Snap action push button switch

Abstract

A push-button switch affording a clear click feeling, comprising a contact plate which is curved in one direction and which is formed into a movable contact by providing therein two substantially parallel slits extending in a perimetric direction, forming a movable contact portion between said two slits, and curving both side edges of said contact plate along said slits oppositely to the direction of the curvature of said movable contact portion so as to form normally-contacted contact portion; a switch body which includes first stationary contacts and a second stationary contact; and a push button; said normally-contacted contact portions of said contact plate being normally held in electrical contact with said first stationary contacts of said switch body, while said movable contact portion of said contact plate is depressed and deformed oppositely to the direction of the curvature thereof by said push button, thereby to come into electrical contact with said second stationary contact of said switch body; said contact plate including both-end joint portions which join said movable contact portion and said normally-contacted contact portions integrally, a pair of bent line portions being formed between said each joint portion and said normally-contacted contact portions, said each bent line portion defining an acute angle with respect to the slit.

Dependencies are inferred from the claim text.