Shielded Cable Connector Crimp Structure for Higher Pullout Force
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Solution Overview
Problem
Existing cable and connector assemblies face challenges in maintaining a sufficient fixing force, particularly when subjected to pulling forces, which can lead to disconnection and require further enhancement.
Innovation Solution
A connector design featuring a braided member with a folded portion, a metal sleeve, and a shield member with barrel-side and sleeve-side protrusions, where the barrel-side protrusions project inwardly and the sleeve-side protrusions project outwardly, increasing the contact area and enhancing the fixing force. Additionally, a tapered surface on the sleeve aids in cable insertion, and multiple barrel-side protrusions improve the contact area and manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a single barrel-side protrusion is used to support the sleeve, then the fixing force is improved, but the contact area is insufficient for further enhancement
Solution Approach 1:
The single barrel-side protrusion is divided into multiple protrusions (first, second, third, and fourth barrel-side protrusions) arranged around the cable. This segmentation increases the total contact area between the barrel and the sleeve, thereby enhancing the fixing force without compromising the structural integrity of the connector.
Solution Approach 2:
The protrusions are arranged in a circumferential pattern around the cable, transitioning from a single-point contact to a multi-point distributed contact system. This dimensional arrangement maximizes the contact area along the circumferential direction, improving both the fixing force and the stability of the connection.
2Stability of the object's composition
If the braided member is folded back toward the sheath, then the structural integrity is improved, but the assembly complexity increases
Solution Approach 1:
The braided member is pre-formed with a folded portion during the manufacturing process, so that the folding action is completed before assembly. This preliminary action ensures the structural integrity of the folded portion while simplifying the final assembly process, as the folded structure is already in place and only needs to be positioned and secured.
3Strength
If the sleeve is crimped tightly to the sheath, then the fixing force is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The crimping force is distributed to specific localized areas where the barrel-side protrusions contact the sleeve, rather than requiring uniform crimping across the entire sleeve. This local quality approach allows for effective fixing force while reducing the overall manufacturing precision requirements, as the critical contact points are concentrated at the protrusion locations.
Data Source
AI summary
A connector with cable is provided with a cable including a wire, a sheath and a braided member interposed between the wire and the sheath, the braided member being formed by braiding conductive wire materials, the braided member being provided with a folded portion formed by folding the braided member exposed from an end of the sheath toward the sheath, a sleeve made of metal and externally fit to an outer surface of the sheath inside the folded portion in a radial direction of the cable, a shield member made of metal and including a barrel for sandwiching the folded portion between the sleeve and the barrel while being crimped to an outer surface of the folded portion, and a housing covered with the shield member. A sleeve-side protrusion projecting radially outwardly of the cable is formed on a rear end part of the sleeve.