Motor Housing Layout for Compact Electronics Integration
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Solution Overview
Problem
Conventional motor assemblies with large-sized electronic components become bulky, leading to increased size and weight, which complicates integration and efficiency.
Innovation Solution
A motor assembly design featuring a housing with a tubular portion and side wall portions that accommodate electronic components, allowing for efficient placement and reducing the overall size by creating an accommodation space between the tubular and side wall portions, thereby minimizing the radial and axial dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large-sized electronic components are mounted on a substrate for controlling the motor, then the motor assembly can function with necessary electronic components, but the electronic component becomes bulky and the size of the outer shape of the motor assembly increases
Solution Approach 1:
The electronic component is nested within the hollow interior of the tubular portion of the housing. The substrate is mounted on the inner circumferential surface of the tubular portion, and the electronic component is positioned inside the tubular portion, effectively utilizing the hollow space for component placement and reducing the overall motor assembly size.
Solution Approach 2:
The design transitions from mounting electronic components on the external surface to utilizing the internal three-dimensional space of the tubular portion. By arranging the substrate on the inner circumferential surface and positioning the electronic component within the hollow interior, the solution exploits the internal volume rather than increasing external dimensions.
2Ease of manufacture
If electronic components are mounted on the outer surface of the housing, then assembly is simple, but the radial outer dimension increases and integration becomes complicated
Solution Approach 1:
The electronic component is placed inside the tubular portion rather than on the outer surface. The substrate is mounted on the inner circumferential surface of the tubular portion, utilizing the hollow space for component placement and reducing the overall motor assembly size.
Solution Approach 2:
The design transitions from two-dimensional external mounting to three-dimensional internal placement. By arranging the substrate on the inner circumferential surface and positioning the electronic component within the hollow interior, the solution exploits the internal volume rather than increasing external dimensions.
Data Source
AI summary
A motor assembly includes a housing and a plate-shaped first substrate. The housing houses a motor whose axis of rotation extends in the axial direction. Electronic components are mounted on the first substrate. The housing includes a tubular portion and a side wall portion. The tubular portion extends in the axial direction and accommodates the motor. The side wall portion protrudes from a radial outer surface of the tubular portion in a direction including at least the radially outward direction and the circumferential direction, and extends in the axial direction. An accommodation space to accommodate the electronic components is provided between the tubular portion and the side wall portion as viewed from the axial direction.