JPH0418409B2 - - Google Patents
Info
- Publication number
- JPH0418409B2 JPH0418409B2 JP55126763A JP12676380A JPH0418409B2 JP H0418409 B2 JPH0418409 B2 JP H0418409B2 JP 55126763 A JP55126763 A JP 55126763A JP 12676380 A JP12676380 A JP 12676380A JP H0418409 B2 JPH0418409 B2 JP H0418409B2
- Authority
- JP
- Japan
- Prior art keywords
- frame
- electrode member
- electrode
- jig
- color selection
- 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
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 description 20
- 239000000463 material Substances 0.000 description 8
- 238000000465 moulding Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- SNIOPGDIGTZGOP-UHFFFAOYSA-N Nitroglycerin Chemical compound [O-][N+](=O)OCC(O[N+]([O-])=O)CO[N+]([O-])=O SNIOPGDIGTZGOP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
- H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/07—Shadow masks
- H01J2229/0722—Frame
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Description
【発明の詳細な説明】
本発明はカラーブラウン管に於ける色選択電極
の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing color selection electrodes in color cathode ray tubes.
クロマトロン（登録商標）方式やトリニトロン
（登録商標）方式のカラーブラウン管では、周知
の如く、螢光面がストライプ状のパターンに構成
されている。この為、螢光面の手前に設けられる
色選択電極又は色切換電極として、螢光体ストラ
イプに対応した多数の互に平行なスリツトを有す
るものが用いられている。 As is well known, in Chromatron (registered trademark) type and Trinitron (registered trademark) type color cathode ray tubes, the fluorescent surface is structured in a striped pattern. For this reason, the color selection electrode or color switching electrode provided in front of the phosphor surface has a large number of mutually parallel slits corresponding to the phosphor stripes.
この従来の色選択電極を第１図に示す。色選択
電極は、中央部がスリツトに依つて多数の互に平
行な線状電極部に分割されている金属薄板から構
成された電極部材１と金属製の枠体２とから成つ
ている。枠体２は、所定の曲率に湾曲された互に
平行な一対の棒状体３と、両端部が略Ｌ字状に屈
曲された一対のコ字状部材４とから構成され、棒
状体３とコ字状部材４とは溶接に依り互に接続さ
れている。電極部材１は、この枠体２の一対の棒
状体３間に、スリツトの方向が棒状体３に対して
略直交するように架張されて取付けられる。 This conventional color selection electrode is shown in FIG. The color selection electrode consists of an electrode member 1 made of a thin metal plate whose central portion is divided into a number of mutually parallel linear electrode parts by slits, and a metal frame 2. The frame body 2 is composed of a pair of parallel rod-shaped bodies 3 that are curved to a predetermined curvature, and a pair of U-shaped members 4 that are bent into a substantially L-shape at both ends. They are mutually connected to the U-shaped member 4 by welding. The electrode member 1 is mounted between the pair of rod-like bodies 3 of the frame 2 so that the direction of the slit is substantially perpendicular to the rod-like bodies 3.
ところが、このように構成された従来の色選択
電極では、枠体２が電極部材１に依り矢印Ａ方向
の相当大きな張力を受けるので、この枠体２の変
形を避ける為に、この枠体２に高価ではあつても
強度の大きい材料（例えば、SCM−２１或いは
２２）を使用しなければならなかつた。更に、こ
の枠体２が４つの部材３，４を互に溶接して作ら
れている為、溶接の歪等に依りその精度が悪く、
又製造コストも高くなつていた。即ち、従来の色
選択電極は、特に枠体の材料費及び製造コストに
依り高価なものとなつていた。 However, in the conventional color selection electrode configured in this way, the frame 2 is subjected to a considerably large tension in the direction of arrow A due to the electrode member 1, so in order to avoid deformation of the frame 2, Therefore, an expensive but strong material (for example, SCM-21 or 22) had to be used. Furthermore, since this frame body 2 is made by welding four members 3 and 4 together, its accuracy is poor due to distortion of the welding, etc.
Furthermore, manufacturing costs have also increased. That is, conventional color selection electrodes are expensive, especially due to the material cost and manufacturing cost of the frame.
本発明はこのような実情に鑑みて為されたもの
であつて、その目的は、出来るだけ安価な材料を
使用した精度の良い色選択電極を安価な方法に依
り提供することである。 The present invention has been made in view of the above circumstances, and its purpose is to provide a highly accurate color selection electrode using materials as inexpensive as possible by an inexpensive method.
以下、本発明を一実施例に就き第２図〜第４図
を参照して説明する。 Hereinafter, the present invention will be described in accordance with one embodiment with reference to FIGS. 2 to 4.
第２図に示すように、本実施例では、プレス成
形に依り一体成形された枠体７を用いる。この枠
体７は、既述した電極部材１を架張する為のほゞ
矩形の中央開口部８を有しており、この中央開口
部８の内周部には補強の為のフランジ部９が一体
に設けられている。この枠体７の材料には安価な
SAPH−45を用いているが、このSAPH−45は耐
熱強度が小さい為に、特にプレス成形に依つて製
造した場合には、電極部材１の大きな張力に依つ
て枠体７が変形してしまう虞れがある。 As shown in FIG. 2, in this embodiment, a frame body 7 integrally formed by press molding is used. This frame body 7 has a substantially rectangular central opening 8 for stretching the electrode member 1 described above, and a flange portion 9 for reinforcement on the inner circumference of this central opening 8. are integrated. The material for this frame 7 is inexpensive.
SAPH-45 is used, but since this SAPH-45 has low heat resistance strength, the frame 7 will be deformed due to the large tension of the electrode member 1, especially when manufactured by press molding. There is a risk.
そこで、本実施例に於いては、この変形を防止
する為に、電極部材１を取付ける前に、この枠体
７に次のような熱処理を施す。 Therefore, in this embodiment, in order to prevent this deformation, the frame 7 is subjected to the following heat treatment before the electrode member 1 is attached.
即ち、第２図及び第３図に示すように、先ず、
プレス等に依り枠体７に矢印Ｂ方向の圧縮力を加
えてこの枠体７を変形させ、この状態で枠体７を
一対の治具１０に嵌め込んで固定する。この治具
１０は、図示の如く、ほゞコ字状に折曲して成形
された鉄材から成り、互に対向する両端部内側
に、アスベスト、マイカ、ヘミツト等から成る耐
熱性絶縁物１１が配されている。 That is, as shown in FIGS. 2 and 3, first,
A compressive force is applied to the frame body 7 in the direction of arrow B using a press or the like to deform the frame body 7, and in this state, the frame body 7 is fitted into a pair of jigs 10 and fixed. As shown in the figure, this jig 10 is made of iron material bent and formed into a U-shape, and a heat-resistant insulator 11 made of asbestos, mica, hemite, etc. is placed on the inside of both opposing ends. It is arranged.
圧縮力の方向Ｂは、枠体７が受ける電極部材１
の張力の方向（既述した矢印Ａ方向）、即ち電極
部材１のスリツト方向と一致させる。この圧縮力
に依つて、例えば、縦ｈが200mm、横ｗが240mmの
大きさの枠体７の場合、第３図に示すように、そ
の中央部での間隔l2及びこのl2から距離ｄ＝80mm
だけ離れた部分の間隔l1，l3を夫々Δl1＝Δl3＝1.3
mm、Δl2＝2.0mmだけ変形させ、この状態で枠体７
を治具１０の両端部間に嵌め込んで固定する。従
つて、この治具１０に依り枠体７は、上記のよう
に変形した状態に維持される。本実施例のよう
に、一体成形された枠体７を用いると、圧縮力を
加えた時に、枠体７がねじれ変形し難いので好都
合である。 The direction B of the compressive force is the direction in which the electrode member 1 is received by the frame 7.
(already-mentioned arrow A direction), that is, the slit direction of the electrode member 1. Depending on this compressive force, for example, in the case of a frame 7 with a length h of 200 mm and a width w of 240 mm, as shown in FIG. d=80mm
The intervals l 1 and l 3 of the parts separated by Δl 1 = Δl 3 = 1.3, respectively.
mm, Δl 2 = 2.0 mm, and in this state frame body 7
is fitted between both ends of the jig 10 and fixed. Therefore, the frame body 7 is maintained in the deformed state as described above by this jig 10. It is advantageous to use the integrally molded frame 7 as in this embodiment, since the frame 7 is difficult to twist and deform when compressive force is applied.
次いで、第３図に示すように、治具１０に嵌め
込まれた枠体７を高周波加熱コイル１２に依り加
熱する。加熱条件は、例えば枠体７の肉厚が4.5
mmの場合、100KHzの周波数を用いて約20秒間で
500〜550℃の温度迄昇温するのが好ましい。あま
り短時間で昇温すると、温度分布が不均一になる
虞れがある。この加熱によつて枠体７は膨張しよ
うとするが、治具１０は絶縁物１１に依り絶縁さ
れているのであまり加熱されず、従つて治具１０
は殆ど膨張しない。この為、加熱の間、枠体７は
治具１０からより大きな圧縮力を受けることにな
る。そして、この加熱処理に依り、枠体７が常温
迄冷却されて収縮した時に、前述したl1及びl3の
部分が2.4〜2.8mm、l2の部分が3.6〜4.0mmだけ初期
状態から短くなつているようにする。従つて、既
述した枠体７のプレス成形は、予めこれらの変形
量を考慮に入れた上で行なう。 Next, as shown in FIG. 3, the frame 7 fitted into the jig 10 is heated by the high frequency heating coil 12. For example, the heating condition is that the wall thickness of the frame 7 is 4.5 mm.
mm, in about 20 seconds using a frequency of 100KHz.
Preferably, the temperature is raised to a temperature of 500-550°C. If the temperature is increased in too short a time, there is a risk that the temperature distribution will become non-uniform. The frame 7 tends to expand due to this heating, but since the jig 10 is insulated by the insulator 11, it is not heated much, so the jig 10
hardly expands. Therefore, the frame body 7 receives a larger compressive force from the jig 10 during heating. Due to this heat treatment, when the frame 7 is cooled to room temperature and shrinks, the aforementioned l1 and l3 portions will be shortened by 2.4 to 2.8 mm, and the l2 portion will be shortened by 3.6 to 4.0 mm from the initial state. Make it look familiar. Therefore, the above-mentioned press forming of the frame body 7 is performed after taking these deformation amounts into consideration in advance.
第４図に、このような熱処理を施した例(a)と施
さなかつた列(b)とを比較して示す。但し、縦軸は
電極部材を取付けた時のこの電極部材の張力、横
軸は枠体の中央部から端部迄の距離を夫々示す。
この第４図から分るように、本実施例に依る熱処
理を施した枠体(a)では、施さなかつたもの(b)に比
較して、電極部材の張力が約20％程向上してい
る。このことから、本実施例の熱処理に依り枠体
が変形し難くなつてその強度が改善されることが
分る。しかも、この張力の向上は、枠体の端部に
近い程大きくなつている。一般に、枠体の端部付
近に於いては、電極と螢光面との距離が大きくな
る為、電極の位置ずれに依る電子ビームのミスラ
ンデイングが起り易い。従つて、上述した枠体の
端部付近に於ける張力の向上は、電極の位置ずれ
を規制して電子ビームのミスランデイングを防止
するのに非常に効果的である。 FIG. 4 shows a comparison between an example (a) in which such heat treatment was applied and a row (b) in which no heat treatment was applied. However, the vertical axis indicates the tension of the electrode member when it is attached, and the horizontal axis indicates the distance from the center to the end of the frame.
As can be seen from FIG. 4, the tension of the electrode member in the frame (a) that was subjected to the heat treatment according to this example was improved by about 20% compared to the frame (b) that was not subjected to the heat treatment. There is. This shows that the heat treatment of this example makes the frame less likely to deform and improves its strength. Furthermore, this improvement in tension becomes greater as the distance from the end of the frame increases. Generally, near the end of the frame, the distance between the electrode and the fluorescent surface is large, so mislanding of the electron beam is likely to occur due to positional deviation of the electrode. Therefore, increasing the tension near the ends of the frame as described above is very effective in regulating the positional displacement of the electrodes and preventing mislanding of the electron beam.
上述の実施例に用いた高周波加熱は、治具１０
を加熱しないので、圧縮力を加えながら枠体を加
熱する本発明の実施に非常に有効であるが、勿
論、本発明には、他の加熱手段、例えば電気炉加
熱やバーナに依る加熱等を用いることも出来る。
この場合には、治具との熱膨張係数の違いを利用
するか、或いは、外部からプレス等に依り圧縮力
を加えるようにすると良い。又、枠体の材料とし
ては、安価な低Mn鋼やSPC等を用いることも出
来る。更に、電極部材として多数の線状電極を用
いても良い。 The high frequency heating used in the above-mentioned example was performed using the jig 10.
This is very effective in carrying out the present invention, which heats the frame while applying compressive force. However, the present invention also includes other heating means, such as electric furnace heating, heating using a burner, etc. It can also be used.
In this case, it is preferable to utilize the difference in thermal expansion coefficient between the jig and the jig, or to apply compressive force from the outside using a press or the like. Furthermore, inexpensive low-Mn steel, SPC, etc. can also be used as the material for the frame. Furthermore, a large number of linear electrodes may be used as the electrode member.
以上説明したように、本発明に於いては、電極
部材のスリツト方向と平行な方向の圧縮力を枠体
に加えながらこの枠体を熱処理し、その後に前記
枠体に電極部材を取付けるようにしている。従つ
て、上記圧縮力を枠体に加えることにより枠体が
永久歪を起こす恐れがなく、また、枠体に取付け
られる電極部材の張力が熱処理により変化する恐
れがないにもかかわらず、枠体の強度を大巾に改
善することができ、このために、枠体に強度の低
い安価な材料を使用することができる。又、プレ
ス成形に依り一体成形された枠体を用いることが
出来るので、その製造コストを低く、しかも精度
を良くすることができる。即ち、本発明に依れ
ば、枠体に安価な材料を用いることが出来、その
製造コストも低くて済むので、得られる色選択電
極のコストを下げることが出来る。更に、枠体の
肉厚を薄くして軽量化を図ることも可能である。 As explained above, in the present invention, the frame is heat-treated while applying a compressive force in a direction parallel to the slit direction of the electrode member, and then the electrode member is attached to the frame. ing. Therefore, even though there is no risk of permanent deformation of the frame by applying the above-mentioned compressive force to the frame, and there is no risk of the tension of the electrode member attached to the frame changing due to heat treatment, the frame The strength of the frame can be greatly improved, and for this purpose, low-strength and inexpensive materials can be used for the frame. Furthermore, since a frame integrally formed by press molding can be used, the manufacturing cost can be lowered and accuracy can be improved. That is, according to the present invention, an inexpensive material can be used for the frame and its manufacturing cost can be low, so the cost of the resulting color selection electrode can be reduced. Furthermore, it is also possible to reduce the weight of the frame by reducing its thickness.
第１図は従来の色選択電極を示す分解斜視図で
ある。第２図は本発明の一実施例に依る色選択電
極の製造方法を示す枠体の斜視図、第３図は上記
枠体の加熱方法を示す概略平面図、第４図は上記
実施例に依る加熱処理を施した枠体と施さない枠
体との強度を比較して示すグラフである。
尚図面に用いた符号に於いて、１……電極部
材、７……枠体、１０……治具、１２……高周波
加熱コイルである。
FIG. 1 is an exploded perspective view showing a conventional color selection electrode. FIG. 2 is a perspective view of a frame showing a method of manufacturing a color selection electrode according to an embodiment of the present invention, FIG. 3 is a schematic plan view showing a method of heating the frame, and FIG. It is a graph showing a comparison of the strength of a frame body subjected to the heat treatment and a frame body not subjected to the heat treatment. In the symbols used in the drawings, 1... electrode member, 7... frame body, 10... jig, 12... high frequency heating coil.
Claims (1)
リツトに依り分割されている電極部材を枠体に架
張して取付けるようにした色選択電極の製造方法
に於いて、一体成形された前記枠体に前記電極部
材を取付ける前に、前記電極部材のスリツト方向
と平行な方向の圧縮力を前記枠体に加えながらこ
の枠体を熱処理することを特徴とする方法。1. A method for manufacturing a color selection electrode, in which an electrode member, at least in its center portion, is divided by a number of mutually parallel slits is stretched and attached to a frame, and the frame is integrally molded. A method characterized in that, before attaching the electrode member to the frame, the frame is heat-treated while applying a compressive force to the frame in a direction parallel to the slit direction of the electrode member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12676380A JPS5750739A (en) | 1980-09-12 | 1980-09-12 | Manufacture of color selection electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12676380A JPS5750739A (en) | 1980-09-12 | 1980-09-12 | Manufacture of color selection electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5750739A JPS5750739A (en) | 1982-03-25 |
| JPH0418409B2 true JPH0418409B2 (en) | 1992-03-27 |
Family
ID=14943313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12676380A Granted JPS5750739A (en) | 1980-09-12 | 1980-09-12 | Manufacture of color selection electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5750739A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2785201B2 (en) * | 1989-04-18 | 1998-08-13 | ソニー株式会社 | Color selection electrode and its manufacturing method |
| JP3271214B2 (en) * | 1993-09-27 | 2002-04-02 | ソニー株式会社 | Electron frame for color selection of cathode ray tube and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4827636U (en) * | 1971-08-03 | 1973-04-03 |
-
1980
- 1980-09-12 JP JP12676380A patent/JPS5750739A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4827636U (en) * | 1971-08-03 | 1973-04-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5750739A (en) | 1982-03-25 |
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