Shield Terminal Connection Structure for Braided Wire Folding
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Solution Overview
Problem
The existing shield terminal connection structure faces difficulties in folding back and caulking the braided wire at a specified position due to the lack of a base point, leading to challenges in workability and stability.
Innovation Solution
A connection structure for a shield terminal that includes a tubular caulked portion and a pressing urging portion, where the braided wire is pressed and urged to restrict movement, allowing easy folding and caulking, with a cylindrical portion featuring parallel notch grooves for plastic deformation and a wire guiding portion for smooth insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the braided wire is inserted into the non-shielded wire without a base point, then the shield structure can be assembled, but the end portion is hard to be folded back at a specified position and a predetermined braided length
Solution Approach 1:
The pressing urging portion is formed by plastic deformation before the braided wire is inserted, creating a pre-formed urging structure that will automatically press the braided wire against the sheathed wire once assembled, providing a base point for accurate folding
Solution Approach 2:
The pressing urging portion changes the physical state of the braided wire by applying continuous pressing force, transforming it from a movable state to a fixed state against the sheathed wire, thereby enabling precise positioning for folding
2Manufacturing precision
If the braided wire is folded back without movement restriction, then the folding process is simpler, but the end portion cannot be folded back at a specified position with predetermined length
Solution Approach 1:
The pressing urging portion is localized at a specific position within the terminal, providing movement restriction only where needed, while other parts of the structure remain simple and unchanged
Solution Approach 2:
The terminal structure is divided into distinct functional segments: the pressing urging portion for movement restriction, the caulked portion for electrical connection, and the cylindrical portion for structural support, allowing each to perform its specific function independently
3Ease of operation
If the braided wire is caulked without movement restriction, then the caulking process is easier, but the braided wire moves during caulking making the work difficult
Solution Approach 1:
The pressing urging portion is pre-formed by plastic deformation to create a continuous pressing force that acts on the braided wire before and during the caulking process, preventing movement and ensuring reliable caulking
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
This configuration enables easy folding and caulking of the braided wire at a specified position, enhancing workability and minimizing damage, while maintaining the structural integrity and shield effectiveness.
Implementation Method 1
a pressing urging portion which is provided near the caulked portion, and presses and urges the braided wire not to move the braided wire with respect to the sheathed wire
Implementation Method 2
the pressing urging portion is configured to be plastically deformed such that a portion, which is interposed between a pair of parallel notch grooves notched by a predetermined length in a circumferential direction of the cylindrical portion, protrudes to an inner side of the cylindrical portion
Data Source
AI summary
A connection structure of a shield terminal (30) is electrically connected and fixed to an opening end part of a tubular braided wire (20) covering a covered wire (10) along the long direction. The shield terminal (30) has: a tubular caulked part (33) for which the part folded back outwardly at the opening end part of the braided wire (20) is fixed by caulking to the outer peripheral surface by a caulking sleeve (40); and a pressure energizing part (35) provided near the caulked part (33) and pressed and energized so that the braided wire (20) does not move in relation to the covered wire (10).