Transfer Robot Arm Downsizing via Concentric Motor Arrangement
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Solution Overview
Problem
Existing transfer robots face challenges in downsizing their arms due to the incorporation of built-in motors and belts for driving the hands.
Innovation Solution
The transfer robot incorporates a design where multiple hand drive motors are arranged along the pivoting axis of the hands, allowing them to be directly connected and concentric with the motor axis, eliminating the need for a belt mechanism and reducing the arm's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If built-in motors and belts are incorporated in the arm to drive the hands, then the hands can be driven effectively, but the arm size increases
Solution Approach 1:
The patent repositions the motors from being embedded within the arm structure to being arranged along the pivoting axis at the hand level. This spatial reconfiguration eliminates the need for power transmission belts through the arm, thereby reducing arm volume while maintaining hand driving capability.
Solution Approach 2:
The patent extracts the motors from the arm structure and relocates them to positions where they can directly drive the hands without requiring belt mechanisms. This extraction eliminates the space-consuming belts and intermediate transmission components from the arm, achieving downsizing.
2Extent of automation
If built-in motors are placed in the arm, then direct drive is achieved, but the arm structure becomes more complex
Solution Approach 1:
By extracting the motors from the arm and positioning them where they can directly connect to the hands, the patent eliminates intermediate transmission mechanisms like belts. This reduces structural complexity while preserving direct drive functionality.
Solution Approach 2:
The motors are arranged along the pivoting axis in a configuration that simplifies the overall structure by eliminating the need for complex belt routing and transmission paths through the arm.
Data Source
AI summary
A transfer robot includes a plurality of hands, a plurality of hand drive motors, and an arm. The plurality of hands are capable of holding a transfer target object, and pivot individually around a pivoting axis. The plurality of hand drive motors are arranged in a direction following the pivoting axis, such that a motor axis to which the plurality of hands are each connected becomes concentric with the pivoting axis, and directly drive the plurality of hands, respectively. The arm includes therein the plurality of hand drive motors.