JP2016069940A - Opening prevention structure of shutter curtain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening prevention structure of a shutter curtain, capable of improving crime prevention performance of a shutter by preventing opening of a part of an opening part, and capable of improving installation workability of bending restraint means.SOLUTION: An opening prevention structure of a shutter curtain 20 is provided with a bending restraint part 50 for restraining bending of the shutter curtain 20 on an inner surface of an opposed side part 11 of a shutter storage part 10, and the bending restraint part 50 comprises an abutting part for abutting on the shutter curtain 20 when the shutter curtain 20 bends by a predetermined quantity or more and a support part 60 for supporting the abutting part, and the opposed side part 11 is formed with a first installation hole for inserting a fixture, and the support part 60 is formed with a second installation hole for inserting the fixture, in a position corresponding to the first installation hole of the opposed side part 60, in a state of arranging the support part 60 in contact with an inner surface of the opposed side part 11, for installing the bending restraint part 50 to the opposed side part 11 via the fixture.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a shutter curtain opening prevention structure.

  2. Description of the Related Art Conventionally, an electric lightweight shutter that prevents a person from entering a building by opening an opening provided in various buildings in a fully closed state has been widespread. For example, such a conventional lightweight shutter is a shutter storage unit provided above an opening, and includes a shutter storage unit that stores a shutter curtain, and a shutter storage unit that is stored inside the shutter storage unit and wound around the shutter curtain. A winding wheel that performs winding and unwinding, and an opening / closing device that is housed in a shutter housing portion and rotationally drives the winding wheel (see, for example, Patent Document 1).

JP-A-7-208047

  However, in the above-described conventional lightweight shutter, when an external force is applied to the shutter curtain in the direction from the opening toward the shutter storage portion with the opening fully closed by the shutter curtain, the shutter The upper part of the curtain is bent inside the shutter housing portion, and the shutter curtain is lifted as it is bent. When the shutter curtain is lifted in this way, a gap is generated between the lower end portion of the shutter curtain and the floor surface, so that a part of the opening portion is opened, and this opening portion is interposed. There was a possibility of allowing people to enter the building.

  Here, in order to solve such a problem, the inventor of the present application mechanically prevents further bending of the shutter curtain when the shutter curtain is bent by a predetermined amount or more by applying an external force. It has been conceived that a simple bending suppressing means is provided in the shutter housing portion. However, in order to effectively prevent the bending of the shutter curtain using such a bending suppression means, it is necessary to accurately attach the bending suppression means at a predetermined position, which increases the burden on the installation work of the shutter. A new problem arises. In particular, when the structure for attaching the bending restraining means to the shutter housing part is completely separated from the structure for attaching the shutter housing part to the building, the installation work related to the shutter housing part becomes complicated as a whole, and the installation of the shutter A new problem arises that the work burden is further increased.

  The present invention is for solving the above-described problems in the prior art, and it is possible to improve the security performance of the shutter by preventing a part of the opening from being opened. An object of the present invention is to provide a shutter curtain opening prevention structure that can improve the installation workability of a simple bending suppressing means.

  In order to solve the above-described problems and achieve the object, the shutter curtain opening prevention structure according to claim 1 is housed in a wound state in a shutter housing portion provided in the vicinity of the opening of the building. A shutter curtain that is unwound from the shutter housing portion and closes the opening portion when an external force is applied in a direction from the opening portion toward the shutter housing portion. An opening prevention structure for preventing the opening from being opened along with the bending by suppressing the shutter curtain from bending inside the shutter housing, the shutter housing Among the side portions, the bend suppressing hand for suppressing the bend of the shutter curtain is provided on the inner surface of the facing side portion that is the side portion facing the building. And the bending suppression means includes a contact portion that contacts the shutter curtain when the shutter curtain is bent by a predetermined amount or more by applying the external force, and a support portion for supporting the contact portion. A first attachment hole is formed in the opposite side portion of the shutter storage portion for inserting a fixture for attaching the opposite side portion to the building, and the support portion of the bending suppression means In order to attach the bending suppression means to the opposing side portion via the fixture, a second attachment hole through which the fixture is inserted is brought into contact with the inner surface of the opposing side portion. In the arranged state, it is formed at a position corresponding to the first mounting hole on the opposite side portion.

  The shutter curtain opening prevention structure according to claim 2 is the shutter curtain opening prevention structure according to claim 1, wherein the opposite side portion of the shutter storage portion includes a first opposite side portion and the first opposite side portion. A second opposing side portion disposed at a position different from the one opposing side portion, wherein each of the first opposing side portion and the second opposing side portion is formed with the first mounting hole and the bent A pair of the contact portions and a pair of second mounting holes are formed in the support portion of the suppressing means, and one second mounting hole and the first opposing side of the pair of second mounting holes. When the bending suppressing means is fixed to the first opposing side portion with the fixture inserted through the first attachment hole of the portion, the other contact of the pair of contact portions The contact portion can contact the shutter curtain, and the other of the pair of second mounting holes. When the bending restraining means is fixed to the second opposing side portion with the fixture inserted through the second mounting hole and the first mounting hole of the second opposing side portion, the pair The one abutting portion of the abutting portions can be abutted on the shutter curtain.

  Further, the shutter curtain opening prevention structure according to claim 3 is the shutter curtain opening prevention structure according to claim 1 or 2, for any of the plurality of shutter storage portions having different shapes. The second mounting hole is formed so as to be disposed at a position corresponding to the first mounting hole of the facing side portion in a state where the support portion is in contact with the inner surface of the facing side portion.

  The shutter curtain opening prevention structure according to claim 4 is the shutter curtain opening prevention structure according to any one of claims 1 to 3, wherein the opening is opposed to each other in the shutter curtain. A guide rail for guiding each of the pair of end portions is provided along the opening / closing direction of the opening, and the abutting portion of the bending suppressing means is disposed closer to the center of the shutter curtain than the guide rail. ing.

  The shutter curtain opening prevention structure according to claim 5 is the shutter curtain opening prevention structure according to any one of claims 1 to 4, wherein the shutter curtain opening prevention structure includes a side surface of the contact portion of the bending suppressing means. The entire side surface facing the shutter curtain is formed as an inclined surface substantially along the outer edge tangent of the portion close to the contact portion of the shutter curtain housed in the shutter housing portion in a wound state. doing.

  According to the shutter curtain opening prevention structure according to claim 1, the bending suppressing means includes a contact portion that contacts the shutter curtain when the shutter curtain is bent by a predetermined amount or more by applying an external force, Since the opening is fully closed by the shutter curtain, an external force is applied to the shutter curtain in the direction from the opening toward the shutter storage portion. Even if the shutter curtain is bent, it is possible to prevent the shutter curtain from being bent by a predetermined amount or more, so that it is possible to prevent the opening from being opened as the shutter curtain is bent. Therefore, compared with the prior art, the possibility of a person entering the building can be further reduced, so that the crime prevention performance of the shutter can be improved. In addition, a first attachment hole is formed in the opposite side portion of the shutter storage portion for inserting a fixture for attaching the opposite side portion to the building, and the bending suppression means is provided in the support portion of the bending suppression means. In order to attach the second attachment hole through which the fixture is inserted to the opposite side portion via the fixture, the first of the opposite side portion is arranged in a state where the support portion is in contact with the inner surface of the opposite side portion. Since it is formed at a position corresponding to the mounting hole, when the bending suppression means is attached to the opposite side portion, the bending suppression means can be easily positioned by the second mounting hole formed in the support portion. Since the shutter storage portion and the bending suppression means can be attached simultaneously in a common operation, it is possible to improve the installation workability of the bending suppression means.

  According to the shutter curtain opening prevention structure according to claim 2, the fixture is inserted through one of the pair of second mounting holes and the first mounting hole of the first opposing side portion. In the state, when the bending suppressing means is fixed to the first opposing side portion, the other abutting portion of the pair of abutting portions can be brought into contact with the shutter curtain, When the bending restraining means is fixed to the second opposing side portion with the fixture inserted through the other second mounting hole and the first mounting hole of the second opposing side portion, Since one of the contact portions can be brought into contact with the shutter curtain, the bending suppressing means is connected to the first facing side portion via the first mounting hole formed in the first facing side portion or the second facing side portion. Or it can fix to the said 2nd opposing side part, and can suppress the bending of a shutter curtain by a bending suppression means. Because, it is possible to enhance the versatility of the bending suppressing means.

  According to the shutter curtain opening prevention structure according to claim 3, with respect to any of the plurality of shutter storage portions having different shapes, the facing portion is arranged in a state where the support portion is in contact with the inner surface of the opposite side portion. Since the second mounting hole is formed so as to be arranged at a position corresponding to the first mounting hole on the side portion, the first mounting hole formed on the opposite side portion of the plurality of shutter housing portions having different shapes is provided. Since the bending suppression means can be fixed to the opposite side portion and the bending of the shutter curtain can be suppressed by the bending suppression means, the versatility of the bending suppression means can be further enhanced.

  According to the shutter curtain opening prevention structure of the fourth aspect, since the contact portion of the bending suppressing means is disposed on the center side of the shutter curtain with respect to the guide rail, the shutter curtain may be swung or offset for some reason. Even in such a case, the abutting portion can be surely brought into contact with the shutter curtain, so that the bending of the shutter curtain can be more reliably suppressed.

  According to the shutter curtain opening prevention structure of the fifth aspect, the entire side surface facing the shutter curtain among the side surfaces of the contact portion of the bending suppressing means is accommodated in a wound state inside the shutter accommodating portion. Since the shutter curtain is formed as an inclined surface substantially along the outer edge tangent of the portion adjacent to the contact portion, the contact portion can be reliably avoided from contacting the shutter curtain. Stability can be maintained.

It is a figure which shows the shutter which concerns on embodiment of this invention, (a) is a front view, (b) is a top view, (c) is a side view. It is AA arrow sectional drawing of the shutter of Fig.1 (a). FIG. 2 is an enlarged view of a predetermined area of the shutter in FIG. 1, (a) is an enlarged view of a main part of an area B in FIG. 1 (a), (b) is an enlarged view of an essential part of an area C in FIG. c) is an enlarged view of a region D in FIG. It is a figure which shows a bending | flexion suppression part, (a) is a front view, (b) is a side view. It is sectional drawing corresponding to FIG. 2, Comprising: It is sectional drawing which shows the state in which the shutter curtain is bent. It is a figure which shows the modification of a bending suppression part, (a) is a front view, (b) is a side view.

  Embodiments of a shutter curtain opening prevention structure according to the present invention will be described below in detail with reference to the accompanying drawings. First, [I] the basic concept of the embodiment will be described, then [II] the specific content of the embodiment will be described, and finally, [III] a modification to the embodiment will be described. However, the present invention is not limited to the embodiments.

[I] Basic Concept of Embodiment First, the basic concept of the embodiment will be described. In the embodiment, the shutter curtain housed in a wound state inside the shutter housing portion provided in the vicinity of the opening portion of the building is directed toward the direction from the opening portion to the shutter housing portion. The shutter curtain opening prevention structure that prevents the opening of the shutter curtain from opening due to the bending by suppressing the bending of the shutter curtain inside the shutter housing portion when an external force is applied. Is.

  Here, the “building” may have any specific structure and type, but includes a concept including a detached house, an apartment house such as an apartment or an apartment, an office building, a commercial facility, and a public facility, for example. . Further, the “building opening” is an opening formed to install a window or an entrance in a part of the building frame (for example, a wall, a ceiling, or a floor). The “shutter” is a winding door that is attached to an opening of a building for crime prevention or disaster prevention, and has a concept including, for example, a lightweight shutter, a window shutter, and a pipe shutter. The shutter opening / closing structure is arbitrary, and can be configured as, for example, a “upper / lower opening / closing shutter” or a “left / right opening / closing shutter”. “Wound state” means winding the shutter curtain. The “external force” is a force that acts on the shutter curtain from the outside, and includes, for example, not only artificially applied force but also force applied by nature such as wind. “Bending” means that the shutter curtain bends in a dogleg shape or a curved shape. “Open” means a state in which the opening is left open. Hereinafter, in the embodiment, a case will be described in which the shutter is a lightweight electric shutter that can be opened and closed in an up-down direction and is disposed at an entrance / exit of a garage of a building such as a detached house.

[II] Specific Contents of Embodiment Next, specific contents of the embodiment will be described.

(Constitution)
First, a configuration of a shutter to which the shutter curtain opening prevention structure according to the embodiment is applied will be described. FIG. 1 is a view showing a shutter 1 according to an embodiment of the present invention, in which (a) is a front view, (b) is a plan view, and (c) is a side view. In FIG. 1A, a shutter housing portion 10 described later is partially cut away, and in FIG. 1C, a part of the shutter storage portion 10 described later is omitted. FIG. 2 is a cross-sectional view of the shutter 1 of FIG. In the following description, the X direction in FIG. 1 is the left-right direction of the shutter 1 (the −X direction is the left direction of the shutter 1, the + X direction is the right direction of the shutter 1), and the Y direction in FIG. (The + Y direction is the forward direction of the shutter 1 (the direction outside the building), the −Y direction is the backward direction of the shutter 1 (the direction inside the building)), and the Z direction in FIG. The upward direction of the shutter 1 and the −Z direction are referred to as the downward direction of the shutter 1).

  In FIG. 1, two shutters 1 are connected along the left-right direction. Each shutter 1 is generally configured to include a shutter storage unit 10, a guide rail 15, a shutter curtain 20, and an opening / closing device 30. However, about the structure which does not mention especially regarding these each shutter 1, description is abbreviate | omitted as it is the same as that of the past.

(Configuration-shutter storage)
The shutter storage unit 10 is a hollow body for storing each part of the shutter 1, and is attached to a position near the upper end of the opening 2 in the building. Inside the shutter storage unit 10, an opening / closing machine 30, a winding shaft 40, and a guide unit 16 of a guide rail 15 described later are stored. Further, in a state where the shutter curtain 20 is wound around the winding shaft 40, the shutter curtain 20 is also accommodated in the shutter accommodating portion 10 (in FIG. 2, in a state where the opening 2 is fully opened). The outer edge of the shutter curtain 20 wound around the winding shaft 40 is indicated by a two-dot chain line). The shutter storage unit 10 can be formed, for example, by connecting a plurality of bent plate members made of steel to each other with an attachment such as an attachment screw. A pair of front and rear lintels 14 are fixed to the lower side of the shutter storage unit 10. Between the pair of lintels 14, a lintel opening over the entire length in the left-right direction of the opening 2 is formed, and the shutter curtain 20 is taken in and out through the lintel opening.

  The shutter storage unit 10 configured as described above is fixed to the building using a fixture (for example, a screw or an anchor bolt). Specifically, as shown in FIGS. 1A and 3A, the left and right side portions of the side portion of the shutter storage portion 10 are opposed to the building from the respective side portions. An extended side portion 11 (hereinafter referred to as “opposite side portion 11”) is formed (to be along the outer surface of the building), and the shutter storage portion 10 is located with respect to the building via the opposite side portion 11. Is fixed.

  More specifically, of the two shutters 1 shown in FIG. 1, the shutter storage portion 10 of the right shutter 1 has a substantially rectangular plate-like opposing side portion protruding from the left side portion. 11a (hereinafter, referred to as “first opposing side portion 11a”) is an opposing side portion 11b provided at a position different from the first opposing side portion 11a, and is protruded from the right side portion thereof. A total of two opposing side portions 11 including a substantially rectangular plate-like opposing side portion 11b (hereinafter referred to as “second opposing side portion 11b”) are provided. And the 1st attachment hole 12 is formed in each of these 1st opposing side parts 11a and the 2nd opposing side parts 11b. This 1st attachment hole 12 is a through-hole for inserting the fixture (for example, screw, an anchor bolt, etc.) for attaching the 1st opposing side part 11a and the 2nd opposing side part 11b with respect to a building. The shutter accommodating portion 10 in the right shutter 1 is fixed to the building via a fixture inserted through the first attachment hole 12 in each of the first opposing side portion 11a and the second opposing side portion 11b. ing. In addition, although the specific shape and arrangement | positioning of these 1st opposing side parts 11a, the 2nd opposing side part 11b, and the 1st attachment hole 12 are arbitrary, in embodiment, the center of the left-right direction of the shutter accommodating part 10 is provided. The shape and arrangement are symmetrical with respect to the axis.

  On the other hand, the shutter storage portion 10 of the left shutter 1 shown in FIG. 1 is provided with a substantially rectangular plate-like opposing side portion 11 (ie, “first opposing side portion 11a”) protruding from the left side portion. In addition, the first opposing side portion 11a that protrudes from the left side portion of the shutter storage portion 10 in the right shutter 1 serves as the second opposing side portion 11b of the shutter storage portion 10 in the left shutter 1. (That is, the second opposing side portion 11b of the shutter accommodating portion 10 in the left shutter 1 is also used by the first opposing side portion 11a of the shutter accommodating portion 10 in the right shutter 1). A first mounting hole 12 is formed in the first opposing side portion 11a. And the shutter accommodating part 10 in the left shutter 1 is fixed to the building via a fixture inserted through the first attachment hole 12 in the first opposing side part 11a, and in the vicinity of the right side part. Is fixed to the building via a bend suppressing portion 50 described later.

  These 1st opposing side part 11a and the 2nd opposing side part 11b can be manufactured by arbitrary methods and materials. For example, the first opposing side portion 11a can be formed integrally with the left side portion by bending a part of the left side portion of the side portion of the shutter storage portion 10. Similarly, the second opposing side portion 11b can be formed integrally with the right side portion by bending a part of the right side portion among the side portions of the shutter storage portion 10. The first mounting hole 12 and the auxiliary mounting hole 13 are punched and formed at any time before and after the bending.

  In the embodiment, auxiliary mounting holes 13 are further provided in each of the first facing side portion 11a and the second facing side portion 11b in order to enhance the stability of mounting the shutter storage portion 10 to the building. Yes. The auxiliary mounting hole 13 is a through-hole through which the mounting tool is inserted, and is different from the first mounting hole 12 in each of the first opposing side portion 11a and the second opposing side portion 11b (specifically, , At a position that does not face the support portion 60 of the bending suppression portion 50 to be described later. Then, instead of performing the attachment through the first attachment hole 12, or in addition to performing the attachment through the first attachment hole 12, the fixture inserted through the auxiliary attachment hole 13 is built. It is possible to fix the first facing side portion 11a and the second facing side portion 11b to the building by fastening or placing them on the wall surface.

(Configuration-guide rail)
The guide rail 15 is a long body formed so that a cross-sectional shape by a horizontal cross section is substantially U-shaped, and is disposed at each of left and right ends of the shutter 1 in a direction substantially along the vertical direction. A pair of guide portions 16 for guiding the shutter curtain 20 accommodated in the shutter accommodating portion 10 in the winding direction or the unwinding direction is provided at the upper end portion of the guide rail 15. The pair of guide portions 16 are plate-like bodies formed in a curved shape so as to project outward from the guide rail 15 as they go from the bottom to the top, and are arranged before and after the shutter curtain 20, It is fixed to the first opposing side portion 11a and the second opposing side portion 11b by a fixture or the like. Of the guide rails 15 thus configured, the guide rail 15 adjacent to the wall of the building (specifically, the right guide rail 15 of the right shutter 1 and the left side of the left shutter 1 in FIG. 1). The guide rail 15 is fixed to the outer surface of the building by a known method, and is not adjacent to the wall surface of the building (specifically, the left guide rail 15 of the right shutter 1 in FIG. 1). The right guide rail 15) of the left shutter 1 is fixed to the shutter housing 10 and the floor of the building by a known method at the upper and lower ends thereof.

(Configuration-shutter curtain)
The shutter curtain 20 is wound or unwound by the winding shaft 40 so that the opening 2 is fully opened, the opening 2 is fully closed, or a state between these two states. It is. The shutter curtain 20 includes a plurality of slats 21. Each slat 21 is formed to have a width that is slightly wider than the interval between the left and right guide rails 15 so that the opening 2 can be closed, and fitting portions 22 are provided at both upper and lower ends thereof. It has been. The fitting portions 22 are provided at upper and lower end portions of each slat 21 in order to fit and connect the plurality of slats 21 to each other, and are formed by bending the both end portions. Among the plurality of slats 21, the uppermost slat 21 is
The upper end of the shutter curtain 20 is fixed to the take-up shaft 40 via the suspension base 24, whereby the shutter curtain 20 is fixed to the take-up shaft 40.

  A seat plate 23 is provided at the lowermost part of the shutter curtain 20. The seat plate 23 is disposed so as to be close to or in contact with the floor surface in a state in which the opening 2 is fully closed by the shutter curtain 20. It is formed a little wider. A fitting portion 22 is provided at the upper end portion of the seat plate 23, and the fitting portion 22 is fitted to the fitting portion 22 at the lower end portion of the lowermost slat 21 of the shutter curtain 20. A plate 23 is attached to the shutter curtain 20.

  Both ends in the left-right direction of the shutter curtain 20 configured in this way are inserted into the groove portion of the guide rail 15, so that the groove portion of the guide rail 15 can be slid in the vertical direction, and In the front-rear direction, the guide rail 15 is restricted so as not to drop out.

(Configuration-Switch)
The opening / closing machine 30 is an elevating unit that electrically moves the shutter curtain 20 up and down by rotationally driving the winding shaft 40, and is operated via an operation switch (not shown).

(Configuration-Shutter curtain opening prevention structure)
Next, the opening prevention structure of the shutter curtain 20 will be described in more detail. 3 is an enlarged view of a predetermined area of the shutter 1 in FIG. 1, (a) is an enlarged view of a main part of area B in FIG. 1 (a), and (b) is an essential part of area C in FIG. 1 (a). (C) is an enlarged view of a region D in FIG. 1 (b). In the shutter 1 shown in FIG. 1A, when the opening 2 is fully closed by the shutter curtain 20, the direction toward the shutter storage portion 10 with respect to the shutter curtain 20 (that is, in the embodiment) When an external force (hereinafter simply referred to as “external force”) is applied toward the upper side, the take-up shaft 40 is braked so as not to rotate, so that only the shutter curtain 20 is inside the shutter housing portion 10. The shutter curtain 20 is lifted along with the bending. When the shutter curtain 20 is lifted in this way, a gap is generated between the lower end portion of the shutter curtain 20 and the floor surface, so that a part of the opening 2 is opened. There was a possibility of allowing a person to enter the building through the part. In particular, as shown in FIG. 2, the guide rail 15 is disposed behind the winding shaft 40, so that the portion of the shutter curtain 20 that is housed in the shutter housing portion 10 is obliquely upward and forward. Since it is in a state that reaches the winding shaft 40 in an inclined state, when an external force is applied, it tends to bend obliquely upward and rearward.

(Configuration-Shutter curtain opening prevention structure-Bend suppression part)
Therefore, in order to solve such a problem, the bending suppressing portion 50 is provided in the embodiment. 4A and 4B are diagrams showing the bending suppressing portion 50, where FIG. 4A is a front view and FIG. 4B is a side view. The bend suppressing unit 50 is a bend suppressing unit for suppressing the bend of the shutter curtain 20, and includes a support unit 60 and contact portions 70a and 70b.

(Structure-Shutter curtain opening prevention structure-Bend suppression part-Support part)
The support part 60 supports the contact parts 70a and 70b. The support portion 60 is formed of a substantially rectangular plate-like body, and is arranged so that the rear surface of the support portion 60 abuts against the inner surface of the opposing side portion 11. Here, the “inner surface” means a side surface located on the inner side of the shutter storage portion 10 among the side surfaces of the opposing side portion 11, and in the embodiment, the front surface of the opposing side portion 11 is described as the “inner surface”. To do. The support portion 60 is formed with second mounting holes 61 a and 61 b and a wiring hole 62. Among these, the second attachment holes 61a and 61b are used for inserting the fixture in order to attach the bending suppressing portion 50 to the first opposing side portion 11a or the second opposing side portion 11b via the fixture. It is a through hole. One second mounting hole 61a is disposed at a position corresponding to the first mounting hole 12 of the first opposing side portion 11a in a state in which the support portion 60 is disposed in contact with the inner surface of the first opposing side portion 11a. At the same time, the other second mounting hole 61b is disposed at a position corresponding to the first mounting hole 12 of the second opposing side portion 11b in the state where the support portion 60 is in contact with the inner surface of the second opposing side portion 11b. ing. Accordingly, the first opposing side portion 11a and the second opposing side portion 11b can be obtained by fastening or driving the fixtures sequentially inserted into the second mounting holes 61a and 61b and the first mounting hole 12 on the wall surface of the building. Can be fixed to the building, and at the same time, the bending suppression unit 50 can be fixed to the shutter storage unit 10 and the building, and these can be attached simultaneously in a common operation. Workability can be improved. The wiring hole 62 is a through hole for allowing the wiring 3 extending from the switch 30 to be inserted from the inside of the shutter housing portion 10 to the outside, and is disposed at a position different from the second mounting holes 61a and 61b. Yes.

  Here, the second mounting holes 61a and 61b have a plurality of shutter storage portions 10 (for example, a length in the left-right direction, a length in the front-rear direction, A plurality of shutter storage portions 10 and the like having different lengths in the vertical direction are formed so that a common bending suppression portion 50 can be used. Specifically, for any of the plurality of shutter storage portions 10 having different shapes, the support portion 60 is in contact with the inner surface of the first opposing side portion 11a. The second mounting hole 61 a is formed so as to be disposed at a position corresponding to the first mounting hole 12, and the second support side 60 is in contact with the inner surface of the second opposing side portion 11 b. A second mounting hole 61b is formed so as to be disposed at a position corresponding to the first mounting hole 12 of the facing side portion 11b. In addition, even when the bending suppression unit 50 is attached to any of the plurality of shutter storage units 10 having different shapes from each other, the shutter curtain 20 and the contact unit 70a in each shutter storage unit 10 are provided. These second mounting holes 61a and 61b are formed so that the positional relationship between them and 70b is substantially the same. For example, even in the case of a plurality of shutter storage parts 10 having different shapes, a specific reference position (for example, the first opposing side part 11a and the second opposing side part 11a and the second opposing side part 11b). In the case where the first mounting hole 12 is formed at a position separated by a common predetermined distance from the position of the lower end of each of the facing side portions 11b, the second mounting holes 61a and 61b By determining the position, such a general-purpose structure can be constructed.

  However, among the plurality of shutter storage portions 10 having different shapes from each other, there is a case where the first mounting hole 12 is not formed at a position away from a specific reference position by a common predetermined distance as described above. For such a shutter storage portion 10, the second mounting holes 61a and 61b may not be arranged at positions corresponding to the first mounting holes 12 of the first opposing side portion 11a and the second opposing side portion 11b. There is sex. Therefore, in the embodiment, as shown in FIG. 4A, the first mounting hole 61 a and the first mounting hole 61 are different from the formation positions of the second mounting holes 61 a and 61 b in the support portion 60. A plurality of auxiliary mounting holes 63a and 63b are located at positions corresponding to the first mounting holes 12 formed in each of the opposing side portion 11a and the second opposing side portion 11b with respect to the central axis in the left-right direction of the support portion 60. Are symmetrically formed. Therefore, the bending suppression part 50 can be fixed to a building by fastening or driving a fixture inserted through each of the plurality of auxiliary mounting holes 63a and 63b on the wall surface of the building.

(Structure-Shutter curtain opening prevention structure-Bend suppression part-Contact part)
The contact portions 70a and 70b contact the shutter curtain 20 when an external force is applied upward to the shutter curtain 20 and the shutter curtain 20 is bent by a predetermined amount or more. Here, the “predetermined amount” refers to the shutter curtain when an external force is applied to the shutter curtain 20 in the direction toward the shutter storage unit 10 in a state where the opening 2 is fully closed by the shutter curtain 20. 20 is the amount of bending of the shutter curtain 20 in a state where the shutter curtain 20 is bent inside the shutter storage unit 10, and the shutter in a state where a part of the opening 2 is opened to such an extent that a person cannot enter along with the bending. This means the amount of bending of the curtain 20 and corresponds to about 250 mm, for example. These abutting portions 70a and 70b are inclined with respect to a lower horizontal surface 72 (that is, a lower surface of each of the abutting portions 70a and 70b) and an upper horizontal surface 73 (that is, an upper surface of each of the abutting portions 70a and 70b). The surface 71 as a whole is formed as a plate-like body having a substantially trapezoidal shape (or a triangular shape or the like). The abutting portions 70a and 70b are disposed such that the rear surfaces of the abutting portions 70a and 70b abut against the inner surface of the opposing side portion 11, and the abutting portions 70a and 70b In order to make the inclined surface 71 in each face the shutter curtain 20, it is arranged so as to protrude forward from the left and right ends of the support portion 60.

  Here, in order to further enhance the versatility of the bending suppression portion 50, the contact portions 70a and 70b are arranged so that the bending suppression portion 50 is attached to the first opposing side portion 11a or the second opposing side portion 11b. Yes. Specifically, as shown in FIGS. 3 (a), 3 (b), and 4 (a), a fixture is attached to the second mounting hole 61a and the first mounting hole 12 of the first opposing side portion 11a. When the bending suppressing portion 50 is fixed to the first opposing side portion 11a in the inserted state, the other abutting portion 70a can be brought into contact with the shutter curtain 20. At the same time, when the bending suppressing portion 50 is fixed to the second opposing side portion 11b with the fixture inserted through the second mounting hole 61b and the first mounting hole 12 of the second opposing side portion 11b, One abutment portion 70b can abut against the shutter curtain 20. These abutting portions 70a and 70b are arranged so that the abutting in these two states is possible. More specifically, the contact portions 70a and 70b are arranged symmetrically with respect to each other about the center axis in the left-right direction of the support portion 60 (for example, the contact portion 70a is on the right side of the center axis). The contact portion 70b is disposed on the left side of the central axis).

  Further, in order to further enhance the versatility of the bending suppression part 50, the second mounting holes 61a and 61b are arranged so that the bending suppression part 50 is attached to the first opposing side part 11a or the second opposing side part 11b. Yes. Specifically, the second mounting holes 61a and 61b are arranged symmetrically with respect to each other about the central axis in the horizontal direction of the support portion 60 (for example, the second mounting hole 61a is on the left side of the central axis). And the second mounting hole 61b is arranged on the right side of the central axis). With such an arrangement, the bending suppressing part 50 is connected to the first opposing side part 11a or the second opposing side part via the first mounting hole 12 formed in the first opposing side part 11a or the second opposing side part 11b. Since the bend of the shutter curtain 20 can be suppressed by the bend suppressing portion 50, the versatility of the bend suppressing portion 50 can be further enhanced.

  Further, in order to reliably suppress the bending of the shutter curtain 20, the contact portions 70a and 70b are arranged so that the contact portions 70a and 70b and the shutter curtain 20 can be contacted with certainty. . Specifically, as shown in FIGS. 1B, 3C, and 4A, when the support portion 60 is attached to the first opposing side portion 11a, the contact portion 70a is When the support portion 60 is attached to the second opposing side portion 11b, the contact portion 70b is located closer to the shutter curtain than the guide rail 15. 20 is arranged on the center side. More specifically, the length of the support portion 60 in the left-right direction is set to be longer than the length of the guide rail 15 in the left-right direction, whereby one end of the support portion 60 is connected to the guide rail 15. In the state of being positioned in the vicinity of the outer end portion, the other end portion of the support portion 60 is positioned closer to the center side of the shutter curtain 20 than the guide rail 15, and the contact portion 70 a provided at the other end portion. Alternatively, the contact portion 70 b is positioned on the center side of the shutter curtain 20 with respect to the guide rail 15. With such an arrangement, the contact portions 70a and 70b can be positioned closer to the center of the shutter curtain 20 than the left and right ends of the shutter curtain 20, so that the shutter curtain 20 swings in the left-right direction for some reason. Even in the case where the shutter curtain 20 is offset, the contact portions 70a and 70b can be reliably brought into contact with the shutter curtain 20, so that the bending of the shutter curtain 20 can be further reliably suppressed. .

  Further, in order to effectively suppress the bending of the shutter curtain 20, the contact portions 70a and 70b are arranged at positions where the bending of the shutter curtain 20 is likely to occur. Specifically, as shown in FIG. 2, FIG. 4A, and FIG. 4B, the contact portion 70 a is located at any position from the center position of the winding shaft 40 to the upper end position of the guide portion 16. , 70b (for example, the contact portions 70a, 70b are disposed at a substantially central position in the vertical direction of the support portion 60). In such a position, the shutter curtain 20 is most likely to be bent. Therefore, by arranging the contact portions 70a and 70b in this position, the shutter curtain 20 can be applied at a relatively early timing after the start of the bending. The contact portions 70a and 70b can be brought into contact with each other, and the bending of the shutter curtain 20 can be effectively suppressed.

  Further, in order to maintain the stability of the operation of the shutter curtain 20, these contact portions 70 a and 70 b are formed at positions and shapes that do not contact the shutter curtain 20 in a normal state where no bending occurs. ing. Specifically, as shown in FIGS. 2 and 4B, the inclined surfaces 71 of the contact portions 70 a and 70 b of the shutter curtain 20 accommodated in a wound state inside the shutter storage portion 10. Of these, the contact portions 70a and 70b are formed so as to have an inclined surface substantially along the outer edge tangent of the portion adjacent to the contact portions 70a and 70b. Here, the “outer edge tangent” means the outer edge of the shutter curtain 20 housed in the shutter housing part 10 in a wound state in the state in which the opening 2 is fully opened (that is, the winding indicated by the two-dot chain line in FIG. It means a tangent to the outer edge at a position closest to the arrangement position of the contact portions 70a and 70b among the outer edges of the mounted shutter curtain 20). By forming the abutting portions 70a and 70b so as to have the inclined surface 71 substantially along the outer edge tangent line, the shutter curtain 20 is wound in the shutter storage portion 10 so as to face backward. Even in the case of overhanging, it can be avoided that the overhanging portion comes into contact with the inclined surfaces 71 of the contact portions 70a and 70b, and the usability of the bending suppressing portion 50 can be improved.

  In addition, the member which comprises such a bending | flexion suppression part 50 can be manufactured by arbitrary methods and materials, for example, the 2nd attachment hole 61a, the part corresponded to the support part 60 in the plate-shaped body made from steel, for example. After the 61b, the wiring hole 62, and the auxiliary mounting holes 63a and 63b are formed by punching, the plate-like body can be bent and formed. Or you may manufacture by welding a some member mutually.

  With the shutter curtain 20 opening prevention structure as described above, the opening 2 is fully closed by the shutter curtain 20 (or the opening 2 is slightly opened so that a person cannot enter). In this case, even if an external force is applied upward with respect to the shutter curtain 20, the contact portions 70a and 70b can prevent the shutter curtain 20 from being bent. It is possible to prevent the part 2 from being opened. Moreover, when the bending suppression part 50 is attached to the 1st opposing side part 11a or the 2nd opposing side part 11b, the positioning of the bending suppression part 50 is easy by the 2nd attachment holes 61a and 61b formed in the support part 60. Therefore, it is possible to improve the installation property of the bending suppressing portion 50.

(Configuration-shutter curtain opening prevention structure-mounting method)
Next, the attachment method of the bending suppression part 50 among the opening prevention structures of the shutter curtain 20 is demonstrated.

  First, in the case where the first opposed side portion 11a and the second opposed side portion 11b in the shutter accommodating portion 10 of the right shutter 1 among the two shutters 1 connected in series shown in FIG. As shown in FIG. 1 (a), FIG. 3 (a), and FIG. 3 (b), first, the first opposing side portion 11a and the second opposing side portion 11b are in contact with the building, The bending suppression part 50 is arranged so that the support part 60 of the bending suppression part 50 abuts on the inner surface of each of the first opposing side part 11a and the second opposing side part 11b. More specifically, as shown in FIG. 3A, the second mounting hole 61a of the bending suppressing portion 50 that is in contact with the first opposing side portion 11a is replaced with the first mounting of the first opposing side portion 11a. The bend suppressing part 50 is arranged so that the contact part 70 a of the bend suppressing part 50 can come into contact with the shutter curtain 20 while being arranged at a position corresponding to the hole 12. Further, as shown in FIG. 3B, the second mounting hole 61b of the bending suppressing portion 50 that is in contact with the second opposing side portion 11b corresponds to the first mounting hole 12 of the second opposing side portion 11b. The bend suppressing portion 50 is disposed so that the contact portion 70b of the bend suppressing portion 50 can be brought into contact with the shutter curtain 20. Next, the fixture inserted through the second mounting hole 61a of the bending suppressing portion 50 abutted against the first opposing side portion 11a and the first mounting hole 12 of the first opposing side portion 11a is fastened to the wall surface of the building. The first opposing side portion 11a and the bending suppression portion 50 are fixed with respect to the building by placing them. In addition, a fixture inserted through the second mounting hole 61b of the bending suppressing portion 50 abutted against the second opposing side portion 11b and the first mounting hole 12 of the second opposing side portion 11b is fastened to the wall surface of the building. The second opposing side portion 11b and the bending suppression portion 50 are fixed to the building by placing them. Subsequently, the first opposing side portion 11a is fixed to the building by fastening or driving the fixture inserted through the auxiliary attachment hole 13 of the first opposing side portion 11a to the wall surface of the building, and the first The second opposing side portion 11b is fixed to the building by fastening or driving a fixture inserted through the auxiliary mounting hole 13 of the two opposing side portion 11b on the wall surface of the building.

  Next, when attaching the 1st opposing side part 11a in the shutter accommodating part 10 of the left shutter 1 among the two shutters 1 connected in series shown in FIG. 1 with respect to a building, it shows in FIG. First, in a state where the first opposing side portion 11a is in contact with the building, the bending suppression is performed so that the support portion 60 of the bending suppression portion 50 contacts the inner surface of the first opposing side portion 11a. The part 50 is arranged. Next, the fixture inserted through the second mounting hole 61a of the bending suppressing portion 50 abutted against the first opposing side portion 11a and the first mounting hole 12 of the first opposing side portion 11a is fastened to the wall surface of the building. The first opposing side portion 11a and the bending suppressing portion 50 are fixed to the building by driving and the like, and the fixture inserted through the auxiliary mounting hole 13 of the first opposing side portion 11a is fastened to the wall surface of the building The first opposing side portion 11a is fixed to the building by, for example, placing. Further, in the embodiment, as shown in FIG. 1A, the shutter accommodating portion 10 of the left shutter 1 is capable of effectively suppressing the bending of the shutter curtain 20 accommodated in the shutter accommodating portion 10. Also on the right side is a bending suppression portion 50. Here, with regard to the attachment of the bending suppression portion 50, specifically, among the respective portions of the first opposing side portion 11a disposed on the left side of the shutter housing portion 10 of the right shutter 1, the vertical direction and the front-rear direction are provided. The right abutting portion 70a in the bending suppressing portion 50 disposed on the right side of the shutter accommodating portion 10 of the left shutter 1 is brought into contact with the plate-like portion rising from the indoor side to the outdoor side so as to be along And fix it by welding.

(Shutter function)
Next, the function of the shutter 1 configured as described above will be described. FIG. 5 is a cross-sectional view corresponding to FIG. 2 and showing a state where the shutter curtain 20 is bent. Here, the function of the right shutter 1 out of the two shutters 1 shown in FIG. 1 will be described, but the function of the left shutter 1 is the same as that of the right shutter 1. Shall.

  First, as shown in FIG. 5, when an external force is applied upward to the shutter curtain 20 when the opening 2 is fully closed by the shutter curtain 20, the shutter curtain 20 is stored in the shutter. Bends inside the part 10 (specifically, the shutter curtain 20 bends obliquely upward and rearward).

  Next, when the shutter curtain 20 is bent by a predetermined amount or more, the shutter curtain 20 is attached to the abutting portion 70a and the second opposing side portion 11b of the bending suppressing portion 50 attached to the first opposing side portion 11a. It contacts with the contact part 70b of the bending suppression part 50. In this case, since the contact portions 70a and 70b and the shutter curtain 20 are in contact with each other, even if the shutter curtain 20 is bent obliquely upward and rearward, the bending of the shutter curtain 20 is suppressed. Therefore, it is possible to prevent the opening 2 from being opened as the shutter curtain 20 bends, and thus it is possible to prevent a person from entering the building.

(Effect of embodiment)
As described above, according to the embodiment, the bending suppression unit 50 is in contact with the contact portions 70a and 70b that come into contact with the shutter curtain 20 when the shutter curtain 20 is bent by a predetermined amount or more by external force being applied. And the support portion 60 for supporting the portions 70a and 70b, so that the opening portion 2 is fully closed by the shutter curtain 20 (or the opening portion 2 is slightly so that a person cannot invade. Even if an external force is applied upward to the shutter curtain 20 when the shutter curtain 20 is opened, the shutter curtain 20 is bent by a predetermined amount or more by either one of the contact portions 70a and 70b. Since this can be suppressed, it is possible to prevent the opening 2 from being opened along with the bending of the shutter curtain 20. Therefore, since the possibility of a person entering the building can be further reduced as compared with the prior art, the crime prevention performance of the shutter 1 can be improved. Further, a first attachment hole 12 through which a fixture for attaching the opposite side portion 11 to the building is inserted is formed in the opposite side portion 11 of the shutter storage portion 10, and the support portion 60 of the bending suppression portion 50 is formed. In order to attach the bending suppression part 50 to the opposing side part 11 via the fixture, the second attachment holes 61a and 61b through which the fixture is inserted are provided on the inner surface of the opposing side part 11. Since it forms in the position corresponding to the 1st attachment hole 12 of the said opposing side part 11 in the state contact | abutted and arrange | positioned, when the bending suppression part 50 was attached to the opposing side part 11, it was formed in the support part 60 Since the second attachment holes 61a and 61b can easily position the bending suppressing portion 50, and the shutter storage portion 10 and the bending suppressing portion 50 can be attached simultaneously in a common operation, the bending suppressing portion 0 it is possible to improve the installation workability.

  Further, when the bending suppressing portion 50 is fixed to the first opposing side portion 11a with the fixture inserted through the second mounting hole 61a and the first mounting hole 12 of the first opposing side portion 11a, the other The abutting portion 70a can be brought into contact with the shutter curtain 20, and the bending suppressing portion 50 is inserted into the second mounting hole 61b and the first mounting hole 12 of the second opposing side portion 11b. When fixed to the two opposite side portions 11b, one of the contact portions 70b can be brought into contact with the shutter curtain 20, so that the first attachment formed on the first opposite side portion 11a or the second opposite side portion 11b. Since the bending suppression part 50 can be fixed to the first opposing side part 11a or the second opposing side part 11b through the hole 12, and the bending of the shutter curtain 20 can be suppressed by the bending suppression part 50, the bending suppression part 50 It is possible to increase the versatility of That.

  Further, for any of the plurality of shutter storage portions 10 having different shapes, it corresponds to the first mounting hole 12 of the opposite side portion 11 in a state where the support portion 60 is in contact with the inner surface of the opposite side portion 11. Since the second mounting holes 61a and 61b are formed so as to be arranged at the positions where they are to be bent, the second mounting holes 61a and 61b are bent through the first mounting holes 12 formed in the opposing side portions 11 of the plurality of shutter storage portions 10 having different shapes. Since the suppressing part 50 can be fixed to the opposing side part 11 and the bending of the shutter curtain 20 can be suppressed by the bending suppressing part 50, the versatility of the bending suppressing part 50 can be further enhanced.

  In addition, since the contact portions 70a and 70b of the bending suppressing portion 50 are arranged on the center side of the shutter curtain 20 with respect to the guide rail 15, even when the shutter curtain 20 swings or deviates due to some cause. Since the abutting portions 70a and 70b can be surely brought into contact with the shutter curtain 20, the bending of the shutter curtain 20 can be more reliably suppressed.

  In addition, of the side surfaces of the contact portions 70a and 70b of the bending suppression unit 50, the entire side surface facing the shutter curtain 20 is stored in the shutter storage unit 10 in a wound state. Since the inclined surface 71 is formed substantially along the outer edge tangent of the portion adjacent to the contact portions 70a and 70b, the contact portions 70a and 70b can be reliably avoided from contacting the shutter curtain 20, so that the shutter curtain 20 It is possible to maintain operational stability.

[III] Modifications to Embodiments While the embodiments of the present invention have been described above, specific configurations and means of the present invention are within the scope of the technical idea of each invention described in the claims. Any modification and improvement can be made. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved. For example, even if the anti-opening structure of the shutter curtain 20 according to the present invention has the same level of security performance as that of the prior art, if the security performance is the same as that of the past due to a different structure, the problem of the present application is It has been solved.

(About the shutter)
In the said embodiment, although demonstrated that the two shutters 1 connected along the left-right direction were provided, it is not restricted to this. For example, only one shutter 1 may be provided. In this case, as described above, the method of attaching the bending suppressing portion 50 is the same as the first opposing side portion 11a in the shutter housing portion 10 of the right shutter 1 among the two shutters 1 connected in series shown in FIG. A method that is substantially the same as the method of attaching the bending suppressing portion 50 when the second opposing side portion 11b is attached to the building is employed.

(On the opposite side)
In the above embodiment, it has been described that the auxiliary mounting hole 13 is provided in each of the first opposing side portion 11a and the second opposing side portion 11b. However, the present invention is not limited to this, and for example, the auxiliary mounting hole 13 is omitted. May be.

  Further, in the above embodiment, the opposing side portion 11 of the shutter storage portion 10 can substantially cover a part of the components (for example, the opening / closing device 30) stored in the shutter storage portion 10. Although it described that the 1st opposing side part 11a and the 2nd opposing side part 11b were provided, it is not restricted to this, For example, even if it has the 1 opposing side part 11 which can cover the whole said component. Good. In this case, a pair of first mounting holes 12 are formed in the opposing side portion 11 symmetrically with respect to the central axis of the opposing side portion 11 in the left-right direction, and a pair of auxiliary mounting holes. 13 are formed symmetrically with respect to the central axis of the opposite side portion 11 in the left-right direction.

(About bending suppression part)
In the embodiment described above, the bending suppression portion 50 includes the support portion 60 and the contact portion so that the bending suppression portion 50 can be attached to either the first opposing side portion 11a or the second opposing side portion 11b. 70a and 70b, and the second mounting holes 61a and 61b, the wiring holes 62, and the auxiliary mounting holes 63a and 63b are formed in the support portion 60. However, the present invention is not limited to this. 6A and 6B are diagrams showing a modification of the bending suppressing unit 50, where FIG. 6A is a front view and FIG. 6B is a side view. For example, as shown in FIG. 6A and FIG. 6B, the bending suppression portion 50 includes the support portion 60 and the bending suppression portion 50 so that the bending suppression portion 50 can be attached only to the first opposing side portion 11a. The support part 60 may be provided with a second attachment hole 61a, a wiring hole 62, and an auxiliary attachment hole 63a. Or the bending suppression part 50 is equipped with the support part 60 and the contact part 70b so that the bending suppression part 50 can be attached only to the 2nd opposing side part 11b. The attachment hole 61b, the wiring hole 62, and the auxiliary attachment hole 63b may be formed.

  Moreover, in the said embodiment, although it demonstrated that the 2nd attachment holes 61a and 61b, the wiring hole 62, and the auxiliary attachment holes 63a and 63b were formed in the support part 60, it is not restricted to this, For example, The wiring hole 62 and the auxiliary mounting holes 63a and 63b may be omitted.

  Moreover, in the said embodiment, although contact part 70a, 70b was demonstrated that it was formed in trapezoid shape, it is not restricted to this, For example, rectangular shape and circular shape may be sufficient. In the above-described embodiment, the contact portions 70a and 70b have been described as being disposed at any position from the center position of the winding shaft 40 to the upper end position of the guide portion 16. However, the present invention is not limited to this. For example, the contact portions 70 a and 70 b may be disposed above the center position of the winding shaft 40.

(About the shape of the support part and contact part)
In the said embodiment, although demonstrated that the support part 60 and contact part 70a, 70b were formed with the plate-shaped body, it is not restricted to this, For example, you may form with a block-shaped body. In this case, the method of forming the bending suppressing portion 50 is arbitrary. For example, the support portion 60 and the contact portions 70a and 70b are formed separately, and the second mounting holes 61a and 61b are formed in the support portion 60. Alternatively, after the wiring hole 62 and the auxiliary mounting holes 63a and 63b are formed by punching, a method of connecting the support portion 60 and the contact portions 70a and 70b by welding or a fixture may be employed.

(About the arrangement of the second mounting hole)
In the above embodiment, the first mounting hole 12 of the first opposing side portion 11a and the first mounting hole 12 of the second opposing side portion 11b are bilaterally symmetric with respect to the central axis in the horizontal direction of the shutter storage portion 10. In the case where the second mounting holes 61a and 61b are arranged symmetrically with respect to the central axis in the left-right direction of the support portion 60, the present invention is not limited to this. For example, the first mounting hole 12 of the first opposing side portion 11 a and the first mounting hole 12 of the second opposing side portion 11 b are vertically symmetrical with respect to the central axis in the vertical direction of the shutter storage portion 10. When arranged, the second attachment holes 61 a and 61 b are arranged symmetrically with respect to each other about the center axis in the vertical direction of the support portion 60. Similarly, the shutter storage unit 10 is arranged so as to be asymmetric with respect to the central axis in the left-right direction (or vertical direction) of the shutter storage unit 10 or is point-symmetric with respect to the center of the shutter storage unit 10. The second mounting holes 61a and 61b are arranged so as to be asymmetric with respect to the central axis in the left-right direction (or up-and-down direction) of the support part 60, or the support part. It is arranged so as to be point-symmetric with respect to the center of 60.

(Appendix)
The shutter curtain opening prevention structure according to attachment 1 is a shutter curtain housed in a wound state inside a shutter housing portion provided in the vicinity of an opening portion of a building, and is unwound from the shutter housing portion and is opened to the opening. When the external force is applied to the shutter curtain for closing the portion in the direction from the opening toward the shutter storage portion, the shutter curtain is prevented from bending inside the shutter storage portion. An opening prevention structure for preventing the opening from being opened along with the bending, and is a side opposite to the building among the side portions of the shutter storage portion. The inner surface of the portion is provided with a bending suppressing means for suppressing the bending of the shutter curtain, and the bending suppressing means applies the external force. When the shutter curtain is bent by a predetermined amount or more, a contact portion that contacts the shutter curtain and a support portion for supporting the contact portion are provided, and the opposite side portion of the shutter storage portion is provided on the opposite side portion. Forming a first attachment hole through which a fixture for attaching the opposite side portion to the building is inserted, and the support portion of the bend restraining means is provided with the bend restraining means via the fixture. In order to attach to the opposite side portion, the second attachment hole through which the fixture is inserted is provided in the first attachment hole of the opposite side portion in a state where the support portion is in contact with the inner surface of the opposite side portion. It is formed in the corresponding position.

  Further, the shutter curtain opening prevention structure according to appendix 2 is the shutter curtain opening preventing structure according to appendix 1, wherein the facing side portion of the shutter storage portion includes a first facing side portion and a first facing side portion. A second opposing side portion disposed at a different position from each other, wherein each of the first opposing side portion and the second opposing side portion is formed with the first attachment hole, and the bending suppressing means A pair of the contact portions and a pair of second mounting holes are formed in the support portion, and one second mounting hole of the pair of second mounting holes and the first of the first opposing side portion are formed. When the bending restraining means is fixed to the first opposing side portion in a state where the attachment tool is inserted through one attachment hole, the other contact portion of the pair of contact portions is A second curtain on the other of the pair of second mounting holes. When the bending suppression means is fixed to the second opposing side portion with the fixture inserted through the hole and the first mounting hole of the second opposing side portion, the pair of the abutting portions One of the contact portions can be brought into contact with the shutter curtain.

  Further, the shutter curtain opening prevention structure according to appendix 3 is the shutter curtain opening preventing structure according to appendix 1 or 2, wherein the opposite side portion is provided for any of the plurality of shutter accommodating portions having different shapes. The second mounting hole is formed so as to be disposed at a position corresponding to the first mounting hole on the opposite side portion in a state in which the support portion is in contact with and disposed on the inner surface.

  Further, the shutter curtain opening prevention structure according to appendix 4 is the shutter curtain opening preventing structure according to any one of appendices 1 to 3, wherein the opening has a pair of ends facing each other in the shutter curtain. A guide rail that guides each of the portions is provided along the opening and closing direction of the opening, and the contact portion of the bending suppressing means is disposed closer to the center of the shutter curtain than the guide rail.

  Further, the shutter curtain opening prevention structure according to appendix 5 is the shutter curtain opening preventing structure according to any one of appendices 1 to 4, wherein the shutter curtain among the side surfaces of the abutting portion of the bending suppressing means. Of the shutter curtain housed in a wound state inside the shutter housing portion, the entire side surface is formed as an inclined surface substantially along the outer edge tangent of the portion adjacent to the contact portion.

(Additional effects)
According to the shutter curtain opening prevention structure according to appendix 1, the bending suppression means includes a contact portion that contacts the shutter curtain when the shutter curtain is bent by a predetermined amount or more due to an external force, and a contact portion. When the opening is fully closed by the shutter curtain, an external force is applied to the shutter curtain in the direction from the opening toward the shutter storage portion. In addition, since the contact portion can suppress the shutter curtain from being bent by a predetermined amount or more, the opening portion can be prevented from being opened along with the bending of the shutter curtain. Therefore, compared with the prior art, the possibility of a person entering the building can be further reduced, so that the crime prevention performance of the shutter can be improved. In addition, a first attachment hole is formed in the opposite side portion of the shutter storage portion for inserting a fixture for attaching the opposite side portion to the building, and the bending suppression means is provided in the support portion of the bending suppression means. In order to attach the second attachment hole through which the fixture is inserted to the opposite side portion via the fixture, the first of the opposite side portion is arranged in a state where the support portion is in contact with the inner surface of the opposite side portion. Since it is formed at a position corresponding to the mounting hole, when the bending suppression means is attached to the opposite side portion, the bending suppression means can be easily positioned by the second mounting hole formed in the support portion. Since the shutter storage portion and the bending suppression means can be attached simultaneously in a common operation, it is possible to improve the installation workability of the bending suppression means.

  According to the shutter curtain opening prevention structure according to appendix 2, in a state where the fixture is inserted through one of the pair of second mounting holes and the first mounting hole of the first opposing side portion. When the bending suppressing means is fixed to the first opposing side portion, the other contact portion of the pair of contact portions can be brought into contact with the shutter curtain, and the other of the pair of second mounting holes can be contacted. In a state where the fixture is inserted through the second mounting hole and the first mounting hole of the second opposing side portion, when the bending suppressing means is fixed to the second opposing side portion, Since one of the abutting portions can abut against the shutter curtain, the bending suppressing means is connected to the first opposing side portion or the relevant through the first mounting hole formed in the first opposing side portion or the second opposing side portion. Because it can be fixed to the second facing side and the bending of the shutter curtain can be suppressed by the bending suppressing means. It is possible to enhance the versatility of the bending suppressing means.

  According to the shutter curtain opening prevention structure according to appendix 3, the opposite side portion in a state where the support portion is disposed in contact with the inner surface of the opposite side portion with respect to any of the plurality of shutter storage portions having different shapes. Since the second mounting hole is formed so as to be disposed at a position corresponding to the first mounting hole, the first mounting holes formed on the opposite side portions of the plurality of shutter housing portions having different shapes are used. Since the bending suppression means can be fixed to the opposite side portion and the bending of the shutter curtain can be suppressed by the bending suppression means, the versatility of the bending suppression means can be further enhanced.

  According to the shutter curtain opening prevention structure described in appendix 4, since the contact portion of the bending suppression means is disposed on the center side of the shutter curtain with respect to the guide rail, the shutter curtain is oscillated or offset for some reason. Even in this case, the abutting portion can be surely brought into contact with the shutter curtain, so that the bending of the shutter curtain can be more reliably suppressed.

  According to the shutter curtain opening prevention structure according to appendix 5, the entire side surface facing the shutter curtain among the side surfaces of the contact portion of the bending suppressing means is housed in a wound state inside the shutter housing portion. Since the curtain is formed as an inclined surface substantially along the outer edge tangent of the portion adjacent to the contact portion, it is possible to reliably avoid contact of the contact portion with the shutter curtain, so that the operation of the shutter curtain is stable. Can be maintained.

DESCRIPTION OF SYMBOLS 1 Shutter 2 Opening part 3 Wiring 10 Shutter accommodating part 11 Opposite side part 11a 1st opposing side part 11b 2nd opposing side part 12 1st attachment hole 13 Auxiliary attachment hole 14 Clinar 15 Guide rail 16 Guide part 20 Shutter curtain 21 Slat 22 fitting part 23 seat plate 24 lifting source 30 switch 40 winding shaft 50 bending suppression part 60 support part 61a, 61b second attachment hole 62 wiring hole 63a, 63b auxiliary attachment hole 70a, 70b abutting part 71 inclined surface 72 Lower horizontal plane 73 Upper horizontal plane

Claims (5)

A shutter curtain that is housed in a wound state inside a shutter housing portion provided in the vicinity of an opening of a building, and is a shutter curtain that is unwound from the shutter housing portion and closes the opening. When the external force is applied in the direction from the opening toward the shutter storage portion, the shutter curtain is prevented from bending inside the shutter storage portion, so that the opening is accompanied with the bending. An opening prevention structure for preventing the part from being opened,
Among the side portions of the shutter storage portion, the inner surface of the facing side portion that is the side portion facing the building is provided with a bending suppressing means for suppressing the bending of the shutter curtain,
The bending suppression means is
A contact portion that contacts the shutter curtain when the shutter curtain is bent by a predetermined amount or more by applying the external force;
A support part for supporting the contact part,
In the opposite side portion of the shutter housing portion, a first attachment hole is formed through which a fitting for attaching the opposite side portion to the building is inserted.
The support portion of the bending suppression means has a second mounting hole through which the fixture is inserted in order to attach the bending suppression means to the opposite side portion via the fixture. Formed in a position corresponding to the first mounting hole of the opposite side portion in a state of being in contact with the inner surface of the opposite side portion,
Shutter curtain opening prevention structure. The opposing side portion of the shutter storage portion includes a first opposing side portion and a second opposing side portion disposed at a position different from the first opposing side portion,
The first mounting hole is formed in each of the first opposing side portion and the second opposing side portion,
A pair of the contact portions and a pair of the second mounting holes are formed in the support portion of the bending suppressing means,
In a state where the fixture is inserted through one second mounting hole of the pair of second mounting holes and the first mounting hole of the first opposing side portion, the bending suppression means is set to the first opposing hole. When fixed to the side portion, the other contact portion of the pair of contact portions can be brought into contact with the shutter curtain,
In the state where the fixture is inserted through the other second mounting hole of the pair of second mounting holes and the first mounting hole on the second opposing side portion, the bending suppressing means is moved to the second opposing side. When fixed to the side portion, one contact portion of the pair of contact portions can be brought into contact with the shutter curtain.
The shutter curtain opening prevention structure according to claim 1. With respect to any of the plurality of shutter storage portions having different shapes, the support portion is placed in contact with the inner surface of the opposite side portion at a position corresponding to the first mounting hole of the opposite side portion. Forming the second mounting hole so as to be disposed;
The shutter curtain opening prevention structure according to claim 1 or 2. In the opening, a guide rail that guides each of a pair of end portions facing each other in the shutter curtain is provided along an opening / closing direction in the opening,
The abutting portion of the bending suppressing means is disposed on the center side of the shutter curtain from the guide rail,
The shutter curtain opening prevention structure according to any one of claims 1 to 3. Of the side surface of the contact portion of the bending suppressing means, the entire side surface facing the shutter curtain is close to the contact portion of the shutter curtain housed in the shutter storage portion in a wound state. Formed as an inclined surface substantially along the outer edge tangent of the part to be,
The shutter curtain opening prevention structure according to any one of claims 1 to 4.

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