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Membrane switch

  • US 7,211,760 B2
  • Filed: 12/06/2005
  • Issued: 05/01/2007
  • Est. Priority Date: 12/21/2004
  • Status: Expired due to Fees
First Claim
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1. A membrane switch comprising:

  • a first sheet;

    at least one fixed contact point provided on a surface of said first sheet;

    a second sheet opposed to said first sheet;

    a spacer which is provided between the first sheet and the second sheet, and which has a hole that exposes the fixed contact point;

    at least one flexible movable contact point which;

    (i) is provided on a surface of said second sheet so as to be located entirely within the hole and so as to be opposed to said fixed contact point via a space, (ii) is movable toward and away from said fixed contact point, and (iii) includes a push portion which is pushed to contact said fixed contact point; and

    at least one insulator provided at one of;

    (i) on said at least one flexible movable contact point at a location that does not overlap with said push portion of said flexible movable contact point, and (ii) on said at least one fixed contact point at a location opposed to said location that does not overlap with said push portion, wherein no insulator is provided in a location coinciding with said push portion.

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