Step motor of stator with remote pair assisted magnetic pole

Abstract

The utility model relates to a stepping motor with a stator which is provided with remote paired auxiliary poles, which is characterized in that a pair of corresponding auxiliary poles are arranged beside the main pole assembled with the coil of the stator; and the main pole and the auxiliary poles far from the main pole form an obtuse angle respectively with the rotor pivot line, thus the resultant force of all function poles is reduced, and the tilted polarization of the rotor attracted by the stator is reduced effectively; however, the resultant moments of all function poles are increased, the rotation efficiency of the rotor attracted by the stator is improved when the stator is delivering energy; the magnetic force lines dissipated from the main pole to the auxiliary poles is utilized effectively; the pointless oscillation of the motor is reduced and the magnetic energy efficiency is fully utilized.

Description

technical field [0001] The invention relates to a stepping motor, in particular to a stepping motor with a stator having remote paired auxiliary magnetic poles. Background technique [0002] Because stepping motors can be programmed and precisely controlled, they have been widely used in many fields, such as business machines, precision machinery, instruments and components for motor vehicles, automatic opening and closing of doors and windows, or other automatic control equipment, regardless of the type , all show more precise and excellent performance than traditional motors. As shown in FIG. 1 , the inner rotor stepping motor of U.S. Patent No. 6,043,574 has a stator 10 with a plurality of "M"-shaped iron cores 12, 14, and central columns 122, 142 of the "M"-shaped iron cores 12, 14. Coil groups 124, 144 are set on the top. When the coil group 144 is enabled, the central column 142 will form, for example, an N magnetic pole near the end of the permanent magnet rotor 16. ...

AI Technical Summary

Problems solved by technology

[0006] However, when the size of the stepping motor is gradually miniaturized, the size of the rotor and the stator must be reduced, and the arc length corresponding to each rotor pole is shortened accordingly. That is, when the main yoke is composed of the body and the magnetic shoe, The distance between the main body and the magnetic shoe is also reduced accordingly. If you still want to maintain the original coil size, it will cause troubles in manufacturing, but reducing the number of turns will inevitably weaken the magnetic force

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