Insulating Terminal Casing with Open Frame Structure
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Solution Overview
Problem
Existing insulating material housings for electrical terminals are inefficient in reducing size while maintaining effective insulation and conductor guidance, as they require redundant insulating material walls that do not contribute to electrical insulation.
Innovation Solution
The conductor routing part features an open frame structure with wall-free sections that allow the insulating jacket of the electrical conductor to replace missing insulating material, reducing the overall size by eliminating redundant insulation and using transparent and non-transparent plastics for visibility of correct insertion depth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulating material walls are used in the base housing and conductor guide part, then electrical insulation is ensured, but the terminal size increases due to redundant insulation layers
Solution Approach 1:
The patent removes the insulating material walls from the base housing and conductor guide part, extracting the redundant insulation function. The insulating jackets of the electrical conductors themselves are utilized to provide the necessary electrical insulation, eliminating the need for separate insulating walls and thereby reducing the terminal's overall height.
Solution Approach 2:
The insulating jackets of the electrical conductors serve dual purposes: they protect the conductor cores and simultaneously provide the electrical insulation function that would otherwise require separate insulating material walls. This self-service approach eliminates redundant insulation layers and reduces terminal size.
2Ease of operation
If transparent plastic is used for both base housing and cover insert, then insertion depth visibility is improved, but optical reflections and distractions occur
Solution Approach 1:
The patent applies different transparency properties to different parts of the housing. The base housing is made of transparent plastic to allow visibility of the insertion depth, while the cover insert is made of non-transparent plastic to eliminate optical reflections and distractions. This local differentiation of material properties optimizes both visibility and optical comfort.
Solution Approach 2:
The patent utilizes optical property changes by selecting materials with different transparency characteristics. The transparent base housing allows light transmission for visibility, while the non-transparent cover insert blocks light to prevent reflections, creating an optimal optical environment for insertion verification.
Data Source
Figure 1~5
AI summary
The casing has a cover unit (12) in the form of a conductor lead unit and interposed in housing opened in front side, which is made up of a transparent insulating material. The conductor lead unit is manufactured from a non-transparent insulating material. The conductor lead unit discloses an open frame structure with open wall-free frame fields (21) in the region of its conductor lead channels. An insulation cover of the electrical conductor can be interposed in the frame structure.