Linear Motor Coil Bowing for Stable Heat Dissipation
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Solution Overview
Problem
Conventional linear motor heat dissipation structures experience unstable and variable heat dissipation due to component and assembly tolerances affecting the contact state between the coil and heat dissipation members.
Innovation Solution
A linear motor heat dissipation structure featuring coils wound around a rectangular tube-shaped bobbin with a heat dissipation member sandwiched between adjacent coils, utilizing elastic deformation to absorb tolerances and enhance contact stability, with adjustable bow amounts and recessed sections to optimize heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a flat side surface of the coil contacts the heat dissipation member directly, then heat dissipation occurs, but large variance arises in the contacting state due to component tolerances and assembly tolerances
Solution Approach 1:
The invention changes the geometric parameters of the coil by forming bowed sections with specific radius of curvature at both ends of the coil. This curvature allows the coil to elastically deform and maintain stable contact with the heat dissipation member, absorbing component and assembly tolerances while ensuring consistent heat dissipation performance.
Solution Approach 2:
The invention introduces dynamic elasticity to the coil structure through the bowed sections. The elastic force generated by the curved portions allows the coil to adaptively adjust its contact state with the heat dissipation member, transforming from a rigid flat contact to a flexible elastic contact that maintains stability despite tolerances.
2Reliability
If the radius of curvature of the rounded edge section is made smaller, then the bow amount increases and tolerance absorption improves, but the pushing force to the heat dissipation member increases which may cause other issues
Solution Approach 1:
The invention optimizes the radius of curvature parameter of the rounded edge sections to achieve a balanced state. By carefully selecting this geometric parameter, the coil generates sufficient elastic force to absorb tolerances and maintain contact stability, while the pushing force remains within acceptable limits to avoid damaging the heat dissipation member or causing other adverse effects.
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 stabilizes and improves heat dissipation performance by minimizing variance in contact resistance and increasing the elastic deformation of coils, leading to enhanced heat transfer efficiency and reduced coil interval.
Implementation Method 1
bowed sections of the coils that are curved outwards within edges of the rectangular tube-shaped bobbin due to elastic force of the coils
Implementation Method 2
a heat dissipation member provided between adjacent coils that dissipates heat generated in the coils by transmitting the heat to an external section
Data Source
AI summary
A linear motor heat dissipation structure including multiple teeth arranged linearly at predetermined intervals each with coil wound around rectangular tube-shaped bobbin, and heat dissipation member provided between adjacent coils that dissipates heat generated coils by transmitting the heat to an external section. Heat dissipation member is sandwiched by bowed sections of coils that are curved outwards within edges of rectangular tube-shaped bobbin due to elastic force of coils. Accordingly, even when there are component tolerances and assembly tolerances, those tolerances are absorbed by the elastic deformation of the bowed section of coils such that the variance in the contact state between coil and heat dissipation member is made smaller so that stable and high heat dissipation performance is achieved.