JPS6113454U

JPS6113454U - Rotating anode X-ray tube

Info

Publication number: JPS6113454U
Application number: JP9789684U
Authority: JP
Inventors: 勝弘小野; 立也佐久間
Original assignee: 株式会社東芝
Priority date: 1984-06-29
Filing date: 1984-06-29
Publication date: 1986-01-25

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】第１図及び第２図はこの考案の一実施例に係る回転陽極
型のＸ線管を示す断面図と平面図、第３図はこの考案の
変形例を示す断面図、第４図及び第５図は第３図の変形
例における動作時の要部を示す断面−、第６図は従来の
Ｘ線管を示す概略断面図、第７図は電子ビーム直径と距
離ｄ（フィラメントと集束電極との距離）との関係を示
す特性曲線図、第８図は電子ビーム直径と陽極ターゲッ
トー陰極間距離との関係を示す特性曲線図である。１・・・真空外囲器、２・・・集束電極、３・・・陽極
ターゲット、５・・・陰極支持体、６・・・フィラメン
ト、７・・・ベローズ、８・・・スプリング、９・・・
ボルト、１０・・・ナット、１３・・・ボルト、１４・
・・ナット、１５・・・− フィラメント支持板、↓見
・・・陰極構体、１７・・・固定支持板、１８・・＝可
動支持板、１９・・・ベローズ、２０・・・スプリング
。[Brief Description of the Drawings] Figures 1 and 2 are a cross-sectional view and a plan view of a rotating anode type X-ray tube according to an embodiment of this invention, and Figure 3 is a cross-sectional view showing a modification of this invention. Figures 4 and 5 are cross-sections showing the main parts of a modified example of Figure 3 during operation, Figure 6 is a schematic cross-sectional view showing a conventional X-ray tube, and Figure 7 is a diagram showing the electron beam diameter. FIG. 8 is a characteristic curve diagram showing the relationship between the distance d (distance between the filament and the focusing electrode), and FIG. 8 is a characteristic curve diagram showing the relationship between the electron beam diameter and the anode target-cathode distance. DESCRIPTION OF SYMBOLS 1... Vacuum envelope, 2... Focusing electrode, 3... Anode target, 5... Cathode support, 6... Filament, 7... Bellows, 8... Spring, 9 ...
Bolt, 10... Nut, 13... Bolt, 14.
...Nut, 15...-Filament support plate, ↓See...Cathode structure, 17...Fixed support plate, 18...=Movable support plate, 19...Bellows, 20...Spring.

Claims

[Scope of utility model registration request]

(1) A cathode assembly having a filament placed in a focusing groove provided eccentrically from the tube axis of a cup-shaped focusing electrode on one side of the vacuum envelope, and a rotating anode target provided on the other side. In the rotary anode type X-ray tube, the above-mentioned implicit structure includes a fixed support plate hermetically sealed integrally with the vacuum envelope, and a movable support plate hermetically sealed to the fixed support plate via a vacuum bellows. A rotary anode type Line 1 tube.

(2) The rotating anode X-ray tube according to claim 1, wherein the relative position of the filament with respect to the focusing electrode is variable.