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US 2003/0201680 A1Published application
Singular bearing mechanism of stepper motor
AssigneeNeocene Technology Co., Ltd.
InventorChia-Wei Lin
Life of this patent
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Abstract
A stepper motor with bearing mechanism comprised by a sole-singular bearing element is developed. The sole-singular bearing element is mounted and fixed at a hole of the motor frame-cup and/or motor-mount-plate for the fixation. The bearing element is with elongated length extended inward to the internal space within the inner part of the rotor of the stepper motor.
Claims11
A stepper motor, comprising:
- a casing having a chamber therein and a hole at a side thereof;
- a stator installed in the chamber of the casing having a magnetic field chamber at a center thereof and a plurality of coil windings to generate induced variable magnetic field in the magnetic field chamber while electric-current is applied to the coils;
- a rotor installed in the magnetic field chamber of the stator to be driven to rotate by magnetic interactions between the induced magnetic field and the polarized permanent magnetic field with the rotor;
- a sole-singular bearing fixed in the hole of the casing, with a bottom elongated section thereof extended inward to the chamber of the casing;
- and,
- a shaft running through the bearing and has an inner end fixed to the rotator 40 and a front end extended out of the casing such that the rotor rotates along an axis orientation of the shaft conducted by the sole-singular bearing and the shaft is driven to rotate by the rotator.
3 more elements
Dependencies are inferred from the claim text.