Vehicle seat

Patent metadata

Field	Value
Publication number	US-9758065-B2
Application number	US-201514694337-A
Country	US
Kind code	B2
Filing date	Apr 23, 2015
Priority date	Apr 25, 2014
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A restricting structure that restricts an allowable adjustment range of a backrest angle of a seatback is formed by a surface abutment structure of a bracket provided on the seatback, and an additional stopper provided on a seat cushion. The additional stopper is joined to a lower arm in a state positioned by a positioning hole in the additional stopper being fit onto a positioning pin that is integrated with the lower arm. A plurality of arrangement positions of the additional stopper are able to be selected by providing the positioning pin in a plurality of locations with respect to the lower arm along a path of a specific location along which additional stopper moves with respect to the lower arm, when the backrest angle of the seatback is changed while the additional stopper is surface abutted against, and temporarily fixed to, the bracket.

First claim

What is claimed is:

1. A vehicle seat comprising:
a restricting structure that restricts an allowable adjustment range of a backrest angle of a seatback connected to a base on a floor, to within a certain range, wherein
the restricting structure has an engaging portion provided on the seatback, and an engageable portion provided on the base, and is configured to restrict movement of the seatback in a direction in which the backrest angle changes, by the engaging portion and the engageable portion abutting against one another as a result of the seatback moving in the direction in which the backrest angle changes,
the engaging portion is arranged in a fixed position on the seatback, and the engageable portion is configured to be arranged in a selected one of a plurality of arrangement positions with respect to the base where the engageable portion is provided,
the engageable portion is provided in a selected arrangement position within a region where a given portion of the engageable portion moves with respect to the base, when the backrest angle of the seatback is changed while the engageable portion is temporarily fixed to the engaging portion while being abutted against the engaging portion,
the engageable portion is joined to the base, in a state in which a positioning hole formed in the engageable portion is positioned by being fit onto a positioning pin supported at the base,
a selectable structure that enables the plurality of arrangement positions of the engageable portion to be selected is formed by providing the positioning pin in a plurality of locations with respect to the base, along a path of the positioning hole along which the engageable portion moves with respect to the base, when the backrest angle of the seatback is changed while the engageable portion is temporarily fixed to the engaging portion while being kept surface abutted against the engaging portion,
the base is formed as a thick plate member that is directly joined to a recliner configured to adjust the backrest angle of the seatback, and
the engageable portion is provided in a position that restricts movement of the seatback by abutting against a forward tilt stopper or a backward tilt stopper formed on the thick plate member to prevent the engaging portion from abutting against the forward tilt stopper or the backward tilt stopper.

2. The vehicle seat according to claim 1 , wherein
the positioning pin is provided in a state integrated with the thick plate member by a jig that supports the thick plate member, and is removed after the engageable portion is welded to the thick plate member.

3. The vehicle seat according to claim 1 , wherein
the other is the engaging portion, and is joined to a side frame of the seatback that will be the second member, and the positioning pin is provided fit into a reference hole when forming the side frame, that is made in the side frame, and is removed after the engaging portion is welded to the side frame.

4. The vehicle seat according to claim 3 , wherein
a thick plate-shaped bracket onto which one end of a spring for urging the seatback in the forward rotating direction is to be hooked is joined to the side frame, and the engaging portion is provided extending between the side frame and the bracket and welded to both.

5. The vehicle seat according to claim 4 , wherein
in a structure configured to restrict forward rotational movement of the seatback by the bracket provided on the side frame abutting against the engageable portion provided on the base, as a result of the seatback rotating forward, when the engaging portion is not arranged on the seatback, the engaging portion is provided in a position that restricts movement of the seatback in the forward rotating direction by abutting against the engageable portion before the bracket does.

Assignees

• Toyota Boshoku Kk

Inventors

• Kimura Masahide

Classifications

• B60N2/12

  slidable and tiltable · CPC title

• B60N2/22 Primary

  the back-rest being adjustable {(B60N2/2878 takes precedence)} · CPC title

• B60N2205/50

  Interlocking shaft arrangements transmitting movement between hinge mechanisms on both sides of a seat · CPC title

• B60N2/2356

  with internal pawls · CPC title

• B60N2/4435

  Operations & Transport · mapped topic