KR0136474B1 - Fixing apparatus of impregnated type pellet - Google Patents

Fixing apparatus of impregnated type pellet

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Publication number
KR0136474B1
KR0136474B1 KR1019940031313A KR19940031313A KR0136474B1 KR 0136474 B1 KR0136474 B1 KR 0136474B1 KR 1019940031313 A KR1019940031313 A KR 1019940031313A KR 19940031313 A KR19940031313 A KR 19940031313A KR 0136474 B1 KR0136474 B1 KR 0136474B1
Authority
KR
South Korea
Prior art keywords
pellet
cathode
cathode sleeve
sleeve
impregnated
Prior art date
Application number
KR1019940031313A
Other languages
Korean (ko)
Other versions
KR960019377A (en
Inventor
이경상
이종환
Original Assignee
구자홍
엘지전자주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 구자홍, 엘지전자주식회사 filed Critical 구자홍
Priority to KR1019940031313A priority Critical patent/KR0136474B1/en
Publication of KR960019377A publication Critical patent/KR960019377A/en
Application granted granted Critical
Publication of KR0136474B1 publication Critical patent/KR0136474B1/en

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00Details 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
    • H01J1/02Main electrodes
    • H01J1/13Solid thermionic cathodes
    • H01J1/20Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/26Supports for the emissive material

Landscapes

  • Solid Thermionic Cathode (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

본 발명은 히터의 가열에 의해 방사물질을 방출시키는 함침형펠렛의 고정장치에 관한 것으로써, 좀더 구체적으로는 함침형 펠렛과 음극 슬리이브의 구조를 개선하여 이들의 결합작업이 용이해질 수 있도록 한 것이다.The present invention relates to a device for fixing impregnated pellets that emits radiation by heating a heater. will be.

이를위해, 본 발명은 음극 슬리이브(6)의 상면에 반구형상의 요입홈(6a)을 형성하여 상기 요입홈내에 구형상의 펠렛(7)을 위치시킨 다음 음극 슬리이브(6)의 상면을 내측으로 절곡하여 펠렛(7)이 음극 슬리이브(6)내에 고정되도록 한 것이다.To this end, the present invention forms a hemispherical recessed groove 6a on the upper surface of the cathode sleeve 6 to place the spherical pellet 7 in the recessed groove, and then the upper surface of the cathode sleeve 6 inwardly. It is bent so that the pellets 7 are fixed in the cathode sleeve 6.

Description

함침형펠렛의 고정장치Fixing device for impregnated pellet

제1도는 종래의 장치가 적용된 함침형 음극구조체의 종단면도1 is a longitudinal sectional view of an impregnated cathode structure to which a conventional apparatus is applied;

제2도는 본 발명을 설명하기 위한 음극구조체의 종단면도로써, (a)는 음극 슬리이브의 상면에 펠렛이 얹혀진 상태도, (b)는 음극 슬리이브의 상면에 얹혀진 펠렛이 고정된 상태도2 is a longitudinal cross-sectional view of the negative electrode structure for explaining the present invention, (a) is a state in which the pellet is placed on the upper surface of the cathode sleeve, (b) is a state in which the pellet is placed on the upper surface of the cathode sleeve fixed

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

6:음극 슬리이브 6a:요입홈6: cathode sleeve 6a: indentation groove

7:펠렛 7a:절단면7: Pellet 7a: Cutting Section

본 발명은 히터의 가열에 의해 방사물질을 방출시키는 함침형펠렛의 고정장치에 관한 것으로써, 좀더 구체적으로는 함침형펠렛과 음극 슬리이브의 구조를 개선하여 이들의 결합작업이 용이해질 수 있도록 한 것이다.The present invention relates to a device for fixing impregnated pellets that emits radiation by heating the heater, and more specifically, to improve the structure of the impregnated pellets and the cathode sleeves so as to facilitate their joining operation. will be.

일반적으로 함침형 음극구조체는 주로 고전류밀도를 필요로 하는 오실로스코프(oscilloscope)등에 사용되어 왔으나, 근래에는 텔레비젼 수상기의 대형화 및 고정세화 경향에 따라 음극선관에 사용되는 전자총에 있어서도 고전류밀도(5A/cm2이상)를 성취할 수 있도록 함침형 음극구조체가 적용되고 있는 추세이다.In general, impregnated cathode structures have been used mainly for oscilloscopes that require high current density, but recently high current density (5A / cm 2) is also used in electron guns used in cathode ray tubes due to the trend toward larger and higher resolution television receivers. The impregnated cathode structure is being applied to achieve the above).

첨부도면 제1도는 종래의 장치가 적용된 함침형 음극구조체의 종단면도로써, 텅스텐(W)등 다공질 내열성 소결체로 된 펠렛(pellet)(1)에 전자방사물질[일반적으로 BaCO3, CaCO3, Al2O3혼합물로 부터 분해과정을 거친 BaO, CaO, Al2O3(mole비4:1:1)혼합산화물]을 1600℃의 분위기에서 용융 함침하고 상기 펠렛의 상부에는 이리듐(Ir), 오스뮴/루테늄(Os/Ru),레늄(Re)등의 희토류금속을 스퍼터링(sputtering)하여 피복층(2)을 형성한 다음 이와같이 얻어진 펠렛(1)을 몰리브덴(Mo) 또는 탄탈륨(Ta)등 내열성금속으로 된 음극컵(3)에서 이탈되지 않도록 되어 있다.1 is a longitudinal cross-sectional view of an impregnated cathode structure to which a conventional apparatus is applied, and an electron emitting material [generally BaCO 3 , CaCO 3 , Al] in a pellet 1 made of a porous heat-resistant sintered body such as tungsten (W). BaO, CaO, Al 2 O 3 (mole ratio 4: 1: 1) mixed oxide], which has been decomposed from the 2 O 3 mixture, is melt-impregnated in an atmosphere of 1600 ° C., and iridium (Ir), osmium is placed on top of the pellet. Sputtering rare earth metals such as ruthenium (Os / Ru) and rhenium (Re) to form a coating layer (2), and then pellets (1) thus obtained are made of a heat resistant metal such as molybdenum (Mo) or tantalum (Ta). It is not to be separated from the negative electrode cup 3.

상기한 바와 같이 펠렛(1)이 삽입고정된 음극컵(3)은 몰리브덴(Mo) 또는 탄탈륨(Ta)등 내열성금속으로 된 음극 슬리이브(4)의 상단에 레이저 용접고정하고, 상기 음극 슬리이브(4)의 내부에는 펠렛(1)을 가열시키기 위한 히터(5)를 내장하도록 되어 있다.As described above, the cathode cup 3 into which the pellet 1 is inserted and fixed is laser welded to the upper end of the cathode sleeve 4 made of a heat resistant metal such as molybdenum (Mo) or tantalum (Ta), and the cathode sleeve Inside the (4), the heater 5 for heating the pellets 1 is incorporated.

따라서 음극 슬리이브(4)의 내부에 설치된 히터(5)가 동작하여 펠렛(1)을 가열시키면 상기 펠렛의 상면에 스퍼터링된 피복층(2)에서 열전자를 방출시키게 된다.Therefore, when the heater 5 installed inside the cathode sleeve 4 operates to heat the pellet 1, hot electrons are emitted from the coating layer 2 sputtered on the upper surface of the pellet.

그러나 이러한 종래의 음극구조체는 펠렛(1)을 음극컵(3)내에 고정시킨 다음 상기 음극컵을 음극 슬리이브(4)에 레이저 용접고정하도록 되어 있으므로 부품수가 증가 됨은 물론 레이저용접공정이 반드시 필요하게 되었고, 이에따라 조립시간의 지연에 따라 생산성이 저하되는 문제점이 있었다.However, such a conventional cathode structure is to fix the pellet (1) in the cathode cup (3) and then to fix the cathode cup to the cathode sleeve (4), so that the number of parts is increased as well as the laser welding process is necessarily required As a result, there was a problem that the productivity is lowered according to the delay of the assembly time.

본 발명은 종래의 이와같은 문제점을 해결하기 위해 안출한 것으로써, 그 구조를 개선하여 별도의 음극컵과 레이저용접공정을 거치지 않고도 펠렛을 음극 슬리이브의 상면에 고정시킬 수 있도록 하는데 그 목적이 있다.The present invention has been made to solve such a problem in the prior art, and the object of the present invention is to improve the structure and to fix the pellet to the upper surface of the cathode sleeve without going through a separate cathode cup and laser welding process. .

상기 목적을 달성하기 위한 본 발명의 형태에 따르면, 음극 슬리이브의 상면에 반구형상의 요입홈을 형성하여 상기 요입홈내에 구형상의 펠렛을 위치시킨 다음 음극 슬리이브의 상면을 내측으로 절곡하여 펠렛이 음극 슬리이브내에 고정되도록 하여서된 함침형펠렛의 고정장치가 제공된다.According to the aspect of the present invention for achieving the above object, by forming a hemispherical concave groove on the upper surface of the negative electrode sleeve to place a spherical pellet in the concave groove and then bent the upper surface of the negative electrode sleeve inward to pellet An apparatus for fixing impregnated pellets is provided that is intended to be secured in a sleeve.

이하, 본 발명을 일 실시예로 도시한 첨부된 도면 제2도를 참고로 하여 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to FIG. 2 of the accompanying drawings.

첨부도면 제2도는 본 발명을 설명하기 위한 음극구조체의 종단면도로써, 본 발명은 음극 슬리이브(6)의 상면에 반구형상의 요입홈(6a)이 형성되어 있고 상기 요입홈의 내부에는 구형상으로 된 펠렛(7)이 위치되어 음극 슬리이브(6)의 상부 외주연에 의해 고정된다.2 is a longitudinal cross-sectional view of a negative electrode structure for explaining the present invention, the present invention is a hemispherical recess groove 6a is formed on the upper surface of the cathode sleeve 6 and the inside of the recess groove in a spherical shape Pellets 7 are positioned and fixed by the upper outer periphery of the cathode sleeve 6.

이와 같은 펠렛(7)의 상면에는 피복층(도시는 생략함)이 스퍼터링되어 있고 점선으로 도시한 바와 같이 절단면(7a)을 형성할 수 도 있다.A coating layer (not shown) is sputtered on the upper surface of such a pellet 7, and the cut surface 7a may be formed as shown by the dotted line.

이와 같이 구성된 본 발명의 작용, 효과를 설명하면 다음과 같다.Referring to the operation and effects of the present invention configured as described above are as follows.

먼저 음극 슬리이브(6)를 제2도의 (a)와 같이 상면에 반구형상의 요입홈(6a)이 형성되도록 가공한 다음 상기 요입홈(6a)내에 구형상으로 된 펠렛(7)을 위치시킨다.First, the cathode sleeve 6 is processed to form a hemispherical recessed groove 6a on the upper surface as shown in FIG. 2 (a), and then a pellet 7 having a spherical shape is placed in the recessed groove 6a.

이와 같이 요입홈(6a)내에 펠렛(7)을 얹어 놓은 다음에는 상기 음극 슬리이브(6)의 상부 외주연을 제2도의 (b)와 같이 내측으로 오므려 펠렛(7)이 요입홈(6a)내에 고정되도록 한다.After the pellet 7 is placed in the recess 6a as described above, the upper outer periphery of the cathode sleeve 6 is squeezed inward as shown in FIG. 2 (b) so that the pellet 7 is recessed 6a. Inside).

이때 상기 요입홈(6a)의 깊이는 펠렛(7)의 반지름보다 크게 설정하여야만 펠렛이 음극 슬리이브(6)의 상부 외주면에 의해 지지될 때 요입홈(6a)에서 이탈되지 않게 되는 것이다.At this time, the depth of the concave groove (6a) should be set to be larger than the radius of the pellet (7) will not be separated from the concave groove (6a) when the pellet is supported by the upper outer peripheral surface of the cathode sleeve (6).

이상에서와 같이 본 발명은 별도의 음극켭과 레이저용접공정을 거치지 않고도 음극슬리이브의 상면에 펠렛을 직접고정할 수 있게 되므로 부품수 및 작업공정의 감소로 생산성을 극대화시키게 됨은 물론 생산원가를 절감하게 되는 효과를 얻게 된다.As described above, the present invention can directly fix the pellets on the upper surface of the cathode sleeve without going through a separate cathode lighting and laser welding process, thereby maximizing productivity by reducing the number of parts and work processes as well as reducing production costs. You will get the effect.

Claims (2)

음극 슬리이브의 상면에 반구형상의 요입홈을 형성하여 상기 요입홈내에 구형상의 펠렛을 위치시킨 다음 음극 슬리이브의 상면을 내측으로 절곡하여 펠렛이 음극 슬리이브내에 고정되도록 함을 특징으로 하는 함침형 펠렛의 고정장치.Impregnated pellets characterized in that a hemispherical recessed groove is formed on the upper surface of the negative electrode sleeve to place a spherical pellet in the recessed groove, and then the upper surface of the negative electrode sleeve is bent inward so that the pellet is fixed in the negative electrode sleeve. Fixture. 제1항에 있어서, 구형상으로 된 펠렛의 상면에 절단면을 형성함을 특징으로 하는 함침형펠렛의 고정장치.2. An apparatus for fixing impregnated pellets according to claim 1, wherein a cut surface is formed on an upper surface of the pellet having a spherical shape.
KR1019940031313A 1994-11-26 1994-11-26 Fixing apparatus of impregnated type pellet KR0136474B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940031313A KR0136474B1 (en) 1994-11-26 1994-11-26 Fixing apparatus of impregnated type pellet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940031313A KR0136474B1 (en) 1994-11-26 1994-11-26 Fixing apparatus of impregnated type pellet

Publications (2)

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KR960019377A KR960019377A (en) 1996-06-17
KR0136474B1 true KR0136474B1 (en) 1998-09-15

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KR1019940031313A KR0136474B1 (en) 1994-11-26 1994-11-26 Fixing apparatus of impregnated type pellet

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000067670A (en) * 1999-04-30 2000-11-25 김순택 Electron gun with electron emission mean used in cathod ray tube

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KR960019377A (en) 1996-06-17

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