MOTOR-VEHICLE HEADREST

• US 20150232003A1
• Filed: 02/13/2015
• Published: 08/20/2015
• Est. Priority Date: 02/17/2014
• Status: Active Grant

• Current Assignee: Grammer AG (Ningbo Jifeng Auto Parts Co.,Ltd.)
• Original Assignee: Grammer AG (Ningbo Jifeng Auto Parts Co.,Ltd.)
• Inventors: NUSS, Ralph
• Granted Patent: US 10,618,441 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60N 2/844 Release mechanisms, e.g. buttons
• CPC Class Codes: B60N 2/847 with stepwise positioning
• CPC Class Codes: B60N 2/853 characterised by their adjusting mechanisms, e.g. electric motors
• CPC Class Codes: B60N 2/856 movable to an inoperative or stowed position
• CPC Class Codes: B60N 2205/20 Measures for elimination or compensation of play or backlash

Abstract

The invention relates, among other things, to a head support (11) retained on the vehicle seat by at least one support rod (13) and movable, in particular pivotable, relative to the support rod (13) between at least two positions, wherein the head support (11) is lockable in at least one of the positions by a latch (18), the latch (18) has a bolt (19) and at least one abutment structure having at least one strike (23 a, 23 b), the bolt (19) is movable out of the one position engaging the strike (23 a, 23 b) and locking the head support (11), the bolt (19) is supported by at least one abutment of an abutment structure on the head support (11), and the abutment and the strike (23 a, 23 b) have at least one abutment face (26, 39, 41).

The novelty is that the bolt (19) is held in contact with at least one of the abutment faces (26, 39, 41) by at least one wedge device (31, 32, 33) and/or by at least one spring unit (25 a, 25 b).

Claims

1. A headrest for a vehicle seat, comprising a head support retained on the vehicle seat by at least one support rod and movable, in particular pivotable, relative to the support rod between at least two positions, wherein

the head support is lockable in at least one of the positions by a latch,

the latch has a bolt and at least one abutment structure having at least one strike

the bolt is movable out of the one position engaging the strike and locking the head support,

the bolt is supported by at least one abutment of an abutment structure on the head support,

the abutment and the strike have at least one abutment face, and

the bolt is held in contact with at least one of the abutment faces by at least one wedge device and/or by at least one spring unit.

3. The headrest defined in claim 1, wherein the strike has at least one recess and that the recess is V-shaped in the engagement direction of the bolt, and the bolt is biased by a spring unit into engagement on two opposing faces of the V-shaped recess.

5. The headrest defined in claim 1, wherein the spring unit is arranged in such a manner that it biases the bolt at the same time into the latched position.

6. The headrest defined in claim 1, wherein the guide has at least two abutments, wherein a first abutment is arranged at a first end of the bolt and a second abutment is arranged at a second end of the bolt.

7. The headrest defined in claim 1, wherein the head support can be moved between at least one use position and at least one out-of-use position.

8. The headrest defined in claim 1, wherein the strike has a recess structure having at least one recess.

9. The headrest defined in claim 1, wherein the head support is biased into the out-of-use position by a reset device.

10. The headrest defined in claim 1, wherein the bolt can be moved in a straight line and/or rotated.

2. A headrest for a vehicle seat, comprising a head support retained on the vehicle seat by at least one support rod and movable, in particular pivotable, relative to the support rod between at least two positions, wherein

the head support is lockable in at least one of the positions by a latch,

the latch has a bolt and at least one abutment structure having at least one strike,

the bolt is movable out of the one position engaging the strike and locking the head support,

the bolt is supported by at least one abutment of an abutment structure on the head support,

the abutment and the strike have at least one abutment face

the strike has at least one recess,

the recess is V-shaped in the engagement direction of the bolt and

the bolt is biased by a spring unit into engagement on two opposing faces of the V-shaped recess.

4. The headrest defined in claim 2, wherein the bolt is biased by at least one wedge device or by at least one spring unit into contact with at least one of the abutment faces.

11. The headrest defined in claim 2 wherein the spring unit is arranged in such a manner that it biases the bolt at the same time into the latched position.

12. The headrest defined in claim 2 wherein the guide has at least two abutments, wherein a first abutment is arranged at a first end of the bolt and a second abutment is arranged at a second end of the bolt.

13. The headrest defined in claim 2 wherein the head support can be moved between at least one use position and at least one out-of-use position.

14. The headrest defined in claim 2 wherein the strike has a recess structure having at least one recess.

15. The headrest defined in claim 2 wherein the head support is biased into the out-of-use position by a reset device.

16. The headrest defined in claim 2 wherein the bolt can be moved in a straight line and/or rotated.