JP2010077796A - Rolling screen device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolling screen device capable of simply returning a locking projection under a sliding guiding state from a guide groove for an inner rail. <P>SOLUTION: An inclined guide piece 28 extended to an oblique lower part and superposed at the upper ends of inward flanges 22 for a lower inner rail 20c is fitted at the lower ends of a pair of the inward flanges 22 for an intermediate inner rail 20b. When the locking projections 7 are slipped off from the guide groove 21, a screen 5 is wound with a winding shaft, and the intermediate inner rail 20b is pushed up through working abutting and pushing the locking projections 7 against the lower end of the guide piece 28. An opening is formed between the upper ends of the lower inner rail 20c, and the locking projections 7 are intruded into the guide groove 21 from the opening in this case. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a roll screen device that opens and closes openings such as doorways and windows of a building by a screen wound around a winding shaft.

  As this type of roll screen device, one described in Patent Document 1 has been conventionally known. In this roll screen device, a screen for opening and closing the opening can be wound by a winding shaft, and each of a pair of opposed rail members that guide the movement of both side edges of the screen drawn from the winding shaft is provided inside each roll screen device. An inner rail is incorporated, and each inner rail is provided with a guide groove into which a retaining protrusion provided along both side edges of the screen is movably inserted, and a pair of inward flanges are provided at the opening end of the guide groove. The retaining projection is formed by the pair of inward flanges so that the retaining projection is slidably guided in the retaining state.

  In the roll screen device as described above, since both side edges of the screen are slidably guided by the inner rails in a state of being prevented from being detached, the opening can be closed in a closed state when the screen is closed. It is extremely suitable for opening and closing a doorway of a building such as a factory.

JP-A-8-226292

  By the way, as described above, in the roll screen device that slides and guides both side edges of the screen by the inner rails in the state of being removed, there is a possibility that external force may be applied to the screen when the screen is closed.

  In particular, in a roll screen device that opens and closes the entrance of a building with a screen, when a transport vehicle such as a forklift enters and exits, a part of the transport vehicle often collides with the screen, and external force is applied to the screen. When a part of the large number of retaining protrusions provided along the edges on both sides bends out of the guide groove of the inner rail, the entire roll screen device is disassembled, and the removed retaining protrusions are brought into a sliding guide state. It was necessary to return it, and it was very time-consuming.

  An object of the present invention is to provide a roll screen device that can easily return a retaining projection that has come out of a guide groove of an inner rail to a sliding guide state.

  In order to solve the above-described problems, in the first invention, each of the pair of opposed rail members has a screen wound by a winding shaft and has insertion grooves into which both side edges of the screen are inserted. Built-in inner rail, each inner rail is provided with a guide groove into which the retaining protrusions provided along both side edges of the screen are movably inserted, and the retaining protrusion is retained at the opening end of the guide groove In the roll screen device in which a pair of inward flanges for sliding guidance is formed, the inner rail is divided into three parts, an upper inner rail and an intermediate inner rail arranged at the upper end portion in the rail member, and a lower inner rail. The middle inner rail can be moved in the length direction between the upper inner rail and the lower inner rail. It is supported and biased toward the lower inner rail by an elastic member, and extends obliquely downward to the lower ends of the pair of inward flanges of the intermediate inner rail and overlaps the upper ends of the inward flanges of the lower inner rail A configuration in which an inclined guide piece is provided is employed.

  In the roll screen device configured as described above, when the screen is in a closed state, when a part of the retaining protrusion is pulled out from the guide groove of the inner rail due to an external force applied to the screen, the winding shaft is rotated in the winding direction. When the screen is wound up, the retaining protrusion protruding from the guide groove of the inner rail is pulled up along the inward flange of the inner rail and connected to the lower ends of the pair of inward flanges of the intermediate inner rail. It contacts the lower end of the guide piece. When the retaining projection is further pulled up from the contact state, the intermediate inner rail is pushed up, and when a gap is formed between the lower end and the upper end of the lower inner rail, the retaining projection is moved from the clearance to the guide piece. It is guided to enter the guide groove of the intermediate inner rail, and is returned to the sliding guide state.

  In order to solve the above-mentioned problem, in the second invention, a pair of opposed rail members having a screen wound by a winding shaft and having insertion grooves into which both side edges of the screen are inserted. Each inner rail has an inner rail, and each inner rail is provided with a guide groove into which a retaining protrusion provided along both side edges of the screen is movably inserted, and the retaining protrusion is provided at the opening end of the guide groove. In the roll screen device in which a pair of inward flanges that slide and guide in the retaining state is formed, a pair of inward flanges and a window that divides a part of both side walls of the guide groove vertically are formed on the inner rail. And the structure which made the window the magnitude | size which the said protrusion protrusion can enter was employ | adopted.

  In the roll screen device according to the second aspect of the present invention, in the closed state of the screen, when a part of the retaining protrusion is pulled out from the guide groove of the inner rail due to an external force applied to the screen, the winding shaft is moved in the winding direction. When the screen is wound up, the retaining protrusions that have come out of the guide groove of the inner rail enter the guide groove of the inner rail through the window and return to the sliding guide state.

  In the roll screen device according to the second aspect of the present invention, when the inclined guide piece portion that is inclined obliquely downward is provided at the lower end portion of the inward flange located at the upper portion of the window, the retaining projection is guided to the guide piece portion. Thus, the retaining projection can be returned more smoothly into the guide groove of the inner rail.

  In order to solve the above-mentioned problem, in the third invention, each of a pair of opposed rail members each having a screen wound by a winding shaft and having insertion grooves into which both side edges of the screen are inserted Inner rails are built in, and each inner rail is provided with a guide groove into which the retaining protrusions provided along both side edges of the screen are movably inserted, and the retaining protrusion is retained at the opening end of the guide groove. In a roll screen device in which a pair of inward flanges that slide and guide in a state is formed, the inner rail is divided into two parts, an upper inner rail and a lower inner rail, between the lower end of the upper inner rail and the upper end of the lower inner rail. A configuration in which an opening having a size that allows the retaining protrusion to enter is employed.

  Also in the roll screen device according to the third aspect of the present invention, in the closed state of the screen, when a part of the retaining protrusion is pulled out from the guide groove of the inner rail due to the external force applied to the screen, the winding shaft is wound. By rotating in the take-off direction, it is possible to return the retaining protrusion protruding from the guide groove of the inner rail from the opening into the guide groove of the inner rail.

  As described above, in any of the first to third inventions, when the retaining protrusion comes out of the guide groove of the inner rail, by rotating the winding shaft in the winding direction, The retaining protrusion that has come out can be easily returned into the guide groove of the inner rail.

The front view which shows 1st Embodiment of the roll screen apparatus which concerns on this invention Partially cutaway front view showing the upper part of FIG. Sectional view along line III-III in FIG. FIG. 3 is a partially cutaway side view showing a part of FIG. 3 in an enlarged manner. Sectional view along line VV in FIG. Sectional view along line VI-VI in Fig. 5 Exploded perspective view showing part of rail member and part of inner rail (I) is a cross-sectional view showing a state in which the retaining protrusion is pulled out from the guide groove of the lower inner rail, and (II) is a sectional view showing an initial state of the operation for returning the retaining protrusion to the sliding guide state. Sectional drawing which shows the state which has returned the retaining protrusion to the sliding guide state The front view which shows 2nd Embodiment of the roll screen apparatus based on this invention Sectional view along line XI-XI in FIG. The perspective view which shows a part of inner rail shown in FIG. The front view which shows 3rd Embodiment of the roll screen apparatus based on this invention

  Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of a roll screen device according to the present invention. As shown in the figure, a winding shaft 2 is rotatably incorporated in a cylindrical screen storage box 1. The winding shaft 2 has a cylindrical shape, and a motor 3 and a speed reducer 4 are incorporated therein, and the winding shaft 2 is driven to rotate in both forward and reverse directions by the motor 3.

  One end of a screen 5 is connected to the winding shaft 2, and the screen 5 is wound and rewound by rotation of the winding shaft 2, and hangs down from the winding shaft 2 in the rewound state. A bottom bar 6 is connected to the screen 5 to apply tension in the length direction. Further, as shown in FIGS. 5 and 6, a large number of retaining projections 7 are provided on both side edges of the screen 5. When attaching the retaining protrusion 7, here, the fastener tape 8 of the slide fastener is overlapped and welded to the side edge of the screen 5, and the fastener element attached to the side edge of the fastener tape 8 is retained. 7 and so on.

  As shown in FIG. 1, the upper end portions of a pair of rail members 10 arranged to face each other are connected to both end portions of the lower surface of the screen storage box 1.

  As shown in FIG. 4 to FIG. 6, the rail member 10 is formed with an insertion groove 11 that opens on the opposite surface and a rail storage space 12 that communicates with the insertion groove 11. Each of the insertion groove 11 and the rail storage space 12 extends in the length direction of the rail member 10, and the inner rail 20 is incorporated in the rail storage space 12.

  The inner rail 20 has the same length as the rail member 10. The inner rail 20 is formed with a guide groove 21 into which the retaining protrusions 7 provided along both side edges of the screen 5 are movably inserted. The retaining protrusion 7 is removed from the opening end of the guide groove 21. A pair of inward flanges 22 are provided for sliding guidance in the stopped state.

  Further, the inner rail 20 is formed with a bulging portion 23 projecting forward and backward on the outer surface, and an elastic body 24 such as a sponge is incorporated between the bulging portion 23 and the inner wall of the rail member 10. The elastic body 24 applies a tension in the width direction to the screen 5 by urging the inner rail 20 outward.

  As shown in FIGS. 5 and 7, the inner rail 20 is divided into an upper inner rail 20a, an intermediate inner rail 20b, and a lower inner rail 20c. Each of the upper inner rail 20a and the intermediate inner rail 20b has a length arranged at the upper end portion of the rail member 10.

  A pair of guide pins 25 project from the upper end surface of the bulging portion 23 of the intermediate inner rail 20b, and the guide pins 25 slide into pin holes 26 formed in the lower surface of the bulging portion 23 of the upper inner rail 20a. The intermediate inner rail 20b is freely inserted between the opposed portions of the upper inner rail 20a and the lower inner rail 20c.

  A spring 27 as an elastic member is supported on each of the pair of guide pins 25, and the spring 27 biases the intermediate inner rail 20b toward the lower inner rail 20c.

  An inclined guide piece 28 extending obliquely downward is formed at the lower end of the pair of inward flanges 22 of the intermediate inner rail 20b, and the guide piece 28 is formed at the upper end of the inward flange 22 of the lower inner rail 20c. It overlaps on the formed taper surface 29, and its lower end surface protrudes inward from the inner surface of the lower inner rail 20c.

  The roll screen device shown in the first embodiment has the above-described configuration. When the roll screen device is used as a sheet shutter that opens and closes an opening such as a doorway of a building, the screen storage box 1 is provided above the opening. And a pair of left and right rail members 10 are fixed to both sides of the opening.

  When the roll screen device is mounted as described above, when the winding shaft 2 is rotated in the direction indicated by the arrow in FIG. 3 by driving the motor 3, the screen 5 is rewound from the winding shaft 2 and the weight of the bottom bar 6 is increased. Pulled downward to close the opening.

  On the other hand, when the winding shaft 2 is rotated in the opposite direction indicated by the arrow in FIG. 3 by driving the motor 3, the screen 5 is wound around the winding shaft 2 and the opening is opened.

  At the time of winding or unwinding the screen 5 as described above, the retaining protrusions 7 fixed to both side edges of the screen 5 move along the guide grooves 21 of the inner rail 20.

  Here, in the closed state of the screen 5, when an external force is applied to the screen 5 to bend and a tensile force in the width direction acts on the screen 5, a number of retaining projections 7 provided along both side edges are formed. A part may come out of the guide groove 21 of the inner rail 20.

  FIG. 8 (I) shows a state in which the retaining protrusion 7 has been pulled out from the guide groove 21 of the lower inner rail 20c. When such a state occurs, the screen 5 is wound by rotating the winding shaft 2 in the winding direction by driving the motor 3.

  When the screen 5 is pulled up by the winding, the retaining protrusion 7a that has come out of the guide groove 21 of the lower inner rail 20c is pulled up along the inward flange 22 of the lower inner rail, and a pair of intermediate inner rails 20b is paired. It abuts on the lower end of the guide piece portion 28 provided continuously with the lower end portion of the inward flange.

  FIG. 8 (II) shows a state just before the slip-off preventing projection 7 a coming out comes into contact with the lower end of the guide piece portion 28. When the retaining projection 7a comes into contact with the lower end of the guide piece 28 and the retaining projection 7a is further pulled up from the contact state, the intermediate inner rail 20b is pushed up against the elasticity of the spring 27, and FIG. As shown, a gap 30 is formed between the lower end thereof and the upper end of the lower inner rail 20c.

  When the screen 5 is further lifted from the formation state of the gap 30, the retaining projection 7 is guided from the gap 30 to the guide piece portion 28 and enters the guide groove 21 of the intermediate inner rail 20 b to enter the sliding guide state. When all of the retaining protrusions 7 that have been pulled back are returned to the sliding guide state, the middle inner rail 20b is brought into a state where the guide piece 28 overlaps the tapered surface 29 of the lower inner rail 20c by the elasticity of the spring 27. Returned.

  As described above, when the retaining protrusion 7 is pulled out from the guide groove 21 of the lower inner rail 20c, the retaining protrusion 7 is moved by rotating the winding shaft 2 in the winding direction to wind the screen 5. When the intermediate inner rail 20b is pushed up by abutting against the lower end of the guide piece 28 and a gap 30 is formed between the lower end of the intermediate inner rail 20b and the upper end of the lower inner rail 20c, the intermediate inner rail 20b Since the retaining protrusion 7 enters the guide groove 21, the retaining protrusion 7 that has come out can be easily returned to the sliding guide state.

  In the first embodiment, the winding shaft 2 includes the motor 3 and the speed reducer 4 for rotationally driving the winding shaft 2. However, the motor 3 and the speed reducer 4 are not included in the winding shaft 2. It may be provided outside the winding shaft 2 or may be one in which the motor 3 and the speed reducer 4 are omitted and the winding shaft 2 is manually rotated.

  10 to 12 show a second embodiment of the roll screen device according to the present invention. In the second embodiment, a window 31 for vertically dividing a part of both side walls of the pair of inward flanges 22 and the guide grooves 21 is formed on the upper portion of the inner rail 20 incorporated in the rail member 10. The roll of the first embodiment shown in FIG. 1 to FIG. 3 in that it is formed and provided with an inclined guide piece portion 32 that is inclined obliquely downward at the lower end portion of the inward flange 22 positioned at the upper portion of the window 31. Different from the screen device. For this reason, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the roll screen device configured as described above, when the retaining projection 7 is pulled out from the lower end portion of the guide groove 21 of the inner rail 20, when the screen 5 is wound by rotating the winding shaft 2 in the winding direction, The retaining projection 7 is guided by the guide piece portion 32 and enters the guide groove 21 of the inner rail 20 from the window 31, and the detached retaining projection 7 can be easily returned to the sliding guide state. .

  In the second embodiment, the inclined guide piece portion 32 that is inclined downward is provided at the lower end portion of the inward flange 22 located at the upper portion of the window 31, but the guide piece portion 32 may be omitted. Good.

  FIG. 13 shows a third embodiment of the roll screen device according to the present invention. In the third embodiment, the inner rail 20 is divided into two parts, an upper inner rail 20d and a lower inner rail 20e, and a retaining projection 7 is provided between the lower end of the upper inner rail 20d and the upper end of the lower inner rail 20e. An opening 33 having a size capable of entering is provided, and an inclined guide piece 34 that is inclined obliquely downward is provided at the lower end of the inward flange 22 of the upper inner rail 20d. This is different from the roll screen device of the first embodiment. For this reason, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the roll screen device configured as described above, when the retaining projection 7 is pulled out from the lower end portion of the guide groove 21 of the inner rail 20, when the screen 5 is wound by rotating the winding shaft 2 in the winding direction, The retaining projection 7 is guided by the guide piece 34 and enters the guide groove 21 of the upper inner rail 20d from the opening 33, and the detached retaining projection 7 can be easily returned to the sliding guide state. Can do.

  In the third embodiment, a spacer is incorporated between the opposed portions of the upper inner rail 20d and the lower inner rail 20e, or the upper inner rail 20d and the lower inner rail 20e are placed at fixed positions inside the rail member 10. Means for holding is provided, and the opening 33 is provided at the opposing portion of the upper inner rail 20d and the lower inner rail 20e.

2 Winding shaft 5 Screen 7 Retaining projection 10 Rail member 11 Inserting groove 20 Inner rail 20a Upper inner rail 20b Upper inner rail 20c Lower inner rail 20d Upper inner rail 20e Lower inner rail 21 Guide groove 22 Inward flange 27 Spring (elastic) Element)
28 Guide piece 31 Window 32 Guide piece 33 Opening

Claims (4)

An inner rail is incorporated in each of a pair of opposed rail members having a screen wound by a winding shaft and having insertion grooves into which both side edge portions of the screen are inserted. A roll screen having a guide groove into which a retaining protrusion provided along the guide groove is movably inserted, and a pair of inward flanges for slidingly guiding the retaining protrusion in the retaining state at the opening end of the guide groove. In the device
The inner rail is divided into an upper inner rail, an intermediate inner rail, and a lower inner rail, and the intermediate inner rail is supported so as to be movable in the length direction between opposing portions of the upper inner rail and the lower inner rail, and An inclined guide that is biased toward the lower inner rail by an elastic member, extends obliquely downward to the lower ends of the pair of inward flanges of the intermediate inner rail, and overlaps the upper ends of the inward flanges of the lower inner rail A roll screen device provided with a piece. An inner rail is incorporated in each of a pair of opposed rail members having a screen wound by a winding shaft and having insertion grooves into which both side edge portions of the screen are inserted. A roll screen having a guide groove into which a retaining protrusion provided along the guide groove is movably inserted, and a pair of inward flanges for slidingly guiding the retaining protrusion in the retaining state at the opening end of the guide groove. In the device
A window for vertically dividing a part of both side walls of the pair of inward flanges and the guide groove is formed in the upper part of the inner rail, and the window is sized to allow the retaining protrusion to enter. Roll screen device.   The roll screen device according to claim 2, wherein an inclined guide piece portion is provided at a lower end portion of an inward flange located at an upper portion of the window and is inclined downward. An inner rail is incorporated in each of a pair of opposed rail members having a screen wound by a winding shaft and having insertion grooves into which both side edge portions of the screen are inserted. A roll screen having a guide groove into which a retaining protrusion provided along the guide groove is movably inserted, and a pair of inward flanges for slidingly guiding the retaining protrusion in the retaining state at the opening end of the guide groove. In the device
The inner rail is divided into an upper inner rail and a lower inner rail, and an opening is provided between the lower end of the upper inner rail and the upper end of the lower inner rail so that the retaining protrusion can enter. Roll screen device.

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