CN1160281A - Method of manufacturing electron gun for cathode ray tube and cathode assembly - Google Patents
Method of manufacturing electron gun for cathode ray tube and cathode assembly Download PDFInfo
- Publication number
- CN1160281A CN1160281A CN 97101873 CN97101873A CN1160281A CN 1160281 A CN1160281 A CN 1160281A CN 97101873 CN97101873 CN 97101873 CN 97101873 A CN97101873 A CN 97101873A CN 1160281 A CN1160281 A CN 1160281A
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- China
- Prior art keywords
- strutting piece
- grid
- piece
- cathode
- distance
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- 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.)
- Pending
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/18—Assembling together the component parts of electrode systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/485—Construction of the gun or of parts thereof
Abstract
The invention relates to a manufacture method of electronic gun for CRT with cathode and a plurality of grids, which comprises the following steps: a first support part, a second support part and a third support part are assembled to form a whole using insulation materials, a first grid is arranged fixedly on the first support part, so that the first grid is aligned with the second support part, a partition part is arranged fixedly on the second support part, the partition part limits the gap between the first grid and the second grid, so that the first grid is aligned with the third support part and the cathode is arranged fixedly on the third support part.
Description
The present invention relates to the manufacture method of the electron gun and the cathode assembly of cathode ray tube, in the method, the distance piece that negative electrode, first grid and second grid are used is assembled into one in advance.
Summarize an example of the existing electron gun of cathode ray tube below with reference to Fig. 2.Electron gun shown in this figure is single rifle three beams formula (Trinitron type) electron gun that cooperates with color cathode ray tube, for example discloses flat 5-166459 by Japan Patent and discloses.This electron gun comprises negative electrode, first grid and is used for three cathode assemblies 100 that the distance piece of second grid is fixed as one.This electron gun also comprises second to the 5th grid G 2～G5.By heeling condition three cathode assemblies 100 are assembled by distance piece and second grid G2, second grid G2 and the 3rd to the 5th grid G 3～G5 are interfixed, be assembled into single rifle three beams formula electron gun with glass pole (bead glass) 101.First and second grid G 1, G2 constitute the prefocus system, third and fourth, five grid G 3, G4, G5 constitute main lens system.
Fig. 3 illustrates an example of cathode assembly 100, and is for example disclosed by the open 7-14508 of Japan Patent.Cathode assembly comprises first grid G1; By insulating material make, the fixing strutting piece 110 of first grid G1; Be arranged at strutting piece 110 on, the negative electrode 111 relative with first grid G1.First grid G1 makes by for example cutting down material, and strutting piece 110 is made by aluminium oxide ceramics.On the side that first grid G1 is installed on the strutting piece 110, a distance piece 112 is installed.The upper surface 112a that second grid G2 is installed in distance piece 112 goes up (referring to Fig. 2).The distance that distance piece 112 is determined between first grid G1 and the second grid G2.Negative electrode 111 comprises cylindrical sleeve 120, place the cathode cap 122 on sleeve 120 front ends and be arranged on cathode cap 122 tops, as the oxide 124 of electron emission source.The negative electrode 111 of this configuration is inserted in the sleeve support 128 that is contained on strutting piece 110 lower surfaces.Heater 126 places sleeve 120 inside.
Summarize the assemble method of cathode assembly 100 below with reference to Fig. 4.At first prepare brazing jig 140, it has first 140b and second 140c.Some 140a place on first 140b of brazing jig 140.Form second 140c outside first 140b, it is in the state that is lower than first 140b.First 140b and step between second 140c be set to first grid G1 and second grid G2 between equate apart from d12.First grid G1 and distance piece 112 are assemblied on the side of the strutting piece of being made by insulating material 110, and the negative electrode (not shown) places on the opposite side of strutting piece 110.Specifically, first grid G1 is placed on first 140b of brazing jig 140, is inserted on the axle 140a of brazing jig 140, by metal for example the distance piece 112 made of Fe-Ni alloy or Fe-Co-Ni alloy be arranged on second 140C of anchor clamps 140.Then, on first grid G1 and distance piece 112, place strutting piece 110, the plane 110b of strutting piece 110 is contacted with distance piece 112 with first grid G1.In addition, in advance plane 110b is metallized.The first grid G1 heart therein has launch hole E, and strutting piece 110 has through hole 110a (referring to Fig. 3) corresponding to launch hole E.With casting die 140d strutting piece 110 is pressed on anchor clamps 140 sides,, first grid G1 and distance piece 112 is fixed on the plane of strutting piece 110 with method for brazing by this state.Thereby, the opposite face of first grid G1 and strutting piece 110 and distance piece 112 with the opposite face of strutting piece 110 mutual soldering be in the same place.
In existing assembly method, with method for brazing first grid G1, distance piece 112 and cathode branch support member 128 are fixed on the strutting piece of being made by pottery etc. 110, be assembled into cathode assembly; After the distance of measuring with air micrometer etc. between first grid G1 and the negative electrode 111, cathode sleeve 120 is inserted in the cathode assemblies, it is welded together.The advantage of this method is because before cathode sleeve 120 is fixed on cathode assembly, with brazing jig preestablished between first grid G1 and the second grid G2 apart from d1, thereby can accurately assemble these parts., the shortcoming of this method is and since brazing jig 140 must have the size of pinpoint accuracy and thermal deformation resistant high-fire resistance and must be by high accuracy manufacturing with strutting piece 110 preparations such as pottery, that fix these parts, thereby assembly cost height.For overcoming such shortcoming, another kind of method has been proposed, promptly use the glass securing part, reduce assembly cost thus.But this kind method has following shortcoming: the precision of assembling is lower than the precision with the soldering assembling, makes operation thereafter be difficult to operation.
The manufacture method that the purpose of this invention is to provide a kind of electron gun of cathode ray tube, this method can reduce manufacturing cost and guarantee assembly precision simultaneously; The present invention also provides a kind of cathode assembly that is applicable to electron gun.
For achieving the above object, according to first scheme of the present invention, provide a kind of manufacture method of electron gun of the cathode ray tube that negative electrode and a plurality of grids are arranged, it comprises the following steps: with insulating material first, second and the 3rd strutting piece to be assembled into one; First grid is fixed on first strutting piece; First grid is alignd with second strutting piece; Distance piece is fixed on second strutting piece, and this distance piece limits the spacing between first and second grid; First grid is alignd with the 3rd strutting piece; With negative electrode is fixed on the 3rd strutting piece.Preferably this installation step also comprises and makes second strutting piece that is made of becket, constitute by metal cylinder, place the 3rd strutting piece in second strutting piece, and constitute by the pair of metal bar, place first strutting piece air-tightness sealing-in between the second and the 3rd strutting piece, it is interfixed.
For achieving the above object,, provide a kind of cathode assembly of electron gun of the cathode ray tube that negative electrode and a plurality of grids are arranged, comprise the negative electrode of emitting electrons according to alternative plan of the present invention; Limit the distance piece of spacing between first grid and the second grid; Fixing first strutting piece of first grid; Second strutting piece of fixation spacers; The 3rd strutting piece with fixed negative pole; It is characterized in that first, second and the 3rd strutting piece fitted to be one.Best, second strutting piece that constitutes by becket, constitute by metal cylinder, place the 3rd strutting piece in second strutting piece, and constitute by the pair of metal bar, place first strutting piece between the second and the 3rd strutting piece it to be interfixed with the air-tightness sealing-in.
According to the method described above, by the strutting piece with air-tightness sealing-in fixed support negative electrode, supporting the strutting piece of first grid and the strutting piece of support distance piece is one, obtains basic component; With anchor clamps first grid and distance piece are accurately located to basic component, and they are fixed with welding; Accurately adjust the distance between negative electrode and the first grid, negative electrode is fixed on the corresponding strutting piece with welding.Cathode assembly is assemblied in the electron gun of cathode ray tube.Therefore, the advantage of this method is accurately to be provided with distance between negative electrode and first grid and the distance between first grid and the second grid.
In conjunction with the drawings to the detailed description of the preferred embodiment of the present invention, will understand above-mentioned and other purpose, feature and advantage of the present invention, wherein:
Figure 1A～1D is the sketch of displaying by the processing step in the manufacture method of the electron gun of cathode ray tube of the present invention;
Fig. 2 is the block diagram of an example of electron gun of showing the relevant technologies of cathode-ray tube;
Fig. 3 is the representative section figure of a correlation technique example of cathode assembly of the electron gun of cathode-ray tube;
Fig. 4 is the exemplary view of showing the manufacture method of cathode ray tube shown in Figure 3.
Below, describe one embodiment of the invention with reference to the accompanying drawings.
Figure 1A～1D is the sketch of processing step of showing the manufacture method of CRT electrom gun of the present invention.Shown in Figure 1A, locate mutually with second strutting piece 2 of determining distance between first grid and the second grid and the 3rd strutting piece 3 that fixed negative pole is used by first strutting piece 1, fixation spacers that lower precision is used fixing first grid, and make them become integral body mutually, so form basic component 4 with insulating material 5.Specifically, second strutting piece 2 that will constitute by becket with air-tightness welding, constitute by metal cylinder, place the 3rd strutting piece 3 in second strutting piece 2, and constitute by the pair of metal bar, place first strutting piece 1 between second strutting piece 2 and the 3rd strutting piece 3 to interfix to be one.Here, with devitrified glass as insulating material 5.Note that the present invention is not limited to said structure, other choice structure that welds without air-tightness also can use.For example, can replace insulating material 5 that the air-tightness sealing-in uses and each strutting piece is fixed on the insulating material 5 with ceramic part with glass.With prior art with method for brazing parts are accurately located mutually with fixing method to compare, the present invention is by configuration like this, promptly with air-tightness sealing-in etc. by the lower precision strutting piece used of fixed support parts only, formation basic component 4.
Then, shown in Figure 1B, first grid 6 is assemblied on a pair of first strutting piece 1 with welding etc.First grid 6 forms cup-shaped, can hold the top of the 3rd strutting piece, and the heart has launch hole 7 therein.
Shown in Fig. 1 C, a pair of distance piece 8 is contained on second strutting piece 2 of basic component 4, this distance piece 8 and the first grid 6 that is pre-installed on first strutting piece 1 are accurately located.Here, before being welded in a pair of distance piece 8 on second strutting piece 2, the distance between the upper surface 10 of the upper surface 9 of first grid 6 and each distance piece 8 is set accurately with anchor clamps.In step subsequently, second grid will be installed on the upper surface of distance piece 8.Distance between the upper surface 9 of first grid 6 and the upper surface 10 of each distance piece 8 define between first and second grid apart from d12.Must accurately control this apart from d12.So obtained first grid and the distance piece that is used for second grid are constituted whole cathode assembly 11.
Shown in Fig. 1 D, negative electrode 12 is contained on the 3rd strutting piece 3 of basic component 4, it is accurately aimed at first grid 6.This negative electrode 12 comprises cylindrical sleeve 13, place the cathode cap 14 on sleeve 13 front ends and be configured on the cathode cap top, as the oxide 15 of electron emission source.Sleeve 13 inserts in the 3rd strutting piece 3.Cylindrical sleeve 13 has diameter to be a bit larger tham the bottom of front end.Utilize the CONTACT WITH FRICTION between the inner circumferential surface of sleeve 13 external peripheral surfaces and the 3rd strutting piece 3, sleeve 13 temporarily is contained in the 3rd strutting piece 3.After this, with air micrometer etc. measure between oxide 15 and the first grid 6 apart from d01, and carry out suitable adjustment.In addition, send into air by 7 pairs of oxides of launch hole, 15 pressurizations that form in the first grid 6, and measure the pressure that returns from oxide 15, can finish work with micrometer measuring distance d01.Regulate exactly after the distance of 6 of oxide 15 and first grids, sleeve 13 is welded on the 3rd strutting piece 3.
The cathode assembly 11 that assembles at last is contained on the second grid by distance piece 8.After this, as shown in Figure 2, with strut fixation second grid G2, the 3rd grid G 3, the 4th grid G 5, the 5th grid G 5 etc., the electron gun of cathode ray tube is finished in assembling.
As mentioned above, according to the present invention, fixedly first strutting piece used of first grid, second strutting piece of distance piece that is fixed for limiting spacing between first and second grid and the 3rd strutting piece that fixed negative pole is used are located mutually by lower precision, and make them become an integral body, so form basic component with the air-tightness sealing-in; With by high accuracy first grid, distance piece and negative electrode are assemblied on the corresponding support of basic component.Therefore, can be easily with distance piece and accurately be provided with between first grid and the second grid apart from d12.Owing to the strutting piece that is made of metal, have different shape can be fixed together easily with air-tightness sealing-in etc., so the present invention has superiority aspect manufacturing cost.In addition, for the first grid launch hole diameter electron gun different with the d12 value is set, only change the first grid parts and the distance piece assembling jig just can easily make.
Although described the preferred embodiments of the present invention with concrete form, these descriptions only are for illustrative purposes, should be appreciated that, can improve and revise the present invention, and can not break away from the essence and the scope of claims.
Claims (4)
1, a kind of manufacture method of electron gun of the cathode ray tube that has negative electrode and a plurality of grids comprises the following steps:
With insulating material first, second and the 3rd strutting piece are assembled into one;
First grid is fixed on one first strutting piece;
Make the first grid and the second strutting piece contraposition;
One distance piece is fixed on second strutting piece, and this distance piece limits the spacing between first and second grid;
Make first grid and the 3rd strutting piece contraposition; With
Negative electrode is fixed on the 3rd strutting piece.
2, the method for claim 1, wherein installation step comprises:
Make second strutting piece that constitutes by becket with the air-tightness sealing-in, constitute by metal cylinder, place the 3rd strutting piece in second strutting piece, and constitute by the pair of metal bar, place first strutting piece between the second and the 3rd strutting piece to interfix.
3, a kind of cathode assembly of electron gun of the cathode ray tube that negative electrode and a plurality of grids are arranged comprises:
The negative electrode of emitting electrons;
Limit the distance piece of spacing between first grid and the second grid;
Fixing first strutting piece of first grid;
Second strutting piece of fixation spacers; With
The 3rd strutting piece of fixed negative pole;
Wherein first, second fitted to be one with the 3rd strutting piece.
4, cathode assembly as claimed in claim 3, wherein make second strutting piece that constitutes by becket with the air-tightness sealing-in, constitute by metallic cylinder, place the 3rd strutting piece in second strutting piece, and constitute by the pair of metal bar, place first strutting piece between the second and the 3rd strutting piece to interfix.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2578696A JPH09199019A (en) | 1996-01-19 | 1996-01-19 | Assembly method of electron gun for cathode-ray tube and cathode structure |
| JP025786/96 | 1996-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1160281A true CN1160281A (en) | 1997-09-24 |
Family
ID=12175524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97101873 Pending CN1160281A (en) | 1996-01-19 | 1997-01-19 | Method of manufacturing electron gun for cathode ray tube and cathode assembly |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH09199019A (en) |
| CN (1) | CN1160281A (en) |
| GB (1) | GB2309333B (en) |
| SG (1) | SG81910A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715986A (en) * | 2013-12-11 | 2015-06-17 | 中国航空工业第六一八研究所 | Suspension-type multi-claw grid combination and assembling method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100310684B1 (en) * | 1999-09-08 | 2001-10-18 | 김순택 | Apparatus for supporting a metal cathode and a cap of electron gun |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB707064A (en) * | 1951-04-03 | 1954-04-14 | Emi Ltd | Improvements relating to electrode assemblies for cathode ray tubes |
| GB2046511B (en) * | 1979-04-09 | 1983-04-20 | Tektronix Inc | Electron gun having a low capacitance cathode and grid assembly |
| US4633130A (en) * | 1985-05-17 | 1986-12-30 | Rca Corporation | Multibeam electron gun having a transition member and method for assembling the electron gun |
| JPH06103622B2 (en) * | 1986-08-21 | 1994-12-14 | ソニー株式会社 | Electron gun assembly method |
| US5028838A (en) * | 1989-08-31 | 1991-07-02 | Askew Dennis D | Grid assemblies for use in cathode ray tubes |
| US5221875A (en) * | 1992-05-12 | 1993-06-22 | Tektronix, Inc. | High resolution cathode-ray tube with high bandwidth capability |
| JP3189388B2 (en) * | 1992-05-22 | 2001-07-16 | ソニー株式会社 | Cathode structure of cathode ray tube |
| JP3189510B2 (en) * | 1993-06-25 | 2001-07-16 | ソニー株式会社 | Assembling method of electron gun cathode structure |
| JPH0729490A (en) * | 1993-07-15 | 1995-01-31 | Sony Corp | Manufacture of cathode structure body for electron gun, and cathode for electron gun |
| JPH0794086A (en) * | 1993-09-22 | 1995-04-07 | Hitachi Ltd | Method for assembling electron gun for cathode-ray tube |
-
1996
- 1996-01-19 JP JP2578696A patent/JPH09199019A/en active Pending
-
1997
- 1997-01-14 SG SG9700073A patent/SG81910A1/en unknown
- 1997-01-16 GB GB9700812A patent/GB2309333B/en not_active Expired - Fee Related
- 1997-01-19 CN CN 97101873 patent/CN1160281A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715986A (en) * | 2013-12-11 | 2015-06-17 | 中国航空工业第六一八研究所 | Suspension-type multi-claw grid combination and assembling method thereof |
| CN104715986B (en) * | 2013-12-11 | 2017-02-22 | 中国航空工业第六一八研究所 | Suspension-type multi-claw grid combination and assembling method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2309333B (en) | 2000-11-08 |
| GB9700812D0 (en) | 1997-03-05 |
| GB2309333A (en) | 1997-07-23 |
| JPH09199019A (en) | 1997-07-31 |
| SG81910A1 (en) | 2001-07-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |