Shutter curtains for building shutter devices

Abstract

To improve the durability of a spacer member by preventing the wear of the spacer member, which is provided in a recessed groove portion of interlock connection in a shutter curtain to reduce or prevent water accumulation in the recessed groove portion, the shutter curtain made up of upper and lower adjacent slats connected by interlock connection between a lower connecting portion of the upper slat and an upper connecting portion of the lower slat.SOLUTION: A spacer member 10 is assembled to an upper connection 8 in a free-fitting state having a clearance with a lower connection 9.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to the technical field of shutter curtains in building shutter devices that are installed to open and close openings such as entrances and exits in various buildings such as houses and condominiums. [Background technology]

[0002] Nowadays, shutter devices for buildings are sometimes installed at openings such as entrances and exits of various buildings such as houses and condominiums, and are equipped with shutter curtains that are guided up and down on guide rails provided on the left and right sides of the opening to open and close the opening. In this case, the shutter curtain is formed by connecting a series of multiple slats that are long in the left-right direction in an interlocking manner, and the interlocking is configured so that the lower connecting part provided on the upper slat and the upper connecting part provided on the lower slat are connected by sliding relative to the left and right.The shutter curtain configured in this way is wound in a spiral shape on a winding body (winding drum, winding wheel) arranged above the opening, so that the adjacent upper and lower slats are connected at the interlocking joint so that they can swing freely relative to each other in the front-to-rear direction. When a shutter device equipped with such a shutter curtain is installed in an opening that separates the indoors and outdoors, water such as rainwater or cleaning water may splash onto (become wet with) the outdoor side of the shutter curtain when it is in the closed position. Most of the water that splashes onto the outdoor side will run off along the outdoor side, but some water may enter the gap (groove-shaped portion) formed in the interlock joint, and water that has entered the gap in this way will be subjected to surface tension and will remain in the gap. When the shutter curtain is wound onto the winding body and the opening is opened while water remains in the gap, the gap widens and the surface tension disappears, causing the water that had been remaining in the gap to flow down into the shutter case and then further fall from the shutter case into the room. In order to avoid this, it has been proposed to provide a spacer material to prevent water from pooling in the gaps at the interlock joints (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 3-120793 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in all of the spacer materials of the above-mentioned prior art, the spacer material provided in the upper connecting part is configured to seal at least the opening portion of the groove-shaped gap provided in the upper and lower connecting parts in a tightly fitting manner, and is long enough to reach the abutment portion where the upper connecting part abuts against the lower connecting part so as to be able to swing freely in the forward and backward directions, thereby preventing water from entering the gap. However, as mentioned above, shutter curtains need to be wound in a spiral shape around a winding body, and as a result, the slats are configured to swing relatively in the front-to-back direction at their interlocking joints. As a result, the tightly fitted parts that seal the gap between the upper and lower connecting parts of the conventional spacer material and the abutment parts where the upper connecting part abuts the lower connecting part so as to be able to swing freely in the front-to-back direction are subjected to a sliding action every time adjacent slats swing relatively in the front-to-back direction, which promotes abrasion and results in poor durability. Moreover, the shutter curtain is assembled by interlocking adjacent slats together, in which case the interlocking is achieved by fitting one end of the upper connecting part of one slat into the other end of the lower connecting part of the other slat, and then moving the slats relative to each other in the left-right direction. In this case, if the spacer material is provided in a tightly fitted state, the spacer material provided on one slat must be slid left-right in a state of sliding contact with the other slat when the interlocking is achieved, and when the slats are slid left-right in such a sliding contact state, a sliding resistance is generated, which not only prevents the interlocking by a smooth sliding movement, but also causes the spacer material to be easily displaced due to the sliding resistance. Furthermore, in the conventional system, the spacer material is extended to the contact portion where the upper connecting portion contacts the lower connecting portion to support the system so as to be freely swingable in the forward and backward directions, so when the spacer material is incorporated into an existing shutter curtain, the positional relationship between adjacent slats will be shifted up and down by the amount of the spacer material. As a result, the closed position, rolled-up position, etc. of the shutter curtain will change from the existing one, and the set state will not be achieved, so it will be necessary to set it again, which will cause problems such as the system not being able to be installed as is in an existing shutter device. The objective of the present invention is to solve these problems. [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 buildings, which is configured by connecting adjacent slats so that they can swing relatively forward and backward in an interlocking connection that allows the lower connecting part and the upper connecting part of the upper and lower adjacent slats to move relatively in the left and right direction in a shutter curtain that is guided by guide rails provided on both the left and right sides of a building opening, and the interlocking connection is a loose-fitting type in which a groove-like part with an opening on the outdoor side is provided between the upper connecting part and the lower connecting part, and the groove-like part A spacer material is provided in a state extending from the opening of the recessed groove-shaped portion to the groove inner part, and the spacer material is assembled to one of the upper connecting part and the lower connecting part, and faces the other connecting part with a gap therebetween over the entire length extending from the opening part to the groove inner part.The present invention relates to a shutter curtain for a shutter device for a building. The invention of claim 2 relates to an interlock connection in which the leading edge of the upper connecting part abuts against a support part formed on the leading end side of the lower connecting part, and the connecting part swings relatively in the front-rear direction with the abutting part as a swing fulcrum. is formed at the inner end of the groove of the concave groove portion. , the spacer material is The tip edge is at the back end of the groove of the concave groove portion. Does not reach the contact area The length is set to the innermost part of the groove. 2. A shutter curtain in a shutter device for a building according to claim 1. The invention of claim 3 is a shutter curtain in a shutter device for a building described in claim 1 or 2, characterized in that the interlock connection is a connection in which the upper connecting part is fitted inside the lower connecting part, and the spacer material is assembled to the upper connecting part in a loose-fitting state with a gap in the lower connecting part, or is assembled to the lower connecting part in a loose-fitting state with a gap in the upper connecting part. The invention of claim 4 is a shutter curtain in a shutter device for a building as described in claim 3, characterized in that when the spacer material is assembled to the upper connecting part, it is assembled by fitting it externally from above into the curved portion formed in the upper connecting part, and when the spacer material is assembled to the lower connecting part, it is assembled by fitting it internally from below into the curved portion formed in the lower connecting part. The invention of claim 5 is a shutter curtain in a building shutter device described in claim 3 or 4, characterized in that when the spacer material is assembled to the upper connecting portion, the spacer material is supported in a state in which the upper connecting portion is clamped from above and below. The invention of claim 6 is a spacer material The upper connection part is attached to When the adjacent slats are in an expanded position in which the opening portion of the concave groove portion is expanded by relatively swinging the adjacent slats in the front-rear direction, the expanded opening portion The spacer material inserted in the spacer is attached to the upper connecting part. 6. A shutter curtain in a shutter device for a building according to any one of claims 3 to 5. The invention of claim 7 is a spacer material The upper connection part is attached to The upper connection part of the adjacent slats is fitted to the outside of the interlocking part. The spacer material is Moves along the outer surface of the curved part of the upper connector This is the assembly that was made.6. A shutter curtain in a shutter device for a building according to any one of claims 3 to 5. The invention of claim 8 is a spacer material The assembly to the upper connecting part of the spacer is done by forcing the spacer material beyond the upper connecting part. 8. A shutter curtain in a shutter device for a building according to claim 3. The invention of claim 9 is a spacer material Attach the upper connector to the The spacer material has a groove-shaped opening at its tip edge on the outdoor side. but The lower connecting portion is in contact with or adjacent to the upper connecting portion with a gap therebetween. It is assembled 9. A shutter curtain in a shutter device for a building according to any one of claims 3 to 8. The invention of claim 10 is a shutter curtain in a shutter device for a building according to any one of claims 3 to 9, characterized in that the spacer material is adhered to the upper connecting part or the lower connecting part to be assembled. The invention of claim 11 is as follows: A shutter curtain that opens and closes a building opening is guided by guide rails provided on both the left and right sides of the opening, and is configured by connecting adjacent slats so that they can swing freely relative to each other in the front-to-rear direction by interlocking the lower and upper connecting parts of adjacent slats vertically, allowing the lower and upper connecting parts to move relatively left and right in a shutter device for a building. The interlocking connection is a loose-fitting connection in which a groove-shaped portion with an opening on the outdoor side is provided between the upper connecting portion and the lower connecting portion, and a spacer material for reducing or preventing water from accumulating in the groove-shaped portion is provided with a gap in the groove-shaped portion, and the interlocking connection is a connection in which the upper connecting portion is fitted inside the lower connecting portion, and the spacer material is assembled to the upper connecting portion in a loose-fitting state with a gap in the lower connecting portion, The spacer material has an outdoor end edge located at an opening of the groove-shaped portion, the outdoor end edge being in contact with or adjacent to the upper connecting portion with a gap therebetween. A shutter curtain in a shutter device for a building. Effect of the Invention

[0006] According to the invention as defined in claim 1, wear of the spacer material provided in the recessed groove-like portion of the interlock coupling portion can be prevented, which contributes greatly to improving the durability of the spacer material. By using the invention as defined in claim 2, the spacer material does not affect the positional relationship between adjacent slats above and below, and even when the spacer material is attached to an existing shutter device, there is no need to reset the fitting state, which contributes to improved workability. According to the invention as defined in claim 3, the spacer material can be provided in the groove-shaped portion with a gap therebetween relative to the lower connecting portion or the upper connecting portion. According to the invention as defined in claim 4, the spacer material can be easily attached to the upper connecting portion or the lower connecting portion. According to the invention as defined in claim 5, the spacer material can be attached to the upper connecting portion in a reliable manner without being accidentally displaced. By adopting the invention as defined in claim 6, even in the case of existing shutter devices, the spacer material can be easily assembled to the upper connecting portion while the slats remain interlocked with each other, thereby significantly improving work efficiency. According to the seventh aspect of the present invention, the spacer material can be easily attached to the upper connecting portion in a non-interlocked state. According to the invention as defined in claim 8, the spacer material can be reliably assembled to the upper connecting portion in a state in which it is prevented from coming off. According to the invention as defined in claim 9, accumulation of water in the opening portion of the groove-like portion can be effectively reduced or prevented. According to the invention as defined in claim 10, the spacer material can be attached reliably to the upper connecting portion or the lower connecting portion without being misaligned. By adopting the invention of claim 11, This prevents wear on the spacer material provided in the groove-like portion of the interlock connection, greatly contributing to improving the durability of the spacer material, and also effectively reduces and prevents water from accumulating in the opening of the groove-like portion. [Brief description of the drawings]

[0007] [Figure 1] FIG. [Diagram 2] FIG. 2 is a vertical cross-sectional view of the shutter device. [Diagram 3] FIG. 4 is a partial cross-sectional view of the shutter curtain. [Figure 4] 1A and 1B are a side view and a rear view of the spacer material. [Diagram 5] FIG. [Figure 6] 13A, 13B, and 13C are diagrams showing an example of a method for attaching a spacer material when not interlocked. [Figure 7] 13A, 13B, and 13C are diagrams showing an example of a method for attaching a spacer material when interlocking. [Figure 8] 1A and 1B are a front view and a right side view of the curtain part. [Figure 9]FIG. 11 is a partial cross-sectional view of a shutter curtain showing a second embodiment. [Figure 10] 13A and 13B are a side view and a rear view of a spacer material showing a second embodiment. [Figure 11] FIG. 11 is a partial cross-sectional view of a shutter curtain showing a third embodiment. [Figure 12] 13A and 13B are a side view and a rear view of a spacer material according to a third embodiment. [Figure 13] FIG. 11 is a partial cross-sectional view of a shutter curtain showing a fourth embodiment. [Figure 14] 13A and 13B are a side view and a rear view of a spacer material according to a fourth embodiment. [Figure 15] 13A, 13B, and 13C are diagrams showing an example of a method for attaching a spacer material in the fourth embodiment. 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, 1 is a shutter device for a building, which is constructed using various components such as guide rails 2 provided at both left and right edges of an opening such as an entrance, a shutter curtain 3 guided up and down by the guide rails 2 to open and close the opening, a winding body 4 provided above the opening and winding the shutter curtain 3 in a spiral shape, an electric opening / closing mechanism 5 for driving the winding body 4 in forward and reverse rotation, and a shutter case 6 that houses the winding body 4 and the opening / closing mechanism 5, all of which are conventional. The present invention is embodied in the shutter curtain 3 of the shutter device 1 constructed in this way, which will be described in detail below. Incidentally, it goes without saying that the shutter device 1 may be of a manual type rather than an electric type.

[0009] The shutter curtain 3 is configured as a series of multiple (an appropriate number of) slats 7 which are long in the left-right direction and interlocked in the vertical direction, and in this embodiment, the slat 7 is configured to include a flat slat surface portion 7a, an upper connecting portion 8 formed on the upper side of the slat surface portion 7a, and a lower connecting portion 9 formed on the lower side. A pair of adjacent slats 7 arranged vertically are connected in a series (joined) in an interlocked state, with the lower connecting part 9 of the upper slat 7 and the upper connecting part 8 of the lower slat 7 being fitted into one left-right end edge of the upper connecting part 8 and the other left-right end edge of the lower connecting part 9, and the slats 7 being moved relative to each other in the left-right direction, allowing them to swing freely relative to each other in the front-to-back direction.A groove-shaped portion S with an opening E on the outdoor side is formed in the interlocked joint R, and a spacer material 10 is provided with a gap to reduce or prevent water from entering the groove-shaped portion S.

[0010] The upper connecting portion 8 formed on the slat 7 is formed so as to be located on the indoor side from the upper edge of the slat surface portion 7a, and is configured to include a first curved portion 8a bent from the upper edge of the slat surface portion 7a toward the indoor side, a first curved portion 8b bent from the indoor side edge of the first curved portion 8a toward the outdoor side in a folded-back manner upward, and a second curved portion 8c bent upward from the upper edge of the first curved portion 8b (located in the middle portion of the first curved portion 8a in the indoor / outdoor direction) and further bent downward toward the indoor side in a folded-back manner. In this case, the first curved portion 8b and the second curved portion 8c are connected by a circular arc-shaped first corner portion 8d. Here, the tip edge 8e of the second curved portion 8c is curved in an arc shape with the tip edge closing on the indoor side. The second curved portion 8c of the upper connecting portion 8 is a curved portion onto which a spacer material 10 is fitted as described later, and corresponds to the curved portion formed in the upper connecting portion of the present invention.

[0011] In contrast, the lower connecting portion 9 is configured to include a third curved portion 9a that is curved upward from the lower edge of the slat surface portion 7a toward the inside of the building, a fourth curved portion 9b that extends upward from the indoor side edge of the third curved portion 9a and is further curved downward toward the indoor side, and a second curved portion 9c that is curved upward from the indoor side lower edge of the fourth curved portion 9b toward the outdoors side, and in this case, the fourth curved portion 9b and the second curved portion 9c are connected by a second arc-shaped corner portion 9d. Incidentally, the fourth curved portion 9b is not curved and folded back in an arc shape like the first, second and third curved portions 8b, 8c and 9a, but has a square shape with arc-shaped third and fourth corner portions 9e and 9f formed on both sides inside and outside the outdoor portion. The fourth curved portion 9b of the lower connecting portion 9 is a curved portion into which a spacer material 13 of a fourth embodiment described later is fitted, and corresponds to the curved portion formed in the lower connecting portion of the present invention.

[0012] When the upper connecting portion 8 and the lower connecting portion 9 thus configured are interlocked together, the connecting portion R is configured such that the upper connecting portion 8 fits loosely into the lower connecting portion 9 with the groove-like portion S, and the tip edge 8e of the second curved portion 8c of the upper connecting portion 8 is abutted and supported from above by the second corner portion 9d of the lower connecting portion 9. The vertically adjacent slats 7 are configured to swing relatively in the front-rear direction with the abutment portion of the tip edge 8e of the second curved portion against the second corner portion 9d as a swing fulcrum, and can swing and change between a position in which the adjacent slat surface portions 7a are flush (flat) and a bent position in which they are spirally wound around the winding body 4. In this embodiment, the second corner portion 9d of the lower connecting portion 9 corresponds to a support portion formed at the tip edge portion of the lower connecting portion of the present invention.

[0013] In this case, the groove-like portion S is formed by a first groove-like portion S1 which is a straight groove extending in the indoor / outdoor direction with the outdoor side portion as the opening E and the indoor side portion as the groove bottom, and a second groove-like portion S2 which branches off in a curved shape upward toward the indoor side from the indoor / outdoor middle portion of the first groove-like portion S1. The first groove-shaped portion S1 is configured such that the curved portion of the first curved portion 8b becomes the groove bottom piece 8f, the first bent portion 8a and the lower piece of the first curved portion 8b continuing continuously from the first bent portion 8a become the lower groove piece 8g, and the curved portion of the third curved portion 9a and the upper piece of the first curved portion 8b are separated (divided, separated) in the indoor / outdoor direction at the intermediate portion in the indoor / outdoor direction to become upper groove pieces 9h, 8h on the opening side and the groove bottom side.

[0014] In contrast, the second groove-shaped portion S2 is formed by branching off and curving upward toward the indoor side from the upper gutter pieces 8h, 9h which are separated in the indoor / outdoor direction from the first groove-shaped portion S1, and the second groove-shaped portion S2 is configured such that the second curved portion 8c of the upper connecting portion 8 becomes the outdoor gutter inner piece 8i, the upper gutter inner piece 8j, and the indoor gutter inner piece 8k, and the fourth curved portion 9b of the lower connecting portion 9 becomes the outdoor gutter outer piece 9i, the upper gutter outer piece 9j, and the indoor gutter outer piece 9k.

[0015] A spacer material 10 is provided in the groove-like portion S formed in the joint R thus interlocked, in order to reduce or prevent water from accumulating in the groove-like portion S. The spacer material 10 is formed from a hard elastic resin material such as polypropylene (PP) or polyvinyl chloride (PVC).

[0016] In this embodiment, the spacer material 10 is assembled to the upper connecting portion 8 in a state where it is separated from the lower connecting portion 9 with a gap, and is configured to include a first locking piece 10a that is curved so as to be externally fitted and engaged from above into the second curved portion 8c of the upper connecting portion 8, an extension piece 10b that extends from the outdoor side lower edge portion of the first locking piece 10a across the first groove-shaped portion S1 in the vertical direction, and whose outdoor side tip edge 10d reaches the opening E of the first groove-shaped portion S1 and abuts (or closely faces) the lower groove piece 8g at the opening E portion, and a second locking piece 10c that extends from the tip edge 10d of the extension piece 10b to the groove bottom portion of the first groove-shaped portion S1 and whose tip edge 10e engages with the groove bottom portion. In this case, a tip edge 10f of the first locking piece 10a that fits and locks onto the second curved portion 8c is set so as not to reach a tip edge 8e of the second curved portion 8c. By configuring the spacer material 10 in this manner, the first locking piece 10a and the second locking piece 10c of the spacer material 10 are locked to the upper connecting part 8 in a sandwiched manner from above and below, so that the spacer material 10 is assembled to the upper connecting part 8 in an locked manner, and the spacer material 10 is disposed in the groove-shaped part S, narrowing the space of the groove-shaped part S, so that it is possible to reduce or prevent water from accumulating in the groove-shaped part S. In this case, the tip edge 10d of the extension piece 10b that reaches the opening E of the groove-shaped part S abuts or faces closely to the lower groove piece 8g of the upper connecting part 8 in a state of facing the upper groove piece 9h of the lower connecting part 9 with a gap therebetween, so that it is possible to effectively reduce or prevent water from accumulating in the opening E of the groove-shaped part S. Furthermore, as described above, the vertically adjacent slats 7 are caused to swing relatively in the front-rear direction with the tip edge 8e of the second curved portion of the upper connecting portion 8 abutting against the second corner portion 9d of the lower connecting portion 9, with the abutting portion serving as the swing fulcrum. The contact portion serving as the pivot point is located at the innermost end of the groove of the recessed groove portion S, as shown in FIG. The spacer material 10 is As shown in FIG. 5, the groove-shaped portion S is provided with a groove-shaped opening E extending from the opening E of the groove-shaped portion S to the groove-deep portion, but not reaching the groove-deep end portion. In other words, The upper connecting portion 8 is assembled to the lower connecting portion 9 at abutment between the upper connecting portion 8 and the lower connecting portion 9, that is, in a state where the second curved portion does not reach the tip edge portion 8e. At the same time, it faces the lower connecting portion 9 with a gap therebetween over the entire length from the opening E of the concave groove-like portion S to the innermost portion of the groove. As a result, even if the spacer material 10 is provided, the positional relationship between adjacent slats 7 can be made the same as when the spacer material 10 is not provided.

[0017] The spacer material 10 configured in this manner can also be attached to the upper connecting portion 8 by sliding it in the left-right direction, but the spacer material 10 in this embodiment is designed to be assembled to the slats 7 from the front-to-back direction in either case where the upper and lower adjacent slats 7 are connected by an interlocking connection or where they are not connected.

[0018] First, an example of a mounting method when vertically adjacent slats 7 are not connected to each other by an interlock connection will be described. The spacer material 10 is provided with a groove-like inner fitting portion F having an entrance between the tip edge portion 10f of the first locking piece portion 10a and the tip edge portion 10e of the second locking piece portion 10c. As shown in FIG. 6(A), when the spacer material 10 is turned upside down (upside down) from the position in which it is assembled to the upper connecting portion 8, the tip edge portion 8e of the second curved portion 8c of the upper connecting portion is loosely fitted into the inner fitting portion F. In this inner fitting state, the first locking piece 10 a is fitted over the second curved portion 8c of the upper connecting portion 8 and aligned along the outer surface of the second curved portion 8c, and the portion of the spacer material 10 above the upper connecting portion 8 (for example, the tip edge portion 10d of the extended piece) is displaced so as to wrap around and move downward toward the outdoor side, so that the tip edge portion 10e of the second engaging piece portion of the spacer material 10 abuts (gets caught on, hits) the portion of the first corner portion 8d between the first curved portion 8b and the second curved portion 8c on the second curved portion 8c side. In this state, if the above-mentioned portion (extending piece tip edge portion 10d) is forcibly pushed further downward, the spacer material 10 elastically deforms so that the abutting second locking piece tip edge portion 10e is forced past the first corner portion 8d, whereby the first locking piece portion 10a is externally fitted and locked to the second curved portion 8c from above, and the tip edge portion 10e of the second locking piece portion 10c is locked to the first curved portion 8b from below, assuming an assembly posture in which the spacer material 10 is prevented from coming loose from the front-to-rear directions when assembled relative to the upper connecting portion 8. The upper connecting portion 8 of the slat 7 to which the spacer material 10 is attached and the lower connecting portion 9 of the adjacent slat 7 are slid relatively in the left-right direction, thereby enabling the slats 7 to be interlocked together.

[0019] Next, an example of a mounting method in which vertically adjacent slats 7 are connected to each other by interlocking will be described. In this case, as shown in Figure 7, adjacent slats 7 are swung relatively in the front-to-back direction to an expanded position in which the opening E of the groove-shaped portion S is expanded, and in this expanded position, the second locking piece 10c of the spacer material 10 is placed against the slat surface portion 7a side portion of the first folded portion 8a of the upper connecting portion 8 from above, and the tip edge 10f of the first locking piece 10a is inserted into the expanded opening E of the groove-shaped portion S. In this state, when the extension piece 10b of the spacer material 10 is pressed from the outdoor side to the indoor side, the first locking piece 10a abuts against the third curved portion 9a of the lower connecting portion 9, elastically deforming and entering the groove-shaped portion S, so that the tip edge 10f of the first locking piece abuts against the outer surface of the second curved portion 8c of the upper connecting portion 8, while the tip edge 10e of the second locking piece 10c abuts (gets caught on, bumps into) the second curved portion 8c side portion of the first corner portion 8d between the first curved portion 8b and the second curved portion 8c. In this state, if the extending piece 10b is further forcibly pushed toward the indoor side, the spacer material 10 will have the first locking piece 10a forcibly go over the apex of the second curved portion 8c and engage with it from above, while the tip edge 10e of the second locking piece will elastically deform so as to go over the first corner portion 8d, assuming an assembly posture in which the tip edge 10e of the second locking piece engages with the first curved portion 8b from below, and in this way the spacer material 10 can be assembled to the upper connecting portion 8 in a state in which it is prevented from coming loose from the front-to-rear directions. Furthermore, when assembling the spacer material 10 in an installation method in which the adjacent slats 7 above and below are connected by an interlocking connection, in the existing shutter curtain 3, the adjacent slats 7 can be bent at an angle that allows the spacer material 10 to be installed, for example, in the area above the upper end of the guide rail 2 (above the slat section), so that the spacer material 10 can be installed without having to take care of removing the guide rail 2. However, when installing the spacer material 10 with the guide rail 2 removed, the spacer material 10 can be installed not in the narrow space above the slat section, but with the adjacent slats 7 bent significantly (for example, bent by more than 90 degrees) in the area below the slat section (the entrance / exit area opened and closed by the shutter curtain 3).

[0020] In this way, the spacer material 10 can be assembled to the upper connecting portion 8 whether the upper and lower adjacent slats 7 are not connected to each other by an interlocking connection or are connected.In this case, the spacer material 10 is not provided for the slats 7 that fit within the shutter case 6 when the shutter curtain 3 is in the fully closed position, but it can also be provided for the slats 7 that fit within the shutter case 6 if necessary. In addition, in order to regulate the relative left-right movement between adjacent upper and lower slats 7 connected by an interlock connection, in this embodiment, both left and right ends of the lower connecting portion 9 are crimped after the interlock connection. In this case, as shown in Figure 8, the left-right length of the spacer material 10 is set shorter than the left-right length of the slat 7 so as not to reach the crimped portion 9m. Furthermore, the shutter curtain 3 of this embodiment is configured so that multiple (e.g., four) slats 7 are interlocked together in a factory to form a curtain part P, which is then transported to the site, and the upper and lower edges of the curtain part P are interlocked together on site to form a finished product.In consideration of this interlocking connection on site, the following considerations have been taken into account. In other words, when the interlocking connection is made under controlled conditions at the factory, adjacent slats 7 can be precisely slid in parallel to each other, thereby enabling the interlocking connection to be made without the lower connecting part 9 sliding (not abutting) against the spacer material 10 assembled to the upper connecting part 8, or even if it does slide, the sliding resistance is very small.This allows the interlocking connection to be made in a state where the spacer material 10 assembled to the upper connecting part 8 is prevented from moving inadvertently due to sliding resistance. On the other hand, when interlocking at the site, it is practically difficult to perform the interlocking with high accuracy as in the case of performing the interlocking at the factory, and therefore it is assumed that the spacer material 10 assembled to the upper connecting portion 8 will be interlocked with a large sliding resistance from the lower connecting portion 9, resulting in an unintended sliding movement of the spacer material 10. To avoid this, for the spacer material 10 assembled to the upper connecting portion 8 to be interlocked at the site, both left and right ends of the second locking piece 10c are adhered to the first bent portion 8a of the upper connecting portion 8 with an adhesive (not shown), thereby restricting the movement of the spacer material 10 during the interlocking. Although it is efficient and easy to perform the adhesion of the spacer material 10 to the slats 7 at the factory, it may be performed on site as necessary. Incidentally, when the spacer material 10 is bonded using an adhesive, in the case of bonding in a scattered (dot) manner, the bonding positions are not limited to both the left and right ends, and one or more appropriate positions (locations) can be selected and bonded as necessary, and the spacer material 10 may be bonded in a wide state or even over its entire length, rather than in a scattered manner. Also, the spacer material 10 is not limited to being bonded to the slats 7 that are interlocked at the site, and may be bonded to the slats 7 that are interlocked at a factory.

[0021] In this embodiment configured as described above, the architectural shutter device 1 is equipped with a shutter curtain 3 that opens and closes the building opening by being guided by guide rails 2 provided on both the left and right sides of the opening, and the shutter curtain 3 is configured by connecting adjacent slats 7 to each other so that they can swing freely relative to each other in the front-to-back direction through an interlocking connection that allows the lower connecting portion 9 and the upper connecting portion 8 of adjacent slats 7 to move relatively left and right in the left-to-right direction. In this embodiment, the interlocking connection is of a loose fit type in which a groove-shaped portion S with an opening E on the outdoor side is provided between the upper connecting portion 8 and the lower connecting portion 9, and a spacer material 10 for reducing or preventing water from accumulating in the groove-shaped portion S is attached to the upper connecting portion 8 in a loose fit state with a gap in the lower connecting portion 9.

[0022] As a result, even if the spacer material 10 is provided in the recessed groove portion S to reduce and prevent water from accumulating in the recessed groove portion S of the interlocking connection, the spacer material 10 is attached to the upper connecting portion 8 in a loose fit state with a gap between them and the lower connecting portion 9, so that even if the vertically adjacent slats 7 swing relatively forward and backward when winding or unwinding the shutter curtain 3, the spacer material 10 is not subjected to a sliding action, and therefore wear of the spacer material 10 due to the sliding action can be prevented, which greatly contributes to improving the durability of the spacer material 10. Furthermore, even if the spacer material 10 is attached to the upper connecting portion 8 in advance when performing the interlocking connection in a factory, etc., no sliding resistance is generated by the spacer material 10, and the interlocking can be performed smoothly and it is possible to prevent the spacer material 10 from being displaced due to sliding resistance.

[0023] Furthermore, in this interlocking connection, the tip edge portion (tip edge portion 8e of second curved portion 8c) of the upper connecting portion 8 abuts against a support portion (second corner portion 9d) formed on the tip side of the lower connecting portion 9, and the connection swings relatively in the front-rear direction with the abutment portion as the swing fulcrum, but the spacer material 10 is provided in the concave groove portion S without reaching the abutment portion. As a result, the spacer material 10 does not affect the positional relationship between vertically adjacent slats 7, and therefore, even when attaching the spacer material 10 to an existing shutter device, there is no need to reset the fitting state, which contributes to improved workability.

[0024] Furthermore, in this embodiment, the spacer material 10 is configured to be assembled to the upper connecting portion 8. In this case, the first locking piece portion 10a formed on the spacer material 10 is configured to be assembled by being externally fitted from above into the second curved portion 8c formed on the upper connecting portion 8, thereby making it easy to assemble the spacer material 10 to the upper connecting portion 8.

[0025] Furthermore, since the spacer material 10 is configured to be supported by the upper connecting portion 8 in a state in which the upper connecting portion 8 is clamped from above and below, the spacer material 10 can be reliably assembled to the upper connecting portion 8 without inadvertent misalignment.

[0026] Furthermore, even when the slats 7 are interlocked with each other, the spacer material 10 is configured so that it can be assembled to the upper connecting portion 8 from the expanded opening E portion of the groove-shaped portion S in an expanded position in which adjacent slats 7 swing relatively in the forward and backward directions to expand the opening E portion of the groove-shaped portion S. Therefore, even in the case of an existing shutter device 1, the spacer material 10 can be easily assembled to the upper connecting portion 8 while still in the interlocked state, greatly improving work efficiency.

[0027] In addition, when the slats 7 are not interlocked with each other, the spacer material 10 is configured to be assembled to the upper connecting portion 8 by moving the spacer material 10 along the outer surface of the second curved portion 8c of the upper connecting portion 8 in a state in which it fits externally to the upper connecting portion 8, so that assembly to the upper connecting portion 8 even in a state in which the slats 7 are not interlocked can also be easily performed.

[0028] Furthermore, when the spacer material 10 is assembled to the upper connecting portion 8, the spacer material 10 and the upper connecting portion 8 are configured so that the spacer material 10 will overstep during the assembly process in which the spacer material 10 is assembled to the upper connecting portion 8 (in this embodiment, when the spacer material 10 is assembled to the upper connecting portion 8 in a state in which it is not interlocked, the tip edge 10e of the second locking piece of the spacer material 10 will overstep the first corner portion 8d of the upper connecting portion 8, and when the spacer material 10 is assembled to the upper connecting portion 8 in a state in which it is interlocked, the tip edge 10f of the first locking piece of the spacer material 10 will overstep the apex of the second curved portion 8c of the upper connecting portion 8, and the tip edge 10e of the second locking piece of the spacer material 10 will overstep the first corner portion 8d of the upper connecting portion 8). Therefore, the spacer material 10 can be reliably assembled to the upper connecting portion 8 in a state in which it is prevented from coming off.

[0029] Furthermore, the spacer material 10 assembled to the upper connecting portion 8 has the extending piece tip edge portion 10d located at the opening E of the groove-shaped portion S abutting or closely opposing the lower groove piece portion 8g of the upper connecting portion 8 with a gap remaining between them, thereby effectively reducing and preventing water from accumulating at the opening E of the groove-shaped portion S.

[0030] The spacer material 10 can also be glued to the upper connecting portion 8 to be assembled. For example, in the case of slats 7 which are interlocked with each other at the site where the shutter device 1 is erected, by gluing the spacer material 10 to the upper connecting portion 8 in advance, it is possible to reliably prevent the spacer material 10 from shifting out of position even when the slats are interlocked at the site.

[0031] Next, second to fourth embodiments of the present invention will be described with reference to Figures 9 to 15. The second to fourth embodiments are the same as the first embodiment except for the spacer material, and the same reference numerals are used for these same elements, and the description thereof will be omitted. First, the spacer material 11 of the second embodiment will be described with reference to Figs. 9 and 10. The spacer material 11, like the spacer material 10 of the first embodiment, is assembled to the upper connecting portion 8 in a state of being spaced apart from the lower connecting portion 9 with a gap therebetween. The spacer material 11 comprises a first locking piece 11a curved to be externally fitted and locked from above to the second curved portion 8c of the upper connecting portion 8, and a first extending piece 11b extending from the outdoor side lower end edge of the first locking piece 11a in a state of vertically crossing the first concave groove-shaped portion S1, the lower end edge of which abuts against (or faces closely to) the indoor / outdoor direction intermediate portion of the lower groove piece 8g. The second extending piece 11c is formed by branching downward from the vertical middle part (lower than the central part in this embodiment) of the first extending piece 11b located at the branching part between the first groove-shaped part S1 and the second groove-shaped part S2 toward the outdoor side, and the tip edge part 11e on the outdoor side reaches the opening part E of the first groove-shaped part S1 and then bends downward to abut (or faces closely) the lower groove piece 8g at the opening part E, and the second locking piece 11d is configured to reach from the lower end edge part of the first extending piece 11b to the groove bottom part of the first groove-shaped part S1 and to lock the curved tip edge part 11f to the groove bottom part. In this case, the tip edge part 11g of the first locking piece 11a that is externally fitted and locked to the second curved part 8c is set not to reach the tip edge part 8e of the second curved part 8c. By configuring the spacer material 11 in this manner, the first locking piece 11a and the tip edge 11f (second locking piece 11d) of the spacer material 11 are engaged with the upper connecting part 8 in a sandwiched manner from above and below, and as in the first embodiment, the spacer material 11 is disposed in the groove-shaped part S to narrow the space of the groove-shaped part S, thereby reducing or preventing water from accumulating in the groove-shaped part S. In this case, the tip edge 11e of the second extending piece 11c that reaches the opening E of the groove-shaped part S abuts or faces closely to the lower groove piece 8g of the upper connecting part 8 in a state of facing the upper groove piece 9h of the lower connecting part 9 with a gap therebetween, thereby effectively reducing or preventing water from accumulating in the opening E of the groove-shaped part S. Furthermore, like the spacer material 10 of the first embodiment, the spacer material 11 of the second embodiment is attached to the upper connecting portion 8 without reaching the abutment portion between the upper connecting portion 8 and the lower connecting portion 9, which are connected by an interlocking connection so that they can freely swing relative to each other, i.e., the tip edge portion 8e of the second curved portion.As a result, even if the spacer material 11 is provided, the positional relationship between adjacent slats 7 is configured to be the same as when the spacer material 11 is not provided.

[0032] Furthermore, in the second embodiment configured in this manner, the same effects as those of the first embodiment described above are achieved, and wear of the spacer material 11 can be prevented, which contributes greatly to improving the durability of the spacer material 11, and even when the spacer material 11 is attached to an existing shutter device, there is no need to reset the fitting state, which contributes to improving workability.

[0033] Next, a spacer material 12 according to a third embodiment will be described with reference to Figures 11 and 12. The spacer material 12, like the spacer materials 10 and 11 according to the first and second embodiments, is attached to the upper connecting portion 8 in a state separated from the lower connecting portion 9 with a gap therebetween. The spacer material 12 has a first locking piece 12a curved so as to be externally fitted and locked from above onto the second curved portion 8c of the upper connecting portion 8, and a first locking piece 12a extending from the outdoor side lower end edge of the first locking piece 12a in a state crossing the first groove-shaped portion S1 in the vertical direction, and a tip edge 12e on the outdoor side reaching an opening E of the first groove-shaped portion S1 and then extending downward. The extension piece 12b is bent in a vertical direction and abuts (or faces closely) the lower groove piece 8g at the opening E, the second locking piece 12c is branched from the vertical middle part (lower than the center part in this embodiment) of the extension piece 12b located at the branch part of the first groove-shaped part S1 and the second groove-shaped part S2 toward the indoor side and reaches the groove bottom part of the first groove-shaped part S1, and the tip edge part is locked to the groove bottom part, and the leg piece 12d is branched from the indoor / outdoor middle part of the second locking piece 12c downward and the lower end edge part abuts the groove bottom part of the lower groove piece 8g. In this case, the tip edge part 12f of the first locking piece 12a that is externally fitted and locked to the second curved part 8c is set so as not to reach the tip edge part 8e of the second curved part 8c. By configuring the spacer material 12 in this manner, the first locking piece 12a and the second locking piece 12c of the spacer material 12 are engaged with the upper connecting part 8 in a sandwiched manner from above and below, and the spacer material 12 is assembled to the upper connecting part 8 in an engaged manner, and similarly to the first and second embodiments, the spacer material 12 is disposed in the groove-shaped part S, narrowing the space of the groove-shaped part S, thereby reducing or preventing water from accumulating in the groove-shaped part S. In this case, the tip edge 12e of the extension piece 12b reaching the opening E of the groove-shaped part S abuts or faces closely to the lower groove piece 8g of the upper connecting part 8 in a state of facing the upper groove piece 9h of the lower connecting part 9 with a gap therebetween, thereby effectively reducing or preventing water from accumulating in the opening E of the groove-shaped part S. Furthermore, like the spacer materials 10 and 11 of the first and second embodiments, the spacer material 12 of the third embodiment is attached to the upper connecting portion 8 without reaching the abutment portion between the upper connecting portion 8 and the lower connecting portion 9, which are connected by an interlocking connection so that they can freely swing relative to each other, i.e., the tip edge portion 8e of the second curved portion.As a result, even if the spacer material 12 is provided, the positional relationship between adjacent slats 7 is configured to be the same as when the spacer material 12 is not provided.

[0034] Furthermore, in the third embodiment configured in this manner, the same effects as those of the first and second embodiments described above are achieved, making it possible to prevent wear on the spacer material 12 and greatly contributing to improving the durability of the spacer material 12, and even when the spacer material 12 is attached to an existing shutter device, there is no need to reset the fitting state, thereby contributing to improved workability. In the second and third embodiments described above, as in the first embodiment, the method of attaching the spacer materials 11, 12 to the upper connecting portion 8 can of course be performed by sliding them in the left-right direction, but they are also configured to be able to be assembled to the slats 7 from the front-to-rear direction in either case where adjacent upper and lower slats 7 are connected by an interlocking connection or where they are not connected.

[0035] 13 to 15, the spacer material 13 of the fourth embodiment is assembled to the lower connecting part 9 in a state of being separated from the upper connecting part 8 with a gap therebetween, and is configured to include a locking piece 13a that fits into and locks with the fourth curved part 9b from below along the inner surface of the fourth curved part 9b of the lower connecting part 9, and an extension piece 13b that extends from the outdoor side lower end edge of the locking piece 13a along the inner surface of the third curved part 9a, and whose thick tip edge 13c on the outdoor side reaches the opening E of the first groove-shaped part S1. In this case, the locking piece 13a is shaped to fit into the inner surface of the fourth curved part 9b of the lower connecting part 9, and a fifth corner part 13d and a sixth corner part 13e that fit into the third corner part 9e and the fourth corner part 9f on both the outdoor and inner sides of the fourth curved part 9b are formed. Further, the tip edge 13f of the locking piece 13a is set so as not to reach the second corner portion 9d of the lower connecting portion 9. By configuring the spacer material 13 in this manner, the locking piece portion 13a of the spacer material 13 is fitted and locked into the fourth curved portion 9b of the lower connecting portion 9, so that the spacer material 13 is assembled to the lower connecting portion 9 in an locked manner, and similarly to the first to third embodiments, the spacer material 13 is disposed in the groove-shaped portion S, narrowing the space of the groove-shaped portion S, so that it is possible to reduce or prevent water from accumulating in the groove-shaped portion S. In this case, the tip edge portion 13c of the extension piece portion 13b that reaches the opening E of the groove-shaped portion S abuts against the upper groove piece portion 9h of the lower connecting portion 9 in a state of facing the lower groove piece portion 8g of the upper connecting portion 8 with a gap therebetween, so that it is possible to effectively reduce or prevent water from accumulating in the opening E of the groove-shaped portion S. Furthermore, in the fourth embodiment, the spacer material 13 is also assembled to the lower connecting portion 9 without reaching the abutment portion between the upper connecting portion 8 and the lower connecting portion 9, which are connected by an interlocking connection so that they can freely swing relative to each other, i.e., the second corner portion 9d.As a result, even when the spacer material 13 is provided, the positional relationship between adjacent slats 7 is configured to be the same as when the spacer material 13 is not provided.

[0036] The spacer material 13 of the fourth embodiment configured in this manner can be attached to the lower connecting portion 9 by sliding it in the left-right direction, but it is also designed to be attached to the slat 7 from the front-to-back direction when adjacent slats 7 above and below are not connected by an interlocking connection, and an example of the attachment method in this case will be described below. 15, the locking piece 13a of the spacer material 13 is inserted between the second bent portion 9c of the lower connecting portion 9 and the outdoor gutter outer piece portion 9i, and the fifth corner portion 13d and the sixth corner portion 13e on both the indoor and outdoor sides of the locking piece 13a are brought into contact with the inner surfaces of the outdoor gutter outer piece portion 9i and the upper gutter outer piece portion 9j of the lower connecting portion 9, respectively. When the extending piece portion 13b of the spacer material 13 is displaced upward on the outdoor side from this state, the tip edge portion 13f of the locking piece 13a of the spacer material 13 comes into contact with the portion of the fourth corner portion 9f of the lower connecting portion 9 on the indoor gutter outer piece portion 9k side, and the fifth corner portion 13d of the spacer material 13 comes into contact with the portion of the third corner portion 9e of the lower connecting portion 9 on the outdoor gutter outer piece portion 9i side. In this state, if the extending piece portion 13b of the spacer material 13 is further forcibly pushed upward toward the outdoor side, the spacer material 13 elastically deforms, and the fifth corner portion 13d and sixth corner portion 13e of the spacer material 13 are forcibly fitted into the third corner portion 9e and fourth corner portion 9f of the lower connecting portion 9, thereby assuming an assembly posture in which the locking piece portion 13a of the spacer material 13 is internally fitted and locked into the fourth curved portion 9b of the lower connecting portion 9.In this way, the spacer material 13 can be assembled to the lower connecting portion 9 in a state in which it is prevented from coming loose in the forward / backward directions.

[0037] In the fourth embodiment thus configured, the spacer material 13 is assembled to the lower connecting portion 9 in a loose fit state with a gap in the upper connecting portion 8, but even if the spacer material 13 is assembled to the lower connecting portion 9 in this manner, the same action and effect as those of the first to third embodiments in which the spacer material 13 is assembled to the upper connecting portion 8 can be achieved, and wear of the spacer material 13 can be prevented, which contributes greatly to improving the durability of the spacer material 13, and even when the spacer material 13 is attached to an existing shutter device, there is no need to reset the fitting state, which contributes to improving workability. Also, in the fourth embodiment, the locking piece portion 13a formed on the spacer material 13 is assembled by fitting it into the fourth curved portion 9b formed on the lower connecting portion 9 from below, which makes it easy to assemble the spacer material 13 to the lower connecting portion 9. In the second to fourth embodiments, the spacer material 13 can be adhered in the same manner as in the first embodiment; however, in this case, in the second and third embodiments, the spacer materials 11 and 12 are adhered to the upper connecting portion 8, and in the fourth embodiment, the spacer material 13 is adhered to the lower connecting portion 9. [Industrial Applicability]

[0038] The present invention can be utilized in a shutter curtain of a shutter device for a building that is installed to open and close an opening. [Explanation of symbols]

[0039] 1 Shutter device 2 Guide rails 3. Shutter Curtain 7 Slats 8 Upper connection part 8c Second curved part 8e Second curved part tip edge 9 Lower connection part 9b Fourth curved part 9d Second corner 10 Spacer material 10d Extending piece tip edge 11 Spacer material 12 Spacer material 13 Spacer material S Concave groove part E Opening of the groove

Claims

1. A shutter curtain that opens and closes a building opening is guided by guide rails provided on both the left and right sides of the opening, and is configured by connecting adjacent slats so that they can swing freely relative to each other in the front-to-rear direction by interlocking the lower and upper connecting parts of adjacent slats vertically, allowing the lower and upper connecting parts to move relatively left and right in a shutter device for a building. The interlocking connection is a loose-fitting connection in which a groove-like portion with an opening on the outdoor side is provided between the upper connecting portion and the lower connecting portion, A spacer material is provided in the groove-like portion so as to extend from the opening of the groove-like portion to a deep portion of the groove, This shutter curtain in a shutter device for buildings is characterized in that the spacer material is attached to either the upper connecting part or the lower connecting part, and faces the other connecting part with a gap over the entire length from the opening part to the back part of the groove.

2. The interlock connection is formed by a connection in which the tip edge of the upper connecting part abuts against a support part formed on the tip side of the lower connecting part, and the connection swings relatively in the front-rear direction with the contact part as a swing fulcrum, at the back end of the groove of the concave groove-shaped part; A shutter curtain in a shutter device for a building as described in claim 1, characterized in that the spacer material is set to a length that extends to the back portion of the groove but does not reach the abutment portion at the back end of the groove of the concave groove-shaped portion.

3. The interlocking connection is a connection in which the upper connecting portion fits inside the lower connecting portion, A shutter curtain in a shutter device for a building as described in claim 1 or 2, characterized in that the spacer material is assembled to the upper connecting part in a loose-fitting state with a gap in the lower connecting part, or is assembled to the lower connecting part in a loose-fitting state with a gap in the upper connecting part.

4. A shutter curtain in a shutter device for a building as described in claim 3, characterized in that when the spacer material is assembled to the upper connecting portion, it is assembled by fitting it externally from above into the curved portion formed in the upper connecting portion, and when the spacer material is assembled to the lower connecting portion, it is assembled by fitting it internally from below into the curved portion formed in the lower connecting portion.

5. A shutter curtain in a shutter device for a building as described in claim 3 or 4, characterized in that when the spacer material is assembled to the upper connecting portion, the spacer material is supported in a state in which it clamps the upper connecting portion from above and below.

6. A shutter curtain in a shutter device for a building as described in any one of claims 3 to 5, characterized in that the spacer material is attached to the upper connecting portion by inserting the spacer material into the expanded opening portion of the groove-shaped portion in an expanded position when adjacent slats swing relatively in the forward and backward directions to expand the opening portion of the groove-shaped portion, and then assembling the spacer material to the upper connecting portion.

7. A shutter curtain in a shutter device for a building as described in any one of claims 3 to 5, characterized in that the spacer material is attached to the upper connecting portion by moving the spacer material, which is fitted onto the upper connecting portion when adjacent slats are not interlocked, along the outer surface of the curved portion of the upper connecting portion.

8. 8. The shutter curtain in the shutter device for buildings according to claim 3, wherein the spacer material is attached to the upper connecting portion by forcibly passing over the upper connecting portion.

9. A shutter curtain in a shutter device for a building as described in any one of claims 3 to 8, characterized in that the spacer material is assembled to the upper connecting portion so that the outdoor side end edge portion located at the opening portion of the groove-shaped portion of the spacer material abuts or faces closely to the upper connecting portion with a gap between them.

10. 10. The shutter curtain in the shutter device for a building according to claim 3, wherein the spacer material is adhered to the upper connecting portion or the lower connecting portion to be assembled.

11. A shutter device for a building, in which a shutter curtain that opens and closes a building opening is guided by guide rails provided on both the left and right sides of the opening is constructed by connecting adjacent slats together so that they can swing freely relative to each other in the front-to-rear direction using an interlock connection that allows the lower connecting parts and upper connecting parts of adjacent slats to move relatively left and right in the left-to-right direction, The interlocking connection is a loose-fitting connection in which a groove-like portion with an opening on the outdoor side is provided between the upper connecting portion and the lower connecting portion, When a spacer material for reducing or preventing water from accumulating in the groove-like portion is provided in the groove-like portion with a gap therebetween, The interlock connection is a connection in which the upper connection part is fitted inside the lower connection part, The spacer material is assembled to the upper connecting portion in a loose fit state with a gap in the lower connecting portion, A shutter curtain in a shutter device for a building, characterized in that the outdoor side end edge portion located at the opening portion of the groove-shaped portion of the spacer material abuts or closely faces the upper connecting portion while leaving a gap between the lower connecting portion.

Images