JPH08135342A - Slip-off preventing device for shutter curtain - Google Patents

Abstract

PURPOSE: To prevent a bent slat from slipping out of a guide rail even if a shutter curtain installed in an entrance opening part of a building is subjected to surface pressure to bend a slat. CONSTITUTION: A locking projecting piece 6b is formed on a hook 6 provided on the end part of a slat 4, clamping projecting pieces 7a are formed on slide bars 7 disposed on the front wall 1a of a guide rail 1 and the inside surface of the rear wall 1b, whereby when a shutter curtain is subjected to surface pressure to bend a slat 4, the locking projecting piece 6b presses the clamping projecting pieces 7a in such a manner as to follow up the above bending to be deformed. The clamping projecting pieces 7a are forced to clamp the hook 6 by the above deformation to hold a shutter curtain in the lock state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter-caten retaining device, and more specifically, even if the shutter-curtain receives a surface pressure due to a typhoon or the like to bend the slat, its end portion is curved. The present invention relates to a shutter-caten retaining device capable of preventing a shutter from coming out of a guide rail.

[0002]

2. Description of the Related Art Conventionally, a windproof hook is attached to an end portion of a slat as a means for preventing the shutter curtain from bending due to surface pressure due to a typhoon or the like and the end portion coming out of a guide rail. Even if it bends, the hook will guide
The engaging recess formed on the side wall of the rod is prevented from coming off. For example, FIG. 1 and FIG.
As shown in FIG. 3, the wind resistant hook a is formed by bending a steel plate body into a letter V shape in plan view, and has a hook portion c protruding from the end portion of the slat b and a base portion d fixed to the end portion of the slat b. And the base portion d is fixed to the back surface of the flat portion excluding the interlock portions formed on the upper and lower edges of the slat b, while the hook portion c is attached to the side wall of the guide rail e. Joint recess f
When the shutter curtain receives the surface pressure and the slat b is bent, the hook c is engaged with the engaging recess f of the guide rail e to prevent the guide rail from slipping out. I was trying to do it.

However, in the conventional means for preventing the shutter-curtain from coming off, the wind-resistant hook a and the guide rail e are simply shaped such that the wind-resistant hook a is guided by the guide rail e.
As shown in FIG. 3, for example, as shown in FIG. 3, the surface pressure p acts on the shutter-caten installed at the entrance opening of the building to bend the slat b. In this case, the engagement recess f of the guide rail e and the hook portion c of the wind resistant hook b act in the direction of disengagement, so that the engagement of the hook portion c with the engagement recess f is indicated by an imaginary line. There was a defect that the position was displaced and the slat b slipped out of the guide rail e.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation and was devised to eliminate the conventional drawbacks, and the intent thereof is to provide a hook fixed to the slat and a guide rail. -When the shutter curtain receives the surface pressure and the slat bends, the hook-side engagement protrusions can be used to attach the slide-bar-side clasping protrusions to the slide bar fixed on the side. By deforming, this deformation makes it possible for the clasping protrusions to catch the hook and not come off.
An object of the present invention is to provide a shutter-caten retaining device that can hold the shutter-curtain in a locked state.

[0005]

In order to solve the above problems, the technical means adopted by the present invention are a hook fixed to an end portion of a slat which constitutes a shutter carten on a guide rail swallowing side. It consists of a slide bar fixed to the inner surface of the front and rear walls of the guide rail, a locking projection is formed on the tip side of the extension part of the hook, and the extension part of the hook is attached to the tip side of the slide bar. And the shutter protrusion is formed with a required clearance with respect to the extension portion.
When the tenn receives surface pressure and the slat bends, the clasping protrusion of the slide bar pressed by the hooking protrusion of the hook clings to the extension of the hook, and the shutter cover is pressed. It is characterized in that the ten is held in a locked state.

[0006]

Therefore, according to the present invention, when the shutter curtain closed at the entrance opening of the building is subjected to surface pressure due to a typhoon or the like to bend the slat, the extension of the hook follows the bending. The locking projection formed on the tip side presses and deforms the retaining projection formed on the distal side of the slide bar, and this deformation causes the retaining projection to slide in the extension portion of the hook and at the same time Since the projecting piece is locked between the opposed projecting pieces, the hook is locked by the slide bar,
This prevents the shutter curtain from slipping out of the guide rail.

[0007]

Embodiments of the present invention will be described in detail with reference to the accompanying FIGS. In the figure, the guide rail 1 is attached to the guide rail base frame member 2 attached to the skeleton side via a tightening tool 3. Pockets 1c and 1d are formed in the guide rail 1 at substantially intermediate portions of the inner surfaces of the front wall 1a and the rear wall 1b.

Reference numeral 4 is a slat constituting a shutter curtain, and the shutter carter is constructed by vertically binding the slat 4 through interlocks formed at the upper edge and the lower edge of the slat 4. A seat plate is fixed to the lower end of the take-up drum, and the hanging edge side of the upper edge is fixed to the take-up drum mounted on the shutter housing case 5 via the hanging plate. By the forward and reverse rotations of (1) and (2), it is opened and closed along the guide rails 1 erected on the left and right of the entrance opening.

Reference numeral 6 designates a hook fixed to the end portion of the guide rail 1 of the slat 4 on the swallowing side. The hook 6 is made of metal or synthetic resin and extends 6a in the longitudinal direction of the slat 4. Is formed, and a locking projection 6b is integrally formed on the tip side of the extension 6a so as to project in the front and back direction of the slat 4. Reference numerals 7 and 7 denote slide bars fixed to the pockets 1c and 1d,
The slide bars 7 and 7 are made of a metal or a synthetic resin as a material and are formed to have elasticity. On the tip side of the slide bars 7a and 7a, there are provided necessary clearances with respect to the extension 6a of the hook 6. It exists and is formed protruding,
A shutter cover is provided on the opposite side of the attachment protrusions 7a and 7a.
When the tenn receives surface pressure and the slat 4 bends, the front and back end faces of the slat 4 are prevented from directly abutting the pockets 1c and 1d to be deformed or damaged.
b and 7b are formed so as to project from the front and back end surfaces of the slat 4 with a required clearance.

In the above structure, the clasping projection piece 7a of the slide bar 7 is formed with a required clearance with respect to the extension portion 6a of the hook 6, and the protection projection piece 7b is also formed on the front and back sides of the slat 4. Since it is formed with a required clearance with respect to the end face, in a normal case where the surface pressure does not act on the shutter-curtain, the opening / closing operation of the shutter-curtain is smoothly performed.

However, when the shutter-curtain receives surface pressure due to typhoon or the like and the slat 4 bends, as shown in FIG. 5, the engaging protrusion 6b of the hook 6 slides along the slide bar 7 as shown in FIG. The retaining projections 7a, 7a are pressed and deformed, and by this deformation, the retaining projections 7a, 7a slide in the extension 6a of the hook 6, and at the same time, the locking projections 6b move the retaining projections 7a, 7a. The hook 6 is locked between the facing portions 7a, and the hook 6 is locked by the slide bar 7. Therefore, the shutter
Even if surface pressure acts on the ten, the slat 4 will be the guide rail 1.
You can't get out of it. Further, when the slats 4 are curved due to the surface pressure acting on the shutter-curtain, even if the end faces of the curved slats collide with the pockets 1c or 1d, the gap between the front and back surfaces of the slats 4 and the pockets 1c, 1d is reduced. Since the protection protrusions 7b, 7b of the slide bar 7 are interposed in the slat, the slat 4 is not deformed or damaged by the impact.

[0012]

In summary, according to the present invention, the shutter is
It consists of a hook fixed to the end of the guide rail swallowing side of the slat that constitutes the carten, and a slide bar fixed to the inner surface of the front and rear walls of the guide rail. Is formed with a locking projection, and a clasping projection that clings an extension of the hook is formed on the tip end side of the slide bar with a required clearance with respect to the extension. When the tenn receives the surface pressure and the slat bends, the clasping protrusion of the slide bar pressed by the hooking protrusion of the hook clings to the extension of the hook and the shutter
Since it is configured to hold the carten in the locked state,
In the normal case where the shutter curtain does not receive surface pressure,
The opening / closing operation of the shutter-curtain can be performed smoothly, and when the shutter-curtain is subjected to surface pressure and the slat bends, the engaging protrusion of the hook follows the bending and the sliding bar slides in between. The projecting piece is pressed and deformed, and by this deformation, the hooking piece can hold the hook and hold the shutter-curtain in the locked state, and therefore the shutter-curtain can reduce the surface pressure. Even if received, it has an effect of preventing the slats from coming out of the guide rail.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a conventional shutter-curtain retaining device.

[Fig. 2] Same as above, but with a windproof hook fixed on the back

FIG. 3 is a plan view illustrating the operation of the same.

FIG. 4 is a plan view of an essential part of a shutter-curtain retaining device of the present invention.

FIG. 5 is a plan view for explaining the same action as above.

[Explanation of symbols]

 1 Guide rail 1a Front wall 1b Rear wall 1c Front wall pocket 1d Rear wall pocket 4 Slat 6 Hook 6a Extension 6b Locking protrusion 7 Slide bar 7a Clamping protrusion 7b Protective protrusion

Claims (2)

[Claims] 1. A hook which is fixed to an end portion of a slat that constitutes a shutter carten on the side where the guide rail is swallowed, and a slide bar which is fixed to inner surfaces of front and rear walls of the guide rail. A locking projection is formed on the tip side of the extension part of the hook, and a clamping projection piece for holding the extension part of the hook is provided on the tip side of the slide bar with a required clearance with respect to the extension part. When the shutter carten is formed and the slats bend due to the surface pressure, the sliding bar is pressed by the locking projection of the hook, and the projection of the slide bar clamps the extension of the hook. Then, the shutter-curtain retaining device is characterized in that the shutter-curtain is held in a locked state. 2. A protective projection for protecting the front and back end surfaces of the slats when the slats are bent is formed on the tip side of the slide bar with a required clearance from the front and back end surfaces of the slats. The shutter according to claim 1,
Carten retaining device.