JP3711826B2 - Basement fire door - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fire door for a basement, which is formed by housing a heat insulating material in an outer shell made of a heat-resistant metal plate and is provided at a substantially horizontal entrance / exit opening of the basement.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, fire doors are known in which a heat insulating material is accommodated in an outer shell made of a heat resistant metal plate. In the conventional fire door, a heat insulating material filled with cellular concrete is generally used, thereby preventing intrusion of flame and maintaining heat insulation.
[0003]
[Problems to be solved by the invention]
By the way, when the basement is installed under the floor, the entrance / exit opening is often made horizontal due to space, and in this case, the basement fire door provided in the substantially horizontal entrance / exit is in the vertical direction. It is rotated and opened and closed. When the above conventional fire door is employed as such a basement fire door, the following problems occur.
[0004]
That is, the above conventional fire door is filled with cellular concrete and becomes heavy, so a considerable amount of force is required to open and close the fire door by turning it up and down. It will be heavy and difficult. Moreover, in order to maintain a certain degree of heat insulation, a large amount of cellular concrete is required, which not only increases the weight as described above, but also increases the cost.
[0005]
The present invention was invented in order to solve the above-mentioned problems in the prior art, and its problems are rich in fire resistance and heat insulation, easy to open and close, and can reduce the manufacturing cost. It is possible to provide fire doors for basements.
[0006]
[Means for Solving the Problems]
The fire door for a basement according to claim 1 of the present invention is a fire door for a basement that is provided with a heat insulating material in an outer shell made of a heat-resistant metal plate and is provided at a substantially horizontal access opening of the basement. As the heat insulating material in the outer shell, a cellular concrete material is disposed outside the basement and an inorganic fiber material is accommodated inside the basement.
[0007]
Therefore, in this case, since the outside of the basement is formed by the heat-resistant metal plate of the outer shell and the foamed concrete having high fire resistance on the back side, the flame is cut off at this portion and the flame is kept in the basement. Intrusion into the water is surely prevented and sufficient fire resistance is ensured. In addition, since the inorganic fiber material having high heat resistance and high heat insulation is arranged in the basement, and the inorganic fiber material and the cellular concrete are disposed and accommodated in the outer shell body, sufficient heat insulation is ensured as a whole. Is done.
[0008]
Furthermore, as described above, rather than being made entirely of cellular concrete which is a heavy object, a light and relatively inexpensive inorganic fiber material is accommodated as a heat insulating material on the basement side, so that a substantially horizontal entrance / exit opening of the basement Even if it is opened and closed by being pivoted up and down, the opening and closing operation is light and easy, and the manufacturing cost can be reduced.
[0013]
Moreover, the basement for fire doors according to claim 1 of the present invention is characterized in that the handle member has been mounted fixed via a heat insulating sealant underground outdoor side of the outer shell.
[0014]
Therefore, in this case, in particular, since the handle can be opened and closed with the handle, the handle is attached and fixed to the outer surface of the basement of the outer shell through a heat insulating sealing material. Heat transfer to the inside of the outer shell is reliably prevented, improving the fire resistance and heat insulation, and the sealing performance at the attachment and fixing part is maintained even after the fire. The sealing property is also exhibited, and the sealing property is ensured even when submerged in the event of a flood.
[0015]
A fire door for a basement according to claim 2 of the present invention is the fire door for basement according to claim 1, wherein a pivot support hole that opens to the outside of the basement is formed through the outer shell, the cellular concrete material, and the inorganic fiber material. The lock shaft body is rotatably inserted into the pivot hole, and the rotation operation handle of the handle is coupled and fixed to one end of the lock shaft body outside the basement, and the other end of the lock shaft body is rotated. Thus, a lock piece for detachably locking the lock receiver is provided.
[0016]
Therefore, in this case, in particular, by turning the handle for turning the handle, the lock piece at the end of the lock shaft in the basement is detachably locked to the lock holder, and locked / unlocked. As a work that is continuous with the locking / unlocking operation, the handle can be held and opened.
[0017]
The basement fire door according to claim 3 of the present invention is the basement fire door according to claim 2, wherein the heat-resistant O-ring seals the gap between the outer peripheral surface of the lock shaft and the inner peripheral surface of the pivot hole. Is mounted on the outer periphery of the lock shaft body.
[0018]
Therefore, in this case, in particular, the gap between the inner peripheral surface of the pivot hole penetrating the outside of the basement and the outer peripheral surface of the lock shaft body rotatably inserted into the pivot hole is the lock shaft. Since it is sealed by a heat-resistant O-ring attached to the outer periphery of the body, the heat-resistant O-ring is not burned down by a fire, and the waterproofness in the pivot hole is maintained even after the fire. The waterproofness is exhibited even when the water is discharged, and the waterproofness is ensured even when submerged in the event of a flood.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show an embodiment corresponding to all of claims 1 to 3 of the present invention, and a fire door for a basement in the embodiment has a heat insulating material 2 in an outer shell 1 made of a heat-resistant metal plate. It is a fire door for a basement provided in a substantially horizontal entrance / exit opening 3 of the basement, comprising a heat insulating material 2 in the outer shell 1, a cellular concrete material 4 on the outside of the basement, and an inorganic fiber material on the basement side 5 is disposed and accommodated.
[0020]
In this case, the outer shell 1 is formed of a box-shaped upper member 1a opened downward and a flat plate-like lower member 1b, and the cellular concrete material 4 and the inorganic fiber material 5 are disposed and accommodated in the upper member 1a. The lower opening of the upper member 1a is closed by the lower member 1b. Here, the upper member 1a and the lower member 1b are both formed of a steel plate having a thickness of 1.2 mm, and the thickness of the entire outer shell 1 is about 70 mm. The cellular concrete material 4 is an autoclave-cured lightweight cellular concrete plate (ALC plate) having a thickness of 36 mm, and the inorganic fiber material 5 is a rock wool plate having a thickness of 25 mm.
[0021]
And in the fire door for basements of this embodiment, the cellular concrete material 4 and the inorganic fiber material 5 are laminated | stacked and arrange | positioned in the frame 7 in which the metal mold material 6 is framed, The metal mold material 6 and outer shell The body 1 is bonded and fixed to the body 1 through a heat insulating sealing material 8. In this case, the metal mold 6 is a steel mold having a rectangular cross section, and the heat insulating sealing material 8 is a ceramic seal.
[0022]
Further, a reinforcing bar 9 in a direction substantially orthogonal to the pivot axis direction for pivotally supporting the outer shell 1 in the opening / closing opening 3 so as to be freely opened and closed is opposed to the frame body 7 in the layer made of the inorganic fiber material 5. Further, the foamed concrete material 4 is supported by the reinforcing bar material 9 while being fixed between the metal mold materials 6 to be constructed. In this case, as shown in FIG. 3, the reinforcing bars 9 are steel molds having a rectangular cross section and are arranged in a layer made of the inorganic fiber material 5 at equal intervals. In this case, the inorganic fiber material 5 The reinforcing bar material 9 is thicker than the layer thickness, and an air layer is formed between the layer made of the inorganic fiber material 5 and the layer made of the cellular concrete material 4, so that the heat insulation is improved. ing.
[0023]
Further, in the basement fire door of the embodiment, the handle 10 is attached and fixed to the outer surface of the basement 1 of the outer shell 1 via a heat insulating sealing material 8 (ceramic seal). In this case, pivot holes 11 that open to the outside of the basement are formed so as to penetrate both the front and back sides of the outer shell 1 and the cellular concrete material 4 and the inorganic fiber material 5, and the lock shaft body 12 can be freely rotated in the pivot holes 11. Inserting and fixing the lock operation handle 13 of the handle 10 to one end outside the basement of the lock shaft 12 is coupled and fixed, and the other end of the lock shaft 12 is rotated to be detachable from the lock receiver 14 There is also provided a lock piece 15 for locking. In addition, a heat-resistant O-ring 16 that seals the gap between the outer peripheral surface of the lock shaft body 12 and the inner peripheral surface of the pivot support hole 11 is mounted on the outer periphery of the lock shaft body 12.
[0024]
As shown in FIG. 2, the basement in this embodiment has a box-shaped basement housing 18 opened upward below the ground 17. At this time, an ALC material is placed on the ground 17 around the basement housing 18. 19 is applied and fixed. A peripheral wall portion of the basement housing 18 is formed of FRP (fiber reinforced plastic), and an opening frame body 20 is fixed to an upper opening portion thereof, and the opening frame body 20 is formed by a steel mold having a rectangular cross section. . An outer shell body 1 serving as a basement fire door is pivotally attached to one side of the opening frame body 20 via a hinge 21, and an entrance / exit opening made of the opening frame body 20 is supported by the base fire door. 3 is opened and closed. In this case, as described above, the outer shell body 1 is pivotally supported by the hinge 21 so as to be openable and closable by the hinge 21, and the reinforcing bars 9 are juxtaposed in a direction substantially perpendicular to the pivot axis direction of the hinge 21. The A stairway 22 for entering and exiting the basement is provided inside the basement housing 18.
[0025]
In addition, the basement in the embodiment is installed under the floor, and a floor finishing material 23 is installed above the basement, and the entrance and exit of the basement is related to the space between the floor finishing material 23 and the basement. The opening 3 is substantially horizontal. A floor opening is formed in the floor finishing material 23 at a position corresponding to the entrance / exit opening 3 of the basement, and a floor door 24 that can be opened and closed is provided in the floor opening. Therefore, with the floor door 24 opened, the basement fire door can be pivoted up and down to open and close. The floor door 24 is made of asbestos board 26 having a thickness of 3 mm on the back surface of a wood plywood 25 having a thickness of 24 mm, and the same board material as the floor finish 23 on the surface of the wood plywood 25, On the back side of the floor door 24, there is formed a recess 27 in which the handle 10 of the fire door for the basement is received.
[0026]
In the basement fire door of the embodiment, as shown in FIG. 1, when the frame body 7 is accommodated and fixed in the box-shaped upper member 1a of the outer shell 1, the inner bottom surface of the upper member 1a The heat insulating sealing material 8 is interposed between the metal mold 6 and the nonflammable heat insulating material 28 (a flexible board having a thickness of 6 mm) between the metal mold 6 and the inner surface of the peripheral wall of the member 1a. The metallic mold member 6 and the upper member 1a are coupled and fixed by a fixing tool 29 such as a rivet or a screw. A plate-shaped cellular concrete material 4 and an inorganic fiber material 5 are laminated in the frame body 7, and the lower opening of the upper member 1a is closed by the lower member 1b. At that time, a non-combustible heat insulating material 28 is also interposed between the metal mold 6 and the lower member 1b, and the lower member 1b is fixedly coupled to the metal mold 6 with a fixing tool 29.
[0027]
Further, the handle 10 as a whole including the rotation operation handle 13 is made of zinc alloy, and the pedestal portion 30 of the handle 10 is attached to the outer surface of the basement 1 of the outer shell 1 with screws 31 through the heat insulating sealing material 8. Attached and fixed. In this case, a reinforcing back plate 32 made of a steel plate is disposed on the back side of the upper member 1 a of the outer shell 1, and between the reinforcing back plate 32 and the same member 1 a and between the upper member 1 a and the pedestal 30. Thermally insulating sealing materials 8 are interposed, and screws 31 are screwed onto the reinforcing back plate 32 and fixed thereto. The reinforcing back plate 32 is separately coupled and fixed to the upper member 1a by a fixing tool 29, and the rotation operation handle 13 of the handle 10 is rotatable with respect to the base portion 30.
[0028]
The handle 10 is similarly arranged and fixed on the front and back of the outer shell body 1, and both turning operation handles 13 are coupled to each other by a lock shaft body 12. The lock shaft 12 is inserted into the pivot hole 11, and the inner periphery of the pivot hole 11 is internally provided with a cylindrical body 33 made of a steel pipe integrated with the reinforcing back plate 32. The lock shaft body 12 is rotatably fitted in the cylindrical body 33. Further, the lock shaft body 12 is formed by connecting a shaft body 12a on the front side and a shaft body 12b on the back side by a shaft joint 34, and a heat-resistant O-ring 16 is mounted on the outer periphery of the shaft joint 34. In this case, both shaft bodies 12a and 12b are made of a steel square shaft material, the shaft joint 34 is made of polyacetal rich in heat insulation and heat resistance, and the heat resistant O-ring 16 is made of silicon rubber.
[0029]
The handle 10 on the back side is provided with a locking piece 15 that rotates integrally with the turning operation handle 13 on the opposite side of the turning operation handle 13, and the locking piece 15 is detachable. A lock receiver 14 is attached to the inside of the opening frame body 20 serving as the entrance / exit opening 3 of the basement. Further, a non-combustible heat insulating material 28 is layered on the outer surface of the opening frame 20, and a door contact receiving member 35 is fixedly attached to the upper surface of the opening frame 20. At that time, a structure in which the incombustible heat insulating material 28 is sandwiched between the upper and lower heat insulating sealing materials 8 is interposed between the opening frame body 20 and the door contact receiving member 35, and is formed on the upper surface of the opening frame body 20. The door contact receiving member 35 is screw-fixed. On the upper side of the door contact receiving member 35, a gasket 36 made of silicon rubber-shaped sealing material is arranged on the inner peripheral side, and a fireproof foam joint material 37 made of graphite is arranged on the outer peripheral side thereof.
[0030]
In this case, the entrance / exit opening 3 is reliably sealed by the fireproof door for the basement, and heat transfer between them is also prevented. Further, between the outer periphery of the fixed coupling portion between the opening frame body 20 and the door stopper receiving member 35 and between the opening inner periphery of the upper member 1a of the outer shell 1 and the outer periphery of the lower member 1b, respectively. A sealing material 38 made of silicon is filled, and the sealing performance is ensured by the sealing material 38. Further, a draining piece 39 is extended from the lower opening edge of the upper member 1a of the outer shell 1 so that even if the packing member such as the gasket 36 is burned out, the waterproof property is secured. Will be.
[0031]
Therefore, in the fire door for the basement of the embodiment, the outer side of the basement is formed by the upper member 1a made of the heat-resistant metal plate of the outer shell body 1 and the cellular concrete 4 rich in fire resistance on the back side. Therefore, the flame is blocked at this portion, and the flame is surely prevented from entering the basement, and sufficient fire resistance is ensured. In addition, the inorganic fiber material 5 having high heat resistance and high heat insulation properties is disposed on the basement side, and the inorganic fiber material 5 and the cellular concrete 4 are disposed and accommodated in the outer shell body 1, so that it is sufficient as a whole. Heat insulation is ensured.
[0032]
Furthermore, as described above, the whole is not formed of the cellular concrete 4 which is a heavy object, but the inorganic fiber material 5 which is light and relatively inexpensive is accommodated as the heat insulating material 2 on the basement side, so that the basement is substantially horizontal. Even if the opening / closing opening 3 is pivoted in the vertical direction to be opened and closed, the driving force for the opening / closing operation is light and easy, and the manufacturing cost can be reduced.
[0033]
In the fire door for the basement of this embodiment, the heat insulating material 2 such as the cellular concrete material 4 and the inorganic fiber material 5 is surrounded by a frame body 7 made of a metal mold material 6 and laminated in the outer shell body 1. Therefore, these heat insulating materials 2 are prevented from being damaged and the strength as a whole is ensured. In addition, since the metallic mold member 6 and the outer shell body 1 are bonded and fixed via a heat insulating sealing material 8, heat transfer into the outer shell body 1 is reliably prevented, and fire resistance and heat insulation are As shown in FIG. 4, the sealing performance at the joint fixing site is maintained even after the fire, and the sealing performance is exhibited even by water discharge at the time of fire digestion. Sealability is ensured.
[0034]
Further, in the fire door for basement of the embodiment, even if the relatively fragile inorganic fiber material 5 is accommodated, the fire door for the basement is opened and closed by pivoting up and down around the pivot shaft of the hinge 21. Since the reinforcing bar material 9 in the same direction, which is easy to bend when being placed, is erected and fixed between the metal mold members 6 facing each other in the frame body 7 in the layer made of the same inorganic fiber material 5, The bending deformation is prevented and the overall strength is improved. In addition, since the cellular concrete material 4 which is a heavy object is supported on the reinforcing bar material 9, the cellular concrete material 4 is firmly supported and fixed, and the breakage thereof is surely prevented.
[0035]
In addition, in the fire door for the basement of the embodiment, the handle 10 can be opened and closed by holding the handle 10, and the handle 10 has a heat insulating sealing material 8 provided on the outer surface of the basement 1 of the outer shell 1. Therefore, heat transfer to the inside of the outer shell 1 is reliably prevented, and fire resistance and heat insulation are improved. In addition, as shown in FIG. 4, even when the handle 10 on the front side is melted and burnt down due to a fire, the sealing performance at the outer shell 1 at the attachment and fixing portion of the handle 10 is maintained, The sealing performance is also exhibited by water discharge, and the sealing performance is ensured even when submerged in the event of a flood.
[0036]
Further, in the basement fire door of the embodiment, the lock piece 15 at the end of the lock shaft 12 on the side of the basement is detachably attached to the lock receiver 14 by rotating the handle 13 of the handle 10. The lock 10 is locked and unlocked to perform locking and unlocking. At this time, the operation handle 13 of the handle 10 can be held and opened as an operation continuous with the locking and unlocking operation. Moreover, in this case, the gap between the inner peripheral surface of the cylindrical body 33 of the pivotal support hole 11 penetrating outside the basement and the outer peripheral surface of the lock shaft body 12 rotatably inserted into the cylindrical body 33 is, Since the heat-resistant O-ring 16 attached to the outer periphery of the shaft joint 34 of the lock shaft body 12 is sealed, the heat-resistant O-ring 16 is not burned out by a fire, and is waterproof in the pivot hole 11. The waterproofness is maintained even after the fire, and the waterproofness is exhibited even when the water is discharged at the time of fire digestion, and the waterproofness is ensured even when submerged in the event of a flood. That is, as shown in FIG. 4, even if the handle 10 on the front side is melted and burnt out, the lock shaft body 12 and the heat-resistant O-ring 16 remain without damage, and waterproofness is ensured.
[0037]
【The invention's effect】
As described above, in the basement fire door according to claim 1 of the present invention, the flame is shut off outside the basement, so that sufficient fire resistance can be secured, and sufficient heat insulation can be secured as a whole. Furthermore, even if it is provided in a substantially horizontal entrance / exit opening of the basement, the opening / closing operation is light and easy, and the manufacturing cost can be reduced.
[0040]
Furthermore, in the fire door for the basement according to claim 1 , in particular, it can be opened and closed with a handle, and at the attachment and fixing portion of the handle, The heat insulation can be improved and the sealing performance can be secured.
[0041]
In the fire door for basement according to claim 2 of the present invention, in particular, locking / unlocking is performed by rotating the rotation operation handle of the handle, which is continuous with the locking / unlocking operation. You can open and close the handle as a work.
[0042]
Further, in the fire door for basement according to claim 3 of the present invention, the waterproof property in the pivot hole can be maintained and ensured even after the fire by the heat-resistant O-ring which is not easily burned down.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a main part of a fire door for a basement that is one embodiment of the present invention.
FIG. 2 is a sectional view showing the entire construction state of the fire door for the basement.
FIG. 3 is a cross-sectional view in a different direction showing the entire construction state.
FIG. 4 is a cross-sectional view showing the main part of the fire door for the basement after a fire.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer shell 2 Heat insulating material 3 Entrance / exit opening part 4 Foam concrete material 5 Inorganic fiber material 6 Metal mold material 7 Frame body 8 Thermal insulation sealing material 9 Reinforcement crosspiece
10 Handle
11 pivot hole
12 Lock shaft
13 Rotating operation handle
14 Locking bracket
15 Lock piece

Claims (3)

It is a basement fire door that contains heat insulation material in the outer shell made of heat-resistant metal plate, and is provided in the basement door's approximately horizontal entrance / exit opening. wood, Ri Na and disposed accommodate inorganic fiber material underground chamber side, basement for fire door, characterized in that the handle member is mounted fixed via a heat insulating sealant underground outdoor side of the outer shell. A pivot hole that opens to the outside of the basement is formed through the outer shell body, the cellular concrete material, and the inorganic fiber material, and the lock shaft is rotatably inserted into the pivot hole. the combined fixing the rotation operating handle of the handle member, characterized in that a lock piece that freely locks the locking detachable been turning operation to the other end of the lock shaft body to the lock receptacle claim 1 Fire door for basement as described. The fire door for a basement according to claim 2, wherein a heat-resistant O-ring that seals a gap between the outer peripheral surface of the lock shaft body and the inner peripheral surface of the pivot hole is mounted on the outer periphery of the lock shaft body.

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