Fireproof roller screen device

Abstract

To provide a fire-resistant roll screen device that can provide fire protection to openings in buildings. [Solution] The system includes a roll screen 1 for opening and closing the opening 6, a bottom bar 2 provided at the lower end of the roll screen 1, a frame 3b provided on the lower side of the opening 6, a lock receiver 4 attached to the frame 3b, and a lock 5 provided on the bottom bar 2. The bottom bar 2 is fixed to the frame 3b by engaging the lock 5 with the lock receiver 4.

Description

Technical Field

[0006] , ,

[0001] The present invention relates to a fireproof roll screen device that can impart fireproof performance to an opening of a building.

Background Art

[0002] In order to prevent the spread of fire during a fire, it is required to impart fireproof performance to the openings of buildings.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In view of the above circumstances, an object of the present invention is to provide a fireproof roll screen device that can impart fireproof performance to an opening of a building.

Means for Solving the Problems

[0004] The fireproof roll screen device according to the invention described in claim 1 for achieving the above object comprises a roll screen for opening and closing an opening, a bottom bar provided at the lower end of the roll screen, a frame provided below the opening, a lock receiver attached to the frame, and a lock provided on the bottom bar, and is characterized in that the bottom bar is fixed to the frame by engaging the lock with the lock receiver.

Effects of the Invention

[0005] The fireproof roll screen device according to the invention described in claim 1 comprises a roll screen for opening and closing an opening, a bottom bar provided at the lower end of the roll screen, a frame provided below the opening, a lock receiver attached to the frame, and a lock provided on the bottom bar, and by fixing the bottom bar to the frame by engaging the lock with the lock receiver, fireproof performance can be imparted to the opening of the building. By engaging the lock with the lock receiver attached to the frame, the lower storage can be made flat, which is convenient to use.

Brief Description of the Drawings

[0006] [Figure 1] This is a longitudinal cross-sectional view showing one embodiment of the fire-resistant roll screen device of the present invention. [Figure 2] This is a cross-sectional view of the fire-resistant roller screen device. [Figure 3] This is a front view of the fire-resistant roller screen device, seen from the inside. [Figure 4] (a) is an enlarged view of the interior side of the lock, and (b) is a cross-sectional view of AA. [Figure 5] This is a cross-sectional view showing a magnified view of the area around the guide member of the fire-resistant roll screen device. [Figure 6] Figure 3 is a cross-sectional view of BB. [Figure 7] This is from the perspective of rock music and how rock music is received. [Figure 8] This is an interior front view showing the sequence of locking movements when closing a roller screen. [Figure 9] This is an interior front view showing the state when the lock is released. [Figure 10] (a) is a cross-sectional view showing the state of the bottom bar when a fire occurs on the outdoor side, and (b) is a comparative example, a cross-sectional view showing the state of the bottom bar when a fire occurs on the outdoor side in a case where no reinforcing material is provided to the bottom bar. [Figure 11] This perspective view shows how grommets attached to a fire-resistant sheet are secured in slits in reinforcing members to prevent them from coming loose during a fire. [Modes for carrying out the invention]

[0007] The embodiments of the present invention will be described below with reference to the drawings. Figures 1 to 6 show one embodiment of the fire-resistant roller screen device 8 of the present invention. As shown in Figures 1 to 3, this fire-resistant roller screen device 8 is shown as being installed in an opening 6 facing the outside of a wooden house. As shown in Figures 1 and 2, a window sash (vertical sliding window) 7 is installed on the exterior side of the opening 6, and the fire-resistant roller screen device 8 is installed on the inner surfaces of the four frames 3a, 3b, 3c, 3c provided on the interior side of the window sash 7. The window sash 7 does not have fire-resistant properties, but by closing the fire-resistant roller screen device 8 and sealing the opening 6, fire-resistant properties can be provided to the opening 6.

[0008] As shown in Figures 1 to 3, this fire-resistant roll screen device 8 includes a roll screen 1 attached to the lower surface of the upper frame 3a, a bottom bar 2 provided at the lower end of the roll screen 1, and guide members 9, 9 attached to the inner circumferential surfaces of the left and right frames 3c, 3c. As shown in Figure 1, the roller screen 1 comprises a winding shaft 10 and a box 11 for housing the winding shaft 10. A closure body 12 made of a non-combustible sheet is wound around the winding shaft 10. When the winding shaft 10 rotates clockwise in Figure 1, the closure body 12 is unwound from the winding shaft 10, and when it rotates counterclockwise, the closure body 12 is wound onto the winding shaft 10. The closure body 12 can be made of, for example, a cloth made of glass fiber coated with resin. As shown in Figures 2 and 5, metal eyelets 13 are provided at vertical intervals on the left and right side edges of the closure body 12 to prevent it from coming loose. The lower edge of the closure body 12 is fixed to the top of the bottom bar 2 via a fastener 14, as shown in Figure 1.

[0009] Box 11 is formed from an extruded aluminum alloy profile and, as shown in Figure 1, has a roughly C-shaped cross-section with an open bottom surface on the interior side and an open interior side, which is covered by a removable cover 15. Inside box 11, steel reinforcing members 16a and 16b are provided to surround the winding shaft 10. Side plates 17 are attached to both the left and right sides of box 11 (see Figure 3). As shown in Figure 1, the box 11 has hook-shaped locking parts 18a and 18b formed on the upper surface at two locations, one on the outdoor side and one on the indoor side, facing outwards. These locking parts 18a and 18b are attached from the indoor side to the locking parts 20a and 20b of the mounting material 19 attached to the lower surface of the upper frame 3a, and the box 11 is secured from the indoor side with screws 21. The mounting member 19 is a long material formed from an extruded aluminum alloy profile, and is fixed to the frame 3a by screws 22 from below, abutting against the lower surface of the upper frame 3a. The mounting member 19 has two shallow grooves formed along its longitudinal direction, one on the outdoor side and one on the indoor side of the upper surface, and heat-expanded foam material 23 is provided in each of these grooves.

[0010] As shown in Figure 5, the guide member 9 is formed from an extruded aluminum alloy profile having a hollow section 24, and has a guide member body 25 and inner and outer guide sections 26a and 26b provided on the inner circumference of the guide member body 25. The inner and outer guide sections 26a and 26b have a guide groove 27 that guides the longitudinal end of the bottom bar 2 and a slit 28 through which the closure body 12 is inserted. The slit 28 is slightly wider than the thickness of the closure body 12 and is sized so that the eyelet 13 does not come out. The outer guide section 26a is formed separately from the guide member body 25 and is detachably attached, and by removing the outer guide section 26a, the side edge of the closure body 12 can be easily inserted into and removed from the guide member 9. The guide member body 25 has shallow grooves formed along its longitudinal direction at two locations on its outer circumference, one on the outdoor side and one on the indoor side, and heat-expanded foaming material 29 is provided in each of these grooves.

[0011] As shown in Figure 5, a steel reinforcing member 30 is provided within the hollow portion 24 of the guide member 9, along the longitudinal direction of the guide member 9 and extending over its entire length. The reinforcing member 30 consists of two members, an outdoor side member 30a and an indoor side member 30b, and has a slit 31 formed on its inner circumference through which the closing body 12 is inserted. The reinforcing member 30 is fixed to the frame 3c together with the guide member body 25 by screws 32 from the inner circumference, after the width S of the slit 31 has been adjusted to a size that allows the closing body 12 to move up and down smoothly and prevents the eyelet 13 from coming out.

[0012] As shown in Figures 1, 4, and 6, the bottom bar 2 is formed from an extruded aluminum alloy profile having a hollow section 32. On the indoor side of the lower surface of the bottom bar 2, a gap-filling material 33 having soft fins is provided along the longitudinal direction, and the gap-filling material 33 fills the gap between it and the lower frame 3b. In addition, a groove 34 is formed along the longitudinal direction on the outdoor side of the gap-filling material 33 on the lower surface of the bottom bar 2, and a heat-expandable material 35 is provided along the entire length of the groove 34, held within the groove 34.

[0013] As shown in Figure 3, a lock 5 is provided at the center of the longitudinal direction of the bottom bar 2 for fixing the bottom bar 2 to the lower frame 3b. As shown in Figures 4 and 7, the lock 5 consists of an outer part 36 that is attached in contact with the outdoor side surface of the bottom bar 2, and an inner part 37 that is attached in contact with the indoor side surface of the bottom bar 2. The outer part 36 is rotatably mounted on a hook 38 pivotally supported on an axis 39 in the indoor-outdoor direction. The inner part 37 is rotatably mounted on an operating part 40 pivotally on an axis 41 in the indoor-outdoor direction. The hook 38 and the operating part 40 are linked when an arm 42 protruding from the hook 38 toward the indoor side engages with a projection 43 provided on the operating part 40 (see Figure 4(a)). Furthermore, the hook 38 and the operating part 40 are biased by a spring 44 so that the hook 38 is in a position where it protrudes directly downwards (see Figure 7(a)).

[0014] As shown in Fig. 4, the lower frame 3b has a flat upper surface with a hole 45 dug in it for the sickle 38 of the lock 5 to enter. A lock receiver 4 is attached to the upper surface of the frame 3b with a screw 46 from above the hole 45. The lock receiver 46 is a plate-like member formed of a thin metal plate with a thickness of 1.2 mm. As shown in Figs. 7(a) and 8, it has a square hole 47 for the sickle 38 to engage with and a hole cover 48 that covers the hole 45 of the frame 3b from the inside.

[0015] Fig. 8 shows the movement of the lock 5 when closing the roll screen 1. When the bottom bar 2 is lowered, as shown in Fig. 8(a), the inclined portion 49 formed on the lower side of the sickle 38 abuts against the edge 47a of the square hole 47 of the lock receiver 4. Then, as shown in Fig. 8(b), as the bottom bar 2 is lowered, the sickle 38 rotates counterclockwise and enters the hole 45 of the frame 3b through the square hole 47 of the lock receiver 4. When the bottom bar 2 is lowered all the way down, as shown in Fig. 8(c), the sickle 38 returns to its original position by the force of the spring 44, and the sickle 38 is locked to the back side of the lock receiver 4, locking the bottom bar 2 so that it does not separate from the frame 3b. Thus, this fireproof roll screen device 8 is automatically locked when the roll screen 1 is closed. When opening the roll screen 1, as shown in Fig. 9, operate the operation part 40 provided on the indoor side with a finger to rotate the sickle 38 to a position where it can be removed from the square hole 47 of the lock receiver 4 to release the lock.

[0016] Thus, this fireproof roll screen device 8 has the function of locking the bottom bar 2 in the closed position, but there is no lower frame for receiving the bottom bar 2 on the upper surface of the lower frame 3b. Only a very thin lock receiver 4 is attached, and the lower part is flat, so it is easy to clean and has good usability.

[0017] As shown in Figure 6, a steel reinforcing member 50 is provided in the longitudinal direction within the hollow section 32 of the bottom bar 2. The reinforcing member 50 is formed in a U-shaped cross section with an open top, and opposing vertical walls 51, 51 are positioned close to the exterior and interior walls of the hollow section 32, while the horizontal wall 52 abuts against the lower wall of the hollow section 32 and is attached by screwing it in place with screws 53 from below. The reinforcing member 50 is divided into left and right sections at the position of the lock 5.

[0018] Figure 10(a) shows the state of the bottom bar 2 when a fire occurs on the outdoor side, and Figure 10(b) shows a comparative example in which the bottom bar 2 is not provided with a reinforcing material 50, and shows the state of the same bottom bar 2 when a fire occurs on the outdoor side. Since the bottom bar 2 is restrained at both left and right ends by guide members 9,9 and at the center by lock 5, in the comparative example where the reinforcing member 50 is not provided, as the bottom bar 2 is heated by the heat of the fire and expands due to the heat, as shown in Figure 10(b), the unrestrained portion of the bottom bar 2 (the portion between lock 5 and guide members 9,9) will warp and bulge toward the heated surface (outside the room), and there is a risk that the bottom bar 2 will separate from the upper surface of the frame 3b and a through hole will be created. In contrast, in this embodiment, a reinforcing member 50 is provided within the hollow portion 32 of the bottom bar 2, which suppresses the warping of the bottom bar 2, as shown in Figure 10(a). This prevents the formation of a through-hole between the bottom bar 2 and the picture frame 3b. Furthermore, since a heat-expandable material 35 is provided on the underside of the bottom bar 2 (see Figures 4 and 6), in the event of a fire, the heat-expandable material 35 will foam and expand, sealing the gap between the bottom bar 2 and the frame 3b, and preventing flames from entering through the gap between the bottom bar 2 and the frame 3b.

[0019] Furthermore, as shown in Figures 1 and 2, the fire-resistant screen device 8 also has heat-expanding materials 23 and 29 provided between the upper frame 3a and the mounting material 19 of the box 11, and between the left and right frame 3c, 3c and the guide members 9, 9. In the event of a fire, these heat-expanding materials 23 and 29 foam and expand, sealing the gaps between the upper frame 3a and the mounting material 19 of the box 11, and between the left and right frame 3c, 3c and the guide members 9, 9. This prevents flames from entering through the gaps between the upper frame 3a and the mounting material 19 of the box 11, and between the left and right frame 3c, 3c and the guide members 9, 9. Furthermore, as shown in Figure 5, the fire-resistant screen device 8 has a steel reinforcing member 30 provided within the hollow portion 24 of the left and right guide members 9, 9. The reinforcing member 30 has a slit 31 formed in it that is sized so that the eyelets 13 provided on the side edge of the closure body 12 do not come out. Therefore, even if the closure body 12 bends outward or inward due to wind pressure during a fire, as shown in Figure 11, the eyelets 13 catch on the slit 31 of the reinforcing member 30, holding the side edge of the closure body 12 in place so that it does not come out of the guide member 9. This prevents flames from passing through the gap between the closure body 12 and the guide member 9.

[0020] As described above, this fire-resistant screen device 8 comprises a roll screen 1 for opening and closing the opening 6, a bottom bar 2 provided at the lower end of the roll screen 1, a frame 3b provided on the lower side of the opening 6, a lock receiver 4 attached to the frame 3b, and a lock 5 provided on the bottom bar 2. By engaging the lock 5 with the lock receiver 4, the bottom bar 2 is fixed to the frame 3b (see Figures 1 and 4), thereby providing fire-resistant performance to the opening 6 of the building. Engaging the lock 5 with the lock receiver 4 attached to the frame 3b allows for a flat finish at the bottom, making it easy to use. The frame 3b has a flat top surface that is recessed to form a hole 45 into which the lock 5 enters, and the lock receiver 4 is attached from above the hole 45 (see Figure 4). This makes it easy to process the frame 3b and attach the lock receiver 4, resulting in good workability. The lock receiver 4 has a hole cover 48 that covers the hole in the frame 3b from the inside (see Figure 4), so it can prevent dirt and water from accumulating in the hole 45 of the frame 3b. The bottom bar 2 has reinforcing material 50 provided within the hollow section 32 (see Figure 6), which helps to suppress the bending of the bottom bar 2 during a fire (see Figure 10). The reinforcing member 50 is divided into left and right sections at the position of the lock 5, so that the reinforcing member 50 does not interfere with the installation of the lock 5. Since the reinforcing material 50 has a U-shaped cross-section that follows the exterior, interior, and lower walls of the hollow section 32 (see Figure 6), it is highly effective in suppressing the warping of the bottom bar 2. Because the heat-expanding material 35 is provided along the longitudinal direction on the underside of the bottom bar 2 (see Figures 4 and 6), the heat-expanding material 35 that expands and foams during a fire seals the gap between the bottom bar 2 and the frame 3b, thereby preventing flames from entering through the gap between the bottom bar 2 and the frame 3b. Since the bottom bar 2 has a gap-concealing member 33 that hides the gap with the frame 3b (see Figures 4 and 6), it is possible to prevent cold air and other elements from entering the room through the gap between the bottom bar 2 and the frame 3b.

[0021] The present invention is not limited to the embodiments described above. The material and cross-sectional shape of the bottom bar, and the material and shape of the frame can be changed as appropriate. The frame can be one that is originally installed in the opening. The form of the lock and lock receiver can be changed as appropriate. The fire-resistant roll screen device of the present invention may be installed on the exterior side of the sash, or it may be used to partition rooms, partition corridors and rooms, or to close closets, etc. [Explanation of Symbols]

[0022] 1 Roller blind 2 Bottom bar 3a,3b,3c Picture frame 4 Lock receiver 5 Rock 6 openings 7 Window sashes 8. Fireproof Roll Screen Device

Claims

[Claim 1] A fire-resistant roll screen device comprising a roll screen for opening and closing an opening, a bottom bar provided at the lower end of the roll screen, a frame provided on the lower side of the opening, a lock receiver attached to the frame, and a lock provided on the bottom bar, wherein the bottom bar is fixed to the frame by engaging the lock with the lock receiver.

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