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US 4,382,167 AGranted
Push-button switch
AssigneeAlps Electric Co., Ltd.
InventorsTakeshige Maruyama, Sadayoshi Iwasaki
Life of this patent
Estimating the term…
Abstract
A push-button switch comprises a cover member which is made from a synthetic resin, a switch case in which a plurality of fixed terminals are embedded by the unitary molding, and a slide member which receives movable contact pieces therein. Side walls of the switch case have thick-walled base portions and thin-walled upper edge portions, and the cover member is sandwiched between the pair of thin-walled upper edge portions so as to make the pair of opposing side walls parallel.
Claims15
A push-button switch comprising:
- a switch case formed with respective openings on an upper side and one end side thereof and having a plurality of rows of fixed terminal embedded on a lower side thereof;
- a slide member slidably inserted into said switch case from said opening on said one end side of said switch case, said slide member being formed on an upper side thereof with a heart-shaped cam groove, on a lower side thereof with receiving portions for receiving movable contact pieces adapted to slide in contact with the fixed terminals and at a front end part thereof with an operation portion for operating said slide member against a coil spring;
- a cover member being received within said opening on said upper side of said switch case for closing it, said cover member having on a lower side thereof means for holding a Z-shaped lock pin in slidable enegagement with said heart-shaped cam groove, a recess adjacent to said holding means for receiving a spring member for pressing said lock pin against said heart-shaped cam groove;
- and
- coacting engaging means formed respectively on the side walls of said switch case and side walls of said cover member for holding the two together;
- wherein one inner wall of said cover member surrounding said recess and being orthogonal to the sliding direction of said slide member is provided with a protuberance for holding said spring member, said spring member being flat and provided with an engaging piece for engaging with said protuberance.
3 more elements
A push-button switch comprising:
- a switch case formed with respective openings on an upper side and one end side thereof and having a plurality of rows of fixed terminal embedded on a lower side thereof;
- a slide member slidably inserted into said switch case from said opening on said one end side of said switch case, said slide member being formed on an upper side thereof with a heart-shaped cam groove, on a lower side thereof with receiving portions for receiving movable contact pieces adapted to slide in contact with the fixed terminals and at a front end part thereof with an operation portion for operating said slide member against a coil spring;
- a cover member for being received within said opening on said upper side of said switch case for closing it, said cover member having on a lower side thereof means for holding a Z-shaped lock pin in slidable engagement with said heart-shaped cam groove, a recess adjacent to said holding means for receiving a spring member for pressing said lock pin against said heart-shaped cam groove, and
- coacting engaging means formed respectively on the side walls of said switch case and side walls of said cover member for holding the two together;
- wherein lower parts of said side walls of said switch case are formed relatively thick, while upper parts close to the upper side opening are formed relatively thin, said side walls of said switch case extending inward resiliently at a slight angle so as to angle closer to each other.
2 more elements
Dependencies are inferred from the claim text.