JP2019199797A - Fire door - Google Patents

Abstract

To provide a fire door for making a hot blast being excessively high in the temperature, hard to enter the inside of a transom.SOLUTION: A fire door 1 comprises: a transom 40 having a storage space 41 for storing a driving part 30 for driving a first sliding door 20A and a second sliding door; wiring holes 51 and 52 for expanding by being heated and communicating with the storage space 41; a first wiring hole foaming material 91, a second wiring hole foaming material 92, a first foaming material and a second foaming material 96 for blocking up an opening part on the side for communicating with the storage space 41 in a meeting part of the first sliding door 20A and the second sliding door; and a first regulation member 101, a second regulation member 102 and a meeting side regulation member 104 oppositely provided at an interval with the opening part.SELECTED DRAWING: Figure 2

Description

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

  Conventionally, fire doors installed in commercial facilities and hospital buildings are known. The fire door described in Patent Document 1 as an example thereof is a fixed wall fixed to the frontage, a door that moves relative to the fixed wall, a drive unit that drives the door, a blindness that houses the drive unit, and It is provided with a pair of vertical frames that support the eyes by being connected to the eyes.

JP-A-8-284544

  By the way, in the conventional fire door, when the door is a draw type sliding door, a gap is formed at the summing part of the two sliding doors, and when the door is a one-way sliding door, the gap is between the sliding door and the vertical frame. Is formed. These gaps are gaps formed by door-to-door rubber provided to reduce the impact between the two sliding doors or between the sliding door and the vertical frame, and the opening above the gap communicates with the inside of the eyeless. . For this reason, when a fire breaks out around the fire doors installed in the building, hot air may enter the inside of the eyes through these gaps.

  On the other hand, the hot air may pass to the side not exposed to the flame through the gap between the summing portions of the two sliding doors or the gap between the sliding door and the vertical frame. In this case, the temperature of the hot air suddenly drops when it comes into contact with the low-temperature air that is not exposed to the flame. The rise is suppressed. In addition, when hot air rises in the gap between the two sliding doors or the sliding frame and the vertical frame, the hot air does not touch the outside air that is not exposed to the flame and passes through the opening above the gap. Get inside. For this reason, hot air that maintains a high temperature may enter the interior of the eye.

  In addition, as a conventional fire door, an automatic open / close fire door in which a door is driven by a drive unit includes a sensor that detects 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 / closing operation of the door. The wiring of the sensor is drawn into the interior of the eye via, for example, a wiring hole formed without eyes. For this reason, when a fire breaks out around a fire door, there is a possibility that hot air may enter the interior through the wiring hole. In addition to the sensor wiring, a similar problem arises when wiring such as a signal line and a communication line connected to the drive unit is drawn into the interior 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 and the inside of the eyeless door, so when a fire occurs around the fire door, the hot air flows through the air passage. There is a risk of entering the inside of the eyes through. In addition, about the subject regarding the hole for wiring, it is thought that the same problem will arise about the fire door which is not restricted to a sliding door but has an open door or a folding door.

  Then, an object of this invention is to provide the fire door which a hot air whose temperature is excessively high does not enter easily inside.

  [1] A fire door according to an aspect of the present invention includes a door, a drive unit that drives the door, a housing space that houses the drive unit, an invisible member disposed above the door, A foaming material that expands and closes an opening on the side communicating with the housing space in the air passage that communicates with the housing space, and a regulating member that is provided to face the opening at an interval. Is provided.

  According to this configuration, when a fire occurs around the fire door, the foamed material is heated and expands, so that the opening of the air passage communicating with the accommodation space is closed. For this reason, it is possible to suppress hot air having an excessively high temperature from entering the housing space. In addition, when the foam material expands, the restricting member receives the foam material, thereby restricting the expansion of the foam material in the portion facing the opening. Thereby, since the density of the part which opposes the opening part in a foam material becomes higher than the density of the other part of a foam material, it suppresses that a hot air leaks from the foam material to the accommodation space side, and enters into the accommodation space. Can do.

  [2] According to one aspect dependent on the fire door, the door includes a first sliding door and a second sliding door that are of a draw type, and the air passage is formed between the first sliding door and the second sliding door. Including a gap formed in the summoning portion, the opening is a portion opening upward in the gap, and the regulating member is disposed above the air passage, and the opening and The foam material is provided between the summing unit and the regulating member.

  According to this configuration, when the foamed material is heated and expanded, the opening above the gap between the first sliding door and the second sliding door that becomes the opening of the air passage is closed by the foamed material. For this reason, it can suppress that the hot air which entered into the clearance gap between a 1st sliding door and a 2nd sliding door rises, and enters into accommodation space. In addition, at the portion where the opening above the gap between the first sliding door and the second sliding door communicates with the accommodating space, the expansion is blocked by the foaming material in a state where the expansion of the foaming material is restricted by the regulating member. Is done. For this reason, since the density of the foam material in the part which connects the opening part above the clearance gap between the 1st sliding door and the 2nd sliding door, and the accommodation space increases, hot air leaks out from the foam material to the accommodation space side and accommodates it. Entering the space can be suppressed.

  [3] According to an embodiment dependent on the fire door, the foam material includes a first foam material supported from below by the summing portion on the first sliding door side, and the calling on the second sliding door side. And a second foam material supported from below by the mating portion.

  According to this configuration, since the foam material is located on both sides of the opening portion above the gap between the summing portions of the first sliding door and the second sliding door serving as the opening portion of the air passage, when the foam material expands, the opening portion It becomes easy to block. For this reason, the density of the foam material which closes the opening portion 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, each foaming material is supported from below by the summing unit, whereby each foaming material can be prevented from being peeled off from the summing unit by its own weight.

  [4] According to one aspect dependent on the fire door, the summing portion is formed on one of the first sliding door and the second sliding door and protrudes toward the other, and the first sliding door And a recess formed in the other of the second sliding doors, into which the projection can enter, and each of the first foam material and the second foam material follows the uneven shape of the summing portion. Shape.

  According to this configuration, since the foam material is attached along the uneven shape of the summing portion of the first sliding door and the second sliding door, the summing of the first and second sliding doors in which the foam material becomes the opening of the air passage. It can arrange | position close to the opening part above the clearance gap between parts. For this reason, a foaming material expand | swells also with respect to the shape of the complicated opening part of a summoning part, and can fully block | close an opening part.

  [5] According to an embodiment subordinate to the fire door, the restricting member is configured such that the foaming material and the restricting member are restricted when the first sliding door and the second sliding door extend upward due to thermal expansion. It arrange | positions in the position which can block | close the space between members.

In order to restrict the expansion of the foamed material and increase the density of the foamed material, it is preferable that the regulating member is disposed near the foamed material. For this reason, it is conceivable that the restricting member is disposed near the summoning portion above the summing portion.
On the other hand, each sliding door extends upward due to thermal expansion. For this reason, when a regulating member is arranged near the summoning part above the summing part, it may interfere with the regulating member when each sliding door extends upward due to thermal expansion, and the regulating member may be bent. .
Under such circumstances, the inventor of the present application uses the restricting member at a position where the restricting member can be disposed close to the summing portion in that state, based on the state where each sliding door extends upward due to thermal expansion. I found out that to arrange.
And by arrange | positioning a control member like the structure of [5], since the expansion | swelling upward of the foam material heated and expanded is controlled by a control member, the density of the foam material which obstruct | occludes an opening part is raised. In addition, it is possible to prevent the regulating member from bending due to interference between the regulating member and the summing unit.

  [6] According to an embodiment dependent on the fire door, the frame further includes a vertical frame that supports the seamless door, the door is a one-way sliding door, and a door tip of the sliding door is formed on the vertical frame. The air passage is a gap formed between the door of the sliding door and the concave portion of the vertical frame in the driving direction of the sliding door, and the opening is It is formed so as to open toward the upper side of the air passage, the restricting member is arranged at an interval above the opening, and the foam material is formed in the sliding door in a fully closed state. It is provided between the door tip and the restriction member.

  According to this configuration, when the foam material is heated and expanded, the opening portion above the gap between the sliding door and the vertical frame recess that becomes the opening portion of the air passage is closed by the foam material. For this reason, it can suppress that the hot air which entered into the clearance gap between the door tip of a sliding door, and the recessed part of a vertical frame raises, and enters into accommodation space. In addition, since the density of the foam material is increased by the regulating member at the portion where the gap between the door tip of the sliding door and the recess of the vertical frame communicates with the housing space, hot air leaks from the foam material to the housing space side. Can be prevented from entering the housing space.

  [7] According to one aspect dependent on the fire door, the foam material is supported from below by the door end of the sliding door.

  According to this configuration, since the foam material is supported from below by the door of the sliding door, the foam material is peeled off from the portion where the foam material is attached due to the weight of the foam material due to the aging of the foam material. Can be suppressed.

  [8] According to an embodiment subordinate to the fire door, the restriction member can block the space between the sliding door and the restriction member when the sliding door extends upward due to thermal expansion. It is arranged in the 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, similarly to the effect of [5] above. The density of the foam material that closes the opening can be increased, and the restriction member and the sliding door can interfere with each other, thereby preventing the restriction member from being bent.

  [9] According to an embodiment subordinate to the fire door, the regulating member is between the plain and the sliding door at an end portion adjacent to the vertical frame in the driving direction of the sliding door than the sliding door. And further including an end regulating member disposed at an upper interval, wherein the end regulating member is in contact with the vertical frame in the driving direction of the sliding door, and the foam material is formed with the end regulating member and the An end foam material provided between the sliding door and the door tip is further included.

For example, when the regulating member is accommodated in the recessed portion of the vertical frame, the regulating member contributes to increasing the density of the foam material that closes the gap between the recessed portion of the vertical frame and the portion of the sliding door that enters the recessed portion. 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 concave portion of the vertical frame and the door end of the sliding door. In addition, the foam may not be able to close the gap between the portion other than the concave portion of the vertical frame and the door tip of the sliding door.
Therefore, according to the configuration of [9], when the end foam material is heated and expanded, the gap between the portion other than the concave portion of the vertical frame and the door end of the sliding door is closed by the end foam material. For this reason, it can suppress that the hot air which entered into the clearance gap between parts other than the recessed part of a vertical frame, and the door-end of a sliding door rises, and enters into accommodation space. In addition, in the portion that communicates the gap between the portion other than the concave portion of the vertical frame and the door tip of the sliding door and the accommodation space, the end portion regulating member regulates the upward expansion of the end foam material. The density of the end foam material is increased. For this reason, it can suppress that a hot air leaks from the edge part foam material to the accommodation space side, and enters into the accommodation space.

  [10] According to one embodiment dependent on the fire door, the end foam material is supported from below by the door end of the sliding door.

  According to this configuration, since the foam material is supported from below by the door edge of the sliding door, the foam material is suppressed from being peeled off from the door edge of the sliding door by its own weight.

  [11] According to an embodiment subordinate to the fire door, the end portion restricting member is configured such that when the sliding door extends upward due to thermal expansion, the end foam material is formed between the sliding door and the end portion restricting member. It is arrange | positioned in the position which can block | close the space between.

  According to this configuration, in order to dispose the end restricting member at a position where the end restricting member can be disposed close to the upper portion of the sliding door in a state where the sliding door extends upward due to thermal expansion, Similarly to the effect, it is possible to increase the density of the end foam material that closes the opening, and it is possible to suppress the end portion regulating member from being bent due to the interference between the end portion regulating member and the sliding door.

  [12] According to one aspect dependent on the fire door, smoke air is provided in the air passage between the door and the invisible, and the smoke air is provided in the door and horizontally A door-side smoke return piece that includes an upper horizontal piece that extends and a lower vertical piece that extends downward from an edge of the upper horizontal piece; and a lower horizontal piece that is provided below the upper horizontal piece and that extends horizontally. And an invisible smoke piece including an upper vertical piece extending upward from an edge of the lower horizontal piece and opposed in the front-rear direction, and the opening includes the accommodation of the smoke smoke It is an opening on the space side, and an outer foam material is provided between the door-side smoke flake piece and the eyeless smoke flake piece, and the foam material is more than the smoke flake in the air passage. Provided on the accommodation space side, provided between the door and the invisible Includes an inner foam was, the regulating member, the than the inner foam material in the transom arranged above includes an inner regulating member facing the inner foam material.

  According to this configuration, for example, in the initial stage of a fire, when the outer foam material is heated and expanded, the gap in the air passage away from the invisible portions is closed, and then the door extends upward due to thermal expansion. The inner foam material is heated to expand, thereby closing a gap in an invisible portion in the air passage. Thus, since the air passage can be blocked by the foam material at two locations 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 aspect dependent on the fire door, the outer foam material is supported from below by the lower horizontal piece of the blind 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, since the outer foamed material is supported from below by the lower horizontal piece and the inner foamed material is supported from below by the upper horizontal piece, each foaming material is prevented from being peeled off from smoke by its own weight. be able to.

  [14] According to an embodiment dependent on the fire door, the involuntarily formed wiring hole through which the wiring connected to the drive unit passes, and the air passage includes the wiring hole. The opening is an opening of the wiring hole, the restricting member is provided to face the wiring hole at a distance, and the foam material includes the wiring hole and the restricting member. Between.

  According to this configuration, when the foam material is heated, the restriction member restricts the expansion of the foam material to the side opposite to the wiring hole side. Therefore, the foam material expands toward the wiring hole. It becomes easy. For this reason, it becomes easy to block | close the hole for wiring with a foaming material.

  [15] According to an embodiment subordinate to the fire door, the restricting member is disposed in the accommodation space, and the foam material is attached to the surface of the restricting member on the wiring hole side. It is done.

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

  [16] According to one embodiment dependent on the fire door, the foam material is opposed to the wiring hole and has an area larger than an opening area of the wiring hole.

For example, if the foam material is formed in an annular shape surrounding the wiring hole, when the foam material is heated, the foam material does not expand to the center of the ring, or even if the foam material expands to the center of the ring There is a possibility that the density of the foam material in the center of the ring facing the hole is lowered. 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 foam material is heated and expanded, the foam 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 blocked.

  [17] According to one aspect dependent on the fire door, the insulative further includes an opening / closing cover for opening / closing the accommodation space, and the restricting member supports the opening / closing cover.

  According to this structure, the number of parts of a fire door can be reduced compared with the structure which formed the supporting member which supports an opening / closing cover separately from the control member.

  [18] According to one aspect dependent on the fire door, the invisible member is connected to the vertical frame by a bolt, and the regulating member is sandwiched between the vertical frame and the invisible member, and the vertical frame is It is the reinforcement member to support.

  According to this structure, compared with the structure which forms a reinforcement member separately from a control member, the number of parts of a fire door can reduce, and the attachment operation | work of a control member and a reinforcement member can be reduced.

  [19] According to one aspect dependent on the fire door, the inner regulating member includes the end regulating member.

  According to this structure, compared with the case where an inner side control member and an edge part control member are formed separately, the number of parts of a fire door can be reduced.

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

The front view which shows the external appearance of the fire door of 1st Embodiment. Sectional drawing which follows the D2-D2 line | wire of FIG. (A) Rear view of a part of the eyeless, (b) Plan view of a part of the eyeless. The perspective view of the sliding door of FIG. (A) Partial cross-sectional view of the eyeless before exposure to flame, (b) Partial cross-sectional view of the eyeless after exposure to flame. (A) Partial cross-sectional view of the eyeless before exposure to flame, (b) Partial cross-sectional view of the eyeless after exposure to flame. (A) Partial cross-sectional view of the eyeless before exposure to flame, (b) Partial cross-sectional view of the eyeless after exposure to flame. (A) Partial cross-sectional view of the eyeless before exposure to flame, (b) Partial cross-sectional view of the eyeless after exposure to flame. The front view which shows the external appearance of the fire door of 2nd Embodiment. Sectional drawing which follows the D10-D10 line | wire of FIG. FIG. 10 is a perspective sectional view of the sliding door and the vertical frame of FIG. 9. Sectional drawing of the sliding door of FIG. 9, and a vertical frame. (A) A schematic front view of a sliding door and a part of eyeless before being exposed to a flame, (b) A schematic front view of a part of a sliding door and an eyeless after being exposed to a flame. About the fire door of a modification, (a) Partial cross-sectional view of an eyeless, (b) Partial back view of an eyeless.

(First embodiment)
Hereinafter, with reference to FIGS. 1-8, the fire door of 1st Embodiment is demonstrated. 2 to 8, the foam material is shown by shading for convenience. As shown in FIG. 1, the fire door 1 of the first embodiment is a draw-type fire door.

  As shown in FIG. 1, the fire door 1 has a pair of vertical frames 2 arranged at intervals in the longitudinal direction of a rectangular frontage 200 formed in a building, and above the pair of vertical frames 2. It is arranged and has an invisible eye 40 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. An accommodation space 41 is formed inside the mesh 40.

  Between the pair of vertical frames 2, two fixed walls 10 and a first sliding door 20 </ b> A and a second sliding door 20 </ b> B that move along a direction in which the two fixed walls 10 are arranged are provided. The two fixed walls 10 are spaced apart from each other to form an entrance / exit between the two fixed walls 10. Each sliding door 20 </ b> A, 20 </ b> B is disposed on the back side of the fixed wall 10 in the front-rear direction ZC (see FIG. 2) of the fire door 1. Each sliding door 20A, 20B is 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 include an open door or a folding door instead of the sliding door.

  The fixed wall 10 is disposed between the hollow vertical center 11 extending in the height direction ZA and between the central stand 11 and the vertical frame 2, and the opening / closing direction of each sliding door 20 </ b> A, 20 </ b> B (hereinafter “drive direction ZB”). And a heat resistant glass 13 supported by the vertical frame 2, the neutral stand 11, and the baseboard 12.

  20A of 1st sliding doors are the heat resistant glass 21, the door end side vertical gutter 22 which supports one side part of the heat resistant glass 21, the door bottom side vertical gutter 23 which supports the other side part of the heat resistant glass 21, An upper rod 24 supporting the upper part of the heat-resistant glass 21 and a lower rod 25 supporting the lower part of the heat-resistant glass 21 are provided. The first sliding door 20A is suspended from a traveling rail (not shown) disposed in the accommodation space 41 of the invisible 40 via a first door hanger 110 having a door, and is slidable in the driving direction ZB by the first door hanger 110. It is supported. The second sliding door 20B has the same configuration. The door hanger from which the second sliding door 20B is suspended is referred to as a second door hanger 120.

  A drive unit 30 that drives the first sliding door 20 </ b> A and the second sliding door 20 </ b> B is disposed in the accommodation space 41 of the seamless 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, thereby opening and closing the entrance / exit between the two fixed walls 10. .

  The drive unit 30 is disposed at a distance from the drive sprocket 32 in the drive direction ZB, and the drive sprocket 32 connected to the output shaft of the electric motor 31, the output shaft of the electric motor 31 and a reduction gear (not shown). The driven sprocket 33 is provided. The drive unit 30 further includes a chain 34 that is 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 having different movement directions. The first portion 34 </ b> A and the upper collar 24 of the first sliding door 20 </ b> A are connected via a first door hanger 110. The second portion 34B and the upper collar 24 of the second sliding door 20B are connected via a second door hanger 120. When 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, the first sliding door 20A and the second sliding door 20B are opened and closed. It is to be noted that, in addition to the drive unit 30, the automatic door for moving the sliding door 20 in the closing direction 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. A closing device (not shown) is arranged.

  The fire door 1 further includes a plurality of sensors that detect a moving body and a stationary body around the first sliding door 20A and the second sliding door 20B. The plurality of sensors include an invisible mounting type sensor 61, three front side photoelectric sensors 62, and three back side photoelectric sensors 63 attached to the front side and the back side of the nose 40. In the following description, among the spaces defined by the fire door 1, the space facing the front surface of the fixed wall 10 and each sliding door 20A, 20B is referred to as an outdoor space, and the back surface of the fixed wall 10 and each sliding door 20A, 20B. The space that faces is called indoor space.

The seamless mounting sensor 61 is, for example, a near-infrared reflective sensor, and is mounted in the center of the driving direction ZB of the seamless 40.
The three front side photoelectric sensors 62 are sensors that detect a moving body and a stationary body existing in the outdoor space. Each front side photoelectric sensor 62 includes a projector 62A that outputs light, and a light receiver 62B that receives the light output by the projector 62A. The three projectors 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 light receivers 62B are attached to the neutral stand 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 light projector 62A and each light receiver 62B are opposed to each other in the driving direction ZB.

  The three back side photoelectric sensors 63 are sensors that detect a moving body and a stationary body existing in the indoor space. Each backside photoelectric sensor 63 includes a projector 63A that outputs light, and a light receiver 63B that receives the light output by the projector 63A. The three projectors 63A are attached to the vertical frame 2 on the first sliding door 20A side, and are arranged side by side along the height direction ZA. The three light receivers 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 projector 63A and each light receiver 63B are opposed to each other in the driving direction ZB.

With reference to FIG. 2, the internal structure of the seamless 40 will be described. In FIG. 2, for simplification of the drawing, a region where the drive unit 30 is arranged is indicated by a two-dot chain line.
As shown in FIG. 2, the invisible eye 40 is formed in a box shape whose back side is open. Specifically, the invisible eye 40 includes a front wall 42 that constitutes the front surface of the invisible eye 40, a bottom wall 43 that constitutes the lower surface of the invisible eye 40, an upper wall 44 that constitutes the upper surface of the invisible eye 40, and the invisible eye 40. Side wall 45 constituting the end face in the longitudinal direction. The bottom wall 43 extends to the rear side end of the fixed wall 10. A lower fixed wall 43 </ b> A that extends downward is formed at the rear side end of the bottom wall 43. The upper wall 44 extends to the back side from the first sliding door 20A. An upper fixed wall 44 </ b> A that extends downward is formed at the rear side end of the upper wall 44.

  The intangible 40 has a pair of side walls 45 connected to the vertical frame 2 and bolts 300, and suspended by anchors (not shown). A makeup cover 46 that covers the front wall 42 from the front side is attached to the invisible eye 40. An inspection cover 48 is attached to the upper fixed wall 44 </ b> A of the seamless 40 via a hinge 47 so that the opening of the seamless 40 can be opened and closed. An L-shaped core material 49 is arranged on the front side and the lower side in the accommodation space 41 of the invisible eye 40. The core material 49 is made 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 and closes the accommodation space 41.

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

  As shown in FIG. 1 and FIG. 2, wiring holes 52 for inserting the wirings 62 </ b> C of the three projectors 62 </ b> A of the front photoelectric sensor 62 are formed in the lower part of the mesh 40. The wiring hole 52 is a through hole that penetrates the bottom wall 43 and the core material 49 of the invisible 40 in the height direction ZA, and communicates with the accommodation space 41. That is, the wiring hole 52 becomes a part of an air passage communicating with the accommodation space 41. The opening on the housing space 41 side in the wiring hole 52 is an opening on the side communicating with the housing space 41 in the air passage. Further, a wiring hole (not shown) for inserting the wirings 62D of the three light receivers 62B of the front photoelectric sensor 62 is formed in the lower part of the seamless door 40 on the second sliding door 20B side. The wiring hole is a through hole that penetrates the bottom wall 43 and the core member 49 of the invisible 40 in the height direction ZA, and communicates with the accommodation space 41. That is, the wiring hole into which the wiring 62 </ b> D 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 becomes an opening on the side communicating with the accommodation space 41 in the air passage.

  The wiring 62C of the three light projectors 62A passes through the neutral 11 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. Yes. The wiring 62D of the three light receivers 62B passes through 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. Yes.

  In the side wall 45 on the first sliding door 20 </ b> A side in the seamless 40, wiring holes 53 for inserting the wirings 63 </ b> C of the three projectors 63 </ b> A of the back side photoelectric sensor 63 are formed. The wiring hole 53 passes through the side wall 45 of the seamless 40 in the driving direction ZB. In addition, wiring holes (not shown) for inserting the wirings 63D of the three light receivers 63B of the back side photoelectric sensor 63 are formed in the side wall 45 on the second sliding door 20B side in the seamless 40.

  The wiring 63C of the three projectors 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 20 </ b> A and the seamless 40. The smoke return 70 is also provided in the air passage between the second sliding door 20 </ b> B and the seamless 40. The smoke return 70 is located below the mesh 40 and between the upper end of the fixed wall 10 and the upper end of the first sliding door 20A in the front-rear direction ZC. The smoke return 70 includes an eyeless smoke return piece 71 provided in the eyeless 40 and a sliding door side smoke return piece 72 provided in the first sliding door 20A. The eyeless smoke return piece 71 includes 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 includes an upper horizontal piece 72A that extends horizontally in the front-rear direction ZC and a lower vertical piece 72B that extends downward from the edge of the upper horizontal piece 72A. Each vertical piece 71B, 72B is arrange | positioned so that it may mutually be parallel between the front-back direction ZC of the fixed wall 10 and 20 A of 1st sliding doors. The upper vertical piece 71B is arranged at a distance from the back side of the lower vertical piece 72B. The lower vertical piece 72B is disposed at a distance from the lower fixed wall 43A of the bottom wall 43 of the eyeless 40 on the back side 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, a summing unit 80 is configured by the door of the first sliding door 20A and the door of the second sliding door 20B. The summing unit 80 includes a convex portion 26 formed at the door tip of the first sliding door 20A and a concave portion 27 formed at the door tip of the second sliding door 20B and into which the convex portion 26 can enter. The summing unit 80 may have a configuration in which the concave portion 27 is formed at the door tip of the first sliding door 20A and the convex portion 26 is formed at the door tip of the second sliding door 20B.

  In the summoning unit 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 are not in contact in the driving direction ZB. That is, when the fire door 1 is in a fully closed state, a gap (between the door tip of the first sliding door 20A and the door tip of the second sliding door 20B in the driving direction ZB is caused by a rubber for impact reduction (not shown). Hereinafter, a “gap between the summing portions 80”) is formed. The gap of the summing portion 80 is formed over the entire sliding doors 20A and 20B in the height direction ZA. The gap of the summing unit 80 becomes a part of an air passage communicating with the accommodation space 41. A portion that opens upward in the gap of the summing portion 80 is an opening that communicates with the accommodation space 41 in the air passage.

  By the way, as shown in FIG. 2, the mesh 40 includes a wiring hole 51 of the seamless sensor 61, a wiring hole (wiring hole 52) of the front photoelectric sensor 62, a smoke return 70, and An air passage communicating with the accommodation space 41 such as a gap formed in the summing unit 80 is formed. Through these air passages, the air in the outdoor space communicates with the interior (the accommodation space 41) of the invisible eye 40 without touching the air in the indoor space. When a fire occurs in the outdoor space, the air in the outdoor space heated by the flame may enter the accommodation space 41 through the above-described air passage as hot air. When hot air enters the accommodation space 41 without touching the air in the indoor space, the temperature of the accommodation space 41 is rapidly increased by the hot air.

  On the other hand, the wiring 40 (wiring hole 53) of the back side photoelectric sensor 63 is formed with an air passage that communicates the indoor space with the interior of the seamless 40. Then, after the air in the outdoor space touches the air in the indoor space via this air passage, the air communicates with the interior (the accommodation space 41) of the eyeless 40. In this case, since the hot air is in contact with the air in the indoor space, the temperature of the hot air is drastically reduced.

  As described above, when the hot air in the outdoor space directly enters the housing space 41 through the air passage without touching the air in the indoor space, the degree of temperature rise in the housing space 41 is determined by the hot air in the outdoor space being air. 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 is larger.

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

  As shown in FIG. 2, the passage closing structure RC <b> 1 is made of a foam material that expands when heated, so that the wiring holes 51 of the front-side unattached sensor 61 and the wiring holes 52 of the front photoelectric sensor 62 are expanded. The structure which closes is provided.

  The passage closing structure RC <b> 1 includes a first restricting member 101 disposed in the accommodation space 41. The first restricting member 101 is disposed at a position facing the opening on the accommodation space 41 side of the wiring hole 51 with an interval in the front-rear direction ZC. The first restricting member 101 is a metal fitting and is fixed to the core member 49 by a bolt 310. The first restricting member 101 is a flat plate extending in the height direction ZA, and is parallel to the front wall 42 of the eyeless 40. A first wiring hole foam material 91, which is an example of a foam material, is attached to the surface of the first regulating member 101 on the wiring hole 51 side. For this reason, the 1st control member 101 controls the expansion | swelling to the back side of the foam material 91 for 1st wiring holes.

  As the first wiring hole foam material 91, a graphite-based foam material is used. The first foam material 91 for wiring holes is opposed to the wiring hole 51 in the front-rear direction ZC, and is disposed at a distance from the back side of the wiring hole 51. As shown in FIG. 3A, the first wiring hole foam material 91 is formed in a flat plate having an area larger than the opening area of the wiring hole 51. Thereby, since the first foaming material 91 for the 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. No longer.

  Further, the passage closing structure RC1 includes a second regulating member 102 disposed in the accommodation space 41 as shown in FIG. The second restricting member 102 is disposed at a position facing the wiring hole 52 at an interval in the height direction ZA. For this reason, the second restriction member 102 is disposed in the accommodation space 41. The second restricting 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 intangible 40. 2 and 3B, the second restricting member 102 includes a first flat plate 102A in which the longitudinal direction ZC is the longitudinal direction, and a second flat plate 102B extending upward from the edge of the first flat plate 102A. And are integrally formed metal fittings. The second restricting member 102 is fixed to the core member 49 with bolts 320 on the second flat plate 102B. A second wiring hole foam material 92, which is an example of a foam material, is attached to the surface of the first flat plate 102A on the wiring hole 52 side. For this reason, the second wiring hole foaming material 92 restricts the upward expansion of the second wiring hole foaming material 92.

  The second wiring hole foaming material 92 is made of a graphite-based foaming material. The second wiring hole foam material 92 is opposed to the wiring hole 52 in the height direction ZA, and is disposed above the wiring hole 52 with a space therebetween. As shown in FIG. 3B, the second wiring hole foam material 92 is formed in a flat plate having an area larger than the opening area of the wiring hole 52. Thereby, since the second foaming material 92 for the wiring hole is provided between the wiring hole 52 and the second restricting member 102, the second restricting member 102 directly faces the wiring hole 52. No longer. As shown in FIGS. 3A and 3B, the shape of the first wiring hole foam 91 and the shape of the second wiring hole foam 92 in the front view are quadrangular. May be a circle or a polygon other than a rectangle.

  Further, as shown in FIG. 2, the passage closing structure RC <b> 2 includes a structure that closes the opening 73 on the housing space 41 side in the air passage of the smoke flue 70 with a foam material that expands when heated.

  Specifically, an inner foam 93 is attached to the upper surface of the front side of each sliding door 20A, 20B of the upper horizontal piece 72A of the sliding door side smoke return piece 72A. 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. Thus, the inner foam material 93 is provided closer to the accommodation space 41 than the smoke return 70.

  An inner regulating member 103 is provided above the inner foam material 93 in the mesh 40 in a portion facing the inner foam material 93 in the height direction ZA. The inner regulating member 103 is a metal fitting. The inner regulating 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 joint 40 by spot welding the back surface of the lower fixed wall 43A of the bottom wall 43 in the joint 40 and the second flat plate 103B, for example. 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 each of the sliding doors 20A, 20B extends upward due to thermal expansion, and the inner foam 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 eyeless smoke 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 each sliding door 20A, 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 foamed material 94 faces the lower vertical piece 72B of the sliding door side smoke return piece 72 in the height direction ZA. Each of the outer foam material 94 and the inner foam material 93 is made of a graphite foam material.

As shown in FIG. 4, the passage closing structure RC <b> 3 includes a structure that closes an upper opening in the gap of the summing unit 80 with a foam material that expands when heated.
The passage closing structure RC3 is a first foam material 95 supported from below by a door on the first sliding door 20A side which is a summing part on the first sliding door 20A side, and a summing part on the second sliding door 20B side. A second foam material 96 is provided which is supported from below by the door on the second sliding door 20B side. The 1st foam 95 is attached to the upper surface of the part corresponding to the door tip of the 1st 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 1st sliding door 20A. The 2nd foam 96 is attached to the upper surface of the part corresponding to the door tip of the 2nd sliding door 20B in 72A of upper side horizontal pieces 72A of the sliding door side smoke return piece 72 attached to the upper surface of the 2nd sliding door 20B. Each of the first foam material 95 and the second foam material 96 is made of a graphite foam material.

  As shown in FIG. 4, the first foam material 95 and the second foam material 96 have a shape along the uneven shape of the summing portion 80. Specifically, the first foam material 95 is composed of two linear foam 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 foam materials are attached so as to follow the recess 27 of the second sliding door 20B. Further, the front-side end portions of the first foam material 95 and the second foam material 96 are adjacent to the back surface side and the inner foam material 93 relative to the inner foam material 93 in the front-rear direction ZC.

  Above the first foam material 95 and the second foam material 96, a summing side regulating member 104, which is an example of a regulating member, is provided. The summing-side regulating member 104 faces the opening above the gap of the summing portion 80 and the foam materials 95 and 96 at an interval in the height direction ZA. Thus, the foam materials 95 and 96 are provided between the summing unit 80 and the summing side regulating member 104. The summing-side regulating member 104 includes a flat plate portion 104A extending along the driving direction ZB and the front-rear direction ZC, and a support portion 104B having a substantially U-shaped cross section at the end of the flat plate portion 104A on the inspection cover 48 (see FIG. 2) side. And are integrally formed metal fittings. The flat plate portion 104A is formed in a rectangle having a longitudinal direction ZC in plan view. The flat plate portion 104A covers the summing portion 80 in the driving direction ZB and the front-rear direction ZC. As shown in FIG. 2, the summing-side regulating member 104 is disposed 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 in the height direction ZA of the flat plate portion 104A of the summing side regulating member 104 is higher than the upper horizontal piece 72A of the sliding door side smoke return piece 72 when each sliding door 20A, 20B extends upward due to thermal expansion. And each foam material 95,96 is set to the position which can block | close the clearance gap between flat plate part 104A and 72 A of upper side horizontal pieces. 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, with reference to FIG. 2 and FIGS. 4-8, the effect | action and effect of the fire door 1 are demonstrated.
As shown in FIG. 2, when a fire occurs in the outdoor space of the fire door 1 installed in the building, the fire door 1 is heated by flame and hot air. In this case, each of the passage closing structures RC1 to RC3 closes the passage as follows.

  That is, as shown in FIG. 5A, in the passage closing structure RC1, when the first wiring hole foaming material 91 is heated by heating the mesh 40, it is shown in FIG. 5B. In this way, the first wiring hole foaming material 91 expands and closes the gap between the first regulating member 101 and the front wall 42 of the intangible 40 and the wiring hole 51. For this reason, hot air is prevented from entering the accommodation space 41 through the wiring hole 51. Further, since the first restricting member 101 restricts the expansion of the first wiring hole foaming material 91 toward the back side, the first wiring hole foaming material 91 expands toward the front wall 42. For this reason, the density of the foam material 91 for 1st wiring holes which closes the clearance gap between the 1st control member 101 and the front wall 42 and the wiring hole 51 becomes high. Thereby, it is suppressed that the hot air from the wiring hole 51 leaks out from the first wiring hole foaming material 91 toward the housing space 41 and enters the housing space 41.

  Further, as shown in FIG. 6A, in the passage closing structure RC1, when the second wiring hole foaming material 92 is heated by heating the intangible 40, it is shown in FIG. 6B. As described above, the second wiring hole foaming material 92 expands and closes the gap between the second regulating member 102 and the core material 49 and the wiring hole 52. For this reason, hot air is prevented from entering the accommodation space 41 via the wiring hole 52. In addition, since the second restricting member 102 restricts the expansion of the second wiring hole foaming material 92 to the upper side, the second wiring hole foaming material 92 expands toward the core member 49. For this reason, the density of the gap between the second regulating member 102 and the core member 49 and the second wiring hole foaming material 92 that closes the wiring hole 52 is increased. Thereby, it is suppressed that the hot air from the wiring hole 52 leaks out from the second wiring hole foam material 92 toward the housing space 41 and enters the housing space 41.

  Further, as shown in FIG. 7A, in the passage closing structure RC2, when the outer foam material 94 is heated by heating the first sliding door 20A and the mesh 40, the outer foam material 94 expands. The air passage on the inlet side of the smoke return 70 is closed. At this time, since the lower horizontal piece 71A of the eyeless smoke return piece 71 restricts the downward expansion of the outer foam material 94, the outer foam material 94 expands upward. For this reason, the air passage on the inlet side of the smoke return 70 is effectively blocked. For this reason, hot air is prevented from entering the smoke return 70.

  The first sliding door 20A and the seamless 40 are further heated, so that the first sliding door 20A extends upward due to the thermal expansion of the first sliding door 20A. At this time, as shown in FIG. 7B, the gap between the inner foam material 93 and the inner regulating member 103 is reduced by the upward extension of the first sliding door 20A. 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. Thereby, 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 regulating member 103 is smaller than the air passage of the smoke return 70. In such a state, the inner foam material 93 is heated, the inner foam material 93 expands, and the air passage on the outlet side of the smoke return 70 is closed. And since the upper horizontal piece 72A of the sliding door side smoke return piece 72 regulates the downward expansion of the inner foam material 93, the inner foam material 93 expands upward. For this reason, the density of the inner side foam material 93 which obstruct | occludes between the upper horizontal piece 72A of the sliding door side smoke return piece 72 and the inner side control member 103 becomes high. Thereby, 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 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. To close the gap. Thus, in the smoke return 70, since it is the structure which suppresses hot air from entering the accommodation space 41 by the outer foam material 94 and the inner foam material 93, hot air is introduced into the accommodation space 41 through the smoke return 70. Intrusion is further suppressed.

  As shown in FIG. 8A, in the passage closing structure RC3, when the first sliding door 20A is heated and expanded upward by the thermal expansion of the first sliding door 20A, 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 summing side regulating member 104 is reduced. Then, the first foam material 95 and the second foam material 96 shown in FIG. 4 are heated to expand each foam material 95, 96, and the door tip of the first sliding door 20A and the door tip of the second sliding door 20B. 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 upward expansion is performed. The upward movement of each foam material 95, 96 is restricted by the flat plate portion 104A of the summing side restricting member 104. For this reason, the density of each foam material 95 and 96 between the height direction ZA of 72 A of upper side horizontal pieces 72A of the sliding door side smoke return piece 72, and the flat plate part 104A of the summing side control member 104 becomes high. Further, the foam materials 95 and 96 defined by the flat plate portion 104A of the summing-side regulating member 104 enter a gap in the driving direction ZB between the door tip of the first sliding door 20A and the door tip of the second sliding door 20B. As described above, the foam materials 95 and 96 suppress the hot air from entering the accommodation space 41 directly from the gap in the driving 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 back side of each sliding door 20A, 20B through the gap in the driving direction ZB between the door tip of the first sliding door 20A and the door tip of the second sliding door 20B. is there. However, since the hot air that has escaped to the back side of each sliding door 20A, 20B comes into contact with the indoor space, the temperature rapidly decreases. In this state, even if hot air enters the accommodation space 41, the temperature rise of the accommodation space 41 is suppressed.

  Thus, the fire door 1 blocks the air passage where 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 by the passage blocking structures RC1 to RC3. For this reason, since hot air is prevented from entering the housing space 41, the temperature in the housing space 41, and thus the temperature of the drive unit 30, is unlikely to increase.

The fire door 1 of the first embodiment further has the following effects.
(1) The first foam material 95 and the second foam material 96 are attached to the upper surface of the upper horizontal piece 72 </ b> A of the sliding door side smoke return piece 72 in the summing unit 80. That is, the first foam material 95 is supported from below by the summing portion 80 on the first sliding door 20A side, and the second foam material 96 is supported from below by the summing portion 80 on the second sliding door 20B side. According to this structure, since each foam material 95 and 96 is located in the both sides of the opening part above the clearance gap between the 1st sliding door 20A and the 2nd sliding door 20B used as the opening part of an air passage, each foam material 95 , 96 expands, it becomes easier to close the opening. For this reason, the density of each foam material 95,96 which obstruct | occludes an opening part becomes high, and it can suppress further that a hot air leaks from each foam material 95,96. In addition, the foam materials 95 and 96 are prevented from being peeled off from the upper horizontal piece 72A by their own weight.

  (2) The first foam material 95 and the second foam material 96 are attached along the uneven shape of the summing portion 80. For this reason, each foam material 95 and 96 can be arrange | positioned adjacent to the opening part above the clearance gap between the 1st sliding door 20A and the 2nd sliding door 20B used as the opening part of an air path. For this reason, each foam material 95 and 96 expand | swells also with respect to the shape of a complicated opening part, and can fully block | close an opening part.

(3) The summing-side regulating member 104 is close to each foam material 95, 96 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. It is preferable to arrange | position. For this reason, it is conceivable that the summing-side restricting member 104 is disposed near the summing unit 80 above the summing unit 80.
On the other hand, the first sliding door 20A and the second sliding door 20B extend upward due to thermal expansion. For this reason, when the summing-side regulating member 104 is disposed near the summing unit 80 above the summing unit 80, the summing-side regulating member 104 is used when the sliding doors 20A and 20B extend upward due to thermal expansion. And the summing-side regulating member 104 may be bent.
Under such circumstances, the inventor of this application uses the state where each sliding door 20A, 20B is extended upward due to thermal expansion as a reference, and brings the summing-side regulating member 104 close to the summing portion 80 in that state. It has been found that the summing-side regulating member 104 is arranged at a position where it can be arranged.
Based on such knowledge, the summing-side regulating member 104 has the foaming materials 95 and 96 that meet the summing portion 80 and the summing side when the first sliding door 20A and the second sliding door 20B extend upward due to thermal expansion. The space between the regulating member 104 and the restricting member 104 is disposed at a position where it can be closed. For this reason, each foam material 95, 96 is heated to expand, and the space between the summing unit 80 and the summing side regulating member 104 is closed and the foaming material 95 is summed by the summing side regulating member 104. , 96 is restricted, so that the density of each foam material 95, 96 that closes the opening can be increased. In addition, it is possible to suppress bending of the summing-side regulating member 104 due to interference between the summing-side regulating member 104 and the summing portion 80.

  (4) The outer foam material 94 is supported from below by the lower horizontal piece 71A of the eyeless smoke 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 structure, it can suppress that each foaming material 93 and 94 peels from each horizontal piece 71A, 72A with the dead weight. Therefore, the outer foam material 94 is dropped from the lower horizontal piece 71A and the air passage of the smoke return 70 cannot be blocked, and the inner foam material 93 is dropped from the upper horizontal piece 72A and the inner regulating member 103 and the upper horizontal piece are removed. It is possible to prevent the gap between 72A and the opening 73 from being blocked.

  (5) The first restricting member 101 is disposed in the accommodating space 41, and the first wiring hole foam material 91 is attached to the surface of the first restricting member 101 on the wiring hole 51 side. As a result, the first wiring hole foam material 91 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. For this reason, it can suppress that a hot air hits the 1st control member 101 directly, and can control that the temperature in the storage space 41 rises by heating the 1st control member 101. The same effect can be obtained with the second restricting member 102.

  (6) The first wiring hole foam material 91 is opposed to the wiring hole 51 and has an area equal to or larger than the opening area of the wiring hole 51. For this reason, the wiring hole 51 can be sufficiently closed.

  (7) The summing side regulating member 104 supports the inspection cover 48 from the front side. For this reason, the number of parts of the fire door 1 can be reduced compared with the structure which formed the support member which supports the inspection cover 48 separately with the summing side control member 104. FIG.

  (8) The first restricting member 101 is fixed to the core member 49 by the bolt 310 after the wiring 61 </ b> A of the seamless mounting type sensor 61 is drawn into the accommodation space 41 from the wiring hole 51. For this reason, it is possible to prevent the first restricting member 101 from interfering with the wiring work of the wiring 61A.

  (9) The second restricting member 102 is fixed to the core member 49 by the bolt 320 after the wiring 62C of the projector 62A of the front photoelectric sensor 62 is drawn into the accommodating space 41 from the wiring hole 52. For this reason, it is possible to prevent the second restricting member 102 from interfering with the wiring work of the wiring 62C.

(Second Embodiment)
With reference to FIGS. 9-13, the fire door 1 of 2nd Embodiment is demonstrated. Hereinafter, a different point from the fire door 1 of 1st Embodiment is demonstrated in detail, and about the structure which is common in the fire door 1 of 1st Embodiment, the description is abbreviate | omitted using the same code | symbol. As shown in FIG. 9, the fire door 1 of the second embodiment is a one-way fire door 1. For this reason, the dimension of the driving direction ZB of the seamless 40 is smaller than the dimension of the driving direction ZB of the seamless 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 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 driving unit 30 or a folding door driven by the driving unit 30 instead of the sliding door.

  As shown in FIG. 10, a wiring hole 54 is formed on the side wall 45 of the seamless wall 40 on the front wall 42 side and above, 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 a passage closing structure RC4 similarly to the passage closing structure RC1.

  Specifically, the passage closing structure RC4 includes a third restricting member 105 that is an example of a restricting member that faces the wiring hole 54 with a gap in the driving direction ZB. The third restricting 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 in the driving direction ZB from the edge of the first flat plate 105A are integrally formed. is there. The third restricting member 105 is fixed by fastening the second flat plate 105 </ b> B to the front wall 42 of the eyeless 40 with a bolt 330. The first flat plate 105A is a rectangle having a longitudinal direction ZC in the side view. The first flat plate 105A faces the wiring hole 54 at an interval in the driving direction ZB. A third wiring hole foaming material 97 which is an example of a foaming material is attached to the surface of the first flat plate 105A on the wiring hole 54 side. That is, the third wiring hole foaming material 97 is provided between the wiring hole 54 and the third regulating member 105. As the third wiring hole foaming material 97, a graphite-based foaming material is used. The third wiring hole foaming material 97 is formed in a flat plate shape parallel to the side wall 45 and having a longitudinal direction ZC. The third wiring hole foam material 97 has an area larger than the opening area of the wiring hole 54.

  Further, on the side wall 45 on the sliding door 20 side in the seamless 40, wiring holes (not shown) for inserting the wirings 63 </ b> D of the three light receivers 63 </ b> B of the back side photoelectric sensor 63 are provided on the front wall 42 side and above. Is formed. Similarly to the wiring hole 54, the wiring hole 54 is provided with a passage closing structure RC4.

11 and 12 show the configuration of the vertical frame 2 on the sliding door 20 side and the door tip 28 of the sliding door 20.
As shown in FIG. 11, the vertical frame 2 is formed with a recess 2 </ b> A 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 in a fully closed state. As shown in FIG. 12, a gap is formed between the door tip 28 of the sliding door 20 and the recess 2 </ b> A by a door stop rubber (not shown) for shock reduction. This gap is a part of the air passage communicating with the accommodation space 41. The opening above the gap is an 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 blocks the air passage between the clearance 28 between the door tip 28 of the sliding door 20 and the recess 2 </ b> A and the accommodation space 41 (see FIG. 10). Structure RC5 is provided. The passage closing structure RC5 includes a structure that closes the opening above the gap between the door tip 28 of the sliding door 20 and the recess 2A with a foam material that expands when heated.

  Specifically, 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 is formed on the upper surface of the portion corresponding to the door tip 28 of the sliding door 20 along the shape of the door tip 28. A convex foam material 98, which is an example of a foam 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.

  A reinforcing member 106, which is an example of a regulating member, is provided above the sliding door 20 in the vertical frame 2. The reinforcing member 106 is fitted into the recess 2 </ b> A of the vertical frame 2. For this reason, the reinforcing member 106 is sandwiched between the vertical frame 2 and the mesh 40 in the driving direction ZB. The reinforcing member 106 supports the vertical frame 2, and suppresses deformation of the vertical frame 2 when the intangible 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 a side view in the front-rear direction ZC. The reinforcing member 106 is a metal fitting in which an upper wall 106A and a lower wall 106B that are parallel to each other at a distance in the height direction ZA and a connecting wall 106C that connects 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 on the inner regulating member 103 side of the upper wall 106A and the lower wall 106B in the driving direction ZB. The connecting wall 106C is a flat plate extending in the height direction ZA and the front-rear direction ZC. An insertion hole 106D for inserting the bolt 300 is formed in the connecting wall 106C. The position in the height direction ZA of the lower wall 106B is the same as the position in the height direction ZA of the first flat plate 103A of the inner regulating member 103. The lower wall 106B is opposed to the convex foam material 98 with a gap in the height direction ZA. The lower wall 106B is opposed to the opening above the gap between the door tip 28 of the sliding door 20 and the recess 2A with a gap therebetween. When the sliding door 20 extends upward due to thermal expansion, the reinforcing member 106 can block the space between the upper horizontal piece 72 </ b> A of the sliding door side smoke return piece 72 and the lower wall 106 </ b> B of the reinforcing member 106. It is arranged in the 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 in the fully closed state.

  Further, an end foam material 99 is attached to the upper surface of the front side portion of 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. . That is, the end foam material 99 is supported from below by the door tip 28 of the sliding door 20. The end foam material 99 is disposed so as to be adjacent to the front side of the front side end portion of the convex foam material 98 and is adjacent to the inner foam material 93 in the driving direction ZB. Each of the convex foam material 98 and the end foam material 99 is a graphite foam material.

  As shown in FIG. 11, the end of the inner regulating member 103 in the driving direction ZB is in contact with the vertical frame 2 in the driving direction ZB. An end portion in the driving direction ZB of the inner regulating member 103 faces the end foam material 99 in the height direction ZA. As described above, the end foam material 99 is provided between the end portion in the driving direction ZB of the inner regulating member 103 which is an example of the end regulating member and the door tip 28 of the sliding door 20. The end portion of the inner regulating member 103 in the driving direction ZB is such that the end foam material 99 is the upper horizontal piece 72A of the sliding door side smoke return piece 72 and the inner regulating member 103 when the sliding door 20 extends upward due to thermal expansion. It arrange | positions in the position which can block | close the space between 1 flat plate 103A.

  As shown in FIG. 13 (a), when a fire occurs in the outdoor space of the fire door 1 and the sliding foam 20 and the vertical frame 2 are heated to heat the convex foam 98, FIG. 13 (b) ), The sliding door 20 extends upward and the convex foam material 98 expands to close 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. For this reason, it is suppressed that the hot air which entered into the clearance gap between the door tip 28 of the sliding door 20 and the recessed part 2A enters the accommodation space 41 through the opening part above the clearance gap. That is, the hot air that has entered the gap between the door 28 of the sliding door 20 and the recess 2A is prevented from directly entering the accommodation space 41 without contacting 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 28 of the sliding door 20 and the concave portion 2A. The density of 98 increases. For this reason, it is possible to prevent hot air from leaking out of 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 accommodated in the concave portion 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 concave portion 2A of the vertical frame 2 and the door tip 28 of the sliding door 20. On the other hand, it does not contribute sufficiently 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 inner regulating member 103 in the driving direction ZB covers a portion on the front side of the door 28 of the sliding door 20 from above, and more than the door 28 of the sliding door 20. An end foam material 99 is provided on the front side portion. Thereby, when the end foam material 99 is heated by heating the sliding door 20 and the vertical frame 2, the end foam 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 28 of the sliding door 20 and the vertical frame 2 is opened above the gap between the front side portion of the door 28 of the sliding door 20 and the vertical frame 2. The entry into the accommodation space 41 through the portion is suppressed. That is, the hot air that has entered the gap between the front side portion of the door 28 of the sliding door 20 and the vertical frame 2 is prevented from directly entering the accommodation space 41 without contacting the indoor space. Further, since the upward expansion of the end foam material 99 is regulated by the end of the inner regulating member 103 in the driving direction ZB, the gap between the front side portion of the door tip 28 of the sliding door 20 and the vertical frame 2 is closed. The density of the end foam material 99 is increased. For this reason, it is possible to suppress the hot air from leaking from the end foam 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 according to the fire door 1 of the first embodiment.
(10) The reinforcing member 106 restricts the deformation of the vertical frame 2 and the upward expansion of the convex foam material 98 when the joint 40 and the vertical frame 2 are connected by the bolt 300. It also serves as a function. For this reason, the number of parts of the fire door 1 is reduced as compared with a configuration in which the regulating member that regulates 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 perform the attaching work of both the regulating member and the reinforcing member 106, the work for assembling the fire door 1 can be reduced.

  (11) The reinforcing member 106 has 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 when the sliding door 20 extends upward due to thermal expansion. It is arranged at a position where it can be closed. For this reason, when the convex foam material 98 is heated, it expands and 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 and the door 28 of the sliding door 20 are closed. The density of the convex foam 98 that closes the gap between the vertical frame 2 and the recess 2A can be increased. In addition, the reinforcement member 106 can be prevented from bending due to the door tip 28 of the sliding door 20 interfering with the reinforcement member 106.

  (12) The convex foam material 98 and the end foam material 99 are supported from below by the door 28 of the sliding door 20. For this reason, it can suppress that the convex foam material 98 and the edge part foam material 99 peel from the upper horizontal piece 72A (door tip 28 of the sliding door 20) by dead weight.

  (13) The end portion of the inner regulating member 103 in the driving direction ZB is such that when the sliding door 20 extends upward due to thermal expansion, the end foam material 99 becomes the upper horizontal piece 72A of the sliding door side smoke return piece 72 and the inner regulating member 103. It arrange | positions in the position which can block | close the space between 103 A of this 1st flat plate. For this reason, when the end foam material 99 is heated, the space between the upper horizontal piece 72 </ b> A and the first flat plate 103 </ b> A of the inner regulating member 103 is closed, and the inner regulating member 103 opens the door of the sliding door 20. The density of the end foam material 99 that closes the gap between the front side portion of the tip 28 and the recess 2A of the vertical frame 2 can be increased. In addition, it is possible to prevent the inner regulating member 103 from being bent when the door 28 of the sliding door 20 interferes with the first flat plate 103 </ b> A of the inner regulating member 103.

(Modification)
The description regarding each said embodiment is an illustration of the form which the fire door according to this invention can take, and does not intend restrict | limiting the form. The fire door according to the present invention can take a form in which, for example, modifications of the embodiments described below and at least two modifications not contradicting each other are combined.

(Modification 1)
For example, the foams may be arranged as shown in the following (a) to (h).
(A) In each of the above embodiments, as shown in FIG. 14A, the first wiring hole foam material 91 is directly attached around the wiring hole 51 inside or outside the mesh 40. In this case, as shown in FIG. 14B, the first restricting member 101 is preferably opposed to the wiring hole 51 and the first wiring hole foam 91 in the driving direction ZB. In this case, the first wiring hole foam material 91 of each of the above embodiments may be further attached to the surface of the first restricting member 101 on the wiring hole 51 side.
(B) In each of the above-described embodiments, the second wiring hole foam material 92 is directly attached around the wiring hole 52 inside or outside the mesh 40, similarly to the first wiring hole foam material 91. . In this case, the second wiring hole foam material 92 of each of the above embodiments may be further attached to the surface of the second restricting member 102 on the wiring hole 52 side.
(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 103 </ b> A of the inner regulating member 103.
(D) In the above embodiments, the outer foam material 94 is omitted.
(E) Instead of or in addition to the first foam material 95 and the second foam material 96 in the first embodiment, at least one of the first foam material 95 and the second foam material 96 is added to the summing side regulating member 104. It is attached to the flat plate portion 104A.
(F) In the second embodiment, similarly to the first wiring hole foam material 91, the third wiring hole foam material 97 is disposed around the wiring hole 54 inside or outside the mesh 40. Install directly. In this case, the third wiring hole foaming material 97 of the second embodiment may be further attached to the surface of the third regulating member 105 on the wiring hole 54 side.
(G) Instead 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 foam material 99 of the second embodiment, the inner regulating member 103 is attached to the lower surface of the first flat plate 103A.

(Modification 2)
In each said embodiment, you may fix the 1st control member 101 to the front wall 42 via a volt | bolt. Further, the second restricting member 102 may be fixed to the bottom wall 43 via a bolt. That is, the fire door 1 of this modification does not have the core material 49.

(Modification 3)
In the first embodiment, a support member that is provided in the mesh 40 and supports the inspection cover 48 from the front side may be formed separately from the summing-side regulating member 104. In this case, for example, the summing side regulating member 104 is disposed below the support member.

(Modification 4)
In the first embodiment, even if at least one of the first foam material 95 and the second foam material 96 is changed to a shape that does not follow the uneven shape of the summing portion 80 such as a linear shape extending in the front-rear direction ZC, for example. 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 formed separately. In this case, the regulating member is disposed at the same position as the lower wall 106B of the reinforcing member 106 shown in FIG. The modified reinforcing member 106 is disposed above the restricting member. Further, when the restriction member is provided, the reinforcing member 106 may be omitted.

(Modification 6)
In the second embodiment, an interval may be formed in the driving direction ZB between the end 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 gap. 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 foam 99 with an interval 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. Further, the second wiring hole foaming material 92 and the third wiring hole foaming material 97 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 2nd sliding door (door)
30 Driving part 40 Seamless 41 Storage space 48 Inspection cover (open / close 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 Flour 71 Unintentional Smoke Flour 71A Lower Horizontal Fragment 71B Upper Vertical Fragment 72 Sliding door smoke return piece (door side smoke return piece)
72A Upper horizontal piece 72B Lower vertical piece 73 Opening portion 80 Summing portion 91 First foaming material for wiring hole (foaming material)
92 Second foam material for wiring hole (foam material)
93 Inside foam material (foam material)
94 Outside foam material 95 First foam material (foam material)
96 Second foam material (foam material)
97 Third foam material for wiring holes (foam material)
98 Convex foam (foam)
99 End foam material (foam material)
101 First regulating member (regulating member)
102 Second regulating member (regulating member)
103 inner regulating member (regulating member, end regulating member)
104 Summoning side regulating member (regulating member)
105 Third restriction member (regulation member)
106 Reinforcing member (regulating member)
300 Volts ZB Drive direction ZC Front-back direction

(1) A fire door that solves the above problems includes a drive unit that drives a door, and a drive unit that accommodates the drive unit and communicates between the drive unit that is disposed above the door and the interior and exterior of the drive unit. A communication part that draws the wiring connected to the part into the invisible side, and a foam material that is provided in at least one of the communication part and the vicinity of the communication part and expands by heating to close the communication part.
(2) According to one form subordinate to the fire door, the communication portion is provided as a hole provided in the wall constituting the invisible.
(3) According to one form subordinate to the fire door, the foam material is attached around the opening of the seamless inner side of the communication portion.
(4) According to one form subordinate to the fire door, there is provided a regulating member provided to face the opening on the inner side of the communication portion.
(5) According to one form subordinate to the fire door, the foam material is attached to a surface of the restriction member facing the communication portion.
(6) According to one form subordinate to the fire door, the foam material has an area larger than an opening area of the opening of the communication portion.
[1] The reference fire door has a door, a drive unit that drives the door, and a housing space that houses the drive unit, and is heated by being heated and undisposed above the door. A foaming material that expands and closes an opening on the side communicating with the housing space in the air passage that communicates with the housing space, and a regulating member that is provided to face the opening with a space therebetween.

Claims (19)

Door,
A drive unit for driving the door;
Having an accommodation space for accommodating the drive unit, and being arranged above the door;
A foam material that expands by being heated and closes the opening on the side communicating with the housing space in the air passage communicating with the housing space;
A fire door comprising: a regulating member provided to face the opening with a gap. The door has a first sliding door and a second sliding door that are of a draw type,
The air passage includes a gap formed in a summing portion between the first sliding door and the second sliding door,
The opening is a portion that opens upward in the gap,
The restriction member is disposed above the air passage, and is provided to face the opening with a gap therebetween.
The fire door of Claim 1. The said foaming material is provided between the said summing part and the said control member. The foam material includes a first foam material supported from below by the summing portion on the first sliding door side, and a second foam material supported from below by the summing portion on the second sliding door side. The fire door according to claim 2. The summing part is formed on one of the first sliding door and the second sliding door and is formed on the other of the first sliding door and the second sliding door, and the convex part is formed on the other of the first sliding door and the second sliding door. A recess that can enter,
4. The fire door according to claim 3, wherein each of the first foam material and the second foam material has a shape along an uneven shape of the summing portion. The restricting member is disposed at a position where the foaming material can close a space between the summing portion and the restricting member when the first sliding door and the second sliding door extend upward due to thermal expansion. The fire door according to any one of claims 2 to 4. Further comprising a vertical frame that supports the eyeless,
The door is a one-way sliding door;
The sliding door end can enter a recess formed in the vertical frame,
The air passage is a gap formed between the door end of the sliding door and the recess of the vertical frame in the driving direction of the sliding door,
The opening is formed to open upward of the air passage,
The restricting member is arranged at an interval above the opening,
The fire door according to claim 1, wherein the foam material is provided between a door tip of the sliding door and the regulating member when the sliding door is in a fully closed state. The fire door according to claim 6, wherein the foam material is supported from below by a door tip of the sliding door. The said regulating member is arrange | positioned in the position which can block | close the space between the said sliding door and the said regulating member when the said sliding door expand | extends upwards by thermal expansion. Fire door. The regulating member includes an end regulating member arranged at an interval above the sliding door at an end adjacent to the vertical frame in the driving direction of the sliding door between the plain and the sliding door. In addition,
The end regulating member is in contact with the vertical frame in the driving direction of the sliding door;
The fire door according to any one of claims 6 to 8, wherein the foam material further includes an end foam material provided between the end regulating member and a door tip of the sliding door. The fire door according to claim 9, wherein the end foam material is supported from below by a door tip of the sliding door. The end portion restricting member is disposed at a position where the end foam material can close a space between the sliding door and the end portion restricting member when the sliding door extends upward due to thermal expansion. The fire door according to 9 or 10. Smoke return is provided in the air passage between the door and the invisible;
The smoke return is provided on the door, and includes a door-side smoke return piece including an upper horizontal piece extending horizontally and a lower vertical piece extending downward from an edge of the upper horizontal piece; A lower horizontal piece that extends horizontally from an edge of the lower horizontal piece, and includes a lower smoke piece that includes the lower vertical piece and an upper vertical piece that opposes in the front-rear direction. And
The opening is an opening on the housing space side of the smoke return,
Between the door side smoke flake piece and the eyeless side smoke flake piece, an outer foam material is provided,
The foam material is provided on the housing space side of the smoke passage in the air passage, and includes an inner foam material provided between the door and the invisible,
The fire door according to any one of claims 1 to 11, wherein the restriction member includes an inner restriction member that is provided above the inner foam material and is opposed to the inner foam material. The outer foam material is supported from below by the lower horizontal piece of the eyeless smoke return piece,
The fire door according to claim 12, wherein the inner foam material is supported from below by the upper horizontal piece of the door-side smoke return piece. The intangible is formed with a wiring hole through which the wiring connected to the driving unit passes,
The air passage includes the wiring hole,
The opening is an opening of the wiring hole,
The restricting member is provided to face the wiring hole with an interval therebetween,
The fire door according to claim 1, wherein the foam material is provided between the wiring hole and the regulating member. The restricting member is disposed in the blind accommodation space,
The fire door according to claim 14, wherein the foam material is attached to a surface on the wiring hole side in the restriction member. The fire door according to claim 15, wherein the foam material is opposed to the wiring hole and has an area equal to or larger than an opening area of the wiring hole. The intangible further includes an opening / closing cover for opening and closing the accommodation space,
The fire door according to any one of claims 2 to 4, wherein the restriction member supports the opening and closing cover. The eyes are connected to the vertical frame by bolts,
The fire door according to any one of claims 6 to 11, wherein the restricting member is a reinforcing member that is sandwiched between the vertical frame and the intangible and supports the vertical frame. The fire door according to claim 12, wherein the inner regulating member includes the end regulating member.