JP2023000513A - Building shutter device - Google Patents

Abstract

To improve the ability of a shutter curtain 3 to prevent it from falling off from a guide rail 2 when the shutter curtain receives strong wind and is bent.SOLUTION: In order to prevent falling-off by forming second recess fitting shaped parts 5g in each of slats 5 forming a shutter curtain 3 and making second engagement parts 5i formed in the second recess fitting shaped parts 5g engage with second engagement reception parts 2h provided on a guide rail 2 side, reinforcing members 7 are provided in the second fitting recesses 5g to improve engagement of the second engagement parts 5i with the second engagement reception parts 2h.SELECTED DRAWING: Figure 7

Description

The present invention relates to the technical field of building shutter devices provided for opening and closing openings such as doorways of buildings such as buildings and houses.

In general, in order to open and close an opening such as a doorway of a building such as a building or a residence, guide rails are provided on the left and right sides of the opening, a shutter curtain that is guided up and down by the guide rail to open and close the opening, and the shutter curtain. Building shutter devices may be erected comprising a winding body positioned above an opening for winding a shutter curtain in such a shutter device that the shutter curtain in the closed state is exposed to typhoons and concentrated The shutter curtain may be greatly bent by strong wind generated in bad weather such as heavy rain.
Therefore, in order to prevent the shutter curtain that has been bent by the strong wind from slipping out of the guide rail, an attempt has been made to provide a pull-out prevention function between the shutter curtain and the guide rail.
As such a retaining mechanism, a recessed fitting portion is formed in the laterally outer edge portion of the slat constituting the shutter curtain, and the laterally outer edge portion of the recessed fitting portion is used as a locking portion. It is proposed that when the shutter curtain is bent indoors or outdoors due to a strong wind, the locking part locks the shutter curtain with a locking receiving part provided on the guide rail to prevent the shutter curtain from coming off. (See Patent Document 1, for example).

Japanese Unexamined Patent Application Publication No. 2004-60307

The retaining mechanism as described above is effective in the case of a lightweight shutter device such as a window shutter and is widely used. There is a tendency for weather conditions to worsen, such as torrential rains becoming more intense. Insufficient strength is expected, and therefore there is a need to take measures to increase the strength beyond the current level, and this is the problem to be solved by the present invention.

The present invention has been made in view of the actual situation as described above, with the aim of solving these problems. A guide rail that guides the left and right edges of the shutter curtain up and down, and a winding body that is provided above the opening and winds the shutter curtain. In a building shutter device configured by locking coupling, a recessed fitting portion is formed at a left-right direction outer edge portion of the slat, and a left-right direction outer edge portion of the recessed fitting portion is a locking portion. When the shutter curtain bends in the front-rear direction due to a strong wind, the shutter curtain is prevented from coming off from the guide rail by engaging the engaging portion with the engaging portion provided on the guide rail. In constructing the shutter device for a building, the slat is provided with a reinforcing member for reinforcing the engaging portion.
According to the second aspect of the invention, the slat includes upper and lower interlock coupling portions biased to one side in the front-rear direction, and slat abdomens disposed between the upper and lower interlock coupling portions and biased to the other side in the front-rear direction. The recessed fitting portion is formed in the slat abdomen, and the reinforcing member is positioned closer to the left-right outer edge than the recessed fitting portion and fits inside one side surface of the slat abdomen in the front-rear direction. A building shutter device according to claim 1, characterized in that it is mounted.
According to the third aspect of the invention, the reinforcing member has a left-right outer edge portion extending outward from the left-right outer edge portion of the slat, so that when the shutter curtain is displaced in the left-right direction, the rail of the guide rail is supported. 3. The building shutter device according to claim 1 or 2, wherein the cushioning material is in contact with the bottom of the groove.
According to the fourth aspect of the invention, the recessed fitting portion is formed by bending the slat abdomen toward one side in the front-rear direction in a recessed manner, by notching it to form a gap, or by folding it in a recessed manner. 4. The building shutter device according to any one of claims 1 to 3, wherein the stop portion side portion is formed by notching so as to form a gap.
According to the fifth aspect of the invention, the locking portion is formed at the notched end edge portion by forming the gap in the recessed fitting portion, and the reinforcing member has the locking portion at the left-right direction inner edge portion. 5. The building shutter device according to any one of claims 2 to 4, wherein the shutter device is constructed so as to be located at a position or extend to the gap side beyond the engaging portion.
According to the invention of claim 6, when the reinforcing member is provided with an extending portion extending toward the gap, the laterally inner edge portion of the extending portion extends laterally toward one side in the front-rear direction. 6. The building shutter device according to claim 5, wherein the shutter device is inclined outward.

According to the invention of claim 1, the recessed fitting portion formed in the left-right direction outer edge portion of the slat prevents the shutter curtain from coming off from the guide rail when the shutter curtain is bent by the wind pressure. In the above-mentioned slat, a reinforcing member for reinforcing the engaging portion is provided on the slat, in which the engaging portion is engaged with the engaging portion provided on the guide rail. is provided, the locking portion can be reinforced.
According to the second aspect of the invention, in the slat abdomen having the recessed portion formed therein, the reinforcing member is fitted in the slat abdomen, resulting in a compact state in which the reinforcing member does not protrude from the slat. can be installed with
According to the invention of claim 3, the reinforcing member can also be used as a cushioning material that abuts against the rail groove of the guide rail when the shutter curtain is displaced in the left-right direction, thereby reducing the number of members. .
According to the invention of claim 4, the recessed fitting portion is bent in a recessed manner toward one side in the front-rear direction of the slat abdomen, is notched to form a gap, or is bent in a recessed manner. It can be formed by notching so that the engagement portion side portion of the other end forms a gap, so that the degree of freedom in forming the recessed fitting portion is increased.
According to the invention of claim 5, when the recessed fitting portion is formed with a gap, the laterally inner edge portion of the reinforcing member is positioned at the locking portion position or the locking portion. Since it is provided so as to extend beyond the stop portion toward the gap side, the reinforcement of the locking portion becomes more reliable.
According to the invention of claim 6, when the laterally inner edge portion of the reinforcing member has an extension extending beyond the engaging portion, the laterally inner edge portion of the extending portion extends forward and backward. As a result of being inclined outward in the left-right direction toward one side, the engagement with the engagement receiving portion becomes more reliable, and the function of preventing the shutter curtain from slipping off from the guide rail can be enhanced.

It is a front view of a shutter device. (A) and (B) are longitudinal side views of forward winding specification and reverse winding specification shutter devices. (A), (B), and (C) are a front view, a plan view, and a rear view of a forward winding specification slat. (A), (B), and (C) are a front view, a plan view, and a rear view of a reverse winding slat. (A) and (B) are vertical cross-sectional side views of essential parts of forward winding specification and reverse winding specification slats. (A) and (B) are cross-sectional plan views of essential parts of forward winding specification and reverse winding specification slats. 4A, 4B, and 4C are cross-sectional plan views of essential parts showing a normal state, a positive pressure state, and a negative pressure state of the normal shutter curtain; FIG. (A), (B), and (C) are vertical cross-sectional views of main parts showing a normal state, a positive pressure state, and a negative pressure state of the normal shutter curtain. 4A, 4B, and 4C are cross-sectional plan views of main parts showing a normal state, a positive pressure state, and a negative pressure state of a reverse-wound shutter curtain; FIG. (A), (B), and (C) are vertical cross-sectional views of a main part showing a normal state, a positive pressure state, and a negative pressure state of a reverse-wound shutter curtain. (A) and (B) are vertical cross-sectional views of main parts showing the mounting state of the reinforcing member of the second and third embodiments.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a shutter device for a window provided in a sash window, which is an example of an opening E of a building. , a shutter curtain 3 that is guided up and down by the guide rail 2 to open and close the opening E; The shutter curtain 3 is formed in a series by interlocking Y the upper and lower adjoining slats 5 which are elongated in the left-right direction. be.
In the figure, 6 is a rail for the sash. Further, although the embodiment of the present invention is a manual type without an electric opening/closing device, it is needless to say that an electric type opening/closing device can be used in the same way. The winding body 4 is housed in a shutter case 4a.

In this case, as shown in FIG. 2A, the shutter device 1 is arranged such that the winding body 4 is biased toward the indoor (indoor) side with respect to the guide rail 2 (opening E). 2(B), there is a normal winding specification in which the curtain 3 is wound around the winding body 4 so that the outdoor side 3a of the curtain 3 is on the spiral outer peripheral side, and the winding body 4 is conversely wound on the guide rail 2 as shown in FIG. 2(B). On the other hand, there is a reverse-winding specification in which the shutter curtain 3 is arranged in a biased state toward the outdoor (outdoor) side and wound around the winding body 4 so that the indoor side surface 3b of the shutter curtain 3 is on the spiral outer peripheral side. Specifications can be adopted.

Further, the slat 5 for constituting the shutter curtain 3 includes upper and lower interlock coupling portions 5a and 5b that are biased to one side in the front-rear direction with respect to the shutter core X of the shutter curtain 3 moving up and down on the guide rail 2, and A slat abdomen 5c disposed between the upper and lower interlock coupling portions 5a and 5b and biased toward the other side in the front-rear direction with respect to the shutter core X in a recessed manner, these upper and lower interlock coupling portions 5a and 5b and the slat abdomen 5c. It is configured to have upper and lower connecting portions 5d and 5e that connect each other.
When the shutter device 1 is of forward winding specification, the slat 5 is arranged such that the upper and lower interlock joints 5a and 5b are on the indoor side (one side in the front-rear direction) with respect to the shutter core X, as shown in FIG. 8(A). In this case, the protruding surface of the slat abdomen 5c becomes the outdoor side surface 3a of the shutter curtain 3 and is concave. The surface on the fitting side becomes the indoor side surface 3b, and the indoor side surface 3b becomes the spiral inner side surface and is wound around the winding body 4. - 特許庁

On the other hand, when the shutter device 1 is of the reverse winding specification, the slat 5 is arranged such that the upper and lower interlock coupling portions 5a and 5b are on the outdoor side (one side in the front-rear direction) with respect to the shutter core X, as shown in FIG. 10(A). , and the slat abdomen 5c is biased toward the indoor side (the other side in the front-rear direction). , the surface on the projecting side becomes the indoor side surface 3b, and the outdoor side surface 3a becomes the spiral inner side surface, and is wound around the winding body 4. - 特許庁
In some shutter devices, in the case of a reverse winding specification, the surface of the projecting side of the slat abdomen 5c faces the outside, and the surface of the projecting side faces the inside of the spiral. The state in which the curtain is wound around the winding body is appropriately set as necessary.
In this way, when the shutter device 1 has the forward winding specification and the reverse winding specification, for example, the meaning of "one side in the forward and backward direction" in the present invention means the indoor side for the forward winding specification, and the outdoor side for the reverse winding specification. However, the present invention can be expressed as a common thing regardless of the forward winding specification or the reverse winding specification, so it is described as such in the claims, and "indoor and outdoor" is described in the embodiments. shall be distinguished as

Furthermore, the joint structure of the interlock joint Y by the upper and lower interlock joint portions 5a and 5b adopts the same joint structure (the specific shape is not the same) for both the normal winding specification and the reverse winding specification. This bonding structure is further described in .
Both of the upper and lower interlock coupling portions 5a and 5b are curved in an arc shape with an open tip edge. A difference exists in the present embodiment.
On the other hand, in both the forward winding specification and the reverse winding specification, the upper interlock coupling portion 5a of the slat 5 extends from the upper end portion of the slat abdomen 5c to the upper end edge through the upper connecting portion 5d from the indoor side. While the lower interlock coupling portion 5b is curved downward on the outdoor side, the lower interlock coupling portion 5b extends from the outdoor side to the lower edge while passing through the lower connecting portion 5e from the lower end portion of the slat abdomen 5c. The end is curved upward on the indoor side, and the structure is common to both the normal winding specification and the reverse winding specification.
Incidentally, the upper and lower adjacent slats 5 of this embodiment are configured such that their relative movement in the left-right direction is regulated by crimping and fixing the interlock joint Y portions of both left-right direction edge portions. Since such a configuration is a well-known technique, further explanation is omitted.

The interlock joint Y when the vertically adjacent slats 5 configured in this manner are connected is such that the lower interlock joint 5b of the upper slat 5 is connected to the upper interlock joint 5a of the lower slat 5. The upper and lower slats 5 are connected to each other so that they can swing in the indoor and outdoor directions in a spiral manner (covering) from the outdoor side. On the outdoor side surface 3a of , when the rainwater attached to the outdoor side surface 3a runs down, the rainwater flows from the outdoor side surface 3a of the lower interlock portion 5b of the upper slat 5 to the upper interlock joint of the lower slat 5 5a (or the upper connecting part 5d) is configured to directly run down to the outdoor side 3a, and the rainwater running down is assumed to run down the indoor side 3b of the shutter curtain 3. Consideration is given so that it does not flow down from the interlock portion 5b and accumulate (stay) in the interlock connection Y portion. It has the same configuration regardless of
In this way, the structures of the shutter curtain 3 of the forward winding specification and the reverse winding specification have been described, but since the present invention can be similarly implemented in either specification, the forward winding specification will be described first. After that, the reverse winding specification will be explained, but the reverse winding specification will be kept simple in order to avoid duplication.

First, in the forward-winding shutter device 1, first and second recessed fitting portions 5f and 5g are formed at both lateral end edges of the slat 5. The first recessed fitting portion 5f Notch portions 5fa and 5fb, which are cut out to a predetermined depth in a state where the upper and lower interlock joint portions 5a and 5b have a predetermined width in the left-right direction, are interlock-connected Y, so that they are concavely fitted toward the outdoor side. The left-right direction outer edge of the first recessed fitting portion 5f constitutes a first locking portion 5h which is a notched edge. Incidentally, the first recessed fitting portion 5f is formed at the interlock joint Y portion in which the upper and lower interlock joint portions 5a and 5b are laminated in two layers in the form of an arc of slat material (steel material). It is resistant to corrosion, and there is no demand for increased strength beyond the current level.

On the other hand, since the second recessed fitting portion (corresponding to the "recessed fitting portion" of the present invention) 5g is formed in the slat abdomen 5c, it is required to increase the strength beyond the present. However, the second concave-fitting portion 5g is formed by bending (curving) the slat abdomen 5c toward the indoor side in a concave-fitting manner, and at the laterally outer portion of the bent bottom plate portion 5j in the concave-fitting manner. is cut out (cut) to form a gap (gap, gap) S that penetrates indoors and outdoors. Second, the bottom plate portion 5j is left in the left-right direction inner portion, and the left-right direction outer edge portion is a notched edge portion in which the slat abdomen 5c arranged on the left-right direction outer side is notched. A locking portion 5i is formed.
A second engaging portion 5i which is the notched edge portion of the slat abdomen 5c, and a notched edge portion located inside in the left-right direction with a gap S with respect to the second engaging portion 5i. The bottom plate portion 5j of the second recessed fitting portion 5g is separated from the bottom plate portion 5j in the indoor/outdoor direction (front-rear direction) with a gap S in the left-right direction.
In the first recessed fitting portion 5f and the second recessed fitting portion 5g configured in this way, the first locking portion 5h, which is the outer edge in the left-right direction, is wider in the left-right direction than the second locking portion 5i. While positioned on the outer side, the first recessed fitting portion 5f is set to be positioned further outward in the lateral direction than the second recessed fitting portion 5g in a state in which both the left and right inner edge portions are inclined. .

Further, a reinforcing member 7 is attached to the slat abdomen 5c at a laterally outer portion of the second recessed fitting portion 5g, and the reinforcing member 7 is made of a synthetic resin material such as ABS, POM, nylon, or the like. The slat abdomen 5c is attached to the slat abdomen 5c so as to be in contact with the indoor side surface of the slat abdomen 5c at the laterally outer side of the second engaging portion 5i via fasteners 7a such as rivets and screws. is attached and fixed to the recessed side surface of the
The laterally outer edge portion 7b of the reinforcing member 7 extends laterally outward beyond the laterally outer edge 5k of the slat 5. When the shutter curtain 3 fitted inside the rail groove (guide groove) 2a to be guided up and down by the guide rail 2 is displaced laterally (positional deviation), the edge portion 7b does not contact the groove bottom 2b of the rail groove 2a. It is also a cushioning material having a function of buffering the lateral outer edge 5k of the slat 5 from directly abutting (colliding) with the groove bottom 2b. It is possible to reduce the contact sound (noise, noise, collision sound) generated when the curtain 3 is displaced in the left-right direction and contacts the groove bottom 2b, and the left-right outer edge 5k of the slat 5 and the groove bottom 2b. damage can be avoided.

Further, the left-right direction inner edge portion 7c of the reinforcing member 7 provided in this manner is configured to be positioned at the same position in the left-right direction as the second locking portion 5i. The plate material 5c is used as an outer layer, and the laterally inner edge portion 7c of the reinforcing member serves as an inner layer covered by the slat abdomen 5c. It has become. In this case, the reinforcing member 7 is thicker than the plate thickness of the slat 5, so that strong reinforcement can be achieved. 5c is arranged in a solid state (in a buried state), and consideration is given so that an excellent reinforcing function can be exhibited.
On the other hand, the reinforcement member 7 is arranged so that the first locking portion 5h positioned laterally outwardly of the second locking portion 5i is positioned at the laterally inner and outer edge portions of the first locking portion 5h. It is located between 7c and 7b.

The shutter curtain 3 formed using the slats 5 configured in this manner is loosely fitted into the rail groove 2a of the guide rail 2. The indoor and outdoor rail side portions 2c of the rail groove 2a, In 2d, first and second mounting pockets 2e and 2f for mounting the mohair 8 positioned at the groove opening end portion of the rail groove 2a are formed in projecting shapes, respectively. Edge portions 2g and 2h on the inner side (outside in the lateral direction) of 2e and 2f serve as first and second locking receiving portions 2g and 2h, and when the shutter curtain 3 bends in the indoor and outdoor directions. , the first locking portion 5h is locked to the first locking receiving portion 2g, and the second locking portion 5i is locked to the second locking receiving portion 2h, so that the guide rail 2 of the shutter curtain 3 Each is configured to be prevented from coming off by a separate latch. As a result, when the guide rail 2 receives the load of bending of the shutter curtain 3 due to strong winds, the slat 5 and the opening edge of the guide rail 3 will not be aligned as in the case of adopting the conventional lever principle. Since the contact position of the slat 5 does not function as a point of action, not only is the expansion of the guide rail 2 in the indoor/outdoor direction suppressed, but even if the guide rail 2 expands, the fitting formed on the slat 5 does not. The joint portions 5f and 5g are prevented from being disengaged due to movement following the expansion of the guide rail 2, thereby avoiding disengagement. For this reason, the guide rail 2 is expanded under the load of bending of the shutter curtain 3 due to the strong wind, as in the case of adopting the locking structure using the lever of the conventional locking mechanism. This solves the problem that the retaining lock is disengaged and the portion of the slat that abuts against the guide rail 2 is deformed, contributing to an increase in strength.
Incidentally, in this case, the first locking receiving portion 2g is configured as an end edge of an extending portion 2i extending laterally outward from the end edge portion on the inner side of the groove of the first attachment pocket 2e. Needless to say, it may be used as the groove inner edge of the first attachment pocket 2e as well as the second locking receiving portion 2h.

Specifically, the shutter curtain 3 normally has its left and right edges loosely fitted into the rail grooves 2a of the guide rails 2 with the central portion in the indoor/outdoor direction positioned substantially at the shutter core X. In this normal closed state, the shutter curtain 3 is separated from the first and second attachment pockets 2e and 2f in the indoor/outdoor direction and in the horizontal direction of the reinforcing member 7. The outer edge portion 7b is also separated from the groove bottom portion 2b. In this case, the first and second locking portions 5h and 5i formed on the slat 5 are located on the inner side of the groove (left-right direction outer side) relative to the first and second locking receiving portions 2g and 2h. is configured to be located in

When the shutter curtain 3 in the closed state is deflected indoors by receiving a positive pressure wind directed indoors, the left-right inner side (center side) of the shutter curtain 3 is displaced indoors. Then, the left-right outer edge 5k is displaced to the outside and becomes an inclined posture, and bending deformation occurs on the side where the upper and lower interlock coupling portions 5a and 5b approach the first locking receiving portion 2g. The lateral outer edge portion 5k of the slat 5 is deformed to move inward in the lateral direction. When this flexural deformation increases, the first engagement receiving portion 2g enters the first recessed fitting portion 5f, and finally the first engagement portion 5h moves outward in the left-right direction with respect to the first engagement receiving portion 2g. Further flexural deformation is regulated by locking (abutting) the shutter curtain 3 toward the guide rail 2, thereby preventing the shutter curtain 3 from slipping off from the guide rail 2. As shown in FIG.

On the other hand, when the shutter curtain 3 is deflected to the outside by receiving a negative pressure wind directed to the outside in the opposite direction, the left-right inner side (center side) of the shutter curtain 3 faces the outside. As a result, the left-right outer edge 5k is displaced toward the indoor side and assumes an inclined posture, resulting in bending deformation of the side where the slat abdomen 5b approaches the second locking receiving portion 2h. The deformation is such that the outer edge portion 5k moves inward in the left-right direction in the inclined position. When this flexural deformation increases, the second locking receiving portion 2h enters the second recessed fitting portion 5g, and finally the second locking portion 5i is locked to the second locking receiving portion 2h from the outside in the left-right direction. Further bending deformation is regulated by (abutting), thereby preventing the shutter curtain 3 from coming off from the guide rail 2 .

In this way, when the shutter curtain 3 receives a negative pressure and bends toward the outside, the second locking portion 5i provided on the slat abdomen 5c and the second locking receiving portion 2h provided on the guide rail 2 on the outdoor side will In this case, the second locking portion 5i is the outer layer, and the inner end of the reinforcement member 7 in the left-right direction. As a result of being reinforced with a two-layer structure in which the edge portion 7c is an inner layer, the second locking receiving portion 2h is locked only by the conventional second locking portion 5i to provide support for retaining. Although it is constructed so as to be stronger than the case, it is needless to say that a reinforcing member may be separately provided in order to reinforce the second locking portion 5i.
Incidentally, the left-right direction inner edge portions 5m and 5n of the first and second locking portions 5h and 5i are inclined surfaces that expand outward in the front-rear direction toward the inner side in the left-right direction. When the received and bent shutter curtain 3 returns to its original posture, the first and second locking receiving portions 2g and 2h are hooked on the first and second recessed fitting portions 5f and 5g to return to its original posture. Consideration is given to avoid impairing the smoothness of the return.

In the present embodiment configured as described above, in the fully closed closed state of the normal shutter curtain 3, the shutter curtain 3 receives a positive pressure due to the strong wind directed toward the indoor side, and bends toward the indoor side. 7 and 8, the first locking portion 5h provided on the indoor side of the slat 5 is locked to the first locking receiving portion 2g on the indoor side provided on the guide rail 2. When the shutter curtain 3 is prevented from coming off from the guide rail 2, and conversely, when it receives a negative pressure due to a strong wind directed to the outdoor side and bends to the outdoor side, the second locking receiver provided on the outdoor side provided on the guide rail 2. A second locking portion 5i provided on the indoor side of the slat 5 is locked to the portion 2h, thereby preventing the shutter curtain 3 from slipping off from the guide rail 2. As shown in FIG.

In this case, the second engaging portion 5i formed on the slat abdomen 5c is reinforced by the reinforcing member 7 provided on the slat 5, thereby increasing the strength.
Specifically, the second engaging portion 5i is the laterally outer end of the second recessed fitting portion 5f provided in the slat abdomen 5c arranged between the upper and lower interlock coupling portions 5a and 5b of the slat 5. Since the reinforcing member 7 is formed on the edge portion and fitted inside one side surface of the slat abdomen 5c in the front-rear direction, it can be installed in a compact state without protruding from the slat 5. As shown in FIG.
In addition, the reinforcement member 7 has a left-right outer edge portion 7b that extends further outward than a left-right outer edge portion 5k of the slat 5, so that when the shutter curtain 3 is displaced in the left-right direction, the guide rail 2 will not move. It has a function as a cushioning material that abuts against the groove bottom 2b, and as a result, the reinforcing member 7 can also be used as a cushioning material, so that the number of parts can be reduced.

Moreover, in this device, the second concave fitting portion 5g is formed by bending the slat abdomen 5c toward the indoor side in a concave manner and cutting out a portion on the side of the second locking portion 5i (outward in the left-right direction). Since it is formed so as to form the gap S, the second locking portion 5i becomes the cutout edge portion, and the locking to the second locking receiving portion 2h is not the cutout edge portion. to be certain.
Incidentally, the second recessed fitting portion 5g formed in the slat abdomen 5c is formed by cutting out the entire bottom plate portion 5j without leaving the bottom plate portion 5j. Of course, it may be formed by bending.

In this case, since the left-right direction inner edge portion 7c of the reinforcing member 7 is located at the second locking portion 5i position, the second locking receiving portion 2h is locked to the second locking portion 5i. In this case, the second locking portion 5i is the first layer on the front side, and the left-right direction inner edge portion 7c of the reinforcing member 7 is the second layer on the inner side. By reinforcing the engaging portion 5i, the strength can be reliably increased, and the performance of preventing the shutter curtain 3 from coming off from the guide rail 2 can be improved, and the wind pressure resistance performance can be improved.

Next, the case of the reverse-winding shutter device 1 will be described.
As shown in FIGS. 9 and 10, when a positive pressure is applied, the second locking portion 5i formed in the second fitting portion 5g arranged on the indoor side is pushed out of the guide rail 2. When a negative pressure is applied, the first locking portion 5h formed in the first fitting portion 5f arranged on the outdoor side moves to the guide rail. 2, the shutter curtain 3 is prevented from coming off by being locked to the second locking receiving portion 2h of the shutter device 2, and the locking relationship of the shutter curtain 3 is reversed from the forward-winding shutter device 1. .

That is, when the reverse-wound shutter curtain 3 receives a positive pressure, the second locking portion 5i provided on the indoor side of the slat 5 engages with the first locking receiving portion 2g on the indoor side provided on the guide rail 2. As a result, the shutter curtain 3 is prevented from slipping off from the guide rail 2, and when the negative pressure caused by the strong wind directed to the outside causes the shutter curtain 3 to bend toward the outside, the second step provided on the guide rail 2 will prevent the shutter curtain from falling off. The first locking portion 5h provided on the outdoor side of the slat 5 is locked to the second locking receiving portion 2h, thereby preventing the shutter curtain 3 from slipping off from the guide rail 2. As shown in FIG.
In this case, the second locking portion 5i formed on the slat abdomen 5c engages with the locking receiving portion 2g or 2h on the side of the guide rail 2 when subjected to positive pressure, thereby exerting a retaining function. However, as in the case of the normal winding specification, the reinforcing member 7 provided on the slat abdomen 5c acts to reinforce the slat body 5c, thereby reliably increasing the strength.

The present invention is, of course, not limited to the above-described embodiment, and the reinforcing member 7 of the above-described embodiment has a left-right direction inner edge portion 7c extending from the slat 5 as shown in FIG. Although it is set to be located at the same position as the second locking portion 5i, it is not limited to this, and if it reinforces the second locking portion 5i, it is arranged at the same position as the second locking portion 5i. It does not necessarily have to be one, it may be in a slightly recessed state, or conversely, as in the second embodiment shown in FIG. It may have an extending portion 7d extending to the S side, and the second locking portion 5i can be reinforced in this way as well.
Further, in the case where the extension 7d is formed as in the third embodiment shown in FIG. In the case of a configuration that is inclined outward, that is, if the one shown in the figure is a normal winding specification, it is configured to be inclined outward in the horizontal direction toward the indoor side in the indoor/outdoor direction (one side in the front-rear direction). The locking position when locked to the stop receiving portion 2g is guided to be deep, that is, the locking position is on the inner fitting side of the second fitting portion 5g (first fitting portion 5f side). By doing so, the engagement on the side of the engagement receiving portion becomes more reliable, and it is possible to further improve the retaining strength. Needless to say, in the case of the reverse winding specification, this configuration is opposite to that in the case of the forward winding specification in the indoor/outdoor direction.

INDUSTRIAL APPLICABILITY The present invention can be used as a building shutter device provided to open and close an opening such as an entrance of a building such as a building or a residence.

REFERENCE SIGNS LIST 1 shutter device 2 guide rail 2a rail groove 2g first locking receiving portion 2h second locking receiving portion 3 shutter curtain 5 slat 5a upper interlock coupling portion 5b lower interlock coupling portion 5c slat abdomen 5f first concave fitting shape Part 5g Second recessed fitting part 5h First locking part 5i Second locking part 7 Reinforcement member X Shutter core Y Interlock connection

Claims (6)

A shutter curtain that opens and closes to separate the front and back of the opening, a guide rail that guides the left and right edges of the shutter curtain up and down, and a winding body that is provided above the opening and winds the shutter curtain. prepared,
In the shutter device for a building, wherein the shutter curtain is constructed by interlocking slats that are vertically adjacent to each other,
A recessed fitting portion is formed in the left-right direction outer edge portion of the slat, and the left-right direction outer edge portion of the recessed fitting portion is used as a locking portion,
When the shutter curtain is bent back and forth due to strong wind, the shutter curtain is prevented from coming off from the guide rail by the locking portion being locked to the locking receiving portion provided on the guide rail. In doing so,
A building shutter device, wherein the slat is provided with a reinforcing member for reinforcing the locking portion. The slat includes upper and lower interlock coupling portions biased to one side in the front-rear direction, and a slat abdomen disposed between the upper and lower interlock coupling portions and biased to the other side in the front-rear direction,
The concave fitting portion is formed in the slat abdomen,
2. The building shutter according to claim 1, wherein the reinforcing member is positioned closer to the left-right outer edge than the recessed portion and is attached to one side surface of the slat abdomen in the front-rear direction. Device. The reinforcing member has a laterally outer edge portion extending outward from the laterally outer edge portion of the slat, and is a cushioning material that abuts against the rail groove bottom portion of the guide rail when the shutter curtain is displaced in the lateral direction. The building shutter device according to claim 1 or 2, characterized in that: The recessed fitting part is formed by bending the slat abdomen toward one side in the front-rear direction into a recessed fitting shape, by notching the slat to form a gap, or by bending the recessed part so that the engaging part side part of the recessed part is in the gap. 4. The building shutter device according to any one of claims 1 to 3, characterized in that it is formed by notching so as to form a shape. The locking portion is configured at the notch end edge portion by forming a gap in the recessed fitting portion, and the reinforcing member has the left-right inner end edge portion positioned at the locking portion position, or 5. The building shutter device according to any one of claims 2 to 4, wherein the shutter device for a building is constructed so as to extend to the side of the gap beyond the engaging portion. When the reinforcing member is provided with an extending portion extending toward the gap, the inner edge portion in the left-right direction of the extending portion is inclined outward in the left-right direction toward one side in the front-rear direction. 6. The building shutter device according to claim 5, wherein:

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