Waterproof sealing device for motor casing outlet

Abstract

The invention discloses a waterproof sealing device for a motor casing outlet. The waterproof sealing device for the motor casing outlet comprises a shell, a screwed joint, a nut and a seal ring, wherein the shell is provided with a threaded hole; one end of the screwed joint is provided with a thread which is matched with the threaded hole; the nut is matched with the other end of the screwed joint; the seal ring is arranged at one side of the screwed joint matched with the threaded hole; both of the screwed joint and the nut are provided with a through hole; a motor lead can penetrate through the through hole and protrude; the shell is provided with the threaded hole, and the screwed joint is matched with the shell through a thread; the other end of the screwed joint is screwed up by the nut, and the seal ring is arranged at one end of the screwed joint contacted with the shell. Therefore, the tightness of the screwed joint and the threaded hole can be guaranteed, the motor lead can be conveniently led out, the structure is simple, and the waterproof sealing effect is good, so that water can be prevented from entering a motor, thus the service life of the motor and the vehicle performance reliability can be improved.

Description

technical field [0001] The invention belongs to a component part of a plastic-encapsulated motor, in particular to a waterproof sealing device for a wire outlet of a motor casing. Background technique [0002] The traditional electric vehicle motor lead wire is sealed at the outlet of the casing, mainly relying on the tight fit of the rubber injection head on the lead wire and the wire outlet of the motor casing to achieve the waterproof sealing effect of this part. This sealing method has been proved by practice. Since the motor lead wire is easily considered to be dragged during the process of motor packing and vehicle assembly, the rubber injection head will be deformed, and the joint between the injection head and the casing outlet hole will be loose. It will fail, greatly affecting the service life of the motor and the performance of the vehicle. Contents of the invention [0003] The object of the present invention is to provide a waterproof sealing device for the w...

AI Technical Summary

Problems solved by technology

This sealing method has been proved by practice. Since the motor lead wire is easily considered to be dragged during the process of motor packing and vehicle assembly, the rubber injection head will be deformed, and the joint between the injection head and the casing outlet hole will be loose. The waterproof effect will be reduced Will fail, greatly affecting the service life of the motor and the performance of the vehicle

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