US 11,654,798 B2
Vehicle seat
Takatoshi Nakazawa, Tochigi (JP); Wataru Honda, Tochigi (JP); and Hiromi Taniguchi, Tochigi (JP)
Assigned to TS TECH CO., LTD., Asaka (JP)
Filed by TS TECH CO., LTD., Asaka (JP)
Filed on Jun. 3, 2022, as Appl. No. 17/832,078.
Application 17/832,078 is a continuation of application No. 17/203,970, filed on Mar. 17, 2021, granted, now 11,364,820.
Application 17/203,970 is a continuation of application No. 16/498,037, granted, now 10,953,770, issued on Mar. 23, 2021, previously published as PCT/JP2018/011654, filed on Mar. 23, 2018.
Claims priority of application No. 2017-073464 (JP), filed on Apr. 3, 2017.
Prior Publication US 2022/0289080 A1, Sep. 15, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A47C 1/02 (2006.01); A47C 1/11 (2006.01); B60N 2/16 (2006.01); B60N 2/02 (2006.01)
CPC B60N 2/161 (2013.01) [B60N 2/0232 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A vehicle seat, comprising:
a base member supported by a vehicle body;
a frame movable relative to the base member;
a link mechanism that supports the frame to be movable relative to the base member;
a drive mechanism that drives the frame; and
a torsion bar that, to urge the frame to a predetermined direction, extends between left and right side portions of the frame and has lateral first and second ends respectively joined to a first portion and a second portion that rotate relative to each other,
wherein the torsion bar includes a shaft portion extending in a lateral direction,
the first portion supports the first end of the torsion bar and supports a part of the shaft portion of the torsion bar adjacent to the second end via a position holding member for suppressing displacement of the torsion bar,
one of the frame and the link mechanism includes a connection member that is rotatable relative to the other,
the connection member constitutes the first portion,
the position holding member is received, in part, in the connection member,
one or more protrusions are provided on an outer circumferential surface of the position holding member.