Adjusting device for longitudinal adjustment of a vehicle seat, method for assembly thereof and guide piece

Patent metadata

Field	Value
Publication number	US-10940774-B2
Application number	US-201916417738-A
Country	US
Kind code	B2
Filing date	May 21, 2019
Priority date	May 21, 2019
Publication date	Mar 9, 2021
Grant date	Mar 9, 2021

Abstract

An adjusting device for longitudinal adjustment of a vehicle seat comprising a first rail and a second rail movably guided in a longitudinal direction relative to the first rail includes a guide piece mounted to a side-wall of the first rail, comprising a main body, a plurality of connecting devices for connecting to the first rail, and a positioning device locked in a positioning recess, for positioning the guide piece with respect to the first rail in the longitudinal direction. The connecting devices are formed as hook-like members that are inserted through the locking recesses and grip behind the side-wall to fix guide piece to the first rail. The guide piece comprises a flexible portion connected to the positioning device and the main body, which is configured to bend in a transverse direction when mounting the guide piece to the first rail and to be locked in the positioning recess.

First claim

What is claimed is:

1. An adjusting device for longitudinal adjustment of a vehicle seat, comprising:
a first rail provided with a side-wall having an inner surface and an outer surface, defining a plurality of locking recesses and a positioning recess;
a second rail, which is movably guided in a longitudinal direction relative to the first rail; and
a guide piece mounted to the side-wall of the first rail; wherein
the guide piece comprises:
a main body extending in the longitudinal direction,
a plurality of connecting devices provided on a side of the main body facing the inner surface of the side-wall of the first rail and connecting the guide piece to the first rail, and
a positioning device configured to be locked in the positioning recess, for positioning the guide piece with respect to the first rail in the longitudinal direction; wherein

the connecting devices are formed as hook-like members that are inserted through the locking recesses and grip behind the side-wall such that the guide piece is fixed to the first rail,
the guide piece further comprises a flexible portion connected to the positioning device and the main body, and
the flexible portion is configured to bend in a direction transverse to the longitudinal direction when mounting the guide piece to the side-wall and to be locked in the positioning recess such that the hook-like members grip behind the side-wall.

2. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 1 , wherein
the locking recesses each comprise an insertion opening of a base area corresponding to a base area of the connecting devices, and
the hook-like members grip behind the side-wall at locations offset relative to the insertion openings in the longitudinal direction by a predetermined distance.

3. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 2 , wherein
the hook-like members each have a T-shaped cross-section, if viewed in the longitudinal direction,
each of the insertion openings is followed by a locking slot of a width less than a width of the base area of the insertion openings, and
the hook-like members grip behind the side-wall at the locking slots.

4. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 3 , wherein
the hook-like members each comprise a stem of a width corresponding to a width of the locking slots and a retention head of a width larger than a width of the locking slots, wherein
a distance between the main body of the guide piece and each of the retention heads corresponds to a thickness of the side-wall.

5. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 2 , wherein
the hook-like members each have a stem extending in a direction perpendicular to the main body and a retention head extending perpendicular to the stem and in parallel with the main body, and
the retention head of each of the hook-like members grips behind the side-wall at a location offset relative to the insertion openings in the longitudinal direction by the predetermined distance.

6. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 5 , wherein a distance between the main body of the guide piece and each of the retention heads corresponds to a thickness of the side-wall.

7. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 5 , wherein a hook-shaped locking member is formed at the end of each of the retention head, which is received in a locking groove provided in the side-wall adjacent the respective insertion opening.

8. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 1 , wherein
the plurality of connecting devices and the at least one positioning device are aligned to each other in the longitudinal direction, and
the at least one positioning recess comprises a locking groove extending in a direction transverse to the longitudinal direction, for locking the at least one positioning device in the at least one positioning recess and preventing a displacement of the guide piece in the longitudinal direction.

9. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 8 , wherein the at least one positioning recess further comprises an insertion groove extending under an acute angle relative to the locking groove in a direction away from the guide piece, a vertex being formed at a region of intersection between the insertion groove and the locking groove.

10. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 2 , wherein
the plurality of connecting devices and the at least one positioning device are aligned to each other in the longitudinal direction, and
the at least one positioning recess comprises a locking groove extending in a direction transverse to the longitudinal direction, for locking the at least one positioning device in the at least one positioning recess and preventing a displacement of the guide piece in the longitudinal direction, wherein
the at least one positioning recess further comprises an insertion groove extending under an acute angle relative to the groove in a direction away from the guide piece, a vertex being formed at a region of intersection between the insertion groove and the locking groove, and
a distance between the insertion groove and the locking groove corresponds to the predetermined distance.

11. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 1 , wherein
the guide piece further comprises at least one additional positioning device at a position between a front end of the guide piece and a rear end of the guide piece, extending in a direction perpendicular to each of the at least one positioning device, and connecting with the main body via an additional flexible portion, and wherein
at least one additional positioning recess is formed in a second side-wall adjacent the side-wall of the first rail, for receiving the at least one additional positioning device defining the position of the guide piece relative to the first rail in the longitudinal direction.

12. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 11 , wherein the at least one additional positioning recess comprises a locking groove extending in a direction transverse to the longitudinal direction and an insertion groove extending under an acute angle relative to the additional locking groove and toward the side-wall of the first rail, a vertex being formed at a region of intersection between the insertion groove of the at least one additional positioning recess and the locking groove of the at least one additional positioning recess.

13. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 1 , wherein the guide piece is biased toward the inner surface of the side-wall of the first rail and is bow-shaped in a relaxed home position, if viewed in a side view, wherein the side of the main body facing the inner surface of the side-wall of the first rail and being provided with the plurality of connecting devices being a concave inner side of the bow-shaped guide piece in the relaxed home position.

14. The adjusting device for longitudinal adjustment of a vehicle seat as claimed in claim 1 , wherein the side of the main body facing the inner surface of the side-wall of the first rail and being provided with the plurality of connecting devices is a rear side of the guide piece and wherein a front side opposite to the rear side of the guide piece is provided wit

Assignees

• Brose Fahrzeugteile
• Brose Fahrzeugteile Se & Co Kg Coburg

Inventors

• Kujawa Ronald
• Ioppolo Leo

Classifications

• B60N2/123

  and provided with memory locks · CPC title

• B60N2/0722

  Constructive details · CPC title

• B60N2/0727 Primary

  Stop members for limiting sliding movement · CPC title

• B60N2/08

  characterised by the locking device · CPC title

• B60N2/0705 Primary

  omega-shaped · CPC title