RU832U1 - Sliding protective curtain - Google Patents

Abstract

A sliding protective curtain containing a fixed support frame with upper and lower rails, folding sections articulated by axles that can be moved along vertical racks with rollers interacting with the upper rails, characterized in that the rollers are made of ball, placed on the racks in a checkerboard pattern and have the ability to interact with the upper and lower guides.

Description

SLIDING PROTECTIVE BLIND

The utility model relates to enclosing structures, namely, structures for installation on window and door openings to ensure their overlap and prevent unauthorized entry into the premises, is installed after the sensors of the security alarm.

Known fencing openings for AS 1409748 ZH EOBV 11/08, contains

The folding sections, consisting of racks and enclosing elements, are hinged together, mounted in the passage with the possibility of unscrewing the sash in any direction, made in the form of a contour frame fixed to the fence post. When one person passes, only the sash, made in the form of a contour frame, is opened for passage. The stopper is controlled by an electromagnetic drive. The shutter is closed by the elastic force of the spring plates. With the passage of mass human flow, the fence develops, the width of the opening for the passage increases.

The disadvantage of this fence is its low stiffness during unauthorized, force penetration, because fencing slides only along the lower guide and - when a small force is applied to the sections, the wheels engage with the guide and the guard easily moves to the side. In addition, the lower guide is located on the pedestrian part of the road (or on the ground) under the feet, which impedes the operation of the fence. The presence of only one guide determines the unevenness of the force when folding and bringing the fence back to its original state, because in this case, the sections are skewed due to the friction forces of the wheels and the guide and the wheels with axles.

A known design of a sliding protective curtain for closing the opening in a freight elevator, taken by me as a prototype. Since I have not found the publication of the design of such a curtain, I am attaching to the application materials a sketch diagram of the said sliding protective curtain.,

It contains a fixed support frame I with upper, 2 and lower 3 guides, folding sections 4, articulated and fastened at the ends by axes 5, and forming movable (folding) parallelograms. Axis 5 have the ability to move along the uprights b. Each vertical strut b is a structure consisting of two mirrored paired U-shaped profiles forming a cavity inside which the axis 5 moves. The profile rollers 7 are horizontally moved along the top 2 guide, respectively fastened to each vertical strut b, transmitting them to the left or to the right.

 Bl.

LI EOBV 9/00

From below, the movement of the racks is determined by the profile of the lower 3 guide. When applying force to the extreme 8 racks to the left © and to the right, respectively, the rollers 7 begin to move along the upper 2 guide. In this case, the folding sections 4 begin to take a more elongated (vertically) position, shifting the racks b left and right, opening the opening. The lower part of the racks 6 moves inside the bottom 3 of the guide, which ensures their horizontal following.

The disadvantage of the described design is the uneven running of the upper and lower parts of the uprights, since the upper part moves more easily due to the presence of profile rollers, while the lower part moves into the groove of the lower guide and the amount of friction that brakes the lower part of the rack depends on whether it is with the surface of the lower guide or not. In addition, debris and dirt, falling into the groove of the lower guide, will inhibit (prevent) the movement of the rack, which leads to skewing of the racks and jamming of the curtains in intermediate positions.

The objective of the utility model is to eliminate these drawbacks, namely, obtaining uniformity of movement and reducing the force when opening and closing the curtains.

The problem is solved due to the fact that in a sliding protective curtain containing a fixed support frame with upper and lower guides, folding sections articulated by axles that can be moved along vertical posts connected to rollers interacting with the upper guide, the rollers are made of ball, placed on racks in a checkerboard pattern and have the ability to interact with the upper and lower guides.

The implementation of the roller ball allows you to get a more uniform stroke of the racks of the curtains and reduce the amount of friction when the rollers move along the guides, by replacing the sliding friction by rolling friction. The design of the ball rollers is illustrated in the prospectus.

The staggered arrangement of the ball rollers makes it possible to compensate for the inaccuracy in the manufacture of folding sections, hinged by axes, forming a parallelogram mechanism and to evenly distribute the total weight of the lattice to each roller, while ensuring that each roller is in contact with the corresponding guide. At the same time, the specific pressure on the guides from each roller decreases, which ultimately reduces the effort of moving the racks and curtains in general.

on figs - section bb in figl, the interaction of the rollers with the top

guide;

figure 4 - section GG in figure 1, the interaction of the rollers with the bottom

guide;

figure 5 is a General view of a sliding protective curtain in the folded box © Sliding protective curtain contains:

motionless support frame I with upper 2 and lower 3 guides, folding sections 4, articulated at the ends by axes 5, forming movable parallelograms. Axis 5 have the ability to move on vertical racks b. Each vertical strut b is a structure consisting of two vertically folded U-shaped profiles forming a cavity inside where the axes 5 move. On the upper 2 and lower 3 guides, ball 7 rollers horizontally move, rigidly fastened to the vertical struts 6, transmitting them moving left or right. The rollers 7 on the uprights b are staggered, i.e. on one rack, the roller 7 is placed on top, © н interacts with the upper 2 guide, on the other - the roller 7 is located below and interacts with the lower 3 guide.

The sliding protective curtain works as follows: when efforts are applied to the extreme 8 racks left and right, the latter move on the roller rollers 7 along the edges 2 and the lower 3 guides. With these © m folding sections 4 take a more elongated © (vertically) position, shifting the vertical posts b left and right, opening the opening. Overlapping the opening is carried out in a similar way, applying force to the extreme 8 racks in the opposite direction.

The sliding protective curtain in the expanded form is installed indoors on a window or doorway. It is located after the burglar alarm sensors. In the case of unauthorized entry into the premises: first the alarm sensor will work and the intruder will be in front of the protective curtain - a rigid metal structure that will stop it for a while, which is sufficient for the arrival of the guard.

A sliding protective curtain can consist of one, two or more paintings. They can work moving to one side or the opposite.

Claims (1)

A sliding protective curtain containing a fixed support frame with upper and lower rails, folding sections articulated by axles that can be moved along vertical racks with rollers interacting with the upper rails, characterized in that the rollers are made of ball, placed on the racks in a checkerboard pattern and have the ability to interact with the upper and lower guides.