Opening device
The opening device addresses the lack of fireproof performance in building openings by using a guide member to swallow the thermally expanded end bar, preventing deformation and maintaining a sealed state during fires.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- SANKYO TATEYAMA INC
- Filing Date
- 2022-12-28
- Publication Date
- 2026-07-07
AI Technical Summary
Existing building openings lack effective fireproof performance during fires, as conventional fire-resistant materials may deform or fail to prevent the spread of flames.
An opening device comprising a closing body with an end bar and a guide member, featuring a swallowing port sealed by a resin cover, where the end bar expands into the guide member during a fire, preventing deformation and maintaining a sealed state.
The device effectively prevents the formation of through-holes and maintains fireproof integrity by swallowing the thermally expanded end bar, ensuring the building opening remains sealed during a fire.
Smart Images
Figure 0007886265000001 
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Figure 0007886265000003
Abstract
Description
Technical Field
[0001] The present invention relates to an opening device capable of imparting 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 a building.
Summary of the Invention
Problems to be Solved by the Invention
[0003] In view of the above-described situation, an object of the present invention is to provide an opening device capable of imparting fireproof performance to an opening of a building.
Means for Solving the Problems
[0004] The opening device according to the invention described in claim 1 for achieving the above object includes a closing body and a guide member. The closing body has an end bar, and the guide member guides the longitudinal end of the end bar. A swallowing port is formed at the closing position of the closing body, and the swallowing port is closed with a resin cover. At the time of fire, the resin cover melts, and the longitudinal end of the thermally expanded end bar is swallowed into the guide member from the swallowing port. The longitudinal end face of the end bar at that time The swallowing port is closed with a resin cover. At the time of fire, the resin cover melts, and the longitudinal end of the thermally expanded end bar is swallowed into the guide member from the swallowing port, which is characterized in that.
Effects of the Invention
[0005] The opening device according to the invention described in claim 1 includes a closing body and a guide member. The closing body has an end bar, and the guide member guides the longitudinal end of the end bar. A swallowing port is formed at the closing position of the closing body, and the swallowing port is closed with a resin cover. At the time of fire, the resin cover melts, and the longitudinal end of the thermally expanded end bar is swallowed into the guide member from the swallowing port. The longitudinal end face of the end bar at that time By this, at the time of fire, the end bar is prevented from being deformed to form a through hole, and fireproof performance can be imparted to the opening of the building.
Brief Description of the Drawings
[0006] [Figure 1] This is a longitudinal cross-sectional view showing one embodiment of the opening device of the present invention. [Figure 2] This is a cross-sectional view of the opening device. [Figure 3] This is a front view of the opening device as seen from the interior side. [Figure 4] This is a cross-sectional view showing a magnified view of the area around the guide member of the opening device. [Figure 5] This is a perspective view showing the assembly procedure for the guide components. [Figure 6] This is a perspective view showing how the width of the slits in the reinforcing member is adjusted and fixed in place. [Figure 7] This is a perspective view showing the lower end of the guide member, where (a) is the state before the outdoor guide part is attached, (b) is the normal state with the end bar in the closed position, and (c) is the state in which the end bar expands due to heat during a fire and the longitudinal end of the end bar is swallowed by the guide member through the intake opening. [Figure 8] 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. [Figure 9] This is a cross-sectional view of the area around a guide member, showing another embodiment of the opening device of the present invention. [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 4 show one embodiment of the opening device 11 of the present invention. As shown in Figures 1 and 2, this opening device 11 is shown as being installed in an opening 9 facing the outside of a wooden house. A window sash (vertical sliding window) 10 is installed on the exterior side of the opening 9, and this opening device 11 is installed on the interior side of the window sash 10. The window sash 10 does not have fire-resistant properties, and by installing this opening device 11 on the interior side of the window sash 10, fire-resistant properties are provided to the opening 9.
[0008] As shown in Figures 1 and 2, the opening device 11 includes a roll screen 13 attached to the upper inner circumferential surface 12a of the opening 9, and guide members 2, 2 attached to the left and right inner circumferential surfaces 12b, 12b of the opening 9. As shown in Figure 1, the roller screen 13 includes a winding shaft 14 and a box 15 for housing the winding shaft 14. A non-combustible sheet (closure body) 1 is wound around the winding shaft 14. When the winding shaft 14 rotates clockwise in Figure 1, the non-combustible sheet 1 is unwound from the winding shaft 14, and when it rotates counterclockwise, the non-combustible sheet 1 is wound onto the winding shaft 14. The non-combustible sheet 1 can be made of, for example, a cloth made of glass fibers coated with resin. As shown in Figures 2 and 4, metal eyelets 16 are provided at vertical intervals on the left and right side edges 1a of the non-combustible sheet 1 to prevent it from coming loose. In addition, an end bar 3 is attached to the lower edge of the non-combustible sheet 1, as shown in Figure 1.
[0009] Box 15 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 17. Inside box 15, steel reinforcing members 18a and 18b are provided to surround the winding shaft 14. Side plates 19 are attached to both the left and right sides of box 15 (see Figure 3). As shown in Figure 1, the box 15 has hook-shaped locking parts 20a and 20b formed on the upper surface at two locations, one on the outdoor side and one on the indoor side, facing outwards. These locking parts 20a and 20b are attached from the indoor side to the locking parts 22a and 22b of the mounting material 21 attached to the upper inner circumferential surface 12a of the opening 9, and the box 15 is fixed from the indoor side with screws 23. The mounting member 21 is a long member formed from an extruded aluminum alloy profile, and is fixed to the building structure by screws 24 from below, abutting against the upper inner circumferential surface 12a of the opening 9. The mounting member 21 has two shallow grooves formed along its longitudinal direction, one on the outdoor side and one on the indoor side of its upper surface, and heat-expanded foaming material 25 is provided in each of these grooves.
[0010] As shown in Figure 4, the guide member 2 is formed from an extruded aluminum alloy profile having a hollow section 6, and has a guide member body 26 and inner and outer guide sections 27a and 27b provided on the inner circumference of the guide member body 26. The inner and outer guide sections 27a and 27b have a recessed wall 28 facing the longitudinal end face of the end bar 3 and a facing wall 29 facing the exterior and interior sides of the longitudinal end of the end bar 3, respectively, and these recessed walls 28 and facing walls 29 guide the longitudinal end of the end bar 3. A slit 30 is formed between the recessed walls 28, 28 of the inner and outer guide sections 27a and 27b, and the non-combustible sheet 1 passes through the slit 30. The width of the slit 30 is slightly wider than the thickness of the non-combustible sheet 1 and is sized so that the eyelets 16 do not come out. The edges of the recessed walls 28, 28 are chamfered in an arc shape. Of the inner and outer guide sections 27a and 27b, the outer guide section 27a is formed separately from the guide member body 26 and has an integral mounting piece 31 on the outer side of the visible wall 29. The mounting piece 31 abuts against the inner circumferential surface of the guide member body 26 and is fixed from the inner side with a screw 32, making it detachable. The inner guide section 27b is formed integrally with the guide member body 26. Therefore, by removing the outer guide section 27a, the side edge 1a of the non-combustible sheet 1 can be easily inserted into and removed from the guide member 2. The guide member body 26 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 33 is provided in each of these grooves.
[0011] As shown in Figure 4, a steel reinforcing member 7 is provided within the hollow portion 6 of the guide member 2, along the longitudinal direction of the guide member 2 and extending over its entire length. The reinforcing member 7 is composed of two members: an outdoor-side member 7a and an indoor-side member 7b. The outdoor side member 7a is formed in a roughly U-shaped cross-section in plan view by the inner circumferential side wall 34, the outdoor side wall 35, and the outer circumferential side wall 36. The indoor side member 7b is formed in a roughly U-shaped cross-section by the inner circumferential side wall 37, the indoor side wall 38, the outer circumferential side wall 39, and the outdoor side wall 40. The outdoor member 7a and the indoor member 7b are assembled such that the outer periphery wall 36 of the outdoor member 7a overlaps the inner periphery side wall 39 of the indoor member 7b, and the outer periphery walls 36 and 39 of both members 7a and 7b are screwed to the building structure together with the outer periphery wall 42 of the guide member body 26 using screws 41 from the inner periphery side. Multiple screws 41 are provided at predetermined intervals (for example, 200 mm) in the longitudinal direction of the guide member 2. The inner periphery wall 34 of the outdoor member 7a is provided with a notch 43 for the heads of the screws 41 to pass through (see Figure 5).
[0012] As shown in Figure 4, the reinforcing member 7 has a slit 8 formed in the inner circumferential side wall 34 of the outdoor member 7a and the inner circumferential side wall 37 of the indoor member 7b through which the non-combustible sheet 1 passes. The positions of the outdoor member 7a and the indoor member 7b are adjusted in the indoor-outdoor direction so that the width A of the slit 8 is a predetermined dimension, and then they are fixed with the aforementioned screws 41. The predetermined dimension of the width A of the slit 8 is such that the non-combustible sheet 1 can be moved up and down smoothly, and the eyelets 16 that prevent it from coming out are not. Specifically, the width A of the slit 8 is set to approximately 1.4 mm, which is about 1 mm larger than the thickness of the non-combustible sheet 1, given that the thickness of the non-combustible sheet 1 is 0.4 mm. The thickness of the eyelets 16 is approximately 3.2 mm. To allow the positions of the outdoor member 7a and the indoor member 7b to be adjusted in the indoor-outdoor direction, insertion holes 44 for the screws 41 are formed in the outer circumferential side walls 36 and 39, which are larger than the diameter of the screws 41. Furthermore, the outdoor member 7a and the indoor member 7b are positioned in the height direction by passing a screw 47, which is inserted through the outdoor wall 46 of the guide member body 26, through the hole 45, which is formed at one location on the upper part of the outdoor wall 35, 40.
[0013] As shown in Figures 1, 5, and 7, the guide member 2 has a notch at the lower end of the leading wall 28 of the inner and outer guide portions 7a and 7b, forming a fitting opening 4 for the longitudinal end of the end bar 3. The reinforcing member 7 also has a similar fitting opening 4. As shown in Fig. 7(a), the intake port 4 of the guide member 2 is closed by attaching a resin cover 5. When the end bar 3 is lowered to the closed position (see Fig. 1) where it abuts against the inner peripheral surface 12c below the opening 9, as shown in Fig. 7(b), the cover 5 faces the longitudinal end surface of the end bar 3. Also, a steel lower end cap 48 is attached to the lower end of the guide member 2, and the lower end cap 48 closes the small end of the lower end of the guide member 2. As shown in Fig. 5(c), the resin cover 5 is formed in a U-shape in plan view. Its outer peripheral side wall 49 is overlapped with the outer periphery of the rising piece 50 formed on the steel lower end cap 48, and a screw 51 inserted from the outer periphery into the outer peripheral side wall 42 of the guide member body 26 is screwed into the female screw hole 52 formed in the rising piece 50, thereby fixing the cover 5 and the lower end cap 48 to the lower end of the guide member 2.
[0014] Next, the procedure for installing the guide member 2 will be described. First, as shown in Fig. 5(a), the outdoor side member 7a and the indoor side member 7b of the reinforcing member 7 are combined so that their outer peripheral side walls 36, 39 overlap each other. Then, as shown in Fig. 5(b), the combined reinforcing member 7 is inserted into the hollow portion 6 of the guide member body 26 from the small end. Next, as shown in Fig. 5(c), the cover 5 and the lower end cap 48 are attached to the lower end of the guide member body 26 with screws 51. Thereafter, the guide member 2 is applied to the inner peripheral surface 12b of the opening 9, and as shown in FIG. 6, the positions of the outdoor side member 7a and the indoor side member 7b of the reinforcing member 7 in the indoor-outdoor direction are adjusted so that the width A of the slit 8 between the inner peripheral side wall 34 of the outdoor side member 7a and the inner peripheral side wall 37 of the indoor side member 7b becomes a predetermined dimension. FIG. 6(a) shows the case where the width A of the slit 8 is smaller than the predetermined dimension. In this case, the outdoor side member 7a is moved to the outdoor side to widen the width A of the slit 8. FIG. 6(c) shows the case where the width A of the slit 8 is larger than the predetermined dimension. In this case, the outdoor side member 7a is moved to the indoor side to narrow the width A of the slit 8. The movement of the outdoor side member 7a can be performed by touching the inner peripheral side wall 34 with a finger or inserting a tool into the slit 8. Then, when the width A of the slit 8 is adjusted to the predetermined dimension, as shown in FIG. 6(b), the reinforcing member 7 and the guide member main body 26 are fixed with screws 41 from the inner peripheral side. Thereafter, as shown in FIG. 5(c), the outdoor guide portion 27a is attached to the guide member main body 26 with screws 32 from the inner peripheral side.
[0015] As shown in FIG. 3, the end bar 3 has a closing holding fitting 53 for holding the end bar 3 in the closed position on the indoor side finding surface at the intermediate portion in the longitudinal direction. The end bar 3 is formed of an extruded aluminum alloy material. On the lower surface of the end bar 3, as shown in FIG. 1, a tight material 54 that abuts against the inner peripheral surface 12c below the opening 9 is provided along the longitudinal direction.
[0016] The opening device 11 is configured as described above. As shown in FIG. 1, by lowering the end bar 3 to the closed position, the opening 9 can be blocked with the non-combustible sheet 1 to block the flame, so that the opening 9 can be given fire prevention performance. As shown in Figure 4, the opening device 11 has a steel reinforcing member 7 provided within the hollow portion 6 of the left and right guide members 2. The reinforcing member 7 is composed of an outdoor member 7a and an indoor member 7b with a roughly U-shaped cross-section. A slit 8 through which the non-combustible sheet 1 passes is formed in the inner peripheral side wall 34 of the outdoor member 7a and the inner peripheral side wall 37 of the indoor member 7b. The width A of the slit 8 is set to prevent the eyelets 16 attached to the side edge 1a of the non-combustible sheet 2 from coming out. Therefore, even if the non-combustible sheet 1 bends to the outdoor or indoor side due to wind pressure during a fire, as shown in Figure 8, the eyelets 16 catch on the slit 8 of the reinforcing member 7, holding the side edge 1a of the non-combustible sheet 1 from coming out of the guide member 2, thus maintaining fire protection performance. Even if the aluminum guide parts 27a and 27b of the guide member 2 melt during a fire, the opening device 11 can prevent the non-combustible sheet 1 from coming out through the slits 8 of the steel reinforcing material 7.
[0017] Furthermore, as shown in Figures 7(a) and (b), the opening device 11 has a swallowing opening 4 for the end bar 3 on the inner circumferential side surface of the lower end of the guide member 2, and the swallowing opening 4 is covered with a resin cover 5. In the event of a fire, as shown in Figure 7(c), the resin cover 5 melts (burns away) and disappears, the end bar 3 expands longitudinally due to the heat of the fire, and the longitudinal end of the end bar 3 is swallowed into the guide member 2 through the swallowing opening 4. The longitudinal end of the end bar 3 that has been swallowed into the guide member 2 through the swallowing opening 4 is held by the edge 55 of the swallowing opening 4. If the guide member 2 did not have a swallowing opening 4, in the event of a fire, the end bar 3 would be constrained at both ends by the left and right guide members 2, 2 and would expand due to heat, causing it to bend and deform. This could cause the end bar 3 to separate from the inner circumferential surface 12c of the opening 9, potentially creating a through-hole. However, as described above, the opening device 11 prevents deformation of the end bar 3 and the formation of a through-hole by allowing the longitudinal end of the end bar 3, which expands due to heat during a fire, to be swallowed by the guide member 2 through the swallowing opening 4.
[0018] Figure 9 shows another embodiment of the opening device 11 of the present invention. In this embodiment, metal alligator clips 56 are attached to the side edge 1a of the non-combustible sheet 1 instead of eyelets 16 to prevent them from coming off. In this embodiment, when the non-combustible sheet 1 attempts to bend outwards or inwards due to wind pressure during a fire, the alligator clips 56 catch on the slits 8 of the reinforcing member 7 provided within the hollow portion 6 of the guide member 2, preventing them from coming loose. This holds the side edge 1a of the non-combustible sheet 1 in place by the guide member 2, thus enabling it to exhibit fire-resistant performance.
[0019] As described above, the opening device 11 comprises a closing body (non-combustible sheet) 1 and a guide member 2. The closing body 1 has an end bar 3, and the guide member 2 guides the longitudinal end of the end bar 3. A swallowing opening 4 is formed at the closing position of the closing body 1, and the swallowing opening 4 is sealed with a resin cover 5. In the event of a fire, the resin cover 5 melts, and the longitudinal end of the thermally expanded end bar 3 is swallowed by the guide member 2 through the swallowing opening 4 (see Figure 7). This prevents the end bar 3 from deforming and forming a penetration opening in the event of a fire, thereby providing fire protection to the opening 9 of the building. The opening device 11 prevents the end bar 3 from moving in a closed position during a fire by holding the longitudinal end of the end bar 3 at the edge 55 of the swallowing opening 4 when the longitudinal end of the end bar 3 is swallowed into the swallowing opening 4, thereby preventing the formation of a through-hole.
[0020] This opening device 11 comprises a closing body (non-combustible sheet) 1 and a guide member 2. The guide member 2 has a hollow section 6, and a reinforcing member 7 is provided longitudinally within the hollow section 6. The reinforcing member 7 has two members, an outdoor-side member 7a and an indoor-side member 7b, which form a slit 8 through which the closing body 1 passes. By adjusting and fixing the width A of the slit 8 to a predetermined dimension (see Figure 4), the closing body 1 is prevented from coming out of the guide member 2 in the event of a fire, thereby providing fire protection to the opening 9 of the building. Moreover, since the width A of the slit 8 can be adjusted to match the thickness of the closing body 1, the closing body 1 can be slid smoothly, and at the same time, the flapping of the closing body 1 can be prevented. The guide member 2 has inner and outer guide portions 27a and 27b that guide the longitudinal end of the end bar 3, and at least one of the guide portions 27a is detachable, so the width A of the slit 8 can be easily adjusted by removing the guide portion 27a.
[0021] The present invention is not limited to the embodiments described above. The shape and material of the guide members and end bars can be changed as appropriate. The shape of the guide member's opening, the shape of the cover, and the method of attachment can be changed as appropriate. The occluding body only needs to be made of a material that does not burn through for a certain period of time in the event of a fire, and is not limited to a roll screen made of a non-combustible sheet, but may also be a shutter or a blind. Furthermore, the occluding body is not limited to one that opens and closes in the vertical direction, but may also open and close in the horizontal direction. The opening device of the present invention may be installed on the exterior side of a sash, or it may be used to partition rooms, partition corridors and rooms, or close closets, etc. [Explanation of symbols]
[0022] 1. Non-combustible sheet (obstruction body) 2 Guide members 3 End Bars 4. Swallowing opening 5 Cover 6 Hollow part 7 Reinforcement members 7a Outdoor side member 7b Interior component 8 slits 9 Opening 11 Opening device
Claims
[Claim 1] An opening device comprising a closing body and a guide member, wherein the closing body has an end bar, and the guide member guides the longitudinal end of the end bar, and a swallowing opening is formed at a position opposite to the longitudinal end face of the end bar when the closing body is closed, the swallowing opening is sealed with a resin cover, and in the event of a fire the resin cover melts and the thermally expanded longitudinal end of the end bar is swallowed by the guide member through the swallowing opening.