Adjusting device for longitudinal adjustment of a vehicle seat and method for assembly

Patent metadata

Field	Value
Publication number	US-10486556-B2
Application number	US-201816103050-A
Country	US
Kind code	B2
Filing date	Aug 14, 2018
Priority date	Jun 30, 2015
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

An adjusting device for longitudinal adjustment of a vehicle seat comprises a lower rail 2 and a second rail 1 movably guided relative to the first rail. A first end stop 4 is supported on the second rail 1 or on the first rail 2 at a central position so as to be displaceable in the longitudinal direction, for defining the front end position and/or rear end position of the second rail 1 by cooperation with the first rail 2 or the second rail 1 and edges of a retainer cage 6 used for accommodating bearing members. According to the invention the total travel range of the adjusting device can be extended, because the central end stop can be displaced in longitudinal direction.

First claim

What is claimed is:

1. An adjusting device for longitudinal adjustment of a vehicle seat, comprising:
a first rail and a second rail, which second rail is movably guided in a longitudinal direction relative to the first rail, and
an end stop for defining a front end position and/or a rear end position of the second rail relative to the first rail, wherein
a recess is formed in the second rail or in the first rail, said recess extending in the longitudinal direction and having a rear edge and a front edge,
a length of the recess is larger than a length of the end stop,
the end stop is formed as a part separate to the first rail and second rail, the end stop is not fixed to the first rail or second rail at a fixed single position, and
the end stop is supported on the second rail or on the first rail by a positive-fit so as to be displaced in the recess in the longitudinal direction and relative to the first rail or to the second rail by movement of the second rail relative to the first rail, so that the front end position and/or the rear end position of the second rail relative to the first rail is defined by cooperation of the end stop with the first rail or with the second rail and with one of the rear edge and front edge of the recess; wherein
an oblong retainer for accommodating bearing members is disposed between the first rail and the second rail,
the oblong retainer is supported so as to be displaceable in the longitudinal direction, and
the front end position and/or rear end position of the second rail is further defined by cooperation of the end stop with the oblong retainer.

2. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 1 , wherein
the recess is formed in a central region of the adjusting device and extends in the longitudinal direction, and
the end stop is provided in the central region of the adjusting device and extends transverse to the longitudinal direction in a gap between the first rail and the second rail.

3. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 1 , wherein
the oblong retainer comprises a retainer recess extending in the longitudinal direction, and
the front end position and/or the rear end position of the second rail relative to the first rail is further defined by cooperation of the end stop with the retainer recess.

4. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 3 , wherein
the oblong retainer comprises a front side wall and a rear side wall, said retainer recess being formed between the front side wall and the rear side wall, and
the length of the retainer recess corresponds to a maximum travel range of the second rail relative to the first rail.

5. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 4 , wherein the oblong retainer does not extend beyond a front edge or rear edge of the first rail or second rail in any of the end positions of the second rail.

6. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 1 , wherein the end stop is integrally formed of a resin or plastic material.

7. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 1 , wherein the first rail is a lower rail and the second rail is an upper rail.

8. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 1 , wherein the first rail is an upper rail and the second rail is a lower rail.

9. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 1 , wherein
one of the first rail and second rail is U-shaped and the other one of the first rail and second rail is inverse U-shaped,
each of the first rail and the second rail has a base leg extending in parallel with each other,
the second rail comprises a lateral bearing area formed by a bearing leg of the second rail extending under an acute angle relative to the base leg of the second rail, and
the recess is formed in the bearing leg of the second rail, said recess extending in the longitudinal direction.

10. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 9 , wherein the end stop positively grips behind the lateral bearing area of the second rail so as to be displaceably supported on the second rail.

11. An adjusting device for longitudinal adjustment of a vehicle seat, comprising:
a first rail and a second rail, which second rail is movably guided in a longitudinal direction relative to the first rail, and
an end stop for defining a front end position and/or a rear end position of the second rail relative to the first rail, wherein
a recess is formed in the second rail or in the first rail, said recess extending in the longitudinal direction and having a rear edge and a front edge,
a length of the recess is larger than a length of the end stop,
the end stop is formed as a part separate to the first rail and second rail, the end stop is not fixed to the first rail or second rail at a fixed single position, and
the end stop is supported on the second rail or on the first rail by a positive-fit so as to be displaced in the recess in the longitudinal direction and relative to the first rail or to the second rail by movement of the second rail relative to the first rail, so that the front end position and/or the rear end position of the second rail relative to the first rail is defined by cooperation of the end stop with the first rail or with the second rail and with one of the rear edge and front edge of the recess,
wherein one of the first rail and second rail is U-shaped and the other one of the first rail and second rail is inverse U-shaped,
each of the first rail and the second rail has a base leg extending in parallel with each other,
the second rail comprises a lateral bearing area formed by a bearing leg of the second rail extending under an acute angle relative to the base leg of the second rail, and
the recess is formed in the bearing leg of the second rail, said recess extending in the longitudinal direction.

12. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 11 , wherein
the end stop positively grips behind the lateral bearing area of the second rail so as to be displaceably supported on the second rail.

13. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 12 , wherein the second rail is an upper rail of the adjusting device and comprises
the base leg,
an L-leg projecting substantially perpendicularly from the base leg,
a connecting leg, which projects therefrom and extends in parallel with the base leg and the bearing leg, which extends relative to the connecting leg under an acute angle and towards an interior of the adjusting device; wherein
the lateral bearing area of the second rail is formed by the bearing leg of the second rail, and
the end stop positively grips behind the bearing leg.

14. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 11 , wherein the end stop comprises a base member and a supporting surface spaced apart from each other, for forming a guide channel, wherein a shape of the base member is formed corresponding to a shape of the bearing leg of the second rail.

15. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 14 , wherein the base member comprises a slanted connecting leg and an embracing portion, for embracing an edge of the recess.

16. The adjusting device for longitudinal adjustment of

Assignees

• Brose Fahrzeugteile

Inventors

• Ioppolo Leo
• Herr Paul

Classifications

• B60N2/0715

  C or U-shaped · CPC title

• B60N2/0705

  omega-shaped · CPC title

• B60N2/0722 Primary

  Constructive details · CPC title

• B60N2/0727 Primary

  Stop members for limiting sliding movement · CPC title

• B60N2205/20

  Measures for elimination or compensation of play or backlash · CPC title