Hinged Locking Clamp for Gate and Fence Post Security

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Solution Overview

Problem

Conventional methods for securing gates or fences, such as link chains and padlocks, are vulnerable to mechanical force and can be easily broken or forced open, lacking sufficient resistance to violence.

Innovation Solution

A locking clip with hinged brackets and perpendicular tabs that surround the area to be secured, featuring a one-piece construction and angled end sections to prevent access and manipulation, providing enhanced resistance to mechanical force and unauthorized access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If link chains and padlocks are used to secure gates, then the securing method is simple and easy to implement, but the resistance to mechanical violence is insufficient and can be easily broken

Engineering Contradiction:
Improveease of implementationVSAvoidresistance to mechanical violence
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The locking device is divided into two separate brackets that can be independently positioned around the gate and post, then joined together through a hasp and padlock mechanism. This segmentation allows each bracket to bear mechanical loads independently while maintaining ease of installation and removal.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The locking device combines hardened steel brackets with high mechanical strength and resistance to cutting/prying, paired with a padlock for security. This composite approach integrates the cutting resistance of hardened steel with the locking function of the padlock, creating a system that resists both mechanical violence and unauthorized opening.

Inventive Principle:
Principle #40Composite materials

2Ease of operation

If metal sheets are oriented to be easily accessible from the outside, then the locking device is easy to manipulate and assemble, but the weld seams become vulnerable to mechanical force and can break or tear

Engineering Contradiction:
Improveease of manipulationVSAvoidweld seam integrity
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The hasp is extracted as a separate component that connects the two brackets, eliminating the need for weld seams in the load-bearing path. The hasp can be easily attached and removed, providing ease of manipulation while the brackets themselves maintain structural integrity through their hardened steel construction and geometry.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of making the metal sheets accessible for manipulation, the design inverts the approach by having the brackets enclose the gate and post, with the hasp and padlock providing the accessible interface for locking and unlocking. This protects the structural components from direct mechanical attack while maintaining ease of operation through the padlock mechanism.

Inventive Principle:
Principle #13The other way round (Inversion)

3Strength

If the tabs are positioned close together in the closed position, then resistance to mechanical attack through the gap is improved, but access to the padlock hasp becomes difficult

Engineering Contradiction:
Improveresistance to mechanical attackVSAvoidaccess to padlock hasp
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The brackets are made of hardened steel with high cutting resistance and structural strength at critical locations where mechanical attack is most likely to occur. This localized hardening provides enhanced protection at the tabs and bracket edges while maintaining overall ease of operation through the padlock mechanism.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP3351712B1Locking clamp for securing a gate to a fence post
Publication Date: 2020.05.27 ABUS AUGUST BREMICKER SOEHNE KG
  • EP3351712B1 patent drawingFigure 1

AI summary

The present invention relates to a locking clamp for securing two adjacent bodies to one another, in particular for securing a gate to a fence post. The locking clamp comprises a first bracket and a second bracket, which together with the first bracket encloses an area for receiving the two adjacent bodies. The brackets each have a first end and a second end, being pivotally connected to one another at their first ends, so that the brackets are pivotable between an open position, in which the locking clamp can be arranged around the two adjacent bodies, and a closed position, in which the brackets together enclose the area for receiving the two adjacent bodies. Each of the brackets forms a tab at its free end, which is oriented substantially perpendicular to the second end and which has at least one bore.In the closed position, the tabs of the shackle lie parallel to each other, so that a locking shackle of a padlock can be inserted into the holes of the tabs to secure the shackles to each other.