Vehicle seat

Patent metadata

Field	Value
Publication number	US-11059388-B2
Application number	US-201916515522-A
Country	US
Kind code	B2
Filing date	Jul 18, 2019
Priority date	Mar 18, 2015
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

A vehicle seat comprising: a seat cushion; a seat back; an actuator capable of changing an orientation of the seat back laterally by moving a pressure-receiving member; and a controller configured to exercise control over the actuator. The controller includes a posture control unit configured to execute, during turning of a vehicle, a seat posture control under which the actuator is caused to move the pressure-receiving member from an initial position to an advanced position to cause the seat back to orient toward a turning direction. The posture control unit is configured to activate, when an execution time of the seat posture control has become equal to or greater than an execution time threshold value, a control under which the actuator is caused to move the pressure-receiving member from the advanced position to an intermediate position to reversely change the orientation of the seat back.

First claim

The invention claimed is:

1. A vehicle seat comprising:
a seat cushion; and
a seat back,
wherein the seat back comprises:
left and right side frames which constitute left and right frames of the seat back;
a pressure-receiving member disposed between the left and right side frames to receive a load from an occupant;
left and right link members each provided swingably relative to a respectively corresponding side frame, such that a swinging motion of each of the left and right link members causes a left or right end portion of the pressure-receiving member to move from an initial position toward an advanced position forward of the initial position, or from the advanced position toward the initial position; and
a connecting wire disposed along a back surface of the pressure-receiving member to connect the pressure-receiving member to the left and right link members,

wherein the pressure-receiving member comprises a pressure-receiving portion which faces a back of the occupant, and left and right support portions extending from left and right ends of the pressure-receiving portion laterally outward and frontward,
wherein each of the left and right link members comprises:
a first link member supported at the corresponding side frame; and
a second link member that connects the first link member and the connecting wire, the second link member being disposed rearward of a corresponding support portion, and kept out of contact with the corresponding support portion.

2. The vehicle seat according to claim 1 , wherein part of the connecting wire is disposed between the second link member and the corresponding support portion as viewed from a direction parallel to an axis of the swinging motion of the left or right link member.

3. The vehicle seat according to claim 1 , wherein part of the connecting wire is disposed between an axis of a swinging motion of the second link member and the corresponding support portion as viewed from a direction parallel to the axis of the swinging motion of the second link member.

4. The vehicle seat according to claim 1 , wherein the connecting wire includes left and right bent portions provided at left and right end portions thereof, the left and right bent portions each extending in a direction away from a corresponding support portion, and each of the left and right bent portions being connected at left or right end thereof, to the corresponding second link member.

5. The vehicle seat according to claim 4 , wherein each of the left and right bent portions is located at a distance from the corresponding support portion, and when a rearward load not less than a predetermined magnitude is applied from an occupant to the pressure-receiving member and causes the support portions to deform rearward, each of the left and right bent portions contacts the corresponding support portion.

6. The vehicle seat according to claim 4 , wherein each of the left and right bent portions is so located as to be always in contact with the corresponding support portion from rearward.

7. The vehicle seat according to claim 4 , wherein each of the left and right bent portions is so located as to be contactable with a laterally outer end portion of the corresponding support portion in the advanced position from rearward.

8. The vehicle seat according to claim 1 , further comprising a headrest,
wherein the seat cushion comprises a seat cushion frame, a seat cushion pad, and a seat cushion outer covering, the seat cushion frame being upholstered with the seat cushion pad and the seat cushion outer covering,
wherein the seat back comprises a seat back frame, a seat back pad, and a seat back outer covering, the seat back frame being upholstered with the seat back pad and the seat back outer covering, and
wherein the seat back frame comprises the left and right side frames, an upper frame connecting upper portions of the left and right side frames, and support brackets to which the headrest is attached.

9. The vehicle seat according to claim 8 , wherein the seat back frame further comprises a lower frame, and is formed in a shape of a picture frame with the upper frame, the left and right side frames, and the lower frame joined together.

Assignees

• Ts Tech Co Ltd

Inventors

• Sugiyama Shinji

Classifications

• B60N2/0244 Primary

  with logic circuits · CPC title

• B60N2/99 Primary

  adjustable · CPC title

• B60N2/224

  Stepwise movement mechanisms, e.g. ratchets · CPC title

• B60N2002/0236

  Operations & Transport · mapped topic

• B60N2002/026

  Operations & Transport · mapped topic