Motor combined hermetically-sealed structure

Abstract

The invention discloses a motor combined hermetically-sealed structure. The structure comprises a shaft extension end (1) and an end cover (3) of a rotor, wherein a reinforced seal (4) is arranged between the end cover (3) and the shaft extension end (1); a movable seal is arranged between the end cover (3) at the axial outer side of the reinforced seal (4) and the shaft extension end (1); the movable seal comprises a movable sealing ring (5) which is arranged on the side of the shaft extension end (1) and a static sealing ring (6) which is arranged on the side of the end cover (3); an axial labyrinth sealing structure is arranged on the contact part of the movable sealing ring (5) and the static sealing ring (6). The motor combined hermetically-sealed structure has the beneficial effects that the motor combined hermetically-sealed structure is simple in structure, convenient to install and change and reasonable in design; and a combined waterproof structure of a non-contact type movable seal and a contact type static seal is adopted, water, mud and sand can be effectively prevented from entering a motor, the reinforced seal is slightly influenced, accordingly, the sealing performance of the reinforced seal is improved, the service life of the reinforced seal is prolonged, and the structure is reliable in performance.

Description

technical field [0001] The invention relates to the technical field of motor sealing, in particular to a combined motor sealing structure. Background technique [0002] The direct drive motor of new energy electric vehicles is directly placed at the bottom of the vehicle and connected to the drive shaft. The working environment of the motor is harsh and it is easily affected by water, mud and sand. If the front end bearing of the motor is not properly protected, it is very easy to cause damage to the bearing, which in turn leads to motor failure. In addition, due to the low position of the motor, it is easy to be soaked in water, which will also damage the motor and affect the operation of the vehicle. Since the motor shaft is a rotating part, it is difficult to ensure the waterproofness of the shaft penetration, and the motor is prone to water ingress and even burnt, which affects the service life of the motor. The existing motor sealing structure mostly adopts skeleton s...

AI Technical Summary

Problems solved by technology

[0002] The direct drive motor of new energy electric vehicles is directly placed at the bottom of the vehicle and connected to the drive shaft. The working environment of the motor is harsh and it is easily affected by water, mud and sand.

If the front end bearing of the motor is not properly protected, it is very easy to cause damage to the bearing, which in turn leads to motor failure

In addition, due to the low position of the motor, it is easy to be soaked in water, which will also damage the motor and affect the operation of the vehicle.

Since the motor shaft is a rotating part, it is difficult to ensure the waterproofness of the shaft penetration. The motor is prone to water ingress and even burns, which will affect the service life of the motor.

Existing motor seal structures mostly use skeleton seals, but the seals are easily affected by the environment, the life of the seals is shortened, and the motor shaft is easy to wear, so the motor needs frequent maintenance, which cannot meet the use requirements

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