What is presented is a key module (100) with a cover element (110) and a tappet (105) comprising 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) comprises a cylindrical keycap supporting portion (160) in a passage area (210) in which it projects through the cover element (110) and comprises 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) comprises a housing element (130) for accommodating the contact piece (120), the contactor unit (115) and the tappet (105), wherein the housing element (130) comprises, 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).

A button switch includes a base having a pillar, a cover disposed on the base, a sleeve, an arm adjacent to the pillar and an elastic member having upward-force-applying, extending-rod, and flexible-rod portions. The sleeve jackets the pillar, passes through the cover, and has first and second ribs. The upward-force-applying portion jackets the pillar and abuts against the sleeve and the base to drive the sleeve to move away from the base. The extending-rod portion extends from the upward-force-applying portion to be connected to the flexible-rod portion located under the first rib. When the sleeve is located at a high position, the second rib biases the arm to deform. When the sleeve is located at a low position, the second rib is misaligned with the arm. The flexible-rod portion crosses the first rib to be released and then collides with the cover to make sound as the sleeve is pressed.

A multi-mode mechanical key switch assembly has a housing and a stem supported in a base of the housing, the stem constrained to move, when depressed during a keystroke, from a resting state and toward the base of the housing. The assembly has a removable contact leaf spring seated in the housing and having a contact portion located in a travel path of the stem for engaging with the stem during the keystroke to provide audible and/or tactile feedback. The contact leaf spring is movable between a first seated position and a second seated position to change the characteristics of the feedback. Removal of the contact leaf spring from the housing enables the stem to travel its maximum keystroke distance without auditory or tactile feedback.

A surface mount device switch includes a pedestal, a flexible conducting element and a metal dome. The flexible conducting element is connected with the pedestal. There is a spacing distance between the flexible conducting element and a circuit board. The metal dome is located under a pedestal conducting part of the pedestal and the flexible conducting element. When the flexible conducting element is pushed by the metal dome, the flexible conducting element is deformable in the direction toward the circuit board. Since the collision between the metal dome and the flexible conducting element is alleviated, the noise is reduced. Consequently, the comfort of operating the touchpad module is enhanced. The present invention further provides a touchpad module and a computing device with the surface mount device switch.

A keyswitch structure includes a base having a positioning means, an cover combined with the base, a plunger with an cam portion movably coupling with the cover relative to the base, a restoring unit disposed between the base and the plunger to provide a restoring force to enable the plunger to move along a direction away from the base, a tactile feedback member having a positioning portion positioned by the positioning means and an extending arm extending across a moving path of the cam portion, and an adjusting unit being movable to drive the positioning portion to shift, so that the tactile feedback member has a first deformation or a second deformation, and a pressing force required for the cam portion to pass the extending arm when the plunger moves toward the base is changed.

An input device includes a fixed electrode, a movable electrode, and a movable member. The movable member is configured to elastically deform by receiving pressing force to relatively displace the movable electrode toward the fixed electrode. The movable member has an outer peripheral part. The outer peripheral part includes a suppression structure configured to suppress the movable member from being elastically deformed by the pressing force.

A multi-mode mechanical key switch assembly has a housing and a stem supported in a base of the housing, the stem constrained to move, when depressed during keystroke, from a resting state and toward the base of the housing. The assembly has a removable contact leaf spring seated in the housing and having a contact portion located in a travel path of the stem for engaging with the stem during the keystroke to provide audible and/or tactile feedback. The contact leaf spring is movable between a first seated position and a second seated position to change the characteristics of the feedback. Removal of the contact leaf spring from the housing enables the stem to travel its maximum keystroke distance without auditory or tactile feedback.

The present invention provides a key structure, including: a key pedestal, a key support shaft, a keycap, a rotating member, and an elastic element. The key pedestal is provided with a sleeve structure, a press member of the key support shaft is disposed in the sleeve structure, and the rotating member and the elastic element are disposed in the sleeve structure and located below the press member. When the keycap is pressed by an external force, the press member presses on the rotating member to drive the rotating member to rotate so as to generate a sound.

A key structure includes a base plate, a structural plate, a sound generation assembly and a keycap. The structural plate is installed on the base plate. The sound generation assembly includes a shaft body and a cantilever element. The cantilever element is protruded from a side of the shaft body. The structural plate is covered by the keycap. The keycap includes a first protrusion post and a second protrusion post. A first space and a second space are formed between the first protrusion post and the second protrusion post. The first space and the second space are not aligned with each other. The cantilever element is movable within the first space and the second space. Consequently, the feedback of a click sound is generated.

An adjustable keyboard includes a driving element, a first plate, a second plate and a plurality of keys. The second plate is disposed between the first plate and the keys, wherein the second plate has a plurality of key openings and the keys are respectively aligned with the key openings. The driving element is configured to drive the first plate to move, and thus a plurality of first guide portions on the first plate respectively push a plurality of second guide portions on the second plate so as to move the second plate and adjust the distance between each of the keys and the corresponding key opening.