Electric switch

An electric switch applied in an electric appliance having an electric motor, the electric switch comprising:

• a circuit board located in a switch housing of the electric switch, a switch path and a potentiometer track arranged on same surface of the circuit board;
• a first sliding contact configured to contact the switch path to switch a contact system;
• and
• a second sliding contact configured to contact the potentiometer track for setting the rotational speed and/or the torque of the electric motor;
• wherein the first sliding contact and the second sliding contact are moving in synchronism, the switch path and the potentiometer track placed on same surface of the circuit board are functioned differently and actuated by same way.

An electric switch applied in an electric appliance having an electric motor, the electric switch comprising:

• a plunger protruding from a switch housing and connected to an actuation element, a movement of the plunger configured to switch a contact system from an off position into an on position, the contact system being arranged within the switch housing and comprising a first sliding contact and corresponding switch path,
• the first sliding contact of the contact system arranged on the plunger within the switch housing on one side of the plunger as well as a second sliding contact, wherein the first and second sliding contacts are jointly movable by way of actuation of the plunger,
• a circuit board immovably arranged in the switch housing, wherein the switch path of the contact system and contact surfaces in a form of potentiometer track are arranged on one same surface of the circuit board;
• wherein a rotational speed or a torque of the electric motor is adjustable through interaction between the second sliding contact and the potentiometer track on the circuit board;
• and
• wherein in the on position, the first sliding contact of the contact system and the second sliding contact are in a same way contacted the associated switch path and the associated potentiometer tracks respectively, and switching the contact system from an off position into an on position and adjusting rotational speed or torque of the electric motor are both actuated by the movement of the plunger.