Rubber stem and switch apparatus
AssigneeAlps Alpine Co., Ltd.
InventorHidetaka Sato
Life of this patent
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Abstract
A rubber stem for use in a switch apparatus having a dome-shaped invertible spring includes an operating portion on which a pressing action is performed, a skirt surrounding the operating portion and configured to be deformed in response to the pressing action performed on the operating portion, a base extending annularly along a lower edge of the skirt and supporting the lower edge of the skirt, and a pressing portion provided on a back side of the operating portion at a position facing a top of the invertible spring and configured to press the top of the invertible spring in response to the pressing action performed on the operating portion, wherein the skirt is formed of a low-hardness elastic material, and at least a part of the rubber stem other than the skirt is formed of a high-hardness elastic material.
Claims9
A rubber stem for use in a switch apparatus having a dome-shaped invertible spring, comprising:
- an operating portion on which a pressing action is performed;
- a skirt surrounding the operating portion and configured to be deformed in response to the pressing action performed on the operating portion;
- a base extending annularly along a lower edge of the skirt and supporting the lower edge of the skirt;
- and
- a pressing portion provided on a back side of the operating portion at a position facing a top of the invertible spring and configured to press the top of the invertible spring in response to the pressing action performed on the operating portion,
- wherein the skirt is formed of a low-hardness elastic material, and at least a part of the rubber stem other than the skirt is formed of a high-hardness elastic material, and
- wherein the base is formed of the high-hardness elastic material.
Dependencies are inferred from the claim text.