The invention proposes a key module for a key of a keyboard. The key module includes a module base, a module cover that can be coupled with the module base and a key tappet for coupling a keycap that is translucent in at least one symbol section. The module base includes at least one through-hole between a bottom section of the key module and the module cover. The module cover includes a section that is translucent for the light from a light source. The light source is a color-changeable light source for backlighting the symbol section of the keycap. The translucent section of the module cover is aligned with the at least one through-hole when the module cover is coupled to the module base.

In a first aspect of the present disclosure, a push switch includes a substrate including a first electrode and a second electrode that are arranged on an upper surface of the substrate; a resilient member arranged on the first electrode over the second electrode of the substrate; and a light-transmitting member including a crosslinked product of a chain olefin-cyclic olefin copolymer. The light-transmitting member covers the resilient member from above and includes an upper surface, a lower surface, a peripheral side surface between edges of the upper surface and edges of the lower surface of the light-transmitting member, and a periphery of the lower surface of the light-transmitting member. The periphery may be fixed on the substrate.

A portable radio includes a printed circuit board, a frame positioned in front of the printed circuit board, a speaker positioned within the frame, a support platform positioned in front of the speaker and the frame, a button positioned in front of the support platform, and electrical components linked between the button and the printed circuit board. The button is movable between a first position where an electrical signal is sent through the plurality of electrical components to the printed circuit board, and a second position where the electrical signal is interrupted.

A portable radio includes a printed circuit board, a frame positioned in front of the printed circuit board, a speaker positioned within the frame, a support platform positioned in front of the speaker and the frame, a button positioned in front of the support platform, and electrical components linked between the button and the printed circuit board. The button is movable between a first position where an electrical signal is sent through the plurality of electrical components to the printed circuit board, and a second position where the electrical signal is interrupted.

A touchpad device includes a bottom board, at least one supporting board, a circuit board, a first extending structure, and a second extending structure. The bottom board is configured to be fixed to a housing. The supporting board is coupled to the bottom board and configured to swing relative to the bottom board. The circuit board is attached to a side of the supporting board away from the bottom board. The first extending structure is disposed on the bottom board and extends toward the supporting board. The second extending structure is disposed on the supporting board and extends toward the bottom board. The first extending structure partially extends to a side of the second extending structure adjacent to the supporting board, or the second extending structure partially extends to a side of the first extending structure adjacent to the bottom board.

A touchpad device includes a bottom board, at least one supporting board, a circuit board, a first extending structure, and a second extending structure. The bottom board is configured to be fixed to a housing. The supporting board is coupled to the bottom board and configured to swing relative to the bottom board. The circuit board is attached to a side of the supporting board away from the bottom board. The first extending structure is disposed on the bottom board and extends toward the supporting board. The second extending structure is disposed on the supporting board and extends toward the bottom board. The first extending structure partially extends to a side of the second extending structure adjacent to the supporting board, or the second extending structure partially extends to a side of the first extending structure adjacent to the bottom board.

An electro-permanent magnet key assembly may comprise an electro-permanent magnet generating a magnetic field when a direction of current applied to an electrically conductive wire coiled around a low-coercivity magnet, and a pair of scissor plates operably connected to the electropermanent magnet, such that the scissor plates rotate away from one another in the presence of downward force on a key cap situated atop the scissor plates. The top surface of the key cap may lie flush with adjacent keys of a keyboard when the key cap is in a neutral position. The electro-permanent magnet key assembly may further comprise a ferromagnetic flange operably connected to one of the scissor plates having angled overlap protrusions situated adjacent to the electropermanent magnet when the key cap is not in the neutral position, such that the angled overlap protrusions are attracted toward the magnetic field to return the key cap to the neutral position.

An electro-permanent magnet key assembly may comprise an electro-permanent magnet generating a magnetic field when a direction of current applied to an electrically conductive wire coiled around a low-coercivity magnet, and a pair of scissor plates operably connected to the electropermanent magnet, such that the scissor plates rotate away from one another in the presence of downward force on a key cap situated atop the scissor plates. The top surface of the key cap may lie flush with adjacent keys of a keyboard when the key cap is in a neutral position. The electro-permanent magnet key assembly may further comprise a ferromagnetic flange operably connected to one of the scissor plates having angled overlap protrusions situated adjacent to the electropermanent magnet when the key cap is not in the neutral position, such that the angled overlap protrusions are attracted toward the magnetic field to return the key cap to the neutral position.

A dustproof micro switch is provided by the present disclosure, comprising a base body, an upper cover, and a button, wherein the base body and the upper cover form a box body; the upper cover is provided with a first half of through hole for the button, the base body is provided with a second half of through hole for the button, and the first half of through hole for the button and the second half of through hole for the button form a through hole for the button; one end of the button is arranged in the box body, and the other end of the button extends out of the box body through the through hole for the button; the end, extending out of the box body, of the button is provided with a sealing sleeve, a movable contact arm assembly and a movable contact arm support for fixing the movable contact arm assembly are arranged below the end of the button arranged in the box body, and the movable contact arm support is arranged on the base body; and a terminal assembly in fit with the movable contact arm assembly is further arranged in the box body. In accordance with the dustproof micro switch provided by the present disclosure, the end, extending out of the box body formed by the base body and the upper cover, of the button is provided with the sealing sleeve, such that the button is able to be in close fit with the box body by means of the elasticity of the sealing sleeve to improve the dustproof performance of the switch.

A dustproof micro switch is provided by the present disclosure, comprising a base body, an upper cover, and a button, wherein the base body and the upper cover form a box body; the upper cover is provided with a first half of through hole for the button, the base body is provided with a second half of through hole for the button, and the first half of through hole for the button and the second half of through hole for the button form a through hole for the button; one end of the button is arranged in the box body, and the other end of the button extends out of the box body through the through hole for the button; the end, extending out of the box body, of the button is provided with a sealing sleeve, a movable contact arm assembly and a movable contact arm support for fixing the movable contact arm assembly are arranged below the end of the button arranged in the box body, and the movable contact arm support is arranged on the base body; and a terminal assembly in fit with the movable contact arm assembly is further arranged in the box body. In accordance with the dustproof micro switch provided by the present disclosure, the end, extending out of the box body formed by the base body and the upper cover, of the button is provided with the sealing sleeve, such that the button is able to be in close fit with the box body by means of the elasticity of the sealing sleeve to improve the dustproof performance of the switch.