Mechanical Ejection Device for LED Screen Module Maintenance
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Solution Overview
Problem
Existing LED screen maintenance methods, particularly rear maintenance, are complex and require large magnets, increasing product weight and size.
Innovation Solution
A compact ejection device with a housing, rotor, drive unit, guide units, and reed switch, which allows for easy operation and module ejection without large magnets, featuring a screw-based mechanism and cushion for protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a large magnet is used to eject the module through magnetic attraction, then the module can be easily taken out, but the product weight increases
Solution Approach 1:
The patent replaces the magnetic field-based ejection system with a mechanical ejection system. A push rod with a pushing head is used to mechanically push the module out of the housing, eliminating the need for large magnets and reducing product weight while maintaining ease of operation
Solution Approach 2:
The patent extracts the magnetic component from the ejection system and replaces it with a purely mechanical pushing mechanism. The push rod and pushing head are separate from the housing, allowing for a lighter overall structure that achieves the same ejection function
2Ease of operation
If a large iron piece is installed on the module for magnetic ejection, then the module can be easily taken out, but the product size enlarges
Solution Approach 1:
The patent replaces the magnetic field-based ejection system with a mechanical ejection system. A push rod with a pushing head is used to mechanically push the module out of the housing, eliminating the need for large magnets and reducing product weight while maintaining ease of operation
Solution Approach 2:
The ejection mechanism is segmented into separate components: the push rod, pushing head, and housing. This segmentation allows for a more compact design where the ejection mechanism can be integrated into the housing structure without requiring additional space for large magnetic components
3Adaptability or versatility
If rear maintenance is implemented, then the rear cover can be accessed, but the operation process becomes complicated
Solution Approach 1:
The patent implements a universal ejection mechanism that can be accessed from the rear of the device. The push rod system allows modules to be ejected through the rear cover, providing multi-functional access (both front and rear maintenance) while using a simple mechanical mechanism that does not complicate the operation process
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
The device is conveniently operated, simple in structure, reduces product weight, and enables efficient module ejection with reduced size and weight, eliminating the need for large magnets.
Implementation Method 1
a reed switch is also included and the reed switch is electrically connected with the drive unit
Data Source
AI summary
The utility model discloses an ejection device, comprising a housing, an ejector, a rotor, a drive unit and guide units, wherein the housing is a hollow structure with an opening; the ejector is disposed in the housing; the drive unit drives the rotor to rotate; during rotating, the rotor drives the ejector to rotate along the circumference of the housing and drives the ejector to move toward the opening; guide slots are formed on the inner wall of the housing; the guide slots are disposed along the ejection direction of the ejector; and the guide units are disposed on the outer wall of the ejector and slidably disposed in the guide slots. The ejection device provided by the utility model is not only easily operated, but also simple in structure and small in size, does not require a large magnet, and can reduce the product weight.