초록 ▼

A brake mechanism includes an inner assembly secured to a motor shaft and an outer assembly surrounding the inner assembly. The outer assembly includes a permanent magnet or an electromagnet between a pair of ferromagnetic pole structures. The inner assembly also includes a pair of ferromagnetic pol

A brake mechanism includes an inner assembly secured to a motor shaft and an outer assembly surrounding the inner assembly. The outer assembly includes a permanent magnet or an electromagnet between a pair of ferromagnetic pole structures. The inner assembly also includes a pair of ferromagnetic pole structures. During operation of the brake mechanism, the inner assembly is rotated relative to the outer assembly, and the pole structures cause a magnetic field within the inner assembly to pulsate. The pulsating magnetic field causes the inner assembly to apply a braking torque to the shaft.

대표청구항 ▼

[ What is claimed is:] [1.] A brake mechanism comprising:an inner assembly including a pair of spaced apart inner ferromagnetic pole structures, each inner pole structure including a plurality of inner salient ferromagnetic poles extending radially outwards; andan outer assembly surrounding the inne

[ What is claimed is:] [1.] A brake mechanism comprising:an inner assembly including a pair of spaced apart inner ferromagnetic pole structures, each inner pole structure including a plurality of inner salient ferromagnetic poles extending radially outwards; andan outer assembly surrounding the inner assembly, the outer assembly including a pair of spaced apart outer ferromagnetic pole structures, each outer pole structure including a plurality of outer salient ferromagnetic poles extending radially inwards towards the inner assembly;one of the inner and outer assemblies further including a flux source between its pole structure pair;the other of the inner and outer assemblies further including a ferromagnetic bridge between its pole structure pair;magnetic air gaps being defined by outer surfaces of the inner and outer poles when the outer surfaces of the inner and outer poles are in opposing relationships.