Vehicle seat

• US 10,207,599 B2
• Filed: 08/16/2017
• Issued: 02/19/2019
• Est. Priority Date: 10/06/2016
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Yagi, Yuji
• Primary Examiner(s): Wendell, Mark R
• Application Number:
  US15/678,650
• Publication Number:
  US 20180099583A1
• Time in Patent Office: 552 Days
• Field of Search: 29734412
• 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, the seat cushion frame including a pair of side frames opposing one another in a seat width direction, a first side frame of the pair of side frames being disposed at a first side of the seat cushion frame in the seat width direction, and a second side frame of the pair of side frames being disposed at a second side of the seat cushion frame in the seat width direction;

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

a drive unit disposed at a front side of the seat cushion frame in the front-rear direction and directly mounted to an inner face of the first side frame of the pair of side frames; and

a first driving force transmission unit coupling the drive unit with the rotation axle, the first driving force transmission unit being configured to transmit driving force of the drive unit to the rotation axle.

2. The vehicle seat according to claim 1, further comprising:

a lifting and lowering apparatus configured to move the seat cushion frame upward and downward with respect to a base provided at a floor surface; and

a lifter drive unit configured to drive the lifting and lowering apparatus and mounted to an inner face of the second side frame of the pair of side frames.

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

a second driving force transmission unit coupling an operating unit with the lifter drive unit, the second driving force transmission unit being configured to transmit driving force of the lifter drive unit to the operating unit, the operating unit being disposed at a rear end portion of the second side frame of the pair of side frames and configured to operate the lifting and lowering apparatus;

wherein

the lifter drive unit is disposed at a front side of the second side frame in the front-rear direction.

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

a lower end portion of the seatback is disposed at a rear side of a 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.