Flexible Cable Protection Cover Reducing Noise and Chip Entry
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Solution Overview
Problem
Conventional cable protection and guide devices generate noise due to sliding contact and allow entry of fine chips and wear powders, which hinder smooth operation and require frequent maintenance.
Innovation Solution
A closed-type cable protection and guide device with a flexible support covered by a heat-resistant tubular cloth made of aramid fiber, secured with hose bands and Magic Tape, to prevent noise and chip entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an outer frame is used to close the connecting gap between inner frames, then chip entry is prevented, but sliding contact noise is generated
Solution Approach 1:
The patent replaces the rigid outer frame with a flexible protective cover that envelops the cable protection device. This flexible cover prevents chip entry while eliminating sliding contact noise by conforming to the movements of the inner frames without rigid contact.
2Ease of operation
If inner frames are connected with gaps to allow flexible movement, then operation flexibility is improved, but fine chips and wear powders can enter and damage the cable
Solution Approach 1:
The flexible protective cover maintains the operational flexibility of the cable protection device while completely enclosing it to prevent chip and wear powder entry. The cover moves with the device, preserving flexibility while providing continuous protection.
Solution Approach 2:
The protective cover is made from composite materials including aramid fiber and polyamide resin, combining the flexibility needed for movement with the durability required to prevent particle entry and resist wear.
3Strength
If a steel sheet or hard glass fiber reinforced polyamide resin outer frame is used, then strength and wear properties are improved, but backlash noise is generated during movement
Solution Approach 1:
The patent replaces the rigid steel sheet or glass fiber reinforced polyamide resin outer frame with a flexible protective cover made from aramid fiber and polyamide resin composite. This eliminates backlash noise while maintaining sufficient strength and wear resistance through the composite material properties.
Solution Approach 2:
The invention changes the physical parameters of the protective structure from rigid to flexible, transitioning from a rigid frame system to a flexible cover system that adapts to movement without generating backlash or sliding contact noise.
Data Source
AI summary
A closed type cable or the like protection and guide device that reduces noise generation due to the generation of sliding contact sound during operation prevents entry of fine chips and wear powders of metal into the cable or the like protection and guide device. Scattering of contact wear powders, which are generated by sliding contact between components of the cable or the like protection and guide device, into the operation space can be prevented and a maintenance of the device is reduced. A cable or the like is included in a flexible support to be protected and guided from a fixed end side mounting member toward a movable end side mounting member and the entire outer surface of the flexible support except for an inlet and an outlet of the cable or the like is covered with a heat resistant tubular cloth cover.