Capacitive occupant sensor
First Claim
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1. A capacitive occupant sensor to detect an occupant seated on a vehicle seat comprising:
- an electrostatic sensor mat arranged inside of the vehicle seat, the mat includinga base member, anda main electrode arranged on the base member so as to detect the occupant based on a capacitance variation of the mat, whereinthe main electrode hasa first electrode disposed on the base member, anda second electrode covering the first electrode, the second electrode being less expensive than the first electrode,the base member includes a plurality of U-shaped U-parts, each of the U-parts havingtwo extending portions approximately linearly extending in a first direction,a bent portion which is defined by bending a part of the extending portions, andan opening which is defined by a part of the base member recessed in the first direction and surrounded by the extending portions and the bent portion,the U-parts located adjacent to each other are connected with each other so as to define an S-shaped S-part, in a manner that the openings alternately open toward a first side of the first direction or a second side of the first direction,the base member is constructed by a plurality of the S-parts, andthe first electrode is located adjacent to the opening when the first electrode is patterned on the bent portion.
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Abstract
A capacitive occupant sensor includes a sensor mat having a base member and a main electrode arranged on the base member. The main electrode has a first electrode, and a second electrode to cover the first electrode. The second electrode is cheaper than the first electrode. The base member is constructed by U-parts, and an opening of the U-part is defined to be surrounded by two extending portions and a bent portion connecting the extending portions. The first electrode is located adjacent to the opening, when the first electrode is patterned on the bent portion.
13 Citations
10 Claims
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1. A capacitive occupant sensor to detect an occupant seated on a vehicle seat comprising:
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an electrostatic sensor mat arranged inside of the vehicle seat, the mat including a base member, and a main electrode arranged on the base member so as to detect the occupant based on a capacitance variation of the mat, wherein the main electrode has a first electrode disposed on the base member, and a second electrode covering the first electrode, the second electrode being less expensive than the first electrode, the base member includes a plurality of U-shaped U-parts, each of the U-parts having two extending portions approximately linearly extending in a first direction, a bent portion which is defined by bending a part of the extending portions, and an opening which is defined by a part of the base member recessed in the first direction and surrounded by the extending portions and the bent portion, the U-parts located adjacent to each other are connected with each other so as to define an S-shaped S-part, in a manner that the openings alternately open toward a first side of the first direction or a second side of the first direction, the base member is constructed by a plurality of the S-parts, and the first electrode is located adjacent to the opening when the first electrode is patterned on the bent portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification