RU2367755C2 - Locking device - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention concerns fixture and locking device. Device includes case with through hole, exit channel crossed by reference hole for passive and loose ends of cable section respectively, and stopping element with base and conical parts, mounted so as to be shifted by compelling force impact, for interaction with cable section. Stopping element in reference hole can perform straight line movement, and force impact is applied by external load. Reference hole is dead-end and stepped, with smaller step overrunning exit channel. Stopping element with collar is sprung and mounted in reference hole by bearing sleeve. In position prepared for locking, base part is partially protruding out of case. To lock the device, an external load should be applied at the end of stopping element, which shifts inside the case, its sharp end going through cable section in stopping zone.

EFFECT: enhanced reliability of locking (stopping), prevented unauthorised opening without visible destruction traces.

2 cl, 3 dwg

Description

FIELD OF THE INVENTION

The invention relates generally to the field of mechanical engineering, in particular to locking devices that are used in railway, automobile and other types of transport to protect the doors of cars, containers, tank hatches, helms of hopper cars, as well as various rooms, including warehouses, shops, etc. from unauthorized entry.

More specifically, the invention relates mainly to shut-off devices of the “twist” type.

State of the art

A spin device is known in which a flexible element is used as a locking means, for example, a piece of cable (cable) with a passive end fixed in the housing and with a free end passed through the through hole in the housing when locking, and a latch is used as a fixing means made in the form of a curved element "G" -shaped or a screw with a pointed end having a section with a reduced cross-section made in the form of an annular groove or groove, and followed by a threaded section ohm located in the threaded hole of the housing.

When locking, the pointed end of the latch interacts with the cable, and when the specified fixing force is reached, the latch breaks off in the groove zone (US patent No. 4312512, NKi 292-315).

The disadvantages of the known devices include insufficiently reliable fastening of the cable segment with the end of the screw, because with a slight weakening, the length of the cable can be extended from the through hole. The fastening of the passive end of a piece of cable (rope) in a relatively long sleeve does not allow for the locking of the object of protection to ensure a minimum loop. In addition, the known device does not have high resistance to force.

These disadvantages are overcome in the device described in patent Ru 2278421, cl. G09F 3/03.

The device comprises a housing with a blind hole, in which the passive end of the segment of the rope (cable) is fixed, and through the through hole when locking, the free end of the segment of the rope (cable) is passed and fixed by a screw or a rotary handle with a threaded part screwed into the threaded hole of the housing. The latter crosses the through hole. In the zone of jamming of the rope, the body is equipped with a sample, which is closed by a plug. The axis of the holes is located in the same plane, while the axis of the through hole is at an angle to the smooth, and the axis of the threaded hole is at an angle to the through. When locking by rotating the handle, the pointed end of the screw interacts with the rope, and when the specified fixing force is reached, the handle breaks off in the groove zone (reduced cross section).

The specified device is not technologically advanced (the presence of a sample, a threaded hole in the housing, a pressed plug), and also uneconomical, since the broken handle is thrown away. In addition, when the handle is rotated, the possibility of its premature breaking off in the groove zone is not ruled out, as a result of which the possibility of unauthorized opening of the device increases. The known device also imposes operational inconveniences associated with the need to rotate the handle.

The technical result of the invention is to remedy these disadvantages.

SUMMARY OF THE INVENTION

This is achieved by the fact that in a locking device comprising a housing with a through hole, a passage channel and a support hole crossing the latter, respectively, under the passive and free ends of the rope segment and a stop element having a support and pointed part, mounted for movement under forced force for interacting with a piece of rope after pulling the free end through the passage channel with the formation of a loop of minimum size, according to the invention, the locking element mounted in the support hole with the possibility of rectilinear movement, and the force impact on it is carried out by applying an external load.

And also the fact that the support hole is made cylindrical smooth.

And also the fact that the reference hole is made deaf and stepped with overrun of the passage channel at a lower stage.

As well as the fact that the locking element is provided with a shoulder and is spring-loaded, while the support part is cylindrical, and the pointed part mating with the shoulder is conical and mounted in the support hole by means of a support sleeve fixed in a larger step of the support hole, the spring being put on on its conical part, and in the position of the device, prepared for locking, the supporting part partially extends outside the housing, and the conical part partially extends to a lower level of the supporting hole, while Its height is located outside the generatrix of the throughput channel.

And also by the fact that the supporting sleeve is made with a shoulder and fixed in the supporting hole of the housing mainly by rolling.

And also the fact that the spring in the support hole is installed with a guaranteed clearance, the value of which, when the locking element is moved, ensures its free passage, while its inner diameter is smaller than the diameter of the shoulder of the locking element.

And also the fact that the angle of the pointed part of the locking element is made within 17-27 °.

Below the invention is illustrated by way of example with the accompanying drawings.

Brief List of Drawings

Figure 1 shows a General view of the proposed locking device in a position prepared for locking, in section (thin lines show the position of the pointed part of the locking element in the closed position of the device);

Figure 2 is a sectional view of the device body;

Figure 3 - locking element;

Preferred Embodiment

The locking device includes a housing 1 with a through hole 2, a passage channel 3 and, crossing the last, support hole 4, respectively, under the passive 5 and free 6 ends of the rope segment 7 and the locking element 8, having a supporting 9 and a pointed 10 parts mounted for movement forced force exposure to interact with a piece of rope 7 after pulling the free end 6 through the passage channel 3 with the formation of a loop of minimum size. According to the invention, the locking element 8 in the support hole 4 is mounted with the possibility of rectilinear movement, and the force is applied to it by applying an external load, a detailed description of which will be given in the section on the use of the invention. The support hole is made cylindrical smooth, and deaf and stepped with an overrun 11 of the passage channel 3 with a smaller step 12. Their axes are mutually perpendicular and lie in the same plane. The locking element 8 is provided with a shoulder 13 and spring-loaded, while the supporting part 9 is made cylindrical, and the pointed part 10, conjugated with the shoulder 13, is made conical. The locking element in the support hole 4 is mounted by means of a support sleeve 14 fixed in a larger step 15 of the support hole, the spring 16 being worn on its pointed (conical) part 10, and in the position of the device prepared for locking, the supporting part 9 partially extends outside the housing 1, and the pointed (conical) part 10 partially extends into the lower step 12 of the support hole, while its apex 17 is located outside the generatrix of the passage channel 3.

The support sleeve can be made with a shoulder 18 resting on the shoulder in the support hole 4, and fixed in the housing mainly by rolling, and the spring 16 in the support hole 4 is installed with a guaranteed clearance, the size of which when moving the locking element 8 ensures its free passage, when this, its inner diameter is made smaller than the diameter of the shoulder 13 of the locking element, and the angle of the pointed (conical) part 10 of the locking element 8 is made in the range of 17-27 °.

The locking device may be provided with a place for applying the necessary sealing information provided on the housing; the latter can be made multifaceted, cylindrical, etc.

The passive end 5 of the rope segment, which is used as a cable segment, can be fixed in hole 2 by local crimping or provided with a shank and freely passed through it. The hole 2 is parallel to the through channel 3.

The proposed locking device is used as follows.

The free end 6 of the rope segment 7 is passed through the locking unit (eyes) of the doors of the car, container, etc., and then pulled through the passage channel 3.

After the formation of the loop of the minimum size, an external load is applied to the locking element 8. It can be dynamic (shock) provided by hand-held portable tools with a power drive, for example, with an electric or electromagnetic drive, an integrated hydraulic drive, or with a drive driven by compressed gases, etc.

It is preferable to use a static load, which can be provided with clamping tools, including pincers with a linkage, pliers with parallel movement of the jaws, tongs for seals with an eccentric lever.

In this case, the locking element 8, moving rectilinearly (without rotation) into the body (locking zone), the pointed part 10 (conical end) with the apex 17, interacts with a segment of the rope 7, moves apart and moves its locks in the zone of locking (jamming), respectively, radially and along the axis of the support hole 4 in the direction of overtraying 11. After the passage ("flashing") of the segment of the rope 7, the pointed part 10 of the locking element 8 with the apex 17 interacts with the end face 19 of the support hole 4. In this case, partial breaking into rshiny 17 or its deformation. As a result, the entire pointed (conical) part 10 will be in the zone of locking (jamming), reliably holding a segment of the rope 7. Its unauthorized pulling out without visible signs of destruction of the housing 1, the very segment of the rope and the locking element 8 is impossible. It will also be impossible to pull out the locking element, since it is flush with the end of the housing (sleeve) in the closed position of the device (and if there is a protrusion on the power tool from the side of the locking element, it will be recessed inside the housing) and held by the wedging action of the pointed (conical) part 10 in the locking zone of a piece of rope.

An additional obstacle to pulling out the locking element 8 in the embodiment is a spring 16, which, when passing through the pointed (conical) part 10, will interact with the shoulder 20 of the shoulder 13. To prevent the drilling of the locking element 8, the whole or its end face is made with increased hardness. The design of the proposed device increases the reliability of locking the length of the rope, because the pointed (conical) section rests on two supports formed in the locking (jamming) zone, the expansion section has the additional effect of fixing the rope segment and additionally prevents the stretching of the rope segment when maliciously acting on the locking device.

The proposed device can also be used as an additional fixing device, in locking and sealing devices, in which balls, or rollers, or other elements serve as the main fixing element.

Claims (2)

1. A locking device comprising a housing with a through hole, a passage channel and a supporting hole crossing the last, respectively, under the passive and free ends of the rope segment and a locking element having a supporting and conical parts mounted for movement under forced force for interaction with a piece of rope after pulling the free end through the passage channel with the formation of a loop of minimum size, and the locking element in the support hole is mounted with the rectilinear movement, and the force is exerted on it by applying an external load, while the support hole is made blind with overrun of the passage channel with a lower step, characterized in that the locking element is provided with a shoulder, is spring-loaded and mounted in the support hole by means of a support sleeve, while the spring put on its conical part, and the support sleeve is made with a shoulder and fixed in the support hole of the housing mainly by rolling, with the spring in the support hole and installed with a guaranteed gap, the value of which, when moving the locking element ensures its free passage, and its inner diameter is made smaller than the diameter of the shoulder of the locking element. 2. The device according to claim 1, characterized in that the angle of the pointed part of the locking element is made in the range of 17-27 °.

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