Bearing electric corrosion prevention structure of plastic package motor

Abstract

The invention is suitable for the motor field and provides a bearing electric corrosion prevention structure of a plastic package motor. The structure comprises a first bearing bracket, a second bearing bracket arranged on the other side of a stator assembly, a plastic package shell packaged outside the stator assembly and the first bearing bracket and a metal conduction component which is conductively connected between the first bearing bracket and the second bearing bracket. The metal conduction component is an integrated structure and comprises a first conductor which is packaged in the plastic package shell and is conductively connected to the first bearing bracket, a second conductor which is arranged outside the plastic package shell and is conductively connected to the second bearing bracket and a flexible conductive body which is conductively connected between the first conductor and the second conductor and can be bent so as to adjust an included angle between the first conductor and the second conductor. The metal conduction component is conductively connected to the first bearing bracket and the second bearing bracket so that conductive reliability is high. Installation is convenient. Aging failure and shedding phenomena are not generated. Long-term reliability of bearing electric corrosion prevention performance of the plastic package motor is guaranteed.

Description

technical field [0001] The invention belongs to the field of motors, in particular to a bearing electric corrosion prevention structure of a plastic-sealed motor. Background technique [0002] Conventional plastic-encapsulated brushless DC motors generally have the problem of electric corrosion of bearings. In order to solve this technical problem, the prior art proposes a technical proposal of installing conductive tape between the bearing brackets on both sides. Specifically, the two ends of the conductive tape are respectively bonded to the bearing brackets on both sides, so that the electrical connection of the bearing brackets on both sides can be realized through the conductive tape, which can relieve the electric corrosion of the bearings to a certain extent. However, this scheme In the specific application, there are still the following deficiencies: 1) relying solely on the bonding of the conductive tape and the bearing bracket to realize the installation and fixati...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a bearing electric corrosion prevention structure for plastic-sealed motors, which solves the technical problems of the existing plastic-sealed motors in which the bearing electric corrosion prevention structure is installed stably and reliably, the installation process is complicated, and the long-term reliability of bearing electric corrosion resistance is low.

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