Patent ID: 8695211

Claim:
A manufacturing method of a push-button switch, comprising: a preparation step of preparing a key top, a pressing element that is attached to a back surface of the key top, and a reinforcing plate having a plate through hole that is larger than an outer periphery of the pressing element; a pressing-element insertion step of inserting one end in an axial direction of the pressing element into a lower-mold recess for the pressing element, which is provided in a surface of a lower mold; a reinforcing plate placing step of placing the reinforcing plate in the lower mold so that the pressing element extends through the plate through hole of the reinforcing plate; a mold clamping step of moving an upper mold and the lower mold toward each other so as to insert the other end of the pressing element into an upper-mold recess for the pressing element, which is provided in a lower surface of the upper mold; an introducing step of introducing an elastic member, which contains a component that does not adhere to the upper and lower molds but adheres to the pressing element, into a cavity formed between the upper and lower molds; a molding step of, after the introducing step, pressing and holding the upper and lower molds at a predetermined temperature for a predetermined time, and then opening the upper and lower molds to remove a molded product in which an intermediate portion in the axial direction of the pressing element is supported in the plate through hole by the elastic member; and an attaching step of attaching the back surface of the key top to the one end of the pressing element in the molded product.