Resin Gear Heat-Conduction Layout for Thermal Deformation Control
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Solution Overview
Problem
Resin-based gear devices face challenges with thermal degradation and heat dissipation due to heat generation at meshing locations, necessitating improved heat management solutions.
Innovation Solution
Incorporating a resin gear device design where the first gear and connection/path members made of resin with higher thermal conductivity than other resin members, facilitating efficient heat dissipation through metal components and resin-based heat transfer paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If resin is used for the gear to achieve weight reduction, then the weight of the gear device is reduced, but thermal degradation and thermal deformation occur due to heat generation at the meshing location
Solution Approach 1:
The patent applies local quality by using resin material only for non-critical components (covers, casings) while using metal material for critical components (gears, connection members) that require both weight reduction and thermal resistance. This selective material assignment resolves the contradiction by maintaining reliability in heat-prone areas while achieving overall weight reduction.
2Weight of moving object
If resin is used for the gear to achieve weight reduction, then the weight of the gear device is reduced, but thermal deformation occurs due to heat generation at the meshing location
Solution Approach 1:
The patent implements local quality by assigning metal material to gears and connection members that experience thermal loading, while using resin for structural covers and casings. This ensures dimensional stability is maintained in thermally critical components while achieving weight reduction in non-critical components.
3Temperature
If one gear is made of resin and the other gear is made of material with higher thermal conductivity to diffuse heat, then heat dissipation is improved, but the complexity of the gear device increases due to mixed materials
Solution Approach 1:
The patent applies local quality by using metal material specifically for gears and connection members that require heat dissipation, while using resin for covers and casings. This targeted material assignment improves heat dissipation in critical areas while maintaining overall device simplicity through clear functional segmentation.
4Temperature
If high thermal conductivity resin is used for the first gear and connection/path members to facilitate heat dissipation, then temperature rise is suppressed, but production cost increases due to specialized material requirements
Solution Approach 1:
The patent implements local quality by using high thermal conductivity resin only for the first gear and connection/path members that require heat dissipation, while using standard resin for other components like covers and casings. This selective material application suppresses temperature rise in critical areas while controlling production costs through differentiated material specification.
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
This configuration effectively suppresses temperature rise, achieves weight reduction, and maintains operational accuracy by utilizing high thermal conductivity resins only where necessary for heat transfer, reducing production costs and preventing degradation/deformation.
Implementation Method 1
the first gear, the connection member, and the path member are made of a resin having a higher thermal conductivity than a thermal conductivity of the other members
Data Source
AI summary
A gear device includes a first gear, and a second gear meshing with the first gear. At least the first gear is made of a resin. The gear device further includes a connection member connected to an external member, a path member disposed in a path leading to the first gear and the connection member, and other members that are members other than the first gear, the second gear, the connection member, and the path member, and are made of a resin. The first gear, the connection member, and the path member are made of a resin having a higher thermal conductivity than a thermal conductivity of the other members.