Lamination Stack Projections for Ignition Flywheel Alignment
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Solution Overview
Problem
The positioning of a lamination stack relative to a flywheel in ignition systems is challenging, as existing methods require labor-intensive assembly with gapping tools and can result in inconsistent energy generation due to variable wear patterns.
Innovation Solution
Incorporating integrally formed projections with frangible portions on the lamination stack plates that engage the flywheel to establish a consistent distance, allowing for self-alignment and wear-based adjustment without additional spacers, ensuring precise positioning and reduced wear on components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional gapping tools and assembly methods are used to position the lamination stack relative to the flywheel, then the positioning can be achieved, but the assembly process becomes labor-intensive and time-consuming
Solution Approach 1:
The patent incorporates pre-formed projections with frangible portions directly onto the lamination stack plates during manufacturing. These projections are prepared in advance to engage with the flywheel, eliminating the need for on-site gapping tools and manual positioning adjustments during assembly.
Solution Approach 2:
The frangible portions are designed to automatically break away during assembly when the projections engage the flywheel, enabling self-alignment and self-positioning of the lamination stack without requiring additional tools or manual intervention for gapping adjustments.
2Manufacturing precision
If traditional positioning methods without integrated location features are used, then assembly can proceed, but positioning precision and consistency become variable due to manual adjustment differences
Solution Approach 1:
The patent merges the positioning function directly into the lamination stack structure by integrating projections with frangible portions onto the plates. This combines the location feature, alignment mechanism, and spacing function into a single integrated component, ensuring consistent positioning without adding external complexity.
Solution Approach 2:
The frangible portions are strategically located at specific points on the projections where controlled breaking occurs. This localized feature provides precise control over the breaking point and wear characteristics, ensuring consistent positioning while minimizing unnecessary structural complexity in other areas of the lamination stack.
3Reliability
If projections with large surface area are used to engage the flywheel, then engagement is achieved, but wear and scoring on components increases
Solution Approach 1:
The frangible portions are designed with specifically controlled surface areas that are optimized to provide sufficient engagement reliability while minimizing contact area with the flywheel. This localized optimization reduces wear and scoring on both the lamination stack and flywheel surfaces while maintaining reliable engagement during operation.
Solution Approach 2:
The frangible portions are designed to dynamically adapt during operation - initially providing full engagement surface area for reliable positioning, then progressively wearing down or breaking away to reduce contact area and minimize wear on the flywheel and lamination stack over time.
4Ease of operation
If no frangible portions are incorporated on the projections, then the structure remains simple, but the ability to self-align and adjust for wear is lost
Solution Approach 1:
The frangible portions are pre-formed on the projections during manufacturing, preparing the structure for automatic self-alignment during assembly. This preliminary preparation enables the lamination stack to automatically adjust its position relative to the flywheel without requiring external tools or complex adjustment mechanisms.
Solution Approach 2:
The frangible portions enable the lamination stack to self-adjust and self-align during assembly and operation. As the projections engage the flywheel, the frangible portions automatically break away or wear down, providing automatic compensation for wear and maintaining proper positioning without requiring external intervention or complex adjustment mechanisms.
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
Facilitates efficient and precise alignment of the lamination stack relative to the flywheel, maintaining consistent energy generation and reducing assembly complexity, while minimizing wear and scoring on components.
Implementation Method 1
The projection may be constructed to engage the adjacent component and to be worn down by movement of the adjacent component relative to the projection
Implementation Method 2
As the flywheel rotates, the magnets pass by the lamination stack and coils and induce electrical energy in the coils
Data Source
AI summary
In at least some implementations, a lamination stack includes a plurality of plates coupled together, each plate including at least one leg that collectively define a leg of the stack, with the leg of the stack arranged so that a wire coil may be arranged on the leg of the stack, and wherein the leg of the stack includes a location feature arranged to facilitate location of the stack relative to an adjacent component. In at least some implementations, the location feature may be integrally formed with at least one of the plates, and may be defined by a projection extending from a free end of at least one leg of the stack.