RU2297505C1 - Flexible locking-sealing device - Google Patents

Abstract

FIELD: locksmith's work, in particular, locking-sealing devices, in which a flexible component, for example, a section of wire rope is used as the locking mechanism.

SUBSTANCE: the device has a section of wire rope with a rigidly fastened passive end, and a free end of the wire rope section passed through the locking mechanism, consisting of a body closed with the front and rear covers respectively with an inlet and outlet for the wire rope section, and with an inner surface, whose two opposite faces are made parallel, and the other two opposite faces are located at an angle relative to the spring-loaded separator with an axial hole for the section of the wire rope and positioned in the seats of the separator of the fixing components made in the form of two rollers engage able by their surface at locking with the faces positioned at an angle, and the rope section. The device is provided with a protective component indicating the manipulations and made in the form of a bulge positioned inside of at least one local molding, and with a restrictor of separator motion in the position prepared for locking, made in the form of symmetrically bent relative to the axis of the axial hole at an angle of a thin plate with a central hole and a vertex oriented in the direction of inlet of the rope section and with a flanging for a common fastening with the front cover. From the front the separator is made open, and cutouts mating the angle vertex are made in its lateral walls. The means for prevention of an unauthorized opening of the device is guaranteed by a combined use of the inlet in the front cover, restrictor of the separator travel and by beveled lateral walls of the separator.

EFFECT: enhanced reliability of object protection, convenience in handling.

5 cl, 13 dwg

Description

FIELD OF THE INVENTION

This invention relates generally to hardware and, in particular, to devices for locking and sealing the doors of railway cars, freight containers and vans, tank hatches, helper wheels for grain carriers, warehouses, warehouses, shops, stalls and other objects.

More specifically, the invention relates to locking and sealing devices in which a flexible element, for example, a piece of cable, is used as a contactor.

State of the art

A flexible locking and sealing device is known that comprises a cable segment with a rigidly fixed passive end and a free end of a cable segment that can be passed through a locking mechanism consisting of a housing closed by the front and rear covers, respectively, with inlet and outlet openings for the cable segment and with the inner surface, two opposite whose faces are made parallel, and two other opposite faces are located at an angle spring-loaded separator with an axial hole for a piece of cable and with the front and rear walls and the fixing elements protruding from it and made into the separator seats and protruding from it, made in the form of two rollers interacting with their surface when locked with angled faces and a cable segment. In this case, the spring is worn at one end on a protrusion made on the rear wall of the separator, and the other end rests on the back cover, and the passive end of the cable segment is fixed in the hole made in the housing by means of several crimping on each side of the housing.

The device has a means of preventing unauthorized opening.

It is made in the form of symmetrical diametrically located protrusions on the front wall of the separator, repeating the cable profile. The protrusions prevent the penetration of any objects of small thickness, but of comparatively sufficient stiffness to the rollers for their extraction and subsequent release of the cable segment, that is, unauthorized opening of the seal and access to the protected object (RF Patent for the invention No. 2221123, ЕВВ 39/02, G09F 3 / 03, Bull. No. 1).

However, the presence of a gap between the mating elements, that is, the length of the cable and the inlet beneath it, does not exclude the possibility of acting on the locking mechanism using, for example, a “pick”, in order to unauthorizedly open the device by pulling the length of the cable out of the housing.

The implementation of the inlet for the cable segment with tight tolerances, ensuring the passage of the cable segment, reduces the gap between the inlet and the surface of the cable, however, the relatively large spread of the cable tolerances practically negates tightening the tolerance on the inlet.

The division of cables into groups (selective assembly) significantly complicates and increases the cost of production.

The disadvantage of this device is that the locking elements in the separator under the action of a spring on the separator inoperative almost touch each other with their surfaces. As a result of this, in the initial stage of locking, it is necessary to make considerable efforts, skill, experience, and also unproductive to spend time on this operation in order to move the locking elements apart and tuck the free end of the cable segment between them.

The disadvantages also include the unstable position of the spring, worn at one end on a cylindrical protrusion made on the rear wall of the separator, and the other resting on the back cover.

In the process of rolling the lid into the housing along the contour, the probability of the spring displacing relative to the outlet in the rear cover and the decline of its front end from the protrusion on the rear wall of the separator is not excluded.

In addition, in the aforementioned known device, local crimping, which is, as you know, a recess with a flat surface in the lower part, can be opened by intruders with the subsequent release of the passive end of the cable segment for unauthorized access to the protected object and then skillfully closed. Moreover, it is not always possible to trace the fact of such an autopsy.

And, in addition, since the protrusions on the separator are made at the same time with it, then during the initial transmission (pushing) of the cable when locking the device, additional force is required.

A flexible locking and sealing device is known that comprises a cable segment with a rigidly fixed passive end and a free end of a cable segment that can be passed through a locking mechanism consisting of a housing closed by the front and rear covers, respectively, with inlet and outlet openings for the cable segment and with the inner surface, two opposite whose faces are made parallel, and two other opposite faces are located at an angle spring-loaded separator with an axial hole for a piece of cable and with the front and rear walls and the fixing elements protruding from it and made into the separator seats and protruding from it, made in the form of two rollers interacting with their surface when locked with angled faces and a cable segment. In this case, the spring is worn with one end on the protrusion made on the rear wall of the separator, and the other end is worn on the spring stabilizer, made in the form of a sleeve located between the separator and the rear housing cover. Moreover, the separator is equipped with a separator of rollers, made in the form of stops, symmetrically located relative to the axis of the axial hole, and the passive end of the cable segment is fixed in the hole made in the housing, through several crimping on each side of the housing. The device has a means of preventing unauthorized opening.

It is made in the form of a nozzle-ring with protrusions repeating the profile of the cable segment and a shoulder with which it is worn on an annular groove made on the front wall of the separator for its free rotation. The protrusions prevent the penetration of any objects of small thickness, but of comparatively sufficient stiffness to the rollers for their extraction and the subsequent release of the cable segment, that is, unauthorized opening of the seal and access to the protected object. And thanks to the rotation of the nozzle-ring on the separator, pushing the cable segment does not require additional efforts (Eurasian patent No. 004584, ЕВВ 39/02, G09F 3/03, 06/24/04).

The known device overcomes some of the disadvantages inherent in the device according to the first patent above.

So, for example, to some extent, the stability of the spring relative to the rear cover due to the spring stabilizer in the form of a sleeve freely placed between the separator and the rear cover; ease of separation of the rollers in the initial stage of locking is provided thanks to the stop-separator rollers placed in the landing slots of the separator.

However, the other disadvantages mentioned above remained, including:

- the possibility of releasing the passive end of the cable segment by opening the local crimping with subsequent termination after unauthorized access to the protected object;

- the possibility of recession of the front end of the spring with a protrusion on the separator when rolling the rear cover;

- the possibility of acting on the locking mechanism through the gap between the inlet in the front cover and the surface of the cable.

In addition, the presence of a stabilizer bush due to its free placement does not guarantee its displacement when rolling the back cover relative to the axial hole in the separator and the hole in the back cover, which presents some difficulties when locking the device. And since the back cover is placed on the open side of the case, i.e. from the exit side of the free end of the cable segment, the possibility of its opening by malicious exposure through the gaps in the outlet in the cover and the cable segment is not excluded, after which subsequent locking of the device is possible.

And, in addition, although the free rotation of the nozzle-ring on the separator facilitates the passage (pushing) of the cable when locking the device and does not require additional efforts, for easy rotation of the ring on the collar of the separator, their exact manufacture is required, which should be attributed to the disadvantages of the known means.

The technical result obtained by using the proposed device is the simplicity of design, while at the same time providing high reliability and maximum protection of the locked objects from unauthorized opening.

SUMMARY OF THE INVENTION

This technical result is achieved due to the fact that a flexible locking and sealing device containing a cable segment with a rigidly fixed passive end and a free cable end passed through a locking mechanism consisting of a housing closed by the front and rear covers, respectively, with the inlet and outlet openings for the segment cable and with an inner surface, the two opposite sides of which are parallel, and the other two opposite sides are located at an angle, spring-loaded dinner of the separator with an axial hole for the cable segment and with the front side and rear and side walls and the fixing elements located in the separator seats and protruding from it, made in the form of two rollers interacting with their surface when locking with the angled faces and the segment cable, while the spring is put on one end on a protrusion made on the rear wall of the separator, and the other end is put on the spring stabilizer, and a means of preventing unauthorized opening of the device moreover, the separator is equipped with a separator of rollers made in the form of stops, symmetrically located relative to the axis of the axial hole, and a front shoulder made on the front wall, and the passive end of the cable segment is fixed in the hole made in the housing, through several crimping on each side of the housing, the device equipped with a protective element indicating manipulation, made in the form of a protrusion located inside at least one local crimping, and a separator stroke limiter in the position Set for locking, made in the form of a thin plate symmetrically bent relative to the axis of the axial hole at an angle with a central hole and a vertex oriented in the direction of entry of the cable segment and flanged for joint fastening with the front cover, while on the front side the separator is open and cutouts are reciprocal to the apex of the corner of its side walls, while the spring stabilizer is integral with the rear cover, and the protrusion on the rear wall of the separator is provided with a shoulder for interaction with some end of the spring, and means to prevent unauthorized opening of the device provided by the combined use of the inlet opening in the front cover, the separator stroke limiter and the side walls of the separator with a bevel.

And also by the fact that the protrusion located inside the local crimping is made in the form of either a cone, or angular, or semicircular, or parallelepiped, or a cylinder.

And also the fact that the rear flange is equipped with a bevel.

And also the fact that the back cover on the lower side along the contour is equipped with a chamfer.

And also by the fact that the sealing information is applied to the outer surface of the housing.

Brief Description of the Drawings:

1 and 2 respectively show a General view and side view of a flexible locking and sealing device with a protrusion in the shape of a cone;

figure 3 and 4 is a fragmentary respectively General view and side view of the device with a protrusion in the shape of an angular;

5 and 6 are fragmentary, respectively, General view and side view of the device with a protrusion in the shape of a semicircular;

7 and 8 are fragmentary, respectively, General view and side view of the device with a protrusion in shape in the form of a parallelogram;

Figures 9 and 10 are fragmentary, respectively, General view and side view of the device with a protrusion in shape in the form of a cylinder;

figure 11 - limiter stroke separator;

in Fig.12 is a section along aa in Fig.11;

Fig.13 is a separator.

Preferred Embodiment

A flexible locking and sealing device comprises a cable segment 1 with a rigidly fixed passive end 2 and a free end 3 of the cable segment that can be passed through a locking mechanism consisting of a housing 4 closed by front 5 and rear 6 covers, respectively, with input 7 and output 8 openings for the cable segment and with an inner surface whose two opposite faces 9 are parallel and the other two opposite faces 10 are angled (i.e., the inner surface in the cross section has the shape of a rectangle ), spring-loaded spring 11 of the separator 12 with an axial hole 13 for the length of the cable and with the front side 14 and the rear 15 and the side walls and placed in the seating sockets 16 of the separator 12 and the fixing elements protruding from it, made in the form of two rollers 17 interacting with their surface when locking with faces 10, located at an angle, and a piece of cable 1. The longitudinal axis of the rollers 17 when placed in the mounting sockets 16 of the separator 12 are parallel to each other, and the plane in which they are located is perpendicular to the axial bore stiyu 13. This spring 11 is fitted with one end fixed to the protrusion 18 formed on the rear wall 15 of the separator 12 and which is provided with a flange 19 with a chamfer. And at the other end, the spring is worn on the spring stabilizer 20, made in the form of a sleeve 21 integral with the rear cover 6, i.e. the sleeve 21, on which the spring is worn, and the rear cover 6 are a single unit - the stabilizer 20. In this case, the rear cover on the lower side along the contour is provided with a chamfer 22. The separator 12 is equipped with a roller separator made in the form of stops 23, symmetrically located relative to the axis of the axial hole 13, and the passive end 2 of the cable segment 1 is fixed in the hole 24 made in the housing by means of several local crimping 25 on each side of the housing 4. In contrast to the prototype, the device is equipped with a protective element indicating manipulation with a thread made in the form of a protrusion 26 in the form of, for example, a cone (FIGS. 1 and 2), located inside at least one local crimping 25, while the number of crimping is preferably performed three to five. Moreover, two crimping on one side 27 of the housing 4, it is advisable to place in the interpressed space of three crimping, made on the other side 28 of the housing 4 (for the variant with five crimping).

The protrusion in shape can also be made either angular 29, or semicircular 30, or in the form of a parallelepiped 31, cylinder 32.

Thus, the presence of at least one local crimping of the protrusion increases the protective properties of the device, because it is impossible to open local crimping with subsequent discreet sealing outside the factory conditions. That is, the device has increased resistance to criminal hacking.

The protrusions can be located symmetrically inside the crimping, while any combination of the shapes of the protrusions is possible on the housing. For example, on one side of the housing, the protrusions can be made in the shape of a cone, and on the other in the shape of a cylinder, etc. That is, they can be made in various combinations and combinations.

In addition, due to such local crimping, the crimping depth decreased from 2.8 mm to 2.5 mm. In this case, the pulling force of the passive end of the cable segment remains at the level normalized for a specific diameter of the cable segment.

Due to the implementation of the flange 19 with a chamfer on the protrusion 18 of the rear wall of the separator 12, the spring 11 is easily put on and does not fall when rolling the back cover 6, and due to the chamfer along the contour of the latter, the reliability of its fastening in the housing increases.

The implementation of the sleeve 21 - stabilizer in one piece with the back cover 6 not only ensures its coaxial placement relative to the axial hole 13 in the separator 12, and therefore easy threading of the cable segment, but also eliminates the possibility of opening the cover in case of malicious exposure through the gaps in the outlet 7 and a piece of cable. The latter for convenience of refueling is equipped with a tip 33 (either soldered with the formation of a conical end), and its passive end 2 is either provided with a sleeve 34, or pre-soldered.

Necessary sealing information, for example, serial number, railway code, etc., can be applied to the outer surface of the housing.

The device is equipped with a stroke limiter 35 of the separator in the position prepared for locking, made in the form of a symmetrical bent symmetrically about the axis of the axial hole at the angle of a thin plate with a central hole 36 and a vertex oriented in the direction of entry of the cable segment 1, and with a flange 37 for joint fastening with the front cover 5 (for example, by rolling along the contour).

At the same time, the separator is made open on the front side, and reciprocal top cutouts 38 are made in its side walls.

The separator stroke limiter allows you to increase the separation (dilution) of the rollers to the moment of locking by the maximum possible value, for example 3 mm or more. This, firstly, provides easy transmission of a cable segment when locking the device, and also allows the use of a cable tip with a less sharp end (more technologically advanced to manufacture).

The device for preventing unauthorized opening of the device is ensured by the combined use of the front cover inlet, the separator stroke limiter 35 and the separator side walls with bevel 39. Due to this, the locking mechanism — locking rollers located behind two “obstacles-obstacles” (the cover and the limiter), can be affected, by means of any objects inserted into the gap between the cable and the holes in the cover and stopper, and to carry out the movement of the fixing elements - rollers in in the opposite direction to the circuit, i.e. it is practically impossible to free a piece of cable from jamming. In this case, the limiter performs three functions:

- increases the gap between the locking elements - rollers for easier (free) transmission of the cable segment;

- serves, along with other elements, as a means of preventing unauthorized opening;

- serves as an indicator of attempts to unauthorized opening the device by force. What will be discussed in more detail below.

If any object penetrates into the structural gaps between the turns of the cable segment and the holes in the front cover and limiter, it will be deflected by bevels 39 and sent under the fixing elements - rollers, where it will be clamped (pinched) between one of the rollers and the cable segment. Which also does not allow you to remove the locking and sealing device without destroying it and then make a re-closure.

Flexible locking and sealing device is used as follows.

The free end 3 of the cable segment is passed through the eyes of the locking unit, and then its free end is passed through the locking mechanism. The tip 33 of the cable segment 1 passes through the inlet 7 in the front cover 5 and into the central hole 36 in the stopper 35 and enters the axial hole 13 in the separator 12. Due to the guaranteed clearance between the rollers 17 formed by the roller separator - stops 23 and the separator travel limiter, the tip 33 easily fits between them. Further progress requires only a little effort. The separator 12 with rollers 17 under the action of this force compresses the spring 11 and moves in the inner cavity of the housing 4 from the section 40 with a smaller cross section to the section 41 with a large cross section. While the separator 12 side edges in contact with parallel faces 9 of the inner surface of the housing. The rollers 17 exit from the axial hole 13 in the separator, freeing the passage for a piece of cable. In this case, the rollers with cylindrical lateral surfaces simultaneously interact with a segment of the cable and with two opposite, angled faces 10 (working faces). Next, the tip 33 enters the sleeve 21 of the stabilizer 20 and then into the outlet 8 in the rear cover 6. Since the stabilizer is made as a unit in the form of a sleeve and a rear cover, its alignment with the axial hole 13 in the separator is guaranteed. And given the fact that the tip 33 is a rigid body and has a length slightly greater than the distance between the end face of the protrusion 18 and the front end of the sleeve 21 (Fig. 1), it is guaranteed to sink into the sleeve 21.

After the loop of the cable segment 1 is selected and the locking mechanism approaches the lugs, it is preferable to pull the locking mechanism slightly back. The rollers 17 interacting with a cylindrical lateral surface with angled faces 10 are slightly immersed in the cable segment 1. When trying to forcefully remove the cable segment 1 by pulling back the locking mechanism, the rollers 17 in the separator 12, moving to the section 40 with a smaller cross section, begin to stop the cable segment 1 with greater force. Moreover, the greater the force exerted on the locking mechanism, the further the locking elements — rollers 17 together with the separator 12 move towards the section 40 with less the cross-section of the inner surface and the lower the rollers 17 fall into the axial hole 13 of the separator 12, the more the cable segment 1 is locked.

In the event of further exposure by the above method, the limiter is destroyed (its third function is the appointment), since it is made of a thin plate, which subsequently allows (if necessary) to establish the fact of an unauthorized attempt to open the device, while the hole 36 in the limiter 35 is deformed and which - Any objects inside the case are blocked, as a result of which the locking properties of the device are violated and its reuse is excluded.

The locking elements - the rollers 17 can be equipped with either an annular groove in the middle, or alternating annular protrusions and depressions and spikes in the middle part, as well as longitudinal knurling on the sides of the forming length of the roller. This helps to increase the resistance to release the length of the cable from the locking mechanism.

The authorized opening of the device is carried out by biting a segment of the cable by known means, for example, a cable cutter.

The flexible locking and sealing device offered by us reliably protects the object, is easy to use and easy to manufacture.

Claims (5)

1. A flexible locking and sealing device containing a cable segment with a rigidly fixed passive end and a free cable end that can be passed through a locking mechanism consisting of a housing closed by the front and rear covers, respectively, with inlet and outlet openings for the cable segment, and with an inner surface, two the opposite faces of which are parallel, and the other two opposite faces are located at an angle spring-loaded separator with an axial hole for a piece of cable and on the front sides and the back and side walls and the fixing elements protruding from it and made into the separator sockets and protruding from it, made in the form of two rollers interacting with their surface when locking with angled faces and a piece of cable, while the spring is put on one ledge by one end, made on the rear wall of the separator, and the other end is worn on a spring stabilizer, and a means of preventing unauthorized opening of the device, and the separator is equipped with a roller separator made in the form of stops, located symmetrically relative to the axis of the axial hole, and the passive end of the cable segment is fixed in the hole made in the housing by means of several crimping on each side of the housing, characterized in that the device is equipped with a protective element indicating manipulation, made in the form of a protrusion located inside at least at least one local crimping, and the separator stroke limiter in the position prepared for locking, made in the form of an axially bore symmetrically bent relative to the axis at an angle scrap of a thin plate with a central hole and a vertex oriented in the direction of entry of the cable segment and flanging for joint fastening with the front cover, while the separator is open on the front side and reciprocal tops of the cutout angle are made in its side walls, while the spring stabilizer is made integral with the rear cover, and the protrusion on the rear wall of the separator is provided with a shoulder for interaction with one end of the spring, and a means of preventing unauthorized opening of the device is provided with kupno using the opening in the front cover, the separator stroke limiter and the side walls of the separator with a bevel. 2. The device according to claim 1, characterized in that the protrusion located inside the local crimping is made in the form of either a cone, or angular, or semicircular, or parallelepiped, or a cylinder. 3. The device according to claim 1, characterized in that the bead is provided with a chamfer. 4. The device according to claim 1, characterized in that the back cover on the lower side along the contour is provided with a chamfer. 5. The device according to claim 1, characterized in that the sealing information is applied to the outer surface of the housing.

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