JP2001322783A - Door device for elevator car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a door device for an elevator car eliminating a part for a hand not to reach at maintenance/inspection time to be safe and easy for maintenance inspection. SOLUTION: This door device for an elevator car, comprising a door for the car supported to a door frame mounted in a car main unit to be movable along the door frame between a closed position closing a gate of the car and an opened position opening the gate of the car, a door driving gear driving the door of the car between the closed/opened positions, and a door frame guide supporter supporting to guide the door frame with the door of the car and the door driving gear so as to be movable in a horizontal or vertical direction relating to the car manually or with power between an operating position capable of ordinary operation and a maintenance/inspection position capable of maintenance/inspection work, can move a part for a hand not to reach from on the car or a landing in the ordinary operation position to the part in a position for a hand to reach in the maintenance/inspection position. A door frame driving gear may be provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator car door device, and more particularly to a direct drive type elevator car door device.

[0002]

2. Description of the Related Art A conventional direct drive type elevator car door device described in Japanese Patent Publication No. 7-102953 discloses a door hanger connected to a door hanger via a speed reducer by a door motor provided on an upper spar of a car. The door is opened and closed by driving the driven belt, and the height of the car door device can be suppressed within the height of the drive belt. In the conventional elevator car door device described in Japanese Patent Application Laid-Open No. 2-81888, a door motor is mounted on a door frame fixed to the car, and the height of the car door device is set to be substantially the same as the drive belt. Can be suppressed. In these elevator devices, the height of the car ceiling is limited because the door motor is disposed above the car ceiling.

The elevator car door apparatus shown in FIGS. 11 and 12 is disclosed in Japanese Patent Application No. 11-12345, and has a door motor attached to a door frame with a reduced axial dimension. Is placed on the side of the car so that the height of the car ceiling can be higher than that of the car door device. That is, in these figures, a car ceiling 3 is provided above the car doorway 2 of the car body 1, and extends above the car doorway 2 along the frontage direction (width direction) of the car doorway 2. The door frame 4 is fixed by a support member 5. Further, on the door frame 4, two car doors 6 that can move along the door frame 4 between a closed position for closing the car doorway 2 and an open position for opening the car doorway 2, and are attached to the door frame 4. And a door driving device 7 for driving the car door 6 between the closed position and the open position.

A door rail 8 is provided on the door frame 4 horizontally in the longitudinal direction of the door frame 4, and a roller 10 provided on an upper end of a door hanger 9 fixed to a car door 6 rides on the door rail 8. The two car doors 6 are guided by the door rails 8 along the door frame 4 and move in the horizontal direction to be in the open position or the closed position. The door driving device 7 includes a door motor 11 provided at one longitudinal end of the door frame 4 and a door motor 1.
1, a driven pulley 13 provided at the other longitudinal end of the door frame 4 and corresponding to the drive pulley 12, and a door belt 14 such as a V belt wound around the pulleys 12 and 13. When,
One end is connected to the upper traveling portion 15 of the door belt 14, the other end is connected to the upper end of the right side door hanger 9 in FIG. 11, and a belt gripper 16 is connected to the lower traveling portion 17 of the door belt 14. Has a belt gripper 18 connected to the upper end of the right door hanger 9 in FIG.

If the door motor 11 is rotated counterclockwise in FIG. 11 when the car door 6 is in the closed position as shown in FIG. 11, the drive pulley 12 causes the door belt 14 and the driven pulley 13 to rotate counterclockwise. The left car door 6 in FIG. 1 that is driven and connected to the upper traveling unit 15 by the door grip 16 is moved to the left, and the right car door in FIG. 6 is moved to the right, the car door 6 moves to the open position and the car doorway 2 is opened.

In such an elevator car door device, the door drive device 7 including the door motor 11 is miniaturized and mounted so as not to protrude from the door frame 3. Located in the department. Therefore, as shown in FIGS. 11 and 12, the height of the car ceiling 3 can be made higher than the car door device by an arbitrary height H regardless of the height of the car door device.

[0007]

In an elevator apparatus using an elevator car door apparatus as shown in FIGS. 11 and 12, when maintenance and inspection of the car door apparatus is required, an operator is required to take a car. The hand can be extended downward from above the ceiling 3 to perform work on the elevator car door device. However, in such an elevator apparatus employing the elevator car door apparatus, the car ceiling 3 is
One of the great advantages is that it can be raised as shown in
Due to the height H, there is also a disadvantage that a worker's hand extending downward from the car ceiling 3 at the same time does not reach a part to be worked.

On the other hand, regardless of the height H of the car ceiling 3 above the door device, when the worker extends the hand from the entrance to perform maintenance and inspection, the opening of the entrance (three-way) The part outside in the lateral direction than the frame) was inaccessible and maintenance and inspection was extremely difficult.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems of the conventional elevator car door device, and to ensure that there is no part that cannot be reached during maintenance and inspection, and that maintenance and inspection are easy. To get the elevator car door device.

[0010]

According to the present invention, means for solving the above-mentioned problems are as follows. (1) A door frame attached to the car main body above the car doorway and extending along the frontage direction of the car doorway, a closed position for closing the car doorway supported by the doorframe, and an opening for opening the car doorway. A car door capable of moving along the door frame between positions, a door driving device attached to the door frame to drive the car door between the closed position and the open position, and the door frame. With the car door and the door drive,
A door frame guide and support device for guiding and supporting the car so as to be able to move with respect to the car between an operation position where normal operation is possible and a maintenance / inspection position where maintenance / inspection work is possible; An elevator car door device wherein, when present, an unreachable part on the car or from the landing in the normal operation position is moved to a position where it can be reached.

(2) A door frame driving device is provided between the car and the door frame, and moves the door frame with respect to the car between the normal operation position and the maintenance inspection position. You may.

(3) The door frame guide and support device includes:
A guide member attached to the car for guiding the door frame in a horizontal direction may be provided, and the normal operation position and the maintenance inspection position may be horizontally separated from each other so that the door frame can be moved horizontally. .

(4) The circulating body circulatingly connected to the car door so as to be detachably connected to the car door, and connected to the circulating body to open and close the car door when driven. A door motor, and the door frame driving device includes a connection member that connects the circulating body to the car in a state where the connection between the car door and the circulating body is disconnected, and the door motor is driven. The door frame may be moved horizontally between the normal operation position and the maintenance and inspection position when the door frame is moved.

(5) The door frame guide and support device includes:
A guide member attached to the car and guiding the door frame in the vertical direction may be provided, and the normal operation position and the maintenance inspection position are vertically separated from each other, and the door frame may be vertically moved. .

(6) The door driving device is connected to a circulating body that is connected to and releasable from the car door and circulates,
A door motor that opens and closes the car door when driven, wherein the door frame driving device moves along the guide member fixed to the car door, and a rotating member that moves the rotating member to the door motor. And a detachable rotation transmitting member connected to the door frame, and the door frame may be moved in a vertical direction when the door motor is driven.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 to 3 show an embodiment of an elevator car door device according to the present invention. In these figures, a car ceiling 3 is provided above a car doorway 2 of a car body 1, and a door extending above the car doorway 2 along the frontage direction (width direction) of the car doorway 2. A frame 4 is provided. According to the present invention, the door frame 4 is guided and supported so as to be movable with respect to the car 1 by a door frame guide and support device 21 described in detail later. Further, on the door frame 4, two car doors 6 that can move along the door frame 4 between a closed position for closing the car doorway 2 and an open position for opening the car doorway 2, and are attached to the door frame 4. And a door driving device 7 for driving the car door 6 between the closed position and the open position.

A door rail 8 is provided on the door frame 4 horizontally in the longitudinal direction of the door frame 4, and a roller 10 provided on an upper end portion of a door hanger 9 fixed to the car door 6 rides thereon. The two car doors 6 are guided by the door rails 8 along the door frame 4 and move in the horizontal direction to be in the open position or the closed position. The door driving device 7 includes a door motor 11 provided at one longitudinal end of the door frame 4 and a door motor 1.
1, a driven pulley 13 provided at the other longitudinal end of the door frame 4 and corresponding to the drive pulley 12, and a door belt 14 such as a V belt wound around the pulleys 12 and 13. When,
One end is connected to the upper running portion 15 of the door belt 14, the other end is connected to the upper end of the door hanger 9 on the right side in FIG. 1, and one end is connected to the lower running portion 1 of the door belt 14.
7 and a belt grip 18 having the other end connected to the upper end of the door hanger 9 on the right side in FIG.

The configuration described above is similar to that shown in FIGS.
The door frame 4 is guided and supported by a door frame guide and support device 21 so as to be movable with respect to the car 1. The door frame guide support device 21 is fixed to the support member 22 (FIG. 2) protruding from the front wall above the car doorway 2 of the car 1 in the example shown in FIG. And a guide member 23 extending along the cross-sectional shape thereof. The guide member 23 is bent in a substantially U shape so as to surround both side edges of the door frame 4 at both ends.
In this way, the door frame 4 can be moved together with the car door 6 and the door driving device 7 in the horizontal direction with respect to the car 1 between an operation position where normal operation is possible and a maintenance inspection position where maintenance and inspection work is possible. It is guided and supported.

If the door motor 11 is rotated counterclockwise in FIG. 1 when the car door 6 is in the closed position as shown in FIG. 1, the drive pulley 12 causes the door belt 14 and the driven pulley 13 to rotate in the counterclockwise direction. Driven, upper traveling part 1
The door 6 of the left car in FIG. 1 connected to the door grip 5 by the door grip 16 is moved to the left, and the lower traveling part 17 door grip 18
1, the car door 6 on the right side in FIG. 1 is moved to the right, the car door 6 moves to the open position, and the car doorway 2 is opened.

When maintenance and inspection of the elevator car door device is required, the car 1 is placed at a position where the car door device of the car 1 is exposed to the landing side from the entrance (three-sided frame) of the landing.
Is stopped, and a worker extends his hand from the entrance of the platform to perform maintenance and inspection. The central portion of the elevator car door device is easily accessible from the entrance, but the portion outside in the lateral direction from the opening of the landing entrance (three-sided frame) is not reachable, making maintenance and inspection extremely difficult.

In this case, in the elevator car door apparatus of the present invention, the entire car door apparatus including the door frame 4, the door driving device 7, the door 6 and the like is moved to the door frame guide support device 21, that is, in the car 1. On the other hand, it can be manually slid and moved to a maintenance and inspection position where maintenance and inspection work can be performed as shown in FIG. In FIG. 3, the door device is moved to the left with respect to the car 1, and the door motor 11 and the drive pulley 12, which are outside the landing entrance in the normal operation position shown in FIG. In the normal operating position, parts that are out of reach from the landing are moved to a position that is accessible, so that maintenance and inspection of these parts can be easily performed. It is understood that it is possible. When the maintenance and inspection at the position shown in FIG. 3 is completed, the door frame 4 is slid to the right on the door frame guide and support device 21 to move the driven pulley 13 and the like into the entrance of the landing to perform the maintenance and inspection work.

Embodiment 2 FIG. In the embodiment shown in FIGS. 4 to 7, the door frame 4 can be moved between the normal operation position and the maintenance / inspection work position by the driving force of the door motor 11 without manually operating the car 1. A door frame drive 24 is provided. That is, the door frame 4 is provided with a slit 25 which is long in the horizontal direction, that is, in the longitudinal direction, and a driving post 26 as shown in FIGS. One end of the drive post 26 is firmly fixed to the wall of the car 1 and extends through the slit 25. Drive post 26
A first arm 27 extending upwardly therefrom and connected to the door drive belt 14, a second arm 28 extending rightward in FIG. 4 and connected to the belt gripper 18, and a leftward arm in FIG. A third arm 29 that can extend and be connected to the belt gripper 16. Other configurations are the same as those of the elevator car door device shown in FIGS. 1 to 3.

During normal operation, the first arm 27 of the drive post 26 is not connected to the door belt 14, and the second and third arms 28 and 29 also have their respective belt grips 1
Not linked to 8 and 16. Therefore, the elevator car door device can perform a normal opening and closing operation regardless of the presence of the drive post 26.

When the door device is moved horizontally from the normal operation position to the maintenance and inspection position for performing the maintenance and inspection work, the belt grippers 16 and 18 and the door belt 1 are moved.
4 and the first arm 27 of the drive post 26 is connected to the door belt 14, and the second and third arms 28 and 29 are also connected to the respective belt grippers 18 and 16. As a result, the door grips 16 and 18 and thus the door 6 and the door belt 14 are integrated, and the door motor 11
When the door belt 14 is driven counterclockwise in FIG. 4, for example, the drive post 26 and the door 6 cannot move.
The door belt 14, the pulleys 12, 13, the door motor 11, and the door frame 4 receive the reaction force and slide against the door frame guide and support device 21 to be driven in the horizontal direction.
Move to the maintenance and inspection work position shown in. Door motor 1
When the door 1 is driven in the clockwise direction, the door device moves to the maintenance / inspection work position in the right direction in FIG.

Embodiment 3 In the embodiment shown in FIGS. 8 and 9, the door frame 4 can be moved between the normal operation position and the maintenance work position in the vertical direction, not in the horizontal direction, with respect to the car 1. That is, a door frame guide and support device 31 for guiding and supporting the door frame 4
However, in the illustrated example, a rack 32 fixed to a front wall above the car entrance 2 of the car 1 and a pair of pinions 33 attached to the door frame 4 and moved up and down along the rack 32.
And a manual driving device 34 such as a worm gear for driving the pinion 33 and preventing reverse rotation. Other configurations are the same as those of the elevator car door device shown in FIGS. 1 to 3.

When the door device is moved vertically from the normal operation position to the maintenance / inspection position for performing the maintenance / inspection operation, the manual drive unit 34 is driven at the position shown in FIG. As a result, the door frame 4 is raised together with the door 6 along the rack 32 and moved to the maintenance and inspection work position shown in FIG. In this position, the worker on the car ceiling 8 can reach the hand and easily perform the maintenance and inspection work. If the manual driving device 34 is driven in the reverse direction, the door device can be returned to the normal operation position in FIG. 8 again.

Embodiment 4 In the embodiment shown in FIG. 10, the door motor 11 and the driving device 34 are releasably connected by a transmission member such as a belt 35 so that the driving device 34 can be driven by using the door motor 11 instead of manually. A frame drive 36 is provided. Other configurations are the same as those of the elevator car door device shown in FIGS. 1 to 3.

During normal operation, the belt 35 is
The normal operation is performed while the driving force of the door motor 11 is not transmitted to the driving device 34 by removing or loosening from the driving motor 4. When the door device is moved vertically from the normal operation position to the maintenance and inspection position for performing the maintenance and inspection work, the belt 35 is connected to the door motor 11 and the driving device 34.
And the door belt 14 and the belt grippers 16 and 18 are disengaged. In this state, the driving device 34 is driven by the door motor 11 and the door frame 4 is moved along the rack 32 by the pinion 33 to the door 6.
And move it to the maintenance and inspection work position.
If the manual driving device 34 is driven in the reverse direction, the door device can be returned to the normal operation position in FIG. 10 again.

[0029]

As described above, the effects of the elevator hoist of the present invention are as follows. (1) A door frame attached to the car main body above the car doorway and extending along the frontage direction of the car doorway, a closed position for closing the car doorway supported by the doorframe, and an opening for opening the car doorway. A car door capable of moving along the door frame between positions, a door driving device attached to the door frame to drive the car door between the closed position and the open position, and the door frame. With the car door and the door drive,
A door frame guide and support device for guiding and supporting the car so as to be able to move with respect to the car between an operation position where normal operation is possible and a maintenance / inspection position where maintenance / inspection work is possible; When in the normal operation position, parts that are not reachable from the car or from the landing in the normal operation position are moved to a position that can be reached. The elevator car door device can be obtained easily.

(2) A door frame driving device is provided between the car and the door frame, and moves the door frame with respect to the car between the normal operation position and the maintenance inspection position. Therefore, it is possible to obtain an elevator car door device which can be easily maintained and inspected by moving the door device by the driving device so that there is no part that cannot be reached during the maintenance and inspection.

(3) The door frame guide and support device is
A guide member attached to the car for guiding the door frame in a horizontal direction, the normal operation position and the maintenance inspection position are horizontally separated from each other, and the door frame can be moved horizontally. In the operation position, the part outside the landing entrance can be moved to the inside of the landing entrance in the maintenance inspection position, so that maintenance and inspection can be performed easily.

(4) The door driving device is connected to and removably connected to the car door and circulates, and is connected to the circulator to open and close the car door when driven. A door motor, and the door frame driving device includes a connection member that connects the circulating body to the car in a state where the connection between the car door and the circulating body is disconnected, and the door motor is driven. The door frame can be moved in the horizontal direction between the normal operation position and the maintenance and inspection position when the door is opened, so that the portion outside the landing entrance in the normal operation position extends to the inside of the landing entrance in the maintenance and inspection position. Can be moved for easy maintenance and inspection

(5) The door frame guide and support device is as follows:
A guide member attached to the car to guide the door frame in a vertical direction, the normal operation position and the maintenance inspection position are vertically separated from each other, and the door frame can be vertically moved; The worker on the ceiling can easily reach for the maintenance and inspection work.

(6) The door driving device is connected to a circulating body that is connected to and removably connected to the car door and circulates,
A door motor that opens and closes the car door when driven, wherein the door frame driving device moves along the guide member fixed to the car door, and a rotating member that moves the rotating member to the door motor. And a detachable rotation transmitting member that is connected to the door frame, and moves the door frame vertically when the door motor is driven, so that a worker on the car ceiling can reach for maintenance and inspection work. Can be easily executed, and the door frame can be moved using power.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an elevator car door device of the present invention in a normal operation position.

FIG. 2 is a schematic side view of the elevator car door device of FIG.

FIG. 3 is a schematic front view showing the elevator car door device of FIG. 1 in a maintenance and inspection work position.

FIG. 4 is a schematic front view showing an elevator car door device according to another embodiment of the present invention in a normal operation position.

5 is a schematic side view of the elevator car door device of FIG.

6 is a schematic cross-sectional view of the elevator car door device taken along line VI-VI in FIG.

FIG. 7 is a schematic front view showing the elevator car door device of FIG. 4 in a maintenance and inspection work position.

FIG. 8 is a schematic front view showing an elevator car door device according to another embodiment of the present invention in a normal operation position.

FIG. 9 is a schematic front view showing the elevator car door device of FIG. 8 in a maintenance and inspection work position.

FIG. 10 is a schematic front view showing an elevator car door device according to another embodiment of the present invention in a normal operation position.

FIG. 11 is a schematic front view showing a conventional elevator car door device.

FIG. 12 is a schematic side view of the elevator car door device of FIG. 11;

[Explanation of symbols]

1 car, 2 car doorway, 4 door frame, 6 car door, 7 door drive, 11 door motor, 14
Circulating body (drive belt), 16, 17 Connecting member (belt grip), 21 door frame guide and support device, 23 guide member, 24 door frame drive device, 32 guide member (rack), 33 rotating member (pinion), 35 rotation Transmission member (belt).

Claims (6)

[Claims] A door frame attached to the car body above the car doorway and extending along the frontage direction of the car doorway; and a closed position for closing the car doorway supported by the doorframe and the car doorway. A car door movable along the door frame between open and open positions; a door drive attached to the door frame for driving the car door between the closed position and the open position; A door frame guide support that guides and supports the frame together with the car door and the door driving device so that the frame can be moved with respect to the car between an operation position where normal operation is possible and a maintenance inspection position where maintenance and inspection work is possible. When the door frame is in the maintenance inspection position,
An elevator car door device wherein a part that is not accessible from the car or from the landing in the normal operation position is moved to a position that can be reached. 2. A door frame driving device which is provided between the car and the door frame, and moves the door frame with respect to the car between the normal operation position and the maintenance inspection position. Item 2. The elevator car door device according to item 1. 3. The door frame guide and support device includes a guide member attached to the car for guiding the door frame in a horizontal direction, wherein the normal operation position and the maintenance inspection position are horizontally separated from each other. 3. The elevator car door device according to claim 1, wherein the door frame can be moved horizontally. 4. A circulating body, wherein the door driving device is movably connected to the car door for removably connecting and circulating, and a door motor connected to the circulating body for opening and closing the car door when driven. In the state in which the door frame driving device has disconnected the connection between the car door and the circulating body,
A connection member for connecting the circulating body to the car, wherein the door frame can be moved horizontally between the normal operation position and the maintenance inspection position when the door motor is driven. An elevator car door device according to any one of the preceding claims. 5. The door frame guide and support device includes a guide member attached to the car for vertically guiding the door frame, wherein the normal operation position and the maintenance inspection position are vertically separated. 3. The elevator car door device according to claim 1, wherein the door frame can be moved vertically. 6. A door motor, comprising: a door motor connected to a circulating body which is removably connected to the car door and circulates therethrough to open and close the car door when driven. A frame driving device includes a rotating member that moves along the guide member fixed to the car door, and a detachable rotation transmitting member that connects the rotating member to the door motor, and the door motor is driven. 4. The door frame is moved in a vertical direction when the door frame is moved.
An elevator car door device according to any one of the preceding claims.