Key sheet
First Claim
1. A key sheet, comprising:
- a key top having a surface portion exposed through an operational opening formed in a casing of an apparatus, and a fixation protrusion protruding from a center of a bottom surface of the surface portion; and
a base sheet which is formed of a rubber-like elastic material and which is equipped with a movable membrane, to which the fixation protrusion is fixed and which float-supports the key top to allow displacement of the key top through depression, and a support leg placed on a board, further comprising a stopper plate having an opening through which the fixation protrusion of the key top is passed and whose edge faces a side of the fixation protrusion, wherein, at a time of sidewise movement of the key top, the stopper plate abuts the key top to regulate the sidewise movement of the key top.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a stable key sheet in which, even if a key top is operated so as to be shifted sidewise, no excessive change, such as great tottering of the key top or overlapping of key tops each other, is caused. A key sheet including: a key top having a fixation protrusion protruding from a center of a bottom surface; and a base sheet to which the fixation protrusion is fixed, further includes a stopper plate having an opening through which the fixation protrusion of the key top is passed and whose edge faces a side of the fixation protrusion, in which, at a time of sidewise movement of the key top, the stopper plate abuts the key top to regulate the sidewise movement of the key top.
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Citations
24 Claims
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1. A key sheet, comprising:
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a key top having a surface portion exposed through an operational opening formed in a casing of an apparatus, and a fixation protrusion protruding from a center of a bottom surface of the surface portion; and
a base sheet which is formed of a rubber-like elastic material and which is equipped with a movable membrane, to which the fixation protrusion is fixed and which float-supports the key top to allow displacement of the key top through depression, and a support leg placed on a board, further comprising a stopper plate having an opening through which the fixation protrusion of the key top is passed and whose edge faces a side of the fixation protrusion, wherein, at a time of sidewise movement of the key top, the stopper plate abuts the key top to regulate the sidewise movement of the key top. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A key sheet, comprising:
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a key top exposed through an operational opening (101b) formed in a casing of an apparatus; and
a base sheet which is formed of a rubber-like elastic material and which is equipped with a fixation protrusion protruding from a surface and fixed to the key top, a movable membrane float-supporting the key top to allow displacement of the key top through depression, and a support leg placed on a board, further comprising a stopper plate having an opening through which the fixation protrusion of the base sheet is passed and whose edge faces a side of the fixation protrusion, wherein, at a time of sidewise movement of the key top, the stopper plate abuts the fixation protrusion to regulate the sidewise movement of the key top. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification