JP3841765B2 - Retractable screen device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a screen that winds and unwinds with respect to a winding shaft, and the side end in the width direction is held on the rail by a fastener-like engaging member to prevent the side end from coming off the rail. The present invention relates to an improvement of the take-up screen device.
[0002]
[Prior art]
As shown in FIG. 5, the screen device is configured such that the screen 31 can be wound and rewound with respect to the winding shaft 32, and a fastener-like engaging member 33 attached to the width direction side end of the screen 31 is provided. A roll-up screen device that is engaged with a slit 35b at the rim of the groove 35a in the rail 35 held by the frame member 34 so that the side edge of the screen 31 can be prevented from coming off the rail 35 is disclosed in Patent It has already been known in the literature 1 and the like. As the fastener-like engagement member 33, a half of an original fastener (zipper) itself used for clothes or the like may be used as it is, but a shape similar to that is also used. A large number of engaging elements 33b that engage with the rail 35 are arranged at one end of the tape 33a.
[0003]
However, in the known winding screen device, when the screen 31 is wound around the winding shaft 32, the attachment portion of the fastener-like engaging member 33 is thicker than the thickness of the screen 31, The portions where the engaging elements 33b attached to the belt-like tape 33a overlap are not wound in a state where they are sequentially overlapped. In reality, the engaging elements 33b are arranged in the axial direction of the winding shaft 32 as shown in FIG. The winding slippage occurs. When such winding deviation occurs, if the winding of the screen is continued in this state, the engaging element 33b bites into the slit 35b at the lip of the groove 35a in the rail 35, and the operation becomes heavy. In particular, when the screen 31 wound in a state where the above-described winding deviation has occurred is rewound, the engaging element 33b easily bites into the slit 35b at the rim of the groove 35a in the rail 35, and the screen 31 is continuously pulled out while it is caught. Then, there exists a problem that the engaging element 33b will remove | deviate from the rail 35, or a part will be damaged.
[0004]
In order to solve the above problem, it may be possible to deepen the groove 35a in the rail 35 to allow the fastener-like engagement member 33 to move to some extent in the axial direction of the take-up shaft 32. In addition to the ease of slack in the width direction of the screen 31, it is necessary to increase the overall size of the rail 35 and the frame member 34 that holds the rail 35. New problems arise, such as the opening becoming narrower.
[0005]
[Patent Document 1]
Japanese Examined Patent Publication No. 1-61158 [0006]
[Problems to be solved by the invention]
Since the technical problem of the present invention is unavoidable that the screen is unwound at the time of winding the screen, the engagement of the fastener-like engaging member bites into the slit at the groove edge of the rail due to the unwinding. It is an object of the present invention to provide a wind-up type screen device that can effectively prevent and thereby smoothly wind and unwind a screen with respect to a wind-up shaft.
Another technical problem of the present invention is that without adopting means such as deepening the groove in the rail in order to prevent the engagement element from biting into the slit of the rail or coming off from the rail. The engaging element can be detached from the groove with a simple configuration without increasing the frame size and causing the screen to slack in the width direction or narrowing the usable building opening. It is an object of the present invention to provide a winding screen device that can prevent the above-described problem.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the winding screen device of the present invention holds the fastener-like engaging member at the side in the width direction of the screen, which is wound and unwound with respect to the winding shaft, on the frame member. In a winding screen device that is engaged with a slit at the groove edge of the rail and prevents the side end from coming off the rail, the winding axis for the frame material only at the end portion close to the winding shaft of the rail The movable range of the direction is expanded as compared with other portions of the rail.
[0008]
In the above-described winding screen device of the present invention, it is desirable that the rail is held movably within a small range in the axial direction of the winding shaft with respect to the frame member for smooth operation of the screen.
Also, in a preferred embodiment of the present invention, the end portion close to the winding shaft of the rail is formed separately from the main body portion of the rail, and the main body portion side end of the end portion is free to move within the same range as the main body portion. The end portion of the winding shaft side of the end portion has a larger movable range, or the end portion close to the winding shaft of the rail is formed integrally with the main body portion of the rail and the flexible portion. And it is comprised so that the movable range larger than a main-body part may be given to the winding shaft side end of this terminal part.
[0009]
Further, in the winding screen device of the present invention, in either case where the end portion of the rail is formed separately or integrally with the main body portion, the left and right protrusions of the rail are wound on the opposite side walls of the frame member. winding according to idler groove of constant width in the axial direction to hold freely floating within the de minimis range of the shaft is provided, the projections of the left and right at the end portion of the rail, going to the take-up shaft side end of the body portion end In order to simplify the configuration, it is effective to form a taper that becomes narrower in the axial direction .
[0010]
In addition, the winding screen device of the present invention can be applied to any case where the screen is horizontally or vertically pulled. When the screen is vertically pulled, the both ends of the screen in the width direction are usually used. The fastener-like engaging members provided on the screen are engaged with the slits of the groove edge in the rails respectively held by the frame members on both sides in the width direction of the screen. The present invention can also be applied only to a frame material above a building opening having a rail that holds the upper end.
[0011]
The roll-up screen device having the above-described configuration is unavoidable of the above-described winding deviation at the time of winding the screen using the fastener-like engaging member. ) At the end of the rail, the winding shaft side end follows the fastener-like engagement member that is unwound, so that the engagement of the fastener-like engagement member causes the slit in the rail to slip. It is possible to effectively prevent the screen from being caught, whereby the screen can be smoothly wound and unwound with respect to the winding shaft.
[0012]
In the winding screen device, the groove in the rail is deepened in order to prevent the engaging member from biting into the slit of the rail or coming off from the rail due to the winding deviation of the screen. Without adopting such means, therefore, with a simple configuration, without increasing the finding size of the frame material, causing the screen to loosen in the width direction or narrowing the usable building opening, It is possible to prevent the engaging member from being detached from the groove.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 illustrate one embodiment of the winding screen device of the present invention. This take-up screen device is configured to open and close the screen 1 by lateral pulling, and is connected to a box 3 that houses a take-up shaft 2 of the screen 1 and one end of the box 3. And a frame member 4 having a rail 5 that holds and guides a width-direction side end of the screen 1 that winds and unwinds the screen 1, and the width-direction side end of the screen 1 (the upper end in the illustrated example). ) Is engaged with the slit 5b at the rim of the groove 5a in the rail 5 held by the frame member 4 to prevent the side edge of the screen 1 from coming off the rail 5. I am doing so. Here, only the upper frame member 4 in the horizontal screen device is shown, but a frame member is also provided on the lower side, that is, a frame member for guiding the screen 1 is provided on both sides in the width direction of the screen 1. You can also.
[0014]
The screen 1 that is wound and rewound by the urging force of the winding spring or manual operation with respect to the winding shaft 2 has a fastener-like engaging member 7 attached along the width direction side end. As the fastener-like engaging member 7, one in which a plurality of engaging elements 7b that engage with the slits 5b in the rail 5 are arranged in a fastener shape on one side end of the belt-like tape 7a is used. Half of the original fastener (zipper) itself used for the above can be used as it is, but it has a form similar to it, for example, a number of engagement elements that are similar to a fastener but have no function as a fastener. What was arranged in the one side end of a strip-shaped tape etc. can also be used.
[0015]
A frame member 4 having a rail 5 for guiding the side edge in the width direction of the screen 1 is formed in a channel shape with aluminum or the like, and left and right protrusions 5c of the rail 5 to be described later are formed inside the opposite side wall 4a. Is provided with a fixed width of the idler groove 4b in a small range in the axial direction of the take-up shaft 2.
The rail 5 is formed of a synthetic resin material that reduces sliding resistance with the engaging element 7b of the fastener-like engaging member 7 so that the screen 1 can be smoothly opened and closed. As described above, the frame 4 is held so as to be freely movable within a small range in the axial direction of the take-up shaft 2. Even if there is a slight dimensional error in the attachment position of the fastener-like engagement member 7 with respect to the width or its side end, it can be absorbed.
[0016]
The rail 5 has a separate end portion 5A of several centimeters close to the winding shaft 2 of the rail 5 and a main body portion 5B extending substantially over the entire length of the frame member 4 except for the end portion 5A. A pair of opposed hanging walls 5d forming a groove 5a along the longitudinal direction of the rail 5 at the center in the width direction of the lower surface of the end portion 5A and the main body portion 5B constituting the rail 5; 5d is provided. And the slit 5b is formed in the mouth edge of the said groove | channel 5a by bend | folding in the shape of a hook in the direction which makes the lower end of those opposing hanging walls 5d and 5d face relatively. Further, at both left and right end portions of the rail 5, protrusions 5 c are provided for holding the rail 5 in the floating grooves 4 b of the frame member 4 so as to be freely movable in the axial direction of the winding shaft 2.
[0017]
Further, the rail 5 is formed such that the movable range in the winding axis direction relative to the frame member 4 of the end portion 5 </ b> A close to the winding shaft 2 is enlarged as compared with other portions of the rail 5. That is, as can be seen from FIG. 1, the end portion of the end portion 5A on the main body portion 5B side is freely movable within the same range as the main body portion 5B, and the end portion of the end portion 5A on the winding shaft 2 side is In order to have a larger movable range, the left and right protrusions 5c in the end portion 5A of the rail 5 are arranged in the direction of the winding shaft axis from the end portion on the main body portion 5B side to the end portion on the winding shaft 2 side. It is formed in a tapered shape that becomes narrower. The protruding portion 5c in the end portion 5A will be described in more detail. The protruding portion 5c has an upper surface and a lower surface of the protruding portion 5c below and below the horizontal plane so that it can cope with the vertical movement of the end portion 5A. It is formed so as to be inclined upward, thereby forming a taper that becomes narrower in the direction of the winding shaft axis from the end on the main body portion 5B side to the end on the winding shaft 2 side. If comprised in this way, in addition to simplifying the structure for effectively preventing the engaging element 7b in the fastener-like engaging member 7 from biting into the slit 5b of the rail 5 due to the winding displacement of the screen 1, The screen device can be manufactured at low cost.
In the above-described embodiment, the upper surface and the lower surface of the protrusion 5c in the end portion 5A are inclined downward and upward, respectively, but the present invention is not limited thereto, and only the lower surface side of the protrusion 5c is inclined upward. It can also be.
[0018]
The take-up screen device having the above-described configuration is mainly used for the fastener-like engaging member 7 in which the end of the end portion 5A of the rail 5 on the take-up shaft 2 side is unwound when the screen 1 is rewound (drawn). Since it follows, it can prevent effectively that the engaging element 7b in the fastener-like engaging member 7 bites into the slit 5b in the rail 5 due to the winding deviation, and thereby the screen for the winding shaft 2 can be prevented. 1 winding and rewinding can be performed smoothly.
[0019]
Further, in the winding screen device, in order to prevent the engaging element 7b from biting into the slit 5b of the rail 5 or coming off from the rail 5 due to the winding displacement of the screen 1, the rail 5 Therefore, it is possible to increase the finding size of the frame member 4 to cause the screen 1 to slack in the width direction or to narrow the usable building opening. Therefore, it is possible to prevent the engaging element 7b from being detached from the groove 5a of the rail 5 with a simple configuration.
[0020]
In the embodiment shown in FIG. 1, the rail 5 has a configuration in which the end portion 5A is formed separately from the main body portion 5B. However, as in the embodiment shown in FIG. The close end portion 25A is formed integrally with the main body portion 25B of the rail 25 via the flexible portion 25C, and the end portion 25A has a larger movable range than the main body portion 25B at the winding shaft side end. be able to.
[0021]
In addition, the winding screen device of the present invention can be applied to any case where the screen is horizontally or vertically pulled. When the screen is used for horizontal pulling, as in the above-described embodiment, The present invention can be applied only to the frame material above the opening of the building having a rail that holds the upper end of the screen. It is effective to engage the fastener-like engaging member provided at the end with the slit at the groove edge in the rail respectively held by the frame members at both ends in the width direction of the screen.
[0022]
【The invention's effect】
According to the winding type screen device of the present invention described in detail above, it is possible to effectively prevent the engaging element in the fastener-like engaging member from biting into the slit at the groove edge of the rail due to the winding displacement at the time of winding the screen. Thereby, the screen can be smoothly wound and unwound on the winding shaft.
In addition, in order to prevent the engagement element from biting into the slit of the rail or coming off from the rail, the means for increasing the frame member's appearance dimension can be reduced without employing means such as deepening the groove in the rail. It is possible to prevent the engaging element from being detached from the groove with a simple configuration without causing the screen to sag in the width direction or narrowing the usable building opening.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an essential part of an embodiment of the present invention.
FIG. 2 is a front view of the winding screen device of the present invention.
FIG. 3 is an enlarged cross-sectional view of the winding screen device of the present invention.
FIG. 4 is a partially cutaway front view showing another embodiment of the rail.
FIG. 5 is an operation explanatory diagram of a main part for explaining problems of a known winding screen device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Screen 2 Winding shaft 4 Frame material 4a Opposite side wall 4b Floating groove 5 Rail 5A, 25A End part 5B, 25B Main body part 5a Groove 5b Slit 5c Protrusion 7 Fastener-like engagement member 25C Flexible part

Claims (6)

A fastener-like engagement member at the side in the width direction of the screen that is wound and rewound with respect to the winding shaft is engaged with a slit at the groove edge of the rail held by the frame member, and the side end is In a roll-up screen device that prevents it from coming off the rail,
The movable range in the winding axis direction relative to the frame material of only the end portion close to the winding axis of the rail is expanded as compared with the other parts of the rail.
A roll-up screen device characterized by that. The rail is held freely in a small range in the axial direction of the winding shaft with respect to the frame material.
The winding screen device according to claim 1. The end portion close to the winding shaft of the rail is formed separately from the main body portion of the rail, and the end of the end portion on the main body portion side is freely movable within the same range as the main body portion. The end has a larger range of motion,
The winding screen device according to claim 2. The end portion close to the winding shaft of the rail is formed integrally with the main body portion of the rail via the flexible portion,
The end portion of the winding shaft side end has a larger movable range than the main body portion,
The winding screen device according to claim 2. Provided on the opposite side wall of the frame member is a fixed width idler groove for holding the left and right protrusions of the rail freely within a small range in the axial direction of the take-up shaft,
The left and right protrusions at the end portion of the rail are formed in a taper shape that becomes narrower in the winding axis direction as it goes from the main body portion side end to the winding shaft side end.
The roll-up screen device according to claim 3 or 4, characterized in that. Fastener-like engaging members provided on both side edges in the width direction of the screen were engaged with slits at the groove edge in the rails respectively held by the frame materials on both side edges in the width direction of the screen.
A roll-up screen device according to any one of claims 1 to 5.

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