Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1986-07-16
1987-08-04
Salce, Patrick R.
Electrical generator or motor structure
Dynamoelectric
Rotary
188 711, 188171, B60T 1374, H02K 7102
Patent
active
046848380
ABSTRACT:
An electric motor has a disk brake which is designed as an electromagnetically operated spring-loaded brake, acts as a standstill brake and has a thin, elastically flexible brake disk (12) of spring steel. This brake disk (12) is immovably fixed on the motor shaft (2) between an axially movable, rotationally fixed armature (8) of the electromagnet and a stationary brake part (13) which forms the outer brake housing. The annular stator (4) of the electromagnet surrounds the motor shaft, with formation of a free annular space which offers room for further attaching parts, for example a tachometer generator and/or a phase-angle sensor, or else for a ball bearing carrying the shaft. Borne axially displaceably in the stator (4) is a coil (6) which, in the braking state, is pressed by compression springs (7) against the armature (8), which for its part presses an annular rim zone (12a) of the brake disk (12), with elastic deformation of the same, against the stationary brake part (13). When the coil (6) is excited, the stronger magnetic force pulls the armature (8) back from the brake disk (12). The thin brake disk (12) is characterized by a small moment of inertia, owing to its low weight.
REFERENCES:
patent: 2911548 (1959-11-01), Joy et al.
patent: 3665231 (1972-05-01), Wendler
patent: 3826342 (1974-07-01), Noly
patent: 4096404 (1978-06-01), Sukhanov et al.
Mavilor Systemes S.A.
Rebsch D. L.
Salce Patrick R.
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