports seated person relatively moves with respect to back of seat, thereby near described support portion, location, described head ground, described head rest moving mechanism comprises:Link component, it makes the described support portion of described headrest connected to each other with the headrest base portion that is supported on the described back of seat; AndPath of navigation, it is formed in the described headrest base portion, and described path of navigation can be accommodated described support portion slidably, to determine the postural position of described support portion, wherein, can change the posture of described support portion rotationally via described link component with respect to described headrest base portionWherein, the shape of described path of navigation is formed along with described link component rotates and makes the initial position of described support portion before taking place from the vehicle rear-side collision with respect to described headrest base portion forward and be moved upwards up to the collision ready position,Be formed on described path of navigation in the described headrest base portion and form and have along the recessed concavity of the Width of described headrest base portion, set junction surface, described support portion forms has the convex that can engage with the path of navigation of concavity,Recessed locking groove is formed on described junction surface is directed to the described path of navigation of described collision ready position from described initial position; When in described path of navigation when the back promotes described junction surface, described locking groove can be accommodated described junction surface; Described locking groove is formed in the process that moves along working direction at described junction surface, and when when pressing described junction surface from the load of described head, described locking groove is accommodated described junction surface and prevented that described junction surface is pushed rearward back,Engage anti-locking mechanism and be arranged at described headrest base portion; When move along direction of advance from described initial position to described collision ready position in described path of navigation at described junction surface; The anti-locking mechanism of described joint allows described junction surface to enter the described locking groove that is formed in the described path of navigation in the mobile way of advancing; When described junction surface along returning direction when moving from described collision ready position to described initial position; The anti-locking mechanism of described joint can stop described junction surface to enter described locking groove; Thereby make described junction surface cross described locking grooveThe anti-locking mechanism of described joint comprises anti-stopping bar of arm shape and spring member, and this anti-stopping bar is pivotally connected to described headrest base portion, and this spring member remains on described anti-stopping bar and makes described anti-stopping bar be exposed to the posture state of described path of navigation,Described anti-stopping bar has and is formed on its leading section and can keeps along the resettlement section of returning the described junction surface that direction moves, described anti-stopping bar can rotate and guide the described junction surface that is kept by described resettlement section so that described locking groove is crossed at described junction surface movesWhen described junction surface when working direction moves, described anti-stopping bar allows described junction surface to move along working direction under the state of being pushed open by described junction surface, when described junction surface is mobile near described collision ready position ground, described anti-stopping bar is removed with described junction surface and is engaged, can keep the edge to return the posture state at the described junction surface that direction moves so that described anti-stopping bar turns back to described anti-stopping bar.
- 2. according to claim 1 vehicle seat used, it is characterized in that, described head rest moving mechanism comprises stop motion mechnism, make to arrive described collision ready position in described support portion and limit under the state that in described path of navigation, moves at set junction surface, described support portion that cause and load that be applied to described support portion can play the stressed effect that the described junction surface that makes described support portion is moved further along working direction by receding of described head along working direction.
- 3. according to claim 1 and 2 vehicle seat used, it is characterized in that, in described path of navigation, form along a plurality of locking grooves of described path of navigation location.
- 4. according to claim 1 and 2 vehicle seat used, it is characterized in that described path of navigation is with respect to described headrest base portion forward and extend upward.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006235359A JP4894419B2 (en) | 2006-08-31 | 2006-08-31 | Vehicle seat |
| JP235359/2006 | 2006-08-31 | ||
| JP235353/2006 | 2006-08-31 | ||
| JP2006235353A JP4872544B2 (en) | 2006-08-31 | 2006-08-31 | Vehicle seat |
| PCT/JP2007/063113 WO2008026372A1 (en) | 2006-08-31 | 2007-06-29 | Seat for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101522466A CN101522466A (en) | 2009-09-02 |
| CN101522466B true CN101522466B (en) | 2011-11-02 |
Family
ID=39239332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800376323A Expired - Fee Related CN101522466B (en) | 2006-08-31 | 2007-06-29 | Seat for vehicle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4872544B2 (en) |
| CN (1) | CN101522466B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5277898B2 (en) * | 2008-11-20 | 2013-08-28 | トヨタ紡織株式会社 | Vehicle seat headrest |
| JP5387112B2 (en) * | 2009-04-17 | 2014-01-15 | トヨタ紡織株式会社 | Active headrest |
| US9132751B2 (en) * | 2012-07-26 | 2015-09-15 | Leggett & Platt Canada Co. | Remote damping system |
| CN103963674A (en) * | 2013-01-29 | 2014-08-06 | 佛吉亚（中国）投资有限公司 | Automobile seat and active safety headrest |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6082817A (en) * | 1997-02-27 | 2000-07-04 | Inova Gmbh Technische Entwicklungen | Motor vehicle seat |
| DE10054793A1 (en) * | 1999-11-18 | 2001-05-23 | Witte Velbert Gmbh & Co Kg | Headrest arrangement for vehicle seats which swings forward and upwards during a collision |
| DE10224060C1 (en) * | 2002-05-31 | 2003-07-24 | Daimler Chrysler Ag | Headrest for automobile passenger seat adjustable between different working positions and returned to initial position in rear impact situation |
| US6749256B1 (en) * | 2003-09-08 | 2004-06-15 | Lear Corporation | Vehicle seat having a movable head restraint |
| DE10335268B3 (en) * | 2003-08-01 | 2004-12-23 | Itw Automotive Products Gmbh & Co. Kg | Headrest for automobile passenger seat, has fixed plate-shaped carrier component and relatively displaced plate-shaped carrier element used for protecting neck of passenger upon rear collision |
-
2006
- 2006-08-31 JP JP2006235353A patent/JP4872544B2/en not_active Expired - Fee Related
-
2007
- 2007-06-29 CN CN2007800376323A patent/CN101522466B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6082817A (en) * | 1997-02-27 | 2000-07-04 | Inova Gmbh Technische Entwicklungen | Motor vehicle seat |
| DE10054793A1 (en) * | 1999-11-18 | 2001-05-23 | Witte Velbert Gmbh & Co Kg | Headrest arrangement for vehicle seats which swings forward and upwards during a collision |
| DE10224060C1 (en) * | 2002-05-31 | 2003-07-24 | Daimler Chrysler Ag | Headrest for automobile passenger seat adjustable between different working positions and returned to initial position in rear impact situation |
| DE10335268B3 (en) * | 2003-08-01 | 2004-12-23 | Itw Automotive Products Gmbh & Co. Kg | Headrest for automobile passenger seat, has fixed plate-shaped carrier component and relatively displaced plate-shaped carrier element used for protecting neck of passenger upon rear collision |
| US6749256B1 (en) * | 2003-09-08 | 2004-06-15 | Lear Corporation | Vehicle seat having a movable head restraint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4872544B2 (en) | 2012-02-08 |
| JP2008056089A (en) | 2008-03-13 |
| CN101522466A (en) | 2009-09-02 |
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Granted publication date: 20111102 Termination date: 20200629 |