Cable Fixing Member With Meshing Grooves For Vibration Resistance

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Solution Overview

Problem

Conventional metal clamps used for fixing cables to vehicle bodies are prone to disconnection due to inadequate grasping force, uneven force distribution, and unintended strain, especially under conditions like vibration and foreign matter adherence, leading to positional deviations and potential damage.

Innovation Solution

A cable fixing member comprising an intermediate member crimped and tightened to the cable, paired with bracket members that clamp the cable through grooves with a meshing inner surface shape, providing a secure and equalized grasping force to prevent disconnection and positional deviation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional metal clamp is used to fix the cable, then the cable can be held and fixed to the vehicle body, but the grasping force is small which leads to disconnection under excessive tensile force

Engineering Contradiction:

Improvefixation reliabilityVSAvoidgrasping force

Core Design Contradiction:

ReliabilityVSForce

Solution Approach 1:

The clamp body is divided into an intermediate member (inserted into the cable) and bracket members (clamping the intermediate member), allowing each part to contribute differently to the grasping force and enabling more reliable fixation under tensile loads

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The intermediate member acts as an intermediary between the cable and the bracket members, transferring and distributing the grasping force more effectively to prevent disconnection

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the cable is clamped by the metal component, then the cable can be fixed, but the force is easily unevenly added which causes positional deviation

Engineering Contradiction:

Improvefixation reliabilityVSAvoidpositional accuracy

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The grooves on the bracket members are designed with specific local geometries to distribute the clamping force uniformly across the intermediate member, preventing localized stress concentration and positional deviation

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The clamp structure is designed to create equipotential force distribution through the grooves and intermediate member interface, ensuring uniform force application that maintains the cable at its designed position without deviation

Inventive Principle:

Principle #12Equipotentiality

3Ease of manufacture

If a cushioning cylindrical member attached by adhesive is used, then the cable can be held, but it is difficult to surely fix the cable when great force is added

Engineering Contradiction:

Improveassembly easeVSAvoidgrasping force

Core Design Contradiction:

Ease of manufactureVSForce

Solution Approach 1:

The adhesive-based mechanical system is replaced with a crimping-based mechanical system that provides superior force resistance while maintaining ease of manufacture through standardized crimping processes

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The intermediate member combines the cable with a crimped metal structure to create a composite assembly that can withstand great forces while maintaining ease of assembly through the bracket members

Inventive Principle:

Principle #40Composite materials

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 ensures a reliable and secure fixation of cables with sufficient grasping force, preventing disconnection and positional deviation, even under conditions of excessive tensile force or vibration, while allowing for easy adjustment to correct cable twist during installation.

Implementation Method 1

an intermediate member crimped and tightened to the cable

Methodology Applied

Scientific EffectCrimping: Deformation

Implementation Method 2

an inner surface shape of the groove is formed to mesh with an outer surface shape of the intermediate member

Methodology Applied

Scientific EffectMechanical interlocking: Geometry

Data Source

PatentUS8466364B2Cable fixing member and cable fixing structure

Publication Date: 2013.06.18 HITACHI CABLE LTD

AI summary

There is provided a cable fixing member, comprising: an intermediate member crimped and tightened to a cable; a pair of bracket members for clamping and grasping one or a plurality of cables with the intermediate member tightened thereto, through the intermediate member; and one or a plurality of grooves formed on facing surfaces of the pair of bracket members by which the cable is clamped, for clamping the cable through the intermediate member, wherein an inner surface shape of the groove is formed to mesh with an outer surface shape of the intermediate member which is crimped and tightened to the cable.