Button switch

Abstract

The present invent provides a structure of a push-button switch wherein reduction of material can be obtained through reduction of a material width by changing the bonding bar of a hoop-shaped terminal material into an inner bar and wherein influences of heat and flux at the time of soldering can be reduced. This switch is provided with a resin made housing 1 having a housing part 1a, fixed contact points 2a, 2b wherein a flat metal terminal material is embedded in the bottom part of the housing 1 and wherein one part is protruded and formed in an inner-bottom face of the housing part 1a, a movable contact point 4 capable of contacting and separating from these fixed contact points 2a, 2b, and outer terminals 3a, 3b jointed in succession with the fixed contact points 2a, 2b and led out outward from the side face of the housing 1. A through hole 3d is formed in the terminal material, the terminal material is embedded in the bottom part of the housing 1 by communicating with the resin of the top and bottom faces via this through hole 3d, and the outer terminals 3a, 3b are led out from the side face of the housing 1 onto the same plane as the embedded terminal material.

Description

technical field [0001] The present invention relates to a push button switch which turns the dome-shaped movable contact in reverse by pressing, especially relates to the structure of the small push button switch used in portable electronic equipment and the like. Background technique [0002] The structure of the past pushbutton switch is shown in Figure 5-7 . Figure 5 is the profile view of the button switch; Figure 6 7 is a plan view of the ring-shaped terminal member; 7 is a plan view of the state in which the ring-shaped terminal member is buried in the case. [0003] The past button switch, its components are: [0004] a square housing 11, which has a housing; [0005] a central fixed contact 12a and peripheral fixed contacts 12b, which are arranged in the housing portion of the housing 11; [0006] External terminals 13a, 13b, which are connected to the central fixed contact 12a and the surrounding fixed contacts 12b, are drawn out from the side of the housing ...

AI Technical Summary

Problems solved by technology

However, there is a problem that the wall thickness of the housing 11 under the terminal part is thinned, and the fluidity of the resin is not good during molding, so it cannot be molded.

[0018] And, when the switch is soldered, there may be such a problem: the heat added to the above-mentioned external terminals 13a, 13b is transmitted to the terminal parts, and is easily added to the above-mentioned central fixed contact 12a and the surrounding fixed contacts 12b, making the surrounding fixed contacts Melting, changing the contact position, or deforming the cover plate 15

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