A key structure, including a base plate, a thin film circuit, a dome switch, a scissor structure, an elastic piece, and a keycap, is provided. The thin film circuit is disposed on the base plate. The dome switch is disposed on the thin film circuit. The scissor structure is disposed on the base plate, wherein the scissor structure includes a first support and a second support pivotally connected to the first support, and the second support surrounds the first support. The first support has a trigger part, and the second support has a chamber disposed corresponding to the trigger part. The elastic piece is engaged inside the chamber, wherein the elastic piece has an interfering part located outside the chamber, and the interfering part is located on a moving path of the trigger part. The keycap is disposed on the scissor structure and the dome switch.

Provided is a multi-position electrical switch. The multi-position switch includes an enclosure and a stem structured and arranged to move along a vertical axis within the enclosure. The stem provides a plurality of distinct horizontal protrusions as physical deactivators at different elevations along the vertical axis. A plurality of distinct electrical contacts are provided by a paired stationary element and a movable element for flexibly making and breaking electrical contact with the stationary element, the movable element biased for contact with the stationary element. Each distinct electrical contact is associated with at least one distinct horizontal protrusion. A spring disposing the stem in an initial position in which the plurality of distinct horizontal protrusions dispose all of the movable elements in broken contact. Depression of the stem along the vertical axis transitions the distinct horizontal protrusions away from the movable elements permitting contact with their paired stationary elements.

A key structure includes a movable element, an elastic element, a light-emitting element and a pressure sensing element. The pressure sensing element is arranged between the elastic element and the light-emitting element. The elastic element is disposed on the movable element. The light-emitting element emits a light beam. The light beam is transmitted through the pressure sensing element and projected to the movable element to illuminate the key structure. While the key structure is depressed, the elastic element is pushed by the movable element. The pressure sensing element is pushed by the elastic element according to different magnitudes of the depressing force. Consequently, the key structure generates different pressure sensing signals.

A restoration assembly of a button switch includes first and second sleeves, and a spring disposed between the two sleeves. A first outer diameter of the first sleeve is less than a second inner diameter of the second sleeve to make the second sleeve movably jacket outside the first sleeve. The jacketed first and second sleeves are disposed between a key cap and a base of the button switch. The spring has a first end portion, a second end portion and a middle section. A middle outer diameter of the middle section of the spring is larger than a first inner diameter of the first sleeve. During the spring being compressed along with the key cap being pressed downward, the middle section is squeezed to shrink and slide into the first sleeve through an end edge of the first sleeve, thereby producing a tactile feedback and/or a first sound.

A key structure includes a pedestal with a sliding groove, an upper cover, a triggering element, and a spring strip. The spring strip is movable within the sliding groove. The triggering element is arranged between the pedestal and the upper cover, and located beside the spring strip. When a keycap of the key structure is depressed, the triggering element is moved relative to the pedestal to push the spring strip. In response to the elasticity of the pushed spring strip, the spring strip is slid within the sliding groove to collide with the upper cover. Consequently, the key structure generates sound surely.

A switch device is presented. The switch device comprises a magnet supported such that it can be tilted, a transmitter device coupled to the magnet, designed to cause a tilting movement of the magnet in response to a switch actuation of the switch device, and a sensor device, having a first sensor element and a second sensor element for detecting the tilting movement, wherein the first sensor element is designed to acquire a plurality of first magnetic field values of a magnetic field shift of a magnetic field generated by the magnet caused by the tilting movement, and the second sensor element is designed to acquire a plurality of second magnetic field values of a second magnetic field shift of the magnetic field generated by the magnetic caused by the tilting movement.

A keyswitch uses a combination of springs connected in serial for providing a return force to a keycap of the keyswitch. When the keycap moves toward a base of the keyswitch beyond a transition position, one of the springs stops continuously deforming. It leads to an increment of the elastic coefficient of the combination of springs and an increment of the elastic stored energy by the combination of springs. Therefore, during a pressing on the keycap, the keycap can provide a light force feedback and then a heavy force feedback to a user. Further, the keyswitch can use a switch with a lateral motion, which can reduce influence of a resilient force produced by the switch on the up and down movement of the keycap. The keyswitch also can use an elastic piece disposed beside the keycap, which can provide a tactile feedback to the user.

Keyboards, input devices, and related systems include key mechanisms with keycaps and actuators that provide adjustable feedback in response to user input. The actuators are controllable to provide variable tactile force or audible feedback that is dependent upon the user input. Encoders are able to transduce a location or relative position of a keycap as it is being pressed over time, and a signal is provided to actuators to cause them to provide feedback corresponding to the position of the keycap as it moves. The feedback can change the feel or sound of the keycap based on the keycap positions, time of operation, velocity, user identity, and other factors. Thus, the feel or sound of a keyboard or related input device can be adjusted electronically for efficient testing and increased user customization and feedback modes.

A key structure includes a membrane switch, a keycap and an elastic conduction element. The keycap is located over the membrane switch. The elastic conduction element is arranged between the keycap and the membrane switch. The elastic conduction element includes a supporting cover and a conduction post. The conduction post is connected with the supporting cover and disposed within an accommodation space of the supporting cover. The conduction post includes a first contacting part, a second contacting part and a concave part. While the keycap is moved downwardly relative to the membrane switch, the supporting cover is compressed by the keycap and the conduction post is correspondingly moved downwardly. Consequently, the first contacting part and the second contacting part are contacted with the membrane switch, and a suction force between the concave part and the membrane switch is generated.

A key structure including a base plate, a keycap disposed above the base plate, a scissor structure disposed between the base plate and the keycap, a first sleeve connected to the keycap, a second sleeve rotatably inserted into the first sleeve and a trigger member is provided. The first sleeve is located between the base plate and the keycap and has a guiding chute. The first sleeve is slidably sleeved on the second sleeve. The second sleeve has a guiding protrusion slidably disposed in the guiding chute and a notch opposite to the guiding protrusion, and the notch faces the base plate. The second sleeve is slidably sleeved on the trigger member. The trigger member has a trigger protrusion contacting the base plate, and the trigger protrusion is located between the base plate and the second sleeve.