JP7289896B2 - shutter device - Google Patents

Description

The present invention relates to a shutter device, and more particularly to a shutter device equipped with a lock mechanism.

2. Description of the Related Art Conventionally, a known shutter device is provided with a lock mechanism that prevents a shutter curtain that opens and closes a frontage from coming off (falling off) from a guide rail due to wind pressure or the like. The lock mechanism prevents the shutter curtain from falling off by attaching a retaining member to the end of the slat that constitutes the shutter curtain and engaging it with the guide rail.

JP 2011-149191 A

However, there is a problem that sufficient wind resistance cannot be obtained depending on the attachment state of the retaining member to the slat or the relationship between the shutter curtain and the guide rail.
SUMMARY OF THE INVENTION In order to solve the above problem, the present invention provides a shutter device capable of preventing the shutter curtain from falling off from the guide rail even when excessive force is applied to the shutter curtain.

As a structure of the shutter device for solving the above-mentioned problems, the structure includes guide rails provided facing each other between the openings, an opening/closing body provided movably along the guide rails, and a slat constituting the opening/closing body. and a drop-off prevention member provided within the guide rail to prevent the opening/closing body from dropping off from the guide rail, wherein the central portion of the main body of the slat is recessed rearward in the depth direction, and the shutter device falls off. The prevention member includes a mounting portion attached to a widthwise end portion of the slat, and a claw portion continuous to the widthwise outer side of the mounting portion and bent inside the guide rail, and the mounting portion is provided above and below the main body portion of the slat. Both side portions extending along the slat facing the slanted portions sloping in the depth direction from the end portions are bent in the same direction, and bent pieces having end faces extending along the width direction of the slat are provided. , the bent piece is formed by bending in the direction opposite to the bending direction of the claw portion, such that the edge on the rear side in the depth direction of the end surface contacts the inclined portion before the edge on the front side in the depth direction. The end surface protrudes in the height direction from the bent portion where the claw portion is bent with respect to the mounting portion, and the edge extending along the width direction of the slat on the end surface is in contact with the inclined portion. are fixed by welding , and the mounting portion to the tip of the claw portion are positioned on one side of the slat in the depth direction. Both side portions extending along the slat are bent in the same direction and have an end face extending along the width direction of the slat, the bending piece being opposed to the inclined portion inclined in the depth direction. is formed by bending toward the same side as the bending direction of the claw portion, and the edge on the front side in the depth direction of the end surface is formed to contact the inclined portion before the edge on the rear side in the depth direction, The end surface protrudes in the height direction from the bent portion where the claw portion is bent with respect to the mounting portion, and the edge extending along the width direction of the slat on the end surface is welded to the slat while in contact with the inclined portion. It is fixed so that the mounting portion to the tip of the claw portion is positioned on one side of the slat in the depth direction. It has an end surface that extends along the width direction of the slat facing the inclined portion that inclines toward the The slat is formed so as to be in contact with the slat in a state in which the end edge extending along the width direction of the slat on the end face protrudes in the height direction from the bent portion where the claw portion is bent with respect to the mounting portion and is in contact with the inclined portion. It may be fixed by welding, and the attachment portion to the tip of the claw portion may be positioned on one side of the slat in the depth direction.
According to this configuration, when the drop-off preventing member is attached to the slat by welding, a gap suitable for welding can be formed between the drop-off preventing member and the slat. Even if the claw portion of the drop-off preventing member comes into contact with the guide rail, the drop-off preventing member is firmly fixed to the slat, so that the drop-off preventing member can be prevented from coming off the slat. As a result, the opening/closing body can be prevented from falling off from the guide rail. In addition, since the mounting portion and the tip of the claw portion are positioned on one side of the slat in the depth direction, the length of the claw portion from the bent portion is shortened by at least the thickness of the slat main body (in the depth direction). can do.
As another configuration of the shutter device, the claw portion may be formed in a trapezoidal shape that tapers from the bent portion toward the tip.
In addition , as another configuration of the shutter device, the mounting portion may include a through hole penetrating in the plate thickness direction, or may include a notch extending from the inner end face in the width direction toward the outer side in the width direction. Also good.
The above summary of the invention is not an exhaustive list of all the necessary features of the invention, and subcombinations of these features can also be inventions.

It is a schematic front view of a shutter device. 4 is a longitudinal sectional view of the shutter curtain and winding mechanism; FIG. It is a cross-sectional view of a guide rail and a lock mechanism. FIG. 3 is a perspective view of a slat end; It is a top view of a lock plate. FIG. 10 is a diagram showing the relationship of the lock plate to the slats; It is a figure which shows operation|movement of a locking mechanism. It is a figure which shows the other form of a lock plate. FIG. 11 shows a welding operation; It is a figure which shows the other form of a lock plate. It is a figure which shows the other form of a lock plate. FIG. 11 shows a welding operation; It is a figure which shows the other form of a lock plate. FIG. 3 is a perspective view of a slat end; FIG. 10 is a diagram showing another form of slat; It is a figure which shows the other form of a lock plate. FIG. 3 is a perspective view of a slat end; FIG. 10 is a diagram showing another form of the shutter curtain; It is a figure which shows the slip prevention member of a slat. FIG. 10 is a diagram showing another form of the shutter curtain; It is a front view of another shutter device. It is a figure which shows the lock mechanism in other shutter apparatuses.

Hereinafter, the present invention will be described in detail through embodiments of the invention, but the following embodiments do not limit the invention according to the scope of claims, and all combinations of features described in the embodiments are the features of the invention. It includes configurations that are not necessarily essential to the solution and are selectively adopted.

1 is a schematic front view of a shutter device 10 according to the present invention, and FIG. 2 is a longitudinal sectional view of a shutter curtain 30 and a winding mechanism 70. FIG. In FIGS. 1 and 2, a shutter device 10 as an opening/closing device is installed in an opening 14 formed in a structure frame (hereinafter simply referred to as frame) 12 . The skeleton 12 is, for example, an outer wall or the like that separates the inside and outside of a structure such as a house, a building, a warehouse, or a factory. The opening 14 is formed in the frame 12 and formed as a space communicating inside and outside.

The shutter device 10 is movable along the longitudinal direction of the guide rails 20; Alternatively, it comprises a shutter curtain 30 as an opening/closing member that closes, a shutter case 16 provided above the opening 14 and the guide rails 20, and a winding mechanism 70 installed in a storage space inside the shutter case 16. .

In this specification, the "width direction" refers to a direction (horizontal direction) orthogonal to the opening/closing (upper, lower) direction of the shutter curtain 30, and the "depth direction" refers to the thickness (front, rear) of the shutter curtain 30. means direction. The "winding direction" means the direction in which the shutter curtain 30 rises along the guide rails 20; 20 to indicate the direction in which the opening 14 closes.

3 is a lateral cross-sectional view of the guide rail 20 and the lock mechanism, and FIG. 4 is a perspective view showing the widthwise end of the slat 32. As shown in FIG. As shown in FIG. 1 , the guide rails 20 ; 20 are erected along the frame 12 forming the opening 14 so that the longitudinal direction thereof is perpendicular to the structure frame 12 .

As shown in FIG. 3, the guide rail 20 includes a receiving frame 21 fixed to the opening 14 of the frame 12, an intermediate frame 22, an inner frame 23 fixed to the receiving frame 21 via the intermediate frame 22, and the receiving frame 21. and outer frames 26; 27 fixed to the inner frame 23 via support frames 24; 25.

The receiving frame 21 is formed in a U-shape having a substrate 21a provided along the end surface of the frame 12 and a pair of side plates 21b; , the base plate 21a is provided along the opening 14 of the frame 12, and fixed by sandwiching the frame 12 between the side plates 21b and 21c.

The intermediate frame 22 is provided on the central side in the depth direction of the substrate 21a. The intermediate frame 22 includes a receiving frame attachment plate 22a that extends along the substrate 21a and is fixed to the substrate 21a, and a column plate 22b that is bent at right angles from the receiving frame attachment plate 22a and extends toward the opening in the width direction. , and an outer frame mounting plate 22c which is bent at a right angle in the opposite direction to the receiving frame mounting plate 22a from the column plate 22b and to which the outer frame 27 is mounted.

The inner frame 23 is formed by bending the inner frame 23 at right angles multiple times in the depth direction and the width direction so as to have an opening 29 into which the end portion of the shutter curtain 30 can be inserted in a cross-sectional view. and a part of the guide region R, which is a space in which the lock plate 60 provided on the slat 32 constituting the shutter curtain 30 moves.
The space formed by the inner frame 23 is a space whose length dimension in the depth direction on the side of the opening 29 is slightly wider than the thickness of the slats 32, and the depth side protrudes toward the indoor side in the depth direction. It is formed so as to have a space wider than the length dimension in the depth direction on the 29 side.

Specifically, the inner frame 23 includes a guide plate 23a extending in the width direction, a back plate 23b bent from the guide plate 23a to the indoor side in the depth direction at right angles, and a width direction opening portion side at right angles from the back plate 23b. A wall plate 23c that extends parallel to the guide plate 23a, a wall plate 23d that is bent perpendicularly from the wall plate 23c to the outside in the depth direction and extends parallel to the back plate 23b, and a wall plate 23d that extends parallel to the back plate 23b. It is formed to have a guide plate 23e that is bent perpendicularly to the width direction opening side and extends parallel to the guide plate 23a.

The guide plate 23a positioned on the outdoor side in the depth direction is set to have a length dimension in the width direction shorter than that of the column plate 22b of the intermediate frame 22, and the back plate 23b continuous with the guide plate 23a The length dimension is set to substantially the same length dimension as that of the receiving frame mounting plate 22a of the intermediate frame 22 . The inner frame 23 is fixed with the guide plate 23a closely attached to the pillar plate 22b of the intermediate frame 22 and the back plate 23b closely attached to the receiving frame mounting plate 22a of the intermediate frame 22. As shown in FIG. Further, the guide plate 23e located on the indoor side in the depth direction is set shorter in the width direction than the guide plate 23a. By setting the length dimension of the guide plate 23e to be shorter than the length dimension of the guide plate 23a, a wall plate 23d extending from the guide plate 23e to the indoor side in the depth direction, and a wall plate 23d extending continuously in the width direction from the guide plate 23e, A space for allowing movement of the lock plate 60 is formed by the wall plate 23c that is continuous with the back plate 23b. In this embodiment, the dimensions of the guide plate 23a and the guide plate 23e are set so that they are located at substantially the same position in the width direction.

The support frames 24 ; 25 are provided between the inner frame 23 and the outer frames 26 ; 27 and constitute structural members of the guide rail 20 .
The support frame 24 is provided along a dent portion that is dented at right angles by the outer peripheries of the guide plate 23e of the inner frame 23 and the wall plate 23d. Specifically, it is bent at a right angle so as to extend along the guide plate 23e and the wall plate 23d of the inner frame 23, and the column plate 24a extends along the guide plate 23e and the column extends along the wall plate 23d. A plate 24b, a bent piece 24c formed by bending the column plate 24a toward the indoor side in the depth direction at right angles, and a bend formed by bending the column plate 24b at right angles toward the opening in the width direction. 24d.

The length dimension of the column plate 24a is set so that it protrudes by a predetermined length in the width direction from the edge of the guide plate 23e when the support frame 24 is fixed to the recessed portion. The length dimension is set so that the outer surface of the bent piece 24 d is flush with the side plate 21 b of the receiving frame 21 .
Further, the support frame 25 is formed to have a U-shaped cross section having a column plate 25a and side plates 25b and 25c formed by bending the column plate 25a at right angles in the same direction. One side plate 25b of the support frame 25 is fixed to the column plate 22b of the intermediate frame 22 so that the column plate 25a extends in the depth direction.
The length dimension of the column plate 25a is set so that the outer surface of the other side plate 25c is flush with the outer surface of the side plate 21c of the receiving frame 21 .

The outer frames 26 and 27 are formed in a symmetrical shape with the shutter curtain 30 interposed therebetween. The outer frame 26 is formed by bending the decorative plate 26a extending along the side plate 21b of the receiving frame 21 and the bent piece 24d of the support frame 24 and the decorative plate 26a toward the outside in the depth direction at right angles. A decorative plate 26b extending along the bent piece 24c, and a guide plate 26c formed by bending the decorative plate 26b toward the frame side in the width direction at right angles and extending toward the inner frame 23 along the column plate 24a. have. The outer frame 27 includes a decorative plate 27a extending along the side plate 21c of the receiving frame 21 and the side plate 25c of the support frame 25, and an outer frame mounting plate 22c of the intermediate frame 22 that is bent at right angles to the indoor side in the depth direction from the decorative plate 27a. and a guide plate 27c bent at right angles along the outer frame mounting plate 22c and the column plate 22b.

The outer frame 26; 27 is arranged such that the end of the guide plate 26c is butted against the end of the guide plate 23e of the inner frame 23, and the end of the guide plate 27c is opposed to the end of the guide plate 23a of the inner frame 23. The length dimensions of the guide plates 26c; 27c are set. The outer frames 26; 27, together with the guide plates 26c; 27c and the inner frame 23, constitute a guide area R for guiding the movement of the shutter curtain 30. As shown in FIG.
Further, the guide rails are arranged such that the surface 26z of the guide plate 26c and the surface 23z of the guide plate 23e of the inner frame 23 are flush with each other, and the surface 27z of the guide plate 27c and the surface 23y of the guide plate 23a of the inner frame 23 are flush with each other. The thickness of the plate material of the receiving frame 21, the intermediate frame 22, the inner frame 23, the supporting frames 24; 25 and the outer frames 26;

That is, a guide surface formed on the indoor side in the depth direction by the surfaces 26z and 23z of the guide plate 26c of the outer frame 26 and the guide plate 23e of the inner frame 23, and the guide plate 27c of the outer frame 27 and the guide plate of the inner frame 23. The surface 27z and the surface 23y of 23a are set so as to be parallel to a guide surface formed on the outdoor side in the depth direction.

The length dimension in the depth direction of the entrance side space formed by the guide plates 26c; 27c of the outer frame 26; 27 and the length dimension in the depth direction of the back side space formed by the guide plates 23a; are set to be the same, as shown in FIG. 7, when the wind pressure or the like applied to the entire shutter curtain 30 causes the slat 32 to pull out inward in the width direction indicated by the arrow X1 in the figure, the lock plate 60 can be increased.
For example, the length in the depth direction of the entrance-side space formed by the guide plates 26c; 27d of the outer frames 26; If it is larger or smaller than the length dimension, the inclination of the slat 32 becomes large and the amount of engagement of the lock plate 60 with the inner frame 23 becomes small, and the guide rails 20; 20 are configured as shown in FIG. Although the ability to prevent the shutter curtain 30 from falling off from the guide rails 20; can be done.

As shown in FIG. 1 , the shutter curtain 30 is configured by connecting a plurality of slats 32 along the moving direction of the shutter curtain 30 . Each slat 32 is a plate made of, for example, steel, stainless steel, aluminum, or the like, and extends along the width direction of the opening 14. Both ends of the slat 32 are swallowed by the guide region R to form a guide rail. 20; guided by 20;

As shown in FIG. 4, the slat 32 includes a main body portion 32a whose central portion is gently recessed toward the rear in the depth direction, and an upper end portion of the main body portion 32a that is continuous with the upper end portion and extends forward. It has a first curled portion 32b that curves and extends, and a second curled portion 32c that curves and extends forward continuously from the lower end of the body portion 32a.

As shown in FIG. 2, the first curled portion 32b of the slat 32 is rotatably engaged with the second curled portion 32c of the other slat 32 adjacent in the winding direction, and the second curled portion 32c of the slat 32 is , rotatably engages with the first curled portion 32b of another slat 32 adjacent in the extending direction. That is, the plurality of slats 32 are rotatably connected to each other via the first curled portion 32b and the second curled portion 32c, respectively, to form one shutter curtain 30. As shown in FIG.

The lock mechanism 40 provided in the shutter device 10 will be described below. As shown in FIGS. 3 and 4 , the lock mechanism 40 is composed of the inner frame 23 of the guide rail 20 and lock plates 60 arranged at the outer ends of the slats 32 in the width direction.

As shown in FIGS. 3 and 4, the lock plate 60 according to the present embodiment is a fall prevention member that prevents the slats 32 from falling off the guide rails 20; 32 are fixed to inclined portions 32d;

The lock plate 60 is a plate made of a metal such as steel or stainless steel and formed to be thicker than the plate thickness of the slat 32. The lock plate 60 is firmly welded to both ends of the slat 32 in the width direction by welding with a welding robot. Fixed. The lock plate 60 is formed into a predetermined shape by, for example, sheet metal processing such as pressing.

FIG. 5 is a plan view of the lock plate 60. FIG. As shown in FIG. 5, the lock plate 60 extends in the width direction while overlapping the main body portion 32a of the slat 32, and is integrated with the slat 32 by welding. It has a claw portion 64 formed by bending toward the depth direction on the outside in the width direction. The mounting portion 62 has bent pieces 63 , 63 bent in the same direction on both sides extending along the slat 32 . As shown in FIG. 5, the bent pieces 63; 63 are formed by bending in a direction opposite to the direction in which the claw portion 64 is bent. The end faces 63a of the bent pieces 63; 63 along the extending direction of the slat 32 are positioned such that the indoor side edge 63A forming the end face 63a is located outside the outdoor side edge 63B in the height direction. is inclined with respect to the depth direction.

FIG. 6(a) is a diagram showing the relationship between the lock plate 60 and the slats 32. FIG. As shown in FIG. 6, the bent pieces 63; 63 of the lock plate 60 are bent at a bending angle so that the edge 63A contacts the inclined portions 32d; 32e of the slat 32 before the edge 63B. be done. By forming the bent pieces 63; 63 in this way, it is possible to minimize the gaps between the inclined portions 32d; 32e of the slats 32. As shown in FIG.

For example, when the edge 63B; 63B first contacts the inclined portion 32d; If there is a gap that the welding rod cannot penetrate, the welding will depend on the skill of the operator, and even if the welding is successful, the welding will be uneven, and sufficient strength will not be obtained for fixing the lock plate 60. There is a risk that it will not be possible. Therefore, as described above, by providing the bent piece 63 in the mounting portion 62 so that the edge 63A; 63A contacts the inclined portion 32d; 32e of the slat 32 earlier than the edge 63B; A gap between the slat 32 and the lock plate 60 can be minimized. For example, even if the machining accuracy of the slat 32 and the lock plate 60 is considered, the gap between the upper and lower edges of the back surface and the slat 32 can be suppressed to about 0.1 to 0.2 mm.

In this way, by controlling the gap between the slat 32 to be welded and the lock plate 60, stable welding can be performed regardless of the skill of the welding operator. For example, homogeneous welding can be achieved. It is possible to use welding robots to

Therefore, in order to enable the use of a welding robot, as shown in FIG. 5, the attachment portion 62 is provided with an elongated hole 68 penetrating in the plate thickness direction at its center. When the lock plate 60 is welded to the slat 32 , the elongated hole 68 is engaged with a positioning jig J having projections that can be inserted corresponding to the shape of the elongated hole 68 , thereby locking the slat 32 . It functions as positioning means for positioning the plate 60 at a predetermined position.

As shown in FIGS. 3 to 5, the claw portion 64 is formed in a trapezoidal shape that extends continuously from the mounting portion 62 via the bent portion and tapers toward the tip. The claw portion 64 is bent outward in the width direction with respect to the mounting portion 62 . As shown in FIG. 5(c), it is desirable that the angle θ between the surface 64a of the claw portion 64 and the surface 62a of the mounting portion 62 is set to about 150°. It is preferably inclined at least at an obtuse angle to .

As shown in FIG. 3, the slats 32 and the lock plate 60 do not normally come into contact with the inner frame 23, and the opening/closing operation of the shutter curtain 30 is not hindered. On the other hand, as shown in FIG. 7, when the slat 32 moves inward in the width direction indicated by the arrow X1, the surface 64a of the claw portion 64 contacts the inner frame 23, and the slat 32 further moves inward in the width direction. is suppressed, and falling off of the shutter curtain 30 from the guide rail 20 can be prevented.

FIG. 6B is a diagram schematically showing how the lock plate 60 is welded to the slat 32. As shown in FIG. In the following description, it is assumed that welding is performed by a robot.
First, the lock plate 60 is arranged at a predetermined position on the slat 32 . Then, the robot arm to which the jig J is attached is moved to insert the projection of the jig J into the elongated hole 68 of the lock plate 60 to fix the position of the lock plate 60 with respect to the shutter curtain 30 . Next, the lock plate 60 is pressed toward the shutter curtain 30 by a predetermined amount via the jig J before welding is started. When the lock plate 60 is pressed by the jig J, it is set so as to be perpendicular to the slat center line f of the slat 32 as indicated by F in the drawing. The pressing amount is set, for example, to about 1 mm in the direction orthogonal to the slat center line f from the position where the lock plate 60 is fixed with respect to the slat 32 . Note that the slat center line f is the rotation center c1 (in the drawing) between the first curled portion 32b and the second curled portion 32c of the slat 32 that engage with each other, the second curled portion 32c of the slat 32, and the first curled portion 32c. A straight line connecting the portion 32b and the center of rotation c2.

In this way, by pressing the lock plate 60 in the direction perpendicular to the slat center line f via the jig J, even if the slat 32 to which the lock plate 60 is attached is deformed, the rotation centers c1; Since the slats 32 move along the center line f of the slats, it is possible to prevent a change in the engagement relationship between the slats 32 and the movable range. Then, the welding torch T attached to the robot arm is brought close to the lock plate 60, which is the welding point, between the slats 32, and the welding wire t is brought into contact between the edge 63A of the lock plate 60 and the slat 32, Movement along edge 63A automatically welds lock plate 60 to slat 32 and secures it. By automating the welding by the robot in this way, welding unevenness is eliminated and the desired welding strength is obtained. It can stabilize the anti-falling performance that falls off.

8A and 8B are diagrams showing another form of the lock plate 60. FIG. FIG. 9 is a schematic diagram of the welding operation of the lock plate 60. As shown in FIG. The lock plate 60 described above is formed so that the end face 63a of the bent piece 63; 63 is in contact with the inclined portion 32d; A locking plate 60 may be formed as shown. That is, as shown in FIG. 8(b), the bent pieces 63; In this case, the edge 63B of each bent piece 63; 63 is formed to come into contact with the inclined portion 32d; 32e of the slat 32 before the edge 63A.

When the bent pieces 63; 63 are formed in this way, as shown in FIG. 8(c), the end faces 63a; 63a and the inclined portions 32d; A V-shaped gap is formed between them. As shown in FIG. 9, this V-shaped gap allows welding members such as welding wires t and welding rods to enter, so that the end surfaces 63a; 63a and the inclined portions 32d; 32e of the slats 32 are stabilized. can be welded together.

10A and 10B are diagrams showing another form of the lock plate 60. FIG. For example, the facing surface 62b of the mounting portion 62 that faces the slat 32 may interfere with the concave portion 32m of the main body portion 32a of the slat 32 . In such a case, instead of the elongated hole 68 provided as the positioning means, a U-shaped cut extending outward from the end surface 62c positioned on the inner side in the width direction may be used to avoid contact with the recessed portion 32m. A chip should be formed.

11A and 11B are diagrams showing another form of the lock plate 60. FIG. In each of the above examples, the bent pieces 63; 63 are formed on the lock plate 60 to set the welding portion between the lock plate 60 and the slat 32. However, as shown in FIG. 63; The mounting portion 62 in the form of a flat plate may be directly welded to the slat 32 without providing the 63. In this case, the end faces 63a; 63a of the mounting portion 62 are arranged so that the edges 63A; 63A come into contact with the inclined portions 32d; 32e before the edges 63B; It is formed in a trapezoidal shape. That is, the slat 32 side edge 63B; 63B forming the end surface 63a; 63a of the flat mounting portion 62 is formed so that the opposite side edge 63A; 63A comes into contact with the inclined portion 32d; , the clearance to the slat 32 can be controlled. Such processing of the end surfaces 63a; 63a can be performed with high accuracy by using crushing processing, for example. 12, the lock plate 60 can be firmly fixed to the slat 32 by welding along the edges 63A; 63A contacting the inclined portions 32d; 32e of the slat 32. Therefore, the shutter curtain 30 can be prevented from falling off from the guide rails 20;20. By providing the mounting portion 62 with an elongated hole 68, welding by a robot can be automated.

13A and 13B are diagrams showing another form of the lock plate 60. FIG. The lock plate 60 shown in FIG. 13 includes bent pieces 63u; Prepare. The bent pieces 63u; 63u are formed on the hook portion 64 side of the mounting portion 62, and the bent pieces 63d; 63d are formed inside the bent pieces 63u; 63u in the width direction. By providing the bent pieces 63u; 63u; 63d; For example, as a method of welding to the slat 32, as shown in FIG. If you want to orient it, it is necessary to prepare two types of lock plates 60 shown in FIGS.

Therefore, as shown in FIG. 13, the lock plate 60 can be shared by providing a single lock plate 60 with bent pieces 63u; 63u and bent pieces 63d; That is, as shown in FIG. 14A, when the claw portion 64 is fixed to the slat 32 with the claw portion 64 directed toward the interior side in the depth direction, the bent pieces 63u located on the inner side in the width direction and the slat 32 are welded. As shown in FIG. 14(b), when the claw portion 64 is fixed to the slat 32 with the claw portion 64 facing the outside in the depth direction, the bent pieces 63d located on the outside in the width direction (on the claw portion 64 side); 32 should be welded.

In the description so far, the slat 32 has a shape in which the central portion is gradually recessed toward the indoor side in the depth direction of the slat 32 in cross section, but as shown in FIG. The main body portion 32a can also be applied to a slat having a shape in which the central portion gently swells in a convex shape toward the rear in the depth direction. 15(a) shows a lock plate 60 formed as shown in FIG. It shows that welding is performed between the inclined portions 32d; 32e. FIG. 15(b) shows a lock plate 60 formed as shown in FIG. Edge 63B; 63B side is welded from between 32e. FIG. 15(c) shows a lock plate 60 formed as shown in FIG. Edge 63B; 63B side is welded from between 32e. FIG. 15(d) shows a lock plate 60 formed as shown in FIG. ; 32e are welded together. FIG. 15(e) shows a lock plate 60 formed as shown in FIG. The parts 32d; 32e are welded.

16A and 16B are diagrams showing another form of the lock plate 60. FIG. FIG. 17 shows the end of the slat 32. FIG. The slat 32 shown in FIG. 17 has a shape in which the main body portion 32a gently bulges toward the rear in the depth direction, and the central portion of the slat 32 is gently swelled in a convex shape. will be explained. When the main body portion 32a is gently curved in a convex shape like the slat 32 shown in FIG. By doing so, as shown in FIGS. 5 and 8, bent pieces 63; 63 are formed in the mounting portion 62, and as shown in FIG. 62B of the mounting portion 62 on the side of the slat 32 can be brought into direct contact with the back surface of the main body portion 32a of the slat 32 without crushing. That is, as shown in FIG. 15, the mounting portion 62 of the lock plate 60 can be welded to the back surface of the main body portion 32a of the slat 32 without fixing the lock plate 60 to the inclined portions 32d; 32e of the slat 32. In the following description, it is assumed that the lock plate 60 is fixed to the main body portion 32a of the slat 32. As shown in FIG.

As shown in FIG. 17, the lock plate 60 includes a stopper portion (displacement prevention means) 65 for preventing displacement in the width direction between the slats connected via the first and second curled portions 32b; 32c; 65 is provided integrally with the claw portion 64 .
The stopper portions 65; 65 are formed integrally with the lock plate 60 together with the claw portion 64, the mounting portion 62, and the like. Specifically, they are provided to form a pair of top and bottom in the height direction from between the claw portion 64 and the mounting portion 62, and are formed to have an airfoil shape projecting in a slightly inclined state toward the inside in the depth direction. be done.
When the slats 32 are engaged with each other, the rear edges of the upper and lower stopper portions 65; 65 contact the edges of the upper and lower first and second curled portions 32b; 32c. , the connected slats 32 are fixed in a positioned state to prevent slippage.

A bent portion 66 of the stopper portion 65 ; 65 that is bent so as to be inclined with respect to the mounting portion 62 is formed with a concave portion 67 ; ing. Since the stopper portions 65; 65 are positioned so as to be in contact with the side end faces of the first and second curled portions 32b; In order to adjust the length of the slat curtain according to the vertical length of the opening of the object, there are cases where the slats 32 are pulled out, inserted, and retained, and the stopper portions 65 are bent back. . Since the end face of the stopper portion 65; 65 on the side of the slat 32 is set with a slight clearance with respect to the end face of the slat 32 to allow the rotation of the slats 32; If this is done, the bent portions 66; 66 bulge and interfere with the ends of the slats 32. For this reason, conventionally, when the stopper portion 65; By providing the recesses 67 on the side of the slat 32 so as to make it thinner, extra repair work such as scraping off the bulges becomes unnecessary. In addition, the force required for unbending is reduced, and workability can be improved.
As shown in FIG. 18, such a lock plate 60 can prevent the slats 32 from shifting in the width direction by providing every other slat 32 constituting the shutter curtain 30. As a result, even if a force is applied to move the slats 32 inward in the width direction, the claws 64 are evenly engaged with the guide rails 20; 20, and the shutter curtain 30 falls off the guide rails 20; Preventive performance can be stabilized.

FIG. 19 is a view showing an anti-slip plate 80 obtained by separating anti-slip means for the slats 32 from the lock plate 60 shown in FIG.
As shown in FIG. 19, the anti-slip plate 80 is formed of a metal plate thicker than the slats 32 and having a substantially T shape as a whole, with the claw portion 64 removed from the lock plate 60 shown in FIG. formed by The anti-slip plate 80 includes a fixed portion 82 having a rectangular flat plate shape, and wings protruding inward in the depth direction in an inclined state so as to form a pair in the vertical direction from the outer end portion in the width direction of the fixed portion 82 . A stopper portion 85; 85 having a mold shape is provided.
The fixed portion 82 is formed with an elongated hole 88 similarly to the lock plate 60, and is configured to be welded to the slat 32 by a robot using a jig J. The bent portions 86; 86 of the stopper portions 85; 85 bent so as to be inclined with respect to the fixed portion 82 are formed with concave portions 87; ing. It should be noted that the concave portion 87 can provide the same effect as the concave portion 67 of the lock plate 60 shown in FIG.
As shown in FIG. 20, anti-slip plates 80 are alternately provided with lock plates 60 as shown in FIGS. Contributes to the stability of fall prevention performance.

FIG. 21 is a schematic front view of a pipe shutter 110 as an example of the shutter device according to the present invention, and FIG. 22 is a diagram showing the end structure of the pipe shutter 110. As shown in FIG.
A pipe shutter 110 is installed in an opening 112 formed in a structural frame 111 . The structural frame 111 is, for example, an outer wall that separates the inside and outside of a structure such as a house, a building, a warehouse, or a factory, or an inner wall that separates an internal space inside the structure. The opening 112 is formed in the structural frame 111 and formed as a space that communicates the inside and the outside.

The pipe shutter 110 generally includes a pair of guide rails 113; A pipe curtain 130 for opening and closing the opening 112 and a winding mechanism 150 installed in a housing space in a shutter case 114 provided above the opening 112 and the guide rails 113 .
In this specification, the “width (frontage) direction” refers to a direction orthogonal to the opening/closing direction of the pipe curtain 130 and different from the thickness (depth) direction of the pipe curtain 130 .

As shown in FIGS. 21 and 22, the guide rails 113; 113 are erected in a state where they are partly embedded in the structure frame 111 so that the longitudinal direction thereof is perpendicular to the structure frame 111. As shown in FIGS.
As shown in FIG. 22 , the guide rail 113 includes a guide frame 160 that guides movement of the pipe curtain 130 and a stopper frame 170 that prevents the pipe curtain 130 from falling off from the opening of the guide frame 160 .
The guide frame 160 includes a guide portion 160a having a U-shaped cross section with one opening, and frame fixing portions 160b and 160c bent perpendicularly in opposite directions from each opening end. The guide frames 160; 160 have the openings 161; 161 opposed to each other, and the guide portions 160a; 160a are embedded in the frame 111, and the frame fixing portions 160b;
The stopper frames 170; 170 are formed in a symmetrical shape with the pipe curtain 130 interposed therebetween. Each stopper frame 170 has a folded portion 170a that is formed by folding at a substantially right angle in the depth direction and the width direction, and is folded at a right angle from the folded portion 170a to extend along the frame fixing portions 160b; 160c of the guide frame 160. and a lock portion 170c bent at right angles from the extension portion 170b and extending outward in the width direction of the guide frame 160. As shown in FIG.

As shown in FIG. 21, the pipe curtain 130 is assembled in a grid pattern in front view by a plurality of pipe bodies 131 and a link mechanism 132 that connects the plurality of pipe bodies 131 to each other.
The plurality of link mechanisms 132 are composed of a plurality of plates connected to each other in a direction perpendicular to the longitudinal direction of the pipe body 131 . A circular hole through which the pipe body 131 can be inserted is formed at both ends of each plate, and a connecting mechanism for rotatably connecting the plates is provided. It is rotatably connected so that the body 131 can be wound.

As shown in FIG. 22, retaining pieces 135 are provided at each end of the pipe bodies 131 that are connected to each other by a plurality of link mechanisms 132 . The retainer piece 135 is an annular cylindrical body through which the pipe body 131 can be inserted, and is made of hard synthetic resin.
The outer diameter D1 of the retainer piece 135 is set larger than the outer diameter D2 of the pipe body 31 and also larger than the width dimension W1 between the lock portions 170c, 170c of the pair of stopper frames 170;170.
In other words, by setting the width dimension W1 between the lock portions 170c, ; can be prevented from falling off from the guide rail 113.

Therefore, in the maintenance or replacement work of the pipe curtain 130, the pipe body 131 can be easily removed from the guide rails 113; 113 by removing the stopper frames 170; Become.

The winding mechanism 150 of the pipe shutter 110 will be outlined below.
As shown in FIG. 21 , the winding mechanism 150 is a mechanism installed inside the shutter case 114 . The winding mechanism 150 generally includes left and right brackets 115; 115 forming a part of the shutter case 114, a shaft 151 installed between the left and right brackets 115; It has a wheel 152 rotatable in the delivery direction and a coil spring 153 wound around a shaft 151 .

The shaft 151 is a column extending in the width direction of the opening 112 (longitudinal direction of the pipe curtain 130), and both ends thereof are fixed to the brackets 115, 115 by fixing means such as bolts so as to be non-rotatable.
The wheel 152 is a cylindrical metal member provided with a predetermined distance from the shaft 151 . The wheel 152 is fitted with the shaft 151 via a fitting hole (not shown) formed in the center, and freely rotates around the shaft 151 . Also, the wheels 152; 152 are connected by a plurality of winding members 154. As shown in FIG.

The winding member 154 is a support that extends parallel to the shaft 151, and both ends are fitted into connection holes (not shown) that are formed at equal intervals in the circumferential direction around the insertion hole of the wheel 152. As shown in FIG. The wheels 152; 152 are connected to each other by the winding member 154 so that both wheels 152; 152 rotate about the shaft 151 synchronously with each other. Further, the upper end of the pipe curtain 130 is fastened to the outer periphery of the winding member 154 by means of fastening means such as bolts and nuts via a suspension member (not shown). Thus, when the wheel 152 rotates in the winding direction after the pipe curtain 130 closes the opening 112 , the pipe curtain 130 is wound along the wheel 152 and the winding member 154 .

The coil spring 153 is an urging member inserted around the axis of the shaft 151 and connected to the shaft 151 fixedly provided and the wheel 152 rotatably fitted to the shaft 151 . One end of the coil spring 153 is fastened to a fastening hole formed in the shaft 151 by fastening means such as bolts and nuts. Further, the other end of the coil spring 153 is fixed to a fastening hole formed on the surface of the wheel 152 by fixing means such as bolts and nuts in the same manner as described above.
Since the shaft 151 and the wheel 152 are connected by the coil spring 153 , the coil spring 153 exerts a reaction force in the direction to open the opening 112 when the pipe curtain 130 is extended in the direction to close the opening 112 . When the opening 112 is opened, the pipe curtain 130 can be wound up with a slight force.

Although the present invention has been described above based on the embodiments, the technical scope of the present invention is by no means limited to the above-described embodiments, and it is understood that various modifications and improvements can be made by combining the embodiments. clear to the trader. In addition, it is clear from the description of the scope of claims that such forms with various modifications and improvements can be included in the technical scope of the present invention.

10 shutter device, 14 opening, 16 shutter case,
20 guide rail, 30 shutter curtain, 32 slat, 40 lock mechanism,
60 Lock plate, 62 Mounting portion, 64 Claw portion, 70 Winding mechanism.

Claims (6)

guide rails facing each other between the openings;
an opening/closing body provided movably along the guide rail;
a falling-off prevention member provided on a slat that constitutes the opening/closing body and preventing the opening/closing body from falling off from the guide rail within the guide rail;
A shutter device comprising
the slat has a central portion of the main body recessed rearward in the depth direction,
The falling prevention member is
a mounting portion attached to a width direction end of the slat;
a claw portion continuous to the outside in the width direction of the mounting portion and bent in the guide rail;
with
The mounting portion faces inclined portions that are inclined in the depth direction from the upper and lower ends of the main body portion of the slat, and is bent in the same direction to both side portions extending along the slat. a folded piece having an end face extending along the
The bent piece is formed by bending in a direction opposite to the bending direction of the claw portion, and the edge on the rear side in the depth direction of the end face bends to the inclined portion before the edge on the front side in the depth direction. formed to touch,
The end surface protrudes in the height direction from the bent portion formed by bending the claw portion with respect to the mounting portion, and an edge of the end surface extending along the width direction of the slat is in contact with the inclined portion. wherein the shutter is fixed to the slat by welding, and the attachment portion to the tip of the claw portion are located on one side of the slat in the depth direction. guide rails facing each other between the openings;
an opening/closing body provided movably along the guide rail;
a falling-off prevention member provided on a slat that constitutes the opening/closing body and preventing the opening/closing body from falling off from the guide rail within the guide rail;
A shutter device comprising
the slat has a central portion of the main body recessed rearward in the depth direction,
The falling prevention member is
a mounting portion attached to a width direction end of the slat;
a claw portion continuous to the outside in the width direction of the mounting portion and bent in the guide rail;
with
The mounting portion is
End surfaces extending along the width direction of the slat are bent in the same direction to both side portions extending along the slat facing the inclined portions inclined in the depth direction from the upper and lower ends of the main body portion of the slat. a folded piece having
The bent piece is formed by bending toward the same side as the direction in which the claw portion is bent, and the edge on the front side in the depth direction of the end face bends before the edge on the rear side in the depth direction. formed to touch the part,
The end surface protrudes in the height direction from the bent portion formed by bending the claw portion with respect to the mounting portion, and an edge of the end surface extending along the width direction of the slat is in contact with the inclined portion. wherein the shutter is fixed to the slat by welding, and the attachment portion to the tip of the claw portion are located on one side of the slat in the depth direction. guide rails facing each other between the openings;
an opening/closing body provided movably along the guide rail;
a falling-off prevention member provided on a slat that constitutes the opening/closing body and preventing the opening/closing body from falling off from the guide rail within the guide rail;
A shutter device comprising
the slat has a central portion of the main body recessed rearward in the depth direction,
The falling prevention member is
a mounting portion attached to a width direction end of the slat;
a claw portion continuous to the outside in the width direction of the mounting portion and bent in the guide rail;
with
The mounting portion is
end faces extending along the width direction of the slat facing inclined portions inclined in the depth direction from the upper and lower ends of the main body portion of the slat,
The end face is
The edge on the rear side in the depth direction is formed to contact the inclined portion before the edge on the front side in the depth direction,
An end edge extending along the width direction of the slat on the end face protrudes in the height direction from the bent portion where the claw portion is bent with respect to the mounting portion, and contacts the slat in a state of being in contact with the inclined portion. The shutter device is fixed by welding, and the attachment portion to the tip of the claw portion is located on one side of the slat in the depth direction. 4. The shutter device according to claim 1, wherein the claw portion is formed in a trapezoidal shape tapering from the bent portion toward the tip. 5. The shutter device according to claim 1, wherein the mounting portion has a through hole penetrating in a plate thickness direction. The shutter device according to any one of claims 1 to 4, wherein the mounting portion has a notch extending from the inner end face in the width direction toward the outer side in the width direction.

Images