Outer rotor air-cooled joint module

By designing an external rotor air-cooled joint module, utilizing the structure of the rotor yoke and stator closely attached to the shell and impeller-type air cooling, the heat conduction path and airflow are optimized, solving the problem of low heat dissipation efficiency of robot joint modules under high load, achieving efficient air cooling, and ensuring the stable operation of motors and reducers.

CN224527263UActive Publication Date: 2026-07-21HANGZHOU VOLT ROBOT TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU VOLT ROBOT TECHNOLOGY CO LTD
Filing Date
2025-06-30
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing robot joint modules have low heat dissipation efficiency under high load and high frequency operation, which leads to demagnetization of motor magnets, aging of winding insulation, lubrication failure of reducers and deterioration of electronic components, making it difficult to meet the requirements of high power density, lightweight and compact structure.

Method used

It adopts an external rotor air-cooled joint module design, with the rotor yoke and stator closely attached to the housing. It is equipped with an axial blowing impeller structure and fan-shaped holes to form a high-speed airflow, optimize the heat conduction path and enhance airflow, and realize active air-cooling cycle.

Benefits of technology

It significantly improves heat dissipation capacity within a compact space, while balancing high power output with lightweight and compact design goals, avoiding the drawbacks of adding extra fans and complex cooling systems.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an outer rotor air -cooled joint module relates to robot joint technical field, including speed reducer subassembly, rotor yoke, front end cover and middle shell, the coaxial fixed connection of speed reducer subassembly's center wheel and rotor yoke, the inside fixed of rotor yoke is provided with rotor magnet steel, the inner wall of middle shell is closely connected with stator core, and rotor magnet steel and stator core cooperate and drive, and rotor yoke is equipped with end face part, and end face part is equipped with sector hole and protruding impeller piece, and impeller piece sets up in the hole wall both sides of sector hole, and rotor yoke and middle shell all have the heat conduction performance, and the front end cover has a plurality of ventilation holes. The utility model provides an outer rotor air -cooled joint module, in the compact structure layout, and rotor and stator are close to the shell piece, provide the best heat conduction path, and rotor yoke tail part sets up the impeller structure of axial air -blowing and strengthens the sector hole of airflow circulation, provides high -speed airflow, improves the air -cooling heat dissipation effect.
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