Membrane switch
First Claim
Patent Images
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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Accused Products
Abstract
A membrane switch which can be opened and closed with a small pushing load. A fixed contact point 4 is formed on one surface of a first sheet 3. Flexible movable contact points 7 opposed to the fixed contact point 4 via a space in a manner movable to and way from the fixed contact point 4 are formed on one surface of a second sheet 6, opposed to the one surface of the first sheet 3. Insulators are arranged on the flexible movable contact points at locations except for the locations of push portions of the flexible movable contact points 7.
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Citations
18 Claims
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1. A membrane switch comprising:
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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; andat 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A membrane switch comprising:
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a first sheet; a plurality of fixed contact points 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; a 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 plurality of fixed contact points via a space, (ii) is movable toward and away from said fixed contact points, and (iii) includes a plurality of push portions, each of which is adapted to be selectively pushed to contact a corresponding one of said fixed contact points; anda plurality of insulators provided on said fixed contact points at locations that are opposed to locations of said movable contact point that do not overlap with said push portions, wherein no insulator is provided in locations coinciding with said push portions. - View Dependent Claims (16)
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17. A membrane switch comprising:
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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; at least one substantially circular flexible movable contact point which;
(i) is provided on a surface of said second sheet 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; andat least one insulator which is provided on said substantially circular flexible movable contact point around an entire periphery of said flexible movable contact point, and which includes an opening corresponding to said push portion of said flexible movable contact point. - View Dependent Claims (18)
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Specification