JPH09309681A - Circular door device for elevator - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To obtain a circular door device for an elevator that has a small space for occupying a car, can easily arrange other elevator devices above the car, and can secure a foothold during maintenance work on the car. . SOLUTION: The car 2 is provided with a sliding door 5 that operates along a circular arc to open and close the entrance and exit, and the sliding door 5 is pinched by a first rotating body 26 and a second rotating body 29. And drive device 1
6 drives at least one of the first rotating body 26 and the second rotating body 29 via the transmission mechanism 31 to open and close the sliding door 5 by a frictional force. As a result, it is not necessary to install a door link or the like at the center of the car 2, and the space occupied by the car 2 is reduced. Then, another elevator device can be easily installed above the ceiling of the car 2, and maintenance work on the car 2 can be facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circular door device for an elevator provided with a sliding door which has an arcuate cross section and operates along the arc to open and close an entrance.

[0002]

2. Description of the Related Art FIG. 8 is a cross-sectional plan view of an elevator apparatus showing a conventional elevator circular door apparatus disclosed in, for example, Japanese Patent Laid-Open No. 3-26685. In the figure, 1 is a hoistway, 2 is a car with a circular cross section that hoists up and down the hoistway 1, 3 is a guide rail that is erected on the hoistway 1 and is erected on both sides of the car 2, and 4 is provided on the car 2. The entrance and exit 5 is a car sliding door which has an arcuate cross section and operates along the arc to open and close the entrance and exit 4.

Reference numeral 6 is a landing entrance / exit that constitutes a landing at which the car 2 is stopped, 7 is a landing door that opens and closes the landing entrance / exit 6 by operating along a circular arc in cross section, and 8 is a drive device provided in the car 2. Then, the electric motor 9, the speed reducer 10 connected to the electric motor 9, the door link 11 pivoted at one end and operated by the speed reducer 10, and the one end connected to the rotating end of the door link 11 and the other end to the car sliding door 5. Connected link 1
2.

Reference numeral 13 denotes a landing threshold which constitutes the lower edge of the hall entrance 6 and guides the opening / closing operation of the hall sliding door 7. Reference numeral 14 denotes a plate-like engaging member projecting from the car sliding door 5 to the hall sliding door 7 side. Is an engaging body made up of a pair of rollers provided at the landing sliding door 7 and at a position sandwiching the engaging member 14.

The conventional elevator circular door apparatus is constructed as described above, and when the electric motor 9 of the drive unit 8 is energized, the speed reducer 10, the door link 11, and the connecting link 12 are provided.
The car sliding door 5 is driven through the opening and closing operation. Along with this, the opening / closing operation of the car sliding door 5 is transmitted to the hall sliding door 7 by the engagement of the engaging member 14 and the engaging body 15, and the car sliding door 5 and the hall sliding door 7 are opened and closed together.

[0006]

In the conventional elevator circular door device as described above, the pivot end of the door link 11 is arranged near the center of the circle of the car 2. Therefore, most of the area of the top surface of the ceiling of the car 2 is occupied by the drive device 8. Therefore, installation of other devices (not shown) arranged on the car 2 is restricted, and the car 2
There is a problem that it is difficult to secure a foothold for the above maintenance work.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a circular door device for an elevator that occupies a small space on the car.

[0008]

In a circular door device for an elevator according to the present invention, a sliding door provided on a car and having an arc cross section and operating along the arc to open and close an entrance and exit, and on a car The drive device provided, the first rotating body provided on the drive device and pivotally attached via a vertical shaft and arranged in contact with one of the front surface side and the back surface side of the sliding door, and the drive device provided on the drive device. And a second rotary body that is pivotally attached via a vertical shaft and is arranged in contact with the other of the two to clamp the sliding door by the first rotary body, and the first rotary body and the second rotary body provided in the drive device. And a transmission mechanism for rotating at least one of the bodies.

Further, the elevator circular door apparatus according to the present invention is provided with an adjusting mechanism for changing the mutual distance between the first rotating body and the second rotating body.

Further, in the elevator circular door device according to the present invention, a rubbing tool for rubbing the first rotating body and the second rotating body is provided.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. 1 to 4 are views showing an example of an embodiment of the present invention, FIG. 1 is a cross-sectional plan view of an elevator device provided with a circular door device for an elevator, and FIG. 2 shows a drive device portion of FIG. FIG. 3 is an enlarged view showing a part cut away, FIG. 3 is an enlarged view taken along the line AA of FIG. 2, and FIG. 4 is an enlarged view taken along the line BB of FIG. In the figure, 1 is a hoistway, 2 is a car with a circular cross section that hoists up and down the hoistway 1, 3 is a guide rail that is erected on the hoistway 1 and is erected on both sides of the car 2, and 4 is provided on the car 2. The doorway 5 is a sliding door made of a car door that has an arcuate cross section and operates along the arc to open and close the doorway 4.

Reference numeral 6 denotes a hall entrance / exit that constitutes a hall where the car 2 stops, 7 is a hall sliding door that opens and closes the hall entrance / exit 6 by operating along a circular arc in cross section, and 13 is a hall entrance / exit 6
The floor sill that constitutes the lower edge of the car and guides the opening and closing operation of the hall sliding door 7, and 16 is a drive device provided in the car 2,
Is mounted above the ceiling of the car 2 by a support arm 17 extended from a fixed portion (not shown) of the car.

Reference numeral 18 is a base plate of the drive unit 16, and 19 is a base plate 1.
8, an electric motor with a reducer having an output shaft vertically arranged, 20 is a first gear fixed to the output shaft of the electric motor 18, and 21 is a first gear 20 pivotally attached to the base plate 18. An engaging second gear, 22 is an endless first timing belt wound around a first drive belt wheel 23 fixed to the shaft of the first gear 20, and 24 is a first timing belt fixed to the shaft of the second gear 21. The second timing belt is an endless belt wound around the two-drive belt wheel 25.

A first reference numeral 26 is a friction wheel which is pivotally attached to the base plate 18 and fixed to a shaft 27 whose axis is provided in the vertical direction and which is arranged in pressure contact with the rear surface of the left sliding door 5 in FIG. A rotary body, 28 is a first driven belt wheel fixed to the first rotary body 26 and wound around a second timing belt 24,
Reference numeral 29 is fixed to the base plate 18 and is pivotally attached to a shaft 30 whose axis is provided in the vertical direction, and is arranged so as to face the first rotating body 26 and is pressed against the surface side of the left sliding door 5 in FIG. It is the second rotating body arranged.

Reference numeral 31 is a transmission mechanism, which is composed of an electric motor 18, a first gear 20, a second gear 21, a first timing belt 22, a first drive belt wheel 23, a second timing belt 24 and a second drive belt wheel 25. ing. Note that FIG.
Similarly to the configuration of the left sliding door 5, the first rotating body 26 driven by the first timing belt 22 and arranged in pressure contact with the front surface of the sliding door 5 in FIG. It is provided in. In addition, the first rotating body 2
A second rotating body 29 is provided so as to face the sliding door 5 and is pressed against the front surface of the sliding door 5.

In the elevator circular door device constructed as described above, when the drive device 16 is instructed to open or close the sliding door 5, the electric motor 19 is energized to transmit the transmission mechanism 3.
The output is transmitted to the first rotating body 26 via 1. Then, the sliding door 5 that is pinched by the second rotary body 29 by the rotation of the first rotary body 26 is driven by frictional force to open and close.

With this structure, it is not necessary to install a door link for opening and closing the sliding door 5 in the circular center portion of the car 2, and the space required for installation on the car 2 is reduced. Further, another device (not shown) arranged on the car 2 above the ceiling of the car 2 can be easily provided. Further, it is possible to secure a scaffold for maintenance work on the car 2 and facilitate maintenance work.

Embodiment 2. 5 and 6 are views showing an example of another embodiment of the present invention, and FIG.
6 is an enlarged view corresponding to the C portion, and FIG. 6 is a sectional view taken along line D-D of FIG. In addition, a circular door device for an elevator is configured similarly to FIGS. 1 to 4 except for FIGS. 5 and 6. In the figure, the same reference numerals as those in FIGS. 1 to 4 indicate corresponding parts.

Reference numeral 32 denotes an eccentric plate, which is arranged on the lower surface of the horizontal portion of the base plate 18 and is vertically provided on one side and is provided on the second rotary member 2
A shaft 30 supporting 9 is fixed. Reference numeral 33 denotes an adjusting mechanism, which includes an eccentric plate, a fastener that is inserted through the horizontal portions of the eccentric plate 32 and the base plate 18 and is located at a position away from the shaft 30, and a nut that is screwed into the insertion end of the bolt. It is composed by.

In the circular door device for an elevator constructed as described above, the sliding door 5 pinched by the first rotating body 26 and the second rotating body 29 is driven by frictional force by the drive unit 16 and the transmission mechanism 31. It Therefore, although detailed description is omitted, the same effects as those of the embodiments of FIGS. 1 to 4 can be obtained in the embodiments of FIGS. 5 and 6.

In the embodiment shown in FIGS. 5 and 6, the adjusting mechanism 33 loosens the fastening force of the eccentric plate 32 to rotationally displace the eccentric plate 32, whereby the first rotating body 26 and the second rotating body 29 are rotated. It is possible to change the pinching pressure of the sliding door 5 due to. Therefore, the friction driving force by the first rotating body 26 and the second rotating body 29 can be appropriately adjusted,
The normal driving force of the sliding door 5 can be obtained, and the installation,
Work efficiency such as maintenance can be improved.

Embodiment 3 FIG. FIG. 7 is also a diagram showing an example of another embodiment of the present invention, which is equivalent to FIG. 5 described above.
A circular door device for an elevator is configured similarly to FIGS. 1 to 4 except for FIG. 7. In the figure, the same reference numerals as those in FIGS. 1 to 4 indicate corresponding parts, and 34 is a rubbing tool for rubbing the rolling surfaces of the first rotating body 26 and the second rotating body 29, which is made of a brush and comprises a base plate 18. Supported by.

Also in the elevator circular door device constructed as described above, the sliding door 5 pinched by the first rotating body 26 and the second rotating body 29 is driven by friction force by the drive device 16 and the transmission mechanism 31. To be done. Therefore, although detailed description is omitted, in the embodiment of FIG. 7, the same operation as that of the embodiment of FIGS. 1 to 4 can be obtained.

Further, in the embodiment of FIG. 7, the rolling surfaces of the first rotating body 26 and the second rotating body 29 are cleaned by the rubbing tool 34. Therefore, it is possible to prevent in advance the problem that the dust in the hoistway 1 is attached to the first rotary body 26 and the second rotary body 29 and the driving force of the sliding door 5 is impaired. Therefore, the normal driving force of the sliding door 5 can be maintained, and maintenance management can be facilitated.

[0025]

As described above, according to the present invention, a sliding door provided on a car and having an arcuate cross section and operating along the arc to open and close an entrance / exit, and a drive device provided on the car, A first rotating body provided in the drive device and pivotally attached via a vertical shaft and arranged in contact with one of the front surface side and the back surface side of the sliding door; and a vertical rotary shaft provided in the drive device. A second rotating body that is pivotally mounted and arranged in contact with the other of the two to sandwich the sliding door with the first rotating body, and to rotate at least one of the first rotating body and the second rotating body provided in the drive device. And a transmission mechanism.

As a result, it is not necessary to install a door link for opening and closing the sliding door in the circular center portion of the car, and the space required for installation on the car is reduced. Then, another elevator device arranged above the car on the ceiling of the car can be easily provided. In addition, it is possible to secure a scaffold for maintenance work on the car, which has the effect of facilitating maintenance work.

Further, as described above, the present invention is provided with the adjusting mechanism for changing the mutual distance between the first rotating body and the second rotating body.

As a result, it is not necessary to install a door link or the like for opening and closing the sliding door in the circular center portion of the car, and the space required for installation on the car is reduced. Then, another elevator device arranged above the car on the ceiling of the car can be easily provided. In addition, it is possible to secure a scaffold for maintenance work on the car, which has the effect of facilitating maintenance work. Furthermore, the adjusting mechanism adjusts the distance between the first rotating body and the second rotating body to maintain the normal driving force of the sliding door, and also has the effect of improving work efficiency such as installation and maintenance.

Further, as described above, the present invention is provided with the rubbing tool for rubbing the first rotating body and the second rotating body.

As a result, it is not necessary to install a door link for opening and closing the sliding door in the circular center portion of the car, and the space required for installation on the car is reduced. Then, another elevator device arranged above the car on the ceiling of the car can be easily provided. In addition, it is possible to secure a scaffold for maintenance work on the car, which has the effect of facilitating maintenance work. Furthermore, since the rolling surfaces of the first rotating body and the second rotating body are cleaned by the sliding friction tool, the driving force due to the adhesion of dust is not impaired, the normal driving force of the sliding door can be maintained, and the maintenance management is facilitated. effective.

[Brief description of drawings]

FIG. 1 is a view showing a first embodiment of the present invention and is a cross-sectional plan view of an elevator device provided with a circular door device for an elevator.

FIG. 2 is an enlarged view showing a drive device portion of FIG. 1 with a part thereof cut away.

FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG.

4 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 5 is a view showing the second embodiment of the present invention and is an enlarged view corresponding to a portion C in FIG. 2 described above.

6 is a cross-sectional view taken along line DD of FIG.

FIG. 7 is a view corresponding to FIG. 5 described above and showing the third embodiment of the present invention.

FIG. 8 is a cross-sectional plan view of an elevator device showing a conventional circular door device for an elevator.

[Explanation of symbols]

2 baskets, 4 doorways, 5 sliding doors, 16 drive units,
26 first rotary body, 29 second rotary body, 31 transmission mechanism, 33 adjusting mechanism, 34 rubbing tool.

Claims (3)

[Claims] 1. A sliding door provided on a car, which has an arcuate cross section and operates along the arc to open and close an entrance / exit, a drive device provided on the car, and a vertical device provided on the drive device. A first rotating body pivotally attached via an axis and arranged in contact with either one of the front surface side and the back surface side of the sliding door;
A second rotary body that is provided in the drive device and is pivotally attached through a vertical shaft, is disposed in contact with the other of the both, and presses the sliding door by the first rotary body, and the second rotary body is provided in the drive device. Circular door device for an elevator, comprising a transmission mechanism for rotating at least one of the first rotating body and the second rotating body. 2. An adjusting mechanism for changing the mutual distance between the first rotating body and the second rotating body is provided.
Circular door device for elevator described. 3. The circular door device for an elevator according to claim 1, further comprising a rubbing tool for rubbing the first rotating body and the second rotating body.