Keypad

A keypad, comprising:

• a base, having a through hole;
• an actuator, movably located in through hole so as to be moved between an initial position and a pressed position with respect to the base;
• a first elastic member, located between and connected to the base and the actuator in order to provide force on the actuator to move the actuator towards the initial position;
• a pivotal mechanism, pivotably and linearly movably disposed on the actuator so as to be moved between a withdrawn position and a protruding position;
• and
• a second elastic member, located between and connected to the actuator and the pivotal mechanism in order to provide force on the pivotal mechanism to move the pivotal mechanism towards the protruding position;
• wherein, the base has at least one stop block and at least one recess connected to each other on an inner surface forming the through hole, the pivotal mechanism has at least one tooth;
• when the actuator is in the initial position, the pivotal mechanism is in the protruding position;
• while the actuator is moved to the pressed position from the initial position, the at least one tooth of the pivotal mechanism is stopped by the at least one stop block so that the pivotal mechanism is pivoted and then linearly moved to the withdrawn position, and then the at least one tooth enters into the at least one recess, enabling the pivotal mechanism to the protruding position and press a switch;
• and
• wherein the pivotal mechanism comprises a pivotal plunger, a touch pad and a third elastic member, the pivotal plunger is pivotably and linearly movably disposed on the actuator, the touch pad is movably disposed on the pivotal plunger so as to be moved close to or away from the pivotal plunger, and the third elastic member is located between and connected to the pivotal plunger and the touch pad so as to force the pivotal plunger and the touch pad to be moved away from each other.