Harness Protector Stopper Width Limits Corrugated Tube Wear
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Solution Overview
Problem
Conventional harness protectors with stoppers protruding from the inner surface of wire lead-out ports cause wear on wire harnesses due to interference, as the stoppers can exceed the inner radius of corrugated tubes, leading to excessive penetration and wear issues.
Innovation Solution
A harness protector design featuring stoppers with a larger width dimension than the valley portions of the corrugated tube, positioned to prevent excessive penetration and reduce interference, with chamfered edges to minimize wear, and no protrusions from the bottom wall to allow for easier drainage and reduced vibration-induced wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a stopper protrudes from the inner circumferential surface of the wire lead-out port to prevent excessive penetration of the corrugated tube, then the penetration is limited, but the stopper interferes with the wire harness causing wear
Solution Approach 1:
The stopper width dimension is changed to be larger than the valley portions of the corrugated tube. This dimensional change allows the stopper to effectively block the corrugated tube penetration while its broader profile prevents it from contacting the wire harness, thereby solving both the penetration control and wear prevention requirements simultaneously
2Manufacturing precision
If the stopper protruding height is increased to prevent excessive penetration, then penetration control is improved, but interference with the wire harness increases causing more wear
Solution Approach 1:
Instead of increasing the protruding height of the stopper, the invention changes the width dimension of the stopper to be larger than the valley portions. This dimensional shift achieves penetration control through the increased width rather than height, preventing the stopper from contacting and damaging the wire harness while maintaining effective penetration limitation
3Manufacturing precision
If the stopper width is increased to prevent excessive penetration, then penetration control is improved, but interference with the wire harness is reduced
Solution Approach 1:
The stopper width dimension is specifically designed to be larger than the valley portions of the corrugated tube. This width increase provides effective penetration control by blocking the corrugated tube, while the broader width actually reduces interference with the wire harness by positioning the stopper's contact points away from the wire harness path
Data Source
AI summary
Provided are a harness protector 10 that is mounted, in use, to a wire harness 18 including, on an outer circumference thereof, a corrugated tube 20 including a series of ridge portions 34 and valley portions 36, the harness protector including wire lead-out ports 28a to 28h serving as an inlet/outlet of the wire harness 18, wherein protrusions 42a and 42b and a stopper 46 protrude from inner circumferential surfaces 38 and 40 of the wire lead-out ports 28a to 28h, the protrusions 42a and 42b are configured to be fitted to the valley portions 36, and the stopper 46 has a larger width dimension at a protruding end face 52 or a basal portion thereof than a width dimension of the valley portions 36, and a harness assembly including the wire harness 18.