Method for fastening cables, in particular electrical cables, and a tight connector

Abstract

The subject of the invention is a method and a connector for fastening a cable, in particular an electric cable, in the wall of an electronic, electrical, pneumatic, hydraulic and mechanical device. A method for fastening a cable, in particular an electric cable, in a wall, characterized in that an outer sleeve constituting the body 1 of the connector is placed in an opening in the wall 4 so that the abutment surface 2 of the body 1 abuts against the wall 4, and then a certain axial force F1 is applied, which causes a part of the body 1 to deform and forms an outer ring 7 on the body 1 of the connector near the wall 4 of the housing, and a cable 6, in particular an electric cable, is inserted into the through opening 3 of the body 1 of the connector, which part is then radially crimped by a force F2. The method according to claim 1, characterized in that before the radial crimping or fastening, a flexible seal 8, in which the cable 6, in particular an electric cable, is arranged, is inserted into the through opening 3 of the body 1 of the connector. A connector for fastening or attaching a cable, in particular an electric cable, forming a passage in a wall, characterized in that an outer sleeve constituting the body 1 of the connector is placed in an opening in the wall 4 via a formed outer ring 7 and an abutment surface 2, and in addition the body 1 of the connector has a through opening 3 in which a cable 6, in particular an electric cable, is arranged, which is radially fastened in a part of the body 1 of the connector. The body 1 of the connector forming the outer shell has a thicker wall thickness in the radially fastened part than in the part deformed by an axial force.

Description

[Technical field]

[0001] The subject of the invention is a method and a connector for fixing cables, in particular electrical cables, in passages in the walls of electronic, electrical, pneumatic, hydraulic and mechanical devices. [Background technology]

[0002] Current cable connectors, such as cable feed-throughs, are made up of several parts and require precise and expensive machining during manufacture and sometimes assembly. In addition, to ensure a good level of sealing, a gasket is required between the surface through which the cable is passed and the connector, if the sealed connector is assembled by means of screws. This gasket is often exposed to high temperatures, increasing the risk of leakage or rendering the connector completely unusable. A problem that arises with the above connectors is that the fastening of the gasket of the connector is achieved by screwing into a threaded cup, which can cause a displacement (rotation) of the gasket and the cable placed in the connector, which can cause damage to the cable or leakage.

[0003] From WO 2015 / 023814 a solution is known in which the watertight aperture has an additional element that spaces the gasket away from the nut. The disadvantages of this solution are its low resistance to temperature and its high production costs.

[0004] From DE 102 31 309 A1 a solution is known in which a fire-resistant housing has a through opening for the cable and the remaining space is filled with a sealant forming a small hole, which at the same time protects the cable against tearing.

[0005] DE 1 061 861 A1 presents a connector with an insert made of a flexible rubber material.

[0006] Known fasteners or connectors for attaching cables usually consist of two parts, a clamp which, together with the cable to be attached, is usually screwed to the wall of the housing of the device by means of a screw which is screwed into either a threaded opening or an opening adapted for a self-tapping screw.

[0007] Current connectors are made of multiple parts and require precise and expensive machining during manufacture and sometimes assembly. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] International Publication No. 2015 / 023814 [Patent Document 2] German Patent No. 10231309 [Patent Document 3] German Patent Publication No. 1061861 Summary of the Invention [Problem to be solved by the invention]

[0009] The object of the present invention is to develop a simple technical solution relating to sealed apertures / connectors installed in walls, in which cables, in particular electrical cables, are placed. [Means for solving the problem]

[0010] According to the invention there is provided a method for mounting a cable, in particular an electric cable, in a wall, characterized in that a profiled sleeve constituting the body of the connector is placed in an opening in the wall so that the abutment surface of the body abuts against the wall, then a given axial force F1 is applied, which causes a deformation of part of the body and forms an outer ring on the body of the connector near the wall of the housing, and the cable, in particular an electric cable, is inserted into the through opening of the body of the connector and then a part of the body is radially crimped by a force F2.

[0011] Prior to radial crimping or fastening, a flexible seal, inside which a cable, in particular an electrical cable, is placed, is inserted into the through opening of the body of the connector.

[0012] Prior to installation of the body of the connector within the wall opening, a gasket is placed against the abutment surface and the wall surface.

[0013] After the body of the connector is placed into the opening in the wall and before the ring is formed, a gasket is placed against the surface of the wall.

[0014] According to the invention there is provided a connector for fixing or attaching a cable, in particular an electrical cable, which defines a passage in a wall, characterized in that an outer shell sleeve, which defines the body of the connector, is placed in an opening in the wall via a formed outer ring and abutment surface, and in addition the body of the connector has a through opening in which the cable, in particular an electrical cable, is arranged, which is radially fastened in a portion of the body of the connector.

[0015] The body that forms the outer shell of the connector has a wall thickness that is thicker in the radially fastened portion than in the portion that is deformed by a force applied in the axial direction.

[0016] Inside the through opening there is an inner flange.

[0017] The abutment surface of the connector body is the result of a varying or multiplying wall thickness of the body.

[0018] The body of the connector has an outer flange with an abutment surface.

[0019] Inside the through opening a flexible seal is provided, inside which a cable, in particular an electrical cable, is arranged.

[0020] A wall-bearing gasket is located between the body and the wall of the connector.

[0021] The abutment surface of the connector body is perpendicular to the surface of the body.

[0022] The abutment surface of the body of the connector is a conical surface.

[0023] The outer part of the body of the connector has the shape of two sleeves with different outer diameters connected to each other by a conical element constituting an abutment surface. Effect of the Invention

[0024] Mounting the cable in accordance with the present invention ensures a tight seal without the presence of a gasket between the wall surface and the body of the connector, and also ensures operation at high temperatures.

[0025] The mounting of the body of the connector in the opening of the wall is performed by fastening with a predetermined force F1 acting parallel to the axis of symmetry of the body. On the other hand, the cable, in particular an electric cable, placed in the through opening of the body is attached and sealed by fastening the end of the body with a predetermined force F2 acting radially. The body of the connector is made of a material that is prone to plastic deformation, for example aluminum or brass. The connector is resistant to loosening and ensures sealing of the passage. The seal, inside which the cable is placed, must fit tightly with the through opening of the body and the outside diameter of the seal should be 0.5-3% larger than the diameter of the through opening. It is also possible to use a seal with a flange, the diameter of which may be 5% smaller than the diameter of the through opening of the body. The connector is characterized by a simple structure and low manufacturing and assembly costs.

[0026] The connector according to the invention performs several functions: besides being tight against liquids, dust and gases, it also protects the cable against tearing and is resistant to high temperatures.

[0027] The subject matter of the invention is presented in the following drawings. [Brief description of the drawings]

[0028] [Figure 1] FIG. 2 is a longitudinal cross-sectional view of a connector body having a conical flange. [Diagram 2] FIG. 1 shows a connector installed in an opening in a wall, the body being provided with a conical flange after being fastened along an axis of symmetry and having a recess formed as a result of radially fastening one end of the body. [Diagram 3] FIG. 2 is a view of a connector body having a step on its outer surface. [Figure 4] FIG. 2 is a diagram of a body having a flange at a distance from the end of the body. [Diagram 5] FIG. 2 is a view of a body having a conical flange on its outer surface and a flange inside the through opening. [Figure 6]FIG. 1 shows a body with flanges and gaskets on the ends. [Figure 7] FIG. 13 is a view of a body having flanges at the ends after forming an outer ring on the body. [Figure 8] FIG. 13 is a diagram of a connector in which an outer ring is formed on the body and, after fastening, the remainder of the body has a rectangular prism shape with a hexagonal base. [Figure 9] FIG. 13 is an exploded view of the elements of a connector having a rectangular prism shape with a hexagonal base after the body is fastened along the axis of symmetry and after one end of the body is fastened radially. [Figure 10] (a) is a diagram of a connector having a flange at a certain distance from the end of the body, a seal on the cable, and a gasket between the plane of the wall and the outer ring after the body is fastened longitudinally and radially; (b) is a cross-sectional view of the body, where the radially fastened portion has a square shape. [Figure 11] This is an exploded view of the elements of a connector having a rectangular prism shape with a square base after the body and sealing part are fastened along the axis of symmetry and after one end of the body is fastened radially. [Figure 12] A diagram of a connector having an outer flange on the body with an outer ring formed thereon, with a portion of the body formed as a rectangular prism with a hexagonal base. [Figure 13] a is a view of a body with a flange and a seal for a cable; b is a view of a body with a conical flange and a seal for a cable. [Figure 14] a is a view of a body having a sealing portion and a conical step on the outer surface; b is a view of a connector body having an outer flange and a cable sealing portion and a gasket under the flange; c is a view of a body having a flange at one end, a cable sealing portion and an inner flange within the through opening against which the cable sealing portion is supported. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] The connector, in particular for attaching an electric cable to a wall 4 of a housing, comprises an outer cylindrical body 1 in the form of a sleeve with a through opening 3. The body 1 with a conical flange 9 is placed in the opening of the wall 4, where an outer ring 7 is formed on the outer surface of the body 1 upon fastening with a defined force F1 acting parallel to the axis of symmetry of the body 1. The body 1 forms a step resulting from the difference in wall thickness of the walls of the body 1. The cable 6 is radially fastened with a defined force F2 at the end of the body 1 and lies in the through opening 3 of the body 1. The radial fastening forms a recess on the body 1 (FIGS. 1, 2).

[0030] In another embodiment, the outer surface of the body 1 comprises a step 11 resulting from a difference in wall thickness of the walls of the body 1. When the body 1 is placed in the opening of the wall 4 at the thinner wall thickness and fastened at the thinner wall thickness with a defined force F1 acting parallel to the axis of symmetry of the body 1, an outer ring 7 is formed on the outer surface of the body 1. Inside the through opening 3, a seal 8 is present (Figure 3).

[0031] The next example is a connector body 1 that is provided with a flange 9 on its outer surface at a certain distance from the end of the body, and with a sealing portion 8 (FIG. 4).

[0032] The next alternative is a connector body 1 with a conical flange 9. Located in the through opening 3 is an inner flange 10 on which the seal 8 is placed (FIG. 5).

[0033] In another alternative, the connector body 1 has an outer flange 9 at one end, on which the gasket 5 is placed. A seal 8 is arranged inside the through opening 3 (FIG. 6).

[0034] In the next alternative embodiment of the connector, the body 1 with the gasket 5 is placed in the opening in the wall 4 and, upon tightening with a predetermined force F1 acting parallel to the axis of symmetry of the body 1, an outer ring 7 is formed (Figure 7).

[0035] The next variant of the connector is characterized in that the body 1 with the flange 9 and the gasket 5 located therein is placed in an opening in the wall 4, where, when fastening with a given force F1 acting parallel to the axis of symmetry of the body 1, an outer ring 7 is formed on the outer surface of the body 1. A seal 8, in which the cable 6 is placed, is located in the through opening 3. On the other hand, when fastening with a given force F2 radially at the end of the body 1, the connector has a shape similar to a rectangular prism with a hexagonal base (Fig. 8, Fig. 9).

[0036] Another variation of the connector has a shape similar to a rectangular prism with a square base when fastened (Figures 10, 11).

[0037] The connector body 1 can have a wide variety of shapes, as illustrated in the accompanying drawings of FIGS.

Claims

1. A method for attaching a cable, particularly an electric cable, to a wall, in which the sleeve constituting the body (1) of the connector, which serves as an outer shell, is placed in an opening in the wall (4), so that the abutment surface (2) of the body (1) abuts against the wall (4), and then a predetermined force F is applied in the axial direction. １ , a part of the body (1) is deformed and an outer ring (7) is formed on the body (1) of the connector near the wall (4) of the housing, and a cable (6), in particular an electric cable, is inserted into the through opening (3) of the body (1) of the connector, and then the part of the body (1) is deformed by the force F ２ The method of claim 1, further comprising:

2. 2. The method according to claim 1, characterized in that, before carrying out the radial crimping or fastening, a flexible seal (8) in which the cable (6), in particular an electric cable, is arranged is inserted into the through opening (3) of the body (1) of the connector.

3. 2. The method according to claim 1, characterized in that a gasket (5) is placed against the abutment surface (2) and against the surface of the wall (4) before the body (1) of the connector is installed in the opening in the wall (4).

4. 2. The method according to claim 1, characterized in that the gasket (5) is placed against a surface of the wall (4) after the body (1) of the connector is placed in the opening in the wall (4) and before the ring (7) is formed.

5. A connector for fixing or attaching a cable, in particular an electric cable, forming a passage in a wall, characterized in that an outer shell sleeve constituting the body (1) of the connector is placed in an opening in the wall (4) via a formed outer ring (7) and a contact surface (2), and the body (1) of the connector further comprises a through opening (3) in which a cable (6), in particular an electric cable, is arranged, which is radially fastened in a portion of the body (1) of the connector.

6. The connector according to claim 5, wherein the main body (1) forming the outer shell of the connector has a wall thickness greater in the radially fastened portion than in the portion deformed by an axial force.

7. 6. A connector according to claim 5, characterized in that inside the through opening (3) there is an inner flange (10).

8. The connector according to claim 5, characterized in that the abutment surface (2) of the body (1) of the connector is the result of the change in the wall thickness of the body (1), i.e. the wall thickness being varied, as described in claim 6.

9. A connector according to claim 5, characterized in that the body (1) of the connector has an outer flange (9) provided with the abutment surface (2).

10. 6. A connector according to claim 5, characterized in that inside the through opening (3) a flexible sealing part (8) is provided, inside which a cable (6), in particular an electrical cable, is arranged.

11. 6. A connector according to claim 5, characterized in that the gasket (5) abutting against the wall (4) is located between the body (1) and the wall (4) of the connector.

12. A connector according to claim 5, characterized in that the abutment surface (2) of the body (1) of the connector is a conical surface.

13. 6. A connector according to claim 5, characterized in that the abutment surface (2) of the body (1) of the connector is a surface perpendicular to the body (1).

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