Shutter device and panel member

Abstract

To provide a vertically movable shutter device and a panel material capable of smoothly shifting from a storage state to a partition state.SOLUTION: This shutter device is a vertically movable shutter device for forming a partition wall for partitioning a space in a building into two spaces by a plurality of panel materials 21. The panel material 21 has a metallic front surface material 31, and a first main surface sheet 51A and an expandable fire-resistant second sheet 52 which cover the front surface of the front surface material 31 and expand by being heated when fire occurs. The shutter device has a storage state in which the panel material 21 is stored in the storage space. The panel materials 21L, 21R adjacent to each other in a storage state are stored in a state that panel surfaces 211212, formed by the foaming fireproof second sheet 52 are opposed to each other. The foaming fireproof second sheet 52 is attached to the surface material 31 by a pan drill screw 56.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to a vertically movable shutter device that divides the space within a building to prevent the spread of fire from other compartments, and to a panel material used in the shutter device. [Background technology]

[0002] Conventionally, shutter devices that divide and partition the space inside a building depending on the situation have been known. For example, Patent Document 1 discloses a shutter device having multiple panel materials. This shutter device has a storage state in which the multiple panel materials are stored in the space inside the ceiling, and a partition state in which the multiple panel materials divide the space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-274763 Summary of the Invention [Problem to be solved by the invention]

[0004] The shutter device described above is required to have improved heat insulation as well as flame insulation properties in order to prevent the spread of fire and ensure evacuation routes in the event of a fire. Such heat insulation properties can be achieved by covering the front and back surfaces of the panel material with intumescent fire-resistant sheets. However, if the contact area between the intumescent fire-resistant sheets becomes large in the stored state, the adhesive force between the intumescent fire-resistant sheets increases, which may prevent a smooth transition from the stored state to the compartment state. [Means for solving the problem]

[0005] The shutter device that solves the above problem is a vertically movable shutter device that uses multiple panel materials to form a partition wall that divides the space inside a building into two spaces, and the panel materials have a metal surface material and an intumescent fire-resistant covering material that is attached to the surface material with mounting members, covers the surface of the surface material, and expands when heated in the event of a fire.The shutter device has a storage state in which the panel materials are stored in a storage space with the intumescent fire-resistant covering materials facing each other.The mounting members have protrusions that protrude from the intumescent fire-resistant covering materials. [Effects of the Invention]

[0006] According to the present invention, the transition from the storage state to the compartment state can be carried out smoothly. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view schematically illustrating an embodiment of a shutter device. [Figure 2] FIG. 2 is a diagram illustrating a schematic configuration of a shutter device. [Figure 3] FIG. 3 is a diagram showing a schematic cross-sectional structure of the panel material. [Figure 4] FIG. 4 is a cross-sectional view showing a schematic configuration of an intumescent fire-resistant covering material. [Figure 5] FIG. 5 is a cross-sectional view illustrating the configuration of the first intumescent fire-resistant sheet. [Figure 6] FIG. 6 is a cross-sectional view showing the structure for attaching the first sheet to the surface material. [Figure 7] FIG. 7 is a plan view showing the attachment position of the first sheet relative to the surface material. [Figure 8] FIG. 8 is a cross-sectional view showing the structure for attaching the second sheet to the surface material. [Figure 9] FIG. 9 is a plan view showing the attachment position of the second sheet relative to the surface material. [Figure 10] FIG. 10 is a diagram showing a schematic view of a boundary portion between adjacent panel materials in a stored state. [Figure 11] FIG. 11 is a diagram showing the width and height of the partition wall used in the heat insulation test, as well as the positions of the thermocouples installed on the non-heated surface side. [Figure 12] FIG. 12(a) is a diagram showing a schematic diagram of the installation position of the measurement unit, and FIG. 12(b) is a diagram showing a schematic diagram of the configuration of the measurement unit as viewed from the non-heated surface side. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment of a shutter device and a panel material will be described with reference to FIGS. As shown in Fig. 1, shutter device 20 is configured to be able to divide the space inside a building into two spaces. Specifically, shutter device 20 divides space 15, which is formed by floor 11, ceiling 12, and wall 13, into two spaces using a plurality of vertically arranged panel materials 21. Walls 13 that have the ability to block the spread of fire are used around shutter device 20.

[0009] The shutter device 20 is a vertically movable shutter device. The shutter device 20 has a storage state in which a plurality of panel materials 21 are stored in a storage space 19 (see FIG. 2) provided in a ceiling space 17 (see FIG. 2), and a partition state in which a partition wall 30 formed by the plurality of panel materials 21 partitions a space 15 below the ceiling space 17. The storage space 19 is a space in which the plurality of panel materials 21 are stored, and is formed by a shutter box (not shown) or the like. In the space 15, the plurality of panel materials 21 move along guide rails 22 provided on the wall 13 and extending in the vertical direction.

[0010] The shutter device 20 transitions from the storage state to the compartment state as the panel materials 21 stored in the storage space 19 provided in the ceiling space 17 move in order to the space 15 through the opening 16 provided in the ceiling 12. The shutter device 20 transitions from the compartment state to the storage state as the panel materials 21 arranged in the space 15 move in order to the storage space 19 through the opening 16 provided in the ceiling 12.

[0011] The shutter device 20 transitions between the storage state and the compartment state by operating an operation panel 23 provided on the wall 13. In addition, the shutter device 20 transitions to the compartment state when a predetermined condition is satisfied in the storage state, such as the occurrence of a fire.

[0012] As shown in FIG. 2, the shutter device 20 includes a control panel 25, an opening / closing device 26, and a fire detector 27. The control panel 25 is a device that controls the state transitions of the shutter device 20. The control panel 25 is mainly composed of, for example, a microcontroller in which a processor, memory, input interface, output interface, etc. are connected to one another via a bus. The control panel 25 acquires various signals, such as operation signals from the operation panel 23 and detection signals from the fire detector 27, via the input interface. The control panel 25 then executes various processes that control the state transitions of the shutter device 20 based on the acquired various signals, as well as programs and various data stored in the memory. For example, the control panel 25 executes a process to move the panel material 21 based on the operation of the operation panel 23.

[0013] The opening / closing device 26 is disposed in the ceiling space 17. The opening / closing device 26 moves the panel materials 21 in response to commands from a control panel 25. The opening / closing device 26 is fixed to a partition wall 18 above the wall 13, which defines the ceiling space 17. The partition wall 18 is formed, for example, of reinforced concrete and has flame-resistant and heat-resistant properties. The opening / closing device 26 is supported by a beam formed of a steel frame or reinforced concrete via the partition wall 18. The opening / closing device 26 has a pair of brackets (not shown) arranged to sandwich the multiple panel materials 21 in the longitudinal direction. The brackets support an electric motor that rotates forward or backward in response to commands from the control panel 25, a transmission mechanism that transmits the torque of the electric motor to each panel material 21, and a guide mechanism that guides the movement of the panel materials 21 within the ceiling space 17. The opening / closing device 26 may be fixed to a partition beam formed of a steel frame or reinforced concrete that defines the ceiling space 17, rather than to the partition wall 18.

[0014] The fire detector 27 detects a fire in the space 15. When the fire detector 27 detects a fire, it outputs a detection signal to the control panel 25. Upon receiving the detection signal, the control panel 25 executes a process to transition the shutter device 20 from the stored state to the partition state.

[0015] (Panel material) As shown in FIG. 3, the panel materials 21 that constitute the partition wall 30 in the partitioned state are separated into an intermediate panel material 21M, a bottom panel material 21B, and a top panel material 21T. In each panel material 21, the surface facing the right side in FIG. 3 is referred to as a first panel surface 211, and the surface facing the left side in FIG. 3 is referred to as a second panel surface 212. The intermediate panel material 21M is the panel material 21 disposed between the bottom panel material 21B and the top panel material 21T. The bottom panel material 21B is the panel material 21 disposed in the lowest row. The top panel material 21T is the panel material 21 disposed in the highest row. Hereinafter, when there is no need to distinguish between the intermediate panel material 21M, the bottom panel material 21B, and the top panel material 21T, they will simply be referred to as panel materials 21. In addition, in FIG. 3, the intermediate panel material 21M is indicated by a solid line, and the bottom panel material 21B and the top panel material 21T are indicated by a two-dot chain line.

[0016] Each panel material 21 has a hollow metal surface material 31. The surface material 31 is produced by combining various members formed into desired shapes by extrusion processing of metal materials such as aluminum or steel, using various joining methods such as welding.

[0017] In the intermediate panel material 21M, the surface material 31 has an upper fitting protrusion 32, an upper fitting recess 33, a lower fitting protrusion , and a lower fitting recess . The upper fitting protrusion 32 is provided so as to protrude upward from the upper left side of the intermediate panel material 21M in Fig. 3. The upper fitting recess 33 is provided so as to cut out the upper right side of the intermediate panel material 21M in Fig. 3. The lower fitting protrusion 34 is provided so as to protrude downward from the lower right side of the intermediate panel material 21M in Fig. 3. The lower fitting recess 35 is provided so as to cut out the lower left side of the intermediate panel material 21M in Fig. 3.

[0018] In the partitioned state, the upper fitting protrusion 32 fits into the lower fitting recess 35 of the panel material 21 located in the upper tier. The upper fitting protrusion 32 and the lower fitting recess 35 form a joint portion 36. The lower fitting protrusion 34 fits into the upper fitting recess 33 of the panel material 21 located in the lower tier. The lower fitting protrusion 34 and the upper fitting recess 33 form a joint portion 37.

[0019] The intermediate panel material 21M has an upper seal material 38 and a lower seal material 39. The upper seal material 38 is provided at the base end of the upper fitting protrusion 32. The lower seal material 39 is provided at the base end of the lower fitting protrusion 34. The upper seal material 38 and the lower seal material 39 are formed from a fire-resistant material. In the partitioned state, the upper seal material 38 seals the gap with the panel material 21 in the upper row. The lower seal material 39 seals the gap with the panel material 21 in the lower row.

[0020] The intermediate panel material 21M also has a setting block 40 that functions as a buffer between the intermediate panel material 21M and the adjacent panel material 21 in the vertical direction. The setting block 40 is provided adjacent to the upper seal material 38 or the lower seal material 39. In the intermediate panel material 21M shown in FIG. 3, the setting block 40 is provided adjacent to the upper seal material 38.

[0021] In the bottom panel material 21B, the surface material 31 has an upper fitting protrusion 32 and an upper fitting recess 33. When in the partitioned state, the upper fitting protrusion 32 and the upper fitting recess 33 of the bottom panel material 21B fit into the lower fitting recess 35 and the lower fitting protrusion 34 of the intermediate panel material 21M arranged on the upper level of the bottom panel material 21B, respectively. In addition, an upper sealing material 38 and a setting block 40 are provided on the bottom panel material 21B.

[0022] A bottom base 45 is joined to the bottom end of the surface material 31 of the bottom panel material 21B. The bottom base 45 is made by joining various members formed into desired shapes by extrusion processing of metal materials such as aluminum or steel. A bottom seal 46 is attached to the bottom base 45 to seal the gap between it and the floor 11 when in a compartmented state.

[0023] In the top panel material 21T, the surface material 31 has a lower fitting protrusion 34 and a lower fitting recess 35. When in the partitioned state, the lower fitting protrusion 34 and the lower fitting recess 35 of the top panel material 21T fit into the upper fitting recess 33 and the upper fitting protrusion 32 of the intermediate panel material 21M arranged below the top panel material 21T, respectively. The top panel material 21T also has a lower sealing material 39.

[0024] The panel material 21 has an intumescent fire-resistant coating material 50 covering the surface of the facing material 31. The surface of the facing material 31 refers to the portion of the outer surface of the facing material 31 that is visible from the outside when not covered with the intumescent fire-resistant coating material 50. In each panel material 21, the surface of the facing material 31 that faces the right or left side in FIG. 3 , excluding the joints 36 and 37, is referred to as the main surface 31A. The intumescent fire-resistant coating material 50 protects the facing material 31 by foaming when heated during a fire to form a carbonized insulating layer. The intumescent fire-resistant coating material 50 is also provided inside the joints 36 and 37, i.e., on the surface that forms the joints 36 and 37. The intumescent fire-resistant coating material 50 is composed of an intumescent fire-resistant sheet such as SK Taica Sheet (registered trademark) manufactured by SK Chemical Co., Ltd. Preferably, the intumescent fire-resistant coating material 50 foams to a thickness of 60 mm or more. It is more preferable that the intumescent fire-resistant covering material 50 be foamed to a thickness of about 90 mm.

[0025] The panel material 21 may have a non-combustible heat insulating material 55 filled inside the surface material 31. The non-combustible heat insulating material 55 may be formed from, for example, multiple calcium silicate boards, rock wool, Makibee (registered trademark) manufactured by Nichias Corporation, which uses heat-resistant rock wool, ceramic fiber, or the like.

[0026] (Details of intumescent fireproof coating material) As shown in FIG. 4, in this embodiment, the intumescent fire-resistant covering material 50 includes an intumescent fire-resistant first sheet 51 (hereinafter simply referred to as "first sheet 51") and an intumescent fire-resistant second sheet 52 (hereinafter simply referred to as "second sheet 52"). The first sheet 51 is provided so as to cover the entire surface of the facing material 31. The second sheet 52 is provided so as to cover the first sheet 51. The first sheet 51 has a thickness greater than that of the second sheet 52. The thickness of the first sheet 51 is, for example, 3 mm. The thickness of the second sheet 52 is, for example, 1.5 mm.

[0027] 5, the first sheet 51 has a first main surface sheet 51A that covers the main surface 31A of the surface material 31, and a first joint sheet 51B that covers the surface of the surface material 31 in the joint portions. Each of the sheets 51A and 51B is attached to the surface material 31 with a heat-resistant adhesive or the like.

[0028] As shown in FIG. 6 , the first main face sheet 51A is attached to the surface material 31 by a countersunk drill screw 53. The countersunk drill screw 53 is driven into the surface material 31 through a washer 54 and the first main face sheet 51A. The washer 54 may be any type that engages with the head of the countersunk drill screw 53. It is preferable that the washer 54 is for a screw with a larger nominal diameter than the countersunk drill screw 53. For example, the countersunk drill screw 53 has a nominal diameter of 4 mm and a length of 13 mm. For a countersunk drill screw with a nominal diameter of 4 mm, it is preferable that the washer have a nominal diameter of 7 mm.

[0029] 7, the first main face sheet 51A is attached to the surface material 31 at a first vertical pitch Pv1, based on a position that is a first vertical distance Dv1 below the upper first joint sheet 51B. The first vertical distance Dv1 is preferably 100 mm or less, and more preferably 70 mm or less. The first vertical pitch Pv1 is preferably 250 mm or less, and more preferably about 200 mm.

[0030] In the left-right direction, the first main surface sheet 51A is attached to the surface material 31 at a first left-right pitch Ph1, based on a position that is a first left-right distance Dh1 away from the end of the surface material 31. The first left-right distance Dh1 may be the same at the left end and the right end, or may be different at the left end and the right end. The first left-right distance Dh1 is preferably 250 mm or less. The first left-right pitch Ph1 does not need to be the same value for all ends, and may be a different value depending on design conditions (such as the dimensions of the foam fire-resistant sheet that constitutes the first sheet 51). The first left-right pitch Ph1 is preferably 1000 mm or less, and more preferably 500 mm or less.

[0031] As shown in FIG. 8 , the second sheet 52 is attached to the first main face sheet 51A with a heat-resistant adhesive or the like, and then attached to the surface material 31 with a pan head drill screw 56. The pan head drill screw 56 is an attachment member having a head (protruding portion) that protrudes from the second sheet 52. The pan head drill screw 56 is driven into the surface material 31 through a washer 58, the second sheet 52, and the first main face sheet 51A. The pan head drill screw 56 attaches both the first main face sheet 51A and the second sheet 52 to the surface material 31. The pan head drill screw 56 has, for example, a nominal diameter of 4 mm and a length of 19 mm. The washer 58 may be any type that can engage with the head of the pan head drill screw 56. It is preferable that the washer 58 be the same size as the washer 54 from the standpoints of improving workability and reducing costs.

[0032] The heads of the pan head drill screws 56 are covered by non-combustible patches 57. The non-combustible patches 57 may be, for example, insulating glass tape that is 3 mm thick and 50 mm wide. The non-combustible patches 57 are attached with a heat-resistant adhesive. Covering the heads of the pan head drill screws 56 with the non-combustible patches 57 improves the design of the panel material 21 and, ultimately, the partition wall 30. By using the pan head drill screws 56 to attach the second sheet 52, convex portions are formed on the panel surfaces 211, 212 of each panel material 21 by the heads of the pan head drill screws 56.

[0033] 9, in the vertical direction of the middle panel material 21M and the bottom panel material 21B, the second sheet 52 is attached to the surface material 31 at a second vertical pitch Pv2, based on a position that is a second vertical distance Dv2 below the upper first joint sheet 51B. The second vertical distance Dv2 is preferably 100 mm or less, and more preferably 70 mm or less. The second vertical pitch Pv2 is preferably 250 mm or less, and more preferably about 200 mm.

[0034] Meanwhile, in the vertical direction of the top panel material 21T, the second sheet 52 is attached to the surface material 31 at a second vertical pitch Pv2, based on a position that is a second vertical distance Dv2 away from the lower first joint sheet 51B. This allows the second sheet 52 to be attached to the surface material 31 in a portion close to the opening 16 (see FIG. 1) when in the partitioned state.

[0035] In addition, in the left-right direction, the second sheets 52 are attached to the surface material 31 at a second left-right pitch Ph2, based on a position that is a second left-right distance Dh2 away from the end of the surface material 31. The second left-right distance Dh2 is smaller than the first left-right distance Dh1. The second left-right distance Dh2 may be the same on the right side and the left side, or may be different values. The second left-right distance Dh2 is preferably 100 mm or less, and more preferably 60 mm or less. The second left-right pitch Ph2 is preferably 1000 mm or less, more preferably 500 mm or less, and even more preferably 350 mm or less. The second left-right pitch Ph2 does not need to be the same value for all sheets, and may be different values ​​depending on design conditions (such as the dimensions of the intumescent fire-resistant sheet that constitutes the second sheets 52).

[0036] The distances Dv1, Dh1, Dv2, and Dh2 and the pitches Pv1, Ph1, Pv2, and Ph2 are set so that the countersunk head drill screws 53 and the pan head drill screws 56 are driven into the surface material 31 at different positions. In addition, they are set so that the number of attachment points using the pan head drill screws 56 is greater than the number of attachment points using the countersunk head drill screws 53.

[0037] 10, according to the shutter device 20, the head of the pan head drill screw 56 forms a convex portion that protrudes from the panel surfaces 211, 212 of each panel material 21. This reduces the contact area between the adjacent panel materials 21L and 21R when in the stored state, and forms a gap 60 shown by a dot in the figure. As a result, the adhesive force acting between the two contacting panel materials 21 in the stored state is reduced, allowing for a smooth transition from the stored state to the compartmented state.

[0038] (heat insulation test) The inventors set the above-mentioned distances Dv1, Dh1, Dv2, Dh2 and pitches Pv1, Ph1, Pv2, Ph2 based on the results of a heat insulation test conducted on the partition wall 30, with one of the right and left sides of the partition wall 30 shown in Fig. 3 set as the heated side and the other set as the unheated side. The inventors conducted a first heat insulation test and a second heat insulation test as the heat insulation test.

[0039] In the first heat insulation test and the second heat insulation test, SK Taica Sheet (registered trademark) manufactured by SK Kaken Co., Ltd. was used for the first sheet 51 and the second sheet 52. The thickness of the first sheet 51 was 3 mm, and the thickness of the second sheet 52 was 1.5 mm.

[0040] 11, the surface material 31 was made using 1.2 mm thick steel, and each panel material 21 had a width of 3,400 mm. A partition wall 30 with a height of 3,000 mm was made using one bottom panel material 21B, six middle panel materials 21M, and one top panel material 21T. Both ends of each panel material 21 were inserted into the guide rails 22 by about 8.5 mm.

[0041] Furthermore, in the first and second heat insulation tests, thermocouples were installed at various locations on the non-heated side to measure temperatures. Figure 11 shows the locations of the thermocouples when the right side of the partition wall 30 in Figure 3 is the heated side. Specifically, thermocouples were installed at the corners p10, p11, p12, and p13 of the partition wall 30 on the non-heated side, the center p14, the centers p15, p16, p17, and p18 of each side, the centers p20, p21, p22, and p23 between the corners p10, p11, p12, and p13 and the center p14, the portions p25, p26, and p27 corresponding to the joint portion 37 on the heated side, the upper ends p30 and p31 of the guide rail 22, the centers p32 and p33, and the lower ends p34 and p35.

[0042] As shown in Fig. 12(a), on the non-heated surface side, a measurement unit 70 was installed 150 mm away from the center p14 of the non-heated surface. As shown in Fig. 12(b), the measurement unit 70 includes a piece of wood 72 with a thermocouple 71, a disk thermocouple 74 with a blackbody copper plate 73, and a heat flux meter 75. The blackbody copper plate 73 and heat flux meter 75 were installed 15 mm away from the piece of wood 72 in the left-right direction. The heat flux meter 75 was also installed 15 mm below the blackbody copper plate 73.

[0043] In the first and second heat-shielding tests, the heating time for the heated surface was 120 minutes (= 90 minutes x 1.2 + 12 minutes). "90 minutes x 1.2" is the time applied mutatis mutandis to the flame-shielding test standard (heating for 1.2 times the specified time is required for more than 60 minutes). "+12 minutes" is the preheating time. Note that "flame-shielding performance" below refers to the ability of the partition wall to block flames, specifically, to prevent flames from reaching the unheated surface. "Heat-shielding performance" refers to the temperature of the unheated surface not exceeding 200°C, and "semi-heat-shielding performance" refers to the average temperature of the unheated surface not exceeding 380°C.

[0044] (First heat shield test) In the first heat insulation test, for the first sheet 51 of each panel material 21, the first vertical distance Dv1 on the heated surface side was 30 mm, and the first vertical distance Dv1 on the non-heated surface side was 70 mm. On both the heated surface side and the non-heated surface side, the first vertical pitch Pv1 was 200 mm. On both the heated surface side and the non-heated surface side, the first left-side horizontal distance Dh1 was 250 mm, the first left-side pitch Ph1 was 500 mm, and the first right-side horizontal distance Dh1 was 167 mm.

[0045] Furthermore, for the second sheet 52 of each panel material 21, the second vertical distance Dv2 on the heated surface side was 30 mm, and the second vertical distance Dv2 on the non-heated surface side was 70 mm. On both the heated surface side and the non-heated surface side, the second vertical pitch Pv2 was 200 mm. On both the heated surface side and the non-heated surface side, the second left-right distance Dh2 was 58.5 mm, the leftmost second left-right pitch Ph2 was 941.5 mm (= 1000 mm - 58.5 mm), and the remaining second left-right pitches Ph2 were 1000 mm.

[0046] As a result of the first heat insulation test described above, it was confirmed that the sheet had flame insulation performance for 90 minutes, heat insulation performance for 60 minutes, and semi-heat insulation performance for 90 minutes. However, it was confirmed that the first sheet 51 and the second sheet 52 had fallen off in a part of the non-heated surface.

[0047] (Second heat insulation test) In the second heat insulation test, the first sheets 51 were attached to each panel material 21 under the same conditions as in the first heat insulation test. Furthermore, the second left-right pitch Ph2 of the second sheets 52 of each panel material 21 was set to a different dimension value. Specifically, the leftmost second left-right pitch Ph2 was set to 274.5 mm (= 333 mm - 58.5 mm), and the remaining second left-right pitches Ph2 were set to 333 mm.

[0048] As a result of the second heat-shielding test described above, it was confirmed that the first sheet 51 and the second sheet 52 had flame-shielding performance for 90 minutes and heat-shielding performance for 90 minutes. It was also confirmed that the first sheet 51 and the second sheet 52 did not fall off on either the heated or non-heated side.

[0049] The operation and effects of this embodiment will be described. (1) The second sheet 52 is attached to the surface material 31 with the pan head drill screws 56, which reduces the contact area between adjacent panel materials 21 in the stored state. As a result, the adhesive force acting between the panel materials 21 is reduced, allowing for a smooth transition from the stored state to the compartmented state.

[0050] (2) The intumescent fire-resistant covering material 50 has a first sheet 51 and a second sheet 52. A first main surface sheet 51A of the first sheet 51 is provided so as to cover the main surface 31A of the surface material 31 and is attached to the surface material 31 with countersunk drill screws 53. The second sheet 52 is provided so as to cover the first main surface sheet 51A and is attached to the surface material 31 with pan head drill screws 56.

[0051] As a result, even if the intumescent fire-resistant covering material 50 has a laminated structure of the first main face sheet 51A and the second sheet 52, the first main face sheet 51A can be reliably attached to the facing material 31 while the attachment surface of the second sheet 52 can be flattened. As a result, the second sheet 52 can be attached in closer contact with the first main face sheet 51A. Furthermore, since the nominal diameter of the washer 54 is larger than the nominal diameter of the countersunk drill screw 53, the attachment surface of the second sheet 52 can be further flattened. Furthermore, since the attachment member is a pan head drill screw with a rounded head, the contact area of ​​adjacent panel materials 21 can be effectively reduced.

[0052] (3) The second sheet 52 is attached to the surface material 31 by pan drill screws 56 on both panel surfaces 211, 212 of each panel material 21. This allows the attachment members for the second sheet 52 to be standardized, thereby improving the workability of attaching the second sheet 52.

[0053] (4) The heads of the pan head drill screws 56 are covered and hidden by the fireproof patches 57. This prevents the pan head drill screws 56 from being exposed, improving the design of each panel material 21 and, ultimately, the design of the partition wall 30.

[0054] (5) The second lateral pitch Ph2 of the pan head drill screws 56 is 333 mm or less, which can prevent the first main face sheet 51A and the second sheet 52 from falling off in the event of a fire.

[0055] (6) The second vertical pitch Pv2 of the pan head drill screws 56 is 200 mm or less, which further reduces the likelihood of the first main face sheet 51A and the second sheet 52 falling off in the event of a fire.

[0056] (7) As a result of the above (5) and (6), the flame and heat blocking properties of the partition wall 30 can be further improved. (8) In the middle panel material 21M and the bottom panel material 21B, the second vertical distance Dv2 is set to 100 mm or less at the upper end. In addition, in the top panel material 21T, the second vertical distance Dv2 is set to 100 mm or less at the lower end. This further reduces the risk of the first main face sheet 51A and the second sheet 52 falling off in the event of a fire.

[0057] This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility. The panel material 21 does not need to have the non-combustible heat insulating material 55 filled inside the surface material 31.

[0058] The surface material 31 of the panel material 21 does not have to be hollow. That is, the surface material 31 may be formed, for example, from an iron plate of a predetermined thickness. Even in this configuration, the second sheet 52 can be attached to the surface material 31 with pan head drill screws 56 to obtain the same effect as in (1) above. Furthermore, by attaching the second sheet 52 to the surface material 31 with the second left-right pitch Ph2 being 333 mm or less and the second up-down pitch Pv2 being 200 mm or less, the flame-blocking and heat-blocking properties of the partition wall 30 can be improved.

[0059] In the above embodiment, the head of the pan drill screw 56 is covered and hidden by the non-combustible patch 57. However, this is not limiting, and the head of the pan drill screw 56 may be exposed. In the above embodiment, the second sheet 52 is attached to the surface material 31 with the pan head drill screws 56 on both the first panel surface 211 and the second panel surface 212. However, this is not limiting, and the second sheet 52 may be attached to the surface material 31 with the pan head drill screws 56 on one of the first panel surface 211 and the second panel surface 212, and the second sheet 52 may be attached to the surface material 31 with the countersunk drill screws 53 on the other. Even with this configuration, the contact area between adjacent panel materials 21 in the stored state can be reduced.

[0060] In the above embodiment, the first main face sheet 51A is attached to the surface material 31 with the countersunk head drill screws 53, and the second sheet 52 is attached to the surface material 31 with the pan head drill screws 56. However, the present invention is not limited to this, and the first main face sheet 51A may be attached to the surface material 31 with a heat-resistant adhesive, and the first main face sheet 51A and the second sheet 52 may be attached to the surface material 31 with the pan head drill screws 56.

[0061] The shutter device 20 may be directly exposed to the space without having a ceiling space 17. Even in this configuration, the function of forming a compartment is still satisfied. Furthermore, after a compartment is formed due to a fire, the entire shutter device 20 can be replaced.

[0062] The mounting member may be any member that can mount the intumescent fire-resistant covering material 50 to the surface material 31 and has a protruding portion that protrudes from the intumescent fire-resistant covering material 50. Therefore, the mounting member is not limited to the pan drill screw 56, and may be, for example, a screw with a hexagonal head or a screw with a truss head. [Explanation of symbols]

[0063] 11...floor, 12...ceiling, 13...wall, 15...space, 16...opening, 17...ceiling space, 18...compartment wall, 19...storage space, 20...shutter device, 21...panel material, 21B...bottom panel material, 21M...middle panel material, 21T...top panel material, 22...guide rail, 23...operation panel, 25...control panel, 26...opening / closing device, 27...fire detector, 30...compartment wall, 31...surface material, 32...upper mating convex portion, 33...upper mating concave portion, 34...lower mating Convex portion, 35...lower mating recess, 36, 37...joint portion, 38...upper sealing material, 39...lower sealing material, 40...setting block, 45...bottom base, 46...bottom seal, 50...foam fire-resistant coating material, 51...first sheet, 52...second sheet, 53...countersunk head drill screw, 55...non-combustible insulation material, 56...pan head drill screw, 57...non-combustible patch, 60...gap, 70...measuring part, 71...thermocouple, 72...piece of wood, 73...blackbody copper plate, 75...heat flux meter.

Claims

1. A vertically movable shutter device that forms a partition wall that divides a space inside a building into two spaces using a plurality of panel materials, The panel material has a metal surface material and an intumescent fire-resistant covering material attached to the surface material by an attachment member, covering the surface of the surface material, and foaming when heated in the event of a fire, The shutter device has a storage state in which the panel materials are stored in the storage space with the intumescent fire-resistant covering materials facing each other, The mounting member has a protruding portion that protrudes from the intumescent fire-resistant covering material. Shutter device.

2. the mounting member comprises a pan head drill screw; The intumescent fire-resistant covering material has a first sheet provided so as to cover a main surface of the surface material and a second sheet provided so as to cover the first sheet, The second sheet is attached to the facing by the pan head drill screws. The shutter device according to claim 1 .

3. The protruding portion of the mounting member is covered with a fire-resistant patch. The shutter device according to claim 1 .

4. The pitch of the mounting members in the left-right direction is 333 mm or less The shutter device according to claim 1 .

5. The pitch of the mounting members in the vertical direction is 200 mm or less The shutter device according to claim 1 .

6. A panel material used in a vertically movable shutter device that forms a partition wall that divides a space within a building into two spaces, Metallic surface material, and an intumescent fire-resistant covering material that is attached to the surface material by an attachment member, covers the surface of the surface material, and foams when heated in the event of a fire, The shutter device has a storage state in which the panel materials are stored in the storage space with the intumescent fire-resistant covering materials facing each other, The mounting member has a protruding portion that protrudes from the intumescent fire-resistant covering material. Panel material.

Images