Double sheet sheet for sheet shutters, and sheet shutters

Abstract

To provide a double-layer sheet shutter with a simple structure that improves thermal insulation performance. [Solution] The invention is characterized by having a first sheet 11, a second sheet 12 spaced apart from and facing the first sheet 11, a rectangular prism-shaped tube section 14 extending in the width direction of the first sheet 11 and the second sheet 12 and fixed in parallel in the vertical direction between the inner surface 11a of the first sheet 11 and the inner surface 12a of the second sheet 12, a rigid rod body 15 enclosed within the tube section 14, and a hollow section 17 formed by the first sheet 11, the second sheet 12, and the adjacent tube section 14.

Description

[Technical Field]

[0001] The present invention relates to a double sheet used for sheet shutters and a sheet shutter. [Background Art]

[0002] Sheet shutters that block the internal space from the external space are used at entrances and exits of factories and buildings. When people or vehicles pass through the entrance / exit, the sheet of the sheet shutter provided at the upper part of the entrance / exit is rapidly wound up, allowing smooth passage. Since the sheet of a sheet shutter is thin, sheet shutters with high heat insulation performance have been demanded particularly in cold regions.

[0003] The sheet shutter of Patent Document 1 describes a sheet shutter comprising: a plurality of sheets that are independently raised and lowered on the front side and the back side in an opening, respectively; means for winding up and winding down each sheet; a sheet folded back in a loop shape at the lower end so as to form a double layer between the front side and the back side in the opening; and means for winding up and winding down the end on the front side or the back side of the sheet. [Prior Art Literature] [Patent Literature]

[0004] [Patent Document 1] Japanese Patent Laid-Open No. 2004-100241 [Summary of the Invention] [Problem to be Solved by the Invention]

[0005] However, the sheet shutter described in Patent Document 1 includes means for winding up and winding down each sheet, which makes the structure and control complicated and increases the cost. In addition, since there is no member that connects and supports the front sheet and the rear sheet, strong wind may eliminate the gap between the front sheet and the rear sheet, possibly reducing the heat insulation performance.

[0006] Therefore, the present invention takes into account the above circumstances and aims to provide a double-layer sheet shutter with a simple structure that improves heat insulation performance. [Means for solving the problem]

[0007] The double-sheet sheet shutter according to the present invention is characterized by having a first sheet, a second sheet spaced apart from and facing the first sheet, a rectangular prism-shaped tube section extending in the width direction of the first and second sheets and fixed in parallel in the vertical direction between the inner surface of the first sheet and the inner surface of the second sheet, a rigid rod body enclosed within the tube section, and a hollow section formed by the first sheet, the second sheet, and the adjacent tube sections.

[0008] Furthermore, the pipe section is characterized by having a lower end pipe section located at the lower end, weights enclosed in the left and right ends of the lower end pipe section, and a rigid lower end rod located between the weights.

[0009] Furthermore, it is characterized by having an arc-shaped lower end sheet connecting the inner surface of the lower end of the first sheet and the inner surface of the lower end of the second sheet, and a cushioning material provided on the inside of the lower end sheet.

[0010] Furthermore, the sheet shutter using the double sheet described above is characterized by having a gap partially provided between the tubular portion and the first sheet or the second sheet, an intake hole on the second sheet that leads to the hollow hole, an exhaust hole on the first sheet for exhausting the compressed air from the hollow portion, a blowing means for sending compressed air into the hollow portion from the intake hole, and a temperature adjustment means for adjusting the temperature of the compressed air. [Effects of the Invention]

[0011] According to the present invention, the material comprises a first sheet, a second sheet spaced apart from and facing the first sheet, a prismatic tube section extending in the width direction of the first and second sheets and fixed in parallel in the vertical direction between the inner surfaces of the first and second sheets, a rigid rod body enclosed within the tube section, and a hollow section formed by the first sheet, the second sheet, and the adjacent tube section. As such, the hollow section becomes an air layer, improving the thermal insulation performance.

[0012] Furthermore, since the tube section includes a lower end tube section located at the bottom, weights enclosed in the left and right ends of the lower end tube section, and a rigid lower end rod located between the weights, it is possible to prevent the weights from shifting from side to side.

[0013] Furthermore, since it has an arc-shaped lower end sheet connecting the inner surface of the lower end of the first sheet and the inner surface of the lower end of the second sheet, and a cushioning material provided on the inside of the lower end sheet, it can absorb impact even when the double sheet comes into contact with the ground surface.

[0014] Furthermore, the sheet shutter using the double sheet described above has a gap partially provided between the pipe section and the first or second sheet, an intake hole on the second sheet leading to a hollow hole, an exhaust hole on the first sheet for exhausting compressed air from the hollow section, a blowing means for sending compressed air into the hollow section from the intake hole, and a temperature adjustment means for adjusting the temperature of the compressed air, so that the temperature of the air inside the double sheet can be adjusted and the heat insulation performance can be further improved. [Brief explanation of the drawing]

[0015] [Figure 1] This is a side cross-sectional view of a sheet shutter using a double sheet according to the present invention. [Figure 2] This is a magnified cross-sectional view of section A in Figure 1. [Figure 3] This is a magnified cross-sectional view of section B in Figure 1. [Figure 4] This is a transparent view of the lower end of the tube. [Figure 5]It is a cross-sectional view showing how compressed air ventilates through a hollow hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Hereinafter, a detailed description will be given with reference to the drawings.

[0017] As shown in Fig. 1, the sheet shutter 100 has a drum 31, on which the double sheet 10 is wound, accommodated in a winding box 30. By rotating the drum 31 with a motor, the double sheet 10 is lifted and lowered to partition or connect two spaces. The double sheet 10 includes a first sheet 11, a second sheet 12, a pipe portion 14, a rod body 15, and a hollow portion 17. By using the double sheet 10, the heat insulation performance, sound insulation performance, waterproof performance and dust resistance can be greatly improved.

[0018] At the width-direction side end of the double sheet 10, the first sheet 11 and the second sheet 12 are bonded to each other, so the side end has airtightness to prevent air leakage, and a rubber flap is covered over the bonded portion. The flap is fitted into a rail groove 33 of a frame post 32, and the lifting and lowering of the double sheet 10 is guided by the frame post 32.

[0019] (Regarding Sheets 11 and 12) As shown in Fig. 1, the first sheet 11 is provided on the outdoor space side, and the second sheet 12 is provided on the indoor space side. The first sheet 11 and the second sheet 12 are provided at positions spaced apart and opposite each other. The pipe portion 14 is provided in the spaced gap.

[0020] As shown in Fig. 3, the lower end sheet 13 is an arc-shaped sheet connecting an inner side surface 11a at the lower end of the first sheet 11 and an inner side surface 12a at the lower end of the second sheet 12. A cushioning material 18 made of urethane or the like is provided inside the lower end sheet 13, which absorbs impact when the double sheet 10 descends and contacts the ground.

[0021] By fixing the lower end sheet 13 so as to connect the inner side surfaces 11a and 12a of the lower end portions of the first sheet 11 and the second sheet 12, when water droplets fall due to rain or the like, water droplets can be prevented from adhering to the bonded portions between the first sheet 11, the second sheet 12 and the lower end sheet 13, and the fixation can be strengthened.

[0022] (Regarding Pipe Portion 14) As shown in FIGS. 2 and 3, the pipe portion 14 has a prismatic shape, is positioned between the inner side surface 11a of the first sheet 11 and the inner side surface 12a of the second sheet 12, extends in the width direction of the first sheet 11 and the second sheet 12, and is fixed in a plurality of rows in parallel in the vertical direction. The pipe portion 14 is arranged such that the width direction of the first sheet 11 and the second sheet 12 coincides with the major axis direction of the pipe portion 14. In the present embodiment, the pipe portion 14, the inner side surface 11a of the first sheet 11, and the inner side surface 12a of the second sheet 12 are fixed by a fixing means. In the present embodiment, a double-sided tape T is used, but an adhesive, thermocompression bonding, or the like may be used as long as they can be fixed, and the fixing method is not limited. The pipe portions 14 are fixed to the first sheet 11 and the second sheet 12 at constant pitches. The pitch interval of the pipe portions 14 is 30 cm to 150 cm.

[0023] In the present embodiment, the shape of the pipe portion 14 is a hollow quadrangular prism. By forming the pipe portion into a quadrangular prism, the contact area between the inner side surface 11a of the first sheet 11 and the inner side surface 12a of the second sheet 12 can be increased, and the fixation can be easily performed. In the present embodiment, a vinyl tube is used for the pipe portion 14. The shape of the pipe portion 14 is not limited to the hollow quadrangular prism, as long as it has flat fixing surfaces for fixing to the inner side surface 11a of the first sheet 11 and the inner side surface 12a of the second sheet 12 and can contain the rod body 15.

[0024] Since the pipe portion 14 is fixed to the first sheet 11 and the second sheet 12, the separation distance L between the first sheet 11 and the second sheet 12 is determined by the thickness of the pipe portion 14. The separation distance L corresponds to the thickness of the air layer, so the greater the thickness, the more the heat insulation performance can be improved.

[0025] As shown in Figure 4, the lower end pipe section 16 is used at the lower end of the double sheet 10 within the pipe section 14. The lower end pipe section 16 has the same shape as the other pipe sections 14, but it contains weights 19 at both the left and right ends, and a rigid lower end rod 15 is provided between the weights 19. The lower end pipe section 16 is made of, for example, a polyvinyl chloride pipe. By positioning the lower end pipe section 16 without any gaps between the weights 19, the weights 19 are prevented from moving from side to side.

[0026] (Regarding rod 15) The rod 15 is a rigid, elongated member enclosed within the pipe section 14, supporting the inflexibility of the first sheet 11 and the second sheet 12. In this embodiment, the rod 15 is a cylindrical iron pipe. The shape of the rod 15 is not limited to cylindrical; it may be filled, and is not limited to any rigid, elongated object that can be enclosed within the pipe section 14. By using a rigid rod 15, the first sheet 11 and the second sheet 12 are prevented from bending back and forth even when wind blows, and the hollow section 17 is prevented from collapsing.

[0027] By using the tubular section 14 and the rod 15, a certain weight is provided, so the first sheet 11 and the second sheet 12 can be stretched without bending and the hollow section 17 can be held. On the other hand, when being wound onto the drum 31, the first sheet 11 and the second sheet 12 are flexible and can be easily wound up, and since the first sheet 11 and the second sheet 12 are connected via the tubular section 14, it is possible to wind up the double sheet 10 on a single drum 31.

[0028] In the first sheet 11 and the second sheet, by providing the pipe section 14 and the rod section at a constant pitch, even if strong winds blow, the first sheet 11 will not be crushed towards the second sheet 12, thus maintaining the space of the hollow section 17 and preventing the loss of thermal insulation performance.

[0029] (Regarding the hollow section 17) As shown in Figure 2, the hollow section 17 is formed by the first sheet 11, the second sheet 12, and the adjacent pipe section 14. Since the hollow section 17 is an air layer between the first sheet 11 and the second sheet 12, the thermal insulation performance can be greatly improved. The widthwise side ends of the first sheet 11 and the second sheet 12 are tightly sealed and airtight. When the double sheet 10 is lowered, the hollow section 17 does not collapse, but when the double sheet 10 is rolled up and wound onto the drum 31, the hollow section 17 shrinks, preventing the drum 31 from becoming too wide.

[0030] Furthermore, when the double sheet 10 is wound onto the drum 31, it is wound so that the pipe sections 14 do not overlap. This prevents the drum 31 on which the double sheet 10 is wound from becoming too thick, and allows the winding box 30 to be made more compact.

[0031] (Regarding other components) As shown in Figure 5, the sheet shutter 100 using a double sheet 10 further includes a blowing means 21 for sending compressed air into the hollow section 17 and a temperature control means 22 for adjusting the temperature of the compressed air. The temperature control means 22 is electrically controlled, for example, a heater or a Peltier element. The blowing means 21 is a fan or a pump. The temperature control means 22 is connected to the blowing means 21.

[0032] The double sheet 10 is configured to circulate warm or cold air within the hollow section 17 after it has been lowered. The double sheet 10 is provided with an intake hole 23 and an exhaust hole 24. Preferably, the intake hole 23 and the exhaust hole 24 are located at opposite positions on the double sheet 10.

[0033] The intake port 23 is located on the second sheet 12 side and is a hole for passing warm or cold air into the hollow portion 17 of the double sheet 10. The exhaust port 24 is located on the first sheet 11 side and is a hole for exhausting the air inside the hollow portion 17 of the double sheet 10 to the outside.

[0034] The intake port 23 and exhaust port 24 may be one or multiple. By having multiple intake ports 23 and exhaust ports 24, the flow of compressed air within the hollow section 17 can be made uniform, and the temperature can be made uniform.

[0035] The air blowing means 21 and the temperature control means 22 may be placed inside the winding box 30 or near the sheet shutter 100. The air blowing means 21 and the temperature control means 22 may be the same device. Furthermore, instead of using the temperature control means 22, exhaust heat or heat absorption generated within the factory may be used.

[0036] A partial gap 20 is provided between the first sheet 11 or the second sheet 12 and the tubular section 14. When compressed air is sent into the hollow section 17, the compressed air passes through the gap 20 and circulates through the adjacent hollow sections 17 in sequence, thereby regulating the temperature of the air layer within the entire hollow section 17. Furthermore, the widthwise side ends of the double sheet 10 are bonded together, providing airtightness and preventing air from leaking from the first sheet 11 and the second sheet 12.

[0037] Specifically, as shown in Figure 5, the intake port 23 is located near the lower end of the second sheet 12. The operator connects the blower 21 and temperature control 22 to the intake port 23 using a hose or other connecting member, and sends temperature-controlled compressed air into the hollow section 17. Then, as indicated by the arrows, the compressed air circulates through the gap 20 from bottom to top within the hollow section 17 and is exhausted from the exhaust port 24 located at the upper end of the first sheet 11.

[0038] Furthermore, although not shown in the drawings, even if the operator does not manually connect the connecting member 25 to the intake port 23, a separate control unit or the like may be provided to control the system so that it automatically connects when the double sheet 10 is lowered, and automatically disconnects when the double sheet 10 is raised.

[0039] This allows for improved thermal insulation performance, for example, by adjusting the temperature inside the hollow section 17 to a higher temperature, even when the temperature outside the first sheet 11 is lower. In addition, improved thermal insulation performance can prevent condensation, thus preventing malfunctions of electronic machinery such as motors due to condensation. [Explanation of Symbols]

[0040] 100 Sheet Shutter 10 Double Sheet 11. Sheet 1 11a Inside surface 12. Second seat 12a Inside surface 13. Bottom sheet 14 Pipe section 15 Rods 16 Lower end rod 17 Hollow part 18 Cushioning material 19 weight 20 gaps 21. Blower means 22 Temperature adjustment means 23 Intake ports 24 exhaust holes 25 Connecting Members 30 reel boxes 31 Drums 32 Frame Columns 33 Rail groove L separation distance T Double-sided tape

Claims

1. The first sheet and, A second sheet is positioned opposite the first sheet, separated from it, Between the inner surface of the first sheet and the inner surface of the second sheet, there are rectangular prism-shaped tube sections that extend in the width direction of the first and second sheets and are fixed in parallel in the vertical direction, A rigid rod is enclosed within the aforementioned pipe section, The hollow portion formed by the first sheet, the second sheet, and the adjacent tubular portion, A double sheet sheet for a sheet shutter, characterized by having the following features.

2. Of the aforementioned pipe sections, the lower end pipe section located at the lower end, Weights enclosed in the left and right ends of the lower end tube section, A rigid lower end rod body located between the aforementioned weights, A double sheet sheet for a sheet shutter according to claim 1, characterized by having the following features.

3. An arc-shaped lower end sheet connecting the inner surface of the lower end of the first sheet and the inner surface of the lower end of the second sheet, A double sheet sheet shutter according to claim 1 or 2, characterized by having a cushioning material provided on the inside of the lower end sheet.

4. A sheet shutter using a double sheet of the sheet shutter described in claim 1 or claim 2, A gap is partially provided between the pipe portion and the first sheet or the second sheet, On the second sheet, an intake hole is provided that leads to the hollow hole, On the first sheet, there is an exhaust hole for exhausting the compressed air from the hollow portion, A blowing means for sending compressed air into the hollow portion from the intake hole, A temperature adjustment means for adjusting the temperature of the compressed air, A sheet shutter characterized by having the following features.

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