Tendon transmission assembly of joint and robot

By designing a rotatable positioning part and bearing structure on the winch, the problems of radial tension and lateral bending moment generated by the winch on the drive shaft in the tendon transmission assembly are solved, thereby improving the reliability of the assembly.

CN223466305UActive Publication Date: 2025-10-24NEUROCEAN TECH INC
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Patent Information

Application Number
CN202422788098.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-14
Publication Date
2025-10-24
Estimated Expiration
2034-11-14

AI Technical Summary

Technical Problem

In existing tendon drive systems, the transmission tendon generates radial tension and lateral bending moment on the drive shaft during winch pulling, affecting the reliability of the tendon drive components of the joint.

Method used

A tendon drive assembly for a joint is designed, wherein a winch is rotatably mounted on a positioning assembly via a positioning part. Combined with bearing and clearance design, the winch is prevented from being directly fixed to the drive shaft, thereby reducing the transmission of lateral bending moment.

Benefits of technology

Effectively unloading the lateral bending moment on the winch improves the reliability of the drive assembly and prevents the winch from transmitting the lateral bending moment to the drive shaft.

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Abstract

The utility model provides a tendon transmission assembly of a joint. The tendon transmission assembly comprises a winch and a positioning assembly. The winch is configured to be driven by an actuating device to rotate, and the winch comprises a containing part and at least one positioning part; the accommodating part is configured to be used for winding or unfolding the transmission tendon; and the winch is rotatably mounted on the positioning assembly through the positioning part. When the tendon transmission assembly works, the lateral bending moment generated by the transmission tendon to the winch can be unloaded through the positioning assembly, and the situation that the winch transmits the lateral bending moment to the transmission shaft is avoided. The utility model further provides a robot comprising the tendon transmission assembly.
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