Disk Rotating Motor Bracket With Folded Portion
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Solution Overview
Problem
Existing disk rotating motors require complex and costly fabrication methods, with a need for simplified manufacturing processes to reduce component parts and assembly complexity while maintaining high precision.
Innovation Solution
A disk rotating motor design featuring a stator with a bracket that includes a cylindrical portion and a folded portion, supported by a bearing, allowing for press-fitting assembly and reduced component count, enabling cost-effective fabrication through simplified methods like pressing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional fabrication methods are used for disk rotating motors, then manufacturing precision and reliability are maintained, but device complexity and manufacturing cost increase
Solution Approach 1:
The bracket is designed as an integrated component that combines multiple functions: it supports the stator core, provides bearing mounting positions, and includes the cylindrical portion with folded portion structure. This merging of multiple components into a single bracket reduces the total number of parts and simplifies the fabrication process while maintaining structural integrity and precision
2Productivity
If traditional fabrication methods are used for disk rotating motors, then assembly precision is maintained, but manufacturing cost and time increase
Solution Approach 1:
The bracket is pre-formed with the cylindrical portion and folded portion structure integrated into a single piece. The bearing is pre-positioned within the cylindrical portion, and the stator core is pre-attached to the folded portion. This preliminary preparation of components with built-in positioning features ensures high assembly precision while reducing on-site assembly complexity and time
3Device complexity
If integrated bracket design is used, then component count is reduced and cost decreases, but structural complexity increases
Solution Approach 1:
The bracket is designed with distinct functional segments: the cylindrical portion for bearing support and the folded portion for stator core attachment. This segmentation allows each part to be optimized for its specific function while remaining part of an integrated structure, making the fabrication process more manageable and the structure easier to manufacture despite the reduced component count
Data Source
AI summary
A disk rotating motor is provided with: a stator including a stator core and a bracket for fixing the stator core; a rotor that can be rotated with respect to the stator and includes a rotary shaft; and a bearing that rotatably supports the rotary shaft on the outer diameter side of the rotary shaft, the bearing being supported by the bracket. The bracket includes a cylindrical portion extending along the rotary shaft, and a folded portion formed by folding the upper end of the cylindrical portion onto the outer diameter side such that at least a coaxial part of the folded portion extends coaxially along an outer surface of the cylindrical portion. The cylindrical portion and the folded portion are sandwiched by the stator core and the bearing in a radial direction.