Patent ID: 6107714
Filing Date: 2000-08-22
Classification: B66B

Abstract:
A compact drive unit for a hoist, in particular for a hoist for use in an elevator, comprising a housing including an end wall, a motor having a stator with a stator winding mounted in said housing, a braking mechanism comprising at least a circulating brake body mounted in said housing, a transmission outside said housing and a continuous rotatable drive shaft forming a shaft of the motor and having a rotor mounted thereon which cooperates with said stator, said shaft supporting said brake body thereon and said continuous drive shaft also forming a transmission drive shaft of said transmission, said housing, said motor, said brake body and said transmission being axially arranged together, said rotatable drive shaft being rotatably supported by said end wall which extends between said motor and said brake body in said housing on the one hand and said transmission outside said housing on the other hand, said housing end wall having a cavity for receiving at least a portion of said transmission and said stator winding of said motor protruding into an annular cavity of said brake body thereby to provide a very compact drive unit in the axial direction of said continuous drive shaft.