Tip for electrical connection and method of its attachment

FIELD: electricity.

SUBSTANCE: tip for electrical connection contains sleeve (2) with cavity (9) partially filled with contact lubrication meant for introduction of electric cable (22) end in it and containing section (5) of crimping designed with possibility of its radial deforming. End includes also a plug (15) meant for confinement of contact lubrication (14) in cavity (9). Plug (15) has transverse membrane (16) designed with possibility of its destruction by electric cable (22) when it is being inserted in cavity (9). Plug (15) is at least one section located inside section (5) of crimping. Contact lubrication (14) is located between bottom part (12) of cavity (9) and membrane (16). Connection method includes a stage at which transverse membrane (16) is destroyed by end of electric cable (22) when it is being inserted in cavity (9).

EFFECT: improving airtightness of electrical connection after its crimping.

16 cl, 11 dwg

 

The technical field

The present invention relates to the field of electrical connections.

More specifically, the present invention relates to a tip of the wire used for electrical connections.

Prior art

It is known that there are tips containing the coupling, provided with a plot of compression associated with the site of connection terminals, for interoperability, which is the proposed tip.

In particular, from patent document FR 2620579 known tip, the coupling of which, containing the cavity, is placed the end of the electrical cable, and the cavity is partially filled with contact grease designed to improve the electrical connection of the handpiece with an electric cable. This tip further comprises an annular sealing gasket sealing, to ensure the tightness of the connection of the handpiece with cable.

In the process of insertion of the cable into the cavity, the cable is immersed in the contact lubricant, after which the operator carries out compression of the tip.

A brief statement of the substance of the invention

The task of the invention is to improve the handpiece of this type from the point of view of its method of preparation, and from the point of view of its use.

the La solve this technical problem the present invention proposes a tip for electric connection, containing a coupler having a cavity partially filled with contact grease, designed for insertion of the end of the electric cable and contains a plot of compression, made with the possibility of radial deformation, characterized in that the handpiece further comprises a stopper for retaining the contact of the lubricant in the cavity, and this tube has a transverse membrane made with the possibility of its destruction by the end of the electrical cable during its insertion in the cavity, and the tube has at least one site located within the area of compression, with contact grease is located between the bottom part of the cavity and the membrane.

Thus, tube, ensuring the retention of the contact lubricant in the cavity before attaching the cable remains in place when the cable is inserted, and the membrane is simply torn by the end of the cable so that there was no need to remove this tube, which provides the operator with the gain in time. This tube is located in the zone of the coupling, which is subjected to compression, so that, being sandwiched between the cable and the walls objetos clutch, this tube could contribute to the sealing of the connection (i.e. the connection between the lug and the cable).

In accordance with the characteristics of particularly simple udobnoe implementation of a manufacturing process, and process of use:

the cavity has a tubular shape; and/or

the cap has a tubular section, and the thickness of the membrane is smaller than the thickness of the tubular section; and/or

the tube has a first end located opposite the bottom portion, and a second end located at the level of the hole, which is made in the cavity opposite with respect to the bottom part; and/or

the membrane is located from the first end; or

- membrane side of the second end; or

the membrane is located in an intermediate position between the first end and the second end; and/or

the tube contains an annular ledge located outside the cavity and opposite the free end of the coupling; and/or

the tube is made of silicone; and/or

the tip is made of aluminum; and/or

- contact lubricant contains oil and zinc balls; and/or

the handpiece further comprises a flat plot associated with the clutch and flat plot contains a through hole to accommodate the rod terminals, for interoperability, which made this tip; and/or

the coupling includes, between its bottom part and parcel of compression, the second section compression, made with the possibility of radial deformation and to accommodate the end of the electric cable.

In accordance with the characteristics of particularly simple and convenient implementation as the process of making and process of using:

the method additionally includes the stage at which compresses the plot of compression, at least on the level section of the tube, which is located on the site of compression;

in the process stage compression compresses the plot of compression at the level of the tube; and/or

since the coupling includes, between its bottom part and parcel of compression of the second section of the compression, this method additionally includes the stage at which compresses the second section of the compression, and this step takes place before the execution stage of the compression section of the compression.

Brief description of drawings

The invention is further explained in the description of the preferred variants of the embodiment with reference to the accompanying drawings, in which:

Figure 1 depicts a view in section of a handpiece in accordance with the invention and to the blanching, prepared to be inserted into the handpiece;

Figure 2 is a view in section of the tube illustrated in figure 1;

Figure 3 is a view in section, where the cable partially inserted into the tube until its membrane, is subject to destruction;

4 is a view, in section, where the cable is fully inserted into the cavity of the handpiece;

5 is a view, in section, where the tip is compressed at the level of the end of the cable;

6 is a view, in section, where the tip is compressed at the level of the tube;

7 is a General view of the handpiece and cable, shown in Fig.6, with a partial tear-out tip;

Fig - General view, the tip of the cable;

Figures 9 and 10 species in the context of two variants of realization of the tube shown in figure 2, respectively with a membrane that is situated in some intermediate position, and with a membrane located on the side of the second tube end;

11 is a view in section of another variant of implementation of the tube of the handpiece in accordance with the invention, but without the circular protrusion at its free end with a membrane located at some intermediate position.

Description of the preferred embodiment variants of the invention

Tip 1, are given in the Appendix drawings, contains a clutch 2, connected by means of the transition section 3 flat plot 4 connections.

Nakonec the IR 1 is made of aluminum.

The clutch 2 generally has a tubular shape and includes a first cylindrical segment 5 seal, which forms the first section of compression, as well as a cylindrical segment 6 accession, which forms the second section of the compression.

Flat plot 4 has a surface area of contact, and has generally the shape of a parallelepiped with a free end in the form of a flattened circular arc. This flat plot is near the free end hole 7 is made with the possibility of inserting in it a threaded rod (not shown)belonging to the connecting terminal supplied with, for example, the supporting flange. The mounting flange is configured to accommodate the bottom surface of the flat section 4. To ensure electrical contact between the terminal and the tip 1, this flat plot 4 is clamped between the support flange and a nut screwed on the threaded rod.

Now will be described in more detail handpiece 1 in its position before compression.

The clutch 2 has a constant outer diameter along its entire length, whereas the transitional part 3 has a specific shape that allows you to connect a flat shape section 4 with the cylindrical segment 6 attach the clutch 2.

Segment 5 seal has a tubular wall, the inner diameter of which is what I unchanged throughout its length, while the period of 6 accession is tubular in continuation of the segment 5 sealing only part of its length. The remainder of the segment 6 (ranging from flat phase 4) is integral. In the area where the segment 6 is tubular, its inner diameter less than the inner diameter of the segment 5, so that the wall segment 6 was thicker than the wall of the segment 5 sealing. Beveled edge 8 forming an annular inclined surface in the direction of the segment 6, passes between segments 5 and 6 in order to connect these two sites with different internal diameters.

Thus, the clutch 2 has a cylindrical cavity 9, the first portion 10 which is held at the level of the segment 5 of the seal, and the second part 11 is held at the level of the segment 6 of the accession. The cavity 9 has a bottom portion 12 and the opening 13, the opposite of this bottom part 12.

The second portion 11 partially filled with contact grease 14 containing oil and zinc balls. Contact grease 14 allows you to break a film of aluminum oxide that forms on the surface of the wall of the cavity 9 in contact with air.

The cavity 9 and, more specifically, the hole 13, covered with made of silicone tube 15 (figure 2). In accordance with another way to implement this tube runs from the mater is Ala, non-silicone, representing the properties required from the point of view of providing sealing. The tube 15 is tubular and has an outer diameter corresponding to the inner diameter of the segment 5. The tube has at one of its ends 17 destructible membrane 16, which closes at the end 17 of the tube 15. At the other end 18, the opposite end 17 of the tube 15 has an annular ledge 20, passing in a plane parallel to the plane in which the membrane 16.

The tube 15 is placed in the handpiece 1 through the opening 13 so that the annular projection 20 located opposite the free end of the tubular wall segment 5. The membrane 16 is thus immersed inside of the first section 10 and the side surface of the tube 15 is in contact with the side surface portions of the path of the first section 10.

Contact grease 14 is placed inside the second cavity portion 11 located between a bottom part 12 and the membrane 16. In this position, the lubricant 14 is not able to flow from the cavity 9. While no foreign bodies can get into the cavity 9 and, in particular, in its second section 11.

The tube 15 has a double function: on the one hand, the retention pin lubrication and prevention of penetration of foreign bodies, and on the other hand, is the provision of g is rotiserie. Indeed, the sealant may be necessary when using these tips in order to avoid water penetration in the segment of the connection, which can lead to undesirable effects on the quality of the connection, as in the case of high humidity or the presence of water on the cable, this water can move along the cable in the capillary effect.

As for sealing, the very existence tube (located between the coupler and the cable and the contact between the lubricant and the external environment) is the first factor that contributes to sealing. Another factor is the material from which the tube is made, and the silicone is especially effective to promote the function of sealing. However, for the manufacture of tubes can be selected and other material.

Now with reference to Fig 1 and Fig. 3 through 6 will be described the process of insertion of the cable into the tip 1 and the compression of the tip.

Tip 1 made interoperable with made of aluminium cable 22, containing on their surface a coating in the form of the insulating layer 23. The end of the cable 22 is released from covering the insulating layer, i.e. does not contain an insulating layer 23 on the level of its end. The cable 22 is made of aluminum.

First, the bare end of the cable 22 is inserted into Palast the 9 through the opening in the tube until its membrane 16. Continuing the insert, destroy this membrane 16 under the action of pressure of the cable 22 (see figure 3). Then perform further insertion of the cable 22 forward until the point where the cable come into contact with contact grease 14, and then will face the bottom part 12 of the cavity 9 (see figure 4). In this position, the interaction of the tip 1 and the cable 22 and the exposed portion of the cable 22 extends beyond the tube 15. When this tube 15 is located just opposite the insulating layer 23 of the cable 22.

In contact with the lubricant layer 14 of aluminum oxide (not shown), which is formed on the surface of the exposed part of the cable 22 enters into chemical reactions.

As shown in figure 5, the line segment joining compresses in a known manner. The tubular wall section of the segment 6, corresponding to the cavity portion 11, is in contact with the bared end of the cable 22. Contact grease 14 in its predominant part is extruded in the direction of the first section 10 of the cavity, and a thin layer of this contact lubricant 14 may remain between the surface end of the cable 22 and the inner surface of the above-mentioned area of the segment 6.

Then provide compression of the segment 5 of the seal so that the side wall of the tube 15 was sandwiched between the side wall of the segment 5 of the seal and the cable 22 and, more specifically, to whom she was pressed against the insulating layer 23 of the cable so to ensure a satisfactory degree of sealing. When this pin grease 14 is the remaining free space between the cable 22 or the insulating layer 23, the tube 15, the beveled edge 8 and the side surface of the second cavity portion 11. The amount of contact lubricant located in the cavity 9, is chosen so that it matches the free volume of the cavity 9 after insertion of the cable 22 and the implementation of compression.

In accordance with the options of implementation tube it is desirable that the pieces of the membrane after its destruction remained localized at the level of the tube so that they were located before the first end. Tube 115 presented on Fig.9, contains the membrane 116, located at some intermediate position approximately half the distance between the ends 117 and 118, while the membrane tube 216 215 is located on the second end 218.

In accordance with a variant implementation of the presented figure 11, the stopper 315 does not contain annular ledge.

In accordance with a variant of this method implementation tube is shorter than the tube, presented on other drawings.

In accordance with the variants of the method of implementation tube made of a material other than silicone, and/or the material from which made the cable and n is konecnik, represents other material suitable for the implementation of compounds of this type, and/or contact the lubricant does not contain zinc balls.

In accordance with another alternative implementation, the membrane has a shape that is not flat, for example, concave in the direction of insertion of the cable into the cavity.

In accordance with another method of implementation, not are given in Appendix figures, the area of contact surface has a different shape, for example a tubular shape.

Can be considered also other embodiments of the tip, is not beyond the scope of the invention. In particular, the area of connection may be adapted to be used in this case, the terminal, or the outer shape of the tip and, in particular, the zone of compression, can present a different profile.

1. Tip for electrical connection containing a coupler having a cavity (9), partially filled with contact grease, designed to accommodate the end of an electric cable (22) and contains plot (5) compression, made with the possibility of radial deformation, wherein the handpiece further comprises a stopper (15, 115, 215, 315) for holding contact lubricant (14) inside the cavity (9), which has a cross membrane(16, 116, 216, 316), made with the ruin is of an electric cable (22) the process of its insertion in the cavity (9), the tube represents at least one site located within the area (5) compression, with contact grease (14) is located between the bottom part (12) of the cavity (9) and membrane(16, 116, 216, 316).

2. The handpiece according to claim 1, characterized in that the cavity (9) has a tubular shape.

3. The handpiece according to claim 2, characterized in that the tube (15, 115, 215, 315) has a tubular section, and the thickness of the membrane (16, 116, 216, 316) is less than the thickness of the tubular section.

4. The handpiece according to any one of claims 1 to 3, characterized in that the tube (15, 115, 215, 315) has a first end(17, 117, 217, 317), situated opposite its bottom part (12), and the second end(18, 118, 218, 318), located at the level of the holes (13)made in the cavity (9) opposite the bottom (12).

5. The handpiece according to claim 4, characterized in that the membrane (16) is located from the first end (17) of the tube.

6. The handpiece according to claim 4, characterized in that the membrane (216) is located on the side of the second end (218) of the tube.

7. The handpiece according to claim 4, characterized in that the membrane (116, 316) is located in an intermediate position between the first end (117, 317) and second end (118, 318).

8. The handpiece according to any one of claim 2 and 3, characterized in that the tube (15, 115, 215) contains an annular protrusion (20, 120, 220), located at the end of the cavity (9) opposite the free end of the coupling (2).

9. The handpiece according to any one of claims 1 to 3, the tives such as those the tube is made of silicone.

10. The handpiece according to any one of claims 1 to 3, characterized in that the tip is made of aluminum.

11. The handpiece according to any one of claims 1 to 3, characterized in that the contact lubricant (14) contains oil and zinc balls.

12. The handpiece according to any one of claims 1 to 3, characterized in that it further comprises a flat section (4)associated with the clutch (2), and flat section (4) contains the penetration hole (7) to accommodate the stem of the contact terminals to interact with which is the tip.

13. The handpiece according to any one of claims 1 to 3, characterized in that the coupling (2) contains between a bottom part (12) and section (5) of the second compression area (6) compression, made with the possibility of radial deformation and receiving end of an electric cable (22).

14. The method of attaching a tip for electric connection to the power cable, characterized in that the method comprises the steps that prepare the handpiece according to any one of claims 1 to 13, prepare electric cable (22), the end of which is made with the possibility of inserting into the cavity (9), destroy cross the membrane(16, 116, 216, 316), which contains the tube(15, 115, 215, 315), by the end of the electric cable (22) during its insertion in said cavity (9).

15. The method according to 14, wherein the l is further compresses the plot (5) compression, at least at the level of plot tube(15, 115, 215, 315), which is located within the area (5) compression.

16. The method according to item 15, wherein the coupling (2) contains between a bottom part (12) and section (5) of the second compression section compresses, the method additionally includes the stage at which compresses the second section (6) compression, and this step is carried out before the execution stage of the compression section (5) compression.



 

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