RU2312194C1 - Flexible locking-and-sealing device - Google Patents

Abstract

FIELD: ironmongery, particularly flexible locking-and-sealing devices including cable cuts as flexible members.

SUBSTANCE: device comprises cable cut having passive and free ends. Free cable cut end passes trough device body to create loop and is secured in the body by means of locking mechanism during device locking. Locking mechanism comprises two identical fixing members made as rollers installed in separator loaded with locking spring and arranged in body interior surface. The interior surface has flat slanted surfaces adapted to cooperate with fixing members. One end of locking spring is put on extension made on rear separator wall. Another end thereof is put on spring stabilizing means. Separator has roller divider. Device also has additional fixing means for locking mechanism fixation. The additional fixing means is made as L-shaped stop plate put on spring stabilizer by horizontal flange thereof. Vertical stop plate flange cooperates with rear separator wall as threaded arm is screwed in threaded orifice of the body after prior cable cut fixation with fixing members. The threaded orifice extends at acute angle to longitudinal cable cut axis, wherein the angle is measured in direction opposite to direction of force to be applied to cable cut during unauthorized device opening. Arm has part with narrowed cross-section.

EFFECT: improved device tamper protection and increased locking force.

6 cl, 5 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 the 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 an inner surface, two the opposite faces of which are made 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 eredney and rear walls and located in a receiving hole of the separator and protruding from it fixing elements made in the form of two rollers, interacting by its surface during locking with facets angled, and the segment cable. 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. (RF patent for the invention No. 2221123, ЕВВ 39/02, G09Р 3/03, Bull. No. 1.)

The presence of a gap between the mating elements, that is, the length of the cable and the inlet under 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 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. And in addition, since the protrusions on the separator are made at the same time with it, then during the initial passage (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 the 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 an inner surface, two the opposite faces of which are made 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 eredney and rear walls and located in a receiving hole of the separator and protruding from it fixing elements made in the form of two rollers, interacting by its surface during locking with facets angled, and the segment cable. 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. (Eurasian patent No. 004584, ЕВВ 39/02, G09F 3/03, 06/24/04.)

In the known device, some of the disadvantages inherent in the device according to the first patent above have been overcome: the stability of the spring relative to the back cover is improved due to the spring stabilizer in the form of a sleeve freely placed between the separator and the back cover; Ease of separation of the rollers in the initial stage of locking is ensured thanks to the stops-separators of the rollers located in the landing sockets of the separator.

However, the common drawback mentioned above, which is inherent in the known devices, affecting their security qualities, remains, namely, the possibility of influencing the locking mechanism through the technological gap between the inlet and the surface of the cable segment, as a result of which the possibility of reverse pulling of the cable segment from the housing during malicious exposure, which reduces the reliability of these devices and, therefore, their security qualities.

The technical result of the invention is to increase its security qualities and ensure high reliability of locking, taking into account the simplicity of design and ease of use.

SUMMARY OF THE INVENTION

Ensuring the specified technical result is achieved due to the fact that a flexible locking and sealing device containing a cable segment, one end of which is passive, and the second free end of the cable segment, when locked, is pulled through the hollow body with the formation of a loop and is fixed in it by means of a locking mechanism consisting of two identical locking elements made in the form of rollers mounted in a spring-loaded closure separator with front and rear walls and a through hole it, which is placed in the cavity of the housing having flat inclined surfaces with which the fixing elements interact and flat parallel surfaces, the housing having an inlet and an outlet, the latter being formed in the back cover that covers the cavity of the housing, while the longitudinal axis of the outlet and the inlet and the axis of the through hole and the cavity of the housing coincide, and the closure spring is worn at one end on the protrusion that is provided with the rear wall of the separator, and the other end on the spring stabilizer, The separator is equipped with a separator of rollers made in the form of stops, symmetrically arranged relative to the axis of the through hole, the device is equipped with additional locking mechanism locking, which is made in the form of an L-shaped locking plate, worn horizontal component on the spring stabilizer under the closing spring, and the vertical component, which is bent to the side of a flat inclined surface, after the formation of a loop of the minimum size and preliminary fixation of the cable segment, fixing interacts with the rear wall of the separator with elements when screwing a handle with a threaded section into a through threaded hole made in the housing, the latter being made at an acute angle to the longitudinal axis of the cable segment, measured in the direction opposite to the applied force to the cable segment when an unauthorized opening is attempted devices, and the handle has a section behind the threaded section with a reduced cross-section, made in the form of a truncated cone, with a smaller diameter facing to the threaded section and mating with a cone made on the rear side of the threaded section, while at least the vertical component of the retaining plate is made equal to the width of the inner cavity of the housing, and its length exceeds the distance between the inner surface of the back cover and the rear wall of the separator in the preliminary position fixing a piece of cable with fixing elements.

And also the fact that the parameters of the section with a reduced cross section are selected from the condition of breaking the handle when the necessary efforts are achieved by the end face of the threaded section through the vertical component of the retaining plate on the rear wall of the separator.

And also the fact that a through threaded hole is made on the side surface of the housing from the fastening side of the passive end of the cable segment.

And also the fact that the longitudinal axis of the through threaded hole and the aforementioned axis of the holes and body cavities lie in the same plane.

And also the fact that at least the threaded portion of the handle is made with increased hardness.

And also the fact that the spring stabilizer is made in one piece with the back cover.

Brief Description of the Drawings:

figure 1 is a front view of the claimed invention;

figure 2 is a side view;

figure 3 - locking plate, front view;

figure 4 is the same, a top view;

figure 5 - handle.

Preferred Embodiment

A flexible locking and sealing device contains a cable segment 1, one end 2 of which is passive, and the second free end 3 of the cable segment, when locked, is pulled through the hollow body 4 to form a loop and is fixed in it by a locking mechanism consisting of two identical locking elements made in the form of rollers 5 mounted in a spring-loaded closure 6 of the separator 7 with the front 8 and rear 9 walls and a through hole 10, which is placed in the cavity 11 of the housing 4 having opposite d to the friend are flat inclined 12 surfaces (faces located at an angle) with which the fixing elements interact, and opposite flat parallel 13 surfaces (faces located in parallel). The housing has an inlet 14 and outlet 15 openings, the latter being formed in the rear cover 16, which covers the cavity of the housing, and the first can be formed in the front cover 17, while the longitudinal axis of the output 15 and input 14 of the holes and the axis of the through hole 10 and the cavity 11 the cases 4 coincide, and the closure spring 6 is put on one end on the protrusion that is provided with the rear wall 9 of the separator 7, and the other end is put on the spring stabilizer 18, and the separator 7 is equipped with a roller separator made in the form of stops 19, symmetrically located data relative to the axis of the through hole 10.

In cross section, the internal cavity 11 of the housing has the shape of a rectangle. The locking elements of the rollers 5 are placed in the nests 20 of the separator 7 and protrude from them, interacting with flat inclined 11 surfaces (faces located at an angle), while the longitudinal axis of the rollers 5 are parallel to each other, and the plane in which they are located is perpendicular to the longitudinal the axis of the cable segment when it passes through the housing. The spring stabilizer 18 is made in the form of a sleeve 21 integral with the rear cover 16, i.e. the sleeve and the back cover are a single unit, which increases the protective properties of the product, because eliminates the possibility of opening the lid in case of malicious exposure through the gaps in the outlet 14 and the length of the cable. Fixing elements - rollers 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 latter for convenience of refueling is equipped with a tip 22 (or soldered with the formation of a conical end), and the passive end 2 of the cable segment is fixed in the hole 23 made in the tide 24 of the housing 4, by means of several crimping on each side of the housing. 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 additional fixation of the locking mechanism, which is made in the form of an L-shaped locking plate 25, by means of an opening made in the worn horizontal component 26 to the spring stabilizer 18 under the closure spring 6, and the vertical component 27, which is bent towards a flat inclined surface, after the formation of a loop of minimum size and preliminary fixation of the cable segment 1 by the locking elements, it interacts with the rear wall 9 of the separator 7 when the handle is screwed in for 28 s ezbovym portion 29 in a through threaded hole 30 formed in the housing 4. This last is satisfied at an acute angle "α" to the longitudinal axis of the cable length, measured in the direction opposite the direction of applied force to the cable segment 1 when trying to tamper the device. Moreover, the handle 28 has a threaded section 29 section with a reduced cross-section, made in the form of a truncated cone 31, a smaller diameter 32 facing the threaded section 29, mated with a cone 33, made on the rear side of the threaded section 29. In this case, at least the vertical component 27 of the locking plate 25 is made equal in width to the width of the inner cavity of the housing, and its length exceeds the distance between the inner surface 34 of the back cover 16 and the rear wall 9 of the separator in the pre-position second locking segment 1 cable fixing elements.

In this case, the parameters of the section with a reduced cross section are selected from the condition of breaking off the handle in the zone of smaller diameter 32 of the truncated cone 31 when the necessary forces of the end face 35 of the threaded section 29 are reached through the vertical component 27 of the retaining plate 25 on the back wall 9 of the separator 7.

A through threaded hole 30 is made on the side surface 36 of the housing from the fastening side of the passive end 2 of the cable segment 1, and its longitudinal axis and the mentioned axis of the holes and the cavity of the housing lie in the same plane.

At least the threaded portion 29 of the handle 38 is made with increased hardness to make it difficult to drill out of the threaded hole when attempting to maliciously penetrate the body and affect the locking mechanism.

The spring stabilizer is made in one piece with the back cover.

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 22 of the cable segment 1 passes through the inlet 14 in the front cover 5 and enters the through hole 10 in the separator 7. Due to the guaranteed clearance between the rollers 5, formed by the roller separator - stops 19, the tip 22 easily fits between them. Further progress requires only a little effort. The rollers 5 exit from the through hole 10 in the separator 7, freeing the passage for the cable segment.

After the free end 3 of the cable segment 1 comes out, it is pulled until a minimum loop is formed in the area of the locking unit (eyes) of the guard. In this position, the cable segment 1 is under the action of the closure spring 6 automatically fixed (locked) locking elements - rollers 5, which with their cylindrical side surfaces interact simultaneously with the side surface of the cable segment and with two opposite flat inclined surfaces 12, i.e. with angled faces, thereby preliminarily fixing the cable segment.

This ends the first stage of locking the device, providing high power characteristics of the interaction of the rollers with the cable segment due to the rigid fixation of the rollers 5 between the opposite faces of the inner cavity of the housing on the one hand and the lateral surface of the cable segment 1 on the other hand.

The position that the separator 7 occupies after preliminary fixing, and therefore its rear wall 9, is shown by thin lines, and, as you can see, the length of the vertical component 27 of the retaining plate 25 exceeds the distance between the inner surface 34 of the back cover 16 and the rear wall of the separator 7 ( figure 1).

However, due to the possibility of acting on the locking mechanism through the gap between the inlet and the surface of the cable, the device cannot provide high reliability.

It is not reliable enough during operation, when the cavity of the body can be filled with moisture, followed by freezing. In this case, conditions are created to facilitate the pulling of the cable segment from the device.

Means for additional fixation of the locking mechanism is used as follows.

The handle 26 is screwed into the through threaded hole 30 in the housing until the section with a reduced cross section made in the form of a truncated cone 31 is recessed into the threaded hole 30. In this case, the end face 35 of the threaded section 29 interacts with the retaining plate 25, moves it in the direction of the longitudinal axis of the cable segment 1. With further screwing of the handle 28, the upper section 37 of the locking plate 25, bending, begins to interact with the rear wall 9 of the separator 7 and move the separator with the locking elements s-rollers 5 into a zone with a smaller cross-section 38 into the body cavity.

The rollers 5 interacting with a cylindrical lateral surface with inclined surfaces 12 (angled faces) deform the lateral surface of the cable segment. Moreover, the greater the force exerted through the upper part 37 of the retaining plate 25 on the rear wall 9 of the separator 7 (with further screwing in of the handle), the further the locking elements-rollers 5 together with the separator 7 move towards the section 38 with a smaller cross section of the inner cavity of the housing and the more deform the lateral surface of the cable segment.

This ensures a guaranteed high locking force of the cable segment, and therefore, the impossibility of unauthorized opening of the device. Since when attempting an unauthorized opening by penetrating through the technological gap between the inlet 14 and the side surface of the cable segment with any thin object, albeit of sufficient rigidity, it is impossible to act on the elements of the locking mechanism in order to move them in the opposite direction to the extension of the cable segment, because the separator 7, as well as the entire locking mechanism is locked with a locking plate 25, the rigidity of which is significantly higher than the rigidity of the object for unauthorized opening.

Upon reaching the necessary efforts of the impact of the end face 35 of the threaded section 29 of the handle 28 through the vertical component 27 of the retaining plate 25 on the rear wall 9 of the separator 7, the handle breaks off. In this case, breaking off will occur in the mating zone of smaller diameter 32 of the truncated cone, in the form of which a section with a reduced cross section is made, with a cone 33 on the back of the threaded section 29.

Due to this, the entire section of the truncated cone 31 will remain on the detachable (breakable) handle, and will not protrude on the remaining in the threaded section, thereby excluding the possibility of forced force impact on it (the truncated cone) with the aim of unauthorized unscrewing of the recessed threaded section 29 in the housing. Thus, the impossibility of malicious penetration into the cavity of the housing for exposure in any way to the locking mechanism with the aim of unauthorized opening of the device is achieved.

Another circumstance that impedes the effect of the locking mechanism is the high hardness of the threaded section, which greatly complicates its drilling.

Another circumstance that prevents the locking mechanism from acting on the side of the threaded portion is the vertical component 27 of the retaining plate 25 with a width equal to the width of the housing cavity, since it completely closes the closure spring 6, preventing any objects from penetrating into it to act on her.

Since the vertical component 27 of the locking plate 25, as a result of the action of the end face 35 of the threaded portion 29, becomes blocked between the rear wall of the separator 7 and the rear cover 16, it is not possible to act on it with an object for malicious access to the locking mechanism.

The handle can be prefabricated with the appropriate marking, duplicating the sealing information applied to the outer surface of the housing.

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

Thus, the device we offer provides high locking forces of the cable segment and high reliability, eliminating the possibility of pulling the cable segment out of the case when maliciously acting on closed devices.

Claims (6)

1. A flexible locking and sealing device containing a length of cable, one end of which is passive, and the second free end of the length of the cable, when locked, is pulled through the hollow body to form a loop and fixed in it by means of a locking mechanism consisting of two identical locking elements made in in the form of rollers mounted in a spring-loaded closure spring separator with front and rear walls and a through hole, which is placed in the cavity of the housing having a flat inclined surface and with which the locking elements interact and flat parallel surfaces, the housing has an inlet and an outlet, the latter being formed in a back cover that covers the cavity of the housing, while the longitudinal axis of the outlet and inlet and the axis of the through hole and the cavity of the housing coincide and the closure spring is worn at one end on the protrusion that is provided with the rear wall of the separator, and the other end on the spring stabilizer, and the separator is equipped with a roller separator made in the form of stops, si metrically arranged relative to the axis of the through hole, characterized in that the device is equipped with an additional fixation of the locking mechanism, which is made in the form of an L-shaped locking plate, dressed with a horizontal component on the spring stabilizer under the closure spring, and a vertical component, which is bent towards a flat inclined surface , after the formation of a loop of the minimum size and preliminary fixation of the cable segment by the fixing elements, interacts with the back wall of the separator ora when screwing a handle with a threaded section into a through threaded hole made in the housing, the latter being made at an acute angle to the longitudinal axis of the cable segment, measured in the direction opposite to the applied force to the cable segment when attempting to open the device unauthorized, the handle has a threaded section, a section with a reduced cross-section made in the form of a truncated cone, with a smaller diameter facing the threaded section and mated with a cone, is made at the rear side of the threaded section, at least the vertical component of the locking plate is made equal to the width of the inner cavity of the housing, and its length exceeds the distance between the inner surface of the back cover and the rear wall of the separator in the position of preliminary fixation of the cable segment by the fixing elements. 2. The device according to claim 1, characterized in that the parameters of the section with a reduced cross-section are selected from the conditions of breaking the handle upon reaching the necessary efforts of the end face of the threaded section through the vertical component of the retaining plate on the rear wall of the separator. 3. The device according to claim 1, characterized in that the through threaded hole is made on the side surface of the housing from the fastening side of the passive end of the cable segment. 4. The device according to claim 1, characterized in that the longitudinal axis of the through threaded hole and the said axis of the holes and the cavity of the housing lie in the same plane. 5. The device according to claim 1, characterized in that at least the threaded portion of the handle is made with increased hardness. 6. The device according to claim 1, characterized in that the spring stabilizer is made in one piece with the back cover.

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