Fire door

Abstract

To provide a fire door that blocks smoke in addition to a flame in the event of a fire.SOLUTION: A fire door has a first sliding door 21 provided in an opening, and a first elastic member 52 that seals a space between the first sliding door 21 and a second sliding door 22 that contacts a first door tip 21A of the first sliding door 21 when the first sliding door 21 is fully closed. The first sliding door 21 is equipped at a first door tip 21A with a door-tip side vertical stile 24 having a first support member 24A supporting one end of a glass plate 23 and a plurality of barrier members 51 provided in the first support member 24A spaced apart in the thickness direction of the first sliding door 21. The first elastic member 52 is mounted across the entire height of the door-tip side vertical stile 24 between the plurality of barrier members 51.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a fire door.

Background Art

[0002] Fire doors installed in buildings are known. For example, the fire door described in Patent Document 1 includes a door that moves in an opening, a drive unit that drives the door, a control unit that controls the drive unit, and a horizontal frame that houses the drive unit and the control unit. The opening is always closed by the door and the horizontal frame.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the fire door described in Patent Document 1, in addition to blocking flames during a fire, it is required to block smoke.

Means for Solving the Problems

[0005] The fire door for solving the above problems includes a door provided in an opening, an elastic member that closes the space between a contact member that contacts the door tip of the door when the door is fully closed and the door, the door includes a support member that supports one end of a glass plate, and a plurality of barrier members provided at a distance from the support member in the thickness direction of the door and provided at the door tip of a vertical frame having the barrier members, and the elastic member is attached to the entire surface in the height direction of the vertical frame between the plurality of barrier members.

[0006] According to the above configuration, the elastic member is installed across the entire surface between the door edge barrier members. Therefore, it is possible to suppress smoke from flowing from the side where the fire is occurring to the opposite side through the gap between the door edge and the contact member. In addition, since the elastic member is provided between the barrier members, it is possible to suppress the elastic member from being exposed to the heat of the fire.

[0007] With respect to the above-mentioned fire door, it is preferable that the elastic member is provided between the plurality of barrier members of the support member and on the surface of the support member facing the contact member. Regarding the above-mentioned fire door, the elastic member comprises a main body fixed to the surface of the support member and extensions extending from both ends of the main body, and preferably the main body and the extensions form a semicircular shape that is hollow when viewed from the direction of extension of the elastic member, with the tips of the extensions spaced apart.

[0008] Regarding the above fire door, the elastic member It will be attached. The system comprises a first door and a second door, which is the contact member that contacts the door edge of the first door when fully closed, wherein the second door has a vertical frame at its door edge that includes a support member that supports one end of a glass plate and a protrusion that fits between the barrier member of the first door, and the elastic member is preferably attached to the entire surface of the vertical frame in the height direction between the plurality of barrier members and contacts the protrusion when fully closed.

[0009] With respect to the above-mentioned fire door, it is preferable that when fully closed, the leading edge of the door contacts the vertical frame of the opening, the vertical frame has a protrusion that fits between the barrier members of the door, and the elastic member contacts the protrusion when fully closed.

[0010] With respect to the fire door described above, it is preferable that when the door is fully closed, the leading edge of the door contacts the vertical frame of the opening, the vertical frame has a recess into which the leading edge of the door fits, and the elastic member contacts the bottom surface of the recess when the door is fully closed.

[0011] The fire door described above comprises a fixed wall provided in the opening, wherein when fully closed, the central mullion of the fixed wall and the vertical frame at the bottom of the door face each other; a first smoke-stopping member provided on the entire surface in the height direction of the vertical frame at the bottom of the door; a second smoke-stopping member provided on the entire surface in the height direction of the central mullion of the fixed wall; and a second elastic member, with the elastic member being the first elastic member, that closes the space between the first smoke-stopping member and the second smoke-stopping member, wherein the second elastic member is preferably attached to the entire surface in the height direction of the surface of the first smoke-stopping member and the second smoke-stopping member that faces the other end of the first smoke-stopping member and the second smoke-stopping member.

[0012] With respect to the above-mentioned fire door, the second elastic member preferably comprises a main body fixed to opposing surfaces and an extension extending from one end of the main body, and the main body and the extension form a U-shape when viewed from the extension direction. [Effects of the Invention]

[0013] According to the present invention, in addition to blocking flames, smoke can also be blocked during a fire. [Brief explanation of the drawing]

[0014] [Figure 1] This is a front view showing the configuration of the first embodiment of the fire door. [Figure 2] This is a cross-sectional view showing the configuration of the fire door in the same embodiment. [Figure 3] This is a cross-sectional view showing the door edge of the fire door in the open state according to the same embodiment. [Figure 4] This is a cross-sectional view showing the door edge of the fire door in the fully closed state according to the same embodiment. [Figure 5] This is a cross-sectional view showing the end of a fire door in the open position according to the same embodiment. [Figure 6] This is a cross-sectional view showing the end of a fire door in the fully closed state according to the same embodiment. [Figure 7] This is a cross-sectional view showing the door edge in the open state of the second embodiment of the fire door. [Figure 8]It is a cross-sectional view showing the door tip of the fire door in the fully closed state of the same embodiment. [Figure 9] It is a cross-sectional view showing the door tip of the fire door in the open state of the third embodiment. [Figure 10] It is a cross-sectional view showing the door tip of the fire door in the fully closed state of the same embodiment. [Figure 11] It is a cross-sectional view showing the door butt of the fire door in the open state of the modified example. [Figure 12] It is a cross-sectional view showing the door butt of the modified example of the fire door in the fully closed state. [Figure 13] A diagram showing a modified example of the elastic member of the fire door. [Figure 14] A diagram showing a modified example of the elastic member of the fire door. [Figure 15] A diagram showing a modified example of the elastic member of the fire door.

Mode for Carrying Out the Invention

[0015] (First Embodiment) Hereinafter, a first embodiment of the fire door will be described with reference to FIGS. 1 to 6. The fire door is a draw-type fire door.

[0016] (Fire Door 1) As shown in FIG. 1, the fire door 1 is provided in a rectangular opening 5 formed in a building. The fire door 1 includes a pair of vertical frames 10 arranged at intervals in the longitudinal direction of the opening 5. The fire door 1 includes a case 40 disposed above the pair of vertical frames 10 and supported by the pair of vertical frames 10. The case 40 corresponds to a plain surface. The vertical frame 10 has a hollow shape and extends in the height direction of the fire door 1. The fire door 1 is formed of stainless steel. Therefore, the fire door 1 is not easily rusted.

[0017] The fire door 1 comprises two fixed walls 30 and two sliding doors 20. The two fixed walls 30 consist of a first fixed wall 31 and a second fixed wall 32. The first fixed wall 31 and the second fixed wall 32 are spaced apart from each other between a pair of vertical frames 10 and are connected to each vertical frame 10. The first fixed wall 31 and the second fixed wall 32 form an entrance between them. The case 40 houses a drive unit 41 for moving the sliding doors 20 and a control unit 42 for controlling the drive unit 41. The two sliding doors 20 consist of a first sliding door 21 and a second sliding door 22. The drive unit 41 moves the first sliding door 21 and the second sliding door 22 along the direction in which the two fixed walls 30 are aligned.

[0018] As shown in Figure 2, the first sliding door 21 and the second sliding door 22 are positioned in the front-to-back direction of the fire door 1, on the side facing the fixed wall 30. The movement of the first sliding door 21 and the second sliding door 22 opens and closes the entrance between the first fixed wall 31 and the second fixed wall 32.

[0019] As shown in Figure 1, the fixed wall 30 comprises a hollow central mullion 33 extending in the height direction, a baseboard 34, and a glass plate 35. The baseboard 34 is positioned between the central mullion 33 and the vertical frame 10 and extends in the opening and closing directions of the first sliding door 21 and the second sliding door 22. The glass plate 35 is supported by the vertical frame 10, the central mullion 33, and the baseboard 34. The glass plate 35 is made of heat-resistant glass.

[0020] The first sliding door 21 comprises a glass plate 23, a first door-end vertical frame 24, a door-end vertical frame 26, an upper frame 27, and a lower frame 28. The first door-end vertical frame 24 includes a first support member 24A that supports one side of the glass plate 23. The second sliding door 22 comprises a glass plate 23, a second door-end vertical frame 25, a door-end vertical frame 26, an upper frame 27, and a lower frame 28. The second door-end vertical frame 25 includes a second support member 25A that supports one side of the glass plate 23. The door-end vertical frame 26 supports the other side of the glass plate 23. The upper frame 27 supports the upper part of the glass plate 23. The lower frame 28 supports the lower part of the glass plate 23. The glass plate 23 is made of heat-resistant glass.

[0021] The first sliding door 21 is suspended from a running rail (not shown) located inside the case 40 via a first door hanger 43 having door rollers, and is supported by the first door hanger 43 so as to be slidable in the driving direction. The second sliding door 22 is suspended from a running rail located inside the case 40 via a second door hanger 44 having door rollers, and is supported by the second door hanger 44 so as to be slidable in the driving direction.

[0022] (Gap structure at the door edge 20A of sliding door 20) Next, with reference to Figures 3 and 4, the gap structure at the door edge 20A of the sliding door 20 will be described. As shown in Figures 3 and 4, a joint structure 50 is provided at the contact point between the first door edge 21A of the first sliding door 21 and the second door edge 22A of the second sliding door 22. Specifically, a plurality of barrier members 51 are provided on the first door edge side vertical frame 24, extending over the entire height of the first door edge side vertical frame 24. The barrier members 51 are provided at both ends, spaced apart in the thickness direction of the first door edge 21A. A protrusion 53 is provided on the second door edge side vertical frame 25, extending over the entire height of the second door edge side vertical frame 25. The protrusion 53 is located in the center of the second door edge 22A in the thickness direction. When the sliding door 20 is fully closed, the protrusion 53 of the second door edge 22A fits between the plurality of barrier members 51 of the first door edge 21A. The second sliding door 22 corresponds to the contact member.

[0023] Fire door 1The first elastic member 52 comprises a first elastic member 52. The first elastic member 52 closes the space between the first sliding door 21 and the second sliding door 22 when the sliding door 20 is fully closed. The first elastic member 52 is attached to the entire height surface of the first door-side vertical frame 24 between a plurality of barrier members 51. The first elastic member 52 is provided between a plurality of barrier members 51 of the first support member 24A of the first door-side vertical frame 24, and on the surface 24B of the first support member 24A facing the second sliding door 22. The first elastic member 52 contacts the protrusion 53 when fully closed. The first elastic member 52 comprises a main body portion 52A, a first extension portion 52B, and a second extension portion 52C. The main body portion 52A is fixed to the surface 24B of the first support member 24A. The first extension portion 52B extends from the left end of the main body portion 52A. The second extension portion 52C extends from the right end of the main body portion 52A. The main body portion 52A, the first extension portion 52B, and the second extension portion 52C form a semicircular shape that is hollow when viewed from the direction of extension of the first elastic member 52, and the tip of the first extension portion 52B and the tip of the second extension portion 52C are spaced apart.

[0024] (Gap structure between the vertical frame 26 on the door end side of the sliding door 20 and the central vertical support 33 of the fixed wall 30) Next, with reference to Figures 5 and 6, the gap structure between the door-end vertical frame 26 of the sliding door 20 and the central vertical post 33 of the fixed wall 30 will be described.

[0025] As shown in Figures 5 and 6, a smoke-stopping structure 60 is provided in the gap between the central vertical 33 of the fixed wall 30 and the vertical frame 26 on the door-end side of the sliding door 20. When fully closed, the central vertical 33 of the fixed wall 30 and the vertical frame 26 on the door-end side of the sliding door 20 face each other. The smoke-stopping structure 60 of the sliding door 20 comprises a first smoke-stopping member 61, a second smoke-stopping member 62, and a second elastic member 63. The first smoke-stopping member 61 is provided on the entire height-direction of the vertical frame 26 on the door-end side of the sliding door 20. The second smoke-stopping member 62 is provided on the entire height-direction of the central vertical 33 of the fixed wall 30. The first smoke-stopping member 61 and the second smoke-stopping member 62 are L-shaped members in plan view. When fully closed, the first smoke-stopping member 61 is inserted between the central vertical 33 and the second smoke-stopping member 62. Furthermore, the second smoke-stopping member 62 is inserted between the door-end vertical frame 26 and the first smoke-stopping member 61 when the door is fully closed.

[0026] The second elastic member 63 closes the gap between the first smoke-stopping member 61 and the second smoke-stopping member 62. The second elastic member 63 is attached to the entire surface in the height direction of the surface 62A where the tip of the first smoke-stopping member 61 faces the second smoke-stopping member 62. The second elastic member 63 comprises a main body portion 63A and an extension portion 63B extending from one end of the main body portion 63A. The main body portion 63A is fixed to the opposing surface 62A. The extension portion 63B extends from one end of the main body portion 63A. The main body portion 63A and the extension portion 63B form a U-shape when viewed from the extension direction. The side surface of the main body portion 63A is provided with retaining folds.

[0027] (action) Next, the function of fire door 1 will be explained with reference to Figures 4 and 6. Fire door 1, in the event of a fire, remains fully closed to prevent flames and smoke from passing through.

[0028] As shown in Figure 4, when the sliding door 20 is fully closed, the protrusion 53 of the second sliding door 22 is inserted between the multiple barrier members 51 of the first sliding door 21. In other words, the creepage distance between the first door-side vertical frame 24 and the second door-side vertical frame 25 is increased by the joint structure 50. The protrusion 53 of the second sliding door 22 then contacts the first elastic member 52 located between the multiple barrier members 51. The first extension 52B and the second extension 52C of the first elastic member 52 contact the protrusion 53 of the second sliding door 22 and flex. As a result, the gap between the first sliding door 21 and the second sliding door 22 is sealed by the first elastic member 52. The time it takes for smoke to reach the first elastic member 52 is increased, and it cannot pass through the first elastic member 52.

[0029] As shown in Figure 6, when the sliding door 20 is fully closed, the door-end vertical frame 26 of the sliding door 20 faces the central vertical 33 of the fixed wall 30. The first smoke-stopping member 61 is inserted between the central vertical 33 and the second smoke-stopping member 62. The second smoke-stopping member 62 is inserted between the door-end vertical frame 26 and the first smoke-stopping member 61. In other words, the creepage distance between the door-end vertical frame 26 and the central vertical 33 is increased by the first smoke-stopping member 61 and the second smoke-stopping member 62. The first smoke-stopping member 61 then contacts the second elastic member 63 located on the opposing surface 62A of the second smoke-stopping member 62. The extension 63B of the second elastic member 63 contacts the first smoke-stopping member 61 and bends. As a result, the gap between the door-end vertical frame 26 and the central vertical 33 is closed by the second elastic member 63. The time it takes for the smoke to reach the second elastic member 63 increases, and it becomes impossible for it to pass through the first elastic member 52.

[0030] Next, the effects of the first embodiment will be described. (1-1) The first elastic member 52 is installed across the entire surface between the barrier members 51 of the first door edge 21A. This prevents smoke from flowing from the side where the fire is occurring to the opposite side through the gap between the first door edge 21A of the first sliding door 21 and the second door edge 22A of the second sliding door 22. In addition, since the first elastic member 52 is provided between the barrier members 51, it is possible to prevent the first elastic member 52 from being exposed to the heat of the fire.

[0031] (1-2) The first elastic member 52 is provided between the multiple barrier members 51 of the first support member 24A and on the surface 24B of the first support member 24A facing the second sliding door 22. By increasing the creepage distance to the first elastic member 52, the exposure of the first elastic member 52 to the heat of the fire can be further suppressed.

[0032] (1-3) The main body 52A, the first extension 52B, and the second extension 52C of the first elastic member 52 are hollow when viewed from the extension direction, and the tip of the first extension 52B and the tip of the second extension 52C are spaced apart to form a semicircular shape. Therefore, when the second sliding door 22, which is in contact with the first door edge 21A of the first sliding door 21, comes into contact with the first elastic member 52, the first extension 52B and the second extension 52C deform, thereby preventing a gap from forming between the first door edge 21A of the first sliding door 21 and the second door edge 22A of the second sliding door 22.

[0033] (1-4) The protrusion 53 of the second door edge 22A of the second sliding door 22 fits between the barrier members 51 of the first sliding door 21, and when fully closed, the first elastic member 52 comes into contact with the protrusion 53 of the second sliding door 22. This lengthens the path for smoke to flow from the side where the fire is occurring to the opposite side, increasing the time it takes for the smoke to pass through the path, and the first elastic member 52 can suppress the passage of smoke.

[0034] (1-5) The second elastic member 63 is attached to the entire surface in the height direction of the surface 62A of the first smoke-stopping member 61 that faces the second smoke-stopping member 62. As a result, the second elastic member 63 can prevent smoke from passing through the first smoke-stopping member 61 and the second smoke-stopping member 62 from the side where the fire is occurring to the opposite side.

[0035] (1-6) The second elastic member 63 has a hollow portion that extends away from the contact surface. Therefore, even if the first smoke stopper member 61 comes into contact with the second elastic member 63, the hollow portion deforms, preventing a gap from forming between the first smoke stopper member 61 and the second smoke stopper member 62.

[0036] (Second Embodiment) The second embodiment of the fire door will be described below with reference to Figures 7 and 8. This embodiment of the fire door differs from the first embodiment in that it is a single-sliding door and has a protrusion on the vertical frame. The following description will focus on the differences from the first embodiment.

[0037] As shown in Figures 7 and 8, the vertical frame 10 has protrusions 54 that extend along its entire height. When the sliding door 20 is fully closed, the protrusions 54 of the vertical frame 10 fit between the multiple barrier members 51 of the first door edge 21A. The vertical frame 10 corresponds to a contact member.

[0038] (Gap structure between the first door edge 21A of the first sliding door 21 and the vertical frame 10) Next, with reference to Figures 7 and 8, the gap structure between the first door edge 21A of the first sliding door 21 and the protrusion 54 of the vertical frame 10 will be described.

[0039] As shown in Figures 7 and 8, a joint structure 50 is provided at the contact point between the first door edge 21A of the first sliding door 21 and the vertical frame 10. Specifically, a plurality of barrier members 51 are provided on the first door edge side vertical frame 24, extending over the entire height of the first door edge side vertical frame 24. The barrier members 51 are provided at both ends, spaced apart in the thickness direction of the first door edge 21A.

[0040] The first sliding door 21 is equipped with a first elastic member 52. The first elastic member 52 closes the gap between the first sliding door 21 and the vertical frame 10 when the sliding door 20 is fully closed. The first elastic member 52 is attached to the entire height surface of the first door-side vertical frame 24 between a plurality of barrier members 51. The first elastic member 52 is provided between the plurality of barrier members 51 of the first support member 24A of the first door-side vertical frame 24, and on the surface 24B of the first support member 24A facing the vertical frame 10. The first elastic member 52 contacts the protrusion 54 when the door is fully closed.

[0041] (action) Next, referring to Figure 8, the function of fire door 1 will be explained. Fire door 1, in the event of a fire, remains fully closed to prevent flames and smoke from passing through.

[0042] As shown in Figure 8, when the sliding door 20 is fully closed, the protrusion 54 of the vertical frame 10 is inserted between the multiple barrier members 51 of the first sliding door 21. In other words, the creepage distance between the first door-side vertical frame 24 and the vertical frame 10 is increased by the joint structure 50. The protrusion 54 of the vertical frame 10 then contacts the first elastic member 52 located between the multiple barrier members 51. The first extension 52B and the second extension 52C of the first elastic member 52 contact the protrusion 54 of the vertical frame 10 and flex. As a result, the gap between the first sliding door 21 and the vertical frame 10 is sealed by the first elastic member 52. The time it takes for smoke to reach the first elastic member 52 is increased, and it is no longer able to pass through the first elastic member 52.

[0043] Next, the effects of the second embodiment will be described. In addition to the effects of (1-1) to (1-3), (1-5), and (1-6) of the first embodiment, the following effects are also achieved. (2-1) The protrusion 54 of the vertical frame 10 fits between the barrier member 51 of the first door edge 21A of the first sliding door 21, and when fully closed, the first elastic member 52 comes into contact with the protrusion 54 of the vertical frame 10. This lengthens the path for smoke to flow from the side where the fire is occurring to the opposite side, increasing the time it takes for the smoke to pass through the path, and the first elastic member 52 can suppress the passage of smoke.

[0044] (Third embodiment) A third embodiment of the fire door will be described below with reference to Figures 9 and 10. This embodiment differs from the first embodiment in that it is a single-sliding door and has a recess in the vertical frame. The following description will focus on the differences from the first embodiment.

[0045] As shown in Figures 9 and 10, the first sliding door 21 is equipped with a third elastic member 55. The vertical frame 10 has a recess 56 that extends along the entire height of the vertical frame 10. When the sliding door 20 is fully closed, the first door edge 21A fits into the recess 56 of the vertical frame 10. The third elastic member 55 is installed between a plurality of barrier members 51 of the first door edge 21A. The third elastic member 55 is installed across the entire height of the first door edge 21A. The third elastic member 55 comprises a main body 55A, a first extension 55B, and a second extension 55C. The main body 55A is fixed to the surface 24B of the first door edge side vertical frame 24 and is hollow in shape. The first extension 55B extends from the left end of the main body 55A. The second extension 55C extends from the right end of the main body 55A. The main body 55A, the first extension 55B, and the second extension 55C form a semicircular shape that is hollow when viewed from the extension direction of the third elastic member 55, with the tips of the first extension 55B and the second extension 55C spaced apart. The vertical frame 10 corresponds to a contact member.

[0046] (Gap structure between the first door edge 21A of the first sliding door 21 and the vertical frame 10) As shown in Figures 9 and 10, the third elastic member 55 closes the gap between the first sliding door 21 and the vertical frame 10 when the sliding door 20 is fully closed. The third elastic member 55 contacts the bottom surface of the recess 56 of the vertical frame 10 when fully closed.

[0047] (action) Next, referring to Figure 10, the function of fire door 1 will be explained. Fire door 1, in the event of a fire, remains fully closed to prevent flames and smoke from passing through.

[0048] As shown in Figure 10, when the sliding door 20 is fully closed, the first sliding door 21 is inserted into the recess 56 of the vertical frame 10. It is then positioned between the multiple barrier members 51 of the first door-side vertical frame 24. The third elastic member 55 contacts the bottom surface of the recess 56 of the vertical frame 10. The first extension 55B and the second extension 55C of the third elastic member 55 contact the bottom surface of the recess 56 of the vertical frame 10 and flex. As a result, the gap between the first sliding door 21 and the vertical frame 10 is sealed by the third elastic member 55. The time it takes for smoke to reach the third elastic member 55 is increased, and it becomes unable to pass through the third elastic member 55.

[0049] Next, the effects of the third embodiment will be described. In addition to the effects of (1-1) to (1-3), (1-5), and (1-6) of the first embodiment, the following effects are also achieved. (3-1) The first door edge 21A of the first sliding door 21 fits into the recess 56 of the vertical frame 10, and when fully closed, the third elastic member 55 contacts the bottom surface of the recess 56 of the vertical frame 10. This lengthens the path for smoke to flow from the side where the fire is occurring to the opposite side, increasing the time it takes for the smoke to pass through the path, and the third elastic member 55 can suppress the passage of smoke.

[0050] (Other embodiments) Each of the above embodiments can be implemented with the following modifications. Each of the above embodiments and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0051] In the embodiments described above, the shape of the second elastic member 63 is U-shaped, but it may be other shapes. For example, as shown in Figures 11 and 12, a hollow elastic member 64 may be provided. In this case, when the first smoke-stopping member 61 comes into contact with the elastic member 64, the first smoke-stopping member 61 bites into the elastic member 64, and the gap between the first smoke-stopping member 61 and the elastic member 64 can be closed.

[0052] In each of the above embodiments, a connecting portion may be provided to connect the tips of the extensions of the first elastic member 52, the second elastic member 63, and the third elastic member 55. As shown in Figure 13, a connecting portion 52D is provided between the tip of the first extension 52B and the tip of the second extension 52C of the first elastic member 52. The connecting portion between the first extension 52B and the connecting portion 52D is thin, and the connecting portion will split when the connecting portion 52D is pulled. Similarly, the connecting portion between the second extension 52C and the connecting portion 52D is thin, and the connecting portion will split when the connecting portion 52D is pulled. Therefore, deformation of the first extension 52B and the second extension 52C can be prevented until the first elastic member 52 is used. As shown in Figure 14, a connecting portion 55D is provided between the tip of the first extension 55B and the tip of the second extension 55C of the third elastic member 55. The joint between the first extension 55B and the connecting part 55D is thin, and the joint will split when the connecting part 55D is pulled. Similarly, the joint between the second extension 55C and the connecting part 55D is thin, and the joint will split when the connecting part 55D is pulled. Therefore, deformation of the first extension 52B and the second extension 52C can be prevented until the third elastic member 55 is used. As shown in Figure 15, a connecting part 63C is provided between the tip of the extension 63B of the second elastic member 63 and the main body 63A. The joint between the extension 63B and the connecting part 63C is thin, and the joint will split when the connecting part 63C is pulled. Similarly, the joint between the main body 63A and the connecting part 63C is thin, and the joint will split when the connecting part 63C is pulled. Therefore, deformation of the extension 63B can be prevented until the second elastic member 63 is used.

[0053] In each of the above embodiments, the second elastic member 63 is attached to the entire surface in the height direction of the surface 62A of the second smoke-stopping member 62, where the tip of the first smoke-stopping member 61 faces the second smoke-stopping member 62. However, the second elastic member 63 may also be attached to the entire surface in the height direction of the surface of the first smoke-stopping member 61, where the tip of the second smoke-stopping member 62 faces the first smoke-stopping member 61.

[0054] In each of the above embodiments, the second elastic member 63 is provided in the smoke-stopping structure 60 between the central vertical 33 of the fixed wall 30 and the vertical frame 26 on the door-end side of the sliding door 20. However, the second elastic member 63 may be omitted.

[0055] In each of the above embodiments, the first elastic member 52 comprises a main body portion 52A, a first extension portion 52B, and a second extension portion 52C, and is hollow and semicircular. However, an elastic member comprising only a main body portion and one extension portion, or an elastic member of other shapes, may also be used.

[0056] In each of the above embodiments, the first elastic member 52 is provided between the multiple barrier members 51 and on the surface 24B of the first support member 24A facing the second door edge 22A. However, it may also be provided on a surface other than the surface 24B of the first support member 24A.

[0057] In each of the above embodiments, if the structure is composed of multiple objects, those multiple objects may be integrated, and conversely, if the structure is composed of a single object, it may be divided into multiple objects. Whether or not the objects are integrated, the structure should be configured in a way that achieves the objective of the invention. [Explanation of Symbols]

[0058] 1… Fire door 5…Aperture 10...Vertical frame as a contact member 20... Sliding door 20A... Door end 21…First sliding door right side 21A…first door 22...Second sliding door, left side 22A…Second door 23... Glass plate 24…First door front side vertical frame 24A...First support member 24B...side 25…Second door front vertical frame 25A...Second support member 26…Doorjiri side stile 27…Upper stile 28…Lower stile 30…Fixed wall 31…First fixed wall 32…Second fixed wall 33…Middle mullion 34… Baseboard 35... Glass plate 40...cases 41…Drive unit 42... Control Unit 43...First door hanger 44... Second door hanger 50...Actually a girdled structure 51… Barrier member 52…First elastic member 52A...Main unit 52B...First extension part 52C…Second extension part 53…Convex part 54…Convex part 55...Third elastic member 55A...Main unit 55B…1st extension part 55C…Second extension part 56…recess 60... Smoke-stopping structure 61...First smoke-stopping member 62...Second smoke-stopping member 62A...side 63...Second elastic member 63A...Main unit 63B...Extension part 64...Elastic member

Claims

1. A door installed in the opening, A first elastic member that seals the gap between the door and a contact member that contacts the door edge when the door is fully closed, A fixed wall provided in the opening, wherein when fully closed, the central vertical of the fixed wall and the vertical stile at the end of the door face each other in the thickness direction of the door, A first smoke-stopping member is provided on the entire vertical frame of the door's end in the height direction, A second smoke-stopping member is provided on the entire surface in the height direction of the central vertical of the fixed wall, The device comprises a second elastic member that closes the gap between the first smoke-stopping member and the second smoke-stopping member, The door has a vertical frame at the door edge, which includes a support member that supports one end of a glass plate and a plurality of barrier members provided on the support member at intervals in the thickness direction of the door. The first elastic member is attached to the entire surface of the vertical frame in the height direction between the plurality of barrier members. The first smoke-stopping member has a portion that is inserted between the central mullion and the second smoke-stopping member when fully closed. The second smoke-stopping member has a portion that is inserted between the door edge and the first smoke-stopping member when the door is fully closed. The second elastic member is attached to the entire surface in the height direction of the surface of the first smoke-stopping member and the second smoke-stopping member that faces the other end of the first smoke-stopping member and the second smoke-stopping member. Furthermore, the second elastic member comprises a main body fixed to the opposing surface, It comprises an extension portion extending from one end of the main body, The main body and the extension form a U-shape when viewed from the extension direction. Fire door.

2. The first elastic member is provided between the plurality of barrier members of the support member and on the surface of the support member facing the contact member. A fire door according to claim 1.

3. The first elastic member comprises a main body fixed to the surface of the support member, It comprises extensions extending from both ends of the main body, The main body and the extension form a hollow, semicircular shape when viewed from the extension direction of the first elastic member, with the tips of the extension being spaced apart. The fire door according to claim 2.

4. The first door to which the first elastic member is attached, The system comprises a second door, which is the contact member that contacts the door edge of the first door when it is fully closed, The second door has a vertical frame at its edge, which includes a support member that supports one end of the glass plate and a protrusion that fits between the barrier member of the first door. The first elastic member is attached to the entire surface of the vertical frame in the height direction between the plurality of barrier members and contacts the protrusion when fully closed. A fire door according to claim 1.

5. When fully closed, the leading edge of the door contacts the vertical frame of the opening. The vertical frame is provided with a protrusion that fits between the barrier members of the door, The first elastic member contacts the protrusion when fully closed. A fire door according to claim 1.

6. When fully closed, the leading edge of the door contacts the vertical frame of the opening. The aforementioned vertical frame is provided with a recess into which the leading edge of the door fits, The first elastic member contacts the bottom surface of the recess when fully closed. A fire door according to claim 1.

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