JP2003335485A - Hall door for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hall door for an elevator capable of enhancing the smoke preventive performance simply without impairing fine appearance of a hall. <P>SOLUTION: The hall door of the elevator includes a rail 10 mounted on a mounting arm 10a installed protrusively toward the inside of a shaft 2 in the upper part of a doorway 4 of each elevator hall 1, and a door panel 14 suspended at the rail 10 through a sash pulley 11 is engaged in the condition with gaps 51-53 reserved with respect to a three-sided frame 5, and the engagement is released with an actuation signal of a fire sensor 26 to cause the door panel 14 to sink aslant toward the doorway 4 to result in abutting to the frame 5, whereby the gaps 51-53 are blocked. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator hall door, and more particularly to improvement of smoke shielding performance.

[0002]

9 to 14 show a conventional elevator landing door. First, FIG. 9 is a front view of the elevator hall, and the doorway 4 provided in the hall 1 is surrounded by a three-way frame 5 including a vertical frame 5a and an upper frame 5b. Hoistway 2
A mounting arm 10a is projectingly provided on the inner wall 3 of the upper portion of the doorway 4, a rail 10 is laterally provided on the mounting arm 10a, and a suspension panel 11 rolling on the rail 10 is provided with a door panel 14 via a door hanger 12. Suspended. Door panel 14
Engages the guide shoe 17 with the threshold 16 to open and close the doorway 4. In such an elevator landing door, a lower void 51 is formed between the lower end of the door panel 14 and the sill 16 in terms of a mechanism, and a lower void 52 is formed between the door panel 14 and the vertical frame 5a. Further, an upper space 53 is formed between the door panel 14 and the upper frame 5b.

By the way, an elevator hall door is a fire door that divides the hoistway 2 into a fire-proof section, and has a function of preventing the fire from spreading to another place through the hoistway 2 when a fire occurs in the building. Must be provided. Therefore, the gap formed between the door panel 14 and the peripheral edge of the doorway 4 is limited to a predetermined size or less.
However, when a fire occurs, smoke may flow into the hoistway 2 from the gap formed between the door panel 14 and the three-way frame 5, exposing passengers in the car to the smoke.

FIG. 12 shows a landing door similar to that disclosed in Japanese Patent Application Laid-Open No. 9-267985. When a fire occurs, the door panel 14 is pressed against the three-way frame 5 to close the gap, thereby causing smoke to move up and down the hoistway. It is designed so as to prevent it from flowing into the inside of No. 2. That is, the substrate 6 is attached to the inner wall 3 of the hoistway 2.
0 is attached, a linear bearing 62 is fixed to the substrate 60, and a stepped bolt 61 is inserted therethrough. Further, a compression coil spring 63 is loosely fitted to the stepped bolt 61, and the rail 10 is attached to the end portion on the hoistway 2 side. The rail 10 is normally pressed by the compression coil spring 63 and displaced toward the hoistway 2.

An electric motor 64 is installed at a position on the side of the door which does not hinder the opening and closing of the door panel 14. The V-belt 65 is wound around the electric motor 64 and the pulley 66, and the power of the electric motor 64 is transmitted to the worm shaft 67 hanging from the pulley 66. Door panel 1 on worm shaft 67
Worm shaft 6 is provided at the uppermost part of
It meshes with 9. Similarly, a worm screwed in the opposite direction is attached to the lowermost portion of the door panel 14, and the worm shaft 71 is meshed therewith. A drive plate 70 is fixed to the worm shaft 69, and is normally held upright. A drive plate 72 is fixed to the worm shaft 71, and is normally held in a hanging state.

When the fire detection signal is input, the electric motor 64
Is urged to rotate the worm shaft 67. By this rotation, the worm shaft 69 rotates clockwise as shown by the arrow in the drawing, and the drive plate 70 pushes the uppermost portion of the door panel 14 to the hall 1 side as indicated by reference numeral 70 '. Further, the worm shaft 71 rotates counterclockwise as shown by the arrow in the drawing, and the drive plate 72 pushes the lowermost portion of the door panel 14 to the hall 1 side as indicated by reference numeral 72 '. The door panels 14 are displaced toward the hall 1 by the pressing by the drive plates 70 and 72, and the rail 1
0 also moves the compression coil spring 63 to the hall 1 side by further compressing it. By this movement, the upper edge portion of the door panel 14 abuts the cushion 73 attached to the upper frame 5b to close the upper void 53, and the side edge portion abuts the cushion 74 attached to the vertical frame 5a. The void 52 is closed, and the cushion 75 attached to the guide sea 17 at the lower edge portion abuts the groove inner surface of the sill 16 to close the lower void 51. The blockage of each void can prevent smoke from entering the hoistway 2.

FIGS. 13 and 14 are perspective views showing a device for fire-blocking the hall 1, which is a prior art similar to the one described in Japanese Utility Model Laid-Open No. 2-594947. That is, a smokeproof door 81 having two doors on one side, which is pivotally mounted rotatably and hinged, is housed in a storage box 82 provided on both sides of the entrance 4 of the elevator. In addition, a smoke-proof door 8 is provided on the ceiling above the doorway 4 so as to correspond to the contour of the fire-proof compartment.
A peripheral wall 83 is formed so as to hang down slightly from the upper end position of 1. When a fire occurs, the smokeproof door 81 is rotated to pull it out from the left and right storages 82, and the fireproof door 81 is expanded so as to surround the peripheral wall 83 to partition the hall 1 in front of the doorway 4. is there. With this section, the fireproof performance of the hall 1 is improved so that smoke can be prevented from entering the hoistway.

[0008]

According to the conventional elevator hall door constructed as described above, in the hall door shown in FIG. 12, the electric motor 64 and the worm shaft 67 must be provided for each hall door. No, the device is too complicated. In addition, since it has to be mounted in the narrow hoistway 2, there is a problem that it is not easy to secure an installation space especially when a plurality of units are installed side by side. Also, FIG. 13 and FIG.
4 has a problem that the smoke-proof door 81 is visible from the hall 1 side, which impairs the aesthetics of the hall 1. Further, when a plurality of units are installed side by side, since the entrance / exit 4 of the adjacent unit is close to each other, the smoke-proof door 81 also has to be folded in multiple stages. Due to this multi-stage, there is a concern that the fire performance will deteriorate.
There was also the problem that the fire protection area had to be narrowed.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an elevator landing door that can easily improve smokeproof performance without impairing the aesthetics of the landing. And

[0010]

[Means for Solving the Problems] Claim 1 according to the present invention
The elevator landing door described in 1 is attached with a rail on a mounting arm protruding toward the inside of the hoistway at the upper part of the entrance of the elevator landing, and a door panel suspended via a suspension car on this rail is attached to the three sides of the doorway. It was locked with a gap between it and the frame, and the lock was released by a fire detection signal, and the door panel was tilted down toward the entrance and exit side to abut the three-way frame to close the gap. It is a thing.

An elevator hall door according to a second aspect of the present invention is the elevator hall door according to the first aspect, wherein the door panel is an inner door panel that is suspended from a rail via a suspension vehicle to open and close an entrance. And an outer door panel provided on the outer side of the inner door panel, the other end being attached to the outer door panel, the one end being attached to the inner door panel, and the outer door panel being connected to the inner door panel in a vertically swingable manner. In the normal state, the outer door panel is pulled up so that the other end is higher than the one end in a normal state, and is locked on the inner door panel side with a gap between the outer door panel and the three-way frame of the entrance and exit, and a fire occurs. The lock is released by the detection signal and the outer door panel is lowered to tilt the connector, and the outer door panel is brought into contact with the three-way frame to form a gap. It is obtained by the Guyo.

The elevator landing door according to a third aspect of the present invention is the elevator landing door according to the first aspect, wherein the rail mounting arm is inclined upward from the hoistway wall into the hoistway. Then, the rail is lifted to the inside of the hoistway along the mounting arm, and the rail is locked with a gap between the door panel and the three-way frame of the doorway.
According to the fire detection signal, the locking is released, and the rail is moved downward along the mounting arm toward the entrance / exit side, and the door panel is brought into contact with the three-way frame to close the gap.

The elevator hall door according to a fourth aspect of the present invention is the elevator hall door according to the first to third aspects, wherein a sealing material is attached to a portion where the door panel and the three-way frame of the doorway are in contact with each other. , Which improves the smoke barrier property when the void is blocked.

An elevator landing door according to a fifth aspect of the present invention is the elevator landing door according to any one of the first to third aspects, in which a sealing material is attached to the lower surface of the door panel to close the gap. It is an improved smoke barrier.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1 to 5 are
1 shows an elevator landing door according to Embodiment 1 of the present invention. FIG. 1 is a vertical cross-sectional view of a hoistway at an entrance / exit of an elevator. In the figure, 1 is a landing hall, 2 is a hoistway, 3 is an inner wall of the hoistway 1, 4 is an entrance / exit, and 5 is a three-way frame that borders the entrance / exit 4, and includes a vertical frame 5a and an upper frame 5b. 10 is the doorway 4
Rails attached to a mounting arm 10a protruding toward the inside of the hoistway 2 at the upper part of the rail, 11 is a suspension wheel rolling on the rail 10, and 12 is a rail 1 via the suspension vehicle 11.
The door hanger suspended at 0 and 13 are auxiliary door hangers attached to the door hanger 12.

Reference numeral 14 is a door panel for opening and closing the doorway 4,
Inner door panel 14 suspended via door hanger 12
a, an outer door panel 14b suspended via the auxiliary door hanger 13 and provided outside the inner door panel 14a, and one end 15a of the inner door panel 14a,
The other end 15b is attached to the outer door panel 14b, and the outer door panel 14b is vertically swingably connected to the inner door panel 14a.

Reference numeral 16 is a sill attached to the hall 1 to guide the door panel 14, and 17 is a guide shoe hanging from the lower end of the inner door panel 14a and engaging with the groove of the sill 16. Reference numeral 21 is a locking tool that locks the outer door panel 14b to the auxiliary door hanger 13 with a predetermined gap between the three-way frame 5 and 26, a fire detector 26 attached to the ceiling of the hall 1, and 51 is a door panel 14 A lower space formed between the lower end of the door and the sill 16, 52 a side space formed between the door panel 14 and the vertical frame 5a, and 53 an upper space formed between the door panel 14 and the upper frame 5b. . Each void 51, 5
2 and 53 are smaller than a predetermined size, and the door panel 14
Acts as a fire door.

FIG. 2 is a cross-sectional view of the hoistway 2 at the entrance / exit 4 portion, FIG. 3 is a cross-sectional view taken along the line III--III of FIG. 1, FIG. 4 is a perspective view of the inner door panel 14a, and FIG. 5 is a door panel. 14 is a vertical cross-sectional view of the upper edge portion of FIG. In each figure, the same reference numerals as those in FIG. 1 indicate the same parts. 22 is the outer door panel 14b
And a three-sided frame 5 with predetermined gaps 51, 52, and 53 separated from each other, the lever 22 locks the pawl 22a to the auxiliary door hanger 13, 23 a support arm for swingably supporting the lever 22, 24 Is an electromagnet that attracts the lever 22 by urging to lock the pawl 22a to the auxiliary door hanger 13, and 25 presses the lever 22 counterclockwise to deactivate the electromagnet 24 to lock the pawl 22a and the auxiliary door hanger 13. The unlocking means is composed of a push spring that unlocks. The lever 22, the claw 22a, the support arm 23, and the electromagnet 24 constitute the locking tool 21.

Next, the operation will be described. In normal times, electromagnet 2
4, the outer door panel 14b is lifted so that the other end 15b is higher than the one end 15a, and the claw 22a is locked to the auxiliary door hanger 13 and is hung by the lever 22. ing. The inclination of the connector 15 is increased by pulling up the outer door panel 14b,
The outer door panel 14b is pulled toward the inner door panel 14a. As a result, a lower space 51, a side space 52, and an upper space 53 are formed between the outer door panel 14b and the three-sided frame 4, and the outer door panel 14b opens and closes the doorway 4 together with the inner door panel 14a. There is.

When the fire detector 26 is activated, the electromagnet 24 is deenergized, provided that the door panel 14 is closed. The lever 22 is pushed by the pushing spring 25 by this deenergization and swings counterclockwise as shown by reference numeral 22 'in FIG. 5 to release the engagement between the claw 22a and the auxiliary door hanger 13. By releasing the lock, the outer door panel 14b descends in an arc with the one end 15a of the connector 15 as a fulcrum. As a result, the outer door panel 14b is displaced as indicated by the reference numeral 14b ', and the front end edge is moved up and down the hoistway 2 of the three-way frame 5.
The lower surface abuts the threshold 16 and the lower surface abuts the threshold 16 to close the lower void 51, the side void 52, and the upper void 53, respectively.
The unlocked outer door panel 14b is locked to the auxiliary door hanger 13 by urging the electromagnet 24 while the outer door panel 14b is being lifted.

According to the first embodiment, the outer door panel 14b is normally pulled up and the lever 2
Since it is hung on 2, the lower space 51 is drawn between the sill 16 and the side space 52 and the upper space 53 is drawn between the three-sided frame 4 and the inner door panel 14a by the connector 15. It Therefore, the outer door panel 14b
Can move with the inner door panel 14a to open and close the doorway 4.

When the fire detector 26 is activated, the electromagnet 24 is de-energized and the lever 22 is pushed by the pushing spring 25 and swings counterclockwise to release the engagement between the claw 22a and the auxiliary door hanger 13. As a result, the outer door panel 14b draws an arc with one end 15a of the connector 15 as a fulcrum, moves downward and is displaced toward the hall 1 side as it descends, and the front end edge is brought into contact with the hoistway 2 side of the three-way frame 5, and the lower surface is a sill The lower space 51, the side space 52, and the upper space 53 are closed by bringing them into contact with 16. This blockage can prevent smoke from entering the hoistway 2 from the hall 1.

Embodiment 2. FIG. 6 shows an elevator hall door according to Embodiment 2 of the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 5 indicate the same parts, 31 is a substrate attached to the inner wall 3 of the hoistway 1, 32 is the substrate 31 to the hoistway 2
The mounting arm is provided so as to incline upward inward, and the rail 10 is mounted to the upper end portion of the upper arm 33. The mounting arm 32 is loosely inserted and locked in a state of protruding toward the inside of the hoistway 2. The lock 33 includes a cylinder 33a, a coil 33b wound around the outer periphery of the cylinder 33a to form an electromagnet, and a movable iron piece 33c fixed to the lower end of the mounting arm 32. Reference numeral 34 denotes a pressing spring that presses the movable iron piece 33c in a direction away from the cylinder 33a, and constitutes a lock releasing means.

The reference numeral 42 is attached to the lower end portion of the door panel 14, is projected from the guide shoe 17 toward the inside of the hoistway 2 and is inclined upward, and the lower end portion of the door panel 14 is attached to the upper end portion. Arms 43 are locking tools that lock the mounting arm 42 in a state in which the mounting arm 42 is loosely inserted and protrudes toward the hoistway 2, and is a coil that is wound around the cylinder 43a and the outer circumference of the cylinder 43a to form an electromagnet. 43b and mounting arm 42
And a movable iron piece 43c fixed to the descending end of the. Four
Reference numeral 4 denotes a pressing spring that presses the movable iron piece 43c in a direction away from the cylinder 43a, and constitutes a lock releasing means.

Next, the operation will be described. In normal times, the coil 33
b is constantly energized, and the movable iron piece 33c is attracted to the cylinder 33a. Due to this adsorption, the mounting arm 32 moves to the hoistway 2
It inclines toward the side and projects. Due to this protrusion, the rail 10 is constantly displaced upward toward the hoistway 2 side. The same applies to the lower end of the door panel 14,
The coil 43b is constantly energized, and the movable iron piece 43c is attracted to the cylinder 43a. Due to this adsorption, the mounting arm 42
Is inclined and projected toward the hoistway 2 side. Due to this protrusion, the lower end of the door panel 14 is constantly displaced upward toward the hoistway 2 side.

When the fire detector 26 is activated, the coil 33b is deactivated, provided that the door panel 14 is closed. Due to this deenergization, the movable iron piece 33c moves the pressing spring 34
Cylinder 33a depending on the pressing force of the rail and the weight of the rail 10.
As shown by reference numeral 22 ', the mounting arm 32 inclines and descends toward the hall 1 while supporting the rail 10.
As a result of this lowering, the door panel 14 also inclines and lowers as indicated by reference numeral 14 '. The same applies to the lower end of the door panel 14, and when the fire detector 26 operates,
The coil 43b is deenergized. By this deenergization, the movable iron piece 43c is separated from the cylinder 43a by the pressure of the pressing spring 44 and the weight of the door panel 14, and the mounting arm 42 tilts and lowers the lower end portion of the door panel 14 toward the landing 1 side and tilts and lowers the rail 10. Promotes the lowering of the door panel 14. When the door panel 14 is inclined and lowered, the lower void 51, the side void 52, and the upper void 53 are closed to prevent smoke from entering the hoistway 2 from the hall 1.

Also according to the second embodiment, the operation of the fire detector 26 causes the mounting arm 32 to support the rail 10 so as to incline and descend toward the landing 1 side, and this descending also causes the door panel 14 to incline and descend to cause a lower space 51. The side gap 52 and the upper gap 53 are closed to prevent smoke from entering the hoistway 2 from the landing 1. Further, since the lower end of the door panel 14 is also inclined and lowered similarly, the lower void 51, the side void 52, and the upper void 53 are closed, so that the smoke from the landing 1 into the hoistway 2 can be more reliably invaded. Can be stopped. Further, since the door panel 14 is a single layer, the size in the depth direction can be reduced, and the size of the car that can be stored in the hoistway 2 can be increased.

Embodiment 3. FIG. 7 shows an elevator landing door according to Embodiment 3 of the present invention, and particularly shows a case where the elevator door is installed on the outer door panel 14b shown in Embodiment 1. In the figure, the same reference numerals as those in FIGS.
5 is an upper frame 5 with which the upper frame 5b and the outer door panel 14b abut.
The sealing material attached to the portion b, 46 is the sealing material attached to the portion of the vertical frame 5a where the vertical frame 5a and the outer door panel 14b contact, and 47 is the sealing material attached to the lower surface of the outer door panel 14b. As the sealing material, silicone rubber or a brush can be considered. According to the third embodiment, since the sealing materials 45, 46 and 47 are attached, it is possible to further improve the airtightness of the portion with which the outer door panel 14b abuts. The same applies to the single door panel 14.

Fourth Embodiment FIG. 8 shows an elevator hall door according to a fourth embodiment of the present invention, and particularly shows a case where a sealing material is attached to the outer door panel 14b shown in the first embodiment. In the drawings, the same reference numerals as those in FIGS. 1 to 7 indicate the same parts, 48 is a sealing material attached to a portion of the outer door panel 14b which is in contact with the upper frame 5b, and 49 is a vertical frame 5.
It is a sealing material attached to a portion of the outer door panel 14b that abuts a. Also in the fourth embodiment, since the sealing materials 48 and 49 are attached, the airtightness of the contact portion between the outer door panel 14b and the three-way frame 5 can be further improved. The same applies to the single door panel 14.

[0030]

Since the present invention is configured as described above, it has the following effects. The elevator landing door according to claim 1 according to the present invention has a rail attached to a mounting arm projecting toward the inside of the hoistway at the upper part of the entrance of the elevator landing, and suspended on this rail via a suspension vehicle. The door panel is locked with a space between it and the three-way frame at the doorway, and the door panel is brought into contact with the three-way frame by inclining and lowering the door panel toward the doorway side by releasing the above lock by the fire detection signal. It is designed to close the gap. Therefore, even if a fire occurs in the building, the space between the door panel, the three-sided frame and the sill is closed, so that smoke can be prevented from entering the hoistway. In particular, since the door panel is inclined and lowered, gravity can be used as a drive source, and the structure is simple, which is also advantageous.

An elevator landing door according to a second aspect of the present invention is the elevator landing door according to the first aspect, wherein the door panel is an inner door panel that is suspended from a rail via a suspension vehicle to open and close the doorway. And an outer door panel provided on the outer side of the inner door panel, the other end being attached to the outer door panel, the one end being attached to the inner door panel, and the outer door panel being connected to the inner door panel in a vertically swingable manner. In the normal state, the outer door panel is pulled up so that the other end is higher than the one end in a normal state, and is locked on the inner door panel side with a gap between the outer door panel and the three-way frame of the entrance and exit, and a fire occurs. The lock is released by the detection signal and the outer door panel is lowered to tilt the connector, and the outer door panel is brought into contact with the three-way frame to form a gap. It is obtained by the Guyo. Even in this case, since the gap is closed, it is possible to prevent smoke from entering the hoistway, and there is an effect that the appearance of the door panel is not spoiled. In particular, since the door panels are doubled and only the outer door panel directly related to the gap closure is tilted, there is an effect that the structure is simple.

An elevator hall door according to a third aspect of the present invention is the elevator hall door according to the first aspect, wherein the rail mounting arm is inclined upward from the hoistway wall into the hoistway. Then, the rail is lifted to the inside of the hoistway along the mounting arm, and the rail is locked with a gap between the door panel and the three-way frame of the doorway.
According to the fire detection signal, the locking is released, and the rail is moved downward along the mounting arm toward the entrance / exit side, and the door panel is brought into contact with the three-way frame to close the gap.
Even in this case, the smoke can be prevented from entering the hoistway, and the appearance of the door panel is not spoiled. In particular, since the door panel can be single-layered, the dimension in the depth direction can be reduced, and the size of the car can be increased to effectively use the hoistway.

The elevator landing door according to a fourth aspect of the present invention is the elevator landing door according to the first to third aspects, in which a sealing material is attached to a portion where the door panel and the three-way frame of the doorway are in contact with each other. It is a thing. Therefore, there is an effect that the airtightness between the door panel and the three-sided frame is improved, and the smoke shielding property can be enhanced.

The elevator hall door according to a fifth aspect of the present invention is the elevator hall door according to the first to third aspects, in which a sealing material is attached to the lower surface of the door panel. Therefore, there is an effect that the airtightness between the door panel and the sill is improved, and the smoke shielding property can be enhanced.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a hoistway of an entrance / exit in which an elevator hall door according to Embodiment 1 of the present invention is installed.

FIG. 2 is a transverse cross-sectional view of the hoistway of the entrance / exit portion in which the elevator hall door according to Embodiment 1 of the present invention is installed.

FIG. 3 is a cross-sectional view taken along the line III-III of FIG.

FIG. 4 is a perspective view of an inner door panel 14a.

FIG. 5 is a vertical cross-sectional view of the upper edge portion of the door panel 14.

FIG. 6 is a vertical cross-sectional view of a hoistway of an entrance / exit portion in which an elevator hall door according to Embodiment 2 of the present invention is installed.

FIG. 7 is a vertical cross-sectional view of a hoistway at an entrance / exit portion where an elevator hall door according to Embodiment 3 of the present invention is installed.

FIG. 8 is a vertical cross-sectional view of a hoistway at an entrance / exit portion in which an elevator hall door according to Embodiment 4 of the present invention is installed.

FIG. 9 is a front view of a hall of a doorway portion in which a conventional elevator hall door is installed.

FIG. 10 is a transverse cross-sectional view of a landing of a doorway portion in which a conventional elevator landing door is installed.

FIG. 11 is a vertical cross-sectional view of a landing of a doorway portion in which a conventional elevator landing door is installed.

FIG. 12 is a vertical cross-sectional view of a landing of an entrance / exit in which another conventional elevator landing door is installed.

FIG. 13 is a perspective view of a conventional fireproof compartment device for an elevator hall.

FIG. 14 is a perspective view of a conventional firebreak compartment device for an elevator hall.

[Explanation of symbols]

1 hall, 2 hoistway, 3 inner wall, 4 entrance, 5 three-way frame, 5a vertical frame, 5b upper frame, 10 rail, 10a mounting arm, 11 suspension car, 12 door hanger, 13 auxiliary door hanger, 14 door panel, 14a inner door panel, 14b outer door panel, 15 connector,
15a one end, 15b other end, 16 threshold, 1
7 guide shoes, 21 locking tools, 22 levers, 22a claws, 23 supporting arms, 24 electromagnets, 25 pressing springs, 26 fire detectors,
31 base plate, 32 mounting arm, 33 locking tool,
33a cylinder, 33b coil, 33c
Movable iron piece, 34 push spring, 42 mounting arm, 4
3 locking tool, 43a cylinder, 43b coil, 43c movable iron piece, 44 push spring, 4
5 Sealants, 46 Sealants, 47
Sealing material, 48 Sealing material, 49
Sealant, 51 lower void, 52 side void, 53 upper void.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Nobuhiro Nishimura             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. F-term (reference) 3F304 CA02 DA03                 3F307 AA02 BA07 CA03 CD04 CD08                       CD21 CD31

Claims (5)

[Claims] 1. An elevator that opens and closes the entrance and exit by a door panel that is suspended via a suspension vehicle from a rail that is attached to a mounting arm that projects toward the inside of the hoistway at the upper part of the entrance and exit of the elevator hall. At the landing door of
By a locking tool that locks the door panel in a state where a gap is formed between the doorway and the three-way frame, and by tilting and lowering the door panel toward the doorway side by unlocking the lock by a fire detection signal. An elevator landing door provided with locking release means for contacting the three-way frame to close the gap. 2. A door panel, an inner door panel suspended from a rail via a suspension vehicle to open and close an entrance / exit, an outer door panel relatively provided outside the inner door panel, and the other end being the outer door panel. , One end is attached to each of the inner door panel and a connecting member that connects the outer door panel to the inner door panel so as to be vertically swingable, and the locking member is the other end of the connecting member. The outer door panel is pulled up so as to be higher than the one end, and is locked on the inner door panel side with a gap between the outer door panel and the three-way frame of the doorway. By releasing the locking of the locking tool by lowering the outer door panel, the connecting tool is tilted to bring the outer door panel into contact with the three-way frame. The elevator landing door according to claim 1, wherein the elevator door is a door. 3. A rail mounting arm is provided so as to project upward from the hoistway wall toward the inside of the hoistway, and a locking member is lifted and displaced inside the hoistway along the mounting arm. Then, the rail is locked in a state where a gap is provided between the door panel and the three-way frame of the doorway, and the unlocking means unlocks the locking tool by a fire detection signal to unlock the locking tool. The elevator landing door according to claim 1, wherein the rail is displaced downward along the mounting arm toward the entrance / exit side to bring the door panel into contact with the three-way frame of the entrance / exit. 4. The elevator landing door according to claim 1, wherein a sealing material is attached to at least one of the door panel and the three-sided frame at a portion where the door panel and the three-sided frame of the doorway contact each other. 5. The elevator landing door according to claim 1, wherein a sealing material is attached to the lower surface of the door panel.