JP2013091916A - Fire door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain reliability of a fire spread prevention effect over a long period of time.SOLUTION: In a fire door 20 where a structural material 60 is provided between a pair of surface materials 21 facing each other and a fire spread prevention material 50 having thermal expansibility is disposed on the depth surface of the structural material 60 facing an opening frame 10 to secure flame shielding performance between the structural material 60 and the opening frame 10 when the fire spread prevention material 50 is thermally expanded, the edges of the pair of surface materials 21 are bent in directions approaching them to each other to form holding pieces 22 facing the depth surface of the structural material 60, and both side edges of the fire spread prevention material 50 are disposed between the holding pieces 22 and the depth surface of the structural material 60.

Description

  The present invention relates to a fire door that functions to prevent the spread of fire when a fire occurs in a building to which the invention is applied.

  Some doors provided on walls that divide the interior of a building are called fire doors. The fire door is a continuous fire-extinguishing material with thermal expansion on the prospective surface of the ridge facing the opening frame, and when it is heated in the event of a fire, Expands and closes the gap with the opening frame, and functions to prevent the flame from moving to the next room (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2004-19186

  In order to dispose the fire spread prevention material, a double-sided tape or a screw is generally used. However, for fire doors with fire spread prevention materials fixed with double-sided tape or screws, even if the adhesive area or the number of screws is increased, if external force is applied, such as foreign matter coming into contact or rubbing, fire spread prevention There is a risk of the edges of the material rolling up. As a result, depending on the period of use, there is a risk that the fire spread prevention material may fall off from the structural material or be damaged, which is not necessarily preferable for ensuring the reliability of the fire spread prevention effect.

  An object of this invention is to provide the fire door which can maintain the reliability of the fire spread prevention effect over a long period of time in view of the said situation.

  In order to achieve the above object, the fire door according to the present invention includes a structural material between a pair of facing materials facing each other, and a fire spread prevention material having heat expansion properties is disposed on the prospective surface of the structural material. In the fire door that is configured to ensure flameproofing between the facing member facing the prospective surface of the structural material when the fire spread preventing material is heated and expanded, the edges of the pair of surface materials are A sandwiching piece portion that faces the prospective surface of the structural material by bending in a direction close to each other is formed, and both side edges of the fire spread prevention material are disposed between the sandwiching piece portion and the prospective surface of the structural material. It is characterized by that.

  According to this invention, the both-sides edge part of a fire spread prevention material will be covered by the clamping piece part which continues from a surface material.

  Further, the present invention provides the fire door as described above, wherein the fire spread prevention material is disposed on the structural material facing the prospective surface of the opening frame, and has a flame shielding property between the structural material and the opening frame when heated and expanded. It is characterized by ensuring.

  According to the present invention, it is possible to prevent a situation where the fire spreads from the gap between the fire door and the opening frame.

  Further, the present invention provides the fire door as described above, wherein the pair of surface materials includes a daylighting window hole whose inner part is surrounded by a structural material, and a translucent panel that covers the window hole. The fire spread prevention material is disposed on the prospective surface of the structural material constituting the window hole, and has a flame shielding property between the structural material and the translucent panel when heated and expanded. It is characterized by securing.

  According to the present invention, it is possible to prevent a situation where the fire spreads from around the daylighting window hole.

  According to the present invention, both side edges of the fire spread prevention material will be covered by the sandwiching piece part continuous from the surface material, so that the edge part will not squeeze even when foreign matter comes into contact with or rubs, Even if the period of use increases, there is no risk of the fire spread prevention material falling off or causing damage. As a result, the reliability of the fire spread prevention effect can be maintained over a long period of time. In addition, since the sandwiching piece is formed integrally with the surface material, the number of parts does not increase and the number of mounting steps does not increase, and the manufacturing cost does not increase significantly due to the application of the present invention. .

FIG. 1 is a longitudinal sectional view of a joinery to which a fire door according to an embodiment of the present invention is applied. FIG. 2 is a cross-sectional view of a joinery to which the fire door shown in FIG. 1 is applied. FIG. 3 is a conceptual diagram of a joinery to which the fire door shown in FIG. 1 is applied. 4 is a cross-sectional view taken along line VV in FIG. FIG. 5A is an exploded perspective view illustrating a main part of the fire door shown in FIG. 1. FIG. 5-2 is a perspective view showing a main part of the fire door shown in FIG.

  Hereinafter, preferred embodiments of a fire door according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG.1 and FIG.2 shows the fitting which applies the fire door which is embodiment of this invention. The joinery illustrated here is provided, for example, on a partition wall that partitions the inside of a building, and includes an opening frame (opposing member) 10 and a fire door 20 as shown in FIG.

  The opening frame 10 is configured as a rectangular frame by four-frames an upper frame 11, a lower frame 12, and a pair of left and right vertical frames 13. The fire door 20 is configured by disposing a surface material 21 on each of the front and back surfaces of the cage 120. The gutter 120 has a rectangular frame shape formed by assembling an upper gutter 121, a lower gutter 122, and a pair of left and right vertical gutters 123 around the circumference, and is configured to have a size that can close the opening frame 10. It is. A pair of uprights 124 and a pair of blanks 125 are provided inside the rod 120, and a window hole 126 for lighting is formed between the verticals 124 and the blanks 125. Inside the window hole 126, a glass panel (translucent panel) 41 is disposed via a glass frame (opposing member) 40. The fire door 20 is connected between one vertical rod 123 and one vertical frame 13 of the opening frame 10 by a pair of upper and lower hinges 15 and rotates about the axis of the hinge 15 along the vertical axis. Thus, the opening frame 10 can be opened and closed.

  As shown in FIGS. 1 and 2, the fire door 20 described above has a fire spread prevention material on each prospective surface facing the opening frame 10 in the upper rod 121, the lower rod 122 and the pair of vertical rods 123 constituting the rod 120. 50, and as shown in FIG. 4 representatively, the fire spread prevention material 50 is provided on the prospective surfaces facing the glass frame 40 in the vertical 124 and the seamless 125 constituting the window hole 126, respectively. . The fire spread prevention material 50 is, for example, a synthetic resin band-shaped member kneaded with expandable graphite, and is formed to have a width smaller than the dimension along the prospective direction of the fire door 20. About the upper frame 11, the lower frame 12, and a pair of vertical frame 13, the fire spread prevention material 50 is arrange | positioned so that it may continue over the perimeter in the position used as the approximate center of each prospective direction. As for the vertical 124 and the seamless 125, the fire spread prevention material 50 is disposed so as to be continuous over the entire circumference at a position that is substantially in the center of each prospective direction. Although not clearly shown in the figure, an upper flame 121, a lower rod 122, a vertical rod 123, a vertical 124, an invisible 125 (hereinafter collectively referred to as “structural material 60”) and a fire spread prevention material. It is preferable to adhere to 50 with an adhesive or a double-sided tape.

  As shown in FIGS. 5A and 5B, the structural material 60 provided with the fire spread prevention material 50 is provided with a base portion 61, and both side edges are covered by the sandwiching piece portions 22. It is.

  The trapezoidal portion 61 is a portion that protrudes toward the opening frame 10 and the glass frame 40 from the portions that are on both sides of the fire spread prevention material 50, and is formed integrally with the structural material 60. Although not clearly shown in the drawing, a plurality of the trapezoidal portions 61 are provided along the longitudinal direction of the fire spread prevention material 50. The protruding height of the base 61 is set to be slightly smaller than the thickness of the fire spread prevention material 50. In addition, each of the base portions 61 is formed with a slot 61 a extending along the longitudinal direction of the fire spread prevention material 50.

  The sandwiching piece portion 22 is formed by bending the edge portions of the surface material 21 in directions close to each other. As shown in FIGS. 1, 2, and 4, the trapezoidal portion 61 and the fire spread of the structural material 60 are formed. It arrange | positions in the state which covers the both-sides edge part of the prevention material 50. FIG. A space for exposing the fire spread prevention material 50 to the outside is secured between the sandwiching piece portions 22. As shown in FIG. 5A, the sandwiching piece portion 22 has a rivet mounting hole 22 a at a portion facing the groove hole 61 a of the base portion 61, and FIGS. 1, 2, 4, and 5. As shown in FIG. 2, the structural member 60 is connected to each other by riveting through the individual rivet mounting holes 22a and the groove holes 61a.

  According to the joinery configured as described above, since both side edges of the fire spread prevention material 50 disposed on the prospective surface of the structural material 60 are covered by the sandwiching piece portion 22, foreign matter contacts or is rubbed. In addition, the edge portion does not squeeze out, and even if the period of use increases, there is no possibility that the fire spread prevention material 50 will fall off or be damaged. Therefore, when the fire door 20 is heated in the event of a fire, the fire spread material 50 that has been heated and expanded swells from between the sandwiching piece portions 22 and comes into contact with the opening frame 10 and the glass frame 40, and the fire door 20. And the gap between the opening frame 10 and the gap between the window hole 126 and the glass frame 40 are surely closed over the entire circumference without any breaks. Thereby, it is possible to more reliably prevent the spread of fire and maintain the reliability of the effect of preventing the spread of fire over a long period of time.

  And since the clamping piece part 22 is shape | molded integrally with the surface material 21, the number of parts does not increase, an attachment man-hour does not increase, and the situation where the manufacturing cost of joinery increases remarkably is not caused.

  In the above-described embodiment, the joinery having the daylighting window hole 126 in the fire door 20 is illustrated, but the fire door 20 does not necessarily have the window hole 126.

  In the above-described embodiment, the sandwiching piece 22 is riveted to the structural member 60. However, the sandwiching piece 22 does not necessarily need to be riveted, and the sandwiching piece 22 covers both side edges of the fire spread prevention member 50. It is enough. In this case, it is not necessary to provide the base portion 61 and the groove 61a in the structural member 60.

DESCRIPTION OF SYMBOLS 10 Opening frame 20 Fire prevention door 21 Surface material 22 Clamping piece part 50 Fire spread prevention material 60 Structural material 121 Upper eaves 122 Lower eaves 123 Vertical eaves 124 Vertical 125 Seamless 126 Window hole

Claims (3)

A structure material is provided between a pair of surface materials facing each other, and a fire spread prevention material having heat expansion property is disposed on the prospective surface of the structure material, and the structure is formed when the fire spread prevention material is heated and expanded. In a fire door that ensures flame shielding between the facing member facing the prospective surface of the material,
Bending piece portions that oppose the prospective surface of the structural material are formed by bending the edge portions of the pair of surface materials in directions close to each other, and both side edge portions of the fire spread prevention material are arranged between the holding piece portion and the structure. A fire door characterized by being placed between the prospective surface of the material.   The flame spread prevention material is disposed on a structural material facing a prospective surface of the opening frame, and ensures flame shielding properties between the structural material and the opening frame when heated and expanded. Fire door as described. The pair of surface materials is provided with a light-transmitting window hole that is surrounded by a structural material on the inner side of the four sides, and a light-transmitting panel that covers the window hole,
The fire spread prevention material is disposed on the prospective surface of the structural material constituting the window hole, and ensures a flame shielding property between the structural material and the translucent panel when heated and expanded. The fire door according to claim 1.

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