A sub-block vibration-damping rotor

Abstract

A sub-block vibration-damping rotor includes a magnet, an outer core, an inn core, an engagement portion, and an elastic bonding portion. The outer iron core is provided with a through channel, a magnetic groove, a plurality of positioning gluing holes and a reinforcing hole which penetrate the outer iron core in the axial direction. The magnet is inserted in the magnetic slot, and the inner coreis embedded in the channel inside the outer core. A PBT material is injected into that reinforcing hole, and the PBT material is distributed at both ends of the outer iron core along the reinforcing hole to form a joint part, so that the out iron core and the magnet are molded into a one-time molded product by one-time injection molding of the PBT material. An elastic glue is injected into the positioning glue hole and an elastic glue part is integrally formed at both ends of the outer iron core and the inner iron core and between the outer iron core and the inner iron core respectively, so that the primary molded product and the inner iron core are secondary molded into a secondary molded product by the elastic glue. The elastic glue can cushion the force between the outer core and the inner core, so as to play the effect of vibration and noise reduction.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a segmented damping rotor. Background technique [0002] The rotors of low-power motors currently used, such as IPM rotors (rotors of embedded permanent magnet synchronous motors), generally do not have a vibration-damping structure. The main reason is that the motor rotor adopts an integrated iron core structure, which makes it difficult to design and implement a vibration-damping structure. . Therefore, while the IPM rotor structure brings greater power density to the motor, it also produces greater noise and vibration. The problem of equipment failure and consumption caused by the vibration of the rotor is becoming more and more prominent. How to reduce the vibration of the motor rotor has become a new topic. Contents of the invention [0003] The purpose of the present invention is to provide a segmented damping rotor, which solves the problem that the rotor in the prior a...

AI Technical Summary

Problems solved by technology

[0002] The rotors of low-power motors currently used, such as IPM rotors (rotors of embedded permanent magnet synchronous motors), generally do not have a vibration-damping structure. The main reason is that the motor rotor adopts an integrated iron core structure, which makes it difficult to design and implement a vibration-damping structure.

Therefore, while the IPM rotor structure brings greater power density to the motor, it also produces greater noise and vibration

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