JP3237088B2 - Automatic door anti-vibration device - Google Patents
Automatic door anti-vibration deviceInfo
- Publication number
- JP3237088B2 JP3237088B2 JP35386893A JP35386893A JP3237088B2 JP 3237088 B2 JP3237088 B2 JP 3237088B2 JP 35386893 A JP35386893 A JP 35386893A JP 35386893 A JP35386893 A JP 35386893A JP 3237088 B2 JP3237088 B2 JP 3237088B2
- Authority
- JP
- Japan
- Prior art keywords
- door
- vibration
- base
- rubber
- driving device
- 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
- 239000000463 material Substances 0.000 claims description 27
- 238000013016 damping Methods 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 3
- 239000011359 shock absorbing material Substances 0.000 claims description 2
- 239000003566 sealing material Substances 0.000 claims 1
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 230000000644 propagated effect Effects 0.000 description 3
- 230000005574 cross-species transmission Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Landscapes
- Support Devices For Sliding Doors (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動扉の作動により発
生する駆動装置の振動や、戸車の走行振動の伝播を防止
する防振装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration device for preventing vibration of a driving device generated by the operation of an automatic door and propagation of running vibration of a door roller.
【０００２】[0002]
【従来の技術】自動扉は、図３に示すように、建物の開
口部に設置され、扉１、１が建物の開口部に沿い水平移
動することにより開口部を開閉する。この扉１、１が戸
車を介して懸架されその移動を水平方向に拘束するレー
ル部材や、扉１、１を移動させる駆動装置は、開口部上
方の無目２内に設けられている。2. Description of the Related Art As shown in FIG. 3, an automatic door is installed at an opening of a building, and the doors 1, 1 open and close the opening by moving horizontally along the opening of the building. A rail member that suspends the doors 1 and 1 via a door wheel and restrains the movement of the doors 1 and 2 in a horizontal direction and a driving device that moves the doors 1 and 1 are provided in the blind 2 above the opening.
【０００３】このような自動扉は、マンション等の居住
用建物の出入口に設置された場合、自動扉の作動により
発生するモータ、減速機等からなる駆動装置の振動やレ
ール上を走行する戸車の走行振動が建物の躯体を伝わっ
て階上の居室に伝播し、階上の居室に住む人の耳につき
不快感を与えるという問題を有していた。特に、静かな
夜間においては、人が出入りする度に自動扉の振動が響
き大変耳障りであった。When such an automatic door is installed at the entrance of a residential building such as an apartment, vibration of a driving device including a motor and a speed reducer generated by the operation of the automatic door, and a door pulley running on a rail. There was a problem that the traveling vibration propagated through the building frame and propagated to the living room on the floor, giving a feeling of discomfort to the ears of those living in the living room on the floor. In particular, during quiet nights, the vibration of the automatic door reverberated every time people came in and out, which was very annoying.
【０００４】そこで、このような振動の伝播を防止する
ために、実開昭６１−１１７８７７号に示すような防振
装置が提案されている。この自動扉の防振装置は、図６
に示すように、レール部材５３や駆動装置５４が内設さ
れた縦長のエンジンケース５１を一体型又は分離型のコ
字状断面の緩衝材（防振ゴム）５２によって弾性支持し
て無目５５内に設置するものである。この緩衝材５２に
よって、モータ、減速機等からなる駆動装置５４や走行
する戸車５６から発生する振動及び振動音が無目５５か
ら天井を通して階上の居室に波及することを防止してい
る。Therefore, in order to prevent such propagation of vibration, a vibration isolator as disclosed in Japanese Utility Model Laid-Open No. 61-117877 has been proposed. The vibration isolator for this automatic door is shown in FIG.
As shown in FIG. 5, a vertically elongated engine case 51 in which a rail member 53 and a driving device 54 are provided is elastically supported by a cushioning material (anti-vibration rubber) 52 having a U-shaped cross section of an integral type or a separated type. It is set up inside. The cushioning member 52 prevents the vibration and the vibration noise generated from the driving device 54 including a motor, a speed reducer and the like and the traveling door wheel 56 from spreading from the blind 55 to the living room on the floor through the ceiling.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記従
来の自動扉の防振装置は、エンジンケース５１全体を覆
うコ字状断面の緩衝材５２によって無目５５に弾性支持
する構造であるので、扉５７の重量を受けるエンジンケ
ース５１の下側に位置する緩衝材５２ａは圧縮荷重を受
け、エンジンケース５１の上側に位置する緩衝材５２ｂ
はエンジンケース５１に取り付けたモータ等の駆動装置
５４の重量によって引っ張り荷重を受け、コ字状断面の
緩衝材５２全体が均一に荷重を受けないという問題を有
していた。防振ゴム等の緩衝材は、圧縮荷重を受けた状
態で使用した場合に振動を伝えにくいので、上記のよう
に緩衝材５２に対して均一に圧縮荷重が作用しない状態
で設けるものでは、緩衝材５２が効率良く振動及び振動
音を抑えることができないという問題を有している。However, the conventional vibration damping device for an automatic door has a structure in which the cushioning member 52 having a U-shaped cross section that covers the entire engine case 51 elastically supports the door 55 in a blind manner. The cushioning member 52a located on the lower side of the engine case 51 receiving the weight of 57 receives a compressive load, and the cushioning member 52b located on the upper side of the engine case 51.
Has a problem that a tensile load is applied due to the weight of a driving device 54 such as a motor attached to the engine case 51, and the entire cushioning member 52 having a U-shaped cross section is not uniformly loaded. A cushioning material such as a vibration-proof rubber is unlikely to transmit vibration when used under a compressive load. The material 52 has a problem that vibration and vibration noise cannot be suppressed efficiently.
【０００６】本発明は、従来の技術の有するこのような
問題点に鑑みてなされたものであり、その目的とすると
ころは、振動及び振動音の伝播を効率良く低下する自動
扉の防振装置を提供しようとするものである。The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a vibration damping device for an automatic door which efficiently reduces vibration and propagation of vibration noise. It is intended to provide.
【０００７】[0007]
【０００８】建物の開口部を水平移動して開閉する扉
と、該扉が戸車を介して懸架されるレール部材と、前記
扉を移動させる駆動装置と、前記レール部材及び前記駆
動装置を前記開口部上方の無目内に支持するベースとを
備えた自動扉であって、前記駆動装置及び前記レール部
材はそれぞれアングル材及び支持部材を介してベースに
支持されるものであり、前記駆動装置の重量による縦方
向の荷重を受けて圧縮される防振用ゴム等の緩衝材と、
前記駆動装置の重量による横方向の荷重を受けて圧縮さ
れる別の防振用ゴム等の緩衝材とによって弾性支持さ
れ、無目内で水平に延びるアングル材を介して前記駆動
装置を前記ベースに支持することを特徴とする。また、
前記アングル材の水平移動を規制するストッパ部材を前
記ベースに設けてあることが望ましく、さらに、前記扉
の重量による縦方向の荷重を受けて圧縮される防振用ゴ
ム等の緩衝材と、前記扉の重量による横方向の荷重を受
けて圧縮される別の防振用ゴム等の緩衝材とによって前
記ベースに弾性支持される支持部材を介して前記レール
部材を前記ベースに支持することがより望ましい。 A door that opens and closes by horizontally moving an opening of a building
And a rail member on which the door is suspended via a door roller,
A drive device for moving the door, the rail member and the drive
A base for supporting the moving device in the blind above the opening.
An automatic door with the drive device and the rail member is intended to be supported on the base via the angle member and the support member respectively, Ru compressed undergoing longitudinal loads due to the weight of the drive unit a buffer material, such as anti mutabilis rubber,
Elastic support is by the buffer material such as rubber for a different vibration isolation that will be compressed under a load in the lateral direction due to the weight of the drive equipment
And the drive through an angle material extending horizontally within the eye
A device is supported on the base. Also,
Move the stopper member that regulates the horizontal movement of the angle material forward.
Preferably, the door is provided on the base.
Anti-vibration rod that is compressed by the vertical load due to the weight of the
And the lateral load due to the weight of the door.
With another cushioning material such as rubber for vibration isolation
The rail via a support member elastically supported by the base.
More desirably, a member is supported on the base.
【０００９】[0009]
【作用】上記手段によると、防振ゴム等の緩衝材は圧縮
荷重を受ける部分のみに局所的に設けられているので、
それぞれの防振ゴム等の緩衝材が圧縮荷重を受けた状
態、即ち、防振ゴム等の緩衝材が効率良く機能する状態
にあり、モータ、減速機等からなる駆動装置やレールを
走行する戸車から発生する振動や振動音が無目から天井
を通して階上の居室に波及することを効率良く防止す
る。According to the above-mentioned means, since the cushioning material such as the vibration isolating rubber is locally provided only at the portion receiving the compressive load,
A state in which each cushioning material such as a vibration-proof rubber is subjected to a compressive load, that is, a state in which the cushioning material such as a vibration-proof rubber functions efficiently, and a driving device including a motor, a speed reducer, etc. It is possible to efficiently prevent vibrations and vibration noises generated from the spillover from passing through the ceiling to the living room on the floor.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面を参照しつつ説
明する。図１は、本発明の防振装置が実施された自動扉
の無目２内の側面断面図であり、図２は図１の正面断面
図である。実施例では、片引戸の自動扉を例に取り説明
するが、図３に示す両引戸においても同様の効果が得ら
れる。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of an automatic door in which an anti-vibration device of the present invention is implemented, and FIG. 2 is a front sectional view of FIG. In the embodiment, description will be made by taking an example of an automatic door with a single sliding door, but the same effect can be obtained with the double sliding door shown in FIG.
【００１１】図１において、１は扉、２は無目、３はレ
ール、４は戸車、５は駆動装置、６はベース、７から１
１は防振ゴム等の緩衝材である。In FIG. 1, 1 is a door, 2 is a blind, 3 is a rail, 4 is a door car, 5 is a driving device, 6 is a base, and 7 to 1
Reference numeral 1 denotes a cushioning material such as an anti-vibration rubber.
【００１２】扉１は、吊り金具１８に設けられた戸車４
を介してレール３に懸架され、建物の開口部に沿い水平
移動するように拘束されている。レール３はその底面と
一側面を支持するように、図２に示すように無目２内に
水平方向に点在して設けられた支持部材１６を介して前
記ベース６に支持されている。吊り金具１８は、駆動装
置５のベルト１２との連結部１８ａを有している。駆動
装置５は、ベルト１２、プーリ１３、減速機を有するモ
ータからなる駆動部と、図２に示すコトローラ１４を備
え、その上面と一側面を覆うように前記無目２内に水平
に延びるＬ型のアングル材１５を介してベース６に支持
されている。ベース６は、駆動装置５及びレール３部材
を支持するための補助ベース６ａ及び６ｂを有してい
る。The door 1 is a door wheel 4 provided on a hanging bracket 18.
And is constrained to move horizontally along the opening of the building. As shown in FIG. 2, the rail 3 is supported by the base 6 via a support member 16 which is provided horizontally and dotted in the blind 2 so as to support the bottom surface and one side surface. The hanging bracket 18 has a connecting portion 18 a with the belt 12 of the driving device 5. The driving device 5 includes a driving unit including a belt 12, a pulley 13, and a motor having a speed reducer, and a controller 14 shown in FIG. 2, and extends horizontally into the blind 2 so as to cover its upper surface and one side surface. It is supported on the base 6 via a mold angle member 15. The base 6 has auxiliary bases 6a and 6b for supporting the driving device 5 and the rail 3 member.
【００１３】補助ベース６ａは、前記アングル材１５の
両端で、隙間δを開けて上面と一側面の局所で連結され
ている。この連結部で駆動装置５の重量による圧縮荷重
を受ける側に防振ゴム等の緩衝材７、８が設けられてお
り、緩衝材７が駆動装置５全体の重量による縦方向の圧
縮荷重を受け、緩衝材８が駆動装置５全体の重量による
横方向の圧縮荷重を受ける。緩衝材７は図４に示すよう
に、その上下面から***する４つの弾性パッド７ａを一
体成形してなり、中央の貫通孔７ｂを通る通しボルト２
０とナット２１により前記アングル材１５と裏板２２と
の間に支持される。尚、アングル材１５は、図２に示す
ように、両端のベース６に固定した弾性ゴムを有するス
トッパ部材１７によって水平方向への移動が規制され、
モータが駆動する時の反力によって左右に振れるのを防
止されている。The auxiliary base 6a is locally connected to the upper surface and one side surface with a gap δ at both ends of the angle member 15. On the side of the connecting portion that receives the compressive load due to the weight of the driving device 5, cushioning materials 7, 8 such as vibration isolating rubber are provided, and the cushioning material 7 receives the vertical compressive load due to the weight of the entire driving device 5. The cushioning member 8 receives a compressive load in the lateral direction due to the weight of the entire driving device 5. As shown in FIG. 4, the cushioning member 7 is formed by integrally molding four elastic pads 7a protruding from the upper and lower surfaces thereof, and a through bolt 2 passing through a central through hole 7b.
0 and a nut 21 support between the angle member 15 and the back plate 22. The horizontal movement of the angle member 15 is regulated by stopper members 17 having elastic rubber fixed to the bases 6 at both ends, as shown in FIG.
It is prevented from swinging left and right due to the reaction force when the motor is driven.
【００１４】補助ベース６ｂは、前記無目２内に点在し
て設けられた支持部材１６をその底面と一側面とで支持
するように、図２に示すように、無目２内に水平に延び
たレール受けである。この補助ベース６ｂの支持部に扉
１の重量による圧縮荷重を受ける側に防振ゴム等の緩衝
材９、１０、１１が設けられており、緩衝材１１が扉１
の重量による縦方向の圧縮荷重を受け、緩衝材９、１０
が扉１の重量による横方向の圧縮荷重を受ける。緩衝材
１０、１１は図５に示すようにＬ字状の裏板２３と支持
部材１６に一体成形されており、ボルト２４、２５によ
り、ベース６及び補助ベース６ｂに固定される。As shown in FIG. 2, the auxiliary base 6b horizontally supports the supporting members 16 scattered in the blind 2 as shown in FIG. It is a rail support that has been extended. The supporting portion of the auxiliary base 6b is provided with cushioning materials 9, 10, and 11 such as vibration-proof rubber on the side receiving a compressive load due to the weight of the door 1, and the cushioning material 11 is
Receiving a vertical compressive load due to the weight of
Receive a lateral compressive load due to the weight of the door 1. As shown in FIG. 5, the cushioning members 10 and 11 are formed integrally with the L-shaped back plate 23 and the support member 16, and are fixed to the base 6 and the auxiliary base 6b by bolts 24 and 25.
【００１５】このような構造の自動扉は、コントローラ
１４からの指令によりモータが作動し、プーリ１３、１
３が回転し、ベルト１２が移動する。このベルト１２の
移動により扉１が建物の開口部を開閉する。このとき、
防振ゴム等の緩衝材７〜１１は圧縮荷重を受ける部分の
みに局所的に設けられているので、それぞれの緩衝材７
〜１１が圧縮荷重を受けた状態にあり、即ち、防振ゴム
等の緩衝材が効率良く機能する状態にあり、減速機を有
するモータ、ベルト１２等からなる駆動装置５やレール
３を走行する戸車４から発生する振動や振動音が無目か
ら天井を通して階上の居室に波及することを効率良く防
止する。The automatic door of such a structure, the motor is actuated by a command from co down controller <br/> 14, pulley 13, 1
3 rotates, and the belt 12 moves. The door 1 opens and closes the opening of the building by the movement of the belt 12. At this time,
Since the cushioning members 7 to 11 such as rubber vibration insulators are locally provided only in the portions that receive the compressive load, the respective cushioning members 7 to 11 are provided.
11 are in a state of receiving a compressive load, that is, a cushioning material such as a vibration-proof rubber is in a state of functioning efficiently, and run on a driving device 5 including a motor having a speed reducer, a belt 12 and the rail 3. Vibration and vibration noise generated from the door roller 4 can be efficiently prevented from spreading from the eyes to the living room on the floor through the ceiling.
【００１６】又、アングル材１５の固体物が、振動及び
振動音の伝播を防止するので、防振ゴム等の緩衝材のみ
からなる防振装置に比べ、より一層、振動及び振動音の
伝播を低下する。更に、レール３が支持部材１６を介し
て補助ベース６ｂに支持される構造であると、支持部材
１６に設けられた緩衝材９〜１１によって、レール受け
である補助ベース６ｂに直にレール３を取り付ける場合
に比べ、より一層、振動及び振動音の伝播を低下する。Further, since the solid material of the angle member 15 prevents the propagation of vibration and vibration sound, the vibration and vibration sound can be further propagated as compared with a vibration isolator made of only a cushioning material such as a vibration-proof rubber. descend. Further, when the rail 3 is configured to be supported on the auxiliary base 6b via the support member 16, the rails 3 are directly transferred to the auxiliary base 6b as a rail receiver by the cushioning materials 9 to 11 provided on the support member 16. The propagation of vibration and vibration noise is further reduced as compared with the case of attachment.
【００１７】[0017]
【発明の効果】本発明の自動扉の防振装置は、防振ゴム
等の緩衝材を圧縮荷重を受ける部分のみに局所的に設け
て、それぞれの緩衝材が圧縮荷重を受けた状態にあるよ
うにして、防振ゴム等の緩衝材を効率良く機能させ、モ
ータ、減速機等からなる駆動装置やレールを走行する戸
車から発生する振動や振動音が無目から天井を通して階
上の居室に波及することを効率良く防止する。その結
果、マンション等の居住用建物の開口部等の消音の必要
な場所に設置される自動扉として最適な自動扉の提供を
可能にする。According to the vibration damping device for an automatic door of the present invention, a cushioning material such as a rubber cushion is locally provided only in a portion receiving a compressive load, and each cushioning material is in a state of receiving a compressive load. In this way, the shock-absorbing material such as the vibration-proof rubber can be made to function efficiently, and the vibration and the vibration noise generated from the drive unit including the motor and the speed reducer and the door truck traveling on the rails can be seen from the ceiling to the living room on the floor through the ceiling. Effectively prevent ripples. As a result, it is possible to provide an automatic door that is optimal as an automatic door that is installed at a place where noise is required, such as an opening of a residential building such as an apartment.
【図１】本発明の防振装置が実施された自動扉の無目内
の側面断面図である。FIG. 1 is a side cross-sectional view of an automatic door in which a vibration isolator of the present invention is implemented.
【図２】図１の正面断面図である。FIG. 2 is a front sectional view of FIG.
【図３】自動扉を示す図である。FIG. 3 is a view showing an automatic door.
【図４】図１における緩衝材の取付状態を示す分解斜視
図である。FIG. 4 is an exploded perspective view showing a mounting state of a cushioning material in FIG. 1;
【図５】図１における別の緩衝材の取付状態を示す斜視
図である。FIG. 5 is a perspective view showing an attached state of another cushioning material in FIG. 1;
【図６】従来の自動扉の防振装置を示す図である。FIG. 6 is a view showing a conventional automatic door vibration isolator.
１ 扉 ２ 無目 ３ レール ４ 戸車 ５ モータ（駆動装置） ６ ベース ６ａ、６ｂ 補助ベース ７、８、９、１０、１１ 緩衝材 １２ ベルト（駆動装置） １３ プーリ（駆動装置） １５ アングル部材 １６ 支持部材 １８ 吊り金具 Reference Signs List 1 door 2 blind 3 rail 4 door roller 5 motor (drive device) 6 base 6a, 6b auxiliary base 7, 8, 9, 10, 11 buffer material 12 belt (drive device) 13 pulley (drive device) 15 angle member 16 support Member 18 Hanging bracket
Claims (3)
と、該扉が戸車を介して懸架されるレール部材と、前記
扉を移動させる駆動装置と、前記レール部材及び前記駆
動装置を前記開口部上方の無目内にそれぞれ別部材を介
して支持するベースとを備えた自動扉であって、前記駆
動装置の重量による縦方向の荷重を受けて圧縮される防
振用ゴム等の緩衝材と、前記駆動装置の重量による横方
向の荷重を受けて圧縮される別の防振用ゴム等の緩衝材
とによって弾性支持され、無目内で水平に延びるアング
ル材を介して前記駆動装置を前記ベースに支持すること
を特徴とする自動扉の防振装置。1. A door for horizontally opening and closing an opening of a building, a rail member on which the door is suspended via a door roller, a driving device for moving the door, and the rail member and the driving device. A separate member is interposed between the openings above the opening.
An automatic door having a base for supporting the device and supporting the device, wherein a cushioning material such as rubber for vibration damping is compressed by receiving a vertical load due to the weight of the driving device; Another cushioning material such as rubber for vibration isolation that is compressed under load
Elastic supported, automatic doors of vibration damping device of the driving device via the Ang <br/> sealing material extending horizontally, characterized in that supported on the base in the transom by an.
て、前記アングル材の水平方向への移動を規制するスト
ッパ部材を前記ベースに設けたことを特徴とする自動扉
の防振装置。2. A vibration isolator for an automatic door according to claim 1 , wherein a stopper member for restricting horizontal movement of said angle member is provided on said base.
て、前記扉の重量による縦方向の荷重を受けて圧縮され
る防振用ゴム等の緩衝材と、前記扉の重量による横方向
の荷重を受けて圧縮される別の防振用ゴム等の緩衝材と
によって前記ベースに弾性支持される支持部材を介して
前記レール部材を前記ベースに支持することを特徴とす
る自動扉の防振装置。3. The vibration damping device for an automatic door according to claim 1 , wherein a shock absorbing material such as rubber for vibration damping is compressed by receiving a vertical load due to the weight of the door, and a horizontal direction due to the weight of the door. characterized by the buffer material and <br/> such another rubber anti-vibration which is compressed by receiving the load supporting said rail member through a support member which is elastically supported by the base to the base Automatic door anti-vibration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35386893A JP3237088B2 (en) | 1993-12-29 | 1993-12-29 | Automatic door anti-vibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35386893A JP3237088B2 (en) | 1993-12-29 | 1993-12-29 | Automatic door anti-vibration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07197731A JPH07197731A (en) | 1995-08-01 |
| JP3237088B2 true JP3237088B2 (en) | 2001-12-10 |
Family
ID=18433765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35386893A Expired - Fee Related JP3237088B2 (en) | 1993-12-29 | 1993-12-29 | Automatic door anti-vibration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3237088B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1138860B1 (en) * | 2000-03-29 | 2003-08-06 | Hawa Ag | Sound-proofing device for systems comprising a movable part |
| JP2011252289A (en) * | 2010-06-01 | 2011-12-15 | Howa Corp | Automatic door opening/closing device |
| JP7144637B2 (en) * | 2019-01-09 | 2022-09-29 | 三協立山株式会社 | Fittings |
| JP7193674B2 (en) * | 2022-05-19 | 2022-12-20 | 三協立山株式会社 | Fittings |
| JP7214035B1 (en) * | 2022-08-01 | 2023-01-27 | 三協立山株式会社 | Fittings |
-
1993
- 1993-12-29 JP JP35386893A patent/JP3237088B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07197731A (en) | 1995-08-01 |
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