| 摘要 |
A sensor for actuating a vehicle warning signal includes a housing, a magnetically activated switch on an outside surface of the housing, and an electrical connection connecting the switch to a warning signaling device. The housing includes a cavity, at least one spring inside the cavity, and a moveable magnetic weight element adjacent the spring. In a first condition the weight element is located in a first resting, non-activating position remote from said switch, and in a second condition, during a deceleration of the vehicle, the weight element moves to compress the spring so that the weight element moves from the first position to a second activating position proximate the switch so that the switch is closed by magnetic interaction with the weight element, the closing of the switch causing the warning signaling device to be activated to provide a warning to following vehicles.
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