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US 5,856,718 AGranted
Pressurization device for the rotor of a motor
AssigneeMinebea Co., Ltd.
InventorsKunitake Matsushita, Takayuki Yamawaki, Hiroshi Sano, Hiroaki Ezure
Life of this patent
Estimating the term…
Abstract
A cup shaped base 12 and a cap 13 are coupled, therein coil spring 14 is accommodated to form a holder 11, and the holder is interposed between the bearing 3 of a rotor shaft 4 and a sleeve 5. Different from being directly mounted on the rotor shaft, since the base 12 is provisionally held on the rotor shaft, the operation efficiency at the time of assembling the motor is outstandingly increased.
Claims5
A rotor pressurization device for a motor, comprising:
- a crown-shaped base and cap to be coupled through a spring with each other concentrically on the rotor shaft;
- a fixer extending in an axial direction, provided on a coupling surface of said base;
- and
- a pawl portion to be engaged with the fixer, provided on a coupling surface of said cap, wherein the fixer allows an axial movement of said cap and prevents rotation thereof.
1 more element
Dependencies are inferred from the claim text.