JP2004238172A - Landing place doorway device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a landing place doorway device capable of securely blocking a clearance among a doorway frame, a floor part, and a door at a landing when a fire occurs, suppressing increase of width of the door in the landing, and preventing much time and labor from being required in installation and adjustment of the door in the landing. <P>SOLUTION: A flexible blocking body 15 movable between a usual position above a landing place entrance 1 and a blocking position for closing the landing doorway 1 while blocking a clearance between the landing doorway 1 and the door 6 in the landing and between the doorway frame 2 and it is used. A lower part blocking member 16 coming into contact with a landing sill 13 to block a clearance between the blocking body 15 and the landing sill 13 when the blocking body 15 is at a blocking position is attached to the blocking body 15. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a landing entrance / exit device for an elevator having a smoke shielding structure for closing a gap between a landing door and an entrance / exit frame in the event of a fire.
[0002]
[Prior art]
In a conventional elevator entrance / exit device, a shield plate is attached to a door open end of a landing door, and a bent portion facing the shield plate is formed at a hoistway-side end of an entrance / exit frame, so that the landing when the door is closed. The gap between the door and the entrance frame is narrowed. This suppresses smoke and flame generated during a fire from entering the hoistway from the landing doorway (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-7-247086
[Problems to be solved by the invention]
However, in the above-described conventional landing doorway device, it is difficult to adjust the positions of the shielding plate and the bent portion so that the shielding plate does not collide with the bent portion when the door is closed and the gap is made as small as possible. It takes time to adjust the installation of the door. In addition, the width of the landing door is increased by the amount corresponding to the shielding plate, and the required frontage dimension of the hoistway becomes large when the landing door is fully opened. Further, the gap between the lower end of the landing door and the floor of the landing, and the gap between the upper frame of the entrance frame and the landing door could not be narrowed.
[0005]
The present invention has been made to solve the above problems, and can more reliably close a gap between an entrance frame and a floor and a landing door at the time of fire, and An object of the present invention is to provide an elevator hall entrance / exit device capable of suppressing an increase in width of a hall door and preventing a troublesome installation adjustment of the hall door.
[0006]
[Means for Solving the Problems]
A landing entrance / exit device for an elevator according to the present invention is provided at a peripheral edge of the landing entrance / exit, and has a pair of side frames and an upper frame disposed between the side frames, and a landing for opening / closing the landing entrance / exit. The door can be moved between a normal position above the landing doorway and a closed position that closes the landing doorway while closing a gap between the landing doorway and the doorway frame. A flexible closing body, and a lower closing member attached to the closing body and in contact with a floor portion of the landing entrance when the closing body is in the closing position and closing a gap between the closing body and the floor portion. It is provided.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing a landing entrance / exit device for an elevator according to an example of an embodiment of the present invention. In the figure, an entrance / exit frame (here, a three-way frame) 2 is fixed to the periphery of the landing / exit 1. The entrance frame 2 has a pair of side frames 3 and 4 and an upper frame 5 horizontally arranged between upper end portions of the side frames 3 and 4. The landing entrance 1 is opened and closed by two landing doors 6.
[0008]
FIG. 2 is a sectional view taken along line II-II in FIG. Above the landing door 6 in the hoistway 7, a hanger case 8 having an inverted L-shaped cross section is arranged. The hanger case 8 is fixed to the hoistway wall 7a. The hanger case 8 is provided with a door rail 9 extending along the opening / closing direction of the landing door 6 (the frontage direction of the landing entrance 1).
[0009]
A door hanger 10 is fixed above the door 6 of each landing. Each door hanger 10 is provided with a plurality of hanger rollers 11 that roll along the door rail 9. Therefore, the landing door 6 is guided by the door rail 9 when the landing entrance 1 is opened and closed. A landing sill 13 that guides the movement of the lower end of the landing door 6 is fixed to the floor 12 of the landing entrance 1. The landing sill 13 forms a part of the floor 12.
[0010]
A storage case 14 is mounted on the hanger case 8. Most of the flexible sheet-shaped (cloth-shaped) closing body 15 is wound up and stored in the storage case 14. The closing body 15 is made of a fire-resistant and fire-resistant material, for example, a glass fiber cloth, a rock wool cloth, a ceramic fiber cloth, or the like. The storage case 14 is provided with a lid 14a for opening and closing the storage case 14 from the hoistway 7 side.
[0011]
The closing body 15 closes the landing doorway 1 while closing the gap between the entrance frame 1 and the normal position (FIG. 2) above the landing doorway 1 and between the landing doorway 1 and the landing door 6. The position (FIG. 3) is movable.
[0012]
At one end (lower end) of the closing body 15, a lower closing member (lower end fitting) 16 having an L-shaped cross section is attached. The lower closing member 16 is located above the landing doorway 1 when the closing body 15 is in the normal position, and is in contact with the floor portion 12 of the landing doorway 1 when the closing body 15 is in the closing position. The gap with the part 12 is closed.
[0013]
Specifically, the lower closing member 16 contacts the upper frame 5 when the closing body 15 is at the normal position. A step 5a is formed at a contact portion of the upper frame 5 with the lower closing member 16. Thereby, when the lower closing member 16 contacts the upper frame 5, the lower surface of the upper frame 5 and the lower surface of the lower closing member 16 become flush. When the closing member 15 is in the closing position, the lower closing member 16 abuts on the landing sill 13 over the entire width of the landing doorway 1.
[0014]
The storage case 14 is provided with a motor (not shown) for winding the closing body 15 to the closing position. As shown in FIG. 3, at the intermediate portion of the closing body 15, when the closing body 15 is at the closing position, it contacts the surface of the upper frame 5 on the hoistway 7 side to close the gap between the upper frame 5 and the upper frame 5. An upper closing member (upper protrusion) 17 is fixed. The upper closing member 17 contacts the upper frame 5 over the entire width of the landing doorway 1.
[0015]
FIG. 4 is a sectional view taken along the line IV-IV in FIG. A guide portion 18 for guiding the movement of the closing body 15 is fixed to the rear surface (inside) of the side frame 3. A sliding piece (slider) 19 that slides along the guide portion 18 is connected to the closing body 15 via a fitting 20. A weight 21 is fixed to the metal fitting 20. When the winding torque by the motor as the holding means is released, the closing body 15 is pulled out of the storage case 14 by the weight of the weight 21 and automatically moved to the closing position.
[0016]
On the surface of the side frame 3 facing the landing door 6, a protrusion 22 is provided continuously in the up-down direction with which the closing body 15 at the closing position contacts. The protrusion 22 is formed integrally with the side frame 3, but may be formed by fixing another member. Although only the side frame 3 is shown in FIG. 4, the guide portion 18, the sliding piece 19, the metal fittings 20, the weights 21, and the protrusions 22 are also symmetrically arranged on the side frame 4 side.
[0017]
Next, the operation will be described. During normal operation, the closing body 15 shown in FIG. 2 is in the closing position, and most of the closing body 15 is wound and stored in the storage case 14. The lower closing member 16 abuts on the landing sill 13 over the entire width of the landing doorway 1.
[0018]
In this state, when a fire detection signal is sent from a fire detector (not shown) or a control room to the control panel, a closing command signal is output from the control panel, and the winding holding force of the closing body 15 is released. Thereby, the closing body 15 is pulled out of the storage case 14 by the weight of the weight 21 and the lower closing member 16 and is moved to the closing position.
[0019]
When the closing body 15 is moved to the closing position, the landing doorway 1 is closed by the closing body 15, and the gap between the entrance frame 2 and the landing door 6 is also closed. The gap between the lower end of the landing door 6 and the landing sill 13 is closed by the lower closing member 16.
[0020]
Therefore, it is possible to more reliably close the gap between the entrance frame 1 and the floor 12 and the landing door 6 at the time of fire, and to more reliably prevent smoke and flame from entering the hoistway 7. Can be. Further, since no member is added to the landing door 6, an increase in the width of the landing door 6 can be suppressed, and it is possible to prevent the installation adjustment of the landing door 6 from being troublesome.
[0021]
Furthermore, since the sheet-like closing member 15 having flexibility is used, the closing member 15 can be reduced in weight, can be wound up and stored, and the storage space in a normal state can be reduced. Furthermore, since the storage case 14 is arranged on the hanger case 8, the space in the hoistway 7 can be effectively used, and the maintenance work of the closing body 15 and the motor stored in the storage case 14 can be easily performed from the car. It can be carried out.
[0022]
Further, since the guide portion 18 for guiding the movement of the closing body 15 is provided on the back surface of the side frame 3, it is possible to save space while preventing the design of the landing entrance 1 from being deteriorated. Furthermore, since the sliding piece 19 that slides along the guide portion 18 is connected to the closing body 15, the closing body 15 can be moved more smoothly.
[0023]
Furthermore, since the projection which the closing body 15 at the closing position contacts is provided on the surface of the side frame 3 facing the landing door, the closing body 15 can be more securely brought into close contact with the side frame 3. .
[0024]
In the middle portion of the closing body 15, an upper closing member 17 that contacts the surface of the upper frame 5 on the hoistway 7 side and closes a gap between the upper frame 5 and the closing body 15 when the closing body 15 is in the closing position. Since it is fixed, the gap between the closing body 15 and the upper frame 5 can be more reliably closed.
[0025]
Further, since the closing body 15 is moved from the normal position to the closing position by gravity acting on the weight 21, the closing body 15 can be moved to the closing position without securing a special driving power supply or the like in the event of a fire. it can.
[0026]
In the above example, the closing body 15 is wound up and stored. However, it is not always necessary to wind up, and the closing body 15 may be made to stand by at a normal position with the spreading body widened.
[0027]
【The invention's effect】
As described above, the landing entrance / exit device for an elevator of the present invention closes the entrance / exit while closing the gap between the entrance / exit frame between the entrance / exit and the entrance door, and the normal position above the entrance / exit. A flexible closing body that is movable between a closed closing position and a closed closing position is used. When the closing body is in the closed position, the closing body and the floor are in contact with the floor of the landing entrance. A lower blocking member that closes the gap between the doors is attached, so that the gap between the entrance frame and floor and the landing door can be more reliably closed in the event of a fire, and the width of the landing door increases. It is also possible to prevent the installation of the landing door from being troublesome.
[Brief description of the drawings]
FIG. 1 is a front view showing a landing entrance / exit device for an elevator according to an example of an embodiment of the present invention.
FIG. 2 is a sectional view taken along the line II-II in FIG.
FIG. 3 is a cross-sectional view showing a state where the closing body of FIG. 2 has moved to a closing position.
FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;
[Explanation of symbols]
1 entrance doorway, 2 entrance frame, 3,4 side frame, 5 upper frame, 6 landing door, 8 hanger case, 9 door rail, 12 floor, 14 storage case, 15 closing body, 16 lower closing member, 17 upper closing Member, 18 guide portion, 19 sliding piece, 21 weight, 22 protrusion.

Claims (7)

An entrance frame provided at a peripheral portion of a landing entrance, and having a pair of side frames and an upper frame disposed between the side frames,
A landing door that opens and closes the above-mentioned landing entrance,
It is possible to move between a normal position above the landing entrance and a closed position that closes the landing entrance while closing a gap between the entrance frame and the entrance door between the landing entrance and the door of the landing. A flexible closure, and attached to the closure, contacting the floor of the landing doorway when the closure is in the closure position to create a gap between the closure and the floor. A landing entrance / exit device for an elevator, comprising a lower closing member for closing. The landing entrance / exit device for an elevator according to claim 1, wherein the closing body is wound up and stored when in the normal position. The landing entrance / exit device for an elevator according to claim 2, wherein a storage case for storing the wound-up closing body is disposed on a hanger case to which a door rail is attached. The elevator entrance / exit device according to any one of claims 1 to 3, wherein a guide portion for guiding the movement of the closing body is provided on a back surface of the side frame. The landing doorway device for an elevator according to claim 4, wherein a sliding piece that slides along the guide portion is connected to the closing body. The surface facing the door of the landing of the side frame is provided with a projection in the up-down direction, which is in contact with the closing body at the closing position, in a vertical direction. 5. The landing entrance / exit device for an elevator according to any one of 5. An upper blocking member is fixed to an intermediate portion of the closing member to contact a surface of the upper frame on the hoistway side and close a gap between the closing member and the upper frame when the closing member is at the closing position. The landing entrance / exit device for an elevator according to any one of claims 1 to 6, wherein:

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