JP2002179372A - Elavator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device capable of restraining passing of smoke or heat from a landing hall entrance with a simple construction. SOLUTION: Smoke prevention doors 10, 19a, 19b, 20A, 20B, 21a, 21b, 22a, and 22b for blocking a jamb 6 dividing the landing hall entrance 5 communicating an elevator shaft 1 and landing halls on respective floors by rotating when a fire breaks out are provided on this elevator device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus, and more particularly, to an elevator apparatus in which entrances and exits of a landing are provided with smoke-blocking measures.

[0002]

2. Description of the Related Art Generally, when a fire occurs in a building,
To prevent the spread of smoke to other floors through the hoistway and to prevent the spread of fire to other floors, install a door guide in the vertical direction within the depth dimension of both vertical edges of the three-sided frame that defines the landing entrance. There has already been proposed a configuration in which the door guide guides the vertical edge of the smoke shield door. (JP 6
1-2235388)

[0003]

The above-mentioned conventional technique is not suitable for a building having a small floor-to-floor spacing because the smoke-blocking door is vertically housed in the building. There is a problem that the structure needs to be wound within the edge and the mechanism becomes complicated.

[0004] It is an object of the present invention to provide an elevator apparatus capable of suppressing the passage of smoke or hot air from a landing entrance / exit with a simple configuration.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a car door provided on a car at a landing doorway communicating between a hoistway on which the car rises and descends and a landing on each floor. In an elevator apparatus provided with landing doors provided opposite to each other, a smoke shield door which turns in the event of a fire and closes a three-sided frame that defines the landing entrance is provided.

With the above structure, the passage of smoke or hot air from the landing entrance can be easily suppressed without providing a large fire door.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. A guide 2 guides a car 2 up and down in a hoistway 1 provided through each floor of the building. The car 2 is provided with a car door 3. Each floor 4 of the building is communicated with the hoistway 1 by a landing entrance 5 partitioned by a three-sided frame 6. A landing door 7 is provided on the car 2 side of the landing entrance 5 defined by the three-way frame 6 so as to face the car door 3, and usually closes the landing entrance 5. When the car 2 arrives at the back of the hall entrance 5, the car door 3 and the hall door 7 are engaged, and the car door 3 and the hall door 7 are mounted on the car 2 in the engaged state. (Not shown).

As described above, the landing entrance 5 is defined by a three-sided frame 6, and the three-sided frame 6 has a depth of T dimension from the floor 4 to the edge of the hoistway 1. And, on one side of the vertical edge of the three-sided frame 6, the
0 is provided. This smoke-blocking door 10 normally has a stepped storage section 8A provided on a landing wall 8 following the vertical edge of the three-sided frame 6.
Are stored as shown by a chain line. Then, in the event of a fire, it is rotated in the direction of arrow d by driving means (neither is shown) which is driven manually or based on a fire detection signal of a fire detector, and comes into contact with the vertical edge of the three-sided frame 6 on the side opposite to the hinge side. . Of course, the smoke shield door 10 has a size in contact with the upper edge of the three-sided frame 6. Therefore, the smoke shield door 10 is in contact with both the vertical edge and the upper edge of the three-sided frame 6 to close the landing entrance 5. Become.
The driving unit includes, for example, a holding device that normally holds the smoke shielding door in a fixed position and releases the holding of the smoke shielding door based on the fire detection signal or the like in the event of a fire, and the smoke shielding door always in the closing direction. And a spring (not shown) for generating a force for urging the door. The value of the spring force of the spring is a minimum value for keeping the door closed in the event of a fire, and a value that can be easily opened manually. Thereby, evacuation using the elevator from the outside of the door after the door is closed, or evacuation from the inside of the elevator to the outside of the door after the door is closed can be easily performed.

Incidentally, the three sides of the three-way frame 6 can be closed by the smoke shield door 10, but it is inevitable that a slight gap is formed between the floor 4 between the two vertical edges and the smoke shield door 10.
For that purpose, at the lower edge of the smoke shield 10 facing the floor 4,
It is preferable to attach a heat-resistant nonwoven material or the like to fill the gap. Further, for example, when a gap is generated between the smoke shield door 10 and the three sides of the three-way frame 6 due to a manufacturing error or aging,
A similar heat-resistant nonwoven material or the like may be attached to the vertical edge and the upper edge of the three-way frame 6 on the side opposite to the hinge to close the gap. FIG.
As shown in the figure, a taper 31 is provided on the lower part of the smoke shield door 10 and the landing floor 30 at the door closing position, so that the hoistway 1 side is upward in the height direction. Due to the close contact of the floor portion, the sealing performance is improved, and the smoke shielding performance is improved.

After the fire is lit, the smoke shield door 10 is turned in the direction of arrow c and stored in the stepped storage portion 8A as shown by a chain line.

In the above description, one smoke shielding door 10 is provided for the three-sided frame 6, but as shown in FIG. It is also possible to attach two smoke shield doors 20A and 20B that open and close in the symmetrical direction. Accordingly, the turning radii of the smoke shield doors 20A and 20B are reduced as indicated by arrows c and d, and the smoke shield doors 20A and 20B can be installed in a smaller space.

In the above embodiment, one smoke door 10 is pivotally moved. As shown in FIG. 4, the folded smoke doors 19a and 19b are connected to both vertical edges of the three-sided frame 6. In a normal state, the frame is stored in a folded state in a stepped storage portion 18 formed within the depth T of the three-sided frame 6, and the periphery of the three-sided frame 6 is closed during a fire in the same manner as in the above embodiment. It may be closed, and consequently the landing doorway 5 may be closed, thereby suppressing the entrance and exit of smoke therefrom. Further, as shown in FIG. 5, the hinge 9 can be provided at an end of the vertical edge of the three-sided frame 6 on the hoistway 1 side. Normally, the three-sided frame 6 is stored in a stepped storage portion 18 provided within the depth T of the vertical edge as shown by a chain line. In this case, by making the landing wall 8 travel toward the center of the car frontage with respect to the surface of the three-way frame 6, the door can not be easily recognized from the outside when the smoke-proof door is stored, and the design There are benefits. The above embodiment is described with reference to FIG.
As shown in FIG. 6, a single smoke shield door 21a, 21b is pivotally moved, but as shown in FIG. 6, the folded smoke shield doors 22a, 22b similar to FIG. A similar function can be obtained by a structure that is hinged to the edge and normally stored in a folded state in a stepped storage portion 18 formed within the depth T of the three-sided frame 6.

By the way, each of the smoke shield doors 10, 19a, 1
9b, 20A, 20B, 21a, 21b, 22a, 22
b is a metal material, a non-ferrous metal material,
It is formed of a ceramic material, a synthetic fiber material, or a combination thereof, and the material used in the above embodiment is a metal material.

[0014]

According to the present invention, it is possible to obtain an elevator apparatus which can suppress the passage of smoke and hot air from the entrance / exit of the landing with a simple structure.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment in the vicinity of a landing entrance of an elevator apparatus according to the present invention.

FIG. 2 is a cross-sectional view showing a form of a landing entrance floor of an elevator apparatus according to the present invention.

FIG. 3 is a plan view showing another embodiment near the landing entrance of the elevator apparatus according to the present invention.

FIG. 4 is a plan view showing another embodiment in the vicinity of a landing entrance of an elevator apparatus according to the present invention.

FIG. 5 is a plan view showing another embodiment near the landing entrance of the elevator apparatus according to the present invention.

FIG. 6 is a plan view showing another embodiment near the landing entrance of the elevator apparatus according to the present invention.

[Explanation of symbols]

1 ... hoistway, 2 ... car, 4 ... landing floor, 5 ... landing entrance, 6 ... three-way frame, 10, 19a, 19b, 20A, 20
B, 21a, 21b, 22a, 22b ... smoke shield door, 18 ...
Storage section, 30 ... floor floor, 31 ... taper.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masayuki Shigeta 832 Horiguchi, Hitachinaka City, Ibaraki Prefecture Inside Hitachi System Plaza Katsuta Hitachi Mito Engineering Co., Ltd. (72) Inventor Yuji Sekiya 832 Horiguchi, Hitachinaka City, Ibaraki Prefecture 2 Hitachi System Plaza Katsuta Hitachi Mito Engineering Co., Ltd. F-term (reference) 3F307 BA07 CD02 CD31

Claims (3)

[Claims] An elevator apparatus having a landing door provided at a landing doorway which communicates between a hoistway on which a car moves up and down and a landing on each floor, opposite to a car door provided on the car. An elevator apparatus, further comprising a smoke barrier that turns and closes the three-way frame that partitions the landing entrance in the event of a fire. 2. The elevator apparatus according to claim 1, wherein the smoke shield door is normally stored in a storage portion provided on the landing wall following the three-way frame or the three-way frame. 3. The elevator apparatus according to claim 1, wherein the smoke door is driven in a direction to close the landing entrance by driving means driven based on a fire detection signal.