Collision detection device having eccentric mass and inertial ma

Details Collision detection device having eccentric mass and inertial ma Collision detection device having eccentric mass and inertial ma

1997-07-29

2000-07-25

Luebke, Renee

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6148, H01H 3506

Patent

active

060938978

ABSTRACT:
A collision detection device has a weight, which includes an eccentric mass and a metallic plate. The weight is pivoted by a shaft at a position eccentric from the mass barycenter to have a predetermined swing velocity and frequency response. A rotor is fixed to the weight, and contact springs having contacts are provided to exert a resilient force to the weight. When the acceleration caused by the impact of collision acts on the weight, it swings against the spring force, and bounces on a stopper to swing back. The rotor which swings together with the weight causes the contacts on the springs to close at a certain swing angle, producing a collision detection signal. The eccentric mass and the metallic plate may be provided to swing separately from each other depending on the magnitude of acceleration.

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patent: 5477428 (1995-12-01), Brown et al.
patent: 5914470 (1999-06-01), Suzuki et al.
patent: 5920045 (1999-07-01), Suzuki et al.

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