VEHICLE SEAT

• US 20180099583A1
• Filed: 08/16/2017
• Published: 04/12/2018
• Est. Priority Date: 10/06/2016
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: YAGI, Yuji
• Granted Patent: US 10,207,599 B2
• Time in Patent Office: Days
• CPC Class Codes: B60N 2/02246 Electric motors therefor
• CPC Class Codes: B60N 2/02253 characterised by the transmission between the electric motor and the seat or seat parts
• CPC Class Codes: B60N 2/02258 characterised by the mounting of the electric motor for adjusting the seat
• CPC Class Codes: B60N 2/1615 Parallelogram-like structure
• CPC Class Codes: B60N 2/1635 characterised by the drive mechanism
• CPC Class Codes: B60N 2/165 Gear wheel driven mechanism
• CPC Class Codes: B60N 2/2213 Gear wheel driven mechanism B60N2/2231, B60N2/225 take precedence
• CPC Class Codes: B60N 2/68 Seat frames
• CPC Class Codes: B60N 2205/50 Interlocking shaft arrangements transmitting movement between hinge mechanisms on both sides of a seat

Abstract

A vehicle seat includes a seat cushion frame provided at a seat cushion; a seatback frame structuring a seatback, the seatback frame being rotatably coupled to a front-rear direction rear end portion of the seat cushion frame via a rotation axle; a drive unit disposed at a front-rear direction front side of the seat cushion frame; and a first driving force transmission unit that couples the drive unit with the rotation axle and transmits driving force of the drive unit to the rotation axle.

Claims

1. A vehicle seat comprising:

a seat cushion frame provided at a seat cushion;

a seatback frame structuring a seatback, the seatback frame being rotatably coupled to a front-rear direction rear end portion of the seat cushion frame via a rotation axle;

a drive unit disposed at a front-rear direction front side of the seat cushion frame; and

a first driving force transmission unit that couples the drive unit with the rotation axle and transmits driving force of the drive unit to the rotation axle.

2. The vehicle seat according to claim 1, wherein:

the seat cushion frame includes a pair of side frames that oppose one another, one of the pair being disposed at one side of the seat cushion frame in a seat width direction, the other of the pair being disposed at the other side of the seat cushion frame in the seat width direction; and

the drive unit is mounted to a face of a seat width direction inner side of the one side frame of the pair of side frames.

3. The vehicle seat according to claim 2, further comprising:

a lifting and lowering apparatus configured to move the seat cushion frame upward and downward in an up-down direction with respect to a base provided at a floor surface; and

a lifter drive unit that drives the lifting and lowering apparatus,

wherein the lifter drive unit is mounted to a face of a seat width direction inner side of the other side frame of the pair of side frames.

4. The vehicle seat according to claim 3, wherein:

the lifter drive unit is disposed at a front-rear direction front side of the other side frame;

and the vehicle seat further includes a second driving force transmission unit that couples an operating unit with the lifter drive unit and transmits driving force of the lifter drive unit to the operating unit, the operating unit being disposed at a front-rear direction rear end portion of the other side frame and operating the lifting and lowering apparatus.

5. The vehicle seat according to claim 1, wherein:

a lower end portion of the seatback is disposed at a rear side of a front-rear direction rear end portion of the seat cushion; and

at least a portion of the lower end portion of the seatback is disposed at a lower side with respect to a sitting face of the seat cushion.