A switch module with a built-in structure of anti-surge and dual disconnection mainly comprises an overcurrent protection switch having plates and insulating elements for anti-surge and dual disconnection structure ingeniously built inside a heat-resisting housing. The switch module has a first connecting point and a second connecting point for operation. When overvoltage occurs, temperature of at least one metal oxide varistor would instantly rise up to a degree higher than the melting point thereof, melting at least one thermo-sensitive piece, loosening at least one spring element, displacing a pushing element and thus forcing the connecting points detaching from each other to turn off the switch and stop supplying electricity power; meanwhile, insulating elements would isolate conductive components such as thermo-sensitive pieces, spring elements and plates to further ensure a complete disconnection and more of electricity safety.

When an operation body is urged upward by a flat spring and is in a return position, a projection disposed on the operation body is held between opposing positioning portions and the position of the operation body in an X-direction is set. When the operation body is pressed at a position away from a central portion of the operation body in the X-direction, the operation body pivots on one of retaining structures downward. At this time, the projection moves away from the opposing positioning portions, and resistance against a pressing operation can thereby be reduced.

A pushbutton switch includes a pushbutton unit and a resilient member. The pushbutton unit includes a mounting seat for being in proximity to an activator of a switch assembly, and a pushbutton covering the mounting seat. The resilient member has a switch contactor adjacent to the activator, two resilient arms extending from the switch contactor, and two abutment segments connected respectively to the resilient arms and engaging the limiting seat. When the pushbutton is pressed to move toward the limiting seat, the resilient arms are resiliently deformed to have a resilient force for urging the pushbutton away from the limiting seat, and the switch contactor is driven by the pushbutton to contact and move the activator.

A key that includes a body with an optically transmissive or light permeable region and an optical film coupled to or carried by the light permeable region is disclosed. The key also includes a resilient structure coupled to the body. The key can be assembled or coupled to, or disposed relative or adjacent to, a display screen. The key also includes a switch actuator (e.g., an electromechanical switch actuator or contact element). Displacement of the key, more specifically the body of the key, displaces the switch actuator for actuating a switch. The resilient structure is configured to bias the body at a first position. The body can be actuated or displaced from the first position to a second position for effectuating corresponding displacement of the switch actuator and actuation of the switch. The resilient structure provides a positive tactile feedback upon user-directed or user-controlled actuation or displacement of the body.

Provided is a microswitch capable of switching between a sound state and a silent state, comprising a base (1) and a cover (2), a guide core (4) being provided in an accommodating cavity formed by combining the cover (2) and the base (1), and further comprising a turn-on mechanism (5) and a sound state/silent state switching mechanism (6), the turn-on mechanism (5) comprising a first turn-on terminal (51) and a second turn-on terminal (52) separately provided on the base (1), and an elastic assembly (53) provided in the accommodating cavity, the elastic assembly (53) comprising an elastic piece (531) provided on the first turn-on terminal (51) and located at the bottom of the guide core (4), an arched elastic piece (532) upwards supporting the elastic piece (531), and a turn-on contact piece (533) located above the second turn-on terminal (52) and extending towards the side away from the sound state/silent state switching mechanism (6); the sound state/silent state switching mechanism (6) comprising a sound production knock block (61),a toggle-type switching assembly (62), an upper soft portion (63) connected to the toggle-type switching assembly (62) and a lower soft portion (64) connected to the toggle-type switching assembly (62) and located below the upper soft portion (63). The functions of the mechanisms do not interfere with each other, and the turn-on/off function and the function of switching between a sound state and a silent state are achieved with high accuracy.