403929 A7 __B7_ 五、發明説明纟) (發明所屬之技術領域） 本發明有關於，具有，螺旋狀之直熱形陰極燈絲，至 少一個之籠型控制柵電極及筒狀之陽極之多極電子管。 (先前技術） 多極電子管之一種之例如送訊管乃，具有放出熱電子 之陰極，用於捕捉由該陰極所放出之熱電子之筒狀陽極， 及配置在這些陰極與陽極之間之用於控制熱電子之通過量 之至少一個控制柵電極。而陰極乃一般使用由钍-鎢所成 之金屬線螺旋狀地捲繞而成之直熱形燈絲。又，控制柵電 極乃一般使用縱方向的（即與管軸平行方向地）排列多數 之鉬組線，而熔接於梱著該縱線狀的捲繞於成之橫支持線 之籠形柵極。 這種多極電子管有日本專利公報實公昭3 8 -2768，實公昭41 — 16896號所揭示之構造乃屬 眾所周知。 前者之公報所揭示之構造乃，如圖3 (a) (b)( 經濟部中央標準局員工消費合作社印製 c )所示，備有固定支撐於管軸上之陰極支柱1 1 1之螺 旋狀捲繞之直熱形陰極燈絲1 1 2。並且在此陰極燈絲 1 1 2之周圍，同軸狀地配置有控制柵電極1 1 3。柵電 極1 13乃具有，由鎢組線所成之多數縱線1 14，以及 梱繞該縱線地粗螺旋狀地捲繞之橫支持線1 1 5，橫支持 線1 1 5乃比較縱線1 1 4粗徑之金屬線，而與縱線在其 交點上施予熔接，由而具有機械的安定地支撐縱線，且防 -4- (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 經濟部中央標準局員工消費合作社印製 A7 __403929_B7____ 五、發明説明έ ) 止變形之機能。並且以包圍這些燈絲及柵電極，並兼真空 容器之一部份地配置有圓筒狀陽極1 1 6。 另一方面上述之後者，即揭示於實公昭4 1 -1 6 8 9 6號公報之構造係，如圖4所示，有數支之橫支 持線1 1 5係對於管軸成垂直方向地捲繞而成。此構造時 ，須準備彎曲成規定直徑之橫支持線1 1 5，而隔著規定 之間隔地嵌合於縱線之外周然後熔接各交點，因此有製造 會煩雜化之問題。 相對地上述前者之構造時，將1支或2支程度之橫支 持線1 1 5連續地捲繞於縱線之外周而熔接各交點即可， 因此比較能簡化製造。惟以往乃如3所示，陰極燈絲 1 1 2之螺旋狀捲繞方向與柵電極之橫支持線之螺旋狀捲 繞方向爲相同方向，且陰極燈絲1 1 2之螺旋狀捲繞線節 距間隔（P f )與柵電極之橫支持線之螺旋狀捲繞線節距 間隔（P s )爲同等或大致同等狀。 (發明所欲解決之問題） 依上述之以往之構造時，即如圖5及圖6所示，由陰 極燈絲112之螺旋狀捲繞線與栅電極之橫支持線之螺旋 狀捲繞線之槪略對應於熱電子流之進行方向之真橫方向所 視之疊合之程度，而動作特性，特別是電壓放大率（// ) 乃如虛線（R)所示會有大幅度地改變。 詳述之圖5之（5 a )乃模式的表示由正橫方向即對 於管軸成垂直方向觀視陰極燈絲1 1 2之螺旋狀捲繞線與 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） n 1 —- » - - 1'·1— - - I^- - -- — - - - I X- --- (請先閱讀背面之注意事項再填寫本頁) 403929 五'發明説明6 ) 柵電極之橫支持線1 1 5之螺旋狀捲繞線時，兩捲繞線恰 好重叠狀態地組合而成之情形。此時陰極燈絲1 1 2之捲 繞線與柵電極之支持線1 1 5之捲繞線之.由真橫方向觀視 之間隔（G)爲零（G = 〇)。 如上述地組合之電子管之電壓放大率（V )乃由於從 陰極燈絲所放出之熱電子係由柵電極之橫支持線115而 最多地被抑制其通過，因此如圖6所示之特性曲線圖之橫 軸之對應於（G = 〇)之最小之電壓放大率。試作 之3極型送訊管時7。而此狀態之陰極燈絲1 1 2 之圓周方向之假設地規定之特定位置爲Y，柵電極之同特 定位置爲Z而表示於圖5 » 經濟部中央標準局員工消費合作社印繁 接著圖5之（5b)乃，陰極燈絲1 12之位置爲原 狀，而將柵電極1 1 3移至由上方視順時鐘轉9 0度方向 而定位組合時之情形。所以對於陰極燈絲1 1 2之上述特 定位置Y而栅電極之將定位置Z乃在於順時鐘方向進9 0 度之位置。此時陰極燈絲1 1 2之繞線與柵電極之橫支持 線1 1 5之鄰接之繞線之偏差間隙（G)乃相當於兩繞線 節距間隔（Pf · Ps)之四分之一，（G = 〇 . 25 . P f )於是如此地組合而成之電子管之電壓放大率（/z ) 乃相當於圖6之橫軸之（G = 〇.25) ，//与20。 又如圖5之（5 c )所示，對於陰極燈絲1 1 2之特 定位置Y而將柵電極113之特定位置Z組合於順時鐘方 向進1 8 0°之位置之情形時，兩繞線之偏差間隔G即相 當於繞線節距間隔（Pf.Ps)之二分之一，（G = -6- (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（21〇Χ297公釐） 403929__ 五、發明説明& ) 0 . 5 · P f )。而如此組合之電子管之電壓放大率（A )乃對應於圖6之橫軸之（G = 0.5)，从兰24« 由上述可知，在於陰極燈絲之螺旋捲繞方向與柵電極 之橫支持線之螺旋狀捲繞方向捲繞於同方向之以往之構造 時，雖然具有調節兩者之繞線之偏差間隔（G )而可以某 一程度地任意地設定電子管之動作特性（電壓放大率// ) 之利點，惟在同一種之電子管之大量生產中，陰極燈絲與 柵電極之圓周方向稍有偏差即使特性不均（不相同，有偏 差）有製造出特性不相同之電子管之虞，所以對於品質整 齊之電子管之要求之大量生產上乃靥一妨礙。 本發明乃提供一種，可以解決習用構造之不合宜之點 ，而在同一種之電子管之大量生產上，以陰極燈絲與柵電 極之圓周方向之位置關係不一定化地予以組合之下，仍然 可製出其動作特性，特別是電壓放大率（#)之偏差少， 而品質均一之多極電子管爲目的。 (解決問題之手段） 經濟部中央標準局貝工消費合作社印製 {請先閲讀背面之注意事項再填寫本頁) 本發明係具備：以規定節距地螺旋狀地捲繞之金屬線 而成之電子放出用直線型陰極燈絲：及備有，配置於上述 陰極燈絲之外周之多數支之柵極縱線，及螺旋狀地捲繞於 該柵極縱線之柵電極橫支線之至少一個柵電極；以及據位 於上述柵電極之外周位置之筒狀陽極：而構成之多極電子 管中，該柵電極之橫支持線乃，與上述陰極燈絲之螺旋狀 之捲繞方向成相反方向地被螺旋狀捲繞而成之多極電子管 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 403929 A7 B7 五、發明説明6 ) 〇 又本發明之多極電子管乃該柵電極之橫支持線螺旋狀 之繞線節距間隔（P S )爲陰極燈絲之螺旋狀繞線節距間 隔（P f )之0 . 8倍以上爲其特徵。 再者，本發明之多極電子管乃陰極燈絲柔柵電極之橫 支持線均分別由單一之金屬線所構成爲其特徵。 又，再者，本發明之多極電子管乃，柵電極之橫支持 線之直徑（D s )與陰極燈絲之金屬線之直徑（D f )之 比，即 (D s/D f )爲〇 . 8以下爲其特徵者。 (發明之實施形態） 下面參照附圖之說明本發明之實施形態。 經濟部中央標準局貝工消費合作社印製 圖1係表示例如使用於高週波縫紉機等之高週波介質 加熱裝置之例如3 0MHz，6 kw之高頻振盪輸出之動 作特性之3極送訊管上，適用本發明之實施例。此送訊管 係，在陰極桿1 1上，介著瓷製絕緣圓筒1 2氣密地接合 有兼用真空容器之一部份之銅製之圓筒狀陽極1 3。在此 陽極1 3上固定有熱用散熱片1 4，排氣管1 5，排氣管 保護罩1 6。 在陰極桿1 1上互相電氣地絕緣地固定有一對之陰極 燈絲端子17，18，及柵電極端子19。另一方之陰極 燈絲端子1 7上固定有用於撐燈絲且供給加熱電流用之棒 狀之中心支柱2 1，另一方之陰極燈絲端子1 8固定有同 -8- (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家樣準（CNS ) A4規格（210X297公釐） 403929 A7 ____ B7 五、發明説明6 ) 樣之側支柱2 2。並且在這些一對之支柱2 1，2 2之各 先端部分別以熔接而電氣的及機械的連結並支撐有螺旋狀 地捲繞之熱電子放出用之直熱形陰極燈絲2 3之各先端部 2 3 a，2 3 b ° 在陰極燈絲2 3之外周，保持規定間隔地同軸狀地配 置有籠型之圓筒狀柵極2 4。該柵極電極2 4乃備有，在 規定之半徑所規定之圓周上，以規定之間隔地被配置之多 數支之柵極縱線2 5，及螺旋狀地捲繞於該柵極縱線之外 周，且它與各縱線2 5之交點被熔接之橫支持線2 6。柵 電極2 4乃其圖示下端部被固定於柵極支撐圓筒2 7，圖 示之上端部即固定於柵極支持環2 8 »又柵極支持圓筒 2 7即固定在陰極桿1 1之柵電極端子板1 9。 經濟部中央標準局員工消費合作社印製 圖2乃陰極燈絲及柵電極之要部放大圖。陰極燈絲 2 3係直徑（Df) 1mm程度之含有微量钍（Th)之 鎢（W)合金線。將它如同圖（a )所示，以配置於中心 軸上之中心支柱2 1之周圍以規定之螺旋外側半徑（R f )，規定之節距間隔（Pf)地螺旋狀地捲繞規定回數， 又此陰極燈絲2 3之捲數（N)即例如8〜1 0之範圍而 隨應於被要求於送訊管之特性地任意的予以設定也。 柵電極24乃如圖2之（b)所示，由：以規定之半 徑（R s )所規定之圓之圓周上，例如以2 4支等間隔地 排列之柵極縱線2 5，及在該縱線2 5之外周捲繞成對於 陰極燈絲2 3之螺旋狀捲繞之方向成相反之螺旋狀捲繞之 —支橫支持線2 6所構成。而各柵極縱線2 5與橫支持線 -9- (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 403929 A7 B7 五、發明説明) 2 6之交點即例如以熔接而結合在~起》 該柵極縱線25乃，直徑例如0.4mm之鉬線，橫 支持線2 6即直徑（D s )爲與縱線2 5例如同等或 1.0〜2.0倍範圍之同樣之鉬線。又爲了不希望太多 地妨礙電子束之通過量起見，柵電極之橫支持線之直徑（ D s )與陰極燈絲之金屬線之直徑（D ί )之比（D s/ Df)選定爲0 . 8以下，最合宜爲0 . 5以下。 並且該柵電極之橫支持線2 6之螺旋狀捲繞之方向乃 與陰極燈絲2 3之螺旋狀捲繞之方向成相反方向，又此橫 支持線2 6之螺旋狀繞線節距間隙（P s )乃爲了不希望 過於妨礙電子束之通過量起見，^使之爲陰極燈絲2 3之螺 旋狀繞線節距間隔（P f )之0 . 8倍以上，更合宜爲 1 . 0倍以上。 依此實施例時，由正橫方向觀視之陰極燈絲2 3之螺 旋狀繞線與柵電極之橫支持線2 6之重疊之場所之數目即 ，與這些燈絲與柵電極之圓周方向之位置之偏差（移位） 無關地大致一定，所以雖然燈絲與柵電極在組合時有位置 之偏差，該由陰極燈絲所放射之熱電子之朝向於圓筒狀電 極之行程中由柵電極所阻止之或然率大致爲一定，與圖6 之以往構造時之特性（R )相比，本發明實施例時之電壓 放大率（#)即如在圖6上以標號（T)所表示//#2 3 而大致一定，幾乎沒有偏差（沒有不均勻）。 於是如上所述，在大量地組合製造多極電子管時，不 須高精度地對合陰極燈絲與柵電極之圓周方向之關係位置 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁)403929 A7 __B7_ V. Description of the invention 纟) (Technical field to which the invention belongs) The present invention relates to a multipolar electron tube having a spirally shaped direct heating cathode filament, at least one cage control grid electrode, and a cylindrical anode. (Prior art) One type of multi-electrode tube is, for example, a transmitter tube, which has a cathode that emits hot electrons, a cylindrical anode for capturing thermionic electrons emitted by the cathode, and is arranged between these cathodes and anode At least one control gate electrode for controlling the throughput of thermionic electrons. As the cathode, a straight heat filament made of rhenium-tungsten metal wire spirally wound is generally used. In addition, the control grid electrode generally uses a plurality of molybdenum group wires arranged in a longitudinal direction (that is, parallel to the tube axis), and is welded to a cage grid wound around the vertical support line and wound around the vertical support line . Such a multi-electrode tube has a structure disclosed in Japanese Patent Publication Shiko Sho 38-8768 and Shiko Sho 41-16896, which are well known. The structure disclosed in the former bulletin is a spiral with a cathode pillar 1 1 1 fixedly supported on a tube shaft as shown in Figure 3 (a) (b) (printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs). Straight wound straight cathode filament 1 1 2. A control grid electrode 1 1 3 is coaxially arranged around the cathode filament 1 1 2. The gate electrode 1 13 has a plurality of vertical lines 1 14 made of a tungsten group line, and a horizontal support line 1 1 5 that is wound in a thick spiral shape around the vertical line. The horizontal support line 1 1 5 is relatively vertical. Wire 1 1 4 thick-diameter metal wire, and the longitudinal wire is welded at its intersection, so it has a mechanically stable support for the longitudinal wire, and prevent -4- (Please read the precautions on the back before filling this page ) This paper size applies to China National Standard (CNS) A4 (210X297 mm). Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. A7 __403929_B7____ 5. Description of the invention. A cylindrical anode 1 1 6 is disposed so as to surround these filaments and grid electrodes, and part of a vacuum container. On the other hand, the latter is disclosed in the structural system disclosed in Shiko Sho 4 1 -1 6 8 9 6. As shown in FIG. 4, there are several horizontal support lines 1 1 5 that are rolled perpendicularly to the tube axis. Around. In this structure, it is necessary to prepare a horizontal support line 1 15 which is bent to a predetermined diameter and fit the outer periphery of the vertical line at a predetermined interval and then weld the intersections. Therefore, there is a problem that the manufacturing is complicated. In contrast to the former structure described above, one or two horizontal support lines 1 1 5 can be continuously wound around the outer periphery of the vertical line and the intersections can be welded. Therefore, manufacturing can be simplified. However, as shown in the past, the spiral winding direction of the cathode filament 1 12 is the same as the spiral winding direction of the horizontal support line of the grid electrode, and the spiral winding line pitch of the cathode filament 1 1 2 The interval (P f) is equal to or approximately the same as the pitch interval (P s) of the spiral winding line of the lateral support line of the gate electrode. (Problems to be Solved by the Invention) According to the conventional structure described above, that is, as shown in FIG. 5 and FIG. 6, the spiral winding line of the cathode filament 112 and the spiral winding line of the horizontal supporting line of the grid electrode are formed. It corresponds slightly to the degree of superposition of the direction in which the direction of the flow of the hot electron flows, and the operating characteristics, especially the voltage magnification (//), are greatly changed as shown by the dotted line (R). The detailed figure (5a) is the representation of the pattern. The spiral winding line of the cathode filament 1 1 2 viewed from the transverse direction, that is, perpendicular to the tube axis, and the paper size apply the Chinese National Standard (CNS) A4. Specifications (210X297mm) n 1 —- »--1 '· 1—--I ^-------I X- --- (Please read the notes on the back before filling this page) 403929 Fifth invention description 6) In the case where the spirally wound wires of the horizontal support lines 1 1 5 of the gate electrode are formed, the two wound wires are combined with each other just to overlap. At this time, the interval between the winding of the cathode filament 1 12 and the winding of the supporting electrode 1 15 of the grid electrode. The interval (G) viewed from the true transverse direction is zero (G = 0). The voltage amplification factor (V) of the combined electron tube as described above is because the hot electrons emitted from the cathode filament are most inhibited from passing by the horizontal support line 115 of the grid electrode, so the characteristic curve shown in FIG. 6 The horizontal axis corresponds to the smallest voltage amplification factor (G = 0). Trial of the three-pole transmitter tube 7. The specific position of the cathode filament 1 1 2 in this state in the circumferential direction is assumed to be Y, and the specific position of the grid electrode is Z. It is shown in Figure 5 » (5b) This is the case when the position of the cathode filament 112 is in the original state, and the grid electrode 11 is moved to the position of 90 ° when it is clockwise rotated from the upper direction. Therefore, for the above-mentioned specific position Y of the cathode filament 1 12 and the fixed position Z of the grid electrode, the position is 90 degrees in the clockwise direction. At this time, the deviation gap (G) between the winding of the cathode filament 1 1 2 and the adjacent winding of the horizontal support line 1 15 of the grid electrode is equivalent to a quarter of the interval between the two windings (Pf · Ps). (G = 0.25. P f) The voltage amplification factor (/ z) of the electron tube thus combined is equivalent to (G = 0.25) of the horizontal axis of FIG. 6 // and 20. As shown in FIG. 5 (5c), when the specific position Y of the cathode filament 1 12 and the specific position Z of the grid electrode 113 are combined in a clockwise position of 180 °, the two windings The deviation interval G is equivalent to one-half of the winding pitch interval (Pf.Ps), (G = -6- (Please read the precautions on the back before filling this page) This paper size applies Chinese national standards ( CNS) A4 specification (21 × 297 mm) 403929__ 5. Description of the invention &) 0.5 · P f). The voltage magnification (A) of the electron tube thus combined corresponds to the horizontal axis (G = 0.5) of FIG. 6. From the blue 24 «, it can be seen from the above that the spiral winding direction of the cathode filament and the horizontal support line of the grid electrode When the helical winding direction is wound in the conventional structure in the same direction, although the deviation interval (G) between the windings of the two is adjusted, the operating characteristics of the tube can be arbitrarily set to a certain degree (voltage amplification ratio // ), But in the mass production of the same type of electron tube, the circumferential direction of the cathode filament and the grid electrode is slightly deviated, even if the characteristics are uneven (different, deviated), there may be the possibility of producing electron tubes with different characteristics, so Mass production of the requirements for a neat tube is a hindrance. The invention provides a solution that can solve the unsuitable points of the conventional structure. In the mass production of the same type of electronic tube, the positional relationship between the cathode filament and the grid electrode in the circumferential direction is not necessarily combined, and still can The purpose is to produce a multi-polarity tube with uniform operating characteristics, such as small variation in voltage amplification factor (#), and uniform quality. (Means of Solving the Problem) Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs {Please read the precautions on the back before filling this page) The present invention is provided with: a metal wire spirally wound at a predetermined pitch Straight cathode filament for electron emission: and at least one grid provided with a plurality of grid longitudinal lines arranged on the outer periphery of the cathode filament and spirally wound around the grid electrode transverse lateral lines of the grid longitudinal line Electrode; and a cylindrical anode located at the outer peripheral position of the grid electrode: In the multi-electrode tube formed, the transverse support line of the grid electrode is spirally opposite to the spiral winding direction of the cathode filament. Multi-polar tube made from a spiral shape. The paper size is applicable to Chinese National Standard (CNS) A4 (210X297 mm) 403929 A7 B7 V. Description of the invention 6) 〇The multi-polar tube of the present invention is the horizontal support of the grid electrode It is characteristic that the spiral winding pitch interval (PS) of the wire is 0.8 times or more of the spiral winding pitch interval (Pf) of the cathode filament. Furthermore, the multi-electrode tube of the present invention is characterized in that the transverse supporting lines of the flexible filament electrode of the cathode filament are each composed of a single metal wire. Furthermore, the multi-electrode tube of the present invention is the ratio of the diameter (D s) of the lateral support line of the grid electrode to the diameter (D f) of the metal wire of the cathode filament, that is, (D s / D f) is 0. . 8 are the following characteristics. (Embodiment of Invention) An embodiment of the present invention will be described below with reference to the drawings. Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Shelley Consumer Cooperative, Figure 1 is a 3-pole transmitter tube showing the operating characteristics of high-frequency oscillatory output such as 30MHz and 6kw for high-frequency medium heating devices such as high-frequency sewing machines. , The embodiment of the present invention is applicable. This transmitting tube system is hermetically bonded to a cathode rod 11 through a ceramic insulating cylinder 12 and a cylindrical anode 13 made of copper, which is also part of a vacuum container. A heat sink 14 for heat, an exhaust pipe 15 and an exhaust pipe protective cover 16 are fixed to the anode 13. A pair of cathode filament terminals 17, 18, and a grid electrode terminal 19 are fixed to the cathode rod 11 electrically insulated from each other. The other cathode filament terminal 17 is fixed with a rod-shaped central post 2 1 for supporting the filament and supplying heating current, and the other cathode filament terminal 1 8 is fixed with the same -8- (Please read the precautions on the back first (Fill in this page again) This paper size is applicable to China National Sample Standard (CNS) A4 (210X297 mm) 403929 A7 ____ B7 V. Description of Invention 6) Sample side pillar 2 2 In addition, at each of the tip ends of the pair of pillars 21, 2 2 is electrically and mechanically connected by welding, and each end of a directly heated cathode filament 23 for spirally wound thermoelectron discharge is supported. The portions 2 3 a, 2 3 b ° are arranged coaxially with a cage-shaped cylindrical grid 24 at predetermined intervals on the outer periphery of the cathode filament 23. The gate electrode 24 is provided with a plurality of gate longitudinal lines 25 arranged at predetermined intervals on a circumference defined by a predetermined radius, and is spirally wound around the gate longitudinal line. Outer perimeter, and the horizontal support line 26 which is welded to the intersection point with each vertical line 25. The grid electrode 24 is fixed to the grid supporting cylinder 2 7 at the lower end, and the grid supporting ring 2 8 is fixed at the upper end to the cathode pole 1. 1 的 Grid electrode terminal board 19. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Figure 2 is an enlarged view of the main parts of the cathode filament and grid electrode. The cathode filament 23 is a tungsten (W) alloy wire containing a small amount of thorium (Th) with a diameter (Df) of about 1 mm. As shown in figure (a), it is spirally wound around the central pillar 21, which is arranged on the central axis, with a predetermined spiral outer radius (Rf) and a predetermined pitch interval (Pf). The number of coils (N) of the cathode filament 23 is, for example, in the range of 8 to 10, and can be arbitrarily set according to the characteristics required of the transmission tube. The gate electrode 24 is, as shown in FIG. 2 (b), a vertical grid line of a circle defined by a predetermined radius (R s), for example, 24 vertical grid lines 2 5, and A lateral support line 26 is formed by winding around the longitudinal line 25 with a spiral winding in a direction opposite to the spiral winding direction of the cathode filament 23. And each grid vertical line 2 5 and horizontal support line -9- (Please read the precautions on the back before filling in this page) This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) 403929 A7 B7 V. Description of the invention) The intersection of 2 6 is, for example, joined by welding. The vertical grid line 25 is a molybdenum wire with a diameter of, for example, 0.4 mm, and the horizontal support line 2 6 is the diameter (D s). For example, the same molybdenum wire in the same or 1.0 to 2.0 times range. In order not to impede the throughput of the electron beam too much, the ratio (D s / Df) of the diameter (D s) of the horizontal support line of the grid electrode to the diameter (D ί) of the metal wire of the cathode filament is selected as 0.8 or less, most preferably 0.5 or less. And the spiral winding direction of the horizontal support line 26 of the grid electrode is opposite to the spiral winding direction of the cathode filament 23, and the spiral winding pitch gap of the horizontal support line 2 6 ( P s) is to prevent the electron beam from passing too much, so that it is more than 0.8 times the spiral winding pitch interval (P f) of the cathode filament 23, more preferably 1.0. Times more. According to this embodiment, the number of places where the spiral winding of the cathode filament 23 viewed from the front and the lateral direction overlaps with the lateral support line 26 of the grid electrode, that is, the positions of these filaments and the circumferential direction of the grid electrode The deviation (displacement) is approximately constant regardless of the position, so although the filament and the grid electrode have a positional deviation when combined, the thermal electrons emitted by the cathode filament are prevented by the grid electrode during the stroke of the cylindrical electrode. The probability is almost constant. Compared with the characteristic (R) of the conventional structure in FIG. 6, the voltage amplification factor (#) in the embodiment of the present invention is as indicated by the reference numeral (T) on FIG. 6 // # 2 3 Roughly, there is almost no deviation (no unevenness). Therefore, as described above, when manufacturing a large number of multi-electrode tubes in combination, it is not necessary to accurately match the circumferential position of the cathode filament and the grid electrode. (Please read the notes on the back before filling out this page)
、1T 經濟部中央標準局員工消費合作社印製 -10- _403929 b7__ 五、發明説明6 ) 之下，仍然可獲得大致均一之動作特性’特別是電壓放大 率（#)之特性，因此可以使電子管之組合簡單化。 又本發明亦可適用於二個以上之柵電極之配置成同軸 狀之多極電子管，其中至少一個柵電極之構造爲上述之構 成時即可享受上述之利點》 又上述之實施例中，陰極燈絲係以一支螺旋狀繞線而 構成爲例，惟並不侷限於此。如圖3 ( b )所示之二重之 螺旋狀繞線來構成亦可。又柵電極之橫支持線也不侷限於 單線繞線，如圖3 ( c )所示之二重螺旋狀繞線亦可或更 多之繞線數亦無妨。 但是這些時，陰極燈絲或柵電極橫支持線之繞線節距 間隔（P f或P s )即對於各個均包括其繞線而從正橫方 向觀視之鄰接之繞線之節距間隔之平均値而予以定義。又 如圖1及圖2所示之單繞線時之繞線節距間隔（Pf， P s )也以全繞線節距之平均値來定義" (發明之效果） 經濟部中央標準局員工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁} 如上所述依本發明時，由於陰極燈絲之螺旋捲繞方向 與柵電極之橫支持線螺旋捲繞方向互相成相反方向，所以 不管陰極燈絲與栅電極之圓周方向之位置偏差有多少均能 獲得大致一定之動作特性*特別是電壓放大率，於是以低 成本地大量生產動作特性均一之品質整齊劃一之電子管。 圖式之簡單說明 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） _ w · 40392/8 B7 五、發明説明6 ) 第1圖係表示適用本發明之實施形態之具有螺旋形陰 極燈絲及_柵電極之電子管之構造之縱剖面圖。 第2 示圖1所示之電子管之陰極燈絲及柵電極 之要部放 第3 往習知之電子管之一例槪略構造圖。 第4圖係以往習知之電子管之其他例之要部縱剖面圖 .?：： 0 第5 0奉@圖3所示之電子管之陰極燈絲與柵電極 之橫支持線之^關係之模式圖。 第6圖係比較圖1及圖3所示之電壓放大率之變動特 性之圖。 (標號之說明） 2 3 :陰極燈絲， 2 4 :柵電極， 2 5 :柵極縱線， 2 6 :柵電極之橫支持線， 經濟部中央標準局貝工消費合作社印製 1 3 :陽極， P s :柵電極橫支持線之螺旋狀繞線節距間距， P f :陰極燈絲之螺旋狀繞線節距間隔， D s :柵電極之橫支持線之直徑， D f :陰極燈絲之金屬線之直徑。 •12- (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家榇準（CNS ) A4規格（210X297公釐）Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs of the 1T-10--10-_403929 b7__ V. Description of the invention 6), you can still obtain approximately uniform operating characteristics' especially the characteristics of the voltage amplification (#), so it can make electronic tubes The combination is simplified. The present invention can also be applied to a multipolar electron tube with two or more grid electrodes arranged in a coaxial shape. When at least one of the grid electrodes is configured as described above, the above advantages can be enjoyed. In the above embodiment, The cathode filament is constituted by taking a spiral winding as an example, but it is not limited to this. It is also possible to form a double spiral winding as shown in Fig. 3 (b). Moreover, the horizontal support line of the grid electrode is not limited to single wire winding, as shown in Fig. 3 (c), the double helical winding may also have a larger number of windings. However, in these cases, the winding pitch interval (P f or P s) of the lateral support wire of the cathode filament or grid electrode is the pitch interval of adjacent windings each including its winding and viewed from the front and horizontal directions. Average is defined. As shown in Figures 1 and 2, the winding pitch interval (Pf, P s) in the single winding is also defined by the average 全 of the full winding pitch. (Effect of the invention) Central Bureau of Standards, Ministry of Economic Affairs Printed by the employee consumer cooperative (please read the precautions on the back before filling out this page). As described above, according to the present invention, the spiral winding direction of the cathode filament and the spiral winding direction of the horizontal support line of the grid electrode are opposite to each other. Therefore, regardless of the positional deviation of the cathode filament and the grid electrode in the circumferential direction, approximately certain operating characteristics can be obtained * especially the voltage amplification factor, so that uniform and uniform quality electronic tubes can be produced at low cost in large quantities. Briefly explain that this paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) _ w · 40392/8 B7 V. Description of the invention 6) Figure 1 shows the spiral cathode filament with spiral shape and the embodiment of the present invention. _ Vertical sectional view of the structure of the gate electrode's electron tube. Fig. 2 shows the cathode filament and grid electrode parts of the electron tube shown in Fig. 1. Fig. 3 is a schematic diagram of an example of a conventional electron tube. Fig. 4 is a longitudinal sectional view of the main part of other examples of conventionally known electron tubes.? :: 0 The pattern of the relationship between the horizontal support line of the cathode filament and the grid electrode of the electron tube shown in Fig. 5 @@ 3. Fig. 6 is a graph comparing the fluctuation characteristics of the voltage amplification factor shown in Figs. (Description of symbols) 2 3: Cathode filament, 2 4: Grid electrode, 2 5: Grid vertical line, 2 6: Horizontal support line of grid electrode, Printed by the Bayer Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 1 3: Anode , P s: Spiral winding pitch of grid electrode lateral support line, P f: Spiral winding pitch of cathode wire filament, D s: Diameter of horizontal support line of grid electrode, D f: Cathode filament The diameter of the metal wire. • 12- (Please read the notes on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 (210X297 mm)