A key stabilizer is provided, in which the key stabilizer includes a keycap and a balance bar. The keycap has a bottom surface and two protruding portions disposed thereon. The keycap moves back and forth along a vertical direction between a top position and a bottom position. Each of the two protruding portions has an engaging portion at the end thereof. The bottom surface faces the bottom position, and the two protruding portions are arranged along a horizontal direction that is perpendicular to the vertical direction. The balance bar has a hinge portion and two side portions respectively connected to both ends of the hinge portion. The hinge portion is positioned on a rotation axis parallel to the horizontal direction. The end of each of the two side portions that is away from the hinge portion is inserted into the engaging portion.

A key stabilizer is provided, in which the key stabilizer includes a keycap and a balance bar. The keycap has a bottom surface and two protruding portions disposed thereon. The keycap moves back and forth along a vertical direction between a top position and a bottom position. Each of the two protruding portions has an engaging portion at the end thereof. The bottom surface faces the bottom position, and the two protruding portions are arranged along a horizontal direction that is perpendicular to the vertical direction. The balance bar has a hinge portion and two side portions respectively connected to both ends of the hinge portion. The hinge portion is positioned on a rotation axis parallel to the horizontal direction. The end of each of the two side portions that is away from the hinge portion is inserted into the engaging portion.

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.

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 key input device includes: keys each including a contact portion provided on its back surface; a holder holding the keys movably; a conductive member opposed to the holder; and a circuit board having a switch surface and switches arranged on the switch surface and each contactable with the contact portion of a corresponding key. The conductive member is interposed between the switch surface and the holder. The holder has first through holes, and the conductive member has second through holes. At least one of the contact portion and the switch is inserted in a corresponding one of the first through holes, and at least one of the contact portion and the switch is inserted in a corresponding one of the second through holes.

A key input device includes: keys each including a contact portion provided on its back surface; a holder holding the keys movably; a conductive member opposed to the holder; and a circuit board having a switch surface and switches arranged on the switch surface and each contactable with the contact portion of a corresponding key. The conductive member is interposed between the switch surface and the holder. The holder has first through holes, and the conductive member has second through holes. At least one of the contact portion and the switch is inserted in a corresponding one of the first through holes, and at least one of the contact portion and the switch is inserted in a corresponding one of the second through holes.

The computer keyboard operable in motion includes keys and control circuitry, and communication means to connect the keyboard to an in-motion operable mobile computer. The keyboard has one key column for the thumb; one key column for the index finger; and one key column for the middle finger; one key column for the ring finger; one key column for the little finger. The keys on which the tips of the fingers rest at the same time do not form a straight row of keys. The keyboard enables not only touch typing but also voice/key interface mode operation of the smartphone to which the keyboard is connected. In the voice/key interface mode, the computer uses voice and the user uses key inputs to interact each other.

The computer keyboard operable in motion includes keys and control circuitry, and communication means to connect the keyboard to an in-motion operable mobile computer. The keyboard has one key column for the thumb; one key column for the index finger; and one key column for the middle finger; one key column for the ring finger; one key column for the little finger. The keys on which the tips of the fingers rest at the same time do not form a straight row of keys. The keyboard enables not only touch typing but also voice/key interface mode operation of the smartphone to which the keyboard is connected. In the voice/key interface mode, the computer uses voice and the user uses key inputs to interact each other.

In some examples, techniques are provided for quick haptic feedback, without the use of a controller, which is local to individual, non-actuating keys, such as keys of a thin keyboard or keypad. The haptic feedback may be in the form of a simulated key-click feedback for an individual key that is pressed by a user such that the finger used to press the key feels the tactile sensation. The haptic feedback mimics the tactile sensation of a mechanical key (e.g., buckling spring, pop-dome key switch) to give a user the perception that they have actuated a mechanically movable key.

The dual-switch housing is configured to secure two separate switches on a rail interface system and includes an actuator that allows an end-user to activate both switches individually or simultaneously. An example dual-switch housing comprises: a housing including rail clamp portions for removably mounting the dual-switch housing to the rail interface system; and an actuator configured to actuate the first and second switches individually or simultaneously. The actuator comprises a first actuation button configured to actuate only the first switch, a second actuation button configured to actuate both the first switch and the second switch, and a third actuation button configured to actuate only the second switch.