Line Fixation Device with Flexible Extensions and Vibration Damping
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Solution Overview
Problem
Existing fastening devices for lines in vehicles face challenges in providing sufficient holding force across varying temperature ranges while being inexpensive and safe from injury, with limited adjustability to different line diameters and potential sharp edges.
Innovation Solution
A fastening device featuring a metal or plastic reinforcement part embedded in a soft plastic layer, with sickle-like extensions that adapt to different line diameters and a vibration-damping plastic layer covering sharp edges, ensuring secure grip and minimizing injury risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a reinforcement part with simple ribs is used, then the device is inexpensive and easy to manufacture, but the adaptability to different line diameters is insufficient
Solution Approach 1:
The reinforcement part features flexible extensions that can dynamically adapt their shape to accommodate different line diameters. These extensions bend and conform to the specific diameter of the line being fastened, providing a universal solution that works across multiple sizes without requiring different rib configurations.
Solution Approach 2:
The extensions are designed to change their geometric parameters (bending angle, contact point position) based on the line diameter. This allows the same reinforcement part structure to maintain effective contact and gripping force across varying line sizes by automatically adjusting its configuration.
2Strength
If a metal reinforcement part is used, then the holding force in higher temperature ranges is sufficient, but sharp edges may cause injury to fitters
Solution Approach 1:
The fastening device combines a metal reinforcement part (for high-temperature strength and holding force) with a plastic layer (for safety and vibration damping). This composite structure allows each material to contribute its advantageous properties: the metal provides thermal resistance and gripping force, while the plastic provides safety coverage and vibration isolation.
Solution Approach 2:
The plastic layer acts as an intermediary between the metal reinforcement part and the external environment. It covers the sharp edges of the metal to eliminate injury risk, while still allowing the metal to perform its primary function of providing holding force in high-temperature conditions.
3Force
If a hard reinforcement part is used, then the gripping force is strong, but the vibration damping performance is insufficient
Solution Approach 1:
The device uses a composite structure where a hard reinforcement part (metal or hard plastic) provides strong gripping force, while a softer plastic layer surrounds it to provide vibration damping. This combination allows the hard component to maintain gripping strength while the soft component absorbs and dampens vibrations, preventing them from being transmitted to the fastened line.
Solution Approach 2:
The softer plastic layer serves as a vibration-damping intermediary between the hard reinforcement part and the line. It isolates the line from vibrations generated by the vehicle body, while the hard reinforcement part continues to provide the necessary gripping force to secure the line.
4Object-affected harmful factors
If the plastic layer completely surrounds the reinforcement part, then safety is improved, but the device complexity increases
Solution Approach 1:
The plastic layer is designed as a flexible, thin-walled structure that completely surrounds the reinforcement part. This shell-like construction provides comprehensive safety coverage by covering all sharp edges, while the thin-wall design minimizes the added complexity and material usage. The flexibility of the plastic layer allows it to conform to the reinforcement part geometry without requiring complex molding.
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 a cost-effective, secure, and vibration-damped fastening system that maintains holding force across temperature ranges and accommodates various line diameters without sharp edges, ensuring reliable and safe installation.
Implementation Method 1
Sharp edges of the reinforcement part, which is made of metal for example, are covered by the plastic layer, so that the risk of injury to a fitter is minimized
Implementation Method 2
the lines completely surrounded by the plastic layer are decoupled from the vibrations of the vehicle body, i.e. the plastic layer surrounding the reinforcement part acts as a vibration damper
Implementation Method 3
the C-shaped section grips the pipe with a constant holding force
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The device has a reinforcing part (12) and a plastic film (14) partially surrounding the reinforcing part upto a fastening section. The reinforcing part is either made of metal or plastic. The reinforcing part includes a C-shaped section that spatially surrounds a cable. A gap is provided for inserting the cable. A peripheral wall (32) surrounding the cable includes flexible projections that are stretching inward.