Initiator assembly with connector interface element

• US 5,178,547 A
• Filed: 09/13/1991
• Issued: 01/12/1993
• Est. Priority Date: 09/13/1991
• Status: Expired due to Term

• Current Assignee: TRW Limited (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: TRW Limited (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Bonas, Andrew B., Pitstick, Brian R.
• Primary Examiner(s): Paumen, Gary F.
• Application Number:
  US07/759,494
• Time in Patent Office: 487 Days
• Field of Search: 280/735, 280/741, 422/164, 422/165, 422/166, 102/530, 102/531, 439/34
• US Class Current: 439/34
• CPC Class Codes: B60R 2021/26029 Ignitors
• CPC Class Codes: B60R 21/01 Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents electrical circuits for transmission of signals between steering wheel and the vehicle itself B60R16/027; for electrically actuating belt retractor locking means B60R22/343
• CPC Class Codes: B60R 21/2644 using only solid reacting substances, e.g. pellets, powder

Abstract

An inflator for inflating a vehicle air bag discharges, when actuated, gas to inflate the air bag. An initiator has a terminal for electrical contact with an electrical connector of the vehicle circuitry. The initiator is actuatable in response to receiving an electrical signal from the connector through the terminal to initiate actuation of the inflator. A latch pin is attached by a body of plastic material to the initiator. The latch pin maintains the connector in electrical contact with the terminal of the initiator. The latch pin is preferably made of a material different from the body of plastic material.

Claims

1. Apparatus for association with an electrical connector and for, when actuated, initiating actuation of an inflator for discharging gas to inflate a vehicle occupant restraint such as an air bag, said apparatus comprising:

an initiator actuatable to initiate actuation of the inflator in response to receiving an electrical signal, said initiator having an electrical terminal for electrical contact with the electrical connector to receive the electrical signal from the electrical connector;

means for supporting said initiator adjacent the inflator;

a body of plastic material attaching said initiator and said means for supporting to each other; and

a separate interface element for maintaining the electrical connector in electrical contact with said terminal, said body of plastic material having a portion attaching said interface element to said initiator.

2. Apparatus as defined in claim 1 wherein said interface element has an axially inwardly disposed head portion engaged by said body of plastic material and an axially outwardly disposed leg portion free of engagement with said body of plastic material and for engagement with the electrical connector.

3. Apparatus as defined in claim 2 wherein the interface element includes surface means for defining at least one axially extending opening in said interface element, said leg portion of said interface element comprising first and second spaced legs for receiving the connector between them, said terminal extending through said opening and having a portion disposed between said first and second legs for electrical contact with said connector.

4. Apparatus as defined in claim 1 wherein said interface element has a portion in abutting engagement with said means for supporting for blocking movement of said means for supporting in a direction away from said initiator.

5. Apparatus as defined in claim 1 wherein said interface element includes means for maintaining said initiator in position relative to said means for supporting.

6. Apparatus as defined in claim 1 wherein the inflator comprises an inflator housing, said means for supporting said initiator securing said initiator to said housing.

7. Apparatus as defined in claim 6 wherein said means for supporting comprises a metal adaptor welded to said housing.

8. Apparatus as defined in claim 1 wherein said interface element is made from an injection molded polyphenylene sulfide resin.

9. Apparatus for association with an electrical connector and for, when actuated, initiating actuation of an inflator for discharging gas to inflate a vehicle occupant restraint such as an air bag, said apparatus comprising:

an initiator actuatable to initiate actuation of the inflator in response to receiving an electrical signal, said initiator having an electrical terminal for electrical contact with the electrical connector to receive the electrical signal from the electrical connector;

means for supporting said initiator adjacent the inflator;

a body of plastic material attaching said initiator and said means for supporting to each other;

an interface element for maintaining the electrical connector in electrical contact with said terminal, said interface element being made of a material different from said body of plastic material; and

means for attaching said interface element to said initiator.

10. Apparatus as defined in claim 9 wherein said means for attaching said interface element to said initiator comprises said body of plastic material.

11. Apparatus as defined in claim 10 wherein said interface element is made from a polyphenylene sulfide resin and said body of plastic material is made from nylon.

12. Apparatus as defined in claim 10 wherein said interface element has an axially inwardly disposed head portion engaged by said body of plastic material, an axially outwardly disposed leg portion free of engagement with said body of plastic material and for engagement with the electrical connector, and an intermediate body portion in abutting engagement with said means for supporting, said interface element comprising surface means for defining at least one opening in said interface element, said leg portion of said interface element comprising first and second spaced legs for receiving the connector between them, said terminal extending through said opening and having a portion disposed between said first and second legs.

13. An apparatus as defined in claim 9 wherein said body of plastic material is injection molded.

14. An apparatus as defined in claim 9 wherein said body of plastic material is an epoxy adhesive.