Shield Electric Wire Fixing Structure Preventing Shell Distortion
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Solution Overview
Problem
The existing shield connector structures face challenges in securely fixing the terminal end parts of braided shield electric wires, particularly with the risk of distortion or deformation of the shield shell when the screw member loosens, and are not adaptable to various types of shield electric wires or shield processes.
Innovation Solution
A fixing structure comprising a shield electric wire with a core wire, insulating coat, braided part, and sheath, along with a shield shell having a small diameter part and a main body part, where a shield ring is clamped to the small diameter part, and an inner holder is inserted into the main body part to ensure a secure and distortion-free connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screw member is used to fix the shield shell and shell holder, then the shield electric wire can be securely fixed, but the shield shell may be distorted or deformed when the screw member loosens
Solution Approach 1:
The patent replaces the screw member mechanical fastening system with a clamp that uses elastic deformation and friction force. The clamp is pressed against the shield electric wire to generate friction force, eliminating the need for screw members that can loosen and cause shield shell distortion.
Solution Approach 2:
The patent introduces a clamp as an intermediary component between the shield shell and the shield electric wire. The clamp acts as a mediator that secures the wire through friction force generated by pressing, rather than directly fastening the shield shell which would cause distortion.
2Reliability
If a complex fixing structure with multiple components is used, then the shield electric wire can be securely fixed, but the device complexity increases
Solution Approach 1:
The patent merges the fixing function into the clamp component itself, which integrates the pressing mechanism and friction-based securing in a single element. This eliminates the need for separate screw members, washers, and other fastening components, thereby reducing device complexity while maintaining secure fixing.
Solution Approach 2:
The clamp utilizes the friction force generated by its own pressing action to secure the shield electric wire. The structure is self-sufficient, using the pressure it applies to create the securing force, eliminating the need for additional fastening mechanisms or components.
Data Source
AI summary
A fixing structure includes: a shield electric wire; a shield shell having a small diameter part having a hollow tubular-shape through which the exposed part passes, and an outer periphery being covered with an end of a peeled braided part of the shield electric wire, and a main body part having a hollow shape extended from the small diameter part and through which the shield electric wire passes; a shield ring clamped to the small diameter part under a state that the end of the peeled braided part is located between the shield ring and the small diameter part; and an inner holder that is inserted into and fixed to an inner part of the main body part under a state that the shield electric wire passes through the inner holder.