JPH0137548B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a so-called screen-equipped shutter device in which a screen attached to the front or rear side of the shutter surface is linked with opening and closing of the shutter.
More specifically, the present invention relates to an improvement in a screen winding mechanism.

[Prior Art] The present applicant previously disclosed in Utility Application No. 58-98034,
"A shutter main body consisting of a plurality of slats mounted on a shutter opening/closing device or a shutter winding shaft rotated by a spring so as to be able to be wound freely, one end of which is always fixed to the free end of the shutter main body, A screen-equipped shutter comprising a thin printed screen mounted on a screen winding shaft whose other end is always biased in the winding direction and arranged alongside the shutter body. provided the equipment. Here, "shutter opening/closing machine" includes not only power-type machines that obtain driving force from electric motors and other power sources, but also manual-type machines that are driven by human power. Used to open and close the main body. In addition, "spring-based" means that the shutter main body is opened and closed mainly by the urging force of the spring, except that the starting force is obtained by human power.
It is applied to so-called lightweight shutters, and even in this case it can exert a relatively large force.
Furthermore, this shutter device is of the so-called winding type, and if it belongs to the winding type, there are winding type that opens and closes the shutter body vertically, horizontal pulling type that opens and closes left and right, and horizontal type. This includes a horizontal pull type that opens and closes.

According to the present shutter device, the winding and unwinding of the screen is linked to the winding and unwinding operation by the shutter opening/closing machine or the spring of the shutter body, so a large unfolding tension can be obtained.
The screen can be easily expanded, and the screen is always biased in the winding direction during winding and unwinding operations, so the screen does not sag, allowing smooth winding and unwinding operations. This has effects such as the following.

[Problems to be Solved by the Invention] However, one of the problems faced by the present shutter device is the problem of "wrinkles" that occur when the screen is wound onto the screen winding shaft. As a result of these wrinkles, the screen winds up unevenly, causing not only the surface layers to rub against each other or bending at the wrinkled parts, which gradually damages the screen pattern, but also to the winding and unwinding of the screen. This will have an adverse effect on the shutter main body, which is linked to this, and as a result, it will lead to damage to the entire shutter device.

[Means for Solving the Problems] The present inventors have discovered that the above-mentioned tendency is occurring as shutter devices become larger and therefore screens become larger, and that the storage space in the ceiling is limited. We quickly focused on the fact that the wrinkles are occurring as the screen winding shaft becomes smaller in diameter. vertical seams overlap each other and cause wrinkles,
The conclusion was reached.

The present invention is based on the above findings and aims to prevent the occurrence of wrinkles on the screen by eliminating the cause thereof. By the way, it is difficult to eliminate the deflection of the screen winding shaft itself from various viewpoints. For example, it is necessary to provide appropriate rigidity, which results in a large diameter, making it difficult to store within the ceiling. There are problems such as difficulty in manufacturing with a suitable curvature.

Therefore, the basic technical idea of the present invention is to correct the deflection of the screen winding shaft before reaching the screen winding shaft without making any modification to the screen winding shaft itself.

The screen winding mechanism of the present invention is applied to a type in which the screen is interlocked with the opening and closing of the shutter (so-called interlocking system), and specifically has the following configuration (technical means). That is, there is a shutter main body consisting of a plurality of slats that are attached to a shutter take-up shaft rotated by a shutter opening/closing device or a spring so as to be able to be wound freely, and one end of which is always fixed to the free end of the shutter main body. ,
A thin curtain-like screen attached to a screen winding shaft whose other end is always biased in the winding direction and arranged alongside the shutter body; 1. A screen-equipped shutter device having a screen winding correction mechanism, comprising a screen winding axis correction member disposed nearby and evenly contacting the screen to impart camber in the width direction of the screen.

Here, "camber" refers to a curvature given to the screen winding shaft that is contrary to its tendency to bend. Furthermore, "nearby" means the range of influence of the canvas. Further, the screen winding correction member is not limited to the embodiments described in this specification, but includes all means for imparting the necessary camber to the screen and achieving the desired effect.

Further, the shutter main body includes one made of ordinary slats and one made of a lattice shape (referred to as a grill shutter).

[Function] With the above configuration, when the shutter is opened, that is, when the shutter body is wound around the shutter winding shaft, the screen is also wound around the screen winding shaft. Now drive the shutter opening/closing machine,
When the shutter is closed, that is, when the shutter body is unwound from the take-up shaft, the screen is also expanded in conjunction with the movement of the shutter body. At this time, since the screen is biased in the winding direction with respect to the screen winding shaft, there is no slack in the screen. Next, when the shutter opening/closing device is driven in reverse to open the shutter, that is, when the shutter body is wound onto the winding shaft, the screen is biased in the winding direction with respect to the screen winding shaft. As the shutter body moves, the screen is wound onto the screen winding shaft without any slack. In this case, a camber is applied to the screen near the screen winding shaft by the screen winding correction member, and tensile stress in the width direction is introduced into the screen. Even if the screen into which tensile stress is introduced is subjected to compressive stress in the width direction due to the deflection of the screen winding shaft (this compressive stress is the cause of wrinkles), the compressive stress is canceled out, and the screen No wrinkles occur during winding on the screen winding shaft.

[Effects] The shutter device of the present invention has the following unique effects.

Since the necessary camber is provided by the screen winding correction member, the overall equipment is simpler than when the deflection of the screen winding shaft itself is eliminated.

The camber of the screen winding correction member can be easily adjusted, and wrinkle removal correction can be performed according to the deflection of the screen winding shaft.

Since the screen winding shaft is allowed to bend to some extent, the rigidity of the winding shaft can be reduced, and materials can be saved accordingly.

In the conventional interlocking method, weak points such as stress concentration occur at the joint between the screen and the shutter due to changes in the winding diameter of the screen due to wrinkles on the screen, but this device eliminates the weak points of the interlocking method. I overcame it.

This device can be applied to any of the winding type, horizontal pulling type, and horizontal pulling type.

[Embodiment] This invention adopts the following embodiments.

The screen winding correction member applies a camber to a cylindrical, elastic, rotatable screen winding correction roller by the pressing force of one or more back up rollers. According to this aspect, the correction roller and the screen are in linear contact, and the correction roller rotates in accordance with the movement of the screen, so that the surface of the screen is not damaged. Further, by adjusting the pressing force of the back up roller, an appropriate camber can be applied.

The screen winding correction member shall be a rotatable screen winding correction roller having a crown. According to this aspect, the back-up roller of the aspect is unnecessary, and since it rotates with the movement of the screen, the surface of the screen is not damaged.

The screen winding correction member is formed by applying camber to a sliding contact plate having a low friction surface. According to this aspect, the rotary roller of the aspect described in 2 is not used, and the device is mechanically simple and easy to maintain.

Embodiments Hereinafter, embodiments of a screen-equipped shutter device having a screen winding correction mechanism of the present invention will be described with reference to the drawings.

1 to 3 show an embodiment of the screen winding correction mechanism of the interlocking type.

Here, 1 is a shutter main body, in which a plurality of horizontally long slats 2 are continuous in the vertical direction to form a flexible shutter plate as a whole, and a seat plate 3 is attached to the lower end of the shutter plate. Become.

4 is a magsa placed above an opening in a building or the like.

Reference numeral 5 denotes a shutter winding shaft, to which the upper end of the shutter body 1 is attached.

Reference numeral 6 denotes a shutter opening/closing device (also referred to as a winding device), which is attached in conjunction with the shutter winding shaft 5. The shutter opening/closing machine 6 is of a known type and is of the so-called electric type, consisting of a large sprocket 6a, a chain 6b, a small sprocket 6c, and an electric motor 6d. Note that the shutter opening/closing machine may be either electric or manual.

Then, the shutter opening/closing device 6 is driven to rotate the shutter winding shaft 5 in forward and reverse directions to wind up and unwind the shutter body 1.

Reference numeral 7 denotes a screen, the base of which is made of cloth, a thin metal sheet, a synthetic resin film, etc., and designs such as letters and figures are printed on its surface. The lower end of the screen 7 is fixed to the lower end of the seat plate 3 of the shutter body 1 or in the vicinity thereof using appropriate fixing means.

8 is a screen winding shaft arranged parallel to the shutter winding shaft 5, and the upper end of the screen 7 is attached to the screen winding shaft 8;
There is a screen 7 inside the screen winding shaft 8.
A take-up spring 8a is provided which always urges the winding member in the winding direction.

The screen winding shaft 8 can also be driven independently to take up and unwind the screen independently. In this case, the lower end of the screen 7 is not connected to the seat plate 3, and instead a weight member (not shown) is arranged to apply a constant tension to the screen 7 (for example, a tension of 2 kg per 1 m width). As a driving means for the screen winding shaft 8,
Usually, an electric drive machine is connected to the screen winding shaft 8.
Although the screen winding shaft 8 is arranged inside the screen, it is also possible to rotate the screen winding shaft 8 by a drive machine arranged outside.

Reference numeral 9 denotes an elongated cylindrical screen winding correction roller, whose end shaft 9a is rotatably supported by a bearing 9b. The correction roller 9 is made of a hollow tube such as a thin steel pipe or a vinyl chloride pipe, or a solid member made of hard rubber, and has appropriate elasticity as a whole. The surface of the correction roller 9 is smooth and evenly contacts the screen, so that the surface layer of the screen is not damaged.

Reference numeral 10 denotes a back-up roller 10 for imparting a required camber to the screen winding correction roller 9.
It is composed of main members: a roller body 10a, a support body 10b, and a fixing member 10c. The back up roller 10 is attached to a suitable fixing member 11, and a reaction force is taken by the member 10 to move the correction roller 9.
Press.

The back up roller 10 clamps the correction roller 9 from the front and back to stably hold the correction roller 9, and is arranged in one place at the center of the correction roller 9, and at symmetrical positions from the center. Various aspects such as two locations or a combination thereof may be adopted.

In this embodiment, the screen winding correction roller 9 and the backup roller 10 described above constitute a screen winding correction mechanism.

As the screen 7 moves, the correction roller 9 also rotates and the two come into linear contact, resulting in low friction and no damage to the surface of the screen 7.

FIG. 4 shows another embodiment of the screen winding correction mechanism.

The screen winding correction roller 12 of this embodiment has a crown that has a large diameter at the center and decreases in diameter toward both ends.
A camber is applied to a screen that moves along the surface of 2. Therefore, a backup roller is not required. Reference numeral 12a designates shaft portions at both ends of the correction roller 12, and reference numeral 12b designates bearings that rotatably support the shaft portions. It should be noted that the crown provided to the correction roller 12 adopts a curved line change in addition to the broken line change of this embodiment.

FIG. 5 shows a screen winding correction mechanism according to yet another embodiment.

Reference numeral 13 denotes a sliding contact plate having an L-shaped cross section, and is provided with a camber toward the outside of the central portion. The sliding contact plate 1
As the material 3, a relatively rigid material (for example, metal, hard synthetic resin, etc.) is used. The screen 7 slides along the outer surface 13a of the sliding plate 13. For this reason, the outer surface 13a is particularly required to be smooth.If the surface of the material of the sliding contact plate 13 is sufficiently smooth, it can be used as is, but if it is not smooth, the surface of the material is coated to improve smoothness and wear resistance. give gender. As such a coating, a phosphate chemical conversion treatment film or a fluororesin-based coating is recommended.

Note that unless the sliding contact plate 13 is used at a corner, it may be a flat plate (of course, a camber is provided).

The present invention is not limited to the configuration of the above-described embodiments, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following modifications are included within the technical scope of the present invention.

The shutter body 1 is not limited to a closed type made of slats, but may be a lattice type.

The crowned correction roller 12 is supported by a back up roller.

The sliding contact plate 13 is pressed by a back-up roller to apply an appropriate camber.

[Brief explanation of drawings]

The drawings show an embodiment of a screen-equipped shutter device having a screen winding correction mechanism of the present invention, and FIG. 1 is a side view of one embodiment, FIG. 2 is a view taken along the X-ray arrow in FIG. The figure is an enlarged view of the main part, FIG. 4 is an illustrative diagram showing a screen winding correction mechanism according to another embodiment of the present invention, and FIG. 5 is a diagram showing a screen winding compensation mechanism according to still another embodiment of the present invention. FIG. 1...Shutter body, 2...Slat, 5...
Shutter winding shaft, 6...Shutter opening/closing machine, 7...
...Screen, 8...Screen winding shaft, 9...
... Screen winding correction roller, 10 ... Backup roller, 12 ... Screen correction roller with crown, 13 ... Sliding contact plate.

Claims (1)

[Scope of Claims] 1. A shutter main body mounted on a shutter opening/closing device or a shutter winding shaft rotated by a spring so as to be able to be wound freely; one end of the shutter main body is always fixed to the free end of the shutter main body; , a thin curtain-like screen attached to a screen winding shaft whose other end is always biased in the winding direction and arranged side by side with the shutter body, and parallel to the screen winding shaft, and A screen-equipped shutter device having a screen winding correction mechanism, comprising: a screen winding correction member disposed near the screen, the screen winding correction member equally contacting the screen and imparting camber in the width direction of the screen. 2. The screen winding correction member is formed by applying a camber to an elastic, rotatable screen winding correction roller in the form of a right cylinder by the pressing force of one or more back-up rollers. A screen-equipped shutter device having the screen winding correction mechanism according to item 1. 3. The screen winding correction member is a rotatable roller having a crown.
A screen-equipped shutter device having a screen winding correction mechanism as described in 2. 4. A screen-equipped shutter device having a screen winding correction mechanism according to claim 1, wherein the screen winding correction member is formed by imparting camber to a sliding contact plate having a low friction surface.