| 摘要 |
Blocking apparatus, as well as a gearbox drive unit containing such a blocking apparatus, as well as a method for production of a gearbox drive unit such as this for blocking any rotary movement of a shaft ( 14 ) with respect to a housing ( 16 ) of the gearbox drive unit ( 10 ), having a first blocking element ( 32 ) which can rotate and having a second blocking element ( 34 ) which can be moved with respect to the first blocking element ( 32 ) by means of at least one electromagnet ( 44 ) and at least one return element ( 42 ), with the blocking elements ( 32, 34 ) engaging with one another in an interlocking form in the axial direction in the blocked state, and with at least one acoustic damping element ( 28 ) being arranged axially between the interlock ( 85 ) and the electromagnet ( 44 ).
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