shutter

Abstract

To provide a shutter capable of suppressing disengagement of caulking of a winding pipe.SOLUTION: The shutter includes a shutter face member and a winding pipe 6 to which the shutter face member is connected so that the shutter face member can be wound. The winding pipe 6 has a pipe main body 61 made of a metal plate and a crimped portion 65 formed by caulking edges 62 and 63 along the longitudinal direction of the pipe main body 61 to join them. The caulking portion 65 protrudes toward the inner peripheral side of the winding pipe 6. An auxiliary wheel 9 is installed in the hollow portion of the winding pipe 6. Attached components such as the auxiliary wheel 9 are formed with a recess 92 that is open to the outer peripheral side of the winding pipe 6. The caulking portion 65 is arranged in the recess 92.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a shutter comprising a winding pipe, such as a steel pipe, which is formed by joining metal plates. [Background technology]

[0002] Conventionally, there has been known an external shutter that includes a shutter frame, a shutter surface material supported by the shutter frame, and a shutter case that houses the shutter surface material, and in which a cylindrical rotating drum capable of winding up the shutter surface material is installed inside the shutter case (see Patent Document 1). This rotating drum is made of, for example, an aluminum extrusion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-151843 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, it is possible to reduce costs by constructing the rotating drum in the external shutter described in Patent Document 1 not from an extruded profile, but from a winding pipe formed into a cylindrical shape by crimping (fastening) the edges along the longitudinal direction of a roll-formed metal plate. However, if the crimped portion of the winding pipe comes off when the shutter is in use, it may become impossible to wind up the shutter surface material.

[0005] An object of the present invention is to provide a shutter that can prevent the winding pipe from coming loose. [Means for solving the problem]

[0006] The shutter of the present invention comprises a shutter surface material and a winding pipe to which the shutter surface material is connected so as to be able to be rolled up, the winding pipe having a pipe main body formed of a metal plate and a crimped portion formed by crimping and joining edges along the longitudinal direction of the pipe main body, the crimped portion protruding toward the inner circumference of the winding pipe, an accessory part being installed in the hollow portion of the winding pipe, a recess formed in the accessory part that opens to the outer circumference of the winding pipe, and the crimped portion being disposed in the recess. The shutter of the present invention comprises a shutter surface material formed by connecting a plurality of slats, and a winding pipe to which the shutter surface material is connected so that it can be rolled up, the winding pipe having a pipe main body formed of a metal plate and a crimping portion formed by crimping and joining edges along the longitudinal direction of the pipe main body, the crimping portion protruding toward the outer periphery of the winding pipe, the shutter surface material being connected to the winding pipe by a mounting slat attached to the winding pipe or a mounting part connected to the mounting slat, the mounting slat or the mounting part having a side formed opposite the crimping portion, and the crimping portion being covered by a part that is continuous with the side. Effect of the Invention

[0007] According to the present invention, it is possible to provide a shutter that can prevent the winding pipe from coming undone. [Brief description of the drawings]

[0008] [Figure 1] 1 is a vertical cross-sectional view showing a shutter according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is an explanatory diagram showing a main part of the shutter according to the first embodiment. [Diagram 3] FIG. 6 is an explanatory diagram showing a main part of a shutter according to a second embodiment of the present invention. [Figure 4] FIG. 11 is an explanatory diagram showing a main part of a shutter according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [First embodiment] A first embodiment of the present invention will now be described with reference to the drawings. In Fig. 1, a shutter 1 according to the first embodiment is provided on the outdoor side of an opening in an exterior wall of a building such as a detached house. The aforementioned opening is provided with a window frame 2 formed by an upper frame 21, a lower frame 22, and left and right vertical frames 23. The shutter 1 includes a shutter frame 3, a shutter surface material 4 supported by the shutter frame 3 so that it can be opened and closed vertically and can be rolled up upward, and a shutter case 5 that stores the rolled up shutter surface material 4. Inside the shutter case 5, a cylindrical winding pipe 6 capable of winding up the shutter surface material 4 is provided. In the following description, the X-axis direction is the left-right direction of shutter 1 (the longitudinal direction of the winding pipe 6), the Y-axis direction perpendicular to the X-axis direction is the up-down direction of shutter 1, and the Z-axis direction perpendicular to the X and Y axes is the projection direction of shutter 1.

[0010] The shutter frame 3 has left and right vertical shutter frames 31. The shutter surface material 4 has multiple steel slats 41 connected vertically, and the uppermost slat 41A (mounting slat, top slat) of the multiple slats 41 is screwed to the winding pipe 6 using a screw 7 and a back plate 8, and multiple lower slats are connected to the uppermost slat 41A. The shutter case 5 is disposed above the left and right vertical shutter frames 31. Both longitudinal ends of the winding pipe 6 are supported by the shutter case 5 so as to be rotatable around an axis C (see Figure 3). The shutter case 5 has an opening 51 through which the shutter surface material 4 passes.

[0011] An auxiliary wheel 9 and other wheels are attached as accessories to the winding pipe 6. The auxiliary wheel 9 is disposed at the center in the X-axis direction of the hollow part of the winding pipe 6, and fits into recesses 611 and 612, which will be described later.

[0012] 2, the auxiliary wheel 9 has a wheel body 90 having a substantially circular outer periphery and a recess 92 formed on the outer periphery surface of the wheel body 90. The wheel body 90 has an outer periphery cylindrical portion 911, an intermediate cylindrical portion 912, and an inner periphery cylindrical portion 913, which are integrally connected to each other by a plurality of radially extending ribs 914. The outer periphery cylindrical portion 911 has fitting recesses 915, 916 that fit into the recesses 611, 612. In addition to the fitting recesses 915 and 916, the outer circumferential cylindrical portion 911 is formed with the recess 92, which is open to the outer circumferential side of the winding pipe 6, and the crimped portion 65, which will be described later, is disposed in the recess 92. The recess 92 has a pair of side surfaces 921 and 922 and a bottom surface 923. In the circumferential direction of the winding pipe 6, the side surface 921 faces a continuous portion 78 of the crimped portion 65, which will be described later, and the side surface 922 faces a continuous portion 79 of the crimped portion 65. In the radial direction of the winding pipe 6, the bottom surface 923 faces an inner piece portion 71 of the crimped portion 65. The circumferential direction is along the R direction that rotates around the axis C of the winding pipe 6.

[0013] As shown in FIG. 2, the winding pipe 6 has a pipe main body 61 roll-formed from a steel plate as a metal plate, and a crimped portion 65 as a joint that joins edge portions 62, 63 along the longitudinal direction (X-axis direction) of the pipe main body 61, and the pipe main body 61 is formed into a tubular shape by being crimped by the crimped portion 65. The pipe body 61 has recesses 611, 612 recessed toward the inner periphery and a positioning portion 613 for determining the mounting position of the uppermost slat 41A relative to the winding pipe 6, which are formed along the longitudinal direction of the pipe body 61. As shown in FIG. 2, the recess 611 has a pair of side pieces 614 and a bottom piece 615, and a locking piece 616 folded back from each of the pair of side pieces 614. In the recess 611, a plurality of back plates 8 are arranged at a predetermined interval along the longitudinal direction of the pipe body 61, and the above-mentioned locking piece 616 locks the back plates 8 so that they do not fall off. The recess 612 is formed with a pair of side pieces 617 and a bottom piece 618, and an accessory such as an auxiliary wheel 9 (see FIG. 1) is fitted into the recess 612 in the circumferential direction of the winding pipe 6. In this embodiment, the auxiliary wheel 9 is arranged in the hollow portion of the winding pipe 6 to reinforce the winding pipe 6. Therefore, the necessary strength for the winding pipe 6 can be obtained without providing a reinforcing part on the outer circumferential side of the winding pipe 6, and the tubular shape (approximately cylindrical shape) of the winding pipe 6 can be maintained. The recesses 611, 612 are located on an imaginary line V1 connecting the attachment position where the slat 41A is attached to the winding pipe 6 and the axial center position through which the axial center C of the winding pipe 6 passes. When the shutter face material 4 is unrolled and the slat 41 is aligned along the Y-axis direction as shown in FIG. 1, the recesses 611, 612 are arranged opposite each other in the Z-axis direction. In this embodiment, the recess 611 is arranged on the outdoor side and the recess 612 is arranged on the indoor side. The recesses 611, 612 are arranged at a distance in the circumferential direction from the crimping portion 65. Therefore, the positions where the recesses 611, 612 are formed in the circumferential direction are different from the joining positions by the crimping portion 65.

[0014] The crimped portion 65 has a first piece 70 and a second piece 75. The first piece 70 has an inner piece 71 located on the inner periphery side of the pipe body 61 and a first folded piece 72 folded back from the inner piece 71 to the outer periphery side. The second piece 75 has an outer piece 76 located on the outer periphery side of the pipe body 61 and a second folded piece 77 folded back from the outer piece 76 to the inner periphery side. The inner piece 71 is continuous and protrudes from the edge 62 of the pipe body 61 to the inner periphery side. The outer piece 76 is continuous with the edge 63 of the pipe body 61. In the crimped portion 65, the inner piece 71, the second folded piece 77, the first folded piece 72, and the outer piece 76 are overlapped in this order from the inner periphery side to the outer periphery side of the winding pipe 6. The first folded piece 72 is disposed between the outer piece 76 and the second folded piece 77, and the second folded piece 77 is disposed between the inner piece 71 and the first folded piece 72. A continuous portion 78 (a portion folded from the edge portion 62 and protruding toward the inner periphery side) where the inner piece 71 is continuous with the edge portion 62 forms one end in the width direction of the crimped portion 65, and a continuous portion 79 (folded portion) of the inner piece 71 and the first folded piece 72 forms the other end in the width direction of the crimped portion 65. The crimped portion 65 is disposed at a position on a virtual line V2 that intersects with the virtual line V1 at an angle θ of 90° or more and passes through the axis C.

[0015] In the above-described shutter 1, the dimension between the side surface 921 of the recess 92 and the continuous portion 78 is smaller than the dimension L between the continuous portion 78 and the continuous portion 79 of the crimped portion 65 (the width dimension of the crimped portion 65). The width dimension L of the crimped portion 65 is about 8 mm in this embodiment. Also, the dimension between the bottom surface 923 of the recess 92 and the inner piece portion 71 is smaller than the width dimension L of the crimped portion 65. Therefore, even if the crimped portion 65 tries to come off, the crimped portion 65 comes into contact with the bottom surface 923 or the side surface 921, and thus the crimped portion 65 is prevented from coming off.

[0016] [Second embodiment] A second embodiment of the present invention will now be described. The shutter according to the second embodiment is formed in roughly the same manner as the shutter 1 according to the first embodiment, but as shown in FIG. 3, it includes a take-up pipe 6B instead of the take-up pipe 6 described above. Compared to the winding pipe 6, the winding pipe 6B has a crimped portion 65B formed at a position different from the previously described crimped portion 65. The crimped portion 65B protrudes from the outer periphery of the winding pipe 6B, and is disposed above the mounting position where the slat 41A is mounted to the winding pipe 6B when the mounting position is in the position shown in Fig. 3. Since the crimped portion 65B abuts against the upper portion of the slat 41A to perform the positioning function, the previously described positioning portion 613 is not formed on the winding pipe 6B. The slat 41A is similar to that of the first embodiment, and in a state where it is attached to the winding pipe 6B, one end 411 of the slat 41A (the upper end in FIG. 3) has a side surface 412 that faces a continuous portion 78B (described later) of the crimped portion 65B in the circumferential direction, and in the second embodiment, the side surface 412 abuts against the continuous portion 78B to position the slat 41A. The slat 41A has an inner surface 413 that is continuous with the side surface 412. The crimped portion 65B is covered from the outer periphery by the side surface 412 and the inner surface 413 (portion that is continuous with the side surface 412) of the slat 41A.

[0017] The crimped portion 65B has a first piece 70B and a second piece 75B. The first piece 70B has an inner piece 71B located on the inner periphery side of the pipe body 61 and a first folded piece 72B folded back from the inner piece 71B to the outer periphery side. The second piece 75B has an outer piece 76B located on the outer periphery side of the pipe body 61 and a second folded piece 77B folded back from the outer piece 76B to the inner periphery side. The outer piece 76B is continuous and protrudes from the edge 63B of the pipe body 61 to the outer periphery side. The inner piece 71B is continuous to the edge 62B of the pipe body 61. In the crimped portion 65B, the inner piece 71B, the second folded piece 77B, the first folded piece 72B, and the outer piece 76B overlap in this order from the inner periphery side to the outer periphery side of the winding pipe 6B. The first folded piece 72B is disposed between the outer piece 76B and the second folded piece 77B, and the second folded piece 77B is disposed between the inner piece 71B and the first folded piece 72B. A continuous portion 78B (a portion folded from the edge portion 63B and protruding toward the outer periphery side) of the outer piece 76B continuing to the edge portion 63B forms one end in the width direction of the crimped portion 65B, and a continuous portion 79B (folded portion) of the outer piece 76B and the second folded piece 77B forms the other end in the width direction of the crimped portion 65B.

[0018] The dimension between the side surface 412 of the slat 41A and the continuous portion 78B described above is smaller than the dimension between the continuous portions 78B and 79B (the width dimension of the crimped portion 65B). Also, the dimension between the inner surface 413 of the slat 41A and the outer piece portion 76B is smaller than the width dimension of the crimped portion 65B. Therefore, even if the crimped portion 65B tries to come off, the crimped portion 65B comes into contact with the inner surface 413 or the side surface 412, so that the crimped portion 65B is prevented from coming off.

[0019] [Third embodiment] Hereinafter, an embodiment of the present invention will be described. The shutter of the third embodiment is formed in a manner generally similar to that of the shutter of the second embodiment, but as shown in FIG. 5, a mounting part 100 is attached to the winding pipe 6B using a screw 7 and a back plate 8, and a plurality of vertically connected slats 81 that constitute the shutter surface material 4 are connected to the mounting part 100. The mounting part 100 has a mounting part 101 having a pair of side pieces and a bottom piece and formed with a generally concave cross section, a groove part 102 continuing downward from one side piece of the mounting part 101 in Fig. 5, and a curved plate-like covering part 103 continuing upward from the other side piece of the mounting part 101 in Fig. 5. The mounting part 101 is screwed to the winding pipe 6B with the screws 7, the slat 81 is connected to the groove part 102, and the covering part 103 covers the crimped part 65B from the outer periphery. A protrusion 104 is formed on the bottom piece of the mounting part 101 and is disposed at the opening of the recess 611 to abut against the locking piece 616 , and the mounting part 100 is positioned by abutting against the locking piece 616 . The covering portion 103 has a side surface 106 formed on an end portion 105 separated from the mounting portion 101, and an inner surface 107 continuous with the side surface 106. In the circumferential direction of the winding pipe 6B, the side surface 106 faces the continuous portion 78B of the crimped portion 65B, and the inner surface 107, which is a portion continuous with the side surface 106, covers the crimped portion 65B from the outer circumferential side.

[0020] The dimension between the side surface 106 of the mounting part 100 and the continuous portion 78B described above is smaller than the dimension between the continuous portion 78B and the continuous portion 79B (the width dimension of the crimped portion 65B). Also, the dimension between the inner surface 107 and the outer piece portion 76B is smaller than the width dimension of the crimped portion 65B. Therefore, even if the crimped portion 65B tries to come off, the crimped portion 65B comes into contact with the inner surface 107 or the side surface 106, so that the crimped portion 65B is prevented from coming off.

[0021] [Variations] In the first to third embodiments, the winding pipes 6, 6B are made of steel plates, but the winding pipes 6, 6B may be made by roll-forming metal plates made of metal materials such as aluminum. Also, the slats 41 may be made of other materials instead of steel. In the first embodiment, the dimension between the bottom surface 923 and the inner piece portion 71 is smaller than the width dimension L of the crimped portion 65, but it may be equal to or larger than the width dimension L. Also, in the second and third embodiments, the dimension between the inner surface 107, 413 and the outer piece portion 76B is smaller than the width dimension of the crimped portion 65B, but it may be equal to or larger than the width dimension of the crimped portion 65B. In the first to third embodiments, the crimping portions 65, 65B are crimped by arranging each piece as described above, but other crimping shapes may be used as long as the side surfaces 106, 412, 921 can prevent the crimping from coming off. In addition, in the case of a crimping portion having another crimping shape, the crimping may be prevented from coming off by the side surface 922 of the recess 92, the crimping may be prevented from coming off by the side surface formed by deformation when the slat 41A is screwed, or the crimping may be prevented from coming off by the side surface of the side piece on the cover portion 103 side of the mounting portion 101. In the first embodiment, the recess 92 is formed in the auxiliary wheel 9, but the recess 92 may be similarly formed in other accessories such as the wheels 11 and 12. In addition, a dedicated part having the recess 92 for preventing the crimping from coming off may be used as an accessory to the winding pipe 6. In the second embodiment, the side surface 412 of the slat 41A abuts against the crimped portion 65B, but may be disposed away from the crimped portion 65B in the circumferential direction. In the third embodiment, the side surface 106 of the mounting part 100 is disposed at a circumferential distance from the crimped portion 65B, but the mounting part may be positioned by abutting against the crimped portion 65B. In addition, when positioning is performed as described above or when positioning is not required, the configuration of the protruding portion 104 may be omitted.

[0022] [Summary of the invention] The shutter of the present invention comprises a shutter surface material and a winding pipe to which the shutter surface material is connected so as to be able to be rolled up, the winding pipe having a pipe main body formed of a metal plate and a crimped portion formed by crimping and joining edges along the longitudinal direction of the pipe main body, the crimped portion protruding toward the inner circumference of the winding pipe, an accessory part being installed in the hollow portion of the winding pipe, a recess formed in the accessory part that opens to the outer circumference of the winding pipe, and the crimped portion being disposed in the recess. According to the shutter of the present invention, the crimped portion is disposed in the recess of the accessory, so that even if the crimped portion attempts to come off, it abuts against the recess, thereby preventing the crimped portion from coming off.

[0023] In the shutter of the present invention, the recess may have a pair of side surfaces and a bottom surface, and a dimension between one of the pair of side surfaces and the crimping portion may be smaller than a width dimension of the crimping portion. According to this configuration, when the crimped portion tries to come off, the dimensional relationship described above is satisfied, so that the crimped portion can be prevented from coming off by one of the side surfaces.

[0024] In the shutter of the present invention, the dimension between the bottom surface and the crimped portion may be smaller than a width dimension of the crimped portion. According to this configuration, when the crimped portion tries to come off, the dimensional relationship described above is satisfied, so that the bottom surface of the recess can more suitably prevent the crimped portion from coming off.

[0025] The shutter of the present invention comprises a shutter surface material formed by connecting a plurality of slats, and a winding pipe to which the shutter surface material is connected so that it can be rolled up, the winding pipe having a pipe main body formed of a metal plate and a crimping portion formed by crimping and joining edges along the longitudinal direction of the pipe main body, the crimping portion protruding toward the outer periphery of the winding pipe, the shutter surface material being connected to the winding pipe by a mounting slat attached to the winding pipe or a mounting part connected to the mounting slat, the mounting slat or the mounting part having a side formed opposite the crimping portion, and the crimping portion being covered by a part that is continuous with the side. According to the shutter of the present invention, the above-mentioned side surface of the mounting slat or mounting part faces the crimped portion, and this side surface can stop the crimped portion from coming off, thereby preventing the crimped portion from coming off.

[0026] In the shutter of the present invention, the side surface of the mounting slat may abut against the crimped portion in the circumferential direction of the winding pipe. According to this configuration, the mounting slat can be positioned by abutting the side surface of the mounting slat to the crimped portion as described above, and the mounting slat can be easily attached to the winding pipe at a predetermined position.

[0027] In the shutter of the present invention, the mounting slat or the mounting part is attached to the winding pipe, and the dimension between the side surface of the mounting slat or the mounting part and the crimping portion may be smaller than the width dimension of the crimping portion. According to this configuration, when the crimped portion tries to come off, the dimensional relationship described above is satisfied, so that the side surface can prevent the crimped portion from coming off.

[0028] In the shutter of the present invention, the dimension between the crimped portion and an inner surface of the mounting slat or mounting part that is continuous with the side surface may be smaller than the width dimension of the crimped portion. According to this configuration, when the crimped portion tries to come off, the dimensional relationship described above is satisfied, so that the inner surface can more suitably prevent the crimped portion from coming off. [Explanation of symbols]

[0029] 1... shutter, 100... mounting part, 101... mounting part, 102... groove part, 103... cover part, 104... protrusion part, 105, 411... end part, 106, 412, 921, 922... side, 107, 413... inner surface, 11, 12... wheel, 13, 14... balance spring, 15... shaft, 2... window frame, 21... upper frame, 22... lower frame, 23... vertical frame, 3... shutter frame, 31... shutter vertical frame, 4... shutter surface material, 41, 41A, 81... slat, 5... shutter case, 51... opening, 6, 6B... winding pipe, 61... pipe main body part, 611, 612, 92... recess, 613... positioning part, 614, 617... side piece, 615,618...bottom piece, 616...locking piece, 62,62B,63,63B...edge portion, 65,65B...crimping portion, 7...screw, 70,70B...first piece portion, 71,71B...inner piece portion, 72,72B...first folded piece portion, 75,75B...second piece portion, 76,76B...outer piece portion, 77,77B...second folded piece portion, 78,78B...continuous portion, 79,79B...continuous portion, 8...back plate, 9...auxiliary wheel (accessory part), 90...wheel body, 911...outer cylindrical portion, 912...middle cylindrical portion, 913...inner cylindrical portion, 914...rib, 915,916...fitting recess, 923...bottom surface, C...axis center, L...dimension, V1,V2...virtual line, θ...angle.

Claims

1. A shutter comprising a shutter surface material and a winding pipe to which the shutter surface material is connected so as to be capable of being wound up, the shutter being provided on the outdoor side of an opening in a building, The winding pipe has a pipe body portion formed of a metal plate and a crimped portion formed by crimping and joining edges of the pipe body portion along a longitudinal direction, The crimped portion protrudes toward the inner periphery of the winding pipe, An accessory is installed in the hollow portion of the winding pipe, The accessory is formed with a recess that opens to the outer circumferential side of the winding pipe, The crimping portion is disposed in the recess, The recess has a pair of side surfaces and a bottom surface, A dimension between one of the pair of side surfaces and the crimped portion is smaller than a width dimension of the crimped portion, A dimension between the bottom surface and the crimped portion is smaller than a width dimension of the crimped portion, A gap is formed between the recess and the crimped portion. A shutter characterized by:

2. The shutter includes a shutter surface material formed by connecting a plurality of slats, and a winding pipe to which the shutter surface material is connected so as to be capable of being wound up. The winding pipe has a pipe body portion formed of a metal plate and a crimped portion formed by crimping and joining edges of the pipe body portion along a longitudinal direction, The crimped portion protrudes toward the outer periphery of the winding pipe, The shutter surface material is connected to the winding pipe by a mounting slat attached to the winding pipe or a mounting part connected to the slat, The mounting slat or the mounting part has a side surface facing the crimping portion, The crimped portion is covered by a portion that is continuous with the side surface. A shutter characterized by:

3. The shutter according to claim 2, The side surface of the mounting slat abuts against the crimped portion in the circumferential direction of the winding pipe. A shutter characterized by:

4. The shutter according to claim 2 or 3, The mounting slat or the mounting part is attached to the winding pipe, The dimension between the side surface of the mounting slat or the mounting part and the crimped portion is smaller than the width dimension of the crimped portion. A shutter characterized by:

5. The shutter according to claim 4, The dimension between the inner surface of the mounting slat or the mounting part that is continuous with the side surface and the crimping portion is smaller than the width dimension of the crimping portion. A shutter characterized by:

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