Moving magnet type linear oscillation motor without inner stator

Abstract

The invention discloses a moving magnet type linear oscillation motor without an inner stator. The moving magnet type linear oscillation motor without the inner stator comprises stator cores and a permanent magnet arranged inside the machine shell, wherein the stator cores are C type cores, the upper tooth part and the lower tooth part of each C type stator core form an N pole and an S pole respectively after an armature winding is arranged, the permanent magnet is arranged between the two stator cores, tooth parts of the two stator cores right face each other, the N pole and the S pole of the two stator cores are opposite, the two poles of the permanent magnet right face the upper tooth parts of the two stator cores and the lower tooth parts of the two stator cores respectively.

Description

technical field [0001] The invention belongs to the field of linear motors, in particular to a linear oscillating motor with permanent magnets. Background technique [0002] The traditional technology uses transmission mechanisms such as cranks and leadscrews to convert the rotary motion of the rotary motor into linear reciprocating motion, which has problems such as complex structure, low efficiency, and poor mechanical reliability. Using a linear oscillating motor to realize linear reciprocating motion can save the transmission mechanism, reduce friction loss, and improve system efficiency and reliability. [0003] Linear oscillating motors include moving magnet linear oscillating motors, moving coil linear oscillating motors and moving iron linear oscillating motors. Among them, the moving magnet linear oscillating motor is a linear oscillating motor in which the permanent magnet material is used as the mover. The constant magnetic field generated by the permanent magnet...

AI Technical Summary

Problems solved by technology

[0005] The patent application number 200880001914 discloses a linear motor for a linear compressor, including an inner stator, an outer stator, and a mover composed of a plurality of permanent magnets. The inner stator is insulated from each other by stacking iron core blocks in the circumferential direction To be formed, the outer stator is formed by arranging core blocks at predetermined intervals in a circumferential direction and winding a coil around the core blocks, the permanent magnet is disposed between the inner stator and the outer stator with a predetermined gap, and Interacting and reciprocating along a straight line, its structure and iron core laminations are complex and difficult to maintain

[0006] The traditional moving magnet linear oscillation motor requires the inner stator to form a closed magnetic circuit, and the inner stator is radially distributed on the circumference, so there are disadvantages such as difficult stacking of the inner stator, difficult processing, high processing cost, and large volume of the whole machine.

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