JP6967565B2 - Fire door - Google Patents

Description

The present invention relates to a fire door installed in a building.

Conventionally, fire doors installed in buildings such as commercial facilities and hospitals have been known. The fire door described in Patent Document 1, which is an example thereof, has a fixed wall fixed to the frontage, a door moving with respect to the fixed wall, a drive unit for driving the door, a transom light accommodating the drive unit, and a transom light. It is provided with a pair of vertical frames that support the transom by being connected to the transom.

Japanese Unexamined Patent Publication No. 8-284544

By the way, in the conventional fire door, when the door is a sliding door of a sliding type, a gap is formed in the combined portion of the two sliding doors, and when the door is a sliding door of a single pulling type, a gap is formed between the sliding door and the vertical frame. Is formed. These gaps are gaps between the two sliding doors or due to the rubber door stop provided to cushion the impact between the sliding doors and the vertical frame, and the opening above the gap communicates with the inside of the transom light. .. Therefore, when a fire breaks out around a fire door installed in a building, hot air may enter the transom light through these gaps.

On the other hand, the hot air may pass through the gap between the mating portions of the two sliding doors and the gap between the sliding door and the vertical frame to the side not exposed to the flame. In this case, the temperature of the hot air drops sharply when it comes into contact with low-temperature air that has not been exposed to the flame, so even if the hot air whose temperature has dropped enters the inside of the transom light, the temperature inside the transom light becomes excessive. The rise is suppressed. In addition, when hot air rises in the combined portion of the two sliding doors or in the gap between the sliding door and the vertical frame, the hot air is not exposed to the flame and is transom light through the opening above the gap without being exposed to the outside air. Get inside. Therefore, hot air maintained at a high temperature may enter the transom light.

Further, as a conventional fire door, an automatic opening / closing type fire door in which a door is driven by a drive unit is provided with a sensor for detecting at least one of a moving body and a stationary body around the door, and based on the detection result of the sensor. The drive unit controls the opening and closing operation of the door. The wiring of the sensor is drawn into the transom light through, for example, a wiring hole formed in the transom light. Therefore, when a fire breaks out around the fire door, hot air may enter the transom light through the wiring hole. In addition to the wiring of the sensor, the same problem occurs when the wiring of the signal line, the communication line, etc. connected to the drive unit is drawn into the transom light through the wiring hole.

In this way, the fire door has an air passage that communicates the space on the side exposed to the flame with the transom light interior, so when a fire breaks out around the fire door, the hot air will pass through the air passage. There is a risk of getting inside the transom light through. Regarding the problem related to the wiring hole, it is considered that the same problem occurs not only in the sliding door but also in the fire door having an open door or a folding door.

Therefore, an object of the present invention is to provide a fire door in which hot air having an excessively high temperature does not easily enter the transom light.

[1] The fire door according to one embodiment of the present invention includes a door, a drive unit for driving the door, an accommodation unit arranged above the door and accommodating the drive unit and the upper end portion of the door, and the above. A foam material is provided, wherein the upper end portion of the door is arranged in the vicinity of the gap formed inside the housing portion and expands by heating to cover at least a part of the gap.
[2] According to one form subordinate to the fire door, the foaming material is provided at the upper end of the door tip of the door.
[3] According to one form subordinate to the fire door, the door is a draw door including a first door and a second door, and the foam material is applied to both the first door and the second door. It will be provided.
[4] According to one form dependent on the fire door, a regulating member provided in the vicinity of the gap facing the gap and restricting the expansion of the foam material is further provided.
[5] According to one form subordinate to the fire door, the foaming material is provided on the regulating member.
[6] According to one form subordinate to the fire door, a door-side smoke return piece including a horizontally extending upper horizontal piece and a lower vertical piece extending downward from the edge of the upper horizontal piece, and a door-side smoke return piece more than the upper horizontal piece. Smoke having a lower horizontal piece provided on the lower side and extending horizontally and a blind side smoke return piece including the lower vertical piece extending upward from the edge of the lower horizontal piece and the upper vertical piece facing in the front-rear direction. The foam material is provided between the door-side smoke return piece and the blind-side smoke return piece.
[1] A fire door according to another aspect of the invention has a door, a drive unit for driving the door, and a storage space for accommodating the drive unit, and has a transom light arranged above the door. A foam material that expands by being heated and closes the opening on the side communicating with the accommodation space in the air passage communicating with the accommodation space, and a regulating member provided so as to face the opening at a distance. And prepare.

According to this configuration, when a fire breaks out around the fire door, the foam material is heated and expands, so that the opening of the air passage communicating with the accommodation space is closed. Therefore, it is possible to prevent hot air having an excessively high temperature from entering the accommodation space. In addition, when the foam material expands, the regulating member receives the foam material, thereby restricting the expansion of the foam material at the portion facing the opening. As a result, the density of the portion of the foam material facing the opening becomes higher than the density of the other portion of the foam material, so that it is possible to prevent hot air from leaking from the foam material to the accommodation space side and entering the accommodation space. Can be done.

[2] According to one form subordinate to the fire door, the door has a first sliding door and a second sliding door which are sliding doors, and the air passage has the first sliding door and the second sliding door. The opening includes a gap formed in the mating portion, the opening is a portion that opens upward in the gap, and the restricting member is arranged above the air passage and with the opening. The foam material is provided so as to face each other at a distance, and the foam material is provided between the mating portion and the restricting member.

According to this configuration, when the foam material is heated and expanded, the opening above the gap between the first sliding door and the second sliding door, which is the opening of the air passage, is closed by the foam material. Therefore, it is possible to prevent the hot air that has entered the gap between the first sliding door and the second sliding door from rising and entering the accommodation space. In addition, in the portion where the opening above the gap between the first sliding door and the second sliding door communicates with the accommodating space, the foam material is blocked by the foam material while the upward expansion of the foam material is restricted by the regulation member. Will be done. For this reason, the density of the foam material increases in the portion where the opening above the gap between the first sliding door and the second sliding door communicates with the accommodation space, so that hot air leaks from the foam material to the accommodation space side and is accommodated. It is possible to suppress entering the space.

[3] According to one form dependent on the fire door, the foaming material includes a first foaming material supported from below by the mating portion on the first sliding door side and the calling on the second sliding door side. It has a second foam material that is supported from below by the mating portion.

According to this configuration, since the foaming material is located on both sides of the opening above the gap between the first sliding door and the second sliding door, which is the opening of the air passage, the opening is opened when the foaming material expands. Is easy to block. Therefore, the density of the foam material that closes the opening is increased, and it is possible to further suppress the hot air from leaking from the foam material to the accommodation space side. In addition, since each foaming material is supported from below by the mating portion, it is possible to prevent each foaming material from peeling off from the mating portion due to its own weight.

[4] According to one form subordinate to the fire door, the combined portion is formed on one of the first sliding door and the second sliding door, and has a convex portion protruding toward the other and the first sliding door. And has a recess formed on the other side of the second sliding door and into which the convex portion can enter, and each of the first foaming material and the second foaming material follows the uneven shape of the combined portion. It has a sliding shape.

According to this configuration, since the foaming material is attached along the uneven shape of the combined portion of the first sliding door and the second sliding door, the combination of the first sliding door and the second sliding door in which the foamed material serves as an opening of the air passage. It can be placed close to the opening above the gap between the portions. Therefore, the foaming material can expand and sufficiently close the opening even with respect to the complicated shape of the opening of the mating portion.

[5] According to one form subordinate to the fire door, the restricting member is such that when the first sliding door and the second sliding door are extended upward due to thermal expansion, the foaming material is combined with the combined portion. It is arranged at a position where the space between the members can be closed.

In order to regulate the expansion of the foam material and increase the density of the foam material, it is preferable that the regulating member is arranged near the foam material. Therefore, it is conceivable that the regulating member is arranged above the mating portion and near the mating portion.
On the other hand, each sliding door extends upward due to thermal expansion. For this reason, if the regulating member is arranged above the mating portion and near the mating portion, the regulating member may interfere with the regulating member when each sliding door extends upward due to thermal expansion, and the regulating member may bend. ..
Under such circumstances, the inventor of the present application has set the regulating member at a position where the regulating member can be arranged close to the combined portion in that state, based on the state in which each sliding door is extended upward due to thermal expansion. Was found to be placed.
Then, by arranging the regulating member as in the configuration of [5], the foaming material that has been heated and expanded is restricted from expanding upward by the regulating member, so that the density of the foaming material that closes the opening is increased. At the same time, it is possible to prevent the regulating member from bending due to the interference between the regulating member and the mating portion.

[6] According to one form subordinate to the fire door, the vertical frame for supporting the transom light is further provided, the door is a one-sided sliding door, and the door end of the sliding door is formed in the vertical frame. The air passage is a gap formed between the door tip of the sliding door and the recess of the vertical frame in the driving direction of the sliding door, and the opening is an opening. The restricting member is formed so as to open toward the upper side of the air passage, the restricting member is arranged at a distance above the opening, and the foam material is the sliding door of the sliding door in a fully closed state. It is provided between the door and the restricting member.

According to this configuration, when the foam material is heated and expanded, the opening above the gap between the door tip of the sliding door, which is the opening of the air passage, and the recess of the vertical frame is closed by the foam material. Therefore, it is possible to prevent the hot air that has entered the gap between the door tip of the sliding door and the recess of the vertical frame from rising and entering the accommodation space. In addition, in the part where the gap between the door tip of the sliding door and the recess of the vertical frame and the accommodation space communicate with each other, the density of the foam material increases due to the regulatory member, so hot air leaks from the foam material to the accommodation space side. It is possible to prevent it from entering the accommodation space.

[7] According to one form subordinate to the fire door, the foam material is supported from below by the door tip of the sliding door.

According to this configuration, since the foaming material is supported from below by the door tip of the sliding door, the foaming material is peeled off from the portion to which the foaming material is attached due to the weight of the foaming material due to the aging deterioration of the foaming material. It can be suppressed.

[8] According to one form subordinate to the fire door, the restricting member can block the space between the sliding door and the restricting member when the sliding door is extended upward due to thermal expansion. It is placed in a suitable position.

According to this configuration, since the regulating member is arranged at a position where the regulating member can be arranged close to the upper part of the sliding door in a state where the sliding door is extended upward due to thermal expansion, the same as the effect of the above [5]. It is possible to increase the density of the foam material that closes the opening, and it is possible to prevent the regulating member from bending due to the interference between the regulating member and the sliding door.

[9] According to one form subordinate to the fire door, the restricting member is from the sliding door at an end adjacent to the vertical frame in the driving direction of the sliding door between the blind and the sliding door. Further includes end-regulating members arranged at intervals above, the end-regulating member is in contact with the vertical frame in the driving direction of the sliding door, and the foam material is the end-regulating member and said. Further includes an end foam material provided between the sliding door and the door end.

For example, when the regulating member is housed in the recess of the vertical frame, the regulating member contributes to increasing the density of the foam material that closes the gap between the recess of the vertical frame and the portion of the sliding door that enters the recess. On the other hand, it does not contribute to increasing the density of the foam material that closes the gap between the portion other than the recess of the vertical frame and the door end of the sliding door. In addition, the foaming material may not be able to close the gap between the portion other than the recess of the vertical frame and the door end of the sliding door.
Therefore, according to the configuration of [9], when the end foaming material is heated and expanded, the gap between the portion other than the recess of the vertical frame and the door end of the sliding door is closed by the end foaming material. Therefore, it is possible to prevent the hot air that has entered the gap between the portion other than the recess of the vertical frame and the door end of the sliding door from rising and entering the accommodation space. In addition, in the part that communicates the gap between the part other than the recess of the vertical frame and the door end of the sliding door and the accommodation space, the end regulating member regulates the upward expansion of the end foaming material. Increases the density of the end foam material. Therefore, it is possible to prevent hot air from leaking from the end foaming material to the accommodation space side and entering the accommodation space.

[10] According to one form subordinate to the fire door, the end foaming material is supported from below by the door tip of the sliding door.

According to this configuration, since the foaming material is supported from below by the door end of the sliding door, it is suppressed that the foam material is peeled off from the door end of the sliding door due to its own weight.

[11] According to one form dependent on the fire door, the end regulating member has the end foaming material of the sliding door and the end regulating member when the sliding door is extended upward due to thermal expansion. It is placed in a position where the space between them can be closed.

According to this configuration, the end restricting member is arranged at a position where the end restricting member can be arranged close to the upper part of the sliding door in a state where the sliding door is extended upward due to thermal expansion. Similar to the effect, the density of the end foam material that closes the opening can be increased, and the end regulation member can be prevented from bending due to the interference between the end regulation member and the sliding door.

[12] According to one form subordinate to the fire door, the air passage between the door and the blind is provided with a smoke return, and the smoke return is provided on the door and horizontally. A door-side smoke return piece including an extending upper horizontal piece and a lower vertical piece extending downward from the edge of the upper horizontal piece, and a lower horizontal piece provided below the upper horizontal piece in the blind and extending horizontally. And having an eyeless smoke return piece extending upward from the edge of the lower horizontal piece and including an upper vertical piece facing the lower vertical piece in the anteroposterior direction, the opening is said to contain the smoke return. An outer foam material is provided between the door-side smoke return piece and the blind-side smoke return piece, which is an opening on the space side, and the foam material is more said than the smoke return piece in the air passage. The inner foam material is provided on the accommodation space side and is provided between the door and the eyeless, and the restricting member is provided above the inner foam material in the eyeless and the inner foam material. Includes inner regulatory members facing the door.

According to this configuration, for example, in the early stage of a fire, when the outer foam material is heated and expanded to close the gap in the part of the air passage away from the transom light, and then the door expands upward due to thermal expansion. The inner foam material is heated and expanded to close the gap in the air passage near the transom light. As described above, since the air passage can be blocked by the foam material at two points in the air passage communicating with the accommodation space, it is possible to further suppress the hot air that has entered the air passage from entering the accommodation space.

[13] According to one embodiment dependent on the fire door, the outer foam material is supported from below by the lower horizontal piece of the transom side smoke return piece, and the inner foam material is the door side smoke. It is supported from below by the upper horizontal piece of the return piece.

According to this configuration, the outer foam material is supported from below by the lower horizontal piece, and the inner foam material is supported from below by the upper horizontal piece, so that each foam material is prevented from peeling from the smoke return due to its own weight. be able to.

[14] According to one form subordinate to the fire door, a wiring hole through which the wiring connected to the drive unit passes is formed in the blind, and the air passage includes the wiring hole. The opening is an opening of the wiring hole, the restricting member is provided so as to face the wiring hole at a distance from the wiring hole, and the foam material is provided with the wiring hole and the restricting member. It is provided between.

According to this configuration, when the foaming material is heated, the regulating member regulates the expansion of the foaming material to the side opposite to the wiring hole side, so that the foaming material expands toward the wiring hole. It will be easier. Therefore, the foaming material easily closes the wiring hole.

[15] According to one form dependent on the fire door, the restricting member is arranged in the transom light accommodating space, and the foaming material is attached to the surface of the restricting member on the side of the wiring hole. Be done.

According to this configuration, since the foam material suppresses the hot air from the wiring hole from entering the regulating member side, the hot air is suppressed from directly hitting the regulating member.

[16] According to one form dependent on the fire door, the foam material has an area facing the wiring hole and having an area equal to or larger than the opening area of the wiring hole.

For example, when the foam material is formed in an annular shape surrounding the wiring hole, the foam material does not expand to the center of the ring when the foam material is heated, or even if the foam material expands to the center of the ring, it is used for wiring. The density of the foam in the center of the ring facing the hole may be low. Further, if the area of the foam material facing the wiring hole is smaller than the opening area of the wiring hole, the foam material may not sufficiently close the wiring hole.
In that respect, according to the configuration of [16], when the foaming material is heated and expanded, the foaming material faces the wiring hole and therefore expands toward the wiring hole. In addition, since the area of the foam material is larger than the wiring hole, the wiring hole can be sufficiently closed.

[17] According to one form subordinate to the fire door, the transom further includes an opening / closing cover that opens / closes the accommodation space, and the regulating member supports the opening / closing cover.

According to this configuration, the number of parts of the fire door can be reduced as compared with the configuration in which the support member supporting the opening / closing cover is formed separately from the regulation member.

[18] According to one form subordinate to the fire door, the transom is connected to the vertical frame by a bolt, and the restricting member is sandwiched between the vertical frame and the transom to form the vertical frame. It is a supporting member.

According to this configuration, the number of parts of the fire door can be reduced and the work of attaching the regulating member and the reinforcing member can be reduced as compared with the configuration in which the reinforcing member is formed separately from the regulating member.

[19] According to one form subordinate to the fire door, the inner regulating member includes the end regulating member.

According to this configuration, the number of parts of the fire door can be reduced as compared with the case where the inner regulating member and the end regulating member are individually formed.

According to the fire door according to the present invention, it becomes difficult for hot air having an excessively high temperature to enter the transom light.

The front view which shows the appearance of the fire door of 1st Embodiment. FIG. 2 is a cross-sectional view taken along the line D2-D2 of FIG. (A) Rear view of part of transom light, (b) Plan view of part of transom light. The perspective view of the sliding door of FIG. (A) Cross-sectional view of a part of transom light before exposure to flame, (b) Cross-sectional view of part of transom light after exposure to flame. (A) Cross-sectional view of a part of transom light before exposure to flame, (b) Cross-sectional view of part of transom light after exposure to flame. (A) Cross-sectional view of a part of transom light before exposure to flame, (b) Cross-sectional view of part of transom light after exposure to flame. (A) Cross-sectional view of a part of transom light before exposure to flame, (b) Cross-sectional view of part of transom light after exposure to flame. The front view which shows the appearance of the fire door of the 2nd Embodiment. FIG. 9 is a cross-sectional view taken along the line D10-D10 of FIG. FIG. 9 is a perspective sectional view of the sliding door and the vertical frame of FIG. FIG. 9 is a cross-sectional view of the sliding door and the vertical frame of FIG. (A) Schematic front view of the sliding door and part of the transom light before being exposed to the flame, (b) Schematic front view of the sliding door and part of the transom light after being exposed to the flame. Regarding the fire door of the modified example, (a) a cross-sectional view of a part of the transom light and (b) a rear view of a part of the transom light.

(First Embodiment)
Hereinafter, the fire door of the first embodiment will be described with reference to FIGS. 1 to 8. In FIGS. 2 to 8, the foaming material is shaded for convenience. The fire door 1 of the first embodiment is a draw-type fire door as shown in FIG.

As shown in FIG. 1, the fire door 1 is above a pair of vertical frames 2 and a pair of vertical frames 2 arranged at intervals in the longitudinal direction of a rectangular frontage 200 formed in a building. It comprises a transom 40 arranged and supported by a pair of vertical frames 2. The vertical frame 2 has a hollow shape and extends in the height direction ZA of the fire door 1. A storage space 41 is formed inside the transom light 40.

Between the pair of vertical frames 2, two fixed walls 10 and a first sliding door 20A and a second sliding door 20B that move along the direction in which the two fixed walls 10 are arranged are provided. The two fixed walls 10 are arranged apart from each other to form an entrance / exit between the two fixed walls 10. The sliding doors 20A and 20B are arranged on the back side of the fixed wall 10 in the front-rear direction ZC (see FIG. 2) of the fire door 1. The sliding doors 20A and 20B are arranged so that the doorway can be opened and closed. The sliding doors such as the first sliding door 20A and the second sliding door 20B are examples of doors, and the fire door 1 may be provided with an open door or a folding door instead of the sliding door.

The fixed wall 10 is arranged between the hollow-shaped neutral 11 extending in the height direction ZA and between the central 11 and the vertical frame 2, and the opening / closing direction of each of the sliding doors 20A and 20B (hereinafter, "driving direction ZB"). ), The vertical frame 2, the neutral side 11, and the heat-resistant glass 13 supported by the skirting board 12 are provided.

The first sliding door 20A includes a heat-resistant glass 21, a door-end side vertical frame 22 that supports one side of the heat-resistant glass 21, and a door-end side vertical frame 23 that supports the other side of the heat-resistant glass 21. An upper stile 24 that supports the upper part of the heat-resistant glass 21 and a lower stile 25 that supports the lower part of the heat-resistant glass 21 are provided. The first sliding door 20A is suspended from a traveling rail (not shown) arranged in the accommodation space 41 of the transom light 40 via the first door hanger 110 having a door roller, and is slidably slidable in the drive direction ZB by the first door hanger 110. It is supported. The second sliding door 20B has the same configuration. Further, the door hanger on which the second sliding door 20B is suspended is referred to as a second door hanger 120.

A drive unit 30 for driving the first sliding door 20A and the second sliding door 20B is arranged in the accommodation space 41 of the transom light 40. The drive unit 30 moves the first sliding door 20A and the second sliding door 20B in the driving direction ZB, and the first sliding door 20A and the second sliding door 20B approach and separate from each other to open and close the doorway between the two fixed walls 10. ..

The drive unit 30 is arranged at intervals from the electric motor 31, the drive sprocket 32 connected to the output shaft of the electric motor 31 via a speed reducer (not shown), and the drive sprocket 32 in the drive direction ZB. It is equipped with a driven sprocket 33. The drive unit 30 further includes a chain 34 wound around the drive sprocket 32 and the driven sprocket 33, and a control unit 35 that controls the electric motor 31.

The chain 34 includes a first portion 34A and a second portion 34B that move in different directions from each other. The first portion 34A and the upper stile 24 of the first sliding door 20A are connected via the first door hanger 110. The second portion 34B and the upper stile 24 of the second sliding door 20B are connected via the second door hanger 120. The driving force of the electric motor 31 is transmitted to the first door hanger 110 and the second door hanger 120 via the chain 34, so that the first sliding door 20A and the second sliding door 20B are opened and closed. In the transom light 40, when it is detected that a fire has occurred in the building where the fire door 1 is installed in addition to the drive unit 30, the sliding door 20 is automatically moved in the closing direction. A closing device (not shown) is arranged.

The fire door 1 further includes a plurality of sensors for detecting moving objects and stationary objects around the first sliding door 20A and the second sliding door 20B. The plurality of sensors include a transom-mounted sensor 61, three front-side photoelectric sensors 62, and three rear-side photoelectric sensors 63, which are attached to the front side and the back side of the transom 40, respectively. In the following description, among the spaces partitioned by the fire door 1, the space facing the front of the fixed wall 10 and the sliding doors 20A and 20B is referred to as an outdoor space, and the space facing the front of the fixed wall 10 and the sliding doors 20A and 20B is referred to as an outdoor space. The space facing the room is called an indoor space.

The transom light mounting type sensor 61 is, for example, a near-infrared reflection type sensor, and is mounted at the center of the drive direction ZB of the transom light 40.
The three front side photoelectric sensors 62 are sensors that detect moving objects and stationary objects existing in the outdoor space. Each front side photoelectric sensor 62 includes a floodlight 62A that outputs light and a light receiver 62B that receives the light output by the floodlight 62A. The three floodlights 62A are attached to the neutral 11 of the fixed wall 10 on the first sliding door 20A side, and are arranged side by side along the height direction ZA. The three photoreceivers 62B are attached to the neutral 11 of the fixed wall 10 on the second sliding door 20B side, and are arranged side by side along the height direction ZA. Each floodlight 62A and each receiver 62B face each other in the drive direction ZB.

The three rear side photoelectric sensors 63 are sensors that detect moving objects and stationary objects existing in the indoor space. Each rear side photoelectric sensor 63 includes a floodlight 63A that outputs light and a light receiver 63B that receives light output by the floodlight 63A. The three floodlights 63A are attached to the vertical frame 2 on the side of the first sliding door 20A and are arranged side by side along the height direction ZA. The three photoreceivers 63B are attached to the vertical frame 2 on the second sliding door 20B side, and are arranged side by side along the height direction ZA. Each floodlight 63A and each receiver 63B face each other in the drive direction ZB.

The internal structure of the transom light 40 will be described with reference to FIG. In FIG. 2, for the sake of simplification of the drawing, the region where the drive unit 30 is arranged is shown by a two-dot chain line.
As shown in FIG. 2, the transom light 40 is formed in a box shape so that the back side is open. Specifically, the transom 40 includes a front wall 42 constituting the front surface of the transom 40, a bottom wall 43 constituting the lower surface of the transom 40, an upper wall 44 constituting the upper surface of the transom 40, and the transom 40. It has a side wall 45 that constitutes the end face in the longitudinal direction of the above. The bottom wall 43 extends to the back end of the fixed wall 10. A lower fixing wall 43A extending downward is formed at the back end of the bottom wall 43. The upper wall 44 extends to the back side of the first sliding door 20A. An upper fixed wall 44A extending downward is formed at the back end of the upper wall 44.

In the transom light 40, a pair of side walls 45 are connected to the vertical frame 2 by bolts 300 and suspended by anchors (not shown) of the skeleton. A decorative cover 46 that covers the front wall 42 from the front side is attached to the transom light 40. An inspection cover 48 is attached to the upper fixing wall 44A of the transom light 40 via a hinge 47 so as to open and close the opening of the transom light 40. An L-shaped core material 49 is arranged on the front side and the lower side in the accommodation space 41 of the transom light 40. The core material 49 is formed of, for example, iron and is welded to the front wall 42 and the bottom wall 43. The inspection cover 48 corresponds to an opening / closing cover that opens / closes the accommodation space 41.

As shown in FIG. 2, a wiring hole 51 for inserting the wiring 61A of the transom-mounted sensor 61 on the front side is formed on the front side of the transom 40. The wiring hole 51 is a through hole that penetrates the decorative cover 46 and the front wall 42 of the transom light 40 in the front-rear direction ZC, and communicates with the accommodation space 41. That is, the wiring hole 51 becomes a part of the air passage communicating with the accommodation space 41. The opening on the accommodation space 41 side in the wiring hole 52 is the opening on the side communicating with the accommodation space 41 in the air passage. The wiring 61A of the transom-light-mounted sensor 61 on the front side is drawn into the accommodation space 41 through the wiring hole 51 and is electrically connected to the control unit 35 of the drive unit 30.

As shown in FIGS. 1 and 2, a wiring hole 52 for inserting the wiring 62C of the three floodlights 62A of the front side photoelectric sensor 62 is formed in the lower portion of the transom light 40. The wiring hole 52 is a through hole that penetrates the bottom wall 43 and the core material 49 of the transom light 40 in the height direction ZA, and communicates with the accommodation space 41. That is, the wiring hole 52 becomes a part of the air passage communicating with the accommodation space 41. The opening on the accommodation space 41 side in the wiring hole 52 is the opening on the side communicating with the accommodation space 41 in the air passage. Further, in the lower portion of the transom light 40 on the second sliding door 20B side, a wiring hole (not shown) for inserting the wiring 62D of the three light receivers 62B of the front side photoelectric sensor 62 is formed. This wiring hole is a through hole that penetrates the bottom wall 43 and the core material 49 of the transom light 40 in the height direction ZA, and communicates with the accommodation space 41. That is, the wiring hole into which the wiring 62D is inserted becomes a part of the air passage communicating with the accommodation space 41. The opening on the accommodation space 41 side in the wiring hole is the opening on the side communicating with the accommodation space 41 in the air passage.

The wiring 62C of the three floodlights 62A passes through the inside of the neutral wall 10 of the fixed wall 10 on the first sliding door 20A side, is drawn into the accommodation space 41 through the wiring hole 52, and is electrically connected to the control unit 35. There is. The wiring 62D of the three light receivers 62B passes through the inside of the neutral 11 of the fixed wall 10 on the second sliding door 20B side, is drawn into the accommodation space 41 through the wiring hole, and is electrically connected to the control unit 35. There is.

A wiring hole 53 for inserting the wiring 63C of the three floodlights 63A of the rear side photoelectric sensor 63 is formed in the side wall 45 on the first sliding door 20A side in the transom light 40. The wiring hole 53 penetrates the side wall 45 of the transom light 40 in the drive direction ZB. Further, a wiring hole (not shown) for inserting the wiring 63D of the three light receivers 63B of the rear side photoelectric sensor 63 is formed in the side wall 45 on the second sliding door 20B side in the transom light 40.

The wiring 63C of the three floodlights 63A passes through the vertical frame 2 on the first sliding door 20A side, is drawn into the accommodation space 41 through the wiring hole 53, and is electrically connected to the control unit 35. The wiring 63D of the three light receivers 63B passes through the vertical frame 2 on the second sliding door 20B side, is drawn into the accommodation space 41 through the wiring hole, and is electrically connected to the control unit 35.

As shown in FIG. 2, a smoke return 70 is provided in the air passage between the first sliding door 20A and the transom 40. The smoke return 70 is also provided in the air passage between the second sliding door 20B and the transom 40. The smoke return 70 is located below the transom light 40 and between the upper end portion of the fixed wall 10 and the upper end portion of the first sliding door 20A in the front-rear direction ZC. The smoke return 70 includes a transom side smoke return piece 71 provided in the transom 40 and a sliding door side smoke return piece 72 provided in the first sliding door 20A. The transom light return piece 71 has a lower horizontal piece 71A extending horizontally in the front-rear direction ZC and an upper vertical piece 71B extending upward from the edge of the lower horizontal piece 71A. The sliding door side smoke return piece 72 is attached to the upper surface of the first sliding door 20A. The sliding door side smoke return piece 72 has an upper horizontal piece 72A extending horizontally in the front-rear direction ZC and a lower vertical piece 72B extending downward from the edge of the upper horizontal piece 72A. The vertical pieces 71B and 72B are arranged so as to be parallel to each other between the fixed wall 10 and the first sliding door 20A in the front-rear direction ZC. The upper vertical piece 71B is arranged at a distance on the back side of the lower vertical piece 72B. The lower vertical pieces 72B are arranged at intervals on the back side of the lower fixed wall 43A of the bottom wall 43 of the transom light 40 in the front-rear direction ZC. The smoke return 70 is similarly provided between the fixed wall 10 and the second sliding door 20B in the front-rear direction ZC.

As shown in FIG. 4, the mating portion 80 is composed of the door tip of the first sliding door 20A and the door tip of the second sliding door 20B. The combined portion 80 includes a convex portion 26 formed at the door end of the first sliding door 20A and a concave portion 27 formed at the door end of the second sliding door 20B into which the convex portion 26 can enter. The mating portion 80 may have a configuration in which a concave portion 27 is formed at the door tip of the first sliding door 20A and a convex portion 26 is formed at the door tip of the second sliding door 20B.

In the combined portion 80, when the fire door 1 is fully closed, the door tip of the first sliding door 20A and the door tip of the second sliding door 20B do not come into contact with each other in the driving direction ZB. That is, when the fire door 1 is fully closed, there is a gap (not shown) between the door tip of the first sliding door 20A and the door tip of the second sliding door 20B in the drive direction ZB due to the impact absorbing door stop rubber (not shown). Hereinafter, a “gap of the mating portion 80”) is formed. The gap of the mating portion 80 is formed over the entire sliding doors 20A and 20B in the height direction ZA. The gap of the mating portion 80 becomes a part of the air passage communicating with the accommodating space 41. The portion that opens upward in the gap of the mating portion 80 becomes an opening that communicates with the accommodation space 41 in the air passage.

By the way, as shown in FIG. 2, the transom 40 includes a wiring hole 51 of the transom-mounted sensor 61, a wiring hole (wiring hole 52) of the front side photoelectric sensor 62, a smoke return 70, and the transom light return 70. An air passage communicating with the accommodation space 41 such as a gap formed in the mating portion 80 is formed. Then, through these air passages, the air in the outdoor space communicates with the inside of the transom light 40 (accommodation space 41) without touching the air in the indoor space. When a fire breaks out in the outdoor space, the air in the outdoor space heated by the flame may enter the accommodation space 41 as hot air through the above-mentioned air passage. When the hot air enters the accommodation space 41 without touching the air in the indoor space, the temperature of the accommodation space 41 rises sharply due to the hot air.

On the other hand, in the transom 40, the wiring hole (wiring hole 53) of the back side photoelectric sensor 63 is formed with an air passage that communicates the indoor space and the inside of the transom 40. Then, through this air passage, the air in the outdoor space comes into contact with the air in the indoor space, and then communicates with the inside of the transom light 40 (accommodation space 41). In this case, since the hot air comes into contact with the air in the indoor space, the temperature of the hot air drops sharply, so that the temperature of the accommodation space 41 is suppressed from becoming excessively high due to the hot air.

As described above, when the hot air in the outdoor space does not come into contact with the air in the indoor space and directly enters the accommodation space 41 through the air passage, the degree of temperature rise in the accommodation space 41 is such that the hot air in the outdoor space is air. It is larger than the degree of temperature rise in the accommodation space 41 when entering the accommodation space 41 after coming into contact with the air in the indoor space through the passage.

Therefore, in order to suppress the temperature rise of the accommodation space 41, the fire door 1 is provided with a passage blocking structure capable of blocking the air passage that allows hot air to enter the accommodation space 41 without touching the air in the indoor space. ing. Hereinafter, the details of the passage blocking structure will be described.

As shown in FIG. 2, the passage blocking structure RC1 has a wiring hole 51 of the transom-light-mounted sensor 61 on the front side and a wiring hole 52 of the photoelectric sensor 62 on the front side due to a foam material that expands when heated. It has a structure to close the.

The passage blocking structure RC1 includes a first regulating member 101 arranged in the accommodation space 41. The first regulating member 101 is arranged at a position facing the opening of the wiring hole 51 on the accommodation space 41 side at a distance in the front-rear direction ZC. The first regulating member 101 is a metal fitting and is fixed to the core material 49 by a bolt 310. The first regulating member 101 is a flat plate extending in the height direction ZA and is parallel to the front wall 42 of the transom light 40. A foaming material 91 for a first wiring hole, which is an example of a foaming material, is attached to the surface of the first regulating member 101 on the side of the wiring hole 51. Therefore, the first regulating member 101 regulates the expansion of the first wiring hole foam material 91 toward the back surface side.

As the foaming material 91 for the first wiring hole, a graphite-based foaming material is used. The first wiring hole foam material 91 faces the wiring hole 51 in the front-rear direction ZC, and is arranged at a distance on the back side of the wiring hole 51. As shown in FIG. 3A, the first wiring hole foam material 91 is formed on a flat plate having an area larger than the opening area of the wiring hole 51. As a result, since the foaming material 91 for the first wiring hole is provided between the wiring hole 51 and the first regulating member 101, the first regulating member 101 directly faces the wiring hole 51. Will not be.

Further, as shown in FIG. 2, the passage blocking structure RC1 includes a second regulating member 102 arranged in the accommodation space 41. The second regulating member 102 is arranged at a position facing the wiring hole 52 at a distance in the height direction ZA. Therefore, the second regulating member 102 is arranged in the accommodation space 41. The second regulating member 102 is a flat plate extending in the driving direction ZB and the front-rear direction ZC, and is parallel to the bottom wall 43 of the transom light 40. As shown in FIGS. 2 and 3B, the second regulating member 102 includes a first flat plate 102A having a longitudinal direction ZC in the front-rear direction and a second flat plate 102B extending upward from the edge of the first flat plate 102A. Is a metal fitting integrally formed with. The second regulating member 102 is fixed to the core material 49 by the bolt 320 in the second flat plate 102B. In the first flat plate 102A, the foaming material 92 for the second wiring hole, which is an example of the foaming material, is attached to the surface on the side of the wiring hole 52. Therefore, the foaming material 92 for the second wiring hole restricts the upward expansion of the foaming material 92 for the second wiring hole.

As the foaming material 92 for the second wiring hole, a graphite-based foaming material is used. The second wiring hole foam material 92 faces the wiring hole 52 in the height direction ZA, and is arranged at a distance above the wiring hole 52. As shown in FIG. 3B, the second wiring hole foaming material 92 is formed on a flat plate having an area larger than the opening area of the wiring hole 52. As a result, since the foaming material 92 for the second wiring hole is provided between the wiring hole 52 and the second regulating member 102, the second regulating member 102 directly faces the wiring hole 52. Will not be. As shown in FIGS. 3A and 3B, the front view shape of the first wiring hole foam material 91 and the front view shape of the second wiring hole foam material 92 are quadrangular. However, it may be a circle or a polygon other than a quadrangle.

Further, as shown in FIG. 2, the passage blocking structure RC2 includes a structure in which the opening 73 on the accommodation space 41 side in the air passage of the smoke return 70 is closed by a foam material that expands when heated.

Specifically, the inner foam material 93 is attached to the upper surface of the portion of the upper horizontal piece 72A of the sliding door side smoke return piece 72 on the front side of the sliding doors 20A and 20B. That is, the inner foam material 93 is supported from below by the upper horizontal piece 72A. The inner foam material 93 is provided between the fixed wall 10 and the sliding doors 20A and 20B (see FIG. 1) in the front-rear direction ZC. The inner foam material 93 extends over the entire drive direction ZB of the upper horizontal piece 72A. As described above, the inner foam material 93 is provided on the accommodation space 41 side with respect to the smoke return 70.

An inner regulating member 103 is provided at a portion of the transom 40 above the inner foaming material 93 and facing the inner foaming material 93 in the height direction ZA. The inner regulating member 103 is a metal fitting. The inner restricting member 103 has an L-shaped cross section and extends over the entire drive direction ZB of the upper horizontal piece 72A. The inner regulating member 103 has a structure in which a first flat plate 103A extending in the driving direction ZB and the front-rear direction ZC and a second flat plate 103B extending downward from the edge of the first flat plate 103A are integrally formed. The inner regulating member 103 is fixed to the transom 40 by, for example, spot welding the back surface of the lower fixing wall 43A of the bottom wall 43 and the second flat plate 103B in the transom 40. The first flat plate 103A extends from the lower fixed wall 43A to the first door hanger 110 (second door hanger 120 (see FIG. 1)) in the front-rear direction ZC. The position of the first flat plate 103A in the height direction ZA is above the upper horizontal piece 72A of the sliding door side smoke return piece 72 when the sliding doors 20A and 20B extend upward due to thermal expansion, and the inner foaming material. 93 is set at a position where the gap between the first flat plate 103A and the upper horizontal piece 72A can be closed.

An outer foam material 94 is attached to the upper surface of the lower horizontal piece 71A of the transom light return piece 71. That is, the outer foam material 94 is supported from below by the lower horizontal piece 71A. The outer foam material 94 is provided between the fixed wall 10 and the sliding doors 20A and 20B (see FIG. 1) in the front-rear direction ZC, and extends over the entire drive direction ZB of the lower horizontal piece 71A. The outer foam material 94 faces the lower vertical piece 72B of the sliding door side smoke return piece 72 in the height direction ZA. A graphite-based foaming material is used for each of the outer foaming material 94 and the inner foaming material 93.

Further, as shown in FIG. 4, the passage blocking structure RC3 has a structure in which the upper opening in the gap of the mating portion 80 is closed by a foaming material that expands when heated.
The passage blocking structure RC3 is a first foaming material 95 supported from below by a door tip on the first sliding door 20A side, which is a mating portion on the first sliding door 20A side, and a mating portion on the second sliding door 20B side. A second foam material 96 supported from below by the door tip on the second sliding door 20B side is provided. The first foam material 95 is attached to the upper surface of the portion corresponding to the door tip of the first sliding door 20A in the upper horizontal piece 72A of the sliding door side smoke return piece 72 attached to the upper surface of the first sliding door 20A. The second foam material 96 is attached to the upper surface of the portion corresponding to the door tip of the second sliding door 20B in the upper horizontal piece 72A of the sliding door side smoke return piece 72 attached to the upper surface of the second sliding door 20B. A graphite-based foaming material is used for each of the first foaming material 95 and the second foaming material 96.

As shown in FIG. 4, the first foaming material 95 and the second foaming material 96 have a shape that follows the uneven shape of the combined portion 80. Specifically, the first foaming material 95 is composed of two linear foaming materials having different lengths. The short foam material is attached to the convex portion 26 of the first sliding door 20A. The second foam material 96 is composed of four linear foam materials having different lengths. These four foaming materials are attached along the recess 27 of the second sliding door 20B. Further, the front end portions of the first foam material 95 and the second foam material 96 are adjacent to the inner foam material 93 on the back side of the inner foam material 93 in the front-rear direction ZC.

Above the first foam material 95 and the second foam material 96, a combined side regulation member 104, which is an example of the regulation member, is provided. The mating side regulating member 104 faces the opening above the gap of the mating portion 80 and the foaming materials 95 and 96 at intervals in the height direction ZA. As a result, the foaming materials 95 and 96 are provided between the mating portion 80 and the mating side regulating member 104. The combined side regulating member 104 includes a flat plate portion 104A extending along the drive direction ZB and the front-rear direction ZC, and a support portion 104B having a substantially U-shaped cross section at the end portion of the flat plate portion 104A on the inspection cover 48 (see FIG. 2) side. Is a metal fitting integrally formed with. The flat plate portion 104A is formed in a rectangular shape having a longitudinal ZC in the front-rear direction in a plan view. The flat plate portion 104A covers the combined portion 80 in the driving direction ZB and the front-rear direction ZC. As shown in FIG. 2, the combined side regulating member 104 is arranged on the upper surface of the first flat plate 103A of the inner regulating member 103, and is fixed to the inner regulating member 103 by spot welding, for example. The position of the flat plate portion 104A of the mating side regulating member 104 in the height direction is higher than the upper horizontal piece 72A of the sliding door side smoke return piece 72 when the sliding doors 20A and 20B extend upward due to thermal expansion. In addition, the foam materials 95 and 96 are set at positions where the gap between the flat plate portion 104A and the upper horizontal piece 72A can be closed. The support portion 104B is in contact with the surface of the inspection cover 48 on the accommodation space 41 side. That is, the support portion 104B supports the inspection cover 48 from the front side.

Next, the operation and effect of the fire door 1 will be described with reference to FIGS. 2 and 4 to 8.
As shown in FIG. 2, when a fire breaks out in the outdoor space of the fire door 1 installed in the building, the fire door 1 is heated by the flame and hot air. In this case, each passage blocking structure RC1 to RC3 closes the passage as follows.

That is, as shown in FIG. 5A, when the first wiring hole foaming material 91 is heated by heating the transom light 40 in the passage blocking structure RC1, it is shown in FIG. 5B. As such, the foaming material 91 for the first wiring hole expands and closes the gap between the first regulating member 101 and the front wall 42 of the transom light 40 and the wiring hole 51. Therefore, it is possible to prevent hot air from entering the accommodation space 41 through the wiring hole 51. Further, since the first regulating member 101 regulates the expansion of the first wiring hole foam material 91 toward the back surface side, the first wiring hole foam material 91 expands toward the front wall 42. Therefore, the density of the foaming material 91 for the first wiring hole that closes the gap between the first regulating member 101 and the front wall 42 and the wiring hole 51 becomes high. As a result, hot air from the wiring hole 51 is prevented from leaking from the first wiring hole foam material 91 toward the accommodation space 41 and entering the accommodation space 41.

Further, as shown in FIG. 6A, when the second wiring hole foaming material 92 is heated by heating the transom 40 in the passage blocking structure RC1, it is shown in FIG. 6B. As described above, the foaming material 92 for the second wiring hole expands, and closes the gap between the second regulating member 102 and the core material 49 and the wiring hole 52. Therefore, it is possible to prevent hot air from entering the accommodation space 41 through the wiring hole 52. Further, since the expansion of the second wiring hole foam material 92 upward is restricted by the second regulating member 102, the second wiring hole foam material 92 expands toward the core material 49. Therefore, the density of the second wiring hole foaming material 92 that closes the gap between the second regulating member 102 and the core material 49 and the wiring hole 52 becomes high. As a result, hot air from the wiring hole 52 is prevented from leaking from the second wiring hole foam material 92 toward the accommodation space 41 and entering the accommodation space 41.

Further, as shown in FIG. 7A, in the passage blocking structure RC2, when the outer foam material 94 is heated by heating the first sliding door 20A and the transom 40, the outer foam material 94 expands. , Blocks the air passage on the inlet side of the smoke return 70. At this time, since the lower horizontal piece 71A of the transom light return piece 71 restricts the downward expansion of the outer foam material 94, the outer foam material 94 expands upward. Therefore, the air passage on the inlet side of the smoke return 70 is effectively blocked. Therefore, it is possible to prevent hot air from entering the smoke return 70.

Then, as the first sliding door 20A and the transom light 40 are further heated, the first sliding door 20A expands upward due to thermal expansion. At this time, as shown in FIG. 7B, the upward extension of the first sliding door 20A reduces the gap between the inner foaming material 93 and the inner regulating member 103. In addition, when the first sliding door 20A extends upward, the lower vertical piece 72B of the sliding door side smoke return piece 72 and the second flat plate 103B of the inner regulating member 103 face each other in the front-rear direction ZC. As a result, in the front-rear direction ZC, the gap between the lower vertical piece 72B of the sliding door side smoke return piece 72 and the second flat plate 103B of the inner restricting member 103 becomes smaller than the air passage of the smoke return 70. In such a state, the inner foam material 93 is heated and the inner foam material 93 expands, blocking the air passage on the outlet side of the smoke return 70. Then, since the upper horizontal piece 72A of the sliding door side smoke return piece 72 restricts the downward expansion of the inner foam material 93, the inner foam material 93 expands upward. Therefore, the density of the inner foam material 93 that closes between the upper horizontal piece 72A of the sliding door side smoke return piece 72 and the inner restricting member 103 becomes high. As a result, hot air is prevented from leaking from the inner foam material 93 and entering the accommodation space 41. Further, the inner foam material 93 regulated by the second flat plate 103B of the inner regulating member 103 expands downward and is between the lower vertical piece 72B of the sliding door side smoke return piece 72 and the second flat plate 103B of the inner regulating member 103. Close the gap. As described above, in the smoke return 70, since the outer foam material 94 and the inner foam material 93 are configured to prevent the hot air from entering the accommodation space 41 in a double manner, the hot air enters the accommodation space 41 through the smoke return 70. Intrusion is further suppressed.

Further, as shown in FIG. 8A, when the first sliding door 20A is heated and extends upward due to the thermal expansion of the first sliding door 20A in the passage blocking structure RC3, as shown in FIG. 8B. , The gap in the height direction ZA between the upper horizontal piece 72A of the sliding door side smoke return piece 72 and the combined side regulating member 104 becomes smaller. Then, when the first foam material 95 and the second foam material 96 shown in FIG. 4 are heated, the foam materials 95 and 96 expand, and the door ends of the first sliding door 20A and the door ends of the second sliding door 20B are formed. The gap in the driving direction ZB is closed. Since each of the foam materials 95 and 96 is attached to the upper surface of the upper horizontal piece 72A of the sliding door side smoke return piece 72, the downward expansion is restricted and the foam material expands upward. The movement of each of the foam materials 95 and 96 is restricted by the flat plate portion 104A of the combined side regulating member 104. Therefore, the density of each foaming material 95, 96 between the upper horizontal piece 72A of the sliding door side smoke return piece 72 and the flat plate portion 104A of the combined side regulating member 104 in the height direction ZA becomes high. Further, the foaming materials 95 and 96 defined by the flat plate portion 104A of the combined side regulating member 104 enter the gap in the drive direction ZB between the door tip of the first sliding door 20A and the door tip of the second sliding door 20B. In this way, the foaming materials 95 and 96 prevent hot air from directly entering the accommodation space 41 through the gap in the drive direction ZB between the door tip of the first sliding door 20A and the door tip of the second sliding door 20B. .. On the other hand, the hot air may enter the accommodation space 41 after passing through the gap in the drive direction ZB between the door end of the first sliding door 20A and the door end of the second sliding door 20B to the back side of each sliding door 20A, 20B. be. However, the hot air that has passed through the back side of each of the sliding doors 20A and 20B comes into contact with the indoor space, so that the temperature drops sharply. In that state, even if hot air enters the accommodation space 41, the temperature rise of the accommodation space 41 is suppressed.

As described above, in the fire door 1, the passage blocking structures RC1 to RC3 block the air passage through which the outdoor space communicates with the accommodation space 41 without the air in the outdoor space coming into contact with the air in the indoor space. Therefore, since hot air is suppressed from entering the accommodation space 41, the temperature in the accommodation space 41, and eventually the temperature of the drive unit 30, is less likely to rise.

The fire door 1 of the first embodiment further has the following effects.
(1) The first foaming material 95 and the second foaming material 96 are attached to the upper surface of the upper horizontal piece 72A of the sliding door side smoke return piece 72 in the mating portion 80. That is, the first foam material 95 is supported from below by the mating portion 80 on the first sliding door 20A side, and the second foam material 96 is supported from below by the mating portion 80 on the second sliding door 20B side. According to this configuration, since the foaming materials 95 and 96 are located on both sides of the opening above the gap between the first sliding door 20A and the second sliding door 20B which is the opening of the air passage, each foaming material 95 When the, 96 expands, it tends to close the opening. Therefore, the density of each foaming material 95, 96 that closes the opening is increased, and it is possible to further prevent hot air from leaking from each foaming material 95, 96. In addition, the foaming materials 95 and 96 are prevented from being peeled off from the upper horizontal piece 72A due to their own weight.

(2) The first foaming material 95 and the second foaming material 96 are attached along the uneven shape of the mating portion 80. Therefore, the foaming materials 95 and 96 can be arranged close to the opening above the gap between the first sliding door 20A and the second sliding door 20B, which is the opening of the air passage. Therefore, the foaming materials 95 and 96 can be expanded to sufficiently close the opening even for a complicated opening shape.

(3) In order to regulate the expansion of the first foam material 95 and the second foam material 96 and increase the density of each foam material 95, 96, the combined side regulating member 104 is close to each foam material 95, 96. It is preferable to be arranged in. Therefore, it is conceivable that the combination side regulating member 104 is arranged above the combination section 80 and near the combination section 80.
On the other hand, the first sliding door 20A and the second sliding door 20B extend upward due to thermal expansion. Therefore, when the mating side regulating member 104 is arranged above the mating portion 80 and near the mating portion 80, when the sliding doors 20A and 20B extend upward due to thermal expansion, the mating side regulating member 104 And there is a risk that the combination side regulating member 104 will bend.
Under such circumstances, the inventor of the present application has placed the summoning side regulating member 104 closer to the summarizing portion 80 in that state, based on the state in which the sliding doors 20A and 20B are extended upward due to thermal expansion. It was found that the calling side regulating member 104 is arranged at a position where it can be arranged.
Based on such knowledge, in the combined side regulating member 104, when the first sliding door 20A and the second sliding door 20B are extended upward due to thermal expansion, the foaming materials 95 and 96 are combined with the combined portion 80 on the combined side. It is arranged at a position where the space between the regulating member 104 and the regulating member 104 can be closed. Therefore, each of the foaming materials 95 and 96 expands due to heating, and the space between the combined portion 80 and the combined side regulating member 104 is closed, and each foaming material 95 is closed by the combined side regulating member 104. Since the expansion of, 96 is restricted, the density of each foaming material 95, 96 that closes the opening can be increased. In addition, it is possible to prevent the calling side regulating member 104 from bending due to the interference between the calling side regulating member 104 and the mating portion 80.

(4) The outer foam material 94 is supported from below by the lower horizontal piece 71A of the transom light return piece 71, and the inner foam material 93 is supported from below by the upper horizontal piece 72A of the sliding door side smoke return piece 72. ing. According to this configuration, it is possible to prevent the foaming materials 93 and 94 from peeling off from the horizontal pieces 71A and 72A due to their own weight. Therefore, the outer foam material 94 falls off from the lower horizontal piece 71A and cannot block the air passage of the smoke return 70, and the inner foam material 93 falls off from the upper horizontal piece 72A to the inner restricting member 103 and the upper horizontal piece. It is possible to prevent the gap between the 72A and the opening 73 from being closed.

(5) The first regulating member 101 is arranged in the accommodation space 41, and the first wiring hole foaming material 91 is attached to the surface of the first regulating member 101 on the wiring hole 51 side. As a result, the foaming material 91 for the wiring hole expands and closes the wiring hole 51, so that hot air from the wiring hole 51 is suppressed from entering the first regulating member 101 side. Therefore, it is possible to prevent the hot air from directly hitting the first regulating member 101, and to prevent the temperature in the accommodation space 41 from rising due to the heating of the first regulating member 101. The same effect can be obtained for the second regulating member 102.

(6) The first foaming material for wiring holes 91 faces the wiring holes 51 and has an area equal to or larger than the opening area of the wiring holes 51. Therefore, the wiring hole 51 can be sufficiently closed.

(7) The calling side regulating member 104 supports the inspection cover 48 from the front side. Therefore, the number of parts of the fire door 1 can be reduced as compared with the configuration in which the support member supporting the inspection cover 48 is formed separately from the combined side regulation member 104.

(8) The first regulating member 101 is fixed to the core material 49 by the bolt 310 after the wiring 61A of the transom-mounted sensor 61 is pulled into the accommodation space 41 from the wiring hole 51. Therefore, it is possible to prevent the first restricting member 101 from interfering with the wiring work of the wiring 61A.

(9) The second regulating member 102 is fixed to the core material 49 by the bolt 320 after the wiring 62C of the floodlight 62A of the front side photoelectric sensor 62 is pulled into the accommodation space 41 from the wiring hole 52. Therefore, it is possible to prevent the second restricting member 102 from interfering with the wiring work of the wiring 62C.

(Second embodiment)
The fire door 1 of the second embodiment will be described with reference to FIGS. 9 to 13. Hereinafter, the differences from the fire door 1 of the first embodiment will be described in detail, and the description of the configuration common to the fire door 1 of the first embodiment will be omitted by using the same reference numerals. As shown in FIG. 9, the fire door 1 of the second embodiment is a one-sided fire door 1. Therefore, the dimension of the drive direction ZB of the transom light 40 is smaller than the dimension of the drive direction ZB of the transom light 40 of the first embodiment.

Between the pair of vertical frames 2, one fixed wall 10 and a sliding door 20 that moves along the driving direction ZB are provided. An entrance / exit is formed between the fixed wall 10 and the vertical frame 2 on the sliding door 20 side. The sliding door 20 is arranged on the back side of the fixed wall 10 so that the doorway can be opened and closed. The sliding door 20 is an example of a door, and the fire door 1 may include an open door driven by the drive unit 30 or a folding door driven by the drive unit 30 instead of the sliding door.

As shown in FIG. 10, a wiring hole 54 is formed on the front wall 42 side and above the side wall 45 of the transom light 40, while a wiring hole 53 formed on the back side and above the side wall 45 is formed. It is omitted. The wiring hole 54 is provided with the passage blocking structure RC4 as in the passage closing structure RC1.

Specifically, the passage blocking structure RC4 includes a third regulating member 105, which is an example of a regulating member facing the wiring hole 54 with a gap in the driving direction ZB. The third regulating member 105 is a metal fitting in which a first flat plate 105A extending in the front-rear direction ZC and the height direction ZA and a second flat plate 105B extending from the edge of the first flat plate 105A in the driving direction ZB are integrally formed. be. The third regulating member 105 is fixed by fastening the second flat plate 105B to the front wall 42 of the transom light 40 with bolts 330. The first flat plate 105A is a rectangle whose longitudinal direction is ZC in the front-rear direction when viewed from the side. The first flat plate 105A faces the wiring hole 54 at a distance in the driving direction ZB. A foaming material 97 for a third wiring hole, which is an example of a foaming material, is attached to the surface of the first flat plate 105A on the side of the wiring hole 54. That is, the foaming material 97 for the third wiring hole is provided between the wiring hole 54 and the third regulating member 105. As the foaming material 97 for the third wiring hole, a graphite-based foaming material is used. The foaming material 97 for the third wiring hole is formed in a flat plate shape parallel to the side wall 45 and having a longitudinal ZC in the front-rear direction. The third wiring hole foam material 97 has an area larger than the opening area of the wiring hole 54.

Further, in the side wall 45 on the sliding door 20 side of the transom light 40, a wiring hole (not shown) for inserting the wiring 63D of the three light receivers 63B of the rear side photoelectric sensor 63 is provided on the front wall 42 side and above. It is formed. Similar to the wiring hole 54, the wiring hole is also provided with the passage blocking structure RC4.

11 and 12 show the configuration of the vertical frame 2 on the sliding door 20 side and the door end 28 of the sliding door 20.
As shown in FIG. 11, the vertical frame 2 is formed with a recess 2A that is recessed in a direction away from the sliding door 20. The door tip 28 of the sliding door 20 enters the recess 2A of the vertical frame 2 when the sliding door 20 is fully closed. As shown in FIG. 12, a gap is formed between the door tip 28 of the sliding door 20 and the recess 2A by a door stop rubber (not shown) for impact mitigation. This gap is part of an air passage that communicates with the accommodation space 41. The opening above this gap is the opening on the accommodation space 41 side in the air passage.

As shown in FIGS. 11 and 12, the fire door 1 has a passage blockage that closes the gap between the door tip 28 of the sliding door 20 and the recess 2A and the air passage between the accommodation space 41 (see FIG. 10). The structure RC5 is provided. The passage closing structure RC5 has a structure in which the opening above the gap between the door tip 28 of the sliding door 20 and the recess 2A is closed by a foam material that expands when heated.

Specifically, in the upper horizontal piece 72A of the sliding door side smoke return piece 72 attached to the upper end surface of the sliding door 20, the upper surface of the portion corresponding to the door tip 28 of the sliding door 20 is formed along the shape of the door tip 28. A convex foaming material 98, which is an example of the foaming material, is attached. That is, the convex foam material 98 is supported from below by the door tip 28 of the sliding door 20. The convex foam material 98 is composed of four linear foam materials having different lengths.

Above the sliding door 20 in the vertical frame 2, a reinforcing member 106, which is an example of a regulating member, is provided. The reinforcing member 106 is fitted in the recess 2A of the vertical frame 2. Therefore, the reinforcing member 106 is sandwiched between the vertical frame 2 and the transom 40 in the driving direction ZB. By supporting the vertical frame 2, the reinforcing member 106 suppresses the deformation of the vertical frame 2 when the transom light 40 and the vertical frame 2 are connected by the bolt 300 (see FIG. 10). The reinforcing member 106 is a metal fitting formed in a C shape in the side view of the ZC in the front-rear direction. The reinforcing member 106 is a metal fitting in which an upper wall 106A and a lower wall 106B parallel to each other at intervals in the height direction ZA and a connecting wall 106C connecting the upper wall 106A and the lower wall 106B are integrally formed. .. The upper wall 106A and the lower wall 106B are flat plates extending in the driving direction ZB and the front-rear direction ZC. The connecting wall 106C is continuous with the upper wall 106A and the lower wall 106B at the end of the upper wall 106A and the lower wall 106B on the inner restricting member 103 side in the driving direction ZB. The connecting wall 106C is a flat plate extending in the height direction ZA and the front-back direction ZC. The connecting wall 106C is formed with an insertion hole 106D for inserting the bolt 300. The position of the lower wall 106B in the height direction ZA is the same as the position of the first flat plate 103A of the inner regulating member 103 in the height direction ZA. The lower wall 106B faces the convex foam material 98 at a distance above the convex foam material 98 in the height direction ZA. Further, the lower wall 106B faces the sliding door 20 at a distance above the opening above the gap between the door tip 28 and the recess 2A. In the reinforcing member 106, when the sliding door 20 is extended upward due to thermal expansion, the convex foam material 98 can close the space between the upper horizontal piece 72A of the sliding door side smoke return piece 72 and the lower wall 106B of the reinforcing member 106. It is placed in a suitable position. As described above, the convex foam material 98 is provided between the door tip 28 of the sliding door 20 and the reinforcing member 106 when the sliding door 20 is fully closed.

Further, in the upper horizontal piece 72A of the sliding door side smoke return piece 72 attached to the upper surface of the door tip 28 of the sliding door 20, the end foam material 99 is attached to the upper surface of the portion on the front side of the door tip 28. .. That is, the end foaming material 99 is supported from below by the door end 28 of the sliding door 20. The end foaming material 99 is arranged so as to be adjacent to the front side of the convex foam material 98 from the front side end portion, and is adjacent to the inner foam material 93 in the driving direction ZB. A graphite-based foaming material is used for each of the convex foaming material 98 and the end foaming material 99.

As shown in FIG. 11, the end portion of the inner regulating member 103 in the driving direction ZB is in contact with the vertical frame 2 in the driving direction ZB. The end portion of the inner regulating member 103 in the driving direction ZB faces the end foaming material 99 in the height direction ZA. As described above, the end foaming material 99 is provided between the end of the drive direction ZB of the inner regulation member 103, which is an example of the end regulation member, and the door end 28 of the sliding door 20. Then, at the end of the drive direction ZB of the inner regulation member 103, when the sliding door 20 is extended upward due to thermal expansion, the end foam material 99 is the upper horizontal piece 72A of the sliding door side smoke return piece 72 and the inner regulation member 103. 1 The space between the flat plate 103A and the flat plate 103A is arranged at a position where it can be closed.

As shown in FIG. 13 (a), when a fire occurs in the outdoor space of the fire door 1 and the sliding door 20 and the vertical frame 2 are heated to heat the convex foam material 98, FIG. 13 (b). ), The sliding door 20 extends upward and the convex foam material 98 expands, closing the upper opening in the gap between the door tip 28 of the sliding door 20 and the recess 2A of the vertical frame 2. Therefore, the hot air that has entered the gap between the door tip 28 of the sliding door 20 and the recess 2A is suppressed from entering the accommodation space 41 through the opening above the gap. That is, the hot air that has entered the gap between the door tip 28 of the sliding door 20 and the recess 2A is suppressed from directly entering the accommodation space 41 without coming into contact with the indoor space. Further, since the upward expansion of the convex foam material 98 is regulated by the lower wall 106B of the reinforcing member 106, the convex foam material that closes the opening above the gap between the door tip 28 and the recess 2A of the sliding door 20. The density of 98 increases. Therefore, it is possible to prevent the hot air from leaking from the convex foam material 98 toward the accommodation space 41 and entering the accommodation space 41.

By the way, since the reinforcing member 106 is housed in the recess 2A of the vertical frame 2, the reinforcing member 106 has a density of the convex foam material 98 that closes the gap between the recess 2A of the vertical frame 2 and the door tip 28 of the sliding door 20. On the other hand, it does not sufficiently contribute to increasing the density of the foam material that closes the gap between the portion of the vertical frame 2 other than the recess 2A and the door tip 28 of the sliding door 20.

Therefore, as shown in FIGS. 11 and 12, the end portion of the drive direction ZB of the inner regulating member 103 covers the portion of the sliding door 20 on the front side of the door tip 28 from above, and is more than the door tip 28 of the sliding door 20. The end foaming material 99 is provided on the front side portion. As a result, when the end foaming material 99 is heated by heating the sliding door 20 and the vertical frame 2, the end foaming material 99 expands, and the front side portion of the door tip 28 of the sliding door 20 and this portion The upper opening in the gap between the vertical frame 2 facing the drive direction ZB is closed. Therefore, the hot air that has entered the gap between the front side portion of the door tip 28 of the sliding door 20 and the vertical frame 2 opens above the gap between the front side portion of the door tip 28 of the sliding door 20 and the vertical frame 2. It is suppressed from entering the accommodation space 41 through the portion. That is, the hot air that has entered the gap between the front side portion of the door end 28 of the sliding door 20 and the vertical frame 2 is suppressed from directly entering the accommodation space 41 without coming into contact with the indoor space. Further, since the upward expansion of the end foaming material 99 is restricted by the end of the drive direction ZB of the inner restricting member 103, the gap between the front side portion of the door end 28 of the sliding door 20 and the vertical frame 2 is closed. The density of the end foaming material 99 is increased. Therefore, it is possible to prevent the hot air from leaking from the end foaming material 99 toward the accommodation space 41 and entering the accommodation space 41.

The fire door 1 of the second embodiment has the following effects in addition to the effects of the fire door 1 of the first embodiment.
(10) The reinforcing member 106 has a function of suppressing deformation of the vertical frame 2 when the transom light 40 and the vertical frame 2 are connected by bolts 300, and regulates the upward expansion of the convex foam material 98. Also serves as a function to do. Therefore, the number of parts of the fire door 1 is reduced as compared with the configuration in which the regulating member for restricting the upward expansion of the convex foam material 98 is formed separately from the reinforcing member 106. In addition, since it is not necessary to install both the regulating member and the reinforcing member 106, the work when assembling the fire door 1 can be reduced.

(11) In the reinforcing member 106, when the sliding door 20 is extended upward due to thermal expansion, the convex foam material 98 is a space between the upper horizontal piece 72A of the sliding door side smoke return piece 72 and the lower wall 106B of the reinforcing member 106. Is placed in a position where it can be closed. Therefore, the convex foam material 98 expands due to heating, the space between the upper horizontal piece 72A and the lower wall 106B of the reinforcing member 106 is closed, and the reinforcing member 106 causes the sliding door 20 to reach the door end 28. It is possible to increase the density of the convex foam material 98 that closes the gap between the vertical frame 2 and the recess 2A. In addition, it is possible to prevent the reinforcing member 106 from bending due to the interference of the door tip 28 of the sliding door 20 with the reinforcing member 106.

(12) The convex foaming material 98 and the end foaming material 99 are supported from below by the door end 28 of the sliding door 20. Therefore, it is possible to prevent the convex foaming material 98 and the end foaming material 99 from peeling off from the upper horizontal piece 72A (the door end 28 of the sliding door 20) due to its own weight.

(13) At the end of the drive direction ZB of the inner regulation member 103, when the sliding door 20 is extended upward due to thermal expansion, the end foam material 99 is the upper horizontal piece 72A of the sliding door side smoke return piece 72 and the inner regulation member 103. The space between the first flat plate 103A and the first flat plate 103A is arranged at a position where it can be closed. Therefore, the end foaming material 99 expands due to heating, and the space between the upper horizontal piece 72A and the first flat plate 103A of the inner regulating member 103 is closed, and the sliding door 20 is closed by the inner regulating member 103. It is possible to increase the density of the end foaming material 99 that closes the gap between the front side portion of the tip 28 and the recess 2A of the vertical frame 2. In addition, it is possible to prevent the inner regulating member 103 from bending due to the interference of the door end 28 of the sliding door 20 with the first flat plate 103A of the inner regulating member 103.

(Modification example)
The description of each of the above embodiments is an example of a possible form of a fire door according to the present invention, and is not intended to limit the form. The fire door according to the present invention may take, for example, a modification of each embodiment shown below and a combination of at least two modifications that do not contradict each other.

(Modification 1)
The arrangement of the foaming material may be, for example, as shown in (a) to (h) below.
(A) In each of the above embodiments, as shown in FIG. 14 (a), the first wiring hole foaming material 91 is directly attached around the wiring hole 51 inside or outside the transom light 40. In this case, as shown in FIG. 14B, it is preferable that the first regulating member 101 faces the wiring hole 51 and the first wiring hole foaming material 91 in the driving direction ZB. Further, in this case, the foaming material 91 for the first wiring hole of each of the above embodiments may be further attached to the surface of the first regulation member 101 on the side of the wiring hole 51.
(B) In each of the above embodiments, the second wiring hole foaming material 92 is directly attached around the wiring hole 52 inside or outside the transom light 40, similarly to the first wiring hole foaming material 91. .. Further, in this case, the foaming material 92 for the second wiring hole of each of the above embodiments may be further attached to the surface of the second regulating member 102 on the side of the wiring hole 52.
(C) Instead of or in addition to the inner foam material 93 of each of the above embodiments, the inner foam material 93 is attached to the lower surface of the first flat plate 103A of the inner regulation member 103.
(D) The outer foaming material 94 is omitted in each of the above embodiments.
(E) In addition to or in place of the first foaming material 95 and the second foaming material 96 in the first embodiment, at least one of the first foaming material 95 and the second foaming material 96 is combined with the combined side regulating member 104. It is attached to the flat plate portion 104A.
(F) In the second embodiment, similarly to the first wiring hole foaming material 91, the third wiring hole foaming material 97 is placed inside or outside the transom light 40 around the wiring hole 54. Install directly. Further, in this case, the foaming material 97 for the third wiring hole of the second embodiment may be further attached to the surface of the third regulating member 105 on the side of the wiring hole 54.
(G) In place of or in addition to the convex foam material 98 of the second embodiment, the convex foam material 98 is attached to the lower surface of the lower wall 106B of the reinforcing member 106.
(H) Instead of or in addition to the end foaming material 99 of the second embodiment, it is attached to the lower surface of the first flat plate 103A of the inner regulating member 103.

(Modification 2)
In each of the above embodiments, the first regulating member 101 may be fixed to the front wall 42 via bolts. Further, the second regulating member 102 may be fixed to the bottom wall 43 via bolts. That is, the fire door 1 of this modified example does not have the core material 49.

(Modification 3)
In the first embodiment, the support member provided on the transom light 40 and supporting the inspection cover 48 from the front side may be formed separately from the combined side regulation member 104. In this case, for example, the combined side regulating member 104 is arranged below the support member.

(Modification example 4)
In the first embodiment, at least one of the first foam material 95 and the second foam material 96 may be changed to a shape that does not follow the uneven shape of the combined portion 80, such as a linear shape extending in the front-rear direction ZC. good.

(Modification 5)
In the second embodiment, the reinforcing member 106 and the regulating member that regulates the expansion of the convex foam material 98 may be individually formed. In this case, the regulating member is arranged at the same position as the lower wall 106B of the reinforcing member 106 shown in FIG. The reinforcing member 106 of the modified example is arranged above the regulating member. Further, when the regulating member is provided, the reinforcing member 106 may be omitted.

(Modification 6)
In the second embodiment, a gap may be formed in the drive direction ZB between the end portion of the inner regulating member 103 and the vertical frame 2. In this case, the end regulating member is provided separately from the inner regulating member 103 so as to fill the above interval. The end regulating member contacts each of the inner regulating member 103 and the vertical frame 2 in the driving direction ZB. The end restricting member faces the end foaming material 99 at intervals in the height direction ZA.

(Modification 7)
In each of the above embodiments, if the wiring hole 51 can be closed by expanding the first wiring hole foam material 91, the area of the first wiring hole foam material 91 is the opening area of the wiring hole 51. May be smaller than. Further, the foaming material 92 for the second wiring hole and the foaming material 97 for the third wiring hole can be similarly changed.

1 Fire door 2 Vertical frame 2A Recess 20 Sliding door (door)
20A 1st sliding door (door)
26 Convex part 27 Concave part 28 Door tip 20B Second sliding door (door)
30 Drive unit 40 Transom light 41 Storage space 48 Inspection cover (opening / closing cover)
51 Wiring hole 52 Wiring hole 53 Wiring hole 54 Wiring hole 55C Wiring hole 56C Wiring hole 61A Wiring 62C Wiring 63C Wiring 70 Smoke return 71 Smoke return piece 71A Lower horizontal piece 71B Upper vertical piece 72 Sliding door side smoke return piece (door side smoke return piece)
72A Upper horizontal piece 72B Lower vertical piece 73 Opening 80 Combined part 91 Foaming material for the first wiring hole (foaming material)
92 Foaming material for the second wiring hole (foaming material)
93 Inner foaming material (foaming material)
94 Outer foaming material 95 First foaming material (foaming material)
96 Second foaming material (foaming material)
97 Foaming material for the third wiring hole (foaming material)
98 Convex foam material (foam material)
99 Edge foaming material (foaming material)
101 First regulatory member (regulatory member)
102 Second regulatory member (regulatory member)
103 Inner regulation member (regulation member, end regulation member)
104 Combined side regulatory member (regulatory member)
105 Third regulatory member (regulatory member)
106 Reinforcing member (regulatory member)
300 Volts ZB Drive Direction ZC Front-back Direction

Claims (6)

With the door
The drive unit that drives the door and
A housing unit arranged above the door and accommodating the drive unit and the upper end portion of the door,
A foam material that is disposed in the vicinity of a gap formed inside the accommodation by the upper end of the door and expands upon heating to cover at least a portion of the gap.
The foam material is a fire door arranged on a member provided on the upper end surface or the upper end surface of the door so as to create a space on the foam material. With the door
The drive unit that drives the door and
A housing unit arranged above the door and accommodating the drive unit and the upper end portion of the door,
A foam material that is disposed in the vicinity of a gap formed inside the accommodation by the upper end of the door and expands upon heating to cover at least a portion of the gap.
The foam material is arranged on an upper end surface of the door or a member provided on the upper end surface so as to create a space on the foam material, and is provided so as to extend in the driving direction of the door. The fire door according to claim 1, wherein the foam material is provided at the upper end of the door end of the door. The door is a draw door that includes a first door and a second door.
The fire door according to any one of claims 1 to 3, wherein the foam material is provided on both the first door and the second door. The fire door according to any one of claims 1 to 4, further comprising a regulating member provided in the vicinity of the gap so as to face the gap and restrict the expansion of the foam material. A door-side smoke return piece including a horizontally extending upper horizontal piece and a lower vertical piece extending downward from the edge of the upper horizontal piece, and a lower horizontal piece and a lower horizontal piece provided below the upper horizontal piece and extending horizontally. It comprises a smoke return having a blind side smoke return piece that extends upward from the edge of the side horizontal piece and includes an upper vertical piece that faces the lower vertical piece in the anteroposterior direction.
Further, an additional foaming material other than the foaming material is provided.
The additional foam material is provided between the door-side smoke return piece and the transom-side smoke return piece.
The fire door according to any one of claims 1 to 5.

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