초록 ▼

A crash detector is provided for controlling actuation of an actuator such as a release mechanism for seat belts, an air bag or the like. A main body such as a ball is located in a bore in a housing and retained by a first, relatively weak spring. A firing pin having a portion for actuating the actu

A crash detector is provided for controlling actuation of an actuator such as a release mechanism for seat belts, an air bag or the like. A main body such as a ball is located in a bore in a housing and retained by a first, relatively weak spring. A firing pin having a portion for actuating the actuator is axially movable in the housing bore. A second spring biases the firing pin towards an inoperative position. The firing pin is moved to an actuating position when the deceleration force acting on the vehicle, and hence the mass body, exceeds a predetermined magnitude.

대표청구항 ▼

Crash detector for actuating an actuator of an operating system of a movable vehicle when a deceleration force acting on the vehicle exceeds a predetermined magnitude, the vehicle being movable in a predetermined direction of movement and having leading and trailing ends, said crash detector compris

Crash detector for actuating an actuator of an operating system of a movable vehicle when a deceleration force acting on the vehicle exceeds a predetermined magnitude, the vehicle being movable in a predetermined direction of movement and having leading and trailing ends, said crash detector comprising: a longitudinally extending housing adapted to be mounted on the vehicle and defining a bore having leading and trailing ends facing in the same direction as the leading and trailing ends of the vehicle; a mass body positioned in the rear end of the bore of said housing for axial movement towards the leading end in response to deceleration forces acting on the vehicle; a first spring having a predetermined spring constant and exerting a force on said mass body urging the mass body towards said trailing end; a firing pin axially movable in said bore and positioned in said bore between said mass body and said leading end of said bore and having a portion thereof adapted to actuate said actuator, said portion being spaced a predetermined distance from the actuator; and a second spring having a predetermined spring constant greater than the predetermined spring constant of the first spring and exerting a force on the firing pin urging the firing pin towards said trailing end, said mass body and said firing pin and said first and second springs being interrelated in such manner that when a deceleration force acting on the vehicle exceeds the predetermined magnitude, said mass body moves towards the leading end of the bore againSt the force of said first spring and contacts said firing pin and thereafter moves against the force of said first and second springs, said firing pin being moved said predetermined axial distance by said mass body and the deceleration force.