Coaxial Electron Beam Source Layout to Prevent Axial Deviation
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Solution Overview
Problem
In fluorescent display tubes, the electron discharge part and tension holding part are often aligned parallel to each other, making it difficult to apply a pressing force along the axis of the electron discharge part, leading to axial deviation.
Innovation Solution
An electron beam generation source is designed with the electron discharge part, a movable part, and a tension holding part aligned on the same axis, allowing for easy application of pressing or tensile force to the electron discharge part through the movable part, thereby curbing axial deviation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the electron discharge part and tension holding part are disposed parallel to each other with connecting parts, then the structure is simple and easy to manufacture, but the pressing force cannot be applied along the axis of the electron discharge part, causing axial deviation
Solution Approach 1:
The patent transitions from a parallel arrangement (2D planar configuration) to a coaxial arrangement (1D linear configuration along the axis). By placing the tension holding part, movable part, and electron discharge part along the same axis, the force application direction aligns with the electron discharge part's axis, eliminating axial deviation while maintaining structural simplicity
Solution Approach 2:
The movable part serves as an intermediary between the tension holding part and the electron discharge part. It transmits the pressing force from the tension holding part directly along the axis to the electron discharge part, ensuring proper force application direction while allowing for thermal expansion and contraction
2Device complexity
If the tension holding part applies pressing force through a parallel configuration, then the structure is straightforward, but axial deviation of the electron discharge part occurs due to moment action
Solution Approach 1:
The patent changes the spatial arrangement from a parallel 2D configuration to a coaxial 1D configuration. This dimensional change ensures that the pressing force acts directly along the axis of the electron discharge part, eliminating the creation of moments that would cause axial deviation, while the overall device complexity remains low
Solution Approach 2:
The patent employs asymmetric positioning where the movable part and tension holding part are specifically positioned on one side of the electron discharge part along the axis, rather than symmetric parallel positioning. This asymmetric arrangement allows direct axial force application without creating rotational moments, improving axial stability
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 ensures stable application of force to the electron discharge part, preventing axial deviation and ensuring uniform electron emission.
Implementation Method 1
a tension holding part configured to hold tension of the electron discharge part by applying a pressing force or a tensile force to the movable part
Implementation Method 2
an electron discharge part extending on a desired axis and configured to discharge electrons
Data Source
AI summary
Disclosed is an electron beam generation source including: an electron discharge part extending on a desired axis and configured to discharge electrons; a movable part connected to one end of the electron discharge part; a support part configured to support the movable part to be movable along the axis; and a tension holding part configured to hold tension of the electron discharge part by applying a pressing force or a tensile force to the movable part. The movable part and the tension holding part are disposed on the axis.