Patent ID: 7884295
Filing Date: 2011-02-08
Classification: H01H

Abstract:
1. A push-button switch cover member comprising: a double-layered elastic keypad having an upper side and a lower side, and comprising a silicone rubber layer having a backside and an organic resin layer that adheres to an organic material; one of a single keytop and multiple keytops attached to the elastic keypad on a mounting portion, the one of a single keytop and multiple keytops having a lower side surface; and a pushing projection for pressing a contact portion, the pushing projection being disposed on the backside of the silicone rubber layer, and at a position corresponding to the mounting portion on which the one of a single keytop and multiple keytops is attached, wherein the organic resin layer is on the upper side of the elastic keypad and the silicone rubber layer is on the lower side of the elastic keypad, wherein the silicone rubber layer is formed of a silicone rubber composition having such selective adhesiveness that the silicone rubber composition has stronger adhesiveness to the organic resin layer than to a molding die, and the organic resin layer and the silicone rubber layer are firmly adhered together in one body, wherein a character or a picture is printed on the lower side surface of the one of a single keytop and multiple keytops using a binder ink and the lower side surface of the one of a single keytop and multiple keytops is directly adhered to a predetermined position on the organic resin layer using the binder ink, and wherein each keytop of the one of a single keytop and multiple keytops is individually adhered to the organic resin layer only by the binder ink.