Robotic Arm Joint Structure for Higher Payload and Internal Wiring

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing robotic arms have a heavy tail end, limiting payload capacity and are cluttered with external wiring, affecting their functionality and aesthetics.

Innovation Solution

A robotic arm design featuring multiple joint mechanisms with integrated motors and bearings, allowing for multi-degree of freedom movement and internal wiring, connected to a gripper structure for enhanced payload and aesthetic appeal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If external wirings are adopted for robotic arms, then electrical connections are achieved, but the overall appearance becomes cluttered and aesthetic appeal is reduced

Engineering Contradiction:

Improveelectrical connectionVSAvoidappearance

Core Design Contradiction:

Ease of manufactureVSShape

Solution Approach 1:

The patent integrates motors and wirings inside the robotic arm structure itself, nesting the electrical components within the arm's body rather than having them external. This nesting approach achieves electrical connectivity while maintaining a clean, clutter-free appearance, directly resolving the contradiction between ease of manufacturing electrical connections and aesthetic appearance.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Stability of the object's composition

If the tail end of robotic arm is made heavy, then structural stability is improved, but payload capacity at the tail end is reduced

Engineering Contradiction:

Improvestructural stabilityVSAvoidpayload capacity

Core Design Contradiction:

Stability of the object's compositionVSWeight of moving object

Solution Approach 1:

The patent segments the robotic arm into multiple modular sections with joints at each segment. By distributing motors and components across different segments rather than concentrating weight at the tail end, the design achieves structural stability through modular construction while preserving payload capacity at the end effector.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs counterbalancing mechanisms through the strategic placement of motors and structural elements along the arm's length. This distribution of mass creates counterbalancing effects that maintain structural stability without requiring excessive weight at the tail end, thereby preserving payload capacity.

Inventive Principle:

Principle #8Anti-weight (Counterweight)

Data Source

PatentUS20260109057A1Robotic arm for robot

Publication Date: 2026.04.23 SUZHOU XINGHAITU DYNAMICS TECHNOLOGY CO LTD

AI summary

A robotic arm for the robot includes a robotic arm base, a robotic arm control board, a first joint mechanism, a second joint mechanism, a robotic upper arm structure, a third joint mechanism, a fourth joint mechanism, a robotic forearm structure, a fifth joint mechanism, and a sixth joint mechanism. The robotic arm control board is disposed within the robotic arm base, the robotic upper arm structure is connected to the robotic arm base through the second joint mechanism and the first joint mechanism, the robotic forearm structure is connected to the robotic upper arm structure through the fourth joint mechanism and the third joint mechanism, the fifth joint mechanism and the sixth joint mechanism are disposed at a tail end of the robotic forearm structure, and the robotic forearm structure is connected to a gripper structure of the robot through the fifth joint mechanism and the sixth joint mechanism.