Motor Rotor Positioning Ring with Flexible Ribs
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Solution Overview
Problem
The assembly of large-sized fan motor rotors is labor-intensive and lacks precision due to manual alignment and adhesion of permanent magnets, compromising stability and efficiency.
Innovation Solution
A motor rotor design featuring a cylindrical housing with securing holes and positioning rings equipped with flexible and securing ribs, allowing for easy and secure clamping of magnets along the inner wall, facilitating quicker and more precise assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual alignment and adhesion of permanent magnets are used, then the magnets can be assembled into the cylindrical housing, but the assembly process becomes labor-intensive and time-consuming
Solution Approach 1:
The patent replaces the manual mechanical alignment and adhesion system with a positioning ring mechanism that uses flexible ribs and securing ribs to automatically position and clamp magnets. The positioning ring with its flexible ribs provides mechanical positioning without requiring manual alignment or adhesive application, thereby substituting the labor-intensive mechanical process with an automated structural solution.
Solution Approach 2:
The positioning ring acts as an intermediary component between the cylindrical housing and the magnets. It includes flexible ribs that contact and position the magnets, and securing ribs that engage with the housing to hold the positioning ring in place. This intermediary structure enables precise magnet positioning without direct manual intervention or adhesive bonding.
2Ease of manufacture
If manual alignment and adhesion of permanent magnets are used, then the magnets can be assembled into the cylindrical housing, but the assembly precision is compromised
Solution Approach 1:
The positioning ring features localized flexible ribs that make contact with specific surfaces of the magnets at precise locations. Each flexible rib is positioned to contact the magnet at a predetermined point, providing localized positioning control. This local quality approach ensures that each magnet is positioned with high precision at its contact points with the flexible ribs.
Solution Approach 2:
The positioning ring is pre-configured with flexible ribs at specific positions and orientations before assembly. The securing ribs are also pre-positioned to engage with the housing at predetermined locations. This preliminary arrangement of the positioning structure ensures that when magnets are installed, they are automatically positioned with high precision without requiring manual alignment during the assembly process.
3Ease of manufacture
If manual alignment and adhesion of permanent magnets are used, then the magnets can be assembled into the cylindrical housing, but production stability is compromised
Solution Approach 1:
The flexible ribs are designed with specific elastic properties that allow them to deform and adapt to slight variations in magnet dimensions while maintaining consistent positioning force. The elasticity parameter of the flexible ribs enables the system to accommodate normal manufacturing tolerances without compromising positioning accuracy or assembly stability, thereby improving production reliability.
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 design enhances the assembly efficiency and stability of the motor rotor by allowing for quick and precise positioning of magnets, reducing labor and improving production economics.
Implementation Method 1
Each of the flexible ribs is radially pressable
Data Source
AI summary
A motor rotor includes a cylindrical housing, a positioning ring and a plurality of magnets. The cylindrical housing includes a plurality of securing holes. The positioning ring is disposed on the cylindrical housing. The positioning ring is disposed with a plurality of flexible ribs and a plurality of securing ribs disposed corresponding thereto. Each of the flexible ribs is radially pressable. The flexible ribs are disposed in the cylindrical housing, and each of the securing ribs is inserted in a respective corresponding one of the securing holes. The magnets are disposed in the cylindrical housing. Each of the magnets is clamped between the adjacent flexible ribs and is arranged annularly along an inner wall of the cylindrical housing, so as to facilitate assembly.