Drone Motor Support Member Axial Force Resistance
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Solution Overview
Problem
Drone motors face challenges in withstanding axial forces during rotation, requiring complex designs and increasing material costs, which also degrade motor efficiency due to the need for large diameter rotating shafts.
Innovation Solution
A drone motor design featuring a rotating shaft with a stator and rotor, supported by a support member and bearings, allowing for adjustable shaft and bearing sizes, and a lightweight structure to reduce weight and enhance axial force resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If many fixing members are designed to withstand axial force, then the motor can withstand axial force, but material cost increases and assembly process becomes complicated
Solution Approach 1:
The support member integrates multiple functions: it supports the rotating shaft, provides mounting position for bearings, and transmits axial forces. By combining these functions into a single integrated component rather than using separate fixing members, the assembly process is simplified while maintaining axial force resistance capability
Solution Approach 2:
The support member serves multiple purposes simultaneously: structural support for the rotating shaft, mounting base for bearings, and force transmission element for axial loads. This multi-functional design reduces the number of components needed and simplifies the overall motor structure
2Strength
If a rotating shaft with large diameter is used to secure strength, then axial force resistance is improved, but motor efficiency is degraded
Solution Approach 1:
Bearings are introduced as intermediary elements between the rotating shaft and the support member. These bearings enable the shaft to rotate with minimal friction while the support member withstands the axial forces. This mediation allows the shaft to have smaller diameter while maintaining strength through proper bearing selection and arrangement
Solution Approach 2:
The design replaces direct mechanical contact and friction between the shaft and support structure with bearing-based rotation. This substitution reduces frictional losses and allows for more efficient motor operation while maintaining the necessary structural strength
3Strength
If material cost increases due to additional fixing members, then axial force resistance is improved, but manufacturing cost increases
Solution Approach 1:
By merging the functions of multiple fixing members into a single integrated support member, the total quantity of materials required is reduced. The support member is designed to handle axial forces, support the rotating shaft, and provide bearing mounting positions, thereby eliminating the need for separate fixing components and reducing material costs
Data Source
AI summary
One embodiment discloses a drone motor and a drone comprising the same, the drone motor comprising: a rotating shaft; a stator comprising a hole into which the rotating shaft is inserted; and a rotor arranged on the outer side of the stator, wherein a support member is arranged between the rotating shaft and the stator, and a bearing is arranged between the support member and the stator, wherein the support member comprises a body part which surrounds the rotating shaft, and a flange part which couples with the rotor.