Offset Planetary Torque Multiplier for Confined Assembly Spaces
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Solution Overview
Problem
Existing torque multipliers face challenges in applying a predetermined amount of output torque in confined spaces while minimizing size and weight, and maximizing efficiency.
Innovation Solution
The offset torque multiplier employs offset planetary gearsets, including an input planetary gearset, an intermediate helical gear, and an output planetary gearset, with the output torque being greater than the input torque, and the gearsets are housed to minimize size and weight, allowing for efficient torque application in compact spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional torque multipliers are used, then sufficient output torque can be achieved, but the device size and weight increase, making it unsuitable for confined spaces
Solution Approach 1:
The patent applies offset planetary gearsets where the input and output axes are positioned at different locations rather than being coaxial. This spatial reconfiguration allows the torque multiplier to deliver high output torque while reducing the overall device footprint and weight, making it suitable for confined spaces where conventional torque multipliers would be too bulky
2Force
If conventional torque multipliers are used, then sufficient output torque can be achieved, but the device complexity increases
Solution Approach 1:
The torque multiplier is divided into distinct functional modules: an input planetary gearset, an output planetary gearset, and connecting gear elements. This segmentation allows each module to be optimized independently while maintaining overall simplicity, achieving high torque multiplication without excessive complexity
3Volume of moving object
If the torque multiplier size is minimized for confined spaces, then space efficiency improves, but efficiency may be compromised
Solution Approach 1:
The patent optimizes the gear ratios and offset distances of the planetary gearsets to achieve the desired torque multiplication factor while maintaining efficient power transmission. By carefully selecting gear tooth counts and pitch circle diameters, the design achieves both compact size and high efficiency, minimizing energy losses
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 offset torque multiplier effectively applies a higher output torque than input torque in a compact form, enhancing efficiency and reducing weight, suitable for applications in confined mechanical assembly spaces.
Implementation Method 1
The offset torque multiplier includes an input planetary gearset configured to receive an input torque and an output planetary gearset configured to provide an output torque that is greater than the input torque
Data Source
AI summary
An offset torque multiplier includes an input planetary gearset configured to receive an input torque. The input planetary gearset includes an input sun gear. The input sun gear is rotatable about a first axis of rotation. The offset torque multiplier includes an output planetary gearset configured to provide an output torque. The output planetary gearset includes an output sun gear. The output sun gear is rotatable about a second axis of rotation. The second axis of rotation is offset from the first axis of rotation. The offset torque multiplier includes at least one intermediate planetary gearset coupled between the input planetary gearset and the output planetary gearset. The output torque is greater than the input torque.