WO1995000053A1 - Verstellvorrichtung für ein biegeelastisches stützelement einer rückenlehne - Google Patents
Verstellvorrichtung für ein biegeelastisches stützelement einer rückenlehne Download PDFInfo
- Publication number
- WO1995000053A1 WO1995000053A1 PCT/EP1994/001963 EP9401963W WO9500053A1 WO 1995000053 A1 WO1995000053 A1 WO 1995000053A1 EP 9401963 W EP9401963 W EP 9401963W WO 9500053 A1 WO9500053 A1 WO 9500053A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spring
- support element
- curvature
- force transmission
- transmission part
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/64—Back-rests or cushions
- B60N2/66—Lumbar supports
- B60N2/667—Lumbar supports having flexible support member bowed by applied forces
- B60N2/6673—Lumbar supports having flexible support member bowed by applied forces with motor driven adjustments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/64—Back-rests or cushions
- B60N2/66—Lumbar supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/64—Back-rests or cushions
- B60N2/66—Lumbar supports
- B60N2/667—Lumbar supports having flexible support member bowed by applied forces
- B60N2/6671—Lumbar supports having flexible support member bowed by applied forces with cable actuators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
- Y10T74/20408—Constant tension sustaining
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
- Y10T74/20462—Specific cable connector or guide
Definitions
- the support element consists of two parallel longitudinal strips which are firmly connected to one another by a plurality of transverse strips.
- Another sheet metal strip is attached to the top end of the supporting transverse element in the middle of the longitudinal strips, but is not connected to the other subsequent transverse strips but to the cam of an eccentric device which is arranged at the lower end of the supporting element.
- the eccentric and thus the cam can be adjusted via a worm gear by means of an actuating device provided with a handle in such a way that the central metal strip causes a curvature or a flattening (relaxation) of the support element, depending on the direction of rotation, whereby the setting of the desired curvature strength is audible.
- a spring is attached to the upper and lower end, which pulls the two ends of the slightly arched support element against one another, which supports the adjustment in the direction of a stronger curvature and is thus facilitated.
- the spring constantly acts on the support element, even if there is no adjustment, and is therefore independent of the actuating device.
- the object of the invention is to improve the device of the type mentioned in such a way that with a simple structure, an easy adjustment of the curvature is possible and / or that the clamping force of the respective curvature setting can be adjusted more flexibly, the curvature also being flexible.
- the adjusting force can be varied by the spring, and a certain elasticity of the support element is ensured, i.e. it is not rigid and can avoid stronger forces, which increases comfort.
- the adjustment forces for the curvature of the support element can be compensated by the choice of the spring strength in any measure - practically also completely - so that the curvature can be adjusted almost without effort.
- the solution according to claim 4 combines the advantages of the individual solutions according to claim 2 and claim 3.
- La, b a backrest with a Bowden cable arrangement for the movement adjustment of a support element in a top view and in a side view
- 2a, b a backrest with an eccentric arrangement for the curvature adjustment of a support element in plan view and in side view
- Fig. 3a, b a backrest with drawstrings
- the backrest shown in FIGS. 1 to 4 has a frame 1, in which a guide consisting of two parallel rods 3 is fastened between two cross struts 2 for a flexural elastic support element 4 arranged up and down thereon.
- the plate 1 consists of a one-piece, slightly curved plate 5, the upper end of which is connected to sliding elements 6 arranged on the rods 3.
- the plate 5 has an upper plate part 5a for supporting the lumbar vertebrae, and a lower part 5b for supporting the pelvis and pelvic vertebrae. Between the parts 5a and 5b, a link 7 is articulated on the back of the plate 5, the free end of which is articulated to a guide 8 arranged on the rods 3.
- the backrest has a device for adjusting the curvature and a device for adjusting the height of the support element 4.
- the device for height adjustment has an axle 9 mounted on one or both sides in the side rails of the frame 1, which in the case of one-sided mounting can also be additionally mounted on one or both rods 3.
- the axis 9 is led out of the frame i on one side and at the free end with a handwheel 10 one
- the tapes 11, 12 are attached to or wound on the axis 9 in such a way that when the axle 9 is rotated by means of the handwheel 10, the one tape 11, 12 is wound up and the other tape 12, 11 is unwound so that the entire support element 4 can move up and down on the bars 3.
- the device for adjusting the curvature of the support element 4 according to FIG. 1 has a Bowden cable arrangement 13.
- the outer sleeve 14 of the Bowden cable arrangement 13 is fixed on the one hand centrally at the upper end of the support element 4 and on the other hand on a holder 15 of an actuating device 16 fastened to the frame 1 coaxially to the axis 9.
- a disc-shaped drum 17 is rotatably arranged in the holder 15 and is coupled to a lever 18 outside the frame 1 by means of a sleeve arranged on the axis 9.
- the cable 19 of the Bowden cable arrangement 13 is fastened on the one hand to the lower end of the link 7 by means of an interposed helical spring 20.
- the other end of the cable pull 19 led out of the outer sleeve 14 is guided around the rotatable drum 17, its free end being connected to a second helical spring 21 in such a way that the cable end is loaded under tension.
- the cable 19 is guided non-slip around the drum 17, for which purpose the drum has at least one recess Receiving at least one projection fixedly arranged on the cable 19 (not shown).
- the path of movement of the cable 19 between a zero position and the maximum desired curvature is limited, which in any way, for. B. can be done by two stops, the z. B. with the drum 17 or the lever 18, limiting their path of movement, can cooperate (not shown). Due to the stops or the limited defined path of movement, overstressing, possibly even destruction, is prevented by uncontrolled expenditure of force when adjusting.
- the support element 4 consists of a single plate with a plurality of lateral incisions 30 made in the lower region, which delimit projections 31 in the lower region.
- these projections 31 emerge from the flatness of the support element 4, as can be seen from FIG. 2b, and serve to support the pelvic vertebrae.
- an axis 9 is also provided, which carries a disc 32 in the area between the bars 3, which is firmly connected to the axis 9.
- the support element 4 is articulated at its lower end to lower cross struts 2.
- a pull rod 33 or 34 is hooked in, which is hooked in at diametrically opposite locations on the edge of the disk 32 are.
- a spring 35 is interposed in one of the tie rods 33 or 34, here in the upper tie rod 34.
- a second disk 36 is arranged on the axis 9, on which one end of a rope 37 is fastened in a manner that can be wound up or unwound, the free end of which is fastened to the frame 1 by the engagement of a tension spring 38.
- the support element 4 has the embodiment set out in the description of FIG. 1. 3 also shows only one device for adjusting the curvature.
- FIG. 3 has the same design according to the exemplary embodiment described in FIG. 2, with the difference that instead of an eccentric arrangement with the disk 32 and the tie rods 33, 34 here the upper and lower ends of the support element 4 are joined together by a band 40 are connected, which can move freely through the axis 9 or can also be connected to it.
- a Bowden cable arrangement 13 is used for both height and curvature adjustment of the support element 4, with between the lower end of the support element consisting here of a metal grid 4 and the lower cross strut 2, a return spring 41 is arranged, which pulls the support element 4 against the lower cross strut 2.
- the device for bulging adjustment has the structure described in FIG. 1 with the difference that the outer sleeve 14 of the Bowden cable arrangement 13 is not fixed to the upper end of the support element 4 but to the free end of an extension 42 fastened there and that instead of a manual adjustment, a gear 43 is provided with an electric motor 44.
- a gear 43 with an electric motor 44 is also provided for height adjustment.
- At least all devices with manual adjustment are preferably each equipped with a known freewheel brake 39 (Fig. 1 to 3) provided, which prevents self-adjustment of the arch and / or height adjustment, but on the other hand does not hinder a desired adjustment by means of the handwheel 10 or the lever 18.
- the support element 4 according to FIGS. 1 to 3 preferably consists of a plastic, which gives the advantage of simple and inexpensive manufacture with low weight, even if reinforcements, such as ribs or thickenings, are provided, since these are cast or deformed are easy to manufacture in molds.
- 1 and 3 are preferably made of two parts, the actual support element 4 and the handlebar 7 so that they can be used without tools, e.g. B. by inserting axial projections into - a certain rotation - enabling bearing v / earth. In the case of the support elements 4 according to FIG. 2, these can also be punched out of a plastic plate.
- the latching device By releasing the lever 18 from its rest position, the latching device can be any known one, for example also a freewheel brake 39, the drum 17 is rotated by a pivoting movement of the lever 18 about the axis 9, the latter pulling the cable 19 in accordance with the direction of rotation Bowden cable arrangement 13 wound up or unwound.
- the tensile force of the spring 21 supports the rotary movement for the curvature of the support element 4, so that the force to be used for the curvature is thereby reduced and this is facilitated.
- the flexible support element 4 relaxes and thus counteracts the tensioning force of the spring 21, so that there is also a slight adjustment.
- the curvature set is no longer rigid as in the known solutions, but by the spring 20, the support element 4 can yield resiliently to a greater pressure and the entire backrest this makes their characteristics softer and more comfortable. If the increased pressure is released, the spring 20 contracts again and the previously set curvature is restored.
- the device for adjusting the curvature shown in FIG. 2 works similarly to that described in FIG. 1, with a rotary movement of the axis 9 by the handwheel 10 after it has been released from its latched position, a movement of the adjacent ends of the pull rods 33 or 34 causes the height 32 in the disk 32 relatively to one another or away from one another, as a result of which the arching or relaxation of the support element 4 takes place.
- the spring 38 which is coupled to the cable 37 and the second disk 36, is used in such a way that it supports the force to be exerted on the handwheel 10 for arching the support element 4, i.e. that the effort to adjust the curvature is also reduced.
- FIG. 3 works analogously to that shown in FIG. 2, with the band 40 being wound onto the axis 9 in order to achieve the curvature when the axis 9 is rotated, this force also being exerted by the spring 38 also present here their spring action is reduced.
- Gearboxes 43 are provided. The function of these designs is the same as that described for FIG. 1, with the difference that instead of the rotary movement by means of the handwheel 10 or the lever 18, this is done by the electric reversing motors 44.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU70719/94A AU7071994A (en) | 1993-06-17 | 1994-06-16 | Device for adjusting a flexible supporting element of a back-rest |
DE59402161T DE59402161D1 (de) | 1993-06-17 | 1994-06-16 | Verstellvorrichtung für ein biegeelastisches stützelement einer rückenlehne |
US08/564,342 US5913569A (en) | 1993-06-17 | 1994-06-16 | Adjustment apparatus for a flexible support element of a back rest |
EP94919636A EP0702522B1 (de) | 1993-06-17 | 1994-06-16 | Verstellvorrichtung für ein biegeelastisches stützelement einer rückenlehne |
JP50241895A JP3708959B2 (ja) | 1993-06-17 | 1994-06-16 | 背もたれの撓み弾性的な支持エレメントに用いられる調節装置 |
US10/122,254 US6623076B2 (en) | 1993-06-17 | 2002-04-12 | Adjustment apparatus for a resiliently flexible support element of a back rest |
US10/667,565 US6883867B2 (en) | 1993-06-17 | 2003-09-22 | Device for adjusting a flexible support element of a backrest |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4320105A DE4320105C1 (de) | 1993-06-17 | 1993-06-17 | Verstellvorrichtung für ein biegeelastisches Stützelement einer Rückenlehne |
DEP4320105.9 | 1993-06-17 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/300,061 Continuation US6447061B1 (en) | 1993-06-17 | 1999-04-27 | Adjustment apparatus for a resiliently flexible support element of a back rest |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995000053A1 true WO1995000053A1 (de) | 1995-01-05 |
Family
ID=6490560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/001963 WO1995000053A1 (de) | 1993-06-17 | 1994-06-16 | Verstellvorrichtung für ein biegeelastisches stützelement einer rückenlehne |
Country Status (8)
Country | Link |
---|---|
US (4) | US5913569A (de) |
EP (1) | EP0702522B1 (de) |
JP (1) | JP3708959B2 (de) |
AU (1) | AU7071994A (de) |
CA (1) | CA2165436A1 (de) |
DE (2) | DE4320105C1 (de) |
WO (1) | WO1995000053A1 (de) |
ZA (1) | ZA944274B (de) |
Cited By (8)
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---|---|---|---|---|
US5934752A (en) * | 1994-12-15 | 1999-08-10 | Ameu Management Corp. | Resilient curve element of plastics material with longitudinal and transverse struts for a lordosis support with adjustable curvature |
US5954399A (en) * | 1998-07-15 | 1999-09-21 | Hong; Jung-Myung | Lumbar support for a car seat |
AT406221B (de) * | 1998-06-16 | 2000-03-27 | Knud Dr Klingler | Wölbungsverstellbare stütze, insbesondere lordosenstütze, für sitze und liegen aller art |
US6053064A (en) * | 1998-05-01 | 2000-04-25 | L & P Property Management Company | Lumbar support screw actuator |
KR20010071606A (ko) * | 1998-06-30 | 2001-07-28 | 추후 | 요추 지지대용 케이블 고정구 |
WO2002001988A3 (en) * | 2000-06-30 | 2002-06-06 | L & P Property Management Co | Lumbar support device |
KR100494550B1 (ko) * | 2002-11-15 | 2005-06-13 | 현대자동차주식회사 | 자동차용 럼버서포트 장치 연동형 등판 지지구조 |
US8201886B2 (en) * | 2005-06-16 | 2012-06-19 | Schukra Geraetebau Gmbh | Lumbar support |
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AT394829B (de) | 1989-08-04 | 1992-06-25 | Schuster Wilhelm | Rueckenlehne fuer einen fahrzeugsitz, mit einer verstellbaren lendenstuetze |
DE4320105C1 (de) * | 1993-06-17 | 1994-10-13 | Ameu Management Corp | Verstellvorrichtung für ein biegeelastisches Stützelement einer Rückenlehne |
US5505520A (en) * | 1994-11-03 | 1996-04-09 | Ford Motor Company | Passenger seat with adjustable lumbar support |
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DE10154186C1 (de) * | 2001-11-05 | 2003-06-12 | Schukra Europa Gmbh | Vorrichtung zur Verstellung einer Sitzkomponente |
US6676214B2 (en) | 2001-11-16 | 2004-01-13 | L & P Property Management Company | Method and apparatus for lumbar support with integrated actuator housing |
US6652029B2 (en) | 2001-12-20 | 2003-11-25 | L & P Property Management Company | Unitized back plate and lumbar support |
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US5934752A (en) * | 1994-12-15 | 1999-08-10 | Ameu Management Corp. | Resilient curve element of plastics material with longitudinal and transverse struts for a lordosis support with adjustable curvature |
US6053064A (en) * | 1998-05-01 | 2000-04-25 | L & P Property Management Company | Lumbar support screw actuator |
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US5954399A (en) * | 1998-07-15 | 1999-09-21 | Hong; Jung-Myung | Lumbar support for a car seat |
WO2002001988A3 (en) * | 2000-06-30 | 2002-06-06 | L & P Property Management Co | Lumbar support device |
KR100494550B1 (ko) * | 2002-11-15 | 2005-06-13 | 현대자동차주식회사 | 자동차용 럼버서포트 장치 연동형 등판 지지구조 |
US8201886B2 (en) * | 2005-06-16 | 2012-06-19 | Schukra Geraetebau Gmbh | Lumbar support |
Also Published As
Publication number | Publication date |
---|---|
JP3708959B2 (ja) | 2005-10-19 |
EP0702522B1 (de) | 1997-03-19 |
US6623076B2 (en) | 2003-09-23 |
DE4320105C1 (de) | 1994-10-13 |
JPH08511457A (ja) | 1996-12-03 |
DE59402161D1 (de) | 1997-04-24 |
EP0702522A1 (de) | 1996-03-27 |
US20040075320A1 (en) | 2004-04-22 |
US6883867B2 (en) | 2005-04-26 |
ZA944274B (en) | 1995-02-10 |
US20020109383A1 (en) | 2002-08-15 |
US6447061B1 (en) | 2002-09-10 |
AU7071994A (en) | 1995-01-17 |
US5913569A (en) | 1999-06-22 |
CA2165436A1 (en) | 1994-12-18 |
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