A button switch

Abstract

Provided is a button switch capable of reliably operating even when pressed in an inclined manner. The button switch comprises a movable contact component, a housing, and a sheet. The movable contact component comprises a bulge portion in a dome shape. The housing comprises an accommodating portion for accommodating the movable contact component and a fixed contact component capable of contacting the movable contact component. The sheet is pasted on a side of the top surface of the housing and comprises a pressing member pressed from an outer side. The structure of the button switch is configured in a manner that in a top view observing the housing of the button switch from top, the appearance shape of the housing is approximately a rectangle; that in the extending direction of at least one group of groups formed by every two oppositely-arranged sides of four sides forming the appearance shape of the housing, at least a part of the top surface of the housing forms a state that the height of the two end portions of the housing from the bottom surface to the top surface of the housing is lower than that of the central part of the housing.

Description

technical field [0001] The present invention relates to a key switch, and in particular, to a key switch capable of reliable operation even when pressed obliquely. Background technique [0002] Recently, there have been push switches operated by pressing members. In the case of using the pressing member for operation, sometimes the pressing member is inclined due to different pressing methods, forming an oblique pressing. Therefore, there is a need for a key switch that can be reliably operated even when the pressing member is pressed obliquely. [0003] As a known push switch, there is a push switch 900 described in Patent Document 1 below. Use below Figure 7 to Figure 9 The key switch described in Patent Document 1 will be described. Figure 7 It is an exploded perspective view showing the structure of the key switch 900 described in Patent Document 1. FIG. Figure 8 It is a sectional view showing the structure of the key switch 900 described in Patent Document 1. FIG...

AI Technical Summary

Problems solved by technology

However, when the protrusion li and the pusher 900a are viewed from a plan view, for example, if the area of ​​the protrusion li of the pressing member pp is larger than the area of ​​the pusher 950a of the key switch 900, when the vicinity of the periphery of the protrusion li is pressed, The pressing member pp tilts with the peripheral portion of the pressing member 950a as a fulcrum.

Assuming that the pressing part pp is operated in a tilted state, then as Figure 9 As shown in (a), it is difficult for the pressing part pp and the key switch 900 to come into contact with the position other than the pressing part 950a at the part of the upper surface of the key switch 900 in the plane direction with a small size; Figure 9 As shown in (b), at the portion with a large size in the planar direction of the upper surface of the key switch 900, the pressing part pp will come into contact with the position other than the pressing part 950a of the key switch 900 before the operation of the key switch 900 is completed. , which can make it difficult and sometimes impossible to complete the operation

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