What is presented is a key module (110) for a keyboard. The key module (110) comprises a key tappet (220) comprising a coupling portion for coupling to a keycap for the key module (110). The key module (110) also comprises a module housing (230) formed to movably accommodate the key tappet (220), in order to enable a translational actuation movement of the key tappet (220) between a rest position and an actuated position relative to the module housing (230). The key module (110) further comprises a wire bracket (560) for providing tactile and/or acoustic feedback. The wire bracket (560) is elastically deflectable in the course of the actuation movement. The wire bracket (560) is bent with an overall bending angle of less than 360 degrees. The wire bracket (560) is fixed to the key tappet (220).

A key module includes an actuation element with a cam nose and a contactor unit with a contact nose movable in the direction of the movement axis and transverse to the direction of the movement axis. Also, a contact element is formed and arranged for establishing electric contact with the contact nose. Moreover, the housing element accommodates the contact element, the contactor unit and the actuation element, wherein the actuation element and/or the cam nose includes a constructive element formed to deflect the contact nose from a rest position adjacent to the contact element in the direction along and/or transverse to the movement axis upon a defined movement of the actuation element, then abruptly release it so that the movable contact nose returns to the rest position and strikes the contact element and/or the housing element. Electric contact with the contact element is established and acoustic noise is produced.

A rotary switch having a fixing body, a rotating body disposed in the fixing body, a cover coupled to an upper portion of the fixing body, and a first elastic body positioned under the cover to contact a plurality of protrusions formed on the rotating body is provided. The protrusions of the rotating body protrude in a side direction and radial direction of the rotating body to improve a rotational operation feeling and the quality of a rotational sound.

A key structure includes a base plate, a key cap, a positioning base, a positioning cover, and a spring. The key cap is disposed above the base plate and has a bottom surface. The positioning base is connected to the bottom surface of the key cap and has a positioning recess. The positioning cover is slidably connected to the positioning base, is inserted into the positioning recess, and includes a bottom portion and a side wall. The spring includes a first spring portion and a second spring portion. The first spring portion is located in the positioning recess and is in contact with the bottom surface of the key cap. The second spring portion is located in the positioning cover. An orthographic projection of the first spring portion on the bottom surface of the key cap is overlapped with an orthographic projection of the side wall of the positioning cover on the bottom surface of the key cap.

A key structure includes a base plate, a supporting element, a resilience arm and a keycap. The keycap includes a bulge. The supporting element is installed on the base plate. The resilience arm is connected with the supporting element and aligned with the bulge of the keycap. The keycap is connected with the supporting element. When the keycap is moved toward the base plate, the bulge is moved downwardly to push the resilience arm. After the resilience arm is pushed by the bulge, the resilience arm is subjected to elastic deformation and separated from the bulge. After the resilience arm is separated from the bulge, the resilience arm knocks on the keycap, so that a sound is generated.

A key structure includes a keycap and a scissors-type connecting element. The scissors-type connecting element is connected with the keycap. The scissors-type connecting element includes an inner frame and an outer frame. A first end of the inner frame is connected with the keycap. The outer frame is connected with the inner frame and swingable relative to the inner frame. A first end of the outer frame is connected with the keycap and located near a second end of the inner frame. A second end of the inner frame includes a first protrusion. A first end of the outer frame includes a second protrusion near the first protrusion. The first protrusion includes a first knocking surface. The second protrusion includes a second knocking surface. While the keycap is pressed down, the first knocking surface and the second knocking surface knock on each other.

Example aspects of the present disclosure are directed to an electrical switch with an adjustable tactile profile and/or an adjustable audio profile. One example includes an electrical switch with a pushbutton, a plunger, two metal contacts, a biasing spring, and a housing body. A user can press and move the pushbutton. The pushbutton's movement can move the plunger. The plunger's movement can cause the plunger to create or break a conductive connection between the metal contacts. Specifically, at least one unique actuator surface of two or more unique actuator surfaces on the plunger can engage the metal contacts. Changing the tactile profile can involve changing the unique actuator surface engaging the metal contacts. The conductive connection can indicate whether the electrical switch is in an unpressed or pressed state. The biasing spring can bias the electrical switch to the unpressed state. The housing body can contain the other components.

A switch device, having a reset assistant part arranged at the second end of a male leg, and a ram; the reset assistant part being provided with a holding station, both sidewalls of which are each provided with a saddle, both sides of the ram being provided, with a cam matching with the saddle, the ram is hung from the saddle through two cams. Accordingly, a photoelectrical type switch of scissor-leg structure is realized, and the key is enabled to have an obvious stage sense and sound.

What is presented is a key module (100) with a cover element (110) and a tappet (105) having a cam nose (135), wherein the tappet (105) is supported to be movable along a movement axis (200) by the cover element (110), wherein the tappet (105) has a cylindrical keycap supporting portion (160) in a passage area (210) in which it projects through the cover element (110) and has at least one rib (170) on a guiding portion (165) adjacent to the an keycap supporting portion (160) on an outside (167). Furthermore, the key module (100) includes a contactor unit (115) formed and arranged to be taken along by the cam nose (135), and a contact piece (120) formed and arranged for establishing electric contact with the contact nose (140). Moreover, the key module (100) has a housing element (130) for accommodating the contact piece (120), the contactor unit (115) and the tappet (105), wherein the housing element (130) has, for accommodating the guiding portion (165) of the tappet (105), at least one accommodating bowl (175) with at least one recess (1100) for accommodating the at least one rib (170) of the tappet (105).

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.