AC Contactor Asymmetric Yoke Support Stroke Adjustment
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Solution Overview
Problem
Existing alternating current contactors lack protection for their coils and have complex designs due to the need for surge suppressors, which complicate assembly and manufacturing, and suffer from limited adjustability leading to reliability issues.
Innovation Solution
An alternating current contactor with a magnetic yoke support structure featuring asymmetric eccentric design, allowing for adjustable mounting and buffering, and integrated surge suppressor mounting that simplifies assembly and manufacturing by using different thickness sidewalls and identifying members for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a surge suppressor is mounted inside the product near the coil, then the coil is protected under special environments, but the mounting groove or concave hole must be provided which occupies large area and complicates the base design and mold manufacturing
Solution Approach 1:
The surge suppressor is extracted from the internal mounting near the coil and relocated to mount on the outer surface of the base. This extraction eliminates the need for internal mounting grooves or concave holes, simplifying the base structure and mold design while maintaining the coil protection function.
2Ease of manufacture
If the magnetic yoke support uses a symmetric non-eccentric structure, then the mold manufacturing process is simple, but the total stroke of the contactor cannot be adjusted if dimensional deviations occur
Solution Approach 1:
The magnetic yoke support is designed with an asymmetric eccentric structure where the thickness of sidewalls at two sides differs. This asymmetry enables adjustment of the total stroke by changing the assembly direction of the magnetic yoke support, allowing compensation for dimensional deviations while keeping the mold manufacturing process simple.
3Adaptability or versatility
If the sidewalls of magnetic yoke support are different in thickness, then the total stroke can be adjusted by changing assembly direction, but the structure becomes more complex
Solution Approach 1:
The magnetic yoke support employs an asymmetric eccentric structure with different thickness sidewalls, enabling total stroke adjustment through directional assembly changes. This design achieves adaptability while maintaining relatively simple manufacturing processes.
4Ease of operation
If identifying members are added to distinguish different thickness sidewalls, then the assembly process becomes more convenient, but the manufacturing complexity increases
Solution Approach 1:
The patent uses identifying members (such as differentiating marks or visual indicators) on the magnetic yoke support to distinguish between sidewalls of different thicknesses. This enables workers to quickly identify the correct assembly orientation, improving assembly convenience while the identifying members themselves are simple features that do not significantly increase manufacturing complexity.
Data Source
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AI summary
An alternating current contactor comprises a base and a magnetic yoke. The magnetic yoke is mounted on a bottom plate of the base. A magnetic yoke support for supporting and buffering the magnetic yoke is respectively provided at two sides of the magnetic yoke, wherein sidewalls at two sides of each magnetic yoke support, which are connected with the magnetic yoke are different in thickness. The magnetic yoke support of the alternating current contactor of the utility model has a simple structure due to the arrangement of an asymmetric eccentric structure. The up-down position of the magnetic yoke relative to the bottom plate of the base can be adjusted by changing an assembly direction of the magnetic yoke supports, thereby achieving the purpose of adjusting the total stroke of the product with high flexibility. When a dimension of a housing of a plastic part is abnormal, the magnetic yoke has a certain adjustment amount to ensure that the integral assembly of the product can be completed and the efficiency and reliability can be improved.