JPH0112988B2 - - Google Patents
Info
- Publication number
- JPH0112988B2 JPH0112988B2 JP19651783A JP19651783A JPH0112988B2 JP H0112988 B2 JPH0112988 B2 JP H0112988B2 JP 19651783 A JP19651783 A JP 19651783A JP 19651783 A JP19651783 A JP 19651783A JP H0112988 B2 JPH0112988 B2 JP H0112988B2
- Authority
- JP
- Japan
- Prior art keywords
- ball valve
- flow rate
- opening
- base material
- spindle
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Details Of Valves (AREA)
Description
【発明の詳細な説明】
本発明は上水道等に用いるボール弁型止水栓に
関し、特に、流量調整が可能でかつ開閉時の水撃
作用を防止したボール弁型止水栓の構造に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ball valve type water stop valve used for waterworks, etc., and particularly to a structure of a ball valve type water stop valve that allows flow rate adjustment and prevents water hammer action when opening and closing.
周知のように、ボール弁型止水栓は、ボール弁
の２箇所で２重のシールを行える点やシール面が
球面であるためにボールシートの変形が少ない等
の点から、止水栓として優れた特性をもつている
が、ボール弁を半開状態にしたままに長時間に亘
つて放置すると、ボール弁の表面から外れたボー
ルシートに局部変形が起こり、漏水の原因となる
ので、ボール弁型止水栓は全開−全閉状態で用い
る必要がある。 As is well known, ball valve type water stop valves are popular as water stop valves because they can perform double sealing at two locations on the ball valve, and because the sealing surface is spherical, there is less deformation of the ball seat. Although it has excellent characteristics, if the ball valve is left in a half-open state for a long time, the ball seat that has come off the surface of the ball valve will locally deform, causing water leakage. Type stop valves must be used in the fully open and fully closed states.
ところで、最近の上水道事業においては、住宅
の高層化や丘陵の宅地化等が原因となつて配管内
水圧にかなりの格差が生じており、水圧の高い場
所では、流量を絞つて給水する必要が増加しつつ
ある。したがつて、このような流量調整は各家庭
や事業所ごとに量水計とともにかならず設置され
る止水栓の開度調整で行うのが簡便な方法である
けれども、前述したようにボール弁型止水栓で開
度調整を行うことは困難であつた。 By the way, in recent water supply projects, there has been a considerable disparity in water pressure in pipes due to the rise of high-rise houses and the development of hilly residential areas, and in places with high water pressure, it is necessary to reduce the flow rate when supplying water. It is increasing. Therefore, it is easy to adjust the flow rate by adjusting the opening of the stop valve, which is always installed along with a water meter in each home or business, but as mentioned above, the ball valve type It was difficult to adjust the opening of the stop valve.
また、従来のボール弁型止水栓にあつては、ボ
ール弁に直結されたスピンドルをハンドル操作す
るため、その開閉時の水撃作用が問題となつてい
る。即ち、従来のボール弁型止水栓は、ハンドル
を取付けたスピンドルでボール弁を直接に回転操
作するため、ハンドルの90度回転により開閉でき
る。したがつて、ハンドルを急激に開閉操作する
と、水圧の高い場所では予期できぬ大きな水撃作
用が起こり、量水計の破損や鉛管等の破裂事故が
誘発される。特に、このような破損・破裂事故
は、住宅の高層化や丘陵地の宅地化に比例して増
加する傾向にあるため、各地の水道事業団体にお
いて対策が急務となりつつある。 Furthermore, in the case of conventional ball valve type water stop valves, a spindle directly connected to the ball valve is operated by a handle, so water hammer effect when the ball valve is opened and closed poses a problem. That is, in the conventional ball valve type water stop faucet, since the ball valve is directly rotated by a spindle to which a handle is attached, it can be opened and closed by rotating the handle 90 degrees. Therefore, if the handle is opened or closed rapidly, an unexpectedly large water hammer effect will occur in areas with high water pressure, leading to damage to the water meter and rupture of lead pipes. In particular, such damage and bursting accidents tend to increase in proportion to the rise in the number of high-rise houses and the development of residential areas in hilly areas, so countermeasures are becoming an urgent issue for water supply organizations in various regions.
本発明は、以上に述べたような従来のボール弁
型止水栓の問題に鑑み、ボール弁を全開−全閉状
態で使用できる流量調整機能をもち、ボール弁の
急激な開閉操作を阻止できる構造を得ることを目
的とするもので、母材中に収容されたボール弁を
スピンドルに固定するハンドルで開閉するボール
弁型止水栓において、前記母材の頂部に自由に自
転できるデイスクを組込み、同デイスクに母材内
周のリングギアと噛合う複数の遊星歯車を支持
し、ハンドルに結合されるスピンドルの内端の太
陽歯車を前記遊星歯車に噛合させ、前記デイスク
で回転される回転軸を母材内部の開閉スリーブに
回転接手し、開閉スリーブ中に流量制限部材を摺
動可能に収容し、前記スピンドルの貫通した貫通
孔に臨んだ前記回転軸のねじ穴に、前記流量制限
部材に回転可能に接手した調節ねじをねじ込み、
前記開閉スリーブの底壁スロツトを貫抜く流量制
限部材の舌状制限板を、通水孔に直角に交差する
ようにボール弁に形成したスロツトに抜差自在に
挿入を提案するものである。 In view of the problems of conventional ball valve type water stop valves as described above, the present invention has a flow rate adjustment function that allows the ball valve to be used in a fully open and fully closed state, and can prevent sudden opening and closing operations of the ball valve. In a ball valve type water stop valve that is opened and closed by a handle that fixes a ball valve housed in a base material to a spindle, a disk that can freely rotate is incorporated in the top of the base material. , supporting a plurality of planetary gears that mesh with a ring gear on the inner periphery of the base material on the disk, a sun gear on the inner end of a spindle connected to the handle meshing with the planetary gears, and a rotating shaft rotated by the disk. is rotatably connected to an opening/closing sleeve inside the base material, a flow rate limiting member is slidably accommodated in the opening/closing sleeve, and a screw hole of the rotary shaft facing the through hole of the spindle is connected to the flow rate limiting member. Screw in the rotatably connected adjustment screw,
It is proposed that the tongue-shaped restriction plate of the flow rate restriction member, which passes through the bottom wall slot of the opening/closing sleeve, is freely inserted into and removed from a slot formed in the ball valve so as to intersect the water passage hole at right angles.
以下、図面について本発明の実施例の詳細を説
明する。 Embodiments of the invention will now be described in detail with reference to the drawings.
第１図及び第２図において、本体１とボール押
え２とで構成される母材Ａには上流側管接手３及
び下流側管接手４が形成され、同母材Ａ中には両
端を一対のボールシート５，６に着座されるボー
ル弁７が収容してある。即ち、同ボール弁７は前
記上流側管接手３及び下流側管接手４に連通でき
る通水孔８を有し、本体１の上方に回転自在に設
けるスピンドル９に止めねじ１０で固定するハン
ドル１１を、後述のように約360゜回転することに
より、上流側管接手３及び下流側管接手４間を遮
断できる。 1 and 2, an upstream pipe joint 3 and a downstream pipe joint 4 are formed on a base material A consisting of a main body 1 and a ball holder 2, and a pair of both ends are formed in the base material A. A ball valve 7 seated on ball seats 5 and 6 is accommodated. That is, the ball valve 7 has a water hole 8 that can communicate with the upstream pipe joint 3 and the downstream pipe joint 4, and has a handle 11 that is fixed with a set screw 10 to a spindle 9 rotatably provided above the main body 1. By rotating approximately 360 degrees as described below, the upstream pipe joint 3 and the downstream pipe joint 4 can be isolated.
そして、前記母材Ａの上部には、自由に自転で
きるデイスク１２を内蔵した筒状ケーシング１３
が固定してある。第４図に詳細を示すデイスク１
２の表面には角度方向に120度づつ離れた位置に
３個のスペーサリブ１２ａが一体成形され、これ
らのスペーサリブ１２ａによつて支持リング１２
ｂが支持してある。 In the upper part of the base material A, there is a cylindrical casing 13 containing a disk 12 that can freely rotate.
is fixed. Disk 1, details shown in Figure 4
Three spacer ribs 12a are integrally molded on the surface of the support ring 12 at positions 120 degrees apart in the angular direction.
b is supported.
前記デイスク１２と支持リング１２ｂの間の空
間には、デイスク１２と支持リング１２ｂの間に
掛渡した遊星軸１４を中心として回転できる３個
の遊星歯車１５が位置され、これらの遊星歯車１
５は前記筒状ケーシング１３の内周面に形成する
リングギア１６に噛合されている。 In the space between the disk 12 and the support ring 12b, three planetary gears 15 that can rotate around a planetary shaft 14 spanned between the disk 12 and the support ring 12b are positioned.
5 is meshed with a ring gear 16 formed on the inner peripheral surface of the cylindrical casing 13.
一方、前記筒状ケーシング１３を閉じるキヤツ
プ１７にはハンドル１１を取付けられたスピンド
ル９が回転可能に支持され、同スピンドル９の内
端の太陽歯車１８は支持リング１２ｂ中に挿入さ
れ、各遊星歯車１５と噛合してある。また、デイ
スク１２の中心の角穴１９には、筒状ケーシング
１３の下部の本体１に回転可能に位置した回転軸
２０の角軸部２０ａが挿入接手してある。 On the other hand, a spindle 9 to which a handle 11 is attached is rotatably supported by a cap 17 that closes the cylindrical casing 13. A sun gear 18 at the inner end of the spindle 9 is inserted into a support ring 12b, and each planetary gear It meshes with 15. Further, a square shaft portion 20a of a rotary shaft 20 rotatably positioned in the main body 1 at the lower part of the cylindrical casing 13 is inserted into the square hole 19 at the center of the disk 12 and is connected thereto.
したがつて、以上のような構造のため、ハンド
ル１１によつてスピンドル９を回転させると、遊
星歯車１５が遊星運動を行い、減速された回転運
動が回転軸２０に伝えられることになる。即ち、
リングギア１６の歯数をN1、太陽歯車１８の歯
数をN2とすれば、減速比は
１／１＋N1／N2
として与えられるから、両者の歯数比を３：１に
設計すれば、ハンドル１１の１回転で回転軸２０
を90度回転できる。このため、後述から理解され
るように、ハンドル１１の操作でボール弁７を急
速に開閉しようとしてもハンドル１８の90度回転
でボール弁７は約22度しか回転しないから、ボー
ル弁７の開閉時に起こる水撃作用は大幅に緩和さ
れることになる。 Therefore, due to the above structure, when the spindle 9 is rotated by the handle 11, the planetary gear 15 performs planetary motion, and the decelerated rotational motion is transmitted to the rotating shaft 20. That is,
If the number of teeth of the ring gear 16 is N 1 and the number of teeth of the sun gear 18 is N 2 , the reduction ratio is given as 1/1 + N 1 /N 2 , so the ratio of the number of teeth between the two should be designed to be 3:1. For example, one rotation of the handle 11 rotates the rotation axis 20.
can be rotated 90 degrees. Therefore, as will be understood from the description below, even if you try to rapidly open and close the ball valve 7 by operating the handle 11, the ball valve 7 will only rotate about 22 degrees when the handle 18 rotates 90 degrees, so the ball valve 7 will open and close. The water hammer effect that sometimes occurs will be greatly alleviated.
なお、前記回転軸２０の角軸部２０ａの根本に
は周面突起２１ａを有する回転防止板２１がはめ
られ、同回転防止板２１の周面突起２１ａは本体
１の筒状部１ａ端面に形成した1/4円弧溝２２に
位置される。したがつて、ハンドル１１及びスピ
ンドル９の回転運動は回転防止板２１により約
90゜だけの回動に制限されることになる。 A rotation prevention plate 21 having a circumferential protrusion 21a is fitted to the base of the square shaft portion 20a of the rotating shaft 20, and the circumferential protrusion 21a of the rotation prevention plate 21 is formed on the end surface of the cylindrical portion 1a of the main body 1. It is located in the 1/4 circular arc groove 22. Therefore, the rotational movement of the handle 11 and the spindle 9 is prevented by the rotation prevention plate 21.
Rotation is limited to only 90 degrees.
構造説明に戻つて、前記本体１の筒状部１ａ中
には有底の開閉スリーブ２３が回転可能に収容さ
れ、同開閉スリーブ２３の開放端には回転軸２０
の内端デイスク２０ｂの端面凹所２４に挿入され
る爪２５が形成され、回転軸２０の回動によつて
開閉スリーブ２３を回動できるようにしてある。
また、開閉スリーブ２３の内部には円柱状の流量
制限部材２６が開閉スリーブ２３の長さ方向に移
動可能に収容され同流量制限部材２６に一体に形
成された舌状制限板２７は開閉スリーブ２３の底
壁スロツト２８を通つてボール弁７側に突出され
る。ボール弁７には前記通水孔８に対して直角に
交差するスロツト２９が形成され、前記舌状制限
板２７の先端部は同スロツト２９を通つて通水孔
８中に介入している。 Returning to the structural description, a bottomed opening/closing sleeve 23 is rotatably accommodated in the cylindrical portion 1a of the main body 1, and a rotating shaft 20 is attached to the open end of the opening/closing sleeve 23.
A pawl 25 is formed to be inserted into the end face recess 24 of the inner end disk 20b, so that the opening/closing sleeve 23 can be rotated by rotation of the rotating shaft 20.
Further, a cylindrical flow rate limiting member 26 is accommodated inside the opening/closing sleeve 23 so as to be movable in the length direction of the opening/closing sleeve 23 , and a tongue-shaped restricting plate 27 integrally formed with the flow rate restricting member 26 It protrudes toward the ball valve 7 side through the bottom wall slot 28 of the ball valve 7. A slot 29 is formed in the ball valve 7 and intersects the water passage hole 8 at right angles, and the tip of the tongue-shaped restriction plate 27 is inserted into the water passage hole 8 through the slot 29.
一方、前記スピンドル９の中心部には前記ハン
ドルを固定する止めねじ１０を取付けることがで
きる貫通孔３０が形成され、同貫通孔３０に対し
ては止めねじ１０を外してスクリユドライバＢを
挿入することができる。同貫通孔３０の内端に臨
む前記回転軸２０の中心部にはねじ穴３１が形成
され、前記ねじ穴３１にねじ込まれた調節ねじ３
２を、前記貫通孔３０に挿入するスクリユドライ
バＢで位置調節できる。また、調節ねじ３２の頭
部３２ａは流量制限部材２６の上端面に形成した
円形凹所３３中に受入れられ、同円形凹所３３の
内周面に係止されるスナツプリング３４により、
調節ねじ３２の頭部３２ａは円形凹所３３からの
抜出しを阻止される。 On the other hand, a through hole 30 is formed in the center of the spindle 9, into which a set screw 10 for fixing the handle can be attached. can do. A screw hole 31 is formed in the center of the rotating shaft 20 facing the inner end of the through hole 30, and an adjusting screw 3 is screwed into the screw hole 31.
2 can be adjusted in position with a screwdriver B inserted into the through hole 30. Further, the head 32a of the adjusting screw 32 is received in a circular recess 33 formed on the upper end surface of the flow rate restricting member 26, and a snap spring 34 is engaged with the inner peripheral surface of the circular recess 33.
The head 32a of the adjusting screw 32 is prevented from being pulled out of the circular recess 33.
図示実施例は、以上のような構造であるから、
スピンドル９からハンドル１１及び止めねじ１０
を取外した後、貫通孔３０にスクリユドライバＢ
を差込んで調節ねじ３２を回転すれば、流量を調
節できる。即ち、調節ねじ３２を回転すると、開
閉スリーブ２３によつて流量制限部材２６の回動
運動が阻止されているため調節ねじ３２の上下方
向の動きのみが流量制限部材２６に伝えられ、通
水孔８に対する舌状制限板２７の介入深さにより
流路断面が制限される。したがつて、配管の水圧
に応じて舌状制限板２１の位置を変更することに
より節水を行うことができる。また、図示の構造
においては、ハンドル１１側のみで開閉と流量調
整を行うことができるので、量水器内に止水栓を
組入れた状態での流量調整を容易に行うことがで
きる。図示の止水栓の完全な組立状態において
は、調節ねじ３２を外部から操作することができ
なくなるので、いたずら等で流量調整状態が後発
的にくるうこともない。なお、ボール弁７の開閉
時におけるハンドル１１の開閉運動は、スピンド
ル９、遊星歯車１５、デイスク１２、回転軸２
０、開閉スリーブ２３、舌状制限板２７、ボール
弁７の順に回動運動が伝えられることになる。 Since the illustrated embodiment has the above structure,
From the spindle 9 to the handle 11 and set screw 10
After removing the screwdriver B, insert it into the through hole 30.
By inserting and rotating the adjustment screw 32, the flow rate can be adjusted. That is, when the adjusting screw 32 is rotated, only the vertical movement of the adjusting screw 32 is transmitted to the flow rate restricting member 26 because the opening/closing sleeve 23 prevents the rotational movement of the flow rate restricting member 26. The cross section of the flow path is limited by the depth of intervention of the tongue-shaped limiting plate 27 relative to the channel 8. Therefore, water can be saved by changing the position of the tongue-shaped restriction plate 21 according to the water pressure of the piping. Further, in the illustrated structure, since opening/closing and flow rate adjustment can be performed only on the handle 11 side, flow rate adjustment can be easily performed with a water stop valve installed in the water meter. In the fully assembled state of the water stop valve shown in the figure, the adjustment screw 32 cannot be operated from the outside, so that the flow rate adjustment state will not occur later due to mischief or the like. The opening and closing movement of the handle 11 when the ball valve 7 is opened and closed is caused by the spindle 9, the planetary gear 15, the disk 12, and the rotating shaft 2.
0, the rotational motion is transmitted to the opening/closing sleeve 23, the tongue-shaped restriction plate 27, and the ball valve 7 in this order.
結局、本発明によれば、ハンドルの急速な開閉
操作による水撃作用を緩和でき、また、調節ねじ
によつて流量を自由に設定できるボール弁型止水
栓を得ることができる。 As a result, according to the present invention, it is possible to obtain a ball valve type water stop faucet that can alleviate the water hammer effect caused by rapid opening and closing operations of the handle, and can freely set the flow rate using the adjustment screw.
第１図は本発明によるボール弁型止水栓の断面
図、第２図は第１図の−線に沿う断面図、第
３図は第１図の−線に沿う断面図、第４図は
同ボール弁型止水栓の要部分解斜視図、第５図は
ボール弁の拡大斜視図である。
Ａ……母材、７……ボール弁、９……スピンド
ル、１１……ハンドル、１２……デイスク、１５
……遊星歯車、１６……リングギア、１８……太
陽歯車、２０……回転軸、２３……開閉スリー
ブ、２６……流量制限部材、２７……舌状制限
板、２９……スロツト、３０……貫通孔、３２…
…調節ねじ。
Fig. 1 is a sectional view of a ball valve type water stop valve according to the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, Fig. 3 is a sectional view taken along the - line in Fig. 1, and Fig. 4 is a sectional view taken along the - line in Fig. 1. 5 is an exploded perspective view of essential parts of the ball valve type water stop valve, and FIG. 5 is an enlarged perspective view of the ball valve. A... Base material, 7... Ball valve, 9... Spindle, 11... Handle, 12... Disk, 15
... Planet gear, 16 ... Ring gear, 18 ... Sun gear, 20 ... Rotating shaft, 23 ... Opening/closing sleeve, 26 ... Flow rate restriction member, 27 ... Tongue-shaped restriction plate, 29 ... Slot, 30 ...Through hole, 32...
...adjustment screw.
Claims (1)
固定するハンドルで開閉するボール弁型止水栓に
おいて、前記母材の頂部に自由に自転できるデイ
スクを組込み、同デイスクに母材内周のリングギ
アと噛合う複数の遊星歯車を支持し、ハンドルに
結合されるスピンドルの内端の太陽歯車を前記遊
星歯車に噛合させ、前記デイスクで回転される回
転軸を母材内部の開閉スリーブに回転接手し、開
閉スリーブ中に流量制限部材を摺動可能に収容
し、前記スピンドルの貫通した貫通孔に臨んだ前
記回転軸のねじ穴に、前記流量制限部材に回転可
能に接手した調節ねじをねじ込み、前記開閉スリ
ーブの底壁スロツトを貫抜く流量制限部材の舌状
制限板を、通水孔に直角に交差するようにボール
弁に形成したスロツトに抜差自在に挿入したこと
を特徴とするボール弁型止水栓。1. In a ball valve type water stop valve that is opened and closed by a handle that fixes a ball valve housed in a base material to a spindle, a disc that can freely rotate is built into the top of the base material, and a ring on the inner periphery of the base material is attached to the disc. A rotary joint that supports a plurality of planetary gears meshing with the gears, meshes a sun gear at the inner end of a spindle coupled to the handle with the planetary gears, and connects a rotating shaft rotated by the disk to an opening/closing sleeve inside the base material. a flow rate limiting member is slidably accommodated in an opening/closing sleeve, and an adjustment screw rotatably connected to the flow rate limiting member is screwed into a screw hole of the rotating shaft facing the through hole of the spindle; A ball valve characterized in that a tongue-shaped restriction plate of a flow rate restriction member that passes through a bottom wall slot of the opening/closing sleeve is inserted into and out of a slot formed in the ball valve so as to intersect at right angles to a water passage hole. Type stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19651783A JPS6088280A (en) | 1983-10-20 | 1983-10-20 | Ball-valve type stop cock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19651783A JPS6088280A (en) | 1983-10-20 | 1983-10-20 | Ball-valve type stop cock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6088280A JPS6088280A (en) | 1985-05-18 |
| JPH0112988B2 true JPH0112988B2 (en) | 1989-03-02 |
Family
ID=16359054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19651783A Granted JPS6088280A (en) | 1983-10-20 | 1983-10-20 | Ball-valve type stop cock |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6088280A (en) |
-
1983
- 1983-10-20 JP JP19651783A patent/JPS6088280A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6088280A (en) | 1985-05-18 |
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