Shock detecting system
First Claim
1. A sensor for detecting shocks, comprising:
- an elongated switch containing contacts that are closed by applying a magnetic force to put the switch in an on state and opened by removing the magnetic force to put the switch in an off state;
a movable member having a magnet for applying the magnetic force, said movable member being movable along the longitudinal axis of the switch, between a first position at a first end of the switch corresponding to the off state, and a second position at a second opposite end of the switch corresponding to the on state, said movable member moving along said switch from the first position to the second position as a result of an application of a shock to the sensor in the longitudinal direction;
an elastic member which normally biases said movable member into the first position; and
means, connected to the moveable means, for increasing the kinetic energy of the movable member and prolonging the period that said movable member is in the on state.
1 Assignment
0 Petitions
Accused Products
Abstract
A shock sensor including a switch turned on by magnetic force. The switch includes a reed switch, a magnet sliding back and forth along a case for the reed switch, and a coil spring biasing the magnet in a particular direction. When the sensor receives a shock, the biased magnet moves along the switch case, the magnetic force applied to the reed switch increases and when this magnetic force exceeds a predetermined amount, contact portions of the reed switch are closed and the switch is in the on state. Further, a weight forming an integral part of the magnet is used to increase the kinetic energy of the magnet or, between the coil spring and the switch case, there is a slack which enables movement of the coil spring in the direction of its diameter, either structure allowing the magnet to stay in the on state longer than a conventional switch.
22 Citations
18 Claims
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1. A sensor for detecting shocks, comprising:
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an elongated switch containing contacts that are closed by applying a magnetic force to put the switch in an on state and opened by removing the magnetic force to put the switch in an off state; a movable member having a magnet for applying the magnetic force, said movable member being movable along the longitudinal axis of the switch, between a first position at a first end of the switch corresponding to the off state, and a second position at a second opposite end of the switch corresponding to the on state, said movable member moving along said switch from the first position to the second position as a result of an application of a shock to the sensor in the longitudinal direction; an elastic member which normally biases said movable member into the first position; and means, connected to the moveable means, for increasing the kinetic energy of the movable member and prolonging the period that said movable member is in the on state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A passenger protection safety system applied to a vehicle, comprising:
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a passenger protective device operating by the influence of a shock applied to the device; a sensor for detecting said shock, said sensor including an elongated switch containing contacts that are closed by applying a magnetic force to put the switch in an on state and opened by removing the magnetic force to put the switch in an off state; a movable member having a magnet for applying the magnetic force, said movable member being movable along the longitudinal axis of the switch, between a first position at a first end of the switch corresponding to the off state, and a second position at a second opposite end of the switch corresponding to the on state, said movable member moving along said switch from the first position to the second position as a result of an application of the shock to the sensor in the longitudinal direction; an elastic member which normally biases said movable member into the first position; and means, connected to the moveable means, for increasing the kinetic energy of the movable member and prolonging the period that said movable member is in the on state; wherein the period that said movable member remains in the first position when the shock is applied to the vehicle is prolonged. - View Dependent Claims (17, 18)
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Specification