A keyboard has a keyswitch capable of showing its movement depth. The keyswitch includes a substrate, a lifting unit, a multistage positioning component and a keycap. The lifting unit is disposed on the substrate. The multistage positioning component is disposed on the substrate and has a plurality of first actuating portions. The keycap is connected with the lifting unit and adjacent by the multistage positioning component. The keycap has a second actuating portion. The keycap is moved relative to the substrate via the lifting unit, and the second actuating portion can contact against one of the plurality of first actuating portions to generate a feedback signal.

Disclosed is a photoelectric keyboard button, comprising: a circuit board (1) for providing a circuit connection, a mounting hole (11) being provided on the circuit board; an optocoupler assembly (2) provided on the circuit board and comprising a transmitting element (21) and a receiving element (22) provided on a side of the mounting hole; a button base (3), which is mounted into the mounting hole and is opened from the top to the bottom to form a guide basket (31), wherein a light passing groove (32) is provided on the guide basket for allowing the transmitting element and the receiving element to form a light passage; a pressing shaft (4), which is mounted into the guide basket and can slide up and down along the guide basket; and a hammer (5) vertically provided inside the guide basket, wherein the two ends thereof are respectively connected to the pressing shaft and the guide basket via springs (6, 7), a shifting block (51) connected to the pressing shaft is provided on a side surface of the hammer, and the hammer is provided with a light pathway switch (52). When being pressed down or bouncing up, the pressing shaft pushes the hammer to rotate horizontally and reciprocally via the shifting block, so as to rotate the light pathway switch to respectively switch on or off the light passage between the transmitting element and the receiving element. The photoelectric keyboard button can present an evident feeling for the difference between pressing and touching operations and a key press sound, has a higher coupling efficiency, and does not easily gather dust.

A key assembly in an optical mechanical keyboard, comprising a base plate (10), a circuit board (20); an optical switch, a rotating member (40), a key cap (30), a pressing cylinder (31), a primary spring (50), and a secondary spring (60). A ring-shaped fastening member (11) is provided, on the base plate, and a side wall of the ring-shaped fastening member is provided with two opposing first light-admitting slots (12), and a keystroke impact slot (13) is respectively provided at two sides of and between the two opposing first light-admitting slots. The circuit board is provided on the base plate, and the optical switch is mounted on the circuit board. The rotating member is disposed within the ring-shaped fastening member. Two opposing arms (41) radially extend from an upper end of the rotating member. A second light-admitting slot is provided at a lower end of a side wall of the rotating member. The key cap and the base plate are connected via a compressible connection member. The key cap is disposed above the rotating member. The pressing cylinder is provided at a lower portion of the key cap. A bent-line-shaped sliding slot (32) is provided respectively in two opposing side walk of the pressing cylinder. The primary spring is sleeved around the ring-shaped fastening member and the pressing cylinder, and the secondary spring is provided within the rotating member. The key assembly in the present invention has a simple structure and is lightweight and slim, and enables generation of a clear sound upon striking a key.

Provided are a control switch mechanism, a trigger switch, and an electric tool, having vibration resistance and durability and capable of preventing malfunction. The control switch mechanism (20) includes an optical sensor (21) having a light emitting element (21a) and a light receiving element (21b), and a reflector (22) that increases or decreases an amount of light received by the light receiving element (21b). An increase and a decrease in output of an operation device are controlled along with an increase and decrease in amount of light received by the light receiving element (21b) due to relative movement between the optical sensor (21) and the reflector (22).

A touch-sensitive light guide film has an emitting layer, a light guiding layer, a flexible transparent layer and a light source. The emitting layer has a first circuit. The light guiding layer located on one side of the emitting layer has a second circuit and a receiving space. The receiving space is concavely or thoroughly disposed on the light guiding layer. The flexible transparent layer disposed between the emitting layer and the light guiding layer, has a through hole and a receiving hole. The through hole is relative in position to the first circuit and the second circuit, and in the through hole, the first circuit and the second circuit may contact when the flexible transparent layer is compressed. The light source is disposed on the emitting layer and penetrating the receiving hole and protruding into the receiving space.

A universal circuit board compatible for a mechanical keyswitch and an optical keyswitch includes a main body, a plurality of conductive terminals and an opening structure. The main body has a first surface and a second surface opposite to each other. The plurality of conductive terminals is disposed on the first surface of the main body. The opening structure is formed on the main body and pierces through the first surface and the second surface. The opening structure can be inserted by an axle body of the mechanical keyswitch or be an optical transmission channel of the optical keyswitch.

A touch-sensitive light guide film has an emitting layer, a light guiding layer, a flexible transparent layer and a light source. The emitting layer has a first circuit. The light guiding layer located on one side of the emitting layer has a second circuit and a receiving space. The receiving space is concavely or thoroughly disposed on the light guiding layer. The flexible transparent layer disposed between the emitting layer and the light guiding layer, has a through hole and a receiving hole. The through hole is relative in position to the first circuit and the second circuit, and in the through hole, the first circuit and the second circuit may contact when the flexible transparent layer is compressed. The light source is disposed on the emitting layer and penetrating the receiving hole and protruding into the receiving space.

A photoelectric switch key is provided, which includes a shell, a circuit board, a photosensitive component and a press component. The photosensitive component is electrically connected to the circuit board, and the press component is provided with a light-shielding member. The press component is movably mounted on the shell to enable the light-shielding member to move relative to a light-receiving surface of the photosensitive component. The photosensitive component is capable of receiving external light when the light-shielding member is moved away from the light-receiving surface of the photosensitive component. The light-shielding member is adjacent to and shielding the light-receiving surface of the photosensitive component when the press component is pressed. The light-shielding member is enabled to completely block the external light from irradiating on the photosensitive component when the key is pressed by the user, which achieves the function of the key, and improves the sensitivity of the key.

A button includes a substrate, a frame body, an optical pressure board assembly and an optical trigger switch. The substrate includes a physical key and a light emitting assembly. The frame body mounted on the substrate accommodates the physical key and the light emitting assembly. A side of the frame body away from the substrate includes an opening. The optical pressure board assembly is slidably arranged in the frame body and covers the physical key and the light emitting assembly. The optical pressure board assembly is adapted to moving in an operating direction towards the substrate to contact the physical key, so the physical key generates a first manipulation signal. The optical pressure board assembly is further adapted to converting a light beam into a three-dimensional optical image. The optical trigger switch is mounted on an outer side of the frame body and adapted to generating a second manipulation signal.

The present invention provides a waterproof keyboard, including a keypad and a plurality of keys passing through the keypad. The keypad includes a compressive waterproof layer, a plate structure, and a plurality of through-holes, the compressive waterproof layer covering the plate structure, and the through-hole passing through the compressive waterproof layer and the plate structure. Each of the keys passes through one of the through-holes, and the compressive waterproof layer and the plate structure are clamped by means of a slot that is formed on a lateral surface of the key, to enable the key to be sealed with the compressive waterproof layer to form a sealed layer, so as to achieve the waterproof effect.