EP2653425B1 - Elevator door device - Google Patents

Elevator door device Download PDF

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Publication number
EP2653425B1
EP2653425B1 EP10860697.1A EP10860697A EP2653425B1 EP 2653425 B1 EP2653425 B1 EP 2653425B1 EP 10860697 A EP10860697 A EP 10860697A EP 2653425 B1 EP2653425 B1 EP 2653425B1
Authority
EP
European Patent Office
Prior art keywords
door
elevator
intercepting
photoreceiver
phototransmitter
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.)
Active
Application number
EP10860697.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2653425A1 (en
EP2653425A4 (en
Inventor
Masaya Kitazawa
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
Publication of EP2653425A1 publication Critical patent/EP2653425A1/en
Publication of EP2653425A4 publication Critical patent/EP2653425A4/en
Application granted granted Critical
Publication of EP2653425B1 publication Critical patent/EP2653425B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/22—Operation of door or gate contacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/06—Door or gate operation of sliding doors
    • B66B13/08—Door or gate operation of sliding doors guided for horizontal movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/14—Control systems or devices
    • B66B13/143—Control systems or devices electrical

Definitions

  • the present invention relates to a door operator of an elevator.
  • a position switch which uses the interception and reflection of light is widely used to recognize these conditions. Compared to switches of other types, this position switch has high accuracy and is resistant to dust, water and the like.
  • the light receiving condition of the position switch is the same in whichever of a fully open position and a fully closed position the door panel may be arranged. For this reason, it is impossible to discriminate between a fully open condition and a fully closed condition of the door panel.
  • Patent Literature 1 In the door operator provided in Patent Literature 1, it is necessary to use expensive position switches in a plurality of numbers.
  • the present invention was made to solve the problem described above, and the object of the invention is to provide a door operator of an elevator capable of discriminating between a fully open condition and a fully closed condition of a door of the elevator by one position switch.
  • a door operator of an elevator of the present invention includes a position switch which is provided in the vicinity of a door of the elevator and in which two sets of phototransmitter/photoreceiver devices, each having a phototransmitter and a photoreceiver, are arranged side by side in a vertical direction; a first intercepting body provided on the door in such a manner as to intercept or reflect light from a lower side phototransmitter to a lower side photoreceiver when the door has come to one of a fully closed condition and a fully open condition; and a second intercepting body provided on the door in such a manner as to simultaneously intercept or reflect light from the lower side phototransmitter to the lower side photoreceiver and light from an upper side phototransmitter to an upper side photoreceiver when the door has come to the other of the fully closed condition and the fully open condition; wherein the second intercepting body has: a first intercepting portion which is formed in such a manner as to intercept or reflect light from the lower side phototransmitter to the lower side
  • Figure 1 is a front view to explain the condition in which a door panel of the door operator of an elevator in Embodiment 1 of the present invention is fully open.
  • Figure 2 is a front view to explain the condition in which a door panel of the door operator of an elevator in Embodiment 1 of the present invention is fully closed.
  • Figures 1 and 2 are front views obtained when an upper part of an entrance (not shown) of a car (not shown) is seen from outside the car.
  • reference numeral 1 denotes a support beam.
  • the support beam 1 is provided above the entrance of the car.
  • a rail 2 is provided in the lower part of the support beam 1 in such a manner as to extend in a horizontal direction along an upper edge part of the entrance of car.
  • a strap metal 3 is provided in the middle of the rail 2 and at one end thereof.
  • a pair of door hangers 4 is provided in the rail 2 in such a manner as to be movable in a horizontal direction.
  • a stopper 5 is provided on both sides of one door hanger 4.
  • a door panel 6 is suspended from each of the door hangers 4.
  • a motor 7 is provided in an upper part of one side of the support beam 1.
  • a pulley 8 is provided in an upper part of the other side of the support beam 1.
  • An endless toothed belt 9 is wound onto the motor 7 and the pulley 8. An appropriate tension is applied to the toothed belt 9.
  • An upper side of the toothed belt 9 is connected to an upper part of one belt gripper 10.
  • a lower part of one belt gripper 10 is connected to one door hanger 4.
  • a lower side of the toothed belt 9 is connected to the other belt gripper 10.
  • a lower part of the other belt gripper 10 is connected to the other door hanger 4.
  • a position switch 11 is provided on one side of the support beam 1 above one door hanger 4.
  • a door control device (not shown) is connected to the output of the position switch 11.
  • a first intercepting plate (a first intercepting body) 12 is provided in a door stopper side upper part of one door hanger 4.
  • a second intercepting plate (a second intercepting body) 13 is provided in a door pocket side upper part of one door hanger 4. The first intercepting plate 12 and the second intercepting plate 13 are arranged on the same plane in such a manner as to be parallel to the door panel 6.
  • the door control device discriminates between a fully open condition and a fully closed condition of the door panel 6.
  • Figure 3 is a principal-part structural diagram of the door operator of an elevator in Embodiment 1 of the present invention.
  • the position switch 11 opens downward.
  • the position switch 11 is provided with a first holding portion 11a, a second holding portion 11b, and a connecting portion 11c.
  • the first holding portion 11a is attached to the support beam 1.
  • the second holding portion 11b is arranged nearer to the external side of the car than the first holding portion 11a.
  • the connecting portion 11c connects an upper end of the first holding portion 11a and an upper end of the second holding portion 11b.
  • a pair of photo transmitters 14a and 14b is held side by side on an inner side surface of the first holding portion 11a in a vertical direction.
  • the phototransmitters 14a and 14b are arranged, with the light emitting surfaces thereof facing the external side of the car.
  • a pair of photoreceivers 15a and 15b is held side by side on an inner side surface of the second holding portion 11b in a vertical direction.
  • the photoreceivers 15a and 15b are arranged, with the light receiving surfaces thereof facing the car side.
  • a first optical axis 16a which extends in a horizontal direction is formed between the lower side phototransmitter 14a and the lower side photoreceiver 15a.
  • Light emitted by the upper side phototransmitter 14b is received by the upper side photoreceiver 15b.
  • a second optical axis 16b which extends in a horizontal direction is formed between the upper side phototransmitter 14b and the upper side photoreceiver 15b.
  • the lower side phototransmitter 14a and the lower side photoreceiver 15a function as one phototransmitter/photoreceiver device.
  • the upper side phototransmitter 14b and the upper side photoreceiver 15b function as one phototransmitter/photoreceiver device.
  • the first intercepting plate 12 is integrally formed in the shape of the letter L. Specifically, the first intercepting plate 12 is provided with a horizontal portion 12a and a vertical portion 12b. The horizontal portion 12a is arranged in such a manner as to come into contact with the door stopper side of an upper part of the door panel 6. A long hole 12c is formed in the horizontal portion 12a. The long hole 12c is formed, with the longitudinal direction thereof being in a horizontal direction. The vertical portion 12b is formed in such a manner as to extend upward from the door stopper side of the horizontal portion 12a. An upper end of the vertical portion 12b is arranged in such a manner as to be above the first optical axis 16a and below the second optical axis 16b.
  • the second intercepting plate 13 is integrally formed in the shape of a hook. Specifically, the second intercepting plate 13 is provided with a horizontal portion 13a and a vertical portion (a first intercepting portion) 13b.
  • the horizontal portion 13a is arranged in such a manner as to come into contact with the door pocket side of an upper part of the door panel 6.
  • a long hole 13c is formed in the horizontal portion 13a.
  • the long hole 13c is formed, with the longitudinal direction thereof being in a horizontal direction.
  • the vertical portion 13b is formed in such a manner as to extend upward from the door pocket side of the horizontal portion 13a.
  • An upper end of the vertical portion 13b is arranged in such a manner as to be above the first optical axis 16a and below the second optical axis 16b.
  • a protrusion portion (a second intercepting portion) 13d is formed in such a manner as to protrude in a vertical direction from the upper end of the vertical portion 13b to the middle side of the door panel 6. That is, the protrusion portion 13d is formed to be wider in the opening and closing direction of the door panel 6 than in the vertical portion 13b.
  • a lower edge part of the protrusion portion 13d is arranged above the first optical axis 16a and below the second optical axis 16b.
  • An upper edge part of the protrusion portion 13d is arranged above the second optical axis 16b and below a lower surface of the connecting portion 11c of the position switch 11.
  • a pair of bolts 17 pierces through each of the long hole 12c of the first intercepting plate 12 and the long hole 13c of the second intercepting plate 13 from the external side of the car. These bolts 17 are screwed into an upper part of the door panel 6. The first intercepting plate 12 and the second intercepting plate 13 are fixed by these bolts 17 to the upper part of the door panel 6. By loosening these bolts 17, the positions of the first intercepting plate 12 and the second intercepting plate 13 can be adjusted in the opening and closing direction of the door panel 6.
  • Figure 4 is a front view to explain the positional relationship between the position switch and the intercepting plates obtained when the door operator of an elevator in Embodiment 1 of the present invention is fully open.
  • the first intercepting plate 12 when the door panel 6 is fully open, the first intercepting plate 12 is arranged on the internal side of the position switch 11. The upper end of the vertical portion 12b of the first intercepting plate 12 is arranged above the first optical axis 16a and below the second optical axis 16b. For this reason, the first intercepting plate 12 intercepts only the first optical axis 16a. In this case, only the lower side photoreceiver 15a ceases to receive light. In this condition, the door control device determines that the door panel 6 is fully open.
  • Figure 5 is a front view to explain the positional relationship between the position switch and the intercepting plates obtained when the door operator of an elevator in Embodiment 1 of the present invention is fully closed.
  • the second intercepting plate 13 is arranged on the internal side of the position switch 11. At this time, the upper end of the vertical portion 13b of the second intercepting plate 13 is arranged above the first optical axis 16a and below the second optical axis 16b. For this reason, the vertical portion 13b of the second intercepting plate 13 intercepts the first optical axis 16a.
  • the lower edge part of the protrusion portion 13d of the second intercepting plate 13 is arranged above the first optical axis 16a and below the second optical axis 16b.
  • the upper edge part of the protrusion portion 13d of the second intercepting plate 13 is above the second optical axis 16b and below the lower surface of the connecting portion 11c of the position switch 11. For this reason, the protrusion portion 13d of the second intercepting plate 13 intercepts the second optical axis 16b.
  • the protrusion portion 13d of the second intercepting plate 13 intercepts the second optical axis 16b.
  • the vertical portion 13b of the second intercepting plate 13 does not intercept the first optical axis 16a.
  • the protrusion portion 13d of the second intercepting plate 13 maintains the condition of intercepting the second optical axis 16b.
  • the vertical portion 13b of the second intercepting plate 13 intercepts the first optical axis 16a. In this case, both the lower side photoreceiver 15a and the upper side photoreceiver 15b cease to receive light. In this condition, the door control device determines that the door panel 6 is fully closed.
  • the light receiving condition of the position switch 11 differs from the condition in which the door panel 6 is fully open to the condition in which the door panel 6 is fully closed. For this reason, with one position switch 11, it is possible to discriminate between a fully open condition and a fully closed condition of the door of an elevator. That is, with an inexpensive system, it is possible to discriminate between a fully open condition and a fully closed condition of the door of an elevator.
  • the protrusion portion 13d of the second intercepting plate 13 is formed to be wider than the vertical portion 13b in the opening and closing direction of the door panel 6. For this reason, even when the second intercepting plate 13 is attached somewhat aslant, the protrusion portion 13d always intercepts the second optical axis 16b while the vertical portion 13b is intercepting the first optical axis 16a. Therefore, it is possible to obtain a high-reliability system which prevents a wrong determination on the position of the door panel 6.
  • the protrusion portion 13d of the second intercepting plate 13 protrudes to the middle side of the door panel 6. For this reason, it is possible to minimize the distance between the outer sides of the first intercepting plate 12 and the second intercepting plate 13. As a result of this, even if the configuration is such that the second intercepting plate 13 protrudes from the door pocket side of the door operator when the door panel 6 is fully open, it is possible to minimize the protruding amount. That is, it is possible to minimize the effect of the second intercepting plate 13 on the necessary front size of the shaft.
  • the photoreceivers 15a and 15b are arranged, with the light receiving surfaces thereof facing the car side. That is, the light receiving surfaces of the photoreceivers 15a and 15b face the side opposite to the hall. For this reason, disturbance light such as sunlight is prevented from directly entering the photoreceivers 15a and 15b. As a result of this, it is possible to prevent a wrong determination on the position of the door panel 6.
  • the position of the first intercepting plate 12 and the position of the second intercepting plate 13 may be reversed.
  • the second intercepting plate 13 intercepts the first optical axis 16a and the second optical axis 16b.
  • the first intercepting plate 12 intercepts only the first optical axis 16a. Even in the case of this arrangement of the first intercepting plate 12 and the second intercepting plate 13, it is possible to obtain the same effect as in Embodiment 1.
  • the position switch 11 may be a phototransmitter/photoreceiver device in which the reflection of light is used.
  • the phototransmitter and the photoreceiver are arranged on the same side with respect to the intercepting plate. And light emitted by the phototransmitter is reflected on the intercepting plate and received by the photoreceiver. If the door control device determines the position of the panel door 6 according to the light receiving condition of this photoreceiver, the same effect as in Embodiment 1 can be obtained.
  • Figure 6 is a perspective view of a position switch used in the door operator of an elevator in Embodiment 2 of the present invention.
  • Figure 7 is a cross-sectional view of the position switch used in the door operator of an elevator in Embodiment 2 of the present invention.
  • like numerals refer to like or corresponding parts as in Embodiment 1 and description of these parts are omitted.
  • a first holding portion 11a is formed to be wider than a second holding portion 11b in the opening and closing direction of the door panel 6. At least the first holding portion 11a is formed with the property of suppressing the reflection of disturbance light 18.
  • the surface of the first holding portion 11a is colored black.
  • a concave portion is formed on an inner side surface of the second holding portion 11b. Photoreceivers 15a and 15b are attached to a bottom surface of the concave portion. As a result of this, the photoreceivers 15a and 15b are arranged in a manner recessed from the inner side surface of the second holding portion 11b.
  • the photoreceivers 15a and 15b are arranged in a manner recessed from the inner side surface of the second holding portion 11b. For this reason, it is possible to suppress disturbance light 18 such as sunlight from directly entering the photoreceivers 15a and 15b. Consequently, it is possible to prevent a wrong determination on the arrangement of the door panel 6 due to the disturbance light 18.
  • the first holding portion 11a of the position switch 11 is formed to be wider than the second holding portion 11b in the opening and closing direction of the door panel 6. For this reason, it is possible to intercept the disturbance light 18 reflected from the support beam 1 and the like entering the photoreceivers 15a and 15b by means of the side edge part of the first holding portion 11a. Furthermore, at least the first holding portion 11a is formed with the property of suppressing the reflection of disturbance light 18. That is, the reflection of disturbance light 18 in the first holding portion 11a is suppressed. Consequently, it is possible to prevent a wrong determination on the position of the door panel 6.
  • Figure 8 is a perspective view of a position switch used in the door operator of an elevator in Embodiment 3 of the present invention.
  • like numerals refer to like or corresponding parts as in Embodiment 1 and description of these parts are omitted.
  • an indication device 19 is provided on a surface, facing to the outside of the car, of a second holding portion 11b of a position switch 11.
  • the indication device 19 indicates the light receiving condition of a lower side photoreceiver 15a. For example, the indication device 19 lights up or blinks when the first optical axis 16a is intercepted.
  • the indication device 19 indicates the light receiving condition of the lower side photoreceiver 15a. For this reason, when the door panel 6 is fully open, it is possible to easily carry out the position adjustment of the position switch 11 and the first intercepting plate 12. Furthermore, when the door panel 6 is fully closed, it is possible to easily carry out the position adjustment of the position switch 11 and the second intercepting plate 13.
  • the operator can make a judgment easily as to whether the door panel 6 is fully open or fully closed. For this reason, it is unnecessary to indicate a fully open condition and a fully closed condition of the door panel 6 in a discriminated manner. That is, it is possible to reduce the number of the indication states and the number of the indication devices 19 compared to the case where the light receiving condition of the lower side photoreceiver 15a and the upper side photoreceiver 15b are indicated in a discriminated manner. Consequently, it is possible to adjust the positions of the position switch 11, the first intercepting plate 12, and the second intercepting plate 13 using an inexpensive indication device 19.
  • the door operator of an elevator of the present invention can be used in an elevator which discriminates between a fully open condition and a fully closed condition of the door.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Door Apparatuses (AREA)
EP10860697.1A 2010-12-15 2010-12-15 Elevator door device Active EP2653425B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/072538 WO2012081090A1 (ja) 2010-12-15 2010-12-15 エレベータのドア装置

Publications (3)

Publication Number Publication Date
EP2653425A1 EP2653425A1 (en) 2013-10-23
EP2653425A4 EP2653425A4 (en) 2017-10-11
EP2653425B1 true EP2653425B1 (en) 2018-09-05

Family

ID=46244217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10860697.1A Active EP2653425B1 (en) 2010-12-15 2010-12-15 Elevator door device

Country Status (5)

Country Link
EP (1) EP2653425B1 (ko)
JP (1) JP5494823B2 (ko)
KR (1) KR101449888B1 (ko)
CN (1) CN103261081B (ko)
WO (1) WO2012081090A1 (ko)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015189937A1 (ja) * 2014-06-11 2015-12-17 三菱電機株式会社 エレベータードアの制御装置
BR102016030720B1 (pt) * 2016-12-28 2022-06-21 Brascabos Componentes Elétricos E Eletrônicos Ltda Chave óptica de segurança para máquinas eletrodomésticas
JP6491370B1 (ja) * 2018-01-29 2019-03-27 東芝エレベータ株式会社 ドアの検知システム
CN110697528A (zh) * 2019-09-10 2020-01-17 宁夏电通物联网科技股份有限公司 基于漫反射检测轿门开关状态的检测装置及电梯及检测方法
JP7296063B1 (ja) 2022-09-14 2023-06-22 フジテック株式会社 エレベータのかごドア検出装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60218282A (ja) 1984-04-10 1985-10-31 三菱電機株式会社 エレベ−タの扉制御装置
JPH07106861B2 (ja) * 1989-12-15 1995-11-15 三菱電機株式会社 エレベータのドア制御装置
US5881844A (en) * 1996-11-07 1999-03-16 Otis Elevator Company Secondary positioning system for elevator car doors
JP3920528B2 (ja) * 2000-04-07 2007-05-30 株式会社日立ビルシステム エレベータの位置検出装置
JP2001354379A (ja) * 2000-06-14 2001-12-25 Mitsubishi Electric Corp エレベータのかごの出入口開閉装置
JP4640883B2 (ja) * 2000-08-09 2011-03-02 三菱電機株式会社 エレベータの戸の制御装置
JP4392539B2 (ja) 2006-07-19 2010-01-06 株式会社日立製作所 エレベータ制御装置
JP2010137956A (ja) 2008-12-11 2010-06-24 Toshiba Elevator Co Ltd エレベータドア装置
EP2502870B1 (en) * 2009-11-18 2016-03-30 Mitsubishi Electric Corporation Elevator door control device

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
EP2653425A1 (en) 2013-10-23
CN103261081B (zh) 2015-08-05
EP2653425A4 (en) 2017-10-11
WO2012081090A1 (ja) 2012-06-21
KR101449888B1 (ko) 2014-10-10
JP5494823B2 (ja) 2014-05-21
KR20130105691A (ko) 2013-09-25
CN103261081A (zh) 2013-08-21
JPWO2012081090A1 (ja) 2014-05-22

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