Partial-Tooth Gear Structure for Simple Phase Matching
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Solution Overview
Problem
Existing gear structures that transmit power via multiple gears face complexity in phase matching due to the need for additional mechanisms like pins and holes, complicating the assembly process.
Innovation Solution
A gear structure where one gear has partially missing teeth, and the other gear has engaging portions that align with these missing tooth portions, allowing for simple phase matching without additional phase matching means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pins and holes are used to match phases of multiple gears, then phase matching reliability is improved, but device complexity increases
Solution Approach 1:
The invention extracts the phase matching function from separate pins and holes and integrates it directly into the gear teeth structure. By making some teeth partially missing and providing corresponding engaging portions on the other gear, the phase matching capability is built into the gears themselves, eliminating the need for additional phase matching components and simplifying the overall assembly.
Solution Approach 2:
The invention merges the power transmission function and phase matching function into a single integrated gear structure. The teeth that transmit power also serve as the phase matching features through their partial missing configuration and corresponding engaging portions, combining multiple functions into one unified structure rather than using separate components.
2Manufacturing precision
If additional phase matching mechanisms are added, then phase matching accuracy is improved, but the overall size of the gear structure increases
Solution Approach 1:
The invention removes the need for separate phase matching components that would increase the overall size. By extracting the phase matching function and embedding it within the existing gear tooth geometry through partial missing teeth and engaging portions, the solution achieves accurate phase matching without adding external mechanisms that would increase the gear structure volume.
Solution Approach 2:
The gear teeth are designed to serve multiple functions simultaneously: power transmission and phase matching. The same tooth structure that transmits mechanical power also provides the phase matching capability through its partial missing configuration, eliminating the need for dedicated phase matching components and maintaining a compact overall size.
Data Source
AI summary
A gear structure includes two gears meshing with each other to transmit power. In one of the two gears, some of a plurality of teeth are partially missing in a tooth width direction. The other of the two gears has engaging portions that engage with the missing tooth portions at inter-teeth portions corresponding to the partially missing teeth among a plurality of inter-teeth portions.