GB2106778A - Height-adjustment arrangement for seat, particularly motor vehicle seat - Google Patents

Height-adjustment arrangement for seat, particularly motor vehicle seat Download PDF

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Publication number
GB2106778A
GB2106778A GB08221634A GB8221634A GB2106778A GB 2106778 A GB2106778 A GB 2106778A GB 08221634 A GB08221634 A GB 08221634A GB 8221634 A GB8221634 A GB 8221634A GB 2106778 A GB2106778 A GB 2106778A
Authority
GB
United Kingdom
Prior art keywords
rocker
seat
arrangement
adjusting
height
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08221634A
Other versions
GB2106778B (en
Inventor
Heinz P Cremer
Friedrich Heise
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Keiper Automobiltechnik GmbH and Co KG
Original Assignee
Keiper Automobiltechnik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Keiper Automobiltechnik GmbH and Co KG filed Critical Keiper Automobiltechnik GmbH and Co KG
Publication of GB2106778A publication Critical patent/GB2106778A/en
Application granted granted Critical
Publication of GB2106778B publication Critical patent/GB2106778B/en
Expired legal-status Critical Current

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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1605—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
    • B60N2/161—Rods
    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
    • B60N2/164—Linear actuator, e.g. screw mechanism
    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
    • B60N2/1665—Hydraulic or pneumatic actuation
    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
    • B60N2/1803—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other with independent front and/or rear adjustment
    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
    • B60N2/185—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the drive mechanism
    • B60N2/1878—Hydraulic or pneumatic actuation

Abstract

A height-adjustment arrangement for a seat, particularly for a motor vehicle seat, has two pairs of links (14, 22) connected in pairs by rocker shafts (13, 21) and each located in the respective corner of a seat, two pairs of brackets (10, 11) each supporting a respective one of the rocker shafts, and an adjusting device operative for raising and lowering a seat part relative to a vehicle floor by rotation of one of the pairs of links about the axis of the corresponding rocker shaft and including at least one linearly extendable adjusting element (32) one end of which is coupled with a rocker lever (30) or (5) fixedly connected with one rocker shaft (13) or (21) and the other end of which is rotatably connected with the other of the rocker shafts (21) or (13) respectively. Preferably two such adjusting elements are provided. <IMAGE>

Description

SPECIFICATION Height-adjustment arrangement for seat, particularly motor vehicle seat The present invention relates to a height-adjustment arrangement for a seat, particularly for a motor vehicle seat. Height-adjustment arrangements of this general type are known in the art. In a known height-adjustment arrangement, a seat part is raisable and lowerable relative to a vehicle floor by adjusting means associated with rotary shafts, via rotatable supporting members which are arranged at seat corners and connected with another in pairs by the rotary shafts. The rotary shafts are supported in brackets which are arranged at a fixed height relative to the vehicle floor or guiding rail means provided on the vehicle floor. Such a known device is disclosed, for example, in U.S. Patent 4,015,812.In this arrangement, the brackets are arranged on guiding rails for longitudinal displacement of the seat, and each pair of brackets is located in a front or rear seat region. Two oppositely arranged brackets of each pair support a respective one of the rotary shafts, and the rotatable supporting members are fixedly connected with both end regions of the rotary shafts. The free ends of the rotatable supporting members are rotatably coupled with supports of the seat. Each of the rotary shafts is angularly displaceable by a motor-driven adjusting device, so that the front and/or rear seat region is raised or lowered via the rotatable supporting members connected with the rotary shafts. The adjusting devices are composed of drive screw units with threaded spindles displaceable via a worm transmission.Both an adjusting motor and the adjusting devices are mounted on tracks connected with the guiding rails and arranged under and between the support of the seats. The arrangement and holding of the adjusting devices on special tracks is relatively expensive and also requires a considerable amount of space.
Moreover, the actuating elements, such as the adjusting motor and in some cases a manually actuable adjusting member, are fixedly associated with the adjusting devices, so that further space is required in certain positions.
Accordingly, it is an aim of the present invention to provide a height-adjustment arrangement for a seat, particularly for a motor vehicle seat, which avoids or at least reduces the disadvantages of the prior art.
More particularly, it is an aim of the present invention to provide a height-adjustment arrange mentor a seat, particularly a motor vehicle seat, which requires a simpler, spatially less adjusting means of fewer parts than known height-adjustment arrangements, and in which actuating elements for the adjusting means can be arranged, independently of the location of the adjusting means, either at the seat or at its carrying means.
According to the present invention there is provided a height-adjustment arrangement for a seat, particularly for a motor vehicle seat, comprising rocket supporting members arranged at each corner of the seat and connected together in pairs by respective rocker shafts journalled in brackets arranged at a fixed height relative to the floor of the vehicle, and adjusting means for raising and lowering the seat relative to the vehicle floor via said rocker, said adjusting means including at least one linearly extendible adjusting element having two ends one of which is pivotallyjournalled on one of the rocker shafts while its other end is coupled to a rocker lever rotatably connected with the other of said rocker shafts.
When the arrangment is designed in accordance with the present invention, it is possible to dispense with brackets, abutments, holding or supporting blocks, and the like, for one-sided fixing of the adjusting element, because one of the rotary shafts, which is in any case already present, serves as an abutment at one of the sides of the adjusting element. A space-consuming opposed abutment is thus dispensed with, and it is possible to provide for a compact seat unit with simple and economical means, with only a small space being required under the seat. The arrangement of the actuating elements thus becomes more flexible and it is easier to arrange adjusting motors or manually actuating adjusting members at suitable locating of the seat part frame, on an intermediate floor bracket or the like, and to connect the same via movable members with the adjusting elements.The linearly extendable adjusting elements can be formed as fluid pressure operated cylinder-and-piston units, electromechanical or mechanical displacing elements.
In accordance with another advantageous feature of the present invention, the arrangement has two adjusting elements which are rotatably supported on opposed rocker shafts and coupled with rocker levers of the opposite rocker shaft. For raising only the front or rear seat region, it is sufficient to provide only one adjusting element. When two adjusting elements are provided in accordance with the abovementioned feature of the present invention, it is possible to raise or lower the front seat region and the rear seat region, or both seat regions simultaneously or after one another.
Still another preferred feature of the present invention is that the adjusting elements are associated with intermediate spacer members so as to correspond to the distance between the rocker shafts and the supporting members. This allows utilization of any linearly extendable adjusting element regardless of the length of the adjusting elements.
A further advantageous feature of the present invention is that a respective compensation plate is provided between pairs of supporting members connected with, for example, the rear region of the seat part. Such construction provides for compensation for length differences between the coupling points on the seat part of seat support, required because of the extent of pivotal movement.
Still a further preferred feature of the present invention is that the adjusting elements are associated with abutment members which co-operate with the vehicle floor or guiding rail means arranged thereon. This eliminates overloading of the adjusting elements because of travel impacts or shocks.
The invention is described, purely by way of example, with reference to the accompanying draw ings, wherein: Figure lisa side view of a height-adjustment arrangement in accordance with the present invention, in a lowered position and in a section taken along the line I-I of Figure 3; Figure 2 is a view substantially corresponding to the view of Figure 1 but showing the heightadjustment arrangement in a raised position; and Figure 3 is a plan view of the height-adjustment arrangement of Figure 1.
A height-adjustment mechanism in accordance with the present invention is utilized for a seat of a vehicle which has a vehicle floor shown in chain lines in Figure 1. Two conventional guiding rail arrangements are mounted on the vehicle body parallel to and at a distance from one another.
Brackets 10 and 11 are mounted on longitudinally displaceable rails of the guiding rail arrangements, in each corner region of a seat and arranged in two pairs. The brackets 10 and 11 are angled or L-shaped in cross-section.
Bearing bushes 12 receive a rocker shaft 13 the two end regions of which extend outwardly beyond the bearing bushes at each longitudinal side of the seat. Rocker supporting members 14 are fitted on these end regions and fixedly connected with the rocker shaft 13, for example by welding. A rocker lever 15 is arranged, for example, in a cenral region adjacent to one longitudinal side of the seat and connected with the rocker shaft 13, for example also by welding. A free end of each of the two rocker supporting members 14 is linked to a support bearing 16 by a flange pin 17 riveted to the supporting bearing 16. The support bearings 16 are of angled cross-section. Each supporting bearing has a registry bolt 19 and a mounting hole 20 for screwing with a seat part frame 18.
In the rear seat region, a rocker shaft 21 is angularly displaceably supported in vertically extending angled shanks of the brackets 11 mounted on the rails of the guiding rail units. Each of the ends of the rocker shafts 21 is in turn fixedly connected with a rocker supporting member 22, for example by welding. A pivot pin 24 engaging in a bush 23 located at each end of the tubular rocker shaft 21 is connected for rotation together with the bush via a pin 25 with the rocker shaft 21. Forjournalling the rocker shaft 21 in the vertical shanks of the brackets 11 of angled cross-section connected with the rails of the guiding rail means, a head 26 of the pivot pin 24 fixed in the rocker shaft extends axially beyond the rocker shaft in axial direction and engaged in a bearing recess of the brackets 11.
The free end of each rocker supporting element 22 is connected for rotation with a compensation plate 27 via a head bolt 28. The compensation plates 27 are in turn coupled via further head bolts 28 with respective supporting bearing 29 which are connectable with the seat frame. For mounting on a seat part frame the supporting bearings 29 also have registry pins 19, on the one hand, and a mounting hole 20 for screwing on the seat part frame 18, on the other hand. The rocker shaft 21 is fixedly connected with a rocker lever 30, for example by welding. The rocker lever 20 is offset relative to the rocker lever 15, as seen in the longitudinal direction of the seat.
A linearly extendable push rod 31 of an adjusting element 32 is turnably coupled with the free end of the rocker lever 15. Afoot of the adjusting element 32 is inserted in a tubular spacer member 33 and fixedly connected with the latter. While only one end of the spacer member 33 is connected with the adjusting element 32, the other end of the spacer member 33 has an ear 34 which is rotatably journalled on the rocker shaft 21. The rocking lever 30 rotatably connected with the rocker shaft 21 is rotatably connected with a push rod 31 of a second adjusting element 32. Via its foot, a second adjusting element is rotatably supported on the rocker shaft 13 with a further spacer member 33' which has an ear 34'.As can be seen particularly from Figures 1 and 2, the two adjusting elements 33 are underpinned by abutment members 35 connected with the guiding rail arrangement so that the adjusting members can bear against the abutment members 35.
As already mentioned above, the linearly extendable adjusting elements 32 may be formed as cylinder-and-piston units which are actuated pneumatically or hydraulically. It is, however, also possible to use adjusting elements which have a threaded nut formed as a worm gear and arranged in a housing rotatably but axially undisplaceably and a spindle surrounded by the threaded nut so that during rotation of the threaded nut in the housing the adjusting element is extended from or retracted into the housing of the adjusting element.
Figure 1 shows the seat in the lowered position.
When the adjusting element 32 connected with the rocker lever 15 is retracted, the rocker lever 15 turns in a counterclockwise direction to a position shown in Figure 2. Because of the rotation of the rocker shaft 13, the rocker supporting member 14 and the supporting part 16 together therewith rise to a position shown in Figure 2. The seat part frame 18 and thereby the entire seat assumes a rearwardly inclined position, so that the front seat region is raised relative to the rear seat region.By actuation of the adjusting element 32 connected with the rocker lever 30 in the direction of extension, the rocker lever 30 turns in a counterclockwise direction so that the supporting member 22 is also turned via the rocker shaft 21 in the corresponding direction and assumes a position shown in Figure 2. Simultaneouslywith the angular displacement of the rocker supporting member 22, the opposite support bearings 29 are raised via the compensating plates 27 and brought to a position shown in Figure 2. Thereby the rear seat part is also raised, and the seat part frame 18 as well as the entire seat assumes a position shown in Figure 2.
It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of constructions differing from the types described above.
While the invention has been illustrated and described as embodied in a height-adjustment arrangement for a seat, particularly a vehicle seat, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the scope of the present invention.
Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.
What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims.

Claims (7)

1. A height adjusting arrangement for a seat, particularly for a motor vehicle seat, comprising rocker supporting members arranged at each corner of the seat and connected together in pairs by respective rocker shafts journalled in brackets arranged at a fixed height relative to the floor of the vehicle, and adjusting means for raising and lowering the seat relative to the vehicle floor via said rocker, said adjusting means including at least one linearly extendible adjusting element having two ends one ofwhich is pivotallyjournalled on one of the rocker shafts while its other end is coupled to a rocker lever rotatably connected with the other of said rocker shafts.
2. An arrangement as claimed in claim 1, wherein a second rocker is fixedly connected with said other rocker shaft, said adjusting means including a second linearly extendible adjusting element which is coupled with said second rocker lever and is rotatably connected with said one rocker shaft.
3. An arrangement as claimed in claim 1 or 2, wherein said adjusting element(s) can be matched to the spacing between the rocker shafts and the rocker lever(s) by means of interposed spacing members.
4. An arrangement as claimed in any preceding claim, wherein a respective compensating plate is interposed between one of the pairs of rocker supporting parts connected for rotation with one of the rocker shafts and the supporting bearings connected with a part - preferably a rear part - of the seat.
5. An arrangement as claimed in any preceding claim, wherein abutment member(s) is or are arranged to co-operate with the vehicle floor or with a guide rail arrangement fixed to the floor, said extendible adjusting element(s) being associated with said abutment member(s).
6. An arrangement according to claim 1, substantially as herein described with reference to and as shown in the accompanying drawings.
7. A vehicle seat including a seat height adjusting arrangement as claimed in any preceding claim.
GB08221634A 1981-07-31 1982-07-27 Height-adjustment arrangement for seat, particularly motor vehicle seat Expired GB2106778B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813130280 DE3130280A1 (en) 1981-07-31 1981-07-31 HEIGHT ADJUSTMENT FOR SEATS, IN PARTICULAR MOTOR VEHICLE SEATS

Publications (2)

Publication Number Publication Date
GB2106778A true GB2106778A (en) 1983-04-20
GB2106778B GB2106778B (en) 1985-01-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB08221634A Expired GB2106778B (en) 1981-07-31 1982-07-27 Height-adjustment arrangement for seat, particularly motor vehicle seat

Country Status (2)

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DE (1) DE3130280A1 (en)
GB (1) GB2106778B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213370A (en) * 1987-12-14 1989-08-16 Porter Co P L Seat position adjustment mechanism
GB2298786A (en) * 1995-03-13 1996-09-18 Ikeda Bussan Co Vehicle seat adjuster
US8764111B2 (en) 2009-06-20 2014-07-01 Daimler Ag Height adjustment device for a vehicle seat

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ234471A (en) * 1990-07-12 1994-01-26 Giles Barry David T A Saltwate Elevatable armchair: uprights of inner frame pivotally linked to upright
DE4302329B4 (en) * 1993-01-28 2005-08-04 Keiper Gmbh & Co. Kg Height adjustment device for seats, in particular motor vehicle seats
DE10226733B4 (en) * 2002-06-14 2007-05-24 Faurecia Autositze Gmbh Holder for a seat part of a vehicle seat
DE202013100495U1 (en) * 2013-02-04 2014-05-06 Westfalia Presstechnik Gmbh & Co. Kg Adjustable vehicle seat

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3765720A (en) * 1971-07-02 1973-10-16 Nissan Motor Position adjustable support mechanism
DE2901208C2 (en) * 1979-01-13 1984-08-09 Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid Adjustable seat, especially vehicle seat
DE2951244A1 (en) * 1979-12-19 1981-07-23 Heinz 8770 Lohr Paulisch Reclining seat with fixed back rest - supported on pairs of pivoted arms with different forward inclination and adjustable air spring

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213370A (en) * 1987-12-14 1989-08-16 Porter Co P L Seat position adjustment mechanism
GB2213370B (en) * 1987-12-14 1991-11-20 Porter Co P L Adjustable seat support mechanism
GB2298786A (en) * 1995-03-13 1996-09-18 Ikeda Bussan Co Vehicle seat adjuster
GB2298786B (en) * 1995-03-13 1997-04-23 Ikeda Bussan Co Vehicle seat adjuster
US5806824A (en) * 1995-03-13 1998-09-15 Ikeda Bussan Co., Ltd. Vehicle seat adjuster
US8764111B2 (en) 2009-06-20 2014-07-01 Daimler Ag Height adjustment device for a vehicle seat

Also Published As

Publication number Publication date
GB2106778B (en) 1985-01-09
DE3130280A1 (en) 1983-02-17

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Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920727