Split Retaining Nut Structure for Narrow Cable Entry Assembly
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Solution Overview
Problem
Existing retaining nuts for threaded cable connections face challenges in assembly through narrow openings, especially when a cable sleeve is already attached, and they fail to withstand high mechanical loads and ensure tightness.
Innovation Solution
A retaining nut design featuring a two-part structure with a base body and a ring, where the ring can be inserted into the base body, allowing the nut to be split for assembly through narrow openings, and a conical pressing region for enhanced force transmission and frictional connection, enabling the nut to fit through small openings and withstand mechanical forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the retaining nut is made as a single piece, then it can withstand high mechanical loads, but it cannot be assembled through narrow openings when a cable sleeve is already attached
Solution Approach 1:
The retaining nut is divided into two separate parts: a first retaining nut portion and a second retaining nut portion. This segmentation allows each part to be smaller in size, enabling them to be assembled through narrow openings even when a cable sleeve is already attached to the cable. The two parts work together to provide the same mechanical load-bearing capacity as a single-piece retaining nut.
2Ease of operation
If the retaining nut is split into two parts, then it can be assembled through narrow openings, but it may reduce mechanical strength
Solution Approach 1:
The first retaining nut portion is inserted into the second retaining nut portion, creating a nested configuration. This nesting arrangement allows the two separate parts to function together as a unified structure, distributing mechanical loads effectively and maintaining high strength characteristics despite being composed of multiple parts.
Solution Approach 2:
The first retaining nut portion is pre-assembled onto the cable through the narrow opening, and then the second retaining nut portion is added to complete the assembly. This preliminary action allows the smaller first portion to pass through the opening first, after which the larger second portion can be attached to provide the necessary mechanical strength.
3Reliability
If a cable sleeve is attached to the cable beforehand, then environmental sealing is improved, but the retaining nut cannot be assembled over the cable
Solution Approach 1:
By dividing the retaining nut into two smaller portions, the invention enables assembly through narrow openings even when a cable sleeve is already attached to the cable. The segmented structure allows the retaining nut components to pass through the restricted space and be positioned around the cable sleeve, maintaining both environmental sealing and assembly feasibility.
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
Enables assembly through narrow openings with a cable sleeve already attached, provides a secure and environmentally tight connection, and enhances mechanical load-bearing capacity.
Implementation Method 1
The seal, sleeve or clamping part, which is arranged between the base part and the retaining nut, is compressed radially inward when this is done.
Implementation Method 2
By means of the compression, the fed-through cable is fixed in a force-fitting manner.
Data Source
AI summary
The invention relates to a retaining nut (1) for a threaded cable connection which is provided for special installation situations. Here, a subsequent assembly of the retaining nut on a cable (60) with an integrated cable sleeve (70) is not possible. According to the invention, the retaining nut (1) has a two-part construction comprising a main part (10) and a ring (15). By virtue of the two-part retaining nut (1), it is possible to arrange the ring (15) on the cable (60) behind the cable sleeve (70) at an earlier point in time in the assembly process. In this manner, the assembly of the cable (60) with the cable sleeve (70) and the ring (15) is ensured and a subsequent connection of the main part (10) and the ring (15) is made possible.