JP7597614B2 - Building shutter device - Google Patents

Description

The present invention relates to the technical field of a shutter device for a building that is attached to an opening such as an entrance or exit of a building such as a building or a house.

Generally, shutter devices for buildings are installed in openings such as entrances and exits of buildings such as buildings and houses. Such shutter devices are made up of various components and devices, such as guide rails provided on the left and right sides of the opening, a shutter curtain that is guided up and down on the guide rails to open and close the opening, a winding body (winding wheel, winding drum) that is disposed above the opening and on which the shutter curtain is wound, left and right brackets that are attached to the main body side members while supporting both the left and right ends of the winding body, and an electric opening and closing mechanism provided on either the left or right bracket in the case of one that rotates the winding body electrically.
In such a shutter device, the bracket comprises a bracket main body portion that supports a support shaft provided at the end edge of the roll-up body, and a folded piece portion that is folded and formed from the lower edge of the bracket main body portion, and it has been proposed to support a reinforcing material between the left and right folded pieces to reinforce the liner portion that encases the shutter curtain (see, for example, Patent Document 1).

JP 2017-43902 A

In the shutter device, a guide body (guide roller, smoother) may be provided to smoothly guide the shutter curtain unwound from the winding body into the guide piece portion formed in an expanded shape on the upper edge of the guide rail; in this case, the guide body is often attached to the reinforcing material.
On the other hand, in the case of shutter devices, there are multiple specifications available within the same series of products, such as a ceiling-mounted type in which the shutter case is housed within the ceiling board, and an exposed-mounted type in which there is no ceiling board and the shutter case is exposed to the outside. In this case, the position of the magus part that is provided to contain the shutter curtain within the shutter case differs depending on whether it is below or above the folded piece of the bracket. If the position of the magus part differs from top to bottom in this way, the position of the guide piece part of the guide rail will also differ from top to bottom, and as a result, the guide body must also be displaced up and down. This poses problems such as the need for dedicated guide bodies for each part, which increases the number of parts, and these are the issues that the present invention aims to solve.

The present invention has been created in view of the above-mentioned circumstances and with the aim of solving these problems. The invention of claim 1 comprises a guide rail provided on the left and right sides of an opening of a building, which guides the shutter curtain up and down to open and close the opening, a winding body provided above and in front of the opening and on which the shutter curtain is wound , left and right brackets attached to a body side member in a state of supporting both left and right end edges of the winding body , a guide piece portion incorporated in the bracket and formed on the upper end edge of the guide rail to expand outward in the front-rear direction, a magus space formed below the guide piece portion and in which the seat plate of the lowest end of the shutter curtain that is swallowed in the fully open state is accommodated, and a guide roller provided in front of the guide piece portion to guide and guide the shutter curtain unwound from the winding body to the guide piece portion , the bracket is configured to include a bracket main body portion on which the winding body is supported , and a lower bent piece portion bent from the lower end edge of the bracket main body , the magus space being an upper magus space above the lower bent piece portion, and a lower In this shutter device for buildings, two specifications are set, a first specification which is a lower magus space below the side bent piece , and a second specification which is a lower magus space below the side bent piece. The lower side portion of a square tubular reinforcing material supported on left and right bracket main bodies via connecting metal fittings is attached to the lower bent piece, and the guide roller is attached to the reinforcing material. The mounting position of the reinforcing material is configured so that the upper specification is a rear mounting position closer to the guide rail than the lower specification. The guide roller is attached to the upper side portion of the reinforcing material in the upper specification, and to the rear side portion of the reinforcing material in the lower specification, so that the mounting height of the upper specification relative to the reinforcing material is higher than that of the lower specification. The reinforcing material is attached so that its position in the front-to-rear direction can be freely adjusted relative to the lower bent piece and the guide rail main body so that the upper specification is a rear mounting position closer to the guide rail than the lower specification. This is a shutter device for buildings, characterized in that it is configured so that the front-to-rear arrangement position of the guide roller relative to the guide piece is the same for either specification .
The invention of claim 2 is a shutter device for buildings as described in claim 1, characterized in that the lower folded piece has a plurality of sets of mounting holes drilled therein corresponding to the mounting positions of the reinforcing material.
The invention of claim 3 is a shutter device for buildings as described in claim 1 or 2, characterized in that the connecting fitting is configured to include a connecting base having an upper piece and a front piece that abut the upper side portion and the front side portion, and a connecting piece extending upward from the upper piece and connected to the bracket main body portion, and the front piece is fastened to the front side portion via a fastening material inserted in the fore- and-aft direction.
The invention of claim 4 is a shutter device for buildings as described in claim 3, characterized in that the connecting piece is connected to the bracket main body using a square root bolt having a square column-shaped bolt head portion of the screw portion, and the square root bolt is inserted into a square-shaped mounting hole provided on the bracket main body in a non-rotating manner.

By adopting the invention of claim 1, when attaching a reinforcing material to the lower bent piece provided on the lower end edge of the left and right brackets on which the winding body is supported, the reinforcing material can be attached so that its position in the front-to-rear direction can be freely adjusted, thereby making it possible to arbitrarily attach the reinforcing material in accordance with the specifications.
Furthermore, since the position of the seat plate when the shutter curtain is fully open differs between the upper specification which fits into the magus space above the lower folded piece and the lower specification which fits into the magus space below the lower folded piece, even if the mounting position of the reinforcing material relative to the lower folded piece differs, a corresponding mounting hole is formed, so that the reinforcing material can be reliably mounted according to the specifications.
According to the invention as defined in claim 2, the reinforcing material can be easily attached with high accuracy so that its position in the front-rear direction can be freely adjusted by providing a plurality of sets of attachment holes corresponding to the specifications.
By adopting the invention of claim 3 , when the reinforcing material is further connected to the bracket main body portion via a connecting fitting, the connecting fitting is connected to the reinforcing material via a fastening material inserted in the front-to-rear direction, and as a result, the reinforcing material is firmly attached in combination with being connected to the lower folded piece portion.
By using the invention of claim 4 , a square root bolt with anti-rotation properties is used as the fastening material when connecting the reinforcing material to the bracket main body, so that secure fastening can be achieved even in places where the bracket main body is close to a structural component such as a wall and anti-rotation support cannot be provided using a tool such as a wrench.

FIG. This is a side view of the drive side bracket portion fastened to a wooden support with a through bolt in a ceiling installation specification. This is a side view of the driving side bracket portion fastened to a wooden post with a through bolt in an exposed installation specification. This is a side view of the drive side bracket portion fastened with a screw to a wooden support in a ceiling installation specification. This is a side view of the driving side bracket portion fastened to a wooden post with a screw in an exposed installation specification. This is a side view of the drive side bracket portion fastened to a steel pillar with a screw in a ceiling installation specification. This is a side view of the driving side bracket portion fastened to a steel pillar with a screw in an exposed installation specification. 1A, 1B, and 1C are a side view, a partially cutaway front view, and a bottom view of the drive side bracket. 1A, 1B, and 1C are a side view, a partially cutaway rear view, and a bottom view of the driven bracket. This is an enlarged side view of the Magusa portion when installed inside the ceiling. This is an enlarged side view of the magusa portion in the exposed installation specification. This is a front view of the magusa part with exposed installation. 1A, 1B, and 1C are a side view, a front view, and a plan view of a connecting fitting. 13A and 13B are plan views of the essential parts showing the installation state of the shallow groove guide rail and the deep groove guide rail when the bracket is fastened to a wooden post using a through bolt. 13A and 13B are plan views of the essential parts showing the installation state of the shallow groove guide rail and the deep groove guide rail when the bracket is fastened to a wooden post using screws. 13A and 13B are plan views of the essential parts showing the installation state of the shallow groove guide rail and the deep groove guide rail when the bracket is fastened to a steel support using a screw. 13A and 13B are a plan view and a front view of the main parts showing the installation state of the shallow groove guide rail and the deep groove guide rail when the bracket is fastened to a wooden post using a through bolt, and the fastening position of the bracket. 13A and 13B are a plan view and a front view of the main parts showing the installation state of the shallow groove guide rail and the deep groove guide rail when the bracket is fastened to a wooden post using screws, and the fastening position of the bracket. 1A and 1B are a plan view and a front view of the main parts showing the installation state of the shallow groove guide rail and the deep groove guide rail when the bracket is fastened to a steel post using screws, and the fastening position of the bracket. 13A, 13B, and 13C are a side view, a front sectional view, and a bottom view of a driving side bracket according to a second embodiment. 13A and 13B are a plan view and a front view of the main parts showing the installation state of the shallow groove guide rail and the deep groove guide rail when the bracket is fastened to a wooden post using screws, and the fastening position of the bracket.

The following describes an embodiment of the present invention with reference to the drawings. In the drawings, 1 is a shutter device for a building, and the shutter device 1 is configured using various member devices such as two sets (two types) of guide rails 2 and 3 (described later) provided on the left and right sides of an opening E such as an entrance or exit of a building, a shutter curtain 4 that is guided up and down by the guide rails 2 and 3 to open and close the opening E, a winding body (winding wheel, winding drum) 5 that is arranged above the opening E and on which the shutter curtain 4 is wound, driving side and driven side brackets 6 and 7 that support both left and right end edges of the winding body 5, and an electric opening and closing machine 8 that is attached to the driving side bracket 6 side and rotates the winding body 5, and the shutter curtain 4 is guided by the guide rails 2 and 3 by the rotation of the winding body 5 linked to the forward and reverse drive of the opening and closing machine 8, all of which are conventional.

The two types of guide rails 2 and 3 are each formed with a guide groove X that is a concave groove, as shown in FIG. 14, for example. One of the guide rails 2 has a small (narrow) rail width in the left-right direction from the opening piece 2a on the inside of the left-right direction that forms the groove opening of the guide groove X to the groove bottom piece (rail outer end piece) 2b on the outside of the left-right direction, and the groove depth of the guide groove X is shallow. The other guide rail 3 has a large (wide) rail width in the left-right direction from the opening piece 3a to the groove bottom piece 3b, and the groove depth of the guide groove X is deeper than that of the guide rail 2. These are used depending on the left-right width of the shutter curtain 4. In this embodiment, two sets of guide rails 2 and 3 with different left-right widths are set, but it goes without saying that three or more sets may be set if necessary.

The larger the shutter curtain 4 is in width, the greater the amount of bending when exposed to strong winds, and the greater the amount of movement of the left and right edges, making it easier for it to slip out of the guide rails 2 and 3. Therefore, in order to prevent the shutter curtain 4 from slipping out of the guide rails 2 and 3, a guide rail 2 with a shallow groove depth is used for shutter curtains 4 with a small left and right width, and a guide rail 3 with a deep groove depth is used for shutter curtains with a large left and right width. By using the guide rails 2 and 3 in this way, the swallowing allowance (amount of swallowing, depth of insertion) of the left and right edges of the shutter curtain 4 in the guide groove X is shallow for shutter curtains with a small left and right width, and deep for shutter curtains with a large left and right width, which is a consideration to prevent the shutter curtain 4 from slipping out of the guide rails 2 and 3 when it is bent by strong winds. In the following explanation, these guide rails 2 and 3 are referred to as the "shallow groove guide rail 2" and the "deep groove guide rail 3".

The brackets 6, 7 are formed with a bracket main body 6a, 7a in the shape of a square plate, and upper, lower, front and rear bent pieces 6b-6e, 7b-7e that are bent inwardly in the left-right direction from the four peripheral edges. The rear (opening side) bent piece 6e, 7e, which is on the rear side in the front-to-rear direction (the opening E side), is used to attach the brackets 6, 7 to a vertical support 9, which is an example of a body side member.

In addition, first to fourth reinforcing members (reinforcing frames) 10, 11, 12, 13 are provided in a bridging manner between the upper and lower end edges of the front folded pieces 6d, 7d, between the upper portions of the rear folded pieces 6e, 7e, and between the rear portions of the lower folded pieces 6c, 7c of the brackets 6, 7, and each of these reinforcing members 10, 11, 12, 13 is attached to the corresponding folded pieces 6b to 6e, 7b to 7e via a screw 14a.
Furthermore, in this embodiment, the upper and front case plates 14b and the lower case plate 14c are assembled to the first to fourth reinforcing members 10, 11, 12, and 13, thereby forming the shutter case 14. In this case, the fastening of these case plates 14b and 14c to the first, second, and fourth reinforcing members 10, 11, and 13 is performed using screws 14d, but the third reinforcing member 12 is also fixed to the horizontal support 9a, which is a body side member, and the fastening of the third reinforcing member 12 and the third reinforcing member 12 and the upper case plate 14b to the horizontal support 9a is performed using screws (coarse thread) 14e when the horizontal support 9a is made of wood as shown in Figures 2 to 5, but is performed using screws 14d when the horizontal support 9a is made of steel as shown in Figures 6 and 7.

The configuration for attaching the rear folded piece 6e (corresponding to the "opening side folded piece" of the present invention) to the vertical support 9 and the configuration for attaching the fourth reinforcing member 13 to the lower folded piece 6c will be described in detail later.
Incidentally, the opening/closing machine 8 is mounted on the driving side bracket 6, and furthermore, a driven sprocket 15 is arranged on the driving side bracket 6 side, which is interlockingly connected to the driving sprocket 8a provided on the opening/closing machine 8 via an endless transmission chain 8b. The driven sprocket 15 and the winding body 5 are connected in a state in which they rotate together, and this connected one is rotatably supported on a support shaft portion 5a which is integrally provided on the bracket main body 6a, whereby the winding body 5 is rotatably supported on the bracket 6 so as to rotate forward and reverse based on the drive of the opening/closing machine 8.
In this case, when the driving side bracket 6 is used, for example, for a shutter curtain 4 with a large amount of winding (a shutter curtain 4 with a long vertical length or a large horizontal width), the load on the opening/closing mechanism 8 becomes large, and therefore, in order to reduce the load, the driven sprocket 15a may be made larger in diameter; this is shown as the second embodiment in Figure 20 and will be described later.

In the left and right brackets 6, 7 thus constructed, guide pieces 2c, 3c which are formed so as to widen towards the upper end on the upper edge of the guide rails 2, 3 are fitted into the lower portion of the rear bent pieces 6e, 7e, and below the guide pieces 2c, 3c are formed bulging portions 17, 18 of the following two specifications to accommodate the seat plate 4a provided at the lowest end of the shutter curtain 4 when it is fully open.
In this case, one of the shims 17 has a ceiling board 19 provided below the lower case board 14c and is of an in-ceiling installation type (lower type) formed between the ceiling board 19 and the shutter case 14, while the other shim part 18 has no ceiling board 19, the shutter case 14 is exposed and can be directly seen from the outside, and is of an exposed installation type (upper type) formed above the lower case board 14c; hereinafter, the shim parts 17, 18 of these specifications will be distinguished by being referred to as the "in-ceiling shim part 17" and the "exposed shim part 18".

In the case of the in-ceiling installation specification equipped with the in-ceiling foldable portion 17, as shown in Figures 2, 4 and 6, the in-ceiling foldable portion 17 is formed below the lower folded piece 6c, that is, between the lower case plate 14c of the shutter case 14 and the ceiling plate 19 below the lower case plate 14c, and when the shutter curtain 4 is in the fully open position, the seat plate 4a is swallowed (housed, fits in) into the lower foldable space Sd formed by the in-ceiling foldable portion 17 arranged below the lower folded piece 6c, and in this swallowed state, the lower edge of the seat plate 4a is configured to be approximately flush with the ceiling plate 19.
In contrast, in the case of an exposed installation specification equipped with an exposed magus 18, as shown in Figures 3, 5 and 7, there is no ceiling panel 19 and the shutter case 14 is exposed to the outside, and the exposed magus part 18 is formed inside the shutter case 14 above the lower folded piece 6c. As a result, when the shutter curtain 4 is in the fully open position, the seat plate 4a is swallowed (housed, fits in) into the upper magus space Su arranged above the lower folded piece 6c, and in this swallowed state, the lower edge of the seat plate 4a is configured to be approximately flush with the lower case plate 14c.

When the specifications are set to be different in this way between the exposed installation specification with the exposed magus part 18 and the in-ceiling installation specification with the in-ceiling magus part 17, the part where the seat plate 4a fits (is swallowed) in the fully open position of the shutter curtain 4 will be either the upper magus space Su or the lower magus space Sd, with the lower case plate 14c as the reference point. Due to this difference, the guide pieces 2c, 3c formed in an expanded shape on the upper edge of the guide rail 2 will also be positioned differently in the vertical direction relative to the lower case plate 14c (lower bent piece 6c).

On the other hand, in order to guide the shutter curtain 4 unwound from the winding body 5 onto the guide rails 2, 3 to the guide piece portions 2c, 3c, guide rollers (guide bodies, smoothers) 20 are arranged above both slack portions 17, 18. However, the arrangement of these guide rollers 20 also needs to differ depending on the upper and lower arrangement positions of the guide piece portions 2c, 3c that arise due to the above-mentioned specification differences.
Incidentally, in this embodiment, the guide pieces 2c, 3c are formed so as to expand outward in the front-to-rear and left-to-right directions as they approach the upper side, and the guide roller 20 is arranged at a position further inward in the left-to-right direction than the guide pieces 2c, 3c, and is arranged so as to overlap (at approximately the same height) the guide pieces 2c, 3c at the portion on the winding body 5 side when viewed from the side.

In this embodiment, the guide roller 20 is attached to the fourth reinforcement member 13 via the bracket 20a, but when the specification is to be installed inside the ceiling, as mentioned above, the seat plate 4a will be swallowed up into the lower magus space Sd below (below the shutter case 14) the lower folded piece 6c (lower case plate 14c), and therefore the guide pieces 2c, 3c will also be arranged in a lower position close to the lower folded piece 6c accordingly.
In contrast to this, in the case of the exposed fitting specification, the guide roller 20 is swallowed up in the upper magus space Su formed by the seat plate 4a above the lower folded piece 6c (inside the shutter case 14), and accordingly the guide pieces 2c, 3c are arranged in an upper position spaced away from the lower folded piece 6c.
As a result, the guide rollers 20 also need to be arranged at different positions above and below in accordance with the guide pieces 2c, 3c which are arranged differently above and below.
Incidentally, the fourth reinforcing member 13 in this embodiment has a rectangular tubular shape with upper and lower side portions 13a, 13b and front and rear side portions 13c, 13d.

Therefore, in this embodiment, when the guide roller 20 is to be installed in a ceiling-mounted installation, the bracket 20a is attached to the rear side portion 13d facing the guide rails 2, 3 of the fourth reinforcement 13, so that the guide roller 20 is arranged to face the guide piece portions 2c, 3c in a lower portion between the guide rail and the fourth reinforcement 13, and when the guide roller 20 is to be installed in an exposed installation, the bracket 20a is attached to the upper side portion 13a of the fourth reinforcement 13, so that the guide roller 20 is arranged to face the guide piece portions 2c, 3c in an upper portion on the upper side of the fourth reinforcement 13.
In order to accommodate both the in-ceiling installation specification and the exposed installation specification, the attachment position of the guide roller 20 relative to the fourth reinforcement 13 is different; however, the fore-to-aft arrangement position of the guide roller 20 relative to the guide piece portions 2c, 3c must be the same. As a result, it becomes necessary to arrange the fourth reinforcement 13 in a different position relative to the guide rails 2, 3. For this reason, the lower side portion 13b of the fourth reinforcement 13 is set up so that its fore-to-aft position can be freely adjusted relative to the lower folded piece portions 6c, 7c to accommodate the two types of specifications.
Specifically, mounting holes (pre-drilled holes) 6f, 6g, 7f, 7g for screws 14a, which are fastening devices for attaching the lower side portion 13b of the fourth reinforcement member 13, are pre-drilled in the lower folded piece portions 6c, 7c at the factory, and the mounting holes 6f, 6g, 7f, 7g are arranged in two sets of mounting hole groups to accommodate the two specifications mentioned above.
Incidentally, when the mounting holes 6f, 6g, 7f, 7g are provided in pairs, if all of them are in different positions, four need to be provided, but if one is common to all of them, it is also possible to make the number three and make the central hole common.

Furthermore, since the fourth reinforcing member 13 is provided on each of the magma portions 17, 18 and supports the load of the shutter curtain 4, it is required to have a reinforced structure.For this reason, in this embodiment, the fourth reinforcing member 13 is connected to the bracket main body portion 6a via a connecting metal fitting 21.
The connecting fitting 21 used in this case is composed of an inverted L-shaped base 21a consisting of an upper piece 21b and a front piece 21c that abut against the upper side portion 13a and front side portion 13c of the fourth reinforcement 13, and a connecting piece 21d that is long in the front-to-rear direction and extends upward from the upper piece 21b of the base 21a, and the connecting fitting 21 is fixed to the front side portion 13c of the fourth reinforcement by inserting (screwing) a screw 21e, which serves as a fastening device, in the front-to-rear direction into the front piece 21c.

Furthermore, a mounting hole 21f is formed in the connecting piece portion 21d of the connecting fitting 21, and the connecting piece portion 21d and the bracket main body portions 6a, 7a are fixed via a bolt 21g inserted into the mounting hole 21f. In this case, as described above, the mounting position of the fourth reinforcement member 13 relative to the bracket 6 differs in the front-to-rear direction in the cases of in-ceiling installation and exposed installation. For this reason, the mounting hole 21f formed in the connecting piece portion 21d is an elongated hole that is long in the front-to-rear direction, and the insertion position of the bolt 21g relative to the mounting hole 21f can be moved in the front-to-rear direction to accommodate the fact that the mounting position of the fourth reinforcement member 13 relative to the bracket main body portions 6a, 7a differs in the front-to-rear direction.

In this manner, the connecting piece portion 21d of the connecting fitting 21 is fixed to the bracket main body portion 6a via the bolt 21g. However, there may be cases where the gap between the bracket main body portion 6a and the opposing body side member is so small that it is difficult to insert a tool such as a wrench. Taking this into consideration, in this embodiment, the bolt 21g is a square root bolt 21g in which the bolt head portion of the threaded portion has a square column shape, and a square bolt hole (not shown) corresponding to the square column portion of the square root bolt 21g is formed in the bracket main body portion 6a. The square root bolt 21g is inserted into the bolt hole of the bracket main body portion 6a from the outside in the left-right direction and assembled in a non-rotating state. In this state, a nut 21h is screwed into the threaded portion of the square root bolt 21g protruding inward in the left-right direction of the bracket main body portion 6a, so that the square root bolt 21g can be fastened in a non-rotating state.
Incidentally, if the connecting fitting 21 of this embodiment is only required to accommodate the two specifications mentioned above, it is sufficient for it to be of a length corresponding to the position of the square root bolt 21g which relatively displaces the connecting piece portion 21d. However, the connecting fitting 21 of this embodiment is also capable of accommodating specifications which are even different from those mentioned above, such as those in which the slats which make up the shutter curtain are cylindrical (hollow) or those which are pipe shutters.
If necessary, the upper piece portion 21b of the connecting fitting 21 and the upper side surface portion 13a of the fourth reinforcing member 13 may be fastened together by a fastener such as a screw.

Next, the difference between the shallow and deep groove guide rails 2 and 3 will be explained. The shallow groove guide rail 2 is used when the shutter curtain 4 has a narrow width and is less likely to bend when it is hit by a strong wind, and is set to a width of 60 mm, for example. The deep groove guide rail 3 is used when the shutter curtain 4 has a wide width and is more likely to bend when it is hit by a strong wind, and is set to a width of 90 mm, for example. In this embodiment, two types of guide rails 2 and 3 are prepared to correspond to the width of the shutter curtain 4, and when these guide rails 2 and 3 are attached to the main body, the protruding width (projection width) Y of the opening pieces 2a and 3a of the guide rails 2 and 3 from the vertical support 9 is made the same (unified). As a result, the positions of the groove bottom pieces 2b and 3b of the guide rails 2 and 3 are arranged in positions that are shifted left and right relative to the vertical support 9, and the mounting positions of the brackets 6 and 7 relative to the vertical support 9 are also shifted left and right accordingly.

Therefore, the brackets 6, 7 are connected to the vertical support 9 via fasteners, and the rear bent pieces 6e, 7e are drilled with mounting holes for the fasteners in advance at the factory. In this case, if the vertical support 9 is made of steel, the vertical support 9 is strong, so there is no problem with the vertical support 9 cracking even if the fastening part is the end part of the vertical support 9. Therefore, when the vertical support 9 is made of steel, thin-diameter screws 22 are used as fasteners, and the rear bent pieces 6e, 7e are drilled with two rows of thin-diameter mounting holes 6h, 7h in the front and rear, without being bound by changes in the mounting positions of the two types of guide rails 2, 3 relative to the vertical support 9.

On the other hand, if the vertical support 9 is made of wood, there is a risk that the vertical support 9 will crack at the fastening point if it is located at the end of the vertical support 9. For this reason, the fastening position of the vertical support 9 needs to be as close to the center as possible in the left-right direction.
Therefore, when the vertical support 9 is made of wood, the fastening points are arranged in a row at the central part of the vertical support 9 in the left-right direction to prevent the vertical support 9 from accidentally cracking. However, since the fastening points are arranged in a row, it is difficult to ensure the mounting strength by using the thin-diameter fasteners, screws 22, as in the case of steel, so thick-diameter fasteners 23, 24 are used.
In this case, when attempting to standardize (constantly) the arrangement positions of the groove opening pieces 2a, 3a relative to the vertical support 9 of the shallow groove and deep groove guide rails 2, 3, as described above, the arrangement positions of the groove bottom pieces 2b, 3b differ in the left-right direction, and therefore the attachment positions of the rear bent pieces 6e, 7e to the vertical support 9 also change left-right. For this reason, two rows of attachment holes 6i, 7i, 6j, 7j are drilled on the left and right in response to this.
The outer mounting holes 6i, 7i in the left-right direction are for attaching the rear folded pieces 6e, 7e to the vertical support 9 when a shallow groove guide rail 2 is used, and the inner mounting holes 6j, 7j are for attaching the rear folded pieces 6e, 7e to the vertical support 9 when a deep groove guide rail 3 is used.
Incidentally, when the vertical support 9 is made of wood, the fasteners used are either a screw (coach screw) 23 or a through bolt 24, both of which have a large diameter. However, in the case of a through bolt 24, it is not necessary to insert it into all of the mounting holes 6i, 7i or 6j, 7j in the corresponding row, and in this embodiment, there is no through bolt 24 in the vertical center.

In the present embodiment configured as described above, the brackets 6, 7 supporting both left and right end edges of the winding body 5 on which the shutter curtain 4 is wound are provided with bracket main body portions 6a, 7a on which the winding body 5 is supported, and lower bent pieces 6c, 7c which are bent from the lower end edges of the bracket main body portions 6a, 7a and to which a fourth reinforcing member 13 supported between the left and right brackets 6, 7 is attached via screws 14a. In this case, the fourth reinforcing member 13 is configured to be attached so that its position in the front-to-back direction can be freely adjusted relative to the lower bent pieces 6c, 7c. As a result, when the position of the bottommost seat plate 4a of the shutter curtain 4 in the fully open state differs between the exposed fitting specification in which it fits into the magus space Su above the lower bent pieces 6c, 7c, and the ceiling fitting specification in which it fits into the magus space Sd below, the fourth reinforcing member 13 corresponding to such specifications can be attached.
In this case, multiple sets of mounting holes 6f, 6g, 7f, 7g are drilled in the lower folded pieces 6c, 7c corresponding to the mounting positions of the fourth reinforcement material 13, so that the fourth reinforcement material 13 can be easily mounted with high accuracy and with free adjustment of its position in the fore-and-aft direction.

In this case, the fourth reinforcement member 13 is fastened from below to the lower side surface portion 13b via the lower folded pieces 6c, 7c via screws 14a, and is further connected to the bracket main body portions 6a, 7a via connecting fittings 21. In this case, the upper piece 21b and front piece 21c of the connecting base 21a formed in the connecting fitting 21 abut against the upper side surface portion 13a and front side surface portion 13c of the fourth reinforcement member 13, and the front piece 21c is fastened via screws 21e inserted in the fore-and-aft direction. As a result, the fourth reinforcement member 13 is firmly attached to the brackets 6, 7 by being fastened from the fore-and-aft and up-and-down directions.
Furthermore, when fastening the connecting fitting 21 to the bracket main body portions 6a, 7a, a square root bolt 21g, which has a square column-shaped bolt head portion of the threaded portion, is used as the fastening device, and the square root bolt 21g is inserted in a non-rotating manner into a square mounting hole provided in the bracket main body portions 6a, 7a. As a result, secure fastening can be achieved even in places where the bracket main body portions 6a, 7a are close to a wall or other structural component and the bolt 21g cannot be supported to prevent rotation with a tool such as a wrench.

Of course, the present invention is not limited to the above embodiment, but as described above, if the shutter curtain 4 is wide in width or long in height as a product of the same series, the driving load applied to the opening and closing mechanism 8 may increase, which may hinder smooth opening and closing of the shutter curtain 2 or 3. One method to solve this problem is to make the driven sprocket 15a larger in diameter than that of the above embodiment in order to reduce the load on the opening and closing mechanism 8, but in this case, the driving side bearing portion 15 will become larger. As a result, when the mounting holes 6h, 7h, 6i, 7i, 6j, and 7j are provided, the larger driving side bearing portion 15 will interfere with the mounting holes, specifically, as shown in the second embodiment in Figures 20 and 21, the mounting holes 6ha and 6ia in the vertical center of the three mounting holes 6h and 6i on the left and right outer sides formed in the driving side bracket 6 are biased inward in the left and right direction so as not to be interfered with by the driving side bearing portion 15. This configuration also allows the present invention to be implemented.

The present invention can be used as a shutter device for a building that is attached to an opening such as an entrance or exit of a building such as a building or a house.

LIST OF SYMBOLS 1 Shutter device 2 Shallow groove guide rail 2a Opening piece 2b Groove bottom piece 2c Guide piece 3 Deep groove guide rail 3a Opening piece 3b Groove bottom piece 3c Guide piece 4 Shutter curtain 4a Seat plate 5 Winding body 6 Driving side bracket 6a Bracket main body 6c Lower bent piece 6e Rear bent piece 6f, 6g Mounting holes 6i, 6j Mounting holes 7 Driven side bracket 9 Vertical support 13 Fourth reinforcement 17 Ceiling inner shim 18 Exposed shim 19 Ceiling plate 20 Guide roller 21 Connecting fitting 21a Base 21d Connecting piece 21e Screw 21f Mounting hole 21g Square root bolt E Opening Sd Lower shim space Su Upper shim space X Guide groove

Claims (4)

Guide rails are installed on the left and right sides of the building opening to guide the shutter curtain up and down to open and close the opening;
a winding body disposed above and in front of the opening and around which the shutter curtain is wound;
Left and right brackets are attached to a body side member in a state in which the left and right end edges of the winding body are supported ;
a guide piece portion that is incorporated in the bracket and is formed on an upper end edge of the guide rail so as to expand outward in the front-rear direction;
A magus space is formed below the guide piece and accommodates the seat plate of the bottom end of the shutter curtain when it is fully opened.
a guide roller disposed in front of the guide piece portion and configured to guide the shutter curtain unwound from the winding body to the guide piece portion;
The bracket is configured to include a bracket body portion on which the winding body is supported and a lower bent piece portion bent from a lower end edge portion of the bracket body portion,
In a shutter device for a building in which two specifications are set, an upper specification in which the magus space is an upper magus space above the lower bent piece portion, and a lower specification in which the magus space is a lower magus space below the lower bent piece portion ,
The lower side of a reinforcing material having a rectangular tube shape is attached to the lower bent piece, and the reinforcing material is supported by connecting metal fittings on the left and right bracket main bodies.
The guide roller is attached to the reinforcing material,
The mounting position of the reinforcing material is configured so that the upper type is mounted at a rear mounting position closer to the guide rail than the lower type,
The guide roller is attached to the upper side of the reinforcement material in the upper specification, and to the rear side of the reinforcement material in the lower specification, so that the upper specification is attached at a higher height relative to the reinforcement material than the lower specification.
This shutter device for buildings is characterized in that the reinforcing material is attached to the lower bent piece and the guide rail main body in a manner that allows for free adjustment of the front-to-rear position so that the upper specification is attached at a rear mounting position closer to the guide rail than the lower specification, and the front-to-rear arrangement position of the guide roller relative to the guide piece is the same for either specification . The building shutter device according to claim 1, characterized in that the lower bent piece has multiple sets of mounting holes drilled therein corresponding to the mounting positions of the reinforcing material. the connecting fitting is configured to include a connecting base portion having an upper piece portion and a front piece portion that abut the upper side surface portion and the front side surface portion, and a connecting piece portion that extends upward from the upper piece portion and is connected to the bracket main body portion,
3. A shutter device for a building according to claim 1 or 2 , characterized in that the front piece is fastened to the front side portion via a fastening material inserted in the front-to-rear direction. The shutter device for buildings described in claim 3, characterized in that the connecting piece is connected to the bracket main body by fastening using a square root bolt having a square column-shaped bolt head portion of the screw portion, and the square root bolt is inserted in a non-rotating manner into a square -shaped mounting hole provided in the bracket main body.

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