Circuit-Integrated Motor Cover Structure for Screwless PCB Fixing
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Solution Overview
Problem
Conventional circuit-integrated motors require multiple parts and significant assembly man-hours due to the use of screws to fix the control board to the partition part.
Innovation Solution
A circuit-integrated motor design where the control board is held and fixed by a protrusion of a cover within the board chamber, reducing the need for screws and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control board is fixed to the partition part with screws, then the control board is securely fixed, but the number of parts increases and assembly man-hours increase
Solution Approach 1:
The invention merges the cover and the fastening function into a single integrated component. The cover includes integrated protrusions that directly engage with recesses in the control board, eliminating the need for separate screws and fastening parts. This combining of the cover structure with the fastening mechanism reduces the total number of parts while maintaining secure fixation.
Solution Approach 2:
The cover structure provides self-service fastening through its integrated protrusions that automatically engage with the control board when the cover is installed. The design eliminates the need for separate fastening operations, as the cover itself performs the fastening function through its geometric features, reducing assembly complexity and part count.
2Reliability
If the control board is fixed to the partition part with screws, then the control board is securely fixed, but the assembly time increases
Solution Approach 1:
The invention merges the cover and the fastening function into a single integrated component. The cover includes integrated protrusions that directly engage with recesses in the control board, eliminating the need for separate screws and fastening parts. This combining of the cover structure with the fastening mechanism reduces the total number of parts while maintaining secure fixation.
Solution Approach 2:
The fastening protrusions are pre-integrated into the cover structure during manufacturing, eliminating the need for separate fastening operations during assembly. The geometric features are prepared in advance as part of the cover design, allowing for quick and simple installation without requiring separate fastening steps.
3Reliability
If the control board is fixed to the partition part with screws, then the control board is securely fixed, but the number of fastening parts increases
Solution Approach 1:
The invention merges the cover and the fastening function into a single integrated component. The cover includes integrated protrusions that directly engage with recesses in the control board, eliminating the need for separate screws and fastening parts. This combining of the cover structure with the fastening mechanism reduces the total number of parts while maintaining secure fixation.
Data Source
AI summary
A circuit-integrated motor includes: a motor; a control board for controlling the motor; and a casing including a partition part dividing a board chamber for housing the control board from a placement space for the motor, and a cover disposed on the opposite side of the control board from the partition part. An opposing surface of the partition part to the control board includes: a non-contact region not in contact with the control board; and a contact region rising from the non-contact region and in contact with the control board. The cover has a protrusion which protrudes toward the board chamber at a position overlapping with the contact region of the opposing surface when viewed from the normal direction of the control board. The control board is held between the protrusion and the contact region of the opposing surface.