一种耦合式四关节三自由度仿生腿

By using a coupled four-joint three-degree-of-freedom design and utilizing telescopic joint motors to drive the synchronous movement of the thigh assembly, lower leg assembly, and metacarpals, the problem of easy collisions with obstacles in the legs of quadrupedal bionic robots is solved, achieving high mobility and reliability in complex environments.

CN120886942BActive Publication Date: 2026-07-17ZHONGBING INTELLIGENT INNOVATION RES INST CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHONGBING INTELLIGENT INNOVATION RES INST CO LTD
Filing Date
2025-09-19
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The legs of existing quadrupedal bionic robots are prone to collisions when encountering obstacles. Increasing the number of joints will increase complexity and weight. Furthermore, the knee and ankle joints of existing three-joint, four-degree-of-freedom legs are not aligned, making them prone to collisions with obstacles.

Method used

It adopts a coupled four-joint three-degree-of-freedom design, using telescopic joint motors to drive the thigh component, lower leg component and metacarpals to move simultaneously. The three-bar structure design reduces the space occupied by the knee and ankle joints, and the coupling drive method reduces the number of motors, thus achieving synchronous movement of the knee and ankle joints.

Benefits of technology

Without increasing the complexity and weight of the legs, the probability of collisions with obstacles is reduced, and the robot's mobility and reliability are improved by simplifying foot trajectory calculations.

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Abstract

本发明涉及一种耦合式四关节三自由度仿生腿,属于仿生机器人技术领域,解决了现有技术中腿部易与障碍物碰撞的问题。本发明包括伸缩关节电机(10)、大腿组件(20)、小腿组件(30)和掌骨(40);伸缩关节电机(10)能够驱动大腿组件(20)、小腿组件(30)和掌骨(40)同时运动以使掌骨(40)的第二端上下运动,并且小腿组件(30)相对于大腿组件(20)的转动方向与掌骨(40)相对于小腿组件(30)的转动方向始终相同。本发明将腿部两杆结构改为三杆结构并向一个方向弯折,缩短了每根杆的长度,减小了腿部膝关节和踝关节方向所占的空间,减小了与障碍物碰撞的概率。
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