JP2002295144A - Shutter for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure smoothly raising and lowering of a shutter curtain without damaging a guide rail and avoiding an excessive increase in the diameter of the roll during winding in a structure for preventing the falling off of the curtain of building shutter which is compared so as to guide to raise or lower the curtain being a plurality of slats continuously sewed through interlock portions by guide rails erected at the right and left. SOLUTION: Projected stripes are formed in a vertical direction at the indoor side of an interior wall face of a guide rail, and locking recess portions located on the same vertical line and locked to the projected stripes are formed at the indoor side both ends of the interlock portions of each slat constituting the shutter curtain.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an architectural shutter capable of preventing a shutter curtain of an architectural shutter from being bent by a strong wind such as a typhoon and falling out of a guide rail.

[0002]

2. Description of the Related Art Conventionally, architectural shutter curtains in which a plurality of slats are connected vertically are lifted and lowered to open and close a building opening with both ends inserted into an opening of a guide rail having a substantially U-shaped cross section. However, in the case of a strong wind such as a typhoon, the shirt curtain is usually closed so that the window glass installed inside is not damaged by flying objects or the like. However, when a strong wind pressure is applied in this closed state, the shutter curtain is supported at both ends inserted into the guide rails and is largely bent in the interior and exterior directions toward the center thereof. The amount of flexure will be regulated to some extent by contact with the glass surface, but the flexure in the outdoor direction will increase without being regulated, resulting in the end of the shutter curtain coming out of the guide rail. Not only does it lose its closed purpose, it also damages the shutter curtain itself. In order to prevent such a situation, various measures have been proposed for preventing the shutter curtain from coming off the guide rail. For example, hook-shaped metal fittings are provided at both ends of a shutter constituting a shutter curtain, and the metal fittings are locked by locking pieces provided in a guide rail to prevent the shutter from coming off, or a convex shape is formed at the end of the slat. There is an apparatus in which a cut-and-raised portion is formed and the cut-and-raised portion is locked to a locking piece of a guide rail.

[0003]

However, the above-mentioned prior art not only requires time and effort to attach the metal fittings, but also has a metal fitting provided at the end of the slat when the rolled-up shutter curtain is extended. There is a risk that the lifting and lowering operation may be hindered by being caught on the upper end, and the bracket may rub against the inner wall of the guide rail during the ascent and descent, causing scratches and abnormal noise. That is, the winding diameter becomes large. In addition, since the shutter curtain is damaged or the winding diameter becomes large at the time of winding due to the effect of the cut and raised convex portion, the shutter case becomes unnecessarily large, and the present invention is intended to solve this problem. There is a problem to do.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve these problems, and comprises a plurality of slats which can be bent freely through interlocking portions projecting from upper and lower edges thereof. In an architectural shutter configured to be able to ascend and descend by inserting both right and left ends of a shutter curtain formed by continuous binding into a guide rail, a convex streak is formed vertically on the inner wall surface side of the guide rail, and the shutter is formed. The interlocking portion of each slat constituting the curtain has a locking recess which is positioned substantially on the same vertical line and which can be locked to the ridge on both sides of the room, so that the shutter curtain is curved toward the outdoor side. When the outer surface of the shutter curtain abuts against the guide rail, the locking recess is locked to the ridge so that both ends of the shutter curtain are prevented from coming off from the guide rail. It is characterized in that the.

[0005] With this construction, even when the shutter curtain of the architectural shutter bends due to a strong wind such as a typhoon, both ends of the shutter curtain are effectively prevented from falling out of the guide rails. Since the shutter curtain does not form a protrusion, the shutter curtain does not slide on the guide rail when ascending and descending, so that there is no danger of generating scratches or abnormal noise. .

Further, the locking recess is provided with a movement restricting piece for preventing each slat from moving in the left-right direction.

[0007] With this configuration, the locking concave portion also has a function of preventing the respective slats constituting the shirt tar- getter from moving in the left-right direction and being displaced.

[0008] Further, the ridge is also used as a pocket having an airtight piece mounting groove.

With this configuration, the material cost can be reduced by providing a part of the pocket portion with the function of a ridge.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment according to the present invention will be described with reference to the drawings. FIG. 1 is a front view of an architectural shutter, in which a shutter curtain 1 having an upper end fastened to a winding shaft (not shown) extending upward is fitted into and supported by guide rails 3 and 3 at both ends. In this state, the opening is opened and closed by ascending and descending by forward and reverse rotation of the winding shaft. As shown in FIG. 2, the guide rail 3 is formed to have a substantially U-shaped cross section in which one end side of the indoor side rib 3a and one end side of the outdoor side rib 3b which are spaced apart from each other are connected by a bottom rib 3c and the other end side is opened. Pockets 3e, 3e into which the airtight pieces 3f, 3g are inserted are respectively formed at the opening portions of the inner wall surfaces of the ribs 3a, 3b so as to face each other and are formed continuously in the longitudinal direction of the guide rail 3. Further, on the inner wall surface of the indoor side rib 3a, a ridge 3d is provided at the center slightly near the opening to form an outdoor side rib 3b.
It is formed continuously in the longitudinal direction toward the side. The protruding height of the ridge 3d is set to be substantially the same as the height of the pocket 3e.

As shown in FIG. 3 (C), the shutter curtain 1 has a plurality of curled interlock portions 2a and 2b having a curved surface at the center and having opposite upper and lower edges. It is composed of slats 2, 2, ...
The upper edge side interlock portion 2a of each slat 2 is shown in FIG.
As shown in (A), the slat 2 is cut out from both ends by a predetermined dimension L. 4 is a locking recess,
The locking concave portion 4 is formed on the surface (the indoor side surface) on the side opposed to the ridge 3d near the both ends of the lower edge side interlock portion 2b of the slat 2, as shown in FIG. Is cut out to a size M larger than the width m of the ridge 3d. In addition, the interval between the locking recesses 4 and 4 formed to face left and right is
Notched upper edge side interlock portion 2a of slat 2
Are set to dimensions slightly larger than the longitudinal dimension. The upper recessed interlocking portion 2a of the slat 2 thus formed is slidably inserted into the lower interlocking portion 2b of the upper slat 2 from its end side and connected in a vertically bendable manner so that the locking concave portion 4 is provided with a shutter. Both ends of the curtain 1 are located on the same vertical line.

Reference numeral 5 denotes a movement restricting piece for preventing the vertically adjacent slats 2 and 2 from moving in the longitudinal direction, and the movement restricting piece 5 is, as shown in FIG. The portion 2b is formed by pressing from the front side in the vicinity of the inner end of each of the locking recesses 4 and 4 facing left and right so as to be crushed in an inclined manner so as to be lowered toward the locking recess 4. Thus, both ends of the upper edge interlock portion 2a inserted into the lower edge interlock portion 2b are restricted by the movement restricting pieces 5 from moving in the longitudinal direction.

When the movement restricting piece 5 is formed at the center end of the slat of the locking recess 4 in this manner, the load due to the wind pressure on the shirt curtain 1 is reduced, and the end of the shutter curtain 1 is guided by the guide rail. 3 when returning to the original state by moving in the bottom direction,
Is guided in the releasing direction by the inclined portion, and can be smoothly returned without being caught.

In the present embodiment, a description has been given of the case where the locking recesses 4 are provided with the movement restricting pieces 5 for preventing the longitudinal movement of the slats 2. However, the movement restricting pieces 5 are not limited to this. The end faces of the two interlock portions 2a and 2b may be provided by caulking.

As shown in FIG. 4B, the movement restricting piece 5 has two vertical slits formed in the lower edge interlock portion 2b, and the portion 5 'between the slits is crushed from the front side by press working. In this case, the locking recess 4 and the movement restricting piece 5 can be formed at the same time, so that the working efficiency can be improved.

FIG. 6 is different from the above-described one in that the cutout states of the interlock portions 2a and 2b of the slat 2 for forming the locking recess 4 are different.
That is, in the case described above, the upper edge side interlock portion 2a
6A is cut out from each end of the slat 2 by a predetermined dimension (L), whereas the one shown in FIG.
M), the slat 2 is notched M lengths toward the center in the longitudinal direction, while the lower edge side interlock portion 2b is provided with a slit 6 at a position (LM) from the end thereof. Is formed. The upper edge side interlock portion 2 of the plurality of slats 2 thus formed
a and the lower edge side interlock portion 2b are fitted and inserted from the end side thereof to form a continuous
As shown in FIG. 6B, the slit 6 is caulked to form the locking concave portion 4 and the movement restricting piece 5, and in this case, the lower edge side is located at both ends of the interlock portion of the shirt curtain 1. When the interlock 2b is fitted to the upper edge interlock 2a of the adjacent slat 2 in a double fitting state, and the shirt-curtain 1 is bent by the wind pressure, the locking concave portion 4 becomes the convex portion of the guide rail 3. Locking to the ridges 3d prevents the shirt turtle curtain 1 from coming off. At this time, both ends (LM portions) of the interlock portion that bears the retaining force have a double fitting structure. Therefore, it has sufficient strength, and the action of preventing the shirt tar curtain 1 from falling off can be ensured.

The shutter curtain 1 constructed as described above is normally raised and lowered with its end side being fitted into the guide rail 3 as shown in FIG. 7 (A). When the shutter curtain 1 bends and curves toward the outdoor side, first, both ends of the outer surface side of the shutter curtain 1 abut against the airtight pieces 3g inserted into the pockets 3e of the outdoor side ribs 3b. Are bent toward the outdoor side, and both ends 1a of the guide rail 3
Abuts on the inner wall surface of the indoor side rib 3a. When the amount of deflection further increases, both end portions 1a of the shirt curtain 1 are connected to the guide rails 3 as shown in FIG.
However, the locking concave portion 4 is locked by the ridge 3d, and further movement is restricted, and as a result, the end 1a of the shirt turtle curtain 1 comes off from the guide rail 3. Can be prevented.

In the case where the pockets 3e, 3e are formed at the front ends of the indoor side ribs 3a and the outdoor side ribs 3b of the guide rail 3 as in this embodiment, FIG. As shown, even when the shirt turtle curtain 1 bends and curves to the indoor side, the locking recess 4 locks into the pocket 3e formed in the indoor side rib 3a, thereby preventing the shirt turtle curtain 1 from falling out of the guide rail 3. Therefore, it is possible to cope with any bending of the shirt curtain 1 in the indoor and outdoor directions, which is convenient. In this case, it goes without saying that the notch width of the locking concave portion 4 is set to be slightly larger than the width of the pocket portion 3e on the indoor side.

FIG. 8 shows another embodiment in which the ridge 3d is formed. FIG. 8A shows a case where the pocket 3e on the indoor side of the guide rail 3 is also used as the ridge 3d. (B) is the indoor side rib 3a of the guide rail 3.
Is formed in a step shape to form the convex stripe 3d.

[0020]

According to the present invention, since the locking concave portions are not provided at both ends of the slat, the slat does not project from the slat, so that the guide rail is not damaged and the shutter curtain can be smoothly moved. In addition to ensuring a proper vertical movement, even when the shutter curtain is wound up, no slats are scratched and the winding diameter is not increased more than necessary. Further, the locking recess is simple in processing and can be applied to slats of various shapes. Furthermore, when the movement restricting piece is provided in the locking concave portion, the forming of the locking concave portion and the prevention of the lateral movement of the slat can be performed at the same time, and the number of working steps can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of an architectural shutter.

FIG. 2 is an enlarged sectional view of a guide rail.

FIG. 3A is a front view of a main part of a shutter curtain. (B) It is a bottom view same as the above. (C) It is a right view of the above.

FIG. 4 is an enlarged perspective view of a main part showing a locking concave portion and a movement restricting piece.

FIG. 5 is an enlarged perspective view of a main part showing an end of a shutter curtain.

FIG. 6 (A) is a slat processing explanatory view showing another embodiment of a locking concave portion. (B) It is a perspective view of the slat which shows the locking recessed part same as the above.

FIG. 7 is an operation explanatory view showing a state in which the shutter curtain is prevented from coming off.

FIG. 8A is a sectional view of a guide rail showing another embodiment of the ridge. (B) It is a guide rail sectional view showing other embodiments of a ridge.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shutter curtain 2 Slat 2a Upper edge side interlock part 2b Lower edge side interlock part 3 Guide rail 3d Ridge 4 Locking concave part 5 Movement restriction piece 6 Slit

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hirohiro Kajiya 2-1-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Sanwa Shutter Industry Co., Ltd.

Claims (3)

[Claims] An architectural structure in which a left and right end of a shutter curtain, in which a plurality of slats are bent and connected via interlock portions projecting from upper and lower edges thereof, is inserted into guide rails so as to be movable up and down. In the shutter for use, while forming a ridge in the vertical direction on the inner wall surface indoor side of the guide rail, the slats constituting the shutter curtain are located on substantially the same vertical straight line on both sides of the interlock portion both ends indoor side. When the shutter curtain is curved toward the outdoor side, lacking the locking recess that can be locked to the ridge,
An architectural shutter characterized in that the locking recess is locked to a ridge so that both ends of the shutter curtain are prevented from coming off from the guide rail. 2. The architectural shirt according to claim 1, wherein said locking recess is provided with a movement restricting piece for preventing each slat from moving in the left-right direction. 3. The architectural shutter according to claim 1, wherein the ridge is also used as a pocket having an airtight piece mounting groove.