Vehicle seat assembly

• US 20080211283A1
• Filed: 01/16/2008
• Published: 09/04/2008
• Est. Priority Date: 01/18/2007
• Status: Active Grant

• Current Assignee: NHK Spring Company Limited
• Original Assignee: NHK Spring Company Limited
• Inventors: Okano, Ritsuro, Hagiwara, Shinsuke, Aoki, Jun
• Granted Patent: US 7,637,571 B2
• Time in Patent Office: Days
• US Class Current: 297/341
• CPC Class Codes: B60N 2/1821 Combination of Rods and slides
• CPC Class Codes: B60N 2/1839 pivoting about an axis located in an intermediate position
• CPC Class Codes: B60N 2/2209 by longitudinal displacement of the cushion, e.g. back-rest hinged on the bottom to the cushion and linked on the top to the vehicle frame
• CPC Class Codes: B60N 2/2222 the back-rest having two or more parts

Abstract

Disclosed is a vehicle seat assembly having a feature in a seat cushion angle adjustment mechanism of a seat cushion in a simple configuration. A vehicle seat assembly according to an embodiment of the present invention comprises a seat back, a seat cushion coupled to the seat back, and a seat cushion angle adjustment mechanism for adjusting the seat angle of the seat cushion. The seat cushion angle adjustment mechanism comprises a seat cushion frame, a pivotal coupling member to pivotably couple the seat cushion frame to a slider of the seat rail, a guided part provided at a position away from a coupled position of the seat cushion frame to the pivotal coupling member, and a guide member having a guide groove which engages the guided part and guides the movement of the guided part and disposed with an angle between the guide groove and the slide surface of the seat rail set to a specific angle α.

Claims

1. A vehicle seat assembly comprising:

a seat back;

a seat cushion coupled to the seat back; and

a seat cushion angle adjustment mechanism for adjusting a seat cushion angle of the seat cushion;

wherein

the seat cushion angle adjustment mechanism comprising;

a seat cushion frame;

a pivotal coupling member for pivotably coupling the seat cushion frame to a slider of a seat rail;

a guided member coupled to the seat cushion frame and movement of the guided member being guided at a position away from a coupled position of the pivotal coupling member and the slider; and

a guide member for guiding movement of the guided member in a specific angular direction crossing with a sliding direction of the slider so as to change a seat cushion angle with sliding of the seat cushion.

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

the guide member engages the guided member and has a long hole for guiding movement of the guided member.

3. The vehicle seat assembly according to claim 1, wherein

the slider slides substantially linearly on along the seat rail;

and

the guide member guides the guided member to move linearly toward the specific angular direction.

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

the guide member is formed integrally with a bracket to fix the seat rail to a vehicle body.

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

the seat back comprises an upper frame and a lower frame bendably coupled to the upper frame;

the upper frame has a slide mechanism for sliding in the up-down direction of the seat; and

the lower frame is pivotably coupled to a seat back side end of the seat cushion frame.

6. The vehicle seat assembly according to claim 1, wherein

couplers of a pair of the pivotal coupling members to the seat cushion frame are disposed to point to either one of the right and left directions of the seat on the right and left seat rails;

and

a pair of the guide members are disposed on the same side of either one of the right and left directions of the seat in the right and left seat rails.