Patent ID: 8513556
Filing Date: 2013-08-20
Classification: H01H

Abstract:
1. A push switch comprising: a soft internal button which includes a side wall and an upper wall and has an opening portion formed in a lower surface thereof; an external button which is formed of a hard material, which includes a side circumferential wall and an upper operation wall, and which is fixed to the internal button so as to cover the internal button; a switch substrate which is disposed in the opening portion of the internal button; a switch which is disposed on the switch substrate and inside the internal button; a casing which is fixed to the side wall of the internal button; a groove portion which is formed in an outer circumference of the side wall of the internal button; an inner collar portion which is provided in the casing and engaged with the groove portion of the internal button; an overhanging portion which is formed in the external button and which includes a substantially flat pressing surface provided in an end portion of the side circumferential wall; and an outer collar portion which is formed in the internal button and which is located between the overhanging portion and the inner collar portion and adjacently to the inner collar portion and defines a part of the groove portion, wherein the overhanging portion is disposed oppositely to the inner collar portion, wherein the overhanging portion is disposed separately from the outer collar portion by a gap, and wherein the overhanging portion abuts against the outer collar portion when the external button is pushed to elastically deform the internal button to thereby turn on the switch.