Headrest support device

Patent metadata

Field	Value
Publication number	US-10821867-B2
Application number	US-201916507196-A
Country	US
Kind code	B2
Filing date	Jul 10, 2019
Priority date	Aug 4, 2015
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

Provided is a simple and compact headrest support device. The headrest support device ( 20 ) comprises a support member ( 22 ) coupled to a frame ( 2 ) of a seatback ( 1 ), and a headrest pillar structure including a pillar base portion ( 25 ) extending laterally and supported by the support member so as to be rotatable around an axial line of the pillar base portion, and a pair of pillar main body portions ( 26 ) extending substantially vertically from the pillar base portion substantially in parallel to each other in a laterally spaced apart relationship and connected to a headrest ( 24 ), wherein the support member is coupled to the frame at at least one coupling portion ( 34 ) disposed between the two pillar main body portions in front view in a headrest upright condition where the headrest is positioned above the seatback.

First claim

The invention claimed is:

1. A headrest support device comprising:
a headrest pillar structure including a pillar base portion extending laterally and a pair of pillar main body portions extending substantially vertically from the pillar base portion substantially in parallel to each other in a mutually spaced apart relationship;
a support member including a first member and a second member combined to each other so as to defined an internal space therebetween, the internal space receiving the pillar base portion and the first member and the second member jointly forming a bearing hole supporting the pillar base portion rotatably;
a pillar side locking member fixedly attached to the pillar base portion and positioned in the internal space; and
a support member side locking member moveably attached to the support member and positioned in the internal space to selectively engage the pillar side locking member to fix a relative angle between the headrest pillar structure and the support member,
wherein one of the support member and the pillar main body portions is coupled to a seatback and the other of the support member and the pillar main body portions is coupled to a headrest,
the pillar side locking member has a pillar side abutting portion,
one of the first member and the second member has a support member side abutting portion abutting the pillar side abutting portion so as to define the rotational range of the headrest pillar structure relative to the support member,
one of the pillar side abutting portion and the support member side abutting portion has a cushioning material having a flexibility,
the pillar side abutting portion, the support member side abutting portion and the cushioning material are positioned in the internal space.

2. The headrest support device according to claim 1 , wherein the first member has a first bearing wall and the second member has a second bearing wall, the first bearing wall and the second bearing wall abuts each other so as to jointly form the bearing hole.

3. The headrest support device according to claim 2 , wherein the first bearing wall has a pair of resilient claws configured to resiliently engage the pillar base portion, the second bearing wall has receiving recesses configured to receive the resilient claws.

4. The headrest support device according to claim 1 , wherein the first member and the second member are joined to each other at least two coupling portions located on either side of the pillar base portion.

5. The headrest support device according to claim 1 , wherein
the support member side locking member is rotatable between an engaged position where the support member side locking member engages the pillar side locking member and a disengaged position where the support member side locking member is displaced from the pillar side locking member,
the support member side locking member is biased toward the engaged position by a biasing member,
the support member side locking member is coupled to one end of an operation member, the other end of the operation member extending out of the support member.

6. The headrest support device according to claim 1 , wherein the second member forms a bulging portion that bulges forward relative to the edge portion, the internal space is defined between the first member and the second member owing to the bulging portion.

7. The headrest support device according to claim 6 , wherein the support member is connected to a seatback frame by a plurality of bolts fastening the first member and the second member.

8. The headrest support device according to claim 1 , wherein the seatback includes a pair of left and right side frames extending vertically, a first upper frame connected between the upper ends of the respective side frames, a second upper frame connected between the two side frames under the first upper frame and a pair of right and left first brackets provided at the first upper frame,
the support member is fastened to each of the brackets and the second upper frame.

9. The headrest support device according to claim 8 , wherein the seatback further includes a second bracket extends between the first brackets, the support member is further fastened to the second bracket.

10. A vehicle seat comprising the headrest support device according to claim 1 .

Assignees

• Ts Tech Co Ltd

Inventors

• Okubo Takuya
• Inose Takayuki
• Nonaka Masaki

Classifications

• B60N2/859 Primary

  specially adapted for rear seats · CPC title

• B60N2/856

  movable to an inoperative or stowed position · CPC title

• B60N2/841

  characterised by their locking devices · CPC title

• B60N2/806 Primary

  movable or adjustable · CPC title

• B60N2/80

  Head-rests · CPC title