JP2017031685A - Fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting hardly causing a clearance between a door frame and a surface material even when exposed to a flame.SOLUTION: A fitting comprises an opening frame for forming an opening and a door body having a pair of mutually opposed metallic surface materials and a metallic door frame provided between the pair of surface materials and supported by the opening frame so as to be capable of opening-closing the opening, and the pair of surface materials are respectively provided with a folding-back edge part for forming a folding-back surface for mutually turning to the other surface material side by folding back the edge part to the reverse surface side, and the door frame is provided with an insertion part for inserting the folding-back edge part into the inside of the door frame, and among the folding-back edge parts respectively possessed by the pair of surface materials, at least any one folding-back edge part is provided with a heating foam material for foaming by being heated by the folding-back surface.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a joinery having a door body provided with a door frame between a pair of surface materials.

  As a door body in which a door frame is provided between a pair of surface materials, for example, a metal door formed by joining inner and outer door panels via a U-shaped reinforcing material (for example, It is supported by a hinge so that it can be opened and closed. In this door, a slit is formed in the reinforcing material along the length direction, and a protrusion formed at an end portion of each door panel bent into a U-shape is fitted into the slit.

Japanese Utility Model Publication No. 61-8283

  The metal door as described above is such that the projection formed at the end of the surface material such as each door panel is only fitted into the slit formed in the door frame such as a reinforcing material. When the door is exposed to a flame and deformations such as warping occur in each surface material, the end portion of the surface material folded into a U-shape spreads wider than the angle at which it was folded and the projections are released from the slit, There is a problem in that a gap is generated between the door frame and the surface material, and a flame may enter the door from the generated gap.

  This invention is made | formed in view of this subject, The place made into the objective provides the fitting provided with the door body which a clearance gap does not produce easily between a door frame and a surface material even if exposed to a flame. There is.

  In order to achieve such an object, the joinery of the present invention includes an opening frame that forms an opening, a pair of metal surface materials facing each other, and a metal door frame provided between the pair of surface materials, A door body supported by the opening frame so that the opening can be opened and closed, and each of the pair of surface materials is folded back toward the other surface material side with edges thereof folded back on the back surface side. A folding edge portion that forms a surface, and the door frame includes an insertion portion that is inserted into the inside of the door frame, and the pair of surface materials each includes the folding edge portion. At least one of the folded edges is provided with a heating foam material that is heated and foamed on the folded surface.

  According to such a joinery, at least one of the folded surfaces of the folded edge portions that are provided at the edge portions of the pair of surface materials and are folded back and inserted into the insertion portion is heated and foamed. Therefore, when the fire door is exposed to the flame and heated, the heated foam material provided on the folded surface facing the other surface material side swells to the other surface material side, so it foamed. The folded edges are pressed by the heating foam material in the direction in which the distance between them is increased. For this reason, even if deformation such as warping occurs in a pair of surface materials, it is suppressed from being bent back so as to spread from the folded angle, so even if exposed to a flame, the door frame and each surface material It is possible to provide a fire door that does not easily cause a gap between the two.

It is such a joinery, and preferably includes a lock for locking the door body, and the insertion portion is a hole in which the lock is mounted.
According to such a joinery, there is no need to separately provide an insertion portion in the door frame just for inserting the folded edge portion.

In such a joinery, it is preferable that the lock is disposed between the folded surfaces of the pair of surface materials.
According to such a joinery, the heated foamed material is foamed between the folded edge and the lock, which is narrower when the lock is disposed. For this reason, it is possible to provide a fire door in which the pressing force of the foamed heated foam material on the folded edge portion is increased, and a gap is less likely to be generated between the door frame and each surface material.

In such a joinery, it is preferable that the heating foam material is provided on the folded surface of each of the surface materials.
According to such a joinery, the heating foam material is provided on the folded surfaces facing each other to the other surface material side, so the pressing force acting on the folded edge by the foamed heating foam material on each side respectively Becomes larger. For this reason, it is possible to provide a fire door that is less likely to cause a gap between the door frame and each surface material.

  ADVANTAGE OF THE INVENTION According to this invention, even if it expose | bleaches to a flame, it is possible to provide the fitting provided with the door body which a clearance gap does not produce easily between a door frame and a surface material.

It is a front view which shows the fitting which concerns on this embodiment. It is a perspective view explaining the composition of the entrance door which the fitting concerning this embodiment has. It is an enlarged view of the A section in FIG. It is an enlarged view of the B section in FIG. It is a cross-sectional view of the door-end part in an entrance door.

Hereinafter, a fitting according to an embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, as a fitting, for example, as shown in FIGS. 1 to 5, an entrance door 1 a as a door body that partitions indoors and outdoors and has fire resistance, and an opening 1 c that can be opened and closed by the entrance door 1 a are formed. The fitting 1 having the opening frame 1b will be described as an example.

  The entrance door 1a of the joinery 1 of the present embodiment includes an aggregate 2 as a steel door frame surrounding the four circumferences, a metal inner surface material 3 provided on the indoor side of the aggregate 2, and an aggregate 2 A metal outer surface material 4 provided on the outdoor side, a lock reinforcing member 6 provided with a lock 5 provided on the door end side of the aggregate 2, and an area surrounded by the aggregate 2 and the inner surface material 3 And a panel-like heat insulating material 7 provided in a space formed between the outer surface material 4 and the outer surface material 4. Here, the inner surface material 3 and the outer surface material 4 correspond to a pair of metal surface materials facing each other.

  The entrance door 1a shown in FIG. 1 can be equipped with a double-glazed glass or the like along the longitudinal direction of the entrance door 1a in the vicinity of the center in the width direction, that is, the vertical direction in a state where the entrance door 1a is attached to a building or the like Although the frame portion 8 is provided, the middle frame portion 8 is not necessarily provided.

  The aggregate 2 is formed by joining four frame members obtained by processing a steel plate so that the cross section has a U-shape in a rectangular shape. Further, a synthetic resin plate material 9 is bonded to the inner facing portion 2a facing the inner surface material 3 and the outer facing portion 2b facing the outer surface material 4 of the aggregate 2 over almost the entire length. Has been.

  On the outer periphery of the door 1a on the door side of the aggregate 2, that is, on the prospective surface 2c along the thickness direction, the lock 5 disposed inside the lock reinforcing member 6 is located near the center in the longitudinal direction of the door 1a. When the flange portion 5c is fixed to the expected surface 2c, a rectangular hole 2d through which the main body portion 5a is inserted is provided. Here, the hole 2d corresponds to a hole in which the lock 5 is mounted.

  The hole 2d is provided in the prospective surface 2c of the aggregate 2. The prospective surface 2c does not remain on the indoor side and the outdoor side of the hole 2d, and only the inner facing portion 2a and the outer facing portion 2b exist. .

  The lock reinforcing member 6 includes the inner plate portion 6a facing the inner surface material 3, the outer plate portion 6b facing the outer surface material 4, and the edges on the door bottom side of the inner plate portion 6a and the outer plate portion 6b. It is formed by a connecting plate portion 6c that is connected and extends in the expected direction. That is, the lock reinforcing member 6 has a groove shape such that the connecting plate portion 6c forms the bottom. The lock 5 is disposed such that the dead bolt 5b is positioned on the door end side when the flange portion 5c is fixed to the prospective surface 2c and disposed between the inner plate portion 6a and the outer plate portion 6b. The member 6 is fixed to the aggregate 2 with screws or rivets by a fixing member 6d. In a state where the lock reinforcing member 6 is fixed, the main body portion 5 a of the lock 5 is arranged inside the aggregate 2, and the flange portion 5 c of the lock 5 protrudes from the aggregate 2 to the door end side.

  The inner surface material 3 and the outer surface material 4 have rectangular hole portions 3 a and 4 a that match the middle frame portion 8 at the center, and are arranged so as to cover the space surrounded by the aggregate 2. The peripheral edge portions are bent in opposite directions to form bent edge portions 3b and 4b, and the bent edge portions 3b and 4b are formed so as to overlap the expected surface 2c of the aggregate 2. . The bent edges 3b and 4b overlaid on the expected surface 2c of the aggregate 2 are fixed to the aggregate 2 with rivets, screws or the like. At this time, in the part of the aggregate 2 where the hole 2d is provided on the door end side, since the area of the prospective surface 2c is small, the bent edges 3b and 4b of the inner surface material 3 and the outer surface material 4 are aggregated. 2 cannot be fixed with screws or rivets.

  When the entrance door 1a is exposed to a flame or the like, the inner surface material 3 and the outer surface material 4 are warped, and there is a gap between the inner surface material 3 and the outer surface material 4 and the aggregate 2 in the vicinity of the hole 2d. There is a risk that a flame may enter the entrance door 1a from the generated gap. For this reason, in the entrance door 1a of this embodiment, in the part in which the hole 2d is provided, the inner facing part 2a or the outer part is formed on a part of the bent edges 3b and 4b of the inner surface material 3 and the outer surface material 4. The bent edge portions 3b and 4b are left slightly wider than the thickness of the facing portion 2b and the synthetic resin plate material 9, and the inner side of the region surrounded by the aggregate 2 on the tip side, that is, the inner surface material 3 and the outer surface Folded edges 3 c and 4 c are provided on the back side of the material 4. The folded edge 3c of the inner surface material 3 has a folded surface 3e facing the outer surface material 4, and the folded edge 4c of the outer surface material 4 has a folded surface 4e facing the inner surface material 3 side. Thermally expandable graphite 10 is provided as a heating foam material.

  The front door 1a includes a panel-like heat insulating material 7 in a region surrounded by the aggregate 2 to which the lock reinforcing member 6 is attached, and when the inner surface material 3 and the outer surface material 4 are arranged, the inner surface material 3 The folded edge portion 3c is inserted into the hole 2d and disposed between the inner facing portion 2a of the aggregate 2 and the inner plate portion 6a of the lock reinforcing member 6, and the folded edge portion 4c of the outer surface material 4 is inserted into the hole 2d. Inserted and disposed between the outer facing portion 2 b and the outer plate portion 6 b of the lock reinforcing member 6. That is, the thermally expandable graphite 10 provided on the folded surfaces 3 e and 4 e of the inner surface material 3 and the outer surface material 4 is disposed so as to face the lock reinforcing member 6. Here, the hole 2d corresponds to an insertion portion into which the folded edge portions 3c and 4c are inserted.

  When the entrance door 1a is exposed to a flame due to a fire or the like, it is provided at the peripheral edge of the inner surface material 3 and the outer surface material 4, and is folded to the back side and inserted into the hole 2d. Thermally expandable graphite 10 provided on the folded surfaces 3e and 4e of 3c and 4c respectively foam toward the lock reinforcing member 6. At this time, the folded edge portions 3 c and 4 c are pressed away from the lock reinforcing member 6 by the foamed thermally expandable graphite 10. For this reason, even if the inner surface material 3 and the outer surface material 4 are deformed such as warpage due to heat, the folded edge portions 3c and 4c are prevented from being bent back so as to be wider than the folded angle. Is done.

  Further, the inner facing portion 2a of the aggregate 2 and the synthetic resin plate 9 are sandwiched between the folded edge portion 3c of the inner surface material 3 and the portion 3d facing the indoor surface of the inner surface material 3, and the outer surface material 4 The outer facing portion 2b of the aggregate 2 and the synthetic resin plate 9 are sandwiched between the folded edge portion 4c and the portion 4d of the outer surface material 4 facing the outdoors. For this reason, it is possible to provide the entrance door 1a in which a gap is hardly generated between the aggregate 2, the inner surface material 3, and the outer surface material 4 even when exposed to a flame. In particular, by forming a hole 2d in the aggregate 2 so that the main body 5a of the lock 5 is inserted in the outer peripheral portion of the entrance door 1a, the peripheral portions of the inner surface material 3 and the outer surface material 4 are made the aggregate 2 It is possible to prevent a gap from being generated between the aggregate 2 and the inner surface material 3 and the outer surface material 4 even in a portion that cannot be fixed with rivets or screws.

  Further, the folded edge portions 3c and 4c of the inner surface material 3 and the outer surface material 4 are inserted into holes 2d formed in the aggregate 2 so that the lock 5 disposed inside the lock reinforcing member 6 is mounted. Therefore, it is not necessary to separately provide the hole 2d in the aggregate 2 just for inserting the folded edges 3c and 4c. For this reason, it is possible to reduce the man-hours for processing the aggregate 2 and realize a cheaper entrance door 1a.

  In the said embodiment, the folding | returning edge part 3c of the inner surface material 3 and the outer surface material 4 is provided only in the site | part provided with the hole 2d in which the main-body part 5a of the lock 5 for locking the entrance door 1a is inserted, Although the example which inserts 4c was demonstrated, it does not restrict to this. For example, folding edge portions 3c and 4c are formed at appropriate positions in the peripheral edge portions of the inner surface material 3 and the outer surface material 4, and the folding edge portions 3c and 4c are formed on the aggregate 2 in accordance with the positions of the folding edge portions 3c and 4c. A gap such as a slit may be formed as an insertion portion into which a screw is inserted, and a structure that does not use screws or rivets may be used.

  In this case, the lock reinforcing member 6 does not exist between the folded edge 3c of the inner surface material 3 and the folded edge 4c of the outer surface material 4, but the folded surface 3e of the inner surface material 3 and the outer surface material 4 are formed so as to face each other and at least one of the folding surfaces 3e and 4e is provided with the thermally expandable graphite 10, the heated thermally expandable graphite 10 is opposed to the facing folded surface 3e. Since the foam expands toward the 4e side, the folded edge portion 3c of the inner surface material 3 and the folded edge portion 4c of the outer surface material 4 are pressed in a direction away from each other by the foamed thermally expandable graphite 10. For this reason, it is possible to prevent the inner surface material 3 and the outer surface material 4 from separating from the aggregate 2.

  Moreover, the insertion part into which the folding | returning edge part 3c, 4c is inserted may be a recessed part provided in the outer peripheral part of a door frame, and being depressed in the inner peripheral side. In this case, when the entrance door is heated, the heating foam material provided at the folded edge inserted into the recess is foamed between the inner wall portion forming the recess and the foamed heating foam material is used. It is possible to prevent the folded edge from being pressed and bent up.

  In the above embodiment, the folded edge portion 3 c of the inner surface material 3 is folded substantially parallel to the inner surface material 3, and the folded edge portion 4 c of the outer surface material 4 is folded substantially parallel to the outer surface material 4. However, the present invention is not limited to this. For example, even if the folded edge portion 3 c of the inner surface material 3 is folded so as to be inclined with respect to the inner surface material 3 and the folded edge portion 4 c of the outer surface material 4 is inclined with respect to the outer surface material 4, It does not matter as long as the folded surface 3e of the surface material 3 faces the outer surface material 4 side and the folded surface 4e of the outer surface material 4 faces the inner surface material 3 side.

In the said embodiment, although the fire door was made into the entrance door 1a, it is not restricted to this, The metal door frame which surrounds four circumferences, such as a door attached to places other than an entrance, and a sliding door, and a metal inner surface material And a fire door provided with an outer surface material.
In the above embodiment, the heat-expandable graphite is the heat-expandable graphite 10, but it is not limited to the heat-expandable graphite as long as it is a refractory material that expands when heated.

  Moreover, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof.

1 joinery, 1a entrance door, 1b opening frame, 1c opening, 2 aggregate, 2c prospective surface,
2d hole, 3 inner surface material, 3b bent edge, 3c folded edge, 3e folded surface,
4 Outer surface material, 4b Folded edge, 4c Folded edge, 4e Folded surface, 5 tablets,
5b dead bolt, 6 lock reinforcing member, 10 heat-expandable graphite

Claims (4)

An opening frame forming an opening;
A pair of metal surface materials facing each other, and
A metal door frame provided between the pair of surface materials, and a door body supported by the opening frame so that the opening can be opened and closed;
With
Each of the pair of surface materials has a folded edge portion in which the edge portion is folded back to the back surface side to form a folded surface facing the other surface material side.
The door frame includes an insertion portion in which the folded edge portion is inserted inside the door frame,
The fitting is characterized in that at least one of the folded edge portions of each of the pair of surface materials is provided with a heating foam material that is heated and foamed on the folded surface. The joinery according to claim 1,
A lock for locking the door body;
The fitting is characterized in that the insertion portion is a hole in which the lock is mounted. The joinery according to claim 2,
The fitting is characterized in that the lock is disposed between the folded surfaces of the pair of surface materials. A fitting according to any one of claims 1 to 3,
The heating foam is provided on the folded surface of each surface material, respectively.