Rotatable Cable Gland with Fixation Disc for Thick-Walled Enclosures
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Solution Overview
Problem
Current cable connection systems for electrical and electronic components in thick-walled enclosures face issues such as leakage due to material shrinkage, improper tightening leading to damage, and require extensive assembly time and effort, especially with the use of cable screws and threaded holes.
Innovation Solution
A cable connection system featuring a rotatable connecting part with a fixation disc that locks into a tiered cable opening, allowing for adjustable angular positioning without screws or threads, using a spring metal crown disc for secure fixation and thermoplastic materials for sealing, reducing installation complexity and ensuring waterproofing up to IP69k standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cable screws are used for connecting cables, then secure connection can be achieved, but extensive assembly time and effort are required due to threaded holes and improper tightening
Solution Approach 1:
The invention replaces the threaded mechanical fastening system (cable screws with threaded holes) with a press-fit system using a cable gland and fixation disc, eliminating the need for threading and multiple screws while maintaining secure connection and reducing assembly time
Solution Approach 2:
The invention merges multiple functions into a single integrated cable gland component that provides both sealing and mechanical fixation, replacing the separate cable screw and sealing element assembly, thereby simplifying the assembly process while ensuring secure connection
2Ease of operation
If a rotatable connecting part with fixation disc is used, then adjustable angular positioning and easy assembly are achieved, but the device structure becomes more complex
Solution Approach 1:
The invention introduces a rotatable connecting part that can be freely positioned angularly before fixation, providing dynamic adjustability during assembly, and then becomes static after the fixation disc is pressed in, achieving easy positioning without permanent structural complexity
3Reliability
If thermoplastic materials are used for sealing, then waterproofing up to IP69k standards is achieved, but the sealing material may shrink or crawl under pressure
Solution Approach 1:
The invention changes the sealing approach from relying on material stability under high pressure to using a distributed pressing force mechanism that prevents material deformation, allowing thermoplastic materials to provide IP69k waterproofing without shrinkage or crawling
Data Source
AI summary
A cable connection system for a thick-walled case having a tiered cable opening with a an inner portion and an outer portion, the inner portion having a first diameter, and the outer portion having a second diameter larger than the first diameter, including a connecting part rotatably mountable in the tiered cable opening to direct cables of the cable connection system into a desired angular position with respect to the case. The connecting part includes a body with a first section having a first section diameter matching the inner portion first diameter and a second section having a second section diameter matching the outer portion second diameter. A fixation disc is configured to lock the connecting part into the tiered cable opening when the cables of the cable connection system are adjusted to the desired angular position. The fixation disc has a central opening configured to fit the second section diameter and a shaped outer contour having a diameter configured to press into the outer portion.