Vehicle seat having a drive for backrest and head-restraint adjustment

Patent metadata

Field	Value
Publication number	US-10144311-B2
Application number	US-201414917543-A
Country	US
Kind code	B2
Filing date	Aug 25, 2014
Priority date	Sep 9, 2013
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

A vehicle seat is provided. The vehicle seat comprises at least one backrest which is pivotally mounted relative to a seating surface of the vehicle seat; a backrest adjusting mechanism and a drive for pivoting the backrest; and at least one headrest on the backrest, which by means of a headrest adjusting mechanism is adjustable in its height relative to the backrest at least along a direction of longitudinal extension of the backrest. It is provided that beside the backrest adjusting mechanism the drive is coupled with the headrest adjusting mechanism, in order to simultaneously transmit an adjustment force to the headrest adjusting mechanism when the backrest is pivoted in at least one backrest adjustment direction. In addition, there is proposed a backrest module with a drive which beside a backrest adjusting mechanism is coupled with a headrest adjusting mechanism.

First claim

The invention claimed is:

1. A vehicle seat comprising:
a backrest which is pivotally mounted relative to a seating surface of the vehicle seat;
a backrest adjusting mechanism and a drive for pivoting the backrest; and
a headrest on the backrest having a height relative to the backrest adjustable by a headrest adjusting mechanism in its height at least along a direction of longitudinal extension of the backrest,
wherein beside the backrest adjusting mechanism the drive is coupled with the headrest adjusting mechanism, in order to simultaneously transmit an adjustment force to the headrest adjusting mechanism when the backrest is pivoted towards the seating surface and away from the seating surface, and
wherein the drive includes a transmission device with several transmission outputs and the drive is coupled with the backrest adjusting mechanism at a first transmission output of the transmission device and with the headrest adjusting mechanism at a second transmission output of the transmission device so that the motor is configured to drive the backrest adjusting mechanism via the first transmission output and is configured to drive the headrest adjusting mechanism via the second transmission output.

2. The vehicle seat according to claim 1 , wherein the backrest is pivotable onto the seating surface of the vehicle seat via the drive and the drive is coupled with the headrest adjusting mechanism such that the headrest is maximally lowered when the backrest is pivoted onto the seating surface.

3. The vehicle seat according to claim 1 , wherein the headrest adjusting mechanism includes an adjusting element carrying the headrest, which is adjustably guided along a guide relative to a backrest frame of the backrest.

4. The vehicle seat according to claim 3 , wherein the guide includes at least one slotted guide along which a guiding element of the adjusting element is slidingly guided.

5. The vehicle seat according to claim 3 , wherein via the guide a linearly extending guideway is defined.

6. The vehicle seat according to claim 3 , wherein the adjusting element is mounted on the backrest frame via at least one rotary joint.

7. The vehicle seat according to claim 3 , wherein the headrest is adjustably mounted on the adjusting element.

8. The vehicle seat according to claim 3 , wherein the headrest adjusting mechanism comprises a spindle drive with a translatorily adjustable drive element for adjusting the headrest and a flexible drive shaft and wherein the drive element is coupled with the adjusting element carrying the headrest.

9. The vehicle seat according to claim 3 , wherein via the guide a guideway with a linearly extending portion and at least one further portion extending obliquely thereto is defined.

10. The vehicle seat according to claim 1 , wherein the headrest adjusting mechanism comprises at least one of a spindle drive with a translatorily adjustable drive element for adjusting the headrest and a flexible drive shaft.

11. The vehicle seat according to claim 1 , wherein the vehicle seat includes a further adjusting mechanism via which the seating surface is lowered when the backrest is pivoted onto the seating surface, and the drive likewise is coupled with the adjusting mechanism for lowering the seating surface.

12. The vehicle seat according to claim 1 , wherein the vehicle seat is provided for a rear seat row of a vehicle and/or is formed as rear bench.

13. A backrest module for a backrest of a vehicle seat to be mounted pivotally relative to a seating surface of the vehicle seat, the backrest module comprising:
a backrest frame,
a backrest adjusting mechanism and a drive for pivoting the backrest, wherein the backrest adjusting mechanism and the drive are premounted on the backrest frame, and
a headrest adjustably mounted on the backrest frame in at least along a direction of longitudinal extension of the backrest frame via a headrest adjusting mechanism likewise premounted on the backrest frame,
wherein beside the backrest adjusting mechanism the drive is coupled with the headrest adjusting mechanism, in order to simultaneously transmit an adjustment force to the headrest adjusting mechanism when the backrest is pivoted towards the seating surface and away from the seating surface, and
wherein the drive includes a transmission device with several transmission outputs and the drive is coupled with the backrest adjusting mechanism at a first transmission output of the transmission device and with the headrest adjusting mechanism at a second transmission output of the transmission device so that the motor is configured to drive the backrest adjusting mechanism via the transmission output and is configured to drive the headrest adjusting mechanism via the second transmission output.

Assignees

• Brose Fahrzeugteile

Inventors

• Kroener Gregor

Classifications

• B60N2/0232

  Operations & Transport · mapped topic

• B60N2/835

  specially adapted for rear seats · CPC title

• B60N2/22 Primary

  the back-rest being adjustable {(B60N2/2878 takes precedence)} · CPC title

• B60N2/829

  characterised by their adjusting mechanisms, e.g. electric motors · CPC title

• B60N2/02246 Primary

  Electric motors therefor · CPC title