JPS61126781A - Terminal unit - Google Patents
Terminal unitInfo
- Publication number
- JPS61126781A JPS61126781A JP24845484A JP24845484A JPS61126781A JP S61126781 A JPS61126781 A JP S61126781A JP 24845484 A JP24845484 A JP 24845484A JP 24845484 A JP24845484 A JP 24845484A JP S61126781 A JPS61126781 A JP S61126781A
- Authority
- JP
- Japan
- Prior art keywords
- fixing screw
- terminal
- screw
- holding
- screwdriver
- 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.)
- Granted
Links
Landscapes
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［技術分野］
本発明は、電磁接触器、リレー、ブレーカなどに用いら
れる電線接続用の端子装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a terminal device for connecting electric wires used in electromagnetic contactors, relays, breakers, etc.
［背景技術］
従来、電磁接触器、リレー、ブレーカなどに用いられる
電線接続用の端子装置は、第６図に示すように、ねじ孔
１ａが穿設された端子板１に押さえ板２および固定ねじ
３を用いて電Ｍ４を接続するようになっていた。ところ
で、このような従来例において、丸孔５ａを有する圧着
端子５が取着された電線４を接続する場合、端子板１の
ねじ孔１ａに蝶着されている固定ねじ３を一旦取り外し
、押さえ板２が装置された固定ねじ３を圧着端子５の丸
孔５ａに挿通し、固定ねじ３を端子板１に再螺着するよ
うになっていたが、固定ねじ３の取り外し作又がいる上
、固定ねじ３を所定位置に保持して螺着する必要があり
、電線４の接続作業が面倒になるという問題があった。[Background Art] Conventionally, a terminal device for connecting electric wires used in an electromagnetic contactor, a relay, a breaker, etc., as shown in FIG. The electric M4 was connected using screw 3. By the way, in such a conventional example, when connecting the electric wire 4 to which the crimp terminal 5 having the round hole 5a is attached, the fixing screw 3 hinged to the screw hole 1a of the terminal board 1 is removed once and held down. The fixing screw 3 with the plate 2 attached thereto was inserted into the round hole 5a of the crimp terminal 5, and the fixing screw 3 was screwed onto the terminal plate 1 again. , it is necessary to hold the fixing screw 3 in a predetermined position and screw it in, which poses a problem in that the work of connecting the electric wire 4 becomes troublesome.
〔発明の目的）
本発明は上記の点に鑑みて為されたものであり、その目
的とするところは、丸孔を有する圧着端子が取着された
電線の接続作業が容易にできる端子ｍ１ｌｌを提供する
ことにある。[Object of the Invention] The present invention has been made in view of the above-mentioned points, and its object is to provide a terminal m1ll that can easily connect electric wires to which crimp terminals having round holes are attached. It is about providing.
［発明の開示１
（実施例１）
第１図乃至第３図は本発明を電磁接触器に適用した一実
施例を示すものであり、電磁接触器は６字型の固定鉄芯
１０と、固定鉄芯１０の中央片１０ｍに巻装された励磁
コイル１１と、上下方向に移動自在で復帰ばね（図示せ
ず）にて上方に付勢されたＥＴ型の可動鉄芯１２と、可
動鉄芯１２の上部に取着された可動枠１３と、可動枠１
３の上端部に取着され先端にそれぞれ可動接点１５ａ、
１５ｂが設けられた可動接息板１４ｍ、１４ｂと、固定
接点１７ｍ、１７ｂが設けられた固定端子板１６ａ、１
６ｂと、可動ｉ１Ｊ、１４ａ、 １４ｂおよび固定按
Ｊ７．１６ｍ 、 １６ｂにて形成されるＮｏ接、ｉ
ｌＢｍ。[Disclosure of the Invention 1 (Example 1) Figures 1 to 3 show an example in which the present invention is applied to an electromagnetic contactor, and the electromagnetic contactor has a fixed iron core 10 in the shape of a 6-shape, An excitation coil 11 wound around a 10 m center piece of a fixed iron core 10, an ET-type movable iron core 12 that is vertically movable and biased upward by a return spring (not shown), and a movable iron A movable frame 13 attached to the upper part of the core 12 and a movable frame 1
A movable contact 15a is attached to the upper end of 3, and a movable contact 15a is attached to the tip, respectively.
Movable breath contact plates 14m, 14b provided with contact points 15b, and fixed terminal plates 16a, 1 provided with fixed contacts 17m, 17b.
6b, the No contact formed by the movable i1J, 14a, 14b and the fixed armrest J7.16m, 16b, i
lBm.
ＮＣ接点１８ｂに接烹圧を発生させるフィルばね１９と
、ボディ２０＠およびカバー２０６よりなるハウジング
２０とで構成され、フィル端子１１ａに励磁電圧が印加
されると、可動鉄芯１２が復帰１；
ばねの弾発力に抗して固定鉄芯１１△吸引され、ＮＣ接
点１８ｂがオンするとともに、ＮＣ接点１８ｂがオフす
るようになっている。ところで、ハウジング２０の両肩
部には本発明に係る端子装置が設けられており、この端
子装置は、ハウジング２０の端子部に設けられた上記固
定端子板１６ａ１１６ｂと、固定端子板１６ａ、１６ｂ
に穿設されたねじ孔１１に蝶着される磁性体よりなる固
定ねじ３と、固定ねじ３の頭部近傍に挿着される押さえ
板２と、固定端子板１６ａ、１６ｂおよび固定ねじ３の
上方に覆着される感電防止用の端子カバー２１とで形成
され、この端子カバー２１には、固定ねじ３の上方に対
応する位置にドライバーを挿入する挿入孔２２が穿設さ
れるとともに、この挿入孔２２の下方開口縁に固定ねじ
３の頭部を保持する複数（実施例では４個）の引掛爪２
３が突設されており、引掛爪２３にで固定ねじ３の頭部
が保持されたときに固定ねじ３のねじ部先端と固定端子
板１６ａ、１６ｂとの間に過当な間隙Ｄ（圧着端子５の
厚さよりも若干大きい間隙）が形成されるように固定ね
じ３の長さお上り引掛爪２３の形成位置が設定され、ド
ライバーにて固定ねじ３のｍｓを下方に押したときに固
定ねじ３が引掛爪２３から外れるように引掛爪２３に弾
性を付与しである。また、端子カバー２１の下面にはド
ライバーにて＠部が下方に押されて保持が解除された固
定ねじ３の移動方向を規制（真下に落下するように）す
る〃イヒ片２７ａ、２７ｂが突設されており、実施例に
あっては、固定ねじ３に一体的に装着された押さえ板２
の一方の対向する側面にそれぞれ摺接するように４４１
片２７ｍ、２７ｂが形成されており、押さえ板２の他方
の対向する側面にはそれぞれハウジングの端子部に突設
されている仕切り！！２２８にて兼用される１４１片が
摺接するようになっている。また、端子カバー２１の両
ｇＡ部には、ハウジング２０の端子部の両ｓｇに形成さ
れたガイド溝２４に摺動自在に係合される突条２１ａが
突設されており、端子カバー２１は水平方向（矢印Ｘ）
にスライドさせて着脱されるようになっており、端子カ
バー２１の先端部にはカバー２０ｂｔ二突設された突壁
２５に係合する抜は止め用の係合爪２６が設けられてい
る。なお、実施例にあっては、固定ねじ３の保持部を引
掛爪２３にて形成しているが、固定ねじ３と磁性体にで
形成し、永久磁石を用いて形成しても良い。It is composed of a fill spring 19 that generates contact pressure to the NC contact 18b, and a housing 20 consisting of a body 20@ and a cover 206, and when an excitation voltage is applied to the fill terminal 11a, the movable iron core 12 returns 1; The fixed iron core 11Δ is attracted against the elastic force of the spring, and the NC contact 18b is turned on and the NC contact 18b is turned off. By the way, a terminal device according to the present invention is provided on both shoulders of the housing 20, and this terminal device includes the fixed terminal plate 16a116b provided at the terminal portion of the housing 20, and the fixed terminal plates 16a, 16b.
A fixing screw 3 made of a magnetic material is hinged to a screw hole 11 drilled in the fixing screw 3, a holding plate 2 is inserted near the head of the fixing screw 3, a fixing terminal plate 16a, 16b, and a fixing screw 3. The terminal cover 21 is provided with an insertion hole 22 into which a screwdriver is inserted at a position corresponding to the upper part of the fixing screw 3. A plurality of (four in the embodiment) hooking claws 2 that hold the head of the fixing screw 3 at the lower opening edge of the insertion hole 22
3 protrudes, and when the head of the fixing screw 3 is held by the hook 23, an excessive gap D (crimping terminal The length of the fixing screw 3 and the formation position of the catch claw 23 are set so that a gap slightly larger than the thickness of the fixing screw 3 is formed, and when the ms of the fixing screw 3 is pushed downward with a screwdriver, the fixing screw 3 is provided with elasticity to the hooking claw 23 so that it comes off from the hooking claw 23. In addition, on the lower surface of the terminal cover 21, there are protruding pieces 27a and 27b that restrict the movement direction of the fixing screw 3 (so that it falls straight down) when the @ part is pushed downward with a screwdriver and the holding is released. In the embodiment, a holding plate 2 is integrally attached to the fixing screw 3.
441 so as to be in sliding contact with one opposing side surface of the
Pieces 27m and 27b are formed, and partitions are provided on the other opposing side surface of the holding plate 2, respectively, protruding from the terminal portion of the housing! ! 141 pieces which are also used as 228 are in sliding contact with each other. Further, protrusions 21a are provided on both gA portions of the terminal cover 21 so as to be slidably engaged with guide grooves 24 formed on both the terminal portions sg of the housing 20. Horizontal direction (arrow X)
The terminal cover 21 is attached and detached by sliding the terminal cover 21, and an engaging claw 26 for preventing removal is provided at the tip of the terminal cover 21 to engage with a projecting wall 25 provided in two protrusions on the cover 20b. In the embodiment, the holding portion of the fixing screw 3 is formed by the hook 23, but it may be made of the fixing screw 3 and a magnetic material, and may also be formed using a permanent magnet.
以下、実施例の動作について説明する。固定ねじ３は第
１図に示すように端子カバー２１に設けられた引掛爪２
３に頭部が引掛係合されて、固定端子板１６ａ、１６ｂ
のねじ孔１ａの上方に吊り下げられた状態で保持されて
いる。ここに、端子カバー２１へ固定ねヒ３を装着する
場合には、端子カバー２１の下方から引掛爪２３を押し
広げながら固定ねじ３を引掛爪２３間に挿入し、引掛爪
２３が固定ねじ３の首下部に係合させるようにしている
。なお、実施例にあっては固定ねじ３の頭部近傍に脱落
しないように挿着されている押さえ板２の幅がドライバ
ーの挿入孔２２および引掛爪２３の間隔よりも大きくな
っているので、固定ねヒ３は端子カバー２１に一体化さ
れ、単一ブロックとして取り扱えることになり、部品点
数を少なくすることができるようになっている。この状
態において、固定ねじ３のねじ部の先端と固定端子板１
６ａ、１６ｂとの間には適当な間隙りが形成されており
、圧着端子５が収着された電ｌｌＡ４を接続する場合に
は、まず、この間隙りを介して圧着端子５が挿入される
。次に、圧着端子５の丸孔５ａを固定端子板１６ａ、１
６ｂのねじ孔１ａに合致させ、端子カバー２１の挿入孔
２２を通して挿入されるドライバーの先端にて固定ねじ
３を下方に押すと、弾性が付与されている引掛爪２３が
外方にたわんで引掛爪２３による固定ねじ３の保持が強
制的に解除されて落下し、固定ねじ３のねじ部の先端が
圧着端子５の丸孔５ａを通して固定端子板１６ａ。The operation of the embodiment will be described below. The fixing screw 3 has a hook 2 provided on the terminal cover 21 as shown in FIG.
3, the head is hooked and engaged with the fixed terminal plates 16a, 16b.
It is held in a suspended state above the screw hole 1a. When attaching the fixing screws 3 to the terminal cover 21, insert the fixing screws 3 between the hooks 23 while pushing out the hooks 23 from below the terminal cover 21, so that the hooks 23 are attached to the fixing screws 3. It is designed to engage the lower part of the neck. In addition, in the embodiment, the width of the holding plate 2, which is inserted near the head of the fixing screw 3 so as not to fall off, is larger than the interval between the screwdriver insertion hole 22 and the hooking claw 23. The fixing screw 3 is integrated into the terminal cover 21 and can be handled as a single block, thereby reducing the number of parts. In this state, the tip of the threaded part of the fixing screw 3 and the fixed terminal plate 1
6a and 16b, and when the crimp terminal 5 connects the sorbed electric current 4, the crimp terminal 5 is first inserted through this gap. . Next, the round holes 5a of the crimp terminals 5 are inserted into the fixed terminal plates 16a, 1.
When the fixing screw 3 is aligned with the screw hole 1a of the terminal cover 21 and pushed downward with the tip of a screwdriver inserted through the insertion hole 22 of the terminal cover 21, the elastic hook 23 bends outward and is hooked. The holding of the fixing screw 3 by the claw 23 is forcibly released and it falls, and the tip of the threaded portion of the fixing screw 3 passes through the round hole 5a of the crimp terminal 5 and fixes the fixed terminal plate 16a.
１６ｂのねじ孔１ａの上端縁に当接する。このと外、固
定ねじ３は端子カバー２１に突設されているガイド片２
７ａ、２７ｂおよび仕切り壁２８に沿って真っ直ぐに落
下するように誘導され、固定ねじ３のねじ部の先端がね
じ孔１ａに若干食い込み、固定ねじ３に装着されている
押さえ板２の側面がガイド片２７ａ、２７ｂおよび仕切
り壁２８にて支持された状態で安定に保持されることに
なる。16b comes into contact with the upper edge of the screw hole 1a. On the other hand, the fixing screw 3 is connected to the guide piece 2 protruding from the terminal cover 21.
7a, 27b and the partition wall 28, the tip of the threaded portion of the fixing screw 3 slightly bites into the screw hole 1a, and the side surface of the holding plate 2 attached to the fixing screw 3 is guided. It is stably held while being supported by the pieces 27a, 27b and the partition wall 28.
この状態でドライバーを回転させれば固定ねじ３および
押さえ板２によって圧着端子５が固定端子板１６ｍ、１
６ｂに螺着される。したがって、従来例のように、電線
４を接続するに先立って固定ねじ３を取り外す必要がな
く、しかも、ドライバーにて固定ねじ３を押し下げるだ
けで固定ねじ３を所定位置に確実に誘導して安定に保持
することかで軽、電線４の接続作業が容易にできるよう
になっている。なお、実施例のように内側の７４１片２
７ｂを固定端子板１６ａ、１６ｂに接するまで！艮して
おけば、防塵壁として利用できて好都合である。If you rotate the screwdriver in this state, the crimp terminal 5 will be moved to the fixed terminal plates 16m and 1 by the fixing screw 3 and the holding plate 2.
6b. Therefore, unlike the conventional example, there is no need to remove the fixing screw 3 before connecting the electric wire 4, and moreover, by simply pushing down the fixing screw 3 with a screwdriver, the fixing screw 3 is reliably guided to the specified position and stabilized. By holding it in place, it is possible to easily connect the electric wires 4. In addition, as in the example, the inner 741 piece 2
7b until it touches the fixed terminal plates 16a and 16b! If it is covered, it can be conveniently used as a dustproof wall.
（実施例２）
第４図お上びＷ４５図は他の実施例を示すもので、内側
の７４１片２７ｂの長さを短くして７４１片２７ｂの下
端が電線接続状態における固定ねじ３の上端よりも上方
に位置するように設定したものであり、電線４を接続し
た状！！であっても端子カバー２１をスライドさせて任
意に取り外すことができるようになっている。なお、実
施例にあっては、２枚の圧着端子５が固定ねじ３にて固
定端子板１Ｇ＆、１６ｂ１．ｌ：ＩＩ続された状態で端
子カバー２１を取り外すことができるようにｊイド片２
７ｍ、２７ｂの長さが設定されており、また、７４１片
２７ｂの長さおよび固定ねじ３の良さは、固定ねじ３の
ねじ部の先端がねじ孔１ａに当接した状態において押さ
え板２の側面に１４１片２７ｂが摺接しているように設
定されることは言うまでもない。(Embodiment 2) Fig. 4 and Fig. W45 show another embodiment, in which the length of the inner 741 piece 27b is shortened so that the lower end of the 741 piece 27b is the upper end of the fixing screw 3 when the wire is connected. It is set so that it is located above the , and the electric wire 4 is connected! ! However, the terminal cover 21 can be slid and removed as desired. In the embodiment, the two crimp terminals 5 are attached to the fixed terminal plates 1G&, 16b1. l:II In order to be able to remove the terminal cover 21 in the connected state,
7m, the length of 27b is set, and the length of 741 piece 27b and the quality of fixing screw 3 are as follows: Needless to say, the 141 piece 27b is set to be in sliding contact with the side surface.
［発明の効果１
本発明は上述のように、ハウソングの端子部に配設され
た端子板に穿設されたねじ孔に電線接続用の固定ねじを
螺着してなる端子装置において、端子板および固定ねじ
の上方に覆着される端子カバーの固定ねじの上方に対応
する位置にドライバーを挿入する挿入孔を穿設するとと
もに、該挿入孔の下方開口縁に固定ねじの頭部を保持す
る保持部を形成し、上記保持部にて固定ねじの頭部が保
持されたときに固定ねじのねじ部先端と端子板との間に
過当な間隙が形成されるように固定ねじの！にさおよび
保持部の位置を設定するとともに、ドライバーにて頭部
が下方に押されて保持が解除された固定ねじの移動方向
を規制する１４１片を端子カバーあるいはハフソングに
設けたものであり、端子カバーに設けた保持部によって
ねじ部先端と端子板との間に適当な間隙が形成されるよ
うに固定ねじが保持されているので、このｒＩ４隙を介
して圧着端子を挿入して固定ねじを端子板のねじ孔に蝶
着することができ、丸孔を有する圧着端子が取着された
電線の接続作業が容易にできるという効果があり、また
、固定ねじの移動方向を規制する１４１片を端子カバー
あるいはハウソングに設けているので、固定ねじを所定
位置に確実に誘導でき、しかも固定ねじの倒れや傾きが
防止できて安定に保持でき固定ねじの螺着がより容易に
なるという効果がある。[Effects of the Invention 1] As described above, the present invention provides a terminal device in which a fixing screw for connecting an electric wire is screwed into a screw hole drilled in a terminal plate disposed in a terminal portion of a Housong. and an insertion hole for inserting a screwdriver at a position corresponding to the upper part of the fixing screw of the terminal cover covered above the fixing screw, and holding the head of the fixing screw at the lower opening edge of the insertion hole. A holding portion is formed, and the fixing screw is fixed so that when the head of the fixing screw is held by the holding portion, an excessive gap is formed between the threaded end of the fixing screw and the terminal plate. A piece is provided on the terminal cover or huff song to set the position of the screw and the holding part, and to regulate the direction of movement of the fixing screw whose head is pushed downward with a screwdriver and released from holding. The fixing screw is held by the holding part provided on the terminal cover so that an appropriate gap is formed between the tip of the screw part and the terminal plate, so insert the crimp terminal through this rI4 gap and tighten the fixing screw. can be hinged to the screw hole of the terminal board, which has the effect of making it easier to connect electric wires to which crimp terminals with round holes are attached.In addition, the 141 piece that regulates the moving direction of the fixing screw Since it is provided on the terminal cover or housing song, the fixing screw can be reliably guided to the specified position, and it also prevents the fixing screw from falling or tilting, allowing it to be held stably and making it easier to screw in the fixing screw. be.
第１図は本発明一実施例の断面図、第２図（ａ）（ｂ）
は同上の端子カバーの上面図および下面図、第３図（ａ
）（ｂ）（ｃ）は同上の端子カバーに固定ねじを装着し
た状態を示す上面図、下面図および断面図、第４図は他
の実施例の断面図、第５図は同上の要部断面図、１１４
６図は従来例の分解斜視図である。
１．１６ａ、１６ｂは端子板、２は押さえ板、３は固定
ねじ、４は電線、５は圧着端子、２０はハウゾング、２
１は端子カバー、２７ｉ、２７ｂはガイド片である。Figure 1 is a sectional view of one embodiment of the present invention, Figures 2 (a) and (b)
are top and bottom views of the same terminal cover as above, and Figure 3 (a).
), (b), and (c) are a top view, a bottom view, and a sectional view showing the state in which the fixing screw is attached to the terminal cover of the above, Fig. 4 is a sectional view of another embodiment, and Fig. 5 is the main part of the same as the above. Cross section, 114
FIG. 6 is an exploded perspective view of a conventional example. 1.16a, 16b are terminal boards, 2 is a holding plate, 3 is a fixing screw, 4 is an electric wire, 5 is a crimp terminal, 20 is a housing, 2
1 is a terminal cover, and 27i and 27b are guide pieces.
Claims (1)
れたねじ孔に電線接続用の固定ねじを螺着してなる端子
装置において、端子板および固定ねじの上方に覆着され
る端子カバーの固定ねじの上方に対応する位置にドライ
バーを挿入する挿入孔を穿設するとともに、該挿入孔の
下方開口縁に固定ねじの頭部を保持する保持部を形成し
、上記保持部にて固定ねじの頭部が保持されたときに固
定ねじのねじ部先端と端子板との間に適当な間隙が形成
されるように固定ねじの長さおよび保持部の位置を設定
するとともに、ドライバーにて頭部が下方に押されて保
持が解除された固定ねじの移動方向を規制するガイド片
を端子カバーあるいはハウジングに設けたことを特徴と
する端子装置。(1) In a terminal device in which a fixing screw for connecting electric wires is screwed into a screw hole drilled in a terminal plate provided in the terminal part of a housing, the terminal plate and the fixing screw are covered above. An insertion hole for inserting a screwdriver is formed at a position corresponding to the upper part of the fixing screw of the terminal cover, and a holding part for holding the head of the fixing screw is formed at the lower opening edge of the insertion hole. Set the length of the fixing screw and the position of the holding part so that when the head of the fixing screw is held with a screwdriver, an appropriate gap is formed between the threaded end of the fixing screw and the terminal board. 1. A terminal device characterized in that a guide piece is provided on a terminal cover or housing for regulating the direction of movement of a fixing screw whose head is pushed downward and released from holding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24845484A JPS61126781A (en) | 1984-11-24 | 1984-11-24 | Terminal unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24845484A JPS61126781A (en) | 1984-11-24 | 1984-11-24 | Terminal unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61126781A true JPS61126781A (en) | 1986-06-14 |
| JPH0367312B2 JPH0367312B2 (en) | 1991-10-22 |
Family
ID=17178370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24845484A Granted JPS61126781A (en) | 1984-11-24 | 1984-11-24 | Terminal unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61126781A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56146366U (en) * | 1980-04-03 | 1981-11-04 | ||
| JPS5841977U (en) * | 1981-09-14 | 1983-03-19 | 松下電工株式会社 | terminal device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5841977B2 (en) * | 1973-07-09 | 1983-09-16 | 株式会社井上ジャパックス研究所 | wire cutting machine |
-
1984
- 1984-11-24 JP JP24845484A patent/JPS61126781A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56146366U (en) * | 1980-04-03 | 1981-11-04 | ||
| JPS5841977U (en) * | 1981-09-14 | 1983-03-19 | 松下電工株式会社 | terminal device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0367312B2 (en) | 1991-10-22 |
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