A key structure including a circuit board, a membrane, a positioning frame, a sensor module, a scissor leg, and a key cap is provided. The membrane is disposed on the circuit board and is electrically connected to each other. The positioning frame is disposed on the membrane. The sensor module is disposed on the membrane and is electrically connected to the circuit board. The scissor leg is connected to the positioning frame and is adapted to move up and down relative to the positioning frame. The key cap is detachably disposed at the scissor leg and is spaced with positioning frame. The key cap has a reflective plane and a shaft component. The reflective plane faces the membrane. The shaft component is extended from the reflective plane and penetrates through the scissor leg and the positioning frame to abut the membrane. The sensor module is aligned with the reflective plane.

A key structure including a circuit board, a membrane, a positioning frame, a sensor module, a scissor leg, and a key cap is provided. The membrane is disposed on the circuit board and is electrically connected to each other. The positioning frame is disposed on the membrane. The sensor module is disposed on the membrane and is electrically connected to the circuit board. The scissor leg is connected to the positioning frame and is adapted to move up and down relative to the positioning frame. The key cap is detachably disposed at the scissor leg and is spaced with positioning frame. The key cap has a reflective plane and a shaft component. The reflective plane faces the membrane. The shaft component is extended from the reflective plane and penetrates through the scissor leg and the positioning frame to abut the membrane. The sensor module is aligned with the reflective plane.

This application relates to illuminated dome switches and a dome switch assembly having a first contact carried by a switch base and a dome shaped structure coupled to and supported by the switch base, the dome shaped structure comprising a material that is flexible and capable of internally transmitting visible light. The switch assembly can include a second contact coupled to the dome shaped structure and arranged opposite the first contact, and a light source configured to emit visible light, the light source in optical communication with the dome shaped structure such that at least some of the visible light emitted by the light source passes into the material and is subsequently emitted by the material in a generally uniform manner.

This application relates to illuminated dome switches and a dome switch assembly having a first contact carried by a switch base and a dome shaped structure coupled to and supported by the switch base, the dome shaped structure comprising a material that is flexible and capable of internally transmitting visible light. The switch assembly can include a second contact coupled to the dome shaped structure and arranged opposite the first contact, and a light source configured to emit visible light, the light source in optical communication with the dome shaped structure such that at least some of the visible light emitted by the light source passes into the material and is subsequently emitted by the material in a generally uniform manner.

The invention concerns an inverter housing (15) with at least two housing parts (16, 17), which can be detachably connected to one another by way of fastening elements (19), with a connection area (21), and an operation area (20) provided on a housing part (16, 17). In accordance with the invention, an optoelectronic control unit (1) is provided for purposes of operation, with at least one reflection light sensor (2), with in each case a light source (3) and in each case a light detector (4), evaluation electronics (5), and with an operating panel (6) for purposes of operating the reflection light sensor (2) as a result of the approach of an object (7), wherein a light guide (8) is arranged connected to a housing part (17), the other housing part (16) has a mounting (25) for a circuit board (14), which contains the reflection light sensor (2) of the optoelectronic control unit (1), and a signal light source (9) for the emission of light in the visible wavelength range is arranged such that the light emitted by the signal light source (9) can be projected via the light guide (8) onto the operating panel (6), wherein the connection area (21) is arranged below the operation area (20).

The invention concerns an inverter housing (15) with at least two housing parts (16, 17), which can be detachably connected to one another by way of fastening elements (19), with a connection area (21), and an operation area (20) provided on a housing part (16, 17). In accordance with the invention, an optoelectronic control unit (1) is provided for purposes of operation, with at least one reflection light sensor (2), with in each case a light source (3) and in each case a light detector (4), evaluation electronics (5), and with an operating panel (6) for purposes of operating the reflection light sensor (2) as a result of the approach of an object (7), wherein a light guide (8) is arranged connected to a housing part (17), the other housing part (16) has a mounting (25) for a circuit board (14), which contains the reflection light sensor (2) of the optoelectronic control unit (1), and a signal light source (9) for the emission of light in the visible wavelength range is arranged such that the light emitted by the signal light source (9) can be projected via the light guide (8) onto the operating panel (6), wherein the connection area (21) is arranged below the operation area (20).

A keyswitch includes a circuit board, a bottom board abutting against the circuit board, a cap, a light receiver and a light emitter disposed on the circuit board and opposite to each other, a base disposed on the circuit board, a cover disposed on the base, a first elastic member disposed through the cover and the base, a support device, and a second elastic member fixed to the base and having a flexible rod. The support device is movably connected to the cap and bottom board and has a sheet structure. When the cap is pressed, the sheet structure blocks light transmission between the light emitter and the light receiver to generate a triggering signal. When the cap is pressed to make the flexible rod deform downward with the sheet structure and then cross the sheet structure, the flexible rod is released to collide with the cover to make sound.

A keyswitch includes a circuit board, a bottom board abutting against the circuit board, a cap, a light receiver and a light emitter disposed on the circuit board and opposite to each other, a base disposed on the circuit board, a cover disposed on the base, a first elastic member disposed through the cover and the base, a support device, and a second elastic member fixed to the base and having a flexible rod. The support device is movably connected to the cap and bottom board and has a sheet structure. When the cap is pressed, the sheet structure blocks light transmission between the light emitter and the light receiver to generate a triggering signal. When the cap is pressed to make the flexible rod deform downward with the sheet structure and then cross the sheet structure, the flexible rod is released to collide with the cover to make sound.

In a semiconductor relay module, inside a package, one of a pair of input parts of a first semiconductor relay is connected to a first input terminal, the other of the pair of input parts of the first semiconductor relay is connected to a second input terminal, one of a pair of input parts of a second semiconductor relay is connected to the second input terminal, the other of the pair of input parts of the second semiconductor relay is connected to the first input terminal, one of a pair of input parts of a third semiconductor relay is connected to a third input terminal, and the other of the pair of input parts of the third semiconductor relay is connected to the first input terminal or the second input terminal.

In a semiconductor relay module, inside a package, one of a pair of input parts of a first semiconductor relay is connected to a first input terminal, the other of the pair of input parts of the first semiconductor relay is connected to a second input terminal, one of a pair of input parts of a second semiconductor relay is connected to the second input terminal, the other of the pair of input parts of the second semiconductor relay is connected to the first input terminal, one of a pair of input parts of a third semiconductor relay is connected to a third input terminal, and the other of the pair of input parts of the third semiconductor relay is connected to the first input terminal or the second input terminal.