RU197160U1 - Crimp adapter shielded contact for splicing electrical circuits - Google Patents

Abstract

The utility model relates to electrical engineering, in particular to cable technology, and in particular to devices that are transitional contacts, which provide splicing of electrical, shielded and unshielded circuits, including directly on explosive products used, for example, in rocket science and aircraft construction. represents a transitional crimped shielded hollow contact of a cylindrical shape made of metal with high conductive characteristics. The contact contains grooves and a protrusion for assembly and is divided by a partition into two connecting sections containing through drainage holes. The contact has an insulating body made of dielectric with bosses for assembly, while the body contains a shielding layer located in the cross section of the wall of the body and not in contact with the transition contact and the wire. The shielding layer has a longer length than the contact and the housing to allow the shielding layer of the housing to be bonded to the wire shields. The technical result is a reliable splicing by crimping shielded, unshielded electrical wires, since the housing can act as an insulation of the spliced wires, and also allows you to work on explosive products.

Description

The utility model relates to electrical engineering, in particular to cable technology, and in particular to devices that are transitional contacts, which provide splicing of electrical, shielded and unshielded circuits, including directly on explosive products used, for example, in rocket science and aircraft construction.

There are frequent cases when, at the last stages of product assembly, damage to the on-board cable network (BCS) circuits occurs or there is an urgent need to extend them. The task may be complicated by the fact that the product can be equipped with explosive components, which eliminates the possibility of using thermal work during repairs. In most such cases, disassembly of components and assemblies, replacement of the damaged section of the BCS with the ensuing negative economic and temporary consequences is required.

BCS and electronic equipment of modern special-purpose equipment operates under the influence of electromagnetic effects from external factors and from the structural components of the product’s equipment itself. To ensure electromagnetic compatibility and interference filtering, shielded wires are used in this technique.

Various wire connections are known.

The connection of a multicore current lead of power circuits and power lines with a shank of electrical contact, a tip or a coupling [1. Pat. 2211512 RU, IPC (2000.01) H01R 4/18. Contact compound / Potapov V.T., Khlebnikova I.A. - Declared. 04/19/2001; publ. 04/20/2003, Bull. No. 11.]] is made in such a way that the connection elements on the pressed section are uniformly deformed along the entire cross section to the exclusion of gaps.

The disadvantages of this invention:

the compression of low-voltage wires of small cross-section by uniform crimping over the entire cross-section is unreliable: there is a high probability of slipping of the wire due to the uniform cross-section in the crimping section when applying the necessary pull-out force;

in some cases, for uniform deformation of the metal sleeve during pressure testing, heating will be necessary, which can lead to damage to the wires, including the coating of the wire strands, and also exclude the possibility of installing or repairing electrical circuits on an explosive product;

when connecting two wires, the depth of entry of electrical conductors into the connection before crimping is excluded;

- The connection is only for unshielded wires.

Known electrical cable connector using a conductive element [2. Pat. 2018001891 WO, IPC ⁶ H01R 4/36, H01R 31/06, H01R 43/04. Connector / Delescluse L. (FR), Savina R. (FR), Fastrez S. (FR). - Declared. 06/23/2017; publ. 01/04/2018.].

The disadvantages of the invention:

deformation is carried out only on two planes, which reduces the degree of reliability of the connection;

in the process of applying force to the screws, constant deformation control is required to exclude clamping or insufficient deformation of the wires when selecting wires of different cross-sections of the wires, as well as locking screws to prevent self-loosening and disconnecting the wires during vibration;

when connecting wires, control of the depth of entry of electrical conductors before crimping is excluded;

The connection is for unshielded wires only.

Known butt clamp of a special form for wires

[3. Pat. 204130723 CN, IPC ⁶ H01R 11/01, H01R 11/07, H01R 4/20. U-shaped wire clip / Su Chandbao. - Declared. 08/19/2014; publ. 01/28/2015], the disadvantages of which are:

lack of openings for controlling the entry of wire strands into a hard-fitting connector and for simultaneous air drainage;

when implementing a utility model, heating is used, which is unacceptable on products equipped with explosive elements;

The connection is for unshielded wires only.

The objective of this utility model is to create a reliable crimped transition shielded contact for splicing shielded and unshielded electrical wires.

The inventive device is a transitional crimped shielded hollow contact of a cylindrical shape made of metal with high conductive characteristics. The contact contains grooves and a protrusion for assembly and is divided by a partition into two connecting sections containing through drainage holes. The contact has an insulating body made of dielectric with bosses for assembly, while the body contains a shielding layer located in the cross section of the wall of the body and not in contact with the transition contact and the wire. The shielding layer has a greater length than the contact and the housing for the possibility of bonding the shielding layer of the housing with the shields of wires.

The utility model is illustrated by drawings. In FIG. 1 shows a transitional crimp hollow contact 1 of a cylindrical shape without a housing. In FIG. 2 shows a shielded insulating housing 2. In FIG. 3 shows a transitional crimp hollow contact 1 with a shielded insulating casing 2 mounted on it. FIG. 4 shows an example of connecting stranded shielded wires using a transition crimp shielded contact.

длину, чем контакт 1 и корпус 6 для возможности скрепления экранирующего слоя 8 корпуса 6 с экранами проводов 10. Диаметры отверстий d1, d2 на фиг. 1 для обжимки выбирают в зависимости от диаметра сечения жил 9 сращиваемых проводов.The transition crimp shielded hollow contact 1 in FIG. 1 of a cylindrical shape made of metal with the necessary conductive indicators, divided into two connecting sections by a partition 2 with grooves 3 and a protrusion 4 for assembly. The connecting portions comprise through drainage holes 5. The transition crimp contact 1 comprises the one shown in FIG. 2 insulating body 6 made of dielectric with bosses 7 for assembly. The housing 6 has a shielding layer 8 of metal braid, located in the cross section of its wall and not in contact with the transition contact 1 and the cores 9 of the shielded wires (Fig. 4). The shielding layer 8 has

the length than the contact 1 and the housing 6 for the possibility of fastening the shielding layer 8 of the housing 6 with the shields of the wires 10. The diameters of the holes d1, d2 in FIG. 1 for crimping, depending on the diameter of the cross-section of the cores, 9 spliced wires are selected.

In the sections for crimping, it is made through hole 4 for venting air from the dead area and additional control of the wire entry. To connect the shielded wires 10, in addition to connecting the cores of 9 wires, it is also necessary to connect their screens to prevent tearing of the screen in the splicing area. Therefore, the design of the device provides an insulating body 6 made of a dielectric, for example, such as polyethylene or fluoroplastic. When connecting the breakage point in a closed circuit, it is necessary to temporarily install the housing 6 on the trunk of one of the wires before crimping the wires of 9 wires, then compress the wires of 9 wires in the transition contact 1, and then install the shielding case 6 on the transition contact 1. After that, the cold connection is made shielding layer 8, pressed into the housing 6 with a shielding sheath of wires 10. The connection of the screens is made according to the technology of the enterprise without the use of heat, for example, such as the installation of filament bandages with osleduyuschey impregnated adhesives, stitching conductive thread, etc. This application is not considered.

This transient shielded contact provides a reliable connection to both shielded wires and unshielded wires. Moreover, when connecting shielded wires, the case serves as an insulator, and shields the connection area, and when connecting unshielded wires it simply serves as an insulator, the shielding layer does not create any negative effects.

The technical result is a reliable splicing by crimping shielded, unshielded electrical wires, since the body acts as an insulator and a screen in the area of splicing wires, and also allows you to work on explosive products.

Crimp connectors are widely used in aircraft and rocket science. The proposed contact is crimped and has two sections for crimping, allowing you to connect two wires or a section subjected to mechanical rupture. For connection, it is possible to use the same tool that is used to crimp the electrical contacts of sockets and plugs of the SNTs23 type, etc. This tool allows you to compress the wires in the inventive transitional contact in both areas along the four contact planes. This compression principle has already proven its reliability. The device can be made using standard equipment and materials of domestic production. Thus, the claimed device meets the criterion of "industrial applicability".

Sources taken into account.

1. Pat. 2211512 RU, IPC (2000.01) H01R 4/18. Contact compound / Potapov V.T., Khlebnikova I.A. - Declared. 04/19/2001; publ. 04/20/2003, Bull. No. 11.

2. Pat. 2018001891 WO, IPC ⁶ H01R 4/36, H01R 31/06, H01R 43/04. Connecting connector / Delescluse L. (FR), Savina R. (FR), Fastrez S. (FR). - Declared. 06/23/2017; publ. 01/04/2018.

3. Pat. 204130723 CN, IPC ⁶ H01R 11/01, H01R 11/07, H01R 4/20. U-shaped wire clip / Su Chandbao. - Declared. 08/19/2014; publ. 01/28/2015.

4. Pat. 2533165 RU, IPC ⁶ H01R 4/18. Electrical contact element / Volting Thomas (DE), Schmidt Martin (DE). - Declared. 01/12/2011; publ. 11/20/2014; Bull. Number 32.

5. Pat. 2572592 RU, IPC ⁶ H01R 4/02, H01R4 / 18, H01R 13/405. Electrical connection / Jacobi Rainer (DE), Liegl Erwin (DE), Gademann Anselm (DE), Möller Birgit (DE). - Declared. 07/01/2011, publ. 09/10/2014; Bull. Number 25.

Claims (1)

Transitional crimped shielded hollow contact of a cylindrical shape made of metal with high conductive characteristics, containing grooves and a protrusion for assembly and divided by a partition into two connecting sections containing through drainage holes, characterized in that it contains an insulating body made of dielectric with bosses for assembly, while the body contains a shielding layer located in the cross section of the wall of the housing and not in contact with the transition contact and the wire, and the shielding layer has a large length, contact and housing to allow the bonding layer to the shield frame screen wires.

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