Motor for sewing machine

Abstract

The invention discloses a motor for a sewing machine. The motor comprises a rotor and a stator which are installed on a motor main shaft. The rotor is composed of a motor casing and permanent magnets, the motor casing is formed by connecting two half casings, a cavity is formed inside after the two half casings are connected, and the corresponding permanent magnets are respectively uniformly distributed circumferentially on the two side walls of the cavity; the stator comprises a stator winding which is disposed in the cavity; and the outer wall of one side of the motor casing is provided with a connecting sleeve connected with a sewing machine main shaft. According to the invention, the motor casing rotates through the rotation of the rotor, air on the surface of the motor casing flows under the effect of a centrifugal force, so that a natural cooling effect is realized; and due to simple structure and small size, the motor directly replaces a belt for installation on the sewing machine main shaft, and is more simplified in structure and more convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to a motor for sewing machines. Background technique [0002] At present, most of the sewing machine motors are bottom-mounted belt-driven motors and machine head direct-drive internal rotation motors. Since the bottom-mounted motors use leather transmission, there is a certain amount of energy loss during the transmission process. Although they can save energy, the effect is not obvious. Due to the complex structure and heat dissipation loss of the machine head direct drive internal rotation motor, there is no obvious improvement in energy saving. Contents of the invention [0003] In order to solve the problems in the prior art, the object of the present invention is to provide a motor for sewing machines. [0004] In order to realize the above-mentioned purpose of the invention, the present invention adopts the technical scheme as follows: [0005] A permanent magnet ironless ...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the sewing machine motors are under-hung belt-driven motors and machine head direct-drive internal rotation motors. Since the under-hung motors use leather transmission, there is a certain amount of energy loss during the transmission process. Although they can save energy, the effect is not obvious.

Due to the complex structure and heat dissipation loss of the machine head direct drive internal rotation motor, there is no significant improvement in energy saving

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