A keyboard device includes a circuit board and plural key structures. Each key structure includes a keycap, a hinge element and a base. The hinge element includes a first lateral wing part, a second lateral wing part and a bendable part. The first lateral wing part is connected between the keycap and the base. The second lateral wing part is connected between the keycap and the base. The bendable part is connected between the first lateral wing part and the second lateral wing part. The bendable part is thinner than the first lateral wing part and the second lateral wing part. While the keycap is moved upwardly or downwardly relative to the base, a bending angle of the hinge element and a relative position between the first base shaft and the first receiving hole are changed.

A key structure includes a membrane switch circuit member, a rubbery elastomer, a housing, a triggering element, a metallic elastic element and a keycap. The keycap is disposed on the triggering element. The rubbery elastomer is disposed on the membrane switch circuit member. The housing is located over the rubbery elastomer. The triggering element is movable relative to the housing. The metallic elastic element is contacted with the triggering element. While the keycap is depressed, the triggering element is moved relative to the housing to press the metallic elastic element. While the metallic elastic element is pushed by the triggering element, the metallic elastic element is swung to collide with the triggering element. Consequently, a click sound is generated.

A key structure includes a membrane switch circuit member, a rubbery elastomer, a housing, a triggering element, a metallic elastic element and a keycap. The keycap is disposed on the triggering element. The rubbery elastomer is disposed on the membrane switch circuit member. The housing is located over the rubbery elastomer. The triggering element is movable relative to the housing. The metallic elastic element is contacted with the triggering element. While the keycap is depressed, the triggering element is moved relative to the housing to press the metallic elastic element. While the metallic elastic element is pushed by the triggering element, the metallic elastic element is swung to collide with the triggering element. Consequently, a click sound is generated.

This application is directed to system, devices, and methods of keyboard key switches that facilitate electrical connections to specialized keycaps. In some embodiments, a serial connection (e.g., USB or any serial protocol) can be created and maintained between a key switch of the inventive subject matter and a specialized keycap that couples with a top portion of the key switch's plunger. Key switches of the inventive subject matter incorporate spring probes to create electrical connections between a printed circuit board disposed below the key switches and the top portions of the key switches' plungers. Thus, different regions of a key switch's plunger can feature different conductive regions, which facilitates creating electrical connections between a PCB and a specialized keycap.

The present invention concerns a push-piece winding button control device for a portable object of small dimensions. This device includes a pivoting control stem axially movable between at least a transitory first position and a stable second position, wherein said device further includes a position indexing plate arranged to be integral in translation with the control stem, while keeping the same orientation relative to the frame, and wherein the device further comprises a cam follower arranged to cooperate with a longitudinal cam path formed in the position indexing plate. The cam path includes a recess defining the stable position of the control stem, and a ramp-shaped profile portion which rises from the recess towards the transitory position.

A balance mechanism (180) and a keyboard switch (100) including the balance mechanism (180) are provided. The balance mechanism (180) comprises a first frame (181) and a second frame (182) rotatable relative to each other, which are both of hollow structures with matched shapes and sizes. When the first frame (181) and the second frame (182) are in a superimposed state, a dynamic contact (130) and a static contact (120) are electrically connected. A relative rotation between the first frame (181) and the second frame (182) drives the moving contact (130) to move, achieving separation and contact between the dynamic contact (130) and the static contact (120), thereby turning on and off the switch. The keyboard switch (100) is thin, thus achieving miniaturization of the switch; the switch prevents a guide core (160) from tilting and being stuck in the button, which is convenient for operation.

A keyboard switch for a keyboard includes a base secured to a plunger that reciprocates with respect to the base and is biased away from the base. An electrical contact assembly is positioned within a cavity defined by the base and the plunger. The electrical contact assembly remains in an electrically open state when the plunger is furthest from the base, but the electrical contact assembly enters an electrically closed state when the plunger is longitudinally moved downwardly by force towards the base. In this regard, a cam protruding from a side portion of a body of the plunger has a profile surface that contacts the electrical contact assembly as the plunger is longitudinally moved towards the base. A curved profile of the cam that incorporates a concave arc uniquely changes the amount of force experienced by the typist at different points of the downward motion of the plunger.

A keyboard device includes a circuit board and plural key structures. Each key structure includes a keycap, a hinge element and a base. The hinge element includes a first lateral wing part, a second lateral wing part and a bendable part. The first lateral wing part is connected between the keycap and the base. The second lateral wing part is connected between the keycap and the base. The bendable part is connected between the first lateral wing part and the second lateral wing part. The bendable part is thinner than the first lateral wing part and the second lateral wing part. While the keycap is moved upwardly or downwardly relative to the base, a bending angle of the hinge element and a relative position between the first base shaft and the first receiving hole are changed.

The invention relates to an emergency stop switch, having: a switch mechanism with a manually operable switch and with a first contact element which is operatively connected to the switch, wherein the switch is configured to bring the first contact element into contact with a second contact element to trigger an emergency stop function. A cable pull mechanism with a switch tongue guided in a switch tongue guide is connected to a first end of a cable, wherein a switch tongue spring preloads the switch tongue during operation in a direction away from the cable. The cable is connected on its second end with preload to an equalizing spring during operation, wherein the first contact element is operatively connected to the switch tongue. When the preloaded cable is pulled, is guided in the switch tongue guide in the direction of the cable, opposing a spring force of the switch tongue spring, and in the process brings the first contact element into contact with the second contact element in order to trigger the emergency stop function by the cable pull mechanism.

A static and dynamic piece assembly for a key switch includes a static piece and a dynamic piece, an ejector rod being arranged in a middle section of the dynamic piece. The ejector rod being arranged on the dynamic piece of the static and dynamic piece assembly for the key switch increases contact sensitivity between the static piece and the dynamic piece; the ejector rod and the dynamic piece are formed in an integral structure by means of injection molding, such that connection strength between the ejector rod and the dynamic piece is improved; furthermore, installation ways of the dynamic piece are flexible and diversified. The static and dynamic piece assembly is simple in structure, convenient and practical, and increases the efficiency of contact and disconnection between the static piece and the dynamic piece, thus being suitable for large-scale promotion.