EP1437320B1 - Dispositif elevateur et dispositif de limitation de mouvement de l'automobile de celui-ci - Google Patents

Dispositif elevateur et dispositif de limitation de mouvement de l'automobile de celui-ci Download PDF

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Publication number
EP1437320B1
EP1437320B1 EP01934433A EP01934433A EP1437320B1 EP 1437320 B1 EP1437320 B1 EP 1437320B1 EP 01934433 A EP01934433 A EP 01934433A EP 01934433 A EP01934433 A EP 01934433A EP 1437320 B1 EP1437320 B1 EP 1437320B1
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EP
European Patent Office
Prior art keywords
car
switch
movable member
elevator apparatus
accommodating
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 - Lifetime
Application number
EP01934433A
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German (de)
English (en)
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EP1437320A1 (fr
EP1437320A4 (fr
Inventor
Takao Mitsubishi Denki K. K. NISHIDA
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP1437320A1 publication Critical patent/EP1437320A1/fr
Publication of EP1437320A4 publication Critical patent/EP1437320A4/fr
Application granted granted Critical
Publication of EP1437320B1 publication Critical patent/EP1437320B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B66B17/34—Safe lift clips; Keps

Definitions

  • This invention relates to an elevator apparatus as defined in claim 7 in which the operation mode is switched to an on-car maintenance operation mode at the time of maintenance operation on the car and to a car movement regulating device as defined in claim 1 used in the elevator apparatus and adapted to mechanically regulate the car movement during maintenance operation on the car.
  • Fig. 7 is a plan view showing the car movement regulating device of a conventional elevator apparatus disclosed, for example, in JP 2000-203774 A
  • Fig. 8 is a front view showing the car movement regulating device of Fig. 7.
  • a hoistway 1 in a hoistway 1, there are installed a pair of guide rails 3 for guiding the ascent and descent of a car 2.
  • Fixed to each guide rail 3 is a stationary plate 4 having an engagement hole 4a.
  • a bracket 6 is mounted to an upper beam 5 of the car 2.
  • a lock bar 7 is supported by the bracket 6.
  • the lock bar 7 is linearly reciprocated through manual operation between an engagement position (indicated by the broken line in the drawing) where its forward end portion is inserted into the engagement hole 4a and an accommodating position (indicated by the solid line in the drawing) where it is retracted to a position on the car 2.
  • An operating lever 8 for manually operating the lock bar 7 is mounted to the lock bar 7.
  • a retaining plate 9 for retaining the lock bar 7 at the engagement position and the accommodating position.
  • first and second grooves 9a and 9b are provided in the retaining plate 9 into which the operating lever 8 is inserted, respectively when the lock bar 7 is at the engagement position and at the accommodating position.
  • a limit switch 10 mounted to the bracket 6 is a limit switch 10 to be closed when the lock bar 7 is at the accommodating position.
  • An operating portion 10a of the limit switch 10 is operated by the rear end portion of the lock bar 7.
  • a hoist 11 for raising and lowering the car 2 is controlled by a control unit 12.
  • a control unit 12 there is provided a power circuit 13 for supplying power to the hoist 11.
  • the limit switch 10 is connected to the power circuit 13. When the limit switch 10 is closed, the power circuit 13 is in the ON state, and when the limit switch 10 is open, the power circuit 13 is in the OFF state.
  • the limit switch 10 only detects whether the lock bar 7 is at the accommodating position or not; it is impossible for it to detect whether the lock bar 7 has been appropriately moved to the engagement position, that is, whether the forward end portion of the lock bar 7 has been surely inserted into the engagement hole 4a. Further, it is impossible to detect that the forward end portion of the lock bar 7 is somewhere between the accommodating position and the engagement position. Thus, when the lock bar 7 is not at the accommodating position, it is only possible to perform a simple control to prevent the hoist 11 from being driven.
  • the hoist 11 can be driven with the lock bar 7 somewhere between the two positions, so that the lock bar 7 may interfere with an apparatus in the hoistway 1, thereby damaging the apparatus.
  • This invention has been made with a view toward solving the above problems in the prior art. It is an object of this invention to provide an elevator apparatus in which it is possible to perform finer control according to the position of a movable member for regulating the movement of the car to thereby achieve an improvement in operability in the maintenance operation on the car and a car movement regulating device thereof.
  • a car movement regulating device for an elevator apparatus which is used in an elevator apparatus equipped with a car ascending and descending in a hoistway, a driving device for raising and lowering the car, and a control device for controlling the driving device and which serves to mechanically regulate movement of the car during maintenance operation on the car
  • the device including: a stationary member fixed to one of the interior of the hoistway and the car and having a stationary side engagement portion; a movable member which has a movable side engagement portion to be engaged with the stationary side engagement portion, which is provided in the other of the interior of the hoistway and the car, and which can be displaced between an accommodating position and an engagement position where the movable side engagement portion is engaged with the stationary side engagement portion; and a switch device connected to the control device and adapted to distinguish and detect which of the three positions: the accommodating position, the engagement position, and a halfway position between the accommodating position and the engagement position the movable member is placed at.
  • an elevator apparatus includes: a car ascending and descending in a hoistway; a driving device for raising and lowering the car; a stationary member fixed to one of the interior of the hoistway and the car and having a stationary side engagement portion; a movable member which has a movable side engagement portion to be engaged with the stationary side engagement portion, which is provided in the other of the interior of the hoistway and the car, and which can be displaced between an accommodating position and an engagement position where the movable side engagement portion is engaged with the stationary side engagement portion; a switch device for distinguishing and detecting which of the three positions: the accommodating position, the engagement position, and a halfway position between the accommodating position and the engagement position the movable member is placed at; and a control device which controls the driving device by selectively switching between a plurality of operation modes including a normal mode and an on-car maintenance mode and to which a signal from the switch device is input, wherein when the operation mode is the on-car maintenance mode, the control device
  • Fig. 1 is a schematic diagram showing the car movement regulating device for an elevator apparatus according to an embodiment of this invention.
  • an engagement plate 21 serving as a stationary member is fixed to a stationary portion in the hoistway, e.g., a guide rail.
  • an engagement hole 21a serving as a stationary side engagement portion is provided in the engagement plate 21, there is provided an engagement hole 21a serving as a stationary side engagement portion.
  • An arm 23 serving as a movable member is mounted on a car 22 that is raised and lowered in the hoistway.
  • the arm 23 is rotatable about an axle 24 between an accommodating position (Fig. 1) and an engagement position (Figs. 3 and 4).
  • a hook portion 23a serving as a movable side engagement portion to be engaged with the peripheral edge portion of the engagement hole 21a.
  • a cam 25 is fixed to the arm 23.
  • the first switch 26 is mounted on the car 22 a first switch 26 operated by the cam 25.
  • the first switch 26 has a normally-closed contact 26a, and is closed when the arm 23 is at the accommodating position; when the arm 23 is at a halfway position between the accommodating position and the engagement position (Fig. 2) or the engagement position, it is operated to be opened by the cam 25.
  • the first switch 26 is mechanically operated by the arm 23 and is forcibly closed.
  • the second switch 27 is mounted on the arm 23 a second switch 27 operated by the engagement plate 21.
  • the second switch 27 has a normally-open contact 27a, and is open when the arm 23 is at the accommodating position or the halfway position; when the arm 23 is at the engagement position, it is closed.
  • a switch device 28 has first and second switches 26 and 27, and is adapted to detect which of the three positions: the accommodating position, the engagement position, and the halfway position the arm 23 is placed at.
  • the car 22 is raised and lowered by the drive force of a driving device 29.
  • the driving device 29 is controlled by a control device 30.
  • the control device 30 controls the driving device 29 by selectively switching between a plurality of operation modes including a normal mode and an on-car maintenance mode.
  • the first switch 26 is connected in series to a safety circuit (not shown), so that when the normally-closed contact 26a is opened, supply of electricity to the driving device 29 is cut off.
  • a safety circuit not shown
  • bypass switch for opening and closing a bypass circuit for short-circuiting (bypassing) the first switch 26 along with an on-car operating switch for operating the car 22.
  • the movement of the car 22 is mechanically regulated within the range of the engagement hole 21a.
  • the brake device is released with the balance weight (not shown) being heavier than the car 22, the car 22 ascends; however, as shown in Fig. 4, the hook portion 23a engages with the upper edge portion of the engagement hole 21a, whereby the ascent of the car 22 is regulated.
  • the operation mode is first switched to the on-car maintenance operation mode, and the car 22 is moved at low speed to a predetermined maintenance position. Thereafter, the arm 23 is rotated to the engagement position, and the hook portion 23a is engaged with the engagement hole 21a of the stationary plate 21, whereby the movement of the car 22 is regulated, and maintenance operation is performed on the car 22.
  • the arm 23 After the completion of the maintenance operation, the arm 23 is restored to the accommodating position, and the operation mode is restored to the normal operation mode.
  • the hook 23a is in contact with the peripheral edge portion of the engagement hole 21a
  • the bypass switch and the on-car operating switch are simultaneously operated to slightly raise or lower the car 22 to restore the position of the hook portion 23a with respect to the engagement hole 21a to the position of Fig. 3, and then the arm 23 is rotated to the accommodating position.
  • Fig. 5 is a flowchart illustrating the operation of the control device 30 of Fig. 1 in the normal operation mode.
  • the normal operation mode it is first checked whether the arm 23 is at the accommodating position (step S1). Then, when the arm 23 is not at the accommodating position, the operation of the car 22 is prohibited (step S2), whereby interference of the arm 23 with the ascent/descent apparatus is more reliably prevented.
  • step S3 When it is confirmed that the arm 23 is at the accommodating position, a judgment is made as to whether the arm 23 is at the engagement position (step S3). Normally, when the arm 23 is at the accommodating position, the second switch 27 is open, so that it is confirmed that the arm 23 is not at the engagement position, making it possible to operate the car 22 (step S4).
  • step S5 when it is detected that the arm 23 is at the engagement position although it has been detected that the arm 23 is at the accommodating position, it is determined that failure has occurred in the switch device 28, and an error detection signal is output (step S5).
  • both the first and second switches 26 and 27 are closed even if the arm 23 is at the accommodating position. In such a case, an error detection signal is output, and the switch device 28 is repaired or replaced by the operator.
  • Fig. 6 is a flowchart illustrating the operation of the control device 30 of Fig. 1 in the on-car maintenance operation mode.
  • the on-car maintenance operation mode it is first checked whether the arm 23 is at the accommodating position (step S1). When it is confirmed that the arm 23 is at the accommodating position, a judgment is made as to whether the arm 23 is at the engagement position (step S3).
  • step S4 When it is confirmed that the arm 23 is not at the engagement position, it is determined that the arm 23 is at the accommodating position and that there is no abnormality in the switch 28, making it possible to operate the car 22 (step S4). Thus, even in the on-car maintenance operation mode, when the arm 23 is at the accommodating position, it is possible to operate the car 22, and the can 22 can be moved to a predetermined maintenance position.
  • step S5 When it is detected that the arm 23 is at both the accommodating position and the engagement position, it is determined that the switch device 28 is out of order, and an error detection signal is output (step S5).
  • step S6 a judgment is made as to whether the arm 23 is at the engagement position.
  • step S7 it is determined that the arm 23 is at the halfway position, and the operation of the car 22 is prohibited.
  • the operation of the car 22 is prohibited while the arm 23 is being operated and in the state in which the arm 23 is not appropriately engaged with the engagement plate 21.
  • the car 22 is not raised or lowered.
  • step S8 When it is detected that the arm 23 is not at the accommodating position but at the engagement position, the operation of the car 22 is prohibited, and a release command signal for the brake device of the driving device 29 is made ready to be output (step S8), whereby the brake device can be released, and maintenance operation can be conducted with the brake device released. Further, as described above, when the bypass switch and the on-car operation switch are simultaneously operated, the car 22 can be operated at low speed.
  • this car movement regulating device for an elevator apparatus it is possible to detect by means of the switch device 28 which of the three positions: the accommodating position, the engagement position, and the halfway position, the arm 23 is placed at, so that it is possible to conduct finer control according to the position of the arm 23, whereby it is possible to achieve an improvement in the operability of maintenance operations on the car.
  • the switch device 28 which has the first switch 26, which is closed when the arm 23 is at the accommodating position and opened when the arm 23 is at the halfway position or the engagement position, and the second switch 27, which is opened when the arm 23 is at the accommodating position or the halfway position and closed when the arm 23 is at the engagement position, is used, so that it is possible to distinguish and detect the accommodating position, the engagement position, and the halfway position with a simple construction.
  • the first switch 26 is arranged such that when the arm 23 is restored to the accommodating position, it is operated by the arm 23 to be forcibly closed, so that even when the first switch 26 does not spontaneously return to its original position, it is possible to operate the first switch 26 in the normal fashion.
  • the arm 23 is equipped with the cam 25 that operates the first switch 26 when it is at the halfway position or the engagement position, so that the first switch 26 can be operated more reliably.
  • the control device 30 enables the car 22 to be operated when it is detected that the arm 23 is at the accommodating position; when it is detected that the arm 23 is at the halfway position or the engagement position, it prohibits the operation of the car 22, so that it is possible to perform the maintenance operation on the car 22 more safely.
  • the control device 30 prohibits the operation of the car 22 when it is detected that the arm 23 is not at the accommodating position, so that it is possible to more reliably prevent interference of the arm 23 with the ascent/descent apparatus.
  • a release command signal for the brake device is output only when it is detected that the arm 23 is at the engagement position, so that it is possible to release the brake device more safely.
  • closing the bypass circuit through operation of the bypass switch makes it possible to operate the car 22 through operation of the on-car operating switch, so that it is possible to raise or lower the car 22 even when the arm 23 is at the engagement position, making it possible to easily cancel the engaged state of the arm 23.
  • the engagement plate 21 is fixed in the hoistway and the arm 23 is mounted on the car 22, it is also possible to fix a stationary member to the car and to provide a movable member in the hoistway.
  • the movable member consists of a rotatable arm 23, it is also possible to use a slidable movable member as shown in Figs. 7 and 8.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)

Claims (12)

  1. Dispositif de régulation de mouvement d'une cabine pour appareil ascenseur qui est utilisé dans un appareil ascenseur équipé d'une cabine (22) montant et descendant dans une gaine, d'un dispositif d'entraînement (29) pour élever et abaisser la cabine (22), et d'un dispositif de commande (30) pour commander le dispositif d'entraînement (29), et lequel dispositif de régulation de mouvement de la cabine sert à réguler mécaniquement le mouvement de la cabine (22) pendant les opérations de maintenance sur la cabine (22),
    comprenant :
    un élément stationnaire (21) pouvant être fixé à l'un de l'intérieur de la gaine et de la cabine (22), et ayant une partie d'engagement latérale stationnaire (21a) ;
    un élément mobile (23) qui a une partie d'engagement latérale mobile (23a) devant entrer en prise avec la partie d'engagement latérale stationnaire (21a), qui est prévu dans l'autre de l'intérieur de la gaine et de la cabine (22), et qui peut être déplacé entre une position de logement et une position d'engagement où la partie d'engagement latérale mobile (23a) entre en prise avec la partie d'engagement latérale stationnaire (21a) ; et
    un dispositif d'interrupteur (28) pouvant être connecté au dispositif de commande (30) et adapté pour distinguer et détecter dans laquelle des trois positions, la position de logement, la position d'engagement et une position intermédiaire entre la position de logement et la position d'engagement, l'élément mobile (23) est placé.
  2. Dispositif de régulation de mouvement d'une cabine pour un appareil ascenseur selon la revendication 1, dans lequel le dispositif d'interrupteur (28) présente un premier interrupteur (26) qui est fermé lorsque l'élément mobile (23) se trouve dans la position de logement et ouvert lorsque l'élément mobile (23) se trouve dans la position intermédiaire ou la position d'engagement et un second interrupteur (27) qui est ouvert lorsque l'élément mobile (23) se trouve dans la position de logement ou la position intermédiaire et fermé lorsque l'élément mobile (23) se trouve dans la position d'engagement.
  3. Dispositif de régulation de mouvement d'une cabine pour appareil ascenseur selon la revendication 2, dans lequel le premier interrupteur (26) est agencé de telle manière qu'en remettant l'élément mobile (23) dans la position de logement, il soit actionné par l'élément mobile (23) pour être fermé de manière forcée.
  4. Dispositif de régulation de mouvement d'une cabine pour appareil ascenseur selon la revendication 2, dans lequel l'élément mobile (23) est tourné pour être déplacé entre la position de logement et la position d'engagement autour d'un axe.
  5. Dispositif de régulation de mouvement d'une cabine pour appareil ascenseur selon la revendication 4, dans lequel l'élément mobile (23) est équipé d'une came pour actionner le premier interrupteur (26) lorsqu'il est dans la position intermédiaire ou la position d'engagement.
  6. Dispositif de régulation de mouvement d'une cabine pour appareil ascenseur selon la revendication 2, dans lequel l'élément stationnaire (21) est fixé à l'intérieur de la gainé, et dans lequel l'élément mobile (23) est monté sur la cabine (22), le premier interrupteur (26) étant monté sur la cabine (22) et le second interrupteur (27) étant monté sur l'élément mobile (23).
  7. Appareil ascenseur comprenant :
    une cabine (22) qui est élevée et abaissée dans une gaine ;
    un dispositif d'entraînement (29) pour élever et abaisser la cabine (22) ;
    un élément stationnaire (21) fixé à l'un de l'intérieur de la gaine et de la cabine (22) et ayant une partie d'engagement latérale stationnaire (21a) ;
    un élément mobile (23) qui a une partie d'engagement latérale mobile (23a) devant entrer en prise avec la partie d'engagement latérale stationnaire (21a), qui est prévu dans l'autre de l'intérieur de la gaine et de la cabine (22), et qui peut être déplacé entre une position de logement et une position d'engagement où la partie d'engagement latérale mobile (23a) entre en prise avec la partie d'engagement latérale stationnaire (21a) ;
    un dispositif d'interrupteur (28) pour distinguer et détecter dans laquelle des trois positions : la position de logement, la position d'engagement et une position intermédiaire entre la position de logement et la position d'engagement, l'élément mobile (23) est placé ; et
    un dispositif de commande (30) qui commande le dispositif d'entraînement (29) en commutant sélectivement entre une pluralité de modes de fonctionnement comprenant un mode normal et un mode de maintenance sur cabine et auquel un signal en provenance du dispositif d'interrupteur (28) est fourni,
    dans lequel le mode de fonctionnement est le mode de maintenance sur cabine, le dispositif de commande (30) permet le fonctionnement de la cabine (22) lorsqu'il est détecté que l'élément mobile (23) se trouve dans la position de logement, et interdit le fonctionnement de la cabine (22) lorsqu'il est détecté que l'élément mobile (23) se trouve dans la position intermédiaire.
  8. Appareil ascenseur selon la revendication 7, dans lequel lorsque le mode de fonctionnement est le mode normal, le dispositif de commande (30) interdit le fonctionnement de la cabine (22) lorsqu'il est détecté que l'élément mobile (23) n'est pas dans la position de logement.
  9. Appareil ascenseur selon la revendication 7, dans lequel le dispositif d'entraînement (29) est équipé d'un dispositif de frein, et dans lequel le dispositif de commande (30) permet de fournir un signal de commande de libération pour le dispositif de frein seulement lorsque le mode de fonctionnement est le mode de maintenance sur cabine et qu'il est détecté que l'élément mobile (23) se trouve dans la position d'engagement.
  10. Appareil ascenseur selon la revendication 7, dans lequel le dispositif d'interrupteur (28) a un premier interrupteur (26) qui est fermé lorsque l'élément mobile (23) se trouve dans la position de logement et ouvert lorsque l'élément mobile (23) se trouve dans la position intermédiaire ou la position d'engagement et un second interrupteur (27) qui est ouvert lorsque l'élément mobile (23) se trouve dans la position de logement ou la position intermédiaire et fermé lorsque l'élément mobile (23) se trouve dans la position d'engagement.
  11. Appareil ascenseur selon la revendication 10, dans lequel, lorsqu'à la fois le premier et le second interrupteurs (27) sont fermés, le dispositif de commande (30) génère un signal de détection d'erreur pour le dispositif d'interrupteur (28).
  12. Appareil ascenseur selon la revendication 10, dans lequel sont prévus sur la cabine (22) un interrupteur de fonctionnement sur cabine pour faire fonctionner la cabine (22) et un sectionneur de dérivation pour ouvrir et fermer un circuit de dérivation pour court-circuiter le premier interrupteur (26), et dans lequel, lorsque l'élément mobile (23) se trouve dans la position d'engagement, le dispositif de commande (30) permet de faire fonctionner la cabine (22) par l'intermédiaire du fonctionnement de l'interrupteur de fonctionnement sur cabine lorsque le circuit de dérivation est fermé par l'intermédiaire du fonctionnement du sectionneur de dérivation.
EP01934433A 2001-05-30 2001-05-30 Dispositif elevateur et dispositif de limitation de mouvement de l'automobile de celui-ci Expired - Lifetime EP1437320B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/004566 WO2002098780A1 (fr) 2001-05-30 2001-05-30 Dispositif elevateur et dispositif de limitation de mouvement de l'automobile de celui-ci

Publications (3)

Publication Number Publication Date
EP1437320A1 EP1437320A1 (fr) 2004-07-14
EP1437320A4 EP1437320A4 (fr) 2005-06-22
EP1437320B1 true EP1437320B1 (fr) 2007-01-10

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EP01934433A Expired - Lifetime EP1437320B1 (fr) 2001-05-30 2001-05-30 Dispositif elevateur et dispositif de limitation de mouvement de l'automobile de celui-ci

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EP (1) EP1437320B1 (fr)
JP (1) JP4896370B2 (fr)
KR (1) KR100506476B1 (fr)
CN (1) CN1184127C (fr)
DE (1) DE60125990T2 (fr)
WO (1) WO2002098780A1 (fr)

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JP2016098106A (ja) * 2014-11-26 2016-05-30 三菱電機株式会社 エレベータのかご固定装置
CN105236231B (zh) * 2015-11-03 2018-10-26 陈帅 电梯防护机构
CN108473276B (zh) * 2016-01-08 2019-10-11 三菱电机株式会社 轿厢移动限制装置及电梯
CN105858389B (zh) * 2016-05-24 2018-03-20 广州广日电梯工业有限公司 电梯称重行程放大装置、及具有该装置的电梯
WO2018025312A1 (fr) * 2016-08-01 2018-02-08 三菱電機株式会社 Dispositif de fixation de cabine pour ascenseur
JP6251368B1 (ja) * 2016-12-07 2017-12-20 東芝エレベータ株式会社 エレベータ保守作業支援システム
WO2019064451A1 (fr) * 2017-09-28 2019-04-04 三菱電機株式会社 Appareil de contrainte de cabine d'ascenseur
CN111655602B (zh) * 2018-01-26 2022-03-15 三菱电机大楼技术服务株式会社 具有确保电梯的作业者安全的功能的控制装置和电梯系统
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JPS62161153U (fr) * 1986-04-01 1987-10-13
JPH0356378A (ja) * 1989-07-25 1991-03-11 Toshiba Corp エレベータの点検装置
JP2596906Y2 (ja) * 1993-01-19 1999-06-28 株式会社タダノ 作業車両の安全装置
JP2000203774A (ja) * 1998-11-12 2000-07-25 Toshiba Corp エレベ―タ籠の停止ロック装置
JP2001019295A (ja) * 1999-07-08 2001-01-23 Hitachi Building Systems Co Ltd リミットスイッチ操作装置の作動状態保持治具

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EP1437320A1 (fr) 2004-07-14
WO2002098780A1 (fr) 2002-12-12
JPWO2002098780A1 (ja) 2004-09-16
KR20030018058A (ko) 2003-03-04
CN1184127C (zh) 2005-01-12
JP4896370B2 (ja) 2012-03-14
DE60125990T2 (de) 2007-10-25
CN1444539A (zh) 2003-09-24
DE60125990D1 (de) 2007-02-22
KR100506476B1 (ko) 2005-08-03
EP1437320A4 (fr) 2005-06-22

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