Emergency seat recline system for automobile and method therefor

• US 5,791,430 A
• Filed: 08/08/1996
• Issued: 08/11/1998
• Est. Priority Date: 08/08/1996
• Status: Expired due to Fees

• Current Assignee: Wayne Wan
• Original Assignee: Wayne Wan
• Inventors: Wan, Wayne
• Primary Examiner(s): ELDRED, JOHN W
• Application Number:
  US08/689,364
• Time in Patent Office: 733 Days
• Field of Search: 180/271, 180/282, 280/734, 280/743.1, 280/728.1, 280/728.2, 280/730.1, 280/753, 701/49
• US Class Current: 180/282
• CPC Class Codes: B60N 2/4221 due to impact coming from the front
• CPC Class Codes: B60N 2/42745 of the back-rest B60N2/433 takes precedence; higher part of the back-rest moving together with the headrest B60N2/888
• CPC Class Codes: B60N 2/4279 electric or electronic triggering
• CPC Class Codes: B60R 21/16 Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags protective garments with automatically inflatable shock-absorbing means A41D13/018; connection of valves to inflatable elastic bodies B60C29/00

Abstract

The emergency reline system for an automobile is used in conjunction with an air bag system and a reclining seat system. The seat is pivotally movable by a motor upon application of a reclining motor control signal. The emergency recline system includes a sensor which detects unwanted deceleration and which generates a trigger signal. The trigger signal is delayed by a delay circuit for a predetermined period of time. The delayed trigger signal is then applied as the reclining motor control signal to the motor such that after the predetermined time, the delayed trigger signal reclines the seat. This relieves the pressure developed by the deployed air bag on the driver or the passenger in the seat. A method for reclining the seat includes sensing unwanted deceleration, generating a trigger signal, delaying the trigger signal for a predetermined time, and then applying that delayed trigger signal as the reclining motor control signal to the motor or motor control. To insure that the reclining seat is moved by the motor, a fail safe or power backup system may also be utilized.

Claims

1. An emergency recline system for an automobile or other vehicle having an airbag, actuated during unwanted deceleration of the vehicle, and having a reclining seat pivotally movable by a motor upon application of a reclining motor control signal, the emergency recline system comprising:

means for sensing the unwanted deceleration and for generating a trigger signal thereupon;

means for delaying the trigger signal for a predetermined time period;

means for converting the delayed trigger signal into the reclining motor control signal such that after the predetermined time, the delayed trigger signal reclines the seat.

2. An emergency recline system as claimed in claim 1 wherein said airbag is coupled to an airbag control system, said airbag control system having a deceleration sensor therein, and the means for sensing including said deceleration sensor.

3. An emergency recline system as claimed in claim 2 including a power backup system coupled to said means for converting and said motor, said power backup system supplying power to said motor upon application of the delayed trigger signal.

4. An emergency recline system as claimed in claim 1 wherein said means for sensing includes an accelerometer.

5. An emergency recline system as claimed in claim 1 wherein said means for sensing includes a mechanical switch mounted near the airbag, said switch coupled to means for generating the trigger signal, said mechanical switch being actuated upon deployment of said airbag.

6. An emergency recline system as claimed in claim 4 including a power backup system coupled to said means for converting and said motor, said power backup system supplying power to said motor upon application of the delayed trigger signal.

7. An emergency recline system as claimed in claim 5 including a power backup system coupled to said means for converting and said motor, said power backup system supplying power to said motor upon application of the delayed trigger signal.

8. A method for reclining a seat in an automobile or other vehicle during sudden, unwanted deceleration and after deployment of an airbag therein, said seat being reclined by a motor upon application of a reclining motor control signal, the method comprising the steps of:

sensing the unwanted deceleration and generating a trigger signal thereupon;

delaying the trigger signal for a predetermined time period;

converting the delayed trigger signal into the reclining motor control signal such that after the predetermined time, the delayed trigger signal reclines the seat.

9. A method as claimed in claim 8 including the step of providing backup power to said motor upon application of said delayed trigger signal.

10. A method as claimed in claim 8 wherein the step of sensing includes the step of mechanically sensing the deployment of said airbag.

11. A method as claimed in claim 10 including the step of providing backup power to said motor upon application of said delayed trigger signal.