Shutter case for a shutter device for a building and method for assembling the shutter case

Abstract

To easily assemble a shutter case 6 for covering a winding body 4 on which a shutter curtain 3 is wound so that a welding mark is not seen from the outside.SOLUTION: A shutter case 6 is configured such that a plurality of units are prepared such as upper surface case plate units constituted by fastening upper surface case plates 9a and aggregates 9b to 9e by rivets 14, the corresponding aggregates of the units are attached and fixed by being welded Y to the corresponding aggregates via connecting materials 15 provided in a bridging state to ensure that weld marks do not appear on a surface.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to the technical field of a shutter case in 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 a method of assembling the shutter case. [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] The above-mentioned conventional shutter cases are appreciated for their ease of assembly, but the welding marks are exposed to the outside, which mars the appearance, and as a result, it becomes necessary to remove the welding marks with a tool such as a sander, and it is also necessary to paint the surface of the case so that the removed areas are not noticeable, which results in poor workability. In response to this, an assembly method has also been proposed in which the fasteners are fastened using fasteners such as rivets rather than welding. In this case, fastening holes for passing the fasteners through are pre-drilled in the factory in the case plate or frame, and the fastening holes are then aligned and assembled using the fasteners. However, since the shutter case itself is large, there is a risk of the fastening holes becoming misaligned due to processing errors in the pre-drilled fastening holes. This type of defect is more likely to occur the larger the shutter case is, and in order to correct this, not only is it necessary to drill the fastening holes separately, which impairs workability, but when separate fastening holes are drilled, the pre-drilled fastening holes may be visible from the outside without the fasteners inserted, and in such cases there is a problem that the case plate must be replaced. These are the issues that the present invention aims to solve. [Means for solving the problem]

[0005] The present invention has been created in view of the above-mentioned circumstances and with the objective of solving these problems. The invention of claim 1 relates to a shutter device for a building comprising guide rails provided on both left and right edge portions of an opening, a shutter curtain that opens and closes the opening by being guided up and down by the guide rails, a roll-up body that is arranged above the opening and on which the shutter curtain is wound, and a shutter case that covers the roll-up body, wherein the shutter case is provided with a case section assembled using a case plate and an aggregate, the case plate and the aggregate being a case plate unit in which the aggregate is fastened to the inner surface of the case plate via a fastener, and the case section is assembled by welding together a plurality of the case plate units together the aggregates fastened to each case plate unit. attitude The shutter case for a shutter device for a building is characterized in that The invention of claim 2 is a shutter case in a shutter device for a building according to claim 1, characterized in that the bonding of the aggregates to each other is achieved by bonding a connecting material that is spanned between the aggregates to the aggregates. The invention of claim 3 is a case part including upper, front, bottom and side case plates. of A shutter case in a shutter device for a building as described in claim 1 or 2, characterized in that a case plate unit is formed by fastening aggregate to the case plates except for at least one of the case plates, and the case part is assembled with the removed case plate portion forming an opening, and the opening is attached so that the removed case plate can be opened, closed, or removed freely. The invention of claim 4 is a shutter case in a shutter device for a building according to claim 3, characterized in that the removed case panel is the front case panel. The invention of claim 5 is a shutter case in a shutter device for a building described in any one of claims 1 to 4, characterized in that the shutter device for a building has an opening / closing mechanism arranged on one left-right side of the winding body for opening and closing the winding body, and the shutter case comprises a large first case part that covers the opening / closing mechanism and the winding body on one side on which the opening / closing mechanism is arranged, and a small second case part that covers the winding body extending from the first case part, and at least the first case part is assembled by welding the aggregates of the case plate units together, and the first case part and the second case part are connected by fitting the end part of the second case part on the first case part side into an extending piece part provided on a side case plate on the second case part side provided on the first case part. The invention of claim 6 is a shutter case in a shutter device for a building described in claim 5, characterized in that the second case part covers the top, front and bottom of the roll-up body by forming the case plate into a round shape curved in an arc, and the first and second case parts are connected to each other by fitting the edge part of the round case plate on the first case part side into an extension piece part provided in an arc shape on the side case plate of the first case part. The invention of claim 7 is a method for assembling a shutter case in a shutter device for a building, which is configured to include guide rails provided on both left and right edges of an opening, a shutter curtain that is guided up and down on the guide rails to open and close the opening, a winding body arranged above the opening and around which the shutter curtain is wound, and a shutter case that covers the winding body, wherein the method for assembling the case case includes a case section assembled using case plates and aggregates, and includes the steps of: forming a plurality of case plate units by fastening aggregates to the inner surface of the case plates via fasteners; and assembling the case section by welding the aggregates fastened to the formed plurality of case plate units together. Effect of the Invention

[0006] According to the invention of claim 1 or 7, when the shutter case is provided with a case part assembled using a plurality of case plates and aggregates, the case plates are made into case plate units in which aggregates are fastened to the inner surface of the case plate via fasteners, and the case plate units are joined together by welding the aggregates fastened to each case plate unit. Assembled As a result, when the case plate units are welded together and assembled, the welding is performed between the aggregates fastened to the inner surfaces of the case plates via fasteners, and since there is no welding of the case plates, it is possible to prevent the welded areas from being visible from the outside. This eliminates the need for subsequent work such as painting the welded areas, improving workability, and even if the welded areas are not painted at all, the appearance is not marred. By adopting the invention of claim 2, the joining of the aggregates is achieved by welding the connecting material that is placed between the aggregates to the aggregates. As a result, even if the aggregates to be welded are separated from each other, they can be freely joined using the connecting material without welding the case plates, thereby improving workability. According to the invention of claim 3, the case part includes the upper, front, bottom and side case plates. OfIn the case where at least one of the case plate portions is to be used as an opening for inspection, the case plate to be used as the opening is excluded. hand By creating a case plate unit and configuring the removed case plate so that it can be opened, closed, or detached, the shutter case can be easily assembled, making it easy to perform maintenance inside the shutter case. By adopting the invention as defined in claim 4, the case plate that is removed to create the opening is the front case plate, so that maintenance workers can work from the front, improving workability. By adopting the invention of claim 5, when an opening / closing mechanism for driving the winding body to open and close is provided, the shutter case is provided with a large first case part that covers the opening / closing mechanism and the winding body on one side where the opening / closing mechanism is provided, and a small second case part that covers the winding body extending from the first case part, and when at least the first case part is assembled by welding the frames of the case plate units together, the connection between the first case part and the second case part is achieved by fitting the end part of the second case part on the first case part side into the extending piece part provided on the side case plate on the second case part side provided on the first case part, and as a result, there is no need to connect the first and second case parts using fixing means such as welding or fastening, which simplifies the assembly work of the shutter case and improves workability. By adopting the invention of claim 6, even if the second case part is formed by forming the case plate into a round shape curved in an arc to cover the winding body, the first case part and the second case part can be easily connected without being fixed by welding or the like. [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] (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 connection between the aggregates of each case plate unit, and the aggregates are welded together via a connecting material. FIG. [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. [Figure 13] The following drawing shows the second embodiment and is a front view of the shutter case part. [Figure 14] FIG. [Figure 15] 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. [Figure 16] 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 17] 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. [Figure 18] (A) and (B) are a front view and a plan view of the shutter case. 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, and the shutter device 1 is a weight-type shutter 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, and 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 the first case part 7 that covers the winding body 4 at the portion where the member devices such as the opening / closing mechanism 5, the chain transmission mechanism 5a, and the control unit 5b are arranged, and the second case part 8 that covers the remaining long portion of the winding body 4 extending in the left-right direction from the first case part 7. In the shutter case 6 of this embodiment, the first case part 7 covers not only a portion of the winding body 4 but also various member devices such as the opening / closing mechanism 5, so that the first case part 7 extends (projects) forward relative to the second case part 8 that does not need to cover such member devices, making the front-to-back width wider (having a large cross-sectional area when cut vertically), and thus the first case part 7 is large and the second case part 8 is small. Incidentally, the first case part 7 is narrower in the left-to-right direction than the second case part. If there is no need to set the shutter case 6 to a large or small size, the first and second case portions 7, 8 can be constructed as an integrated type having the same shape and the same vertical cross section. In addition, the rear side portion of the shutter case 6 is left open since it does not need to be closed, and is attached to the main body side by being fixed to the main body side member (wall surface in this embodiment) X. In addition, in the magnesia section M where the shutter curtain 3 is extended into the opening E, magnesia material is arranged so that it faces inside and outside (front and back), and the magnesia material 16 on the shutter case 6 side is fixed in a bridging manner to left and right case brackets (not shown) fixed to the main body side, and the bottom case plates 8b, 11a described later are fixed (fastened) to the magnesia material 16 by welding or via fasteners such as rivets (not shown).

[0010] The first case portion 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 sides, and an inner side case plate 13a on the inside. In this embodiment, corresponding frames (beams, beam materials) are fastened to the inner surfaces of the top case plate 9a, bottom case plate 11a, and both side case plates 12a and 13a, excluding the front case plate 10, via rivets 14, which are an example of fastening devices, to form corresponding top case plate units 9, bottom case plate unit 11, outer side case plate unit 12, and inner side case plate unit 13. The corresponding frames of each of these case plate units 9, 11, 12, and 13 are welded together as described below, to form the first case portion 7, which is open at the front with an opening W, and the first case portion 7 is covered (closed) by attaching the front case plate 10 to the opening W in a manner that allows it to be freely attached and detached. 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). Also, the back surface of the first case portion 7 is open and does not need to be covered with a case plate because it faces the body side member X as described above, but it goes without saying that if it needs to be covered, it can be covered with 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 of the case plate units 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 left-right inner case plate unit 13, similar to the outer 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 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 edge portion of the inner case plate 13a. Furthermore, a groove-shaped cutout portion 13e is formed in the inner side case plate 13a so that the winding body 4 can pass through it in a loose fit, and further, an extension piece portion 13f extending toward the second case part 8 is formed on the upper, lower and front side edges of the cutout portion 13e. 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, 13 thus formed are then used to assemble the first case part 7 with its front open. Specifically, as shown in Figure 4, the top case plate unit 9 and the bottom case plate unit 11 are assembled above and below the inner and outer case plate units 12, 13 on the left and right sides, and conversely, the inner and outer case plate units 12, 13 are assembled between the top case plate unit 9 and the bottom case plate unit 11.

[0015] The assembly of the units 9, 11, 12, and 13 by welding Y using the connecting material 15 will be described with reference to Figs. First, regarding the assembly by welding between the top case plate unit 9 and the outer case plate unit 12, in this case, the end edges of 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 face each other at right angles, and with connecting members 15 placed at an angle to act as diagonal braces at these opposing corners, the top case plate unit 9 and the outer case plate unit 12 are assembled and fixed by welding Y the ends of the connecting members 15 to the outer aggregate 9d and the front and rear aggregates 12b, 12c. As for assembly by welding between the top case plate unit 9 and the inner case plate unit 13, similarly to the above, connecting members 15 are arranged at an angle to span the corresponding corner portions of the inner frame 9e in the left-right direction of the top case plate unit 9 and the frame members 13b, 13c on both the front and rear sides of the inner case plate unit 13, and the connecting members 15 are welded Y to the inner frame 9e and the front and rear frame members 13b, 13c to assemble and fix the top case plate unit 9 and the inner case plate unit 13. Similarly, for the assembly and fixing of the bottom case plate unit 11 and the inner and outer side case plate units 13, 12 by welding, connecting members 15 are arranged at an angle between the opposing corner portions of the aggregates 11d, 11e on both the left and right sides of the bottom case plate unit 11 and the aggregates 13b, 13c, 12b, 12c on both the front and rear sides of the inner and outer side case plate units 13, 12, and the bottom case plate unit 11 and the inner and outer side case plate units 13, 12 are assembled and fixed by welding the connecting members 15 to each of the aggregates 11d, 11e, 13b, 13c, 12b, 12c.

[0016] Incidentally, when welding Y between the connecting material 15 and the frame, it is necessary to perform welding so that the weld marks do not appear on the outer surface (case plate surface). When build-up welding is used as the welding method as in this embodiment, for example, as shown in Figure 10 (B), when welding Y between the outer frame 11d of the bottom case plate unit 11 and the rear frame 12c of the outer case plate unit 12 via the connecting material 15, welding Y can be performed with the connecting material 15 placed between the plate surfaces that are in contact with the case plates 11a, 12a of the frame members 11d, 12c, which are all L-shaped. As a method of welding Y in this manner without reaching the case plate, when this is blank welding, there is a method in which a surface portion of the frame that does not come into contact with the case plate is provided, and the connecting material is placed on the non-contacting surface to perform welding Y. Such welding methods can be selected as necessary. In addition, 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 13b of the inner case plate unit 13 may also be welded together via the connecting material 15, and further, 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, and in this way, the structure can be made even more reinforced.

[0017] On the other hand, for the second case part 8, the top case plate unit 8a, the bottom case plate unit 8b, and the left and right inner and outer case plate units 8c and 8d are similarly formed in advance using corresponding case plates 8e and frameworks 8f, and when assembling and fixing each of the case plate units 8a to 8d, the frameworks 8f forming the corner portions can be assembled and fixed by welding them together in a state in which the connecting material 15 is bridged in the same manner as described above. The second case portion 8 is configured to be connected to the first case portion 7 by having an extension piece portion 13f extending from the inner case plate 13a of the inner case plate unit 13 constituting the first case portion 7 toward the second case portion 8 being fitted into the inner case plate unit 8c of the second case portion 8. In this case, the aggregates on the first and second case portions 7 and 8 sides are not connected to each other, but can be connected if necessary. Incidentally, the second case part 8 is long in the left-right direction, and for this reason, intermediate frame 8g is fastened between the front and rear frame 8f of the upper case plate unit 8a and the bottom case plate unit 8b with rivets (not shown), and the vertical support pillar 8h arranged at the front opening of the second case part 8 is attached and fixed by welding Y using connecting material 15, as in the case of fixing frame members to each other, and the front case plate 8i is configured to be freely attached and detached to this vertical support pillar 8h via screws.

[0018] 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 and second case parts 7 and 8 are each assembled by preparing a plurality of case plate units in which aggregates are fastened to the inner surface of the case plate via rivets 14, and then fusing Y the corresponding aggregates fastened to the case plate units together. As a result, it is possible to prevent the welded parts from being visible from the outside, and subsequent work to make the welded parts less noticeable is not required, improving workability, and even if the parts are not painted, the appearance is not marred.

[0019] Looking specifically at the first case part 7, the top case plate unit 9, the bottom case plate unit 11, and the inner and outer case plate units 13 and 12 in the left-right direction are constructed by attaching framework to the inner surfaces of the corresponding case plates 9a, 11a, 13a, and 12a via rivets 14, and the case plate units are connected to each other by welding Y the framework to the connecting members 15 that are stretched between the corresponding frameworks fastened to each of the case plate units 9, 11, 13, and 12, thereby assembling the first case part 7. As a result, even if the aggregates connected to each other by welding Y are spaced apart (including both separation due to processing errors and separation due to design), they can be securely attached and fixed by welding using the connecting material 15, improving workability and enabling reliable assembly of the first case part 7.

[0020] In this case, when assembling the first case section 7 using the case plate units 9, 11, 13, 12 on the top, bottom, and inner and outer left and right sides excluding the front case plate 10, assembly can be easily achieved by welding Y corresponding pieces of material fastened to these case plate units 9, 11, 13, 12 together using connecting materials 15. In this case, the front side forms an opening W, and since the front case plate 10 can be attached detachably (openably and closably) to this opening W using screws 10a, the opening W can be used as an inspection opening for various components such as the opening / closing mechanism 5, chain transmission mechanism 5a, and control section 5b, improving maintainability.

[0021] Furthermore, the shutter case 6 in which the present invention is embodied is composed of a first case portion 7 which is large enough to fit components such as the opening / closing mechanism 5 together with the winding body 4, and a small second case portion 8 into which only the winding body 4 needs to be fitted. The connecting portion of the first and second case portions 7, 8 is connected by fitting an extension piece portion 13e provided on the inner side case plate 13a of the left-right inner case plate unit 13 which constitutes the first case portion 7 into the left-right inner end edge portion of the first case portion 8. As a result, there is no need to connect the first and second case portions 7, 8 together using fixing means such as welding or fastening, which simplifies the assembly work of the shutter case 6 and improves workability.

[0022] When connecting the large first case part 7 and the small second case part 8 in this manner, the first case part 7 and the second case part 8 are connected by butting the opposing left and right inner side parts against each other as in the above-described embodiment. In this case, as in the above-described embodiment, a cutout portion 13e corresponding to the angular shape of the second case part 8 is formed in the inner side case plate 13a of the first case part 7, and the inner edge part of the second case part 8 is fitted into the extension piece portion 13f provided on the edge part of the cutout portion 13e, thereby connecting the first case part 7 and the second case part 8. However, it is needless to say that the present invention is not limited to such a connecting configuration. As an example of such an embodiment, for example, the first case part 7 may be configured so that the inner case plate 13a constituting the inner surface case plate unit 13 is absent or is small, so that the rear frame 13c and the left inner frame 11e of the bottom case plate unit 11 are exposed (visible), while the second case part 8 may be configured so that the inner case plate constituting the inner case plate unit 8c is absent or is small, so that the frame members 8i, 8j on that side are exposed, and corresponding frame members (for example, frame members 13c and 8i, 11e and 8j) are connected by welding Y via connecting member 15 in the same manner as in the above embodiment.

[0023] Of course, the present invention is not limited to the above-mentioned embodiment. The present invention can be configured as the shutter case 6 of the second embodiment shown in Fig. 13 and subsequent figures. In this case, the first case part 7 of the shutter case 6 is rectangular in shape, with the only difference being the configuration of the inner case plate 13a of the left-right inner case plate unit 13 from that of the first embodiment, and the other parts are the same. On the other hand, the second case part 8 is a round shape made by curving a plurality of single-plate case plates 23 into an arc shape, and covers the top, front, and bottom of the rolled body (the state in which the shutter curtain 3 is rolled up to the maximum) 4 extending from the first case part 7 in an arc shape. As described above, the upper and lower sides and the front (front) side are set to be small (do not protrude) compared to the first case part 7, but by further forming it in an arc shape, it can be configured to be at least smaller and more compact than the rectangular second case part 8 of the first embodiment by not having corner parts.

[0024] 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 plate shape by the restoring force of being curved into an arc shape, 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 made of magnesia wood) arranged on the magnesia section M, and the upper edge 23b is fitted and engaged with the engaging piece 26a provided on the upper engaging member 26 provided on the body side member X. The assembled case plate 23 is maintained in an arc shape by exerting the restoring force caused by curving the 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.

[0025] 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 13. 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 the area is too narrow for maintenance work just by removing the front case plate 10, 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.

[0026] In the second embodiment of the shutter case 6 thus configured, only the first case part 7 has corresponding case plate units 9, 11, 12, 13 formed by fastening frames to the inner surface of the case plate via rivets 14, and these case plate units 9, 11, 12, 13 are assembled and fixed by welding Y the corresponding frames to each other using connecting material 15.In this way, the first case body 7 can be made into a first case part 7 in which the welding marks are not exposed on the surface. The second case portion 8 is constructed by forming a single case plate 23 into an arc shape and attaching it to the body, which allows the structure of the second case plate 8 to be simplified. Moreover, like the first embodiment described above, the first case portion 7 is large in order to cover the opening / closing mechanism 5 etc., but the second case portion 8 is small in size and is of a split type, so that it can be transported in its split individual state, facilitating the transportation operation. In this case, the case plate 23 of the second case portion 8 is a single plate curved into an arc, which has the advantage that the structure of the second case portion 8 can be simplified. [Industrial Applicability]

[0027] The present invention can be used as a shutter case and a shutter case assembly method 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. [Explanation of symbols]

[0028] 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 11b Front aggregate 12 Outer case plate unit 12a Outer case plate 12b Front aggregate 13 Inner case plate unit 13a Inner case plate 13b Front aggregate 14 Rivet 15 Connecting material W Opening

Claims

1. A shutter device for a building is provided with 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 that is disposed above the opening and around which the shutter curtain is wound, and a shutter case that covers the winding body. When the shutter case is configured to have a case part assembled using a case plate and a frame, The case plate and the aggregate are a case plate unit in which the aggregate is fastened to the inner surface of the case plate via fasteners, A shutter case for a shutter device for a building, characterized in that the case portion is assembled by welding together a plurality of case plate units and aggregates fastened to each case plate unit.

2. 2. The shutter case in the shutter device for a building according to claim 1, wherein the bonding between the aggregates is performed by bonding a connecting member that is bridged between the aggregates to the aggregates.

3. A case plate unit is formed by fastening a frame to the case plates excluding at least one of the top, front, bottom, and side case plates that constitute the case portion, The case part is assembled in a state where the removed case plate part becomes an opening part, 3. The shutter case in a shutter device for a building according to claim 1 or 2, wherein the opening is provided with a removed case plate which is attached so as to be freely opened, closed or detachable.

4. 4. The shutter case in a shutter device for a building according to claim 3, wherein the case panel that is removed is the front case panel.

5. The building shutter device is provided with an opening / closing mechanism for driving the winding body to open and close on one of the left and right sides of the winding body, The shutter case includes a large first case portion that covers the opening / closing mechanism and the winding body at one side where the opening / closing mechanism is disposed, and a small second case portion that covers the winding body extending from the first case portion, and is constructed such that at least the first case portion is assembled by welding the frameworks of the case plate units together; A shutter case in a shutter device for a building described in any one of claims 1 to 4, characterized in that the first case portion and the second case portion are connected by fitting an end portion of the second case portion on the first case portion side into an extending piece portion provided on a side case plate on the second case portion side provided on the first case portion.

6. The second case part covers the top, front and bottom of the roll-up body by forming the case plate into a round shape curved in an arc, and the first and second case parts are connected to each other by fitting the edge portion of the round case plate on the first case part side into an extension piece portion provided in an arc shape on the side case plate of the first case part.A shutter case for a shutter device for a building as described in claim 5, characterized in that

7. A shutter device for a building is provided with 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, and a shutter case that covers the winding body. When the shutter case is configured to have a case part assembled using a case plate and a frame, A method for assembling the case includes: - forming a plurality of case plate units by fastening aggregates to an inner surface of the case plate via fasteners; a step of assembling a case part by welding the aggregates fastened to the plurality of case plate units formed; A method for assembling a shutter case in a shutter device for a building, comprising the steps of:

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