Vehicle seat load detection device
First Claim
1. A vehicle seat load detection device for detecting a load applied to a vehicle seat having a non-bendable fixed member irrespective of the existence/nonexistence of the load and a flexible member displaceable relative to the fixed member by being bent under the applied load, through the amount of bending of the flexible member, the vehicle seat load detection device comprising:
- a magnetism generator which generates a magnetic field provided on one side of the fixed member and the flexible member, and a magnetic sensor having a magnetic impedance element provided on the other side to detect the magnetic field generated by the magnetism generator,wherein the flexible member is bent by an amount corresponding to the load applied to the vehicle seat to change the distance between the magnetism generator and the magnetic sensor and to thereby change the magnetic field generated by the magnetism generator, and the load applied to the vehicle seat is detected on the basis of the detected change of the magnetic field.
1 Assignment
0 Petitions
Accused Products
Abstract
A magnet is attached to springs of a sheet cushion. A connecting member is attached to side portions of a seat cushion frame. A magnetic sensor having a magnetic impedance element is fixed on the connecting member while being positioned right below the magnet. By seating of an occupant on the seat cushion, springs are downwardly bent to bring the magnet closer to the magnetic sensor and to thereby change the magnetic field of the magnet detected with the magnetic sensor. The load applied by an occupant to the seat cushion is detected on the basis of the change of the magnetic field.
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Citations
3 Claims
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1. A vehicle seat load detection device for detecting a load applied to a vehicle seat having a non-bendable fixed member irrespective of the existence/nonexistence of the load and a flexible member displaceable relative to the fixed member by being bent under the applied load, through the amount of bending of the flexible member, the vehicle seat load detection device comprising:
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a magnetism generator which generates a magnetic field provided on one side of the fixed member and the flexible member, and a magnetic sensor having a magnetic impedance element provided on the other side to detect the magnetic field generated by the magnetism generator, wherein the flexible member is bent by an amount corresponding to the load applied to the vehicle seat to change the distance between the magnetism generator and the magnetic sensor and to thereby change the magnetic field generated by the magnetism generator, and the load applied to the vehicle seat is detected on the basis of the detected change of the magnetic field. - View Dependent Claims (2, 3)
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Specification