JPS605516B2 - elevator car - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to measures for preventing wind noise in an elevator car, and provides an elevator car structure that is simple in structure and highly effective in preventing wind noise.

In high-speed elevators, when a car runs at high speed in a hoistway, vortex noise is generated around the car due to turbulent air flow, which causes a large amount of noise to the car. Conventionally, as a measure to prevent such swirl noise, a car 1 suspended from a rope 2 as shown in Fig. 1 or 2 has been used.
An inclined guide plate 3 or an arcuate rectifying plate 4 is provided at the upper and lower portions of the tube, which is effective.

However, in order to avoid interference with the various devices installed on the top of the car, or to enhance the rectification effect, the rectifier as described above has a relatively complicated shape and requires a lot of cost to manufacture and assemble. However, it also has the disadvantage that it impedes work on the upper and lower parts of the elevator car for maintenance and inspection.

In order to solve the above-mentioned drawbacks and to provide an elevator car with a high effect of reducing swirl noise, the present invention is provided with simple hoods that temporarily catch airflow above and below the car.

An embodiment of the present invention will be described below with reference to FIG.

In the figure, 5 is the upper beam, 6 is the lower beam, 7 is the upper hood that is supported and installed from the upper beam 5 to the pillar 8, 9 is the lower hood that is supported and installed from the lower beam 6 to the pillar 1 river, la is the upper beam 5 , lower beam 6
This is a car compartment installed in a car frame made of etc. Considering the case where the car 1 rises at high speed in the car structure shown in FIG. 3, the airflow generated by high-speed running is first received by the upper hood 7, and as a result, a vortex is generated at both ends of the upper hood 7. Since the upper hood 7 and the car room la are isolated, the noise generated by the vortex flow is hardly transmitted to the car room la, and the noise level does not become large within the car. Once the airflow is received by the upper hood 7, it moves smoothly along the side wall of the car room la. That is, by receiving the air flow in the upper and lower hoods 7 and 9, which are once isolated from the car room la, the car room la
It is possible to prevent the air from directly colliding with the airflow and getting caught up in the vortex, which has a very large effect on noise reduction. In addition, the hood described in this embodiment has a simple plate-like shape and is sufficiently effective, so it can be easily manufactured and assembled, and it has little effect on maintenance and inspection work at the upper and lower parts.

Furthermore, since the shape is simple, it can be easily implemented as a measure to reduce swirl noise in existing elevators. Note that if the hood is installed separately from the car, it will have a noise reduction effect, but the upper hood should be placed more than 1 inch above the top surface of the car, and the lower hood should be more than 1 skin below the bottom surface of the car. If they are provided in isolation, a more significant noise reduction effect can be achieved. FIG. 4, FIG. 5, and FIG. 6 are diagrams showing other embodiments of the present invention.

In Fig. 4, the car compartment l is located at the end of the upper and lower hoods 7a and 9a.
In addition, in Fig. 5, the upper and lower hoods 7
Since the end portions of b and 9b are shaped like an arc curved toward the car room la to provide a rectifying effect, the generation of vortices is suppressed, and an even greater noise reduction effect can be expected. la
...Car room 5...Upper beam 6...Lower beam. In the embodiment shown in FIG. 6, a sound absorbing material 11 is fixed to the surfaces of the upper and lower hoods 7 and 9 on the side of the car room la, and the sound absorbing effect of the sound absorbing material 11 can realize an extremely large noise reduction. As explained above, the present invention is very simple because by installing a hood that temporarily catches the airflow above and below the car, the vortex generated by the collision with the airflow is not directly transmitted to the car. This makes it possible to reduce elevator noise with an economical configuration.

[Brief explanation of the drawing]

FIGS. 1 and 2 are diagrams showing a cage structure having a conventional rectifying plate. FIG. 3 is a diagram showing a cage structure according to an embodiment of the present invention. FIG. 4, FIG. 5, and FIG. 6 are views showing other embodiments of the present invention, respectively. 1...basket, 7, 7a, 7b...
Upper hood, 9, 9a, 9b...Lower hood, 11...
・Sound absorbing material. Chrysanthemum 7 Figure Z Figure 4 Dancing Figure Certain Figures

Claims (1)

[Scope of Claims] 1. At least one of an upper hood provided at a position isolated above from the upper surface of the car, and a lower hood provided at a position isolated downward from the lower surface of the car,
The elevator car is characterized in that each of the hoods has a flat surface whose surface is oriented in a direction in which the car ascends and descends. 2. The hood has an end inclined toward the car compartment,
The elevator car according to claim 1, wherein the elevator car has an arcuate shape curved toward the car room. 3. The elevator car according to claim 1 or 2, wherein the hood has a sound-absorbing material fixed to its surface on the side of the car room.