Silicone Cable Gland Bushing With Ribbed Sealing and Grip
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Solution Overview
Problem
Existing cable glands fail to effectively seal and grip cables, allowing ingress of water, oil, and debris due to inadequate sealing mechanisms.
Innovation Solution
A bushing with a ribbed interior surface made of silicone rubber, which compresses radially to engage and seal around the cable, combined with a groove for axial deformation, providing a watertight seal and gripping mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional cable gland sealing mechanism is used, then the structure is simple, but the sealing effectiveness is insufficient allowing ingress of water, oil, and debris
Solution Approach 1:
The bushing incorporates a ribbed interior surface with protruding ribs that create localized sealing zones around the cable. These ribs concentrate the sealing function at specific locations where they contact the cable jacket, providing effective sealing without requiring complete redesign of the entire bushing structure.
Solution Approach 2:
The sealing function is divided into multiple segments through the ribbed structure, with each rib acting as an independent sealing element. This segmentation allows the sealing action to be distributed around the cable circumference, improving overall sealing effectiveness while maintaining a relatively simple bushing body.
2Reliability
If a ribbed bushing structure is added to improve sealing and gripping, then sealing effectiveness improves, but manufacturing complexity increases
Solution Approach 1:
The ribbed structure is formed by modifying the bushing geometry during molding, changing the surface topology parameter from smooth to ribbed. This geometric modification is achieved through standard molding techniques and tooling, allowing the complex-looking ribbed structure to be manufactured efficiently without additional assembly steps.
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 bushing effectively inhibits the ingress of water, oil, and debris, meeting IP66 and NEMA 4X ratings, and withstands environmental temperatures from -60°C to -110°C.
Implementation Method 1
The bushing may include a rib on an interior surface of the bushing to facilitate sealing and gripping of a cable received in the cable gland. The bushing may comprise or be formed from a silicone rubber material.
Implementation Method 2
The bushing may comprise or be formed from a silicone rubber material.
Data Source
AI summary
A cable gland includes a bushing. The bushing may include a rib on an interior surface of the bushing to facilitate sealing and gripping of a cable received in the cable gland. The bushing may comprise or be formed from a silicone rubber material.