US Patent 10192698 Input device with adjustable force level

An input device with an adjustable force level is provided. The input device includes a circuit board and a key structure. The key structure includes a key body, a casing and a pressure-adjustable elastic receptacle. The pressure-adjustable elastic receptacle is partially or completely accommodated within the casing and sustaining the key body. When the key body is moved downwardly, a resisting force to resist the key body is provided by the pressure-adjustable elastic receptacle and the force level of the resisting force is adjusted by the user. When a force with the force level is applied to the key body by the user, a switch of the circuit board is triggered.