Shutter case for building shutter device

Abstract

To make a shutter case small and compact in constituting the shutter case 6 for covering a winding body 4 on which a shutter curtain 3 is wound.SOLUTION: A shutter case is made small and compact, in such a configuration that the shutter case 6 is divided into a large first case part 7 which covers a member device such as an opening / closing machine 5 together with a winding body 4 and a second case part 8 which does not need to cover the member device such as the opening / closing machine 5, the second case part 8 is constituted of a case plate 23 curved in an arc shape corresponding to the outer shape of the winding body, and the first case part and the second case part are coupled.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present invention relates to the technical field of shutter cases in shutter devices for buildings that are attached to openings such as entrances and exits of buildings. [Background technology]

[0002] Generally, a shutter device for a building is installed to open and close an opening such as an entrance or exit of a building or other structure. It comprises guide rails attached to both the left and right edges of the opening, a shutter curtain that is guided up and down by the guide rails to open and close the opening, and a winding body (winding drum, winding wheel) that is arranged in the ceiling above the opening and around which the shutter curtain is wound; the winding body is covered by a shutter case arranged in the ceiling. If the shutter case is for a heavy-duty shutter device to be installed in a large opening such as a building entrance, the case case is made by welding a case plate processed into an appropriate shape to a frame (beam, beam material) (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-218697 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned conventional shutter cases, the shutter case is integrally rectangular in shape throughout, and therefore the shutter case is long in the left-right direction corresponding to the left-right width of the opening to which the shutter device is to be installed. As a result, particularly in the case of long shutter cases, when assembled in a factory and transported to the site, a truck with a correspondingly long loading platform is required, which not only impairs the smoothness of transportation, but also creates the problem that if there are any obstacles at the installation site, it may be difficult to transport the long shutter case unloaded from the truck smoothly to the installation site, resulting in poor workability. Furthermore, in the conventional shutter cases, even in areas other than the area where the opening and closing mechanism and other component devices are arranged, they are rectangular in shape, just like the area where the opening and closing mechanism and other component devices are arranged, which means that a large installation space is required and compact arrangement is not possible, and these are the issues that the present invention aims to solve. [Means for solving the problem]

[0005] The present invention was created in consideration of the above-mentioned actual situation and with the aim of solving these problems.The invention of claim 1 is a shutter device for a building comprising guide rails provided on both left and right edge portions of an opening, a shutter curtain that is guided up and down by the guide rails to open and close the opening, a winding body that is arranged above the opening and on which the shutter curtain is wound, an opening / closing mechanism that is arranged on one left-right side of the winding body and drives the opening and closing of the winding body, and a shutter case that covers the winding body and the opening / closing mechanism, wherein the shutter case is divided into a rectangular first case portion that covers the opening / closing mechanism and the winding body on one side on which the opening / closing mechanism is arranged, and a round second case portion whose case plate is curved in an arc to cover the winding body extending from the first case portion, and the opposing left-right edge portions of the second case portion are connected to the side case plate on the inside left-right side of the first case portion. The invention of claim 2 is a shutter case in a shutter device for a building described in claim 1, characterized in that the first case part and the second case part are connected by engaging an arc-shaped extension part provided on the first case part with the second case part. The invention of claim 3 is a shutter case in a shutter device for a building described in claim 1 or 2, characterized in that the first case portion has aggregates fastened to its inner surface via fasteners and is assembled by welding the aggregates together. The invention of claim 4 is a shutter case in a shutter device for a building described in any one of claims 1 to 3, characterized in that the second case portion is constructed using a single case plate that is curved in an arc shape and has both upper and lower end edges that are engaged with engaging portions provided on the main body in a manner that allows them to be freely engaged and disengaged. The invention of claim 5 is a shutter case in a shutter device for a building described in claim 4, characterized in that the second case portion is composed of a plurality of single-plate-shaped case plates arranged in a continuous state in the left-right direction. The invention of claim 6 is a shutter case in a shutter device for a building according to claim 5, characterized in that adjacent case plates are connected by stacking opposing edge portions. Effect of the Invention

[0006] By adopting the invention of claim 1, the shutter case is made a split type having a first case part that covers the opening / closing mechanism and the winding body in the portion where the opening / closing mechanism is arranged, and a second case part that covers the portion of the winding body extending from the first case part.The first case part is rectangular in shape to ensure reliable covering of the opening / closing mechanism, while the second case part is arc-shaped to correspond to the winding body around which the shutter curtain is wound, thereby achieving compactness.Moreover, the first and second case parts are split with their edges connected to each other, which makes it convenient to transport and also reduces the installation space of the shutter case. By adopting the invention of claim 2, the first and second case parts are connected to each other by fitting the second case part into the arc-shaped extension part provided on the first case part, which eliminates the need for welding or fastening with screws, etc., making it possible to assemble the shutter case easily. By adopting the invention of claim 3, the rectangular first case part itself can be assembled by welding the frames fastened to the inner surfaces of the case plates via fasteners. As a result, assembly of the first case part is facilitated and welding marks on the outside can be prevented, eliminating the need for post-processing of welding marks and improving the workability of the assembly work. By adopting the invention of claim 4, the second case part can be assembled simply by engaging both upper and lower end edges of the case plate with the main body, thereby simplifying the configuration of the second case part and facilitating assembly and removal of the second case part, thereby improving workability. By adopting the invention of claim 5, even if the second case portion is long in the left-right direction, the case plates constituting the second case plate are divided into multiple pieces, making transportation easier and handling easier, thereby improving the workability of assembly work, etc. By adopting the invention of claim 6, when the second case portion is made into a divided structure using a plurality of case plates, the opposing edge portions of adjacent case plates are connected in a stacked state, thereby simplifying the structure of the connecting portion and improving the workability of assembly work, etc. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a schematic front view of the shutter device. [Diagram 2] 4 is a vertical cross-sectional side view of a shutter case portion of the shutter device. FIG. [Diagram 3] 13(A) and (B) are a front view and a plan view of the shutter case. [Figure 4] 4 is a perspective view showing a state in which the first case portion is assembled and a state in which the case plate unit is disassembled; FIG. [Diagram 5]1A, 1B, and 1C are a bottom view, a side view, and a front view of the top case plate unit. [Figure 6] 1A, 1B, and 1C are a plan view, a side view, and a front view of the bottom case plate unit. [Figure 7] 1A, 1B, and 1C are a side view, a plan view, and a front view of the outer left-right side case plate unit. [Figure 8] 1A, 1B, and 1C are a side view, a plan view, and a front view of an inner case plate unit in the left-right direction. [Figure 9] 13 is a side view of the top case plate unit, the bottom case plate unit, and the outer left and right case plate units assembled together. FIG. [Figure 10] 13A and 13B are perspective views showing the attachment state of the aggregates of each case plate unit, and a perspective view showing the state in which the aggregates are welded together via connecting materials. [Figure 11] 13A and 13B are a vertical sectional side view of a first case portion and an enlarged vertical sectional view of a main portion showing the attachment state of a front case plate. [Figure 12] 1 is an oblique view of the shutter case showing a state in which the first case portion and the second case portion are disassembled. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a shutter device for a building that is installed at an opening E such as an entrance or exit of a building or the like, the shutter device 1 being a weight-type device that includes guide rails 2 provided at both left and right edge portions of the opening E, a shutter curtain 3 that is guided up and down by the guide rails 2 to open and close the opening E, a winding body 4 that is provided on the ceiling H above the opening E and on which the shutter curtain 3 is wound, an electric opening / closing device 5 that is provided on one left-right side of the winding body 4 and drives the winding body 4 to open and close, and a shutter case 6 that covers the winding body 4 and the opening / closing device 5. Incidentally, the opening / closing machine 5 and the winding body 4 are interlocked by a chain transmission mechanism 5a, and components such as a control unit 5b for controlling the drive of the opening / closing machine 5 are arranged near the opening / closing machine 5. However, since all of these arrangement structures are conventionally known, details and illustrations thereof will be omitted.

[0009] The shutter case 6 is composed of a first case part 7 that covers that side part of the winding body 4 together with the opening / closing mechanism 5, chain transmission mechanism 5a, control unit 5b and other component devices, and a second case part 8 that covers the remaining long part of the winding body 4 extending left and right from the first case part 7.In the shutter case 6 of this embodiment, the first case part 7 covers not only part of the winding body 4 but also various component devices such as the opening / closing mechanism 5, so that the first case part 7 extends (protrudes) forward and upward and downward compared to the second case part 8, which does not need to cover such component devices, and therefore has a wider front-to-back width (larger area when cross-sectionally) and is therefore larger, while the second case part 8 is smaller. In this case, the first case part 7 is formed in a rectangular shape, while the second case part 8 is sufficient if it is capable of loosely covering the rolled-up body 4 with the shutter curtain 3 wound to its maximum extent. Therefore, as described below, the second case part 8 is configured by connecting multiple single-plate case plates 23 in an arc-shaped curved state in the left-right direction, making the first case part 7 large and the second case part 8 small.

[0010] The first case section 7 is configured to include a top case plate 9a, a front case plate 10, a bottom case plate 11a, an outer side case plate 12a on the left and right outer sides, and an inner side case plate 13a on the inside, and in this embodiment, the top case plate 9a, the bottom case plate 11a, and both side case plates 12a and 13a, excluding the front case plate 10, are fastened to the inner surfaces thereof with corresponding frames (beams, beams) 9b, 11b, 12b, and 13b via rivets 14, which are an example of fasteners, to form the case plate units 9, 11, 12, and 13, and the frames of these case plate units 9, 11, 12, and 13 are welded together to form an opening W on the front side, and the front case plate 10 is detachably attached to the opening W to cover (close) the first case section 7. In this case, the opening W opened by removing the front case plate 10 is designed to function as an inspection window (opening window, inspection hatch). Furthermore, the back surface of the first case portion 7 is open and faces the wall surface of the main body, so there is no need to cover it with a case plate. However, it goes without saying that if it is necessary to cover it, it can be covered by using a back case plate, for example. Incidentally, the fasteners for fastening the case plate and the frame are not limited to rivets, and it goes without saying that any suitable fasteners such as screws, bolts, nuts, etc. can be used as necessary. In addition, in this embodiment, the front case plate 10 is attached so as to be freely opened and closed to serve as an inspection hatch, but this is not limited to this, and the bottom case plate 11a or the outer surface case plate 12a may also be provided so as to be freely attached and detached to serve as an inspection hatch, or the front case plate 10 may be made into a case plate unit provided with framework like the other case plates, and an inspection hatch may be provided in the front case plate 10 so as to be freely opened and closed, and such configurations can be implemented as appropriate as needed.

[0011] Next, each case plate unit of the first case portion 7 will be described. First, the top case plate unit 9 is formed by attaching a framework formed from front, rear, left and right frame members 9b, 9c, 9d and 9e which form a four-sided frame to the inner surface (lower surface) of the rectangular top case plate 9a, and an intermediate frame member 9f which is fixed to the front and rear frame members 9b and 9c and is positioned in the middle in the left-right direction, and the top case plate 9a and these frame members 9b-9f are fastened together with rivets 14. A bent piece portion 9g which is bent downward is provided from the front edge of the top case plate 9a, and this bent piece portion 9g is bent into an inverted L-shaped cross section so as to fit into the inside of the case, and is configured as an attachment piece (remote stop) for attaching the front case plate 10 to be freely attached and detached (freely opened and closed) via screws 10a.

[0012] The bottom (lower) case plate unit 11 is formed by attaching a framework formed using front, rear, left and right frameworks 11b, 11c, 11d and 11e framed in a square shape to the inner surface (upper surface) of the rectangular bottom case plate 11a, with the bottom case plate 11a and frameworks 11b to 11e fastened together via rivets 14. A bent piece 11f bent upward is provided from the front edge of the bottom case plate 11a, and the front bent piece 11f is bent into an inverted L-shaped cross section so as to fit concavely into the inside of the case, and is configured as an attachment piece for attaching the front case plate 10 to be freely attached and detached (opened and closed) via screws 10a.

[0013] In addition, the left-right outer surface case plate unit 12 is formed in the same manner as described above by a pair of vertically long front and rear frames 12b and 12c fastened together via rivets 14 at the front edge and the front-to-rear middle portion of the inner surface (inner surface) of the outer surface case plate 12a, and a bent piece portion 12d is provided at the front edge of the outer case plate 12a as an attachment piece for attaching the front case plate 10 to be freely detachable (openable and closable) via screws 10a, in the same manner as described above. On the other hand, the inner side case plate unit 13, similar to the outer side case plate unit 12, is fastened together via rivets 14 with a pair of front and rear frames 13b and 13c attached to the inner surface of the inner side case plate 13a, and a bent piece portion 13d which serves as an attachment piece for the front case plate 10 is provided at the front end edge portion of the inner side case plate 13a. Furthermore, an arc-shaped cutout portion 13g is formed in the inner side case plate 13a so that the winding body 4 can pass through it in a loose manner, and further, an extension piece portion 13f extending toward the second case part 8 is formed on the upper, lower and front side edges, and the extension piece portion 13f is configured to be fitted into the inner left and right edges of the second case part 8 described later, thereby enabling a connection that seals the space between the first and second case parts 7, 8.

[0014] The case plate units 9, 11, 12, and 13 thus formed are then used to assemble the first case part 7 with its front open; specifically, the top case plate unit 9 and the bottom case plate unit 11 are assembled and fixed above and below the case plate units 12, 13 on the inner and outer sides in the left-right direction. Therefore, in this embodiment, for assembly between the top case plate unit 9 and the outer case plate unit 12, connecting members 15 are placed at an angle to act as diagonal braces at each corner that forms a 90 degree (right angle) angle between the left-right outer aggregate 9d of the top case plate unit 9 and the aggregates 12b, 12c on both the front and rear of the outer case plate unit 12, and the top case plate unit 9 and the outer case plate unit 12 are assembled and fixed by welding each tip of the connecting members 15 to the outer aggregate 9d and the front and rear aggregates 12b, 12c. Incidentally, when welding the connecting material 15 to the aggregate, it is necessary to perform welding so that the welding marks do not appear on the outer surface (surface of the case), and when the welding method is build-up welding as in the present embodiment, for example, as shown in Fig. 10(B), the connecting material 15 is placed in a bridging manner on the inner surfaces of the aggregates 12c and 11d, both of which are L-shaped, and the abutting peripheral parts of the connecting material 15 against the aggregates 12c and 11d are welded Y, and there is no particular limitation on the welding position as long as the welding marks do not appear on the outer surface (surface of the case). Of course, it goes without saying that various welding methods such as punch welding can be used as the welding method. In addition, between the bottom case plate unit 11 and the outer case plate unit 12, in the same manner as described above, connecting members 15 are installed at an angle across each corner between the left-right outer frame 11d of the bottom case plate unit 11 and the frame members 12b, 12c on both the front and rear of the outer case plate unit 12, and are welded to the outer frame 11d and the front and rear frame members 12b, 12c, thereby assembling and fixing the bottom case plate unit 11 and the outer case plate unit 12.

[0015] Similarly, the top case plate unit 9, bottom case plate unit 11 and inner case plate unit 13 are assembled and fixed by welding connecting members 15 that are spanned at an angle between the opposing corner portions of the inner left-right frames 9e, 11e of the top case plate unit 9 and bottom case plate unit 11 and the frames 13b, 13c on both the front and rear sides of the inner case plate unit 13. Incidentally, in the above-described embodiment, for example, when assembling and fixing the top case plate unit 9 and the inner case plate unit 13, the left-right inner frame 9e of the top case plate unit 9 and the front frame 13b of the inner case plate unit 13 are welded together via the connecting material 15. However, this is not limited to this, and the front frame 9b of the top case plate unit 9 and the front frame 12b of the inner case plate unit 13 may be welded together via the connecting material 15, or even both the front frame 9b and the left-right inner frame 9e of the top case plate unit 9 and the front frame 13b of the inner case plate unit 13 may be welded together via the connecting material 15, which can provide greater reinforcement.

[0016] In contrast, the second case part 8 is made of multiple single-plate case plates 23 curved into an arc and has a round shape, and covers in an arc the top, front and bottom of the roll-up body 4 (when the shutter curtain 3 is fully rolled up) extending from the first case part 7. As mentioned above, the top, bottom and front (front) sides are small (do not protrude) compared to the first case part 7.

[0017] Specifically, an arc-shaped cutout portion 13g is formed in the inner side case plate 13a of the left-right inner case plate unit 13 of the first case portion 7 so as to pass through the winding body 4 in a loose fit manner, and an extending piece portion 13f is formed from the edge of the cutout portion 13g toward the second case portion 8. In contrast, the case plate 23 constituting the second case section 8 is made of a flat steel plate and has a function of returning to a flat shape by the restoring force of being curved into an arc, and is assembled in such a manner that the lower edge 23a is engaged with the corner portion 25a of the groove-shaped lower support member 25 provided in the lower frame 24 (which may be a magnolia material provided in the magnolia section M) arranged in the magnolia section M, and the upper edge 23b is fitted and engaged with the engaging piece 26a provided in the upper engaging member 26 provided in the body side member X. The assembled case plate 23 is maintained in an arc shape by exerting the restoring force caused by curving a flat plate as described above, and is set so that it can be removed by releasing the engagement of either the upper or lower edge portions 23b, 23a.

[0018] Furthermore, the edge portion of the case plate 23 on the first case portion 7 side is laminated (overlapping) fitted onto the extending piece portion 13f formed on the inner side case plate 13a of the first case portion 7, so that the case plate 23 is connected without being fixed or fastened, thereby simplifying the assembly structure of the shutter case 6 and improving workability. Furthermore, the second case part 8 is a split type in which multiple case plates 23 are connected in the left-right direction, and the connection of the split parts is also configured in such a way that adjacent case plates 23 are connected in a state in which their opposing edge portions are stacked on each other, similar to the case of the connection with the first case part 7. Incidentally, when the case plate 23 is divided into three or more pieces, it is preferable to attach the case plate 23 on both the left and right sides by stacking them on the outside (surface side) of the adjacent case plate 23 on the inside in the left-right direction, as shown in Figure 3. This has the advantage that the case plate 23 adjacent to the first case section 7 can be removed without removing the adjacent case plate 23 when simply removing the front case plate 10 is too narrow for maintenance work, and also has the advantage that the case plate 23 on the outer end side in the left-right direction can be removed alone to perform maintenance work on the attachment portion of the winding section 4 to the body side.

[0019] In the present embodiment configured as described above, the shutter case 6 to be provided in the shutter device 1 for a building is assembled using the first and second case parts 7 and 8. In this case, the first case part 7 is large and rectangular in shape in order to cover the components such as the opening and closing mechanism 5 as well, whereas the second case part 8 does not need to cover the components such as the opening and closing mechanism 5 and only needs to cover the roll-up body 4 on which the shutter curtain 3 is wound, and therefore is small in size and made up of a case plate 23 curved in an arc shape to conform to the rolled shape, thereby enabling the shutter case 6 to be made compact, and the first and second case parts 7 and 8 are divided with their edges connected to each other, which makes it convenient to transport and also reduces the space required for installing the shutter case.

[0020] Moreover, in this case, the first and second case parts 7, 8 can be connected to each other by externally fitting the case plate 23 of the second case part 8 into the arc-shaped extension piece 13f provided on the first case part 7, eliminating the need for welding or fastening with screws, etc., and making it easy to assemble the shutter case. In this case, the rectangular first case portion 7 itself is assembled by fusing together the frames fastened to the inner surfaces of the corresponding case plates via rivets 14 via connecting material 15. As a result, assembly of the first case portion 7 is facilitated and welding marks can be prevented from appearing on the outside, eliminating the need for post-processing of the welding marks and improving the workability of the assembly work.

[0021] The second case part 8 is assembled by bending either one of the upper and lower end edges 23b, 23a of the flat case plate 23 into an arc while engaging it with either the upper or lower support member 26 or 25, and by engaging the other end edge 23a or 23b with the other support member 25 or 26. As a result, the structure of the second case part 8 can be simplified and the second case part 8 can be easily assembled and removed, improving workability.

[0022] Furthermore, the case plate 23 constituting the second case portion 8 is not a single piece but is divided into several pieces. As a result, even if the second case portion 8 is long in the left-right direction, the case plate 23 can be made small and compact, making it easier to transport and simplifying handling, thereby improving the workability of assembly work, etc. Furthermore, when adjacent ones of the multiple case plates 23 that make up the second case portion 8 are connected to each other, the opposing edge portions of the adjacent case plates 23 are connected in an overlapping state with the plates stacked on the front and back, which simplifies the structure of the connecting portions and improves the ease of assembly and other operations. [Industrial Applicability]

[0023] The present invention can be used as a shutter case for a shutter device for a building that is attached to an opening such as an entrance or exit of a structure such as a building, and as a method for manufacturing the shutter case. [Explanation of symbols]

[0024] 1 Shutter device 2 Guide rails 3. Shutter Curtain 4 Winding body 5. Opening and closing mechanism 6 Shutter Case 7 First case part 8 Second case part 9 Top case plate unit 9a Top case plate 9b Front aggregate 9c Rear bone material 9d Right outer aggregate 9e Left inner bone 10 Front case plate 11 Bottom case plate unit 11a Bottom case plate 12 Outer case plate unit 13 Inner case plate unit 13f Extension piece 14 Rivet 15 Connecting material 23 Case plate of second case section

Claims

1. A shutter device for a building comprising guide rails provided at both left and right edge portions of an opening, a shutter curtain that is guided up and down by the guide rails to open and close the opening, a winding body disposed above the opening and around which the shutter curtain is wound, an opening / closing mechanism disposed on one left-right side of the winding body to drive the opening and closing of the winding body, and a shutter case that covers the winding body and the opening / closing mechanism, The shutter case in a shutter device for a building is characterized in that the shutter case is divided into a rectangular first case portion that covers the opening / closing mechanism and the winding body on one side where the opening / closing mechanism is arranged, and a round second case portion whose case plate is curved in an arc to cover the winding body extending from the first case portion, and the opposing left and right end edges of the second case portion are connected to the inner left and right side case plates of the first case portion.

2. A shutter case in a shutter device for a building as described in claim 1, characterized in that the first case portion and the second case portion are connected by fitting an arc-shaped extension portion provided on the first case portion into the second case portion.

3. 3. A shutter case in a shutter device for a building as described in claim 1 or 2, characterized in that the first case portion is assembled by fastening aggregates to an inner surface thereof via fasteners and welding the aggregates together.

4. A shutter case in a shutter device for a building described in any one of claims 1 to 3, characterized in that the second case portion is constructed by using a single case plate that is curved into an arc shape and engaging both upper and lower end edges of the case plate with engaging portions provided on the main body side in a manner that allows them to be freely engaged and disengaged.

5. 5. The shutter case in the shutter device for a building according to claim 4, wherein the second case portion is formed by arranging a plurality of single case plates in a continuous state in the left-right direction.

6. 6. The shutter case in a shutter device for a building according to claim 5, wherein adjacent case plates are connected by stacking opposing edge portions of the case plates.

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