JPH04140295A - Elevator cage - Google Patents

Abstract

PURPOSE:To reduce noise due to cage elevation causing uncomfortableness and anxiety of passengers and to enable dust ejection by providing a current board covering a lower part of a dust hole behind an apron. CONSTITUTION:A support 16 with the cross section in the shape of the letter L is fixed on a lower surface of a supporting table 15 by a bolt, an upper part of an apron 9 whose upper end is brought into contact with a front end lower surface of a threshold 6 is fixed by a machine screw on a front end surface of this support 16, and a front end of an L-shaped current board 10 whose rear end upper surface is brought into contact with a lower end surface of a bone 14 is fixed by the machine screw on a rear intermediate part of this apron 9. In an elevator cage constituted as above, as an air current generated when the elevator is lowering is led behind by the apron 9 and then guided behind by the lower surface of the current board 10 and flown to the back and sides of a cage, it passes the dust hole 8 of the threshold 6 and inflow to an entrance with narrow air passage area can be prevented.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) This invention relates to an elevator car.

(Conventional technology) In recent years, as buildings have become taller and taller, elevators have become faster and faster.
The turbulence of airflow around the cars in the hoistway causes a lot of noise.

In particular, when the car passes through a protrusion such as the front end of a landing that protrudes into the hoistway, the air pressure fluctuates due to a sudden change in the area of the air flow path around the car, causing large noise. These noises propagate inside the car and become a factor that causes discomfort and anxiety to passengers.

Therefore, in order to prevent these noises, various noise countermeasures have been attempted, and an example thereof will be explained with respect to a conventional elevator car shown in FIG. 6.

In the figure, a car floor 3 is provided at the bottom of a car 2 that ascends and descends in a hoistway 1, and a door 4 is provided at the entrance and exit of the car 2.
is suspended on a rail (not shown).

Further, the lower end of the door 4 is provided with a pair of guide pieces 5 that protrude downward, and the lower part of the guide pieces 5 is connected to a guide groove formed on the upper surface of the sill 6 provided at the end of the car floor 3 on the entrance/exit side. 7 and is guided to open and close the door 4.

Note that the guide groove 7 is provided with a plurality of dust holes 8 for discharging foreign matter such as dust and mud accumulated in the guide groove 7. The structure is such that foreign matter falls through the dust pit 8.

Further, the upper end of an apron 9 that hangs downward is fixed to the lower surface of the end of a sill 6 provided at the end of the car floor 3 on the entry side.

By the way, as mentioned above, noise is generated due to a change in the area of the air flow path when the car 2 moves up and down in the hoistway 1. The gap between 1 and the threshold 6a is 4an by law for passenger safety.
Since it is regulated to be as follows, the cross-sectional area of the air flow path in this part becomes the minimum, and the air flow is constricted here and flows at high speed.

Furthermore, since the entrance/exit side of the hoistway 1 has unevenness such as the sill 6a, the pressure of the airflow fluctuates rapidly, which causes intermittent noise. Therefore, when the elevator descends, the lower part of the apron 9 is extended in order to suppress the air flow toward the entrance/exit side, which has a narrow air flow path area and many uneven surfaces, and guide it to the flow paths on the sides and back of the car. ing.

(Problem to be Solved by the Invention) However, in the conventional elevator car having such a configuration, most of the airflow generated during descent flows through the apron 9 to the back and sides of the car 2. Since the dust hole 8 of the sill 6 provided at the end of the car floor 3 on the entrance/exit side is open to this airflow, part of the airflow flows into the entrance/exit side flow path through the dust hole 8, It creates a vortex and generates noise.

Furthermore, since the flow path formed by the dust hole 8 is extremely narrow, the airflow becomes like a whistling sound, which becomes a source of high-frequency harsh noise.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an elevator car that can reduce the noise caused by elevator car lifting and lowering, which causes discomfort and anxiety for passengers, and can also discharge dust.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides an elevator car in which a dust pit is provided in a groove of a sill at the end of the entrance/exit side of the elevator car, and an apron is hung below the end of the sill. This elevator is characterized by having a rectifying plate installed at the rear of the apron to cover the lower part of the dust hole.

(Function) As a result, in an elevator constructed in this way, the airflow caused by the elevator car going up and down is prevented from passing upward through the dust hole, and the airflow is prevented from flowing upward through the dust hole, and the airflow is prevented from flowing upwardly through the bottom surface of the current plate without generating a vortex. It is guided backwards and flows through the back and sides of the elevator car.

(Embodiment) Hereinafter, one embodiment of the elevator car of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the essential parts of the elevator car of the present invention, and FIG. 2 is a longitudinal sectional view of the front end of the elevator car on the entrance/exit side, and FIG. 2 is a left side view of FIG. 1.

In FIGS. 1 and 2, the rear end of a support base 15 having a cross-section is fixed with bolts to the front surface of a channel steel rib 14 provided on the lower surface of the end of the car floor 3 on the entrance/exit side. A sill 6 having a groove 7 formed on the upper surface is placed on the upper surface of the sill 6 . Furthermore, a pair of oblong holes 8 are formed at the bottom of the groove 7 of this sill 6, as shown in FIG. The oval hole 15a is provided facing the oval hole 8, and as a result, the dimension A between both ends of the oval hole 15a is longer than that between both ends of the oval hole 8, as shown in FIG. There is.

On the other hand, the lower surface of the support base 15 has a cross-section I, a character-shaped support ] 6
The upper part of the apron 9, the upper end of which is in contact with the lower surface of the front end of the sill 6, is secured to the front end surface of this support 16 with a small bolt. The front end of the L-shaped rectifying plate 10, which is in contact with the lower end surface of the upper surface of the bone 14, is fixed by bending.

Now, in the elevator car configured in this way, the airflow when the elevator descends is guided rearward by the apron 9, and then further rearward by the lower surface of the rectifying plate 1o, and is directed to the rear and side surfaces of the car 2. Because it flows to the side, the threshold 6
It is possible to prevent dust from flowing through the dust trap hole 8 into the entrance/exit side where the air flow path area is narrow.

In addition, foreign matter such as dust and mud accumulated in the guide groove 7 of the sill 6 sequentially falls from the dust hole 8 and accumulates on the upper surface of the rectifying plate 10. However, if an abnormal amount of dust falls, the rectifying plate 10
Since both sides are open, there is no possibility that dust may fall from these parts and clog the pit hole 8.

In this way, a rectifying plate 10 is provided below the sill 6 of the car floor 3 to guide the airflow backward, and the airflow caused by the descent of the elevator is guided to the back and side surfaces of the car 2, and the dust trap 8 of the sill 6 is installed.
By blocking the air flowing from the dust hole 8 to the entrance and exit, it is possible to completely eliminate noise caused by the vortex of air flowing through the dust pit 8.

Next, FIG. 3 shows another embodiment of the elevator car of the present invention, in which the apron 9 side of the baffle plate 20 is the lower side and is tilted higher toward the car floor 3 to improve the air flow. The generation of noise is further suppressed by guiding the air more effectively to the rear and preventing air from swirling on the lower surface of the rectifying plate 20.

In addition, by constructing the rectifying plate 10.21 with a damping material such as a damping steel plate or a synthetic resin laminate, high frequency vibrations (including resonance) due to pressure fluctuations and the generation of noise due to this can be further prevented. be able to.

FIG. 4 shows another embodiment of the elevator car of the present invention, in which a porous sound-absorbing plate 11 is pasted on the surface of the rectifier plate 10. In this way, the noise can only be reduced. However, there is an advantage that the gap between the apron 9 and the lower surface of the rib j4 provided at the lower part of the car floor 3 can be reduced to further improve the soundproofing effect.

Furthermore, FIG. 5 shows a still further different embodiment of the elevator car of the present invention, in which a part of the apron 9 near the attachment of a current plate 21 having an increased inclination angle compared to the current plate 20 of FIG. 3 is shown. An inspection opening 12 is provided at the front, and the lid 13 is normally covered by a lid 13 that is removable from the front.

This configuration has the advantage that adjustment of the installation of the rectifying plate 21 during installation, checking and cleaning of foreign matter accumulated on the back side of the rectifying plate 21, etc. can all be carried out from the entrance/exit side.

In the above embodiment, the bottom surface of the current plate 1.0, 20.degree. 21 is flat, but the top surface may be a gently curved surface that protrudes to further enhance the effect of rectifying the flow toward the rear.

Furthermore, in the above embodiment, a gutter-shaped dust pan is placed or fixed on the upper surface of the rectifier plate 10.2021 to prevent dust from scattering into the hoistway, and the machine screws on the front surface of the rectifier plate 10.2021 are removed. It may be possible to collect it by doing so.

[Effects of the Invention] As described above, according to the present invention, in an elevator car in which a dust hole is provided in the groove of the sill at the tip of the entrance/exit side of the elevator car, and an apron is hung below the tip of the sill, behind the apron, By installing a rectifier plate that covers the lower part of the dust hole, we prevent the airflow in the hoistway caused by the elevator from going up and down into the dust hole, which prevents the generation of noise when the elevator goes up and down, and prevents dust from forming in the sill groove. It is possible to obtain an elevator car that is also capable of discharging.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of essential parts showing one embodiment of the elevator car of the present invention, FIG. 2 is a left side view of FIG. 1, and FIG. 3 is a main part showing another embodiment of the elevator cage of the present invention. FIG. 4 is a vertical cross-sectional view of a main part showing another different embodiment of the elevator car of the present invention, and FIG. 5 is a longitudinal cross-sectional view of a main part showing still another different embodiment of the elevator car of the present invention. FIG. 6 is a diagram showing an example of a conventional elevator corner. 2... Elevator car 6... Threshold 8... Dust pit 9... Apron 10... Rectifier plate (8733) Agent Patent attorney Yoshiaki Inomata (and others)
1 person)

Claims (1)

[Claims] In an elevator car in which a dust hole is provided in a groove in a sill at the tip of the entrance/exit side of the elevator car, and an apron is hung below the tip of the sill, a rectifying plate is provided behind the apron to cover the lower part of the dust hole. An elevator car characterized by: