JP2009136629A - Device for opening/closing fire hose passage aperture on fire door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light-weight and low-cost device for opening/closing a fire hose passage aperture comprised of a small number of components. <P>SOLUTION: A small door 1 is openably/closably attached to a fire hose passage aperture provided on the lower edge part of a fire door through a hinge 2. The small door 1 includes a main body plate part 5 made of a sheet metal and folded to be horizontal rectangle, which upwardly/downwardly moves, a flat bottom plate part 6 connected perpendicular to the lower edge that is one longer edge of the main body plate part 5, the upper plate part 7 narrower than the bottom plate part 6 and connected perpendicular to the upper edge that is the other longer edge of the main body plate part 5, a magnet attaching plate part 8 upwardly connected perpendicular to the tip of the upper plate part 7, side plate parts 9, 10 connected to both sides that are two shorter edges of the main body plate part 5, respectively, and an attachment plate part 11 of the hinge 2 provided so as to outwardly thrust perpendicular from the end of the side plate part 9 out of these side plate parts 9, 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fire hose passage opening / closing device in a fire door provided in a building.

  Conventionally, fire doors are provided in buildings to prevent the spread of smoke during a fire. In the event of a fire, a fire hose is routed in the building, and in order to route the fire hose with the fire door closed, a small door that can be opened and closed as a fire hose passage hole is provided in a part of the fire door. ing.

Patent Document 1 discloses a fire hose passage hole opening / closing device in a fire door provided with a small door. The fire hose passage opening and closing device disclosed in Patent Document 1 is a vertical axis between a state in which a passage is opened along a wall surface of a passage and a state in which the passage is closed in order to block the passage of a building. Forming a notch portion serving as a fire hose passage hole at the lower end portion of the fire door that is rotatably attached to the wall surface around the frame, and a frame that is fixed to the fire door with a screw in the notch portion; A small door unit including a small door rotatably supported on the frame is provided. Specifically, as shown in the drawing of Patent Document 1, the small door has a box shape, and the frame attached to the fire door has a bowl shape and covers the upper side of the small door and the hinge portion.
Japanese Patent Laid-Open No. 6-319823

  In the configuration of the fire hose passage opening and closing device in the fire door described in Patent Document 1, the small door is box-shaped, and the frame attached to the fire door is bowl-shaped, and the upper side of the small door and It is a structure that covers the hinge part, and it becomes large as a whole, and since the material used is iron or stainless steel because it requires fire resistance, the overall weight is heavy and handling (when carrying or mounting) There was a problem that it took time and labor. In addition, the small door has a box shape, and a frame that covers the upper side of the small door and the hinge portion is required, and the number of parts increases, and thus there is a problem that the cost increases.

  An object of the present invention is to solve such a problem, and to provide an inexpensive fire hose passage opening / closing device with a small number of parts and a light weight.

  The fire hose passage hole opening and closing device in the fire door according to claim 1 of the present invention is between a state where the passage is opened along the wall surface of the passage and a state where the passage is closed so as to block the passage of the building. A fire hose passage hole is formed at the lower end of the fire door that is attached to the wall so as to be rotatable around a vertical axis, and a fire hose passage hole is opened and closed via a hinge to open and close the fire hose passage hole. A small door is rotatably attached, the small door is made by bending a sheet metal as a material, a rectangular main body plate portion, and a plate portion continuously provided at right angles to one long side of the main body plate portion, A plate portion that is connected to the other long side of the main body plate portion at a right angle and narrower than the plate portion, and an outer end of the plate portion that is connected to the other long side of the main body plate portion. A magnet mounting plate part connected at right angles and two short sides of the main body plate part And a hinge mounting plate provided so as to project outwardly at right angles from the tip of one of the plates connected to the two short sides, and the main body plate The back side of the hinge is in a hollow state, and one blade of the hinge is overlapped and fixed to the outer surface of the hinge mounting plate, and the other blade of the hinge is on the fire hose passage hole side of the fire door It is fixed to the wall, and the hinge is provided with a spring that urges the small door in the direction to close the fire hose passage hole. Further, a magnet is attached to the outer surface of the magnet mounting plate, and the small door is fire-fighting. When the hose passage hole is closed, the magnet is configured to abut against the door stop plate portion of the fire door to keep the fire door closed.

  The fire hose passage hole opening and closing device for a fire door according to claim 2 is provided with a fire prevention at a joint portion between a main body plate portion of the small door and a plate portion continuously provided on two short sides and the other plate portion. A summing plate portion is provided along the summing plate portion on the door side.

  As described above, the fire hose passage hole opening and closing device in the fire door of the present invention is made so that the small door is bent with a sheet metal as a material and the back side of the main body plate portion is in a hollow state. Part and a hinge attached to a hinge mounting plate provided so as to project outward at a right angle from the tip of one of the plates connected to the two short sides. Since the number of points is small and the weight is reduced, an inexpensive fire hose passage hole opening and closing device can be provided.

Embodiments of the present invention will be specifically described below with reference to the drawings.
First, the first embodiment shown in FIG. 1 to FIG. 8 will be described. 1 is a fire hose passage formed at the lower end of the fire door 3 so as to be rotatable around a vertical axis via a hinge 2. The small door 1 is a small door made by bending a sheet metal attached to the hole 4. The small door 1 is a horizontally long rectangular main body plate portion 5 that faces in the vertical direction, and is perpendicular to the lower end that is one long side of the main body plate portion 5. A horizontal bottom plate portion 6 that is connected to the upper end of the main body plate portion 5, a horizontal upper plate portion 7 that is connected to the upper end, which is another long side, at a right angle and is narrower than the bottom plate portion 6, A magnet mounting plate portion 8 that is connected to the tip of the plate portion 7 at a right angle upward, side plate portions 9 and 10 that are connected to the left and right sides that are the two short sides of the main body plate portion 5, and the side plate portion 9 and 10, the attachment plate portion 11 of the hinge 2 connected to the tip of one side plate portion 9 outwardly at a right angle It is configured.

  More specifically, an upward folded piece 12 is connected at a right angle to the tip of the bottom plate portion 6, and an inward folded piece 13 is perpendicular to the tip of the other side plate portion 10 among the side plate portions 9, 10. It is connected continuously. Further, a reinforcing plate 14 made of a sheet metal bent so as to overlap the inner surface of the hinge mounting plate portion 11 and the inner surface of one side plate portion 9 and further the inner surface of the magnet mounting plate portion 8 is formed on the inner surface of the hinge mounting plate portion 11. It is attached by welding or screw. In this way, one blade plate 15 of the hinge 2 is overlapped on the outer surface of the hinge mounting plate portion 11 to which the reinforcing plate 14 is mounted and fixed by screws 16, and the other blade plate 17 of the hinge 2 is attached to the fire door 3. It is fixed to the side wall surface 18 of the fire hose passage hole 4 with screws 19. The hinge 2 is provided with a spring 20 that urges the small door 1 attached to the fire door 3 in a direction to close the fire hose passage hole 4. Further, a magnet 21 is screwed to the outer surface of the magnet mounting plate portion 8 at an upper position of the upper plate portion 7, and the magnet 21 is connected to the fire door 3 when the small door 1 closes the fire hose passage hole 4. The fire door 3 is kept closed by abutting against the iron door stopper plate 22.

  By the way, the small door 1 has the small door 1 positioned in the fire hose passage hole 4 formed at the lower end of the end of the fire door 3 on the opposite side to the attachment end by the hinge 23 of the fire door 3. It is attached to the fire door 3.

  In the above-described configuration, the fire door 3 provided with the small door 1 is attached to the wall surface 25 of the passage 24 in the building so as to be rotatable around the vertical axis, and this fire door 3 is normally used as a passage in the building. 24, the main body plate portion 5 of the small door 1 faces the passage 24 side. Although the back side of the main body plate portion 5 of the small door 1 is in a hollow state, it cannot be seen from the side of the passage 24 in a normal state, and there is no sense of discomfort in appearance. When a fire occurs, the fire door 3 is closed to block the passage. The fire hose 26 is opened by rotating the small door 1 of the fire door 3 around the vertical axis against the force of the spring 20 provided on the hinge 2 and passes through the fire hose passage hole 4.

  By the way, in 1st Embodiment described above, the small door 1 is a fire hose formed in the lower end part of the edge part of the fire door 3 on the opposite side to the attachment side edge part by the hinge 23 of the fire door 3. Although the small door 1 is positioned in the passage hole 4 and attached to the fire door 3, the attachment position of the small door 1 may be any position in the width direction of the fire door 3. It is also possible to support the small door 1 so as to be rotatable around a horizontal axis.

  Next, a second embodiment shown in FIGS. 9 to 13 will be described. In the second embodiment, the main body plate portion 5 and the other side plate portion 10 of the small door 1 of the first embodiment are used. The summing plate portion 27 is provided in the connecting portion. More specifically, the summing plate portion 27 is formed so that a double-structured plate portion is formed between the main body plate portion 5 and the other side plate portion 10 so as to protrude from the main body plate portion 5 to the side. It is integrally formed between the plate part 5 and the other side plate part 10. This summing plate part 27 comes along the summing plate part 28 formed on the fire door 3 side to which the small door 1 is attached. Other configurations are the same as those of the first embodiment.

In addition, you may make it form the said summing board part 27 together using another board | plate material.
Next, the third and fourth embodiments shown in FIG. 14 and FIG. 15 will be described. In the above two embodiments, the hinge 2 connected to the tip of one side plate portion 9 outwardly at a right angle. The attachment plate part 11 is provided and a reinforcing plate 14 is attached to the inner surface of the hinge attachment plate part 11, and one blade plate 15 of the hinge 2 is attached to the outer surface of the hinge attachment plate part 11. A hinge attachment plate 29, which is a separate part, is attached to the inner surface of the portion 9 with screws 30 or the like, and this hinge attachment plate 29 is configured to project outward from the tip of one side plate 9 at a right angle. It is also possible to attach one vane plate 15 of the hinge 2 to the outer surface of the attachment plate portion 29 in an overlapping manner. Note that the third embodiment shown in FIG. 14 is a modification of the first embodiment, and the fourth embodiment shown in FIG. 15 is a modification of the second embodiment. Other configurations are the same as those of the first embodiment and the second embodiment.

It is the perspective view seen from the front side of the small door used for the fire hose passage hole opening / closing apparatus in the fire door of the 1st Embodiment of this invention. It is the perspective view seen from the back side of the small door. It is a horizontal sectional view of the small door. It is a schematic plan view which shows the installation state of the fire door provided with the same small door. It is a front view which shows the attachment state of the small door with respect to the fire door. It is a cross-sectional view which shows the state which attached the small door to the fire door. It is a longitudinal cross-sectional view which shows the state which attached the small door to the fire door. It is a schematic plan view which shows the state which the small door was opened in the state which the said fire prevention door closed, and the fire hose passed. It is the perspective view seen from the front side of the small door used for the fire hose passage hole opening / closing apparatus in the fire prevention door of the 2nd Embodiment of this invention. It is the perspective view seen from the back side of the small door. It is a horizontal sectional view of the small door. It is a front view which shows the state which attached the small door to the fire door. It is a cross-sectional view which shows the state which attached the small door to the fire door. It is a horizontal sectional view of a small door in a 3rd embodiment of the present invention. It is a horizontal sectional view of a small door in a 4th embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Small door 2 Hinge 3 Fire door 4 Fire hose passage hole 5 Main body plate part 6 Bottom plate part 7 Upper plate part 8 Magnet attachment plate part 9, 10 Side plate part 11 Hinge attachment plate part 12, 13 Folding piece 14 Reinforcement board 15 Blade Plate 17 Blade 20 Spring 21 Magnet 22 Door stop plate portion 24 Passage 25 Wall surface 26 Fire hose 27, 28 Summing plate portion 29 Hinge mounting plate portion 30 Screw

Claims (2)

To the lower end of the fire door attached to the wall surface so as to be rotatable around the vertical axis between the state where the passage is opened along the wall surface of the passage and the state where the passage is closed to block the passage of the building A fire hose passage hole is formed, and a small door is pivotally attached to the fire hose passage hole through a hinge to open and close the fire hose passage hole, and the small door is made by bending a sheet metal as a material. A rectangular main plate, a plate connected to one long side of the main plate at a right angle, and a right angle to the other long side of the main plate, and wider than the plate. A narrow plate portion, a magnet mounting plate portion connected to the front end of the plate portion connected to the other long side of the main body plate portion at right angles outwardly, and two short sides of the main body plate portion Out of the plate part connected to the plate and the plate part connected to the two short sides, from the tip of one plate part The hinge plate provided so as to project at right angles to the hinge plate, the back side of the main plate is hollow, and one of the hinge blades is overlaid on the outer surface of the hinge plate The other blade of the hinge is fixed to the side wall of the fire hose passage hole of the fire door, and the hinge is provided with a spring that urges the small door in the direction to close the fire hose passage hole. In addition, a magnet is attached to the outer surface of the magnet mounting plate, and the magnet is in contact with the door stop plate of the fire door when the small door closes the fire hose passage hole. A fire hose passage hole opening and closing device for a fire door, characterized in that it is configured to hold A summing plate portion is provided along the summing plate portion on the fire door side at the connecting portion between the main plate portion of the small door and the two plate portions connected to the short side, and the other plate portion. The fire hose passage hole opening and closing device for a fire door according to claim 1.

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