Modular Distribution Box Screwless Stacking Mechanism
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Solution Overview
Problem
The complexity and time-consuming nature of assembling and maintaining modular distribution boxes for fiber-to-the-antenna (FTTA) networks due to the use of screws for module connections, which hinders quick installation and maintenance.
Innovation Solution
A modular distribution box design featuring attachment members with seats and protrusions on each module for easy longitudinal stacking, along with a retaining element that urges modules together, eliminating the need for screws and ensuring stability and secure locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws are used to connect modules, then the distribution box achieves structural stability, but the assembly and maintenance time increases significantly
Solution Approach 1:
The patent removes screws entirely from the module connection system, extracting the time-consuming fastening operation while replacing it with a snap-fit attachment mechanism using protrusions and recesses that provide quick connection without requiring threaded fasteners
Solution Approach 2:
The patent replaces the screw-thread mechanical system with a elastic deformation-based locking system where protrusions deform elastically to engage with recesses, providing secure mechanical connection through material elasticity rather than threaded engagement
2Reliability
If screws are used to connect modules, then the connection is secure, but the complexity of the distribution box increases
Solution Approach 1:
The patent merges the attachment function into the module housing structure itself, integrating protrusions and recesses directly into the module casings rather than using separate screw fasteners, thereby reducing component count and overall system complexity
Solution Approach 2:
The patent creates universal attachment features (protrusions and recesses) that can be applied to all module connections throughout the distribution box, providing a standardized connection mechanism that simplifies design and reduces the variety of fastening components needed
3Productivity
If modules are stacked without retaining elements, then the assembly is quick, but the structural stability and sealing integrity are compromised
Solution Approach 1:
The retaining elements are designed to be automatically engaged during the stacking process, where the act of placing one module on top of another automatically compresses the retaining elements and secures the connection without requiring separate fastening operations
Solution Approach 2:
The patent uses elastic deformation of the retaining elements as a temporary state during assembly, where the elements are compressed during stacking and then recover to provide continuous securing force, maintaining stability through dynamic parameter change rather than static fastening
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates rapid and secure assembly of modules without screws, enhancing installation efficiency and maintenance accessibility while maintaining structural stability and sealing integrity.
Implementation Method 1
each protrusion is elastically deformable along a direction transversal to the longitudinal direction for locking and/or unlocking inside a respective seat
Implementation Method 2
a retaining element is provided and configured to act on the base module and the cap module to mutually urge the stacked modules along the longitudinal direction
Data Source
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AI summary
A distribution box (1) for cables (2), the distribution box comprising a plurality of modules (10) arranged in a stacked relationship along a longitudinal direction (X-X), the plurality of modules (10) comprising: a base module (20) having an inlet port (21) for receiving one or more cables (2), a cap module (30), one or more distribution modules (40) arranged between the base module (20) and the cap module (30), each distribution module (40) having one or more outlet ports (41). Attachment members (60) are formed on each module (10) for attaching longitudinally the stacked modules (10), a retaining element (80) is provided and configured to act on the base module (20) and the cap module (30) to mutually urge the stacked modules (10) along the longitudinal direction (X-X).