CN100538960C - Electromagnetic switch and electric component - Google Patents

Abstract

Electromagnetic switch is carried out switching manipulation by the o that is subjected to action of reset spring, its end plates magnetically is coupled to the yoke main body of being made by magnetic material that joins o to, yoke main body 19 is clamped to therminal retainer, mobile core adjoins movable contact, the axial pars intermedia office of the centre bore in bobbin and mobile core be relatively fixed core in abutting connection with and location and be fixed to the end wall of yoke main body, and back-moving spring is presented between fixed core and the mobile core to promote when cutting off the power supply and to locate mobile core 38 to therminal retainer, size with this mobile core can reduce with the saving electric power consumption, and is convenient to size Control.

Description

Electromagnetic switch and electric component

Technical field

Relate generally to of the present invention moves the electromagnetic switch of movable contact, making movable contact with the fixed contact contact with separate by the electric current of opening or be closed to coil, thereby connects or disconnects conductivity between the pair of fixed contacts.

The invention further relates to the electromagnetic switch that comprises o, solenoid has the coil that roll twines, bobbin has centre bore, solenoid produces electromagnetic force when energising, be used for movable contact and pair of fixed contacts are conducted, the invention still further relates to back-moving spring, spring is used to apply spring force to separate movable contact from fixed contact when o cuts off the power supply.

The invention further relates to electric component, wherein cap spare is assembled to the open surfaces of the container that contains electric parts, and liquid sealing material is poured into the upper surface of cap spare with the bonding part between airtight container and the cap spare.

Background technology

For example announce known electromagnetic switch the No 27550/1989 (patent document 1) from Japanese Utility Model, wherein plunger is inserted in the centre bore that is provided in the o and surpasses the whole axial length of centre bore substantially, when when energising the plunger spring force that overcomes back-moving spring be pulled in the o, therefore movable contact and fixed contact are conducted.

For with remote operation opening and closing current circuit, electromagnetic switch is suitable for mobile movable contact, makes the influence that it is subjected to electromagnet to contact with fixed contact or to recess from fixed contact.

As this type of electromagnetic switch, in patent document 1, electromagnetic actuator has been described, it has electromagnet and armature and closely is sealed in the container.

As another example of this type of electromagnetic switch, the plate terminal member integrated of cicada and fixed contact in the open No349395/1994 (patent document 2) of Japan Patent for example, it is press fitted into and is formed in the interior seam of socket base portion, is used for being connected with the plug of wire harness.

Mention in passing,, depend on the attachment position of electromagnetic switch, need draw plunger with the strong electromagnetic force that surpasses the plunger self gravitation and overcome the spring force of back-moving spring in addition for the device that in patent document 1, discloses.The amplification that this has increased the so many power consumption of o and has caused the whole dimension level of electromagnetic switch.

Then, can consider to make the movable contact that adjoins with the mobile core relative, thereby reduce size of mobile core and the electromagnetic force that reduces to need to be produced by o be less with this with fixed contact.Yet it is important in the case that the yardstick between mobile core and fixed core is controlled at.

Summary of the invention

The present invention considers that aforesaid situation has realized and the purpose of this invention is to provide the electromagnetic switch of the size that can reduce mobile core, this mobile core adjoins movable contact and relative with fixed core, therefore it is less setting the electromagnetic force that needs to be produced by o, and is convenient to the yardstick control between fixed core and mobile core.

According to the existing structure of in patent document 2, describing, prevent terminal board from the base portion slippage though be connected to the opening of seam by the check pawl that will be arranged in terminal board base portion part, terminal board when the coupling part of seam has in the attachment of the repetition of plug with lax in breaking away from.

The present invention realizes, provides a kind of electromagnetic switch to overcome in above-mentioned shortcoming of the prior art and main purpose of the present invention, and it is improved to and makes terminal board not lax to the coupling part of the seam that is formed on base portion.

According to the existing structure of describing in patent document 1,0 type circle need be attached to the bonding part between container and the covering, joins the open surfaces of container to the covering that will have fixed contact fixed thereon, and electromagnetic actuator is sealed in the container.Therefore, the attachment of 0 type circle partly need be formed on the container or on the covering, and needs additional work so that 0 type circle to be installed in addition.

Though also known by the cast heat-curing resin material, epoxylite for example, with with seal of vessel to the bonding part between container and the covering, but resin material must excessive a little cast in the method so that it occupies sealed part sufficiently.Therefore, need remaining material cost and also need long curing time.That is, consider economy and productivity ratio, then any above-mentioned method is not gratifying.

The present invention has also realized being used to solve this shortcoming of the prior art and the purpose of this invention is to provide electric component, wherein the bonding part between container and the cap spare by economy and have large-duty encapsulating method and seal.

For realizing aforesaid purpose, according to first aspect, the invention provides electromagnetic switch, comprising:

Have the o of the coil that roll twines, bobbin has centre bore, and when energising solenoid generation electromagnetic force, be used for movable contact and pair of fixed contacts conducts and

Back-moving spring, back-moving spring is used to apply the spring force that separates movable contact from fixed contact when o cuts off the power supply, wherein:

The end plate by magnetic material made relative with the other end of bobbin magnetically is connected to the yoke main body of being made by magnetic material; The yoke main body has end wall at an end relative with bobbin one end; And engage with o; To form yoke with the yoke main body; The other end of yoke main body is clamped and be fixed to the therminal retainer of being made by nonmagnetic substance; Therminal retainer has the coil contact terminal that the two ends by its a pair of and coil are connected; With a pair of contact splicing ear that integrally has fixed contact; And the other end of end plate with respect to bobbin sandwiched

Mobile core adjoins movable contact, movable contact can separate with two fixed contact contacts or from them, be inserted into centre bore at least in part and on the middle axial direction of centre bore, be relatively fixed core in abutting connection with the end wall of yoke main body and be positioned and fixed with mobile core, and back-moving spring is presented between fixed core and the mobile core, so that the spring force of mobile core being pressed and navigating on the therminal retainer side to be provided when o cuts off the power supply.

According to a second aspect of the invention, as in a first aspect of the present invention, describing, fixed core integrally has and is inserted into centre bore and the bar shaped part relative with mobile core, and stretches out from bar shaped part one end and be clipped in flange portion between yoke main body end wall and bobbin one end in radial direction.

According to a third aspect of the invention we, as describing in a second aspect of the present invention, the yoke main body clamps and is fixed on the therminal retainer, to apply from the therminal retainer to the end plate and bobbin is pressed the power of the side of yoke main body end wall.

According to a forth aspect of the invention, as in any of the third aspect, describing of the present invention first, receiver hole difference coaxial arrangement on the apparent surface of mobile core and fixed core at the end is arranged, and partly be received in the blind end of the two ends of the spiral back-moving spring in the receiver hole in abutting connection with two receiver holes.

According to a fifth aspect of the invention, as in any of fourth aspect, describing of the present invention first, o, yoke, fixed core, mobile core and back-moving spring are included in the hydrostatic column at the end, the therminal retainer that has sealed container open end engages and is fixed on the container, to form towards outer concave portion with container is collaborative, and embedding agent is filled into concave portion adding the exterior periphery of burying therminal retainer and the slit between the container, and the slit between each and two coil connecting terminal of therminal retainer and two the contact splicing ears.

In one aspect of the method, the invention provides electromagnetic switch, comprise the terminal base portion made by insulating material or retainer, be inserted into the terminal board in the seam that is formed in terminal base portion or the retainer and be positioned at electromagnet (bobbin and coil) that wherein the protrusion of the base end of abutting end daughter board (fixed contact) is being arranged on the bobbin of electromagnet on the surface of the inner surface of terminal base portion towards terminal base portion inner surface from terminal base portion inside.

Further, the invention provides electric component, electromagnetic relay for example, the cap spare (terminal base portion) that wherein has the terminal that is fixed to the upper joins to and is used to comprise for example open surfaces of the container of the electric parts of electromagnetic actuator, and liquid sealing material (for example epoxide resin material) joins the upper surface of cap spare to the bonding part between airtight container and the cap spare, the surface of its medium dip is formed into the upper surface on cap spare surface, and the surface of this inclination is made for the higher and outside reduction of core.Liquid sealing material particularly preferably is poured near the highest part of inclined surface.

According to a first aspect of the invention, because fixed core is relative with the axial mid portion of the centre bore of mobile core in being formed on the bobbin of o, the size of mobile core can reduce.Therefore therefore, may set lessly from the electromagnetic force that o produced need, to reduce the electric power consumption of o and to reduce the whole dimension of electromagnetic switch.Further, because fixed core is in abutting connection with the end wall of yoke main body location and fixing, and when o cuts off the power supply, the mobile core that will have the back-moving spring of inserting with respect to fixed core by back-moving spring is pushed to therminal retainer, be used to sandwich with the yoke main body and form the end plate of yoke and with respect to the o of end wall, then the size Control between fixed core and the mobile core can easily be carried out by the size between control yoke main body end wall and the therminal retainer.

Further, according to second feature of the present invention, fixed core can be by sandwiching that flange part assigns to stably locate and fixing, flange portion is provided to fixed core between the end of the end wall of yoke main body and bobbin, and consider magnetic loop, by having amplified the contact area of yoke main body and fixed core, this is favourable.

According to a third aspect of the invention we, because the yoke main body clamps and be fixed to therminal retainer, to apply from the therminal retainer to the end plate and bobbin promotes to be pressed onto power on the side of end wall of yoke main body, for bobbin, promptly the positioning accuracy for coil is modified.

According to fourth aspect present invention, because partly be received in the blind end of the two ends of the spiral back-moving spring in the receiver hole that the end is arranged that is arranged into mobile core and fixed core respectively respectively in abutting connection with two receiver holes, can be set greatly so being used to of fixed core adsorbed the adsorption area of mobile core, compare with the situation between the outer peripheral portion that back-moving spring is presented to fixed core and mobile core is divided simultaneously, this makes back-moving spring can apply sufficient spring load.

Further, according to a fifth aspect of the invention, the watertightness of container can be improved, and o, yoke, fixed core, mobile core and back-moving spring are included in the container.

According to a sixth aspect of the invention, because for example receive, can prevent being absorbed in and being out of shape and not adding the anti-slip shape of another part especially of terminal board with uncomplicatedization terminal board when attachment is applied to the protrusion that power on the terminal board is arranged to bobbin during plug.Therefore, consider and improve the attachment and the durability of separating that repeats that this can provide good effect, and the structure of this type of electromagnetic switch of uncomplicatedization.

According to the 7th to the 9th aspect of the present invention, because liquid sealing material arrives the outer peripheral part that needs sealing along the Surface runoff that tilts, can only pour into a mould minimum encapsulant requirement does not have loss to part to be sealed.Therefore, consider the economy and the productivity ratio of the electric component that improves Production Example such as electromagnetic relay, this can provide good effect.

Description of drawings

Now, by embodiments of the invention, in conjunction with the accompanying drawings the preferred embodiments of the present invention will be described.

Fig. 1 is the vertical cross-section according to the electromagnetic switch of first aspect present invention;

Fig. 2 is the cross sectional view along 2-2 line among Fig. 1;

Fig. 3 is the decomposition diagram of electromagnetic switch, and its coil is omitted;

Fig. 4 is the cross sectional view along 4-4 line among Fig. 1;

Fig. 5 is the overall perspective of electromagnetic switch;

Fig. 6 is the perspective view of the outward appearance of device under the assembling situation according to another aspect of the present invention;

Fig. 7 is the upper plane view of this device;

Fig. 8 is the cross sectional view of III-III line in Fig. 7;

Fig. 9 is the cross sectional view of IV-IV line in Fig. 7; With

Figure 10 is the zoomed-in view on top of the point of protrusion used in this invention.

Embodiment

At first, in Fig. 1 and Fig. 2, electromagnetic switch according to first aspect present invention has magnetic solenoid 13, it produces electromagnetic force and is used for movable contact 12 is conducted at electric current supply (when switching on) with pair of fixed contacts 26a, 26a, with have back-moving spring 14, be used to apply spring force, so that movable contact 12 is separated from fixed contact 26a, this electromagnetic switch for example is used for vehicle launch device circuit when o 13 outages.

Also with reference to figure 3, o 13 is formed by roll 16 winding arounds 17, and bobbin 16 is made by synthetic resin and had a centre bore 15.Bobbin 16 integrally have the cylindrical part 16a that defines centre bore 15, radial direction from the end of cylindrical part 16a near the outward extending square second flange 16c outward extending circular first flange 16b and the other end at it in the radial direction at cylindrical part 16a, make that the other end of cylindrical part 16a is outstanding slightly.Coil 17 twines between the first and second flange 16b and 16c around cylindrical part 16a.

O 13 is centered on by yoke 18, and yoke 18 end plate 20 that has the yoke main body of being made by magnetic material and join o 13 to 19 and made by magnetic material and magnetically be coupled to yoke main body 19.Yoke main body 19 integrally has the first side wall 19a and the second sidewall 19b, be used on its both sides, sandwiching bobbin 16, with have end wall 19c, it connects a first side wall 19a and second a sidewall 19b end separately, it also with an end of bobbin 16, promptly the first flange 16b is relative, and forms the U-shaped structure substantially.Further, the clamp arm 19d that extends in both sides, 19d is integrally outstanding, with flexible to the other end of the first side wall 19a, and can integrally give prominence at the core of the other end of the second sidewall 19b by aduncate clamping part 19a, to form rectangular aperture 21 with respect to the other end of second sidewall 19.

Further, end plate 20 is orientated as with respect to end wall 19c to sandwich bobbin 16 and to form the plate shape, and have patchhole 22, patchhole 22 forms by it and inserts from the second flange 16c of the cylindrical part 16a in the bobbin 16 and in abutting connection with the protrusion of the second flange 16c of bobbin 16.Further, end plate 20 has a pair of first location hole 23,23 respectively, be used to engage a pair of first alignment pin 16d, the 16d of the second flange 16c that is projected into bobbin 16, with a pair of second location hole 24,24, be used to engage a pair of second alignment pin 16e, the 16e of the second flange 16c that is projected into bobbin 16, the diameter of each of second location hole 24,24 is less than the diameter of the first alignment pin 16d, 16d.Then, by engage the first alignment pin 16d, 16d to first location hole 23,23 and engage the second alignment pin 16e, 16e to second location hole 24,24 and locating end plate 20 under the state of yoke main body 19, end plate 20 be provided to the yoke main body 19 that joins o 13 on the other end of two sidewall 19a, 19b on inner surface contact, magnetically be coupled with this yoke main body 19 and end plate 20.

Further, be used to engage and keep connecting protrusion 27a, 27a to divide to be clipped to the pair of engaging at two ends of the coil 17 that twines around bobbin 16 and the second flange 16c that retaining part 16f, 16f are projected into bobbin 16, wherein protrusion 27a, 27a integrally are arranged into respectively on a pair of coil connecting terminal 27,27. Depression 28 and 28 is formed into end plate 20 in the both sides of second location hole 24 and assembles and retaining part 16f to arrange.

Also with reference to figure 4, the other end of yoke main body 19, promptly each other end of two sidewall 19a and 19b is clamped to the therminal retainer of being made by the nonmagnetic substance of for example synthetic resin 29, is used for sandwiching end plate 20 with respect to the other end of bobbin 16.Therminal retainer 29 integrally has the retainer main portion 29a that forms rectangular shape, its longitudinal direction aligns with both sides sidewall 19a that arranges yoke main body 19 and the direction of 19b, with have the protrusion of connection 29b, connect first abutment surface 30 and second abutment surface 31 on the inner surface of the other end that protrusion 29b has two sidewall 19a abutting against yoke main body 19 respectively and 19b.

Connection protrusion 29b has the concave portion 32 and 32 on the both sides that are formed on first abutment surface 30, be respectively applied for two side-prominent engaging arms 19d on the other end that clamps and be bonded on the first side wall 19a in the yoke main body 19, make engaging arms 19d each bend to the right angle.Further, connection protrusion 29b has coupling recess and divides 33, make that it is openings at the core of second abutment surface 31, with the outstanding clamping part 19e of the core of the other end that is bonded on the second sidewall 19b, the state of joint curves inwardly for clamping part 19e.Further, a plurality of protrusions 34,34, are projected into coupling part 29b, with the end plate 20 of adjacency yoke 18 by for example three.

Then, divide 32,32 to coupling recess, and divide 33 to coupling recess, therminal retainer 29 is clamped and is fixed to the other end of yoke main body 19 by clamping and engage calking part 19e by clamping and gripper arm 19b, 19b.By clamping and fixing, protrusion 34,34 is compressed against on the end plate 20 and partly distortion.That is, yoke main body 19 is by joint filling and be clamped to therminal retainer 29, with from therminal retainer 29 to end plate 20 and bobbin 16 apply pressure to the side of the end wall 19c of yoke main body 19.

In the connection protrusion 29b of therminal retainer 29, a pair of have in the side projection relative and be set at fixed contact 26a, the 26a location of parallel arc coupling part 26b and be arranged as with end plate 20 have the distance of pre-determining mutually, and fixed contact 26a, 26a integrally are arranged into the contact splicing ear 26,26 by therminal retainer 29.Further, clamp and be fixed at therminal retainer 29 under the situation of the other end of yoke main body 19, in abutting connection with two fixed contact 26a, 26a, being positioned and being fixed to these two fixed contact 26a, 26a connects protrusion 29b from the top of the paired outstanding first alignment pin 16d, the 16d of the second flange 16c of bobbin 16 and the second alignment pin 16e, 16e for each.

Further, a pair of coil connecting terminal 27,27 by therminal retainer 29 integrally has localization part 27b, 27b, localization part 27b, 27b in abutting connection with and be positioned at and connect on the protrusion 29b, and it is outstanding from localization part 27b, 27b to engage and remain to connecting protrusion 27a, the 27a of joint on the second flange 16c that is provided to bobbin 16 and retaining part 16f, 16f.

Retainer main portion 29a be connected protrusion 29b in, opening forms to the reception concave portion 35 of end plate 20 and makes the part of openend be sealed by two fixed contact 26a, 26a, and can be received in the movable contact 12 that coupling part 26b, the 26b of two fixed contact 26a, 26a contact and recess in the reception concave portion 35, make it partly outstanding to o 13 by the part between two contact 26a, the 26a.

Movable contact 12 integrally has the cylindrical part at end 12a is arranged, it is outstanding and have from the openend of cylindrical part 12a that the end is arranged at outward extending flange 12b in the radial direction to o 13 by the part between coupling part 26b, the 26b of two fixed contact 26a, 26a.When flange 12b with the coupling part 26b of two fixed contact 26a, 26a, when 26b contacts, two fixed contact 26a, 26a conduct by movable contact 12, and when flange 12b from the coupling part 26b of two fixed contact 26a, 26a, when 26b recesses, two fixed contact 26a, 26a electricity disconnects.

Divide outstanding guiding protrusion 36 to be integrally formed in the retainer main body 29a from central division at the blind end that receives concave portion 35, and guiding protrusion 36 is inserted into the cylindrical part 12a that the end is arranged of movable contact 12.Be arranged as at the blind end of the cylindrical part 12a that the end is arranged and receive pressurized between the blind end of concave portion 35 around the helical spring 37 of guiding protrusion 36, make movable contact 12 flexibly be setovered, make the flange 12b of current collector 12 be guided and the coupling part 26b of two fixed contact 26a, 26a, the side that 26b contacts by spring 37.Further, the spring load of spring 37 is set at the spring load less than back-moving spring 14.

Movable contact 12 adjoins mobile core 38.Mobile core 38 integrally has bar shaped mobile core main body 38a, and the end of mobile core main body 38a is inserted in the centre bore 15 in the o 13 and the other end that has in main body is in outward extending in the radial direction flange 38b.The core at the other end place of mobile core main portion 38a abuts to form the outer surface on the blind end of the cylindrical part 12a that the end is arranged in movable contact 12 coaxially, adjoins movable contact 12 with this mobile core 38.

The axial pars intermedia office of fixed core 39 in centre bore 15 that is inserted into centre bore 15 at least in part is relative with mobile core 38, and the end wall 19c in abutting connection with yoke main body 19 is located and be fixed as to fixed core 39.That is, fixed core 39 integrally has and is inserted in the centre bore 15 and the bar shaped part 39a relative with mobile core 38 and having from the outward extending diametrically flange 39b of the end of bar shaped part 39a.Flange 39b is put between the end of the end wall 19c of yoke main body 19 and bobbin 16.

Further, the receiver hole 40,41 that the end arranged arranges respectively coaxially at the facing surfaces place of mobile core 38 and fixed core 39, and the two ends that are shaped as spirality and partly are received in the back-moving spring 14 in two receiver holes 40,41 are in abutting connection with two blind ends that comprise hole 40,41.

Then, when o 13 energisings, mobile core 38 attracted to fixed core 39, and the movable contact 12 of flexibly being setovered by spring 37 moves to coupling part 26b, 26b position contacting with two fixed contact 26a, 26a after mobile core 38 moves.On the other hand, when o 13 outage, the be reset spring force of spring 14 of mobile core 38 moves, and overcomes the spring force of spring 37 to press movable contact 12 in the direction of recessing from two fixed contact 26a, 26a.A plurality of flange 12b in abutting connection with movable contact 12 are outstanding from the blind end that receives concave portion 35 with the restriction protrusion 42,42 that moves of restriction movable contact 12, to be arranged to the periphery of guiding protrusion 36.When o 13 outages,,, mobile core 38 is pressed and is navigated to the restriction protrusion 42,42 of therminal retainer 29 via movable contact 12 by the spring force of back-moving spring 14.

Also with reference to figure 5, o 13, yoke 18, fixed core 39, mobile core 38 and back-moving spring 14 are included in the hydrostatic column 44 at the end, and container 44 has the shape of cross section of rectangle substantially, is made by the nonmagnetic substance of for example synthetic resin.

The part of container 44 on open end side forms large diameter cylindrical part 44a, cylindrical part 44a have be formed on the inner surface towards outer sealing step 44b, and the retainer main portion 29a of therminal retainer 29 engages large diameter cylinder type part 44a, with adjacency step 44b.Further, the joint that integrally is formed into the exterior side surfaces of retainer main portion 29a refers to that 46,46 flexibly divide 45,45 to engage with the coupling recess of two positions of the inner surface that is formed on large diameter cylinder type part 44a, and the therminal retainer 29 that has sealed the openend of container 44 engages and be fixed to container 44.

Further, the outer surface of the retainer main portion 29a in therminal retainer 29 joins the openend that is positioned at container 44 under the situation of container 44 at therminal retainer 29, and therminal retainer 29 and container 44 collaborative formation towards outer concave portion 47.

Further, a pair of coil connecting terminal 27,27 and pair of contact splicing ear 26,26 are outwards outstanding from the retainer main portion 29a of therminal retainer 29, and flexible wall section 29d, 29d between a pair of fixation wall part 29c, 29c parallel to each other and a pair of two ends that are arranged in fixation wall part 29c, 29c integrally are projected into retainer main portion 29a, with around 27,27 and two contact splicing ears 26,26 of two coil connecting terminal.Further, for flexibly being out of shape two flexible wall section 29d, 29d, rectangular window 48,48 is formed into flexible wall section 29d, 29d.Then, two fixation wall part 29c, 29c and two flexible wall section 29d, 29d can assemble and flexibly join to the aerial lug of not drawing, and with situation that aerial lug is connected under 27,27 and two contact splicing ears 26,26 of two coil connecting terminal be connected to corresponding female terminal in the aerial lug respectively.

Then, when being connected with the female terminal of aerial lug, two contact splicing ears 26,26 stand to separate from the connection protrusion 29b of therminal retainer 29 power of the fixed contact 26a that integrally is provided to contact splicing ear 26,26.Yet, the outstanding first alignment pin 16d, the 16d of the second flange 16c of bobbin 16 to fixed contact 26a, the 26a of the right top of the second alignment pin 16e, 16e on the side relative with therminal retainer 29, fixed contact 26a, 26a go up separation and can be prevented reliably from connecting protrusion 29b.

Further, in the concave portion 47 that forms by therminal retainer 29 and container 44, fill for example embedding agent 49 of epoxy resin, adding the outer circumferential of burying the retainer main portion 29a in the therminal retainer 29 and the slit between the container 44, and the seam between therminal retainer 29 and 27 and two contact splicing ears 26,26 of two coil connecting terminal.

In retainer main portion 29a, the part 29e of projection is formed into towards the core of the surface of the side relative with container 44, with the reduction of avoiding receiving the intensity that concave portion 35 caused by providing, and embedding agent 49 is filled in the concave portion 47 that removes the protruding part 29b.Further, the outer peripheral surface of the part 29e of projection has tapering, and under the situation that the part 29e of projection makes progress when embedding agent 49 drips to the zone line of part 29e of projection, embedding agent 49 diffusion is with the outer peripheral surface of the part 29e that flows to projection downwards, makes embedding agent 49 fill to remove concave portion 47 the protruding part 29e.

Then, the operation of reference example, because mobile core 38 adjoins the movable contact 12 that can contact or recess pair of fixed contacts 26a, 26a, and relative with mobile core 38 because of the fixed core 39 in the centre bore 15 that need be inserted into bobbin 16 at least in part at the axial mid portion of centre bore 15, so the size of mobile core 38 can reduce.Therefore, need to set lessly, therefore can reduce the power consumption of o 13 and reduce the size of whole electromagnetic switch by the electromagnetic force that o 13 produces.

Further, the end plate 20 relative with the other end of bobbin 16 magnetically is coupled with yoke main body 19 with yoke main body 19, yoke main body 19 has the end wall 19c relative with bobbin 16 1 ends at the one end, and yoke main body 19 engages o 13 to form yoke 18, the other end of yoke main body 19 is clamped to therminal retainer 29, coil connecting terminal 27 at a pair of adjacent coil 17 two ends, 27 and a pair ofly integrally have a fixed contact 26a, the contact splicing ear 26 of 26a, 26 respectively by therminal retainer 29, and therminal retainer 29 sandwiches end plate 20 with respect to the other end of bobbin 16, fixed core 39 in abutting connection with and fixing and navigate to the end wall 19c place of yoke main body 19, and back-moving spring 14 is presented between fixed core 39 and the mobile core 38, promotes and locate mobile core 38 arrives therminal retainer 29 via movable contact 12 spring force to apply when o 13 cuts off the power supply.Therefore, the size Control between fixed core 39 and the mobile core 38 can easily be carried out by the end wall 19c of execution yoke main body 19 and the size Control between the therminal retainer 29.

Further, because integrally having, fixed core is inserted into centre bore 15 and the bar shaped part 39a relative with mobile core 38, and have and stretching out from bar shaped part 39a one end in the radial direction and be put into flange portion 39b between the end of the end wall 19c of yoke main body 19 and bobbin 16, so fixed core 39 can be by sandwiching between an end of the end wall 19c of yoke main body 19 and bobbin 16 that flange portion 39b stably locatees and fixing, and the contact area of yoke main body 19 and fixed core 39 can increase, so that the advantage of considering magnetic loop to be provided.

Further, because yoke main body 19 clamps and is fixed to therminal retainer 29, exert pressure with the end wall 19c to the yoke main body, apply to end plate 20 and bobbin 16 from therminal retainer 29, so bobbin 16, promptly the positional precision of coil 17 can be modified.

Further, because the apparent surface place of receiver hole 40, the 41 difference coaxial arrangement at the end in mobile core 38 and fixed core 39 arranged, and the two ends that partly are received in the spiral back-moving spring 14 in the receiver hole 40,41 respectively are in abutting connection with two blind ends that comprise hole 40,41, can therefore set greatlyyer so being used for of fixed core 39 magnetically adsorbed the adsorption area of mobile core 38, compare with the situation that back-moving spring 14 wherein is presented between the outer peripheral of fixed core 39 and mobile core 38 thus, back-moving spring 14 can provide sufficient spring load.

Further, because o 13, yoke 18, fixed core 39, mobile core 38 and back-moving spring 14 are included in the hydrostatic column 44 at the end, engage and be fixed to container 44 so be used for the therminal retainer 29 of the openend of closed container 44, form towards outer concave portion 47 to work in coordination with container 44, and embedding agent 49 is filled concave portions 47 with the exterior periphery of landfill therminal retainer 29 and the slit between the container 44 at least, and therminal retainer 29 and two coil connecting terminal 27,27 and two contact splicing ears 26, slit between 26, watertightness in the container 44 can be improved, and has comprised o 13 simultaneously in container 44, yoke 18, fixed core 39, mobile core 38 and back-moving spring 14.

Then, other aspects of the present invention Fig. 6 by with reference to the accompanying drawings specifically describes to another embodiment of Figure 10.

Electric component, electromagnetic switch 1 according to the present invention especially comprises electromagnetic actuator part 102 and connector part 103 as shown in Figure 6.Directivity as described below is assumed to the surface of pointing to the accompanying drawing paper, but this only for the convenience described and in actual use directivity can be not restricted to this.

Also as Fig. 7 in Fig. 9 together shown in, electromagnetic actuator part 102 be included in make by insulating material and in the cuboidal container 104 of upper surface place opening, and electromagnetic actuator part 102 comprises bobbin 105, around the yoke 107a that is arranged in coil 106 outsides that splits, the coil 106 that 107b twines, be inserted into the armature 108 of the centre bore 105a of bobbin 105 from bobbin 105 upper ends, be inserted into the core of the centre bore 105a of bobbin 105 from bobbin 105 lower ends, with spiral compression spring 110, between armature 108 and core 109, apply elastic force on its direction that normally armature 108 and core 109 are recessed mutually therein.

The bobbin of being made by insulating material 105 has the flange 111 that is substantially square shape in the top and is substantially round-shaped flange 112 in its lower end, and each flange integrally forms.Then, on the trailing edge of square flange 111, fix a pair of electric current supply terminal board 113 by its base end being press fitted in the aft-opening lateral aperture in the not shown rear edge part that is formed on square flange 111 that goes out, each terminal board 113 has the plate shape shape of elongation, and the axis of axle 105 along the line with its longitudinal direction vertical extent.The respective end of forming the conductor of coil is welded to the base end of electric current supply terminal board 113.

Connector part 103 comprises the socket 114 that is used to receive the plug that is arranged into the Wiring harness terminal end (not shown go out) and the upward opening of anti-slip function is provided, the terminal base portion 115 that integrally forms at the lower end and the socket 114 of socket 114, have the fixed contact 116 that integrally is formed into its base portion end and be fixed to the switch terminals daughter board 117 of terminal base portion 115, be put into the movable contact plate 118 that can move between the upper surface of the lower surface of terminal base portion 115 and fixed contact 116 vertically, and always applying the spiral compression spring 119 of elastic force on the direction of movable contact plate 118 and fixed contact 116 that adjoins each other to the part between terminal base portion 115 and the movable contact plate 118.Then, by the open surfaces of splice terminal base portion 115 to container 104, the element of electromagnetic actuator part 102 is sealed in the container 104.

Two groups of seams 120,121 that extend on fore-and-aft direction are formed into the terminal base portion of being made by insulating material 115, to insert power supply supply side daughter board 113 and switch terminals daughter board 117 by two groups of seams 120,121, each switch terminals daughter board has the shape that is similar to electric current supply terminal board 113 and forms slightly greater than power supply supply side daughter board 113 respectively.Pair of switches terminal board 117 is press fitted in above-mentioned one group of seam 121 simultaneously in advance, and the lower surface with respect to terminal base portion 115 sandwiches movable contact plate 118.Then, the terminal base portion 115 that has a switch terminals daughter board 117 that is assembled into terminal base portion 115 when joint is during to the open surfaces of container 104, and the electric current supply terminal board 113 of square flange 111 that is fixed to bobbin 105 is by seam and be projected into the inside of the socket of integrating with terminal base portion 115 114.

Be formed on switch terminals daughter board 117 base end fixed contact 116 each from switch terminals daughter board 117 bend to the right angle, in the fore-and-aft direction elongation and extend to part between the base end of a pair of electric current supply terminal board 113 in the posterior end of switch terminals daughter board 117.Further, the protrusion 122 that is bent upwards is formed on the front-end and back-end of fixed contact 116, and protrusion 122 is press fitted in the hole 123 in the lower surface that is formed on terminal base portion 115, with this position-sensing switch terminal board 117 and for they provide anti-slip function.

On the upper surface of the square flange 111 of bobbin 105, the axis outstanding (four positions) of two groups of protrusion 124,125 axles 105 along the line.Protrusion 124,125 is corresponding to the corresponding end of pair of fixed contacts 116 on fore-and-aft direction, and when the terminal base portion 101 that will have the switch terminals daughter board 117 that is assembled on it joined on the open surfaces of container 104, the top of protrusion 124,125 was in abutting connection with the corresponding corresponding end of fixed contact 116 on fore-and-aft direction.

The top of each of protrusion 124,125 is a point one-tenth conical in shape as shown in Figure 10.When the top of point was pushed to fixing contact 116, pressure contacted the upper surface of distortion of the top of point and fixed contact 116 by the reaction of distortion with the lower surface of terminal base portion 115.Even caused production error or assembly error in each part, this also can provide with respect to the reliable location of the vertical direction of switch terminals daughter board 117 and anti-rattle function.

The protrusion that is similar to above-mentioned protrusion therein is arranged as at least three, and each protrusion has identical angle and is being suitable for making protrusion in abutting connection with yoke 107a during to container 104 when assembling terminal base portion 112 on the basal surface of container 104, and under the situation that the top of the point of protrusion is out of shape in the same manner described above, yoke 107a crackling can be prevented from.

The convex portion 126 of projection is formed on the core of the socket 114 inner upper surfaces of locating of the terminal base portion of being made by insulating material 115, and its height increases to the center.When under the situation about making progress at convex portion 126 when hanging near the top surface of convex portion 126 nozzle N cast epoxy resinous materials or similar material, cause epoxylite material 127 to flow to the lower part of inclined surface C along the inclined surface C of convex portion 126, promptly flow to the outer peripheral of terminal base portion 115 and flow into terminal base portion 115 and container 104 between the bonding part in sealed engagement part completely.Further, because by it respectively the seam 120,121 of insertion end daughter board 113,117 be formed on the minimum surface of terminal base portion 115, each of terminal board 113,117 and stitch 120,121 each between the slit also sealed by epoxylite material 127.

As mentioned above, by the predetermined direction that drops to the outside along inclined surface C that flow to of guiding liquids encapsulant, even when using the encapsulant of relative high viscosity, part to be sealed also can the sealing reliably by minimum amount.For the profile of convex portion 126, though the flat pyramidal or pyramidal shape of taper can consider, be exactly enough as long as form the surface C of the inclination that drops to the outside.

The socket 114 of the electromagnetic switch 101 that is connected to as mentioned above to be assembled when the plug of wire harness and from electric current supply end plate 113 during to coil 106 power supplies, coil 106 is energized to produce the magnetic flux that passes through core 109 and armature 108 by yoke 107.Then, armature 108 is overcome the elastic suction of spiral compression spring 110 to core 109, to eliminate the pressure that separates movable contact plate 118 from fixed contact 116.Therefore, movable contact plate 118 with armature 108 by the resilient movement of spiral compression spring 10 and in abutting connection with pair of fixed contacts 116, so that two fixed contacts 116 electrically contact mutually.

When plug is connected to socket 114, though downward power, be that the power of force switch terminal board 117 in container 104 is applied on the switch terminals daughter board 117, but because the fixed contact of integrating with switch terminals daughter board 117 116 is highlighted 124,125 receptions of thing in abutting connection with the protrusion 124,125 of the upper surface that is projected into bobbin 105 and the downward power that is applied to switch terminals daughter board 117, so needn't worry that switch terminals daughter board 117 is lax.

The composition of electromagnetic switch according to a preferred embodiment of the invention is lax effectively to preventing terminal board, and this also equally can be applicable to be inserted into the electromagnetic relay in the socket of base plate, etc.

The composition of electric component according to a preferred embodiment of the invention has the effect that is sealed in the part between container and the covering, and this also equally can be applicable to for example electromagnetic relay or transformer.

Though embodiments of the invention are described, the present invention is not restricted to the above embodiments, and the of the present invention different design variation that does not depart from described in the scope of claims of patent is fine.

Claims (5)

1. electromagnetic switch, it comprises:

Have the o (13) of the coil (17) that roll (16) twines, bobbin (16) has centre bore (15), and o (13) produces electromagnetic force when energising, be used for movable contact (12) and pair of fixed contacts (26a) conducts and

Back-moving spring (14), back-moving spring (14) is used to apply the spring force that separates movable contact (12) from fixed contact (26a) when o (13) cuts off the power supply, wherein,

Make and have by magnetic material and make and the yoke main body (19) of the end plate (19c) relative with the other end of bobbin (16) engages with o (13) by magnetic material, and the end wall (20) that the end of being made by magnetic material with bobbin (16) is relative magnetically is coupled to yoke main body (19), to form yoke (18) with yoke main body (19), the other end of yoke main body (19) clamps and is fixed to the therminal retainer of being made by nonmagnetic substance (29), therminal retainer has respectively coil contact terminal (27) and a pair of contact splicing ear that integrally has fixed contact that the two ends by its a pair of and coil (17) are connected, and the other end of end plate (20) with respect to bobbin (16) sandwiched

Mobile core (38) adjoins movable contact (12), movable contact (12) can separate with two fixed contacts (26a) contact or from them, be inserted into centre bore (15) at least in part and on the middle axial direction of centre bore (15) with mobile core (38) be relatively fixed core in abutting connection with and the end wall (19c) of yoke main body (19) that are positioned and fixed, and back-moving spring (14) is presented between fixed core (39) and the mobile core (38), so that the spring force of mobile core (38) being pressed and navigating to therminal retainer (29) side to be provided when o (13) cuts off the power supply, wherein fixed core (39) integrally has and is inserted into centre bore (15) and the bar shaped relative with mobile core (38) part (39a), with have in radial direction from the bar shaped part outward extending flange portion of (39a) end (39b), and flange portion (39b) is clipped between the end wall (19c) and bobbin (16) one ends of yoke main body (19).

2. electromagnetic switch according to claim 1, wherein yoke main body (19) clamps and is fixed to therminal retainer (29), to apply from therminal retainer (29) to end plate (20) and bobbin (16) is pressed onto the power of side of the end wall (19c) of yoke main body (19).

3. electromagnetic switch according to claim 1, wherein there is the receiver hole (40,41) at the end to go up coaxial arrangement respectively, and partly is received in the blind end of the two ends of the spiral back-moving spring (14) in the receiver hole (40,41) in abutting connection with two receiver holes (40,41) the apparent surface of mobile core (38) and fixed core (39).

4. electromagnetic switch according to claim 2, wherein there is the receiver hole (40,41) at the end to go up coaxial arrangement respectively, and partly is received in the blind end of the two ends of the spiral back-moving spring (14) in the receiver hole (40,41) in abutting connection with two receiver holes (40,41) the apparent surface of mobile core (38) and fixed core (39).

5. according to each described electromagnetic switch of claim 1 to 4, o (13) wherein, yoke (18), fixed core (39), mobile core (38) and back-moving spring (14) are included in the hydrostatic column (44) at the end, the therminal retainer (29) that has sealed container (44) openend engages and is fixed to container (44), to form towards outer concave portion (47) with container (44) is collaborative, and embedding agent (45) is filled into concave portion with the outer periphery of landfill therminal retainer (29) and the slit between the container (44), and the slit between therminal retainer (29) and two coil connecting terminal (27) and two the contact splicing ears (26).

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