JP2004052420A - Fire door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire door which enables a user of a wheelchair to escape easily by himself/herself, by automatically installing a slope for connecting an escape hatch of a fire door body with a floor surface of a passage. <P>SOLUTION: The fire door body 1 is equipped with a panel body 5 which is to be turnably supported on the lower-end side of the escape hatch 1a. The panel body 5 is turned upward so as to be held in the state of covering the lower part of the door body 4, at the closing of a door body 4 for escape, and turned downward by opening the door body 4, so as to form the slope for connecting the escape hatch 1a with the floor surface 3b. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fire door in which a fire door is normally kept open with a passage open, and when a fire occurs, the fire door is automatically deployed in the passage to close the passage.
[0002]
[Prior art]
Inside a predetermined building, a fire door is installed to close a passage with a fire door when a fire occurs and to separate a fire space from a non-fire space, thereby expanding a fire range and preventing smoke from leaking. The fire door is normally stored, for example, in a recess provided on the side wall of the passage so as not to obstruct traffic. Is to be closed. With respect to a fire door provided in a passage leading to the ground, an evacuation opening (pass door) through which an evacuee can directly open by hand and pass through is formed through the fire door body.
[0003]
[Problems to be solved by the invention]
By the way, when the evacuee is a user of a wheelchair, if there is a step between the lower end of the evacuation opening and the floor of the passage, it is almost impossible for the wheel to be caught and escape alone. In addition, in the case of the elderly, the feet cannot be raised high, and if the steps are large, it is difficult to escape from the evacuation exit.
[0004]
As a solution to these problems, it is conceivable to cut off the horizontal frame member (stile) on the lower end side of the evacuation opening. However, since this reduces the strength of the evacuation opening, the evacuation opening is distorted and the evacuation door is displaced. May not be able to be opened. Also, if the evacuation door is not completely closed because it is pushed by the pressure of hot air due to a fire, etc., the stave can be expected to play the role of a fire barrier and prevent the spread of fire on the floor. Sometimes it is set to be large.
[0005]
Therefore, a slope base that connects the lower end of the evacuation exit and the floor of the aisle is stored near the fire door, and when a fire occurs, the slope base is removed from the storage location and installed in the evacuation exit. There is a method. However, there is no guarantee that such an installation work is actually performed. On the other hand, it is impossible for a wheelchair user or the like to install the slope by himself. Further, it is difficult to secure a storage place for the slope table in a passage or the like.
[0006]
In view of such circumstances, the present invention eliminates the need to provide a special storage space for a slope connecting an evacuation opening of a fire door and a floor of a passage, and enables a wheelchair to be automatically installed. The present invention provides a fire door having an evacuation opening that allows a user or the like to escape alone.
[0007]
[Means for Solving the Problems]
In the invention according to claim 1, an evacuation port closed by an evacuation door body is formed through the fire door body, and a step is formed between the evacuation port and a floor surface of a passage in which the fire door body is installed. A fire door, wherein the fire door body includes a panel body rotatably supported at a lower end side of the evacuation opening, and the panel body is provided when the evacuation door body is closed. The evacuation door is held so as to cover the lower part of the evacuation door by being turned upward, and is turned downward by opening of the evacuation door to form a slope connecting the evacuation opening and the floor surface. A fire door is provided.
[0008]
The invention according to claim 2 is that the panel body is attracted to the evacuation door body by the magnetic force of a magnet attached to the panel body and / or the evacuation door body, thereby lowering the lower part of the evacuation door body. The fire door according to claim 1, which is held so as to cover.
[0009]
According to a third aspect of the present invention, the lower portion of the evacuation door body is locked by the evacuation door body with a locking member interposed between the panel body and the evacuation door body. The fire door according to claim 1, which is held so as to cover.
[0010]
The invention according to claim 4 is a fire door, wherein the evacuation door is openable only in one direction, and wherein the panel is provided on a side on which the evacuation door is openable, 2. The fire protection device according to claim 1, wherein the evacuation door is held so as to cover a lower portion of the evacuation door by being attracted to the fire door by magnetic force of a magnet attached to the fire door. Provide the door.
[0011]
The invention according to claim 5 is a fire door in which the evacuation door can be opened only in one direction, wherein the panel provided on the side where the evacuation door can be opened includes the panel and the panel. 2. The fire prevention device according to claim 1, wherein the evacuation door is held so as to cover a lower portion of the evacuation door by being locked to the fire door by a locking member interposed between the fire doors. 3. Provide the door.
[0012]
According to the fire door according to any one of claims 1 to 5, since the slope is formed in conjunction with the opening of the evacuation door, the wheelchair user can easily escape alone. It works. In addition, since the panel body forming the slope is held so as to cover the evacuation door body, that is, along the fire door body, there is no need to provide a special storage space for the slope.
[0013]
In the invention according to claim 6, an evacuation opening closed by an evacuation door is formed through the fire door, and a step is formed between the evacuation opening and a floor of a passage in which the fire door is installed. A fire door, wherein the fire door body includes a panel body that can be held in a folded state along the fire door body, and wherein the panel body is provided with the evacuation door body. By operating a release knob, the fire door is developed from the folded state to form a slope connecting the evacuation opening and the floor surface.
[0014]
The invention according to claim 7 is such that the panel body follows the fire door body by locking a locking part provided on the evacuation door body with a locked part provided on the panel body. The locking portion is connected to the opening knob, and the locking to the locked portion is released by operating the opening knob. A fire door according to claim 6 is provided.
[0015]
The invention according to claim 8, wherein the panel body is folded along the fire door body by being attracted to the evacuation door body by a magnetic force of a magnet attracted to an inner wall surface of the evacuation door body. 7. The magnet according to claim 6, wherein the magnet is connected to the opening knob, and is separated from an inner wall surface of the evacuation door by operating the opening knob. Provide fire doors.
[0016]
According to the fire door according to any one of claims 6 to 8, since the slope is formed in conjunction with the operation of the opening knob of the evacuation door, the user of the wheelchair can escape alone. This has the effect of being easy. Further, since the panel body forming the slope is held along the fire door body, there is no need to provide a special storage space for the slope.
[0017]
According to a ninth aspect of the present invention, an evacuation opening closed by the evacuation door is formed through the fire door, and a step is formed between the evacuation opening and a floor of a passage in which the fire door is installed. A fire door, wherein the fire door body includes a panel body that can be held in a folded state along the fire door body, and the panel body includes the panel body, the fire protection An actuator disposed on the door body and / or the evacuation door body and operated in the event of a fire is deployed from the folded state to form a slope connecting the evacuation opening and the floor surface. To provide a fire door.
[0018]
According to a tenth aspect of the present invention, the panel body is attracted to the fire door and / or the evacuation door by a magnetic force of a magnet attached to the panel, the fire door and / or the evacuation door. The actuator is the electric solenoid, which is held in a folded state along the fire door body by being attached, and the panel body is moved by the movement of the movable iron core to the fire door body or the evacuation door body. 10. The fire door according to claim 9, wherein the fire door is separated from the fire door.
[0019]
According to the fire door according to the ninth or tenth aspect of the present invention, the slope is formed by the operation of the actuator when a fire occurs, so that the wheelchair user can easily escape alone. Further, since the panel body forming the slope is held along the fire door body, there is no need to provide a special storage space for the slope.
[0020]
In the invention of claim 11, an evacuation opening closed by the evacuation door is formed through the fire door, and a step is formed between the evacuation opening and a floor of a passage in which the fire door is installed. A fire door, wherein the fire door is attached to the fire door and / or the evacuation door by a magnetic force of an electromagnet attached to the panel body, the fire door, and / or the evacuation door. A panel body that can be held in a folded state along the fire door body by being sucked is provided, and when a fire occurs, the power supply to the electromagnet is cut off. And forming a slope connecting the evacuation exit and the floor by being unfolded from the folded state.
[0021]
According to a twelfth aspect of the present invention, there is provided the fire door according to the eleventh aspect, wherein energization of the electromagnet is interrupted based on a fire detection signal when a fire occurs.
[0022]
According to a thirteenth aspect of the present invention, energization of the electromagnet is provided on the panel body, the fire door and / or the evacuation door by moving the fire door from an open position to a closed position when a fire occurs. 12. The fire door according to claim 11, wherein the power supply connector is disconnected when a power supply connector provided on the fixed side of the closed position is disconnected from the power supply connector.
[0023]
According to the fire door according to any one of claims 11 to 13, since the energization to the electromagnet holding the panel is cut off when a fire occurs, the slope is formed. This has the effect of facilitating independent escape. Further, since the panel body forming the slope is held along the fire door body, there is no need to provide a special storage space for the slope.
[0024]
In the invention of claim 14, an evacuation opening closed by the evacuation door is formed through the fire door, and a step is formed between the evacuation opening and a floor of a passage in which the fire door is installed. A fire door, wherein the fire door body includes a panel body that can be held in a folded state along the fire door body, and the panel body releases the holding. Thereby, the fire door is characterized in that it is unfolded from the folded state to form a slope connecting the evacuation opening and the floor surface.
[0025]
In the invention according to claim 15, an evacuation opening closed by an evacuation door is formed through the fire door, and a step is formed between the evacuation opening and a floor of a passage in which the fire door is installed. A fire door, wherein the fire door body is rotatably supported at a lower end side of the evacuation opening and is turned upward so that a panel body can be held along the fire door body. The fire prevention door is provided, wherein the panel body is rotated downward by releasing the holding to form a slope connecting the evacuation opening and the floor surface.
[0026]
According to the fire door according to the fourteenth or fifteenth aspect of the present invention, the slope can be easily formed only by releasing the holding, so that the user of the wheelchair or the like can easily escape alone. . Further, since the panel body forming the slope is held along the fire door body, there is no need to provide a special storage space for the slope.
[0027]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0028]
(First embodiment of the present invention)
FIG. 1 to FIG. 3 show a first embodiment of the present invention. 1A and 1B are diagrams showing the entire configuration of a fire door, in which FIG. 1A shows a normal state (when a passage is opened), FIG. 1B shows a case where a fire occurs (when a passage is closed), and FIG. This is a state when the shutter is opened. FIG. 2 is a perspective view for explaining the operation of the fire door when the evacuation door is opened, and FIG. 3 is a diagram showing a cross section taken along line AA of FIG.
[0029]
The fire door 1 is normally stored in a storage frame 2b surrounding a recess 2a formed in the wall surface 2 as shown in FIG. 1A, and an electromagnetic lock (not shown) provided in the recess 2a. It is fixed by. When the fire occurs, the electromagnetic lock of the fire door 1 is released based on a signal transmitted from a fire detection device (not shown). The fire door 1 is urged in the closing direction. When the electromagnetic lock is released, the fire door 1 is deployed in the passage 3 and fitted into the fire door receiver 3a to close the passage 3 (FIG. 1B). ). The holding force of the electromagnetic lock is set to such a degree that it can be released by manually moving the fire door 1.
[0030]
The fire door 1 is formed with an evacuation opening 1 a through which a person who has escaped late after the passage 3 is closed passes therethrough. The evacuation opening 1 a is closed by an evacuation door 4. The evacuation door 4 can be manually opened by operating the opening / closing knob 4a, and after opening, the evacuation door 1a is automatically closed by being urged by a door closer (not shown). . Since there is the horizontal frame member 1b below the evacuation opening 1a, there is a step between the evacuation opening 1a and the floor 3b of the passage 3.
[0031]
The fire door 1 includes a panel 5 that is supported by a hinge member 5a at the lower end of the evacuation opening 1a so as to be vertically rotatable. The panel body 5 is rotated upward when the evacuation door 4 is closed, so that the side end 5b is in contact with a stopper (fire door 1) on the side of the evacuation opening 1a. Cover the lower part of the evacuation door 4. The center of gravity of the panel body 5 is set so that the panel body 5 naturally pivots downward when no holding force is applied from the outside.
[0032]
The evacuation door 4 is recessed inward from the general surface of the fire door 1, but the surface of the panel body 5 facing the evacuation door 4 has a convex portion that contacts the evacuation door 4. 5c are formed. As shown in FIG. 3, a magnet 5d is attached to the inner wall surface of the projection 5c so as to be in close contact with a bracket 5e. Therefore, the panel body 5 is held so as to cover the lower part of the evacuation door body 4 by being attracted to the steel evacuation door body 4 by the magnetic force of the magnet 5d when rotated upward. become. When the evacuation door 4 is flush with the fire door 1, the projection 5c need not be provided.
[0033]
The operation of the fire door according to the first embodiment will be described. The electromagnetic lock of the fire door 1 is released based on the fire detection signal, and the passage 3 is closed. After that, when a person who has been late to escape opens the evacuation door body 4 in the direction of the outline arrow in FIG. 2, the panel body 5 on the near side of the paper in FIG. 2 (the left side in FIG. 3) is stopped by the stopper. Since the rotation of the door body 4 in the opening direction is prevented, the door body 4 is forcibly separated from the evacuation door body 4 and loses the holding force of the magnet 5d and rotates downward.
[0034]
Since the lower end side of the panel body 5 on the back side of the paper surface in FIG. 2 (right side in FIG. 3) is supported by the hinge member 5a, the panel body 5 is pushed down by the evacuation door body 4 and loses the holding force by the magnet 5d. To rotate downward. Then, the free ends of the two panel bodies 5 are in contact with the floor 3b of the passage and form a slope connecting the evacuation opening 1a and the floor 3b (two-dot chain line in FIGS. 2 and 3).
[0035]
The automatically formed slope makes it easy for the user of the wheelchair to pass through the evacuation opening 1a, and can escape alone even when a fire occurs. In addition, since the panel body 5 forming the slope is normally held so as to cover the evacuation door body 4, that is, along the fire door body 1, it is not necessary to provide a storage space for the slope. When retrofitting a conventionally installed fire door to the fire door according to the present embodiment, it is only necessary to attach the panel body 5 having the magnet 5d, and no special control device or power supply is required. It can be implemented at cost.
[0036]
In the present embodiment, the magnet 5d is attached to the inner wall surface of the hollow panel body 5 for appearance and prevention of damage to the magnet. You may make it attach to a wall surface. The magnet can be attached not only to the panel body 5 but also to the evacuation door body 4 or to both the evacuation door body 4 and the panel body 5. Further, the partner to which the magnet is attracted need not be entirely made of steel, and only the part where the magnet is attracted may be made of steel. The magnet may be not only a permanent magnet but also an electromagnet.
[0037]
In the present embodiment, the convex portion 5c is provided to make the panel body 5 and the evacuation door body 4 adhere to each other. However, when attaching the magnet to the panel body 5 or the outer wall surface of the evacuation door body 4, the spacer is provided. If the height is adjusted by sandwiching or the like, the convex portion 5c is unnecessary. In order to ensure the attraction by the magnet, it is necessary to make the attraction surfaces adhere to each other, but if the spacer is made of a cushioning material, the magnet will follow and adhere to the mating surface, so the dimensional accuracy of the panel body and mounting variations Management becomes easier.
[0038]
In the present embodiment, the panel body 5 is held by the magnet 5d. However, the locking member that is engaged by pressing the panel body 5 against the evacuation door body 4 and comes off by being separated is separated from the evacuation door body 4 and the panel body. The panel body 5 may be held by being interposed between the panel members 5. 4 and 5 show a case where the male and female members 6a and 6b of the magic fastener 6 are attached to the evacuation door 4 and the panel body 5 as locking members. When the evacuation door body 4 is opened in the direction of the white arrow, the panel body 5 on the near side in FIG. 4 (left side in FIG. 5) is rotated in the direction in which the evacuation door body 4 is opened by the stopper. 4 is forcibly separated from the evacuation door body 4, and the panel body 5 on the far side of the drawing in FIG. 4 (the right side in FIG. 5) is pushed down by the evacuation door body 4, and each of the panel members 5 is moved by the magic fastener 6. It loses holding power and turns downward.
[0039]
In the present embodiment, the panel body 5 is formed by a hollow structure, but may be formed by a single plate. In addition to being easy to manufacture, the thickness of the panel body 5 is reduced, so that the protrusion from the fire door body 1 can be further reduced, and the depth of the concave portion 2a of the wall surface 2 for storing the fire door body 1 does not need to be large. I'm done. When the magnet is attached to the single-panel panel body 5, it may be attached to either the front or back as long as it can be attached to the door bodies 1 and 4.
[0040]
In the present embodiment, the position of the center of gravity is set so that the panel body 5 naturally rotates downward. However, the panel body 5 may be urged to rotate downward using a spring or the like. However, the urging force needs to be large enough not to hinder the holding of the panel body 5 by a locking member such as a magnet or a magic fastener.
[0041]
In the present embodiment, the panel body 5 is held only by the evacuation door 4, but if the evacuation door 4 can be opened only in one direction from the state where the evacuation opening 1a is closed, the evacuation is performed. The panel body 5 provided on the side where the door 4 can be opened may be held by the fire door 1. This is because when the evacuation door body 4 is opened, the panel body 5 is pushed down by the evacuation door body 4, and the holding force of the fire door body 1 is lost, and the panel body 5 is rotated downward.
[0042]
(Second embodiment of the present invention)
6 to 8 show a second embodiment of the present invention. In FIG. 6, (a) shows a normal state (when the passage is opened), (b) shows a state when a fire occurs (when the passage is closed), and (c) shows a state when the opening knob of the evacuation door is operated. FIG. FIG. 7 is a perspective view for explaining in detail the state when the opening knob of the evacuation door is operated, and FIG. 8 is a view showing a cross section taken along line CC of FIG.
[0043]
Normally, the fire door 11 is stored in a storage frame 12b surrounding a recess 12a formed in the wall surface 12 as shown in FIG. 6A, and an electromagnetic electromagnetic shield (not shown) provided in the recess 12a. It is fixed by a lock, and the electromagnetic lock is released based on a signal transmitted from a fire detection device (not shown) when a fire occurs. Since the fire door 11 is urged in the closing direction, when the electromagnetic lock is released, the fire is opened in the passage 13 and fitted into the fire door receiver 13a to close the passage 13 (FIG. 6 ( b)).
[0044]
The fire door 11 has an evacuation opening 11a through which a person who has escaped after the passage 13 has been closed by the fire door 11 passes therethrough. The evacuation opening 11a is closed by an evacuation door 14. I have. The evacuation door body 14 can be manually opened by operating the opening / closing knob 14a, and after being opened, the evacuation door 11a is automatically closed by being urged by a door closer (not shown). . Since there is the horizontal frame member 11b below the evacuation opening 11a, there is a step between the evacuation opening 11a and the floor 13b of the passage 13.
[0045]
The fire door body 11 includes a panel body 15 supported by a hinge member 15a at the lower end side of the evacuation opening 11a so as to be vertically rotatable. The panel body 15 is rotated upward when the evacuation door body 14 is closed, so that the side end portion 15b is in contact with a stopper (fire door body 11) on the side of the evacuation opening 11a. Is folded along the fire door 11. The center of gravity of the panel body 15 is set such that the panel body 15 naturally pivots (deploys) downward when no holding force is applied from the outside.
[0046]
The evacuation door 14 includes a holding mechanism 16 for holding the panel 15 in a folded state along the fire door 11. The holding mechanism 16 includes a support plate 16a fixed to the evacuation door body 14, a tension spring 16b attached to the support plate 16a, a locking member 16c pulled downward by the tension spring 16b, and a locking member 16c for opening the locking member 16c. It has a wire 16d connected to the knob 14a. The locking member 16c is a rod-shaped member. Both ends of the locking member 16c protrude from slits 14b formed on both side surfaces of the evacuation door 14, and a hook 16e protruding further downward is formed at the protruding portion. ing. The hook portion 16e is locked by a slit 15c as a locked portion formed on the panel body 15, but when the release knob 14a is operated, the hook 16e is lifted up by the wire 16d to release the lock on the slit 15c. Is done.
[0047]
The operation of the fire door according to the second embodiment will be described. The electromagnetic lock of the fire door 11 is released based on the fire detection signal, and the passage 13 is closed. Thereafter, when the person who has been late escapes operates the opening knob of the evacuation door body 14, the locking member 16c connected to the opening knob 14a is pulled up, and the locking of the hook portion 16e with the slit 15c is released, and the panel is released. The body 15 loses holding power and is pivoted downward, ie, deployed. The free end of the panel body 15 is in contact with the floor 13b of the passage and automatically forms a slope connecting the evacuation opening 11a and the floor 13b (two-dot chain line in FIGS. 7 and 8).
[0048]
The automatically formed slope makes it easy for the user of the wheelchair to pass through the evacuation opening 11a, and can escape alone even when a fire occurs. Also, since the panel body 15 forming the slope is held along the fire door body 11, there is no need to provide a special storage space for the slope.
[0049]
In the present embodiment, the hook 16e is used for holding the panel body 15, but a magnet may be attracted to the inner wall surface of the evacuation door body 14 and the panel body 15 may be held by its magnetic force. good. Specifically, as shown in FIG. 9, a support plate 17a fixed to the evacuation door body 14, a diamond-shaped link 17b whose lower end is supported by the support plate 17a, and a magnet supported by an intermediate portion of the diamond-shaped link 17b 17c, a compression spring 17d for expanding the rhombus link 17b in the lateral direction to attract the magnet 17c to the inner wall surface of the evacuation door 14, and a wire 17e for connecting the rhombus link 17b to the opening knob 14a. Can be.
[0050]
When the opening knob 14a is operated, the upper end of the rhombus link 17b is pulled up by the wire 17e, the width in the horizontal direction is reduced against the compression spring 17d, and the magnet 17c is separated from the inner wall surface of the evacuation door body 14. You. As a result, the panel body 15 loses holding power due to the magnetic force of the magnet 17c and can be rotated downward. In this case, it is necessary to form a contact surface 15d (adsorption surface) in contact with a portion of the evacuation door 14 where the magnet is adsorbed on the panel body 15.
[0051]
In the present embodiment, the panel body 15 is formed by a hollow structure, but may be formed by a single plate. This not only facilitates the manufacture, but also allows the panel body 15 to be formed thin, so that the protrusion from the fire door 1 can be further reduced.
[0052]
In the present embodiment, the position of the center of gravity is set so that the panel body 15 naturally rotates downward. However, the panel body 15 may be urged to rotate downward using a spring or the like.
[0053]
(Third embodiment of the present invention)
FIGS. 10 to 13 show a third embodiment of the present invention. In FIG. 10, (a) shows a state at the time of normal operation (at the time of opening the passage), (b) shows a state at the time of the occurrence of a fire (midway of closing the passage), and (c) shows a state at the time of occurrence of a fire (at the time of completion of closing the passage). It is. FIG. 11 is a perspective view for explaining how a panel provided on the evacuation door forms a slope, FIG. 12 is a view showing a cross section taken along line DD of FIG. 11, and FIG. It is a figure which shows the -E cross section.
[0054]
Normally, the fire door 21 is stored in a storage frame 22b surrounding a recess 22a formed in the wall surface 22 as shown in FIG. 10A, and an electromagnetic solenoid (not shown) provided in the recess 22a. It is fixed by a lock, and when a fire occurs, the electromagnetic lock is released based on a signal transmitted from the fire detection device. Since the fire door 21 is urged in the closing direction, when the electromagnetic lock is released, the fire door 21 is deployed in the passage 23 and fitted into the fire door receiver 23a to close the passage 23 (FIG. 10 ( c)). In addition, the holding force of the electromagnetic lock is set to such an extent that it can be released by manually moving the door.
[0055]
The fire door 21 has an evacuation opening 21a through which a person who has escaped after the passage 23 has been closed by the fire door 21 passes therethrough. The evacuation opening 21a is closed by the evacuation door 24. I have. The evacuation door 24 can be manually opened by operating an opening / closing knob 24a, and after opening, is urged by a door closer (not shown) to automatically close the evacuation opening 21a. . Since there is the horizontal frame member 21b below the evacuation opening 21a, there is a step between the evacuation opening 21a and the floor 23b of the passage 23.
[0056]
The fire door body 21 includes a panel body 25 supported by a hinge member 25a at the lower end side of the evacuation opening 21a so as to be rotatable vertically. The panel body 25 is rotated upward when the evacuation door body 24 is closed, so that the side end 25b is in contact with a stopper (the fire door body 21) on the side of the evacuation opening 21a. Cover the lower part of the evacuation door 24. The center of gravity is set such that the panel body 25 naturally pivots (deploys) downward when no holding force is applied from the outside.
[0057]
The evacuation door 24 is recessed inward from the general surface of the fire door 21, but the surface of the panel 25 facing the evacuation door 24 has a convex portion 25 c that contacts the evacuation door 24. Is formed. As shown in FIG. 12, a magnet 24b is attached to an inner wall surface of the evacuation door 24 with a bracket 24c so as to be in close contact therewith. The panel body 25 is held along the fire door 21 by being attracted to the steel evacuation door 24 by the magnetic force of the magnet 24b when rotated upward. When the evacuation door 24 is flush with the fire door 21, the projection 25c does not need to be provided.
[0058]
A movable iron core 26a, which can protrude from a hole 21c formed in a surface with which a side end 25b of the panel body 25 abuts, is provided as an actuator for releasing the holding of the panel body 25 by the magnet 24b inside the fire door 21. Is provided. The electric solenoid 26 is connected to a power supply by a cord 26b, and operates based on a fire detection signal sent from a fire detection device when a fire occurs.
[0059]
The operation of the fire door according to the third embodiment will be described. The electromagnetic lock of the fire door 21 is released based on the fire detection signal, and the passage 23 is closed. At the same time, the electric solenoid 26 is energized based on the fire detection signal, the movable iron core 26a protrudes from the hole 21c, forcibly pulls the panel body 25 away from the evacuation door body 24, and the panel body 25 reduces the holding force by the magnet 24b. It loses and is pivoted downward, ie, deployed. Then, the free end of the panel body 25 contacts the floor surface 23b of the passage and automatically forms a slope connecting the evacuation opening 21a and the floor surface 23b (two-dot chain line in FIGS. 11 to 13).
[0060]
If the panel body 25 is deployed while the fire door body 21 is closing the passage 23, the free end of the panel body 25 may strike the floor surface 23b. Therefore, as a preventive measure, the fire door body 21 is deployed. A wheel 25d is provided at a free end of the panel body 25 disposed in the direction shown in FIG.
[0061]
The automatically formed slope makes it easy for the user of the wheelchair to pass through the evacuation opening 21a, and can escape alone even when a fire occurs. Further, since the panel body 25 forming the slope is held along the fire door body 21, there is no need to provide a special storage space for the slope.
[0062]
In the present embodiment, the magnet 24b is mounted on the inner wall surface of the evacuation door 24 for appearance and prevention of breakage of the magnet. However, the magnet 24b is mounted on the outer wall surface with priority given to inspection and replacement workability of the magnet. May be. The magnet can be attached not only to the evacuation door 24, but also to the fire door 21 and the panel 25, or a combination thereof.
[0063]
In the present embodiment, the convex portion 25c is provided in order to make the panel body 25 and the evacuation door body 24 adhere to each other. However, when attaching the magnet to the panel body 25 or the outer wall surface of the evacuation door body 24, the spacer is used. If the height is adjusted by sandwiching or the like, the convex portion 25c is unnecessary. In order to ensure the attraction by the magnet, it is necessary to make the attraction surfaces adhere to each other, but if the spacer is made of a cushioning material, the magnet will follow and adhere to the mating surface, so the dimensional accuracy of the panel body and mounting variations Management becomes easier.
[0064]
In the present embodiment, the magnet 24b is used to hold the panel body 25. However, the locking member that is engaged by pressing the panel body 25 against the evacuation door body 4 and comes off by being separated is used as the fire door body 21. Alternatively, the panel body 25 may be held between the evacuation door body 24 and the panel body 25.
[0065]
In the present embodiment, the panel body 25 is formed by a hollow structure, but may be formed by a single plate. In addition to being easy to manufacture, the thickness of the panel body 25 is reduced, so that the protrusion from the fire door 21 can be further reduced. When a magnet is attached to the single-panel body 25, it may be attached to either the front or back.
[0066]
In the present embodiment, the position of the center of gravity is set so that the panel body 25 naturally rotates downward. However, the panel body 25 may be urged to rotate downward using a spring or the like. However, the urging force needs to be set to a magnitude that does not hinder the holding of the panel body 25 by a locking member such as a magnet or a magic fastener.
[0067]
In the present embodiment, the panel body 25 is exclusively held by the evacuation door 24, but may be held by the fire door 21.
[0068]
In the present embodiment, the actuator for deploying the panel body 25 is provided on the fire door body 21, but may be provided on the evacuation door body 24 or the panel body 25 itself.
[0069]
(Fourth embodiment of the present invention)
FIG. 14 shows a fourth embodiment of the present invention. In FIG. 4, (a) is a view showing a normal state (when the passage is opened), (b) is a view showing a state when a fire occurs (before closing the passage), and (c) is a view showing a state when a fire occurs (after closing the passage). .
[0070]
The fire door 31 is normally stored in a storage frame 32b surrounding a recess 32a formed in the wall surface 32 as shown in FIG. 14A, and is provided by an electromagnetic lock (not shown) provided in the recess 32a. Fixed. When the electromagnetic lock is released based on a fire detection signal transmitted from a fire detection device (not shown) when a fire occurs, the fire prevention door body 31 is urged in the closing direction. The passage 33 is closed as shown in FIG. 14 (c) by deploying in the inside 33 and fitting it into the fire door body receiver 33a. Note that the holding force of the electromagnetic lock is set to a level that can be released by manually moving the door.
[0071]
The fire door 31 is formed with an evacuation opening 31a through which a person who has escaped after the passage 33 is closed by the fire door 31 passes therethrough. The evacuation opening 31a is closed by an evacuation door 34. I have. The evacuation door 34 can be manually opened by operating an opening / closing knob 34a, and after opening, is urged by a door closer (not shown) to automatically close the evacuation opening 31a. . Since there is the horizontal frame member 31b below the evacuation opening 31a, there is a step between the evacuation opening 31a and the floor surface 33b of the passage 33.
[0072]
The fire door body 31 includes a panel body 35 supported by a hinge member 35a at the lower end of the evacuation opening 31a so as to be rotatable in the vertical direction. The panel body 35 is rotated upward when the evacuation door body 34 is closed, so that the side end 35b is in contact with the stopper (fire door body 31) on the side of the evacuation opening 31a. , So as to be folded along the fire door body 31. The center of gravity is set so that the panel body 35 naturally pivots (deploys) downward when no holding force is applied from the outside.
[0073]
An electromagnet 36 is disposed in a portion of the fire door 31 where the panel 35 contacts. Normally, the power is supplied to the electromagnet 36 from the power supply cord 36a, and the panel body 35 rotated upward is sucked by the magnetic force of the electromagnet 36 to hold the panel body 35 in a folded state along the fire door 31. . When a fire occurs, energization of the electromagnet 36 is interrupted based on a fire detection signal from the fire detection device, and the holding of the panel body 35 is released.
[0074]
The operation of the fire door according to the present embodiment will be described. The electromagnetic lock of the fire door 1 is released based on the fire detection signal and the passage 33 is closed. At the same time, the power supply to the electromagnet 36 is also cut off based on the fire detection signal, and the panel body 35 loses the holding force of the electromagnet 36 and is rotated downward, that is, expanded. The free end of the panel body 35 contacts the floor surface 33b of the passage, and automatically forms a slope connecting the evacuation opening 31a and the floor surface 33b. In addition, since the free end of the panel body 35 may hit the floor surface 33b during the deployment of the fire door body 31, as a preventive measure, the free end of the panel body 35 in the direction in which the fire door body 31 is deployed is provided. Wheels (similar to 25d in FIGS. 11 and 13) are provided.
[0075]
The automatically formed slope makes it easy for the user of the wheelchair to pass through the evacuation opening 31a, and can escape alone when a fire occurs. In addition, since the panel body 35 forming the slope is held along the fire door body 31, there is no need to provide a special storage space for the slope.
[0076]
In the present embodiment, the energization of the electromagnet is directly cut off based on the fire detection signal transmitted from the fire detection device when a fire occurs. However, as shown in FIG. The power supply connector 36b and the power supply connector 36c connected to each other may be provided, and the power supply connector 36b may be fixed to the fire door 31 while the power supply connector 36c may be fixed to the wall surface 32 (fixed side). When the fire door 31 is in the open position, both connectors 36b and 36c are connected, and when the fire door 31 moves toward the closed position, both connectors 36b and 36c are pulled apart to release the connection. It is something to be done. Thus, when a fire occurs, the electromagnetic lock is released, the fire prevention door body 31 expands from the wall surface 32 and moves from the open position to the closed position, whereby the power supply connector 36b is disengaged from the power supply connector 36c, and power is supplied to the electromagnet 36. Will be cut off.
[0077]
In the present embodiment, the electromagnet 36 is disposed on the fire door 31, but may be disposed on the evacuation door 34 or the panel 35. The current-carrying connector 36b is not limited to the fire door 31 and can be disposed on the evacuation door 34 or the panel 35. The power connector 36c is not limited to the wall surface 32c, and may be provided on the floor surface 33b.
[0078]
(Other embodiments)
In the first to fourth embodiments, each of the panel bodies 5, 15, 25, and 35 forming the slope is grounded by rotating downward, but is not necessarily grounded. For example, as shown in FIG. 16, the panel body P turned downward is stopped by the spring end or the like so that the free end P1 floats from the floor F, and the wheel W of the wheelchair passes. In doing so, the vehicle may be further rotated by the weight to ground.
[0079]
Alternatively, as shown in FIG. 17, a gap G that does not hinder the passage of the wheel W of the wheelchair may be open. If the panel body is configured as shown in FIG. 16 or FIG. 17, wheels provided as measures for preventing the panel body from sticking in the third and fourth embodiments can be eliminated. In addition, in this specification, the "slope connecting the evacuation exit and the floor" has a meaning of a slope provided between the evacuation exit and the floor, and refers to a slope that physically connects the evacuation exit and the floor. There is no limitation.
[0080]
In the second to fourth embodiments, one end of each of the panel bodies 15, 25, 35 is rotatably supported by hinge members 15a, 25a, 35a at the lower end side of the evacuation opening. A slope is formed by rotating downward about the center 35a. Instead of the panel bodies 15, 25, and 35, a panel body 45 developed as shown in FIG. 18 is used. You can also.
[0081]
The panel body 45 is composed of an upper panel body 45a and a lower panel body 45b which are connected to bend up and down freely. The engagement portions projecting laterally from the upper and lower ends of the panel body 45 are rotatably and slidably engaged with guide rails 46 provided on both sides of the evacuation opening 41a. Therefore, in the state where panel body 45 is folded along fire door 41 (FIG. 18A), the connecting portion between upper panel body 45a and lower panel body 45b is bent (FIG. 18B). )), It can be deployed in a state (FIGS. 18C and 18D) in which a slope connecting the evacuation opening 11a and the floor of the passage is formed.
[0082]
As shown in FIG. 19, a locked portion 45c is provided on the panel body 45, and the locking portion 46c urged downward by the tension spring 46b is locked to the locked portion 45c. By doing so, the panel body 45 can be held in a folded state along the fire door body 41. Further, the locking portion 46c is connected to the opening knob 44a (not shown) by a wire 46d, and the locking portion 46c is pulled up by the operation of the opening knob 44a to release the locking. As in the second embodiment, it is possible to realize a fire door in which a slope is formed in conjunction with the operation of the opening knob.
[0083]
Also, as shown in FIG. 20, a magnet 45e is attached to the back surface of the panel body 45 so that the panel body 45 can be attracted to the evacuation door body 44 by the magnetic force of the magnet 45. Can be held in a folded state along the fire door 41. Further, as shown in FIG. 21, an electric solenoid 47 is disposed on the fire door 41, and when a fire occurs, the movable iron core 47a is protruded by a fire detection signal from a fire detection device to evacuate the panel body 45. If it is forcibly separated from the door body 44, it is possible to realize a fire door in which a slope is formed by actuating an actuator based on a fire detection signal at the time of a fire as in the third embodiment. it can.
[0084]
If the panel body 45 can be attracted by the magnetic force of the electromagnet disposed on the evacuation door body 44 and the energization to the electromagnet is cut off based on a fire detection signal at the time of a fire, As in the fourth embodiment, it is possible to realize a fire door in which a slope is formed by cutting off the power supply to the electromagnet when a fire occurs.
[0085]
In addition, the fire door of the present invention is not limited to the above-described embodiment, and it goes without saying that various changes can be made without departing from the spirit of the present invention.
[0086]
【The invention's effect】
As described above, according to the fire door according to the first to fifth aspects of the present invention, the slope is formed in conjunction with the opening of the evacuation door, so that the wheelchair user or the like can escape alone. It will be easier. Further, since the panel body forming the slope is held along the fire door body, there is no need to provide a special storage space for the slope.
[0087]
According to the fire door according to the invention of claims 6 to 8, since the slope is formed in conjunction with the operation of the opening knob of the evacuation door body, it is easy for a wheelchair user or the like to escape alone. . Further, since the panel body forming the slope is held along the fire door, there is no need to provide a special storage space for the slope.
[0088]
According to the fire door according to the ninth or tenth aspect of the present invention, the slope is formed by the operation of the actuator when a fire occurs, so that the wheelchair user or the like can easily escape alone. Further, since the panel body forming the slope is held along the fire door body, there is no need to provide a special storage space for the slope.
[0089]
According to the fire door according to the invention of claims 11 to 13, energization of the electromagnet holding the panel body is cut off when a fire occurs and a slope is formed, so that a wheelchair user or the like can escape alone. It will be easier. Further, since the panel body forming the slope is held along the fire door body, there is no need to provide a special storage space for the slope.
[0090]
According to the fire door according to the fourteenth or fifteenth aspect of the present invention, the slope can be easily formed only by releasing the holding, so that the user of the wheelchair or the like can easily escape alone. . Further, since the panel body forming the slope is held along the fire door body, there is no need to provide a special storage space for the slope.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating an overall configuration of a fire door according to a first embodiment.
FIG. 2 is a perspective view for explaining the operation of the fire door according to the first embodiment.
FIG. 3 is a diagram showing a cross section taken along line AA of FIG. 2;
FIG. 4 is a perspective view for explaining an operation of a fire door according to a modification of the first embodiment.
FIG. 5 is a view showing a BB cross section of FIG. 4;
FIG. 6 is a diagram illustrating an entire configuration of a fire door according to a second embodiment.
FIG. 7 is a perspective view for explaining the operation of a fire door according to a second embodiment.
FIG. 8 is a view showing a cross section taken along the line CC of FIG. 7;
FIG. 9 is a diagram for explaining an operation of a fire door according to a modification of the second embodiment.
FIG. 10 is a diagram illustrating an overall configuration of a fire door according to a third embodiment.
FIG. 11 is a perspective view for explaining the operation of a fire door according to a third embodiment.
FIG. 12 is a diagram showing a DD section of FIG. 11;
FIG. 13 is a diagram showing a cross section taken along line EE of FIG. 11;
FIG. 14 is a diagram illustrating an overall configuration of a fire door according to a fourth embodiment.
FIG. 15 is a diagram illustrating an overall configuration of a fire door according to a modification of the fourth embodiment.
FIG. 16 is a view showing a modified example of a panel body forming a slope.
FIG. 17 is a view showing another modification of the panel body forming the slope.
FIG. 18 is a view showing still another modified example of the panel body forming the slope.
FIG. 19 is a view for explaining the operation of a fire door according to a modification of the second embodiment to which the panel body shown in FIG. 18 is applied.
FIG. 20 is a view for explaining the operation of a fire door according to a modification of the third embodiment to which the panel body shown in FIG. 18 is applied.
21 is a view for explaining the operation of a fire door according to a modification of the third embodiment to which the panel body shown in FIG. 18 is applied, and is a view showing a cross section different from FIG. 20; is there.
[Explanation of symbols]
1 Fire door body
1a Evacuation exit
3b floor
4 Evacuation door
5 Panel body
5d magnet
6 magic fasteners (locking members)
11 Fire door
11a Evacuation exit
13b floor
14 Evacuation door
14a Opening knob
15 Panel body
16 Holding mechanism
21 Fire door
21a Evacuation exit
21c hole
23b floor
24 Evacuation door
24b magnet
25 Panel body
26 Electric Solenoid (Actuator)
31 Fire door
31a Evacuation Exit
33b floor
34 Evacuation door
35 Panel body
36 Electromagnet
36b current-carrying connector
36c power connector

Claims (15)

An evacuation door closed by an evacuation door body is formed through the fire door body, and a fire door having a step between the evacuation port and a floor of a passage in which the fire door body is installed,
The fire door body includes a panel body rotatably supported at a lower end side of the evacuation opening,
The panel body is held so as to cover a lower part of the evacuation door body by being rotated upward when the evacuation door body is closed, and is turned downward by opening the evacuation door body. A fire door which is moved to form a slope connecting the evacuation opening and the floor surface. The panel body is held so as to cover a lower portion of the evacuation door body by being attracted to the evacuation door body by magnetic force of a magnet attached to the panel body and / or the evacuation door body. The fire door according to claim 1, characterized in that: The panel body is held so as to cover a lower portion of the evacuation door body by being locked to the evacuation door body by a locking member interposed between the panel body and the evacuation door body. The fire door according to claim 1, characterized in that: The fire door is a fire door that can be opened only in one direction,
The panel body provided on the openable side of the evacuation door is attracted to the fire door by the magnetic force of a magnet attached to the panel and / or the fire door. The fire door according to claim 1, wherein the fire door is held so as to cover a lower part of the door body. The fire door is a fire door that can be opened only in one direction,
The evacuation is performed by locking the panel body provided on the openable side of the evacuation door body to the fire door body with a locking member interposed between the panel body and the fire door body. The fire door according to claim 1, wherein the fire door is held so as to cover a lower part of the door body. An evacuation door closed by an evacuation door body is formed through the fire door body, and a fire door having a step between the evacuation port and a floor of a passage in which the fire door body is installed,
The fire door body includes a panel body that can be held in a folded state along the fire door body,
The fire door, wherein the panel body is expanded from the folded state by operating an opening knob of the evacuation door body to form a slope connecting the evacuation opening and the floor surface. The panel body is held in a folded state along the fire door body by the locking portion provided on the evacuation door body being locked by the locked portion provided on the panel body. And
The fire prevention device according to claim 6, wherein the locking portion is connected to the opening knob, and the locking to the locked portion is released by operating the opening knob. door. The panel body is held in a folded state along the fire door by being attracted to the evacuation door by magnetic force of a magnet adsorbing on an inner wall surface of the evacuation door,
The fire door according to claim 6, wherein the magnet is connected to the opening knob, and is separated from an inner wall surface of the evacuation door by operating the opening knob. An evacuation door closed by an evacuation door body is formed through the fire door body, and a fire door having a step between the evacuation port and a floor of a passage in which the fire door body is installed,
The fire door body includes a panel body that can be held in a folded state along the fire door body,
The panel body is deployed from the folded state by the operation of an actuator disposed on the panel body, the fire door, and / or the evacuation door, and connects the evacuation opening to the floor. A fire door characterized by forming a slope. The fire panel is attached to the panel body, the fire door and / or the evacuation door by a magnetic force of a magnet attached to the fire door and / or the evacuation door. It is held in a folded state along the body,
The actuator is an electric solenoid that operates based on a detection signal when a fire occurs, and the panel body is separated from the fire door or the evacuation door by the movement of the movable iron core of the electric solenoid. The fire door according to claim 9. An evacuation door closed by an evacuation door body is formed through the fire door body, and a fire door having a step between the evacuation port and a floor of a passage in which the fire door body is installed,
The fire door is attracted to the fire door and / or the evacuation door by a magnetic force of an electromagnet attached to the panel, the fire door and / or the evacuation door, and the fire protection is performed. It has a panel body that can be held in a folded state along the door body,
The fire door, wherein the panel body is developed from the folded state when the power to the electromagnet is cut off to form a slope connecting the evacuation opening and the floor surface. The fire door according to claim 11, wherein the energization of the electromagnet is interrupted based on a fire detection signal when a fire occurs. The energization of the electromagnet is performed by moving the fire door from the open position to the closed position when a fire occurs, thereby closing the energizing connector provided on the panel body, the fire door body and / or the evacuation door body. The fire door according to claim 11, wherein the fire door is shut off by disconnecting from a power connector provided on a fixed side of the position. An evacuation door closed by an evacuation door body is formed through the fire door body, and a fire door having a step between the evacuation port and a floor of a passage in which the fire door body is installed,
The fire door body includes a panel body that can be held in a folded state along the fire door body,
The fire door, wherein the panel body is released from the folded state by releasing the holding to form a slope connecting the evacuation opening and the floor surface. An evacuation door closed by an evacuation door body is formed through the fire door body, and a fire door having a step between the evacuation port and a floor of a passage in which the fire door body is installed,
The fire door body includes a panel body that can be held along the fire door body by being rotatably supported at the lower end side of the evacuation opening and turned upward,
The fire door, wherein the panel body is rotated downward by releasing the holding to form a slope connecting the evacuation opening and the floor surface.

Images