JPH04129990A - Cage door device of elevator - Google Patents

Abstract

PURPOSE:To more surely prevent a noise generated in a cage during running by providing an expandable/contractable bas-shaped noise-insulating unit in at least either one of a lower end part of a cage door and a doorsill of the cage. CONSTITUTION:A bag-shaped noise-insulating unit 11, having a length almost equal to a door width further consisting of material, for instance, rubber of large thickness and metal-contained rubber or the like, is mounted to a lower end part of a cage door 4. When the cage door 14 is placed in or just before a fully closed condition by receiving a door closing command, fluid is introduced into the bag-shaped noiseinsulating unit 11 by a power device 12 to close a space A by expanding the bag-shaped noise-insulating unit 11. When a cage 3 is placed in stopping action by receiving a deceleration command, the bag- shaped noise-insulating unit 11 is contracted by its own contracting force or forcedly by the power device 12 to open/close the cage door 4 in a condition that the bag-shaped noise-insulating unit 11 is contracted.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an elevator car door device used, for example, in a high-speed elevator of 300x/min or more, and particularly relates to noise countermeasures within the car. .

[Prior Art] FIG. 3 is a schematic configuration diagram showing an example of a conventional high-speed elevator, FIG. 4 is a front view showing the lower end of the door in FIG. 3, and FIG.
The figure is a sectional view taken along the line V-■ in FIG. 4.

In the figure, each floor of the hoistway (1) has a landing door (2).
is provided. A car (3) that goes up and down in the hoistway (1)
) is provided with a car door (4) facing the landing door (2). This cage door (4) is the cage door (5)
It is designed to move back and forth on the top. A leg (4a) and a sound insulating plate (411) made of a steel plate are attached to the lower end of the door (4).

These legs (4a) and sound insulation board (4b) are connected to the door (4).
It reciprocates within the sill groove (5a) of the car sill (5) by opening and closing.

An upper air regulation cover (6a) is attached to the upper part of the car (3), and a lower air regulation cover (6b) is attached to the lower part of the car (3).

In the conventional high-speed elevator as described above, as the car (3) moves up and down, wind noise of a magnitude proportional to approximately the fifth power of the wind speed is generated in the hoistway (1). This wind noise enters the door (3) through the gap (A in the figure) between the lower end of the door (4) and the threshold (5) and becomes noise.

Therefore, in the car door device described above, a sound insulating plate (4b) is attached to the door (4) to prevent wind noise from entering the car (3).

In addition, for example, in an ultra-high speed electric heater of 300 rl/min or more, the air rectifying cover (6a), (6b
) to suppress wind noise to some extent, or by installing a basket (3
) Noise countermeasures have been taken, such as making the walls have a highly sound-insulating structure.

[Problems to be Solved by the Invention] In the conventional elevator car door device configured as described above, although a sound insulating plate (4b) is provided as a countermeasure against noise inside the car (3), Sound insulation board (4b
) is thin compared to the width of the sill groove (5a) (Fig. 5B), so wind noise enters the car (3) through the sound insulating plate (411), and the noise is not sufficiently prevented. There was a point.

This invention was made to solve the above-mentioned problems, and provides an elevator car door device that can more reliably prevent noise generated inside the car during running. The purpose is to

[Means for Solving the Problems] The elevator car door device according to the present invention includes a lower end of the car door and at least one of the car sill.
It is equipped with a bag-like sound insulator that can be expanded and contracted.

[Function] In this invention, while the car is being raised and lowered, fluid is introduced to expand the bag-like sound insulator to close the gap between the lower end of the car hair and the car sill, and to close the gap between the car door and the car door. When opening and closing the car door, the bag-like sound insulator is contracted to secure the gap necessary for opening and closing the car door.

[Example code] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing the lower end of a door device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIGS. The same reference numerals are given to the same or equivalent parts as those in the figures, and the explanation thereof will be omitted.

In the figure, a bag-shaped sound insulator (11) is attached to the lower end of the cage door (4) and has the same length as the cage door width and is made of a material such as thick rubber or metal-filled rubber. It is being This bag-shaped sound insulator (11) is normally contracted as shown by the dashed line in the figure, but when fluid such as air or liquid is introduced by the power generator (12) attached to the car door (4), This causes the car door (4) to expand.
> The gap (A) between the lower end of the cage and the car sill (5) is closed.

In the car door device configured as described above, when the car door (4) receives a door closing command and becomes fully closed,
Or just before that, the power generator (12)
1) Fluid is introduced into the interior to inflate the bag-like sound insulator (11) and close the gap (A>).

Further, when the car (3) receives a deceleration command and enters a stop operation, the bag-shaped sound insulating body (11) is forcibly contracted by the pouch power device (12) by its own contraction force.

In this way, the car door (4) is opened and closed with the bag-shaped sound insulator (11) contracted.

By the way, according to research, the wind noise caused by the vortex generated at the tip of the car sill (5) is extremely loud and has a frequency of 500Hz~
It consists of a frequency of 2kHz. Most of the intrusion of wind noise into the car (3) is from the gap (A), and compared to that, the intrusion from between the car door (4) and the car entrance pillar is much larger. small. Also, the gap (A
) to prevent wind noise from entering the basket (3), completely seal the gap (A>) or reduce the gap size to I
Unless it is made extremely narrow, it will have little effect.

On the other hand, in the above-mentioned car door device, the gap (A) can be sealed or made smaller than II by inflating the bag-like sound insulator (11) while the car (3) is going up and down. As a result, wind noise is effectively prevented from entering the car (3) through the gap (A), and the generation of noise inside the car (3) is more reliably prevented.

For example, Japanese Utility Model Application Publication No. 2175/1983 discloses a sealing piece that is swung by an electromagnet to open and close between the opening/closing door and the peripheral edge of the entrance/exit. . but,
Although sealing with such a predetermined shaped sealing piece can prevent wind from entering, it hardly prevents wind noise from entering due to its thickness, adhesion, etc. On the contrary,
The bag-shaped sound insulator (11) of the above embodiment has a sufficient thickness when expanded and is made of a flexible material that expands and contracts, so it has excellent adhesion and can effectively insulate wind noise.

- On the other hand, when the car (3) is stopped and the car door (4) is opened or closed, the bag-shaped sound insulator (1) is contracted, and the gap (A) is ), the size required to open and close the
That is, since the number is 5 to 61111, the car door (4) can be opened and closed smoothly. At this time, in the above embodiment, in order to secure the gap (A>), there is no need to move the bag-shaped sound insulator (11) itself, and it is simply contracted on the spot, so that the narrow space can be used efficiently. Ru.

In addition, the car (
The acceleration time of 3) and the deceleration time of the car (3) from the noise generation speed to the stop state are usually several seconds to
It takes about 10-odd seconds, and during that time, sufficient time can be secured for the expansion and contraction operations of the bag-shaped sound insulator (11).

In addition, in the above embodiment, the bag-shaped sound insulator (11) is attached to the car door (
4), but it may be provided on the side of the car sill 5), or on both sides, as long as it does not obstruct access to the car (3).

Further, the number, shape, material, etc. of the bag-like sound insulator (11) are not limited to those in the above embodiment.

Furthermore, the bag-shaped sound insulating body (11) is, for example, a car door (4)
You can directly screw it to the lower end of the car or the car sill (5) at several places, or embed it in the car sill (5) and hold it to prevent expansion.
It may be attached by exposing only the contracted portion, and the attachment method is not particularly limited.

Furthermore, as a method for expanding and deflating the bag-like sound insulator (11), for example, a pump such as a rotary pump is used as the power unit (12) to forcibly feed gas in a cylinder (not shown). There is a method in which the bag-shaped sound insulator (11) is inflated and gas is returned to the cylinder by the contraction force of the bag-shaped sound insulator (11) itself, or a method in which compressed gas is sent from the cylinder to inflate the bag-shaped sound insulator (11) and a pump is used. There is a method of deflating the bag-shaped sound insulator (11) by forcibly returning the gas to the cylinder, etc., and the method is not particularly limited.

Further, although a high-speed elevator was shown in the above embodiment, the present invention can also be applied to a normal elevator.

[Effects of the Invention] As explained above, the elevator car door device of the present invention includes a bag-like sound insulating body provided at least one of the lower end of the car door and the car sill, and the bag-like sound insulating body being inflated. By doing so, the gap between the lower end of the car door and the car sill is closed while the car is being raised or lowered, which has the effect of more reliably preventing noise generated inside the car while the car is running. play.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, FIG. 3 is a configuration diagram showing a conventional example, and FIG. Figure 3 is a front view of the main part, Figure 5 is the 4th
It is an arrow sectional view along the VV line of a figure. In the figure, (3) basket, (4) basket door, and (5)
The basket sill 11) is a bag-shaped sound insulator, and (A) is the gap. In each figure, the same reference numerals do not indicate the same or equivalent parts.

Claims (1)

[Claims] Provided on at least one of the lower end of the car door and the car sill, and expands when fluid is introduced while the car is going up and down, closing the gap between the lower end of the car door and the car sill. A car door device for an elevator, further comprising a bag-like sound insulator that contracts when the car door is opened and closed.