JP2000211859A - Elevator door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the structure, and reduce the space and cost by horizontally arranging the side connected to an elevator door of a rope or chain, turning it at the end of the elevator door device, and vertically arranging the side connected to an elastic body on the side of the elevator door device. SOLUTION: The tensile force of a spring 1 is changed from vertically to horizontally by a pulley 5 to transmit a closing force to a door 15 through a bracket 2. The closing force transmitted to the door 15 is transmitted to an interlocking rope 11 to transmit the closing force to a door 16 through a rope grasping bracket 9. According to this, the doors 15, 16 can be automatically closed as long as no external force such as an opening directional drive by a door device acts on. Since the spring 1 is vertically set on the side of the door device, and its dead weight vertically acts, it never protrudes out of the setting space. Further, since the tensile force regularly acts on the spring 1 to minimize the vibration, a guide device is dispensed with.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a door device.

[0002]

2. Description of the Related Art FIGS. 2 and 3 show the construction of an elevator door device provided with a conventional automatic closing device. 2 and 3 show the configuration of the landing-side door.

In FIG. 2, a spring 1 is arranged horizontally above an entrance. One end of the spring 1 is connected to the door hangers 6 and 7 at the upper portions of the doors 15 and 16 via the bracket 2, and the door hanger 6 has a hanger roller 10. It is movable on a door rail 14 provided in a horizontal direction. The other end of the spring 1 is connected to the rail frame 17 via a spring bracket 19.

The door hanger 6 is connected to an interlocking rope 11 via a rope gripping bracket 8. Door 1
A door hanger 7 for suspending the rope 6 is connected to an interlocking rope 11 via a rope gripping bracket 9.

The rope 11 is hung on an interlocking pulley 12 and an interlocking pulley 13 provided on a rail frame 17, and
5 and the door 16 are linked in the horizontal direction.

An automatic closing device that applies a door closing force to the doors 15 and 16 at the time of a power failure or the like is provided by a door 1
Is a device that closes the door 16 that is linked with the door 15. As a configuration of such a door device, for example,
There is one disclosed in 5-1774.

In FIG. 3, a rope 4 is disposed horizontally above an entrance. One end of the rope 4 is connected to the door hanger 6 at the upper part of the door 15 via the bracket 2,
The door hanger 6 has a hanger roller 10. With the hanger roller 10, the door 15 and the door hanger 6 can move on a door rail 14 provided on a rail frame 17 in a horizontal direction. The other end of the rope 4 is vertically turned by a pulley 5 provided at the upper end of the door device, and is connected to a weight 20. The weight 20 is guided by a weight guide 21 to move vertically.

The door hanger 6 is connected to an interlocking rope 11 via a rope gripping bracket 8. Door 1
A door hanger 7 for suspending the rope 6 is connected to an interlocking rope 11 via a rope gripping bracket 9.

The linking rope 11 is hung on a linking pulley 12 and a linking pulley 13 provided on a rail frame 17.
The door 15 and the door 16 are linked in the horizontal direction.

An automatic closing device that applies a door closing force to the doors 15 and 16 at the time of a power failure or the like is a device that closes the door 15 by gravity acting on the weight 20 and closes the door 16 interlocked with the door 15.

As a structure of such a door device, for example, there is one disclosed in Japanese Patent Application Laid-Open No. 55-27321.

[0012]

In the configuration shown in FIG. 2 described above, the spring length becomes long when the frontage of the entrance is large, and the spring 1 hangs down in an arc shape by its own weight. Required and costly. The spring force is desirably minimized in consideration of the power when the door is driven in the opening direction by the door driving device and the force when the door is manually opened in an emergency. It is necessary to have a structure in which there is no moving noise and the frictional force does not fluctuate. Further, since the spring 1 is located above the entrance and the position of the spring is close to the passenger's head, the passenger can hear the spring noise accompanying the swing of the spring 1 and see the spring 1 when the doors 15 and 16 are opened. May give low-grade images to passengers.

In the configuration shown in FIG. 3 described above, the weight guide 21 for preventing the weight 20 from swaying so that the weight 20 does not shake due to the opening / closing operation, an earthquake, or the like, and does not damage the surrounding equipment or the like. It is necessary and costly. Further, a guide 21 is provided beside the door device.
Space is required. Considering the power when driving in the opening direction by the door driving device and the force when manually opening the door in an emergency, the guide 21 has a frictional force as small as possible,
It is necessary to have a structure in which the sliding noise is small and the frictional force does not fluctuate.

An object of the present invention is to be able to cope with an elevator door having a large opening dimension of an entrance and exit, and to have a relatively simple structure.
It is an object of the present invention to provide a door device having an automatic closing device with a small space, low cost, and high quality design.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An elevator door device according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a door device according to the present invention.
The symbols used in FIG. 1 are all the same as those of the apparatus shown in FIGS. 2 and 3 described in the conventional embodiment.

In FIG. 1, the rope 4 is disposed horizontally above the entrance. One end of the rope 4 is connected to the door hanger 6 at the upper part of the door 15 via the bracket 2,
The door hanger 6 has a hanger roller 10. With the hanger roller 10, the door 15 and the door hanger 6 can move on a door rail 14 provided on a rail frame 17 in a horizontal direction. The other end of the rope 4 is vertically turned by a pulley 5 provided at an upper end of the door device, and is connected to one end of the spring 1. The other end of the spring 1 is connected via a spring bracket 3 to a sill 18 which is a structural part of the door device.

The door hanger 6 is connected to an interlocking rope 11 via a rope gripping bracket 8. Door 1
A door hanger 7 for suspending the rope 6 is connected to an interlocking rope 11 via a rope gripping bracket 9.

The interlocking rope 11 is hung on the interlocking pulley 12 and the interlocking pulley 13 provided on the rail frame 17.
The door 15 and the door 16 are linked in the horizontal direction.

In this door device, the force is always urged in the closing direction by the tensile force of the spring 1. The pulling force of the spring 1 is transmitted to the rope 4 connected to the spring 1, and the pulley 5 changes the vertical force to the horizontal direction, and the door 1
5, the door closing force is transmitted. The closing force transmitted to the door 15 is transmitted to the interlocking rope 11 via the rope gripping bracket 8.
To the door 16 via the rope gripping bracket 9.
Is transmitted to the door. As a result, the doors 15 and 16 are automatically closed unless external force such as being driven by the door device in the opening direction acts on the doors 15 and 16 by constantly applying the door closing force to the doors 15 and 16. be able to.

The spring 1 is installed vertically beside the door device,
Since the weight of the spring 1 acts in the vertical direction, the spring 1 basically does not protrude out of the installation space of the spring 1, and furthermore, the spring 1 is constantly subjected to a tensile force. Is very small, so that no guide device is required, and the cost and space are low. Further, since the spring 1 is sufficiently lighter than the weight, even if the spring 1 swings due to an earthquake or the like, the surrounding equipment will not be damaged.

Although not shown, a shaft such as a round bar may be used instead of the pulley 5.

Further, a chain may be used instead of the rope 4 and a sprocket may be used instead of the pulley 5 for chain drive.

[0024]

According to the door device of the present invention, it is possible to cope with an elevator door having a large opening width of an entrance, a relatively simple structure, a low cost, and a high-quality automatic closing with high design. The device can be realized.

[Brief description of the drawings]

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

FIG. 2 is a front view of a door device provided with a conventional automatic closing device.

FIG. 3 is a front view of a door device provided with a conventional automatic closing device.

[Explanation of symbols]

1 ... spring, 2 ... bracket, 3 ... spring bracket, 4 ...
Rope, 5 ... pulley, 6, 7 ... door hanger, 8, 9 ... rope gripping bracket, 10 ... hanger roller, 11 ... interlocking rope, 12, 13 ... interlocking pulley, 14 ... door rail, 15, 16 ... door, 17 ... Rail frame, 18 ... sill,
19: Spring bracket, 20: Weight, 21: Weight guide.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ichiro Nakamura 1070 Ma, Hitachinaka City, Ibaraki Prefecture Inside the Mito Plant of Hitachi, Ltd. (72) Inventor Shigeto Kojima 2477 Takaba, Hitachinaka City, Ibaraki Hitachi, Ltd. F term in car engineering (reference) 3F307 AA02 CB19

Claims (3)

[Claims] An elevator door provided at an entrance of an elevator car; a door rail for guiding an upper portion of the elevator door in a horizontal direction; and an elevator door provided at an upper portion of the elevator door, suspending the elevator door on the door rail, A door hanger having a roller that rolls on a door rail so that the elevator door moves along the door rail, and a door driving device that drives the elevator door so that the elevator door and the door hanger move along the door rail. In an elevator apparatus having one end to an elevator door, the other end using a rope or a chain connected to an elastic body that gives a door closing force, the rope or the chain is arranged horizontally connected to the elevator door, Change the direction at the end of the elevator door device, and Placed vertically Tadoa device aside, elevator door device, characterized in that the elastic body equipped with an automatic closure device arranged in the door device aside. 2. The elevator door device according to claim 1, wherein a helical spring is used as the elastic body that applies the door closing force. 3. The elevator door apparatus according to claim 1, wherein rubber is used as an elastic body for applying a door closing force.