JPH0680361A - Door opening/closing device for elevator - Google Patents

Abstract

PURPOSE:To prevent fluctuation of sliding door at opening/closing and turning reversely regardless of the ceiling height of a cage so as to open/close at high speed, and let the girder for fitting a door machine to be in a decided size regardless of the ceiling height so as to improve productivity in installation of an elevator. CONSTITUTION:This door opening/closing device of an elevator is consituted of a door machine 5 constituted of an electric motor 12 which is arranged in front of a front face plate 10b covering between the entrance 2 of a cage and an upper face plate 10a and drives normally and reversely, a pulley rotationally moved with the motor 12 and reduced in speed, and a link mechanism of which one end is pivotally fitted to the rotationally moving end part of a driving arm 6 interlocked with the pulley and one end is pivotally fitted to an arm hanging a sliding door and converts rotational movement of the pulley to reciprocation, a a door machine fitting girder 11 consitituted of a beam over girder 11a horizontally fitted to a car frame 21, a beam under girder 11b arranged in front of the front face plate 10b and a combining plate 11c to combine them together and a controller 13 installed above the beam over girder 11a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door opening / closing device for opening and closing a car entrance by means of left and right sliding doors.

[0002]

2. Description of the Related Art As a conventional elevator door opening / closing device of this type, a technique disclosed in JP-A-55-68986 can be cited. FIG. 7 is a front view of a conventional elevator door opening / closing device, and FIG. 8 is a side view of FIG. 7.

In the figure, 1 is an elevator car, 2 is an entrance / exit of the elevator car 1, 3 and 4 are left and right sliding doors for opening and closing the entrance / exit 2 by half, and 5 is located above the entrance / exit 2. The door machine is installed, and the pair of drive arms 6 are arranged symmetrically around the output shaft 5a of the door machine 5 via a third pulley 19 described later by matching the intermediate portion thereof with the output shaft 5a of the door machine 5. It is rotatably attached. Then, a part of the first link mechanism 7 and a part of the second link mechanism 8 are pivotally attached to the rotary end 6a of the one drive arm 6 and the rotary end 6b of the other drive arm 6, respectively. The other ends of these link mechanisms are the left and right sliding doors 3
The door hanger 3a of the sliding door 4 and the first arm 3b and the second arm 4b projecting above the door hanger 4a are pivotally attached to the upper ends thereof.

Further, numeral 10 is a car room upper plate disposed above the car room ceiling 9, and includes a horizontal upper surface plate 10a and this upper surface plate 1.
The front plate 10b hangs from the front end of 0a. 11
Is a girder for attaching a door machine, and is a girder upper beam 11a mounted near the upper part of the car room upper plate 10 and the car room upper plate 10.
Girder beams 11b arranged on the front side of the front plate 10b of
A connecting plate 11c that connects the girder upper beam 11a and the girder lower beam 11b is integrally configured. This girder beam 11a
An electric motor 12 that is driven in forward and reverse directions and a controller 13 that controls such driving are provided on the upper side of the box. These are provided in a box body 14 fixed to the upper side of the girder beam 11a. ing. A first pulley 15 is fitted and fixed to a shaft 12a of the electric motor 12, and a second pulley 17 to which a driving force is transmitted from the first pulley 15 via an endless belt 16 and a second pulley 17 are coaxially fixed to the second pulley 17. A small pulley 17a that is driven and a third pulley 19 that is driven via an endless belt 18 are pivotally attached to the front plate 14a of the box body 14. The pivot shaft of the third pulley 19 is the output shaft 5 of the door machine 5.
It also serves as a and serves as an intermediate portion of the pair of drive arms 6 as described above. Further, the girder beam 11b arranged on the front side of the front plate 10a of the cab upper plate 10 has a hanger rail 2
0 is fixed, and the sliding door 3 is mounted on the hanger rail 20.
The hanger roller 3c pivotally attached to the door hanger 3a and the hanger roller 4c pivotally attached to the door hanger 4a of the sliding door 4 are rotatably engaged with each other. Reference numeral 21 denotes a car frame, and the girder 11a of the door machine mounting girder 11 is fixed to the car frame 21.
22 is a door position sensor attached to the shaft end of the output shaft 5a, and 23 is a bearing of the output shaft 5a.

Next, the operation of the elevator door opening / closing device will be described. When the left and right sliding doors are opened, the electric motor 12 of the door machine 5 is energized by a signal from the controller 13, and the shaft 12a of the electric motor 12 and the first pulley 1 are sequentially arranged.
5, endless belt 16, second pulley 17, small pulley 17
When the output shaft 5a rotates counterclockwise in FIG. 7 via the a, the endless belt 18, and the third pulley 19, the drive arm 6 also rotates in the same direction. By this rotation of the drive arm 6, the left and right sliding doors 3 and 4 are pushed and opened in the left-right direction from the closed position via the first link mechanism 7 and the second link mechanism 8. On the other hand, when the electric motor 12 is urged in this state and the shaft 12a is driven in the reverse direction, the output shaft 5a and the drive arm 6 rotate clockwise in FIG. Therefore, the left and right sliding doors 3 and 4 are attracted via the first link mechanism 7 and the second link mechanism 8, and the opposing ends of these are abutted to close the doorway 2. This elevator door opening / closing device is called a double link door device.

[0006]

However, in the above-mentioned conventional elevator door opening / closing device, the output shaft 5a, which is the driving point of the door machine 5, is located above the cab ceiling 9, and the top plate of the cab upper plate 10 is provided. 10a and the upper beam 11a of the door machine mounting girder 11 are arranged above the output shaft 5a.
Are largely separated from the upper ends of the sliding doors 3 and 4, and thus, when the sliding doors are opened / closed and inverted, it is difficult to open / close the sliding doors at high speed. In particular, in recent years, it has been required to raise the ceiling of the cab. Therefore, if the ceiling of the cab is raised, the driving point moves further upward, and it becomes more difficult to respond to the high speed opening and closing of the sliding door. .

In the installation of the elevator, it is necessary to change the height of the girder beam 11a of the door machine mounting girder 11, that is, the length of the connecting plate 11c in accordance with the height of the car room ceiling 9. , Productivity was bad.

Therefore, the present invention can prevent the sliding door from wobbling during opening / closing and reversing regardless of the height of the ceiling of the cab, and can open / close at a high speed. It is an object of the present invention to provide an elevator door opening / closing device that improves productivity in installing an elevator by setting the door machine mounting girder to have a constant size.

[0009]

An elevator door opening / closing apparatus according to the present invention is arranged in front of a front plate covering a space between a doorway of a cab and a canopy, and is an electric motor for driving in a forward / reverse direction. A pulley that is rotated by an electric motor, a door machine that has one end pivotally attached to an arm that suspends a sliding door, and includes a link mechanism that changes the rotation of the pulley into a reciprocating motion, and a car frame that supports the cab from the outside. A horizontally mounted girder beam, a girder beam arranged in front of the front plate,
It is composed of a connecting plate that connects these girder beams and girder beams, and is mounted above the girder beams of the door machine mounting girder for mounting the door machine, and the girder for the door machine mounting, And a controller for controlling driving of the electric motor.

[0010]

In the present invention, the controller of the door machine is provided above the girder beam of the girder for mounting the door machine, and the electric motor and the pulley are arranged in front of the front plate of the car room upper plate. Even if the room has a high ceiling, the output shaft, which is the driving point of the door machine, can be lowered to reduce the distance from the sliding door. As a result, it is possible to prevent the sliding door from wobbling when the door is opened and closed, and when the door is inverted, and the door machine mounting girder can be made to have a constant height, thereby improving the productivity in installing the elevator.

[0011]

【Example】

<First Embodiment> First, a first embodiment of the present invention will be described with reference to FIGS. 1 is a front view of an elevator door opening / closing apparatus according to a first embodiment of the present invention, and FIG. 2 is a side view of FIG. In the figure, the same reference numerals as those in FIGS. 7 and 8 are the same as or equivalent to the conventional components.

In the figure, a controller 13 for controlling driving of an electric motor 12 is a girder beam 11 of a door machine mounting girder 11.
It is attached to the upper surface of the upper surface plate 10a of the cab upper plate 10 above a. Reference numeral 24 denotes a mounting plate arranged in front of the front plate 10b of the cab upper plate 10 having a high ceiling. The upper beam 11a and the lower beam 11 of the door machine mounting girder 11 are provided.
It is fixed to a connecting plate 11c for connecting b. The front plate 10 of the cab upper plate 10 is attached to the mounting plate 24.
The second pulley 17 and the third pulley 17
A pulley 19 is pivotally mounted, and an output shaft 5a which also functions as a pivot shaft of the third pulley 19 is mounted on the front surface of a mounting plate 24, and the electric motor 12 is mounted on the opposite side of the mounting plate 24.
Is installed. The electric motor 12 is the car room upper plate 1
Since it is necessary to mount it in the space in front of the front plate 10b of No. 0, a flat type electric motor having a short depth is used. The door position sensor 22 is the door machine mounting girder 11
Is attached to the under beam 11b.

The operation of the elevator door opening / closing apparatus of this embodiment is the same as that of the conventional elevator door opening / closing apparatus shown in FIGS. 7 and 8, and therefore its explanation is omitted. Next, the operation of the elevator door opening / closing device of this embodiment will be described.
In this embodiment, the controller 13 of the door machine 5 is provided above the girder 11a located above the cab ceiling 9,
Since the electric motor 12 and each pulley are mounted on the mounting plate 24 installed between the connecting plates 11c of the door machine mounting girder 11 and arranged in front of the front plate 10b of the car room upper plate 10, the car room has a high ceiling. However, the output shaft 5a, which is the driving point of the door machine 5, can be positioned below to bring the upper ends of the sliding door 3 and the sliding door 4 closer to each other. As a result, the sliding door 3 and the sliding door 4 are prevented from wobbling when opening and closing and when reversing.

As described above, in the elevator door opening / closing device of the above-described embodiment, the doorway 2 of the cab and the top plate 1 which is the canopy.
0a, which is arranged in front of the front plate 10b, which drives forward and reverse rotation, the first pulley 15, the second pulley 17, the third pulley 19, which is decelerated and rotated by the electric motor 12, has one end The first arm 3b, which is pivotally attached to the rotating end portion 6a and the rotating end portion 6b of the drive arm 6 interlocking with the third pulley 19 and has one end suspending the sliding door 3 and the sliding door 4, the second arm 3b.
A door machine 5 pivotally mounted on an arm 4b to convert the rotation of the pulley into a reciprocating motion, the door machine 5 including a first link mechanism 7 and a second link mechanism 8, and a car frame 21 that horizontally supports the car room, and is horizontally attached to the car frame 21. The girder beam 11a, the girder beam 11b arranged in front of the front plate 10b, and the connecting plate 11c connecting the girder beam 11a and the girder beam 11b. The door machine mounting girder 11 that is mounted, and the upper surface plate 10 of the cab upper plate 10 located above the girder beam 11a of the door machine mounting girder 11.
The controller 13 is mounted on the upper surface of a and controls the drive of the electric motor 12.

Therefore, according to the above embodiment, by reducing the distance between the output shaft 5a of the door machine 5 and the sliding door 3 and the sliding door 4, it is possible to prevent the sliding door 3 and the sliding door 4 from wobbling when opening and closing and when reversing. As a result, even if the cab interior ceiling 9 is raised, the sliding doors 3 and 4 can be opened and closed at high speed, and the operation efficiency of the elevator can be improved.

Further, since the door machine mounting girder 11 can be set to a constant height irrespective of the height of the car room ceiling 9, the productivity in installing the elevator is improved. The present embodiment corresponds to the aspect of claim 1.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. 3 is a front view of an elevator door opening / closing apparatus according to a second embodiment of the present invention, and FIG. 4 is a side view of FIG. In the figure, the same reference numerals as those in FIGS. 1 and 2 are the same as or correspond to the components of the first embodiment.

In the drawing, a controller 13 is a cab upper plate 10 above a girder beam 11a of a girder 11 for mounting a door machine.
Is attached to the upper surface of the upper plate 10a. Reference numeral 24 is a mounting plate disposed in front of the front plate 10b of the car room upper plate 10 having a high ceiling, and is used as a connecting plate 11c for connecting the girder beam 11a and the girder beam 11b in the girder 11 for mounting the door machine. It is fixed. Then, the mounting plate 24 is provided in front of the front plate 10b of the cab upper plate 10 so as to be close to the front plate 10b.
The pulley 17 and the third pulley 19 are pivotally mounted, and the output shaft 5a, which also functions as the pivot shaft of the third pulley 19, is mounted on the front surface of the mounting plate 24. Further, the mounting plate 2
An electric motor 12 is attached to the side opposite to the front plate 10b of the cab upper plate 10 on the side opposite to 4. The door position sensor 22 is attached to the girder lower beam 10b of the cab upper plate 10.

That is, in the elevator door opening / closing apparatus of the second embodiment, the electric motor 12 of the first embodiment is attached to the mounting plate 2.
Since it is arranged on the side of the front plate 10b of the cab upper plate 10 via the connector 4, it is possible to expect the same operation and effect as in the first embodiment. Since the restriction of 1 is relaxed, a normal electric motor can be used. The second embodiment corresponds to the aspect of claim 2.

<Third Embodiment> A third embodiment will be described. FIG. 5 is a front view of an elevator door opening / closing device according to a third embodiment of the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 4 are the same as or correspond to the constituent parts of the above-described embodiments. In the figure, reference numeral 25 denotes a planetary friction reducer mounted on a mounting plate 24 similar to that of the first embodiment or the second embodiment, and a first pulley 26 directly connected to the electric motor 12 is used as an input, and an outer ring portion 27 is a first. With two pulleys, the rotation of the electric motor 12 is reduced. The outer ring portion 27 as the second pulley and the third pulley 19 are transmitted by the endless belt 18.

That is, in the elevator door opening / closing device of the third embodiment, the controller 13 is mounted above the girder beam 11a, and the planetary friction is used instead of the second pulley 17 of the first and second embodiments. Since the reduction gear 25 is attached and is disposed in front of the front plate 10b of the cab upper plate 10 together with the electric motor 12 and the third pulley 19 via the mounting plate 24,
It is possible to reduce the installation space of the reduction mechanism that reduces the speed from the electric motor 12 to the output shaft 5a. In addition,
The third embodiment corresponds to the aspect of claim 3.

<Fourth Embodiment> Next, a fourth embodiment will be described. FIG. 6 is a front view of an elevator door opening / closing device according to a fourth embodiment of the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 5 are the same as or correspond to the constituent parts of the above-described embodiments. In the figure, the electric motor 12 and the planetary friction reducer 25 directly connected to the electric motor 12 are attached to the side of the front plate 10b of the cab upper plate 10 at the mounting plate 24. Other configurations are similar to those of the third embodiment.

Therefore, the elevator door opening / closing device of the fourth embodiment can be expected to have the same operation and effect as those of the third embodiment, and in particular, the electric motor 12 and the planetary friction reducer 2 can be expected.
Since the restriction on the mounting space of No. 5 is relaxed, an ordinary electric motor and planetary friction reducer can be used. The fourth embodiment corresponds to the aspect of claim 4.

By the way, in each of the above-described embodiments, one end of the first link mechanism 7 and the second link mechanism 8 for opening and closing the sliding door 3 and the sliding door 4 is connected to the rotation of the pair of drive arms 6 for rotating the rotation of the third pulley 19. Although the link mechanism is pivotally attached to the moving end portion 6a and the rotating end portion 6b, the present invention is not limited to this, and the first link mechanism 7 and the second link mechanism 8 are not limited thereto. May be directly attached to the opposite rotary ends of the third pulley 19. In each of the above embodiments, the first pulley 15, the second pulley 17, the third pulley 19
However, the number of pulleys is not limited to these when implementing the present invention.
Further, although the electric motor 12, the speed reducer 25, and the pulley of each of the above-described embodiments are mounted on the mounting plate 24, the present invention is not limited to this. The girder upper beam 11a and the lower girder beam of the door machine mounting girder 11 are not limited to this. It is also possible to directly attach each to the connecting plate 11c that connects 11b.

[0025]

As described above, in the elevator door opening and closing apparatus according to the first aspect of the present invention, the controller is mounted above the girder beam of the door machine mounting girder, and the electric motor and the speed reducing pulley are mounted in the cab. It is arranged in front of the front plate of the upper plate. Therefore, the output shaft, which is the driving point of the door machine, can be lowered to reduce the distance from the sliding door, and thus the sliding door can be prevented from wobbling during opening / closing and reversing. As a result, even if the cab has a high ceiling, the sliding door can be opened and closed at high speed, and the operation efficiency of the elevator can be improved. Further, since the door machine mounting girder can be set to a constant height regardless of the height of the ceiling of the car room, the productivity in installing the elevator is improved.

Further, in the elevator door opening / closing device according to the second aspect of the present invention, the controller is mounted above the girder beam of the door machine mounting girder, and the electric motor is arranged beside the front plate of the cab upper plate. And the pulley is arranged in front of the front plate of the cab upper plate. Therefore, in particular, the restriction on the installation space of the electric motor is relaxed, and a normal electric motor can be used.

Further, in the elevator door opening / closing device according to a third aspect of the present invention, the controller is mounted above the girder beam of the door machine mounting girder, and the speed reducer for decelerating the drive of the electric motor together with the electric motor and the pulley. It is arranged in front of the front plate of the cab upper plate. Therefore, in particular, the space required for the reduction mechanism from the electric motor to the output shaft can be reduced.

In the elevator door opening / closing device according to a fourth aspect of the present invention, the controller is mounted above the girder beam of the door machine mounting girder, and the speed reducer for decelerating the drive of the electric motor is installed in the cab together with the electric motor. The pulley is arranged beside the front plate of the upper plate, and the pulley is arranged in front of the front plate of the cab upper plate. Therefore, in particular, the restriction on the installation space of the electric motor and the planetary friction reducer is relaxed, so that a normal electric motor and the planetary friction reducer can be used.

[Brief description of drawings]

FIG. 1 is a front view of an elevator door opening / closing device according to a first embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view of an elevator door opening / closing device according to a second embodiment of the present invention.

FIG. 4 is a side view of FIG.

FIG. 5 is a front view of an elevator door opening / closing device according to a third embodiment of the present invention.

FIG. 6 is a front view of an elevator door opening / closing device according to a fourth embodiment of the present invention.

FIG. 7 is a front view of a conventional elevator door opening / closing device.

FIG. 8 is a side view of FIG. 7.

[Explanation of symbols]

 2 doorways 3,4 sliding doors 3b first arm 4b second arm 5 door machine 7 first link mechanism 8 second link mechanism 10a top plate 10b front plate 11 door machine mounting girder 11a girder up beam 11b girder down beam 11c connecting plate 12 electric motor 13 controller 15 first pulley 17 second pulley 19 third pulley 21 car frame 25 planetary friction reducer

Claims (4)

[Claims] 1. A motor provided in front of a front plate that covers between a doorway of a car room and a canopy, for forward and reverse rotation driving, a pulley for decelerating and rotating the motor, and a sliding door at one end. A door machine pivotally attached to a suspended arm and comprising a link mechanism that changes the rotation of the pulley into a reciprocating motion, and a girder horizontally attached to a car frame that supports the car room from the outside, A door machine mounting girder configured to have the girder beams arranged in front of the front plate and a connecting plate connecting the girder upper beam and the girder lower beam, and the door machine mounting girder for mounting the door machine, and the door. Installed above the girder beam of the machine mounting girder,
A door opening / closing device for an elevator, comprising: a controller that controls driving of the electric motor. 2. An electric motor, which is disposed on the side of a front plate that covers between the doorway of the cab and the canopy, and which drives forward and reverse rotation, and arranged in front of the front plate to reduce the rotation of the electric motor. Door machine including a pulley for rotating the pulley and a link mechanism, one end of which is pivotally attached to an arm that suspends a sliding door, for changing the rotation of the pulley into reciprocating motion, and a car frame for supporting the cab from the outside. A girder beam horizontally attached to the front plate, a girder beam arranged in front of the front plate, and a connecting plate for connecting the girder beam and the girder beam to the door machine. A door machine mounting girder that is mounted, and is mounted above the girder beam of the door machine mounting girder,
A door opening / closing device for an elevator, comprising: a controller that controls driving of the electric motor. 3. An electric motor, which is arranged in front of a front plate covering a doorway of a car room and a canopy, and which drives in a forward and reverse direction, a speed reducer for reducing the rotation of the electric motor, and a speed reduction of the rotation of the electric motor. Door machine including a pulley for rotating the pulley and a link mechanism, one end of which is pivotally attached to an arm that suspends a sliding door, for changing the rotation of the pulley into reciprocating motion, and a car frame for supporting the cab from the outside. A girder beam horizontally attached to the front plate, a girder beam arranged in front of the front plate, and a connecting plate for connecting the girder beam and the girder beam to the door machine. A door machine mounting girder that is mounted, and is mounted above the girder beam of the door machine mounting girder,
A door opening / closing device for an elevator, comprising: a controller that controls driving of the electric motor. 4. An electric motor, which is disposed on a side of a front plate that covers between a doorway of a cab and a canopy, drives forward and reverse rotations, a speed reducer that reduces the rotation of the electric motor, and is arranged in front of the front plate. A pulley for rotating the electric motor by decelerating the rotation of the electric motor, and one end of which is pivotally attached to an arm suspending a sliding door,
A door machine including a link mechanism that changes the rotation of the pulley into a reciprocating motion, a girder beam horizontally attached to a car frame that supports the car room from the outside, and a girder provided in front of the front plate. A girder beam and a girder for the door machine, which is composed of a connecting plate that connects the girder beam and the girder beam, and is used to mount the door machine, and the girder beam of the girder for mounting the door machine. Mounted above,
A door opening / closing device for an elevator, comprising: a controller that controls driving of the electric motor.