JP2602060B2 - Manufacturing method of branch pipe joint - Google Patents
Manufacturing method of branch pipe jointInfo
- Publication number
- JP2602060B2 JP2602060B2 JP63126844A JP12684488A JP2602060B2 JP 2602060 B2 JP2602060 B2 JP 2602060B2 JP 63126844 A JP63126844 A JP 63126844A JP 12684488 A JP12684488 A JP 12684488A JP 2602060 B2 JP2602060 B2 JP 2602060B2
- Authority
- JP
- Japan
- Prior art keywords
- branch pipe
- pipe
- branch
- joint
- main pipe
- 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 - Fee Related
Links
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は一般に自動車、或いは各種の機械、装置等に
燃料その他給油、給気等の供給路として配設される管径
20m/m程度以下の比較的細径からなる金属配管によるＴ
型等の分岐管継手の製法方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention generally relates to a pipe diameter provided as a supply path for fuel, other refueling, air supply, and the like in an automobile or various machines and devices.
T with metal pipe of relatively small diameter of about 20m / m or less
The present invention relates to a method for manufacturing a branch pipe joint such as a mold.
［従来の技術］ 従来、この種の分岐管継手、特にＴ型分岐管継手の製
造方法としては、例えば第13図に示すように主管
（Ｐ′）の周壁部に設けた分流孔（13）部に、枝管
（P1′）側の端部に形成した鞍状の開口壁（14）部を被
着重合した状態で該重合面を鑞溶着して成形するか、或
いは第14図（イ）及び（ロ）（実公昭56−16453号公
報）に示すように偏心した軸芯部に貫孔（22）と周側部
に該貫孔に直交して連通した分岐接続孔（24）とを設け
るよう短円柱状の金属棒材を切削加工して継手本体（2
1）を形成し、該貫孔部に、分流孔（23）部を位置して
主管（Ｐ″）を挿入し、同時に前記分岐接続孔（24）部
に枝管（P1″）を組付けた状態でそれぞれ孔周部を鑞溶
着して成形するかしてなるものであった。[Prior Art] Conventionally, as a method of manufacturing a branch pipe joint of this type, particularly a T-shaped branch pipe joint, a branch hole (13) provided in a peripheral wall portion of a main pipe (P ') as shown in FIG. in part, the branch pipe (P 1 ') the saddle-shaped aperture wall (14) portion formed on the end portion of the side in a state of deposited polymer or molded鑞溶wearing the polymerization surface or Figure 14 ( As shown in (a) and (b) (Japanese Utility Model Publication No. 56-16453), a through hole (22) is provided in the eccentric shaft core portion, and a branch connection hole (24) is provided in the peripheral side portion so as to communicate with the through hole at right angles. The joint body (2
1) is formed, into the through hole, positioned shunt hole (23) unit "Insert a), branch pipe (P 1 simultaneously the branch connection hole (24) unit" main (P set a) Each of the holes was solder-welded to the periphery of the hole and molded.
［発明が解決しようとする課題］ しかしながら、このような従来の技術においては、前
者にあっては被着重合面での鑞溶着に先立って、スポッ
ト溶接等の仮付けによる位置決め作業を必要とするた
め、これら作業上の煩わしさを招き、また、開口壁（1
4）の面積を充分に得ることができず、従って重合した
構造によって鑞溶着強度の不足を招いて洩れを生ぜしめ
易い傾向にあり、更に枝管側に管径上の制限を余儀なく
され、主管と少くとも同径の枝管が使用しにくい等の問
題を有するものであった。又、後者にあっては、棒材
の、特に偏心した切削加工による継手本体（21）によっ
て製造コストを高めることとなり、また、製品重量を著
しく増加する等の問題を有するものであった。[Problems to be Solved by the Invention] However, in such a conventional technique, prior to soldering on a polymerized surface to be adhered, positioning work by temporary attachment such as spot welding is required. As a result, the work is troublesome, and the opening wall (1
4) The area of 4) cannot be obtained sufficiently, so that the polymerized structure tends to cause insufficient soldering strength, which tends to cause leakage. There is a problem that it is difficult to use a branch pipe having at least the same diameter. In the latter case, there is a problem that the manufacturing cost is increased by the joint body (21) of the bar material, particularly by eccentric cutting, and the weight of the product is significantly increased.
本発明は従来技術の有する前記問題に鑑みてなされた
もので、鑞溶着作業上の煩わしさを軽減し、また、鑞溶
着強度を充分となして漏れの憂いをなくすことができ、
更に所望に応じて主管と同径又は径が異なる枝管の配設
を可能となす等、該枝管側の管径の制限を緩和すると共
に、製造コストを低減し、同時に製品を軽量となすこと
のできる分岐管継手の製造方法を提供することを目的と
するものである。The present invention has been made in view of the above-mentioned problems of the related art, and reduces the troublesome work of the soldering operation, and can also make the soldering strength sufficient to eliminate the fear of leakage,
Furthermore, it is possible to arrange a branch pipe having the same diameter or a different diameter from the main pipe as required, thereby alleviating the restriction on the pipe diameter on the branch pipe side, reducing the manufacturing cost, and simultaneously reducing the weight of the product. It is an object of the present invention to provide a method for manufacturing a branch pipe joint which can be used.
［課題を解決するための手段］ 本発明は上記目的を達成するため、周壁部に分流孔を
有する一体からなる主管の該分流孔部、或いは相互の対
向する端部に間隔を保持して配列した別体からなる主管
のなす該間隔部を、板片によってその長手方向の略中央
部をＵ字状に屈曲してなる継手本体の該屈曲部のなす底
壁内部の中央附近に位置して挿入せしめると共に枝管を
前記分流孔部或いは間隔部にその端部を対向して継手本
体のＵ字状の上側開口壁部に組付け、更にかかる状態に
あって枝管の組付け側に位置する前記開口壁部を、該枝
管の組付け部を残して対向する方向から扁平状に押圧加
工を施して相互に当接せしめ、前記主管及び枝管の外周
面とにそれぞれ密合せしめた状態でこれら相互の密合面
を一括鑞溶着して成形するか、或いは分流孔のない主管
を継手本体の屈曲部のなす底壁内部に挿入し前記工程を
経た後、一括鑞溶着し、次いで枝管内部に切削具を挿入
し主管の周壁部に分流孔を穿設して成形せしめてなる分
岐管継手の製造方法を要旨とするものである。[Means for Solving the Problems] In order to achieve the above object, the present invention provides an integrated main pipe having a flow dividing hole in a peripheral wall portion, or an array in which the flow dividing holes are maintained at opposite ends of the main pipe. The main pipe made of the separate body is located near the center inside the bottom wall formed by the bent portion of the joint body formed by bending a substantially central portion of the joint body into a U-shape by a plate piece. At the same time, the branch pipe is inserted into the U-shaped upper opening wall of the joint main body with the ends thereof facing the branch holes or the gaps, and is located on the mounting side of the branch pipe in such a state. The opening wall portions were flattened and pressed against each other from the opposite direction while leaving the assembled portion of the branch pipe, and were brought into close contact with the outer peripheral surfaces of the main pipe and the branch pipe. In this state, these mutually intimate surfaces are soldered together and molded, or After inserting the main pipe without the inside into the bottom wall of the bent part of the joint main body and passing through the above-mentioned process, collectively brazing and then inserting a cutting tool inside the branch pipe and drilling a diversion hole in the peripheral wall of the main pipe. The gist of the present invention is a method of manufacturing a branch pipe joint formed by molding.
［作 用］ 本発明はこのような製造方法によるため、Ｕ字状に屈
曲した板片からなる継手本体の底壁内部に主管を、同時
にその上側開口壁部に枝管をそれぞれ組付けた状態での
前記扁平状の押圧加工による当接と、相互の密合面での
一括鑞溶着とにより成形することにより、鑞溶着作業上
の煩わしさを軽減し、また、前記密合によって鑞溶着強
度を充分となして洩れの憂いがなく、且つ押圧加工によ
る扁平部がリブとして補強効果を発揮して継手全体の剛
性を高め、更に主管と同径又は径が異なる枝管の配設を
も可能となすことができて枝管側の管径の制限を緩和す
ると共に、継手本体としてのＵ字状に屈曲した板片によ
る簡易な成形によって製造コストを低減し、同時に製品
を軽量となすことができることとなる。[Operation] Since the present invention is based on such a manufacturing method, a state in which the main pipe is assembled inside the bottom wall of the joint main body formed of a U-shaped bent piece and the branch pipe is simultaneously assembled on the upper opening wall thereof. Forming by the contact by the flat press working in the above and the collective brazing on the mutually intimate surfaces, thereby reducing the troublesome work in the brazing operation, and the brazing strength The flat part formed by pressing has a reinforcing effect as a rib to increase the rigidity of the entire joint, and it is also possible to arrange a branch pipe with the same diameter or a different diameter as the main pipe. In addition to alleviating the restriction on the pipe diameter on the branch pipe side, the manufacturing cost can be reduced by simple molding using a U-shaped bent plate piece as the joint body, and at the same time the product can be made lightweight. You can do it.
［実施例］ 以下、本発明の実施例を図面に基づいて説明すれば、
第１図は本発明の一実施例に係る分岐管継手の製造方法
によって製造されるＴ型分岐管継手の扁平状の押圧加工
前の平面図、第２図は第１図の側面図、第３図は第２図
のＡ−Ａ線の断面図、第４図は他の実施例による第３図
相当図、第５図は他の実施例の継手本体の板片の側面
図、第６図は第５図の板片を用いた平面図、第７図は第
１図の扁平状の押圧加工後の状態図、第８図は第７図の
側面図、第９図は第７図Ｂ−Ｂ線の断面図、第10図乃至
第12図は夫々本発明の更に他の実施例の断面図であっ
て、まず第１図乃至第４図において、（１）は長手方向
の略中央部をＵ字状に屈曲した板片からなる継手本体で
ある。そして周壁部に分流孔（３）を有する一体からな
る主管（Ｐ）の該分流孔部（第３図）、或いは相互の対
向する端部に間隔（３′）を保持して配列した別体から
なる主管（Ｐ）との該間隔部（第４図）を、前記継手本
体（１）の該屈曲部をなす底壁内部の略中央附近に位置
して挿入せしめると共に、主管（Ｐ）と同径の枝管
（P0）を前記分分流孔（３）部或いは間隔（３′）部に
その端部を対向して継手本体（１）のＵ字状の上側開口
壁（２）部に組付けておく。そしてこれら状態にあって
枝管（P0）の組付け側に位置する前記開口壁（２）部を
上下一対からなるＴ字状の溝を有するプレス型により該
枝管の組付け部を残して対向する方向から扁平状の押圧
加工を施して当接した扁平部（５）を形成せしめ、主管
（Ｐ）と枝管（P0）の外周面とにそれぞれ密合せしめ
る。このような状態、或いは必要に応じて扁平部（５）
をスポット溶接等により仮付けした状態でこれら相互の
密合面を炉中加熱等により一括鑞溶着して成形せしめる
のである。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a T-shaped branch pipe joint manufactured by a method of manufacturing a branch pipe joint according to one embodiment of the present invention before flat pressing, FIG. 2 is a side view of FIG. 3 is a sectional view taken along line AA of FIG. 2, FIG. 4 is a view corresponding to FIG. 3 according to another embodiment, FIG. 5 is a side view of a plate piece of a joint body of another embodiment, and FIG. FIG. 7 is a plan view using the plate piece of FIG. 5, FIG. 7 is a state diagram after the flat pressing process of FIG. 1, FIG. 8 is a side view of FIG. 7, and FIG. 10 to 12 are cross-sectional views of still another embodiment of the present invention. First, in FIGS. 1 to 4, (1) is a schematic view in the longitudinal direction. It is a joint main body composed of a plate piece whose central portion is bent in a U-shape. And a separate main pipe (P) having a flow dividing hole (3) in the peripheral wall portion, the flow dividing hole portion (FIG. 3) or a separate body arranged with an interval (3 ') at opposite ends. The space between the main pipe (P) and the main pipe (P) is inserted near the center of the bottom wall forming the bent portion of the joint body (1). A branch pipe (P 0 ) of the same diameter has a U-shaped upper opening wall (2) portion of the joint body (1) with its end facing the branching hole (3) or the interval (3 ′). To be assembled. In this state, the opening wall (2) located on the mounting side of the branch pipe (P 0 ) is left with a press die having a pair of upper and lower T-shaped grooves to leave the mounting part of the branch pipe (P 0 ). Then, a flat pressing process is performed from the opposite direction to form a flat portion (5) in contact with the flat tube, and the flat portion (5) is brought into close contact with the outer peripheral surface of the main pipe (P) and the outer peripheral surface of the branch pipe (P 0 ). In such a state, or if necessary, the flat portion (5)
Are welded together in a state where they are temporarily attached by spot welding or the like, and these mutually intimate surfaces are collectively solder-welded by heating in a furnace or the like.
また、第５図及び第６図に示すように継手本体（１）
をなす板片の一端側に予め掛止片（６）を一体に突設
し、押圧加工後、或いは同時に板片の他端側に折込んで
掛止すれば、仮付けの必要はなくなり密合状態を保持し
て鑞溶着が容易となる。Also, as shown in FIGS. 5 and 6, the joint body (1)
If a hook piece (6) is integrally protruded in advance at one end side of the plate piece forming the above, and after being pressed or folded at the same time at the other end side of the plate piece, there is no necessity of temporary attachment, and the close fitting is achieved. The condition is maintained and the soldering becomes easy.
尚第４図に示す（４）は必要に応じて主管（Ｐ）の挿
入側附近、或いは枝管（P0）の組付け附近のそれぞれの
外周面に設けた環状突起壁であり、継手本体（１）内部
での位置決めを容易となし、同時に鑞溶着強度の向上を
も図るものである。(4) shown in FIG. 4 is an annular projection wall provided on the outer peripheral surface near the insertion side of the main pipe (P) or near the assembly of the branch pipe (P 0 ) as necessary. (1) It is intended to facilitate the positioning inside and at the same time to improve the soldering strength.
以上説明した実施例では分流孔（３）を有する主管
（Ｐ）又は相互の対向する端部に間隔（３′）を保持し
て配設した別体の主管（Ｐ）並びに主管（Ｐ）と同径の
枝管（P0）を示したが、第10図のように枝管（P0）が主
管（Ｐ）より大径のものや第11図のように枝管（P0）が
主管（Ｐ）より大径のものを配設することも可能で、第
10図実施例では枝管（P0）の端部を分流孔（３）内に臨
ませて枝管（P0）の分流孔（３）に対する位置決めを容
易にすることもできる。更に、第12図に示すように分流
孔のない主管（Ｐ）を継手本体（１）の屈曲部をなす底
壁内部に挿入し、押圧加工や鑞溶着等の前記同様の加工
を施した後に、枝管（P0）よりドリル、キリ等の切削具
（７）を挿入して主管（Ｐ）の周壁に分流孔（３）を穿
設することもできる。尚この際当然ながら切粉等の除去
を行う。In the embodiment described above, the main pipe (P) having the diversion hole (3) or the separate main pipe (P) and the main pipe (P) which are disposed at opposite ends with a space (3 ') therebetween. showed branch pipe having the same diameter (P 0), the branch pipe as FIG. 10 (P 0) is the branch pipe as objects or Figure 11 of larger diameter than the main pipe (P) (P 0) is It is also possible to arrange a pipe with a larger diameter than the main pipe (P).
In Figure 10 embodiment can also facilitate positioning relative to the branch pipe (P 0) of the end portion so as to face the shunt hole (3) in the branch tube (P 0) shunt hole (3). Further, as shown in FIG. 12, the main pipe (P) having no branch hole is inserted into the inside of the bottom wall forming the bent portion of the joint body (1), and subjected to the same processing as described above such as pressing and soldering. Alternatively, a cutting tool (7) such as a drill or a drill may be inserted from the branch pipe (P 0 ) to form a branch hole (3) in the peripheral wall of the main pipe (P). At this time, chips and the like are naturally removed.
［発明の効果］ 以上説明したように本発明による分岐管継手の製造方
法は、特にＵ字状に屈曲した板片からなる継手本体
（１）による前記主管（Ｐ）の挿入及び枝管（P0）の組
付け状態での前記開口壁（２）部の扁平状の押圧加工に
伴って当接せしめ、相互のなす密合面を一括鑞溶着して
成形せしめてなるため、鑞溶着作業上の煩わしさを軽減
して簡易に成形することができ、また、扁平状の押圧加
工による前記密合によって鑞溶着強度を充分となして洩
れの憂いをなくすことができ、扁平部（５）がリブとし
て補強効果を発揮して継手全体の剛性を高め、振動に対
する抵抗力を増すと共に、所望に応じて枝管（P0）が主
管（Ｐ）と同径又は径が異なっても配設を可能となす
等、該枝管側の管径の制限を緩和すると共に、継手本体
（１）としてＵ字状に屈曲した板片により製品コストを
低減し、同時に充分に対処できる比較的薄肉の該板片の
構造によって製品を軽量となすことができる等、極めて
有用な分岐管継手の製造方法である。[Effect of the Invention] As described above, the method for manufacturing a branch pipe joint according to the present invention is particularly applicable to the insertion of the main pipe (P) and the branch pipe (P) by the joint main body (1) composed of a U-shaped bent plate piece. In the assembly state of 0 ), the opening wall (2) is brought into contact with the flat pressing process, and the mutually-closed surfaces are integrally formed by soldering. Can be easily formed by reducing the inconvenience of soldering, and by the above-mentioned close contact by flat pressing, the soldering strength can be made sufficient and the fear of leakage can be eliminated. The ribs exert a reinforcing effect to increase the rigidity of the entire joint, increase the resistance to vibration, and if necessary, arrange the branch pipe (P 0 ) even if the branch pipe (P 0 ) has the same diameter or a different diameter as the main pipe (P). The restriction on the pipe diameter on the side of the branch pipe is eased, and the joint body (1) An extremely useful method of manufacturing a branch pipe joint, for example, the product cost can be reduced by a U-shaped bent piece, and at the same time, the product can be made lightweight by the structure of the relatively thin wall piece which can sufficiently cope with it. It is.
第１図は本発明の一実施例に係る分岐管継手の製造方法
によって製造されるＴ型分岐管継手のカシメ状の押圧加
工前の平面図、第２図は第１図の側面図、第３図は第２
図のＡ−Ａ線の断面図、第４図は他の実施例による第３
図相当図、第５図は他の実施例の継手本体の板片の側面
図、第６図は第５図の板片を用いた平面図、第７図は第
１図の押圧加工後の状態図、第８図は第７図の側面図、
第９図は第７図Ｂ−Ｂ線の断面図、第10図乃至第12図は
夫々本発明の更に他の実施例の断面図、第13図及び第14
図（イ）は従来例によって製造された分岐管継手の一部
切欠き断面図、第14図（ロ）は第14図（イ）のＣ−Ｃ線
の断面図である。 （１）……継手本体、（２）……上側開口部、（３）…
…分流孔、（３′）……間隔、（４）……環状突起壁、
（５）……扁平部、（Ｐ）……主管、（P0）……枝管FIG. 1 is a plan view of a T-shaped branch pipe joint manufactured by a method of manufacturing a branch pipe joint according to an embodiment of the present invention before a crimping press working, FIG. 2 is a side view of FIG. Fig. 3 is the second
FIG. 4 is a sectional view taken along line AA of FIG. 4, and FIG.
FIG. 5 is a side view of a plate piece of the joint body of another embodiment, FIG. 6 is a plan view using the plate piece of FIG. 5, and FIG. FIG. 8 is a side view of FIG. 7,
FIG. 9 is a sectional view taken along the line BB of FIG. 7, FIGS. 10 to 12 are sectional views of still another embodiment of the present invention, and FIGS.
14A is a partially cutaway sectional view of a branch pipe joint manufactured according to a conventional example, and FIG. 14B is a sectional view taken along line CC of FIG. 14A. (1) ... joint body, (2) ... upper opening, (3) ...
... diversion hole, (3 ') ... interval, (4) ... annular projection wall,
(5) Flat section, (P) Main pipe, (P 0 ) Branch pipe
Claims (2)
の該分流孔部、或いは相互の対向する端部に間隔を保持
して配列した別体からなる主管を、板片によってその長
手方向の略中央部をＵ字状に屈曲してなる継手本体の該
屈曲部をなす底壁内部の中央附近に位置して挿入せしめ
ると共に枝管を前記分流孔部或いは間隔部にその端部を
対向して継手本体のＵ字状の上側開口部に組付け、更に
かかる状態にあって枝管の組付け側に位置する前記開口
壁部を、該枝管の組付け部を残して対向する方向から扁
平状に押圧加工を施して相互に当接せしめ、前記主管及
び枝管の外周面とにそれぞれ密合せしめた状態でこれら
相互の密合面を一括鑞溶着して成形せしめてなることを
特徴とする分岐管継手の製造方法。1. A main pipe made of an integral main pipe having a flow dividing hole in a peripheral wall portion, or a main pipe made of a separate body which is arranged at intervals at opposing ends with a plate piece. Of the joint body formed by bending a substantially central portion of the joint body into a U-shape, is inserted near the center inside the bottom wall forming the bent portion, and an end of the branch pipe is opposed to the branch hole or the gap. To the U-shaped upper opening of the joint body, and further, in such a state, the opening wall portion located on the mounting side of the branch pipe is opposed to the branch wall while leaving the mounting portion of the branch pipe. Press-fitting into a flat shape from above to bring them into contact with each other, and in close contact with the outer peripheral surfaces of the main pipe and the branch pipe, respectively, these mutually intimate surfaces are collectively soldered and formed. Characteristic method for manufacturing a branch pipe joint.
手方向の略中央部をＵ字状に屈曲してなる継手本体の該
屈曲部をなす底壁内部に挿入せしめると共に枝管を前記
分流孔部或いは間隔部にその端部を対向して継手本体の
Ｕ字状の上側開口部に組付け、更にかかる状態にあって
枝管の組付け側に位置する前記開口壁部を、該枝管の組
付け部を残して対向する方向から扁平状に押圧加工を施
して相互に当接せしめ、前記主管及び枝管の外周面とに
それぞれ密合せしめた状態でこれら相互の密合面を一括
鑞溶着し、次いで枝管内部に切削具を挿入して主管の周
壁部に分流孔を穿設して成形せしめてなることを特徴と
する分岐管継手の製造方法。2. A main pipe made of a separate body is inserted into a bottom wall forming a bent portion of a joint main body formed by bending a substantially central portion in a longitudinal direction of the joint body into a U-shape by a plate piece, and the branch pipe is connected to the branch pipe. Assembling the U-shaped upper opening of the joint main body with the end thereof facing the branch hole or the space, and further in this state, the opening wall portion located on the side where the branch pipe is assembled, Pressing is performed in a flat shape from the opposing direction while leaving the assembled portion of the branch pipe, and the flat pipe is brought into contact with each other, and is brought into close contact with the outer peripheral surfaces of the main pipe and the branch pipe. And then forming a branch hole in the peripheral wall of the main pipe by shaping and then forming a diversion hole in the peripheral wall of the main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63126844A JP2602060B2 (en) | 1988-05-24 | 1988-05-24 | Manufacturing method of branch pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63126844A JP2602060B2 (en) | 1988-05-24 | 1988-05-24 | Manufacturing method of branch pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01299398A JPH01299398A (en) | 1989-12-04 |
| JP2602060B2 true JP2602060B2 (en) | 1997-04-23 |
Family
ID=14945269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63126844A Expired - Fee Related JP2602060B2 (en) | 1988-05-24 | 1988-05-24 | Manufacturing method of branch pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2602060B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3750684B2 (en) | 2004-05-28 | 2006-03-01 | ダイキン工業株式会社 | T-type branch fitting |
-
1988
- 1988-05-24 JP JP63126844A patent/JP2602060B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01299398A (en) | 1989-12-04 |
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