GB2065464A - A seat adjustable by a motor, particularly a vehicle seat - Google Patents

A seat adjustable by a motor, particularly a vehicle seat Download PDF

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Publication number
GB2065464A
GB2065464A GB8039399A GB8039399A GB2065464A GB 2065464 A GB2065464 A GB 2065464A GB 8039399 A GB8039399 A GB 8039399A GB 8039399 A GB8039399 A GB 8039399A GB 2065464 A GB2065464 A GB 2065464A
Authority
GB
United Kingdom
Prior art keywords
seat
gear
component carrier
seat component
inclination
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
GB8039399A
Other versions
GB2065464B (en
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 GB2065464A publication Critical patent/GB2065464A/en
Application granted granted Critical
Publication of GB2065464B publication Critical patent/GB2065464B/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
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/02246—Electric motors therefor
    • 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
    • B60N2/1615—Parallelogram-like structure
    • 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
    • B60N2/165—Gear wheel driven 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
    • B60N2/1695—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 with simultaneous height and inclination 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
    • B60N2/1807—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 cinematic
    • B60N2/181—Rods
    • B60N2/1814—Parallelogram-like structure
    • 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
    • B60N2/1807—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 cinematic
    • B60N2/1846—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 cinematic pivoting about a distant axis, e.g. virtual
    • 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
    • B60N2/1864—Gear wheel driven mechanism

Abstract

A vehicle seat wherein a seat base can be adjusted in height and inclination by gear members (24, 25, 26, 27) driven by an electric motor. Toothed segments (18) driven by pinions (20) connected to gear segments (27) move pivoted supports (17) pivotably mounted between a seat component carrier (12) and a rail (14), the gear segment (27) having spaced cams (33) co-operating with a fixed stop (34) to set limits of inclination. A buffer (35, 36) located between the component carrier (12) and the rail (14) cushions the lower limit position. <IMAGE>

Description

SPECIFICATION A seat adjustable by a motor particularly a vehicle seat The invention relates to a seat adjustable by a motor and has particular though not exclusive application to a seat for a vehicle.
Such a seat may have a seat component which is longitudinally displaceable on a rail arrangement and can be adjusted in height and inclination by gear members driven by the motor and including toothed segments for moving pivoting supports which are disposed between a seat component carrier and seat rails, limit positions of inclination of the seat component being defined by a stationary stop which limits the movement of at least one of the gear members.
In a previously proposed vehicle seat of the above mentioned kind, one of the gear components associated with the motor, such as a cog wheel in engagement with a motor pinion, has an entraining cam. This can entrain at least one loosely rotatable drag disc provided with a cam. In the limit position of rotation the cam on the drag disc comes into contact with a fixed abutment cam for limiting the rotary movement. It has also been proposed to have a plur alityofdrag discs which are loosely rotatable and disposed one behind the other in an axial direction, each disc having a cam on one side, which can be brought into contact with the periphery of the next disc, the cam on the disc furthest away from the gear component being adapted to run up against the cam on a bearing wall receiving the gear components.As already mentioned, the drag discs are preferably disposed in the region of the gear component next to the drive motor, in order to minimise the blocking of the gear components by the tension inherent in the material. This is because the torque at the gear stage following the drive motor is still largely unaffected by the reduction ratio of the gear, and thus still has a relatively low value in this location. Where there is a relatively long adjusting distance, however, quite a large number of drag discs may be required. When the end position is reached the cam on the last disc strikes relatively hard against the stop cam, leading to shock loads in the whole gear. The shocks are particularly hard when the adjusting movement of the gear is aided by the weight of a person using the seat.Furthermore the drag discs, their entraining cams and the stationary stop cam need to be designed to withstand high loads resulting from the vehicle crashing.
According to the invention there is provided a seat adjustable by a motor in which a seat component is longitudinally displaceable on a rail arrangement and can be adjusted in height and inclination by gear members driven by the motor and including toothed segments for moving pivoting supports which are arranged pivotably between a seat component carrier and seat rails, limit positions of inclination of the seat component being defined by a stationary stop which limits the movement of at least one of the gear members, one of the toothed segments has two locking cams spaced apart to correspond to limit positions of inclination of the seat component and which alternatively come into contact with a stop on a gear box and at least one limit position of inclination is cushioned by a preceding buffer.
Thus the adjusting distance can be limited without special additional components of the adjusting gear, and blocking of the gear can be avoided by bracing the gear components against the stop.
The locking cams on the toothed segment, which limit the adjusting movement, are actual components of a gear member, so that no additional components are required to limit the adjusting movement. The use of an elastic buffer associated with the locking cam which limits the bottom inclined position makes it possible to cushion the end phase of the adjusting movement, which is influenced by the weight of the seat-user, thereby (a) avoiding undue abutment shock and (b) counteracting any bracing of the gear components.
For the purpose of adjusting the height of inclination of the seat component carrier, each pivoting support is preferably joined non-rotatably to a respective toothed segment forming the output member of the gear and, together with the toothed segment, is linked with the seat component carrier at the rear of the seat; and, at the front of the seat the carrier is supported on a fixed base, for example the floor of the vehicle, with a pivot joint by means of a coupling strap, while the supporting rails are fixed to the fixed base. The use of a coupling strap at the front of the seat enables the front part to make a corresponding movement when the rear part is raised or lowered.
In order that the stop can also be used to stabilise the gear box, it is preferably constructed as a bolt extending transversely through the gear box and interconnecting the side walls thereof. The elastic buffer, preferably made of a plastics or rubber, is fixed to the seat component carrier outside the gear, preferably independently of the stop formed by a bolt and independently of the locking cams in order to protect it from lubricants; and has a head located between the seat component carrier and the supporting rail.
Lifting of the seat component carrier as a result of a crash, with possible breakage of the locking cams, can be avoided by providing a crash stop on the carrier, in the region of the position at which the pivoting support is articulated thereto, to limit the pivoting movement of the support.
To increase the stability of the seat component carrier which preferably has an angle section, reinforcing ribs can be provided at least at its ends to brace the limbs of the angle section against one another.
The invention is diagrammatically illustrated by way of example in the accompanying drawings, in which: Figure lisa side view of a seat according to the invention, indicated in thin continuous lines, with a means for adjusting the height and inclination of the seat located between its rail arrangement and the floor of the vehicle; Figure 2 is a plan view of the adjusting means with the seat removed and the rail arrangement removed; Figure 3 is a vertical section taken on line Ill-Ill in Figure 2 and showing the supporting rail disposed at one longitudinal side of the seat, with the seat com ponent carrier articulated to it, the carrier being in the lowest inclined position and being provided with the adjustment mechanism;; Figure 4 is a vertical section taken on line Ill-Ill in Figure 2, showing the adjusting means of Figure 3 with the seat component carrier swung into the highest inclined position; Figure 5 shows the adjusting unit in a vertical section taken on line V-V in Figure 3; Figure 6 is a vertical section taken on line VI-VI in Figure 2, showing the supporting rail arranged at the opposite longitudinal side of the seat, with the seat component carrier connected to it, in the lowest inclined position; and Figure 7 is a vertical section through the supporting rail shown in Figure 6, with the seat component carrier connected to it and pivoted into the highest inclined position.
It should first be pointed out that the embodiment illustrated is a seat for a motor vehicle, since a seat with adjusting means is particularly advantageous in a motor vehicle. However, seats for other purposes may be constructed in accordance with the invention.
The seat illustrated in Figures 1 and 2 has a rail arrangement 11 at the underside of its base part 10, at each of the two longitudinal sides thereof, and a seat component carrier 12, 13 is mounted on each rail arrangement 11. Each carrier 12, 13 is of angle section and is connected to a respective supporting rail 14, 15 by coupling straps 16 at the front of the seat and by pivoting supports 17 at the rear.Each pivoting support 17 is non-rotatably connected to a toothed segment 18 which, together with the support 17, is supported pivotably on a common pin 19 disposed at the rear end of the seat component carrier 12, 13. The teeth on the segments 18 engage the teeth of a pinion 20, and one pinion 20 is mounted rotatably in the vertical limb of each of the carriers 12,13. On one longitudinal side of the seat the toothed pinion 20 is a component of a gear arrangement (seen particularly in Figures 3 to 5) which is accommodated in a dish-shaped gear box 21. A worm gear arrangement 22 of an electric motor 23 is joined by a flange to the gear box 21, and a pinion 24 which provides the secondary drive from the worm gear arrangement 22 forms the drive into the gear box 21.
The pinion 24 meshes with a cog wheel 25, which is non-rotatably connected to a second pinion 26 mounted co-axially in the gear box 21. The pinion 26 engages the teeth of a segment 27, which is in turn seated on the same shaft as and non-rotatably con nected to the pinion 20 engaged with the toothed segment 18. The pinion 20 projects from the gear box and is located at the opposite side of the vertical limb of the seat component carrier 12. The pinions 20, mounted at each longitudinal side of the carriers 12 and 13, are non-rotatably interconnected by a transmission shaft 28. On rotation of the motor pin ion 24 the cog wheel 25 meshing with it is also rotated and in turn rotates the pinion 26, non rotatably connected to it, in the same direction.The pinion 26, which is in engagement with the segment 27, turns the segment 27, thereby also turning the pinion 20 non-rotatably connected to the segment 27. The pinion 20 pivots the segment 18, meshing with it, about the joint pin 19, thereby also turning the pivoting support 17, which is non-rotatablycon- nected to the segment 18, about the common pin 19.
Since the support 17 bears with a swivel joint on a bearing bolt 29 fixed to the supporting rail 14, its pivoting movement causes the rear end of the seat component carrier 12 either two be raised or lowered, according to the rotary direction of the motor pinion 24. The seat carrier 12 can carry out a pivoting movement due to the coupling strap 16 pivoted to it, the strap 16 in turn being supported, together with the supporting rail 14, on a joint pin 30 which is stationary relative to the floor of the vehicle. Thus the front end of the seat component carrier is raised or lowered, dependent on the pivoting movement of the support 17 at the rear of the seat.
The pinion 20, together with the toothed segment 27, is mounted on an end of shaft 32, in the gear box 21 and in a bearing bracket 31, the bracket 31 being joined to the gear box and to the carrier 12. The transmission shaft 28 connects the pinion 20 nonrotatably to the pinion 20 mounted in the opposite carrier 13. Thus the rotary motion imparted to the gear arrangement by the motor 23 is transmitted to the two pinions 20, one at each longitudinal side of the seat. The toothed segments 18 and thus the pivoting supports 17 on both sides of the seat are thereby moved synchronously. The seat component carriers 12 and 13 are therefore raised and lowered simultaneously. The raising and lowering movement of the carriers 12 and 13 is limited by locking cams 33 disposed on the segment 27 at a side opposite its teeth.The cams 33 can come alternately into contact with a bolt 34 at the limit of the pivoting movement.
The bolt 34 extends through the gear box and forms a stop. The distance between the locking cams 33 is such that the toothed segment 27 can pivot the distance required for the intended lifting movement.
On both longitudinal sides of the seat the seat component carriers 12 and 13, mounted belowthe rail arrangement 11, each have a buffer 35 in the region of the pinion 20 and joined to the carrier 12 by a flange. The buffer 35 may be made of an elastic plastics material or rubber, with a head 36 located between the horizontal limb of each carrier 12, 13 and the top of the respective supporting rail 14, 15.
The buffer 35 cushions the descending movement of the seat component 10 during the last phase of the lowering movement, so that the locking cam 33 associated with the lowering movement strikes against the sto 34with only low kinetic energy.
The seat component carriers 12 and 13 are fixed in the raised position set for them by the self-locking action of the worm gear 22. In the event of the worm gear and locking cams 33 being broken in a crash, however, crash stops 37 are provided to prevent the carriers 12 and 13 holding the seat from being swung right up. A crash stop 37 is fixed to each of the carriers 12 and 13 in the region of the pivot formed by the common pin 19. The stops 37 project into the plane of the pivoting supports 17. If a crash should take place, therefore, the seat component carriers 12 and 13 will be lifted only a negligible distance above their raised position shown in Figures 4 and 7.
As can be seen particularly from Figure 2, the carriers 12 and 13 contain slots 38 in their end portions, for a screw connection to the rail arrangement 11. In order to prevent the carriers 12 and 13, which have an angle section, from being bent upwards or torn out in the fastening region of the rail arrangement 11 in the event of an accident, the end portions of the carriers 12 and 13 are reinforced, e.g. by having ribs 39 welded onto them.

Claims (7)

1. A seat adjustable by a motor in which a seat component is longitudinally displaceable on a rail arrangement and can be adjusted in height and inclination by gear members driven by the motor and including toothed segments for moving pivoting supports which are arranged pivotably between a seat component carrier and seat rails, limit positions of inclination of the seat component being defined by a stationary stop which limits the movement of at least one of the gear members, one of the toothed segments has two locking cams spaced apart to correspond to limit positions of inclination of the seat component and which alternately come into contact with a stop on a gear box and at least one limit position of inclination is cushioned by a preceding buffer.
2. A seat according to claim 1, in which each pivoting support is non-rotatably connected to a respective toothed segment forming the output member of the gear and, together with the toothed segment, is linked with the seat component carrier at the rear of the seat, and at the front of the seat the carrier is supported on a fixed base with a pivot joint, buy a coupling strap, whilethe supporting rails are secured to the fixed base.
3. A seat according to claim 1 or claim 2, in which the stop is in the form of a bolt which extends through the gear box and interconnects the side walls thereof.
4. A seat according to any one of the preceding claims, in which the buffer is fixed to the seat component carrier and has a head located between the carrier and the supporting rail.
5. A seat according to any one of the preceding claims, including a crash stop to limit the pivoting movement of the pivoting support and provided on the seat component carrier in the region of the position at which the pivoting support is articulated thereto.
6. A seat according to any one of the preceding claims, in which the seat component carrier, which has an angle section, is reinforced at least at its ends by ribs which brace the limbs of the angle section against one another.
7. A seat adjustable by a motor substantially as hereinbefore described and illustrated with reference to the accompanying drawings.
GB8039399A 1979-12-14 1980-12-09 Seat adjustable by a motor particularly a vehicle seat Expired GB2065464B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2950354A DE2950354C2 (en) 1979-12-14 1979-12-14 Motor-adjustable seat to be arranged in particular in a vehicle, preferably a motor vehicle

Publications (2)

Publication Number Publication Date
GB2065464A true GB2065464A (en) 1981-07-01
GB2065464B GB2065464B (en) 1983-12-21

Family

ID=6088493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8039399A Expired GB2065464B (en) 1979-12-14 1980-12-09 Seat adjustable by a motor particularly a vehicle seat

Country Status (2)

Country Link
DE (1) DE2950354C2 (en)
GB (1) GB2065464B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2783209A1 (en) * 1998-09-16 2000-03-17 Aisin Seiki Lifting mechanism for vehicle seat, comprises forward and rear cranks connected by link piece with spring rolled around axle holding ratchet in upward lifting direction
EP1531080A3 (en) * 2003-11-14 2008-05-21 Aisin Seiki Kabushiki Kaisha Seat device for vehicle
DE102009006387A1 (en) 2009-01-28 2010-07-29 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Device for the electrical adjustment of a vehicle seat
CN103112374A (en) * 2013-02-04 2013-05-22 孙文博 Automobile leveling seat
EP2554429A3 (en) * 2011-08-05 2013-10-16 Johnson Controls GmbH Vehicle seat with a seat angle adjustment device and method for operating a vehicle seat with a seat angle adjustment device
CN112638747A (en) * 2020-07-24 2021-04-09 华为技术有限公司 Steer-by-wire system and steering control method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3503897C2 (en) * 1985-02-06 1996-10-24 Teves Gmbh Alfred Motor-adjustable seat, especially for motor vehicles
DE4008662C2 (en) * 1990-03-09 1998-11-05 Hammerstein Gmbh C Rob Vehicle seat with a seat support to which a backrest is attached and a seat cushion
DE4217123C2 (en) * 1992-05-23 1994-05-26 Keiper Recaro Gmbh Co Backrest for vehicle seats, in particular motor vehicle seats

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1039568A (en) 1950-11-27 1953-10-08 Million Guiet Tubauto Adjustable seat for vehicles
DE2851530A1 (en) 1978-11-29 1980-06-12 Keiper Automobiltechnik Gmbh Vehicle seat power adjustment system - has two motors, cam and traction disc together with stops to define setting movement

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2783209A1 (en) * 1998-09-16 2000-03-17 Aisin Seiki Lifting mechanism for vehicle seat, comprises forward and rear cranks connected by link piece with spring rolled around axle holding ratchet in upward lifting direction
US6290198B1 (en) 1998-09-16 2001-09-18 Aisin Seiki Kabushiki Kaisha Seat lifter device for a vehicle
EP1531080A3 (en) * 2003-11-14 2008-05-21 Aisin Seiki Kabushiki Kaisha Seat device for vehicle
DE102009006387A1 (en) 2009-01-28 2010-07-29 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Device for the electrical adjustment of a vehicle seat
US8240766B2 (en) 2009-01-28 2012-08-14 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Device for electrically adjusting a vehicle seat
DE102009006387B4 (en) 2009-01-28 2020-01-09 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Device for the electrical adjustment of a vehicle seat
EP2554429A3 (en) * 2011-08-05 2013-10-16 Johnson Controls GmbH Vehicle seat with a seat angle adjustment device and method for operating a vehicle seat with a seat angle adjustment device
CN103112374A (en) * 2013-02-04 2013-05-22 孙文博 Automobile leveling seat
CN112638747A (en) * 2020-07-24 2021-04-09 华为技术有限公司 Steer-by-wire system and steering control method
CN112638747B (en) * 2020-07-24 2021-12-03 华为技术有限公司 Steer-by-wire system and steering control method

Also Published As

Publication number Publication date
DE2950354A1 (en) 1981-06-19
GB2065464B (en) 1983-12-21
DE2950354C2 (en) 1982-09-23

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PCNP Patent ceased through non-payment of renewal fee