Surface-Mount Junction Box With Tamper Board and Modular Locks

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Solution Overview

Problem

Existing junction boxes face limitations in versatility, ease of mounting, and effective protection against unauthorized access and sabotage, with prior solutions being complex, tool-dependent, or lacking comprehensive security features.

Innovation Solution

A surface-mountable junction box with a tamper board and bubble level for precise mounting, mechanical locks for module support, and a protective cover with tamper activation for unauthorized access detection, along with features like cable guides and reinforcing ribs for stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional junction box structure is used, then the box provides basic cable connection and physical protection, but it lacks effective alarm protection against unauthorized intervention and has limited versatility for module arrangement

Engineering Contradiction:
Improveprotection against unauthorized interventionVSAvoidmodule arrangement flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The junction box is divided into functional segments: a base for mounting modules, a cover for protection, and a tamper board for security monitoring. This segmentation allows each component to serve its specific function while maintaining overall system versatility and security

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The base is designed with universal mounting features including multiple opening positions for fasteners and guide elements that accommodate different module configurations. The same structure serves both as a mounting platform and as part of the tamper detection system

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If the junction box is equipped with comprehensive security features, then protection against unauthorized access is improved, but the mounting complexity and device structure become more complex

Engineering Contradiction:
Improvesecurity protectionVSAvoidmounting and structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The tamper detection functionality is merged into the existing structural components. The weak section line is integrated into the base structure, and the tamper board utilizes the same mounting openings and guide elements as the module mounting system, eliminating the need for separate security hardware

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The junction box structure itself provides the tamper detection capability through its design features. The weak section line and tamper board work together with the existing fastening mechanism to automatically detect and alarm unauthorized interventions without requiring external monitoring systems

Inventive Principle:
Principle #25Self-service

3Manufacturing precision

If positioning elements are added to ensure precise mounting, then mounting precision is improved, but the device complexity increases

Engineering Contradiction:
Improvemounting precisionVSAvoidstructure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The base is pre-equipped with positioning elements including openings for fasteners and guide elements with mechanical locks that control the mounting process. These elements are integrated into the base structure itself, providing precise positioning without requiring additional separate positioning devices during installation

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4586424B1Surface-mountable junction box
Publication Date: 2026.04.22 AJAX SYST CYPRUS HLDG LTD
  • EP4586424B1 patent drawingFigure 1
  • EP4586424B1 patent drawingFigure 2
  • EP4586424B1 patent drawingFigure 3

AI summary

A surface-mountable junction box comprises a base (1) and a protective cover (2). The base has locations for mounting at least one security system module (25) comprising a space that is delimited by guides (9) having mechanical locks (10). The base has elements for positioning the box during mounting that are through openings (11) for fastener, while protrusions (12) are arranged along their perimeter on an external part of the base (1). The box is equipped with a protective element against an unauthorized intervention that is a tamper board (4) having a ribbon cable (6) configured to be connected to one module (25) of the security system that is mounted such that it will be activated by any attempt to remove the box from a fastener, to separate it from the mounting surface, or to open the cover. This configuration allows to create the junction box having an optimized space for mounting modules of the security system, convenient mounting and reliable protection against any unauthorized intervention.