Electromagnetic Brake Device
OwnerKiyoto Kobayashiinventor
Life of this patent
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Abstract
A deenergization operation type electromagnetic brake device (1), comprising a plurality of conical springs (8) for pressing an armature disk (5) against a fixed disk (7) through a friction disk (6) held therebetween. The conical springs (8) are inserted into the spring insertion recessed parts (15) of the yoke (11) of an electromagnet (4), and held between the bottom faces of the recessed parts and the armature disk (5) in a compressed state. Since the conical springs (8) are shorter than cylindrically coiled springs in a compressed state, the spring insertion recessed parts (15) can be made shallower and the thickness of the yoke (11) determined by the recessed parts can be reduced. As a result, the electromagnetic brake device (1) can be advantageously formed flat.
Claims4
An electromagnetic brake device, characterized in comprising:
- a friction disk;
- a fixed disk disposed on one side of the friction disk in a fixed position in a direction of a device central axial line;
- an armature disk disposed on the other side of the friction disk in a state allowing sliding in the direction of the device central axial line;
- a compression coil spring for urging the armature disk toward the friction disk;
- and
- an electromagnet able to attract the armature disk against a spring force of the compression coil spring;
- wherein
- the compression coil spring has a configuration wherein the coiled portion gradually increases or decreases in diameter in the direction of a central axial line;
- and
- the friction disk is attached to a rotating shaft that is to be controlled so that the disk will integrally rotate in a state allowing sliding in the direction of a central axis line of the shaft.
Dependencies are inferred from the claim text.