JPH0424814B2 - - Google Patents
Info
- Publication number
- JPH0424814B2 JPH0424814B2 JP9485982A JP9485982A JPH0424814B2 JP H0424814 B2 JPH0424814 B2 JP H0424814B2 JP 9485982 A JP9485982 A JP 9485982A JP 9485982 A JP9485982 A JP 9485982A JP H0424814 B2 JPH0424814 B2 JP H0424814B2
- Authority
- JP
- Japan
- Prior art keywords
- center
- lead
- center lead
- sleeve
- leads
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000919 ceramic Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/15—Cathodes heated directly by an electric current
Landscapes
- Microwave Tubes (AREA)
- Solid Thermionic Cathode (AREA)
Description
【発明の詳細な説明】
本発明は電子管陰極構体、特にマグネトロンの
陰極構体の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in electron tube cathode assemblies, particularly magnetron cathode assemblies.
従来のマグネトロンの陰極構造は、一般に第１
図に示すような構造よりなる。すなわち、マグネ
トロンの管軸中心に配設された熱電子を放出する
フイラメント１は、熱電子の軸方向への逸脱を防
止する上エンドシールド２および下エンドシール
ド３に挾持されている。上エンドシールド２およ
び下エンドシールド３にはそれぞれセンターリー
ド４およびサイドリード５が固着されている。こ
れらセンターリード４およびサイドリード５には
特に加振時の耐共振強度補強のためにセラミツク
などからなるスペーサ６が取付けられ、このスペ
ーサ６の位置ずれ防止のために一方のサイドリー
ド５にスリーブ７が溶接固定されている。またセ
ンターリード４およびサイドリード５の端部には
端子８がステムセラミツク９とともに銀銅ろう付
けされ、更にステムセラミツク９にはシール部品
10が同様に銀銅ろう付けされている。 The cathode structure of a conventional magnetron generally has a first
It consists of the structure shown in the figure. That is, a filament 1 disposed at the center of the tube axis of the magnetron and emitting thermoelectrons is sandwiched between an upper end shield 2 and a lower end shield 3 that prevent the thermoelectrons from deviating in the axial direction. A center lead 4 and a side lead 5 are fixed to the upper end shield 2 and the lower end shield 3, respectively. A spacer 6 made of ceramic or the like is attached to the center lead 4 and the side leads 5 in order to strengthen their anti-resonance strength especially during vibration, and a sleeve 7 is attached to one side lead 5 to prevent the spacer 6 from shifting. is fixed by welding. Furthermore, a terminal 8 is soldered with silver copper to the end of the center lead 4 and side lead 5 together with a stem ceramic 9, and a sealing part is attached to the stem ceramic 9.
10 are similarly soldered with silver and copper.
このような構成よりなる陰極構体においては、
フイラメント１は動作電流によつてその中央部が
ほぼ1900℃にも昇温する。これによりフイラメン
ト１の近傍の上エンドシールド２、下エンドシー
ルド３、センターリード４、サイドリード５は約
1000℃以上に加熱されるので、モリブデンやタン
グステンなどの高価な高融点金属を用いなければ
ならない。特にセンターリード４、サイドリード
５は軸方向に相当な長さを有するので、コスト高
になる欠点を有する。そこで、センターリード４
およびサイドリード５の径を細くすれば、それな
りに所要量の節減を図れるが、その剛性は直角方
向の力に対して径寸法の４乗に比例して減少する
ので、リードとしての剛性が低くなり、自ずと限
度がある。またスペーサ６はリード４，５に対し
て貫通されているだけなので（ろう付けなどで固
着すれば良いが、原価高になる。）、紙面に垂直な
方向の振動には防止効果が少ない。 In the cathode structure having such a configuration,
The temperature of the filament 1 at its center rises to approximately 1900° C. due to the operating current. As a result, the upper end shield 2, lower end shield 3, center lead 4, and side lead 5 near the filament 1 are approximately
Since it is heated to over 1000°C, expensive high-melting point metals such as molybdenum and tungsten must be used. In particular, the center lead 4 and the side leads 5 have a considerable length in the axial direction, so they have the disadvantage of increasing costs. Therefore, center lead 4
If the diameter of the side lead 5 is made thinner, the required amount can be reduced to some extent, but its rigidity decreases in proportion to the fourth power of the diameter dimension against the force in the right direction, so the rigidity of the lead is low. Naturally, there are limits. Further, since the spacer 6 only penetrates through the leads 4 and 5 (it may be fixed by brazing or the like, but this increases the cost), it has little effect in preventing vibrations in the direction perpendicular to the plane of the paper.
本発明の目的は剛性を低下させることなく原価
低減が図れる電子管陰極構体を提供することにあ
る。 SUMMARY OF THE INVENTION An object of the present invention is to provide an electron tube cathode structure that can be manufactured at reduced cost without reducing rigidity.
以下、本発明の一実施例を第２図により説明す
る。なお、第１図と同じまたは相当部材には同一
符部号を付しその説明を省略する。図に示すよう
に、センターリード４にはパイプ状のスリーブ１
１がはめこまれ、その外径はステムセラミツク９
の貫通孔にほぼ密に嵌入される。従つて、センタ
ーリード４が実質的に径を太くしたのと同じ効果
を奏することができる。 An embodiment of the present invention will be described below with reference to FIG. Note that the same or equivalent members as in FIG. 1 are given the same reference numerals and their explanations will be omitted. As shown in the figure, a pipe-shaped sleeve 1 is attached to the center lead 4.
1 is fitted, and its outer diameter is stem ceramic 9.
It is fitted almost tightly into the through hole. Therefore, the same effect as when the diameter of the center lead 4 is substantially increased can be achieved.
そして、スリーブ１１は、第３図ａに示すよう
にセンターリード４を嵌入する軸方向にスリツト
１１ａを有するパイプ状のものを用い、センター
リード４にはめ込みステムセラミツク９の貫通孔
に嵌入する。これは、このスリツト１１ａによつ
て生ずるバネ性を利用してスリーブ１１をステム
セラミツク９に嵌入する部分において密にはめ込
むようにするためである。この場合スリーブ１１
の外径は、上述の嵌入部分においてステムセラミ
ツク９の貫通孔よりも若干大きく設定することは
云うまでもないが、さらにスリーブ１１の内径も
２段にしておけば、センターリード４に対して
も、スリーブ１１はセンターリード４に密着する
ことができ、一層ステムセラミツク９、スリーブ
１１、センターリード４が一体感を増すことにな
る。 The sleeve 11 is a pipe-shaped member having a slit 11a in the axial direction into which the center lead 4 is inserted, as shown in FIG. This is to ensure that the sleeve 11 is tightly fitted into the stem ceramic 9 by utilizing the springiness produced by the slit 11a. In this case sleeve 11
It goes without saying that the outer diameter of the sleeve 11 is set to be slightly larger than the through hole of the stem ceramic 9 at the above-mentioned insertion part, but if the inner diameter of the sleeve 11 is also set to two stages, , the sleeve 11 can be brought into close contact with the center lead 4, and the stem ceramic 9, the sleeve 11, and the center lead 4 can further enhance the sense of unity.
本発明によれば、フイラメント破断強度を支配
するリードの補強を簡単な構造で得られ、部品点
数の削減、高価なリード材料の節約など、高信頼
性を有し、かつ経済的な電子管陰極構体をもたら
す効果がある。 According to the present invention, reinforcement of the lead, which controls the filament breaking strength, can be obtained with a simple structure, and the electron tube cathode structure is highly reliable and economical by reducing the number of parts and saving expensive lead materials. It has the effect of bringing about
第１図は従来のマグネトロンの陰極構体の断面
図、第２図は本発明になる陰極構体の断面図、第
３図は本発明のスリーブ形状の実施例を示し、ａ
は斜視図、ｂはａのＡ−Ａ線断面図である。
１……フイラメント、２……上エンドシール
ド、３……下エンドシールド、４……センターリ
ード、５……サイドリード、９……ステムセラミ
ツク、１１……スリーブ。
FIG. 1 is a sectional view of a conventional magnetron cathode structure, FIG. 2 is a sectional view of a cathode structure according to the present invention, and FIG. 3 is a sleeve-shaped embodiment of the present invention.
is a perspective view, and b is a sectional view taken along line A-A of a. 1...Filament, 2...Upper end shield, 3...Lower end shield, 4...Center lead, 5...Side lead, 9...Stem ceramic, 11...Sleeve.
Claims (1)
ラメントの上下を挾持する上、下エンドシールド
と、これら上下エンドシールドにつながるセンタ
ーリードおよびサイドリードと、これらセンター
リードおよびサイドリードが貫通装着されるステ
ムセラミツクよりなる電子管陰極構体において、
前記センターリードの前記ステムセラミツクとの
底部接合部分から前記下エンドシールドの近傍に
到る前記センターリードの部分に、前記センター
リードを嵌入し得る軸方向にスリツトを有するパ
イプ状スリーブを配設し、かつ前記スリーブのス
リツトを介して前記センターリードを前記ステム
セラミツクのセンターリード貫通孔に嵌入せしめ
る如く構成したことを特徴とする電子管陰極構
体。1. From a filament that emits thermoelectrons, upper and lower end shields that sandwich the upper and lower ends of this filament, center leads and side leads that connect to these upper and lower end shields, and a stem ceramic through which these center leads and side leads are installed. In the electron tube cathode structure,
disposing a pipe-shaped sleeve having a slit in the axial direction into which the center lead can be fitted, in a portion of the center lead extending from the bottom joint portion of the center lead with the stem ceramic to the vicinity of the lower end shield; An electron tube cathode assembly characterized in that the center lead is fitted into the center lead through hole of the stem ceramic through the slit of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57094859A JPS58214243A (en) | 1982-06-04 | 1982-06-04 | Electron tube cathode structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57094859A JPS58214243A (en) | 1982-06-04 | 1982-06-04 | Electron tube cathode structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58214243A JPS58214243A (en) | 1983-12-13 |
| JPH0424814B2 true JPH0424814B2 (en) | 1992-04-28 |
Family
ID=14121753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57094859A Granted JPS58214243A (en) | 1982-06-04 | 1982-06-04 | Electron tube cathode structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58214243A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56127659U (en) * | 1980-02-28 | 1981-09-29 |
-
1982
- 1982-06-04 JP JP57094859A patent/JPS58214243A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58214243A (en) | 1983-12-13 |
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