Outside stator for planar motor

Abstract

The disclosed lateral stator is composed of wire winding body, magnetic core and molding body. The molding body comprises first, second, and third molding parts. First molding part is integrated on outer circumference face of the wire winding body. Second molding part formed with first molding part continuously is integrated on two side faces of interconnecting piece of magnetic core. Third molding part formed with second molding part continuously is integrated on partial outer circumference face. Tail end of molding part is made in shape of zigzag or triangle. The invention increases contact area of magnetic core, reduces press on magnetic core, reduces distortion of magnetic core and wire winding body farthest caused by molding press and shrink force. Thus, gap between outer stator and inner stator is kept constant.

Description

technical field [0001] The present invention relates to a planar motor, in particular to a planar motor capable of preventing the winding body or the magnetic core from being deformed when the surface molding is carried out on the winding body and the magnetic core arranged radially on the outer circumference of the winding body the outer stator. Background technique [0002] Generally, a planar motor is a motor that can change the three-dimensional structure magnetic field of a three-dimensional motor into a planar magnetic field, place a planar rotor assembly above a planar stator assembly, and make the rotor assembly move linearly under the change of the magnetic field. In this planar motor, the stator assembly consists of a cylindrical outer stator and an inner stator with a certain gap between the outer stator and the inner stator. The rotor assembly is installed between the outer stator and the inner stator, which can move back and forth. A coil may be installed on o...

AI Technical Summary

Problems solved by technology

However, as shown in FIG. 3, this prior art planar motor has a problem that part of the magnetic core 11b may be deformed due to the injection pressure generated when the molding material is injected or the shrinkage force generated when the molding material is hardened. Therefore, it is pressed into the center direction of the outer stator 11, so that the gap between the outer stator 11 and the inner stator 12 becomes smaller, resulting in conflict between the stator 10 and the rotor 20, which reduces the reliability and efficiency of the motor.

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