Indicator seal for metrology equipment

The invention refers to means for sealing material values, especially of metrological devices and devices.

It is known a monobloc cable seal that confines a metallic body, in which a clogged channel is executed, in which a cable end is rigidly fixed, an axial channel pierced for the cable placement, at the same time the clogged and clogged channels are executed parallel to a face. another, so that the outlet port of the clogged channel and the inlet port of the pierced channel are located on the side face of the body, In the body, an oblique orifice is made that communicates with the pierced axial channel and is closed from the outside with о blind flange, in which the fixing element of the cable, executed in the form of an arc ball is located [1].

The monobloc seal with known cable does not possess sufficiently high reliability, because between the fixed end of the cable and its free end in closed state an eye of the cable is formed, and when the tensile stress is applied, both the sliding and twisting of the cable are possible. with arched ball and axial displacement of the rigidly fixed end. This may become the cause of unauthorized opening of the seal, after which the seal may be subjected to repeated closure without the detection of unauthorized opening.

The mentioned disadvantage prevents the use of the seal in case of sealing material objects that require high indices of mechanical strength and reliability.

Also known is a monobloc cable seal, which confines 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 and clogged grooves are executed parallel to each other so that the outlet of the clogged channel and the inlet hole of the clogged channel are located on the single side face of the body. In the body is also made an oblique orifice, which communicates with the pierced channel and in which an element of biochar with counterfeit is placed for the interaction with the cable. The body is made entirely of metal, and the end of the cable is additionally fixed by means of deformation of the body instead of the location of the channel blocked by the formation of a 180 ° loop. In the body, parallel to the oblique orifice, an auxiliary oblique orifice is executed, which communicates with the auxiliary bore channel, executed in parallel with the longitudinal bore channel for the placement of the cable, at the same time, the exit bore of the bore channel and the bore hole of the auxiliary bore channel. are located on the lateral face of the body, and between the outlet hole of the pierced channel and the inlet hole of the auxiliary pierced channel, a passage groove for the cable placement is protected, protected by lateral projections. The body is covered from the outside with a durable plastic casing, which protects from access to the elements of the seal in a locked state [2].

The disadvantages of this seal are the low reliability and the impossibility to carry out the visual control, to verify the integrity of the cable, as well as the fact that it has been damaged or sheared inside the seal.

The closest solution is a seal, which confines a transparent body with 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 ratchets that contact longitudinal ribs executed on the inner surface of the body. A detachable handle is mounted on the outer front of the core. The body also confines a hollow disk with bottom, covered with a plate for informative data. The cylindrical cavity communicates with the cavity of the disc through a perforated groove, at the same time the middle part of the core confines an annular channel formed by two circular edges. In the cavity of the disc, a bushing with projection ends with a flexible ratchet that enters the annular channel of the core through the perforated groove [3].

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

The indicator seal for metrological devices, according to the invention, removes the disadvantages mentioned above in that it confines a transparent body of high strength plastic mass with a cylindrical cavity (2) and holes, executed on its lateral surface for a flexible sealing element, and with a cavity (5), in which a safety device is located, the cavity (5) communicating with the cylindrical cavity (2) by means of a through groove. The indicator seal also confines a core with coaxial holes with those on the lateral surface of the body, the core being installed in the cylindrical cavity (2) with the possibility of rotating in one direction and equipped with ratchets with the possibility of contacting longitudinal ribs executed on the inner surface of the body. cylindrical cavities (2). The middle part of the core confines an annular channel formed by two distal circular edges, and a detachable handle is fixed on the outer front of the core. The safety device is executed with a protrusion ending with a flexible ratchet that enters the annular channel of the core through the perforated groove. The cavity (5) and the safety device are rectangular in shape. On the front parts of the safety device rigid elements are executed, which contact with ribs, executed on the inner lateral edges of the rectangular cavity, and the part of the core that is between the circular edges is executed in the form of a cross.

The safety device can be executed with the possibility of two-stage fastening, the first - for transport, and the second - for definitive fixing of the core.

MD 4034 C2 2010.04.30

The handle can be executed in the form of two separate blades with an intersection between them for placing informative data.

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

On the inside! has cavitated! be rectangular can be executed! о deep down! for placing informative data.

The result of the invention is const! in increasing the degree of protection of the indicator seal for metrological devices by executing the safety device! out of shape! rectangular! and with the possibility of fixing in two! steps, the first for transport, and the second for permanent fixing! of the core, and the part of the walnut walnut the circular edges is executed! in form! cross for rigid fixation! of the core, which increases the reliability!

The invention is explained! through the drawings in fig. 1-5, which represent !:

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

FIG. 2, section AA;

FIG. 3, section BB;

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

FIG. 5, section CC.

The indicator seal for metrological devices includes a transparent body 1 mass! plastic! of malt! rezistenf! with о cylindrical cavity! 2 and coaxial holes 3, executed on the lateral surface! for a flexible sealing element 4, and with о cavity 5, in which a safety device is located! 6, cavity 5 is communicating! with the cylindrical cavity! 2 by means of a narrow groove placed 7, a core 8 with holes 9 coaxial with those on the lateral surface! of the body, core 8 being installed m cylindrical cavity! 2 with the possibility of rotating in one direction and equipped with ratchets 10 that contact! with longitudinal ribs 11, executed on the inner surface! it has cavity! be cylindrical 2. The middle part of the core 8 confines a ring channel formed by two! circular borders 12. On the front! exterior! of the core 8 is fixed a handle 13 mounted with the possibility of detachment by a subfeed 14, the safety device! 6 is executed with о proeminenf! 15, that is over! with a flexible ratchet 16, what's in! in the ring channel of the core 8 through the grooved strut! 7. Cavity 5 and the safety device! 6 are executed form! rectangular!. On the front ends of the safety device! 6 rigid elements 17 are executed, which contact! with ribs 18, executed on the inner side rails of the cavity! be rectangular 5. The part of the core 8 between the circular edges is executed! in form! crossing 19. '

The handle 13 is executed in shape! two! separate slats, and in the intersection 20 of them are placed informative data.

The flexible sealing member 4 can be made of an offal rope, fiber optic fiber cable or twisted offal rope.

On the inside! it has cavitated! be rectangular 5 is executed! о deep down! 21 for placing informative data.

Module for assembling the indicator seal.

In the cylindrical cavity! 2 of body 1, obtained by the method of pouring of transparent plastic material, is mounted! core 8, then into the rectangular cavity! 5 are located! (first step!) the safety device! 6 so that its rigid elements 17 contact! with ribs 18, executed on the inner side panels of the cavity be rectangular 5. Previously, on the surface of the safety device! 6 the informative data can be applied. One end of the flexible member 4 is inserted into the hole 3 of the cylindrical cavity 2 and into the hole 9 of the core 8, then with the handle 13 it is made! one - two! turn after! clockwise, securing the flexible sealing member 4 to the core 8.

Thus, the indicator seal is ready for transport and use. Thanks! with the presence on the core 8 of the ratchets 10 and the longitudinal ribs 11, the handle 13 can only be rotated in one direction and, thus, the head of the flexible element 4 inserted in the body of the indicator seal cannot be pulled back headlamp! to destroy the body. In this! position the indicator seal is provided to the beneficiaries.

The indicator seal is installed! on the object in the following mode.

The beneficiary passes the free head 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 rotates the core 8 with the handle 13, winding the flexible member 4 on the core 8 until! to its full extent !. After! this the safety device! 6 is full (second step!), Which leads to the complete introduction! of it inside the cavity! be rectangular 5 so that the projection 15 s! GO! through the groove str! 7 and s! enter the ring channel of the core 8, formed by the circular edges 12, fixing the safety device! 6. Then the handle 13 in place of the subfolding 14 breaks from the front end of the core 8.

MD 4034 C2 2010.04.30

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

The integrity of the flexible element 4 can be checked! simple visual or with the help of a laser, directing the light beam! at one end of the flexible element 4 with fiber optics and getting light! to his other head, thanks! fiber optic fiber property, which transmits light from one end to the other.