A switch assembly includes a manually operable push button, an elastic element, a rotatably mounted transmitter, and a microswitch, wherein the push button includes a pusher, which, upon actuation of the push button, exerts a first force on the elastic element, the elastic element connects to a force arm of the transmitter and is configured to transmit at least a part of the first force onto the force arm, and set the transmitter in a rotation, and the transmitter further includes a load arm configured to exert a second force on the microswitch during rotation of the transmitter.

Described herein are thin keyboard and thin keyboard overlay, as well as novel key assembly for uses on keyboards and keyswitches. The key assembly includes a top plate, a movable keycap, a support plate and flexible rods embedded in the sup port plate acting as springs. The underside of the movable keycap has at least one or several tapered protrusions which are located above the flexible rods. A vertical downward force on the movable keycap will enable the protrusion to flex the rods horizontally, thus creating a spring like mechanism that will return the movable keycap to its original position once the vertical force is removed.

Disclosed are systems and methods associated with a touch-sensitive input device including a plurality of keys, wherein each key of the plurality of keys includes at least one spring. Such a spring may include a substantially planar peak located at a central portion of the spring, a first substantially arcuate leg extending from the peak in a first direction, and a second substantially arcuate leg extending from the peak in a second direction substantially perpendicular to the first direction. In one embodiment, a resistive force provided by the at least one spring decreases after the peak travels a first distance from an initial position of the peak. In such an embodiment, the first distance is less than or equal to approximately of a range of travel of the peak.

A switch assembly includes a manually operable push button, an elastic element, a rotatably mounted transmitter, and a microswitch, wherein the push button includes a pusher, which, upon actuation of the push button, exerts a first force on the elastic element, the elastic element connects to a force arm of the transmitter and is configured to transmit at least a part of the first force onto the force arm, and set the transmitter in a rotation, and the transmitter further includes a load arm configured to exert a second force on the microswitch during rotation of the transmitter.

The embodiments herein show a switching device/mouse device activated by proximal phalanx of a finger(s). The switching device/mouse is ergonomically designed to prevent carpal-tunnel effect and bending of fingers. The switching device/mouse includes an enclosure having a top wall, a bottom wall, and sidewalls. The switching device/mouse includes an upper levers/elongated buttons pivotally supported by the top wall. The upper levers/elongated buttons are elevated surfaces to better support a user's fingers in a rest position. The mouse is operated by pressing down on the elevated surfaces of the upper levers with the proximal phalanx of the fingers without bending the fingers.

A finger activated switching device has an enclosure with a top wall and a bottom wall, the bottom wall movable on a supporting wall. An upper lever is pivotally joined to the enclosure, and is upwardly spaced apart from the top wall in a first rest position yet is upwardly displaceable using finger pressure from below. A lower lever is pivotally joined to the enclosure directly below the upper lever, and spaced apart from it in a second rest position yet is downwardly displaceable using finger pressure. When the levers are displaced from their rest positions a restoring element moves the levers back to their rest positions. Switching elements positioned in force transmission mechanisms with the levers provide electrical switching actions when the levers are displaced.

The disclosure provides a key device including a housing, a soft material layer, and a key component. The housing has at least one first assembly hole. The soft material layer is disposed on the housing and has at least one second assembly hole. The key component includes at least one key body and an elastic frame. The key body is exposed to the housing through the second assembly hole and the first assembly hole correspondingly. The elastic frame is connected with the key body and squeezes the soft material layer. The key device of the disclosure has waterproof and dustproof functions and may effectively reduce the cost.