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US 2010/0148997 A1Published application
Key switch
AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.
InventorsHUAN-TING XU, DUO LIU
Life of this patent
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Abstract
A key switch can generate several signals is provided. The key switch includes a key top, a body, a first electronic circuit, a second electronic circuit, and a switch mechanism. Pressing the key top, the switch key generates a first signal while the first electronic circuit is closed by the switch mechanism; the switch key generates a second signal while the second electronic circuit is closed; and the switch key generates a third signal while both the first electronic circuit and the second electronic circuit is closed.
Claims7
A key switch comprising:
- a key top;
- a body having a support plate;
- a first electronic circuit having two first contact sections;
- a second electronic circuit having two second contact sections;
- and
- a switch mechanism mounted under the key top and supported by the body, for contacting an electronic circuits in accordance with a vertical (upward-and-downward) movement of the key top, wherein the switch mechanism comprises:
- a first metal sheet;
- a first elastic element;
- a second metal sheet;
- and
- a second elastic element;
- wherein the first metal sheet and the second metal sheet are connected to opposite ends of the first elastic element respectively, the first metal sheet is mounted under the key top, one end of the second elastic element is connected to the second metal sheet, and another end of the second elastic element is connected to an upper surface of the support plate.
9 more elements
Dependencies are inferred from the claim text.