According to the present invention there is provided a button assembly, comprising, a platform having at least two electrodes; a dome member which comprises electrically conductive material, wherein the dome member is electrically connected to at least one of said at least two electrodes, and the dome is arranged so that at least a portion of the dome member overlays at least one other of the at least two electrodes, so that when the dome member is selectively collapsed inwardly by the application of force, the dome member will electrically contact said at least one other of the at least two electrodes, so that in its collapse state the dome member electrically connects the at least one of said at least two electrodes with the at least one other of the at least two electrodes; an interface member which comprises, (a) a compression member which is attached to the dome member at a position which overlays said at least one other of the at least two electrodes; (b) a restrictor member which is configured such that it projects towards the platform and the distance between the platform and the restrictor member is less than the distance between said at least one other of the at least two electrodes and portion of the dome which overlays at least one other of the at least two electrodes, and (c) at least one elastic member which connects the restrictor member and the compression member.

According to the present invention there is provided a button assembly, comprising, a platform having at least two electrodes; a dome member which comprises electrically conductive material, wherein the dome member is electrically connected to at least one of said at least two electrodes, and the dome is arranged so that at least a portion of the dome member overlays at least one other of the at least two electrodes, so that when the dome member is selectively collapsed inwardly by the application of force, the dome member will electrically contact said at least one other of the at least two electrodes, so that in its collapse state the dome member electrically connects the at least one of said at least two electrodes with the at least one other of the at least two electrodes; an interface member which comprises, (a) a compression member which is attached to the dome member at a position which overlays said at least one other of the at least two electrodes; (b) a restrictor member which is configured such that it projects towards the platform and the distance between the platform and the restrictor member is less than the distance between said at least one other of the at least two electrodes and portion of the dome which overlays at least one other of the at least two electrodes, and (c) at least one elastic member which connects the restrictor member and the compression member.

The switch body includes: a wiring substrate where first to fourth fixed contact members are formed; and a movable contact member including a pressure receiving part opposite from the second fixed contact member, a first outer edge facing the first fixed contact member, and a second outer edge facing the third fixed contact member. The fourth fixed contact member is formed in a region outside a projection region being a projection of the movable contact member on the wiring substrate and is in a position facing the first outer edge when the second outer edge is moved to a region where the second fixed contact member is formed.

The switch body includes: a wiring substrate where first to fourth fixed contact members are formed; and a movable contact member including a pressure receiving part opposite from the second fixed contact member, a first outer edge facing the first fixed contact member, and a second outer edge facing the third fixed contact member. The fourth fixed contact member is formed in a region outside a projection region being a projection of the movable contact member on the wiring substrate and is in a position facing the first outer edge when the second outer edge is moved to a region where the second fixed contact member is formed.

An open/closed indicating apparatus for a circuit breaker operating apparatus, comprising a button and an indicating element. The button is provided therein with a cavity. The indicating element is mounted within the cavity. The indicating element can rotate within the cavity. The button is provided thereon with an observation window. The indicating element can display different areas in the observation window while rotating. When a small number of gaps are provided between the indicating element and the housing, the impact on the angle of rotation of the indicating element is reduced, the indicating element can accurately indicate an open/closed state of a circuit breaker, and when a product is being fitted and assembled, a requirement on gap fitness is reduced for the assembly.

An open/closed indicating apparatus for a circuit breaker operating apparatus, comprising a button and an indicating element. The button is provided therein with a cavity. The indicating element is mounted within the cavity. The indicating element can rotate within the cavity. The button is provided thereon with an observation window. The indicating element can display different areas in the observation window while rotating. When a small number of gaps are provided between the indicating element and the housing, the impact on the angle of rotation of the indicating element is reduced, the indicating element can accurately indicate an open/closed state of a circuit breaker, and when a product is being fitted and assembled, a requirement on gap fitness is reduced for the assembly.

A press-key with a multiple-trigger mechanism includes a base, an alphanumeric key assembly, and at least two elastic members. The alphanumeric key assembly includes a coupling assembly provided on the base. The at least two elastic members are provided on the base and under the alphanumeric key assembly. One of the elastic members has a different height from the remainder of the elastic members. When the alphanumeric key assembly is moved toward the base, the elastic members are separately driven by the alphanumeric key assembly to press and thereby activate a switch such that different electrical signals are generated. The operability and trigger response of the press-key can be flexibly adjusted according to user needs so that the press-key can be operated rapidly and respond in real time.

A press-key with a multiple-trigger mechanism includes a base, an alphanumeric key assembly, and at least two elastic members. The alphanumeric key assembly includes a coupling assembly provided on the base. The at least two elastic members are provided on the base and under the alphanumeric key assembly. One of the elastic members has a different height from the remainder of the elastic members. When the alphanumeric key assembly is moved toward the base, the elastic members are separately driven by the alphanumeric key assembly to press and thereby activate a switch such that different electrical signals are generated. The operability and trigger response of the press-key can be flexibly adjusted according to user needs so that the press-key can be operated rapidly and respond in real time.

A middle illuminated button switch including a printed circuit board (PCB), a base and a cover. A guide core is arranged between the base and the cover, a through hole is arranged at the bottom of the base and under the guide core. A light guide groove is provided at the lower end surface of the guide core. A light-emitting element is arranged on the upper end of the PCB, and the light-emitting element is inserted into the base from the through hole and embedded in the light guide groove. Since the light-emitting element is embedded in the base from the bottom to the top, and the light is emitted to the outside from the middle through the guide core, so as to realize the light-emitting effect in the middle of the button.

A middle illuminated button switch including a printed circuit board (PCB), a base and a cover. A guide core is arranged between the base and the cover, a through hole is arranged at the bottom of the base and under the guide core. A light guide groove is provided at the lower end surface of the guide core. A light-emitting element is arranged on the upper end of the PCB, and the light-emitting element is inserted into the base from the through hole and embedded in the light guide groove. Since the light-emitting element is embedded in the base from the bottom to the top, and the light is emitted to the outside from the middle through the guide core, so as to realize the light-emitting effect in the middle of the button.