JP2605543B2 - Elevator cab - 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 cab, and more particularly to an elevator cab that reduces noise in the cab of an elevator running at a high speed of 300 m / min or more.

[0002]

2. Description of the Related Art As an elevator cab of this kind, FIG.
There is what was shown in. FIG. 3 is a longitudinal sectional view showing a cab of a conventional elevator. In the figure, reference numeral 1 denotes a cab wall of an elevator, 2 denotes a cab ceiling, 3 denotes a suspended ceiling attached to a lower portion of the cab ceiling 2, and 4 denotes a cab door provided at an entrance of a passenger. 5 is a floor plate having a plurality of through holes, 6
Is the bottom plate, 7a and 7b are the inner sides of the bottom of the cab, respectively.
A reinforcing member that forms a floor plate support beam and is attached to the outer edge side at a predetermined interval. The bottom plate 6 is provided with an interval of h dimension between the bottom plate 6 and the floor plate 5 via the reinforcing members 7a and 7b. Numeral 8 is a rug having air permeability laid on the upper part of the floor plate 5.

The cab of a conventional elevator is constructed as described above, and the noise that enters the cab echoes in the cab, but the noise that reaches the floor plate 5 passes through the rug 8 having air permeability. And is absorbed by the double floor portion composed of the floor plate 5 and the bottom plate 6. In addition, regarding the reduction of noise in the elevator car room, for example, Japanese Patent Application Laid-Open No.
The technology disclosed in Japanese Patent Publication No. 5 is disclosed. This publication discloses a technique for absorbing noise in a car room by using a space formed by a lighting cover and a ceiling to solve the problem of air column resonance in the car room.

[0004]

A conventional elevator cab is constructed as described above, and the frequency of the noise in the cab differs depending on the speed of the elevator and the cross-sectional area of the hoistway, so that the noise is absorbed. In order to do so, it is necessary to have a double floor structure having an optimum h dimension for each elevator every time construction is performed. Therefore, for each building, the noise characteristics are predicted in advance, and the basic structural parts of the elevator, that is, the floor plate 5, the bottom plate 6, the reinforcing members 7a, and the reinforcing members 7b are fixed in accordance with the noise. . However, since the h dimension is set based on the predicted noise, it is unlikely that the h dimension will be perfectly adapted to the condition after fixing, and it is also difficult to adjust the h dimension after fixing. Therefore, it has been difficult to obtain an optimum h-size double floor structure corresponding to the actual noise value.

Accordingly, an object of the present invention is to provide an elevator cab in which a floor structure corresponding to an actual noise value can be optimally and easily formed.

[0006]

According to the first aspect of the present invention, a car floor of an elevator cab supports a double floor structure in which a bottom plate is integrated with a floor plate having a plurality of holes at a predetermined distance from the floor plate. It is constructed between beams, and a rug having air permeability is laid on the upper part of the floorboard.

[0007] The car floor of the elevator cab according to the second aspect of the present invention has a plurality of holes, and a total area of the holes is 0.2 to 0.8 times the total plane area. A double floor structure in which a bottom plate is integrated at a distance is provided between floor plate support beams, and a rug having air permeability is laid on an upper portion of the floor plate.

[0008]

According to the first aspect of the present invention, the upper and lower spacing dimensions of the double floor structure required for absorbing noise of a specific frequency are set temporarily after actually confirming the noise value. Since the heavy floor structure is permanently installed, an optimum double floor structure can be easily formed.

According to the second aspect of the present invention, since the total area of the holes in the floorboard is 0.2 to 0.8 times the total plane area, an optimum sound absorbing effect is obtained, and the required floorboard is required. Strength is ensured.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a longitudinal sectional view showing a cab of an elevator according to an embodiment of the present invention, and FIG. 2 is an enlarged view showing the sound absorbing unit of FIG. In the drawing, the same reference numerals as those in FIG. 3 denote the same or corresponding parts as those of the related art.

In the drawing, reference numeral 9 denotes a sound absorbing unit in which a floor plate 10 made of a metal plate having a plurality of through holes and a bottom plate 11 made of a metal plate separated by a distance of h below this are integrally formed. A plurality of the sound absorbing units 9 are provided between the reinforcing members 7a and 7b, which are the floor plate supporting beams, inside the car floor having the thickness H of a fixed size to form a double floor structure. Is what you do. The floor plate 10 has a hole having a total area of 0.2 to 0.8 times the total plane area. 12 is a reinforcing member 7a and a reinforcing member 7
It is a protection plate attached to the lower part of b. 8 is the floor plate 1
This is a rug having air permeability laid on the upper part of the protective plate 12, and the H dimension described above is formed between the upper surface and the lower surface of the protective plate 12.

Next, the mounting of the double floor structure in the elevator cab of the embodiment constructed as described above will be described. In order to optimally absorb noise at different frequencies for each elevator depending on the traveling speed and the cross-sectional area of the hoistway, a sound absorbing unit 9 having several types of h dimensions is prepared in advance corresponding to the noise prediction of the elevator. Alternatively, the sound absorbing unit 9 having the optimum h dimension is manufactured based on the actual running results. Next, the sound absorbing unit 9 set to the optimum h dimension as described above is arranged and fixed between the reinforcing members 7a and 7b by retrofitting.

As described above, the elevator cab of the above embodiment has a plurality of holes, and the total area of the holes is 0.2 to 0.8 times the total plane area of the floor plate 10 at a predetermined distance. The sound absorbing unit 9 which is a double floor structure in which the bottom plate 11 is integrated with the floor member 11 is separated from the reinforcing member 7a and the reinforcing member 7 which are floor plate supporting beams.
b, and a rug 8 having air permeability is laid on the upper part of the floor plate 10. Therefore, according to the above embodiment, the sound absorbing unit 9 is permanently installed after the interval dimension h of the sound absorbing unit 9 necessary for absorbing the noise of the specific frequency is set by actually confirming the noise value by temporary provision. From
An optimal double floor structure can be formed easily and economically. Moreover, the total area of the holes in the floor plate 10 is 0.2
Since the ratio is doubled to 0.8 times, the optimum sound absorbing effect can be secured, and the required strength of the floor panel 10 can be secured. The above embodiment corresponds to the aspect of claim 2, but may correspond to the aspect of claim 1.

By the way, the sound absorbing unit 9 of the above embodiment
Although the distance between the floor plate 10 and the bottom plate 11 is a constant h dimension, the present invention is not limited to this, and the distance between the floor plate 10 and the bottom plate 11 is May be different. In this case, a more suitable sound absorbing unit 9 corresponding to the noise distribution state can be obtained.

In the above embodiment, the sound absorbing unit 9 which is optimized in advance includes a reinforcing member 7a and a reinforcing member 7b.
However, the present invention is not limited to this, and may be a structure that is integrated over the entire floor surface. Further, the bottom plate 11 of the sound absorbing unit 9 of the above embodiment.
Is a metal plate, but since a load is not particularly applied to this portion except for a joint portion with the floor plate 10 and a mounting portion on the reinforcing member 7a and the reinforcing member 7b, a material excellent in sound absorbing characteristics is arbitrarily selected. Can be selected.

[0016]

As described above, the car floor in the cab of the elevator according to the first aspect of the present invention supports a double floor structure in which a bottom plate is integrated with a floor plate having a plurality of holes at a predetermined distance from the floor plate. It is constructed between beams, and a rug having air permeability is laid on the upper part of the floorboard. Therefore, the interval between the double floor structures required to absorb the noise of a specific frequency is set temporarily after actually confirming the noise value, and then the double floor structure is fixed. Can be simply and economically formed.

Further, the car floor in the cab of the elevator according to the present invention has a plurality of holes, and the total area of the holes is 0.2 to 0.8 times the total plane area. Since a double floor structure in which the bottom plate is integrated at a predetermined distance is laid between the floor plate support beams and a rug having air permeability is laid on the upper portion of the floor plate, it is particularly possible to obtain an optimum sound absorbing effect. And required strength as a floorboard can be secured.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a cab of an elevator according to an embodiment of the present invention.

FIG. 2 is an enlarged view showing the sound absorbing unit of FIG.

FIG. 3 is a longitudinal sectional view showing a cab of a conventional elevator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Car room wall 2 Car room ceiling 7a, 7b Reinforcement member 8 Rug 9 Sound absorption unit 10 Floor plate 11 Bottom plate

Claims (2)

(57) [Claims] 1. An elevator cab comprising a cab wall, a cab ceiling, a cab door and a cab floor provided at a passenger entrance and exit, wherein the cab floor is a plurality of cab floors supported on floor plate support beams. A double floor structure in which a floor plate having a hole and a bottom plate arranged between the floor plate support beams are integrated at a predetermined distance, and a rug having air permeability placed on an upper portion of the floor plate. Elevator cab featured. 2. An elevator cab comprising a cab wall, a cab ceiling, a cab door and a cab floor provided at an entrance of a passenger, wherein the cab floor comprises a plurality of cab floors supported on floor plate support beams. A double floor structure in which a floor plate having a hole and a total area of the hole is 0.2 to 0.8 times the total plane area and a bottom plate disposed between the floor plate support beams are integrated at a predetermined distance. A cab for an elevator, comprising: a body; and a permeable rug placed on an upper portion of the floorboard.