Sensor element device for a capacitive contact switch with an electrically conductive body and method for the manufacture of such a body
First Claim
1. A sensor element device for a capacitive contact switch, said sensor element device comprising a three-dimensional shape-variable, elastic, compressible body,wherein said body is at least zonally electrically conductive,wherein said sensor element device has an electrical contact zone for contact to a control and a sensor element surface,wherein said body extends from said electrical contact zone to said sensor element surface and has different areas,wherein one of said areas is a conductive area being electrically conductive throughout between said electrical contact zone and said sensor element surface, and another of said areas is an insulating area not being electrically conductive,wherein there is at least one said insulating area between several of said conductive areas;
- andwherein an insulating area forms a dielectric between two of said conductive areas in such a way that transverse capacitances or capacitive connections are formed between the said conductive areas.
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Accused Products
Abstract
According to an embodiment of the invention, a sensor element device for a capacitive contact switch can be formed from a foam body with several portions. There are electrically conductive areas with a sensor element surface and an electrical contact face, as well as insulating areas. The sensor element surfaces engage from below on a glass ceramic plate. The areas can be interconnected in cylindrically elongated and juxtaposed manner. This leads to a type of strand material from which with the predetermined spacing it is possible to produce juxtaposed, capacitive sensor elements as parts of contact switches.
23 Citations
40 Claims
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1. A sensor element device for a capacitive contact switch, said sensor element device comprising a three-dimensional shape-variable, elastic, compressible body,
wherein said body is at least zonally electrically conductive, wherein said sensor element device has an electrical contact zone for contact to a control and a sensor element surface, wherein said body extends from said electrical contact zone to said sensor element surface and has different areas, wherein one of said areas is a conductive area being electrically conductive throughout between said electrical contact zone and said sensor element surface, and another of said areas is an insulating area not being electrically conductive, wherein there is at least one said insulating area between several of said conductive areas; - and
wherein an insulating area forms a dielectric between two of said conductive areas in such a way that transverse capacitances or capacitive connections are formed between the said conductive areas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A sensor element device for a capacitive contact switch, the sensor element device comprising a three-dimensional shape-variable, elastic, compressible body,
wherein said body is at least zonally electrically conductive, wherein said sensor element device has an electrical contact zone for contact to a control and a sensor element surface, wherein said body extends from said electrical contact zone to said sensor element surface and has different areas, wherein one of said areas is a conductive area being electrically conductive throughout between said electrical contact zone and said sensor element surface, and another of said areas is an insulating area not being electrically conductive, wherein there is at least one said insulating area between several of said conductive areas, and wherein a sensor element surface is located on the underside of a non-flexible and electrically isolating plate.
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40. A sensor element device for a capacitive contact switch, the sensor element device comprising a three-dimensional shape-variable, elastic, compressible body,
wherein said body is at least zonally electrically conductive, wherein said sensor element device has an electrical contact zone for contact to a control and a sensor element surface, wherein said body extends from said electrical contact zone to said sensor element surface and has different areas, wherein one of said areas is a conductive area being electrically conductive throughout between said electrical contact zone and said sensor element surface, and another of said areas is an insulating area not being electrically conductive, wherein there is at least one said insulating area between several of said conductive areas, and wherein one of said conductive areas is provided on a side directed towards said electrical contact zone with an insulating coating, said electrical contact zone having elongated and upwardly projecting contact pins pushing through said insulating coating in said conductive area in order to produce said electrical contact zone.
Specification