Indicator seal for metrology devices

The invention relates to means for removing by sealing objects, in particular metrological devices and devices.

It is known a monobloc seal with cable, which contains a metallic body, in which there is a clogged channel, in which is rigidly fixed one end of the cable, an axial channel, pierced for the location of the cable, at the same time the pierced and clogged channels are parallel one relative to another, so that the outlet port of the clogged channel and the inlet port of the pierced channel are located on a side face of the body, in the body an oblique hole is executed, which thus communicates with the axial channel pierced and closed from the outside with a blind flange, in which the cable fastener, executed in the form of an arc ball, is located.

The monobloc cable seal from the prior art does not possess sufficiently high reliability. This is conditioned by the fact that between the fixed end of the cable and its free end in the closed state an eye of the cable is formed, and when applying the stretching effort it is possible both the sliding and twisting of the cable in relation to the arched ball and the axial displacement. of the rigidly fixed end. This may be the cause of the unauthorized opening of the seal, after which it may be subjected to repeated closure, without the detection of unauthorized opening,

The disadvantages of the aforementioned seal prevent it from being used in the case of sealing objects that require high mechanical strength and reliability indices.

Also known is the monobloc cable seal, which contains a body in which a clogged longitudinal channel is executed, in which the end of the cable is fastened, and a longitudinal channel pierced, for placing the cable therein. The pierced channel and the blocked channel are executed parallel to each other, so that the outlet of the blocked channel and the entrance hole of the pierced channel are located on a single side face of the body, in the body is also executed an oblique orifice, which then communicates with the pierced channel, and in which a locking element is placed with the counter, for the interaction with the cable. The body is made entirely of metal, and the end of the cable is further fixed by means of deformation of the body instead of the location of the clogged channel, with the formation of a 180 ° loop. In the body, parallel to the oblique orifice, an auxiliary oblique orifice is executed, which thus communicates with the auxiliary pierced channel, executed in parallel with the longitudinal pierced channel for the placement of the cable, at the same time, the exit orifice of the pierced channel and the entrance orifice of the auxiliary pierced channel. are located on a side face of the body, and between the outlet hole of the pierced channel and the entrance hole of the auxiliary pierced channel, a passage recess is executed, for the cable placement, protected by lateral projections. The body is covered from the outside with a durable, plastic casing that protects from access to the sealed elements in a locked state.

The disadvantages of this seal are the low reliability and the impossibility of carrying out the visual control, checking the entire cable, if it has been damaged or forced, inside the seal.

The solution is a seal that contains a transparent body, with a cylindrical cavity, with bottom and holes on the side surface, for the flexible sealing element, and a core with holes coaxial with the holes on the side surface of the body. The core is installed in the body with the possibility of rotation, and is equipped with labels that are in contact with long-line ribs, executed on the inner surface of the body. A detachable handle is mounted on the outer front of the core. The body also contains a concave disk with bottom, covered with a plate for informative data. The cylindrical cavity will thus communicate with the disc cavity through a perforated groove; at the same time the middle part of the core contains an annular channel, formed by two circular edges. In the disc cavity, a protruding bush is placed which ends with a flexible ratchet, which enters the annular groove of the core through the perforated groove.

RO 128073 Β1

The disadvantages of this seal are the low reliability and complicated construction. 1

It is known the document RO 119490 B1, which reveals a seal to ensure full integrity of the different protected objects, made up of a body having a first 3 cylindrical semi-carcases made of plastic material and provided with coaxial holes with the holes made in the interior mounted with the possibility of rotation inside. the cylindrical semi-casing, by means of a handle 5, the coaxial holes being intended for inserting the ends of the sealing wire, the core being provided on the outer face with teeth that cooperate with the longitudinal ribs 7, made on the inner surface of the cylindrical half-casing, and with circular projections, which delimit a circular cavity, the cylindrical half-casing being provided 9 with a groove in which a projection is introduced on a bush mounted inside the second cylindrical semi-carcass. 11

Also, US 5402958 A describes a seal for assembled components, consisting of a tubular housing, a rod, a flexible elongate member, a means for rotating the rod in one direction, and a means for opposing the rod rotation in the report. with housing. The housing has a circular side wall, which surrounds a central shaft, and the side wall has a first opening in the wall. The rod has an opening aligned with the first opening in the wall, and the flexible elongated element exits the housing. The free end of the flexible member is passed 17 through the aligned openings of the assembled components, and then through the circular side wall and rod. The rod is then rotated in a direction relative to the housing, to encircle a segment of the member 19 with respect to the rod.

Document RO119258 Bl refers to a seal designed to ensure the security of unauthorized access, such as to measuring devices used by suppliers, for consumption control, such as, for example, electricity, heat, natural gas, water or in any other 23 place where it is necessary to ensure the security of the unauthorized access, being provided with a spherical cap, closing, which has an orifice through which a locking rod passes, provided with a 25 channel for actuating the locking pivot with the aid of a screwdriver.

The objective technical problem solved by the invention consists in increasing the degree of protection of the seal, by means of the possibility of fixing in two stages the safety element, the first for transport, and the second for definitive locking by rigidly fastening the core 29 with the help the ratchet that comes into contact with the cross-shaped core part.

Indicator seal for metrological devices according to the invention removes the aforementioned disadvantage by including a transparent body, of resistant plastic mass, executed from a cylindrical cavity, with bottom and coaxial holes executed on the lateral surface 33, for a a flexible sealing member, and a bottom cavity in which a safety device is placed; the bottom cavity then communicates with the cylindrical cavity via a through groove 35, a core with holes coaxial with those on the lateral surface of the cylindrical cavity, the core being installed in the cylindrical cavity, with the possibility of rotating in one direction, and 37 equipped with ratchets which are in contact with longitudinal ribs, executed on the inner surface of the cylindrical cavity; at the same time, the middle part of the core contains an annular channel, 39 formed by two circular edges, and on the outer front of the core there is a handle mounted with the possibility of detachment; the safety device is executed with a projection which ends with a flexible ratchet, which enters the annular channel of the core through the through groove; the bottom cavity and the safety device are executed in rectangular form - 43 Iaara; at the same time, on the lateral parts of the safety device, rigid elements are executed, which are in contact with projections executed on the inner lateral parts of the rectangular cavity with bottom, and the core part between the circular edges is executed in the form of a cross. 47

The safety device is executed with the possibility of fixing in two stages, the first for transport, and the second - for definitive fixing of the core. 49

RO 128073 Β1

The handle is executed in the form of two separate blades, and in the intersection between them are placed informative data.

The sealing element can be made of steel rope, fiber optic fiber cable, or twisted steel rope, fiber optic fiber cable.

On the inside of the rectangular cavity is mounted a cavity for placing informative data.

The result of the invention consists in increasing the degree of protection of the indicator seal for metrological devices, by executing the safety device in rectangular form, and realizing it with the possibility of being fixed in two stages, the first - for transport, and the second - for definitive fixing of the the core, and the core part between the circular edges is executed in the form of a cross, for rigid fixation of the core, which leads to increased reliability.

The invention is explained by the drawings in FIG. 1 ... 5, which presents;

FIG. 1, the sectional view of the indicator seal for metrological devices, assembled;

FIG. 2, section AA;

FIG. 3, section BB;

FIG. 4, the sectional view of the indicator seal for metrological devices, disassembled;

FIG. 5, section CC.

The indicator seal for metrological devices includes a transparent body 1, of resistant plastic mass, made of a cylindrical cavity, with bottom 2 and coaxial holes 3, executed on the lateral surface, for a flexible sealing element 4, and a cavity with bottom 5 , in which a safety device 6 is placed, the bottom cavity 5 then communicates with the cylindrical cavity 2 by means of a through groove 7, a core 8 with holes 9 coaxial with those on the lateral surface of the cylindrical cavity 2, the core 8 being installed in the cylindrical cavity 2 with the possibility of rotating in one direction, and equipped with ratchets 10 which contact with longitudinal ribs 11, executed on the surface inner of the cylindrical cavity 2. The middle part of the core 8 contains an annular channel, formed by two circular edges 12. On the outer front of the core 8 is a handle 13 mounted, with the possibility of detachment, through a slim surface 14; the safety device 6 is made with a projection 15, which ends with a flexible ratchet 16, which enters the annular channel of the core 8 through the grooved groove 7. The bottom cavity 5 and the safety device 6 are made in a rectangular shape. On the sides of the safety device 6 are rigid elements 17, which are in contact with projections 18 made on the inner sides of the rectangular cavity with bottom 5. The part of the core 8 between the circular edges is in the form of a cross 19.

The handle 13 is made in the form of two separate blades, and in the intersection 20 of them are placed informative data.

The flexible sealing member 4 can be made of steel rope, fiber optic fiber cable, or twisted steel cable with fiber optic polymer cable.

A cavity 21 is mounted on the inside of the rectangular cavity 5, for placing informative data.

The assembly of the indicator seal in the cylindrical cavity 2 of the body 1, obtained by the method of casting of transparent plastic material, is mounted the core 8, then in the rectangular cavity 5 the safety device 6 is placed (first step) so that its rigid elements 17 thereof are in contact with the projections 18 executed on the inner parts of the rectangular cavity 5, in

EN 128073 Β1, the surface of the fuse device 6 may be applied informative data. One end 1 of the flexible member 4 is inserted into the hole 3 of the cylindrical cavity 2, previously connecting it with the hole 9 of the core 8; then with the handle 13, one-two rotations are performed after the 3 clockwise, fixing the flexible sealing element 4 on the core 8. Thus, the indicator seal is ready for transport and use. Due to the presence on the core 8 of the ratchets 10 and 5 the longitudinal ribs 11, the handle 13 can only be rotated in one direction and thus the end of the flexible element 4 inserted in the body of the indicator seal may not be possible to be pulled back 7 without destroying the body. In this position, the indicator seal is provided to the beneficiaries.

The indicator seal is installed on the object in the following way. 9

The beneficiary passes the free end of the flexible member 4 through the holes or ears of the sealed object, and then through the hole 3 of the cylindrical cavity 2 and the hole 9 of the core 8, after which 11 rotates the core 8 with the handle 13, winding the flexible element 4 on the core 8 until at its full extent. After the safety device 6 is pressed (the second step 13), it will lead to its complete insertion inside the rectangular cavity 5 so that the projection 15 passes through the grooved groove 7 and enters the ring channel 15 of the core 8, formed by the circular edges 12, executed in the form of a cross 19, fastening the safety device 6. Then the handle 13, instead of the thin surface 14, breaks from the front end 17 of the core 8.

The indicator seal installed in this way certainly protects the sealed object from unauthorized sales.

Verification of the entire flexible element 4 can be performed simply, visually, or with the aid of a laser, by directing the light beam to one end of the flexible element 4 with optical fibers, obtaining light at the other end thereof, due to the properties of the optical fibers that 23 transmit light from one end to the other.