JP6705626B2 - Fire door - Google Patents

Description

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

BACKGROUND ART Fire doors installed in buildings such as commercial facilities and hospitals have been conventionally known. A fire door described in Patent Document 1 as an example thereof has a form as a sliding door including two sliding doors driven by a driving force. The sliding door is composed of glass, a door tail side vertical frame that supports one side portion of the glass in the driving direction of the sliding door, and a door tip side vertical frame that supports the other side portion of the glass in the driving direction of the sliding door. Equipped with.

JP-A-8-284544

In the above fire door, when the sliding door is closed, the door-side vertical frame is in contact with the door-side vertical frame of the other sliding door, which causes a fire in the building in which the fire door is installed. Also, the surface of the other sliding door of the vertical frame that is in contact with the vertical frame of the front side is less likely to be exposed to flames. For this reason, one door-end vertical frame is less likely to be deformed in a direction in which it approaches the other door-end vertical frame, in other words, in a direction in which it separates from the glass supported by one door-end vertical frame. Therefore, it is difficult for the glass to come off the vertical frame on the door end side.

On the other hand, since the door sill side vertical frame moves in the direction approaching the front with the opening motion of the sliding door and comes into contact with the vertical frame, the object cannot be arranged on the movement path of the door sill side vertical frame. For this reason, when the sliding door is closed, there are no objects around the vertical frame on the door-end side, so if a fire occurs in the building where the fire door is installed, many parts are exposed to flames. .. Therefore, the door sill side vertical frame is likely to be deformed in a direction away from the glass supported thereby, and the glass may come off the door sill side vertical frame.

When the fire door is a single sliding door, when the sliding door is closed, the vertical frame of the door front side is supported by the vertical frame attached to the frontage, so the vertical frame of the vertical frame of the door front side is supported. The surface supported by the frame is less susceptible to flame. Further, since the vertical frame restricts the deformation in the direction away from the glass supported by the door-end vertical frame, the glass is less likely to come off the door-end vertical frame. However, for the door sill vertical frame, due to the same reason as in the case of the draw door, the door sill vertical frame is easily deformed in the direction away from the glass supported by the door sill vertical frame, and the glass may come off the door sill vertical frame. There is.

An object of the present invention is to provide a fire door in which glass is hard to come off.

(1) A fire door according to an aspect of the present invention is a fire door including a sliding door, and the sliding door supports a side of one of the glass and the glass in the driving direction of the sliding door. A side vertical frame, and a door tip side vertical frame that supports the other side portion of the glass in the driving direction of the sliding door, the heat capacity of the door butt side vertical frame is that of the door front side vertical frame. Greater than heat capacity.

According to this fire door, since the heat capacity of the door-end side vertical frame is larger than the heat capacity of the door-end side vertical frame, when a fire occurs in the building where the fire door is installed, the door-end side vertical frame is It is difficult for the temperature to rise. Therefore, the door sill side vertical frame is suppressed from being thermally expanded and largely deformed in the direction away from the glass, so that the glass is unlikely to come off.

(2) According to one aspect subordinate to the fire door, the volume of the door end side vertical frame is larger than the volume of the door tip side vertical frame, so that the heat capacity of the door bottom side vertical frame is the door end. Larger than the heat capacity of the side vertical frame.

According to this fire door, in order to make the heat capacity of the door-end side vertical frame larger than the heat capacity of the door-end side vertical frame, the volume of the door-end side vertical frame is made larger than the volume of the door-end side vertical frame. It is used. Therefore, it is possible to unify the materials of the vertical frame on the door end side and the vertical frame on the door tail side.

(3) According to one aspect subordinate to the fire door, the door end side vertical frame includes a hollow main body, and a connecting core member arranged inside the main body. Includes a pair of walls arranged at intervals, and the connecting core member is connected to one wall and the other wall of the pair of walls.

According to this fire door, since the main body is hollow, the weight of the sliding door can be reduced. Further, since the connecting core material that connects the pair of walls is arranged inside the main body portion, the heat capacity of the door sill side vertical frame becomes large. Therefore, it is possible to suppress the deformation of the door sill side vertical frame due to thermal expansion, and it is more difficult for the glass to come off.

(4) According to one aspect subordinate to the fire door, the pair of walls are a first wall and a second wall extending in the driving direction of the sliding door.
Since the first wall or the second wall extending in the driving direction of the sliding door faces the outdoor space or the indoor space partitioned by the fire door, the flame is generated when a fire occurs in the building in which the fire door is installed. Easily exposed to. According to this fire door, since the connecting core member is connected to the first wall and the second wall, the strength of the portion of the door end side vertical frame that is easily deformed by thermal expansion is increased.

(5) According to one aspect subordinate to the fire door, the connecting core member is connected to the first wall, and is connected to the first contact portion extending in the driving direction of the sliding door and the second wall. A second contact portion that extends in the drive direction of the sliding door, and a connecting portion that connects the first contact portion and the second contact portion.

According to this fire door, since the first contact portion and the second contact portion have a shape extending in the driving direction of the sliding door, the contact area between the first contact portion and the first wall and the second contact portion The contact area between the contact portion and the second wall can be increased. Therefore, the strength of the door sill side vertical frame can be further increased, and the door sill side vertical frame can be effectively suppressed from being largely deformed by thermal expansion.

(6) According to one aspect subordinate to the fire door, the main body portion includes a third wall extending in the front-rear direction of the sliding door and supporting one side portion of the glass, and the connecting portion. Are in contact with the third wall.

According to this fire door, since the third wall supporting the glass and the connecting portion are in contact with each other, it is possible to prevent the third wall from being thermally expanded and largely deformed. Therefore, the glass is more difficult to come off. The front-rear direction of the sliding door is the indoor/outdoor direction defined by the fire door in the building.

(7) According to one aspect subordinate to the fire door, the main body portion includes a fourth wall arranged at a distance from the third wall, and inside the main body portion, the fourth wall is provided. 4 further includes an auxiliary core member arranged at a position facing the wall.

According to this fire door, since the auxiliary core material is provided, the heat capacity of the door sill side vertical frame can be further increased. Therefore, it is possible to suppress the deformation of the door sill side vertical frame due to thermal expansion, and it is more difficult for the glass to come off.
(8) According to one aspect subordinate to the fire door, the dimension of the auxiliary core material is shorter than the dimension of the fourth wall in the front-rear direction of the sliding door, and the auxiliary core material is arranged in the front-rear direction of the sliding door. One end in the direction contacts one of the first wall and the second wall, and the other end in the front-rear direction of the sliding door is the other of the first wall and the second wall. And are spaced apart.

According to this fire door, since one end of the auxiliary core is in contact with the first wall or the second wall, the position of the auxiliary core inside the main body is likely to be stable.
(9) According to one aspect subordinate to the fire door, the glass is supported by the door-end side supported portion supported by the door-end side vertical frame and the door-end side vertical frame. The dimension of the door rear side supported portion is longer than the dimension of the door front side supported portion in the drive direction of the sliding door, including the door front side supported portion.

According to this fire door, the dimension of the door-end side supported portion in the driving direction of the sliding door is longer than the dimension of the door-end side supported portion, that is, the swallowing amount of the glass of the door-end side vertical frame is the door-end vertical direction. It is larger than the amount of glass in the frame. For this reason, even if the door-end side vertical frame is deformed in the direction away from the glass, it is easy to maintain the state in which the glass is supported by the door-end side vertical frame.

(10) According to one aspect subordinate to the fire door, an upper frame that is connected to the door-end side vertical frame and the door-end side vertical frame and supports the upper part of the glass, the door-end side vertical frame, and the A lower frame that is connected to the door-end-side vertical frame and supports the lower part of the glass; the glass is an upper frame supported part supported by the upper frame; and a lower frame supported by the lower frame. The dimension of the upper frame supported portion is longer than the dimension of the lower frame supported portion in the height direction of the fire door, including the frame supported portion.

According to this fire door, the size of the upper frame supported portion is longer than the size of the lower frame supported portion, that is, the amount of the upper frame glass swallowed is larger than the amount of the lower frame glass swallowed. Therefore, the glass is supported by the upper frame even if the upper frame moves away from the glass due to thermal expansion of the door end side vertical frame and the door end side vertical frame in the height direction of the fire door. The condition is easy to maintain.

According to the fire door of the present invention, the glass does not easily come off.

The front view of the appearance of the fire door of the embodiment. FIG. 2 is a perspective view of a vertical frame of the sliding door of FIG. Sectional drawing which follows the D3-D3 line of FIG. Sectional drawing which follows the D4-D4 line of FIG. Sectional drawing which follows the D5-D5 line of FIG.

(Embodiment)
As shown in FIG. 1, a draw-type fire door 1 includes a pair of vertical frames 2 arranged to face each other in a longitudinal direction of a frontage 500 formed in a building, and above the pair of vertical frames 2. The seamless frame 200 is arranged and fixedly supported by the pair of vertical frames 2. The fire door 1 further includes two fixed walls 10 and two sliding doors 20 that move along the direction in which the two fixed walls 10 are arranged. The blind 200 accommodates the drive unit 100 that moves the sliding door 20, and the driving unit 100 moves the sliding door 20 in the drive direction ZB, so that the two sliding doors 20 are connected to each other between the two fixed walls 10. Open and close. Note that the fire door 1 may be a pulling door type including one fixed wall 10 and one sliding door 20 driven by the driving unit 100.

The vertical frame 2 is made of iron or stainless steel. The fixed wall 10 includes a neutral 11 extending in the height direction ZA of the fire door 1, and a skirting board 12 arranged between the neutral 11 and the vertical frame 2 and extending in the drive direction ZB of the sliding door 20. The vertical frame 2, the neutral 11, the skirting board 12, and the seamless 200 support the glass 13. As the glass 13, for example, a low-expansion fireproof glass whose heat resistance is improved by heat-treating borosilicate glass is used.

The sliding door 20 is hung on a traveling rail (not shown) arranged in the seamless 200 via door hangers 310 and 320 having door rollers, and is slidably supported in the drive direction ZB. The sliding door 20 includes a glass 30, a door end side vertical frame 40 that supports one side of the glass 30 in the driving direction ZB of the sliding door 20, and the other of the glass 30 in the driving direction ZB of the sliding door 20. The vertical frame 80 on the door-end side supporting the side portion of the. The sliding door 20 further includes an upper frame 91 and a lower frame 92 that are arranged between the door end side vertical frame 40 and the door front side vertical frame 80 and extend in the driving direction ZB of the sliding door 20.

As the glass 30, for example, low expansion fireproof glass whose heat resistance is improved by heat-treating borosilicate glass is used. The door end side vertical frame 40, the door end side vertical frame 80, the upper frame 91, and the lower frame 92 are made of iron or stainless steel.

The upper frame 91 supports the upper portion of the glass 30, and is connected to the door-end side vertical frame 40 and the door-end side vertical frame 80. The lower frame 92 supports the lower portion of the glass 30, and is connected to the door-end side vertical frame 40 and the door-end side vertical frame 80.

The drive unit 100 is spaced from the electric motor 110, the drive sprocket 120 connected to the output shaft of the electric motor 110 via a speed reducer (not shown), and the drive sprocket 120 in the drive direction ZB of the sliding door 20. The driven sprocket 130 is provided. The drive unit 100 further includes a chain 140 wound around a drive sprocket 120 and a driven sprocket 130. The chain 140 has a first portion 141 and a second portion 142 whose moving directions are different from each other. The first portion 141 and the upper frame 91 of one of the two sliding doors 20 are connected via a first door hanger 310. The second portion 142 and the other upper frame 91 of the two sliding doors 20 are connected to each other via a second door hanger 320. The driving force of the electric motor 110 is transmitted to the door hangers 310 and 320 via the chain 140, so that the sliding door 20 opens and closes. In addition, in the blind 200, in addition to the drive unit 100, an automatic system for moving the sliding door 20 in the closing direction when a fire is detected in the building in which the fire door 1 is installed is detected. A closure device (not shown) is arranged.

As shown in FIG. 2 or FIG. 3, the door sill side vertical frame 40 includes a hollow main body 50, a connecting core 60 arranged inside the main body 50, and a rectangular parallelepiped auxiliary core. The material 70 is provided.

The main body portion 50 includes a pair of walls 51 and 52 arranged at intervals in the front-rear direction ZC of the sliding door 20 and a pair of walls 53 and 54 arranged at intervals in the driving direction ZB of the sliding door 20. Equipped with. In addition, in FIG. 3, a part of the fixed wall 10 is schematically shown by a chain double-dashed line. The front-rear direction ZC of the sliding door 20 is an indoor/outdoor direction defined by the fire door 1 in the building.

The first wall 51 has a rectangular shape when viewed from the front, the lateral direction thereof coincides with the driving direction ZB of the sliding door 20, and the longitudinal direction thereof coincides with the height direction ZA of the sliding door 20.
The second wall 52 has a rectangular shape when viewed from the front, and the lateral direction thereof coincides with the driving direction ZB of the sliding door 20 and the longitudinal direction thereof coincides with the height direction ZA of the sliding door 20.

The third wall 53 has a rectangular shape when viewed from the front, the lateral direction thereof coincides with the front-rear direction ZC of the sliding door 20, and the longitudinal direction thereof coincides with the height direction ZA of the sliding door 20. The third wall 53 has a recess 53A that is recessed toward the fourth wall 54 in the drive direction ZB of the sliding door 20. The recessed portion 53A supports a door tail side supported portion 31 (see FIG. 3) which is one side portion of the glass 30 in the driving direction ZB of the sliding door 20.

The fourth wall 54 has a rectangular shape when viewed from the front, and the lateral direction thereof coincides with the front-rear direction ZC of the sliding door 20 and the longitudinal direction thereof coincides with the height direction ZA of the sliding door 20.
The thickness of each member forming the door end side vertical frame 40 including the first wall 51, the second wall 52, the third wall 53, and the fourth wall 54 is the same as that of the door end side vertical frame 80. Since the thickness is greater than the thickness of each of the constituent members, the door end side vertical frame 40 has a larger volume than the door tip side vertical frame 80. For this reason, the heat capacity of the door-end side vertical frame 40 can be made larger than the heat capacity of the door-end side vertical frame 80 without changing the material of iron or stainless steel.

The connecting core material 60 includes a first contact portion 61 connected to the first wall 51, a second contact portion 62 connected to the second wall 52, and a first contact portion 61 and a first contact portion 61. It includes a connecting portion 63 connecting the two contact portions 62. The connecting core 60 is made of iron.

As shown in FIG. 2, the first contact portion 61 has a rectangular shape when viewed from the front, the lateral direction thereof coincides with the driving direction ZB of the sliding door 20, and the longitudinal direction thereof coincides with the height direction ZA of the sliding door 20. To do. In the height direction ZA of the sliding door 20, the dimension of the first contact portion 61 and the dimension of the first wall 51 are substantially equal. The first contact portion 61 is welded to the inner surface of the first wall 51.

The second contact portion 62 has a rectangular shape when viewed from the front, and the lateral direction thereof coincides with the driving direction ZB of the sliding door 20 and the longitudinal direction thereof coincides with the height direction ZA of the sliding door 20. In the height direction ZA of the sliding door 20, the dimension of the second contact portion 62 and the dimension of the second wall 52 are substantially equal. The second contact portion 62 is welded to the inner surface of the second wall 52.

The connecting portion 63 has a rectangular shape when viewed from the front and is formed integrally with the first contact portion 61 and the second contact portion 62. The connecting portion 63 is welded to the inner surface of the portion of the third wall 53 where the recess 53A is formed. The lateral direction of the connecting portion 63 matches the front-rear direction ZC of the sliding door 20, and the longitudinal direction thereof matches the height direction ZA of the sliding door 20. In the height direction ZA of the sliding door 20, the dimensions of the connecting portion 63 and the dimensions of the first contact portion 61 and the second contact portion 62 are substantially equal.

The auxiliary core member 70 has a rectangular shape when viewed from the front, and the lateral direction thereof coincides with the front-rear direction ZC of the sliding door 20 and the longitudinal direction thereof coincides with the height direction ZA of the sliding door 20. The auxiliary core member 70 is made of iron and has a shorter dimension in the lateral direction than the dimension of the fourth wall 54 in the lateral direction. In the auxiliary core member 70, one end 71 in the lateral direction is in contact with the inner surface of the second wall 52, and the other end 72 in the lateral direction is spaced from the inner surface of the first wall 51. Is welded to the second wall 52 and the fourth wall 54 so as to be arranged. In the height direction ZA of the sliding door 20, the dimensions of the auxiliary core 70 and the dimensions of the first contact portion 61, the second contact portion 62, and the connecting portion 63 are substantially equal.

As shown in FIG. 3, the door end side vertical frame 80 has a hollow shape, and the end 81 closer to the door tail side vertical frame 40 in the driving direction ZB of the sliding door 20 is in the driving direction ZB of the sliding door 20. The door-end supported portion 32, which is the other side portion of the glass 30, is supported.

In the drive direction ZB of the sliding door 20, the dimension LA of the door tail side supported portion 31 is longer than the dimension LB of the door tip side supported portion 32. That is, the swallowing amount of the glass 30 of the door-end side vertical frame 40 is larger than the swallowing amount of the glass 30 of the door-end side vertical frame 80. In the state where the sliding door 20 is closed, the end 82 of the door-end side vertical frame 80 on the side opposite to the door-end side vertical frame 40 in the driving direction ZB of the sliding door 20 is provided with the door-contact rubber 400. It is in contact with the other vertical frame 80 on the door side.

As shown in FIG. 4, the glass 30 has an upper frame supported portion 33 inserted into the recess 91A of the upper frame 91 and a lower frame supported portion 34 inserted into the recess 92A of the lower frame 92. Including. In the height direction ZA of the fire door 1, the dimension LC of the upper frame supported portion 33 is longer than the dimension LD of the lower frame supported portion 34. That is, the amount of the glass 30 of the upper frame 91 swallowed is larger than the amount of the glass 30 of the lower frame 92 swallowed. The lower frame supported portion 34 is supported by a setting block 92B arranged in the recess 92A of the lower frame 92.

As shown in FIG. 5, the blind 200 includes a main case 210 that houses the drive unit 100, and an inspection cover 230 that is attached to one side wall 211 of the main case 210 via a hinge 220. .. The seamless 200 further includes a bracket 260 that is arranged below the main case 210 and is fixed in position with respect to the inspection cover 230. Note that, in FIG. 5, for simplification of the drawing, a region where the drive unit 100 is arranged in the seamless portion 200 is shown by a chain double-dashed line, and the fixed wall 10 and the sliding door 20 are not shown.

The main case 210 is made of iron, and a part of the side wall 211 is open.
The inspection cover 230 includes a cover main body 240 connected to the hinge 220, and a core member 250 arranged inside the cover main body 240.

The cover body 240 is made of stainless steel and has a rectangular shape when viewed from the front. The cover body 240 has a shape in which the lateral direction extends in the height direction ZA of the sliding door 20 and the longitudinal direction extends in the driving direction ZB of the sliding door 20 (see FIG. 1 ).

The core material 250 includes a first core material 251 arranged at a portion of the cover body 240 connected to the hinge 220, and a second core material 252 arranged at a lower edge of the cover body 240. , And a third core member 253 welded to the second core member 252.

The first core member 251 is made of iron and extends in the driving direction ZB of the sliding door 20 (see FIG. 1). The second core member 252 is made of iron and extends in the driving direction ZB (see FIG. 1) of the sliding door 20. The second core member 252 is welded to the lower edge of the cover body 240 and has a hole 252A into which the screw 270 is inserted.

The third core member 253 is made of iron and extends in the driving direction ZB (see FIG. 1) of the sliding door 20. The third core member 253 is welded to the second core member 252 and has a hole 253A into which the screw 270 is inserted.

The cover body 240 is fixed to the receiving metal fitting 260 by fastening the screw 270 inserted in the hole 252A of the second core material 252 and the hole 253A of the third core material 253 to the receiving metal fitting 260. .. The worker can open the inspection cover 230 by removing the screw 270 from the metal fitting 260 and perform maintenance of the components forming the drive unit 100 through the opening formed in the side wall 211.

The operation and effect of the fire door 1 will be described with reference to FIG.
When it is detected that a fire has occurred in the building in which the fire door 1 is installed, an automatic closing device (not shown) moves the sliding door 20 in the closing direction. When the sliding door 20 moves in the closing direction, the door-end-side vertical frame 80 of the one sliding door 20 and the door-side-side vertical frame 80 of the other sliding door 20 come into contact with each other via the door contact rubber 400.

Since the surface of the other sliding door 20 that is in contact with the sliding door-side vertical frame 80 is less likely to be exposed to flames, one of the sliding doors 20 in the driving direction ZB will have one of the sliding doors 20. Does not easily deform in a direction approaching the other door-end side vertical frame 80, in other words, in a direction away from the glass 30 supported by the one door-end side vertical frame 80. For this reason, the glass 30 is unlikely to come off from the door end side vertical frame 80.

On the other hand, since the heat capacity of the door sill 40 is larger than that of the door sill 80, when a fire occurs in the building in which the fire door 1 is installed, the temperature is higher than that of the door sill 80. Is hard to rise. For this reason, in the drive direction ZB of the sliding door 20, thermal expansion of the door-end side vertical frame 40 in the direction away from the glass 30 is suppressed, so that the glass 30 is less likely to come off the door-end side vertical frame 40.

The fire door 1 of the present embodiment further exhibits the following effects.
(1) In order to make the heat capacity of the door-end side vertical frame 40 larger than the heat capacity of the door-end side vertical frame 80, the volume of the door-end side vertical frame 40 is made larger than the volume of the door-end side vertical frame 80. It is used. Therefore, the material of the door-end side vertical frame 80 and the door-end side vertical frame 40 can be unified.

(2) Since the main body 50 has a hollow shape, the weight of the sliding door 20 can be reduced. In addition, since the connecting core member 60 that connects the pair of walls 51 and 52 is disposed inside the main body portion 50, the heat capacity of the door end side vertical frame 40 becomes large. For this reason, the deformation of the door end side vertical frame 40 due to thermal expansion can be suppressed, and the glass 30 is more unlikely to come off.

(3) Since the second wall 52 faces the outdoor space or the indoor space partitioned by the fire door 1, it is easily exposed to flames when a fire occurs in the building in which the fire door 1 is installed. In the fire door 1, since the connecting core material 60 is connected to the second wall 52 that is easily exposed to flames and the first wall 51 that is arranged at a distance from the second wall 52, The strength of the portion of the door end side vertical frame 40 that is easily deformed by thermal expansion is increased.

(4) Since the first contact portion 61 and the second contact portion 62 of the connecting core member 60 have a shape extending in the drive direction ZB of the sliding door 20, the contact between the first contact portion 61 and the first wall 51. The area and the contact area between the second contact portion 62 and the second wall 52 can be increased. Therefore, the strength of the door sill side vertical frame 40 can be further increased, and the door sill side vertical frame 40 can be effectively suppressed from being largely deformed by thermal expansion.

(5) Since the third wall 53 supporting the glass 30 and the connecting portion 63 are in contact with each other, it is possible to prevent the third wall 53 from being thermally expanded and largely deformed. Therefore, the glass 30 is less likely to come off.

(6) Since the auxiliary core member 70 is arranged inside the main body 50, the heat capacity of the door sill side vertical frame 40 can be further increased. Therefore, the deformation of the door end side vertical frame 40 due to the thermal expansion can be suppressed, and the glass is more difficult to come off.

(7) Since the fourth wall 54 and the auxiliary core member 70 are in contact with each other, it is possible to prevent the fourth wall 54 from being thermally expanded and largely deformed.
(8) Since one end 71 of the auxiliary core 70 is in contact with the second wall 52, the position of the auxiliary core 70 inside the main body 50 is likely to be stable.

(9) When the auxiliary core 70 is arranged inside the main body 50, the one end 71 of the auxiliary core 70 is arranged so as to be in contact with the second wall 52. Easy to position. Therefore, the efficiency of the work of attaching the auxiliary core member 70 is improved.

(10) Since the dimension LA of the door-end side supported portion 31 in the driving direction ZB of the sliding door 20 is longer than the dimension LB of the door-end side supported portion 32, the door-end side vertical frame 40 is separated from the glass 30. Even if the glass 30 is deformed, the state in which the glass 30 is supported by the door sill side vertical frame 40 is easily maintained.

(11) Since the dimension LC of the upper frame supported portion 33 in the height direction ZA of the fire door 1 is longer than the dimension LD of the lower frame supported portion 34, the door end side vertical frame 40 and the door tip side vertical frame 80 are Even if the upper frame 91 moves in the direction away from the glass 30 due to thermal expansion in the height direction ZA of the fire door 1, the state in which the glass 30 is supported by the upper frame 91 is likely to be maintained.

(12) Since the first core member 251 and the second core member 252 are arranged inside the cover body 240 of the inspection cover 230, the strength of the inspection cover 230 is enhanced.
(13) When the distance between the hole 253A of the second core member 252 and the receiving metal fitting 260 is long, the tip of the screw 270 may not properly reach the threaded portion of the receiving metal fitting 260. According to the fire door 1, since the third core member 253 having the hole 253A formed therein is arranged between the second core member 252 and the receiving metal fitting 260, the tip of the screw 270 is fixed through the hole 253A. It is easy to be properly guided to the receiving fitting 260. Therefore, the work of tightening the screw 270 to the receiving fitting 260 can be easily performed.

(Modification)
The above description regarding the embodiment is an example of a form that the fire door according to the present invention can take, and is not intended to limit the form. The fire door according to the present invention may take a form in which, for example, a modified example of the embodiment shown below and at least two modified examples which are not mutually contradictory are combined.

(Modification 1)
In the above-described embodiment, the configuration of the door end side vertical frame 40 may be, for example, the following (a) to (n).

(A) By forming at least one of the first wall 51, the second wall 52, the third wall 53, and the fourth wall 54 from a material having a larger specific heat than the door-end side vertical frame 80 The heat capacity of the door-end side vertical frame 40 may be larger than the heat capacity of the door-end side vertical frame 80.

(B) In the height direction ZA of the sliding door 20, the dimension of the first contact portion 61 may be shorter than the dimension of the first wall 51 or longer than the dimension of the first wall 51. .
(C) In the height direction ZA of the sliding door 20, the dimension of the second contact portion 62 may be shorter than the dimension of the second wall 52 or longer than the dimension of the second wall 52. .

(D) In the height direction ZA of the sliding door 20, the dimension of the connecting portion 63 may be longer than the dimension of the first contact portion 61 or longer than the first contact portion 61.
(E) In the height direction ZA of the sliding door 20, the dimension of the connecting portion 63 may be longer than the dimension of the second contact portion 62 or longer than the second contact portion 62.

(F) The first contact portion 61 of the connecting core material 60 may be omitted. In this case, the connecting portion 63 and the first wall 51 are in contact with each other.
(G) The second contact portion 62 of the connecting core material 60 may be omitted. In this case, the connecting portion 63 and the second wall 52 are in contact with each other.

(H) You may connect the 1st contact part 61 of the connection core material 60 and the 1st wall 51 with one or several bolts.
(I) The second contact portion 62 of the connecting core material 60 and the second wall 52 may be connected by one or a plurality of bolts.

(J) The connecting portion 63 of the connecting core material 60 may be arranged at a distance from the inner surface of the recess 53A of the third wall 53.
(K) The connecting core material 60 may be arranged so as to connect the third wall 53 and the fourth wall 54.

(L) At least one of the connecting core material 60 and the auxiliary core material 70 may be formed of a material other than iron.
(M) One end 71 of the auxiliary core material 70 may be arranged at a distance from the second wall 52, and the other end 72 may be connected to the first wall 51.

(N) The auxiliary core material 70 may be arranged with a space from the fourth wall 54.
(Modification 2)
In the above embodiment, the structure of the seamless 200 may be, for example, the following (a) to (c).

(A) At least one of the first core 251, the second core 252, and the third core 253 may be omitted.
(B) At least one of the first core 251, the second core 252, and the third core 253 may be formed of a material other than iron.

(C) The cover body 240 may be made of a material other than stainless steel.

1: Fire door 20: Sliding door 30: Glass 31: Door end side supported part 32: Door tip side supported part 33: Upper frame supported part 34: Lower frame supported part 40: Door end side vertical frame 50: Main body Part 51: 1st wall 52: 2nd wall 53: 3rd wall 54: 4th wall 60: Connection core material 61: 1st contact part 62: 2nd contact part 63: Connection part 70: Auxiliary core 71: One end 72: The other end

Claims (10)

A fire door with a sliding door,
The sliding door is a glass, a door tail side vertical frame supporting one side portion of the glass in the driving direction of the sliding door, and the other side portion of the glass in the driving direction of the sliding door. It is equipped with a vertical frame supporting the door end,
The thickness of at least a part of the wall forming the door-end side vertical frame is greater than the thickness of at least a part of the wall forming the door-end side vertical frame, and the door-end side vertical frame is formed. Based on at least one of the fact that the specific heat of at least a part of the wall is larger than the specific heat of at least a part of the wall forming the door end side vertical frame, the heat capacity of the door butt side vertical frame is the door end. Fire door that is larger than the heat capacity of the side vertical frame. Before the volume of Kitoshiri side stile is greater than the volume of the door end side stile, and that at least one member is disposed within the door trailing side stile, at least one The fire door according to claim 1, wherein the heat capacity of the door sill side vertical frame is larger than the heat capacity of the door tip side vertical frame. A fire door with a sliding door,
The sliding door is a glass, a door tail side vertical frame supporting one side portion of the glass in the driving direction of the sliding door, and the other side portion of the glass in the driving direction of the sliding door. It is equipped with a vertical frame supporting the door end,
The door-end side vertical frame includes a hollow main body, and a connecting core member arranged inside the main body,
The main body portion includes a pair of walls arranged at intervals, and a third wall extending in the front-rear direction of the sliding door to support one side portion of the glass, and the third wall Has a first portion facing one end of the glass, a second portion on one side in the front-rear direction with respect to the first portion, and a third portion on the other side with respect to the first portion. The three parts are configured so as to project toward the door end side more than the first part in the driving direction of the sliding door,
The connecting core member is connected to one wall and the other wall of the pair of walls , and contacts the first portion, so that the inner space of the main body portion of the door sill side vertical frame is formed. , Divided into three rooms in a cross section perpendicular to the height direction,
A fire door in which the heat capacity of the vertical frame on the side of the door is larger than the heat capacity of the vertical frame on the side of the door. The fire door according to claim 3, wherein the pair of walls are a first wall and a second wall extending in a driving direction of the sliding door. The connection core member is connected to the first wall, a first contact portion extending in the driving direction of the sliding door, a second contact portion connected to the second wall, extending in the driving direction of the sliding door, The fire door according to claim 4, further comprising a connecting portion that connects the first contact portion and the second contact portion. Before SL coupling portion fire door according to claim 5 which is in contact with said first portion of said third wall. The body portion includes a fourth wall spaced apart from the third wall;
The fire door according to claim 6, further comprising an auxiliary core member arranged inside the main body portion at a position facing the fourth wall. In the front-rear direction of the sliding door, the size of the auxiliary core material is shorter than the size of the fourth wall,
One end of the auxiliary core in the front-rear direction of the sliding door is in contact with one of the first wall and the second wall, and the other end of the sliding door in the front-rear direction is the first end. The fire door according to claim 7, wherein the fire door is arranged with a space from the other of the wall and the second wall. The glass includes a door-end side supported portion supported by the door-end side vertical frame, and a door-end side supported portion supported by the door-end side vertical frame,
The fire door according to any one of claims 1 to 8, wherein a dimension of the door rear side supported portion is longer than a dimension of the door tip side supported portion in a driving direction of the sliding door. An upper frame connected to the door sill side vertical frame and the door tip side vertical frame and supporting the upper part of the glass,
A lower frame that is connected to the door sill side vertical frame and the door end side vertical frame and supports a lower portion of the glass,
The glass includes an upper frame supported portion supported by the upper frame, and a lower frame supported portion supported by the lower frame,
The fire door according to any one of claims 1 to 9, wherein a dimension of the upper frame supported portion is longer than a dimension of the lower frame supported portion in a height direction of the fire door.