Electromagnetic Robot Hand for Compact Adjustable Gripping
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Solution Overview
Problem
Conventional robots with motor-driven gripping mechanisms are complex and difficult to miniaturize, making them unsuitable for compact configurations.
Innovation Solution
A robot hand design featuring a plurality of fingers with a first and second electromagnet, and a movable part made of magnetic material, allowing the fingers to close and open through magnetic attraction, enabling adjustable gripping force without the need for complex motor systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a motor-driven gripping mechanism is used, then the gripping force can be adjusted, but the device complexity increases and the size cannot be reduced
Solution Approach 1:
The patent replaces the motor-driven mechanical gripping mechanism with an electromagnetic system. Electromagnets are used to attract or repel the movable part, which in turn controls the rotation of fingers through magnetic coupling, eliminating the need for complex motor assemblies while maintaining gripping force adjustability through electrical control
Solution Approach 2:
The patent extracts the core functional elements (electromagnets and movable part) from the complex motor system, removing unnecessary mechanical components while retaining the essential gripping function. This extraction simplifies the overall structure and reduces device size
2Device complexity
If a motor-driven gripping mechanism is used, then the gripping force can be adjusted, but the device size cannot be reduced
Solution Approach 1:
The patent replaces bulky motor assemblies with compact electromagnets that generate magnetic fields for actuation. This substitution dramatically reduces the volume required for the gripping mechanism while maintaining the ability to control gripping force through electrical signals
Solution Approach 2:
The patent employs a nested structure where the movable part containing rotating parts is positioned within the palm, and fingers are arranged around it. This compact nesting allows multiple components to occupy minimal space while maintaining full functionality
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves a simple and compact robot hand configuration with adjustable gripping force, allowing for precise control of the gripping mechanism, reducing the device's size and weight while maintaining effective object handling.
Implementation Method 1
movement of the movable part toward the first electromagnet with magnetic attraction of the first electromagnet
Implementation Method 2
movement of the movable part toward the second electromagnet with magnetic attraction of the second electromagnet
Data Source
AI summary
A robot hand includes a plurality of fingers, a first electromagnet, a second electromagnet, and a movable part configured to be movable between the first electromagnet and the second electromagnet. Each of the plurality of fingers includes a gripping part configured to grip an object, a cam follower configured to rotate around a rotating shaft in accordance with movement of the movable part.