A push switch including a pressing member, a movable contact, an interposed member, a first fixed contact, and a second fixed contact is provided. The pressing member includes a pressing portion configured to be pressed, and includes an elastically deformable peripheral wall portion having a lower end portion and extending downward and outward from the outer periphery of the pressing portion. The movable contact has a dome shape and is disposed below the pressing member. The interposed member is disposed between the pressing member and the movable contact, and is configured to press the movable contact by receiving and being pressed by the lower end portion of the peripheral wall portion of the pressing member. The lower end portion of the peripheral wall portion of the pressing member presses the interposed member while the peripheral wall portion is subjected to elastic deformation in response to the pressing portion being pressed.

When an initial position of an enabling switch is given as a first position (301), a position of the enabling switch in which a movable member is most pressed is given as a third position (303), and a rising start position of a maximum rise of a load is given as a second position (302), the rising start position being between the first position (301) and the third position (303), a minor peak (341) of the load appears between the first position (301) and the second position (302). An ON switching position (311) is between a falling start position (323) of the minor peak (341) and the second position (302). A maximum load during the minor peak (341) is greater than or equal to the load in the ON switching position (311) and less than or equal to the load in an OFF switching position (312).

A switch device includes a housing including a recessed portion, a metal member, and a movable contact point member. The recessed portion is recessed in a thickness direction from an opening formed in a first surface. The metal member includes a terminal protruding from the housing, a fixed contact point exposed to an inner side of the recessed portion, and a connection portion connecting the terminal and the fixed contact point. The movable contact point member is provided in the recessed portion and is configured to move to connect to or disconnect from the fixed contact point. A sealing unit is provided in a gap between the connection portion and the housing. The sealing unit is made by solidifying a sealing agent supplied through a hole portion that is in communication with the connection portion from a second surface opposite to the first surface of the housing.

A switch device includes a housing including a recessed portion, a metal member, and a movable contact point member. The recessed portion is recessed in a thickness direction from an opening formed in a first surface. The metal member includes a terminal protruding from the housing, a fixed contact point exposed to an inner side of the recessed portion, and a connection portion connecting the terminal and the fixed contact point. The movable contact point member is provided in the recessed portion and is configured to move to connect to or disconnect from the fixed contact point. A sealing unit is provided in a gap between the connection portion and the housing. The sealing unit is made by solidifying a sealing agent supplied through a hole portion that is in communication with the connection portion from a second surface opposite to the first surface of the housing.

Stackable electric contact block including a casing that defines its volume, the casing having upper and lower faces for connecting the block to another component, the casing accommodating a screw for fixing the block to another component, and a press rod capable of moving from a rest position to an activation position for transferring a translation force to a component attached to the lower face of the casing, the press rod including an activation head in the form of a wedge capable of engaging with a push-button or a rotary knob, the casing including a cavity for guiding the press rod between its rest and activation positions, in which cavity the press rod is accommodated. A device for guiding the press rod into the guide cavity includes a guide tab accommodated in a matching guide slot passing through the activation head.

A switch device reduces an impact sound generated when the operation member returns to its original position. The switch device includes a housing member, an operation knob accommodated in the housing member and capable of being pushed, and a spring that urges the operation knob in a direction opposite to the pushing direction. The housing member includes a two-pronged stopper that regulates the movement of the operation knob in the opposite direction. The operation knob includes a tab that abuts on the two-pronged stopper. When the movement of the operation knob in the opposite direction is regulated, the two-pronged stopper and the tab make a line contact first.

A switch device reduces an impact sound generated when the operation member returns to its original position. The switch device includes a housing member, an operation knob accommodated in the housing member and capable of being pushed, and a spring that urges the operation knob in a direction opposite to the pushing direction. The housing member includes a two-pronged stopper that regulates the movement of the operation knob in the opposite direction. The operation knob includes a tab that abuts on the two-pronged stopper. When the movement of the operation knob in the opposite direction is regulated, the two-pronged stopper and the tab make a line contact first.

A safety device cabinet includes an equipment cabinet, a safety switch having an integrated light, a switch logic circuit and a battery back-up. The safety device cabinet includes an equipment cabinet and an access door. The access door includes a window and an edge light emitting device. The window is etched with a message containing a description of the equipment stored in the equipment cabinet. The safety switch with an integrated light includes a push momentary switch, a light bezel and a bezel light source. An inner perimeter of the outer shell is sized to receive a push button of the push momentary switch. The light bezel preferably includes an opening to receive a light emitting portion of the light source. The switch logic circuit preferably includes a AC to DC converter, a microprocessor, a software program and a monitoring device.

A safety device cabinet includes an equipment cabinet, a safety switch having an integrated light, a switch logic circuit and a battery back-up. The safety device cabinet includes an equipment cabinet and an access door. The access door includes a window and an edge light emitting device. The window is etched with a message containing a description of the equipment stored in the equipment cabinet. The safety switch with an integrated light includes a push momentary switch, a light bezel and a bezel light source. An inner perimeter of the outer shell is sized to receive a push button of the push momentary switch. The light bezel preferably includes an opening to receive a light emitting portion of the light source. The switch logic circuit preferably includes a AC to DC converter, a microprocessor, a software program and a monitoring device.

A key structure includes a keycap, a membrane circuit board, and a rubber dome between the keycap and the membrane circuit board. The rubber dome includes a ring-shaped structure, a lower foundation structure, a contacting post, a first inclined wall and a second inclined wall. The ring-shaped structure includes a first top surface. The first top surface is upwardly pushed against the keycap. The lower foundation structure includes a first bottom surface. The first bottom surface is pushed downwardly pushed against the membrane circuit board. The contacting post is connected with the ring-shaped structure. The first inclined wall is connected with the ring-shaped structure and the lower foundation structure. The second inclined wall is connected with the ring-shaped structure and the contacting post. There is a first included angle θ1 between the second inclined wall and the first bottom surface. Preferably, 30°≤θ1≤85°.