RU2611481C1 - Device for limiting flap turning angle with assembly 0-shaped slider lug - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: device for limiting the flap turning angle with the assembly 0-shaped slider lug relates to bolts and other locking devices for flaps, mostly for doors and windows in buildings, in particular to devices for limiting the opening angle of doors and flaps and fixing them in the open position by means of movable elements arranged on a frame and a flap, which are hitched and unhitched to allow the further opening only in case the flap is closed. The device comprises the hitch and the plate adapted for a hinge joint, with the groove having a flared end facing the hinge joint. The hitch is made movable, with the possibility to move longitudionally and to pass through the flared groove end and to hitch on the longitudinal groove edges when opening the flap. The 0-shaped slider is arranged on the plate, with the possibility to move along it, which is made assembly. The assembly 0-shaped slider is provided with at least one lug with the possbility for the hitch to pass through it.

EFFECT: device improvement.

2 cl, 20 dwg

Description

The invention relates to bolts and other locking devices for sashes, mainly for doors or windows of buildings, in particular to devices for restricting the opening of doors and sashes and for fixing them in the open position using movable elements located on the frame and sash, coupled and disengaged to provide further opening only if the sash is closed.

In this description, the terms are used in the following sense in accordance with the source of information [1]:

“Casement” is a general term for pivoting, sliding or otherwise moving doors or windows. This term also covers other movable structures, such as drawers, lids of drawers, car trunks, casings or hoods, to which control fasteners, snap-fit or locking devices belonging to this class can be mounted;

“Frame” - the element to which the sash is attached. This term does not include the frame that forms part of the sash, such as window binding, but in some cases the frame itself may be a sash;

“Deadbolt" is a sliding, pivoting or otherwise moving element that is usually located on a door to keep it closed by engaging with a holder on the frame. It is manually actuated using a key or other device;

“Pad” - an element in the form of a latch, hook, etc., pivotally mounted on a frame or sash, used to lock the sash, for example using a padlock.

The term “box” is understood in accordance with the source of information [2]:

“Box” - an assembly unit of a window or door block of a frame structure designed for hanging sashes or paintings, fixedly fixed to the walls of a window or doorway.

The term "housing" is understood in accordance with the source of information [3]:

"Housing" is the main part of the product, inside of which the details of its mechanism are placed (explanation of the author of this description of the invention: the housing in this description refers to both the guide housing for placing a bolt with a hook in it, and a cover with a groove in which, i.e. pads, parts of the rack-and-pinion ratchet mechanism are placed in the form of a spring-loaded dog and a slider, closed by a 0-shaped slider when assembling the device).

The following terms are understood in accordance with the source of information [4]:

"Lap" - adv. Laying the edge or end of something is usually on the edge or end of the other;

"Hook" - a device that captures, hooks something, or an object that you can catch on;

"Jamb" - each of the side parts of a door or window frame;

“Depress” - action according to the meaning of the verb “depress”;

“Squeeze” - pressing, advancing, forcing to move, retreat; push back;

“Plate” - diminutively to the plate; a thin flat piece of metal, glass, etc .;

"Slider" - 3. Tech. A detail of a mechanism sliding back and forth over any surface in a straight line direction;

“Slider” - 3. Tech. The same as the slider (3 digits);

“Strip” - diminutive to “strip”;

“Strip” - an oblong, elongated piece of something (fabric, metal, etc.);

“Eye” - A hole into which something is inserted, pushed, threaded (examples: ax eye, boiler eye). Part of machine parts equipped with an opening for connection with other parts.

“Frame” - a quadrangular or other form of fastening from bars, planks, for inserting, framing something.

The terms "box" and "frame" in this description of the invention are understood as synonyms.

The following terms are understood in accordance with the source of information [5]:

“Ledge” is the protruding part of something;

"Groove" - a narrow slot or recess in which a protrusion of another object is inserted during bonding;

“Plate” - a flat strip of solid material; “Slot” - through slotted hole;

"Prefabricated" - 3. Composed of individual finished elements, parts; based on the application of such details.

"Well" - a narrow hole, a gap; keyhole (key hole).

In this description and the claims, the concept of “0-shaped slider” should be understood as “slider 0-shaped in cross section, as in the cross section it has a shape resembling an elongated number 0”.

In this description and the claims, the concept of “left wall of the 0-shaped slider” should be understood as “the wall of the 0-shaped slider located on the side of the lining facing the guide body, that is, directed towards the guide body, in which the deadbolt is located with a hook on the end. "

In this description and the claims, the term "right wall of the 0-shaped slider" should be understood as "the wall of the 0-shaped slider located on the side of the lining opposite to the guide body, that is, directed away from the guide body in which the deadbolt is located with a hook on the end. "

A device for limiting the angle of rotation of the sash, called "door chain". The door chain contains a chain, which at one end (the last link) is attached to the base plate with holes for fasteners (screws or screws) to fix the chain to the jamb, and a hook with a spherical or mushroom-shaped thickening is fixed at the other end of the chain. The device also contains a locking plate with a groove having an extension at one end and holes for fasteners (screws or screws) for rigidly fixing the locking plate on the casement by expanding the groove in the opposite direction from the edge of the casement. The expansion in the groove serves to introduce a spherical or mushroom-shaped thickening of the hook into engagement with the edges of the groove in order to provide a limited angle of rotation of the leaf and to withdraw the spherical or mushroom-shaped thickening of the hook from the meshing with the edges of the groove to ensure that the leaf opens completely [6], [7].

This known device has the following three technical disadvantages. Firstly, it can only be used for shutters that open inside the room, since the locking plate cannot be fixed on the jamb due to its sufficiently long length due to the large length of the groove made in it, and the jamb is both wood and metal. has a significantly smaller transverse thickness. Secondly, the chain can be eaten with nippers, since the chain links, like the other parts of the device, are in practice made of annealed plastic steel and are not quenched after the manufacture of the device. Thirdly, with a sufficiently powerful jerk, some chain link (weakest) can break due to a small cross section and internal defects (microcracks or microcracks) in the metal. The first technical drawback leads to a decrease in the area of use of the device, and the second and third to reduce the safety of operation.

A device is known for fixing an ajar door or window that contains a base, a locking element, a locking strip and a connecting element, and is characterized in that the connecting element is made of flexible material and is permanently connected to the base and the locking strip by means of a conical fixing screw. As a connecting element, a metal and non-metal rope (cable) can be used. The locking bar has a figured hole corresponding in shape to a T-bolt, locking recesses for additional (second degree) fixing the T-bolt in the locked position and a pusher with a spring [8].

A technical drawback of this device is that an attacker can easily disengage the T-bolt from the locking plate by sticking his hand in the doorway and turning the T-bolt 90 degrees, previously pressing it against the action of the spring-loaded pusher, which drastically reduces safe operation of this device, since the attacker will not be able to resist children, women and the elderly. To eliminate this technical drawback, the maximum clearance (opening) of the ajar door should be narrow enough so that the palm does not crawl, for example, not more than 4 cm. But with such a narrow clearance (opening) of the ajar door, not only a small overview is created, but also the inconvenience of communicating with the visitor (by visitors) and receiving from them (for example, postmen or couriers) delivered small-sized items or parcels.

A device for limiting the angle of rotation of the sash, called "chain loop", containing the plate with a hinge, made in the form of an elongated hinge with a groove having an extension at the end facing the hinge (in fact, this is a locking plate that performs the same functions, as in the above-described device "door chain", but not fixed rigidly, but pivotally, that is, with the possibility of rotation). The swivel plate (thanks to the hinge mount) is mounted on a jamb. The device also contains a hook with a spherical or mushroom-shaped thickening, which is rigidly attached to the sash that opens inward, with the possibility of catching the lining for it by putting the lining with the extended end of the groove on the spherical or mushroom-shaped thickening of the hook with the sash completely closed. Upon subsequent opening of the sash inward, the hook moves into the groove of the lining and spherical or mushroom-shaped thickening engages with the edges of the groove, which ensures a limited angle of rotation of the sash (in fact, the hook here performs the same functions as the hook in the “door chain” device, only fixed motionless) [9].

The technical disadvantage of this device is that the hook acts as a spherical or mushroom-shaped thickening over the edge of the surface on which it is rigidly fixed. This leads to the fact that manufacturers and suppliers recommend installing this device only on leafs that open inward, since when installing on leafs that open outward, a hook with a spherical or mushroom-shaped thickening must be rigidly fixed to the jamb. At the same time, the hook along with a spherical or mushroom-shaped thickening will constantly protrude beyond the inner edge of the jamb, which not only has an unaesthetic appearance, but also reduces the width of the door frame passage, and also creates a danger of people passing by catching it. Thus, the disadvantages of this device include a low field of application (only for leafs that open inward), as well as an unaesthetic appearance and increased danger of operation when installed on leafs that open not only outward, but also inward.

A device for limiting the angle of rotation of the sash (option 3), adopted as a prototype, comprising a pivotally mounted cover with a longitudinal groove having an expanded end facing the hinge, and a hook made movable with the possibility of longitudinal movement and passage through the extended end groove, followed by engagement, at least one edge of the longitudinal groove along its entire length when opening the sash, while the 0-image is worn on the cover plate with the ability to move along it a slider, moreover, in both walls of the 0-shaped slider it is made along the hole with the possibility of the hook passing through these holes and through the extended end of the longitudinal groove when it is placed between these holes [10].

The disadvantage of this device is the limited technological capabilities of manufacturing a 0-shaped slider, which is due to the fact that the 0-shaped slider is an integral part.

The objective of the invention is to create a new, patentable device to limit the angle of rotation of the sash, not having the above disadvantages of the prototype and analogues and, accordingly, ensuring the achievement of the following technical result, namely:

- expanding the technological capabilities of manufacturing a 0-shaped slider by executing it prefabricated;

- providing the ability to disassemble and assemble the 0-shaped slider during operation of the device to limit the angle of rotation of the sash in order to repair it and perform preventive maintenance.

Another objective of the invention is the expansion of the arsenal of technical means for a similar purpose.

The objectives of the invention are solved and technical results are achieved by the fact that in the device for limiting the angle of rotation of the sash with the eye of the prefabricated 0-shaped slider, comprising a hinged plate with a longitudinal groove having an expanded end facing the hinge and a hook made movable with the possibility of longitudinal movement and passing through the expanded end of the groove with subsequent engagement, at least one edge of the longitudinal groove along its entire length when opening the sash, as well as a 0-shaped slider, worn on the pad with the ability to move along it, and in addition to this (unlike the prototype), the 0-shaped slider is prefabricated and equipped with at least one eye with the possibility of passing hooks through it.

To expand the technological capabilities of manufacturing and to provide the ability to disassemble and assemble the 0-shaped slider during operation of the device, the 0-shaped slider is made of two rigidly connected parts, one of which is the body and the other is the lid, either the lid or the body is provided with an eye or the cover and the housing, the hook is made at the end of the bolt, on which the handle is rigidly fixed, the bolt with the possibility of longitudinal movement is placed in the guide housing, in which the longitudinal well is made with the possibility of th movement therealong handle bolt, plate is formed as a plate, and hinging a door or window hinge, the hook is adapted to engage behind the two groove edges.

It should be noted that the concepts of “housing” and “cover” for designating parts from which a prefabricated 0-shaped slider can be made are used in this description of the invention solely to distinguish these two parts from each other. But at the same time, the concept of “housing” is used for parts of a more complex shape, and the concept of “cover” for parts of a more simple form, which can be made in the form of a rectangular plate.

New features of the invention, together with known features form an inextricable aggregate, which allows to solve the problems of the invention and achieve the above technical results.

Indeed, expanding the technological capabilities of manufacturing a 0-shaped slider by making it prefabricated is ensured by the fact that, in addition to the known features of the prototype, the 0-shaped slider is made prefabricated and equipped with at least one eye with the possibility of passing a hook through it.

The implementation of the 0-shaped slider prefabricated, for example, from two parts of a simple shape, rigidly connected to each other or rivets, or spot welding, or screws (to enable disassembly of the 0-shaped slider with subsequent assembly), allows you to expand technological capabilities through the use of high-performance stamping operations, for example, from steel strips or sheets of parts of simple form for manufacturing and subsequent assembly, and, if necessary, disassembling the 0-shaped slider in order to repair and perform it maintenance work during operation of the device for limiting the angle of rotation of the leaf with an eye precast 0-shaped slider.

A device for limiting the angle of rotation of the sash with the eye of the prefabricated 0-shaped slider, being new, expands the arsenal of technical equipment for a similar purpose, which is additionally one of the objectives of the invention.

Thus, all these objectives of the invention are solved, and technical results are achieved by a combination of known (restrictive) and new features.

It should be noted that all the main objectives of the invention have been solved, and technical results are achieved using all the features of the independent claim.

A preferred embodiment of certain features of the invention is indicated in the dependent claims.

A non-limiting embodiment of the present invention is described by way of example to illustrate the claims, while the proportions of some small elements are not respected for their sharper image.

In FIG. 1 shows a perspective view of a device for limiting the angle of rotation of the sash with the eye of the prefabricated 0-shaped slider in the initial state, in which the lining is in contact with the sash opening outward.

In FIG. 2 shows the same as in FIG. 1, but with the bolt hook extended outward (beyond the edge of the joint).

In FIG. 3 shows the same as in FIG. 2, but in the slightly open position of the sash by the length of the groove in the cover plate, which prevents unauthorized passage into the room.

In FIG. 4 shows a rectangular projection of the left view (with respect to the sash, if you face it) with the position of the lining, turned to contact with the jamb.

In FIG. 5 is a view A of FIG. four.

In FIG. 6 is a view B of FIG. four.

In FIG. 7 shows a section along BB in FIG. 4 with a contour (located beyond the section plane) of the extended end of the groove and the eyes of the cover of the prefabricated 0-shaped slider.

In FIG. 8 is a view G of FIG. 5.

In FIG. 9 as in FIG. 6, a top view (view B) of FIG. 4, but with the bolt hook extended outward through the widened end of the lining groove and the eye of the cover of the prefabricated 0-shaped slider.

In FIG. 10 shows a section along DD in FIG. 9.

In FIG. 11 is a view Ε in FIG. 9, which shows the engagement in the lumen of the lug eyes of the cover of the prefabricated 0-shaped slider.

In FIG. 12 shows a section along FJ in FIG. eleven.

In FIG. 13 as in FIG. 9 and FIG. 6, a top view is shown (view B in FIG. 4), but in the ajar position of the sash with a securely fixed cover with a hook.

In FIG. 14 shows a cross-section along II in FIG. 13.

In FIG. 15 shows a section similar to that of BB in FIG. 4, but for the variant with the eye of the housing of the prefabricated 0-shaped slider, which shows the contours (located beyond the section plane) of the eyes of the body of the prefabricated 0-shaped slider and the extended end of the groove.

In FIG. 16 is a view similar to that of FIG. 13 (view B in FIG. 4), but for the case with an eye of the housing of the prefabricated 0-shaped slider, where the sash is shown in the ajar position with the latch securely fixed using a hook.

In FIG. 17 shows a section along KK in FIG. 16 for the version with an eye of the housing of the prefabricated 0-shaped slider.

In FIG. 18 shows a section similar to that of BB in FIG. 4, but for the variant with the body eye and the cover eye of the prefabricated 0-shaped slider, where the contours (located beyond the section plane) of the eyes of the body of the prefabricated 0-shaped slider, the widened end of the groove and the eyes of the cover of the prefabricated 0-shaped slider are shown.

In FIG. 19 is a view similar to that of FIG. 13 (view B in FIG. 4), but for the case with an eye of the body and an eye of the cover of the prefabricated 0-shaped slider, where the sash is shown in the ajar position with the latch securely fixed with a hook.

In FIG. 20 shows a cross-section along LL in FIG. 19 for the variant with the body eye and the cover eye of the prefabricated 0-shaped slider.

A device for limiting the angle of rotation of the sash with the eye of the prefabricated 0-shaped slider comprises a cover 1 with a hinge 2 and a groove 3 of the same width ending with an expanded end 4 facing the hinge 2, which is configured to rotate the lining 1 in the form of a door hinge and rigidly fixed with fasteners 5 on the leaf 6, which opens outward. The device also contains a deadbolt 7, placed in the guide housing 8 with the possibility of longitudinal movement. In the guide body 8, a longitudinal well 9 is made with the possibility of moving along it a handle 10, rigidly fixed on the deadbolt 7, at one end of which a hook 11 is made with the possibility of passing through the extended end 4 of the groove 3 and engagement for both longitudinal edges of the groove 3 using the protrusions 12 and 13. The guiding body 8 with the help of fasteners 14 is rigidly fixed on the jamb 15 with the possibility of the hook 11 passing through the extended end 4 of the groove 3. On the cover 1 with the possibility of moving along it is placed a prefabricated 0-shaped crawl nok formed composite (collecting) of two parts, one of which is a housing 16, and the other - a cover 17 which is flat in the form of a plate (can be in the form of a rectangular plate, not shown in FIGS.). The housing 16 and the cover 17 are rigidly connected to each other, for example, using connecting rivets 18 (can be connected by spot welding or screws if necessary, in the latter case, their separation during operation of the device). The cover 17 of the prefabricated 0-shaped slider 16-17 (hereinafter referred to as the prefabricated 0-shaped slider indicating through the dash both parts numbers from which it is assembled) is provided with an eye 19 with the possibility of passing hooks 11 through it after passing the extended end 4 of groove 3 For the variant with the eye of the housing of the prefabricated 0-shaped slider (Fig. 15, Fig. 16, Fig. 17), the housing 16 of the prefabricated 0-shaped slider 16-17 is provided with an eye 20 with the possibility of the passage of the hook 11 through it and then through the extended end 4 groove 3. For version with eye corp. CA and the eye of the cover of the prefabricated 0-shaped slider (Fig. 18, Fig. 19, Fig. 20) the housing 16 of the prefabricated 0-shaped slider 16-17 is equipped with an eye 20, and the cover 17 of the prefabricated 0-shaped slider 16-17 is provided with an eye 19 with the possibility of the passage of the hook 11 sequentially through the eye 20 of the housing 16, the extended end 4 of the groove 3 and then through the eye 19 of the cover 17.

A device for limiting the angle of rotation of the leaf with the eye of the prefabricated 0-shaped slider when used on a leaf opening outward is used as follows.

The cover 1 with a hinge 2 using fasteners 5 (screws or screws) is rigidly fixed to the leaf 6. On the jamb 15 using the fasteners 14 are rigidly fixed guide body 8 of the bolt 7 with the handle 10 and the hook 11 with the possibility of the latter passing through the extended end 4 the groove 3 in the lining 1 after turning the lining 1 around the hinge 2 until it touches the jamb 15 or the end of the guide body 8 (Fig. 1, Fig. 2). If there is a need to open the sash 6 with a limited angle of rotation, the cover 1 is rotated around the hinge 2 until it touches the jamb 15 or the end of the guide body 8, while the eye 19 of the cover 17 is placed (Fig. 4-8) opposite the extended end 4 of the groove 3 and hooks 11 (in Fig. 15-17 for the variant with the body eye of the prefabricated 0-shaped slider, the placement of the eye 20 of the housing 16 opposite the extended end 4 of the groove 3 and the hook 11 is shown, and in Figs. 18-20 for the variant with the body eye and the eye caps fail The placement of the eye 20 of the housing 16 and the eye 19 of the cover 17 opposite the expanded end 4 of the groove 3 and the hook 11) is shown for the 0-shaped slider, for which the structural unit from the pre-assembled 0-shaped slider 16-17 is previously moved to the corresponding position on the cover 1, moreover, to facilitate the installation of this structural unit in the desired position on the pad 1 near the hinge mount 2 can be made ledge (not shown), in contact with, for example, the cover 17 of the prefabricated 0-shaped slider 16 -17, the eye 19 of the lid 17 is located opposite the widened end 4 of the groove 3 and the hook 11 (in this case, for the variant with the body eye of the prefabricated 0-shaped slider, the eye 20 of the body 16 is placed opposite the expanded end 4 of the groove 3 and the hook 11, as shown in FIG. 15, and for the variant with the body eye and the eye of the cover of the prefabricated 0-shaped slider, the eye 20 of the body 16 and the eye 19 of the cover 17 are located opposite the expanded end 4 of the groove 3 and the hook 11, as shown in FIG. 18) when the lining 1 is in contact with the jamb 15 or the end face of the guide body 8. Then, the bolt 7 by the handle 10 is moved along the guide body 8 until the hook 11 exits through the expanded end 4 of the groove 3 and through (possibly partially) the eye 19 of the cover 17 ( for the variant with the body eye of the prefabricated 0-shaped slider, the hook 11 extends through the extended end 4 of the groove 3 after passing through the eye 20 of the body 16, as shown in Fig. 16, and for the variant with the body eye and the eye of the cover of the prefabricated 0-type slider, the hook eleven comes out, possibly partially, through the eye 19 of the cover 17 after successively passing through the eye 20 of the housing 1 and the expanded end 4 of the groove 3, as shown in Fig. 19), while the handle 10 is moved to the end along the longitudinal well 9 (Fig. 3, Fig. 12). After that, the locks on the leaf 6 are opened (locks and an internal deadbolt, not shown in the drawings) and the leaf 6 is opened (Fig. 3, Fig. 13), while for the case with an eye 20 of the housing 16 of the prefabricated 0-shaped slider 16-17 this is shown in FIG. 16, and for the variant with the eye 20 of the housing 16 and the eye 19 of the cover 17 of the prefabricated 0-shaped slider 16-17, this is shown in FIG. 19. At the beginning of the rotation of the sash 6, the lining 1 with the longitudinal edges of the groove 3 engages with the protrusions 12 and 13 of the hook 11 (Fig. 14), so that the lining 1 is securely fixed to the bolt 7 (for the case with the eye 20 of the housing 16 of the assembly 0- shaped slider 16-17 this is shown in Fig. 17, and for the version with the eye 20 of the housing 16 and the eye 19 of the cover 17 of the prefabricated 0-shaped slider 16-17 this is shown in Fig. 20), thereby preventing the possibility of unauthorized entry into the room.

To return the lining 1 to its original state, in which it is leaned against the leaf 6, and the leaf 6 can be fully opened, it is necessary to perform the above steps in reverse order with the structural elements of the device to limit the angle of rotation of the leaf with the eye of the prefabricated 0-shaped slider.

Using the device to limit the angle of rotation of the sash with the eye of the prefabricated 0-shaped slider for the inward opening sash is carried out by performing the same sequence of actions as for the sash opening outward, with the difference that the lining 1 with the prefabricated 0-shaped slider 16-17 through the hinge 2 using fasteners 5 is rigidly attached to the jamb 15, and on the sash 6 is rigidly attached using fastening elements 14 of the guide housing 8, in which the bolt 7 is placed with a hook 11.

The device for limiting the angle of rotation of the sash with the eye of the prefabricated 0-shaped slider can be widely used for doors of residential premises, opening both outside and inside, in order to prevent intruders from posing as law enforcement agencies, social and medical welfare institutions , post offices, home management companies, trade organizations and so on.

A device for limiting the angle of rotation of the sash with the eye of the prefabricated 0-shaped slider can also be widely used for office doors, both external (entrance) and internal, in cases where, according to security regime rules, for example, for cash registers or weapon rooms, it is required to obtain or to issue a sufficiently large-sized correspondence or objects against signature, with the exception of being in the premises of a courier, postman or employee of the organization.

Information sources

1. Notes on Class 05 in the International Patent Classification 2013, Advanced Level in XML, Website: http: // wwwl . fips.ru/wps/portal/IPC/IPC20 13_extended_XML /? xml = http: // www1. fips.ru/IPC20 13_extended_XML / AIpc-20130101_subclass-E_XML / Aipc20130101-class_E.xml.

2. GOST 23166-99 WINDOW BLOCKS.

3. GOST 27346-87 Hardware-hardware. Terms and Definitions.

4. Dictionary of the Russian language: In 4 volumes / Academy of Sciences of the USSR, Institute of Russian. language; Ed. A.P. Evgenieva. - 3rd ed., Stereotype. - M.: Russian language, 1985-1988.

5. Ozhegov S.I. Dictionary of the Russian language: approx. 57,000 words / Under. ed. Doct. filol. sciences, prof. N.Yu. Swede. - 14th ed., Stereotype. - M .: Rus. lang., 1982. - 816 p.

6. GOST 5091-78, Hardware accessories for wooden windows and doors, types. - M.: Publishing house of standards. 1987.

7. Website: http://www.doorlock.ru/article/13.

8. RF patent for utility model No. 115392, Е05С 17/00, published on April 27, 2012.

9. Website: http://archie.com.ua/ru_c01_cepochka_dvernajal.html.

10. RF patent for the invention No. 2563750, ЕСС 17/02, published September 20, 2015, Bull. No. 26.

Claims (2)

1. A device for limiting the angle of rotation of the sash with the eye of the prefabricated 0-shaped slider, comprising a hinged cover plate with a longitudinal groove having an extended end facing the hinge, and a hook made movable with the possibility of longitudinal movement and passage through the extended end groove, followed by engagement, at least one edge of the longitudinal groove along its entire length when opening the sash, as well as a 0-shaped slider that is worn on the pad with the possibility moving along it, characterized in that the 0-shaped slider is made prefabricated and equipped with at least one eye with the possibility of passage through it hooks. 2. The device according to p. 1, characterized in that the 0-shaped slider is made of two rigidly connected parts, one of which is the body, and the other is the lid, either the lid or the housing, or the lid and the housing are provided with an eye, the hook is made at the end of the bolt, on which the handle is rigidly fixed, the bolt with the possibility of longitudinal movement is placed in the guide body, in which a longitudinal well is made with the possibility of moving the bolt handle along it, the cover is made in the form of a plate, and the hinge is in the form of a door or a window hinge, the hook being able to engage at both edges of the groove.

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