Magnetic Attraction Assembly with Shielded Cavities for Display Devices
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Solution Overview
Problem
The existing magnetic attraction structures in display devices are prone to adsorbing metal dust, such as iron chips, which affects the display effect and reliability due to assembly errors and dust accumulation, especially in heavy traffic environments.
Innovation Solution
A magnetic attraction assembly comprising a first and second magnetic shield with a magnetic member, where the shields define receiving cavities to control and shield the magnetic force, reducing the likelihood of dust adsorption by directing the magnetic force away from the display device surfaces and improving assembly precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a magnetic attraction structure is used to connect the display module and case, then the connection strength is improved, but metal dust is easily adsorbed to the surfaces, affecting display effect
Solution Approach 1:
The magnetic attraction structure is divided into separate magnetic components (first magnetic component in the case, second magnetic component in the display module) with independent magnetic shields. This segmentation allows the magnetic force to be contained within specific regions, reducing the adsorption of metal dust on the display module surface while maintaining connection strength.
Solution Approach 2:
A non-magnetic intermediate layer or protective structure is introduced between the magnetic components and the display module surface. This intermediary prevents metal dust from being directly adsorbed onto the display surface while allowing the magnetic attraction to function for connection purposes.
2Ease of operation
If magnetic attraction structure is used, then assembly is simplified, but assembly errors cause dust accumulation and affect reliability
Solution Approach 1:
The magnetic shield and magnetic components are designed with specific local geometries and material properties that concentrate the magnetic force in controlled regions. This local quality control ensures that even with assembly variations, the magnetic attraction remains effective while dust adsorption is minimized in critical areas.
Solution Approach 2:
The magnetic components and shields are pre-assembled or pre-positioned with built-in alignment features or tolerance compensation mechanisms. This preliminary action reduces the impact of assembly errors, ensuring reliable performance and minimizing dust accumulation without requiring extremely precise assembly operations.
3Force
If magnetic attraction structure is used, then connection force is improved, but dust adsorption increases affecting maintenance time
Solution Approach 1:
The harmful effect of dust adsorption is extracted or separated from the useful magnetic attraction function. The magnetic shield confines the magnetic field to specific regions, allowing strong attraction force for connection while preventing dust adsorption on the display surface, thereby reducing cleaning and maintenance time.
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 solution enhances the reliability of the display device by reducing dust adsorption, improving assembly accuracy, and facilitating maintenance, while allowing for easier disassembly and assembly, thus extending the service life and reducing maintenance time.
Implementation Method 1
a magnetic member disposed at least partially within the first receiving cavity and connected to the first magnetic shield; a second magnetic shield disposed at a side of the magnetic member away from the first connection portion, where the magnetic member is magnetically connected to the second magnetic shield
Data Source
AI summary
Provided are a magnetic attraction assembly and a display device. The magnetic attraction assembly includes first and second magnetic shields and a magnetic member magnetically connected to the second magnetic shield. The first magnetic shield includes a first body portion and a first connection portion. A first receiving cavity is disposed at a side of the first body portion. The magnetic member is disposed at least partially within the first receiving cavity and connected to the first magnetic shield. The second magnetic shield is disposed at another side of the magnetic member and includes a second connection portion and a second body portion disposed surrounding the second connection portion, the second body portion and the second connection portion define a second receiving cavity with an opening facing the first magnetic shield, the first body portion and the magnetic member are disposed at least partially within the second receiving cavity.