SEAT FOR VEHICLE

• US 20110043024A1
• Filed: 08/20/2010
• Published: 02/24/2011
• Est. Priority Date: 08/21/2009
• Status: Active Grant

• Current Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.), Toyota Boshoku Kabushiki Kaisha
• Original Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.), Toyota Boshoku Kabushiki Kaisha
• Inventors: KOKUBO, Motohiro, Hatano, Masaki, Hayahara, Hiroaki, Fujisawa, Hideki, Iwasa, Kazuya
• Granted Patent: US 8,579,368 B2
• Time in Patent Office: Days
• US Class Current: 297/378.1
• CPC Class Codes: B60N 2/02246 Electric motors therefor
• CPC Class Codes: B60N 2/3013 the back-rest being hinged on the vehicle frame
• CPC Class Codes: B60N 2/3065 in a longitudinal-vertical plane
• CPC Class Codes: B60N 2/309 rods
• CPC Class Codes: B60N 2/3093 slides
• CPC Class Codes: B60N 2/856 movable to an inoperative or stowed position
• CPC Class Codes: B60N 2/859 specially adapted for rear seats

Abstract

A seat for a vehicle includes a seat cushion frame reciprocating between seating and retracted positions, a seat back frame rotatable between standing and forward-tilted positions, a head rest movable between stationary and retracted positions, a pair of links provided at both end portions of the seat cushion frame on a floor in a lateral direction of the vehicle, a guide member including a guide groove extending between the seating and retracted positions, a slide member arranged at the seat cushion frame and sliding along the guide groove, a head rest retaining device retaining the head rest in the stationary position, a rotary member supported by the seat back frame and rotated by the slide member, and an interlocking device arranged between the rotary member and the head rest retaining device and releasing the head rest from the stationary position in accordance with a rotation of the rotary member.

Claims

1. A seat for a vehicle, comprising:

a seat cushion frame adapted to be moved in a reciprocating manner between a seating position and a retracted position and to support a seat cushion;

a seat back frame adapted to be rotated between a standing position and a forward-tilted position and to support a seat back;

a head rest supported at an upper end portion of the seat back frame and movable between a stationary position and a retracted position;

a pair of links provided at both end portions of the seat cushion frame in a lateral direction of the vehicle, one end of each link being adapted to be pivotably connected to a vehicle floor and the other end of each link connected to a front portion of the seat cushion frame;

a guide member arranged at the vehicle floor and including a guide groove formed to extend between the seating position and the retracted position of the seat cushion frame;

a slide member arranged at a rear end portion of the seat cushion frame and slidably engaging with the guide groove;

a head rest retaining device retaining the head rest in the stationary position;

a rotary member rotatably supported by the seat back frame and rotated by the slide member sliding along the guide groove of the guide member; and

an interlocking device arranged between the rotary member and the head rest retaining device and releasing the head rest from the stationary position in accordance with a rotation of the rotary member, the head rest being retained in the stationary position by the head rest retaining device.

2. The seat according to claim 1, wherein the rotary member includes an operating arm connected to an end portion of the interlocking device and a pivot link arranged coaxially with the operating arm, pivotably supported by the operating arm relative thereto, and rotated by contacting with the slide member, and

wherein a first biasing member arranged between the operating arm and the seat back frame biases the operating arm relative to the seat back frame in one direction and a second biasing member arranged between the pivot link and the operating arm biases the pivot link relative to the operating arm in the other direction.

3. The seat according to claim 1, wherein the seat back frame is driven by a first electric motor to rotate between the standing position and the forward-tilted position, and the seat cushion frame is driven by a second electric motor to reciprocate between the seating position and the retracted position.

4. The seat according to claim 2, wherein the seat back frame is driven by a first electric motor to rotate between the standing position and the forward-tilted position, and the seat cushion frame is driven by a second electric motor to reciprocate between the seating position and the retracted position.