Elektromotorischer Stellantrieb zum Einsatz in technischen Einrichtungen, insbesondere in Kraftfahrzeugen

摘要

An actuating electromotor for technical devices, in particular in motor vehicles, has a small electric driving motor (2) with a motor shaft (4) provided with a gear meshing element (3) at least on one point, in particular at its end, a worm (5) of a worm gear slipped on the motor shaft (4) and a worm wheel (6) of the worm gear, preferably made of plastic, coupled to the worm (5) by meshing teeth. The worm is made of plastic and a catch (7) made of a material which is harder and can transmit higher torques than the plastic material of which the worm (5) is made is slipped on the motor shaft (4) and has a meshing element for meshing with the corresponding gear meshing element (3) of the motor shaft (4). The catch (7) has a worm meshing element at a substantially larger diameter than the diameter of the motor shaft (4) and the shaft (5) has, in turn, a catch meshing element which meshes with the worm meshing element of the catch (7).