JPH11201302A - Fitting structure of valve casing seat in eccentric valve - Google Patents
Fitting structure of valve casing seat in eccentric valveInfo
- Publication number
- JPH11201302A JPH11201302A JP403198A JP403198A JPH11201302A JP H11201302 A JPH11201302 A JP H11201302A JP 403198 A JP403198 A JP 403198A JP 403198 A JP403198 A JP 403198A JP H11201302 A JPH11201302 A JP H11201302A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve box
- stop ring
- valve casing
- fitting groove
- 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.)
- Withdrawn
Links
Landscapes
- Lift Valve (AREA)
- Taps Or Cocks (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は偏心構造弁に係り、
さらに詳しくは生産性と組立性および弁箱シートの保守
・点検時や交換時などの作業性が向上するように工夫し
た偏心構造弁における弁箱シートの取付け構造に関す
る。TECHNICAL FIELD The present invention relates to an eccentric valve.
More specifically, the present invention relates to a valve box seat mounting structure for an eccentric valve designed to improve productivity, assemblability, and workability during maintenance / inspection and replacement of a valve box sheet.
【０００２】[0002]
【従来の技術】この種、従来の偏心構造弁における弁箱
シートの取付け構造は、図３に示すように、弁箱１の軸
線Ｃ１に交差する軸線Ｃ２上で上下に分離された上弁棒
２と下弁棒３を有し、上弁棒２に上側基部４が固定さ
れ、かつ下弁棒３に下側基部５が固定されて、上弁棒２
と下弁棒３に偏心して弁体６が取付けられ、弁箱１の上
部開口１Ａを開放可能に閉塞する蓋体１Ｂに設けられた
上側弁棒支持部７に上弁棒２が軸まわりに回転自在に支
持されているとともに、弁箱１の下部に設けられた下側
弁棒支持部８に下弁棒３が軸まわりに回転自在に支持さ
れ、手動もしくは自動により上弁棒２を軸まわりの正逆
方向に回転させることで、弁体６が弁箱シート９に接離
して弁口部１０を開閉するように構成されている。2. Description of the Related Art As shown in FIG. 3, a valve body seat mounting structure of a conventional eccentric valve has an upper valve stem vertically separated on an axis C2 intersecting the axis C1 of the valve box 1. As shown in FIG. 2 and the lower valve stem 3, the upper base 4 is fixed to the upper valve stem 2, and the lower base 5 is fixed to the lower valve stem 3.
The valve body 6 is mounted eccentrically to the lower valve stem 3, and the upper valve stem 2 is mounted around an axis on an upper valve stem supporting portion 7 provided on a lid 1 </ b> B that removably closes an upper opening 1 </ b> A of the valve box 1. The lower valve rod 3 is rotatably supported, and the lower valve rod 3 is rotatably supported around a shaft by a lower valve rod supporting portion 8 provided at a lower portion of the valve box 1. By rotating the valve body 6 in the forward and reverse directions, the valve body 6 comes into contact with and separates from the valve box sheet 9 to open and close the valve port portion 10.
【０００３】上側弁棒支持部７はブシュ７Ａと複数のゴ
ム製シールリング７Ｂなどを備えた軸封構造になってお
り、下側弁棒支持部８はブシュ８Ａとゴム製シールリン
グ８Ｂなどを備えた軸封構造になっている。ところで、
偏心構造弁は、付設配管より本体部（弁箱１）を取外す
ことなく、保守・点検を可能に構成することが義務付け
られている。このため、弁体６は蓋体１Ｂの施蓋に併せ
て上部開口１Ａから弁箱１の内部に装入し、蓋体１Ｂの
取外しに追従して上部開口１Ａから弁箱１の外部に取出
すことができるように構成されている。また、弁箱シー
ト９は、上部開口１Ａから弁箱１の内部に装入したの
ち、外周に形成した雄ねじ部９Ａを弁箱１側に形成した
雌ねじ部１１に螺合することによって弁箱１に取付け、
雄ねじ部９Ａと雌ねじ部１１との螺合を解いたのち、上
部開口１Ａから弁箱１の外部に取出すことができるよう
に構成されている。The upper valve stem supporting portion 7 has a shaft sealing structure including a bush 7A and a plurality of rubber seal rings 7B, and the lower valve stem supporting portion 8 includes a bush 8A and a rubber seal ring 8B. It has a shaft seal structure. by the way,
The eccentric structure valve is required to be configured so that maintenance and inspection can be performed without removing the main body (valve box 1) from the attached piping. For this reason, the valve body 6 is inserted into the inside of the valve box 1 from the upper opening 1A along with the cover of the lid 1B, and is taken out of the valve box 1 from the upper opening 1A following the removal of the lid 1B. It is configured to be able to. After the valve box sheet 9 is inserted into the valve box 1 from the upper opening 1A, the male screw section 9A formed on the outer periphery is screwed into the female screw section 11 formed on the valve box 1 side, so that the valve box 1 is formed. Attached to
After the male screw portion 9A and the female screw portion 11 are unscrewed, they can be taken out of the valve box 1 from the upper opening 1A.
【０００４】しかし、螺合によって弁箱シート９が着脱
可能に弁箱１の内部に取付けられている従来の弁箱シー
トの取付け構造では、弁箱シート９に対する雄ねじ部９
Ａの加工や弁箱１に対する雌ねじ部１１の加工などの煩
わしい作業を必要とするため生産性に劣る欠点がある。
また、弁箱シート９のの取付けには、専用の工具を用い
て弁箱シート９を複数回軸まわりに回転させる煩わしい
作業を必要とするので組立性に劣るとともに、弁箱シー
ト９の保守・点検時や交換時においては、専用の工具を
用いて弁箱シート９を複数回軸まわりに逆回転させる煩
わしい作業を必要とするので、保守・点検時や交換時な
どの作業性も劣る欠点を有している。However, in a conventional valve box seat mounting structure in which the valve box sheet 9 is detachably mounted inside the valve box 1 by screwing, the male screw portion 9 for the valve box sheet 9 is provided.
A troublesome work such as the processing of A and the processing of the female thread portion 11 on the valve box 1 is required, so that there is a disadvantage that productivity is poor.
In addition, the installation of the valve box sheet 9 requires a troublesome operation of rotating the valve box sheet 9 around the axis a plurality of times using a dedicated tool, so that the assemblability is poor, and the maintenance and maintenance of the valve box sheet 9 are not performed. At the time of inspection or replacement, it is necessary to perform a troublesome work of rotating the valve box sheet 9 around the axis a plurality of times using a special tool, so that the workability at the time of maintenance, inspection, replacement and the like is inferior. Have.
【０００５】[0005]
【発明が解決しようとする課題】すなわち、従来の偏心
構造弁における弁箱シートの取付け構造では、弁箱シー
トに対する雄ねじ部および弁箱に対する雌ねじ部の加工
などの煩わしい作業が必要であるため生産性に劣るとと
もに、弁箱シート組立性および保守・点検時や交換時な
どの作業性に劣欠点を有している。そこで、本発明は、
弁箱シートに対する雄ねじ部および弁箱に対する雌ねじ
部の加工などの煩わしい作業を不要にして生産性を向上
させるとともに、弁箱シートの取付けを容易にして組立
性を向上させ、かつ保守・点検時や交換時などの作業性
の向上を図ることができる偏心構造弁における弁箱シー
トの取付け構造を提供することを目的としている。That is, in the conventional mounting structure of the valve box sheet in the eccentric structure valve, it is necessary to perform a troublesome operation such as machining a male screw portion for the valve box sheet and a female screw portion for the valve box, thereby increasing productivity. In addition, it has inferior drawbacks in valve box seat assemblability and workability during maintenance / inspection and replacement. Therefore, the present invention
This eliminates the need for complicated operations such as machining of the external thread on the valve box sheet and the internal thread on the valve box, thereby improving productivity, and facilitating the mounting of the valve box sheet to improve assemblability. An object of the present invention is to provide a mounting structure of a valve box seat in an eccentric structure valve capable of improving workability at the time of replacement or the like.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成するため
に、本発明に係る偏心構造弁における弁箱シートの取付
け構造は、弁箱の軸線に交差する軸線を有する弁棒と、
この弁棒に偏心して取付けられた弁体とを備え、前記弁
箱の上部開口を開放可能に閉塞する蓋体に設けられた上
側弁棒支持部に前記弁棒が軸まわりに回転自在に支持さ
れているとともに、前記弁箱側に設けられた下側弁棒支
持部に前記弁棒が軸まわりに回転自在に支持され、前記
弁棒の軸まわりの正逆方向の回転により前記弁体が弁口
部内側の弁箱シートに接離して該弁口部を開閉するよう
に構成された偏心構造弁において、前記弁箱シートが前
記弁口部内側の大径部に脱抜可能に嵌合されているとと
もに、該大径部の周壁に止め輪嵌合溝が設けられ、この
止め輪嵌合溝に着脱可能に嵌合した止め輪と前記弁口部
と大径部との段差面の両者で、前記弁箱シートの軸方向
両端面を挟み付けて該弁箱シートが弁箱に取付けられて
いることを特徴としている。In order to achieve the above object, the mounting structure of the valve box seat in the eccentric structure valve according to the present invention comprises: a valve stem having an axis intersecting the axis of the valve box;
A valve body eccentrically mounted on the valve stem, wherein the valve stem is rotatably supported about an axis on an upper valve stem support portion provided on a lid body that removably closes an upper opening of the valve box. The valve stem is rotatably supported around an axis by a lower valve stem supporting portion provided on the valve box side, and the valve body is rotated by forward and reverse rotation around the axis of the valve stem. In an eccentric structure valve configured to open and close the valve port portion by coming into contact with and separating from the valve box sheet inside the valve port portion, the valve box sheet is detachably fitted to the large diameter portion inside the valve port portion. And a retaining ring fitting groove is provided on a peripheral wall of the large diameter portion, and a stepped surface of the retaining ring removably fitted in the retaining ring fitting groove and the valve opening portion and the large diameter portion are formed. In both cases, the valve box sheet is attached to the valve box with both axial end faces of the valve box sheet sandwiched therebetween. To have.
【０００７】本発明によれば、弁箱シートを上部開口か
ら弁箱の内部に装入して、大径部に嵌合したのち、止め
輪を止め輪嵌合溝に嵌合することで、この止め輪と弁箱
の弁口部と大径部との段差面の両者で、弁箱シートの軸
方向両端面を挟み付けた弁箱シートの取付け状態を得る
ことができる。一方、専用の工具を上部開口から弁箱内
に挿入し、この専用の工具を用いて止め輪を止め輪嵌合
溝から離脱させることで、弁箱シートを大径部から脱抜
させることができる。According to the present invention, the valve case sheet is inserted into the valve case through the upper opening, fitted into the large diameter portion, and then the retaining ring is fitted into the retaining ring fitting groove. With both the retaining ring and the step surface between the valve opening portion and the large diameter portion of the valve box, it is possible to obtain a mounted state of the valve box sheet sandwiching both axial end surfaces of the valve box sheet. On the other hand, by inserting a special tool into the valve box through the upper opening and using this special tool to remove the retaining ring from the retaining ring fitting groove, the valve box sheet can be removed from the large diameter portion. it can.
【０００８】[0008]
【発明の実施の形態】以下、本発明の一実施の形態を図
面に基づいて説明する。図１は本発明を示す縦断面図で
ある。なお、前記従来例と同一もしくは相当部分には同
一符号を付して詳しい構造説明は省略する。図１におい
て、弁箱１の弁口部１０の内側には、径方向外側に拡が
る段差面１２と、この段差面１２の径方向外端に連続し
て弁箱１の軸線Ｃ１に沿ってのびる大径部１３が形成さ
れている。大径部１３の内径の大きさは、弁箱シート９
を脱抜可能に嵌合できる値に設定されており、その周壁
における内端部付近に止め輪嵌合溝１４が設けられてい
る。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing the present invention. The same or corresponding parts as those in the conventional example are denoted by the same reference numerals, and detailed description of the structure is omitted. In FIG. 1, a step surface 12 extending radially outward inside a valve port portion 10 of the valve box 1, and extends along an axis C1 of the valve box 1 continuously to a radially outer end of the step surface 12. A large diameter portion 13 is formed. The size of the inner diameter of the large diameter portion 13 is determined by the valve box sheet 9.
Is set to a value that allows it to be detachably fitted, and a retaining ring fitting groove 14 is provided near the inner end of the peripheral wall.
【０００９】１５は止め輪を示す。この止め輪１５は、
比較的弾性度の高い硬質金属板材によって、図２に示す
ように、一般に、スナップリングと称せられる略Ｃ字形
に形成されており、円周方向の両端部に工具引っ掛け用
の透孔１５Ａ，１５Ａが設けられており、板厚は止め輪
嵌合溝１４の溝幅よりも僅かに小さい値に設定されてい
る。また、実線で示す自然状態での外径寸法を止め輪嵌
合溝１４の溝底内径寸法、つまり最大内径寸法よりも若
干小さくし設定し、仮想線で示す径内方向への弾性縮径
状態で止め輪嵌合溝１４に着脱できる外径寸法が得られ
るように構成されている。Reference numeral 15 denotes a retaining ring. This retaining ring 15
As shown in FIG. 2, a hard metal plate having a relatively high elasticity is generally formed in a substantially C-shape called a snap ring, and through holes 15A, 15A for tool hooking are provided at both ends in the circumferential direction. And the plate thickness is set to a value slightly smaller than the groove width of the retaining ring fitting groove 14. Also, the outer diameter in the natural state shown by the solid line is set slightly smaller than the groove bottom inner diameter of the retaining ring fitting groove 14, that is, the maximum inner diameter, and the elastic diameter is reduced inward in the radial direction shown by the virtual line. Thus, an outer diameter that can be attached to and detached from the retaining ring fitting groove 14 can be obtained.
【００１０】このような構成であれば、図１のように弁
箱シート９を上部開口１Ａから弁箱１の内部に装入して
大径部１３に嵌合したのち、専用の工具（図示省略）の
先端部を図２の止め輪１５の工具引っ掛け用の透孔１５
Ａ，１５Ａに挿入して、該止め輪１５を上部開口１Ａか
ら弁箱１の内部に装入し、ここで専用の工具の操作によ
り、止め輪１５を仮想線で示すように縮径させて止め輪
嵌合溝１４に嵌合したのち、前記専用の工具の先端部を
工具引っ掛け用の透孔１５Ａ，１５Ａから離脱させて、
止め輪１５を実線で示す自然状態に復帰させることで、
図１に示すように、止め輪嵌合溝１４に嵌合した止め輪
１４と段差面１２との両者で、弁箱シート９の軸方向両
端面を挟み付けた弁箱シート９の取付け状態を得ること
ができる。With such a configuration, as shown in FIG. 1, the valve case sheet 9 is inserted into the inside of the valve case 1 from the upper opening 1A and fitted into the large diameter portion 13, and then a special tool (shown in FIG. 1) is used. 2) through the through hole 15 for hooking the tool of the retaining ring 15 in FIG.
A, 15A, and the retaining ring 15 is inserted into the inside of the valve box 1 from the upper opening 1A, and the diameter of the retaining ring 15 is reduced by the operation of a special tool here as shown by a virtual line. After fitting in the retaining ring fitting groove 14, the tip of the dedicated tool is detached from the through holes 15A, 15A for hooking the tool,
By returning the retaining ring 15 to the natural state shown by the solid line,
As shown in FIG. 1, the mounting state of the valve box sheet 9 in which both the axial end faces of the valve box sheet 9 are sandwiched between the retaining ring 14 fitted in the retaining ring fitting groove 14 and the step surface 12. Obtainable.
【００１１】一方、弁箱シート９の保守・点検や交換な
どに際しては、前記専用の工具を上部開口１Ａから弁箱
１内に挿入し、その先端部を工具引っ掛け用の透孔１５
Ａ，１５Ａに挿入し、該専用の工具の手動操作により止
め輪１５を前記仮想線で示すように縮径させて止め輪嵌
合溝１４から離脱させることで、弁箱シート９を大径部
１３から簡単に脱抜させることができる。On the other hand, when performing maintenance, inspection or replacement of the valve box sheet 9, the above-mentioned dedicated tool is inserted into the valve box 1 through the upper opening 1A, and the tip of the tool is inserted into a through hole 15 for hooking a tool.
A, 15A, and by manually operating the dedicated tool, the retaining ring 15 is reduced in diameter as shown by the imaginary line and is detached from the retaining ring fitting groove 14, so that the valve box sheet 9 is moved to the large diameter portion. 13 can be easily removed.
【００１２】すなわち、本発明によれば、従来必要とさ
れていた弁箱シート９に対する雄ねじ部９Ａ（図３参
照）や弁箱１に対する従来の雌ねじ部１１（図３参照）
の加工などの煩わしい作業が不要になるので、生産性を
向上させることができる。また、専用の工具を使用した
ワンタッチ操作により、止め輪１５を止め輪嵌合溝１４
に着脱することによって、弁箱シート９の取付け状態あ
るいは弁箱シート９の脱抜可能な状態を得ることができ
るので、弁箱シート９の組立性を向上させ、かつ保守・
点検時や交換時などの作業性を向上させることができ
る。That is, according to the present invention, the conventionally required male screw portion 9A for the valve box sheet 9 (see FIG. 3) and the conventional female screw portion 11 for the valve box 1 (see FIG. 3).
Since the troublesome work such as the processing of the work becomes unnecessary, the productivity can be improved. In addition, the retaining ring 15 is moved into the retaining ring fitting groove 14 by one-touch operation using a dedicated tool.
By attaching and detaching the valve box sheet 9, it is possible to obtain an attached state of the valve box sheet 9 or a detachable state of the valve box sheet 9.
Workability at the time of inspection or replacement can be improved.
【００１３】[0013]
【発明の効果】以上説明したように、本発明は、止め輪
嵌合溝に着脱可能に嵌合した止め輪と弁口部と大径部と
の段差面の両者で弁箱シートの軸方向両端面を挟み付け
て、該弁箱シートを弁箱に取付けているので、従来必要
とされていた弁箱シートに対する雄ねじ部や弁箱に対す
る雌ねじ部の加工などの煩わしい作業が不要になり、生
産性を向上させることができる。また、専用の工具を使
用したワンタッチ操作により、止め輪を止め輪嵌合溝に
着脱することによって、弁箱シートの取付け状態あるい
は弁箱シートの脱抜可能な状態を得ることができるの
で、弁箱シートの組立性を向上させ、かつ保守・点検時
や交換時などの作業性を向上させることができる。As described above, according to the present invention, both the retaining ring removably fitted in the retaining ring fitting groove and the stepped surface between the valve port and the large diameter portion are provided in the axial direction of the valve box sheet. Since the valve box sheet is attached to the valve box with both end surfaces sandwiched, cumbersome operations such as processing of a male screw portion for the valve box sheet and a female screw portion for the valve box, which are conventionally required, are eliminated. Performance can be improved. In addition, by attaching and detaching the retaining ring to the retaining ring fitting groove by one-touch operation using a dedicated tool, it is possible to obtain a mounted state of the valve box sheet or a detachable state of the valve box sheet. It is possible to improve the assemblability of the box sheet and the workability at the time of maintenance / inspection or replacement.
【図１】本発明の一実施の形態を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】止め輪の一実施の形態を示す正面図である。FIG. 2 is a front view showing an embodiment of a retaining ring.
【図３】従来例の縦断面図である。FIG. 3 is a longitudinal sectional view of a conventional example.
１ 弁箱 ２ 上弁棒（弁棒） ３ 下弁棒（弁棒） ６ 弁体 ７ 上側弁棒支持部 ８ 下側弁棒支持部 ９ 弁箱シート １０ 弁口部 １２ 段差面 １３ 大径部 １４ 止め輪嵌合溝 １５ 止め輪 Ｃ１ 弁箱の軸線 Ｃ２ 弁棒の軸線 DESCRIPTION OF SYMBOLS 1 Valve box 2 Upper valve stem (valve stem) 3 Lower valve stem (valve stem) 6 Valve body 7 Upper valve stem support part 8 Lower valve stem support part 9 Valve box sheet 10 Valve mouth part 12 Step surface 13 Large diameter part 14 Retaining ring fitting groove 15 Retaining ring C1 Axis of valve box C2 Axis of valve stem
Claims (1)
と、この弁棒に偏心して取付けられた弁体とを備え、前
記弁箱の上部開口を開放可能に閉塞する蓋体に設けられ
た上側弁棒支持部に前記弁棒が軸まわりに回転自在に支
持されているとともに、前記弁箱側に設けられた下側弁
棒支持部に前記弁棒が軸まわりに回転自在に支持され、
前記弁棒の軸まわりの正逆方向の回転により前記弁体が
弁口部内側の弁箱シートに接離して該弁口部を開閉する
ように構成された偏心構造弁において、前記弁箱シート
が前記弁口部内側の大径部に脱抜可能に嵌合されている
とともに、該大径部の周壁に止め輪嵌合溝が設けられ、
この止め輪嵌合溝に着脱可能に嵌合した止め輪と前記弁
口部と大径部との段差面の両者で、前記弁箱シートの軸
方向両端面を挟み付けて該弁箱シートが弁箱に取付けら
れていることを特徴とする偏心構造弁における弁箱シー
トの取付け構造。1. A valve stem having an axis crossing an axis of a valve box, and a valve body eccentrically mounted on the valve stem, wherein the valve body is provided on a lid body for opening and closing an upper opening of the valve box. The valve stem is rotatably supported around an axis by the upper valve stem support portion provided, and the valve stem is rotatably supported around the axis by a lower valve stem support portion provided on the valve box side. And
An eccentric structure valve configured to open and close the valve port by bringing the valve body into and out of the valve box sheet inside the valve port by rotation in forward and reverse directions around the axis of the valve stem, wherein the valve box sheet Is detachably fitted to the large-diameter portion inside the valve port portion, and a retaining ring fitting groove is provided on a peripheral wall of the large-diameter portion,
Both the axial direction end faces of the valve box sheet are sandwiched by both the retaining ring removably fitted in the retaining ring fitting groove and the stepped surface of the valve port portion and the large diameter portion. A valve box seat mounting structure for an eccentric valve, which is mounted on a valve box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP403198A JPH11201302A (en) | 1998-01-12 | 1998-01-12 | Fitting structure of valve casing seat in eccentric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP403198A JPH11201302A (en) | 1998-01-12 | 1998-01-12 | Fitting structure of valve casing seat in eccentric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11201302A true JPH11201302A (en) | 1999-07-30 |
Family
ID=11573604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP403198A Withdrawn JPH11201302A (en) | 1998-01-12 | 1998-01-12 | Fitting structure of valve casing seat in eccentric valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11201302A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065702A (en) * | 2015-07-16 | 2015-11-18 | 浙江福瑞科流控机械有限公司 | Lifting plug valve and control method thereof |
| CN109434456A (en) * | 2018-12-27 | 2019-03-08 | 凡尔机械集团有限公司 | A kind of Novel valve core component and its assembly technology |
-
1998
- 1998-01-12 JP JP403198A patent/JPH11201302A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065702A (en) * | 2015-07-16 | 2015-11-18 | 浙江福瑞科流控机械有限公司 | Lifting plug valve and control method thereof |
| CN109434456A (en) * | 2018-12-27 | 2019-03-08 | 凡尔机械集团有限公司 | A kind of Novel valve core component and its assembly technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A761 | Written withdrawal of application |
Effective date: 20040120 Free format text: JAPANESE INTERMEDIATE CODE: A761 |
|
| A521 | Written amendment |
Effective date: 20040120 Free format text: JAPANESE INTERMEDIATE CODE: A821 |