Adjustment device for a headrest of a vehicle seat

Patent metadata

Field	Value
Publication number	US-2018257531-A1
Application number	US-201815910047-A
Country	US
Kind code	A1
Filing date	Mar 2, 2018
Priority date	Mar 7, 2017
Publication date	Sep 13, 2018
Grant date	—

Abstract

An adjusting apparatus for adjusting a vehicle seat component of a vehicle seat comprises an adjustment arrangement for adjusting the vehicle seat component and a locking device. The locking device is coupled to the adjustment arrangement to block movement of the vehicle seat component in a locking position.

First claim

1 . An adjusting apparatus for a headrest of a vehicle seat, the adjusting apparatus comprising
a guide device for guiding a headrest support in a vertical direction, a backrest connection for attachment to a backrest, a longitudinal adjustment arrangement for adjusting the guide device in the longitudinal direction, a locking device for locking the adjusting apparatus in both in the longitudinal direction and the vertical direction, and a handle for unlocking the locking device to an unlocking position in which the locking device releases the longitudinal adjustment arrangement in the longitudinal direction and the vertical adjustment arrangement in the vertical direction, wherein a held headrest support is configured to be locked in a vertical position by the locking device.

2 . The adjusting apparatus of claim 1 , wherein the held headrest support is configured to be adjusted in the vertical position and in the longitudinal position in the unlocking position.

3 . The adjusting apparatus of claim 1 , wherein the longitudinal adjustment arrangement includes
a rear link which is pivotably connected in an articulated manner to the backrest connection in a rear lower joint and to the guide device in a rear upper joint, and a front link which is pivotably connected in an articulated manner to the backrest connection in a front lower joint and to the guide device in a front upper link, and wherein a longitudinal position of the guide device is configured to be adjusted, preferably with pivoting of the guide device forward and downward, by pivoting the links.

4 . The adjusting apparatus of claim 2 , wherein the longitudinal adjustment arrangement includes:
a rear link which is pivotably connected in an articulated manner to the backrest connection in a rear lower joint and to the guide device in a rear upper joint, and a front link which is pivotably connected in an articulated manner to the backrest connection in a front lower joint and to the guide device in a front upper link, and wherein a longitudinal position of the guide device is configured to be adjusted by pivoting the links.

5 . The adjusting apparatus of claim 1 , wherein the locking device includes a locking element which has a longitudinal engagement means for defining the longitudinal position of the guide device in the longitudinal direction and a vertical engagement means for defining the vertical position of the headrest support in the vertical direction, and
wherein the longitudinal engagement means and the vertical engagement means are disengaged when the locking device is adjusted to its unlocking position.

6 . The adjusting apparatus of claim 5 , wherein the longitudinal engagement means is formed on a lower region of the locking element and the vertical engagement means is formed on an upper region of the locking element, and
the locking element, when it is adjusted to its unlocking position, is pivoted downward by way of its lower region and rearward by way of its upper region.

7 . The adjusting apparatus of claim 5 , wherein the longitudinal engagement means engages into a mating engagement means of one of the links, preferably in a vertical direction.

8 . The adjusting apparatus of claim 6 , wherein the longitudinal engagement means engages into a mating engagement means of one of the links, preferably in a vertical direction.

9 . The adjusting apparatus of claim 7 , wherein the vertical engagement means protrudes forward through a clearance in the guide device for the purpose of engaging into a held headrest carrier.

10 . The adjusting apparatus of claim 1 , wherein the handle has a pivotable lever arm with a pivot bearing in the guide device.

11 . The adjusting apparatus of claim 1 , wherein the handle is configured to be pivoted into the unlocking position against a spring force of a spring device.

12 . The adjusting apparatus of claim 1 , wherein the distances between the upper joints are fixed and the distances between the lower joints are fixed.

13 . The adjusting apparatus of claim 12 , wherein the links, the guide device and the backrest connection form a four-joint mechanism with about one degree of freedom for longitudinally adjusting the guide device in relation to the backrest connection by adjustment in the joints.

14 . The adjusting apparatus of claim 1 , wherein the rear link is longer than the front link, wherein the rear lower joint is arranged below the front lower joint, and the rear upper joint is arranged above the front upper joint.

15 . A vehicle seat comprising:
a backrest, a headrest, and an adjusting apparatus, wherein the backrest connection of the adjusting apparatus is attached to the backrest and the guide device holds a headrest support of the headrest in a vertically adjustable manner, and wherein during unlocking of the locking device the headrest is configured to be adjusted in the longitudinal direction and vertical direction in relation to the backrest by the adjusting apparatus.

16 . The vehicle seat of claim 15 , wherein the headrest is configured to be adjusted to a plurality of discrete positions in the longitudinal direction and vertical direction.

17 . The vehicle seat of claim 15 , wherein the headrest is configured to be adjusted both in the vertical direction and longitudinal direction simultaneously for the purpose of adjusting both the longitudinal position and the vertical position, and both positions are configured to be fixed when the handle is released.

18 . The vehicle seat of claim 16 , wherein the headrest is configured to be adjusted both in the vertical direction and longitudinal direction simultaneously for the purpose of adjusting both the longitudinal position and the vertical position, and both positions are configured to be fixed when the handle is released.

19 . The vehicle seat of claim 15 , wherein the adjusting apparatus is held beneath a cover, and wherein the cover is connected to the head cushion.

20 . The vehicle seat of claim 15 , wherein the adjusting apparatus is held beneath a cover, and wherein the cover jointly surrounds the head cushion.

Assignees

• Faurecia Autositze Gmbh

Inventors

• Jarrin Clément
• Bulle Herré
• Kowalski Tomasz
• Hagemann Rainer

Classifications

• B60N2/824

  using springs · CPC title

• B60N2/85

  with continuous positioning · CPC title

• B60N2/865 Primary

  providing a fore-and-aft movement with respect to the occupant's head · CPC title

• B60N2/815 Primary

  Release mechanisms, e.g. buttons · CPC title

• B60N2/80

  Head-rests · CPC title