A scalable four-degree-of-freedom robotic neck structure

By designing a single-degree-of-freedom telescopic structure and a three-degree-of-freedom gimbal neck structure, the transmission chain is simplified, the accumulated error of the gap is eliminated, and the motion accuracy and dynamic response are improved. This solves the problems of complex structure, insufficient motion accuracy and high maintenance cost of traditional robot head motion mechanisms, and realizes efficient and stable robot head motion.

CN224374137UActive Publication Date: 2026-06-19SHENZHEN FLINT ROBOT TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN FLINT ROBOT TECHNOLOGY CO LTD
Filing Date
2025-07-01
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

Traditional robot head motion mechanisms are complex in structure, lack motion accuracy and stability, have high maintenance costs, limited flexibility and response speed, and have an unsatisfactory load-bearing capacity to weight ratio.

⚗Method used

It adopts a single-degree-of-freedom telescopic structure and a three-degree-of-freedom gimbal neck structure. It uses a motor to drive the lead screw movement, combined with a specific trajectory guide rail and a three-pulley constraint mechanism to simplify the transmission chain, eliminate backlash accumulation error, and directly drive the rotational degree of freedom through three motors. Combined with the center of gravity axis intersection design, it improves dynamic response and anti-disturbance capability.

🎯Benefits of technology

It significantly simplifies the transmission chain, improves motion accuracy and dynamic response, expands the operating field of view, reduces maintenance costs, and enhances the flexibility and stability of robot head movement.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to robot technical field, concretely relates to a telescopic four degree of freedom robot neck structure, including single degree of freedom telescopic structure and three degrees of freedom holder neck structure, single degree of freedom telescopic structure includes first support and second support, top connection three degrees of freedom holder neck structure, motor and screw rod set in first support and second support below, and motor can directly drive screw rod movement, the both ends of connecting rod are all rotary pair, one end connects pin shaft, and the other end connects screw rod, two sliding blocks and guide rails, and the sliding block is arranged respectively in the outside of first support and second support, is equipped with three pulleys with guide rail cooperation on every sliding block, respectively with the inside track and the outside track of guide rail and roll friction contact, and guide rail includes straight line section guide rail and arc line section guide rail. The utility model has the advantages of: the transmission chain is simplified significantly, eliminates clearance cumulative error, and the motion accuracy is improved, the robot operation field of vision is increased, and dynamic response and anti disturbance ability are effectively improved.
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