Modular Drive Assembly with Segmented Magnetic Packages
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Solution Overview
Problem
Existing drive arrangements lack flexibility and efficiency in generating varying driving forces, as they are not modular and often require complex magnetic field management, leading to difficulties in storage and transportation.
Innovation Solution
A modular drive arrangement with axially mounted packages of magnet-equipped discs separated by spacer sleeves, allowing for adjustable force generation by connecting one or more packages to the rotor shaft, and utilizing a hub part and feather key connection for secure attachment, along with metal reaction parts to induce eddy currents for driving force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If multiple packages with magnet-equipped discs are arranged axially on the rotor shaft to generate higher driving force, then the driving force increases, but the magnetic field interference and difficulty in storage and transportation increase
Solution Approach 1:
The drive arrangement is divided into multiple axially arranged packages, each containing magnet-equipped discs separated by non-magnetic spacer sleeves. This segmentation allows the magnetic fields of opposing magnets to cancel each other out within each package, reducing long-range magnetic field interference while maintaining high driving force through the cumulative effect of multiple packages
Solution Approach 2:
Non-magnetic spacer sleeves are introduced as intermediary elements between opposing magnet-equipped discs. These spacers physically separate the magnets while being transparent to magnetic fields, enabling the opposing magnets to generate counteracting magnetic fields that cancel long-range interference, thus solving the storage and transportation problem
2Object-affected harmful factors
If permanent magnets are arranged on opposing end faces of discs and spaced apart by spacer sleeves, then long-range magnetic field generation is prevented, but the structural complexity increases
Solution Approach 1:
Each package is segmented into distinct components: magnet-equipped discs, non-magnetic spacer sleeves, and fastening elements. This modular segmentation makes the structure easier to manufacture, assemble, and maintain, offsetting the apparent complexity through standardization and modularity
Solution Approach 2:
The spacer sleeves serve multiple functions: they physically separate opposing magnets to enable magnetic field cancellation, provide mechanical support for fastening discs to the rotor shaft, and act as non-magnetic barriers. This multi-functionality reduces the need for additional components, simplifying the overall structure
3Adaptability or versatility
If multiple packages are connected to the rotor shaft to create modular drive arrangements, then flexibility and adaptability increase, but the manufacturing and assembly complexity increase
Solution Approach 1:
The drive arrangement is divided into identical, interchangeable packages that can be independently manufactured and then assembled in different configurations on the rotor shaft. This segmentation enables modular flexibility while simplifying manufacturing through standardization of individual packages
Solution Approach 2:
Packages are designed to be nested axially on the rotor shaft, with each package containing discs, spacers, and magnets in a compact arrangement. This nesting approach allows multiple functional units to be integrated into a compact modular structure that is easy to manufacture and assemble
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
Enables the production of a wide variety of drive arrangements with adjustable force capabilities, secure attachment at high speeds, and reduced magnetic interference for easy storage and transportation, while maintaining stable and uniform force generation.
Implementation Method 1
In an arrangement with permanent magnets rotating past a metallic reaction part, eddy currents are induced and thus forces can be generated
Implementation Method 2
permanent magnets rotating past a metallic reaction part, eddy currents are induced and thus forces can be generated
Implementation Method 3
The discs are simply spaced apart from each other by means of a spacer sleeve, counteracting the attractive force exerted by the nearest opposing permanent magnets
Data Source
AI summary
The invention relates to a drive assembly, wherein a rotor shaft is connected to a hub part in a rotationally fixed manner, in particular by means of a parallel key connection, wherein at least one pack is arranged on the hub part, wherein each pack at least has disks, in particular two disks respectively, which disks are spaced apart from one another via a spacer sleeve, in particular wherein the packs are arranged axially one after the other, in particular stacked.