WO2008023435A1

WO2008023435A1 - Door device for elevator

Info

Publication number: WO2008023435A1
Application number: PCT/JP2006/316730
Authority: WO
Inventors: Yoshihiko Koizumi
Original assignee: Mitsubishi Electric Corporation
Priority date: 2006-08-25
Filing date: 2006-08-25
Publication date: 2008-02-28
Also published as: EP2055663A1; KR20090038463A; EP2055663A4; CN101506085B; JPWO2008023435A1; CN101506085A; KR101087322B1; JP4913145B2

Abstract

A door device for an elevator comprises a door rail provided above the gateway of the elevator, a door hanger movable along the door rail, a door panel for opening and closing the gateway of the elevator by the movement of the panel with the door hanger, and a door inclination prevention device disposed above the door rail and biasing the door hanger. The door rail is disposed along the width direction of the gateway of the elevator. The door hanger includes contact bodies placed on the door rail and a common door hanger body provided with respective contact bodies. The door inclination prevention device biases the door hanger in such a direction that the contact bodies are pressed against the door rail.

Description

Specification

Elevator door equipment

Technical field

[0001] The present invention relates to an elevator door device for opening and closing an elevator doorway.

Background art

Conventionally, an elevator door opening / closing device has been proposed in which a door machine arranged above a sliding door is brought close to the sliding door in order to prevent the sliding door from wobbling during opening / closing and reversing. Above the sliding door, a pulley that is rotated by receiving power from the electric motor is provided. The door machine consists of a link mechanism that changes the rotation of the pulley into the reciprocating motion of the sliding door. An arm that suspends the sliding door is connected to the door machine. By bringing the door machine closer to the sliding door, the length of the arm can be shortened and the sliding door can be supported stably (see Patent Document 1).

Patent Document 1: Japanese Patent Laid-Open No. 6-80361

Disclosure of the invention

Problems to be solved by the invention

[0004] However, if the acceleration / deceleration speed of the sliding door is further increased due to the high speed of the opening / closing speed, the displacement of the sliding door due to the inertial force during acceleration / deceleration can be suppressed even if the distance between the sliding door and the door machine is reduced. There is a risk that it will not be possible. Therefore, the sliding door may be tilted during acceleration / deceleration of the sliding door.

[0005] In addition, since the door machine has a link mechanism force, the structure becomes complicated. This also increases manufacturing costs.

[0006] The present invention has been made to solve the above-described problems, and can increase and decrease the opening / closing speed of the elevator entrance / exit, and the elevator door tilts when the elevator entrance / exit is opened / closed. An object of the present invention is to provide an elevator door device that can prevent this and reduce the manufacturing cost.

Means for solving the problem [0007] The elevator door device according to the present invention is provided above the elevator entrance and exits, and is placed on the doorway and the door rail that are arranged along the entrance direction of the elevator, and is spaced along the door rail. The door hanger is provided on the door hanger body and the door hanger body, which have a plurality of contact bodies arranged with each other and a common door hanger body provided with each contact body, and each contact body can move along the door rail while contacting the door rail. It is equipped with a door panel that opens and closes the elevator door by moving with the door hanger, and a door tilt prevention device that is placed above the door rail and biases the door hanger in the direction in which each contact body is pressed by the door rail! /

Brief Description of Drawings

FIG. 1 is a front view showing an elevator door device according to Embodiment 1 of the present invention.

FIG. 2 is a front view showing a door device for an elevator according to Embodiment 2 of the present invention.

FIG. 3 is a front view showing an elevator door device according to Embodiment 3 of the present invention; BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1.

FIG. 1 is a front view showing an elevator door device according to Embodiment 1 of the present invention. In the figure, a car (not shown) is provided with a car doorway (elevator doorway) 1. A hanger case 2 provided above the car doorway 1 is fixed to the car.

[0010] To the hanger case 2, a door rail (support rail) 3 disposed along the opening direction of the car doorway 1 is fixed. A pair of car doors (elevator doors) 4 and 5 that open and close the car doorway 1 are suspended from the door rail 3.

Each of the car doors 4 and 5 is movable in the direction of the frontage of the car doorway 1. Basket doorway

1 is closed when the car doors 4 and 5 come into contact with each other, and opens when the car doors 4 and 5 come off!

[0012] A car sill 6 is fixed to the lower part of the car doorway 1 along the frontage direction of the car doorway 1. In the car sill 6, a sill groove (not shown) is provided along the moving direction of each car door 4, 5. [0013] Each of the car doors 4 and 5 includes a door hanger 7 that can move along the door rail 3, and a door panel 8 that is provided at the lower part of the door hanger 7 and that opens and closes the car doorway 1 by moving together with the door hanger 7. Have.

[0014] Each door hanger 7 includes a plurality (in this example, spaced apart) along the door rail 3.

2) hanger rollers (contact bodies) 9 and a common door hanger body (hanger plate) 10 provided with the respective hanger rollers 9.

Each hanger roller 9 is placed on the door rail 3. Each hanger roller 9 is rotated while contacting the door rail 3 when the door hanger 7 is moved along the door rail 3.

Each door hanger body 10 is arranged avoiding the door rail 3. Each door hanger body 10 is provided with a plurality (two in this example) of up-thrust rollers 11 together with the respective hanger rollers 9 for preventing the hanger rollers 9 from coming off the door rail 3. Each up thrust roller 11 is disposed below the door rail 3 and is disposed at the same position as each hanger roller 9 in the direction along the door rail 3. In addition, a gap is provided between each up thrust roller 11 and the door rail 3. Further, each hanger roller 9 and each up thrust roller 11 are arranged between the hanger case 2 and the door hanger body 10.

[0017] At the lower part of each door panel 8, a plurality (two in this example) of door legs 12 to be inserted into the sill grooves of the car sill 6 are provided. The door legs 12 are spaced along the sillway.

A door driving device 13 is provided at one end of the hanger case 2 in the frontage direction. The door drive device 13 includes a door drive device body 14 including a motor, and a drive pulley 15 that is rotated by the drive force of the door drive device body 14. A follower pulley 16 is provided at the other end of the hanger case 2 in the frontage direction.

An endless belt (transmission strip) 17 is strung between the drive pulley 15 and the follower pulley 16. The belt 17 is moved around by the rotation of the drive pulley 15. The follower pulley 16 is rotated by the circular movement of the belt 17.

[0020] The car doors 4 and 5 are moved in opposite directions by the circular movement of the belt 17, Connected to the belt 17 via connecting members 18 and 19, respectively.

The hanger case 2 supports a door tilt prevention device 20 for preventing the car doors 4 and 5 from tilting. The door tilt prevention device 20 is disposed above the door rail 3. Further, the door tilt prevention device 20 biases each door hanger 7 in a direction in which each hanger roller 9 is pressed against the door rail 3.

[0022] The door tilt prevention device 20 includes a guide rail 21 arranged along the door rail 3 and a plurality of movable parts along the guide rail 21 while facing the door hanger body 10 in the upward and downward direction (in this example, Two) opposing hangers (opposed moving bodies) 22 and a plurality of hangers arranged between each opposing hanger 22 and each door hanger 7 to urge each door hanger 7 in a direction away from each opposing hanger 22, that is, downward ( In this example, there are two biasing springs (biasing bodies) 23.

The guide rail 21 is fixed to the hanger case 2. Therefore, the guide rail 21 is not displaced with respect to the door rail 3. The guide rail 21 is arranged at a predetermined interval with respect to the door rail 3. Further, the length of the guide rail 21 is substantially the same as the length of the door rail 3.

[0024] Each counter hanger 22 has a plurality of (in this example, two) guide rollers 24 arranged at intervals along the guide rail 21, and a common counter hanger body provided with each guide roller 24. (Opposing member) 25.

Each guide roller 24 is disposed below the guide rail 21. Each guide roller 24 is biased upward by a biasing spring 23. Thereby, each guide roller 24 is pressed against the guide rail 21. Each guide roller 24 rolls while contacting the guide rail 21 when the opposing hanger 22 is moved along the guide rail 21.

The opposing hanger body 25 is arranged avoiding the guide rail 21. The opposing hanger body 25 is provided with a plurality (two in this example) of detachment prevention rollers 26 for preventing the detachment of the guide rollers 24 from the guide rails 21. Each detachment prevention roller 26 is disposed above the guide rail 21 and is disposed at the same position as each guide roller 24 in the direction along the guide rail 21. In addition, a gap is provided between the prevention roller 26 and the guide rail 21. Further, each guide roller 24 and each detachment prevention roller 26 are disposed between the hanger case 2 and the opposed hanger body 25. The urging spring 23 is disposed in a contracted state between the door hanger body 10 and the opposing hanger body 25. That is, the door hanger 7 and the opposing hanger 22 are urged by the urging spring 23 in a direction away from each other. Further, the biasing spring 23 is disposed between one hanger roller 9 and the other hanger roller 9 in the direction along the door rail 3. Therefore, even if the distance between the door hanger body 10 and the opposing hanger body 25 varies with the movement of the car doors 4 and 5, the force of the urging spring 23 causes the door hanger 7 and the opposing hanger 22 force. Stagnation between the S door rail 3 and the guide rail 21 is prevented.

The opposing hanger 22 is biased in a direction in which each guide roller 24 is pressed against the guide rail 21 by receiving an elastic repulsive force (biasing force) of the biasing spring 23. Further, the door hanger 7 is biased in the direction in which each hanger roller 9 is pressed against the door rail 3 by receiving the elastic repulsive force (biasing force) of the biasing spring 23.

Next, the operation will be described. When the driving pulley 15 is rotated by the driving force of the door driving device 13, the belt 17 is rotated. As a result, the car doors 4 and 5 are moved in the opposite directions along the frontage direction of the car doorway 1. As a result, the car doorway 1 is opened and closed.

Each opposing hanger 22 is moved along the in-house rail 21 together with the car doors 4 and 5 while facing the door hanger 7. Thereby, each door hanger 7 is moved while receiving a downward biasing force by the biasing spring 23. Accordingly, each hanger roller 9 is rolled on the door rail 3 while being pressed by the door rail 3.

[0031] When the car door 4 is accelerated / decelerated when the force door 1 is opened and closed, and the inertia force due to the acceleration / deceleration is acting on the car door 4, the force door 4 receives the inertial force to Try to tilt. However, since the door hanger 7 is forcibly urged by the urging spring 23 in the direction in which each hanger roller 9 is pressed against the door rail 3, the hanger roller 9 is prevented from being separated upward from the door rail 3. As a result, the force door 4 is prevented from being inclined.

That is, a force F 1 acts downward on each hanger roller 9 provided on the car door 4 due to the weight of the car door 4. The size of gravity F1 is expressed by the following formula (1) because the number of non-rollers 9 is two when the weight of the car door 4 is W. [0033] Fl = W / 2--(l)

Further, the door hanger 7 receives a downward biasing force F2 by the biasing spring 23.

Therefore, for example, when the inertia force F3 in the door closing direction acts on the center of gravity of the car door 4 due to acceleration / deceleration of the car door 4, the contact A between the hanger roller 9 on one side (door opening side) and the door rail 3 The moment Ml is a combination of the moment due to gravity F1, the moment due to urging force F2, and the moment due to inertial force F3. Moment Ml is expressed by the following equation (2).

[0036] Ml = Fl -Ll + F2-L2-F3 -L3--(2)

[0037] However, L1 is a distance in the horizontal direction from the contact A force to the center position of the other hanger roller 9. L2 is the distance in the horizontal direction to the position of the biasing spring 23 for the contact A force. Further, L3 is the distance in the height direction from the contact A to the center of gravity of the car door 4.

[0038] In equation (2), the direction of the moment (F1.L1 + F2 • L2) due to gravity F1 and urging force F2 is the moment of inertia (F3.L3 ) Is in the direction against this.

[0039] Therefore, when moment Ml≥0, the moments due to gravity F1 and urging force F2 are more than the moments due to [^^^ Each hanger roller 9 that is not inclined with respect to the door rail 3 is never separated upward from the door rail 3.

[0040] When the moment Ml <0, the moment due to the inertial force F3 exceeds the moment due to the gravity F1 and the biasing force F2, respectively, so that the car door 4 is inclined with respect to the door rail 3, and the other The hanger roller 9 is separated from the door rail 3 upward.

[0041] Since the moment by the urging spring 23 is a moment against the moment by the inertial force F3, the urging force F2 and the distance L2 are adjusted so that the moment M1≥0. As a result, even when the force door 4 is accelerated or decelerated, the moment Ml <0 can be prevented and the force door 4 can be prevented from being inclined.

[0042] It should be noted that the bias spring 23 of the force door 5 is also adjusted in the same manner, and the car door 5 can be prevented from being inclined. [0043] In such an elevator door device, the door hanger 7 is urged by the door tilt prevention device 20 in the direction in which each hanger roller 9 is pressed against the door rail 3, so that the car doors 4, 5 are accelerated and decelerated. Sometimes the door hanger 7 can be biased in a direction that prevents the car doors 4, 5 from tilting. Therefore, even when the acceleration / deceleration of the car doors 4 and 5 is increased, it is possible to prevent the car doors 4 and 5 from being tilted by the biasing of the door tilt prevention device 20 against the door hanger 7. it can. That is, it is possible to increase the opening / closing speed of the force doorway 1 and to prevent the car doors 4 and 5 from being inclined when the car doorway 1 is opened / closed. In addition, since no link mechanism is used as in the prior art, it is possible to prevent the car doors 4 and 5 from being inclined with a simple configuration, and to reduce the manufacturing cost. .

[0044] Further, the door inclination prevention device 20 includes a guide rail 21 disposed along the door rail 3, an opposing hanger 22 that can move along the guide rail 21 while facing the door hanger body 10, and an opposing hanger 22. It is arranged between the door hanger body 10 and the urging spring 23 that urges the door hanger body 10 in a direction away from the opposing hanger 22, so that each car door 4, 5 can be easily tilted. It can be prevented by the configuration. Even if the distance between the opposing hanger 22 and the door hanger body 10 varies as the car doors 4 and 5 move, the opposing hanger 22 and the door hanger 7 are It is possible to prevent squeezing between the door rail 3 and the guide rail 21. Therefore, it is possible to improve the reliability of the operation of the door tilt prevention device 20.

Further, when the door hanger 7 is moved along the door rail 3, each hanger roller 9 is rolled on the door rail 3, so that the door hanger 7 can be smoothly moved along the door rail 3.

In the above example, for each of the car doors 4 and 5, a force in which the number of urging springs 23 disposed between the door hanger body 10 and the opposite hanger body 25 is one is described. A plurality of urging springs 23 may be disposed between the nga body 10 and the opposing hanger body 25. In this case, the biasing springs 23 are arranged along the door rail 3 at intervals.

[0047] Embodiment 2.

FIG. 2 is a front view showing an elevator door device according to Embodiment 2 of the present invention. In the drawing, a displacement rail (displacement body) 31 that can be displaced in the vertical direction with respect to the door rail 3 is disposed above the door rail 3 along the door rail 3. The length of the displacement rail 31 is substantially the same as the length of the door rail 3.

[0048] Above the displacement rail 31, a plurality (three in this example) of spring receiving portions 32 fixed to the hanger case 2 are provided. The spring receiving portions 32 are arranged at intervals in the direction along the door rail 3.

Between each spring receiving portion 32 and the displacement rail 31, an urging spring (biasing body) 33 that urges the displacement rail 31 in a direction approaching the door rail 3 (downward) is disposed. Each biasing spring 33 is arranged in a contracted state between the spring receiving portion 32 and the displacement rail 31.

The displacement rail 31 is in contact with the upper part of each hanger roller 9. Each hanger roller 9 is pushed downward by a displacement rail 31 urged by each urging spring 33. That is, each hanger roller 9 receives a downward biasing force of each biasing spring 33 via the displacement rail 31. Each hanger roller 9 is movable along the door rail 3 while being pushed by the displacement rail 31.

[0051] The door hanger 7 is configured such that each hanger roller 9 is pushed by the displacement rail 31 (that is, each hanger roller 9 receives a biasing force from each biasing spring 33 via the displacement rail 31).

), And each hanger roller 9 is urged in a direction to be pressed against the door rail 3.

[0052] Note that the door tilt prevention device 34 includes a displacement rail 31, each spring receiving portion 32, and each biasing spring.

33. Other configurations are the same as those in the first embodiment.

Next, the operation of the door tilt prevention device 34 will be described. Each hanger roller 9 is pushed downward by a displacement rail 31 urged by each urging spring 33. Thereby, each hanger roller 9 is pressed against the door rail 3.

When the car doors 4 and 5 are moved, each hanger roller 9 is rolled on the door rail 3 while sliding with respect to the displacement rail 31 while receiving the pressing force from the displacement rail 31.

When each door hanger 7 is displaced in the vertical direction due to unevenness on the door rail 3, the displacement rail 31 is displaced upward and downward together with each door hanger 7 while pushing each hanger roller 9 downward. [0056] In such an elevator door device, the door tilt prevention device 34 force is provided with a displacement rail 31 that is displaceable with respect to the door rail 3, and a biasing spring 33 that biases the displacement rail 31 in a direction approaching the door rail 3. And each hanger roller 9 is pressed against the door rail 3 by being pressed by the displacement rail 31, so that the same effect as in the first embodiment can be obtained and the number of parts of the door inclination prevention device 34 can be reduced. And the structure can be further simplified. Therefore, it is possible to further reduce the manufacturing cost and further reduce the size of the door device.

[0057] Here, it is conceivable that the displacement rail is fixed to the hanger case 2 and each hanger roller 9 is sandwiched between the door rail 3 and the displacement rail. If the hanger case 2 is slightly tilted, each hanger roller 9 when moving along the door rail 3 may get caught between the door rail 3 and the displacement rail. In order to prevent each hanger roller 9 from squeezing between the door rail 3 and the displacement rail, the displacement rail and the door rail 3 must be exactly parallel to each other! It is necessary to increase machining accuracy and mounting accuracy, which increases manufacturing costs and assembly time.

[0058] In the door tilt prevention device 34, since the displacement rail 31 is displaceable with respect to the door rail 3, each hanger roller 9 can be prevented from being caught between the displacement rail 31 and the door rail 3. And reliability of operation can be improved. Further, since it is necessary to extremely increase the processing accuracy and mounting accuracy of the displacement rail 31, it is possible to reduce the manufacturing cost and the assembly time.

[0059] Embodiment 3.

FIG. 3 is a front view showing an elevator door device according to Embodiment 3 of the present invention. In the figure, each door hanger body 10 is provided with a protruding roller (transmitting body) 41 that contacts the displacement rail 31. The protruding roller 41 is disposed at a position closer to the displacement rail 31 than each hanger roller 9. That is, a part of the protruding roller 41 protrudes toward the displacement rail 31 from each hanger roller 9. Thus, each protruding roller 41 is in contact with the displacement rail 31 and is separated from the door rail 3. Each hanger roller 9 is in contact with the door rail 3 and is separated from the displacement rail 31. [0060] The protruding roller 41 is disposed between the hanger rollers 9 in the horizontal direction. Further, the protruding roller 41 is pushed downward by the displacement rail 31 urged by each urging spring 33. That is, the protruding roller 41 receives a downward biasing force of each biasing spring 33 via the displacement rail 31. The protruding roller 41 is movable together with the door hanger 7 while being pushed by the displacement rail 31.

[0061] The door hanger 7 is urged in a direction in which each hanger roller 9 is pressed against the door rail 3 when the protruding roller 41 is pressed by the displacement rail 31. That is, each hanger roller 9 is pressed against the door rail 3 when the projecting roller 41 receives a biasing force from each biasing spring 33 via the displacement rail 31.

The door tilt prevention device 42 includes a displacement rail 31, each spring receiving portion 32, each biasing spring 33, and each protruding roller 41. Other configurations are the same as those in the second embodiment.

Next, the operation of the door tilt prevention device 42 will be described. Each protruding roller 41 is pushed downward by a displacement rail 31 biased by each biasing spring 33. Thereby, each hanger roller 9 is pressed against the door rail 3.

When the car doors 4 and 5 are moved, each protruding roller 41 is rolled while being in contact with the displacement rail 31 while receiving the pressing force from the displacement rail 31. That is, when the car doors 4 and 5 are moved, each protruding roller 41 is moved together with the door hanger 7 while being pushed downward by the displacement rail 31.

[0065] When each door hanger 7 is displaced in the vertical direction due to unevenness on the door rail 3, the displacement rail 31 is displaced upward and downward together with each door hanger 7 while pushing each projection roller 41 downward. .

[0066] In such an elevator door device, a protrusion roller 41 that is pushed downward by the displacement rail 31 is provided in the door hanger body 10, and the protrusion roller 41 is closer to the displacement rail 31 than the hanger roller 9 and is in a position. Therefore, the same effects as those of the first embodiment can be obtained, and the displacement rail 31 can be prevented from coming into contact with each hanger roller 9. Thereby, when the door hanger 7 moves along the door rail 3, the resistance that the door hanger 7 receives from the displacement rail 31 can be reduced. Therefore, the urging force of each urging spring 33 can be increased, and the car doors 4, 5 can be prevented from being inclined when the car doorway 1 is opened and closed. Can be further planned.

In the above example, the door hanger body 10 may be provided with a plurality of protruding rollers 41 having a single protruding roller 41 for each of the car doors 4 and 5. In this case, the protruding rollers 41 are arranged at intervals along the door rail 3 between the hanger rollers 9.

[0068] In each of the above-described embodiments, a landing door that opens and closes a power landing doorway (elevator doorway) in which the present invention is applied to an elevator door device having car doors 4 and 5 that open and close the car doorway 1 Apply this invention to an elevator door device having an (elevator door).

Claims

The scope of the claims

[1] A door rail provided above the elevator doorway and arranged along the entrance direction of the elevator doorway,

Each of the contact bodies has a plurality of contact bodies placed on the door rail and spaced apart from each other along the door rail, and a common door hanger body provided with the contact bodies. A door hanger that can move along the door rail while in contact with the door rail;

The door hanger is provided on the door hanger body and is moved together with the door hanger to open and close the elevator door. The door panel is disposed above the door rail and biases the door hanger in a direction in which each contact body is pressed by the door rail. Door tilt prevention device

An elevator door device comprising:

[2] The door tilt prevention device includes a guide rail disposed along the door rail, an opposing moving body that is movable along the guide rail while facing the door hanger body, the opposing moving body, and the door hanger. An urging body arranged between the main body and urging the door hanger body in a direction away from the opposing moving body;

The door hanger is configured such that the door hanger body is urged by the urging body.

The elevator door device according to claim 1, wherein each of the contact bodies is biased in a direction in which the contact body is pressed against the door rail.

[3] The door tilt prevention device includes a displacement body that is disposed along the door rail and is displaceable with respect to the door rail, and a biasing body that biases the displacement body in a direction approaching the door rail.

Each of the contact bodies is movable along the door rail while being pressed by the displacement body,

The elevator door according to claim 1, wherein the door hanger is urged in a direction in which each contact body is pressed against the door rail when the contact body is pressed by the displacement body. apparatus.

[4] The door tilt prevention device is disposed along the door rail and is arranged with respect to the door rail. A displacement body that is displaceable, a biasing body that biases the displacement body in a direction approaching the door rail, and a transmission that is provided on the door hanger body and is moved together with the door hanger while being pushed by the displacement body. Having a body,

The transmission body is disposed closer to the displacement body than the contact body, and the contact hanger is pressed against the door rail by the transmission body being pushed by the displacement body. The elevator door device according to claim 1, wherein the elevator door device is biased in a moving direction.

The elevator door device according to any one of claims 1 to 4, wherein each of the contact bodies is a hanger roller that rolls on the door rail.