JP4944523B2 - Shutter device - Google Patents

Description

  The present invention relates to a shutter device that prevents generation of noise and scratches due to contact between slats constituting a shutter curtain.

  There is a shutter device for opening and closing an opening of a building or structure such as a building or a window, or a window. The shutter device winds up and unwinds a shutter curtain to open and close the opening.

  The shutter curtain is formed by connecting a plurality of metal long slats so that they can be bent, and the shutter curtain is generally wound around a winding portion provided above the opening.

  When the shutter curtain is wound, there is metal contact between the slats, which causes noise and scratches.

  FIG. 11 shows the outline of the entire shutter device, in which 1 denotes a shutter curtain, 2 denotes a guide rail, and 3 denotes a winding portion (a case is omitted in the figure). The shutter curtain 1 is configured by connecting a plurality of metal slats 4 so as to be bendable, and the shutter curtain 1 moves up and down while sliding along the guide rail 2 when the shutter device is opened and closed. Then, the opening is opened or closed by being wound around the winding portion 3 or being drawn out from the winding portion 3. When the shutter curtain 1 is opened and closed, metal contact is made between the shutter curtain 1 and the guide rail 2, or when the shutter curtain 1 is wound around the winding part 3, the inner slat 4 and the outer slat 4 are made of metal. Contact generates noise. Here, the sliding direction of the shutter curtain 1 accompanying opening and closing is generally an upward direction in the opening operation and a downward direction in the closing direction.

  Patent Document 1 discloses a conventional shutter curtain that prevents the occurrence of noise due to metal contact. A shutter device that prevents the occurrence of noise is briefly described with reference to FIGS.

  An upper curl portion 5 and a lower curl portion 6 are formed at both upper and lower ends, which are both ends of the slat 4 in the opening and closing direction, and the upper curl portion 5 and the lower curl portion 6 are rotatably fitted so that they are adjacent to each other vertically. The slats 4 and 4 are connected to bend freely.

  A vibration absorbing material 7 made of synthetic resin is fixed to both longitudinal ends of the slat 4 so that the vibration absorbing material 7 is in sliding contact with the guide rail 2 to prevent generation of noise due to metal contact. Yes.

  Further, in a state where the shutter curtain 1 is wound around the winding portion 3, the vibration absorbing material 7 of the inner layer slat 4 and the vibration absorbing material 7 of the outer layer slat 4 overlap each other, so that the inner layer slat 4. And a gap between the outer slats 4 and metal contact between the slats is prevented.

  For example, the slats 4a in FIGS. 15 and 16 are in a state where both ends are supported by the vibration absorbing member 7, and the lower curl portion 6 has the shutter curtain below the slats 4a. The weight of 1 acts. Accordingly, the lower curl portion 6 has a structure having a strength sufficient to support the weight of the shutter curtain 1. Further, when the weight of the shutter curtain 1 acts on the slat 4a, a lateral load acts on the central portion of the slat 4a, and bending moment acts on the slat 4a, particularly on both ends in the opening / closing direction.

  Next, the cross-sectional shape of the slat 4 has various shapes in view of functions required for the shutter device, appearance, etc. For example, the slat 11 having the cross-sectional shape shown in FIG. 17 is used.

  Also in the slat 11, an upper curl portion 5 and a lower curl portion 6 are formed. The upper curl portion 5 is formed at the tip of the upper end portion 12 bent at an obtuse angle toward the back surface side, and the lower curl portion 6 is formed at the tip end of the lower end portion 13 bent at an acute angle toward the back surface side.

  As shown in FIG. 12, in a state where a part of the shutter curtain 1 is wound, the lower part of the shutter curtain 1 is suspended from the lower curl part 6, and the weight of the shutter curtain 1 is lowered to the lower curl part 6. Acts, a bending moment acts on the lower end portion 13. The rigidity of the lower end portion 13 is small at both end portions where the cross section is open, and therefore deformation due to a bending moment is large at both end portions. Further, as described above, a lateral load acts on the central portion of the slat 4a (see FIG. 16), and a bending moment due to the lateral load also acts on both ends of the slat 4a, and a force in the direction of expanding the V-shape. It becomes.

  For this reason, a bending stress acts repeatedly on the lower end portion 13 by winding up the shutter curtain 1 and repeating the rewinding.

  The inventor has confirmed that the bending portion of the lower end portion 13 of the slat 4, particularly the bending portion at both end portions, may be cracked due to repeated bending stress acting on the lower end portion 13.

  When the cracks become large and the slats 4 protrude from the guide rails 2, the aesthetics are impaired, so that the slats 4 and, in some cases, the shutter curtain 1 need to be replaced. Further, when the crack is generated, the slat 4 is easily deformed, and when the slat 4 is deformed, the slat 4 is likely to come into contact with the guide rail 2 or the like at the time of opening and closing, thereby causing a problem in smooth opening and closing. There is.

JP 2006-45834 A

  In view of such circumstances, the present invention reduces the repeated bending stress acting on the lower end of the slat, particularly one end of the slat in the opening and closing direction, or suppresses deformation of the one end of the opening and closing direction in the bending angle increasing direction. In this way, cracks are prevented from occurring at one end in the opening and closing direction.

  The present invention includes a first curl portion formed at one end portion in the opening / closing direction bent at an acute angle toward the back surface side, and a second curl portion formed at the other end portion in the opening / closing direction bent at an obtuse angle toward the back surface side. And a slat adjacent to the opening / closing direction having a shutter curtain formed by fitting the first curl portion and the second curl portion and flexibly connecting the slats to both ends in the longitudinal direction of the slats A vibration absorbing material is attached to the vibration absorbing material, a regulating member is projected from the vibration absorbing material toward the longitudinal center of the slat, and the regulating member is positioned on the back side of the opening / closing direction one end, and the opening / closing direction one end And the restriction member is related to a shutter device that is a metal rod-like member attached to the vibration absorber, and the vibration absorber is made of synthetic resin. The restriction member absorbs the vibration. And a recess is formed on the back side of the width end of the one end portion in the opening and closing direction, and the regulating member is related to the shutter device housed in the recess, and further to the vibration absorbing material. Has a slat insertion groove into which a longitudinal end portion of the slat is inserted, and the slat insertion groove relates to a shutter device bent along the other end portion in the opening / closing direction.

  According to the present invention, the first curl formed at one end of the opening / closing direction bent at an acute angle toward the back side and the second curl formed at the other end of the opening / closing direction bent at an obtuse angle toward the back side. And a slat adjacent in the opening and closing direction, and a shutter curtain formed by fitting the first curl portion and the second curl portion to be bendable, and having a longitudinal direction of the slat A vibration absorbing material is attached to both ends, a regulating member is projected from the vibration absorbing material toward the center in the longitudinal direction of the slat, and the regulating member is positioned on the back side from one end of the opening and closing direction, and the opening and closing direction Since the opening of the one end portion is restricted, when the weight of the shutter curtain acts on the first curl portion, the load acting on the one end portion in the opening / closing direction is suppressed by suppressing the deformation of the one end portion in the opening / closing direction. Reduce.

  According to the invention, since the regulating member is a metal rod-like member attached to the vibration absorbing material, the regulating member does not change the shape of the vibration absorbing material when the shape of the slat changes. It is possible to cope with this by simply changing the shape.

  According to the invention, the vibration absorbing material is made of synthetic resin, and the regulating member is integrally formed with the vibration absorbing material, so that the manufacturing cost can be reduced.

  According to the present invention, the recess is formed on the back side of the width end of the one end in the opening and closing direction, and the regulating member is housed in the recess. It is possible to deal with it by a typical remodeling.

  Furthermore, according to the present invention, the vibration absorbing material has a slat insertion groove into which a longitudinal end of the slat is inserted, and the slat insertion groove is bent following the other end in the opening / closing direction. Therefore, when the weight of the shutter curtain acts on the second curl portion, it is possible to suppress the deformation of the other end portion in the opening / closing direction and to reduce the load acting on the other end portion in the opening / closing direction. Demonstrate.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  The overall configuration of the shutter device according to the present invention is the same as that shown in FIG. 11, and the cross-sectional shape of the slat is the same as that shown in FIG. A shutter device according to the present invention will be described with reference to FIGS.

  FIG. 1 shows a part of the state in which the shutter curtain 1 is wound around the winding portion 3, and a vibration absorbing material 7 made of synthetic resin is attached to both width ends of the slat 11. 3 and 4, the upper end portion 12 of the slat 11 is bent at an obtuse angle toward the back surface to form an upper curl portion 5 at the tip of the upper end portion 12, and the lower end portion 13 of the slat 11 is The lower curled portion 6 is formed at the lower portion of the lower end portion 13 and bent at an acute angle toward the back side.

  The lower curl portion 6 of the upper slat 11 of the upper and lower adjacent slats 11 and the upper curl portion 5 of the lower slat 11 are fitted, and the upper and lower slats 11, 11 are flexibly connected.

  A groove-like recess 15 extending in the width direction is formed on the back side of both width end portions of the lower end portion 13, and a regulating member 21, which will be described later, interferes with the slat 11 connected to the lower side. Inserted so as not to. Here, the width direction is the width direction of the shutter curtain 1, that is, the longitudinal direction of the slat 11.

  The vibration absorbing material 7 will be described with reference to FIGS. 2, 3 and 5 to 8.

  The vibration absorber 7 has a back surface portion 7a located on the back surface side of the slat 11, and a surface portion 7b located on the front surface side, and an end of the slat 11 is interposed between the surface portion 7b and the back surface portion 7a. A slat insertion groove 16 into which a portion is inserted is formed, and a groove upper portion 16a of the slat insertion groove 16 is bent following the bent shape of the upper end portion 12, and the upper portion of the surface portion 7b faces the groove upper portion 16a. The groove wall part 17 which contacts is formed. Further, a stepped portion 19 is formed at the lower end portion of the back surface portion 7 a leaving both width end portions 18, and the lower curled portion 6 is accommodated in the stepped portion 19.

  The regulating member 21 is provided at the width end portion 18, and the regulating member 21 protrudes in parallel with the lower end of the slat 11 toward the width center side (the longitudinal direction center side of the slat 11) of the shutter curtain 1. As the restricting member 21, a rod-like member having strength, for example, a metal material such as a steel wire or a stainless steel wire is used. The restricting member 21 is attached to the width end portion 18 by necessary means such as press fitting, screwing, and embedding molding.

  In the state where the slat 11 is inserted into the slat insertion groove 16, the vibration absorbing material 7 aligns the through holes 8 and 9 provided in the vibration absorbing material 7 and the slat 11, respectively. Then, it is attached to the slat 11 by inserting required fixing means such as bolts and fixing them.

  Next, the relationship between the regulating member 21 and the slat 11 will be described with reference to FIG.

  When the slats 11 are connected, the lower end portion 13 of the upper slat 11 and the upper end portion 12 of the lower slat 11 face each other with a gap that does not buffer (see FIG. 1). Further, since the concave portion 15 is formed at both ends of the lower end portion 13, a space is formed by the concave portion 15 between the lower end portion 13 and the upper end portion 12. When the vibration absorbing material 7 is attached to the end of the slat 11, the restriction member 21 is inserted into the recess 15. Further, an appropriate gap is formed around the regulating member 21 so that the slats 11 and 11 are not bent or stretched.

  When the restricting member 21 is inserted into the recess 15, the bent portion 13 a of the lower end portion 13 is sandwiched between the surface portion 7 b and the restricting member 21.

  The vibration absorbers 7 are attached to both ends in the longitudinal direction of the slats 11 that are connected to form a shutter curtain.

  The vibration absorbing material 7 is accommodated in the guide rail 2 and moves in the guide rail 2 as the shutter curtain 1 moves up and down (see FIGS. 8A and 11). Since the surface portion 7b protrudes from the surface of the slat 11, when the shutter curtain 1 is displaced in the horizontal direction (width direction) (see FIG. 8B), external force such as wind pressure is applied to the shutter curtain 1. When the slat 11 bends (see FIG. 8C), the surface portion 7b is engaged with the guide rail 2, and the end portion of the slat 11 is removed from the guide rail 2. Suppress taking off.

  As shown in FIG. 1, when the shutter curtain 1 is wound around the winding portion 3, the upper end portion 12 and the lower end portion 13 of the slat 11 that are not completely wound are provided on the shutter curtain 1. A bending moment is applied by vertical force due to its own weight.

  In particular, a large bending moment acts on the lower end portion 13, and the bent portion 13 a, particularly the bent portion 13 a at both width end portions, is deformed to open. The restricting member 21 abuts on the lower end portion 13 to be opened and restricts deformation of the lower end portion 13. When the lower end portion 13 is in contact with the restriction member 21, a part of the vertical force acting on the lower end portion 13 is transmitted to the upper slat 11 through the restriction member 21.

  Therefore, the deformation of the bent portion 13a is suppressed, the load applied to the bent portion 13a is reduced, and the occurrence of cracks is suppressed.

  Further, the bending moment due to the vertical force also acts on the upper end portion 12, but the deformation of the upper end portion 12 is restricted by the groove wall portion 17.

  The vibration absorbing material 7 may be formed integrally or divided into a plurality of parts. For example, the back surface portion 7a and the front surface portion 7b may be separate components, or only a portion of the front surface portion 7b that engages with the guide rail 2 may be a separate component.

  9 and 10 show the vibration absorbing material 7 in the second embodiment.

  In the second embodiment, the regulating member 21 is integrally formed with the back surface portion 7a.

  The shutter curtain 1 may be configured so that the vertical direction of the slat 11 is reversed, and the bending moment due to the vertical force acts in the same manner, so that the vibration absorbing material 7 is reversed in the vertical direction according to the direction of the slat 11. As a result, the deformation of the bent portion 13a is suppressed, the load applied to the bent portion 13a is reduced, and the occurrence of cracks is suppressed.

  Further, substantially the entire longitudinal end portion of the slat 11 is covered with the vibration absorbing material 7 from the width direction end side of the shutter curtain 1, and the interval between the vibration absorbing materials 7 adjacent in the opening / closing direction is small. Even when a bar opening tool such as a bar is inserted into the guide rail 2 through the gap between the guide rails 2 and is engaged with the shutter curtain width direction end and pulled out from the guide rail 2, the bar opening tool is engaged. Since the vibration absorbing material 7 is, the surface portion 7 b of the vibration absorbing material 7 is engaged with the guide rail 2, and the longitudinal end portion of the slat 11 is prevented from being detached from the guide rail 2. Can do. In addition, since substantially the entire longitudinal end portion of the slat 11 is covered with the vibration absorbing material 7 from the end side of the shutter curtain 1, it is possible to prevent only the slat 11 from being pulled out from the guide rail 2. It is excellent in crime prevention.

It is a fragmentary sectional side view which shows the winding part of the shutter apparatus which concerns on embodiment of this invention. It is A arrow directional view of FIG. It is a BB arrow line view of FIG. (A) is a C arrow view of FIG. 2, (B) is a D arrow view of FIG. FIG. 3 is a view taken in the direction of arrow E in FIG. 2. It is the perspective view seen from the lower back side of the vibration-absorbing material used for embodiment of this invention. It is the perspective view seen from the lower surface side of the vibration-absorbing material used for embodiment of this invention. (A) is a diagram showing the relationship between the vibration absorbing material and the guide rail when the shutter curtain is in a normal state, and (B) is the relationship between the vibration absorbing material and the guide rail when the shutter curtain is displaced in the horizontal direction. FIG. 4C is a diagram showing a relationship between the vibration absorbing material and the guide rail in a state where the shutter curtain is bent. It is the perspective view seen from the end surface side of the vibration absorption material used for the 2nd Embodiment of this invention. It is the perspective view seen from the back surface side of the vibration-absorbing material used for the 2nd Embodiment of this invention. It is the whole shutter apparatus schematic. It is a sectional side view which shows the winding state of the conventional shutter curtain. It is a perspective view from the back surface side of a slat edge part. It is a perspective view from the surface side of a slat end part. It is explanatory drawing which shows the load state in the winding state of a shutter curtain. It is explanatory drawing which shows a deformation | transformation of the slat in the winding state of a shutter curtain. It is a figure which shows an example of the slat cross-sectional shape used for a shutter curtain.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shutter curtain 2 Guide rail 3 Winding part 5 Upper curl part 6 Lower curl part 7 Vibration absorber 11 Slat 12 Upper end part 13 Lower end part 15 Recessed part 16 Slat insertion groove 17 Groove wall part 18 Width end part 19 Step part 21 Restriction member

Claims (5)

That Yusuke a first curled portion which is formed in the closing direction end portion which is bent at an acute angle to the back side, a second curled portion which is formed in the closing direction end portion which is bent at an obtuse angle to the rear surface side scan a rat, adjacent to the opening and closing direction comprises a first curled portion and the shutter curtain constructed by connecting bendably the fitted and a second curled portion, the longitudinal ends of the slat A vibration absorbing material is attached, a restricting member is projected from the vibration absorbing material toward the longitudinal center of the slat, and the restricting member is positioned on the back side from one end in the opening and closing direction to open the opening and closing. A shutter device configured to restrict deformation of one end portion in the direction.   The shutter device according to claim 1, wherein the restriction member is a metal rod-like member attached to the vibration absorbing material.   The shutter device according to claim 1, wherein the vibration absorbing material is made of synthetic resin, and the regulating member is integrally formed with the vibration absorbing material.   2. The shutter device according to claim 1, wherein a recess is formed on a back surface side of the width end of the one end portion in the opening and closing direction, and the restriction member is housed in the recess.   The shutter device according to claim 1, wherein the vibration absorbing member has a slat insertion groove into which a longitudinal end portion of the slat is inserted, and the slat insertion groove is bent along the other end portion in the opening and closing direction.

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