KR20140143181A - Safety device for elevator - Google Patents

Safety device for elevator Download PDF

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Publication number
KR20140143181A
KR20140143181A KR20147028462A KR20147028462A KR20140143181A KR 20140143181 A KR20140143181 A KR 20140143181A KR 20147028462 A KR20147028462 A KR 20147028462A KR 20147028462 A KR20147028462 A KR 20147028462A KR 20140143181 A KR20140143181 A KR 20140143181A
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KR
South Korea
Prior art keywords
door
movable
landing
disposed
elevator
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KR20147028462A
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Korean (ko)
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KR101624825B1 (en
Inventor
마사히코 고케츠
Original Assignee
미쓰비시덴키 가부시키가이샤
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Application filed by 미쓰비시덴키 가부시키가이샤 filed Critical 미쓰비시덴키 가부시키가이샤
Priority to PCT/JP2012/057343 priority Critical patent/WO2013140575A1/en
Publication of KR20140143181A publication Critical patent/KR20140143181A/en
Application granted granted Critical
Publication of KR101624825B1 publication Critical patent/KR101624825B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02Door or gate operation
    • B66B13/14Control systems or devices
    • B66B13/16Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
    • B66B13/18Door 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
    • B66B13/20Lock mechanisms actuated mechanically by abutments or projections on the cages
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02Door or gate operation
    • B66B13/14Control systems or devices
    • B66B13/16Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators

Abstract

The elevator safety device includes a locking device 16, a unlocking device 34, and an operating device 36. The locking device (16) corrects the landing door (10). The locking device 16 is unlocked by the opening operation of the elevator car door 22. The unlocking device (34) unlocks the locking device (16) by performing the first operation from the landing position. The detecting device (35) is provided with a switch (39). The actuating device 36 includes a movable portion 40, a mechanical portion 41, and a holding portion 42. [ The movable portion 40 is displaced to the first position and the second position. The mechanism section 41 places the movable section 40 at the second position by performing the first operation with respect to the unhardening device 34. [ The holding portion 42 maintains the state in which the movable portion 40 is disposed at the second position. When the movable portion 40 is disposed at the second position, the movable portion 40 contacts the detecting device 35 when the landing door 10 is closed, and operates the switch 39.

Description

[0001] SAFETY DEVICE FOR ELEVATOR [0002]

The present invention relates to a safety device for an elevator.

Recently, elevators without machine room are increasing. An elevator without a machine room does not have a machine room at the top of the building. Equipment necessary for the elevator, for example, a control panel, is installed in the hoistway. Therefore, the maintenance source of the elevator enters the hoistway frequently during maintenance work.

When entering the hoistway of the elevator, the maintenance worker first unlocks the locking device of the landing door by a predetermined key. When the locking device is unlocked and the landing door is opened, the maintenance work is performed after the safety switch is turned off (operated). The safety device is installed, for example, in a hoistway or a car. The elevator is provided with an interlock mechanism in a landing door device. Therefore, while the landing door is open, the elevator car of the elevator does not travel. Further, if the safety switch is operated, the elevator car of the elevator does not travel.

When the elevator is being repaired, the maintenance worker may forget to turn off the safety switch. In this case, when the landing door is closed, the elevator car of the elevator becomes in a state in which it can run.

The following Patent Document 1 discloses an apparatus for automatically operating a safety switch when a maintenance source unlocks the locking device.

Patent Document 1: JP-A-8-91730

In the apparatus described in Patent Document 1, the maintenance source detects that the landing door is opened by using a relay. Therefore, when the power supply of the control apparatus is shut off, the information thus far is reset. Thereafter, there was a problem that accurate detection could not be performed when the power was restored.

An object of the present invention is to provide an elevator safety device capable of reliably detecting that a maintenance worker unhooks a landing door even when power supply shutdown or the like occurs .

A safety device for an elevator according to the present invention is a safety device for an elevator which is provided at a platform of an elevator and includes a platform door for opening and closing a platform entrance and a platform door for locking and unlocking the platform door, A unlocking device for unlocking the locking device by performing a predetermined first operation from the landing gear, and a locking device provided on the fixed body of the hoistway, And an operating device provided on the landing door, wherein the operating device includes: a movable part displaced to a predetermined first position and a second position; and a second movable part moving the movable part And a holding portion for holding the movable portion in a state in which the movable portion is disposed at the second position, wherein when the movable portion is disposed at the second position, When the door is closed tonic is to contact with the detection device, operating a switch.

According to the elevator safety device of the present invention, it is possible to reliably detect that the maintenance worker unhooks the landing door even when the power supply is cut off or the like.

Fig. 1 is a diagram showing the entire configuration of an elevator.
2 is a side view showing a substantial part of an elevator.
3 is a view showing a configuration of a safety device for an elevator according to Embodiment 1 of the present invention.
4 is a diagram showing the configuration of a safety device for an elevator according to the first embodiment of the present invention.
5 is a front view showing an operating device of a safety device of an elevator according to Embodiment 1 of the present invention.
6 is a plan view showing an operating device of a safety device of an elevator according to Embodiment 1 of the present invention.
7 is a diagram showing a circuit configuration of a safety device for an elevator according to the first embodiment of the present invention.
8 is a front view showing an operating device of a safety device of an elevator according to a second embodiment of the present invention.
9 is a plan view showing an operating device of a safety device of an elevator according to a second embodiment of the present invention.
10 is a diagram showing a circuit configuration of a safety device for an elevator according to a third embodiment of the present invention.
11 is a diagram showing a configuration of a safety device of an elevator according to Embodiment 4 of the present invention.
Fig. 12 is a diagram showing a configuration of a safety device for an elevator according to Embodiment 5 of the present invention. Fig.

The present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same or equivalent parts are denoted by the same reference numerals. The redundant description is appropriately simplified or omitted.

Embodiment 1

1 is a view showing an overall configuration of an elevator.

1, reference numeral 1 denotes a hoistway of an elevator, and 2 denotes a platform of an elevator. The platform 2 is provided, for example, in each floor of the building. 3 is the elevator car of the elevator, and 4 is the balance weight. The elevator car (3) ascends and descends in the hoistway (1). The elevator car 3 and the balance weight 4 are suspended in the hoistway 1 by the main rope 5.

6 is a traction machine of an elevator. The hoist machine 6 is provided, for example, in a machine room provided at an upper portion of the hoistway 1. [ In the case of an elevator without a machine room, the hoisting machine 6 is provided, for example, in the hoistway 1 (top portion, pit portion). A part of the main rope 5 is wound around a driving sheave of the hoisting machine 6. When (the driving sheave of) the traction machine 6 rotates, the main rope 5 moves in its longitudinal direction. The elevator car (3) ascends and descends in the hoistway (1) in the direction along the moving direction of the main rope (5). The balance weight 4 ascends and descends in the hoistway 1 in a direction opposite to the elevator car 3. [

7 is a control device for controlling the operation of the elevator. The control device 7 is provided, for example, in a machine room. In the case of an elevator without a machine room, the control device 7 is provided in the hoistway 1, for example. The traction machine 6 is controlled by the control device 7. [

8 is a plate, and 9 is a landing detection device. The conception detecting device 9 is provided in the elevator car 3. The plate 8 is fixed to a fixed body (for example, a hoistway wall) of the hoistway 1. [ The plate 8 is provided in correspondence with each landing platform 2. The plate 8 is arranged so as to oppose the conception detecting device 9 when the elevator car 3 is conceived on the platform 2 (when the elevator car 3 stops at the height of the platform 2) . When the plate 8 is detected, the conception detecting device 9 detects that the elevator car 3 is conceived on the landing platform 2.

The elevator car (3) has an elevator car door device. Each landing platform 2 is provided with a landing door device.

Hereinafter, the configuration of the elevator car door device and the configuration of the landing door device will be described in detail with reference to Figs. 2 to 6. Fig. 2 is a side view showing a substantial part of an elevator. Fig. 2 shows a state in which the elevator car 3 is conceived on the landing platform 2. Fig. Fig. 3 and Fig. 4 are views showing the configuration of a safety device for an elevator according to the first embodiment of the present invention. Fig. Figs. 3 and 4 show a state in which the landing door device is viewed from the side of the car 3. Fig.

The landing door apparatus is provided with a landing door 10. The landing door 10 opens and closes the landing doorway. The landing door 10 is constituted by a door panel 11 and a door hanger 12 as a recess. The door panel 11 is a portion that actually opens and closes a landing doorway. The platform entrance is blocked by the door panel 11. The door hanger 12 is provided from the top to the top of the door panel 11. The door panel (11) hangs on the door hanger (12). The landing door 10 moves in the width direction thereof to open and close the landing doorway. Figs. 3 and 4 show a landing door 10 of a single piece opening type.

The movement of the landing door 10 during opening and closing is guided by the door rail 13 and the threshold (not shown). The door rail 13 is supported by the hanger case 14. The hanger case 14 is provided on a fixed body (for example, a hoistway wall) of the hoistway 1. The hanger case 14 is disposed at the upper portion of the platform entrance. The door rail 13 is horizontally arranged in the width direction at the upper portion of the landing entrance.

The door hanger 12 is provided with a plurality of door rollers 15 rotatable in both directions. The door roller (15) is placed on the upper surface of the door rail (13). The movement of the upper end of the landing door 10 is guided by the door roller 15 rolling on the door rail 13.

The landing door device is provided with a locking device 16. The locking device 16 is for locking the landing door 10. The latching device 16 is constituted by a fixing piece 17, a latch 18, and a detecting switch 19. The fixing piece 17 is fixed to the mounting plate 20. The mounting plate 20 is provided in the hanger case 14.

One end of the latch 18 is provided on the door hanger 12 via the shaft 21. [ The latch 18 moves so as to rotate bi-directionally about a shaft 21 within a predetermined angle. The shaft 21 is arranged horizontally so as to protrude from the door hanger 12 toward the hoistway 1 side. For this reason, the other end of the latch 18 moves up and down. The other end of the latch 18 has a hook shape. The other end of the latch 18 is caught by the distal end of the fixing piece 17, so that the opening operation of the landing door 10 is prevented. That is, the landing door 10 is corrected.

The detection switch 19 is a switch for detecting that the landing door 10 is completely closed. The detection switch 19 is provided on the mounting plate 20. The latch 18 has a protruding portion 18a at the other end. The detection switch 19 is arranged to match the position of the projection 18a. When the other end of the latch 18 is engaged with the distal end of the fixing piece 17 (that is, when the landing door 10 is corrected), the projecting portion 18a contacts the detection switch 19 from above .

The detection switch 19 of each landing platform 2 (each landing door device) is connected, for example, to the control device 7 in series. In all the landing door devices, when the protruding portion 18a contacts the detection switch 19, a predetermined signal is received by the control device 7. In this case, the control device 7 determines that the landing door 10 of all the landing platforms 2 is closed. The control device 7 permits the car 3 to travel when the landing door 10 of each landing platform 2 is completely closed.

When the protruding portion 18a of the platform door device is released from the detection switch 19, the signal is not received by the control device 7. [ In this case, the control device 7 determines that the landing door 10 of any landing platform 2 is not closed. The control device 7 does not permit the car 3 to travel if there is an open platform door 10. [

That is, the present elevator is provided with an interlock mechanism.

The landing door device does not have a driving device for driving the landing door 10. [ A driving device (a motor 31 described later) for driving the landing door 10 is provided in the elevator car door device. The elevator car door device is provided with an elevator car door (22). The motor 31 is for driving the elevator car door 22. The landing door device and the elevator car door device are provided with an interlock device 23 for interlocking the landing door 10 with the opening and closing operation of the elevator car door 22. The interlocking device 23 on the platform 2 side is constituted by a roller 24 and an arm 25 as recesses.

The roller 24 is provided at one end of the arm 25 so as to be rotatable in both directions. The rotary shaft of the roller 24 is disposed in parallel with the shaft 21. The roller 24 is arranged so as to protrude to the hoistway 1 side (the car 3 side) more than the landing door 10. [ The other end of the arm 25 is fixed to the shaft 21. The arm 25 extends obliquely upward from the shaft 21. The arm 25 is disposed so as to approach the side of the fixing piece 17 as it approaches the one end.

The elevator car door 22 opens and closes the elevator car entrance. The elevator car door (22) is constituted by a door panel (26) and a door hanger (27). The door panel 26 is a portion that actually opens and closes the elevator car doorway. The door of the elevator car is blocked by the door panel 26. The door hanger 27 is provided from the top to the top of the door panel 26. The door panel 26 is suspended from the door hanger 27. The elevator car door 22 moves in the width direction thereof to open and close the elevator car doorway.

The movement of the elevator car door 22 during opening and closing is guided by the door rail 28 and the threshold (not shown). The door rail 28 is supported on the hanger case 29. The hanger case (29) is provided on the front side of the car (3). The hanger case 29 is disposed at an upper portion of the elevator car doorway. The door rail 28 is horizontally arranged in the width direction at the upper portion of the elevator car doorway.

The door hanger 27 is provided with a plurality of door rollers 30 rotatable in both directions. The door roller 30 is placed on the upper surface of the door rail 28. The movement of the upper end of the elevator car door 22 is guided by the door roller 30 rolling on the door rail 28.

The driving force of the motor 31 is transmitted to the door hanger 27 (elevator car door 22) via the conversion means 32. [ That is, the conversion means 32 converts the rotational motion of the output shaft of the motor 31 by a predetermined mechanism, thereby opening and closing the elevator car door 22. [

The interlocking device (23) on the side of the car (3) is constituted by a pair of plates (33). The plate 33 is provided on the upper portion of the door panel 26. The plates 33 are arranged in parallel so as to face each other at a predetermined interval. The plate 33 is arranged so as to protrude more toward the landing platform 2 than the elevator car door 22. [

When the elevator car 3 lands on the landing platform 2, the rollers 24 are disposed between the plates 33. At this time, the roller (24) does not contact the plate (33). When the motor 31 is driven, the elevator car door 22 moves in a predetermined direction (opening direction: direction in which the door moves in the opening operation (right direction in Fig. 3)). When the elevator car door 22 is slightly moved in the opening direction, one of the plates 33 contacts the roller 24. By further moving the elevator car door 22 in the opening direction, the roller 24 is pushed by the plate 33. Thus, the arm 25 rotates about the shaft 21 in a predetermined direction (clockwise in Fig. 3).

The latch (18) is integrated with the arm (25). Therefore, the latch 18 also rotates about the shaft 21 in a predetermined direction. By this rotation, the latch 18 is disengaged from the fixing piece 17. The rotation of the arm 25 stops at a predetermined position. The lift door 10 moves in the opening direction together with the elevator car door 22 when the latch 18 is disengaged from the fixing piece 17 and the rotation of the arm 25 is stopped.

Thus, the locking device 16 is unlocked by the opening operation of the elevator car door 22 when the elevator car 3 is stopped at the landing platform 2.

When the latch 18 is disengaged from the fixing piece 17, the projection 18a is detached from the detection switch 19. [ Thereby, the control device 7 detects that the landing door 10 is open (not completely closed).

In the closing operation, the elevator car door 22 moves in a direction opposite to the opening direction (closing direction: direction in which the door moves in the closing operation (left direction in Fig. 3)). The platform door 10 is pushed by the other plate 33 and moves in the closing direction together with the elevator car door 22. When the landing door 10 is completely closed, the latch 18 is caught by the fixing piece 17, and the landing door 10 is corrected. When the latch 18 is caught by the fixing piece 17, the projection 18a comes into contact with the detection switch 19. [ Thus, the control device 7 detects that the landing door 10 is closed.

The landing door device further includes a unlocking device 34, a detecting device 35, and an operating device 36.

The unlocking device 34 is a device for unlocking the locking device 16. The elevator maintenance source unlocks the locking device 16 by performing a predetermined operation (first operation) on the unlocking device 34 from the landing station 2. The maintenance source can be constructed such that the key 37 is inserted into the hole of the landing door 10 from the landing platform 2 side and then the key 37 is rotated in a predetermined direction, I will unfreeze. When the above operation by the key 37 is performed, the unlocking device 34 rotates the arm 25 in the same direction as the opening operation of the elevator car door 22. Thereby, the latch 18 is disengaged from the fixing piece 17, and the landing door 10 is released.

The configuration of the unsealing device 34 is not limited to the above. As the unsealing device 34, a concealed type or T-shaped type may be employed. In the case where the separating device 34 has a different configuration, the separating operation (first operation) performed by the repairing person is a predetermined operation corresponding to the configuration of the separating device 34. [ For example, as an unlocking operation, it is required to insert a special tool between the landing door 10 and the door stopper portion 38 of the landing door apparatus and move the special tool upward (or downward) I do not mind.

The door stopper portion 38 is a portion close to the end face of the landing door 10 when the landing door 10 is closed. The door stopper portion 38 is a part of the landing door device. The door stopper portion 38 constitutes a fixed body of the hoistway 1. [

The detecting device 35 is a device for detecting the entry of the repair source into the hoistway 1 (inclusive of inclination). The detecting device (35) is provided with an electric switch (39). The detecting device (35) is provided on the fixed body of the hoistway (1). The detection device 35 is disposed at a position close to the landing door 10 when the landing door 10 is closed.

In this embodiment, as an example of the detecting device 35, a case in which the key portion of the detecting device 35 is constituted by only the switch 39 is shown. In the present embodiment, the switch 39 is fixed to the door stopper portion 38. [

The operation device 36 is a device for detecting the entry of a maintenance source into the detection device 35 when a release operation (first operation) is performed on the release device 34. [ For example, when the key 37 inserted in the hole of the landing door 10 rotates, the actuating device 36 converts the rotational motion into another motion by a predetermined mechanism to operate the switch 39 .

The operating device (36) is provided on the landing door (10). The operating device 36 includes a movable portion 40, a mechanism portion 41, a holding portion 42, and a releasing portion 47 (not shown in Figs. 1 to 4).

The movable portion 40 is displaced to a position for disabling the switch 39 (first position) and a position for actuating the switch 39 (second position). The movable portion 40 is disposed at the first position in normal operation (for example, during normal operation of the elevator).

The retaining portion 42 is for maintaining the state in which the movable portion 40 is disposed at the second position when the movable portion 40 is disposed at the second position. The holding portion 42 is composed of, for example, a mechanism for always applying a force to the movable portion 40 or a mechanism for locking the movable portion 40 so as not to move from the second position. When the movable portion 40 is disposed at the second position, the movable portion 40 does not return to the first position unless the holding function of the holding portion 42 is released.

The mechanism section 41 is constituted by a predetermined mechanism for arranging the movable section 40 at the second position when the unlocking operation is performed with respect to the unlocking device 34. [ For example, the mechanical section 41 converts a predetermined motion generated by the above-described unlocking operation into another motion, and displaces the movable section 40 to the second position. When the landing door 10 is closed, the movable part 40 disposed at the second position comes into contact with the detecting device 35. When the movable unit 40 contacts the detecting device 35, the switch 39 operates.

The releasing portion 47 is for releasing the holding function of the holding portion 42. [ When the maintenance worker performs a predetermined operation (second operation) from the landing station 2 to the release unit 47, the movable unit 40 disposed at the second position is returned to its original position (i.e., ).

Hereinafter, the specific configuration and functions of the operating device 36 will be described with reference to Figs. 5 and 6. Fig.

5 is a front view showing an operating device of a safety device of an elevator according to Embodiment 1 of the present invention. 6 is a plan view showing an operating device of a safety device of an elevator according to Embodiment 1 of the present invention.

The movable portion 40 is provided on the back surface of the door panel 11 so as to be movable in the opening direction and the closing direction with respect to the landing door 10, for example. 5 and 6 show a state in which the movable portion 40 is disposed at the retracted position (first position) where it does not protrude from the end face of the landing door 10 (door panel 11). Reference numeral 43 denotes protrusions provided on the movable portion 40, and numeral 44 denotes a fixing member provided on the landing door 10. When the movable portion 40 moves in the closing direction with respect to the landing door 10 from the retracted position, the movement stops when the projection 43 comes in contact with the fixed member 44. [ When the projection 43 comes into contact with the fixing member 44, the movable portion 40 is moved to the protruding position where the one end portion protrudes from the end face of the landing door 10 (toward the door stopper portion 38) .

The holding portion 42 is made of, for example, a spring that presses the other end of the movable portion 40 in the closing direction of the landing door 10. In the landing door 10, a claw 45 is provided. The movable portion 40 is normally held at the retracted position even when the retracted portion 46 of the other end portion is caught by the claw 45 and thus receives the force from the retention portion 42. [

The mechanism section 41 is, for example, formed of an L-shaped rod-like member whose one end portion moves up and down. The other end of the mechanism section (41) is fixed to a member forming a hole for the key (37). 5 shows a case in which the landing door 10 can be unlocked by turning the key 37 inserted into the hole of the landing door 10 in the direction A. [

The mechanical section 41 rotates in the same direction as the key 37 when the key 37 inserted into the hole of the landing door 10 rotates in a predetermined direction (A direction in Fig. 5). When the mechanism portion 41 rotates in the direction A, one end of the mechanism portion 41 moves downward, and the claw portion 46 is detached from the claw 45. When the claw portion 46 is detached from the claw 45, the movable portion 40 is pushed by the holding portion 42 to move in the closing direction and is disposed at the protruding position. The holding portion 42 presses the movable portion 40 in the closing direction even after the movable portion 40 is disposed at the protruding position. Therefore, the movable portion 40 is disposed at the protruding position even after the external force is not applied.

The release portion 47 includes, for example, a release bar 48, an opening 49, and a cover 50. [

The release rod 48 is provided in the movable portion 40. The release rod 48 is displaced together with the movable portion 40. The release rod 48 is disposed so as to extend upward from the movable portion 40.

The opening 49 is formed by a slot formed in the landing door 10. [ The opening 49 is disposed in the longitudinal direction in the moving direction of the movable portion 40. In the present embodiment, the longitudinal direction of the opening 49 is arranged in the opening and closing direction of the landing door 10. The opening 49 is formed in the landing door 10 in accordance with the position of the upper end of the releasing rod 48. The movable portion 40 partially faces the opening 49 while the movable portion 40 moves from the retracted position to the projected position. The cover (50) is provided on the landing door (10). The cover 50 is disposed so as to cover the opening 49 and the upper end of the operating rod 48 from the hoistway 1 side.

The elevator repair source inserts a special tool (not shown) into the opening 49 from the platform 2 side when returning the movable portion 40 disposed at the second position to the first position. The maintenance worker moves the releasing rod 48 in the opening direction with respect to the landing door 10 by a special tool, and attaches the claw portion 46 to the claw 45. Thereby, the movable portion 40 can be returned to its original position.

The operation of releasing the holding function of the holding portion 42 can not be performed from the side of the hoistway 1 and can be performed only from the side of the platform 2 because the cover 50 is provided in the releasing portion 47. [ none. That is, when the holding function of the holding portion 42 is released, the maintenance source must be in the landing 2. Thus, the safety of the repair source is secured.

7 is a diagram showing a circuit configuration of a safety device for an elevator according to the first embodiment of the present invention. As described above, the landing door device (detecting device 35) is provided on each floor floor where the car 3 is stopped. Reference numeral 39-1 in Fig. 7 is a normally closed contact of the switch 39 provided in the landing platform 2 in the first floor. Reference numeral 39-2 denotes a normally-closed contact of the switch 39 provided in the platform 2 on the second floor. Reference numeral 39-N denotes a normally-closed contact of the switch 39 provided in the landing area 2 of the N-layer.

A switch 39 (contact point) provided in each layer is connected in series to the control device 7. [ That is, the switch 39 (the contact 39-1 of the first layer), the switch 39 (the contact 39-2 of the second layer), the switch 39 (the contact 39-N ) Are connected in series to the control device 7. [

A predetermined signal is received by the control unit 7 if the movable unit 40 does not contact the detecting unit 35 (that is, the switch 39 is not operating).

When the unlocking operation is performed in a certain landing door apparatus, the movable unit 40 of the landing door apparatus is disposed at the second position. Therefore, when the landing door 10 of the landing platform 2 is closed, the movable section 40 is brought into contact with the detecting device 35. When the movable portion 40 makes contact with the detecting device 35, the switch 39 operates and the corresponding contact is opened. The control device 7 detects that the maintenance source has entered the hoistway 1 when the input signal becomes 0V. When the control device 7 detects the entry of the maintenance source into the hoistway 1, the control device 7 operates in the maintenance mode.

With the safety device having the above-described configuration, it is possible to reliably detect that the maintenance worker unhooks the landing door 10 even when the power supply is cut off or the like. That is, when the maintenance worker performs the unlocking operation on the unlocking device 34, the movable portion 40 protrudes from the end face of the door panel 11, and the state thereof is maintained. This state does not change even if the power supply is interrupted, so that accurate detection can be performed even after the power supply is restored. While the maintenance source remains in the hoistway 1, the operation in the maintenance mode can be continued.

The detecting device (35) is provided on the fixed body of the hoistway (1). Therefore, it is not necessary to perform wiring in the moving part (that is, the landing door 10), and there is no fear of disconnection.

The movable portion 40 of the operating device 36 is provided on the door panel 11 and moves in the opening and closing direction of the landing door 10. [ Further, the detecting device 35 is provided in the door stopper portion 38. Therefore, the operating device 36 can be disposed at a position close to the unlocking device 34 (the insertion portion of the key 37 of). Malfunction or malfunction of the operating device 36 can be reduced. In addition, the operating device 36 can be realized with a simple configuration.

In the present embodiment, a case has been described in which a dedicated tool is inserted into the opening 49 and operated to return the movable portion 40 to the first position. As another method, it is conceivable to insert and operate a special tool between the landing door 10 and the door stopper portion 38, for example. In this case, it is not necessary to form the opening 49 in the landing door 10.

Embodiment 2 Fig.

8 is a front view showing an operating device of a safety device of an elevator according to a second embodiment of the present invention. 9 is a plan view showing an operating device of a safety device of an elevator according to a second embodiment of the present invention.

The safety device in the present embodiment differs from that disclosed in the first embodiment in the configuration of the operating device 36. [ In the first embodiment, the case where the holding function of the holding portion 42 is released by using a special tool different from the key 37 has been described. In this embodiment, a case of releasing the holding function of the holding unit 42 by using the key 37 will be described.

The release portion 47 of the operating device 36 includes, for example, release rods 48 and 51 and a cover 50. [

The release rod 51 is formed of, for example, an L-shaped rod-shaped member. The release rod 51 is provided so as to be movable in the opening direction and the closing direction with respect to the landing door 10. [ One end of the releasing rod 51 is disposed on the side of the door stopper portion 38 of the releasing rod 48. The other end of the release rod 51 is connected to the mechanism portion 41 through the shaft 51a and the long hole 41a.

In the safety device having the above configuration, when the key 37 inserted into the hole of the landing door 10 is rotated in a predetermined direction (direction A in Fig. 8), the mechanical part 41 moves in the same direction as the key 37 . When the mechanism portion 41 rotates in the direction A, one end of the mechanism portion 41 moves downward, and the claw portion 46 is detached from the claw 45. When the claw portion 46 is detached from the claw 45, the movable portion 40 is pushed by the holding portion 42 and moves in the closing direction, and is disposed at the protruding position. The holding portion 42 presses the movable portion 40 in the closing direction even after the movable portion 40 is disposed at the protruding position. Therefore, the movable portion 40 is disposed at the protruding position even after the external force is not applied.

When the movable part 40 disposed at the protruding position is returned to the retracted position, the maintenance source of the elevator rotates the key 37 in the direction opposite to the direction of the release operation (direction B in Fig. 8) . When the key 37 rotates in the B direction, the mechanical section 41 rotates in the same direction as the key 37. [ When the mechanical section 41 rotates in the direction B, the release rod 51 moves in the opening direction with respect to the landing door 10. [ When the releasing rod 51 moves slightly in the opening direction, one end of the releasing rod 51 comes into contact with the releasing rod 48. By further moving the releasing rod 51 in the opening direction, the releasing rod 48 is pushed by the releasing rod 51, and the movable portion 40 is moved in the opening direction. The claw portion 46 is caught by the claw 45 and the movable portion 40 is disposed at the first position by rotating the key 37 to the predetermined position in the B direction.

In the safety device having the above configuration, the elevator maintenance source can perform both the unlocking operation for the unlocking device 34 and the unlocking operation for the holding function of the unlocking device 34 by the key 37 have. Therefore, the workability can be improved.

When the unlocking operation (first operation) for the unlocking device 34 is different from the operation according to the present embodiment, the movable portion 40 disposed at the second position is moved in the opposite direction (reverse direction) May be arranged at the first position.

The rest of the configuration is the same as the configuration disclosed in the first embodiment.

Embodiment 3:

10 is a diagram showing a circuit configuration of a safety device for an elevator according to a third embodiment of the present invention.

Reference numeral 39-11 in Fig. 10 is a normally open contact of the switch 39 provided in the landing platform 2 in the first floor. Reference numeral 39-21 denotes an upper contact point of the switch 39 provided in the platform 2 on the second floor. Reference numeral 39-N1 is an upper contact point of the switch 39 provided in the landing area 2 of the N layer.

The switch 39 (contact point) provided in each layer is connected to the controller 7 in parallel. That is, the switch 39 (the contact 39-11 of the first layer), the switch 39 (the contact 39-21 of the second layer), the switch 39 (the contact 39-N1 ) Are connected to the control device 7 in parallel.

A relay 52 is connected in series to (a contact point of) a switch 39 provided in each layer. The relay 52-1 is connected in series to the switch 39 (the contact 39-11 of the first layer). The relay 52-2 is connected in series to the switch 39 (the contact 39-21 of the two layers). The relay 52-N is connected in series to the N-layer switch 39 (contact 39-N1).

Reference numeral 52-11 in Fig. 10 is a relay contact of the relay 52-1. Reference numeral 52-21 is a relay contact of the relay 52-2. Reference numeral 52-N1 denotes a relay contact of the relay 52-N. Relay contacts 52-11, 52-21, ... , 52-N1 are connected in series to the control device 7. [

All the relay contacts are closed and the control device 7 is supplied with a predetermined signal (for example, when the switch 39 is not in operation) in all of the landing door devices, if the movable part 40 does not contact the detecting device 35 Is accepted.

When the unlocking operation is performed in a certain landing door apparatus, the movable unit 40 of the landing door apparatus is disposed at the second position. Therefore, when the landing door 10 of the landing platform 2 is closed, the movable section 40 is brought into contact with the detecting device 35. When the movable portion 40 contacts the detecting device 35, the switch 39 is operated and the contact of the switch 39 is closed. As a result, the corresponding relay 52 operates and the relay contact opens. The control device 7 detects that the maintenance source has entered the hoistway 1 when the input signal becomes 0V. When the control device 7 detects the entry of a repair source into the hoistway 1, the control device 7 operates in the maintenance mode.

When the movable unit 40 is not in contact with the detecting device 35, the contact of the switch 39 can be kept in the " open " state. For this reason, various switches can be used as the switch 39.

The rest of the configuration is the same as the configuration disclosed in the first or second embodiment.

Embodiment 4.

11 is a diagram showing a configuration of a safety device of an elevator according to Embodiment 4 of the present invention. The safety device in the present embodiment is different from that disclosed in Embodiments 1 to 3 in the configuration of the detecting device 35 and the operating device 36. [

The detecting device (35) is provided with an electric switch (53). The switch 53 is provided on the mounting plate 20. The switch 53 is disposed at a position close to the door hanger 12 when the landing door 10 is closed.

The actuating device 36 includes, for example, a movable portion 54, a mechanical portion 55, a holding portion 56, and a releasing portion (not shown in Fig. 11).

The movable portion 54 is provided on the door hanger 12 so as to be movable in the opening direction and the closing direction with respect to the landing door 10, for example. 11 shows a state in which the movable portion 54 is disposed at the retracted position (first position). In this embodiment, the pull-in position is a position at which the movable portion 54 does not protrude from the end face of the door hanger 12 facing the mounting plate 20. The movable portion 54 moves from the retracted position to the door hanger 12 in the closing direction so that one end portion of the movable hanger portion 54 protrudes from the end face of the door hanger 12 (toward the mounting plate 20) Second position).

The holding portion 56 is made of, for example, a spring that presses the other end of the movable portion 54 in the closing direction of the landing door 10.

The mechanism portion 55 is displaced downward when the unlocking operation (first operation) is performed on the unlocking device 34. [ When the mechanism portion 55 moves downward, the movable portion 54 is pushed by the holding portion 56 to move in the closing direction, and is disposed at the protruding position. The movable portion 54 is disposed at the protruding position even after the external force is not applied.

If the safety device has the above-described configuration, most of the operating device 36 can be disposed on the door hanger 12. The operating device 36 can be provided without damaging the design of the landing door 10 even when a part of the door panel 11 is provided with a glass.

If the safety device is constructed as described above, it can be applied to the landing door 10 of both openings.

The rest of the configuration is the same as the configuration disclosed in any of Embodiments 1 to 3.

Embodiment 5:

12 is a diagram showing the configuration of a safety device for an elevator according to Embodiment 5 of the present invention. The safety device in the present embodiment is different from that disclosed in Embodiments 1 to 4 in the configuration of the detecting device 35 and the operating device 36. [

The actuating device 36 includes, for example, a movable portion 57, a mechanical portion 58, a holding portion 59, and a releasing portion (not shown in FIG. 12).

The movable portion 57 is provided on the back surface of the door panel 11 so as to be movable in the up and down direction, for example. The movable portion 57 is disposed on one side of the door panel 11. The movable portion 57 is disposed in a portion of the door panel 11 where the door hanger 12 is not disposed.

In Fig. 12, the state in which the movable portion 57 is disposed at the retracted position (first position) is indicated by a solid line. In this embodiment, the pull-in position is a position at which the movable portion 57 does not protrude from the upper end face (upper portion) of the door panel 11. The movable part 57 moves from the retracted position to the upper position and is disposed at the protruding position (second position) where the upper end protrudes (upward) from the upper end surface of the door panel 11. [ In Fig. 12, the dashed line indicates the state in which the movable portion 57 is disposed at the protruding position (second position).

The holding portion 59 is made of, for example, a spring that presses the lower end of the movable portion 57 upward.

The mechanism portion 58 moves away from the movable portion 57 when the unlocking operation (first operation) is performed on the unlocking device 34. [ When the mechanism portion 58 is detached from the movable portion 57, the movable portion 57 is pushed by the holding portion 59 to move upward and is disposed at the protruding position. The movable portion 57 is disposed at the protruding position even after the external force is not applied.

The detecting device 35 is provided with an electric switch 60 and a cam 61.

The switch 60 is provided on the mounting plate 20. The switch 60 is disposed, for example, inside the landing door device (hanger case 14).

The cam 61 is for operating the switch 60, if necessary. The cam 61 is provided on the mounting plate 20. The cam 61 is disposed above the landing door 10 (door panel 11) when the landing door 10 is closed. Specifically, the cam 61 is disposed directly above the movable portion 57 when the landing door 10 is closed. When the movable portion 57 is disposed at the second position, when the landing door 10 is closed, the upper end of the movable portion 57 pushes up the roller of the cam 61. [ With this operation, the cam 61 contacts the switch 60, and the switch 60 operates.

With the safety device having the above-described configuration, the detecting device 35 can be disposed on the mounting plate 20, and can be applied to the landing door 10 of the both opening type.

Since the detecting device 35 includes the cam 61, the switch 60 can be disposed inside the landing door device. The mounting and wiring of the switch 60 are facilitated.

The rest of the configuration is the same as the configuration disclosed in any of the first to fourth embodiments.

[Industrial Availability]

The safety device for an elevator according to the present invention can be applied to an elevator equipped with a unlocking device in a landing door device.

1: hoistway 2: platform
3: Elevator car 4: Balance
5: Main rope 6: Traction machine
7: Control device 8, 33: Plate
9: Implantation detection device 10: Landing door
11, 26: door panel 12, 27: door hanger
13, 28: door rail 14, 29: hanger case
15, 30: Door roller 16: Locking device
17: Fixing piece 18: Latch
18a: protrusion 19: detection switch
20: mounting plate 21, 51a:
22: Elevator door 23: Interlocking device
24: roller 25: arm
31: motor 32: conversion means
34: detaching device 35: detecting device
36: actuating device 37: key
38: door stopper portion 39, 53, 60: switch
39-1, 39-2, ... , 39-N, 39-11, 39-21, ... , 39-N1: contact point
40, 54, 57: moving parts 41, 55, 58:
41a: long holes 42, 56, 59:
43: projection 44: fixing member
45: Chuck 46: Clove
47: release part 48, 51: release rod
49: opening 50: cover
52-1, 52-2, ... , 52-N relay
52-11, 52-21, ... , 52-N1: Relay contact
61: cam

Claims (11)

  1. A platform door provided at a platform of the elevator and opening and closing the platform entrance,
    A locking device that unlocks the lift door by opening the elevator car door when the elevator car of the elevator stops at the landing platform,
    A unlocking device for unlocking the locking device by performing a predetermined first operation from the landing platform,
    A detecting device provided on a fixed body of the hoistway and having a switch,
    And an operating device provided on the landing door,
    The operating device includes:
    A movable portion displaced to a predetermined first position and a second position,
    A mechanism section for disposing the movable section at a second position by performing a first operation with respect to the unsealing apparatus,
    And a holding portion for holding the movable portion in the second position,
    And the movable portion is in contact with the detecting device when the landing door is closed when the movable portion is disposed at the second position, thereby operating the switch.
  2. The method according to claim 1,
    The detecting device may be provided in a door stopper portion where the end surface of the landing door approaches when the landing door is closed,
    And the movable portion protrudes from the end face of the landing door when the movable portion is disposed at the second position.
  3. The method of claim 2,
    Wherein,
    And when it is disposed at the first position, it does not protrude from the end face of the landing door,
    Wherein the elevator door moves in the closing direction of the landing door from the first position and is disposed at the second position.
  4. The method according to claim 1,
    Wherein the movable portion moves upward from the first position and is disposed at the second position,
    Wherein the detection device is disposed at an upper portion of the landing door when the landing door is closed.
  5. The method according to claim 1,
    The landing door includes:
    A door panel for blocking a platform entrance,
    A door hanger provided on an upper portion of the door panel for hanging the door panel,
    Wherein the movable portion is provided on the door hanger and moves in the closing direction of the landing door from the first position and is disposed in the second position.
  6. The method according to any one of claims 1 to 5,
    The detecting device includes:
    And a cam which is brought into contact with the movable portion disposed at the second position when the landing door is closed,
    Wherein the switch is operated by the movable portion disposed at the second position contacting the cam.
  7. The method according to any one of claims 1 to 6,
    And a control device for controlling the operation of the elevator,
    Wherein the detecting device is disposed on a plurality of landing platforms in which the elevator car stops,
    Wherein the switches of the plurality of detection devices are connected in series to the control device.
  8. The method according to any one of claims 1 to 6,
    And a control device for controlling the operation of the elevator,
    Wherein the detecting device is disposed on a plurality of landing platforms in which the elevator car stops,
    Wherein the switches of the plurality of detection devices are each connected in series to a relay,
    And the contacts of the plurality of relays are connected in series to the control device.
  9. The method according to any one of claims 1 to 8,
    The operating device includes:
    And a releasing portion that moves the movable portion disposed at the second position to the first position by performing a predetermined second operation from the landing position.
  10. The method according to any one of claims 1 to 8,
    The operating device includes:
    And a disengagement portion for disposing the movable portion disposed at the second position in the first position by performing an operation opposite to the first operation with respect to the unlocking device.
  11. The method according to claim 9 or 10,
    And the releasing portion is not operable from the hoistway side of the landing door.

KR1020147028462A 2012-03-22 2012-03-22 Safety device for elevator KR101624825B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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JP (1) JP5743023B2 (en)
KR (1) KR101624825B1 (en)
CN (1) CN104203795B (en)
DE (1) DE112012006072T5 (en)
WO (1) WO2013140575A1 (en)

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Publication number Priority date Publication date Assignee Title
CN104944263A (en) * 2015-07-06 2015-09-30 宁波欧菱电梯配件有限公司 Elevator landing door with door plate interlocking device
US20180265334A1 (en) * 2015-08-04 2018-09-20 Otis Elevator Company Elevator car door interlock
EP3423391A1 (en) * 2016-03-04 2019-01-09 Otis Elevator Company Elevator system landing door unlocking mechanism
CN107473061B (en) 2016-06-08 2020-10-16 奥的斯电梯公司 Maintenance safety device for elevator system and operation method thereof
JP6465248B2 (en) * 2016-10-27 2019-02-06 三菱電機株式会社 Elevator landing door open detection device and elevator
EP3418238B1 (en) * 2017-06-22 2020-07-08 Otis Elevator Company Elevator lintel door lock safety devices
US20190031468A1 (en) * 2017-07-31 2019-01-31 Otis Elevator Company Mechanical hoistway access control device
US10526172B2 (en) * 2017-09-29 2020-01-07 Otis Elevator Company Mechanical hoistway access control device

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JPH07309567A (en) * 1994-05-20 1995-11-28 Otis Elevator Co Lock release device for elevator door on entrance side
JP4553724B2 (en) * 2004-12-27 2010-09-29 三菱電機株式会社 Elevator door manual unlocking device
ES2603829T3 (en) * 2006-09-28 2017-03-01 Inventio Ag Procedure for the modernization of an elevator door system of an elevator installation and modernization kit for carrying out the procedure
FR2947254B1 (en) * 2009-06-25 2015-03-13 D R I M Ets Improvement to a safety device for an elevator door
JP2015006940A (en) 2013-06-25 2015-01-15 京セラドキュメントソリューションズ株式会社 Image formation device

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JP5743023B2 (en) 2015-07-01
CN104203795A (en) 2014-12-10
WO2013140575A1 (en) 2013-09-26
DE112012006072T5 (en) 2014-12-04
CN104203795B (en) 2016-01-20
JPWO2013140575A1 (en) 2015-08-03

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