Composite Parking Meter Housing for Vandal Resistance and Low Weight
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional metal parking meter housings provide adequate protection against vandalism but are heavy, costly, and require frequent maintenance, while plastic housings are prone to UV degradation and considered inferior for security.
Innovation Solution
A parking meter housing made primarily of polycarbonate copolymer resin, reinforced with metal components and strategic design features, providing lightweight, vandal-resistant protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal housing is used for parking meter, then vandal resistance and security are improved, but weight and cost increase
Solution Approach 1:
The patent applies composite materials by combining polycarbonate plastic with embedded metal reinforcement elements (such as metal ribs, frames, or structural components). This creates a hybrid housing structure where the plastic provides lightweight base structure and corrosion resistance, while the embedded metal components provide vandal resistance and security, effectively resolving the contradiction between weight and vandal resistance.
2Reliability
If metal housing is used for parking meter, then vandal resistance is improved, but maintenance requirements increase
Solution Approach 1:
The composite housing structure combines the vandal resistance of metal with the maintenance advantages of plastic. The polycarbonate exterior provides corrosion resistance and eliminates the need for periodic painting or rust treatment, while embedded metal reinforcement maintains structural integrity against vandalism. This reduces overall maintenance frequency compared to fully metal housings.
3Weight of moving object
If plastic housing is used for parking meter, then weight and cost are reduced, but UV degradation and security are worsened
Solution Approach 1:
The patent uses composite materials to overcome the security limitations of plain plastic housings. By embedding metal reinforcement elements within the polycarbonate structure, the housing achieves vandal resistance comparable to or exceeding traditional metal housings, while maintaining the weight and cost advantages of plastic construction.
4Weight of moving object
If traditional plastic housing is used for parking meter, then weight is reduced, but durability against environmental factors is worsened
Solution Approach 1:
The composite housing structure enhances the durability of plastic against environmental factors by embedding metal reinforcement elements that provide structural stability and resistance to degradation. The polycarbonate material itself offers UV resistance and corrosion protection, while the metal reinforcement maintains structural integrity over time, extending the housing service life.
Data Source
AI summary
A parking meter may have a housing that is formed at least significantly of an impact resistant material. In particular, the impact resistant material may comprise one of a polycarbonate copolymer or polycarbonate blended resin, a nylon-based copolymer, or a nylon-based polymer that includes long glass fiber or Kevlar fiber. The housing encloses the parking meter components to provide protection for the parking meter components against an external environment and vandalism attacks.