JPS5930635B2 - Elevator landing selection device - Google Patents

Elevator landing selection device

Info

Publication number
JPS5930635B2
JPS5930635B2 JP51140933A JP14093376A JPS5930635B2 JP S5930635 B2 JPS5930635 B2 JP S5930635B2 JP 51140933 A JP51140933 A JP 51140933A JP 14093376 A JP14093376 A JP 14093376A JP S5930635 B2 JPS5930635 B2 JP S5930635B2
Authority
JP
Japan
Prior art keywords
floor
relay
car
command
stop
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
Application number
JP51140933A
Other languages
Japanese (ja)
Other versions
JPS5366649A (en
Inventor
進 山田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP51140933A priority Critical patent/JPS5930635B2/en
Publication of JPS5366649A publication Critical patent/JPS5366649A/en
Publication of JPS5930635B2 publication Critical patent/JPS5930635B2/en
Expired legal-status Critical Current

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Description

【発明の詳細な説明】 この発明はエレベータの停止階を選択する装置の改良に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for selecting a stopping floor of an elevator.

エレベータの運転上、かご位置の把握は不可欠であり、
これは乗場選択器によって行われる。
Understanding the car position is essential for elevator operation.
This is done by a landing selector.

乗場選択器によって得られたかご位置信号は乗場及びか
ご内へのかご位置表示、かごの停止決定等に用いられる
The car position signal obtained by the hall selector is used for displaying the car position at the hall and inside the car, determining car stop, etc.

この乗場選択器には種々の形式のものがあるが、その一
つを第1図及び第2図によって説明する。
There are various types of this landing selector, one of which will be explained with reference to FIGS. 1 and 2.

第1図中、1〜6は1階から6階の階床、γはかご、8
はかと7を支持する主索、9はつり合おもり、10は巻
上電動機(図示しない)により駆動される綱車、11は
かと7に設置された位置検出器、21 、22・・・は
昇降路に設けられ位置検出器11と対応する誘導板板、
誘導板21は1階1と2階2の間に、誘導板22は2階
2と3階3の間に、・・・それぞれ配置されている。
In Figure 1, 1 to 6 are the floors from the 1st to the 6th floor, γ is the cage, and 8
The main rope supporting the heel 7, 9 a counterweight, 10 a sheave driven by a hoisting motor (not shown), 11 a position detector installed on the heel 7, 21, 22, etc. are elevators a guide plate provided in the road and corresponding to the position detector 11;
The guide plate 21 is disposed between the first floor 1 and the second floor 2, and the guide plate 22 is disposed between the second floor 2 and the third floor 3.

第2図中、26は機械室に設置された乗場選択器、27
は電動機、28は電動機27によって回転するねじ棒、
29はねじ棒28にねじ込まれ回転不能に支持された移
動ナツト、1A〜6Aは移動ナツト29の側方に一定間
隔で配置され1階1〜6階6に対応して設けられており
、移動ナツト29の移動により順次動作するかご位置ス
イッチ、すなわち、かご7が上昇して、位置検出器11
が誘導板21〜25に対向する度に信号が発せられ、こ
の信号によって電動機27が回転して移動ナツト29を
1階床分ずつ進める。
In Figure 2, 26 is a landing selector installed in the machine room, 27
is an electric motor, 28 is a threaded rod rotated by the electric motor 27,
29 is a movable nut screwed into a threaded rod 28 and supported non-rotatably; 1A to 6A are arranged at regular intervals on the sides of the movable nut 29 and are provided corresponding to floors 1 to 6 of the first floor; As the nut 29 moves, the car position switch operates sequentially, that is, the car 7 rises, and the position detector 11
A signal is generated each time the nut faces the guide plates 21 to 25, and this signal causes the electric motor 27 to rotate and advance the moving nut 29 one floor at a time.

例えば、第2図では移動ナツト29は2階にあるが、か
ご7が上昇して位置検出器11が誘導板22に対向する
と、電動機27は回転して移動ナツト29は上方へ移動
する。
For example, in FIG. 2, the moving nut 29 is on the second floor, but when the car 7 rises and the position detector 11 faces the guide plate 22, the electric motor 27 rotates and the moving nut 29 moves upward.

そして3階のかご位置スイッチ34を押すと電動機27
は停止し、かご位置スイッチ3Aから3階のかご位置信
号が得られ、3階3に呼びが登録されていれば、かご7
は3階に停止することになる。
Then, when you press the car position switch 34 on the third floor, the electric motor 27
stops, the car position signal on the 3rd floor is obtained from the car position switch 3A, and if a call is registered on the 3rd floor 3, car 7
will stop on the third floor.

すなわち、この場合に設定可能な減速距離は誘動板21
〜25の位置によって定まることになる。
That is, the deceleration distance that can be set in this case is
It is determined by the position of ~25.

したがって、かご7の必要とする減速距離が上記を越え
る場合には、誘導板21〜25の配置は不能となる。
Therefore, if the required deceleration distance of the car 7 exceeds the above range, the guide plates 21 to 25 cannot be arranged.

上記設定可能な減速距離は第1図から明らかなように、
はぼ1階床間隔が最犬となる。
As is clear from Figure 1, the deceleration distance that can be set above is as follows:
The best distance is one floor between floors.

しかシ、高速エレベータでは、その所要減速距離は数階
法間隔に及ぶため、かご位置信号は実際のかご位置より
も相当先行していなげればならない。
However, in high-speed elevators, the required deceleration distance spans several orders of magnitude, so the car position signal must be delivered considerably in advance of the actual car position.

これは電動機27を回転させ、かご位置に対して先行し
たかご位置スイッチ1A〜6Aを動作させることにより
行える。
This can be done by rotating the electric motor 27 and operating the car position switches 1A to 6A that precede the car position.

しかし、この場合かと7の停止位置と移動ナツト29の
停止位置が、故障、停電等による停止の場合にずれやす
く、通常運転復帰後の運転に支障を生ずる。
However, in this case, the stop position of the gear 7 and the stop position of the movable nut 29 are likely to deviate from each other in the event of a stop due to a failure, power outage, etc., which may cause problems in operation after normal operation is resumed.

そこで、これらを修正する必要があるが、この装置では
それが構成上困難であった。
Therefore, it is necessary to correct these, but it is difficult to do so with this device due to its configuration.

この発明は上記欠点を改良するもので、安価な構成で高
速エレベータにも適用できるようにした乗場選択装置を
提供することを目的とする。
The present invention is intended to improve the above-mentioned drawbacks, and aims to provide a landing selection device that is inexpensive and can be applied to high-speed elevators.

以下、第1図〜第4図によりこの発明の一実施例を説明
する。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

第3図及び第4図中、(+) 、 (−)は直流電源、
IAa 、IAb 、2Aa 〜2Ad、3Aa 〜3
A e % 4 A a 〜4 A e、5 A
a 〜5 A d % 6 Aa +6Abばそれぞれ
位置スイッチ1A〜6Aの常開接点、IAc 、2Ae
、3Af 、4Af 、5Aeは同じくかご位置スイ
ッチ1A〜5Aの常閉接点、1B〜5Bはそれぞれ1階
〜5階の乗場上り呼びボタン、10〜5cはそれぞれ1
階〜5階の乗場上と呼び登録リレーで、ICa〜5Ca
はその常開接点、1D〜6Dはそれぞれ1階〜6階の停
止階選択リレーで、1Da〜6Da、1Db〜5Dbは
その常開接点、31は付勢されるとかと7を停させる指
令を発する停止指令リレーで、31a。
In Figures 3 and 4, (+) and (-) are DC power supplies,
IAa, IAb, 2Aa ~ 2Ad, 3Aa ~ 3
A e % 4 A a ~4 A e, 5 A
a ~ 5 A d % 6 Aa + 6Ab are the normally open contacts of position switches 1A ~ 6A, IAc, 2Ae, respectively
, 3Af, 4Af, and 5Ae are the normally closed contacts of the car position switches 1A to 5A, 1B to 5B are the call buttons for landings on the 1st to 5th floors, respectively, and 10 to 5c are the normally closed contacts of the car position switches 1A to 5A, respectively.
ICa to 5Ca at the call registration relay above the landing on the 5th floor.
1D to 6D are the stop floor selection relays for the 1st to 6th floors, respectively, 1Da to 6Da and 1Db to 5Db are the normally open contacts, and 31 is the energized and command to stop 7. A stop command relay that issues 31a.

31bはその常開接点及び常閉接点、32aはかご7が
走行中閉成する走行リレー接点からなる1階床前進指令
リレー接点、32bは同じく開放する1階床前進指4+
)レー接点、33はかご7が上り方向へ走行するとき閉
成する上り方向リレー接点、34は同じく下り方向リレ
ー接点、35a 、35bは位置検出器11が誘導板2
1〜25のいずれかと最初に対向するまで閉成し、その
後開放する2階床前進指令リレー接点、35c 、35
dは同じく誘導板21〜25のいずれかと最初に対向す
るまで開放し、その後閉成する2階床前進指令リレー接
点である。
31b is a normally open contact and a normally closed contact, 32a is a first floor advance command relay contact consisting of a traveling relay contact that is closed while the car 7 is running, and 32b is a first floor advance finger 4+ that is also opened.
) relay contact, 33 is an upward relay contact that closes when the car 7 travels in the upward direction, 34 is a downward relay contact, and 35a and 35b are the position detectors 11 connected to the guide plate 2.
2nd floor advance command relay contact that closes until it first faces one of 1 to 25 and then opens, 35c, 35
Similarly, d is a second floor advance command relay contact which opens until it first faces any one of the guide plates 21 to 25 and then closes.

次にこの実施例の動作を説明する。Next, the operation of this embodiment will be explained.

今、かご7は2階2に停止しており、5階)5で上り呼
びボタン5Bが押されたとする。
It is now assumed that the car 7 is stopped at the 2nd floor 2 and the up call button 5B is pressed on the 5th floor 5.

(+) 5 B −5Ae−5C() の回路によ
り、5階の乗場上り呼び登録リレー5Cは付勢され、接
点5Ca の閉成により自己保持し、5階の乗場上り呼
びが登録される。
The circuit (+) 5 B -5Ae-5C() energizes the 5th floor up-hall call registration relay 5C, which is self-held by closing the contact 5Ca, and registers the 5th floor up-hall call.

かご7は2階2に停止しているので、かご位置スイッチ
接点2Aa−2Adは閉成している。
Since the car 7 is stopped on the second floor 2, the car position switch contacts 2Aa-2Ad are closed.

したがって、(+)−32b−2Ab−2D−(−’)
の回路により、2階の停止階選択リレー2Dは付勢され
ている。
Therefore, (+)-32b-2Ab-2D-(-')
The stop floor selection relay 2D on the second floor is energized by the circuit.

かご7が5階の上り呼びに応答するため上昇を開始する
と、上り方向リレー接点33及び走行リレー32aは閉
成し、走行リレー32bは開放する。
When the car 7 starts to ascend in order to respond to the up call on the 5th floor, the up direction relay contact 33 and the running relay 32a are closed, and the running relay 32b is opened.

また、2階床前進指令リレー接点35aは閉成し、接点
35cは開放している。
Further, the second floor advance command relay contact 35a is closed, and the contact 35c is open.

そのため、(+) 32a −3l b−33−35
a−2Ac−3D()の回路により、3階の停止階選択
リレー3Dは付勢される。
Therefore, (+) 32a -3l b-33-35
The third floor stop floor selection relay 3D is energized by the circuit a-2Ac-3D().

ここで、図示しない回路により、3階3に呼びかないこ
とを検出すると、前進信号が発せられ、乗場選択器26
の電動機27は回転し移動ナツト29を3階に進める。
Here, when a circuit (not shown) detects that there is no call to the third floor 3, a forward signal is issued and the landing selector 26
The electric motor 27 rotates and advances the moving nut 29 to the third floor.

これにより、2階のかご位置スイッチ2Aは復帰し、3
階のかご位置スイッチ3Aが動作し、接点3Aa〜3A
eは閉成する。
As a result, the car position switch 2A on the second floor returns, and the car position switch 2A on the second floor returns.
The car position switch 3A on the floor operates, and the contacts 3Aa to 3A
e is closed.

そこで、(+)−32a−31b−33−35a−3A
d−4D−(−)の回路により、4階の停止階選択リレ
ー4Dは付勢され、接点4Dbは閉成する。
Therefore, (+)-32a-31b-33-35a-3A
The fourth floor stop floor selection relay 4D is energized by the circuit d-4D-(-), and the contact 4Db is closed.

しかし、4階の乗場上り呼びは登録されておらず、接点
4Caは開放しているから、停止指令リレー31は付勢
されず、かご7は上昇を続ける。
However, since the fourth floor landing call is not registered and the contact 4Ca is open, the stop command relay 31 is not energized and the car 7 continues to ascend.

そして、位置検出器11と誘導板22が対向すると、2
階床前進指令リレー接点35aは開放し、接点35cは
閉成する。
Then, when the position detector 11 and the guide plate 22 face each other, the 2
Floor advance command relay contact 35a is opened and contact 35c is closed.

ここで、(+)−32a−31b 〜33−35cm3
Ae−5D −(−)の回路により、5階の停止階選択
リレー5Dが付勢され、接点5Daは閉成する。
Here, (+)-32a-31b ~33-35cm3
The Ae-5D - (-) circuit energizes the fifth floor stop floor selection relay 5D, and the contact 5Da is closed.

同時に、接点5Dbも閉成され=(+) −5Ca−5
Db−31()の回路により、停止指令リレー31は1
付勢され、かご7に対し5階5に停止する指令を発し、
かご7は5階5に減速停止する。
At the same time, contact 5Db is also closed = (+) -5Ca-5
Due to the circuit of Db-31 (), the stop command relay 31 is
It is energized and issues a command to car 7 to stop at 5th floor 5,
Car 7 decelerates and stops at 5th floor 5.

停止指令リレー31の付勢により接点31aは閉成し、
(+)−31a−5Da−5D −()の回路により、
停止階選択リレー5Dは自己保持される。
The contact 31a is closed by the energization of the stop command relay 31,
By the circuit of (+)-31a-5Da-5D-(),
The stop floor selection relay 5D is self-held.

かご7が5階5に停止したとき、かご位置スイッチ接点
5Aeは閉成するから、乗場上り呼び登録リレー5Cは
消勢される。
When the car 7 stops at the 5th floor 5, the car position switch contact 5Ae is closed, so the landing up call registration relay 5C is deenergized.

なお、かご7が5階の乗場上り呼びに応答すべく出発し
、位置検出器11が誘導板22に対向する前に4階の乗
場上り呼びが登録されたときは、(+) 32a−3
1b−33−35a−3Ad−4D−(−)の回路で4
階の停止階選択リレー4Dが付勢されたとき、停止指令
が発せられ、リレー4Dは自己保持され、かごは4階4
に停止する。
Note that when the car 7 departs to respond to the up-call on the 5th floor landing and the 4th-floor up call is registered before the position detector 11 faces the guide plate 22, (+) 32a-3
1b-33-35a-3Ad-4D-(-) circuit 4
When the floor selection relay 4D is energized, a stop command is issued, the relay 4D is self-holding, and the car is on the 4th floor.
Stop at.

しかし、位置検出器11が誘導板22を通過してしまう
と、接点35aの開放によって選択リレー4Dは消勢さ
れてしまうので、その後に4階の乗場上り呼びが登録さ
れても、かご7は4階4には停止しない。
However, if the position detector 11 passes through the guide plate 22, the selection relay 4D is deenergized by opening the contact 35a, so even if a fourth-floor landing call is subsequently registered, the car 7 is not activated. It does not stop on the 4th floor.

また、故障、停電等で、かご7が階間で停止した場合に
は、かご位置スイッチ1A〜6Aはかご7の位置に停止
し、停止階選択リレー1D〜6Dも、接点32bの閉成
(接点32aの開放)により、かご位置スイッチ接点I
Aa〜6Aaと同じ階のものが付勢されるため、平常運
転復帰時には何の支障もなく運転が継続できる。
In addition, if the car 7 stops between floors due to a failure, power outage, etc., the car position switches 1A to 6A stop at the position of the car 7, and the stop floor selection relays 1D to 6D also close the contact 32b ( (opening of contact 32a), car position switch contact I
Since those on the same floor as Aa to 6Aa are energized, operation can be continued without any hindrance when normal operation is restored.

このようにして、かご7の位置よりも2階床先行した階
からかご位置信号が得られるので、設定可能の減速距離
が長くなり、高速エレベータへの適用が可能となる。
In this way, a car position signal is obtained from a floor two floors ahead of the position of car 7, so the deceleration distance that can be set becomes longer, and application to high-speed elevators becomes possible.

なお、上記実施例は上り運転の場合について説明したが
、下り運転の場合も同様であることは言うまでもない。
Note that although the above embodiment has been described for the case of uphill driving, it goes without saying that the same applies to the case of downhill driving.

また、上記実施例では位置検出器11が誘導板21〜2
5に最初に対向するとき2階床前進指令リレーが動作す
るように説明したが、上記リレーの動作はかご7の出発
後の一定走行後の場合でも同様に実施できる。
Further, in the above embodiment, the position detector 11 is connected to the guide plates 21 to 2.
Although it has been explained that the second floor advance command relay is operated when the car 5 first faces the car 5, the above-mentioned operation of the relay can be carried out in the same way even after the car 7 has traveled for a certain period of time after departure.

また、3階床以上先行した階から停止階選択リレーを得
るようにすることも、回路の一部を変更することにより
実施できる。
Furthermore, it is also possible to obtain a stop floor selection relay from a floor three or more floors in advance by changing a part of the circuit.

以上説明したとおりこの発明は、昇降路に配置された誘
導板に位置検出器が係合する度に電動機が回転し、これ
に伴って移動する移動子によりかご位置接点を順次動作
させ、1階床前進リレーと2階床前進リレーの動作によ
り、かごの出発に伴って1階床前進した階を選択し、か
ごの出発後そのときのがご位置接点の示す階床から2階
床前進した階を選択し、選択した階と呼びのある階とが
一致したときかごに停止指令を与えるようにしたのでσ
安価な装置で2階床以上必要とする減速距離に対応する
かご位置信号を得ることかでき、高速エレベータに適用
することができる。
As explained above, this invention rotates an electric motor every time a position detector engages with a guide plate arranged in a hoistway, and sequentially operates car position contacts by a moving element that moves accordingly. The operation of the floor advance relay and the second floor advance relay selects the floor that has moved forward one floor when the car departs, and after the car departs, it moves two floors forward from the floor indicated by the car position contact. By selecting a floor and giving a stop command to the car when the selected floor and the named floor match, σ
It is possible to obtain a car position signal corresponding to a deceleration distance that requires two or more floors with an inexpensive device, and it can be applied to high-speed elevators.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来のエレベータの乗場選択装置の位置検出器
と誘導板の配置図、第2図は同じく乗場選択器の正面図
、第3図はこの発明によるエレベータの乗場選択装置の
一実施例を示す階床選択回路図、第4図は同じく停止指
令回路図である。 1A〜6Aは1階〜6階かご位置スイッチ、IAa 〜
IAc 、2Aa〜2Ae 、3Aa〜3Af4Aa〜
4Af 、5Aa〜5Ae 、6Aa〜6Abは1階〜
6階かご位置スイッチ接点、1B〜5Bは1階〜5階乗
場上り呼びボタン、1C〜5Cは1階〜5階乗場上り呼
び登録リレー、1D〜6Dは1階〜6階停止階選択リレ
ー、7はかご、11−は位置検出器、21〜25は誘導
板、26は乗場選択器、27は電動機、28はねじ棒、
29は移動ナツト、31は停止指令リレー、32a、3
2bは1階床前進指令リレー接点、33は上り方向リレ
ー接点、34は下り方向リレー接点、35a〜35dは
2階床前進指令リレー接点。
FIG. 1 is a layout diagram of a position detector and guide plate of a conventional elevator landing selection device, FIG. 2 is a front view of the same, and FIG. 3 is an embodiment of an elevator landing selection device according to the present invention. FIG. 4 is a floor selection circuit diagram showing the same, and FIG. 4 is a stop command circuit diagram. 1A to 6A are car position switches on the 1st to 6th floors, IAa to 6A
IAc, 2Aa~2Ae, 3Aa~3Af4Aa~
4Af, 5Aa~5Ae, 6Aa~6Ab are on the 1st floor~
6th floor car position switch contact, 1B to 5B are 1st to 5th floor landing call buttons, 1C to 5C are 1st to 5th floor landing call registration relays, 1D to 6D are 1st to 6th floor stop floor selection relays, 7 is a car, 11- is a position detector, 21 to 25 are guide plates, 26 is a landing selector, 27 is an electric motor, 28 is a threaded rod,
29 is a moving nut, 31 is a stop command relay, 32a, 3
2b is a first floor advance command relay contact, 33 is an upward direction relay contact, 34 is a downward direction relay contact, and 35a to 35d are second floor advance command relay contacts.

Claims (1)

【特許請求の範囲】[Claims] 1 昇降路内に設けられ各階の中間位置に配置された誘
導板、かごに設けられ上記誘導板と係合すると動作する
位置検出器、各階に対応して一定間隔で配置され上記位
置検出器が動作する度に電動機が回転しこれに伴って移
動する移動子により次の階に対応するものが動作するか
ご位置接点、上記かとに出発指令す一発せられた後動作
し、1階床前進指令を発する1階床前進指令リレー、こ
の1階床前進指令リレーの動作後に動作し、2階床前進
指令を発する2階前進指令リレー、各階に対応して設け
られ上記かどの停止中は上記かご位置接点の示す階に対
応するものが動作し、上記1階床前進指令により、上記
かどの進行方向へ1階床前進した階に対応するものが動
作し、上記2階床前進指令により、そのときの上記かご
位置接点の示す階床から2階床前進した階に対応するも
のが動作する停止階選択リレー、及び上記停止階選択リ
レーの動作した階と呼びのある階とが一致したとぎ上記
かとに停止指令を与える停止指令リレーを備えてなるエ
レベータの乗場選択装置。
1. A guide plate provided in the hoistway and placed at an intermediate position between each floor, a position detector provided on the car and activated when it engages with the guide plate, and a position detector placed at regular intervals corresponding to each floor. Each time the electric motor rotates, the car position contact that moves accordingly moves the car position contact corresponding to the next floor, which operates after a departure command is issued to the above-mentioned cage, and then commands the first floor to move forward. 1st floor forward command relay that issues a 1st floor forward command relay, 2nd floor forward command relay that operates after the operation of this 1st floor forward command relay and issues a 2nd floor forward command, and a 2nd floor forward command relay that is installed corresponding to each floor. The one corresponding to the floor indicated by the position contact operates, and the one corresponding to the floor that has moved forward one floor in the direction of movement in the corner is activated by the first floor advance command, and the one corresponding to the floor that has moved forward one floor in the direction of movement of the corner is activated by the second floor advance command. When the stop floor selection relay corresponding to the floor two floors ahead from the floor indicated by the car position contact is activated, and the floor where the stop floor selection relay is activated matches the floor with the name. An elevator landing selection device comprising a stop command relay that gives a stop command to the elevator.
JP51140933A 1976-11-24 1976-11-24 Elevator landing selection device Expired JPS5930635B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51140933A JPS5930635B2 (en) 1976-11-24 1976-11-24 Elevator landing selection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51140933A JPS5930635B2 (en) 1976-11-24 1976-11-24 Elevator landing selection device

Publications (2)

Publication Number Publication Date
JPS5366649A JPS5366649A (en) 1978-06-14
JPS5930635B2 true JPS5930635B2 (en) 1984-07-27

Family

ID=15280183

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51140933A Expired JPS5930635B2 (en) 1976-11-24 1976-11-24 Elevator landing selection device

Country Status (1)

Country Link
JP (1) JPS5930635B2 (en)

Also Published As

Publication number Publication date
JPS5366649A (en) 1978-06-14

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