GEARING MECHANISM

摘要

The invention relates to a gearing mechanism (1) that serves particularly as a worm gear for assemblies for outside force activated adjustment of elements of a motor vehicle, comprising a housing component (9) and a shaft (2) mounted in the housing component (9). The shaft (2) is driven rotating relative to the housing component (9) with regard to a rotation axis (8) in a first rotation direction (11) and in a second rotation direction (12) opposite the first rotation direction (11). There is also a wrap element (15) that wraps the shaft (2) multiple times. The wrap element (15) is designed as a spring-elastic wrap element (15). A first end (19) of the wrap element (15) is fastened in a stationary manner to the housing component (9). This can achieve a self-locking of the shaft (2) dependent on the rotation direction. It is also possible that an inward oriented friction surface (31) is provided and that the wrap element (15) is arranged within the inward oriented friction surface (31) at least in sections in order to interact with the friction surface (31). This can likewise achieve a self-locking of the shaft (2) dependent on the rotation direction. There is another design variant in that a brake element (41) is provided, the shaft (2) comprises a brake element receptacle (42) that at least partially accommodates the brake element (41) and a contact surface (43) is allocated to the brake element (41) for interacting with the brake element (41). A rotation direction independent self-locking of the shaft (2) can be likewise thus attained by the interaction of the brake element (41) with the contact surface (43).