JP3532176B2 - Insulated fireproof door - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door for preventing dew condensation on the indoor side when it is cold.

When the door is cold, condensation may occur inside the door. This is because the indoor side of the door is cooled by the outdoor side and becomes cold. Cold doors cool the air they come in contact with.
When the air is cooled, the amount of water that it can contain decreases, and the supersaturated water vapor forms water droplets that condense. This adverse effect can be eliminated by keeping the temperature on the outside of the door close to room temperature. This state can be realized by a structure in which the indoor side is not cooled by cold outdoor cold air, in other words, the indoor side and the outdoor side are thermally insulated.

As a door that realizes this, Japanese Patent Laid-Open No. Hei 1
0-37595 discloses a door having a structure shown in FIGS. 1 and 2. The doors shown in these figures have a channel material 31 in the form of a rectangular frame, and a synthetic resin frame material 32 around the channel material 31.
The indoor side surface plate 33A and the outdoor side surface plate 33B are attached to the frame member 32. The frame member 32 includes an upper frame member 32A, a lower frame member 32B, an indoor vertical frame member 32C, and an outdoor vertical frame member 32D. The vertical member 34 is attached across the indoor frame member 32C and the outdoor frame member 32D. There is. The door connects the inner surface and the outer surface of the metal surface plate 33 with a frame member 32 made of synthetic resin. The thermal conductivity of synthetic resin is smaller than that of metal. For this reason, the door of this structure can connect the front surface plate 33A and the rear surface plate 33B in a heat insulating state.

[0004]

However, the door having the structure shown in FIG. 1 and FIG.
The frame member 32 made of synthetic resin is connected to the outside of the frame 1, and the peripheral edge of the surface plate 33 and the vertical member 34 are connected to the frame member 32, so that the frame member 32 can be connected to an accurate position. Must be molded with high precision. When the accuracy of the frame member 32 is low, the channel member 31, the surface plate 33, and the vertical member 34
It may not be possible to accurately connect and, which may cause deformation and rattling, and may also fail to ensure heat insulation. further,
Since the frame material made of synthetic resin needs to be separately molded according to the type, shape and size of the door, it has a drawback that it cannot be manufactured at low cost.

Further, in the door having the structure shown in the figure, since the metal surface plate 33 on the indoor side and the outdoor side is connected by the frame member 32 made of synthetic resin, the surface plate 33 on the indoor side and the outdoor side has a strong structure. It is difficult to connect with. This is because the strength and hardness of the synthetic resin are lower than those of metals such as iron. Moreover, the frame material made of synthetic resin is melted and deformed when heated to a high temperature. Therefore, when a fire occurs, the metal channel material, the surface plate, and the vertical member cannot be held in a predetermined connected state, and the function of the door is lost, which may be extremely dangerous. As described above, since the door of this structure uses the frame material made of synthetic resin, it cannot be a class A fire resistant structure (specific fire protection equipment). Therefore, a door with a class A fireproof structure that can effectively prevent dew condensation in the room is not currently developed.

The present invention was developed for the purpose of solving the above-mentioned drawbacks of conventional doors and effectively preventing dew condensation in a room. An important object of the present invention is to provide excellent heat insulation properties. The object is to provide a door that realizes a firm strength and, if necessary, a class A fireproof structure to effectively prevent dew condensation. Further, another important object of the present invention is to provide a door which has an extremely simple structure and can be manufactured at low cost to realize excellent heat insulating properties and strength.

[0007]

A heat-insulating refractory door of the present invention is a door frame member 3 having side walls 8 on both sides and having a U-shaped cross section, and the side walls 8 of the frame member 3 from the outside to the inside. A metal-made front plate 4 having a U-bend along its edge, and the front plate 4
It is sandwiched between the heat insulating layer 9 laminated on the surface of the above, the decorative edge 6 fitted in the U-shaped groove portion 5, the side wall 8 of the frame member 3 and the inner surfaces of the front and back face plates 4. A heat insulating film 7 is provided.

The heat insulating film 7 is preferably a plastic film. As the heat insulating film 7, a plastic film having an adhesive layer can be used. The heat insulating film 7 can be adhered to the surface of the side wall 8 of the frame member 3 with an adhesive layer, or can be adhered to the inner surface of the surface plate 4. Further, the heat insulating film 7 can be formed by molding plastic into a shape having a U-shaped cross section. Surface plate 4
A metal plate whose surface is covered with the heat insulating layer 9 can be used for the.

Further, in the heat-insulating refractory door of the present invention, a pair of frame members 3 which are U-bent on the surface plate 4 and sandwiched between the side walls 8 are vertical frames 3A of the door, and which are arranged on the front and back sides of the door. Surface plate 4
Are connected to each other on the outer surface of the horizontal frame 3B of the door, and the heat insulating film 7 is sandwiched between the horizontal frame 3B and the surface plate 4 to insulate the vertical frame 3A and the horizontal frame 3B of the door. You can also

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. However, the examples described below exemplify an adiabatic fireproof door for embodying the technical idea of the present invention, and the present invention does not specify the adiabatic fireproof door as follows.

Further, in this specification, in order to make the claims easy to understand, the numbers corresponding to the members shown in the embodiments are referred to as "claims column" and "to solve the problems." It is added to the members shown in "Means column". However, the members shown in the claims are not limited to the members of the embodiment.

The heat-insulating refractory door shown in the horizontal sectional view of FIG. 3 and the vertical sectional view of FIG. 4 is connected to the inside of a door frame 1 having a heat insulating structure through a hinge 2 so as to be opened and closed. This heat-insulating fireproof door includes a frame member 3, a surface plate 4 fixed to both sides of the frame member 3, a decorative edge 6 fitted in a groove 5 of the frame member 3 to fix the surface plate 4, The heat insulating film 7 sandwiched between the frame member 3 and the surface plate 4 is provided.

The frame member 3 connects the vertical frame 3A and the horizontal frame 3B in a rectangular shape. Figure 3 shows a horizontal cross section of an adiabatic fireproof door,
Shows a vertical cross section of an adiabatic refractory door. The vertical frame 3A and the horizontal frame 3B, which are the frame members 3 shown in these figures, have side walls 8 on both sides and have a horizontal cross section of a U-shape. Vertical frame 3A that is this frame material 3
The horizontal frame 3B is a steel plate having a thickness of 1.6 mm, and the surface thereof is hot dip galvanized. However, the frame member 3 can be made such that the steel plate is thicker or thinner than this. The horizontal frame 3B and the vertical frame 3A on the hinge 2 side have the same height of the side walls 8 on both sides, but the vertical frame 3A on the door stop side lengthens the side wall 8 on the opening side. The U-shaped door frame 1 is connected so that the groove is on the outside.

The surface plate 4 is a metal plate such as an iron plate having a heat insulating layer 9 laminated on the surface thereof, as shown in the partially enlarged sectional views of FIGS. 5 and 6. The thickness of the iron plate is 0.6 mm, for example. The heat insulating layer 9 on the surface is a plastic sheet such as a vinyl chloride sheet or a coating film. The plastic sheet is adhered to the metal plate, and the coating film is laminated by applying a paint. The heat insulating layer 9 is also used as the surface treatment layer of the metal plate. Surface plate 4
Has U-shaped ends on both sides thereof along the side wall 8 of the vertical frame 3A as shown in the sectional views of FIGS. That is, both end portions of the surface plate 4 are bent from the outside to the inside along the side wall 8 and are connected to the vertical frame 3A.

The decorative edge 6 is fitted into the groove 5 of the vertical frame 3A to fix the surface plate 4. The decorative edge 6 in the figure is formed by bending a metal plate into a U-shape. The metal plate is a polyvinyl chloride-coated steel plate having a thickness of 0.6 mm. The decorative edge 6 is firmly fixed by being bonded to the groove portion 5 of the vertical frame 3A. The hinge 2 is screwed and fixed to the decorative edge 6, and the door is connected to the door frame 1 via the hinge 2.

As shown in FIGS. 4 and 6, the front and back surface plates 4 of the door are stacked on the outer surface of the lateral frame 3B with the upper and lower edges bent at right angles. The front and back face plates 4 are rivets 23.
Are connected by. The front and back surface plates 4 stacked on the outer side of the horizontal frame 3B are laminated via the front heat insulating layer 9, so that the heat insulating layer 9 blocks heat conduction from the front and back surface plates 4. Rivet 2
The parts connected by 3 conduct heat. However, since the rivets 23 are connected in a dot shape as shown in FIG. 6, the area for heat conduction is small, and the heat conduction for this portion does not increase either. Therefore, the front and back surface plates 4 can be connected while being insulated. However, the lap portion can be connected by spot welding. Also in the case of spot welding, the area where heat is conducted is made small by connecting points.

The heat insulating film 7 blocks the heat conduction of the front and back surface plates 4 and prevents dew condensation from occurring inside the door. The heat insulating film 7 is sandwiched between the side wall 8 of the frame member 3 and the inner surface of the surface plate 4, and blocks heat conduction between the front and back surface plates 4. Since the front and back surface plates 4 are connected via the frame member 3, the heat conduction between the front plate 4 and the frame member 3 can be blocked, and the mutual heat conduction between the front and back surface plates 4 can be blocked. The heat insulating film 7 is a plastic molding material formed by molding a plastic film or plastic into a shape having a U-shaped cross section.

The plastic film of the heat insulating film 7 includes polyethylene film, polypropylene film,
It is a polyvinyl chloride film, a polyester film, or a film obtained by laminating these films. Plastic films are thin and exhibit excellent thermal insulation properties. The thickness of the plastic film is 0.1 mm. However, for plastic film, 0.05-0.5mm
It is also possible to use the one of thickness. A thicker plastic film can be used to further improve the insulation properties. As shown in FIG. 7, the heat insulating film 7, which is a plastic molding material, has U
It can be easily attached to the frame member 3 by forming it into a shape having a U-shaped portion 7A that is formed in a character shape.

The heat insulating film 7 can be easily attached at a fixed position by adhering it with an adhesive layer. The heat insulating film 7, which is a plastic film, can be attached at a fixed position by adhering the adhesive layer to the side wall 8 of the frame member 3 or the inner surface of the face plate 4. The heat insulation film 7, which is a plastic molding material, can also be attached in place by adhering the adhesive layer to the frame material 3. The door shown is
Since both sides of the surface plate 4 are bent along the side wall 8 of the vertical frame 3A, the heat insulating films 7 are provided on both sides of the side wall 8 of the vertical frame 3A as shown in FIG. The horizontal frame 3B is the front plate 4
As shown in FIG. 6, the frame material 3 is not bent to the side wall 8.
The heat insulating film 7 is sandwiched between the side wall 8 and the side wall 8.

The door having the above structure is connected to a building through a door frame 1 as shown in FIGS. The door frame 1 shown in these figures includes a vertical frame 15, an upper frame 16, and a lower frame 1 on both sides.
4 and. The upper frame 16 connects the upper ends of the vertical frames 15 on both sides. The lower frame 14 connects the lower ends of the vertical frames 15 on both sides. The door frame 1 includes a vertical frame 15 and an upper frame 16 on both sides.
And the lower frame 14 are connected in a rectangular shape. With this structure, the door frame 1 can be connected to a rectangular shape at a manufacturing plant and transported to a construction site. However, the door frame of the present invention does not necessarily require the lower frame. This is because the vertical frame and the upper frame can be connected to the building frame such as concrete or a wall, and the lower end of the vertical frame can be placed between the floor and the soil.

The door frame 1 in the figure is made of iron. Vertical frame 1 on both sides
5 and the upper frame 16 are composed of a first frame 11 and a second frame 12. As shown in the sectional view of FIG. 4, the lower frame 14 is manufactured by connecting two bent iron plates by a method such as welding.
In the door frame 1 shown in these drawings, the first frame 11 is arranged on the indoor side and the second frame 12 is arranged on the outdoor side. However, although not shown, the door frame of the present invention can be arranged such that the first frame is the outdoor side and the second frame is the indoor side.

The first frame 11 is manufactured by bending an iron plate cut into a predetermined width. The first frame 11 is the guide groove 1
It is bent into a groove type with 7. The guide groove 17 has an opening on the side facing the second frame 12 so that a part of the second frame 12 can be inserted. In the vertical frame 15 of FIG. 3, the second frame 12 is arranged on the upper side and the first frame 11 is arranged on the lower side in the figure, so that the guide groove 17 of the first frame 11 is open on the upper side. The upper frame 16 in FIG. 4 has the first frame 11 on the right side and the second frame 12 on the left side in the figure,
The guide groove 17 is open on the left side.

Further, the first frame 11 shown in FIG. 3 and FIG.
The inner width of the guide groove 17 is made wider than the thickness of the folded portion 18 of the second frame 12. In the first frame 11 in the figure, the inner width of the guide groove 17 is approximately twice the thickness of the folded portion 18 of the second frame 12. Further, the first frame 11 is provided with a door support portion 20 along an edge portion which is the inside of the door frame 1. The door support part 20 is a part bent in a direction of closing a part of the opening of the guide groove 17. The door retainer support 20 is provided to fix the airtight packing 13 in place. The door support 20 has partition walls 21 on both sides so that the airtight packing 13 is not displaced. Door support part 2
The partition wall 21 on one side of 0 is the second frame 12. The other partition wall 21 on one side is provided by a lap portion 22 in the middle of the first frame 11. The wrap portion 22 is formed by folding back the iron plate so that the iron plate projects inward from the door support part 20. This door frame 1 has a feature that the airtight packing 13 can be easily fixed in place so as not to be displaced.

The first frame 11 shown in the drawing is bent so that the entire cross section has a U-shape. Then, the door support part 2 is formed so as to close a part of the opening of the guide groove 17.
0 is set. A wrap portion 22 is provided along the side edge of the door support portion 20.

The second frame 12 is formed by bending an iron plate so that the overall shape is a cross-sectional shape close to that of C-shaped steel. The second frame 12 shown in the figure is formed by bending both side portions of an iron plate outward in a U-shape and providing folding portions 18 on both sides. It is not necessary to specify the direction in which the second frame 12 that is bent on both sides in the same manner is connected to the first frame 11. The folding part 18 has a guide groove 17
Has a facing surface facing the bottom surface. The facing surface is the folded portion 1.
With 8 placed in the guide groove 17, it becomes parallel to the bottom surface of the guide groove 17. The opposing surfaces of the folded portion 18 and the bottom surface of the guide groove 17, which are parallel to each other, sandwich and fix the heat insulating material 19 disposed therebetween. The entire width (W) of the second frame 12 is larger than the depth (d) of the guide groove 17. As shown in the second
This is for disposing the door inside the protruding portion where the frame 12 projects from the first frame 11.

The thickness of the folded portion 18 of the second frame 12 is substantially equal to the opening width of the guide groove 17. In the door frame 1 having this structure, the folded-back portion 18 of the second frame 12 can be inserted into the guide groove 17 of the first frame 11 so that the first frame 11 and the second frame 12 can be connected to each other at correct positions without play.

The heat insulating material 19 is put in the bottom of the guide groove 17 of the first frame 11. This heat insulating material 19 is
With the frame 12 connected, the bottom surface of the guide groove 17 and the folded portion 1
It is fixed by sandwiching it with the opposing surface of 8. First frame 11 and second
The frame 12 is processed into a shape having a gap between the bottom surface of the guide groove 17 and the facing surface of the folded portion 18. This is because the heat insulating material 19 is sandwiched in this gap. The heat insulating material 19 is an elastic material that can be elastically deformed, for example, a foam of soft synthetic resin. The heat insulating material 19 has a width substantially equal to the inner width of the guide groove 17, and has a thickness larger than the gap between the bottom surface of the guide groove 17 and the facing surface of the folded portion 18 which are connected to each other. When the heat insulating material 19 is sandwiched between the bottom surface of the guide groove 17 and the facing surface of the folded portion 18, the heat insulating material 19 is crushed to a slight extent.
Therefore, the bottom surface of the guide groove 17 and the facing surface of the folded portion 18 are fixed in close contact with each other without a gap. This structure is the first frame 11
And the second frame 12 are connected in an airtight state. Therefore, draft air does not pass through the door frame 1.

The door frame 1 shown in the figure includes a first frame 11 and a second frame 12.
Are fixed by connecting with a set screw (not shown). The set screw penetrates the bottom surface of the guide groove 17 and is screwed into the facing surface of the second frame 12 to fix the first frame 11 and the second frame 12. With this structure, the gap between the facing surface and the bottom of the guide groove 17 can be adjusted to an optimum value by the screwing amount of the set screw.

The door frame 1 having the above structure is assembled in the following steps. (1) Put the heat insulating material 19 in the guide groove 17 of the first frame 11. (2) The folded portion 18 of the second frame 12 is formed into the guide groove 1 of the first frame 11.
Put in 7. (3) From the outside of the first frame 11, penetrate the bottom surface of the guide groove 17 and screw in a set screw toward the heat insulating material 19 of the folded portion 18, to connect and fix the first frame 11 and the second frame 12. To do. In this state, the heat insulating material 19 is attached to the bottom surface of the guide groove 17 and the folded portion 1.
It is sandwiched in a state of being crushed to some extent between the opposing surface of 8 and.

The door frame 1 can be assembled by connecting the vertical frame 15 connecting the first frame 11 and the second frame 12 and the upper frame 16. However, as shown in FIG. 8, the vertical frame 15 and the first frame 11 of the upper frame 16 are connected at a right angle, and the guide groove 17 of the first frame 11 is connected to the vertical frame 15 and the upper frame 16 at a right angle. Frame 16
It is also possible to insert the second frame 12 of and connect them.

[0031]

EFFECTS OF THE INVENTION The heat-insulating fireproof door of the present invention has a feature that it can effectively prevent dew condensation while realizing excellent heat-insulating characteristics and firm strength. That is, the heat-insulating fireproof door of the present invention is provided with a metal surface plate having a U-shaped edge so as to extend from the outside to the inside of the side wall of the frame material of the door having a U-shaped cross section. This is because the heat insulating film is sandwiched between the side wall of the frame member and the inner surface of the surface plate. Since the door of this structure is connected in a state in which the heat insulating film is sandwiched without directly contacting the door surface plate and the frame member,
The heat insulation film can insulate the surface plate and the frame material.
Therefore, the door of the present invention can effectively prevent the dew condensation due to the temperature difference between the indoor side and the outdoor side by connecting the indoor side surface plate and the outdoor side surface plate in a heat insulating state.

Further, in the door of the present invention, since the heat insulating film is sandwiched between the inner surface of the metal surface plate and the frame material to insulate them, the frame material, the surface plate and the decorative edge are specially designed. However, it is possible to use a member that has already been manufactured at present to obtain a door having an excellent heat insulating structure. Moreover, since the same heat insulating film can be used regardless of the type, shape and size of the door, there is also a feature that the heat insulating film can be mass-produced at low cost and the manufacturing cost can be reduced.

Furthermore, since the door of the present invention is manufactured without using a frame material such as synthetic resin as in the conventional case,
In addition to achieving excellent strength, it has the feature that it can be made into a class A fire resistant structure (specific fire protection equipment) if necessary.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a conventional door.

FIG. 2 is a vertical sectional view of the door shown in FIG.

FIG. 3 is a cross-sectional view of a heat-insulating fireproof door according to an embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of the heat-insulating fireproof door shown in FIG.

5 is an enlarged cross-sectional view of the heat-insulating fireproof door shown in FIG.

FIG. 6 is an enlarged sectional perspective view of the heat-insulating fireproof door shown in FIG.

FIG. 7 is a sectional perspective view showing an example of a heat insulating film.

FIG. 8 is a perspective view showing an example of a connecting structure of a vertical frame and an upper frame.

[Explanation of symbols]

1 ... Door frame 2 ... Hinge 3 ... Frame material 3A ... Vertical frame 3
B ... Horizontal frame 4 ... Surface plate 5 ... Groove 6 ... Decorative edge 7 ... Thermal insulation film 7A ... U curved portion 8 ... Side wall 9 ... Thermal insulation layer 11 ... First frame 12 ... Second frame 13 ... Airtight packing 14 ... Bottom frame 15 ... Vertical frame 16 ... Upper frame 17 ... Guide groove 18 ... Folding part 19 ... Heat insulating material 20 ... Door support part 21 ... Partition wall 22 ... Wrap part 23 ... Rivet 31 ... Channel material 32 ... Frame material 32A ... Upper frame material 3
2B ... Lower frame member 32C ... Indoor vertical frame member 32D ... Outdoor vertical frame member 33 ... Surface plate 33A ... Indoor surface plate 3
3B ... Outdoor surface plate 34 ... Vertical member

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 2001-280035 (JP, A) JP 10-131638 (JP, A) JP 11-58565 (JP, A) JP 9-32424 (JP, A) Actual opening Sho 58-95489 (JP, U) Actual opening Sho 61-163811 (JP, U) Actual opening Sho 62-79081 (JP, U) Actual opening Sho 58-110183 (JP, U) ( 58) Fields investigated (Int.Cl. ⁷ , DB name) E06B 5/00, 3/76 A62C 2/06 501

Claims (6)

(57) [Claims] 1. A cross-section having side walls (8) on both sides to a U-shaped <br/>, and vertical frame (3A) and the horizontal frame a (3B) coupled to the square, the groove
And a frame member of the door that the outer (3), both surfaces of the frame member (3)
The metal surface plate (4) , which is fixed to the vertical frame (3A) and has a U-shaped end portion that extends from the outside to the inside of the side wall (8).
A heat insulating layer (9) laminated on the surface of the face plate (4), and a vertical frame (3
It is fitted in the U-shaped groove (5) of ( A) and the surface plate (4) is fixed.
An adiabatic fireproof door comprising a decorative edge (6) and a heat insulating film (7) sandwiched between the side wall (8 ) of the vertical frame (3A) and the inner surfaces of the front and back face plates (4). 2. An insulating fireproof door according to claim 1, wherein the insulating film (7) is a plastic film. 3. The heat-insulating fireproof door according to claim 1, wherein the heat-insulating film (7) is a plastic film having an adhesive layer, and is adhered to the surface of the side wall (8) of the frame member (3) with the adhesive layer. 4. The heat-insulating fireproof door according to claim 1, wherein the heat-insulating film (7) is a plastic film having an adhesive layer and is adhered to the inner surface of the face plate (4) with the adhesive layer. 5. The heat-insulating fireproof door according to claim 1, wherein the heat-insulating film (7) is a film formed by molding plastic into a shape having a U-shaped cross section. 6. The heat-insulating fireproof door according to claim 1, wherein the frame member (3) which is bent in a U-shape on the surface plate (4) and is sandwiched between the side walls (8) is a vertical frame (3A) of the door. .