JP2616643B2 - Elevator door opener - Google Patents

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 apparatus for opening and closing a car entrance with left and right sliding doors.

[0002]

2. Description of the Related Art As a conventional door opening / closing device for an elevator of this kind, there is a technology disclosed in Japanese Patent Application Laid-Open No. 55-68986. 7 is a front view of a conventional elevator door opening / closing device, and FIG. 8 is a side view of FIG.

In the drawing, 1 is an elevator car, 2 is an entrance and exit of the elevator car 1, 3 and 4 are left and right sliding doors for opening and closing the entrance 2 by half, and 5 is arranged above the entrance 2. A pair of drive arms 6 whose intermediate portions match the output shaft 5a of the door machine 5 and symmetrically around the output shaft 5a of the door machine 5 via a third pulley 19 described later. It is rotatably mounted. Partial ends of the first link mechanism 7 and the second link mechanism 8 are respectively pivotally attached to the rotating end 6a of the one driving arm 6 and the rotating end 6b of the other driving arm 6, respectively. The other ends of these link mechanisms are connected to the left and right sliding doors 3.
And, the door hanger 3a of the sliding door 4 and the first arm 3b and the second arm 4b protruding above the door hanger 4a are pivotally attached to upper ends thereof, respectively.

[0004] Reference numeral 10 denotes a cab upper plate disposed above the cab ceiling 9, which comprises a horizontal upper plate 10a and a upper plate 1a.
0a and a front plate 10b hanging down from the front end. 11
Is a girder for mounting a door machine, which includes a girder beam 11a mounted close above the cab upper plate 10 and a cab upper plate 10.
A girder under beam 11b disposed on the front side of the front plate 10b;
The upper beam 11a and the lower beam 11b are integrally formed with a connecting plate 11c for connecting the lower beam 11b. This girder beam 11a
An electric motor 12 driven forward and backward and a controller 13 for controlling the driving and the like are provided on the upper side of the box. These are provided in a box body 14 fixed on the upper side of the beam 11a. ing. A first pulley 15 is fitted and fixed to a shaft 12 a 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 is coaxially fixed to the second pulley 17. A third pulley 19 driven from the small pulley 17a thus driven via an endless belt 18 is pivotally attached to the front plate 14a of the box 14. The pivot shaft of the third pulley 19 is connected to the output shaft 5 of the door machine 5.
a, and is an intermediate portion between the pair of drive arms 6 as described above. Furthermore, the hanger rail 2 is attached to the girder beam 11b disposed on the front side of the front panel 10a of the cab upper panel 10.
0 is fixed, and the sliding door 3
A hanger roller 3c pivotally attached to the door hanger 3a and a 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 to which the beam 11a of the door machine mounting beam 11 is fixed.
Reference numeral 22 denotes a door position sensor attached to a shaft end of the output shaft 5a, and reference numeral 23 denotes a bearing of the output shaft 5a.

Next, the operation of the elevator door opening and 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, the first pulley 1
5, endless belt 16, second pulley 17, small pulley 17
When the output shaft 5a rotates counterclockwise in FIG. 7 via the endless belt 18 and the third pulley 19, the drive arm 6 also rotates in the same direction. By the rotation of the driving arm 6, the left and right sliding doors 3 and 4 are pushed and opened in the left and right directions from the closed position via the first link mechanism 7 and the second link mechanism 8. On the other hand, in this state, when the electric motor 12 is energized and the shaft 12a is driven to rotate in the reverse direction, the output shaft 5a and the drive arm 6 rotate clockwise in FIG. For this reason, the left and right sliding doors 3 and 4 are pulled in via the first link mechanism 7 and the second link mechanism 8, and their facing ends abut to close the entrance 2. This elevator door opening / closing device is called a double-link type door device.

[0006]

However, in the conventional elevator door opening and 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 upper plate of the cab upper plate 10. The output shaft 5a is provided above the beam 10a and the beam 11a of the door machine mounting beam 11.
Are greatly separated from the upper ends of the sliding doors 3 and 4, so that they fluctuate when opening and closing and reversing each sliding door, and it is difficult to open and close the sliding door at high speed. In particular, in recent years, high ceilings in the cabs have been required, so that when the ceilings are high, the driving points move upward, and it has become even more difficult to cope with high speed opening and closing of the sliding doors. .

In addition, when installing the elevator, it is necessary to change the height of the beam 11a of the girder 11 for mounting the door machine, that is, the length of the connecting plate 11c, each time according to the height of the cab ceiling 9. , Productivity was poor.

Therefore, the present invention can prevent the sliding door from swaying at the time of opening and closing and reversing regardless of the height of the ceiling of the cab, and can open and close the sliding door at a high speed. Another object of the present invention is to provide an elevator door opening / closing device in which the productivity in the installation of an elevator is improved by setting the door machine mounting girder to a fixed size.

[0009]

According to a first aspect of the present invention, there is provided an elevator door opening / closing apparatus provided between an upper surface plate of a cab upper plate forming a cab ceiling, and an entrance / exit of the cab and the upper surface plate. In an elevator including a front plate of a car room upper plate, a forward / reverse motor, a pulley driven by the motor and rotated at a speed lower than a rotation speed of the motor, and a reciprocating motion of the pulley A door machine comprising a link mechanism for changing the door machine is fixed to a door machine mounting girder provided in the cab, and disposed on the front side of the front plate.

According to a second aspect of the present invention, there is provided an elevator door opening / closing device, wherein a speed reducer for reducing the rotation of the electric motor is provided on the front side of the front plate of the cab upper plate, and is connected to the pulley.

[0011]

According to the first aspect of the present invention, the door machine controller is provided on the door machine mounting girder, and the electric motor and the pulley are arranged in front of the front plate of the cab upper plate. Even so, the output shaft, which is the driving point of the door machine, can be lowered to reduce the distance to the sliding door. As a result, the swinging of the sliding door at the time of opening and closing and at the time of inversion is prevented, and the door machine mounting girder can be kept at a constant height, thereby improving the productivity in installing the elevator.

According to the second aspect of the present invention, the speed reducer for reducing the rotation of the motor is provided on the front side of the front plate of the cab upper plate, and is connected to the pulley. Is reduced, and a normal electric motor can be used.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment First, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view of an elevator door opening and closing device according to a first embodiment of the present invention, and FIG. 2 is a side view of FIG. In the drawing, the same reference numerals as those in FIGS. 7 and 8 denote the same or corresponding parts as those of the conventional components.

In the figure, a controller 13 for controlling the driving of an electric motor 12 and the like is provided with an upper beam 11 of a door machine mounting beam 11.
a of the cab upper plate 10 above the upper surface 10a. Reference numeral 24 denotes a mounting plate disposed in front of the front plate 10b of the upper cab upper plate 10 with a raised ceiling, and the upper beam 11a and the lower beam 11 of the door machine mounting girder 11.
b and is fixed to a connection plate 11c that connects the first and second b. The front plate 10 of the cab upper plate 10 is attached to the mounting plate 24.
b, the second pulley 17 and the third pulley 17
A pulley 19 is pivotally mounted, and an output shaft 5a serving also as a pivot shaft of the third pulley 19 is mounted on the front surface of the mounting plate 24. Further, an electric motor 12 is mounted on the opposite side of the mounting plate 24.
Is installed. In addition, the electric motor 12 is a cab upper plate 1
Therefore, a flat-type electric motor having a short depth is used because it is necessary to mount the motor in a space in front of the front plate 10b. The door position sensor 22 is provided with the door machine mounting girder 11.
Is attached to the lower beam 11b.

The operation of the elevator door opening / closing device of this embodiment is the same as that of the conventional elevator door opening / closing device shown in FIGS. 7 and 8, and a description thereof will be omitted. Next, the operation of the elevator door opening and closing device of the present embodiment will be described.
In the present embodiment, the controller 13 of the door machine 5 is provided above the spar beam 11a located above the cab ceiling 9,
The electric motor 12 and the respective pulleys are mounted on a mounting plate 24 provided between the connecting plates 11c of the door machine mounting beam 11, and are disposed in front of the front plate 10b of the cab upper plate 10, so that the cab has a high ceiling. Even so, the output shaft 5a, which is the driving point of the door machine 5, can be positioned below and the upper ends of the sliding doors 3 and 4 can be approached. As a result, the sliding door 3 and the sliding door 4 are prevented from wobbling at the time of opening / closing and reversing.

As described above, the elevator door opening / closing device of the above-described embodiment includes the entrance / exit 2 of the cab and the top plate 1 serving as the canopy.
0a, which is disposed in front of the front plate 10b which covers the space between the first pulley 15, the second pulley 17, the third pulley 19, the third pulley 19, which is decelerated and rotated by the electric motor 12, and which has one end. A first arm 3b pivotally attached to the rotating end 6a and the rotating end 6b of the drive arm 6 interlocking with the third pulley 19 and having one end hanging from the sliding door 3 and the sliding door 4, a second arm 3b;
A door machine 5 comprising a first link mechanism 7 and a second link mechanism 8 pivotally mounted on the arm 4b to change the rotation of the pulley into reciprocating motion, and horizontally mounted on a car frame 21 supporting the cab from the outside. The upper beam 11a, the lower beam 11b disposed in front of the front panel 10b, and a connecting plate 11c connecting the upper beam 11a and the lower beam 11b. The door machine mounting girder 11 to be 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
a, which is attached to the upper surface of the motor a and controls the driving of the electric motor 12.

Therefore, according to the above embodiment, the distance between the output shaft 5a of the door machine 5 and the sliding doors 3 and 4 can be reduced to prevent the sliding of the sliding doors 3 and 4 at the time of opening and closing and reversing. As a result, even if the cab ceiling 9 is raised, the sliding doors 3 and 4 can be opened and closed at high speed, and the operating efficiency of the elevator can be improved. Further, since the door machine mounting girder 11 can be set at a constant height regardless of the height of the car room ceiling 9, productivity in elevator installation is improved.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a front view of an elevator door opening and closing device according to a second embodiment of the present invention, and FIG. 4 is a side view of FIG. In the drawing, the same reference numerals as those in FIGS. 1 and 2 denote the same or corresponding parts as those in the first embodiment.

In the figure, a controller 13 is a cab upper plate 10 above a beam 11a of a door machine mounting beam 11.
Is mounted on the upper surface of the upper surface plate 10a. Reference numeral 24 denotes a mounting plate disposed in front of the front plate 10b of the upper cab upper plate 10 having a raised ceiling. The mounting plate 24 is connected to a connecting plate 11c for connecting the girder upper beam 11a and the lower girder beam 11b in the door machine mounting girder 11. Fixed. The mounting plate 24 is provided in front of and in close proximity to the front plate 10b of the cab upper plate 10,
The pulley 17 and the third pulley 19 are pivotally mounted, and the output shaft 5 a also serving as the pivot 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 mounted on the side opposite to the front plate 10 b of the cab upper plate 10 on the side opposite to the side 4. The door position sensor 22 is attached to the lower beam 10b of the cab upper plate 10.

That is, the elevator door opening / closing device of the second embodiment uses the motor 12 of the first embodiment to
4, the same operation and effect as in the first embodiment can be expected. Is reduced, so that an ordinary electric motor can be used.

Third Embodiment Further, a third embodiment will be described. FIG. 5 is a front view of an elevator door opening and closing device according to a third embodiment of the present invention. In the drawings, the same reference numerals as those in FIGS. 1 to 4 denote the same or corresponding parts as those in the above embodiments. In the figure, reference numeral 25 denotes a planetary friction reduction gear mounted on a mounting plate 24 similar to that of the first embodiment or the second embodiment. The first pulley 26 directly connected to the electric motor 12 is used as an input, and the outer ring 27 is 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 spar beam 11a, and the planetary friction is replaced with the second pulley 17 of the first and second embodiments. Since the speed reducer 25 is mounted and 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 speed reduction mechanism that reduces the speed from the motor 12 to the output shaft 5a.

<Fourth Embodiment> Next, a fourth embodiment will be described. FIG. 6 is a front view of an elevator door opening and closing apparatus according to a fourth embodiment of the present invention. In the drawing, the same reference numerals as those in FIGS. 1 to 5 denote the same or corresponding parts as those in the above embodiments. In the figure, an electric motor 12 and a planetary friction reduction gear 25 directly connected thereto are mounted on the mounting plate 24 beside the front plate 10b of the cab upper plate 10. Other configurations are the same as in the third embodiment.

Therefore, the elevator door opening and closing device of the fourth embodiment can be expected to have the same functions and effects as those of the third embodiment. In particular, the electric motor 12 and the planetary friction reducer 2
Since the restriction on the mounting space of No. 5 is relaxed, a normal electric motor and a planetary friction reducer can be used. As described above, the elevator door opening / closing device of the above-described embodiment includes the cab upper plate 10 that forms the cab ceiling of the elevator car 1.
A motor 12 that rotates in the forward and reverse directions in an elevator including an upper surface plate 10a of the cab and a front plate 10b of the cab upper plate 10 provided between the entrance 2 of the cab and the upper surface plate 10a;
A door machine including pulleys 15, 17, 19, which are driven by the electric motor 12 and rotate at a speed lower than the rotation speed of the electric motor 12, and link mechanisms 7, 8 for changing the rotation of the pulleys 15, 17, 19 into reciprocating motion. 5 is fixed to a door machine mounting girder 11 provided in the cab, and is disposed on the front side of the front plate 10b. The controller 13 is mounted on the door machine mounting beam 11, and the electric motor 12 and the deceleration pulleys 15, 17, 19 are connected to the cab upper plates 15, 17, 19, respectively.
Is arranged in front of the front panel 10b, the output shaft, which is the driving point of the door machine 5, can be lowered to reduce the distance between the sliding doors 3 and 4. 4 can be prevented from wobbling. As a result, even if the cab has a high ceiling, the sliding doors 3 and 4 can be opened and closed at a high speed, and the operating efficiency of the elevator can be improved. Further, since the door machine mounting girder 11 can be set at a fixed height regardless of the height of the ceiling of the cab, workability and productivity in installing the elevator are improved.

In the elevator door opening / closing device of the above embodiment, the speed reducer including the planetary friction speed reducer 25 for reducing the rotation of the electric motor 12 is provided on the front plate 10b of the cab upper plate 10.
And connected to pulleys 15, 17, and 19. Therefore, the speed reducer including the planetary friction speed reducer 25 for reducing the rotation of the electric motor 12 is replaced with the cab upper plate 10.
Provided on the front side of the front plate 10b of the
7 and 19, even if the cab has a high ceiling, it is possible to reduce the distance between the sliding doors 3 and 4 by lowering the output shaft, which is the driving point of the door machine 5, and to reduce the distance between the sliding doors 3 and 4. , 4 can be prevented from wobbling at the time of opening and closing and reversing, and the door machine mounting girder 11 can have a constant height, so that the workability and productivity in elevator installation are improved.

In each of the above 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 rotated by the pair of drive arms 6 for rotating the third pulley 19. Although the link mechanism is pivotally attached to the moving end 6a and the rotating end 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 opposing rotating 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, when the present invention is implemented, the number of pulleys is not limited to these.
Further, the electric motor 12, the speed reducer 25, and the pulley of each of the above embodiments are mounted on the mounting plate 24. However, the present invention is not limited to this, and the upper beam 11a and the lower beam of the door machine mounting beam 11 are provided. It is also possible to directly attach to each of the connecting plates 11c connecting to the connecting plate 11b.

[0027]

As described above, the elevator door opening / closing device according to the first aspect of the present invention provides an elevator door opening / closing device which is provided between a top plate of a cab top plate forming a cab ceiling, and a doorway of the cab and the top plate. A door mechanism comprising a front plate of a car room upper plate provided, and a link mechanism driven by a forward / reverse motor to reduce the rotation speed of the motor and rotate the pulley to reciprocate. The machine is fixed to a door machine mounting girder provided in the cab and disposed on the front side of the front plate. Therefore, the door machine is provided on the door machine mounting girder, and the electric motor and the pulley are arranged in front of the front plate of the upper plate of the cab, so that even if the cab has a high ceiling, the driving point of the door machine is increased. By lowering the output shaft, the distance to the sliding door can be reduced. As a result, the swinging of the sliding door at the time of opening and closing and at the time of inversion is prevented, and the door machine mounting girder can be kept at a constant height, thereby improving the productivity in installing the elevator.

In the elevator door opening and closing device according to the second aspect, a speed reducer for reducing the rotation of the electric motor is provided on the front side of the front plate of the cab upper plate, and is connected to the pulley. In addition to the effect of item 1, in particular, the restriction on the mounting space of the motor is relaxed, and a normal motor can be used.

[Brief description of the drawings]

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

FIG. 4 is a side view of FIG. 3;

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 and closing apparatus 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]

 DESCRIPTION OF SYMBOLS 2 Entrance 3, 4 Sliding door 3b 1st arm 4b 2nd arm 5 Door machine 7 1st link mechanism 8 2nd link mechanism 10a Top plate 10b Front plate 11 Door machine attachment girder 11a Girder upper beam 11b Girder lower beam 11c Connecting plate DESCRIPTION OF SYMBOLS 12 Electric motor 13 Controller 15 1st pulley 17 2nd pulley 19 3rd pulley 21 Car frame 25 Planetary friction reduction gear

Claims (2)

(57) [Claims] An upper surface of a cab upper plate forming a cab ceiling.
Plate, provided between the entrance and exit of the cab and the top plate
In an elevator having a front panel of a cab upper panel, a forward / reverse motor is driven by the motor, and the
A pulley that rotates at a speed lower than the rotational speed of the motive;
And a link mechanism that changes the rotation of the pulley into reciprocating motion.
Door machine installed in the above cab
An elevator door opening and closing device fixed to an additional girder and disposed on the front side of the front plate . 2. A speed reducer for reducing the rotation of the electric motor.
Is provided on the front side of the front plate of the cab upper plate,
2. The method according to claim 1, wherein the pulley is connected to a pulley.
Elevator door opening and closing device.