Split Ferrite Core Casing With Rigid Hinged Halves
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Solution Overview
Problem
Existing casings for split ferrite cores require flexible hinges, limiting resin choices and complicating mold construction, and are unsuitable for high vibration and temperature environments.
Innovation Solution
A casing design with identical, hingedly connected halves that can be rotated 180°, using resilient tabs and locking mechanisms to secure the ferrite core without flexible hinges, allowing use of robust materials like nylon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If flexible hinges are used to connect casing halves, then the casing can be assembled and disassembled easily, but the choice of resin materials is limited and mold construction becomes complicated
Solution Approach 1:
The casing is divided into two separate halves that can be molded independently using simple molds, eliminating the need for complex unitary molds with integrated hinges. Each half is a complete functional unit that can be manufactured separately and then assembled through hinge connection.
2Ease of operation
If flexible hinges are used to connect casing halves, then the casing can be assembled and disassembled easily, but the resin material choices are limited to those providing required flexibility
Solution Approach 1:
By separating the casing into two independently molded halves connected by hinges, the patent enables use of rigid materials like nylon that would be unsuitable for unitary molded casings with integrated flexible hinges. The hinge connection provides the necessary flexibility without constraining the base material selection.
Solution Approach 2:
The casing system combines rigid resin material (such as nylon) for the casing halves with a separate hinge mechanism, creating a composite structure that leverages the strength and durability of rigid materials while incorporating the flexibility needed for assembly and disassembly operations.
3Device complexity
If unitary molded casings with living hinges are used, then the casing structure is simplified, but the molds become extremely complicated
Solution Approach 1:
The casing structure is segmented into two halves that are molded separately using simple, straightforward molds. This segmentation transfers complexity from the molding process to the assembly process, allowing each half to be manufactured with simple tooling while maintaining the overall structural integrity of the complete casing.
4Ease of manufacture
If injection-moldable thermoplastics are used for casings in vibration and heat environments, then the casing can be easily manufactured, but the material is not suitable for long time exposure to vibration and elevated temperatures
Solution Approach 1:
The patent employs a composite construction combining rigid resin material (such as nylon) with a hinge mechanism, creating a structure that leverages the strength and durability of rigid materials while incorporating the flexibility needed for assembly and disassembly operations. This composite approach enables use of materials with superior thermal and vibrational stability.
Solution Approach 2:
The hinge connection introduces a controlled flexible element that allows the rigid casing halves to accommodate thermal expansion and vibration-induced stresses through rotational movement, preventing stress concentration and material failure in high-temperature and high-vibration environments.
Data Source
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AI summary
A casing assembly is provided for holding a split ferrite core on at least one conductor. The casing assembly has first and second identical casing halves. Each casing half has first and second opposed side walls with inner surfaces that face toward one another and outer surfaces that face away from one another. First and second locks are formed on the outer surface of the first side wall of each casing half, and first and second hinge structures are formed on the outer surface of the second side wall of each casing half. The hinge structures are configured so that the first hinge structure of one casing half rotatably engages the second hinge structure of the other casing half. The first and second locks are disposed and configured so that first lock of one casing half is releasably lockable with the second lock of the other casing half.