Abstract: There is provided a technology making it possible to improve operability and reliability of a detection sensor.

Abstract: In a push-button switch manufacturing method, a key-top end of a pressing element is inserted into a lower-mold recess. A reinforcing plate is placed in the lower mold so that the pressing element extends through a plate through hole of the reinforcing plate. An upper mold and the lower mold are moved 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. A liquid silicone rubber, which contains a component that does not adhere to the upper and lower molds but adheres to the pressing element, is introduced into a cavity, the upper and lower molds are opened to remove a molded product in which an intermediate portion in an axial direction of the pressing element is supported in the plate through hole by the silicone rubber.

Abstract: In a manufacturing method of a push-button switch, a key-top end of a pressing element 25 is inserted into a lower-mold recess for the pressing element, which is provided in a surface of a lower mold. A reinforcing plate 28 is placed in the lower mold so that the pressing element 25 extends through a plate through hole of the reinforcing plate 28. An upper mold and the lower mold are moved toward each other so as to insert the other end of the pressing element 25 into an upper-mold recess for the pressing element, which is provided in a lower surface of the upper mold. A liquid silicone rubber 27, which contains a component that does not adhere to the upper and lower molds but adheres to the pressing element 25, is introduced into a cavity.

Abstract: A cover member for a push bottom switch having excellent adhesiveness, durabilities for long-term usage, and humidity resistance and manufacturing the same. The cover member for push button switch comprises a resin key top, a silicone rubber key sheet integrated with the resin key top, and an adhesive layer that bonds the silicone rubber key sheet with the resin key top and includes an optical curing resin, an amine silane compound and a hydrophobic silane compound. In the cover member for push button switch, the area of the adhesive layer becomes one third or more of the adhesive layer areas of the resin key top and the silicone rubber key sheet.