JP2011063384A - Elevator door engaging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase a meshing margin at the engagement of engaging vanes and engaging rollers, in an elevator door engaging device. <P>SOLUTION: The engaging vanes 12 and 13 are installed in a car door 11, and extend in the vertical direction at an interval, and constitute a parallel link together with links 14 and 15. The engaging rollers 18 and 21 are installed in a landing door, and nipped between the engaging vanes 12 and 13 when a car lands on a landing hall. The engaging vanes 12 and 13 push the engaging rollers 18 and 21 according to the opening/closing of the car door 11, and drive the opening/closing of the landing door. The links 14 and 15 and the engaging vanes 12 and 13 move toward the landing hall side according to the rotational movement of the links 14 and 15 by a ball screw. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an elevator door engagement device that engages a car door and a landing door when the elevator car is landed to transmit an opening / closing driving force of the car door to the landing door.

  In the elevator platform of the building, an entrance for getting on and off the elevator car is provided, and a sliding door is installed at the entrance. This landing door is normally closed, and when a car that moves up and down in the hoistway reaches the elevator landing and stops, it receives a driving force from the car door of the car and opens and closes. Further, the landing door is provided with a lock mechanism, which is locked when the landing door is closed and unlocked when the door opening operation is started.

  An engagement device is provided between the car door and the landing door for transmitting the driving force of the car door to the landing door and for operating the lock mechanism. This engagement device includes a pair of engagement vanes that are supported by a parallel link mechanism provided on the car door and extend in the vertical direction so as to change the interval width while maintaining parallelism.

  The lock mechanism includes two engagement rollers as engagement elements attached to the landing door to operate a lock lever that locks the landing door, and the two engagement rollers are the pair of engagement vanes. The car door and the landing door are engaged with each other by interposing between them and the engagement rollers are sandwiched by the pair of engagement vanes, and the car door and the landing door are moved in conjunction with each other. In addition, the lock lever is operated by releasing the scissors to lock the landing door.

  When the landing door is closed and the operation of the landing door locking mechanism is completed, the gap between the pair of engagement vanes is widened to create a gap between the engagement rollers, and the elevator can be raised and lowered. In addition, the collision between the engagement vane and the engagement roller during the raising / lowering can be avoided.

  Many engagement devices have been proposed so far. For example, a cam roller attached to one of a pair of engagement vanes supported via a parallel link mechanism is guided along a cam plate provided at an upper portion of the car door as the car door is closed. By moving up or down along the cam plate just before the landing door is closed, the distance between the pair of engagement vanes changes, and the lock mechanism is activated or the car door and the landing door are engaged. There is something to cancel.

  When each door is closed, the doors must be disengaged in order to allow the car to move up and down. For this reason, the cam mechanism with the cam roller and the cam plate as described above immediately before the door is closed. A clearance is provided between the engagement vane and the engagement roller to release the engagement of both doors (see Patent Document 1 and Patent Document 2).

Japanese Patent Laid-Open No. 2006-290656 JP 2007-176630 A

  In recent elevators, there is a tendency to create a clearance (running clearance) between the passenger car and the hoistway, which necessitates a small amount of engagement between the engagement vane and the engagement roller. On the other hand, there is a possibility that force is applied in a direction in which the allowance is further reduced due to an unbalanced load of the car or a collision with the door panel. Therefore, there is a possibility that the engagement of the engagement vane and the engagement roller is disengaged.

  Therefore, the technique disclosed in Patent Document 2 includes a displacement mechanism that causes the engagement vanes to protrude toward the landing side as the car door moves from the closed position to the open position. However, the technique disclosed in Patent Document 2 has a complicated structure.

  The present invention has been made in view of such circumstances, and is an elevator that engages a car door and a landing door when the elevator car lands and transmits the opening / closing driving force of the car door to the landing door. An object of the door device is to increase an engagement margin at the time of engagement between an engagement vane and an engagement roller with a simple structure.

  In order to achieve the above object, an elevator door engaging device according to the present invention is configured such that when a car that moves up and down in a hoistway is landing on a landing, the door of the landing door is moved according to a sliding opening / closing operation of the car door. An elevator door engaging device for engaging a landing door and a car door to perform a sliding opening / closing operation, and is installed at a position facing the landing of the car door, and is horizontal to each other along the surface of the car door. Two engagement vanes configured to extend in the vertical direction with an interval in the direction and change each other according to the opening / closing operation of the car door, and each of the two engagement vanes can be rotated. The upper link and the lower link, which are parallel to each other and constitute a parallel link with the two engagement vanes, are attached to a position facing the platform of the car door. The upper link shaft and the lower link shaft constituting the pivot center of each of the lower and lower links, and the landing door are mounted at positions facing the hoistway of the landing door, and the car is landing on the landing Sometimes, the engagement is arranged so as to be sandwiched between the two engagement vanes, and is driven by the engagement vanes to open and close the landing door according to the opening / closing operation of the car door. A roller, and the upper link shaft and the lower link shaft constitute a ball screw, and the upper link and the lower link and the two engagement vanes are placed by rotating the upper link and the lower link. It is comprised so that it may move to an axial direction toward the side.

  In addition, another elevator door engaging device according to the present invention performs a sliding door opening / closing operation according to a sliding opening / closing operation of the car door when the car moving up and down in the hoistway is landing on the landing. An elevator door engaging device for engaging a landing door and a car door to be installed, which is mounted at a position facing the landing of the car door and spaced horizontally along the surface of the car door. Two engagement vanes configured to open and extend in the vertical direction so that the distance between them changes according to the opening / closing operation of the car door, and mounted at a position facing the hoistway of the landing door, When the car is landing on the landing, it is arranged so as to be sandwiched between the two engagement vanes, and is pushed by the engagement vanes according to the opening / closing operation of the car door. in front At least one engagement roller for opening and closing the landing door, and when the engagement vane and the engagement roller are engaged to open and close the landing door according to the opening and closing operation of the car door Further, at least one of the engagement rollers is configured to move in the axial direction toward the hoistway side.

  According to the present invention, an elevator door device that engages a car door and a landing door when the elevator car is landed and transmits the opening / closing driving force of the car door to the landing door has a simple structure, and thus has a simple structure. Engagement allowance at the time of engagement between the mating vane and the engagement roller can be increased to prevent disengagement.

It is the fragmentary front view which looked at the principal part of 1st Embodiment of the elevator door engaging apparatus which concerns on this invention from the landing side, Comprising: It is a figure which shows the state which the car is landing and the door is closed. . It is an II-II arrow plane sectional view of FIG. FIG. 3 is an enlarged plan sectional view showing only a portion on the car side in FIG. 2. It is the partial front view which looked at the state in the middle of opening the door of the elevator door engaging apparatus of FIG. 1 from the landing side. It is a fragmentary perspective view which shows the principal part of 2nd Embodiment of the elevator door engaging apparatus which concerns on this invention.

  Hereinafter, embodiments of an elevator door engaging device according to the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a partial front view of an essential part of a first embodiment of an elevator door engaging device according to the present invention as seen from a landing side, where a car is landing and a door is closed. It is a figure which shows a mode that it looked toward the platform from the inner side of a passenger car. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is an enlarged plan sectional view showing only the portion on the car side in FIG. FIG. 4 is a partial front view of a state in the middle of opening the door of the elevator door engaging device of FIG. 1 as viewed from the landing side.

  This elevator door engaging device is a device for engaging and disconnecting a car door 11 that slides left and right and a landing door (not shown) that is driven by the car door 11 and slides left and right. .

  Two engagement vanes 12 and 13 extending in the vertical direction are arranged on the car door 11 in parallel along the surface of the car door 11, and the upper portions of these engagement vanes 12 and 13 can be rotated with each other. An upper link 14 connected to the lower end of the engagement vanes 12 and 13 and a lower link 15 connecting the lower portions of the engagement vanes 12 and 13 to each other so as to be rotatable are arranged to form a parallel link. The two engagement vanes 12 and 13 are arranged so as to protrude toward the landing. At the center of each of the upper link 14 and the lower link 15, there are rotary shafts 16 and 17 fixed to the car door 11 and perpendicular to the surface of the car door 11, and the upper link 14 and the lower link 15 are respectively The rotation shafts 16 and 17 can be rotated.

  The two engagement vanes 12 and 13 have different weights, and in the example shown in the figure, the left engagement vane 12 is heavier than the right engagement vane 13, and due to the difference in weight, the left engagement vanes 12 are different. The combined vane 12 is configured so that a lowering force is applied, that is, a counterclockwise moment is applied to the upper link 14 and the lower link 15. The upper link 14 and the lower link 15 are lowered to the right as shown in FIGS. 1 and 4, and the upper link 14 and the lower link 15 in the counterclockwise direction due to the difference in weight of the engagement vanes 12 and 13. In response to the moment, the engagement vanes 12 and 13 are urged in the direction in which the distance between them is increased. However, the engagement vane 12 on the left side is not lowered by a stopper (not shown) than in the state of FIG. That is, FIG. 1 shows a state in which the distance between the engagement vanes 12 and 13 is the largest.

  A roller 25 is attached to the upper left side of the left engagement vane 12. A cam plate 26 that extends horizontally along the car door 11 and engages with the roller 25 is fixed to the upper part of the car. Near the right end of the cam plate 26, an inclined portion 27 that descends toward the right end is formed. In the state of FIG. 1, the roller 25 is directly above the inclined portion 27 of the cam plate 26.

  On the other hand, the first engagement roller 18 is disposed at the landing door so as to protrude toward the car side, that is, the hoistway side. The engagement piece 19 is rotatable around the axis of the first engagement roller 18, and an engagement claw 20 is formed at the tip. Further, a second engagement roller 21 is attached to the engagement piece 19. A hook 22 is fixed on the landing side. In the state shown in FIG. 1, the engaging claw 20 is engaged with the hook 22, and the landing door is held in a closed state. Further, the first engagement roller 18 and the second engagement roller 21 are disposed so as to be sandwiched between the left and right engagement vanes 12 and 13 when the car is landed.

  Next, when the car door 11 starts to open to the left from the state of FIG. 1, the roller 25 is pushed up by the upper surface of the inclined portion 27 of the cam plate 26, thereby pushing up the left engagement vane 12 and the upper link 14. And the lower link 15 rotates clockwise. Thereby, the interval between the left and right engagement vanes 12 and 13 is fitted. As a result, the second engagement roller 21 is pushed to the left, the engagement piece 19 rotates counterclockwise, and the engagement claw 20 and the hook 22 are disengaged. This state is shown in FIG.

  Further, when the car door 11 moves to the left, the first engagement roller 18 and the second engagement roller 21 are pushed to the left by the right engagement vane 13 to open the landing door to the left.

  In this embodiment, when the upper link 14 and the lower link 15 rotate around the rotation shafts 16 and 17 and are displaced from the state of FIG. 1 toward the state of FIG. 4, the upper link 14 and the lower link 15. Is configured to move in the axial direction toward the landing side. For example, the ball screw shaft 30 is fixed to the center of the upper link 14, and the ball screw shaft 30 is screwed into a ball screw hole fixed to the car door 11. Thereby, the upper link 14 moves toward the landing side when rotating from the state of FIG. 1 toward the state of FIG. 4. Similarly to the upper link 14, the lower link 15 moves toward the landing when rotating from the state of FIG. 1 toward the state of FIG. 4.

  Further, as the upper link 14 and the lower link 15 move toward the landing side, the engagement vanes 12 and 13 also move toward the landing side. For this reason, it is possible to prevent the engagement vanes 12 and 13 from engaging with the first and second engagement rollers 18 and 21 so that the engagement is disengaged halfway.

  Further, the ball screws can be adjusted so that the left and right engagement vanes 12 and 13 are parallel and extend vertically with the upper link 14 and the lower link 15 protruding, and the left and right engagement vanes 12 and 13 The postures of the left and right engagement vanes 12 and 13 and the positional relationship with each other can be adjusted so that the engagement with the first and second engagement rollers 18 and 21 is ensured.

[Second Embodiment]
Next, a second embodiment of the elevator door engaging device according to the present invention will be described with reference to FIG. Here, parts common to the first embodiment are denoted by common reference numerals, and redundant description is omitted. FIG. 5 is a partial perspective view illustrating a main part of the elevator door engaging device according to the second embodiment.

  In the first embodiment described above, when the upper link 14 and the lower link 15 attached to the car door 11 rotate around the rotation shafts 16, 17, the upper link 14 and the lower link 15 are moved to the landing side. It is configured to advance and retract in the axial direction toward or in the opposite direction. On the other hand, in the second embodiment, the upper link 14 and the lower link 15 do not advance and retract in the axial direction, and conversely, at least one of the first and second engaging rollers 18 and 21 attached to the landing door. It moves forward and backward toward the car door 11 or vice versa.

  In the example shown in FIG. 5, the rotation shaft on which the first engagement roller 18 rotates is the ball screw shaft 40, which corresponds to the case where the state of FIG. 1 in the first embodiment is changed to the state of FIG. 4. When the first engagement rotor 18 is rotated, the first engagement rotor 18 advances in the axial direction toward the car door 11 by the rotation. Thereby, the engagement depth of the 1st engagement rotor 18 and the left and right engagement vanes 12 and 13 becomes deep, and the malfunction that engagement disengages on the way can be prevented.

  At this time, in the example shown in FIG. 5, the engagement piece 19 and the second engagement rotor 21 do not advance and retreat in the axial direction, and therefore the engagement piece 19 attached to the landing door and the hook 22 fixed to the landing. The positional relationship between the two is not changed.

[Other Embodiments]
Each embodiment described above is merely an example, and the present invention is not limited thereto.

  For example, in the second embodiment, the engagement piece 19 and the second engagement rotor 21 do not advance and retract in the axial direction when the first engagement rotor 18 rotates and advances and retracts in the axial direction. When the first engagement rotor 18 rotates and advances and retracts in the axial direction, the engagement piece 19 and the second engagement rotor 21 may also advance and retract in the axial direction together with the first engagement rotor 18. it can. In that case, not only the first engagement rotor 18 but also the second engagement rotor 21 has a deep engagement depth with the left and right engagement vanes 12 and 13. In this case, the axial positional relationship between the engagement piece 19 and the hook 22 changes, but there is no problem if an axial engagement margin is provided.

DESCRIPTION OF SYMBOLS 11 ... Car door 12, 13 ... Engagement vane 14 ... Upper link 15 ... Lower link 16, 17 ... Rotating shaft (link shaft)
DESCRIPTION OF SYMBOLS 18 ... 1st engagement roller 19 ... Engagement piece 20 ... Engagement claw 21 ... 2nd engagement roller 22 ... Hook 25 ... Roller 26 ... Cam board 27 ... Inclined part 7
30, 40 ... Ball screw shaft

Claims (7)

To engage the landing door and the car door in order to perform the sliding opening / closing operation of the landing door according to the sliding opening / closing operation of the car door when the car moving up and down in the hoistway is landing on the landing An elevator door engaging device,
Attached at a position opposite to the car door landing, it is configured to extend in the vertical direction with a horizontal interval along the surface of the car door, and the distance between them changes according to the opening / closing operation of the car door. Two engaging vanes,
An upper link and a lower link that are parallel to each other and that are rotatably engaged with the two engagement vanes to form a parallel link with the two engagement vanes,
An upper link shaft and a lower link shaft which are attached to a position facing the landing of the car door and constitute an axis serving as a rotation center of each of the upper link and the lower link;
The car is mounted at a position facing the hoistway of the landing door, and is arranged so as to be sandwiched between the two engagement vanes when the car is landing on the landing. An engagement roller that opens and closes the landing door by being pushed by the engagement vane according to the opening and closing operation of the door;
Have
The upper link shaft and the lower link shaft constitute a ball screw, and the upper link and the lower link and the two engagement vanes are axially moved toward the landing side by rotating the upper link and the lower link. An elevator door engaging device characterized by being configured to move.   2. The elevator door engaging device according to claim 1, wherein the axial positions of the upper link and the lower link in an initial state can be individually adjusted by forced rotation of each ball screw. For engaging the landing door and the car door to perform the sliding opening / closing operation of the landing door according to the sliding opening / closing operation of the car door when the car moving up and down in the hoistway is landing on the landing An elevator door engaging device,
Attached at a position opposite to the car door landing, it is configured to extend in the vertical direction with a horizontal interval along the surface of the car door, and the distance between them changes according to the opening / closing operation of the car door. Two engaging vanes,
The car is mounted at a position facing the hoistway of the landing door, and is arranged so as to be sandwiched between the two engagement vanes when the car is landing on the landing. At least one engagement roller that opens and closes the landing door by being pushed by the engagement vane according to the opening and closing operation of the door;
Have
When the engagement vane and the engagement roller are engaged to open and close the landing door according to the opening / closing operation of the car door, at least one of the engagement rollers is axially directed toward the hoistway side. An elevator door engaging device characterized by being configured to move. The engagement roller includes first and second engagement rollers,
The first engagement roller is fixed to the landing door and is rotatably arranged around a first engagement roller shaft facing the hoistway.
The engagement device is:
An engagement piece fixed to the first engagement roller and having an engagement claw;
A hook that is engageable with the engaging claw and fixed to the landing;
Further comprising
The second engagement roller is rotatable around a second engagement roller shaft fixed to the engagement piece;
The distance between the two engagement vanes with the first and second engagement rollers sandwiched between the two engagement vanes when the car is landing on the landing When the engagement piece rotates to disengage the engagement claw and the hook, the first engagement roller moves up and down as the engagement piece rotates. The elevator door engaging device according to claim 3, wherein the elevator door engaging device is configured to move in an axial direction toward a road side.   The elevator door engagement device according to claim 4, wherein the first engagement roller is configured to advance and retract in the axial direction with rotation by a ball screw mechanism.   The elevator door mechanism according to claim 5, wherein the engagement claw is configured not to move in the axial direction when the first engagement roller moves in the axial direction toward the hoistway side. Combined device.   7. The elevator door engagement according to claim 5, wherein the ball screw mechanism is configured such that an axial position of the ball screw in an initial state before movement can be adjusted by forced rotation of the ball screw. apparatus.

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