Movable Gear Support for Compact Power Transmission Meshing
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Solution Overview
Problem
Existing power transmission devices using meshing gears face issues with interaxial distance, leading to gear damage, increased drive load, or insufficient power transmission due to inappropriate meshing ratios, and require a large installation space.
Innovation Solution
A power transmission device with a first and second gear configuration, where the second gear is supported by a second support section allowing movement in an advance and retract direction, and a force acts towards the first gear, enabling space-saving meshing and appropriate power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a planetary gear mechanism is used to maintain appropriate interaxial distance, then gear damage and drive load are suppressed, but the device size increases due to large installation space required
Solution Approach 1:
The second rotation shaft is made movable in the advance and retract direction, allowing the second gear to dynamically adjust its position relative to the first gear. This dynamic configuration enables the gear to maintain optimal meshing contact while accommodating variations in interaxial distance, thereby ensuring reliable power transmission without requiring the bulky fixed structure of a planetary gear mechanism
Solution Approach 2:
The invention changes the interaxial distance parameter by allowing the second rotation shaft to move between a first position (when the medium is fed) and a second position (when the medium is not fed). This parameter adjustment optimizes power transmission efficiency at different operational states while maintaining compact device dimensions
2Volume of moving object
If the interaxial distance between meshing gears is shorter than appropriate, then device size is reduced, but gear damage and increased drive load occur
Solution Approach 1:
The second rotation shaft is configured to move in the advance and retract direction, enabling the second gear to dynamically adjust its position. When the medium is being fed, the shaft moves to the first position ensuring appropriate meshing contact and preventing gear damage. When the medium is not being fed, it moves to the second position reducing the interaxial distance and minimizing device size
Solution Approach 2:
The movable second rotation shaft automatically adjusts the gear position based on operational conditions (presence or absence of medium feeding), eliminating the need for external control mechanisms or additional components to maintain optimal gear spacing
Data Source
AI summary
A power transmission device includes a first gear provided on a first rotation shaft, a second gear that is provided on a second rotation shaft and that meshes with the first gear, a first support section that supports the first rotation shaft, and a second support section that supports the second rotation shaft, wherein the second support section allows movement of the second rotation shaft in an advance and retract direction in which the second gear advances and retracts with respect to the first gear and a force in a direction toward the first gear acts on the second gear.