Ultrasonic surgical instruments including a handle housing, a switch frame, and a switch assembly are disclosed. The switch assembly may include a first switch arrangement movably supported on a distal portion of the handle housing and selectively movable relative to a first switch contact supported by the switch frame. The switch assembly may further include a second switch arrangement including a right switch button movably supported on a right side of the handle housing and selectively movable relative to a right switch contact supported by the switch frame, and a left switch button movably supported on a left side of the handle housing and selectively movable relative to a left switch contact supported by the switch frame. The first and second switch arrangements may be configured to be selectively actuatable by a single hand supporting the handle housing.

A switch device includes an operation unit to receive an operation performed by a user, a movable contact that is connected to a ground circuit and moves according to an operation performed on the operation unit, plural fixed contacts whose state of connection to the movable contact is switched according to an operation position of the operation unit, plural resistors connected in series in such a manner that one end is connected to a power supply, another end is connected to one of the plural fixed contacts, and a node formed by connecting in series is connected to the remaining of the plural fixed contacts, and a control unit that includes an input terminal connected to a first node between the fixed contact connected closest to the power supply and the resistor and determines the operation position of the operation unit based on voltage detected through the input terminal.

A switch device includes an operation unit to receive an operation performed by a user, a movable contact that is connected to a ground circuit and moves according to an operation performed on the operation unit, plural fixed contacts whose state of connection to the movable contact is switched according to an operation position of the operation unit, plural resistors connected in series in such a manner that one end is connected to a power supply, another end is connected to one of the plural fixed contacts, and a node formed by connecting in series is connected to the remaining of the plural fixed contacts, and a control unit that includes an input terminal connected to a first node between the fixed contact connected closest to the power supply and the resistor and determines the operation position of the operation unit based on voltage detected through the input terminal.

The present disclosure provides a rocker device with the automatic center returning function. The rocker device adopts the magnetic sensor to acquire and output the angle information of the rocker rotation, and realizes the rocker automatically returning to the center through the magnet fixedly connected to the rocker and the structure design of the outer magnet ring. Additionally, below the rocker, the outer magnet is arranged on the part of the fixed member wrapping the outer side of the magnet ring and supporting the rocker, so that the press detection and the pressing back to the center for the rocker can be realized in conjunction with the additionally arranged magnetic sensor. Additionally, through adjusting the size of the magnets fixedly connected to the rocker and the size of the magnet ring, the feeling of the rocker device can be conveniently adjusted.

The present disclosure provides a rocker device with the automatic center returning function. The rocker device adopts the magnetic sensor to acquire and output the angle information of the rocker rotation, and realizes the rocker automatically returning to the center through the magnet fixedly connected to the rocker and the structure design of the outer magnet ring. Additionally, below the rocker, the outer magnet is arranged on the part of the fixed member wrapping the outer side of the magnet ring and supporting the rocker, so that the press detection and the pressing back to the center for the rocker can be realized in conjunction with the additionally arranged magnetic sensor. Additionally, through adjusting the size of the magnets fixedly connected to the rocker and the size of the magnet ring, the feeling of the rocker device can be conveniently adjusted.

A paddle-style handset control and a height adjustable desk; the paddle-style handset control includes a bracket and paddle piece mounted on the bracket, the paddle piece including a horizontal connecting section in the bracket and a manipulating section extending out of the bracket; the paddle-style handset control further includes a two-way switch including a switch body installed on the paddle piece and a rocker, the switch body includes up and down contactors; the rocker is provided thereon with a rotating shaft, one end of the rocker being connected to the switch body via the rotating shaft, another end restrained on the bracket; the paddle piece tilts driving the rocker to rock relative to the switch body thereby triggering the up or down contactors. In the paddle-style handset control, the two-way switch as an integrated structure is mounted on the paddle piece, which facilitates assembly of the paddle-style handset control.

A paddle-style handset control and a height adjustable desk; the paddle-style handset control includes a bracket and paddle piece mounted on the bracket, the paddle piece including a horizontal connecting section in the bracket and a manipulating section extending out of the bracket; the paddle-style handset control further includes a two-way switch including a switch body installed on the paddle piece and a rocker, the switch body includes up and down contactors; the rocker is provided thereon with a rotating shaft, one end of the rocker being connected to the switch body via the rotating shaft, another end restrained on the bracket; the paddle piece tilts driving the rocker to rock relative to the switch body thereby triggering the up or down contactors. In the paddle-style handset control, the two-way switch as an integrated structure is mounted on the paddle piece, which facilitates assembly of the paddle-style handset control.