Modular Stacking Unit for Inductive Core Plate Alignment
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Solution Overview
Problem
Existing methods for manufacturing industrial chokes with air gaps are time-consuming and costly, and lack flexibility in adjusting inductance and core disk spacing, making it difficult to produce components with reproducible electromagnetic properties and varying frequency and power ratings.
Innovation Solution
A stacking unit composed of form-fitting elements that can be easily assembled and adjusted, allowing for variable length and inductance settings through spring elements and annular outer walls, enabling precise alignment and spacing of core plates for optimal magnetic energy storage and minimal stray fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If individual core parts are arranged and glued to one another to produce magnetic core columns, then the core pieces can be assembled into inductive components, but the process becomes time-consuming and costly with difficulty in achieving reproducible electromagnetic properties
Solution Approach 1:
The stacking unit is divided into multiple individual stacking elements that can be independently assembled. Each stacking element holds core disks in a predetermined arrangement, and multiple elements are connected together to form the complete core column. This segmentation allows for standardized manufacturing of individual elements while enabling flexible assembly of different configurations, thereby improving both manufacturing efficiency and reproducibility.
Solution Approach 2:
The stacking elements are pre-assembled with core disks in the desired positions and orientations before final assembly into the complete core column. This preliminary arrangement ensures correct alignment and spacing is achieved without requiring complex alignment procedures during final assembly, reducing manufacturing time and improving reproducibility of electromagnetic properties.
2Adaptability or versatility
If a plastic shell element with fixed length is used to accommodate core disks, then the core disks can be held in position, but flexibility is lost for producing different types of chokes and fine adjustment of inductance is no longer possible
Solution Approach 1:
The fixed plastic shell is segmented into multiple adjustable stacking elements. Each stacking element can be independently positioned and adjusted, allowing the overall length and configuration of the core column to be varied. This enables production of different choke types while maintaining the ability to adjust inductance by changing the spacing between core disks within the modular structure.
Solution Approach 2:
The stacking elements incorporate adjustable spacing mechanisms that allow the distance between core disks to be dynamically changed after assembly. This dynamic adjustment capability enables fine-tuning of inductance values without requiring complete disassembly or replacement of the entire core structure, maintaining versatility across different choke types.
3Adaptability or versatility
If axial pressure is exerted on the front and rear of the core column to adjust the length, then the inductance can be adjusted within limits, but fine adjustment is only possible within relatively narrow limits of approx. +/- 15%
Solution Approach 1:
The adjustment mechanism is segmented into multiple discrete stacking elements rather than relying on continuous axial compression. Each stacking element provides a defined spacing increment, allowing precise control of the overall core column length and inductance. This segmented approach expands the adjustment range beyond the narrow +/- 15% limit while maintaining precision through standardized element dimensions.
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 solution provides a flexible and cost-effective method for producing inductive components with adjustable inductance, accommodating customer-specific requirements and enabling wide-range variation in component length and inductance without compromising stability, suitable for both small and large series production.
Implementation Method 1
The stacking elements have spring elements (10) which resiliently support the core plates (12) against one another in such a way that the distances between adjacent core plates (12) can be varied within a wide range
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
Disclosed is a stacking unit for holding core plates of an inductive component, comprising a plurality of stacking elements inside or on each of which one of the core plates is held, the stacking elements being designed in such a way that a portion of one stacking element can be accommodated in a portion of another stacking element and the individual stacking elements including the core plates held therein or thereon can be stacked next to one another.