Electric hoist with speed control, a protective housing and a swivelable circuit board in the housing

An electric hoist with a motor-speed-regulated lifting speed, comprising:

• an electric motor;
• a gear unit;
• hoisting means for hoisting a load;
• a wheel around which the hoisting means is looped;
• load carrying means connected to the hoisting means for engaging the load, the electric motor, the gear unit, the wheel, the hoisting means and the load carrying means are connected with one another in a drive connection;
• electronic control means for controlling the electric motor;
• a manual control switch operatively connected with the electric control means;
• a gear box in which the gear unit is arranged;
• an external protective housing removably attached to the gear box, the electronic control means including control electronics and speed sensing equipment and being arranged in the external protective housing, the protective housing having an inner side with a base;
• a frequency converter having a power semiconductor, and a carrier for the semiconductor attached to the inner side of the base;
• a lower casing arranged between the protective housing and the gear box, one of the gear unit and the electric motor having a shaft with a shaft end arranged to project into the lower casing, the speed sensing equipment including a pulse wheel fixed on the shaft end that projects into the lower casing;
• a hinge fastened in one of the lower casing and the gear box;
• and,
• an electronic printed circuit board mounted to the hinge so as to be arranged in the lower casing and further so as to be swivelable out about the hinge when the protective housing is removed from the gear box.