Vehicle safety device control apparatus

• US 5,338,063 A
• Filed: 03/04/1993
• Issued: 08/16/1994
• Est. Priority Date: 03/06/1992
• Status: Expired due to Term

• Current Assignee: Bosch Automotive Systems Corporation (Robert Bosch GmbH)
• Original Assignee: Airbag Systems Company Limited
• Inventors: Kaneko, Hideyuki, Ishizuka, Hideki, Takeuchi, Kunihiro
• Primary Examiner(s): Focarino, Margaret A.
• Assistant Examiner(s): ENGLISH, PETER C
• Application Number:
  US08/026,419
• Time in Patent Office: 530 Days
• Field of Search: 280/735, 280/734, 280/806, 280/728 R, 180/268, 307/10.1, 364/424.05
• US Class Current: 280/735
• CPC Class Codes: B60R 21/01546 using belt buckle sensors

Abstract

In a control apparatus that activates a preloader device and after a timing delay an air bag device when a vehicle collision is detected, the apparatus has a detector for detecting whether or not a seatbelt is buckled, and a timing signal for activating the air bag device is generated without the timing delay if the seatbelt is not buckled, whereby the air bag device can be activated with a timing appropriate to the condition present at the time.

Claims

1. A vehicle safety device control apparatus comprising means for activating a preloader safety device at a first timing when a vehicle collision is detected, means for activating an air bag safety device at a second timing following said first timing, detecting means for detecting whether or not a seatbelt is buckled, and signal output means that, when a vehicle collision is detected and the detecting means detects that the seatbelt is not buckled, outputs a timing signal for activating the air bag safety device at a timing earlier than said second timing.

2. A control apparatus according to claim 1 further comprising an integrating means for outputting a voltage signal indicating the changing status of vehicle speed when the vehicle is in a collision.

3. A control apparatus according to claim 1 further comprising sensor means for detecting vehicle acceleration, and integrating means for carrying out integration processing of output from the sensor means for vehicle collision detection;

wherein said signal output means comprises determining means comprising first discriminating means for discriminating between whether or not a level of an output from the integrating means has reached a prescribed first reference level, second discriminating means for discriminating between whether or not an output level from the integrating means has reached a prescribed second reference level wherein the time required to reach the prescribed second reference level is longer than the time required to reach the prescribed first reference level, and selecting means which sets an activation timing for the vehicle safety devices that is based on an output of the first discriminating means when the detecting means detects that the seatbelt is not buckled and which sets an activation timing for the vehicle safety devices that is based on an output of the second discriminating means when the detecting means detects that the seatbelt is buckled.

4. A control apparatus according to claim 3, in which, in response to the detecting means, the selecting means selects either the output from the first discriminating means or the output from the second discriminating means and applies the output to the signal output means as the output of the determining means.

5. A control apparatus according to claim 3, wherein said signal output means further comprises means for activating the preloader safety device at the time required by the first discriminating means.

6. A control apparatus according to claim 1 further comprising sensor means for detecting vehicle acceleration, and integrating means for carrying out integration processing of output from the sensor means for vehicle collision detection;

wherein said signal output means comprises determining means for determining activation timing for the vehicle safety devices in response to whether or not the seatbelt is buckled by discriminating between whether or not a level of an output from the integrating means has attained a prescribed level established in accordance with an output from the detecting means indicating whether or not the seatbelt is buckled; and

wherein the signal output means supplies an ignition current to an ignition element of each of the vehicle safety devices in response to an output from the determining means.

7. An control apparatus according to claim 1, wherein said earlier timing is said first timing.