RU2344262C1 - Window protection mechanism (versions) - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to construction industry, mainly to lattice design to be installed in widow openings. The window mechanism with, at least, one opening leaf is intended for protecting from unauthorised access and contains a lattice with open wide section and locking mechanism. The lattice is designed to fasten window from outside so that open wide section is situated opposite to the opening window leaf. The locking mechanism is represented with lugs, which are parallel to lattice plane. One lug is fixed to the open wide section of the lattice and intended for accommodating ladle-shape rod so that the curved part overlaps the upper part of lugs. The rod is realised with handle having L_p length derived from the condition: Lp>1.2(L+1.7D-2d), where L - distance from lug to window plane, D - lug opening diameter, d - rod diameter.

EFFECT: improvement of mechanism reliability.

4 cl, 6 dwg

Description

The group of inventions relates to the field of construction, namely the field of window openings in order to protect against unauthorized entry and to ensure the possibility of emergency evacuation of people from buildings.

Windows of buildings to protect against unauthorized entry are closed with blind bars. Protecting the room, such gratings pose a problem for people in the room in case of emergency, such as a fire.

The closest analogue of the present invention is a window protection device comprising a swing grating with a locking device fixed to the outside of the window and at least one window sash (see RU 2214494, publ. 2003).

The disadvantage of the closest analogue is the design complexity of the locking node.

The technical task of the proposed group of inventions is the creation of a simple and reliable window protection device, which ensures the speed and ease of unlocking the grate in an emergency.

The problem is solved in that the device for protecting a window with at least one opening casement against unauthorized entry contains a grating with a hinged section and a locking mechanism designed to be fixed on the outside of the window so that the hinged section of the grating is opposite the opening window sash. The locking mechanism is made in the form of lugs parallel to the plane of the grating, one of which is fixed to the swinging section of the grate, and designed to accommodate a curved bucket-shaped rod in the eyelet holes with a handle of length Lp selected from the condition: Lp> 1.2 (L + 1,7D-2d), where L is the distance from the eye to the plane of the window, D is the diameter of the holes of the eyes, d is the diameter of the rod.

To fix the rod opposite the selected area in at least one eye, a groove can be made to accommodate the part of the rod that is distant with respect to the handle in it.

The problem is also solved by the second version of the window protection device with at least one opening leaf against unauthorized entry, which contains a grating with a hinged section and with a locking mechanism, designed to be fixed on the outside of the window so that the hinged section of the grating is located opposite the opening sash windows, while the locking mechanism is made in the form of eyes perpendicular to the plane of the grating with slots, one of which is fixed to the swing section of the lattice, and intended for placement in the holes of the eyelets of the bracket, the cross section of the middle section of which in the plane of the bracket has a thickness not less than the width of the slots of the eyes, and the cross section of the middle section in the plane transverse to the plane of the bracket, has sections whose thickness is less than the width of the cuts of the eyes, moreover, the length of at least one extreme portion of the bracket is greater than the distance from the eyes to the plane of the window.

The locking mechanism may have a limiter of rotation of the bracket in the direction of the grill, made, for example, in the form of a horizontal partition located opposite the extreme portion of the bracket.

The technical result manifested as a result of using each of the proposed devices of the group is to increase the simplicity and convenience of unlocking the grill, as well as to simplify the manufacture of the locking mechanism.

The essence of the proposed group of inventions is illustrated using the drawings. Figure 1 shows a fragment of a window with a swing grate and a locking mechanism in the locked state according to the first embodiment of the invention, figure 2 shows a view of the locking device in the first embodiment for calculating the minimum allowable handle length, figure 3 shows a side view of a fragment windows with a locking mechanism in the locked state according to the first embodiment of the invention, figure 4 shows the locking mechanism of the device according to claim 2, figure 5 shows a fragment of a window with a swing grating and a locking mechanism in the locked state in the second embodiment of the invention eniya, 6 (a, b) show two views of the locking device in the third embodiment.

The window protection device according to each of the options (see Figs. 1, 5) comprises a swing grate 2 fixed on the outside of the window and opposite the window sash 1, opening in the direction of arrow P, and a locking mechanism, which consists of eyes 3, one of which fixed on the hinged section of the lattice, and a curved rod 4, placed in the holes of the eyes. The eyes can be formed by holes in the frame holding the grill. The locking mechanism can be located in any part of the window, however, in order to ensure the safety of the glass of the window, it is desirable to arrange it so that the vertical link of the rod is located opposite the window frame.

According to the first embodiment of the invention (see FIG. 1), the rod is curved in the form of a bucket (hook) having a handle 5 of length Lp> 1.2 (L + 1.7D-2d), where L is the distance from the eye to the plane of the window, D is the diameter of the holes of the eyes, d is the diameter of the rod, while the eyes are parallel to the plane of the lattice. This semi-empirical formula is obtained on the basis of the following (see figure 2).

The minimum allowable bucket handle length Lp is determined by the selected maximum angle α between the handle and the window plane. At large angles α (> 60 °), the length Lp changes insignificantly. In practice, this means that tolerances on the length of the handle Lp and the distance between the window and the eyes L must be maintained with higher accuracy, which is very problematic in such a rough device as a grate. Therefore, the maximum angle α is selected at 60 °.

The minimum allowable length of the handle 8 in FIG. 2: L _p = dv, the distance from the eye to the sash surface L = ab, the diameter of the holes of the eyes D, the diameter of the rod d, the thickness of the eyes, including the gap between them t.

We denote er = x.

Then from the triangle bvg

From the hedgehog triangle

From (1) and (2)

From the triangle avd L + t / L _p = sin 60 °

Where from

Substituting (3) into (4), we finally obtain L _p = 1.2 (L + 1.7D-2d).

For normal sizes in practice, D = 10 mm, d = 8 mm, L = 100 mm, L _p = 121 mm. To fix the rod 4 opposite the selected section of the window in the eye, a groove 6 is made for placement in it of the part of the rod that is distant with respect to the handle.

According to a second embodiment of the invention (see FIG. 5), the rod 4 is bent in the form of a bracket, the cross section of the middle portion of which in the plane of the bracket has a thickness t _c1 not less than the width of the slots of the eyes t _p , and the cross section of the middle portion in a plane transverse to the plane of the bracket, has sections whose thickness t _{c2 is} less than the width of the slots of the eyes t _p , while the eyes 3 are located perpendicular to the plane of the grating 1 and slots 10 are made in each of them. The cross section of the staple bar can be of any shape (round, rectangular, etc.). The length of at least one extreme portion of the bracket 11 is greater than the distance from the eyes to the window plane.

The operation of the device in the first embodiment is as follows. To open the locking mechanism after opening the window sash, the handle 5 is turned clockwise (arrow C in figure 1), leading the curved part of the rod out of the eyelets. To close the locking device, the above actions are performed in the reverse order. When attempting unauthorized entry into the room from the outside of the grate, the handle 5 rests against the surface of the window sash when turning clockwise, without allowing the shutter to be opened without breaking the sash.

The operation of the device in the second embodiment is as follows. To open the locking mechanism after opening the sash, the bracket (rod 9) is turned clockwise for one of its extreme sections, turning the middle part of the bracket with the narrow side in the slot 10 of the eyes. To close the locking device, the above actions are performed in the reverse order. When attempting unauthorized entry into the room from the outside of the grate, one or both extreme sections of the bracket due to its length will turn against the surface of the window sash when turning clockwise, and when turning counterclockwise, they will rest against the stopper made from the side of the grate, not allowing the locking device.

Claims (4)

1. A device for protecting a window with at least one opening casement against unauthorized entry, comprising a grating with a hinged section and with a locking mechanism, designed to be secured from the outside of the window so that the hinged section of the grating is located opposite the opening window sash, while the locking the mechanism is made in the form of eyes parallel to the plane of the grating, one of which is fixed to the swing section of the grate, and designed to be placed in the holes of the eyes a rod curved in the form of a bucket, so that the curved part covers the upper part of the eyes, and the rod has a handle with a length Lp selected from the condition: Lp> 1.2 (L + 1.7D-2d), where L is the distance from the eye to the window plane, D is the diameter of the holes of the eyes, d is the diameter of the rod. 2. The device according to claim 1, characterized in that at least in one eye there is a groove for placement in it of the part of the rod that is distant with respect to the handle. 3. A device for protecting a window with at least one opening casement against unauthorized entry, comprising a grating with a hinged section and with a locking mechanism, designed to be secured from the outside of the window so that the hinged section of the grating is located opposite the opening window sash, while the locking the mechanism is made in the form of eyes perpendicular to the plane of the grating with slots, one of which is fixed to the hinged section of the grate, and intended for placement in the hole striae of the eye of the bracket, the cross section of the middle section of which in the plane of the bracket has a thickness not less than the width of the slots of the eyes, and the cross section of the middle section in the plane transverse to the plane of the bracket, has sections whose thickness is less than the width of the slot of the eyes, and the length of at least one extreme section of the bracket more distance from the eyes to the window plane. 4. The device according to claim 3, characterized in that the locking mechanism has a limiter of rotation of the bracket in the direction of the grill, made, for example, in the form of a horizontal partition opposite the extreme portion of the bracket.

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