Safing velocity change sensor
First Claim
Patent Images
1. An acceleration sensor comprising;
- a housing formed of a first wall and a second wall, said first wall having a peripheral flange, said second wall being attached to said peripheral flange, said housing further including a fixed retainer member attached to an end of said first wall to define a first chamber with said first wall and a second chamber with said second wall;
sensing means disposed in said first chamber for sensing acceleration by moving from a first to a second position;
electrical circuit means disposed in said first chamber for sensing when said sensing means is in one of said first and second positions;
a circuit board disposed in said second chamber and coupled electrically to said electrical circuit means; and
electrical connection means extending into said housing for connection to said circuit board.
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Abstract
A safing sensor for sensing velocity changes particularly suited for passenger restraint systems in a motor vehicle for the deployment of an air bag includes a housing with contact blades and an inertial element. The movement of the inertial element is substantially undamped within the housing. Preferably, the sensor includes mounting tabs for mounting said housing on a printed circuit board.
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Citations
12 Claims
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1. An acceleration sensor comprising;
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a housing formed of a first wall and a second wall, said first wall having a peripheral flange, said second wall being attached to said peripheral flange, said housing further including a fixed retainer member attached to an end of said first wall to define a first chamber with said first wall and a second chamber with said second wall; sensing means disposed in said first chamber for sensing acceleration by moving from a first to a second position; electrical circuit means disposed in said first chamber for sensing when said sensing means is in one of said first and second positions; a circuit board disposed in said second chamber and coupled electrically to said electrical circuit means; and electrical connection means extending into said housing for connection to said circuit board. - View Dependent Claims (2, 3, 11)
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4. An acceleration sensor comprising;
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a housing consisting of a first housing member having a peripheral flange and a first housing member end, and a second housing member attached to said flange and cooperating with said first housing member to define a housing interior; a retainer member affixed to said first housing member end to partition said housing interior into a first and a second chamber; a plurality of blades mounted on said retainer member and extending into said first chamber; a mass disposed in said first chamber along a path of travel; biasing means for biasing said mass toward a first position, said mass being arranged to move along said path of travel to a second position for establishing an electrical path through said blades in response to an acceleration; and a printed circuit board with printed circuit elements disposed in said second chamber, said blades being connected to said printed circuit board. - View Dependent Claims (5, 6, 7, 8, 9, 10, 12)
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Specification