JPH04108986A - Shutter curtain for building - Google Patents

Abstract

PURPOSE:To eliminate interlock linkage and provide a shutter of low noise by pressing an engagement side into an engagement groove part for engagement and a serial of connection, performing winding work around a winding drum, and deviating the slat surface part of a sub slat in the slat surface part of a main slat. CONSTITUTION:The lower engagement groove part 5b of a sub slat 5 is pressed into the upper engagement groove part 4a of a main slat 4 for engagement until an engagement piece 5c engages with an engagement piece 4c, and the upper engagement side 5a of the sub slat 5 is pressed into the lower engagement groove part 4b in the same way as the above for engagement and a serial of connection. As a result, in a shutter curtain 1 formed in serial, the slat, surface 5d of the sub slat 5 is deviated to indoor side with regard to the slat surface 4d of the main slat 4. Namely, it becomes a recessed shape on outdoor side. Moreover, the sub slat 5 is elastically-deformed for curving, thus being wound around the winding drum 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a shutter curtain for buildings installed in buildings such as houses and buildings.

[Prior art and problems to be solved by the invention] Generally,
This type of shutter curtain for buildings is wound around a winding drum placed above the opening, and is guided by guide rails formed on both the left and right sides of the opening to open and close in the vertical direction. It has become common to do something like this. By the way, the shutter curtain used for this needs to be formed so that it can change its shape between a straight position along the guide rail and a spiral position when wound around the winding drum. The formed slats were interlocked with each other to form a shutter curtain. However, in this case, since there is inevitably a gap and play in the interlock joint, there is a problem that noise is generated when opening/closing or when exposed to wind during closing.

Therefore, attempts have been made to eliminate the gap in the interlock joint, but these methods have the problem of complicating the structure of the interlock joint, and are therefore impractical.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a building shutter curtain that can eliminate these drawbacks. In a shutter curtain for a building that is wrapped and guided by a guide rail to open and close an opening, the shutter curtain consists of a main slat made of a rigid material and a sub slat made of an elastic material. A fitting groove is formed on both side edges of the main slat that protrudes toward the indoor side and is open on the outdoor side, and in these fitting grooves, a fitting groove is formed on both side edges of the secondary slat that protrudes toward the indoor side. The formed fitting sides are press-fitted and connected in a series so that the secondary slats are elastically deformed to be wound around the winding drum in a spiral shape, and the slat surface portions of the adjacent main slats are In contrast, this is characterized in that the slat surface portion of the sub-slat is biased toward the side where the winding drum is located.

With this configuration, the present invention eliminates the interlock coupling and makes it possible to obtain a low-noise shutter.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawing, reference numeral 1 denotes a shutter curtain for the normal winding of a building shutter, and the shutter curtain 1 is wound around a winding drum 2 installed above the opening, and provided on the left and right sides of the opening. It is configured to open and close up and down while being guided by a guide rail 3.

The shutter curtain 1 includes a main slat 4 made of a rigid material such as metal such as steel or aluminum, or synthetic resin used in existing shutter curtains, and an elastic material such as spring steel or synthetic resin. It is constructed by alternately connecting sub-slats 5 made of a material having .

In other words, in this embodiment, the main slat 4 is formed into a substantially U-shape facing indoors, and both legs are further bent back toward the outdoors to fit into hairpin grooves with the outdoor side open. Fitting grooves 4a, 4b (For convenience, the upper one is called the upper fitting groove 4a, and the lower one is called the lower fitting groove 4b.
) is formed. This fitting groove 4a
, 4b are provided with engagement holes 4 at intervals of pitch A.
C is bored, but the length of the engagement hole 4c in the left-right direction (the length in the pitch A direction) is set to B.

On the other hand, the secondary slat 5 is bent into a substantially U-shape, and its fitting sides 5a and 5b (for convenience, the upper side is referred to as the upper fitting side 5a, and the lower side is referred to as the lower side). Fitting side 5b
An engaging piece 5c is formed by stamping so that its tip is on the crotch side and protrudes toward the opposite side of the face-to-face contacting side.

The pitch of the engagement pieces 5c is set to be approximately half (B/2) of the length of the engagement hole 4c.

Then, the shutter curtain 1 connects the lower fitting side 5b of the sub slat 5 to the upper fitting groove 4a of the main slat 4 with the engaging piece 5.
c until it engages with the engagement hole 4c, and at the same time push and fit the upper 0IrI fitting side 5a of the sub-slat 5 into the lower fitting groove 4b in the same way to form a continuous shape. However, the shutter curtain l formed in a series in this way has a slat surface 5d of the sub-slat 5 that is biased toward the indoor side with respect to the slat surface 4d of the main slat 4, that is, it is concave toward the indoor side. Furthermore, the secondary slat 5 is elastically deformed and curved to be wound around the winding drum 2.

In the embodiment of the present invention configured as described above, the opening and closing of the opening is achieved by raising and lowering the shutter curtain 1 guided by the guide rail 3, but the shutter curtain 1 is moved by a conventional interlock connection. Unlike the case where rigid slats are connected together in a bendable manner, there is no gap between the slats, and as a result, there is no noise caused by the slats colliding with each other during opening/closing operations or when exposed to wind. The occurrence of noise can be reliably avoided, and a quiet, low-noise building shutter can be obtained. Furthermore, since there is no gap between the connecting parts of the slats, it has the advantage of being excellent in fire prevention, smoke prevention, and sound insulation.

Moreover, in this case, when winding on the winding drum 2,
Since the elastic and flexible secondary slats 1-5 are curved instead of the rigid main slats 4, winding can be carried out in a spiral shape without any problems, similar to those with conventional interlock connections. can.

Furthermore, when the shutter curtain 1 is wound around the winding drum 2, the sub-slats 5 are elastically deformed into a curved shape as described above. Although the slat surface portion 5d protrudes toward the outside diameter side, since the slat surface portion 5d is biased toward the indoor side with respect to the slat surface portion 4d of the main slat 4, the protrusion due to the curvature is offset by the biased portion. ,
Therefore, when winding onto the winding drum 2, it is possible to effectively prevent the problem of the sub-slats 5 interfering with and damaging the slats superimposed on the outer diameter side, and the appearance will not be damaged for a long time. .

Furthermore, in this case, since the connecting ends of each slat 4.5 are not exposed to the outside, it not only has a favorable appearance, but also has the advantage of being very convenient in terms of crime prevention and rust prevention.

In addition, in this case, the engagement piece 5c is fitted into the engagement hole 4C to prevent lateral displacement, so that the slats do not shift from side to side unlike in conventional interlocking joints. There is also the advantage that there is no need to attach end fittings.

It should be noted that the present invention is of course not limited to the above-mentioned embodiment, and may include a structure in which the fitting groove portion and the fitting side protrude in the horizontal direction, as in the second embodiment shown in FIG. As in the third embodiment shown in FIG. 7, the fitting groove portion and the fitting side may be inclined so that they are lower on the indoor side.

Further, the means for preventing the engagement groove from being pulled out is not limited to one in which the engagement piece is fitted into the engagement hole, and may be a general stopping means such as a rivet.

Furthermore, various patterns are applied to the slat surface of the main slat 4, as shown in the pattern diagrams shown in FIG. 8 (here, the solid line represents the main slat and the broken line represents the sub-slat); These patterns may be applied to the side of the sub-slat 5, or these various main and sub-slats may be combined.

Incidentally, in each of the above embodiments, the width of each main and sub slat (
The width in the guide rail direction (not in the direction between opposing guide rails) can be arbitrarily set as necessary.

[Operations and Effects] In summary, since the present invention is constructed as described above, the shutter curtain has main slats made of a rigid material and sub-slats made of an elastic material. By connecting the slats in a series, it is possible to eliminate the interlock joints that were required in the past, and there is no gap between adjacent slats. It is possible to avoid the generation of unpleasant noise caused by rubbing or collision, and the noise can be significantly reduced, making it quieter. Furthermore, since there is no gap between adjacent slats, it can greatly contribute to improving fire prevention, smoke prevention, and sound insulation.

Furthermore, the connection between the main and sub-slats is achieved by pushing and fitting the fitting side of the sub-slat side into the fitting groove formed on the main slat side, so the connecting end is not exposed outdoors. Of course, it is desirable in terms of appearance, but it also has the advantage of being highly convenient in terms of crime prevention and rust prevention.

Furthermore, when the shutter curtain is wound around the winding drum, the slat surface of the sub-slat is curved. Since it is set to be biased towards the side where the winding drum is with respect to the surface part, the protrusion due to the curvature is offset by the bias, and therefore, when winding on the winding drum, the sub slats have an outer diameter It is possible to effectively prevent the problem of interference and damage to the slats that overlap on the sides, and the appearance will not be damaged for a long time.

[Brief explanation of drawings]

The drawings show an embodiment of the building shutter curtain according to the present invention, in which Fig. 1 is a schematic front view of the building shutter, Fig. 2 X and Y are cross-sectional views and plan views of the main slats, Figure 3
Figures X and Y are side views showing the shutter curtain in a straight state and a rolled-up state, respectively;
6 and 7 are sectional views of shutter curtains showing second and third embodiments, respectively, and FIGS. 8A to 8D are sectional views of shutter curtains showing other embodiments, respectively. In the figure, 1 is a shutter curtain, 2 is a winding drum, 3
4 is a guide rail, 4 is a main slat, 4a and 4b are fitting grooves, 4d is a slat surface, 5 is a sub-slat, 5a and 5b are fitting sides, and 5d is a slat surface. Patent applicant Sanwa Shutter Industry Co., Ltd.

Claims (1)

[Claims] In a building shutter curtain that is wound around a winding drum and whose opening is opened and closed by being guided by a guide rail, the shutter curtain is made of a main slat made of a rigid material and an elastic material. Using the secondary slats to be formed, fitting grooves protruding toward the indoor side and open on the outdoor side are formed on both side edges of the main slat, and in these fitting grooves, fitting grooves are formed on both side edges of the secondary slat that are open on the indoor side. The fitting sides formed to protrude toward the main slats are pressed together and connected in a series so that the sub-slats are wound spirally around the winding drum by elastic deformation. A shutter curtain for a building, characterized in that the slat surface of the sub-slat is biased toward the side where the winding drum is located with respect to the slat surface of the slat.