Vibrational Decoupling of Driving Motor Stator
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional drive modules for fans in motor vehicles require additional installation space for decoupling elements, leading to increased size and reduced flexibility due to the need for axial or radial decoupling, which compromises vibration damping and noise reduction.
Innovation Solution
A drive module design featuring radially symmetric vibration-damping decoupling elements integrated within the stator, allowing for a compact structure without affecting the concentric shaft guidance, and utilizing a fastening flange with a support element for secure attachment and vibration decoupling, enabling efficient space utilization and simplified assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional elastic decoupling elements (steel springs) are used to decouple the drive motor from surroundings, then vibration damping and noise reduction are improved, but additional installation space is required in axial or radial direction, resulting in larger drive module size
Solution Approach 1:
The decoupling element is arranged in the interior of the stator, nesting the vibration-damping component within the existing drive motor structure. This eliminates the need for additional axial or radial space while maintaining effective decoupling between the drive motor and mounting flange.
Solution Approach 2:
The decoupling element is positioned in the radial dimension within the stator interior rather than requiring additional axial length. This dimensional repositioning allows vibration damping functionality to be integrated without increasing the overall drive module envelope size.
2Object-affected harmful factors
If decoupling elements are positioned axially behind the drive motor or radially outside, then vibration decoupling is achieved, but the drive module design becomes less compact and flexibility is reduced
Solution Approach 1:
The stator interior space, which would otherwise be unused, is utilized to house the decoupling element. This multi-functional use of space achieves vibration decoupling while maintaining a compact, flexible design suitable for various installation configurations.
3Volume of moving object
If the decoupling element is designed as a hollow cylinder, then space within the stator is efficiently utilized and concentric shaft guidance is maintained, but the element must transmit comparatively large forces at small distances from the axis
Solution Approach 1:
The hollow cylindrical decoupling element functions as a flexible shell structure that can transmit large forces even when positioned at small radial distances from the rotation axis. The hollow cylinder geometry provides sufficient structural integrity while maximizing space utilization within the stator.
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
The compact design effectively decouples vibrations, reduces noise, and enhances the integration of components while maintaining the module's functionality and flexibility, resulting in improved performance and reduced installation complexity.
Implementation Method 1
at least one vibration-damping decoupling element... in order to minimize material-tiring vibrations and structure-borne noise
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a drive module, particularly for a fan in a motor vehicle, comprising a drive motor having a stator, at least one vibration-dampening decoupling element, and a fastening flange connected to the stator of the drive motor by the decoupling element, wherein the decoupling element is arranged in the interior of the stator and the fastening flange comprises a supporting element that is engaged in the decoupling element.