Elastic cycloid speed reducer

By designing an elastic cycloidal pinwheel reducer, combining a drive and elastic buffer components, the problems of large size and weak impact resistance of traditional cycloidal pinwheel reducers are solved, achieving a smaller size and more efficient transmission performance, suitable for industrial robot joints and other scenarios.

CN224397034UActive Publication Date: 2026-06-23BAOJI UNIV OF ARTS & SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BAOJI UNIV OF ARTS & SCI
Filing Date
2025-09-12
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Traditional cycloidal pinwheel reducers are bulky, have weak impact resistance, and lack adaptability, making it difficult to meet the lightweight and high-performance requirements of the robotics field.

Method used

An elastic cycloidal pinwheel reducer was designed, comprising a drive section, a cycloidal transmission section, and an elastic buffer section. It adopts a combination of a motor top shell, a conveying sleeve, a motor housing, a motor stator, and a motor bottom shell, combined with a torsion spring for buffering, which increases elasticity and reduces rigid impact. It is used in conjunction with dual encoders to achieve closed-loop control.

Benefits of technology

This technology has resulted in a smaller and lighter reducer with improved dynamic performance, high transmission efficiency, reduced noise, and extended service life, making it suitable for compact spaces such as industrial robot joints.

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Abstract

The utility model provides a kind of elastic cycloidal pin gear reducer, comprising: driving part, cycloidal transmission part and elastic buffer part;The driving part includes motor top shell, conveying sleeve, motor shell, motor stator and motor bottom shell, the conveying sleeve is installed in the top of the inner wall of motor shell, the motor stator is installed in the inside of motor shell, the motor bottom shell is installed in the bottom of motor shell.The utility model provides a kind of elastic cycloidal pin gear reducer, compared with traditional inner rotor motor axial dimension shorter by the use of motor top shell, conveying sleeve, motor shell, motor stator and motor bottom shell, the double closed-loop feedback of cooperation motor encoder and output encoder, power response speed is accelerated, adapts to the scene of high dynamic performance requirement such as industrial robot joint.
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