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Key switching structure

A switch structure and key technology, applied in electrical switches, electrical components, circuits, etc., can solve the problem of inability to perform key input, and achieve the effect of reliable key input

Inactive Publication Date: 2006-02-01
OKI ELECTRIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, if the key is not pressed hard, or if the center of the key is not pressed, the key input cannot be performed.

Method used

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Experimental program
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Embodiment Construction

[0021] Hereinafter, modes for implementing the present invention will be described with reference to the drawings. figure 1 It is a side view showing the push switch according to the first embodiment of the present invention. exist figure 1 Among them, the key switch 11 of the first embodiment includes: a key head 2 , a rubber cup 3 , a pair of link mechanisms 4 and 5 , a diaphragm 6 and a reinforcing plate 7 . The link mechanism 4 is composed of link members 4a, 4b swingably formed in an X-shape in side view by means of a support shaft 4c, brackets 4d, 4e formed under the key head 2, and a bracket 4f formed on the diaphragm 6 side. constituted. The link member 4 a and the link member 4 b each have a rectangular frame shape, and a substantially circular space is formed in the center in a state of being connected by a support shaft 4 c.

[0022] Another link mechanism 5 is also formed by the link members 5a, 5b swingably formed in an X shape by means of the support shaft 5...

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Abstract

The present invention provides a key switch structure which assures key input even if an edge of a key top is pressed. Projections 12 and 13 are formed in an edge of a key top 2 and contact parts 14 and 15 are prepared in positions opposed to the projections 12 and 13, respectively. A contact part 8 is formed at the center of a membrane sheet 6. The contact parts 14, 15 and the contact part 8 are connected one another at a pattern part so that key input is performed even when either of them is pressed. When an edge of the key top 2 is pressed, a contact part 14 or 15 is closed by a projection 12 or 13.

Description

technical field [0001] The present invention relates to the structure of a key switch used in a keyboard device, particularly a thin key switch structure used in a notebook type personal computer or the like. Background technique [0002] Conventionally, among key switches used in keyboard devices, there is known a key switch in which key heads are vertically movably supported by a link mechanism in which a pair of link members are arranged in an X shape in a side view. As an example, a key switch disclosed in Japanese Patent Application Laid-Open No. 11-339587 can be mentioned. [0003] The example shown in the above-mentioned publication uses only one link mechanism, but among large keys, a key in which the link mechanism is provided at two places has been developed. It is described with accompanying drawing below. [0004] Figure 7 It is a side view showing the structure of a conventional push switch. exist Figure 7 Among them, the conventional key switch 1 has a key...

Claims

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Application Information

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IPC IPC(8): H01H13/702
Inventor 山田茂千叶俊美
Owner OKI ELECTRIC IND CO LTD
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