JP2018009418A - Guide rail structure for shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve durability of a fall stopper member which extends from an edge part of an opening/closing body as the opening/closing body is smoothly guided into a guide rail when the opening/closing body enters the guide rail to be guided in its opening/closing operation.SOLUTION: A guide rail structure for a shutter is provided with a channel-sectioned guide rail 27 having a rail opening 41 into which an edge part 39 of an opening/closing body 11 for opening and closing a building opening part 13 is inserted; a pair of fall stopper pieces 29 projecting vertically from respective opposed rail inner walls 43 of the guide rail 27 to constitute a slit 55, and guiding a fall stopper member 57 extending from the edge part 39 while stopping it from falling with the slit 55; a parallel superposition part 31 formed at an opening/closing body entry start end 63 of the fall stopper pieces 29 and bent in parallel with the rail inner walls 43 along the rail inner walls 43; and a bent crushed part 33 formed while twisted and bent from a direction perpendicular to the rail inner walls 43 to a direction parallel with the rail inner walls 43 between the fall stopper pieces 29 projecting perpendicularly from the rail inner walls 43 and the parallel superposition part 31.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a guide rail structure for a shutter.

  The shutter guide rail structure is provided with various guide means for satisfactorily guiding the lowermost end to the guide rail when the shutter curtain as an opening / closing body is lowered from the fully opened state. For example, in the guide rail structure of the opening / closing body of Patent Document 1, the inclined guide surface is bent and formed in a funnel shape, and the shutter curtain is guided into the guide groove from above. In the shutter guide device of Patent Document 2, a shutter guide device, which is a separate part having a guide portion, is attached to the upper end of the guide rail. The guide structure of the shutter curtain of patent document 3 has connected the guide part of the curved convex surface shape expanded to a substantially funnel shape with respect to slit width length to the upper end of a guide rail. In the guide rail assembly of the seat shutter of Patent Document 4, when the shutter curtain is lowered from the fully open state, an upper guide that favorably guides the block located at the lowermost end is connected to the upper end of the guide rail.

Japanese Patent Laid-Open No. 9-60457 Japanese Utility Model Publication No. 61-17389 JP 2007-23691 A JP 2001-12167 A

However, a retaining member for restricting slippage from the guide rail may be attached to the edge portion of the slat constituting the shutter curtain. The retaining member includes, for example, a neck portion extending from an edge portion and a wide portion at the extending tip end, and is formed in a substantially T shape in a plan view. This retaining member is retained by a retaining piece provided inside the guide rail.
The retaining pieces project vertically from the inner walls of the opposing rails of the guide rail to form a slit. As for the retaining member, the neck portion passes through the slit, and the wide portion is disposed behind the guide rail on the back side thereof, so that the wide portion does not come out of the slit and the edge portion is prevented from being detached.
Also in this retaining structure, guide means for smoothly introducing the retaining member into the slit is formed. The guide means formed on the retaining piece is formed by an inverted C-shaped introduction portion when viewed from the front (the line of sight seen from the outside of the slat).

  The introduction portion is formed by cutting and cutting a pair of retaining pieces that are separated from each other with a slit so as to cut an upper end sandwiching the slit. In other words, the inverted C-shaped introduction portion becomes a cut end surface, becomes a blade shape formed by the thickness of the retaining piece, and becomes sharp. Each time the descent member is lowered, the neck portion may be worn and damaged by being guided by the introduction portion and being in sliding contact with the introduction portion. In such a conventional guide rail structure for shutter, when the neck portion is shaved and wear powder is generated, or when the neck portion is severely damaged, the wide portion of the retaining member may be cut at the neck portion.

  The present invention has been made in view of the above situation, and an object of the present invention is to smoothly guide the opening / closing body when the opening / closing body enters the guide rail and is guided during the opening / closing operation of the opening / closing body such as a shutter curtain. An object of the present invention is to provide a shutter guide rail structure that can be improved in durability of a retaining member that is guided in a rail and extends from an edge of an opening / closing body.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The shutter guide rail structure according to claim 1 of the present invention is a U-shaped guide rail having a rail opening 41 into which an edge 39 of the opening / closing body 11 which is fixed to the building frame and opens and closes the building opening 13 is inserted. 27 (67),
A pair of guide members 27 (67) that project vertically from the opposing rail inner walls 43 to form a slit 55, and a retaining member 57 that extends from the edge 39 is retained by the slit 55 and guided. Retaining piece 29 of
A parallel overlapping portion 31 formed at the opening / closing body entry start end 63 of the retaining piece 29, bent in parallel with the rail inner wall 43 and close to the rail inner wall 43;
It is provided between the retaining piece 29 projecting perpendicularly from the rail inner wall 43 and the parallel overlapping portion 31, and is twisted and bent from a direction perpendicular to the rail inner wall 43 to a direction parallel to the rail inner wall 43. Formed bending crushing portion 33;
It is characterized by comprising.

  In this shutter guide rail structure, when the retaining member 57 extending from the edge 39 of the opening / closing body 11 starts to enter from the end of the guide rail 27 (67), the retaining member 57 becomes a pair of parallel overlapping portions. 31 are spaced apart. This spaced-apart arrangement is made possible by roughly positioning the edge 39 of the opening / closing body 11 by entering the rail opening 41. When the retaining member 57 is squeezed into the guide rail 27 (67) from the opening / closing body entry start end 63, it moves in the squeezing direction with respect to the parallel overlapping portions 31 that are spaced apart. In the parallel overlapping portion 31, the bending crushing portion 33 and the retaining piece 29 are sequentially continued in the squeezing direction. In the bending crushing part 33, the separation distance with respect to the retaining member 57 is gradually reduced. Finally, the retaining member 57 is guided by the pair of bending crushing portions 33, and the position of the opening / closing body 11 in the thickness direction is determined. Accordingly, the neck portion 61 of the retaining member 57 is positioned at the center of the slit 55 and enters the slit 55.

The shutter guide rail structure according to claim 2 of the present invention is the shutter guide rail structure according to claim 1,
The bending crushing portion 33 is twisted in a direction from a direction perpendicular to the rail inner wall 43 toward the rail opening 41 to be parallel to the rail inner wall 43.

  In this guide rail structure for shutter, the protruding leading edge of the retaining piece 29 that protrudes perpendicularly from the rail inner wall 43 is bent in the direction toward the rail opening 41 at the bend crushing portion 33 and is gradually twisted to be parallel overlapped portions. 31 is connected. In the retaining member 57, the neck portion 61 passes through the slit 55, and the wide portion 59 is disposed on the opposite side of the edge portion 39 with the retaining piece 29 interposed therebetween. As a result, the retaining member 57 first comes into sliding contact with the pair of bent crushing portions 33 that are curved by twisting the wide portion 59 first, and the neck portion 61 is centered on the guide rail 27 with respect to the slit 55. To be combined.

The shutter guide rail structure according to claim 3 of the present invention is the shutter guide rail structure according to claim 1 or 2,
The bending crushing portion 33 is formed by a continuous curved surface.

  In this shutter guide rail structure, a continuous curved surface is formed in the bending crushing portion 33, so that the retaining member 57 is guided by a smooth continuous curved surface with a gradually changing interval width and swallowed into the guide rail 27 (67). It is. Thereby, when the opening / closing body 11 enters the guide rail 27 (67), a collision sound or the like is not generated, and the opening / closing body 11 can be smoothly swallowed.

The shutter guide rail structure according to claim 4 of the present invention is the shutter guide rail structure according to any one of claims 1 to 3,
The parallel overlapping portion 31 is formed with a predetermined length from the opening / closing body entry start end 63 to the bending crushing portion 33.

  In this shutter guide rail structure, the parallel overlapping portion 31 is secured at a predetermined length from the opening / closing body entry start end 63 to the bending crushing portion 33. In the parallel overlap portion 31, the pair of retaining pieces 29 are overlapped and in close contact with the rail inner wall 43. That is, the retaining piece 29 has a parallel overlap portion 31 of a predetermined length that does not protrude vertically from the rail inner wall 43. Thus, the opening / closing body 11 is smoothly introduced between the pair of rail inner walls 43 where the retaining pieces 29 do not protrude when the edge 39 and the retaining member 57 enter from the opening / closing body entry start end 63. It becomes possible.

The shutter guide rail structure according to claim 5 of the present invention is the shutter guide rail structure according to any one of claims 1 to 4,
The guide rail 27 (67) is formed in a U-shaped cross section by a pair of rail inner walls 43 and a back wall surface 65 connecting the pair of rail inner walls 43,
At the opening / closing body entry start end 63 of the guide rail 27 (67), a funnel-shaped guide surface 37 formed by opening at least a pair of the rail inner walls 43 is formed,
The parallel overlapping portion 31 is provided along the funnel-shaped guide surface 37.

  In this shutter guide rail structure, at least a pair of rail inner walls 43 are cut open, and the rail inner width is widened in a funnel shape at the opening / closing body entry start end 63 of the guide rail 27 (67). Is provided. The funnel-shaped guide surface 37 is in close contact with a parallel overlap portion 31 that is overlapped in parallel. The opening / closing body 11 is squeezed into the guide rail 27 (67) while the edge 39 is guided by the funnel-shaped guide surface 37 and positioned at the center of the rail opening 41.

A shutter guide rail structure according to claim 6 of the present invention is the shutter guide rail structure according to any one of claims 1 to 5,
The retaining piece 29 is formed in a reinforcing material 53 fixed to the inside of the guide rail 27.

  In this shutter guide rail structure, the guide rail 27 exposed to the outside and the reinforcing member 53 held inside are formed of materials suitable for their functions. As a result, the guide rail 27 can use an extruded product made of, for example, an aluminum alloy as the outer shell member.

A shutter guide rail structure according to claim 7 of the present invention is the shutter guide rail structure according to claim 6,
The reinforcing material 53 is made of a steel plate.

  In this shutter guide rail structure, for example, a reinforcing member 53 made of a steel plate can be held inside an aluminum guide rail 27. The opening / closing body 11 can prevent the retaining member 57 from coming off with high strength by the retaining piece 29 of the reinforcing member 53. Therefore, even if the guide rail 27 is deformed due to a high temperature due to fire or the like, for example, the reinforcing member 53 can maintain the retaining function of the opening / closing body 11 for a long time.

  According to the guide rail structure for a shutter according to the first aspect of the present invention, the rail is provided by twisting and bending without forming a cut end face on the retaining piece for guiding the retaining member extending from the edge of the opening / closing body. By adopting the parallel overlapping portion that is close to the rail inner wall from the shape protruding vertically from the inner wall, the retaining member is not damaged by the retaining piece, and the durability of the retaining member can be improved. Further, due to the shape of the retaining piece, the opening / closing body is smoothly guided to the guide rail when the opening / closing body enters the guide rail and is guided during the opening / closing operation of the opening / closing body.

  According to the guide rail structure for a shutter according to claim 2 of the present invention, the direction of bending of the retaining piece is a direction toward the rail opening which is a direction from the back side of the guide rail toward the near side, so that the slat The wide part of the retaining member can be smoothly guided.

  According to the guide rail structure for a shutter according to the third aspect of the present invention, since the bent crushing portion is formed by a continuous curved surface, both side surfaces of the retaining member are guided by a smooth continuous curved surface that gradually narrows the interval width. Thus, the movement of the opening / closing body can be made smooth to suppress the generation of abnormal noise or vibration. Thereby, silence can be improved.

  According to the guide rail structure for a shutter according to claim 4 of the present invention, since the pair of retaining pieces are crushed in parallel with the rail inner wall at the opening / closing body entry start end, The stopper piece is a predetermined length portion that does not protrude vertically from the inner wall of the rail, and the edge of the opening / closing body does not interfere with the stopper piece, so that the opening / closing body can be The entry is smooth.

  According to the guide rail structure for a shutter according to the fifth aspect of the present invention, the opening of the opening / closing body can be started to be introduced by the flat funnel-shaped guide surface on which the retaining piece does not protrude. The introduced opening / closing body can be introduced into the slit without causing the neck portion to interfere with the protruding tip edge of the retaining piece while guiding the both side surfaces of the wide portion of the retaining member to the continuous curved surface of the bending crushing portion.

  According to the guide rail structure for a shutter according to claim 6 of the present invention, an extruded product made of an aluminum alloy or the like can be used for the guide rail, and the design and rust prevention properties of the guide rail can be improved. For example, it can be formed of a material suitable for the function.

  According to the guide rail structure for a shutter according to claim 7 of the present invention, a reinforcing member made of a steel plate is provided inside the guide rail made of, for example, an aluminum alloy, and a retaining piece is provided on the reinforcing material. Thus, it is possible to improve the retaining strength of the opening / closing body in the event of a fire.

It is a perspective view showing the appearance of a shutter device provided with the guide rail structure for shutters concerning the embodiment of the present invention. It is the top view which looked at the opening-and-closing body approach start end of the guide rail shown in FIG. 1 from upper direction. It is AA sectional drawing of FIG. It is the perspective view which notched a part of guide rail upper end part. It is BB sectional drawing of FIG. It is a plane sectional view explaining the manufacturing method of a bending crushing part. It is a plane sectional view showing a guide rail in the case of an aluminum extrusion molded product in which a retaining piece is integrally formed. It is a plane sectional view near the upper end of the aluminum guide rail shown in FIG.

Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing an appearance of a shutter device having a shutter guide rail structure according to an embodiment of the present invention.
The shutter guide rail structure according to the present embodiment can be suitably used for a shutter device 15 that opens and closes a building opening 13 using a shutter curtain 11 that is an opening / closing body. The opening / closing body may be a sheet shutter curtain using a resin sheet in addition to a general shutter curtain 11 in which a plurality of aluminum or steel slats 17 are connected. In the present embodiment, a case where the opening / closing body is the shutter curtain 11 will be described as an example.

  The shutter curtain 11 is configured to be connected in a rollable surface by a plurality of slats 17 engaging longitudinal edges adjacent in the vertical direction. As for the shutter curtain 11, the seat board slat 19 is attached to the lower end used as the front-end | tip of the operation direction. The seat plate slat 19 is seated on the lower frame 21 when the shutter curtain 11 closes the building opening 13. On the outdoor side of the seat plate slat 19, a pair of stoppers 25 for restricting drawing into the storage portion 23 are attached to the left and right in the longitudinal direction.

  The shutter guide rail structure according to the present embodiment includes a guide rail 27, a retaining piece 29, a parallel overlapping portion 31, and a bending crushing portion 33 as main components.

  The shutter device 15 is attached to the outside of a sash window 35 provided in a building frame of a house. A storage portion 23 of the shutter curtain 11 is attached above the building opening 13. On the left and right outer sides of the sash window 35, a pair of long guide rails 27 whose upper ends are located and connected to the inside of the storage portion 23 hang down with the vertical direction as the extending direction. The guide rail 27 is fixed to the building frame. The lower ends of the pair of guide rails 27 are connected by the left and right ends of the lower frame 21 that is positioned below the sash window 35 and extends in the horizontal direction.

  For the guide rail 27 and the lower frame 21, an extruded product made of an aluminum alloy or the like can be used. Since the guide rail 27 and the lower frame 21 are made of an aluminum alloy, it is possible to provide design and rust prevention. A steel plate may be used for the guide rail 27 and the lower frame 21.

2 is a plan view of the guide rail 27 shown in FIG. 1 as viewed from above at the opening and closing body entry start end, FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2, and FIG. A perspective view and FIG. 5 are BB sectional views of FIG.
In the present embodiment, most of the guide rail 27 extending in the vertical direction is formed in a U-shaped cross section in a plane cross section as shown in FIG. 2 is a plan view of the funnel-shaped guide surface 37 expanded at the upper end of the guide rail 27, the U-shaped cross section shown in FIG. 5 is hidden by the funnel-shaped guide surface 37. The guide rail 27 has a rail opening 41 into which an edge 39 of the shutter curtain 11 that opens and closes the building opening 13 is inserted. A pair of rail inner walls 43 sandwiching the rail opening 41 is formed with a silencer mounting groove 45. A silencer 47 such as mohair is attached to the silencer attachment groove 45. The shutter curtain 11 ascends and descends while the front and back surfaces of the edge 39 are in sliding contact with the silencer 47.

  As shown in FIGS. 2 and 5, the guide rail 27 has an extended piece 49 protruding outward. A hook portion 51 is provided at the tip of the extending piece 49. The guide rail 27 engages with the hook portion 51 and can be fixed to an outer frame (not shown) with a fixing screw. In this case, the guide rail 27 is fixed to the building frame via the outer frame.

  In the present embodiment, the guide rail 27 has a double structure. That is, as shown in FIG. 5, a reinforcing member 53 similarly formed in a U-shaped cross section is held inside the guide rail 27 formed in a U-shaped cross section. In the present embodiment, the guide rail 27 is an extruded product made of an aluminum alloy or the like, and the reinforcing material 53 is made of a steel plate.

  A pair of retaining pieces 29 project vertically from each rail inner wall 43 facing the guide rail 27. In the present embodiment having a double structure, the pair of retaining pieces 29 protrude from the reinforcing material 53 held inside the guide rail 27. That is, the retaining piece 29 is formed on the reinforcing member 53 fixed to the inside of the guide rail 27. Therefore, in this embodiment, the retaining piece 29 is made of a steel plate. The pair of retaining pieces 29 arranged to face each other constitutes a slit 55 between the protruding tips. The pair of retaining pieces 29 guides the retaining member 57 extending from the edge 39 of the shutter curtain 11 by retaining it with the slit 55.

  The retaining member 57 is integrally formed of, for example, a resin material. The retaining member 57 protrudes from the edge 39 of the slat 17, and the protruding tip becomes the wide portion 59. The wide portion 59 bulges in the thickness direction of the slat 17 and becomes wide. The width of the wide portion 59 is larger than the separation length of the slit 55. The wide portion 59 is fixed to the edge 39 by a neck portion 61 that is narrower than the wide portion 59. The width of the neck 61 is smaller than the width of the slit 55. In the present embodiment, the retaining member 57 has a T-shaped cross section. When the neck 61 passes through the slit 55, the retaining member 57 is prevented from being pulled out toward the rail opening by the wide portion 59.

  The parallel overlapping portion 31 is formed by lying down so that the retaining piece 29 is parallel to the rail inner wall 43 from the opening / closing body entry start end 63 that is the upper end, that is, in close contact with the rail inner wall 43. The parallel overlap portion 31 is formed with a predetermined length from the opening / closing body entry start end 63 to a bending crushing portion 33 described later.

  The parallel overlapping portion 31 is formed by bending each of the pair of retaining pieces 29 protruding vertically so as to be parallel to the rail inner wall 43 from the base end. As a result of the parallel overlapping portion 31 being bent in parallel with the rail inner wall 43, the parallel overlapping portion 31 follows the rail inner wall 43. The parallel overlapping portion 31 crushes the retaining piece 29 that is parallel to the rail inner wall 43 and presses the retaining piece 29 in close contact with the rail inner wall 43.

  The guide rail 27 is formed in a U-shaped cross section by a pair of rail inner walls 43 and a back wall surface 65 connecting the pair of rail inner walls 43. At the opening / closing body entry start end 63 that is the upper end of the guide rail 27, a funnel-shaped guide surface 37 is formed by opening at least a pair of rail inner walls 43 and forming a funnel shape. The funnel-shaped guide surface 37 is provided with the parallel overlapping portion 31 along the surface. Thereby, at the opening / closing body entry start end 63 of the guide rail 27, the guide surface smoothly transitions to the funnel-shaped guide surface 37, the continuous curved surface of the bending crushing portion 33, and the back surface of the retaining piece 29.

  The bending crushing portion 33 is provided between the retaining piece 29 protruding perpendicularly from the rail inner wall 43 and the parallel overlapping portion 31. The bending crushing portion 33 is formed by being twisted and bent from a direction perpendicular to the rail inner wall 43 to a direction parallel to the rail inner wall 43. As a result, the bending crushing portion 33 has a shape obtained by twisting and bending the band plate at a phase of 90 degrees between one end side and the other end side in the longitudinal direction. That is, the bending crushing portion 33 is formed by the same retaining piece 29 that is continuously changed by changing the bending angle for each position.

  The leading edge of the retaining piece 29 is formed in a semicircular cross section, that is, a so-called R surface instead of a rectangular cross section. In the case of the above-described guide rail 27 having a double structure of aluminum and steel (made of steel plate), The retaining piece 29 is formed by bending the inner steel. For this reason, the front end edge of the retaining member 57 becomes a surface of the bent portion and is not an acute angle.

  In the present embodiment, the bending crushing portion 33 is twisted in a direction toward the rail opening 41 from a direction perpendicular to the rail inner wall 43 to be parallel to the rail inner wall 43. Therefore, in the parallel overlapping portion 31, the protruding tip of the retaining piece 29 faces the rail opening 41 side.

FIG. 6 is a cross-sectional plan view for explaining a method of manufacturing the bending crushing portion.
The bending crushing portion 33 is formed with a continuous curved surface. This continuous curved surface is a curved surface formed by twisting and bending the strip-shaped surface constituting the retaining piece 29.

  In the case of the double rail structure of the present embodiment, as a manufacturing procedure, first, an inner steel plate reinforcing member 53 is inserted into the aluminum guide rail 27 from the longitudinal direction. At this time, the pair of retaining pieces 29 project vertically from the rail inner wall 43. Next, the retaining piece 29 is laid from the opening / closing body entry start end 63 side, and is bent from the proximal end of the retaining piece 29 and crushed as shown in FIG. At the opening / closing body entry start end 63, the retaining piece 29 is crushed so as to be parallel to the rail inner wall 43 to form a parallel overlap portion 31 having a predetermined length. The lower side of the parallel overlap portion 31 having a predetermined length is a bent crushing portion 33 that gradually raises the retaining piece 29 from the rail inner wall 43. The lower end of the bent crushing portion 33 is connected to a retaining piece 29 that projects vertically from the rail inner wall 43.

  Thereby, forming to the parallel overlap part 31, the bending crushing part 33, and the retaining piece 29 is completed (see FIG. 3). Thereafter, a funnel-shaped guide surface 37 at the upper end is formed. The funnel-shaped guide surface 37 is formed by cutting the back wall surface 65 by a predetermined length and spreading it outward. Thus, the manufacture of the guide rail 27 having the shutter guide rail structure is completed.

Next, the operation of the above configuration will be described.
In the shutter guide rail structure according to the present embodiment, when the retaining member 57 extending from the edge 39 of the shutter curtain 11 starts to enter from the upper end of the guide rail 27, the retaining member 57 is paired in parallel. The parts 31 are arranged apart from each other. This spaced-apart arrangement is possible when the edge 39 of the shutter curtain 11 is roughly positioned by entering the rail opening 41.

  When the retaining member 57 descends from the opening / closing body entry start end 63 and is squeezed into the guide rail 27, it moves in the squeezing direction (downward) with respect to the parallel overlapping portions 31 that are spaced apart. . In the parallel overlapping portion 31, the bending crushing portion 33 and the retaining piece 29 are sequentially continued in the squeezing direction. In the bending crushing part 33, the separation distance with respect to the retaining member 57 is gradually reduced. Finally, the retaining member 57 is guided by the pair of bending crushing portions 33, and the position in the slat thickness direction is determined. Accordingly, the neck portion 61 of the retaining member 57 is positioned at the center of the slit 55 and enters the slit 55.

  Therefore, in the shutter curtain 11 to be guided, when the edge 39 of the slat 17 and the retaining member 57 are guided and introduced, the edge 39 of the slat 17 is first guided by the funnel-shaped guide surface 37, and then The distal end side of the retaining member 57 is guided by the bending crushing portion 33. In this way, when the shutter curtain 11 is lowered, the retaining member 57 descends after the slat 17 enters the guide rail 27. The guide rail 27 squeezes the slat 17 and then the retaining member 57 enters. Therefore, the guide rail 27 has a configuration in which the retaining piece 29 protrudes inward slightly from the opening / closing body entry start end 63 that is the upper end. That is, each part of the shutter curtain 11 is guided with a time difference. As a result, the edge 39 and the retaining member 57 of the shutter curtain 11 are smoothly lowered onto the guide rail 27 so as to be called.

  Here, in the conventional structure, instead of the continuous curved surface of the bending crushing portion 33, an inverted C-shaped introduction portion is formed in a front view (a line-of-sight direction when the rail opening 41 is viewed from the slat side). This reverse C-shaped introduction part was formed by cutting a pair of retaining pieces 29. In other words, the cut end surface of the inverted C-shaped introduction portion is sharp.

  In this structure, the bending crushing part 33 is provided and it becomes shaping | molding by bending instead of notch formation. The slats 17 are not damaged because there is no cut end face. For this reason, a decrease in durability caused by wear caused by the neck portion 61 of the retaining member 57 slidingly contacting the bending crushing portion 33 is suppressed.

Also, in this shutter guide rail structure, the protruding leading edge of the retaining piece 29 that protrudes perpendicularly from the rail inner wall 43 is bent in the direction toward the rail opening 41 at the bending crushing portion 33 and gradually twisted to become parallel. Connected to the overlapping portion 31. In the retaining member 57, the neck portion 61 passes through the slit 55, and the wide portion 59 is disposed on the opposite side of the edge portion 39 with the retaining piece 29 interposed therebetween. Thereby, in the retaining member 57, the wide portion 59 is first guided by the pair of continuous curved surfaces, and the neck portion 61 is guided to the center with respect to the slit 55.
When the bending direction of the retaining piece 29 is formed opposite to the above configuration, the retaining member 57 is not guided by the pair of continuous curved surfaces at the wide portion 59, and the neck portion is first formed on the protruding leading edge of the retaining piece 29. There is a concern that 61 may come into sliding contact. For this reason, the retaining member 57 is easily scraped by the protruding tip edge.
In this configuration, the direction of bending of the retaining piece 29 is the direction toward the rail opening 41, that is, the direction from the back side to the front side of the guide rail 27, so that the wide portion 59 of the retaining member 57 of the slat 17 is It can lead to smooth. That is, as shown in FIG. 4, the bent crushing portion 33 having this shape is formed in a substantially funnel shape in which the depth width decreases toward the back of the guide rail 27, and the wide portion 59 is guided deeper than the slit 55. It is like that.

  Further, in this guide rail structure for shutter, a continuous curved surface is formed in the bending crushing portion 33, so that the retaining member 57 is guided by the smooth continuous curved surface whose interval width gradually changes and is squeezed into the guide rail 27. Descent. As a result, the shutter curtain 11 can be smoothly squeezed into the guide rail 27. Since the bending crushing portion 33 is formed with a continuous curved surface, both side surfaces of the retaining member 57 are guided while being in sliding contact with the continuous curved surface, and the movement of the shutter curtain 11 can be made smooth to suppress the generation of abnormal noise, vibration, and the like. , Quietness can be improved.

  Further, in this shutter guide rail structure, the parallel overlapping portion 31 is secured at a predetermined length from the opening / closing body entry start end 63 to the bending crushing portion 33. In the parallel overlap portion 31, the pair of retaining pieces 29 are overlapped and in close contact with the rail inner wall 43. That is, the retaining piece 29 does not protrude vertically from the rail inner wall 43. As a result, the shutter curtain 11 can smoothly introduce the edge 39 and the retaining member 57 between the pair of rail inner walls 43 where the retaining pieces 29 do not protrude. Thus, at the opening / closing body entry start end 63, the pair of retaining pieces 29 are crushed parallel to the rail inner wall 43, so that the edge 39 of the shutter curtain 11 is retained when the guide rail 27 enters the guide rail 27. 29 can be prevented from interfering.

  In the shutter guide rail structure, at least the pair of rail inner walls 43 are cut open, and a funnel-shaped guide surface 37 is provided at the opening / closing body entry start end 63 of the guide rail 27. The funnel-shaped guide surface 37 is in close contact with a parallel overlap portion 31 that is overlapped in parallel. The shutter curtain 11 is squeezed into the guide rail 27 while the edge 39 is guided by the funnel-shaped guide surface 37 and positioned at the center of the rail opening 41. As a result, the edge 39 of the shutter curtain 11 can be started to be introduced by the flat funnel-shaped guide surface 37 where the retaining piece 29 is not present. The introduced shutter curtain 11 has a slit without causing the neck portion 61 to interfere with the protruding leading edge of the retaining piece 29 while sliding both sides of the wide portion 59 of the retaining member 57 on the continuous curved surface of the bending crushing portion 33. 55.

  The funnel-shaped guide surface 37 is convenient for guiding the rolled shutter curtain 11 into the guide rail. That is, by making the opening / closing body entry start end 63 of the guide rail 27 the funnel-shaped guide surface 37, the winding diameter changes depending on the length of the shutter curtain 11 to be fed, so that the shutter curtain 11 in which the swaging position changes can be smoothly received. Is possible.

  In this shutter guide rail structure, the guide rail 27 exposed to the outside and the retaining piece 29 for retaining and retaining the retaining member 57 are formed of materials suitable for their functions. As a result, the guide rail 27 can use an extruded product made of, for example, an aluminum alloy as the outer shell member. As a result, an extruded product made of an aluminum alloy or the like can be used for the guide rail 27, and the design and rust prevention properties of the guide rail 27 can be improved.

  Further, in this shutter guide rail structure, for example, a steel plate reinforcing material 53 can be held inside an aluminum guide rail 27. The shutter curtain 11 can be prevented from coming off with high strength by the retaining member 29 of the reinforcing member 53 by the retaining member 57. Therefore, even if the guide rail 27 is deformed due to a high temperature, for example, at the time of a fire, the reinforcing material 53 can maintain the function of preventing the shutter curtain 11 from coming off for a long time. As a result, a reinforcing member 53 made of a steel plate is provided inside the guide rail 27 made of aluminum alloy or the like, and a retaining member 29 is provided on the reinforcing member 53, so that the retaining strength of the shutter curtain 11 in the event of a fire is increased. Can be improved.

Next, a modified example of the above configuration will be described.
FIG. 7 is a plan sectional view showing a guide rail in the case of an aluminum extruded product in which a retaining piece is integrally formed, and FIG. 8 is a plan sectional view in the vicinity of the upper end of the aluminum guide rail shown in FIG.
In the guide rail structure for a shutter according to this modification, the guide rail 67 is an aluminum extruded product. The guide rail 67 is integrally formed with a pair of retaining pieces 29 for retaining the same retaining member 57 as described above. That is, the guide rail 67 is an aluminum guide rail that simultaneously molds the retaining piece 29 during extrusion molding.

  The guide rail 67 is formed with the same bent crushing portion 33 at the opening / closing body entry start end 63 which is the upper end. The bending crushing portion 33 is twisted in a direction parallel to the rail inner wall 43 from the direction perpendicular to the rail inner wall 43 to the rail opening 41 in the same manner as described above. Thus formed. That is, on the rail inner wall 43 of the guide rail 67, the parallel overlap portion 31, the bending crushing portion 33, and the retaining piece 29 are continuously provided from the opening / closing body entry start end 63.

  Also in the case of the guide rail 67 made of a single piece of aluminum, the leading edge of the retaining piece 29 is not an acute angle, but is formed on the R surface with the thickness of the retaining piece 29 itself. The R surface is not cut, but is bent together with the retaining pieces 29 and crushed to be laid. For this reason, the bending crushing portion 33 of the guide rail 67 also has no cut surface and the retaining member 57 is not damaged.

  According to the guide rail structure for a shutter according to this modification, the reinforcing material 53 is not used, so that an inexpensive guide rail 67 can be obtained with a simple structure. Further, since the bending crushing portion 33 is made of aluminum, it is possible to further reduce wear on the retaining member 57 as compared with the case of steel plate.

  While various embodiments have been described above with reference to the drawings, it goes without saying that the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  For example, in the above configuration example, the reinforcing member 53 is assembled to the aluminum guide rail 27, and the retaining piece 29 and the bending crushing portion 33 are formed on the reinforcing member 53. The retaining piece 29 is formed on the aluminum guide rail 67. The shutter guide rail structure according to the present invention is formed by integrally forming the retaining piece 29 and the bending crushing portion 33 on the steel plate guide rail. Also good.

  Therefore, according to the shutter guide rail structure according to the present embodiment, when the shutter curtain 11 enters and guides the guide rail 27 (67) during the opening / closing operation of the shutter curtain 11, the shutter curtain 11 smoothly. Is guided in the guide rail 27 (67), and the durability of the retaining member 57 extending from the edge 39 of the shutter curtain 27 (67) can be improved.

11 ... Opening and closing body (shutter curtain)
DESCRIPTION OF SYMBOLS 13 ... Building opening part 27, 67 ... Guide rail 29 ... Stopping piece 31 ... Parallel overlap part 33 ... Bending crushing part 37 ... Funnel-shaped guide surface 39 ... Edge part 41 ... Rail opening 43 ... Rail inner wall 53 ... Reinforcement material 55 ... Slit 57 ... Retaining member 63 ... Opening / closing body entry start end 65 ... Back wall surface

Claims (7)

A guide rail having a U-shaped cross section having a rail opening into which an edge of an opening and closing body that is fixed to the building frame and opens and closes the opening of the building is inserted;
A pair of retaining pieces for projecting vertically from inner rail walls facing each other of the guide rail to form a slit, retaining the retaining member extending from the edge portion with the slit, and guiding it;
Formed at the opening and closing body entry start end of the retaining piece, a parallel overlapping portion that is bent in parallel with the rail inner wall and is close to the rail inner wall;
A bending crush formed between the retaining piece projecting perpendicularly from the inner wall of the rail and the parallel overlapping portion, and formed by twisting from a direction perpendicular to the rail inner wall to a direction parallel to the rail inner wall. And
A guide rail structure for a shutter, comprising: The guide rail structure for a shutter according to claim 1,
The guide rail structure for a shutter, wherein the bending crushing portion is twisted and bent in a direction from a direction perpendicular to the rail inner wall toward the rail opening to be parallel to the rail inner wall. A guide rail structure for a shutter according to claim 1 or 2,
The guide rail structure for a shutter, wherein the bending crushing portion is formed of a continuous curved surface. The guide rail structure for a shutter according to any one of claims 1 to 3,
The shutter guide rail structure, wherein the parallel overlapping portion is formed with a predetermined length from the opening / closing body entry start end to the bent squashed portion. A guide rail structure for a shutter according to any one of claims 1 to 4,
The guide rail is formed in a U-shaped cross section by a pair of rail inner walls and a back wall surface connecting the pair of rail inner walls,
At the opening and closing body entry start end of the guide rail, a funnel-shaped guide surface is formed by cutting out at least a pair of rail inner walls,
A guide rail structure for a shutter, wherein the parallel overlapping portion is provided along the funnel-shaped guide surface. The guide rail structure for a shutter according to any one of claims 1 to 5,
The shutter guide rail structure, wherein the retaining piece is formed on a reinforcing material fixed inward of the guide rail. The shutter guide rail structure according to claim 6,
A shutter guide rail structure, wherein the reinforcing material is made of a steel plate.

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