JP2002338160A - Landing device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a landing device for an elevator capable of achieving the desired fire and smoke block-out effect by blocking out a landing doorway in a sealed condition in case of fire. SOLUTION: A take-up mechanism 11 is mounted on an upper frame of a three-sided frame 2 with its rotation braked at normal time by a braking means 12, further a heat-resistant sheet 13 corresponding to a frontage of the three-sided frame 2 is taken up by the take-up mechanism 11 to be held at a raised position at normal time. Further a magnet attracted to an edge part in the frontage direction of the three-sided frame 2, is mounted on an edge part in the width direction of the heat-resistant sheet 13, and a weight 14 is mounted on a lower end of the heat-resistant sheet 13. Further a control device 17 is mounted to instruct the release of braking to the braking means 12 on the basis of the operation of a smoke sensor 15. Whereby the braking of the take-up mechanism 11 is released by the control device 17 on the basis of the operation of the smoke sensor 16 in case of fire, and the heat-resistant sheet 13 is lowered by the weight 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator landing apparatus that shields a landing when a fire occurs so that smoke does not enter the hoistway.

[0002]

2. Description of the Related Art FIGS.
FIG. 13 is a diagram showing a conventional elevator hall device similar to the configuration in Japanese Patent No. 47086, FIG. 13 is a front view of the hall,
14 is a sectional view taken along line AA of FIG. 13, and FIG.
FIG. 4 is a cross-sectional view taken along line B. In the drawing, reference numeral 1 denotes a landing provided on a hoistway (not shown) of an elevator, 2 denotes a three-way frame constituting an edge of an entrance 3 in the landing 1, and 4 denotes an entrance 3
The sliding door 5 for opening and closing the door 5 is a threshold forming the lower edge of the entrance 3.

Reference numerals 6 to 9 denote shielding plates, 6 is a shielding plate provided on the edge of the sliding door 4 on the side of the door pocket, and 7 is a shielding plate provided on the edge of one sliding door 4 on the door stop side. Reference numeral 8 denotes a shielding plate provided on the edge of the other sliding door 4 on the door stop side, and reference numeral 9 denotes a shielding plate provided on the upper edge of the sliding doors 4. The shielding plate forms a bent labyrinth-shaped gap between the edge of the three-sided frame 2 or another shielding plate.

The conventional elevator landing apparatus is constructed as described above, and is provided with a labyrinth-like bent by shielding plates 6 to 9 in the space between the edge of the three-way frame 2 and the sliding doors 4 or between the sliding doors 4. A gap is formed. As a result, the air circulation rate between the edge of the three-way frame 2 formed at the entrance 3 when the sliding doors 4 are closed and the sliding doors 4 is reduced, so that the flames and smoke entering the elevator hoistway in the event of a fire Is to prevent.

[0005]

In the above-described conventional elevator landing system, the labyrinth-shaped gap formed by the shielding plates 6 to 9 has an insufficient function of shielding flames and smoke when a fire occurs. In addition, it is necessary to install a fireproof shutter or the like as a building structure in a hall hall of an elevator, and there is a problem that the cost increases. In addition, due to fire prevention equipment such as fire prevention shutters, there is a problem that the installation location of the elevator and the installation location of the elevator hall are restricted due to the layout of the building.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide an elevator landing apparatus capable of achieving a required flame and smoke shielding function when a fire occurs at a landing entrance.

[0007]

In the elevator landing apparatus according to the present invention, a rotary axis is disposed in a horizontal direction in the upper frame of the three-sided frame forming the landing entrance edge, and braking means is provided. It is made up of a winding mechanism whose rotation is normally braked, and a screen that has smoke-proof and flame-proof properties, is formed in a width corresponding to the frontage of the three-sided frame, and is wound around the winding mechanism, and is always in the raised position. The held heat-resistant sheet, a magnet attached to the widthwise edge of the heat-resistant sheet and adsorbed to the edge in the frontage direction of the three-way frame when necessary, and a weight attached to the lower end of the heat-resistant sheet And a control device which is operated by the operation of the smoke detector and instructs the braking means of the winding mechanism to release the rotation braking.

Further, in the elevator hall apparatus according to the present invention, the rotary shaft is arranged on the upper frame of the three-way frame constituting the edge of the hall entrance, and the rotation axis is arranged in the horizontal direction. Is made of a screen having smoke-proofing and flame-proofing properties, and is formed in a width corresponding to the frontage of the three-sided frame, and the width direction edge is opened in the side frame of the three-sided frame, and in the side frame. A heat-resistant sheet that is formed at an intermediate position in the depth direction and is inserted into a guide groove provided in the vertical direction, is wound around a winding mechanism, and is always held at a raised position, and is attached to a lower end of the heat-resistant sheet. And a control device which is operated by the operation of the smoke detector and instructs the braking means of the winding mechanism to release the rotation braking.

Further, in the elevator landing apparatus according to the present invention, a magnet is provided which is attached to the edge of the heat-resistant sheet in the width direction and which is attracted to the side wall of the guide groove when the heat-resistant sheet is lowered.

[0010] In the elevator landing apparatus according to the present invention, the casing provided above the landing entrance and the upper frame of the three-sided frame arranged below the casing and constituting the entrance entrance edge are formed. A movable frame to be formed, holding means provided on the casing and always holding the movable frame at a predetermined position, and a screen formed of a screen having smoke-proof and flame-proof properties and having a width corresponding to the width of the frontage of the three-way frame and having a longitudinal length. One end of the heat-resistant sheet is fixed to the front edge side of the three-sided frame in the casing and the other end is fixed to the movable frame, and is always folded and stored in the casing, and the edge in the width direction of the heat-resistant sheet is A magnet is provided, which is attached to the edge of the three-way frame in the direction of the frontage when necessary, and a control device which is activated by the operation of the smoke detector and instructs the holding means to release the holding.

Further, in the elevator landing apparatus according to the present invention, the casing provided at the upper part of the landing entrance and the upper frame of the three-sided frame which is disposed below the casing and constitutes the entrance entrance edge are formed. A movable frame to be formed, holding means provided on the casing and always holding the movable frame at a predetermined position, and a screen formed of a screen having smoke shielding and flame shielding properties. The direction edge is opened in the side frame of the three-way frame, is formed at a middle position in the depth direction of the side frame, is inserted into a guide groove provided in the vertical direction, one end of a longitudinal direction is fixed to the casing, and the other end is a movable frame. And a heat-resistant sheet which is normally folded and stored in the casing, and a control device which is operated by the operation of the smoke detector and instructs the holding means to release the holding.

Further, in the elevator landing apparatus according to the present invention, a magnet is provided which is attached to the widthwise edge of the heat-resistant sheet and which is attracted to the side wall of the guide groove when the heat-resistant sheet is lowered.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 and 2
FIG. 1 is a view showing an example of an embodiment of the present invention. FIG. 1 is a longitudinal sectional side view of a landing, and FIG. 2 is a sectional view taken along line CC of FIG. In the figure, 1 is a landing provided on a hoistway (not shown) of an elevator, 2 is a three-sided frame constituting an edge of an entrance 3 in the landing 1, 4 is a double sliding door for opening and closing the entrance 3 and 5 is a door of the entrance 3 This is the threshold that forms the lower edge. Reference numeral 10 denotes a casing provided above the upper frame of the three-way frame 2, and has a gap along the front edge of the upper frame.

Reference numeral 11 denotes a winding mechanism, which is provided in the casing 10 and has a rotation axis arranged in a horizontal direction, and a braking means 12 comprising an electromagnetic mechanism is provided to constantly brake the rotation. Reference numeral 13 denotes a heat-resistant sheet made of a screen having smoke-proof and flame-proof properties. The heat-resistant sheet 13 is formed in a width corresponding to the width of the three-way frame 2 and is wound around the winding mechanism 11, and the winding mechanism 11 is normally braked. It is held in the ascending position.

Numeral 14 denotes a weight attached to the end of the heat-resistant sheet 13 on the side of the anti-winding mechanism 11 and fitted into the casing 10 by forming a gap in the gap. The heat-resistant sheet 13 is attached to the front edge of the three-way frame 2 and is attached to the front edge of the three-way frame 2 when the heat-resistant sheet 13 is lowered. Reference numeral 16 denotes a smoke sensor embedded in the upper frame of the three-way frame 2, and 17 denotes a control device connected to the braking means 12 and the smoke sensor 16.

In the elevator landing apparatus constructed as described above, the heat-resistant sheet 13 is normally wound by the winding mechanism 11, and the winding mechanism 11 is normally braked by the urged braking means 12. It is held in the raised position. Further, when a fire occurs, the control device 17 is operated by the operation of the smoke detector 16 and the braking means 12 is deenergized.
As a result, the braking of the winding mechanism 11 is released, and the heat-resistant sheet 13 is lowered by the weight 14 against the attraction force of the magnet 15 with the front edge of the three-way frame 2, and the weight 14 is moved to the floor of the landing 1. , The doorway 3 is shielded.

Further, the magnet 1 of the heat-resistant sheet 13 which has been lowered
5 adsorbs to the front edge of the three-sided frame 2, and the entrance 3 is shielded in a sealed state, so that a required flame and smoke shielding function at the time of a fire can be obtained. For this reason, it is not necessary to install a fireproof shutter or the like as a building structure in the hall hall of the elevator, and the cost can be reduced. In addition, the installation location of the elevator is not restricted due to the layout of the building side for fire prevention equipment such as a fire shutter, and the degree of freedom in selecting the installation location of the elevator can be improved.

Further, when the braking means 12 is deenergized, the braking of the winding mechanism 11 is released, so that the heat-resistant sheet 13 is lowered even by a power failure due to the occurrence of a fire.
Therefore, even when the smoke detector 16 fails and does not operate when a fire occurs, the heat-resistant sheet 13 descends. For this reason, it is possible to obtain a required function of shielding flame and smoke when a fire occurs.

Embodiment 2 FIG. 3 to 5 are views showing an example of another embodiment of the present invention. FIG. 3 is a longitudinal side view of a landing, FIG. 4 is a sectional view taken along line DD of FIG. 3, and FIG. It is an E section enlarged view. In the drawings, the same reference numerals as those in FIGS. 1 and 2 denote corresponding parts, and a reference numeral 18 denotes a casing provided above the upper frame of the three-side frame 2, which is formed at an intermediate position in the depth direction of the three-way frame 2 and has an entrance. A gap extending in three width directions is provided.

Reference numeral 19 denotes a guide groove which is opened in the side frame of the three-way frame 2 and provided in the vertical direction. The guide groove 19 is formed at an intermediate position in the depth direction of the side frame of the three-way frame 2 at a position corresponding to the gap of the casing 18. The heat-resistant sheet 13 is arranged so that the width on the back side is wider than the width of the opening. Reference numeral 20 denotes a hook, which is a guide groove 19 of the heat-resistant sheet 13.
The guide groove 19 is slidably engaged with a step between a wide portion and a narrow portion of the guide groove 19.

Reference numeral 21 denotes a shielding plate which projects from the edge of the guide groove 19 on the side opposite the sill 5 on the opening side toward the insertion portion of the heat-resistant sheet 13 into the guide groove 19, and has a total height of the guide groove 19. Are arranged over. In addition, the guide groove 19 is formed by the side frame of the three-sided frame 2 composed of two parts of the front structure and the rear structure in the depth direction, and is formed between the two. Then, the two are connected by a guide member 22 having a cross-sectional groove shape that forms a wide portion of the guide groove 19, and is formed as shown in FIG.

In the elevator landing apparatus constructed as described above, the heat-resistant sheet 13 is always wound up by the winding mechanism 11 and the braking means 12 is always energized.
As a result, the winding mechanism 11 is braked and held at the raised position. Further, when a fire occurs, the control device 17 is operated by the operation of the smoke detector 16 and the braking means 12 is deenergized. Thereby, the braking of the winding mechanism 11 is released, and the heat-resistant sheet 13 is lowered by the weight 14, and the weight 14
Arrives at the floor of the landing 1 to shield the entrance 3.

The lower heat-resistant sheet 13 and the insertion portion of the weight 14 into the guide groove 19 face the shielding plate 21 provided at the opening of the guide groove 19, and the entrance 3 is shielded in a sealed state. You. Therefore, detailed description is omitted, but FIG.
5 to FIG. 5, the same operation as the embodiment of FIG. 1 and FIG. 2 can be obtained. In the embodiment of FIGS. 3 to 5, the descending heat-resistant sheet 13 is
, It is possible to smoothly operate in a stable state and obtain a good shielding function of the entrance 3.

Embodiment 3 FIG. FIG. 6 also shows an example of another embodiment of the present invention, and FIG. 6 is a diagram corresponding to FIG. 5 described above. In addition, other than FIG. 6, an elevator hall device is comprised like FIG. 3 to FIG. 5 mentioned above. In the drawing, the same reference numerals as those in FIGS. 3 to 5 described above indicate corresponding parts, and 23 is a magnet,
The guide groove 1 is mounted on the edge of the heat-resistant sheet 13 in the width direction.
9 is arranged to face the edge of the sill 5 on the opening side, and is adsorbed to the edge of the guide groove 19 on the side of the sill 5 when the heat-resistant sheet 13 is lowered.

In the elevator landing apparatus configured as described above, the embodiment shown in FIGS.
3 to 5, the heat-resistant sheet 13 descends against the attraction force of the magnet 15 when necessary, and the weight 14 reaches the floor of the landing 1 so that the entrance 3 is shielded. .
Therefore, although detailed description is omitted, the same operation as the embodiment of FIGS. 1 and 2 and the embodiment of FIGS. 3 to 5 can be obtained in the embodiment of FIG.

Embodiment 4 7 to 9 also show an example of another embodiment of the present invention. FIG. 7 is a longitudinal side view of a landing, FIG. 8 is a sectional view taken along line FF of FIG. 7, and FIG. It is a figure explaining a descent situation of a heat resistant sheet. In the figure, the same reference numerals as those in FIG. 1 and FIG.
Reference numeral 24 denotes a movable frame which constitutes the upper frame of the three-way frame 2 and has an L-shaped cross section, and a casing 25 is provided on the upper side.

Reference numeral 26 denotes a rolling wheel, which is disposed in the L-shaped corner of the movable frame 24 and is pivoted via a horizontal axis so that the heat-resistant sheet 13 is provided.
Rolls the front edge in the frontage direction of the three-sided frame 2 when descending. 27
Is a holding means composed of an electromagnetic mechanism. The holding means is provided on the front edge side of the three-way frame 2 and the sill 5 side of the three-way frame 2 in the casing 25, and holds the edges of the movable frame 24 facing each other when biased. Reference numeral 13 denotes the above-described heat-resistant sheet, one longitudinal end of which is fixed to the front edge side of the three-sided frame 2 in the casing 25, and the other end is fixed to the edge of the movable frame 24 on the threshold 5 side.
Usually, it is folded and stored on the movable frame 24, that is, in the casing 25.

Also in the elevator landing apparatus constructed as described above, the heat-resistant sheet 13 is always stored in the casing 25, and the movable frame 24 is always placed on the three-way frame 2 by the biased holding means 27. It is held at the frame position.
Further, when a fire occurs, the control device 17 operates by the operation of the smoke detector 16 and the holding means 27 is deenergized. As a result, the heat-resistant sheet 13 descends due to the lowering of the movable frame 24 due to the release of the holding of the movable frame 24, and the movable frame 24 reaches the floor of the landing 1, and as shown in FIG.
Is shielded.

Therefore, although detailed description is omitted, FIG.
9 to FIG. 9, the same operation as the embodiment of FIG. 1 and FIG. 2 can be obtained. In the embodiment shown in FIGS. 7 to 9, the heat-resistant sheet 13 is always in the casing 2.
Since the casing 25 is folded and stored, the height of the casing 25 can be reduced, and restrictions on the installation space of the hall device in the height direction are reduced.

Embodiment 5 10 to 12 also show an example of another embodiment of the present invention. FIG. 10 is a longitudinal side view of a landing, FIG. 11 is a sectional view taken along line GG of FIG.
FIG. 11 is a view for explaining the lowering state of the heat-resistant sheet in FIG. 10. In the drawings, the same reference numerals as those in FIGS. 1 and 2, FIGS. 3 to 5, and FIGS. 7 to 9 denote corresponding parts.

The elevator landing apparatus according to the embodiment shown in FIGS. 10 to 12 has a heat-resistant sheet 13 which is connected to the movable frame 24 in the embodiment shown in FIGS. And FIGS. 3 to 5
Engaging piece 2 engaged with guide groove 19 in the embodiment of FIG.
It guides the heat-resistant sheet 13 descending by 0. Therefore, although detailed description is omitted, the same operations as those of the embodiments of FIGS. 3 to 5 and the embodiments of FIGS. 7 to 9 can be obtained in the embodiments of FIGS.

Embodiment 6 FIG. In the above-described embodiment of FIGS. 10 to 12, the magnet 23 of the above-described embodiment of FIG. 6 is provided, and the edge of the sill 5 on the opening side of the guide groove 19 when the heat-resistant sheet 13 is lowered. Has a structure in which the magnet 23 is attracted. Therefore, detailed description is omitted, but in the sixth embodiment, the embodiments of FIGS.
The same operation as the embodiment of FIG. 6 and the embodiments of FIGS. 7 to 9 can be obtained.

[0033]

As described above, the present invention is provided on the upper frame of the three-sided frame constituting the entrance / exit edge, the rotation axis is arranged in the horizontal direction, and the braking means is provided to always stop the rotation. And a heat-resistant sheet formed to have a width corresponding to the width of the three-way frame, wound around the winding mechanism, and normally held at the ascending position, and an edge of the heat-resistant sheet in the width direction. A magnet which is attached to the front edge of the three-way frame when necessary and which is attached to the front edge of the three-way frame, a weight which is attached to the lower end of the heat-resistant sheet, and is operated by the operation of the smoke detector to be rotationally braked by the braking means of the winding mechanism And a control device for instructing release.

Thus, in the event of a fire, the control device operates by the operation of the smoke detector to deactivate the braking means.
The braking of the winding mechanism is released, and the heat-resistant sheet descends against the attraction force between the magnet and the three-sided frame by the weight, and the weight arrives at the floor of the hall, so that the landing entrance is blocked. Further, since the magnet of the lowered heat-resistant sheet is attracted to the three-sided frame and the entrance and exit are sealed in a sealed state, it is possible to obtain a required flame and smoke shielding function when a fire occurs. For this reason, it is not necessary to install a fireproof shutter or the like as a building structure in the hall hall of the elevator, and the cost can be reduced. In addition, the installation location of the elevator is not restricted due to the layout of the building side for fire prevention equipment such as a fire prevention shutter, so that the degree of freedom in selecting the installation location of the elevator is improved.

Further, as described above, the present invention is provided on the upper frame of the three-sided frame constituting the entrance / exit edge, the rotation axis is arranged in the horizontal direction, and the braking means is provided so that the rotation is always braked. The winding mechanism and the widthwise edge formed in a width corresponding to the frontage of the three-sided frame, opened in the side frame of the three-sided frame, formed at an intermediate position in the depth direction of the side frame, and provided in the vertical direction. The heat-resistant sheet inserted in the guide groove, wound around the winding mechanism and normally held at the ascending position, the weight attached to the lower end of the heat-resistant sheet, and activated by the operation of the smoke detector And a control device for instructing the braking means of the winding mechanism to release the rotation braking.

Thus, in the event of a fire, the control device operates by the operation of the smoke detector to deactivate the braking means.
The braking of the winding mechanism is released, and the heat-resistant sheet descends in the guide groove by the weight, and the weight reaches the floor of the hall, so that the landing entrance is blocked. For this reason, it is possible to obtain a required function of shielding flame and smoke when a fire occurs.
Further, it is not necessary to install a fireproof shutter or the like as a building structure in the hall hall of the elevator, so that costs can be reduced. In addition, the installation location of the elevator is not restricted due to the layout of the building side for fire prevention equipment such as a fire prevention shutter, so that the degree of freedom in selecting the installation location of the elevator is improved.

Further, as described above, the present invention is provided with a magnet which is attached to the edge of the heat resistant sheet in the width direction and which is attracted to the side wall of the guide groove when the heat resistant sheet is lowered.

Thus, when a fire occurs, the control device operates by the operation of the smoke detector, and the braking means is deenergized.
The braking of the winding mechanism is released, and the heat resistant sheet descends in the guide groove against the attraction force between the magnet and the side wall of the guide groove by the weight, and the weight reaches the landing floor by the weight reaching the floor of the landing. Is shielded. Further, since the magnet of the lowered heat-resistant sheet is attracted to the side wall of the guide groove and the entrance and exit are shielded in a sealed state, it is possible to obtain a required flame and smoke shielding function when a fire occurs. Further, it is not necessary to install a fireproof shutter or the like as a building structure in the hall hall of the elevator, so that costs can be reduced. In addition, the installation location of the elevator is not restricted due to the layout of the building side for fire prevention equipment such as a fire prevention shutter, so that the degree of freedom in selecting the installation location of the elevator is improved.

Further, as described above, the present invention forms a casing provided at an upper portion of a landing entrance and an upper frame of a three-way frame which is disposed below the casing and constitutes a landing entrance edge. A movable frame, holding means provided on the casing and always holding the movable frame at a predetermined position, one longitudinal end fixed to the front edge side of the three-sided frame in the casing, and the other end fixed to the movable frame; The heat-resistant sheet folded and stored inside, the magnet attached to the edge of the heat-resistant sheet in the width direction and adsorbed to the edge in the frontage direction of the three-way frame when necessary, and the operation of the smoke detector And a control device which operates to instruct the holding means to release the holding.

Thus, in the event of a fire, the control device operates by the operation of the smoke detector to deactivate the holding means.
The holding of the movable frame is released, the heat-resistant sheet is lowered by the movable frame against the attraction force between the magnet and the three-way frame, and the movable frame reaches the floor of the landing, thereby shielding the entrance / exit of the landing. Further, since the magnet of the lowered heat-resistant sheet is attracted to the three-sided frame and the entrance and exit are sealed in a sealed state, it is possible to obtain a required flame and smoke shielding function when a fire occurs. For this reason, it is not necessary to install a fireproof shutter or the like as a building structure in the hall hall of the elevator, and the cost can be reduced. In addition, the installation location of the elevator is not restricted due to the layout of the building side for fire prevention equipment such as a fire prevention shutter, so that the degree of freedom in selecting the installation location of the elevator is improved.

Further, as described above, the present invention forms a casing provided at an upper portion of a landing entrance and an upper frame of a three-sided frame which is disposed below the casing and constitutes a landing entrance edge. A movable frame, holding means provided on the casing and always holding the movable frame in a predetermined position, and a widthwise edge formed in a width corresponding to a frontage of the three-way frame, and opened in the side frame of the three-way frame. It is inserted into a vertically extending guide groove formed at an intermediate position in the depth direction of the frame, one longitudinal end is fixed to the casing, the other end is fixed to the movable frame, and is normally folded and stored in the casing. And a control device which operates by the operation of the smoke detector and instructs the holding means to release the holding.

Thus, in the event of a fire, the control device operates by the operation of the smoke detector to deactivate the holding means.
The holding of the movable frame is released, the heat-resistant sheet descends in the guide groove by the movable frame, and the movable frame reaches the floor of the landing, so that the landing entrance is blocked. For this reason, it is possible to obtain a required function of shielding flame and smoke when a fire occurs. Further, it is not necessary to install a fireproof shutter or the like as a building structure in the hall hall of the elevator, so that costs can be reduced. In addition, the installation location of the elevator is not restricted due to the layout of the building side for fire prevention equipment such as a fire prevention shutter, so that the degree of freedom in selecting the installation location of the elevator is improved.

Further, as described above, the present invention is provided with a magnet which is attached to the edge of the heat resistant sheet in the width direction and which is attracted to the side wall of the guide groove when the heat resistant sheet is lowered.

Thus, when a fire occurs, the control device operates by the operation of the smoke detector and the holding means is deenergized.
The holding of the movable frame is released, and the heat-resistant sheet descends in the guide groove against the attraction force between the magnet and the side wall of the guide groove by the movable frame, and the movable frame reaches the floor of the landing, so that the landing entrance is opened. Be shielded. Further, since the magnet of the lowered heat-resistant sheet is attracted to the side wall of the guide groove and the entrance and exit are shielded in a sealed state, it is possible to obtain a required flame and smoke shielding function when a fire occurs. Also, it is not necessary to install a fireproof shutter or the like as a building structure in the hall hall of the elevator, so that costs can be reduced. In addition, the installation location of the elevator is not restricted due to the layout of the building side for fire prevention equipment such as a fire prevention shutter, so that the degree of freedom in selecting the installation location of the elevator is improved.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, and is a longitudinal side view of a landing.

FIG. 2 is a sectional view taken along line CC of FIG.

FIG. 3 is a view showing the second embodiment of the present invention, and is a longitudinal side view of a landing.

FIG. 4 is a sectional view taken along line DD of FIG. 3;

FIG. 5 is an enlarged view of a portion E in FIG. 4;

FIG. 6 is a view showing a third embodiment of the present invention, and is a view corresponding to FIG. 5 described above.

FIG. 7 is a view showing a fourth embodiment of the present invention, and is a longitudinal side view of a landing.

FIG. 8 is a sectional view taken along line FF of FIG. 7;

FIG. 9 is a view for explaining a lowering state of the heat-resistant sheet in FIG. 7;

FIG. 10 is a view showing a fifth embodiment of the present invention, and is a longitudinal side view of a landing.

FIG. 11 is a sectional view taken along line GG of FIG. 10;

FIG. 12 is a view for explaining the lowering state of the heat-resistant sheet in FIG. 10;

FIG. 13 is a diagram showing a conventional elevator hall device, and is a front view of the hall.

FIG. 14 is a sectional view taken along line AA of FIG. 13;

FIG. 15 is a sectional view taken along line BB of FIG. 13;

[Explanation of symbols]

1 hall, 2 three-way frame, 3 doorway, 11 winding mechanism, 12 braking means, 13 heat resistant sheet,
14 weight, 15 magnet, 16 smoke detector, 1
7 control device, 19 guide groove, 23 magnet, 24
Movable frame, 25 casing, 27 holding means.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nobuhiro Nishimura 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Inventor Masato Hanashima 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Rishi Electric Co., Ltd. (72) Inventor Osamu Kanemori 2-3-2 Marunouchi, Chiyoda-ku, Tokyo F-term (reference) 3F304 CA02 EA01 3F306 AA03

Claims (6)

[Claims] A winding mechanism mounted on an upper frame of a three-way frame constituting a landing entrance / exit edge, having a rotation axis arranged in a horizontal direction, provided with a braking means, and normally stopped to rotate;
A heat-resistant sheet made of a screen having a smoke-proofing property and a flame-proofing property, formed in a width corresponding to the frontage of the three-sided frame, wound around the winding mechanism, and always held at an ascending position; The magnet is attached to the edge in the width direction of the sheet and is attracted to the edge in the frontage direction of the three-way frame when necessary, the weight attached to the lower end of the heat-resistant sheet, and operates by the operation of the smoke detector. And a controller for instructing the braking means of the winding mechanism to release the rotational braking. 2. A winding mechanism which is mounted on an upper frame of a three-way frame constituting a landing entrance / exit edge, has a rotation axis arranged in a horizontal direction, is provided with a braking means, and is normally braked for rotation.
It is made of a screen having smoke-proofing and flame-proofing properties, and is formed in a width corresponding to the frontage of the three-sided frame, and has a width direction edge, which is opened in a side frame of the three-sided frame and at an intermediate position in the depth direction of the side frame. A heat-resistant sheet that is formed and inserted in a guide groove provided in the vertical direction, is wound around the winding mechanism, and is normally held at the ascending position, and a weight attached to the lower end of the heat-resistant sheet. A landing device for an elevator, comprising: a control device which is operated by the operation of the smoke detector and instructs the braking means of the winding mechanism to release rotation braking. 3. The elevator according to claim 2, further comprising a magnet attached to an edge in a width direction of the heat-resistant sheet and attracting to a side wall of the guide groove when the heat-resistant sheet is lowered. Landing equipment. 4. A casing provided at an upper portion of the landing entrance, a movable frame disposed below the casing and forming an upper frame of a three-sided frame constituting the landing entrance edge,
A holding means that is provided on the casing and always holds the movable frame at a predetermined position, and is formed of a screen having a smoke shielding property and a flame shielding property, and is formed to have a width corresponding to a frontage of the three-way frame, and has one longitudinal end. A heat-resistant sheet fixed to the front edge side of the three-sided frame and fixed to the movable frame at the other end of the casing, and normally folded and stored in the casing, and an edge in a width direction of the heat-resistant sheet. A landing device for an elevator equipped with a magnet attached to the front edge of the three-way frame when necessary, and a control device which is activated by the operation of the smoke detector and instructs the holding means to release the holding. . 5. A casing provided at an upper portion of a landing doorway, a movable frame disposed below the casing and forming an upper frame of a three-sided frame constituting the landing entrance edge portion,
A holding means provided on the casing and always holding the movable frame at a predetermined position, and a screen having a smoke shielding property and a flame shielding property and formed in a width corresponding to the frontage of the three-way frame, and a width direction edge portion. Is opened in a side frame of the three-sided frame, is inserted into a guide groove formed at an intermediate position in the depth direction of the side frame and provided in a vertical direction, one end of a longitudinal direction is fixed to the casing, and the other end is movable. A landing of an elevator equipped with a heat-resistant sheet fixed to a frame and normally folded and stored in the casing, and a control device which is operated by the operation of the smoke detector and instructs the holding means to release holding. apparatus. 6. The elevator according to claim 5, further comprising a magnet attached to an edge of the heat-resistant sheet in a width direction and attracting to a side wall of the guide groove when the heat-resistant sheet is lowered. Landing equipment.