Crimp Sleeve Connector Assembly for High Hold Without Cable Deformation
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Solution Overview
Problem
Crimping cables to connectors causes deformation, which negatively affects the mechanical holding force and electrical properties of the connector assembly.
Innovation Solution
A crimp sleeve with a small diameter, inward-facing lugs, and a nose that interacts with the cable's outer conductor, along with recesses and protrusions, enhances the mechanical holding force while minimizing cable deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the cable is crimped with a crimp sleeve to increase holding force, then the mechanical holding force between cable and connector is improved, but the cable and connector undergo deformation that deteriorates electrical properties
Solution Approach 1:
The crimp sleeve is segmented into multiple functional zones: a compression section with inward-facing lugs for mechanical engagement, a nose section for positioning, and an expansion section for electrical contact. This segmentation allows each zone to perform its specific function without causing deformation in other critical areas, thereby maintaining electrical properties while achieving strong mechanical holding force.
Solution Approach 2:
Different sections of the crimp sleeve have different geometric properties tailored to their specific functions. The compression section has lugs with specific curvature radii for optimal cable engagement, the nose has a precise diameter for positioning, and the expansion section has a larger diameter for electrical contact. This local differentiation ensures that deformation is localized to non-critical areas while electrical contacts remain intact.
2Strength
If compression force is increased to improve mechanical holding force, then the holding force between crimp sleeve and cable is improved, but electrical properties are further degraded due to additional compression
Solution Approach 1:
The crimping force is segmented and applied locally through the inward-facing lugs in the compression section, rather than uniformly across the entire crimp sleeve. This localized force application achieves the necessary mechanical holding force while minimizing compression on the electrical contact sections, thereby preserving electrical properties.
3Strength
If the nose diameter is increased to improve engagement with the cable, then the mechanical interaction is improved, but the ability to engage the braided shield effectively is reduced
Solution Approach 1:
The nose diameter is precisely optimized to match the outer diameter of the braided shield, allowing effective engagement with the shield while the inward-facing lugs in the compression section engage with the cable core. This local differentiation of engagement points ensures both mechanical strength and effective shield contact without interference.
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
The solution increases the holding force and maintains the electrical integrity of the connector assembly by reducing deformation and interference.
Implementation Method 1
The interaction of the nose with an outer conductor of the cable is particularly advantageous. The interaction of a nose with a braided shield or outer conductor of the cable is particularly effective because a nose can hook or claw particularly well into the braid of an outer conductor.
Implementation Method 2
The force with which the cable is crimped to the connector affects the mechanical holding force between the cable and the connector. The problem with this is that crimping is associated with deformation of the cable and the connector.
Implementation Method 3
A braided shield of the cable engages the recess. A braided shield deforms particularly advantageously during a crimping process by deforming into the recess.
Implementation Method 4
Depending on the number of protrusions provided, geometric deformation of the protrusions or deformation of the cable in the area affected by the protrusions can be minimized. This reduces electrical interference caused by cable deformation.
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to a connector arrangement (100) with a connector (101) and a cable (50) connected to the connector, wherein the cable has an inner conductor (51) and an outer conductor (52) and the connector has an inner conductor (103) and an outer conductor (105), wherein the connector arrangement has a crimp area in which the cable is crimped with a crimp sleeve (10), wherein the crimp sleeve has at least one radially inwardly directed lug (11).