JPH0428398Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wind-resistant hook device for a building shutter that is attached to an opening in a building or the like.

[Problems to be solved by the prior art and the invention] In general, in this type of architectural shutter, the shutter curtain moves up and down using guide rails provided on both the left and right sides of the opening as a guide. I am supposed to do this. However, if the left and right sides of the lowered shutter curtain are simply loosely engaged and supported by the guide rails, it will not work properly when exposed to wind pressure from strong winds during a typhoon, etc.
This poses a problem because the shutter curtain may bend in the front-back direction and come off the guide rail.

Conventionally, in order to prevent the shutter curtain from coming off due to the wind pressure caused by strong winds, locking hooks are provided on the slats that make up the shutter curtain, as shown in Figure 5, and the locking hooks guide the shutter curtain when it bends. A device that locks onto a rail has been proposed. However, this method requires a dedicated groove for the locking hooks to be provided in the guide rail, which makes the shape of the guide rail asymmetrical and complicated, and when the shutter curtain is wound up, the locking hooks cannot be installed. There are drawbacks such as the winding diameter becoming larger due to interference, and the winding being unable to be wound in a normal position due to one-sided downward winding.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention was created with the aim of providing a wind-resistant hook device for architectural shutters that can eliminate these drawbacks. In a construction shutter in which an opening is opened and closed by a shutter curtain that is wound around a winding drum and moved up and down while being guided by a guide rail, the shutter curtain has a guide groove in the guide rail. The width of the groove opening is set to fit loosely, and the inner part of the groove is wider in both the front and rear directions. The pin shaft protrudes outward to the left and right so as to reach the inner part of the guide rail groove, and the pin shaft has one side wider than the groove width of the guide rail groove opening and the other side narrower than the thickness of the slat. The center part of the locking hook in the wide side direction is freely rotatably supported, and the shutter curtain is extended out onto the guide rail at the center part of the locking hook in the wide side direction. In this state, the wide side protrudes from the slat in both front and rear directions and is fixed to the guide rail groove opening from the inner side of the groove so that the weight part automatically changes the shape of the locking hook to the position of the pin axis. It is characterized by being provided at the bottom.

With this configuration, the present invention effectively prevents the shutter curtain from coming off the guide rail by providing windproof hooks on the slats. This is to prevent it from getting too big or falling off one side.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes an architectural shutter installed in an opening of a building, and the shutter 1 includes a shutter case 3 that houses a winding drum 2, and a shutter case 3 that is wound around the winding drum 2. The construction of the shutter curtain 4, the guide rail 5, etc. that guide the shutter curtain 4, which moves up and down as the winding drum 2 rotates in the forward and reverse directions, is the same as in the prior art.

Reference numeral 6 denotes a slat that constitutes the shutter curtain 4, and upper and lower connecting portions 6a and 6b are formed at both upper and lower edges of the slat 6, and the slat 6 can swing freely by interlocking with each other. is connected to. Reference numeral 7 denotes a mounting bracket provided at both left and right ends of the slat 6, and a pin shaft 8 that protrudes from both left and right end edges of the slat 6 toward the outer guide rail groove 5a is fixed to the mounting bracket 7. has been done. On the other hand, the guide rail 5 is
The guide groove is a double-inward bending type so that the groove opening is set to a groove width that allows the shutter curtain to loosely fit into the groove, and the deep part of the groove becomes wider in both the front and rear directions. The opening 5b is formed narrow enough to fit the shutter curtain 4 loosely therein.

Reference numeral 9 denotes a locking hook, and the locking hook 9 has a left-right symmetrical shape when viewed from the side, and has a locking portion 9a that protrudes in the shape of left and right wings and is wider than the groove width of the guide rail groove opening. , and a weight portion 9b located at the center thereof, furthermore, the center between the left and right locking portions 9a and the upper portion of the weight portion 9b is rotatably attached to the pin shaft 8. The locking hook 9 is rotatably supported around a pin shaft 8 as a support shaft. When no force is acting on the locking hook 9 in the rotational direction, the weight of the weight 9b lowers so that the weight 9b faces downward in the vertical direction, and the left and right locking portions 9a The locking position of the shutter curtain 4 is set so that it is horizontal and perpendicular to the vertical direction of the slat 6. Therefore, when the shutter curtain 4 is extended to the guide rail 5 and closed, the locking hook 9 is Although the locking hook 9 is in the locking position and is loosely fitted into the guide rail groove 5a, the length A of the side in the left and right direction of the locking hook 9 is as follows.
It is set to be wider than the thickness T of the slat (A>T) and wider than the guide rail opening 5b, so that even if the shutter curtain 4 bends in the front-rear direction due to wind pressure from strong winds, etc. , locking part 9
By locking the shutter curtain a against the narrow opening 5b of the guide rail 5 from the deep side of the groove, both left and right ends of the shutter curtain 4 are prevented from coming off the guide rail 5. There is.

On the other hand, the width B of the vertical side of the locking hook 9 is
It is set to be smaller than the thickness T of the slat 6 (B<T). And shutter curtain 4
When the locking hooks 9 are brought into contact with each other or the locking hooks 9 and the slat 6 are brought into contact with each other when being wound on the winding drum 2, the locking hooks 9 rotate the left and right locking portions 9a with the pin shaft 8 as a supporting axis. is retracted and rotated so that it faces in the same direction as the vertical direction of the slat 6. When the locking hook 9 is in such a retracted position, the vertical width B of the locking hook 9 is smaller than the height T of the slat 6, so the locking hook 9 fits within the thickness of the slat 6, and the locking hook 9 is designed so that it does not interfere with the winding of the shutter curtain 4.

Reference numeral 10 is a reinforcing member such as square steel provided on the guide rail 5, and the reinforcing member 10 is adapted to receive the pressing force when the locking hook 9 is locked.

In the embodiment of the present invention configured as described above, when the shutter curtain 4 is extended to the guide rail 5 and closed, the locking hook 9 is attached to the weight portion 9b.
Due to the self-suspension action, the left and right locking portions 9a protrude in the shape of both wings and automatically take a locking position perpendicular to the slats 6. As a result, the shutter curtain is exposed to wind pressure due to strong winds such as a typhoon, for example. Even when the shutter curtain 4 is bent in the front-rear direction, the locking portion 9a locks into the opening 5b of the guide rail 5 from the deep side of the groove, effectively preventing the shutter curtain 4 from coming off the guide rail 5. be able to.

On the other hand, the locking hook 9 is attached to the shutter curtain 4.
When winding up the shutter curtain 4, by freely rotating around the pin shaft 8, the locking part 9a takes a retracted position within the thickness of the slat 6, so there is no problem in winding up the shutter curtain 4 smoothly. It does not get in the way, and therefore, it is possible to reliably prevent the winding diameter of the shutter curtain 4 from increasing or from falling one-sidedly.

In this way, the locking hook 9 automatically changes to the locking position due to the self-sustaining action of the weight portion 9b, and changes to the retracted position due to the movement of objects around the locking hook 9. When the shutter curtain 4 is wound up on the winding drum 2, the locking hook 9 in the retracted position automatically changes its shape upon contact.
The weight part 9b receives only a slight force that tries to hang on its own, and is hardly subjected to any load. Therefore, the locking hook 9 increases the wind pressure resistance without affecting the winding diameter in any way. This will make an excellent shutter curtain. Moreover, the locking hook 9
can be made bilaterally symmetrical, so the guide rail 5 can also be of a simple structure with bilateral symmetry.
It does not impair the appearance and is easy to manufacture.

It should be noted that the present invention is of course not limited to the above embodiment, and locking hooks of various shapes can be used, for example, as shown in FIG. 4.
Furthermore, if end fittings for preventing the slat from coming off are provided at both ends of the slat, locking hooks may be attached to the end fittings.

[Operations and Effects] In short, the present invention is constructed as described above, so when the shutter curtain is extended to the guide rail and closed, the locking hook is moved against the slat due to the self-sustaining action of the weight. The locking position is automatically set to orthogonally protruding in the front-rear direction, and as a result, even if the shutter curtain bends in the front-rear direction due to strong winds, the locking portions protruding in the left-right direction will keep the guide rail in place. It is possible to effectively prevent the shutter curtain from coming off the guide rail by locking into the groove opening from the deep side of the groove.

On the other hand, when the shutter curtain is rolled up, the locking hook contacts other members such as locking hooks, rotates around the pin axis, and fits within the thickness of the slat, thereby locking the shutter curtain. It does not interfere with the winding of the tar curtain.

Furthermore, the locking hook automatically changes to the locking position due to the self-sustaining action of the weight, and automatically changes to the retracted position when the locking hook itself comes into contact with surrounding objects. Therefore, when the shutter curtain is wound up on the winding drum, the locking hook in the retracted position receives only a slight force from the weight part trying to hang down on its own, and receives almost no load. Therefore, the locking hooks can provide a shutter curtain with excellent wind pressure resistance without affecting the winding diameter in any way. Moreover, since the locking hook can be made bilaterally symmetrical, the guide rail can also be of a simple structure with bilateral symmetry, which does not impair the appearance and is easy to manufacture.

[Brief explanation of the drawing]

The drawings show an embodiment of the windproof hook device for a construction shutter according to the present invention, in which FIG. 1 is a schematic front view of the construction shutter, and FIGS. 2A, B, and C are main parts, respectively. Plan view, front view,
Side view, Figure 3 is an explanatory diagram of the function of the locking hook, Figure 4
Figures A and B are side views of locking hooks showing other examples;
The figure is a plan view of main parts showing a conventional example. In the figure, 1 is a construction shutter, 2 is a winding drum, 4 is a shutter curtain, 5 is a guide rail, 5a is a guide groove, 5b is a groove opening, 6 is a slat, 9 is a locking hook, and 9a is a locking part. This is the stop.

Claims (1)

[Scope of utility model registration request] In a construction shutter in which an opening is opened and closed by a shutter curtain that is wound around a winding drum and moves up and down while being guided by a guide rail, the shutter curtain loosely fits into the guide groove of the guide rail. The groove shape is such that the deep part of the groove is wide in both the front and rear directions relative to the groove opening set to the groove width that fits into the shutter curtain. The pin shaft protrudes outward from the left and right so as to reach the inner part of the guide rail groove, and the pin shaft has one side wider than the groove width of the guide rail groove opening and the other side narrower than the thickness of the slat. The center portion of the wide side of the locking hook to be formed is rotatably supported, and the shutter curtain is mounted on the guide rail at the center of the locking hook in the wide side direction. A weight part is provided below the pin axis position to automatically transform the locking hook so that the wide side protrudes from the slat in both front and rear directions and locks against the guide rail groove opening from the deep side of the groove. A wind-resistant hook device for an architectural shutter, characterized in that: