JP2021063400A - Fire protection structure of stile-and-rail door - Google Patents

Abstract

To prevent fire from escaping in the event of a fire in a stile-and-rail door equipped with a lock, and to improve fire protection and flame shielding performance.SOLUTION: In a stile-and-rail door 10, in which a mirror plate 15 is fixed inside a frame made up of vertical stiles 11, 12 and horizontal rails 13, 14, a thermal expansion material 24 is provided from a bottom 21a of a lock body housing hole 21 that opens towards a prospective surface of the vertical frame to an inner surface 23a of a through hole 23 that penetrates the front and back of the vertical stile, and further thermal expansion materials 25, 26 are provided on a top surface 23b and an outer surface 23c of the through hole, respectively. These thermal expansion materials expand when heated during a fire, blocking gaps that allow flames and smoke to pass through, and slowing down the spread of fire, thereby providing effects of improving fire protection and flame shielding performance.SELECTED DRAWING: Figure 2

Description

The present invention relates to a fireproof structure for a framed door.

In a framed door in which a mirror plate is fixed inside a frame composed of a vertical frame and a horizontal frame, a machined hole for attaching a lock, a handle, etc. is formed in one of the vertical frames (Patent Document 1 "Hole processing". 17 ”).

Japanese Unexamined Patent Publication No. 9-41825 (paragraph 0009, FIG. 1)

In the framed door, the end plate fitting groove for fitting the peripheral edge of the end plate is formed so as to circulate around each inner surface of the vertical frame and the horizontal frame. Therefore, the end plate fitting groove formed on the inner surface of the vertical frame. And the machined hole are relatively close to each other. For this reason, if a fire invades the end plate fitting groove at the time of a fire, it immediately invades the machined hole, and there is a problem that the fire easily burns out through the machined hole.

Therefore, the problem to be solved by the present invention is to prevent the fire from burning through in the case of a fire in the framed door to which the lock is attached, and to improve the fireproof performance or the flameproof performance.

In order to solve this problem, in the present invention according to claim 1, in a framed door in which a mirror plate is fixed in a frame composed of a vertical frame and a horizontal frame, a lock body accommodating hole that opens in the prospective surface of the vertical frame is provided. It is a fireproof structure of a framed door, which is formed and is characterized in that a thermal expansion material is provided at the bottom of the lock body accommodating hole.

The stile according to claim 1, wherein through holes penetrating the front and back surfaces of the vertical stile are formed, and a thermal expansion material is provided on at least a part of the inner surface of the through holes. It is a fireproof structure for assembled doors.

According to the first aspect of the present invention, the thermal expansion material provided at the bottom of the main body accommodating hole expands when heated in the event of a fire, closes a gap serving as a path for flames and smoke, and circulates around the fire. It has the effect of slowing down and improving fire prevention performance or flame insulation performance. That is, when the end plate on the indoor side where the fire broke out receives heat and becomes thin, and a gap is generated in the portion to be assembled with the vertical stile, the end plate fitting groove and the lock body accommodating hole pass through the gap. If the thin part between them is easily ignited and this part burns out and the inside of the lock body storage hole is ignited, the vertical stile will burn out. However, according to the first aspect of the present invention, since the thermal expansion material is provided at the portion corresponding to this portion (that is, the bottom of the lock body accommodating hole), the thermal expansion material is thermally expanded in the event of a fire, and flames and smoke are emitted. It is possible to prevent the inside of the lock body accommodating hole from entering and prevent the vertical stile from burning through.

According to the second aspect of the present invention, since the thermal expansion material is provided on at least a part of the inner surface of the through hole, the rotation of the fire in the event of a fire is further slowed down, and the fire prevention performance or the flame insulation performance is further improved. It has the effect of greatly improving. That is, the vertical stile on the indoor side where the fire broke out receives heat and becomes thin, or the metal seat that is attached to the front and back of the through hole is deformed or melted by the heat, so that the surface and seat of the vertical stile A gap is generated between the two, and a fire enters the inside of the through hole through this gap, and the fire burns to the opposite side through the gap generated by deforming or melting the seat on the opposite side. However, according to the second aspect of the present invention, since the thermal expansion material is provided on at least a part of the inner surface of the through hole, even if a fire enters the inside of the through hole through the gap, the thermal expansion material is provided. It expands thermally and plays a role of blocking the passage of fire and smoke, and can prevent burning through to the other side.

It is a front view of the framed door by one Embodiment (Example 1) of this invention. It is an enlarged view of part X of FIG. FIG. 2 is an enlarged view of part X showing a state in which the case lock is removed from FIG. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 2 is a cross-sectional view taken along the line BB of FIG. FIG. 2 is a cross-sectional view taken along the line CC of FIG. FIG. 5 is a sectional view taken along the line AA similar to FIG. 4 showing a framed door according to another embodiment of the present invention (Example 2). It is a BB sectional view similar to FIG. 5 of this framed door.

The present invention will be described below with reference to examples.

The framed door 10 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 6. The frame door 10 has a mirror plate 15 fixed in a frame composed of left and right vertical frames 11 and 12 and upper and lower horizontal frames 13 and 14, and an electronic lock 16 is attached to the vertical frame 11. The electronic lock 16 has various types such as a remote control card type, a password type, a fingerprint authentication type, and a touch key type, but since there is no keyhole required for the conventional cylinder lock, it is not picked. Not only is it convenient, but it is also highly crime-preventive, and in recent years it has become widespread in wooden doors such as framed doors.

The electronic lock 16 used in this embodiment includes a relatively thin box-shaped lock body 17 having a built-in mechanical portion, seats 18 and 18 covering both the front and back surfaces of the lock body 17, and one side surface of the lock body 17. It is configured to have a front plate 19 for covering the door, and handles 20 and 20 for opening and closing the door by operating when the lock is unlocked. The seat 18 has a height dimension that completely covers the front and back surfaces of the lock body 17 in the height direction and also covers the through hole 23 described later, and the handle 20 is rotatably attached below the seat 18. .. The front plate 19 has a height dimension that completely covers the side surface of the lock body 17 in the height direction and further extends vertically.

The vertical stile 11 on which the electronic lock 16 is mounted is formed with a lock body accommodating hole 21 excavated inward from the prospective surface 11a and a front plate accommodating portion 22 formed on the prospective surface thereof. .. The lock body accommodating hole 21 has substantially the same shape and dimensions as the lock body 17, and the front plate accommodating portion 22 has substantially the same shape and dimensions as the front plate 19. For the electronic lock, the lock body 17 with the front plate 19 attached is inserted into the lock body accommodating hole 21 of the vertical frame 11 from the side opposite to the front plate mounting surface, and the front plate 19 is accommodated in the front plate accommodating portion 22. And it is placed in a predetermined position. After that, the seats 18 and 18 are attached to the front and back of the door 10, and the handles 20 and 20 are attached to the handle rotation shaft (not shown) protruding from the holes (not shown) formed in the seats 18 and 18. , The electronic lock 16 is attached to the vertical frame 11.

Since a cable (not shown) for electronically controlling the electronic lock 16 is connected to the electronic lock 16, a through hole 23 for passing this cable is provided in the vertical stile 11 above the lock body accommodating hole 21. It is formed so as to penetrate the front and back. The through hole 23 has a substantially rectangular cross-sectional shape, the lower portion thereof communicates with the upper portion of the lock body accommodating hole 21, and the upper surface 23b thereof is located above the upper surface of the lock body accommodating hole 21. The side surface 23a is substantially flush with the bottom portion 21a of the lock body accommodating hole 21, and the outer surface 23c crosses the lock body accommodating hole 21 at a position not reaching the prospective surface 11a of the vertical frame 11. The through hole 23 penetrates the front and back of the vertical frame 11, but in the state where the electronic lock 16 is attached as described above, the opening is closed by the seats 18 and 18.

In the above configuration, the thermal expansion material 24 is attached to the bottom portion 21a of the lock body accommodating hole 21. The thermal expansion material 24 is further extended upward and is also attached to the inner side surface 23a of the through hole 23. Further, the thermal expansion materials 25 and 26 are also attached to the upper surface 23b and the outer surface 23c of the through hole 23, respectively. These heat-expanding materials 24, 25, and 26 have physical properties that expand when they receive heat during a fire to prevent the passage of flames and smoke. For example, synthetic resins smelted with heat-expandable graphite. Etc. are preferably used.

In this embodiment, one thermal expansion material 24 is continuously attached to the bottom portion 21a of the lock body accommodating hole 21 and the inner side surface 23a of the through hole 23, but the lock body accommodating hole 21 is used. Separate thermal expansion materials may be used for the thermal expansion material attached to the bottom portion 21a and the thermal expansion material attached to the inner side surface 23a of the through hole 23. Further, in this embodiment, different thermal expansion materials 25 and 26 are attached to each surface of the through hole 23, but one thermal expansion material may be used over a plurality of adjacent surfaces, and thermal expansion may be performed. The materials 24, 25, and 26 may be attached as a single thermal expansion material in a bent state on each surface.

These thermal expansion materials 24, 25, and 26 expand by being heated in the event of a fire to close the gaps that serve as paths for flames and smoke, and to slow down the rotation of the fire. More specifically, for example, when a fire breaks out in the upper indoor space separated by the door 10 in FIGS. 4 and 5, the end plate 15 becomes thin due to the heat, and the portion to be assembled with the vertical stile 11 is formed. When a gap is generated (between the end plate fitting groove 27 on the inner surface of the vertical frame 11 and the peripheral edge of the end plate 15), the end plate fitting groove 27 and the lock body accommodating hole 21 and the through hole 23 pass through the gap. The thin part 28 between them is easy to catch fire. If this portion 28 is burnt and a fire circulates inside the lock body accommodating hole 21 and the through hole 23, the vertical stile 11 burns out. However, according to this embodiment, since the thermal expansion material 24 is provided at the portion corresponding to this portion 28 (the bottom portion 21a of the lock body accommodating hole 21 and the inner side surface 23a of the through hole 23), thermal expansion occurs in the event of a fire. Therefore, it is possible to prevent flames and smoke from entering the inside of the lock body accommodating hole 21 and the through hole 23, and prevent the vertical stile 11 from burning through.

Further, when a fire breaks out in the indoor space on the left side separated by the door 10 in FIG. 6, the vertical stile 11 becomes thin due to the heat, or the metal seat 18 is deformed or melted by the heat, so that the vertical frame 11 is vertically formed. A gap is generated between the surface of the stile 11 and the seat 18 (indicated by reference numeral 29 in FIG. 6), and a fire enters the inside of the through hole 23 through this gap to deform or melt the seat 18 on the opposite side. The fire burns out to the other side through the gap that was generated. However, in this embodiment, the thermal expansion material 24 is provided on the bottom portion 21a of the lock body accommodating hole 21 and the inner side surface 23a of the through hole 23, and the thermal expansion material 25 is also provided on the upper surface 23b of the through hole 23. Therefore, even if a fire enters the inside of the through hole 23 through the gap generated in the portion 29, these thermal expansion materials 24, 25, and 26 thermally expand and play a role of blocking the passage of fire and smoke, which is the opposite. It is possible to prevent burning out to the side.

The assembled door 10A according to another embodiment of the present invention (Example 2) is shown in FIGS. 7 (AA cross-sectional view) and 8 (BB cross-sectional view). The assembly door 10A is different from the assembly door 10 of the first embodiment in that the end plate 15 is fitted to the vertical stile 11, and the inner surface of the vertical stile 11 is added to the convex portions 30 and 31 on the front and back surfaces. It has a substantially E-shaped cross section with a small convex portion 32 formed substantially in the center of the thickness direction, and the convex portions 34, on both sides of the concave portion 33 substantially in the center of the thickness direction are sandwiched between the left and right edges of the end plate 15. 35 is formed, the convex portions 34, 35 of the end plate 15 are fitted into the concave portions (unsigned) between the front and back convex portions 30, 31 of the vertical stile 11 and the small convex portions 32, and the vertical stiles 11, 12 are formed. The convex portion 32 of the above is fitted into the concave portion 33 of the end plate 15. The same applies to the configuration in which the end plate 15 is fitted to the vertical stile 12 and the horizontal stiles 13 and 14 (not shown).

Other configurations are the same as those of the assembly door 10 of the first embodiment, and by providing the thermal expansion members 24, 25, 26, it is possible to prevent burnout in the event of a fire and improve the fire prevention performance or the flame insulation performance. The same can be done. According to the assembly door 10A of this embodiment, in addition to this, in the fitting portion between the end plate 15 and the vertical stiles 11, 12 / horizontal stiles 13, 14 in the event of a fire, the vertical stiles 11, 12 / horizontal stiles 13, Even if one of the convex portions (for example, the convex portion 34) of the 14 is burnt and the left and right end ends of the end plate 15 are exposed to the flame, the convex portion 32 is fitted into the concave portion 33 of the end plate 15, so that the path of the flame is passed. Therefore, it is possible to delay the burning of the fitting portion and prevent the flame from passing through the gap around the end plate 15. Therefore, due to these synergistic effects, the fireproof performance or the flameproof performance can be further improved.

Although the present invention has been described in detail with reference to examples, the present invention is not limited to these, and can be variously modified or modified within the scope of the invention described in the claims. Is.

10 Framed doors 11, 12 Vertical frames 13, 14 Horizontal frames 15 End plate 16 Electronic lock 17 Lock body 18 Seat 19 Front plate 20 Handle 21 Lock body storage hole 21a Bottom 22 Front plate housing 23 Through hole 23a Inner side surface 23b Top surface 23c Outer side surface 24 Thermal expansion material 25 Thermal expansion material 26 Thermal expansion material 27 End plate fitting groove 28 Part where fire is likely to turn in the event of a fire 29 Part where a gap is likely to occur in the event of a fire 30, 31 Convex part on the inner surface of the vertical stile 32 Small convex part 33 Concave in the center of the left and right edges of the end plate 34,35 Convex on both sides of the concave part on the left and right edges of the end plate

Claims (2)

In a framed door in which a mirror plate is fixed inside a frame consisting of a vertical frame and a horizontal frame, a lock body accommodating hole is formed to open on the prospective surface of the vertical frame, and a thermal expansion material is provided at the bottom of the lock body accommodating hole. Fireproof structure of the framed door, which is characterized by being able to be used. The fireproof structure for a framed door according to claim 1, wherein through holes penetrating the front and back of the vertical frame are formed, and a thermal expansion material is provided on at least a part of the inner surface of the through holes.

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