Patent ID: 7921977
Filing Date: 2011-04-12
Classification: F16D,H02K,Y10T

Abstract:
1. A locking device ( 30 ) for preventing a rotating motion of a shaft ( 14 ) in relation to a housing ( 16 ) of a transmission/drive unit ( 10 ), having a first locking element ( 32 ) and a second locking element ( 34 ) that an electromagnet ( 44 ) and at least one return element ( 42 ) are able to move axially in relation to the first locking element ( 32 ) in order to produce a rotationally fixed connection between the first and second locking elements ( 32 , 34 ), wherein the electromagnet ( 44 ) has an inner pole ( 47 ) that is encompassed by an electric coil ( 45 ), which inner pole ( 47 ) has an axial extension ( 51 ) that extends into a corresponding opening ( 64 ) of the second locking element ( 34 ) in order to produce an axial guidance and centering, and wherein the second locking element (