Seat weight measuring apparatus
First Claim
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1. A seat weight measuring apparatus for measuring a weight of a vehicle seat including the weight of a passenger sitting thereon, comprising:
- a load sensor that receives at least a part of the seat weight and converts the seat weight into an electrical signal, said load sensor including;
a sensor member which is elastically deformable upon receiving at least a part of the seat weight; and
a strain gauge, for measuring a strain on said sensor member, arranged on a surface of the sensor member, said strain gauge including a lower insulating layer, a wiring layer, a resistor layer, and an upper insulating layer sequentially formed on said sensor member; and
a displacement restriction mechanism for restricting the strain on said sensor member.
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Abstract
A seat weight measuring apparatus capable of reducing the working cost and the assembly cost and improving its heat resistance and its corrosion resistance. A load sensor has a mechanism for receiving at least a part of the seat weight and converting the weight into an electrical signal. A strain gauge of the load sensor includes a lower insulating layer, a wiring layer, a resistor layer, and an upper insulating layer, which are sequentially formed on a sensor member.
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Citations
17 Claims
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1. A seat weight measuring apparatus for measuring a weight of a vehicle seat including the weight of a passenger sitting thereon, comprising:
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a load sensor that receives at least a part of the seat weight and converts the seat weight into an electrical signal, said load sensor including;
a sensor member which is elastically deformable upon receiving at least a part of the seat weight; and
a strain gauge, for measuring a strain on said sensor member, arranged on a surface of the sensor member, said strain gauge including a lower insulating layer, a wiring layer, a resistor layer, and an upper insulating layer sequentially formed on said sensor member; and
a displacement restriction mechanism for restricting the strain on said sensor member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A seat structure for a motor vehicle, comprising:
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a seat including a seat squab and a seat back extending from the seat squab;
seat rails mounted below the seat in a longitudinal direction;
a seat weight measuring apparatus provided below a front and a back of each seat rail, the seat weight measuring apparatus including;
a load sensor that detects a load positioned on the seat and generates an electrical signal in response to the load; and
a deflection member connected to the load sensor that amplifies the electrical signal; and
a displacement restriction mechanism for limiting the load detected by said load sensor.
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Specification