Road Stud Composite Cap and Drainage Structure for Easy Replacement
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Solution Overview
Problem
Conventional road studs face issues such as difficulty in replacement, contamination of reflectors, inefficient noise diffusion, detachment from the road, and cumbersome installation and maintenance due to their fixed structure and material properties, leading to potential accidents and reduced functionality.
Innovation Solution
A road stud design featuring a base with a coupling part, drainage paths, and a detachable cap with a sound generation and light reflection mechanism, allowing easy installation and maintenance, efficient water drainage, and improved noise and light diffusion, while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the road stud is made of high thermal conductivity material like iron or aluminum, then the structural strength is improved, but the asphalt melts and weakens around the road stud when heated, causing the road stud to be buried and lose functionality
Solution Approach 1:
The road stud uses a composite structure combining a metal base (for strength) with a plastic cap (for thermal insulation). The plastic cap covers the metal base, preventing direct thermal contact between the high-conductivity metal and the asphalt, thus avoiding asphalt melting while maintaining structural integrity through the metal component.
2Reliability
If the road stud is fixed with bolts or screws to ensure stability, then the reliability is improved, but the manufacturing and installation become cumbersome and difficult to replace
Solution Approach 1:
The road stud is divided into separate components: a base portion and a cap portion. The base is embedded in the road surface while the cap is placed on top and secured with a simple retaining ring. This segmentation eliminates the need for complex bolted connections, simplifying manufacturing and enabling easy replacement by simply removing the retaining ring.
3Ease of operation
If the squeaker is positioned to face the ground for installation, then the ease of operation is improved, but the noise diffusion efficiency to the outside is extremely low
Solution Approach 1:
The squeaker is oriented horizontally rather than vertically facing the ground. The air passage is configured so that when the cap is pressed, air flows through the squeaker in a horizontal direction toward the outside environment. This dimensional change in air flow direction significantly improves noise diffusion efficiency while the squeaker remains accessible for installation from below.
4Reliability
If the cap is fixed to the body with bolts or screws to ensure stability, then the reliability is improved, but the ease of repair is worsened as replacement becomes very cumbersome and difficult
Solution Approach 1:
The cap attachment system uses a removable retaining ring that can be easily installed and removed, rather than permanent bolted connections. This dynamic attachment method allows the cap to be securely fixed during operation (providing reliability) while enabling quick removal and replacement when needed (improving ease of repair).
5Ease of operation
If rainwater or road washing water permeates between the body and cap, then the ease of operation is not affected, but the squeaker becomes contaminated and its operation becomes impossible
Solution Approach 1:
A waterproof seal or gasket is introduced as an intermediary element between the cap and the body. This seal prevents water from penetrating into the interior space where the squeaker is located, protecting the squeaker from contamination and maintaining its functionality, while still allowing the cap to be properly attached and operated.
Data Source
AI summary
A road stud includes a base having a drainage path and a portion that generates sound when pressed. A fixing portion is screwed into the base, and a dome shaped cap is fixed onto the base. The sound generating portion passes through a path in a light reflective portion, which is fixed onto a height surface of the base.