Motor Substrate Layout for Compact Low-Noise Housing
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Solution Overview
Problem
Direct current motors with AC-DC converters face challenges in weight reduction and size minimization while maintaining performance and reducing noise.
Innovation Solution
The motor design incorporates a rotor, stator, first substrate, second substrate, and electronic components, with the stator featuring a stator core, insulator, and coil. The insulator includes coupling parts for external device connection, allowing for reduced housing size and weight through strategic substrate spacing and material selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the motor uses a conventional integrated housing structure, then the structural strength and stability are maintained, but the weight and size increase
Solution Approach 1:
The housing is divided into multiple separate components (first housing component, second housing component, third housing component) instead of using a single integrated structure. These segmented components are assembled together to form the complete housing, allowing for weight reduction while maintaining structural integrity through proper connection design.
2Volume of moving object
If the substrates are positioned closer together, then the motor size is reduced, but the noise and vibration increase
Solution Approach 1:
A vibration-absorbing member is introduced as an intermediary element between the first substrate and the second substrate. This mediator component reduces noise and vibration while allowing the substrates to be positioned at an optimized distance, thus controlling motor volume without compromising acoustic performance.
Solution Approach 2:
The distance between the first substrate and second substrate is optimized as a key parameter. By adjusting this spacing parameter and using resilient materials, the design achieves a balance between minimizing motor volume and reducing noise/vibration generation.
3Stability of the object's composition
If more structural elements are added to the housing, then the structural stability is improved, but the weight increases
Solution Approach 1:
The housing structure is segmented into multiple components that are assembled together. This segmentation allows for strategic placement of structural reinforcement only where needed, rather than adding material throughout the entire housing, thus maintaining stability while minimizing weight.
Solution Approach 2:
The housing components may utilize composite material constructions that provide high strength-to-weight ratios, allowing structural stability to be achieved with minimal material usage and reduced overall weight.
Data Source
AI summary
A motor includes a rotor, a stator, a first substrate, a second substrate, and an electronic component arranged at the second substrate. The stator includes a stator core, an insulator, and a coil wound around the stator core via the insulator. The insulator includes a coupling part connected to an external device. The first substrate is fixed to the insulator. The second substrate is fixed to the first substrate. The first substrate and the second substrate are spaced apart in a rotation axis direction of the rotor.