Key switching structure

Abstract

The present invention provides a key switch capable of reliably performing key input even when an end portion of a key head is depressed. Wherein, protruding parts (12, 13) are formed at the ends of the key head (2), and contact parts (14, 15) are provided at positions opposite to the protruding parts (12, 13). A contact part (8) is formed at the center of the diaphragm (6). The pattern parts are connected to each other so that key input can be performed regardless of whether any one of the contact parts (14, 15) and the contact part (8) is depressed. With the end of the key head (2) depressed, the contact part (14 or 15) is closed by means of the protrusion (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...

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.

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