EP2263963B1 - Elevator car door lock - Google Patents

Elevator car door lock Download PDF

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Publication number
EP2263963B1
EP2263963B1 EP08740564.3A EP08740564A EP2263963B1 EP 2263963 B1 EP2263963 B1 EP 2263963B1 EP 08740564 A EP08740564 A EP 08740564A EP 2263963 B1 EP2263963 B1 EP 2263963B1
Authority
EP
European Patent Office
Prior art keywords
car
door
roller
landing
movable
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
EP08740564.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2263963A4 (en
EP2263963A1 (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 EP2263963A1 publication Critical patent/EP2263963A1/en
Publication of EP2263963A4 publication Critical patent/EP2263963A4/en
Application granted granted Critical
Publication of EP2263963B1 publication Critical patent/EP2263963B1/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
    • B66B13/02—Door or gate operation
    • B66B13/14—Control systems or devices
    • B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
    • B66B13/18—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position without manually-operable devices for completing locking or unlocking of doors

Definitions

  • the present invention relates to an apparatus that mechanically locks an elevator car door at a position that is outside a landing zone that constitutes a locking release zone.
  • a door on a side near an elevator car is generally opened by a door driving apparatus that is disposed on the elevator car. If the car stops between floors (outside a landing zone) due to a power outage, for example, and a passenger manually opens the car door by force, there is a risk that the passenger may fall into the hoistway.
  • An elevator car door locking apparatus prevents such manual opening of the car door.
  • WO 2006/080094 is an example of a conventional elevator car door locking apparatus.
  • conventional elevator car door locking apparatuses such as that described in WO 2006/080094 :
  • Patent Literature 1 WO 2006/080094 A1
  • the landing vane since the landing vane is positioned so as to come into contact with the second roller when it moves in the door opening direction (to the left), the landing vane must be placed closer to a door opening side (to the left) than the first roller and the second roller. If the door is centrally opening as shown in Figure 1 , the landing vane can be placed outside the doorway, and will not interfere with the boarding and leaving of users.
  • a landing vane does not project into a doorway even if applied to side-opening doors. Passengers cannot gain access to the landing vane even if a floor alignment position of a car drifts. Additionally, interference between engaging apparatus and the landing vane does not arise between the car and a landing doorsill.
  • an elevator car door locking apparatus constituted by: a cam that is fixed to a door hanger that suspends a side opening door of a car; a stationary hook that is fixed to the door hanger; a first roller that is mounted to the car, and that moves downward due to pressure from the cam that accompanies movement of the door hanger; a second roller that is mounted to the car, and that contacts a landing vane that is mounted vertically in a hoistway in a vicinity of a landing closer to a door closing direction side than a path of the first roller due to movement of the car and moves upward based on the downward movement of the first roller; and a movable hook that is mounted to the car, and that faces the stationary hook and releases locking on the stationary hook based on the upward movement of the second roller.
  • the present invention includes: a cam that is fixed to a door hanger that suspends a side opening door of a car; a stationary hook that is fixed to the door hanger; a first roller that is mounted to the car, and that moves downward due to pressure from the cam that accompanies movement of the door hanger; a second roller that is mounted to the car, and that contacts a landing vane that is mounted vertically in a hoistway in a vicinity of a landing closer to a door closing direction side than a path of the first roller due to movement of the car and moves upward based on the downward movement of the first roller; and a movable hook that is mounted to the car, and that faces the stationary hook and releases locking on the stationary hook based on the upward movement of the second roller, the landing vane does not project into a doorway even if applied to a side opening door. Passengers cannot gain access to the landing vane even if a floor alignment position of a car drifts. Additionally, interference between engaging apparatus and the landing vane does not arise between the
  • FIG 3 is a front elevation that shows an overall view of the elevator car door locking apparatus of the present invention.
  • a side opening door is constituted by a first door 1 and a second door 2.
  • a first door hanger 3 suspends the first door 1
  • a second door hanger 4 suspends the second door 2.
  • the first door hanger 3 and the second door hanger 4 can move horizontally by means of a guide rail 5. In other words, the first door 1 and the second door 2 can be moved by means of the first door hanger 3 and the second door hanger 4.
  • Figure 4 shows a basic concept of the locking apparatus according to the present invention.
  • the car door locking apparatus that constitutes the present invention is divided into three groups: (i) parts 6 that are mounted to the first door hanger 3; (ii) parts 7 that are mounted in a stationary state inside the hoistway; and (iii) parts 8 that are mounted to a car (parts other than parts 6 and parts 7 in Figure 4 ).
  • the parts 8 will be explained as being mounted to the car, but are not limited to this. For example, they may also be mounted to a door driving apparatus that is installed on the car.
  • the parts that are mounted to the first door hanger 3 include a stationary hook 9 and a cam 10.
  • the cam 10 has: a pair of inclined portions 10a and 10c; and a flat portion 10b that links the pair of inclined portions 10a and 10c.
  • This cam 10 is mounted to a lower portion of a cam bracket (not shown) such that an inclined portion 10a is oriented toward a door opening direction, and the flat portion 10b is horizontal.
  • the parts that are mounted inside the hoistway include landing vanes 11 that are mounted in a stationary state inside the hoistway at respective landings. These landing vanes 11 are mounted vertically in the hoistway in a vicinity of the landings that is closer to a door closing direction side than a path of a first roller 12 (described below) due to movement of the car. By disposing the landing vanes 11 behind jambs of door frames, there is no adverse effect on appearance even in the case of glass doors or glass hoistways.
  • the parts that are mounted to the car include the parts described below.
  • a first arm 13 that has a first end that is installed in the first roller 12
  • a first fixed mediating means 14 that is fixed to the car and that has a bearing
  • a first movable mediating means 15 that is constituted by a bearing and that is freely movable.
  • a second end of the first arm 13 is raised (lowered) by means of the first fixed mediating means 14.
  • a second arm 16 that has a first end that is connected by a hinge to the first movable mediating means 15, and a second movable mediating means 18 that is connected by a hinge with a second end of the second arm 16, that is constituted by a bearing, and that moves on a guide 17 that is disposed level with a car floor in a locked state.
  • the first movable mediating means 15 is constituted by a bearing, an angle that is formed by the first arm 13 and the second arm 16 is not constant.
  • There is a movable hook 19 that is fixed to the guide 17, and a second fixed mediating means 20 that is fixed to the car, that is constituted by a bearing, and that is connected by a hinge to the movable hook 19.
  • the movable hook 19 is rotatable around the second fixed mediating means 20.
  • a third arm 21 that has a first end that is fixed to the second arm 16 has a second end that is connected by a hinge to a second roller 22 that has a bearing.
  • the second roller 22 is movable vertically along a landing vane 11 when a landing vane 11 is present.
  • the second roller 22 and the landing vanes 11 are arranged so as not to contact each other when the door is fully closed.
  • Figure 5 represents a configuration of the present car door locking apparatus if a passenger forces the door open when the car has stopped at a position that is distant from a landing. If the door is opened by manual operation by the passenger, the stationary hook 9 and the cam 10 move to the left interdependently with the door.
  • the first roller 12 moves so as to be pressed downward by the inclined portion 10a of the cam 10 while contacting the cam 10. As the first roller 12 moves downward, the left end of the first arm 13 moves downward, and the right end of the first arm 13 moves upward with the first fixed mediating means 14 as an axis. In other words, the first arm 13 rotates counterclockwise by means of the first fixed mediating means 14.
  • the second movable mediating means 18 With the upward movement of the right end of the first arm 13, the second movable mediating means 18 that is installed on the first end of the second arm 16 moves along the guide 17 to the left.
  • the reason that the second movable mediating means 18 only moves to the left and the movable hook 19 does not move vertically is because the moment due to the resultant force between the force of the second arm 16 that activates the second movable mediating means 18 and the frictional force of the second movable mediating means 18 is designed so as to be less than the moment that rotates the movable hook 19 around the second fixed mediating means 20.
  • Methods for adjusting the frictional force of the second movable mediating means 18 include methods such as knurling a surface of the second movable mediating means 18, for example.
  • Figure 6 represents a configuration of the present car door locking apparatus if the door is opened when the car has stopped at or in a vicinity of a landing floor.
  • the second movable mediating means 18 that is installed on the first end of the second arm 16 tries to move left along the guide 17 with the upward movement of the right end of the first arm 13.
  • the second roller 22 that is connected by a hinge to the first end of the third arm 21 that is fixed to the second arm 16 contacts a landing vane 11 and moves upward along the landing vane 11. Since the angle that is formed by the second arm 16 and the third arm 21 is always constant, the second movable mediating means 18 cannot move left and only moves upward.
  • the guide 17 and the movable hook 19 also rotate clockwise around the second fixed mediating means 20 due to the upward movement of the second movable mediating means 18. Because of this, when the stationary hook 9 tries to move to the left, the stationary hook 9 and the movable hook 19 do not come into contact, the stationary hook 9 can move left, and the first door 1 can move left.
  • the second arm 16 shares the first movable mediating means 15 with the first arm 13. Since the second arm 16 has a fixed length, the second movable mediating means 18, which constitutes a hinge point at the second end of the second arm 16, is moved to the left. The second roller 22 moves along the guide 17 toward the landing vane 11 that is to the left until it contacts the landing vane 11. In other words, the movable hook 19 is held in a locked position until the second roller 22 contacts the landing vane 11.
  • Figure 6 shows the locking apparatus in a state in which the movable hook 19 is released when the door of the car is inside a locking release zone.
  • the second roller 22 contacts the landing vane 11, and the second movable mediating means 18 is prevented from further horizontal displacement to the left.
  • the first arm 13 continues rotating until the first roller 12 rides from the inclined portion of the cam 10 onto the lower flat portion 10b.
  • the second movable mediating means 18 is also pushed along upward.
  • the movable hook 19 is coupled by a hinge to the second fixed mediating means 20, which plays a role as a hinge point that is disposed in a stationary state on top of the car.
  • the movable hook 19 rotates clockwise around the second fixed mediating means 20 that also serves the role of a hinge point.
  • the stationary hook 9 can thereby pass through without contacting the movable hook 19.
  • the stationary hook 9 passes the movable hook 19, and the first roller 12 remains on the flat portion 10b of the cam 10 until interference between these parts is prevented sufficiently. In other words, the movable hook 19 is held in a locking release position. Then, when the first roller 12 passes the flat portion 10b and moves to the inclined portion 10c, the movable hook 19 is returned from the locking release position to the locked position.
  • the door is explained as moving to the left, but is not limited to this. Right and left may also be reversed.
  • FIG. 8 When the first door 1 is opened, a moment is generated in a reverse direction to a direction that a first arm 13 rotates.
  • an elastic body 23 may be included between a car and a right end of the first arm 13.
  • the elastic body 23 may be a spring, or rubber, for example.
  • a force in a door closing direction can be generated in a first door 1 when the first door 1 is fully closed or in a vicinity of fully closed.
  • a clockwise moment is generated in the first arm 13, applying a force to the first door 1 in a fully closing direction by means of a cam 10.
  • the present embodiment will be explained using Figures 9 and 10 . Even if the first door 1 enters the closed state from the open state, the movable hook 19 may remain rotated in the direction of unlocking and not return to its original position due to frictional forces in the second movable mediating means 18, etc.
  • an elastic body 24 that is fixed to a first door 1, a first door hanger 3, or a cam 10 moves a first roller 12 upward by coming into contact with the first roller 12 and pressing upward, returning a second movable mediating means 18 to its original position.
  • the elastic body 24 may be a pin, for example.
  • a car stopping means is included that is constituted by a switch 25 and a contact 26.
  • a car is prevented from moving in an unlocked state in which a movable hook 19 is rotated in a direction of unlocking.
  • the present invention relates to an apparatus that mechanically locks an elevator car door at a position that is outside a landing zone that constitutes a locking release zone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Door Apparatuses (AREA)
EP08740564.3A 2008-04-17 2008-04-17 Elevator car door lock Active EP2263963B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2008/057494 WO2009128155A1 (ja) 2008-04-17 2008-04-17 エレベーターのカゴドアロック装置

Publications (3)

Publication Number Publication Date
EP2263963A1 EP2263963A1 (en) 2010-12-22
EP2263963A4 EP2263963A4 (en) 2014-04-16
EP2263963B1 true EP2263963B1 (en) 2015-03-18

Family

ID=41198867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08740564.3A Active EP2263963B1 (en) 2008-04-17 2008-04-17 Elevator car door lock

Country Status (5)

Country Link
EP (1) EP2263963B1 (zh)
JP (1) JP5312449B2 (zh)
KR (1) KR101274421B1 (zh)
CN (1) CN101983170B (zh)
WO (1) WO2009128155A1 (zh)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103402905B (zh) * 2011-03-03 2015-08-12 通力股份公司 电梯楼层门的解锁控制
WO2014191380A1 (de) * 2013-05-28 2014-12-04 Inventio Ag Aufzugsschacht mit verkleinerter schachtgrube bzw. verkleinertem schachtkopf
JP6065773B2 (ja) * 2013-07-10 2017-01-25 フジテック株式会社 エレベータのドア装置
CN106687405B (zh) * 2014-09-11 2019-06-18 株式会社日立制作所 电梯轿厢门锁装置以及电梯的门装置
EP3331803B1 (en) 2015-08-04 2020-06-03 Otis Elevator Company Elevator car door interlock
CN105800437B (zh) * 2016-05-26 2017-10-03 永大电梯设备（中国）有限公司 电梯轿厢门防扒装置
CN106081820B (zh) * 2016-08-09 2018-04-10 日立电梯（中国）有限公司 电梯轿门锁装置以及电梯
JP6297229B1 (ja) * 2017-01-18 2018-03-20 三菱電機ビルテクノサービス株式会社 エレベーター故障の遠隔復旧システム及びエレベーター故障の復旧システム
CN107601241A (zh) * 2017-10-12 2018-01-19 梁润婵 一种电梯轿厢门锁结构
CN109720971B (zh) 2017-10-27 2020-07-14 上海三菱电梯有限公司 自带轿门锁的电梯轿厢门机装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS598629B2 (ja) * 1976-12-29 1984-02-25 三菱電機株式会社 エレベ−タ装置
JPS59194984A (ja) * 1983-04-19 1984-11-05 三菱電機株式会社 エレベ−タのドア開閉装置
JPH01226691A (ja) * 1988-03-01 1989-09-11 Mitsubishi Electric Corp エレベータのかご戸ロック装置
JPH0213591A (ja) * 1988-07-01 1990-01-17 Hitachi Ltd エレベータかご扉鎖錠装置
FI96676C (fi) * 1994-10-31 1996-08-12 Kone Oy Hissin korinoven lukituslaitteisto ja menetelmä korinoven lukitsemiseksi ja vapauttamiseksi
EP1841682B1 (en) * 2005-01-28 2014-03-19 Mitsubishi Denki Kabushiki Kaisha Elevator car door locking apparatus
WO2006097997A1 (ja) * 2005-03-15 2006-09-21 Mitsubishi Electric Corporation エレベータのかご扉のインターロック装置

Also Published As

Publication number Publication date
JP5312449B2 (ja) 2013-10-09
WO2009128155A1 (ja) 2009-10-22
KR20100117147A (ko) 2010-11-02
EP2263963A4 (en) 2014-04-16
CN101983170B (zh) 2013-03-27
JPWO2009128155A1 (ja) 2011-08-04
KR101274421B1 (ko) 2013-06-14
EP2263963A1 (en) 2010-12-22
CN101983170A (zh) 2011-03-02

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