Seat apparatus

• US 20060061176A1
• Filed: 09/14/2005
• Published: 03/23/2006
• Est. Priority Date: 09/21/2004
• Status: Active Grant

• Current Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Original Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Inventors: Yamada, Yukifumi, Ito, Sadao, Sakai, Makoto
• Granted Patent: US 7,527,332 B2
• Time in Patent Office: Days
• US Class Current: 297/344.150
• CPC Class Codes: B60N 2/1615 Parallelogram-like structure
• CPC Class Codes: B60N 2/43 Safety locks for back-rests B60N2/433
• CPC Class Codes: B60R 22/26 secured to the seat

Abstract

A vehicle seat apparatus includes a first link vertically movably supporting a seat to a seat rail of a floor side, a second link connecting a seat belt anchor to the seat side for restraining an occupant into the seat and a third link provided between the first link and the second link for connecting the first link and the second link, the third link being engagable with a lock member which is fixedly connected to the seat side. The third link is normally disengaged from the lock member to allow the seat to move in a vertical direction and is engaged with the lock member in an emergency upon receipt of an active force through the seat belt anchor and the second link to control a vertical movement of the seat.

Claims

1. A vehicle seat apparatus comprising:

a first link vertically movably supporting a seat to a seat rail of a floor side;

a second link connecting a seat belt anchor to the seat side for restraining an occupant into the seat; and

a third link provided between the first link and the second link for connecting the first link and the second link, the third link being engagable with a lock member which is fixedly connected to the seat, wherein the third link is normally disengaged from the lock member to allow the seat to move in a vertical direction and is engaged with the lock member in an emergency upon receipt of an active force through the seat belt anchor and the second link to control a vertical movement of the seat.

2. The vehicle seat apparatus according to claim 1, wherein the second link and the third link are configured to be rotatable and slidable each other.

3. The vehicle seat apparatus according to claim 1, wherein the second link is pivotally supported by the third link.

4. The vehicle seat apparatus according to claim 1, further comprising a biasing means provided between the second link and the seat for biasing the second link towards rearward of the vehicle, wherein the third link is normally disengaged from the lock member by a biasing force of the biasing means and is urged and engaged with the lock member by the active force of the second link which is moved forward of the vehicle against the biasing force of the biasing means when the seat belt anchor is pulled forward of the vehicle in the emergency.

5. The vehicle seat apparatus according to claim 2, further comprising a biasing means provided between the second link and the seat for biasing the second link towards rearward of the vehicle, wherein the third link is normally disengaged from the lock member by a biasing force of the biasing means and is urged and engaged with the lock member by the active force of the second link which is moved forward of the vehicle against the biasing force of the biasing means when the seat belt anchor is pulled forward of the vehicle in the emergency.

6. The vehicle seat apparatus according to claim 3, further comprising a biasing means provided between the second link and the seat for biasing the second link towards rearward of the vehicle, wherein the third link is normally disengaged from the lock member by a biasing force of the biasing means and is urged and engaged with the lock member by the active force of the second link which is moved forward of the vehicle against the biasing force of the biasing means when the seat belt anchor is pulled forward of the vehicle in the emergency.

7. The vehicle seat apparatus according to claim 1, further comprising a biasing means provided between the third link and the seat for biasing the third link to be disengaged from the lock member, wherein the third link is normally disengaged from the lock member by a biasing force of the biasing means and is operated and engaged with the lock member in accordance with the movement of the seat belt anchor against the biasing force when the seat belt anchor is pulled forward of the vehicle in the emergency.

8. The vehicle seat apparatus according to claim 2, further comprising a biasing means provided between the third link and the seat for biasing the third link to be disengaged from the lock member, wherein the third link is normally disengaged from the lock member by a biasing force of the biasing means and is operated and engaged with the lock member in the emergency in accordance with the movement of the seat belt anchor against the biasing force when the seat belt anchor is pulled forward of the vehicle.

9. The vehicle seat apparatus according to claim 3, further comprising a biasing means provided between the third link and the seat for biasing the third link to be disengaged from the lock member, wherein the third link is normally disengaged from the lock member by a biasing force of the biasing means and is operated and engaged with the lock member in the emergency in accordance with the movement of the seat belt anchor against the biasing force when the seat belt anchor is pulled forward of the vehicle.

10. A vehicle seat apparatus comprising:

a first link vertically movably supporting a seat to a seat rail of a floor side;

a second link connecting a seat belt anchor to the seat side for restraining an occupant into the seat;

a third link connected to the second link and operated in accordance with the movement of the seat belt anchor when the seat belt anchor is pulled forward of a vehicle in an emergency; and

a lock member provided on the seat rail side and having at least an engaging recess portion filled up with a resin, wherein the third link controls the vertical movement of the seat by breaking the resin of the lock member and engaging with the engaging recess portion of the lock member when the third link is operated in the emergency and the third link is slidably operated along the resin of the lock member in accordance with the vertical movement of the seat in normal operation.

11. The vehicle seat apparatus according to claim 10, wherein plural engaging recess portions are arranged on a side of the lock member.

12. The vehicle seat apparatus according to claim 10, wherein the engaging recess portions are arranged on both sides of the lock member and a first engaging pin to be engaged with one of the engaging recess portions arranged on a first side of the lock member and a second engaging pin to be engaged with one of the engaging recess portions arranged on a second side of the lock member are formed on the third link.

13. The vehicle seat apparatus according to claim 11, wherein the engaging recess portions are arranged on both sides of the lock member and a first engaging pin to be engaged with one of the engaging recess portions arranged on a first side of the lock member and a second engaging pin to be engaged with one of the engaging recess portions arranged on a second side of the lock member are formed on the third link.