Seamless Metal Enclosure for Electromagnetic Noise Shielding
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Solution Overview
Problem
Conventional effective component generation devices suffer from electromagnetic noise leakage due to gaps at the joints of the bent metal sheet case, which inadequately reduces electromagnetic noise influence outside the case.
Innovation Solution
The device features a case with a seamless metal body formed by drawing a metal sheet, which surrounds the internal components and includes a discharge port, reducing electromagnetic noise leakage by eliminating gaps at the corner portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the case is formed by bending a metal sheet to house internal components, then the case can be manufactured with simple structure, but gaps are generated at joints causing electromagnetic noise leakage
Solution Approach 1:
The case is divided into a first case portion and a second case portion that are separately formed and then joined together. This segmentation allows each portion to be manufactured independently with simpler processes while the joining structure is designed to minimize gaps and electromagnetic noise leakage at the interface.
Solution Approach 2:
A joining structure acts as an intermediary element between the first and second case portions. This joining structure is specifically designed to bridge the two portions while minimizing gap formation, thereby reducing electromagnetic noise leakage without compromising the overall simplicity of case manufacturing.
2Ease of manufacture
If the case is formed by bending a metal sheet, then manufacturing process is simple, but electromagnetic noise influence outside the case cannot be sufficiently reduced
Solution Approach 1:
The case is segmented into multiple portions with a specifically designed joining structure that minimizes electromagnetic noise leakage. The segmentation allows for simpler manufacturing of individual portions while the joining structure addresses the electromagnetic noise issue at the interface between portions.
Solution Approach 2:
The joining structure serves as an intermediary element that connects case portions while minimizing electromagnetic noise leakage. It acts as a mediator between the simple manufacturing requirement and the electromagnetic noise reduction requirement.
3Ease of manufacture
If gaps are present at joints of the metal sheet case, then the case structure is simpler to manufacture, but electromagnetic noise leaks from the gaps
Solution Approach 1:
The case is divided into separate portions that are joined together using a specifically designed joining structure. This segmentation approach maintains manufacturing simplicity while the joining structure is configured to minimize gap formation and electromagnetic noise leakage at the joints.
Solution Approach 2:
The joining structure acts as an intermediary element between case portions, designed to minimize gap formation at joints. It mediates between the need for simple case construction and the requirement to prevent electromagnetic noise leakage through proper interface design.
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
This configuration effectively reduces electromagnetic noise emission to the outside, minimizing its influence on external electrical equipment and enhancing electromagnetic compatibility.
Implementation Method 1
an electrostatic atomization generator including a discharger (discharge electrode), a drive circuit (high voltage application unit)
Implementation Method 2
The case has a metal body including a bottom plate and a peripheral wall surrounding at least the discharger among the internal components
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
Effective component generation device (1) includes internal component (2) and case (3). Internal components (2) include discharger (21) that generates an effective component. Case (3) is formed in a box shape having discharge port (31) through which an effective component is discharged, and houses internal components (2). Case (3) includes metal body (30) including a bottom plate and peripheral walls (36) surrounding at least discharger (21) in internal component (2). Metal body (30) has seamless portion (301) at a corner portion between two surfaces of adjacent peripheral walls (36) oriented in different directions. As a result, there is provided effective component generation device (1) capable of suppressing electromagnetic noise radiated to the outside of case (3) and reducing an influence of electromagnetic noise to the outside.