Tool-Free LED Display Box Connecting Structure

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Solution Overview

Problem

The complexity of mounting and dismounting boxes in traditional LED display screens due to the need for tools like wrenches, resulting in low assembly efficiency.

Innovation Solution

A connecting structure comprising a first pressing plate, a second pressing plate, a connecting column, and a lifting mechanism, where the second pressing plate moves relative to the first pressing plate using a handle and spiral lifting groove, allowing for tool-free locking and unlocking of adjacent boxes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a threaded structure is used to connect boxes, then the connection is reliable, but the mounting and dismounting process becomes complicated and requires tools

Engineering Contradiction:
Improveconnection reliabilityVSAvoidmounting and dismounting ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the traditional threaded mechanical connection system with a lifting mechanism that uses vertical movement and elastic locking. The connecting column moves vertically within the mounting hole, and the lock sheet with elastic member automatically locks when the column reaches the bottom, eliminating the need for threading operations and tools.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The elastic member (lock sheet) automatically engages with the mounting hole structure to lock the connecting column in place without requiring additional fastening operations. The system self-locks through the elastic deformation and recovery of the lock sheet, making the connection process self-servicing and tool-free.

Inventive Principle:
Principle #25Self-service

2Reliability

If a threaded structure is used to connect boxes, then the connection is secure, but assembly efficiency decreases due to complicated steps

Engineering Contradiction:
Improveconnection securityVSAvoidassembly efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent replaces the multi-step threaded fastening system with a single vertical insertion motion followed by automatic elastic locking. The connecting column is simply inserted into the mounting hole, and the lock sheet automatically secures it, reducing assembly operations to a single intuitive motion that significantly improves productivity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts the complex threading operation from the connection process, leaving only the essential vertical insertion motion. The locking function is separated and automated through the elastic member, which automatically engages without requiring the operator to perform additional fastening steps.

Inventive Principle:
Principle #2Taking out (Extraction)

3Stability of the object's composition

If a traditional locking mechanism is used, then the connection is stable, but the device complexity increases due to additional components

Engineering Contradiction:
Improveconnection stabilityVSAvoidstructure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent merges the locking function directly into the connecting column and mounting hole structure. The lock sheet is integrated as part of the column assembly, and the elastic member is positioned within the mounting hole itself, eliminating the need for separate locking components and reducing overall structural complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The connecting column serves multiple functions: it provides the structural connection, guides the locking action, and works with the elastic member to achieve stable locking. The mounting hole similarly serves as both the insertion path and the locking engagement structure, reducing the need for additional specialized components.

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

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

Simplifies the process of mounting and dismounting boxes in LED display screens by enabling tool-free operation, enhancing assembly efficiency and reducing the complexity of the splicing process.

Implementation Method 1

a spiral lifting groove extending in a circumferential direction of the sleeve is provided on a side wall of the sleeve

Methodology Applied
Scientific EffectScrew mechanism: Screw

Implementation Method 2

the LED device comprises a connecting lock and a housing, the connecting lock comprises a lock and a locking seat

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP3196486B1Connecting structure and LED display device having the same
Publication Date: 2019.10.30 SHENZHEN LEYARD OPTO ELECTRONICS
  • EP3196486B1 patent drawingFigure 1
  • EP3196486B1 patent drawingFigure 2~3
  • EP3196486B1 patent drawingFigure 4

AI summary

The invention provides a connecting structure and a Light-Emitting Diode (LED) display device having the same. The connecting structure comprises: a first pressing plate (10), the first pressing plate (10) including a plate body (11) and a lock sheet (12) provided on the plate body (11) slidably, a first mounting hole (111) is provided on the plate body (11); a second pressing plate (20), a second mounting hole (21) is provided on the second pressing plate (20); a connecting column (30), penetrating through the first mounting hole (111) and the second mounting hole (21) respectively, a lock groove (31) matched with the lock sheet (12) is provided on a first end of the connecting column (30), a force application part (40) located below the second pressing plate (20) is provided on a second end of the connecting column (30); a lifting mechanism, connected to the second pressing plate (20), the second pressing plate (20) may move towards or away from the first pressing plate (10) under an action of the lifting mechanism by operating the force application part (40). The technical solution of the invention solves the problem in the traditional art that it is complicated to splice boxes of an LED display screen.