Automatic door
The automatic door with inorganic fiber airtight materials addresses the issue of smoke leakage by maintaining airtightness during fires, enhancing smoke-blocking capabilities.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- FURUTECH CO LTD
- Filing Date
- 2022-05-26
- Publication Date
- 2026-07-02
AI Technical Summary
Conventional smoke doors using rubber as an airtight material are prone to burning during a fire, creating gaps that allow smoke to escape.
The automatic door employs an airtight material made of inorganic fibers with elastic properties, featuring a smoke shielding part that includes a pressing part to maintain airtightness even under fire conditions.
The use of inorganic fiber materials enhances smoke-blocking performance by reducing the likelihood of burning and improving airtightness, ensuring effective smoke containment.
Smart Images
Figure 0007883882000001 
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Figure 0007883882000003
Abstract
Description
Technical Field
[0001] The present invention relates to an automatic door capable of suppressing the outflow of smoke.
Background Art
[0002] Conventionally, a door capable of suppressing the outflow of smoke by using rubber as an airtight material is known (see, for example, Patent Document 1).
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] However, in the conventional door, since rubber is used as the airtight material, there is a possibility that the airtight material burns and a gap is generated during a fire. When a gap is generated, there is a problem that smoke escapes outside through this gap.
[0005] Therefore, an object of the present invention is to provide an automatic door capable of improving the smoke shielding performance.
Means for Solving the Problems
[0006] The automatic door of the present invention includes a smoke shielding part that shields the outflow of smoke from a gap between the door and a door vicinity part that is a part near the door. The smoke shielding part includes an airtight material provided on one of the door and the door vicinity part, and a pressing part provided on the other of the door and the door vicinity part and pressed against the airtight material. The airtight material is formed of inorganic fibers, and the pressed part against which the pressing part is pressed has elasticity.
[0007] With this configuration, the automatic door of the present invention has an airtight seal made of inorganic fibers, which reduces the possibility of the airtight seal burning in the event of a fire. As a result, it is possible to improve the ability of the airtight seal to prevent smoke from escaping during a fire. Therefore, the automatic door of the present invention can improve smoke-blocking performance.
[0008] In the automatic door of the present invention, the airtight material may have elasticity in the pressed portion by bending a cloth-like member made of inorganic fibers.
[0009] With this configuration, the automatic door of the present invention can improve the durability of the smoke-blocking section because the airtight material is less prone to wear compared to a configuration in which a blanket-like member made of inorganic fibers is used as the airtight material.
[0010] In the automatic door of the present invention, the airtight material comprises a fabric-like member made of inorganic fibers, which has elastic protrusions when bent, and the protrusions may also comprise a pressed portion against which the pressing portion is pressed in a direction intersecting the extending direction of the door.
[0011] With this configuration, when gas attempts to flow through the gap between the door and the area near the door, the protruding portion of the airtight seal is pushed by the flow of gas, causing the pressed portion to adhere tightly to the pressing surface, thereby improving airtightness.
[0012] In the automatic door of the present invention, the pressing portion may have elasticity in the part that is pressed against the object to be pressed by bending a cloth-like member made of inorganic fibers.
[0013] With this configuration, the automatic door of the present invention can improve airtightness because the fabric-like members formed from inorganic fibers are bent, causing elastic materials to press against each other and create a tight seal.
[0014] In the automatic door of the present invention, the airtight material comprises a fabric-like member formed of inorganic fibers, which has elastic protrusions when bent, the protrusions comprising a pressed portion against which the pressing portion is pressed in a direction intersecting the extending direction of the door, and the protrusions may be arranged on both sides of the pressing portion in a direction intersecting the extending direction of the door.
[0015] With this configuration, even if the automatic door of the present invention moves slightly in a direction intersecting the door's extending direction, at least one of the protruding parts on both sides of the pressing part will be in close contact with the pressing part, thereby improving airtightness.
[0016] In the automatic door of the present invention, the airtight material may be a blanket-like member formed of inorganic fibers.
[0017] This configuration allows for easier assembly of the automatic door of the present invention compared to a configuration in which a fabric-like material made of inorganic fibers, which becomes elastic when bent, is used as the airtight seal.
[0018] In the automatic door of the present invention, the airtight material may be provided in the vicinity of the door.
[0019] With this configuration, the automatic door of the present invention can reduce the vibration applied to the airtight material when the door is opened and closed, compared to a configuration in which the airtight material is provided on the door that moves when it is opened and closed, thereby improving the durability of the smoke-blocking section. [Effects of the Invention]
[0020] The automatic door of the present invention can improve smoke-blocking performance. [Brief explanation of the drawing]
[0021] [Figure 1] This is a front view of an automatic door according to one embodiment of the present invention, in the case of a single-sliding type. [Figure 2]It is a plan sectional view of a part of an automatic door shown in Fig. 1. [Figure 3] It is a left side sectional view of a part of an automatic door shown in Fig. 1. [Figure 4] It is a left side sectional view near the upper smoke barrier shown in Fig. 3. [Figure 5] It is a plan view of a part of the automatic door shown in Fig. 1 with the airtight material and stopper of the upper smoke barrier shown. [Figure 6] It is a perspective view of a part of the door shown in Fig. 1. [Figure 7] It is a plan sectional view near the door bottom smoke barrier shown in Fig. 2. [Figure 8] It is a right side sectional view of a part of the automatic door shown in Fig. 1 with the airtight material and stopper of the door bottom smoke barrier shown. [Figure 9] It is a plan sectional view near the door top smoke barrier shown in Fig. 2. [Figure 10] It is an external perspective view of the airtight material shown in Fig. 9 when not arranged in the groove of the door. [Figure 11] It is a plan sectional view of a part of the door shown in Fig. 1 with the airtight material of the lower smoke barrier shown. [Figure 12] It is a left side sectional view near an upper smoke barrier different from the upper smoke barrier shown in Fig. 4. [Figure 13] It is a left side sectional view near an upper smoke barrier different from both the upper smoke barrier shown in Fig. 4 and the upper smoke barrier shown in Fig. 12. [Figure 14] It is a left side sectional view near an upper smoke barrier different from all of the upper smoke barriers shown in Fig. 4, Fig. 12, and Fig. 13. [Figure 15] It is a perspective view for explaining the fixing method of the airtight material shown in Fig. 13 by a stopper. [Figure 16](a) A plan cross-sectional view of the vicinity of a door-end smoke-blocking section that is different from the door-end smoke-blocking section shown in Figure 7. (b) A plan cross-sectional view of the vicinity of a door-end smoke-blocking section that is different from both the door-end smoke-blocking section shown in Figure 7 and the door-end smoke-blocking section shown in Figure 16(a). (c) A plan cross-sectional view of the vicinity of a door-end smoke-blocking section that is different from both the door-end smoke-blocking section shown in Figure 7, the door-end smoke-blocking section shown in Figure 16(a), and the door-end smoke-blocking section shown in Figure 16(b). [Figure 17] (a) This is a plan cross-sectional view of the vicinity of a smoke-blocking section at the edge of the door that is different from the smoke-blocking section at the edge of the door shown in Figure 9. (b) This is a plan cross-sectional view of the vicinity of a smoke-blocking section at the edge of the door that is different from both the smoke-blocking section at the edge of the door shown in Figure 9 and the smoke-blocking section at the edge of the door shown in Figure 17(a). [Figure 18] This is a front view of an automatic door according to one embodiment of the present invention, in the case of a sliding type. [Figure 19] Figure 18 is a cross-sectional view of a portion of an automatic door. [Figure 20] (a) A plan cross-sectional view of the vicinity of the smoke-blocking section at the edge of the door shown in Figure 19. (b) A plan cross-sectional view of the vicinity of a smoke-blocking section at the edge of the door that is different from the smoke-blocking section at the edge of the door shown in Figure 20(a). (c) A plan cross-sectional view of the vicinity of a smoke-blocking section at the edge of the door that is different from both the smoke-blocking section at the edge of the door shown in Figure 20(a) and the smoke-blocking section at the edge of the door shown in Figure 20(b). [Figure 21] This is a left side cross-sectional view of the vicinity of the upper smoke shield, showing a modified example of the upper smoke shield shown in Figure 14. [Modes for carrying out the invention]
[0022] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
[0023] First, the configuration of the automatic door according to this embodiment will be described.
[0024] Figure 1 is a front view of the automatic door 10 according to this embodiment in the case of a single-sliding type. Figure 2 is a plan cross-sectional view of a part of the automatic door 10 shown in Figure 1. Figure 3 is a left side cross-sectional view of a part of the automatic door 10 shown in Figure 1.
[0025] The automatic door 10 shown in Figures 1 to 3 comprises a door 20 which is a fixture that can be opened and closed in the left-right direction indicated by arrow 10a, a fixed fixture 30, a vertical frame 40 positioned on the leading edge side of the door 20 and extending in the vertical direction indicated by arrow 10b, a vertical frame 50 positioned on the trailing edge side of the door 20 and extending in the vertical direction indicated by arrow 10b, a transom 60 positioned at the top, a guide rail (not shown) installed on the floor 90 and extending in the left-right direction indicated by arrow 10a, sensors 70 attached to the indoor and outdoor sides of the transom 60 for detecting objects, a drive device 80 housed within the transom 60 for driving the door 20, and a control device (not shown) housed within the transom 60 for controlling the drive device 80. The automatic door 10 shown in Figures 1 to 3 can prevent flames from escaping in the event of a fire and can function, for example, as a fire prevention device or a specific fire prevention device.
[0026] The door 20 comprises an upper frame 21 located at the top, a lower frame 22 located at the bottom, a tail frame 23 located on the door edge side, a door edge frame 24 located on the door edge side, a glass pane 25 fixed by the upper frame 21, lower frame 22, tail frame 23, and door edge frame 24, and a sway stopper 26 fixed to the lower frame 22 and housed in a guide rail to prevent the door 20 from swaying in a direction perpendicular to the extending direction of the door 20, i.e., in the front-to-back direction indicated by arrow 10c. The door edge frame 24 has a groove 24a that extends in the vertical direction indicated by arrow 10b. The groove 24a opens in the same direction as the direction from the door edge to the door edge of the door 20.
[0027] The fixed 30 comprises a mullion 31, a lower frame 32 positioned at the bottom, and a glass pane 33 fixed by the mullion 31, the lower frame 32, and the vertical frame 50. The mullion 31 has a groove 31a formed therein that extends in the vertical direction indicated by arrow 10b. The groove 31a opens in the same direction as the direction from the leading edge to the trailing edge of the door 20.
[0028] The vertical frame 40 has grooves 40a and 40b formed therein, which extend in the vertical direction indicated by arrows 10b. Grooves 40a and 40b each open in the same direction as the door 20, from the leading edge to the trailing edge.
[0029] The transom 60 has a groove 60a that extends in the left-right direction, as indicated by the arrow 10a. The groove 60a is open at the top.
[0030] The drive unit 80 includes a rail 81 extending in the left-right direction indicated by arrow 10a, a bracket 82 fixed to the upper frame 21 of the door 20, and a roller 83 rotatably supported by the bracket 82 and moving along the rail 81.
[0031] The automatic door 10 includes an upper smoke-blocking section 100 that blocks the outflow of smoke from the upper part of the door 20, a door-end smoke-blocking section 200 that blocks the outflow of smoke from the door-end of the door 20, a door-end smoke-blocking section 300 that blocks the outflow of smoke from the door-edge of the door 20, and a lower smoke-blocking section 400 that blocks the outflow of smoke from the lower part of the door 20.
[0032] Figure 4 is a left side cross-sectional view of the vicinity of the upper smoke-blocking section 100. Figure 5 is a plan view of a portion of the automatic door 10 shown in Figure 1, with the airtight seal 101 and stoppers 102 and 103 of the upper smoke-blocking section 100 visible. Figure 6 is a perspective view of a portion of the door 20.
[0033] As shown in Figures 3 to 6, the upper smoke-blocking section 100 comprises an airtight material 101 positioned in the groove 60a of the transom 60, stoppers 102 and 103 to prevent the airtight material 101 from coming out of the groove 60a, and a pressing section 104 which is part of the upper frame 21 of the door 20 and is pressed against the airtight material 101. The upper smoke-blocking section 100 is a smoke-blocking section that prevents smoke from flowing out through the gap between the door 20 and the transom 60, which is the part of the door 20 that is near the door (hereinafter referred to as the "door vicinity").
[0034] The airtight material 101 is a blanket-shaped member formed from inorganic fibers such as alkali earth silicate (AES) or other artificial mineral fibers. The airtight material 101 extends in the left-right direction indicated by the arrow 10a. The airtight material 101 has a pressed portion 101a, which is the part against which the pressing portion 104 is pressed. The airtight material 101 is fixed in the groove 60a of the transom 60 by being pushed in from outside the groove 60a of the transom 60, overcoming the stoppers 102 and 103, while the stoppers 102 and 103 are positioned on the transom 60. The airtight material 101 is elastic because it is blanket-shaped. Therefore, when the pressing portion 104 is pressed against it, the airtight material 101 adheres tightly to the pressing portion 104 by pushing back against it with its own elastic force.
[0035] The stopper 102 extends in the left-right direction indicated by the arrow 10a. The stopper 102 is, for example, a thin, plate-shaped steel member. The stopper 102 may be fixed to the transom 60 by a plurality of screws 102a arranged in the left-right direction indicated by the arrow 10a, or it may be fixed to the transom 60 by a fixing method other than screws, such as welding.
[0036] The stopper 103 is positioned opposite the stopper 102 in the front-to-back direction indicated by arrow 10c, and extends in the left-to-right direction indicated by arrow 10a. The stopper 103 is formed by crushing and bending a part of the member that forms the groove 60a of the transom 60.
[0037] The pressing portion 104 may also be formed by crushing and bending a part of the member that makes up the upper frame 21 of the door 20.
[0038] Figure 7 is a plan cross-sectional view of the vicinity of the door-end smoke barrier 200. Figure 8 is a right-side cross-sectional view of a portion of the automatic door 10 shown in Figure 1, with the airtight seal 201 and stoppers 202 and 203 of the door-end smoke barrier 200 visible.
[0039] As shown in Figures 2 and 6-8, the door-end smoke-blocking section 200 is a smoke-blocking section with a configuration similar to that of the upper smoke-blocking section 100 (see Figure 4). That is, the door-end smoke-blocking section 200 comprises an airtight material 201 placed in the groove 31a of the mullion 31, stoppers 202 and 203 to prevent the airtight material 201 from coming out of the groove 31a, and a pressing portion 204 which is part of the door-end frame 23 of the door 20 and is pressed against the airtight material 201. The door-end smoke-blocking section 200 is a smoke-blocking section that blocks the outflow of smoke from the gap between the door 20 and the mullion 31, which is the area near the door.
[0040] The airtight material 201 is a blanket-shaped member formed from inorganic fibers such as alkali earth silicate (AES) or other artificial mineral fibers. The airtight material 201 extends in the vertical direction indicated by arrow 10b. The airtight material 201 has a pressed portion 201a, which is the part against which the pressing portion 204 is pressed. The airtight material 201 is fixed in the groove 31a by being pushed from outside the groove 31a of the mullion 31 into the groove 31a, overcoming the stoppers 202 and 203, while the stoppers 202 and 203 are positioned on the mullion 31. The airtight material 201 is elastic due to its blanket shape. Therefore, when the pressing portion 204 is pressed against it, the airtight material 201 adheres tightly to the pressing portion 204 by pushing back against it with its own elastic force.
[0041] The stopper 202 extends in the vertical direction indicated by arrow 10b. The stopper 202 is, for example, a thin, plate-shaped steel member. The stopper 202 may be fixed to the mullion 31 by a plurality of screws 202a arranged in the vertical direction indicated by arrow 10b, or it may be fixed to the mullion 31 by a fixing method other than screws, such as welding.
[0042] The stopper 203 is positioned opposite the stopper 202 in the front-to-back direction indicated by arrow 10c, and extends in the up-and-down direction indicated by arrow 10b. The stopper 203 is formed by crushing and bending a part of the member constituting the mullion 31.
[0043] The pressing portion 204 may also be formed by crushing and bending a part of the member that makes up the door frame 23 of the door 20.
[0044] Figure 9 is a plan cross-sectional view of the vicinity of the door edge smoke-blocking section 300.
[0045] As shown in Figures 2 and 9, the door edge smoke barrier 300 comprises an airtight material 301 placed in the groove 24a of the door 20, a stopper 302 to prevent the airtight material 301 from coming out of the groove 24a, an airtight material 303 placed in the groove 40a of the vertical frame 40, and a stopper 304 to prevent the airtight material 303 from coming out of the groove 40a. Here, for one of the airtight material 301 and the other airtight material 303, the other constitutes a pressing portion. The door edge smoke barrier 300 is a smoke barrier that blocks the outflow of smoke from the gap between the door 20 and the vertical frame 40, which is the area near the door.
[0046] Figure 10 is an external perspective view of the airtight seal 301 when it is not positioned within the groove 24a of the door 20.
[0047] The airtight seal 301 is made of a cloth-like material formed from inorganic fibers such as high-silicic acid glass fibers or other artificial mineral fibers. As shown in Figure 10, the airtight seal 301 is formed in a sleeve shape when not placed in the groove 24a of the door 20.
[0048] As shown in Figures 2 and 9, the airtight seal 301 extends in the vertical direction indicated by arrow 10b. The length of the airtight seal 301 in the vertical direction indicated by arrow 10b is the same as the length of the door frame 24 in the vertical direction indicated by arrow 10b. The airtight seal 301 has a protruding portion 301a that protrudes in the same direction as the direction from the door edge to the door edge of the door 20 and is not directly fixed by the stopper 302. The protruding portion 301a has a pressed portion 301b which is the part against which the airtight seal 303 is pressed. Since the protruding portion 301a is formed so that the cloth-like material bends in a U shape, it has elasticity in the front-rear direction indicated by arrow 10c. Therefore, when the airtight seal 303 is pressed against the protruding portion 301a in the front-rear direction indicated by arrow 10c, the protruding portion 301a pushes back against the airtight seal 303 with its own elastic force, thereby making close contact with the airtight seal 303.
[0049] The stopper 302 extends in the vertical direction indicated by arrow 10b. The stopper 302 is, for example, a thin, plate-shaped steel member. The stopper 302 may also be used to fix the airtight seal 301 in the groove 24a of the door 20 by fixing it to the door frame 24 with a plurality of screws 302a arranged in the vertical direction indicated by arrow 10b, while sandwiching a portion of the airtight seal 301 between the stopper 302 and the door frame 24.
[0050] The airtight seal 303, like the airtight seal 301, is made of a cloth-like material formed from inorganic fibers such as high-silicic acid glass fibers or other artificial mineral fibers. Like the airtight seal 301, the airtight seal 303 is formed in a sleeve shape when not placed in the groove 40a of the vertical frame 40. The airtight seal 303 extends in the vertical direction indicated by arrow 10b. The length of the airtight seal 303 in the vertical direction indicated by arrow 10b is the same as the length of the airtight seal 301 in the vertical direction indicated by arrow 10b. The airtight seal 303 is installed so as to face the airtight seal 301 in a direction perpendicular to the vertical direction indicated by arrow 10b. The airtight seal 303 has a protruding portion 303a that protrudes in the same direction as the direction from the leading edge to the trailing edge of the door 20 and is not directly fixed by the stopper 302. The protruding portion 303a has a pressed portion 303b which is the part against which the airtight seal 301 is pressed. Since the protruding portion 303a is formed so that the cloth-like material bends in a U-shape, it has elasticity in the front-rear direction indicated by arrow 10c. Therefore, when the airtight material 301 is pressed against the protruding portion 303a in the front-rear direction indicated by arrow 10c, the protruding portion 303a pushes back against the airtight material 301 with its own elastic force, thereby making close contact with the airtight material 301.
[0051] The stopper 304 extends in the vertical direction indicated by arrow 10b. The stopper 304 is, for example, a thin, plate-shaped steel member. The stopper 304 secures the airtight material 303, which is located in the groove 40a of the vertical frame 40, by sandwiching a portion of the airtight material 303 between the vertical frame 40 and the vertical frame 40, and is fixed to the vertical frame 40 by, for example, multiple screws 304a arranged in the vertical direction indicated by arrow 10b.
[0052] Figure 11 is a plan cross-sectional view of a portion of the door 20, showing the airtight seal 401 of the lower smoke barrier 400.
[0053] As shown in Figures 3 and 11, the lower smoke-blocking section 400 comprises an airtight material 401 and a fixing member 402 for fixing the airtight material 401 to the lower frame 22 of the door 20. The lower smoke-blocking section 400 is a smoke-blocking section that prevents smoke from flowing out through the gap between the door 20 and the floor 90, which is the area near the door.
[0054] The airtight seal 401 is a component made of rubber. As shown in Figure 11, the airtight seal 401 is an L-shaped component having a portion extending in the left-right direction indicated by arrow 10a and a portion extending in the front-back direction indicated by arrow 10c. In Figure 3, the airtight seal 401 is depicted as not being in contact with the floor 90, but in reality, it is in contact with the floor 90.
[0055] Next, we will explain the operation of the automatic door 10.
[0056] Under normal circumstances, when the sensor 70 detects an object, the control device of the automatic door 10 causes the drive unit 80 to open the door 20, and when the sensor 70 no longer detects an object, it causes the drive unit 80 to close the door 20. Furthermore, in the event of an emergency such as a fire, when power is not supplied from the normal power source, or when the control device of the automatic door 10 stops using power from the normal power source in response to a fire alarm signal transmitted from the building, if the door 20 is opened manually, the automatic door 20 will be automatically closed by an electric or mechanical automatic closing mechanism (not shown) powered by an emergency power source.
[0057] When the door 20 is completely closed, the upper smoke-blocking section 100 is in close contact with the airtight seal 101 over the entire area of the airtight seal 101 in the left-right direction indicated by arrow 10a, as indicated by the pressing section 104. Therefore, the upper smoke-blocking section 100 can block the outflow of smoke from the top of the door 20.
[0058] Furthermore, when the door 20 is completely closed, the door-end smoke-blocking section 200 is in close contact with the airtight seal 201 over the entire area of the airtight seal 201 in the vertical direction indicated by arrow 10b. Therefore, the door-end smoke-blocking section 200 can block the outflow of smoke from the door-end of the door 20.
[0059] Furthermore, when the door 20 is completely closed, the door edge smoke barrier 300 is in close contact with the protruding portion 301a of the airtight material 301 over the entire area of the protruding portion 303a of the airtight material 303 in the vertical direction indicated by arrow 10b. Therefore, the door edge smoke barrier 300 can block the outflow of smoke at the door edge of the door 20.
[0060] Furthermore, in the door edge smoke-blocking section 300, the protruding portion 301a of the airtight material 301 is not directly fixed by the stopper 302, so the protruding portion 301a is deformable. Similarly, in the door edge smoke-blocking section 300, the protruding portion 303a of the airtight material 303 is not directly fixed by the stopper 304, so the protruding portion 303a is deformable. Therefore, when gas attempts to flow through the gap between the door edge frame 24 of the door 20 and the vertical frame 40, the flow of this gas pushes one of the protruding portions 301a of the airtight material 301 and the other of the airtight material 303, causing them to adhere more tightly to each other.
[0061] Furthermore, regardless of whether the door 20 is closed or not, the lower smoke barrier 400 has its airtight seal 401 in contact with the floor 90. Therefore, the lower smoke barrier 400 can block the outflow of smoke from the lower part of the door 20.
[0062] Figure 12 is a left side cross-sectional view of the vicinity of an upper smoke-blocking section 110, which is different from the upper smoke-blocking section 100 shown in Figure 4. Figure 13 is a left side cross-sectional view of the vicinity of an upper smoke-blocking section 120, which is different from both the upper smoke-blocking section 100 shown in Figure 4 and the upper smoke-blocking section 110 shown in Figure 12. Figure 14 is a left side cross-sectional view of the vicinity of an upper smoke-blocking section 130, which is different from both the upper smoke-blocking section 100 shown in Figure 4, the upper smoke-blocking section 110 shown in Figure 12, and the upper smoke-blocking section 120 shown in Figure 13.
[0063] In the above description, the automatic door 10 is provided with an upper smoke-blocking section 100 as an upper smoke-blocking section that blocks the outflow of smoke from the top of the door 20. However, the automatic door 10 may be provided with something other than the upper smoke-blocking section 100 as an upper smoke-blocking section that blocks the outflow of smoke from the top of the door 20. For example, the automatic door 10 may be provided with any of the following as an upper smoke-blocking section that blocks the outflow of smoke from the top of the door 20: the upper smoke-blocking section 110 shown in Figure 12, the upper smoke-blocking section 120 shown in Figure 13, the upper smoke-blocking section 130 shown in Figure 14, or a smoke-blocking section having a configuration similar to that of the door edge smoke-blocking section 300 shown in Figure 9, instead of the upper smoke-blocking section 100.
[0064] In Figure 12, the transom 60 comprises members 61 and 62 that form a groove 60a, and a plurality of screws 63 that fix members 61 and 62 to the main body of the transom 60. The plurality of screws 63 are arranged in a line in the left-right direction indicated by the arrow 10a. The upper smoke-blocking section 110 shown in Figure 12 is a smoke-blocking section with a configuration similar to that of the upper smoke-blocking section 100 (see Figure 4). That is, the upper smoke-blocking section 110 shown in Figure 12 comprises an airtight material 101 placed in the groove 60a of the transom 60, stoppers 112 and 113 to prevent the airtight material 101 from coming out of the groove 60a, and a pressing section 104 which is part of the upper frame 21 of the door 20 and is pressed against the airtight material 101.
[0065] The stopper 112 extends in the left-right direction indicated by arrow 10a (see Figure 1). The stopper 112 is formed by crushing and bending a portion of member 61.
[0066] The stopper 113 is positioned opposite the stopper 112 in the front-to-back direction indicated by arrow 10c, and extends in the left-to-right direction indicated by arrow 10a. The stopper 113 is formed by crushing and bending a portion of member 62.
[0067] The upper smoke-blocking section 120 shown in Figure 13 comprises an airtight material 121 positioned in the groove 60a of the transom 60, a stopper 122 to prevent the airtight material 121 from coming out of the groove 60a, and a pressing section 104 which is part of the upper frame 21 of the door 20 and is pressed against the airtight material 121.
[0068] The airtight material 121, like the airtight material 301, is made of a cloth-like material formed from inorganic fibers such as high-silicic acid glass fibers or other artificial mineral fibers. Like the airtight material 301, the airtight material 121 is formed in a sleeve shape when not placed in the groove 60a of the transom 60. The airtight material 121 extends in the left-right direction indicated by the arrow 10a (see Figure 1). The airtight material 121 has a pressed portion 121a, which is the part against which the pressing portion 104 is pressed. The airtight material 121 is elastic because it is sleeve-shaped. Therefore, when the pressing portion 104 is pressed against the airtight material 121, the airtight material 121 pushes back against the pressing portion 104 with its own elastic force, thereby making close contact with the pressing portion 104.
[0069] The stopper 122 extends in the left-right direction indicated by arrow 10a while inserted into the cavity of the airtight material 121. The stopper 122 is, for example, a thin, plate-shaped steel member. The stopper 122 may be fixed to the transom 60 by, for example, a plurality of screws 122a arranged in the left-right direction indicated by arrow 10a.
[0070] Figure 15 is a perspective view illustrating the method of fixing the airtight material 121 with the stopper 122.
[0071] As shown in Figure 15, the airtight material 121 may have a notch 121b in the portion opposite to the portion that is fixed by the screw 122a. The screw 122a can be inserted into the cavity of the airtight material 121 through the notch 121b, and the tip of a screwdriver (not shown) for tightening the screw 122a can be inserted into the cavity of the airtight material 121 through the notch 121b.
[0072] The upper smoke-blocking section 130 shown in Figure 14 comprises an airtight material 131 positioned in the groove 60a of the transom 60, a stopper 132 to prevent the airtight material 131 from coming out of the groove 60a, and a pressing section 104 which is part of the upper frame 21 of the door 20 and is pressed against the airtight material 131.
[0073] The airtight material 131, like the airtight material 301, is formed from a cloth-like material made of inorganic fibers such as high-silicic acid glass fibers or other artificial mineral fibers. Like the airtight material 301, the airtight material 131 is formed in a sleeve shape when not placed in the groove 60a of the transom 60. The airtight material 131 extends in the left-right direction indicated by arrow 10a (see Figure 1). The airtight material 131 has protruding portions 131a and 131c that protrude upward and are not directly fixed by the stopper 132, on both sides of the stopper 132 in the front-rear direction indicated by arrow 10c. Therefore, the airtight material 131 has protruding portions 131a and 131c on both sides of the pressing portion 104 in the front-rear direction indicated by arrow 10c. The protruding portion 131a has a pressed portion 131b which is the part that the pressing portion 104 is pressed against. The protruding portion 131c has a pressed portion 131d which is the part against which the pressing portion 104 is pressed. Each of the protruding portions 131a and 131c is formed so that the cloth-like material bends in a U-shape, and therefore has elasticity in the front-rear direction indicated by arrow 10c. Thus, when the pressing portion 104 is pressed against each of the protruding portions 131a and 131c, they push back against the pressing portion 104 with the elastic force of the protruding portion itself, thereby making close contact with the pressing portion 104.
[0074] The stopper 132 extends in the left-right direction indicated by the arrow 10a. The stopper 132 is, for example, a thin, plate-shaped steel member. The stopper 132 may be fixed to the transom 60 by a plurality of screws 132a arranged in the left-right direction indicated by the arrow 10a, while sandwiching a portion of the airtight material 131, which is located in the groove 60a of the transom 60, between the transom 60 and the stopper 132.
[0075] Figure 16(a) is a plan cross-sectional view of the vicinity of a door-end smoke-blocking section 210, which is different from the door-end smoke-blocking section 200 shown in Figure 7. Figure 16(b) is a plan cross-sectional view of the vicinity of a door-end smoke-blocking section 220, which is different from both the door-end smoke-blocking section 200 shown in Figure 7 and the door-end smoke-blocking section 210 shown in Figure 16(a). Figure 16(c) is a plan cross-sectional view of the vicinity of a door-end smoke-blocking section 230, which is different from both the door-end smoke-blocking section 200 shown in Figure 7, the door-end smoke-blocking section 210 shown in Figure 16(a), and the door-end smoke-blocking section 220 shown in Figure 16(b).
[0076] In the above description, the automatic door 10 is equipped with a door-end smoke-blocking section 200 as a door-end smoke-blocking section that blocks the outflow of smoke at the door-end of the door 20. However, the automatic door 10 may be equipped with something other than the door-end smoke-blocking section 200 as a door-end smoke-blocking section that blocks the outflow of smoke at the door-end of the door 20. For example, the automatic door 10 may be equipped with any of the following as a door-end smoke-blocking section that blocks the outflow of smoke at the door-end of the door 20: the door-end smoke-blocking section 210 shown in Figure 16(a), the door-end smoke-blocking section 220 shown in Figure 16(b), the door-end smoke-blocking section 230 shown in Figure 16(c), or a smoke-blocking section having a configuration similar to that of the door-end smoke-blocking section 300 shown in Figure 9, as a door-end smoke-blocking section that blocks the outflow of smoke at the door-end of the door 20.
[0077] In Figure 16(a), the mullion 31 comprises members 34 and 35 that form a groove 31a, and a plurality of screws 36 that fix members 34 and 35 to the main body of the mullion 31. The plurality of screws 36 are arranged in the vertical direction indicated by arrow 10b (see Figure 1). The door-end smoke-blocking section 210 shown in Figure 16(a) is a smoke-blocking section with a configuration similar to that of the upper smoke-blocking section 110 (see Figure 12). That is, the door-end smoke-blocking section 210 shown in Figure 16(a) comprises an airtight material 201 placed in the groove 31a of the mullion 31, stoppers 212 and 213 to prevent the airtight material 201 from coming out of the groove 31a, and a pressing section 204 which is part of the door-end frame 23 of the door 20 and is pressed against the airtight material 201.
[0078] The stopper 212 extends in the vertical direction indicated by arrow 10b. The stopper 212 is formed by crushing and bending a portion of member 34.
[0079] The stopper 213 is positioned opposite the stopper 212 in the front-to-back direction indicated by arrow 10c, and extends in the up-and-down direction indicated by arrow 10b. The stopper 213 is formed by crushing and bending a portion of member 35.
[0080] The door-end smoke-blocking section 220 shown in Figure 16(b) is a smoke-blocking section with a configuration similar to that of the upper smoke-blocking section 120 (see Figure 13). Specifically, the door-end smoke-blocking section 220 shown in Figure 16(b) comprises an airtight material 221 placed in the groove 31a of the mullion 31, a stopper 222 to prevent the airtight material 221 from coming out of the groove 31a, and a pressing portion 204 which is part of the door-end frame 23 of the door 20 and is pressed against the airtight material 221.
[0081] The airtight material 221, like the airtight material 301, is formed from a cloth-like material made of inorganic fibers such as high-silicic acid glass fibers or other artificial mineral fibers. Like the airtight material 301, the airtight material 221 is formed in a sleeve shape when not placed in the groove 31a of the mullion 31. The airtight material 221 extends in the vertical direction indicated by arrow 10b (see Figure 1). The airtight material 221 has a pressed portion 221a, which is the part against which the pressing portion 204 is pressed. The airtight material 221 is elastic because it is sleeve-shaped. Therefore, when the pressing portion 204 is pressed against it, the airtight material 221 adheres tightly to the pressing portion 204 by pushing back against it with its own elastic force.
[0082] The stopper 222 extends in the vertical direction indicated by arrow 10b while inserted into the cavity of the airtight material 221. The stopper 222 is, for example, a thin, plate-shaped steel member. The stopper 222 may be fixed to the mullion 31 by, for example, a plurality of screws 222a arranged in the vertical direction indicated by arrow 10b.
[0083] The airtight seal 221 may have a notch in the portion opposite to the portion that will be fixed by the screw 222a, similar to the airtight seal 121 shown in Figure 15. The screw 222a can be inserted into the cavity of the airtight seal 221 through the notch, and the tip of a screwdriver (not shown) for tightening the screw 222a can be inserted into the cavity of the airtight seal 221 through the notch.
[0084] The door-end smoke-blocking section 230 shown in Figure 16(c) is a smoke-blocking section with a configuration similar to that of the upper smoke-blocking section 130 (see Figure 14). Specifically, the door-end smoke-blocking section 230 shown in Figure 16(c) comprises an airtight material 231 placed in the groove 31a of the mullion 31, a stopper 232 to prevent the airtight material 231 from coming out of the groove 31a, and a pressing portion 204 which is part of the door-end frame 23 of the door 20 and is pressed against the airtight material 231.
[0085] The airtight material 231, like the airtight material 301, is formed from a cloth-like member made of inorganic fibers such as high-silicic acid glass fibers or other artificial mineral fibers. Like the airtight material 301, the airtight material 231 is formed in a sleeve shape when not placed in the groove 31a of the mullion 31. The airtight material 231 extends in the vertical direction indicated by arrow 10b (see Figure 1). The airtight material 231 has protruding parts 231a and 231c on both sides of the stopper 232 in the front-rear direction indicated by arrow 10c, which protrude in the same direction as the direction from the leading edge to the trailing edge of the door 20 and are not directly fixed by the stopper 232. Therefore, when the door 20 is closed, the protruding parts 231a and 231c of the airtight material 231 are positioned on both sides of the pressing part 204 in the front-rear direction indicated by arrow 10c. The protruding portion 231a has a pressed portion 231b which is the part against which the pressing portion 204 is pressed. The protruding portion 231c has a pressed portion 231d which is the part against which the pressing portion 204 is pressed. Each of the protruding portions 231a and 231c is formed so that the cloth-like material bends into a U shape, and therefore has elasticity in the front-rear direction indicated by arrow 10c. Thus, when the pressing portion 204 is pressed against each of the protruding portions 231a and 231c, they push back against the pressing portion 204 with the elastic force of the protruding portion itself, thereby making close contact with the pressing portion 204.
[0086] The stopper 232 extends in the vertical direction indicated by arrow 10b. The stopper 232 is, for example, a thin, plate-shaped steel member. The airtight material 231 may be fixed to the mullion 31 by a plurality of screws 232a arranged in the vertical direction indicated by arrow 10b, with the stopper 232 sandwiching a portion of the airtight material 231, which is located in the groove 31a of the mullion 31, in this manner.
[0087] Figure 17(a) is a plan cross-sectional view of the vicinity of a smoke-blocking section 310, which is different from the smoke-blocking section 300 shown in Figure 9. Figure 17(b) is a plan cross-sectional view of the vicinity of a smoke-blocking section 320, which is different from both the smoke-blocking section 300 shown in Figure 9 and the smoke-blocking section 310 shown in Figure 17(a).
[0088] In the above description, the automatic door 10 is equipped with a smoke-blocking section 300 at the edge of the door 20 to block the outflow of smoke. However, the automatic door 10 may be equipped with something other than the smoke-blocking section 300 to block the outflow of smoke at the edge of the door 20. For example, the automatic door 10 may be equipped with one of the following to block the outflow of smoke at the edge of the door 20: the smoke-blocking section 310 shown in Figure 17(a), the smoke-blocking section 320 shown in Figure 17(b), or a smoke-blocking section having a configuration similar to that of the upper smoke-blocking section 130 shown in Figure 14, to block the outflow of smoke at the edge of the door 20.
[0089] The door edge smoke barrier 310 shown in Figure 17(a) is a smoke barrier with a similar configuration to the upper smoke barrier 120 (see Figure 13), although it differs in the number of airtight seals. Specifically, the door edge smoke barrier 310 shown in Figure 17(a) comprises an airtight seal 311 placed in the groove 24a of the door 20, a stopper 312 to prevent the airtight seal 311 from coming out of the groove 24a, a pressing portion 313 which is part of the vertical frame 40 and is pressed against the airtight seal 311, an airtight seal 314 placed in the groove 40a of the vertical frame 40, a stopper 315 to prevent the airtight seal 314 from coming out of the groove 40a, and a pressing portion 316 which is part of the door edge frame 24 of the door 20 and is pressed against the airtight seal 314.
[0090] The airtight seal 311, like the airtight seal 301, is made of a cloth-like material formed from inorganic fibers such as high-silicic acid glass fibers or other artificial mineral fibers. Like the airtight seal 301, the airtight seal 311 is formed in a sleeve shape when not placed in the groove 24a of the door 20. The airtight seal 311 extends in the vertical direction indicated by arrow 10b (see Figure 1). The airtight seal 311 has a pressed portion 311a, which is the part against which the pressing portion 313 is pressed. The airtight seal 311 is elastic because it is sleeve-shaped. Therefore, when the pressing portion 313 is pressed against it, the airtight seal 311 adheres tightly to the pressing portion 313 by pushing back against it with the elastic force of the airtight seal 311 itself.
[0091] The stopper 312 extends in the vertical direction indicated by arrow 10b while inserted into the cavity of the airtight material 311. The stopper 312 is, for example, a thin, plate-shaped steel member. The stopper 312 may be fixed to the door frame 24 by a plurality of screws 312a arranged in the vertical direction indicated by arrow 10b.
[0092] The airtight seal 311 may have a notch in the portion opposite to the portion that will be fixed by the screw 312a, similar to the airtight seal 121 shown in Figure 15. The screw 312a can be inserted into the cavity of the airtight seal 311 through the notch, and the tip of a screwdriver (not shown) for tightening the screw 312a can be inserted into the cavity of the airtight seal 311 through the notch.
[0093] The pressing portion 313 may be formed by crushing and bending a part of the member constituting the vertical frame 40.
[0094] The airtight material 314, like the airtight material 301, is formed from a cloth-like material made of inorganic fibers such as high-silicic acid glass fibers or other artificial mineral fibers. Like the airtight material 301, the airtight material 314 is formed in a sleeve shape when not placed in the groove 40a of the vertical frame 40. The airtight material 314 extends in the vertical direction indicated by arrow 10b (see Figure 1). The airtight material 314 has a pressed portion 314a, which is the part against which the pressing portion 316 is pressed. The airtight material 314 is elastic because it is sleeve-shaped. Therefore, when the pressing portion 316 is pressed against it, the airtight material 314 adheres tightly to the pressing portion 316 by pushing back against it with its own elastic force.
[0095] The stopper 315 extends in the vertical direction indicated by arrow 10b while inserted into the cavity of the airtight material 314. The stopper 315 is, for example, a thin, plate-shaped steel member. The stopper 315 may be fixed to the vertical frame 40 by a plurality of screws 315a arranged in the vertical direction indicated by arrow 10b.
[0096] The airtight seal 314 may have a notch in the portion opposite to the portion that will be fixed by the screw 315a, similar to the airtight seal 121 shown in Figure 15. The screw 315a can be inserted into the cavity of the airtight seal 314 through the notch, and the tip of a screwdriver (not shown) for tightening the screw 315a can be inserted into the cavity of the airtight seal 314 through the notch.
[0097] The pressing portion 316 may also be formed by crushing and bending a part of the member that makes up the door frame 24 of the door 20.
[0098] The door edge smoke barrier 320 shown in Figure 17(b) is a smoke barrier with a similar configuration to the upper smoke barrier 100 (see Figure 4), although it differs in the number of airtight seals. In other words, as shown in Figure 17(b), the door edge smoke barrier 320 comprises an airtight seal 321 positioned in the groove 24a of the door 20, a stopper (not shown) to prevent the airtight seal 321 from coming out of the groove 24a, a pressing portion 313 which is part of the vertical frame 40 and is pressed against the airtight seal 321, an airtight seal 322 positioned in the groove 40a of the vertical frame 40, a stopper (not shown) to prevent the airtight seal 322 from coming out of the groove 40a, a pressing portion 316 which is part of the door edge frame 24 of the door 20 and is pressed against the airtight seal 322, an airtight seal 323 positioned in the groove 40b of the vertical frame 40, a stopper (not shown) to prevent the airtight seal 323 from coming out of the groove 40b, and a pressing portion 324 which is part of the door edge frame 24 of the door 20 and is pressed against the airtight seal 323.
[0099] The airtight material 321 is a blanket-shaped member formed from inorganic fibers such as alkali earth silicate (AES) or other artificial mineral fibers. The airtight material 321 extends in the vertical direction indicated by arrow 10b (see Figure 1). The airtight material 321 has a pressed portion 321a, which is the part against which the pressing portion 313 is pressed. The airtight material 321 is elastic due to its blanket shape. Therefore, when the pressing portion 313 is pressed against it, the airtight material 321 adheres tightly to the pressing portion 313 by pushing back against it with its own elastic force.
[0100] A stopper to prevent the airtight seal 321 from slipping out of the groove 24a of the door 20 may be formed, for example, by crushing and bending a part of the member that makes up the door frame 24 of the door 20.
[0101] The airtight material 322 is a blanket-shaped member formed from inorganic fibers such as alkali earth silicate (AES) or other artificial mineral fibers. The airtight material 322 extends in the vertical direction indicated by arrow 10b. The airtight material 322 has a pressed portion 322a, which is the part against which the pressing portion 316 is pressed. The airtight material 322 is elastic due to its blanket shape. Therefore, when the pressing portion 316 is pressed against it, the airtight material 322 adheres tightly to the pressing portion 316 by pushing back against it with its own elastic force.
[0102] A stopper to prevent the airtight material 322 from coming out of the groove 40a of the vertical frame 40 may be formed, for example, by crushing and bending a part of the member that makes up the vertical frame 40.
[0103] The airtight material 323 is a blanket-shaped member formed from inorganic fibers such as alkali earth silicate (AES) or other artificial mineral fibers. The airtight material 323 extends in the vertical direction indicated by arrow 10b. The airtight material 323 has a pressed portion 323a, which is the part against which the pressing portion 324 is pressed. The airtight material 323 is elastic due to its blanket shape. Therefore, when the pressing portion 324 is pressed against the airtight material 323, the airtight material 323 adheres tightly to the pressing portion 324 by pushing back against the pressing portion 324 with the elastic force of the airtight material 323 itself.
[0104] The pressing portion 324 may also be formed by crushing and bending a part of the member that makes up the door frame 24 of the door 20.
[0105] A stopper to prevent the airtight material 323 from coming out of the groove 40b of the vertical frame 40 may be formed, for example, by crushing and bending a part of the member that makes up the vertical frame 40.
[0106] Figure 18 is a front view of the automatic door 10 according to this embodiment when it is a sliding type. Figure 19 is a plan cross-sectional view of a part of the automatic door 10 shown in Figure 18.
[0107] In the above description, the automatic door 10 is a single-sliding type. However, the automatic door 10 may also be a double-sliding type, as shown in Figures 18 and 19.
[0108] Of the components of the automatic door 10 shown in Figure 18, those components that are the same as those of the automatic door 10 shown in Figure 1 are given the same reference numerals as those of the automatic door 10 shown in Figure 1, and detailed explanations are omitted.
[0109] The automatic door 10 shown in Figures 18 and 19 comprises a door 20 and a door 520 which are movable in the left-right direction indicated by arrow 10a, a fixed fixture 30 and a fixed fixture 530, a vertical frame 540 positioned on the tail end of the door 520 and extending in the vertical direction indicated by arrow 10b, a vertical frame 50 positioned on the tail end of the door 20 and extending in the vertical direction indicated by arrow 10b, a transom 60 positioned at the top, a guide rail (not shown) installed on the floor 90 and extending in the left-right direction indicated by arrow 10a, sensors 70 attached to the indoor and outdoor sides of the transom 60 for detecting objects, a drive device (not shown) housed within the transom 60 for driving the door 20 and the door 520, and a control device (not shown) housed within the transom 60 for controlling the drive device. The automatic door 10 shown in Figures 18 and 19 can prevent flames from escaping in the event of a fire and can function, for example, as a fire prevention device or a specific fire prevention device.
[0110] The door 520 comprises an upper frame 521 located at the top, a lower frame 522 located at the bottom, a tail frame 523 located on the door edge side, a door edge frame 524 located on the door edge side, a glass pane 525 fixed by the upper frame 521, lower frame 522, tail frame 523, and door edge frame 524, and a sway stopper fixed to the lower frame 522 and housed in a guide rail to prevent the door 520 from swaying in the front-to-back direction indicated by arrow 10c. The door edge frame 524 has a groove 524a and a groove 524b extending in the vertical direction indicated by arrow 10b. The grooves 524a and 524b each open in the same direction as the door 520 from the door edge to the door edge.
[0111] The Fix 530 comprises a mullion 531, a lower frame 532 positioned at the bottom, and a glass pane 533 fixed by the mullion 531, the lower frame 532, and the vertical frame 540.
[0112] The automatic door 10 shown in Figures 18 and 19 includes an upper smoke-blocking section 100 (see Figure 3) that blocks smoke from flowing out from the upper part of the door 20, a door-end smoke-blocking section 200 that blocks smoke from flowing out from the door-end of the door 20, a lower smoke-blocking section 400 (see Figure 3) that blocks smoke from flowing out from the lower part of the door 20, an upper smoke-blocking section (not shown) that blocks smoke from flowing out from the upper part of the door 520, a door-end smoke-blocking section 600 that blocks smoke from flowing out from the door-end of the door 520, a lower smoke-blocking section (not shown) that blocks smoke from flowing out from the lower part of the door 520, and a door-end smoke-blocking section 700 that blocks smoke from flowing out from the door-ends of the door 20 and door 520.
[0113] The configuration of the upper smoke-blocking section that prevents smoke from flowing out of the upper part of the door 520 is the same as the configuration of the upper smoke-blocking section 100 that prevents smoke from flowing out of the upper part of the door 20. The upper smoke-blocking section that prevents smoke from flowing out of the upper part of the door 520 is a smoke-blocking section that prevents smoke from flowing out from the gap between the door 520 and the transom 60, which is the area near the door. As described above, the automatic door 10 may be provided with something other than the upper smoke-blocking section 100 as the upper smoke-blocking section that prevents smoke from flowing out of the upper part of the door 20. Similarly, the automatic door 10 may be provided with something other than the upper smoke-blocking section that has the same configuration as the upper smoke-blocking section 100 as the upper smoke-blocking section that prevents smoke from flowing out of the upper part of the door 520.
[0114] The configuration of the door-end smoke-blocking section 600, which blocks the outflow of smoke at the door-end of door 520, is the same as the configuration of the door-end smoke-blocking section 200, which blocks the outflow of smoke at the door-end of door 20. The door-end smoke-blocking section 600 is a smoke-blocking section that blocks the outflow of smoke from the gap between door 520 and the mullion 531, which is the door-end portion. As described above, the automatic door 10 may be provided with something other than the door-end smoke-blocking section 200 as the door-end smoke-blocking section that blocks the outflow of smoke at the door-end of door 20. Similarly, the automatic door 10 may be provided with something other than the door-end smoke-blocking section 200, which has the same configuration as the door-end smoke-blocking section 200, as the door-end smoke-blocking section that blocks the outflow of smoke at the door-end of door 520.
[0115] The configuration of the lower smoke-blocking section that prevents smoke from escaping from the lower part of door 520 is the same as the configuration of the lower smoke-blocking section 400 that prevents smoke from escaping from the lower part of door 20. The lower smoke-blocking section that prevents smoke from escaping from the lower part of door 520 is a smoke-blocking section that prevents smoke from escaping from the gap between door 520 and the floor 90, which is the area near the door.
[0116] The configuration of the door edge smoke-blocking section 700, which blocks the outflow of smoke at the door edge of door 20 and door 520, is the same as the configuration of the door edge smoke-blocking section 300 (see Figure 2), which blocks the outflow of smoke at the door edge of door 20.
[0117] Figure 20(a) is a plan cross-sectional view of the vicinity of the door edge smoke-blocking section 700. Figure 20(b) is a plan cross-sectional view of the vicinity of a door edge smoke-blocking section 710, which is different from the door edge smoke-blocking section 700 shown in Figure 20(a). Figure 20(c) is a plan cross-sectional view of the vicinity of a door edge smoke-blocking section 720, which is different from both the door edge smoke-blocking section 700 shown in Figure 20(a) and the door edge smoke-blocking section 710 shown in Figure 20(b).
[0118] The automatic door 10 shown in Figure 18 may be equipped with something other than the smoke-blocking section 700 as a smoke-blocking section at the edge of doors 20 and 520 to block the outflow of smoke. For example, the automatic door 10 shown in Figure 18 may be equipped with one of the following as a smoke-blocking section at the edge of doors 20 and 520 to block the outflow of smoke: the smoke-blocking section 710 shown in Figure 20(b), the smoke-blocking section 720 shown in Figure 20(c), or a smoke-blocking section with a configuration similar to that of the upper smoke-blocking section 130 shown in Figure 14, instead of the smoke-blocking section 700.
[0119] The door edge smoke barrier 700 shown in Figures 19 and 20(a) is a smoke barrier with a configuration similar to that of the door edge smoke barrier 300 (see Figure 9). That is, as shown in Figures 19 and 20(a), the door edge smoke barrier 700 comprises an airtight material 301 placed in the groove 24a of the door 20, a stopper 302 to prevent the airtight material 301 from coming out of the groove 24a, an airtight material 303 placed in the groove 524a of the door 520, and a stopper 304 to prevent the airtight material 303 from coming out of the groove 524a. The door edge smoke barrier 700 is a smoke barrier that blocks the outflow of smoke from the gap between the door 20 and the door 520. Here, the door 20 is one of the door vicinity parts for the door 520, and the door 520 is one of the door vicinity parts for the door 20.
[0120] The door edge smoke barrier 710 shown in Figure 20(b) is a smoke barrier with a configuration similar to that of the door edge smoke barrier 310 (see Figure 17(a)). Specifically, the door edge smoke barrier 710 shown in Figure 20(b) comprises an airtight seal 311 placed in the groove 24a of the door 20, a stopper 312 to prevent the airtight seal 311 from coming out of the groove 24a, a pressing portion 313 which is part of the door edge frame 524 of the door 520 and is pressed against the airtight seal 311, an airtight seal 314 placed in the groove 524a of the door 520, a stopper 315 to prevent the airtight seal 314 from coming out of the groove 524a, and a pressing portion 316 which is part of the door edge frame 24 of the door 20 and is pressed against the airtight seal 314.
[0121] The door edge smoke barrier 720 shown in Figure 20(c) is a smoke barrier with a configuration similar to that of the door edge smoke barrier 320 (see Figure 17(b)). That is, as shown in Figure 20(c), the door edge smoke barrier 720 consists of an airtight seal 321 placed in the groove 24a of the door 20, a stopper (not shown) to prevent the airtight seal 321 from coming out of the groove 24a, a pressing portion 313 which is part of the door edge frame 524 of the door 520 and is pressed against the airtight seal 321, an airtight seal 322 placed in the groove 524a of the door 520, and a stopper to prevent the airtight seal 322 from coming out of the groove 524a The door 520 includes a stopper (not shown) to prevent it from coming out, a pressing portion 316 which is part of the door frame 24 of the door 20 and is pressed against the airtight material 322, an airtight material 323 which is placed in the groove 524b of the door 520, a stopper (not shown) to prevent the airtight material 323 from coming out of the groove 524b, and a pressing portion 324 which is part of the door frame 24 of the door 20 and is pressed against the airtight material 323.
[0122] As explained above, since the airtight material in the upper smoke-blocking section, door-end smoke-blocking section, and door-edge smoke-blocking section of the automatic door 10 is made of inorganic fibers, the possibility of the airtight material burning in the event of a fire can be reduced, and as a result, the possibility of preventing smoke from escaping by the airtight material in the event of a fire can be improved. Therefore, the automatic door 10 can improve its smoke-blocking performance.
[0123] In the automatic door 10, if a cloth-like member made of inorganic fibers, such as the upper smoke-blocking sections 120, 130, the door-end smoke-blocking sections 220, 230, and the door-edge smoke-blocking sections 300, 310, 700, 710, is used as the airtight material, the airtight material is less prone to wear, thus improving the durability of the smoke-blocking sections. This is because the airtight material is less likely to wear down compared to a configuration where a blanket-like member made of inorganic fibers, such as the upper smoke-blocking sections 100, 110, the door-end smoke-blocking sections 200, 210, 600, and the door-edge smoke-blocking sections 320, 720, is used as the airtight material.
[0124] In the automatic door 10, for example, when the pressing portion in the front-to-back direction indicated by arrow 10c, such as the upper smoke-blocking portion 130, the door-end smoke-blocking portion 230, and the door-edge smoke-blocking portions 300 and 700, is pressed against the protruding portion of the airtight member, when gas attempts to flow through the gap between the door and the area near the door, this gas flow pushes the protruding portion of the airtight material, causing the pressed portion to adhere tightly to the pressing portion, thereby improving airtightness.
[0125] In the automatic door 10, when a cloth-like member formed of inorganic fibers, such as the door edge smoke-blocking section 300, 700, is bent, the elastic airtight seals press against each other, and the airtight seals become tightly sealed as they press against each other, thus improving airtightness.
[0126] In the case of the automatic door 10, for example, if the airtight seal is provided with protrusions on both sides of the pressing portion in the front-to-back direction indicated by arrow 10c, such as the upper smoke-blocking portion 130 and the door-end smoke-blocking portion 230, when gas attempts to flow through the gap between the door and the area near the door, regardless of which direction the gas flow is in that intersects the extending direction of the door, the gas flow will push one of the protrusions on either side of the pressing portion, causing the pressed portion to come into close contact with the pressing portion, thereby improving airtightness.
[0127] The automatic door 10 has a structure in which the roller and stopper on the door side can move slightly, for example, a few millimeters, in the front-to-back direction indicated by arrow 10c, which intersects the direction in which the door extends with respect to the rail 81 and the guide rail, respectively. For example, the wind pressure acting on the door may cause the door to move slightly, for example, a few millimeters, in the front-to-back direction indicated by arrow 10c. If the automatic door 10 has protrusions on both sides of the pressing part in the front-to-back direction indicated by arrow 10c, such as the upper smoke-blocking part 130 and the door-end smoke-blocking part 230, even when the door moves slightly in the front-to-back direction indicated by arrow 10c, at least one of the pressed parts of the protrusions on both sides of the pressing part will be in close contact with the pressing part, thereby improving airtightness.
[0128] In the automatic door 10, if blanket-like members formed of inorganic fibers are used as airtight materials, such as the upper smoke-blocking sections 100, 110, the door-end smoke-blocking sections 200, 210, 600, and the door-edge smoke-blocking sections 320, 720, then the assembly work can be simplified compared to a configuration in which cloth-like members formed of inorganic fibers that have elasticity when bent are used as airtight materials, such as the upper smoke-blocking sections 120, 130, the door-end smoke-blocking sections 220, 230, and the door-edge smoke-blocking sections 300, 310, 700, 710.
[0129] In automatic door 10, if a seal is provided on the door that moves when opening and closing, vibrations are applied to the seal when the door opens and closes. This can cause the seal to detach from the door due to vibrations, or the screws that secure the seal to the door to loosen due to vibrations. In automatic door 10, if a seal is provided near the door, such as seals 101, 121, 131, 201, 221, 231, 303, 314, 322, and 323, the vibrations applied to the seal when the door opens and closes can be reduced compared to a configuration where the seal is provided on the door that moves when opening and closing, thereby improving the durability of the smoke-blocking section. Note that automatic door 10 may also have a seal provided on the door that moves when opening and closing.
[0130] Figure 21 is a left side cross-sectional view of the vicinity of the upper smoke-blocking section 130, showing a modified example of the upper smoke-blocking section 130 shown in Figure 14.
[0131] The upper smoke-blocking section 130 may have a configuration other than that shown in Figure 14, except for the protruding part. For example, the upper smoke-blocking section 130 may have the configuration shown in Figure 21. The upper smoke-blocking section 130 shown in Figure 21 includes airtight materials 133 and 134 placed in the groove 60a of the transom 60, a stopper 132 to prevent the airtight materials 133 and 134 from coming out of the groove 60a, and a pressing part 104 which is part of the upper frame 21 of the door 20 and is pressed against the airtight materials 133 and 134.
[0132] Each of the airtight materials 133 and 134, like the airtight material 301, is formed from a cloth-like material made of inorganic fibers such as high-silicic acid glass fibers or other artificial mineral fibers. Each of the airtight materials 133 and 134, like the airtight material 301, is formed in a sleeve shape when not placed in the groove 60a of the transom 60. Each of the airtight materials 133 and 134 extends in the left-right direction indicated by arrow 10a (see Figure 1). The airtight material 133 has a projection 133a that protrudes upward and is not directly fixed by the stopper 132, on one side of the stopper 132 in the front-rear direction indicated by arrow 10c. The airtight material 134 has a projection 134a that protrudes upward and is not directly fixed by the stopper 132, on one side of the stopper 132 in the front-rear direction indicated by arrow 10c. Therefore, the protrusions 133a and 134a are positioned on both sides of the pressing portion 104 in the front-rear direction indicated by arrow 10c. Protrusion 133a has a pressed portion 133b which is the part against which the pressing portion 104 is pressed. Protrusion 134a has a pressed portion 134b which is the part against which the pressing portion 104 is pressed. Each of the protrusions 133a and 134a is formed so that the cloth-like material bends in a U-shape, and therefore has elasticity in the front-rear direction indicated by arrow 10c. Therefore, when the pressing portion 104 is pressed against each of the protrusions 133a and 134a, they push back against the pressing portion 104 with the elastic force of the protrusions themselves, thereby making close contact with the pressing portion 104.
[0133] The above describes the upper smoke-blocking section 130. However, the door-end smoke-blocking section 230 shown in Figure 16(c) may also have configurations other than those shown in Figure 16(c), except for the protruding section.
[0134] As shown in Figure 9, the door edge smoke barrier 300 has one airtight point using airtight material. As shown in Figure 17(a), the door edge smoke barrier 310 has two airtight points using airtight material, achieving double airtightness. As shown in Figure 17(b), the door edge smoke barrier 310 has three airtight points using airtight material, achieving triple airtightness. In the automatic door 10, each smoke barrier may have one or multiple airtight points using airtight material.
[0135] In this embodiment, the automatic door 10 has a lower smoke-blocking section that prevents smoke from escaping from the bottom of the door, and the airtight seal is made of rubber. However, in the automatic door 10, the lower smoke-blocking section that prevents smoke from escaping from the bottom of the door may be a smoke-blocking section with a configuration similar to that of the upper smoke-blocking section, the door-end smoke-blocking section, and the door-front smoke-blocking section.
[0136] In this embodiment, the automatic door 10 is equipped with a fixed section. However, the fixed section of the automatic door 10 may also be a wall. [Explanation of symbols]
[0137] 10 Automatic Doors 10c Arrow (Arrow indicating a direction perpendicular to the door's extension direction) 20 Doors (near the doors) 31. Mullion (near the door) 40. Vertical frame (near the door) 60. No-frame (near the door) 100 Upper smoke-blocking section (smoke-blocking section) 101 Airtight material 101a Pressed part 104 Pressing part 110, 120 Upper smoke-blocking section (smoke-blocking section) 121 Airtight material 121a Pressed part 130 Upper smoke-blocking section (smoke-blocking section) 131 Airtight material 131a Protrusion 131b Pressed part 131c Protrusion 131d Pressed part 133 Airtight material 133a Protrusion 133b Pressed part 134 Airtight material 134a Protrusion 134b Pressed part 200 Door-end smoke-blocking section (smoke-blocking section) 201 Airtight material 201a Pressed part 204 Pressing part 210, 220 Door-end smoke-blocking section (smoke-blocking section) 221 Airtight material 221a Pressed part 230 Door-end smoke-blocking section (smoke-blocking section) 231 Airtight material 231a Protrusion 231b Pressed part 231c Protrusion 231d Pressed part 300 Smoke-blocking section at the door (smoke-blocking section) 301 Airtight seal (pressure-fitting part) 301a Protrusion 301b Pressed part 303 Airtight seal (pressure-fitting part) 303a Protrusion 303b Pressed part 310 Smoke blocking section (smoke blocking section) 311 Airtight material 311a Pressed part 313 Pressing part 314 Airtight material 314a Pressed part 316 Pressing part 320 Smoke blocking section (smoke blocking section) 321 Airtight material 321a Pressed part 322 Airtight material 322a Pressed part 323 Airtight material 323a Pressed part 324 Pressing part 520 Door (near the door) 531 Mullion (near door) 600 Door-end smoke-blocking section (smoke-blocking section) 700, 710, 720 Smoke blocking section (smoke blocking section)
Claims
1. It includes a smoke-blocking section that prevents smoke from leaking out through the gap between the door and the door vicinity section, which is the part of the door that is near the door. The smoke-blocking section is, An airtight material provided on either the door or the area near the door, A pressing portion is provided on the other side of the door and the vicinity of the door, which is pressed against the airtight material. Equipped with, The aforementioned airtight material is formed of inorganic fibers, and the pressing portion has elasticity in the portion that is pressed against the pressing portion. The aforementioned airtight material is a cloth-like member formed of inorganic fibers, which, when bent, has elasticity in the part being pressed against. The aforementioned airtight material comprises a fabric-like member formed from inorganic fibers, which has elastic protrusions when bent. The automatic door is characterized in that the protruding portion includes the pressed portion against which the pressing portion is pressed in a direction intersecting the extending direction of the door.
2. The automatic door according to claim 1, characterized in that the pressing portion is made of an inorganic fiber, and the portion that is pressed against the pressed portion is elastic when the cloth-like member is bent.
3. It includes a smoke-blocking section that prevents smoke from leaking out through the gap between the door and the door vicinity section, which is the part of the door that is near the door. The smoke-blocking section is, An airtight material provided on either the door or the area near the door, A pressing portion is provided on the other side of the door and the vicinity of the door, which is pressed against the airtight material. Equipped with, The aforementioned airtight material is formed of inorganic fibers, and the pressing portion has elasticity in the portion that is pressed against the pressing portion. The aforementioned airtight material is a cloth-like member formed of inorganic fibers, which, when bent, has elasticity in the part being pressed against. The aforementioned airtight material comprises a fabric-like member formed from inorganic fibers, which has elastic protrusions when bent. The protruding portion includes the pressed portion against which the pressing portion is pressed in a direction intersecting the extending direction of the door, The automatic door is characterized in that the protruding portions are arranged on both sides of the pressing portion in a direction intersecting the extending direction of the door.
4. It includes a smoke-blocking section that prevents smoke from leaking out through the gap between the door and the door vicinity section, which is the part of the door that is near the door. The smoke-blocking section is, An airtight material provided on either the door or the area near the door, A pressing portion is provided on the other side of the door and the vicinity of the door, which is pressed against the airtight material. Equipped with, The aforementioned airtight material is formed of inorganic fibers, and the pressing portion has elasticity in the portion that is pressed against the pressing portion. The smoke-blocking section is, The door-side airtight material, which serves as the airtight material, is provided on the door. The door-side pressing portion is provided near the door and is pressed against the door-side airtight seal, The door-side airtight seal, which is provided near the door, The door-side pressing portion is provided on the door and is pressed against the airtight seal near the door, and Equipped with, An automatic door characterized in that the door-side airtight seal and the door-side pressing portion are arranged side by side in a direction intersecting the extending direction of the door.