Mechanical pressure detecting device

Details Mechanical pressure detecting device Mechanical pressure detecting device

G - Physics

01

P

280/221, 73/69,

G01P 15/00 (2006.01) B60R 21/01 (2006.01) G06K 17/00 (2006.01) H01H 35/14 (2006.01)

Patent

CA 1040726

ABSTRACT OF THE DISCLOSURE A mechanical pressure or collision detecting device is herein proposed, for being advantageously used in combina- tion with a known deceleration detector or an inertia- responsive switch in a vehicular safety arrangement which is adapted to protect a vehicle occupant from incurring an injury in the event of a collision of the motor vehicle. The deceleration detector is adapted to rapidly detecting the collision condition while the mechanical pressure de- tecting device is adapted to hold the safety arrangement in an inoperative condition if the shocks or collisions encountered by the motor vehicle are of the nature which is unlikely to invite a serious danger to the vehicle occupant. The mechanical pressure detecting device includes electrically conductive, mechanically deformable or rupturable means which may be either kept conducting under a normal condition or rendered conducting only when the collision is encounter- ed by the motor vehicle. A method which is useful for mounting the mechanical pressure detecting device on a body structure of the motor vehicle is also desclosed. The collision detecting device, on the other hand, may include extensible structures having pressure sensing means attached at their leading ends and capable of protruding outwardly of the vehicle body in accordance with the driving speed of the motor vehicle. The collision detecting device may otherwise include switch means responsive to the initial collision condition, first switch means which is responsive to acceleration greater than a predetermined magnitude and second switch means to be actuated in accordance with a predetermined timing signal.

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