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Periodic permanent magnetic focusing structure and assembling components thereof

A technology of periodic permanent magnet focusing and focusing structure, which is applied in the direction of electrical components, discharge tubes, circuits, etc., can solve the problems of inconvenient installation and disassembly, difficulty in replacing magnetic steel, etc., and achieve the effect of simple assembly method and good flatness

Inactive Publication Date: 2014-05-07
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This installation and disassembly method requires professional technicians to carry out on a professional operating table, and the installation and disassembly are inconvenient; it is difficult to replace one or several pieces of magnetic steel

Method used

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  • Periodic permanent magnetic focusing structure and assembling components thereof
  • Periodic permanent magnetic focusing structure and assembling components thereof
  • Periodic permanent magnetic focusing structure and assembling components thereof

Examples

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Embodiment Construction

[0033] It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints. The directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings. Therefore, the directional terms used are for illustration and not for limiting the protection scope of the present invention.

[0034] The present invention adopts the zigzag positioning plate 22 to position the magnetic steel and the mag...

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Abstract

The invention a periodic permanent magnetic focusing structure and assembling components. The assembling components comprise a fixed baseboard, a zigzag positioning board, a plurality of set screws, and a plurality of extrusion screws. The fixed baseboard and the zigzag positioning board are provided with a plurality of holes separately. The zigzag positioning board is located on the fixed baseboard. The set screws are arranged in the holes and the zigzag positioning board is fixed on the fixed baseboard. The periodic permanent magnetic focusing structure is arranged on the fixed baseboard at the middle portion. The zigzag positioning board is provided with a zigzag slot. Two ends of the zigzag positioning board are provided with two screw holes separately. The extrusion screws pass through the screw holes in two ends of the zigzag positioning board to extrude and restrain the focusing structure in the y direction to make magnetic steels and magnetic boots in the focusing structure are in close fit, and make the zigzag positioning board 22 used to limit the positions of the magnetic steels and the magnetic boots in the x direction and maintain the degree of freedom of the magnetic steels of the magnetic boots in the y direction; a gasket is arranged between the fixed baseboard and the positioning board, and the focusing structure is pushed out by screwing the set screws successively.

Description

technical field [0001] The invention relates to the technical field of microwave vacuum electronic devices, in particular to an offset PCM focusing structure and assembly components. Background technique [0002] In microwave vacuum electronic devices, the electron beam can be stably transported only when it is confined by a focusing magnetic field. The currently used focusing methods mainly include: electromagnetic focusing, uniform permanent magnetic focusing, periodic inversion focusing and periodic permanent magnetic focusing. The structure volume and quality of the previous focusing methods are large, and the consumables are high, which is not conducive to the miniaturization of the device. The periodic permanent magnet focusing method has the advantages of small size and light weight, and has advantages in high-frequency compact microwave vacuum electronic devices. In the strip-shaped electron injection device, the periodic permanent magnet focusing method is general...

Claims

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Application Information

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IPC IPC(8): H01J23/087
Inventor 杨修东阮存军王树忠赵鼎张长青
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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