Armored Cable Gland With Collapsible Grounding Ring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cable gland assemblies require a tedious and time-consuming process to clamp armored cables, involving removal of the outer layer, bending, and cutting the armor wires, which complicates the installation and grounding process.
Innovation Solution
A cable gland design featuring a flexible metal helical member with hooks or loops that encircles the armor, allowing for easy clamping without the need to bend or cut the armor, combined with anti-loosening mechanisms to secure the clamping rings in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional clamping method with compression ring and clamping ring is used, then reliable armor clamping and grounding is achieved, but the installation process becomes tedious and time-consuming
Solution Approach 1:
The patent combines the compression ring and clamping ring into a single integrated unit with interlocking teeth. This merging eliminates the need for separate installation steps, allowing the armor to be clamped and grounded simultaneously in one operation, thus reducing installation time while maintaining reliable clamping and grounding functions.
Solution Approach 2:
The integrated clamping structure comes pre-configured with interlocking teeth and grounding contacts in the correct positions. The armor is clamped and grounded in advance through the single insertion action, eliminating the need for subsequent separate grounding operations and reducing overall installation time.
2Manufacturing precision
If traditional armor preparation method is used (removing outer layer, bending, cutting), then proper armor positioning is achieved, but the preparation process becomes complex and tedious
Solution Approach 1:
The patent extracts the complex armor preparation steps (removing outer layer, bending, cutting) and replaces them with a single insertion action. The integrated clamping structure accepts the armor in its original state, eliminating the need for tedious preparation while maintaining precise positioning through the interlocking teeth design.
Solution Approach 2:
The patent changes the operational parameters from multiple precise manual operations (bending angle, cut length, insertion depth) to a single insertion force parameter. The interlocking teeth automatically achieve proper positioning without requiring the operator to control multiple geometric parameters, greatly simplifying the operation.
3Reliability
If multiple separate components (internal nut, external nut, compression ring, clamping ring) are used, then secure clamping and sealing is achieved, but the device complexity increases
Solution Approach 1:
The patent merges the compression ring, clamping ring, internal nut, and external nut into a single integrated clamping structure. This consolidation maintains the secure clamping function through interlocking teeth while eliminating the complexity of assembling and coordinating multiple separate components, thus reducing device complexity without sacrificing clamping security.
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
Facilitates a faster and more efficient clamping process that maintains electrical continuity and grounding without the need for complex armor preparation, ensuring a secure and reliable cable connection.
Implementation Method 1
said circular member is made of a flexible metal blade or a flexible wire
Implementation Method 2
allows the armor 21 of the cable 2 to be grounded, by conduction of the armor 21
Implementation Method 3
said circular member comprises at each end a fastening portion forming a hook, each hook being intended to engage in a notch formed respectively in said clamping ring and said compression ring
Implementation Method 4
said anti-loosening means comprising on the one hand a toothed portion mounted on the outer circumference of a first ring amongst the compression ring and the clamping ring, the second ring comprising an anti-reverse pawl engaging said toothed portion
Data Source
AI summary
A cable gland for an armored cable comprising at least an exposed portion of the armor, comprising a clamping ring and a compression ring intended to be tightened or rotatably engaged to each other, said cable gland comprises a current conducting circular member, intended to surround the exposed portion of the armor of said cable and being attached at one end to the compression ring and at another end to the clamping ring, so that when the clamping ring and a compression ring are tightened or rotatably engaged to each other, the circular member is collapsed against an exposed portion of the armor of the cable.