Concentric Gear With Revolving Transmitter for High Torque Conversion
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Solution Overview
Problem
Existing gear systems face challenges in achieving high gear ratios and efficient torque conversion, particularly in converting slow power sources into high rotational frequencies, while avoiding self-locking issues and maintaining reliability.
Innovation Solution
A gear design featuring concentric outer and inner wheels with a ring-shaped traction mechanism, where the input shaft is connected to the transmitter and the output shaft to either the inner or outer wheel, ensuring stability and using a flexible spline element with protruding pins for high gear ratios, and optionally employing a double or triple chain configuration for increased axial plane flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional gear systems are used to achieve high gear ratios, then torque conversion capability is limited, but device complexity and self-locking risks increase
Solution Approach 1:
The gear system is segmented into an outer wheel and an inner wheel that rotate in opposite directions, with the traction means engaging both wheels. This segmentation allows independent rotation of each wheel, enabling high gear ratios without complex multi-stage gearing, thus resolving the contradiction between torque conversion capability and device complexity.
Solution Approach 2:
The inner wheel is positioned concentrically inside the outer wheel, creating a nested configuration where the traction means passes through the center region. This nesting allows both wheels to share the same space efficiently, achieving high gear ratios in a compact design without increasing overall device complexity.
2Reliability
If conventional gear systems are used for torque conversion, then reliability is compromised due to self-locking issues, but manufacturing precision requirements increase
Solution Approach 1:
Instead of using traditional gear teeth that engage at the periphery, the traction means engages the inner wheel at its inner periphery and the outer wheel at its outer periphery. The transmitter lifts the traction means away from the inner wheel and pushes it onto the outer wheel, inverting the conventional engagement pattern. This inversion eliminates self-locking issues while maintaining reasonable manufacturing precision requirements.
3Speed
If single chain configuration is used, then gear ratio is limited, but axial plane flexibility is reduced
Solution Approach 1:
The invention transitions from a single-chain configuration to multi-chain configurations (double chain, triple chain) arranged in different axial planes. Each chain operates in its own axial plane, allowing the transmitter to lift and push the traction means across multiple dimensional layers. This dimensional expansion enables higher gear ratios and greater rotational frequency conversion while maintaining axial plane flexibility.
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 high gear ratios and efficient torque conversion, effectively converting slow power sources into high rotational frequencies, while minimizing self-locking risks and enhancing manufacturing simplicity.
Implementation Method 1
A revolving transmitter lifts or drags the traction means away from the outer periphery of the inner wheel and pushes it onto the inner periphery of the outer wheel
Data Source
AI summary
Disclosed is a gear including an input shaft; an output shaft an outer wheel; an inner wheel positioned concentrically in relation to the outer wheel; a pressure means extending between the outer wheel and the inner wheel; and at least one revolving transmitter configured to push the pressure means away from the inner periphery of the outer wheel and push the pressure means onto the outer periphery the inner wheel.