Mounting Bracket Metallic Bush Length for Wear Prevention
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Solution Overview
Problem
Conventional cable protection and guide devices experience wear damage and unreliable mounting due to the mismatched lengths of metallic bushes and mounting holes, leading to snaking movements and reduced lifespan.
Innovation Solution
The device features mounting brackets with a metallic bush length shorter than the mounting hole length, allowing for elastic deformation and a tapered inner surface to ensure secure fastening and accommodate size variations, preventing wear and ensuring stable cable guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the metallic bush length is made equal to or longer than the mounting hole length to prevent wear, then wear protection is improved, but the mounting bracket cannot be reliably fixed and exhibits movement
Solution Approach 1:
The patent changes the length parameter of the metallic bush to be shorter than the mounting hole length, creating a specific dimensional relationship that enables both wear protection and reliable mounting fixation simultaneously
2Reliability
If the metallic bush length is made shorter than the mounting hole length to enable reliable mounting, then mounting reliability is improved, but wear protection is reduced
Solution Approach 1:
The patent optimizes the length parameter of the metallic bush to be shorter than the mounting hole length, creating a specific dimensional relationship that enables both wear protection and reliable mounting fixation simultaneously
3Manufacturing precision
If the metallic bush length matches the mounting hole length precisely, then manufacturing precision is improved, but the assembly cannot accommodate size variations and is difficult to assemble
Solution Approach 1:
The patent changes the dimensional parameter relationship to make the metallic bush shorter than the mounting hole, creating a tolerance buffer that accommodates size variations and simplifies assembly while maintaining sufficient precision
Solution Approach 2:
The patent designs the mounting hole to be longer than the metallic bush, creating a built-in tolerance buffer that beforehand compensates for dimensional variations, making assembly easier and more robust
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 provides strong, reliable, and long-lasting fastening of the mounting bracket, preventing breakage and wear damage while allowing for easy assembly and accommodating size variations, ensuring smooth cable protection and guidance.
Implementation Method 1
The difference between the length of the metallic bush in a bolt inserting direction and the length of the mounting hole in a bolt inserting direction is set within a range of elastic deformation of the synthetic resin forming the mounting bracket
Implementation Method 2
the mounting hole of the mounting bracket is formed of a tapered inner circumferential surface which engages the metallic bush
Data Source
AI summary
A cable protection and guide device in which wear damage in mounting portions of a mounting bracket is avoided and the mounting bracket is reliably and strongly mounted so that the cable is smoothly protected and guided. The mounting operation of the bracket is easy. A cable protection and guide device includes a mounting bracket having a mounting hole which surrounds and accommodates a tap bolt. A threaded portion 162 of the tap bolt includes a metallic bush 170 and the length H1 of the metallic bush 170 in a bolt inserting direction is shorter than the length H2 of the mounting hole 143 in a bolt inserting direction.