High-reliability hub motor with integrated structure

By designing a combination of flexible circulation tubes and extrusion blocks in the hub motor, the problem of cumbersome lubricant replacement is solved, and automatic circulation and cleanliness of the lubricant are achieved, improving the reliability and ease of maintenance of the motor.

CN121854569APending Publication Date: 2026-04-14WUXI SANDA MOTOR TECH CO LTD
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Patent Information

Application Number
CN202511946345.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-23
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

In existing hub motors, the lubricant replacement in the reducer is cumbersome, and it is difficult to guarantee the fluidity and cleanliness of the lubricant.

Method used

An integrated hub motor was designed, employing a combination of flexible circulation tubes and extrusion blocks. The circulation of lubricant is achieved through the rotation of the track wheel, while the intermittent extrusion blocks squeeze the circulation tubes to ensure the lubricant circulates within the planetary gear reducer, thus guaranteeing the fluidity and cleanliness of the lubricant.

Benefits of technology

It enables automatic circulation and replacement of lubricants, improves the fluidity and cleanliness of lubricants, simplifies the lubricant maintenance process, and extends the service life of lubricants.

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Abstract

The invention relates to a high-reliability hub motor with an integrated structure, and the motor comprises a support module which comprises a connecting box, and the connecting box is connected with a flexible circulating pipe; the power source module is mounted on the connecting box; the motion module comprises a planet gear speed reducer, the planet gear speed reducer is rotationally connected to the connecting box, and the power source module is matched with the planet gear speed reducer; the planet wheel speed reducer is provided with a track wheel at the output end, the circulating pipe is located in a gap between the outer side face of the track wheel and the inner wall face of the connecting box, two end openings of the circulating pipe extend into the planet wheel speed reducer, extrusion blocks are arranged on the outer side face of the track wheel, the gap has the interval difference, and the extrusion blocks intermittently extrude the circulating pipe. Through rotation of the track wheel, the extrusion block intermittently extrudes the circulating pipe, and circulation of a lubricating agent in the circulating pipe and the planetary gear speed reducer is achieved.
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