Multipath magnetic circuit unit lamellar permanent-magnet linear oscillating motor

Abstract

The invention relates to a multipath magnetic circuit unit lamellar permanent-magnet linear oscillating motor comprising a stator part and a rotor part; the stator part comprises a tubular cavity and magnetic circuit units; the tubular cavity has outer surfaces in a regular polyhedron; the magnetic circuit units are arranged on the outer surfaces; each magnetic circuit unit comprises a middle magnetic conductor and two magnetic conductors, wherein the longitudinal section of the middle magnetic conductor is in an H shape, a column of the middle magnetic conductor is wound by a coil, the two magnetic conductors are arranged at both sides of the middle magnetic conductor, and a strip-shaped air gap is arranged between the middle magnetic conductor and each of the magnetic conductors; the rotor part comprises a plurality of lamellar permanent magnets and symmetrical type magnetic circuits, wherein the plurality of lamellar permanent magnets are vertically arranged on connecting pieces ina radial shape, are inserted into a rectangular hole positioned in the connecting piece positioned at one end of the tubular cavity and extend into a rectangular hole positioned in the connecting piece positioned at the other end of the tubular cavity; each magnetic circuit unit is positioned among the lamellar permanent magnets; the symmetrical type magnetic circuits are formed by symmetrically magnetizing the middle magnetic conductor and the magnetic conductors along the length direction of the middle magnetic conductor; the coil generates a magnetic field by being electrified with alternating current and forms a magnetic field with alternate positive and negative directions in the strip-shaped air gaps through the symmetrical type magnetic circuits; and the rotor does reciprocating oscillation motion along the length directions of the strip-shaped air gaps in the strip-shaped air gaps under the action of the magnetic field.

Description

technical field [0001] The invention relates to the field of linear motors. Background technique [0002] Linear oscillating motor refers to a motor that performs high-frequency reciprocating linear motion. As a kind of linear motor, it also has various advantages of linear motors, such as electric energy directly generates electromagnetic thrust, directly pushes the load to do linear motion, and does not need the conversion device of traditional rotary motor to convert rotation into linear motion, which improves the transmission Efficiency, reduced mechanical wear, etc. Linear oscillating motors are often used as driving mechanisms for small reciprocating compressors, sewing machines, electric hammer machines and other equipment due to the reciprocating oscillating motion of their movers. [0003] There are two main classifications of linear oscillating motors: linear induction oscillating motors and linear synchronous oscillating motors. Compared with linear induction os...

AI Technical Summary

Problems solved by technology

The moving coil linear oscillation motor is that the mover is composed of a coil, and the excitation is provided by another coil, or by a fixed permanent magnet component. The advantage of this type of motor is that it is easy to control the stroke, and there is no radial force and torque on the mover. There is no axial force at no-load, and there is no hysteresis loss, but the driving force is relatively small, and the lead wire problem is not easy to solve, which directly affects the service life of the motor, and due to the energy consumption caused by the coil energization, the efficiency is relatively low. lower

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