A thin keyboard device is described herein. In one or more implementations, a keyboard device includes a plurality of keys, and a housing that includes a structural printed circuit board (PCB). The structural PCB includes, for each of the plurality of keys, a first conductive trace and a second conductive trace. The keyboard device further includes a key-switch mechanism for each of the plurality of keys. The key-switch mechanism includes a conductive material oriented towards the first conductive trace and the second conductive trace, and is configured to cause the conductive material to move downwards, when the key is depressed, to electrically connect the first conductive trace and the second conductive trace of the depressed key.

A key able to accept a label for a keypad used in controlling electrically operated devices, wherein the key structure accepts and secures an interchangeable label, and which forms an impermeable barrier to the electrical contacts of a programmable circuit board.

An input device includes an upper cover including a plurality of key openings and a keyboard including a base plate disposed on a back side of the upper cover, and a plurality of key tops provided in a front side of the base plate and inserted in the respective key openings. A plurality of hooks, each of which is disposed between the key tops adjacent to each other at a plurality of points and is provided upright on a back surface of the upper cover, fixes the keyboard to the upper cover.

A hand held switch having a depressible button linked to an electromechanical two-stage switch transmits first and second type electric signals in response to a depth of the button press. A pivoting lever links the button to the switch and is designed to move the switch in response to a button press for improved tactile control.

A device includes an engaging portion, a controller component, and a plurality of actuators. The engaging portion is configured to mechanically engage with at least one switch assembly. The plurality of actuators are capable of being actuated by the switch assembl(ies) when it/they are engaged with the engaging portion and depressed. The controller is configured to detect a first pattern of the plurality of actuators actuated at a time and responsively recognize a first type of switch assembly. The controller is also configured to detect a second (different) pattern of the plurality of actuators actuated at a time and responsively recognize a second (different) type of switch assembly.

An electronic device includes a casing having an opening; a circuit board having a plurality of electrodes, which is provided inside the casing; a contact member having a plurality of contact points corresponding to the electrodes, which is provided so as to seal the opening; and a key unit (press-key unit) having a key operation unit corresponding to the contact points, which is provided to the opening. The key unit (press-key unit) is attached to the opening detachably.

A switch unit has a display part configured to display an image, and an operation part provided on the display part in a stacked manner. The operation part includes a plurality of press buttons each having a pressable top surface formed to be transparent, a transparent base having a plurality of openings which are formed so as to be spaced from each other in positions corresponding to a display region of the display part, while avoiding a peripheral edge of the display region, a transparent substrate provided below the base and mounted with an electronic component, and a top plate having openings in positions corresponding to the press buttons and provided on the base, with the press buttons mounted thereon, so as to cover the base.

A button includes a base, a plurality of restricting members, a cap and a linking member. The base includes two positioning holes disposed on two sides of the base, respectively. Each of the restricting members includes an engaging portion, and the engaging portions are disposed corresponding to the positioning holes, respectively. The cap is disposed opposite to the base and connected with the restricting members. The linking member is disposed on the base, two ends of which are connected with the engaging portions, respectively. The engaging portions drive the linking member to rotate and are respectively inserted into the positioning holes when the cap moves toward a direction of the base. A keyboard device including the button is also disclosed.

A keyboard device includes a key structure, a base plate and a switch circuit board. The switch circuit board includes a soft covering element. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap and the soft covering element. The soft covering element is disposed on the switch circuit board. An accommodation space is formed between the soft covering element and the switch circuit board. The stabilizer bar is inserted into the accommodation space and connected with the switch circuit board. The stabilizer bar and the base plate are made of metallic material. Since the stabilizer bar and the base plate are separated by the switch circuit board, the keyboard device is capable of reducing noise.

A first breaker is adapted to be connected to an external source of electrical power, and a second breaker is adapted to be connected to an electrical generator. The first breaker is in an on position when the second breaker is in an off position, and the first breaker is in an off position when the second breaker is in an on position. The breakers are in combination with a toggle adapted to simultaneously operate the first breaker and the second breaker. The first breaker has a first breaker hole, and the second breaker has a second breaker hole, where the first breaker electrically connects an external power transmission to a breaker box, and the second breaker electrically connects a generator to the breaker box. The toggle comprising an integral bar with a first toggle hole through the toggle, and a second toggle hole through the toggle, such that the first toggle hole and the second toggle hole are longitudinally spaced whereby the first toggle hole registers with the first breaker hole while the second toggle hole registers with the second breaker hole. A first bolt extends through both the first toggle hole and the first breaker hole, and a second bolt extends through the second toggle hole and the second breaker hole, such that when the first breaker is turned to an on position, the toggle simultaneously turns the second breaker to an off position, and when the first breaker is turned to an off position, the toggle simultaneously turns the second breaker to an on position.