Motor-vehicle headrest

• US 10,618,441 B2
• Filed: 02/13/2015
• Issued: 04/14/2020
• 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
• Primary Examiner(s): Brindley, Timothy J
• Application Number:
  US14/621,585
• Publication Number:
  US 20150232003A1
• Time in Patent Office: 1,887 Days
• Field of Search: 297408
• 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 (23a, 23b), the bolt (19) is movable out of the one position engaging the strike (23a, 23b) 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 (23a, 23b) 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 (25a, 25b).

Claims

1. A vehicular headrest comprising:

a rod;

a head support pivotal on the rod about an axis between angularly offset positions;

a strike fixed to the rod and formed with a radially outwardly open recess having a strike face;

a latch bolt limitedly movable on the support between

a latched position engaged in the recess and preventing pivoting of the head support on the rod in at least one pivot direction by contact of the bolt with the strike face and

a release position clear of the recess and freeing the head support to pivot on the rod; and

a wedge braced against the support and urging the bolt against the strike face.

2. A vehicular headrest comprising:

a rod;

a support pivotal on the rod about an axis between angularly offset positions;

a strike fixed to the rod and formed with a strike face;

a latch bolt limitedly movable on the support between

a latched position engaged in the recess and preventing pivoting of the support on the rod in at least one pivot direction by contact of the bolt with the strike face, and

a release position clear of the recess and freeing the support to pivot on the rod;

a biasing element braced against the support and urging the bolt into the latched position and against the strike face;

an abutment on the support and having an abutment face engageable with the bolt to limit freedom of motion of the bolt relative to the support; and

another biasing element braced against the support and urging the bolt against the abutment face.

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

4. The headrest defined in claim 3, wherein the support is biased into the out-of-use position by a reset device.

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

6. The headrest defined in claim 2, wherein the biasing element is a spring.

7. A vehicular headrest comprising:

a rod;

a head support pivotal on the rod about an axis between angularly offset positions;

a strike fixed to the rod and formed with a radially outwardly open recess having a strike face;

a latch bolt movable on the support between

a latched position engaged in the recess and preventing pivoting of the head support on the rod in at least one pivot direction by contact of the bolt with the strike face and

a release position clear of the recess and freeing the head support to pivot on the rod,

the bolt being limitedly movable on the head support;

an abutment on the support and having an abutment face engageable with the bolt to limit freedom of motion of the bolt relative to the support; and

a biasing element braced against the support and urging the bolt against the abutment face.