Security Lid With Extendable Contact Pads and Keyed Bolt
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Solution Overview
Problem
Existing security lids for access pipes to underground shutoff valves lack versatility in accommodating a range of internal diameters and are prone to unauthorized access due to inefficiencies in locking mechanisms, such as debris accumulation and lack of secure locking systems.
Innovation Solution
A security lid with a unique gripping and locking mechanism featuring radially extendable contact pads and a locking bolt system with a keyed bolt head, allowing secure affixation across various internal diameters and preventing unauthorized access through a design that incorporates a cylindrical housing with integrally formed stanchion, flexible skirt, and a locking bolt system resistant to debris accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional locking mechanism is used, then the lid can be secured, but it is prone to debris accumulation and unauthorized access
Solution Approach 1:
The locking bolt is extracted from traditional recessed configurations and extended through the handle and stanchion to protrude outward, eliminating dead spaces where debris could accumulate while maintaining the locking function
Solution Approach 2:
The locking mechanism combines multiple materials including metal components for strength and plastic components for corrosion resistance, creating a composite structure that resists both debris accumulation and environmental degradation
2Adaptability or versatility
If a fixed diameter lid is used, then it can secure one specific pipe size, but it cannot accommodate a range of internal diameters
Solution Approach 1:
The lid incorporates radially extendable contact pads that can dynamically adjust their position to accommodate different pipe diameters, transforming a static structure into an adaptive one that maintains grip across varying sizes
Solution Approach 2:
The lid design integrates multiple functions including gripping, locking, and sealing within a single device structure, allowing one lid model to serve multiple pipe diameter requirements through the adjustable contact pads and universal locking mechanism
3Ease of operation
If a simple locking system is used, then it is easy to operate, but it is vulnerable to unauthorized access and vandalism
Solution Approach 1:
The locking mechanism employs a nested structure where the locking bolt passes through the handle and secures to the stanchion, creating multiple interlocking components that must all be manipulated in sequence, thereby simplifying operation while enhancing security against unauthorized access
Data Source
AI summary
A locking security lid incorporates a cylindrical housing having extendable pistons and contact pads for contacting the interior surface of an access pipe, the contact pads may be retracted to a withdrawn position wherein the contact pads are within the outside diameter of the cylindrical housing. The cylindrical housing is provided with a locking bolt to will be secured to the cylindrical housing through a stanchion and having a keyed bolt head to prevent removal of the locking bolt without a socket wrench having a corresponding slot pattern. The contact pads are provided with a locking interference surface to prevent relative movement between an access pipe and the contact pad when the contact pads are extended.