Connecting structure of aluminum alloy cable and applied inner cone terminal

Abstract

The utility model discloses a connecting structure and an inner cone terminal of an aluminum alloy cable, which comprise a connecting contact with a cable connecting cavity inside, a plurality of screw holes are arranged on the periphery of the connecting contact, and screws are in threaded connection with the screw holes until the screws extend into the cable connecting cavity so as to abut against and fix the cable. Through the stable connection between the screw and the screw hole, the cable limited by the screw is not easy to loosen, and through the distance of the screw extending into the cable connection cavity, cables with various different section specifications can be adaptively installed in the cable connection cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable plug -in equipment field, especially a kind of connecting structure of aluminium alloy cable and the inner cone terminal applied. BACKGROUND

[0002] In power system, copper core cable is most widely applied due to its good conductivity performance.But copper metal is replaced by aluminium core and aluminium alloy cable in some specific occasions due to its high cost, heavy weight and other problems.The advantages of aluminium core cable include lower cost, light weight, good conductivity performance, strong corrosion resistance and other characteristics, which make it widely used in long-distance power transmission system, distribution system, industrial field and new energy field.For example, in long-distance power transmission system, aluminium core cable is favored due to its lighter weight and better conductivity performance.

[0003] At present, the surrounding pressure mode is generally used for domestic cable crimping, but the problems such as the quality of crimping pliers and the mismatch between crimping tube and pressure die will lead to unreliable crimping, and the copper core conductor is less affected due to its excellent creep resistance; aluminium alloy cable will be greatly affected by these problems, therefore, it is necessary to develop and design a connecting structure for aluminium alloy cable, which is used for the connection between inner cone terminal and switch cabinet, and the structure requires convenient installation and use, and can realize quick installation and repair work. SUMMARY

[0004] The utility model aims at providing a kind of connecting structure of aluminium alloy cable and the inner cone terminal applied, its fixed cable is not easy to loosen and stable, simultaneously can realize the crimping of cable of different sections.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the utility model has:

[0006] As an aspect of the present application, a connecting structure for aluminium alloy cable is provided, comprising:

[0007] The connecting contact has a cable connection cavity inside;

[0008] A plurality of screw holes are provided on the outer periphery of the connecting contact, and a screw is screwed into the screw hole until the top end of the screw extends into the cable connection cavity and abuts against the cable connected and installed inside the connecting contact to fix the cable.

[0009] Compared with the prior art, the connecting structure of the aluminum alloy cable of the application comprises a connecting contact head with a cable connecting cavity inside, a plurality of screw holes are arranged on the outer periphery of the connecting contact head, and the cable is fixed against the screw holes through screwing of the screws and the screw holes until the screws extend into the cable connecting cavity.

[0010] Further, the arrangement direction of the screw holes is laterally inclined relative to the axial direction of the connecting contact head.

[0011] Further, the arrangement angle between the arrangement direction of the screw holes and the vertical direction corresponding to the axial direction of the connecting contact head is 10°.

[0012] Further, the screw holes are arranged in two, and the two screw holes are arranged on the connecting contact head with a horizontal interval of 135°.

[0013] Further, the screw holes are arranged in multiple, and the multiple screw holes are arranged on the connecting contact head as a cable fixing hole group with two screw holes in each group and with different arrangement heights on the connecting contact head.

[0014] The two screw holes in the same group are arranged with a horizontal interval of 135°.

[0015] Further, the cable fixing hole groups are arranged in two groups.

[0016] Further, the end of the screw is spherical.

[0017] Further, a ring groove is arranged on the outer periphery of the connecting contact head, and a spring contact finger is installed in the ring groove.

[0018] Further, two ring grooves are arranged on the outer periphery of the connecting contact head with an upper and lower interval.

[0019] As the second aspect of the application, an inner cone terminal is provided, comprising:

[0020] An inner cone terminal insulating part; the connecting structure of the aluminum alloy cable as described above is installed on the inner cone terminal insulating part.

[0021] In order to better understand and implement, the application will be described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structure schematic view of the connecting structure of the aluminum alloy cable installed on the inner cone terminal insulating part in the embodiment;

[0023] Figure 2is a structure sectional view of a connecting contact shown in a connecting structure of an aluminum alloy cable in the embodiment;

[0024] Figure 3 is a structure plan view of a connecting contact shown in a connecting structure of an aluminum alloy cable in the embodiment. DETAILED DESCRIPTION

[0025] In order to better illustrate the utility model, the utility model is further described in detail below with reference to the drawings.

[0026] It should be clear that the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the embodiments of the present application.

[0027] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0028] The following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the present application, it should be understood that the terms "first", "second", "third" and the like are only used to distinguish similar objects, and do not necessarily describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In addition, in the description of the present application, "multiple" means two or more, unless otherwise specified. "And / or", which describes the association between the associated objects, means that there can be three kinds of relationships, for example, A and / or B, which can mean: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents a "or" relationship between the associated objects before and after.

[0030] The following is described with a specific embodiment, as an aspect of the embodiment, as shown in Figure 1 A connecting structure of an aluminum alloy cable is provided, comprising:

[0031] A connecting contact 1 has a cable connection cavity 11 inside. The inner wall of the cable connection cavity 11 inside the connecting contact 1 is provided with a fine thread structure, the purpose of which is to increase the friction between it and the cable, which is conducive to cable fixation; and a plurality of screw holes 2 are opened on the outer periphery of the connecting contact 1, and screws 3 are threadedly fixed in the screw holes 2 until the top of the screw 3 extends into the cable connection cavity 11 and abuts against the cable connected and installed in the connecting contact 1, thereby fixing the cable.

[0032] In this embodiment, a connection structure of an aluminum alloy cable includes a connection contact 1 with a cable connection cavity 11 inside. A plurality of screw holes 2 are opened on the outer periphery of the connection contact 1. Screws 3 are threadedly connected to the screw holes 2 until the screws 3 are inserted into the cable connection cavity 11 to fix the cable. Due to the stable connection between the screws 3 and the screw holes 2, the cable limited by the screws 3 is not easy to loosen, and the distance through which the screws 3 are inserted into the cable connection cavity 11 can meet the requirements of cables with various cross-sectional specifications to be adapted and installed in the cable connection cavity 11.

[0033] In this embodiment, preferably, the setting direction of the screw hole 2 is laterally inclined relative to the axial direction of the connecting contact 1. Figure 1 as well as Figure 2 As shown in the figure, the setting direction of the screw hole 2 is tilted to the right with respect to the axial direction of the connecting contact 1. After the cable is connected and installed in the cable connection cavity 11, the screw 3 is threadedly installed in the screw hole 2, which will give the cable an upward force to prevent the cable from moving downward, thereby positioning the cable installation.

[0034] In addition, the fine thread structure provided on the inner wall of the cable connection cavity 11 creates a strong frictional force between the cable and the cable connection cavity 11 , further enabling the cable to be stably installed in the cable connection cavity 11 .

[0035] Preferably, the angle between the setting direction of the screw hole 2 and the perpendicular direction corresponding to the axial direction of the connecting contact 1 is 10°.

[0036] In this embodiment, there is a screw hole quantity setting scheme, wherein the screw holes 2 are provided with two, and the two screw holes 2 are arranged on the connection contact 1 with a horizontal interval of 135 degrees. Figure 3 As shown, the included angle between the two screw holes 2 on the vertical plane is 135°. When the cable is thin, it is avoided that the force paths provided by the bolts corresponding to the two screw holes 2 cross, resulting in the inability to tighten the cable.

[0037] In another screw hole quantity setting scheme in the embodiment, the screw holes 2 are provided in plurality, the plurality of screw holes 2 are arranged on the connecting contact 1 in groups of two screw holes 2 as a cable fixing hole group and are distinguished by the setting height on the connecting contact 1; the two screw holes 2 in the same group are arranged with a horizontal interval of 135° angle.

[0038] As preferred, from Figure 1 and Figure 3 it can be seen that the cable fixing hole group is provided in two groups, that is, the setting quantity of the screw holes 2 is four.

[0039] The same effect as the aforementioned scheme of setting two screw holes 2 is achieved, which is not described here.

[0040] It needs to be supplemented that, since the force provided by the two screw holes 2 in the same group for cable positioning is limited, which is specifically constrained by the diameter size of the bolt or the screw hole 2, after the cable fixing hole group is provided in plurality, the above constraint can be avoided, so that the force required for fixing the cable can be provided.

[0041] In the embodiment, preferably, the end of the screw 3 is spherical, which realizes a larger contact area with the cable conductor and the circular structure also avoids damaging the cable conductor core.

[0042] In the embodiment, as Figure 1 shown, the ring groove 12 is arranged on the outer periphery of the connecting contact 1, and the spring contact finger 4 is installed in the ring groove 12, the spring contact finger 4 in the embodiment is made of beryllium bronze surface silver plating material, which can solve the possible electrochemical reaction of different material surfaces, and realize installation and cooperation through contraction and rebound, and meet electrical connection.

[0043] Preferably, two ring grooves 12 are arranged on the outer periphery of the connecting contact 1 with an upper and lower interval, and the spring contact finger 4 is arranged in the two ring grooves 12.

[0044] As the second aspect of the utility model, an inner cone terminal is provided, comprising: an inner cone terminal insulating part 100; and the connecting structure of the aluminum alloy cable as described above is installed on the inner cone terminal insulating part 100; since the inner cone terminal applies the connecting structure of the aluminum alloy cable as described above, the inner cone terminal has all the beneficial effects of the connecting structure of the aluminum alloy cable, which are not described here.

[0045] According to the disclosure and teaching of the above description, the skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should also fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A connection structure of an aluminum alloy cable, characterized by comprising: The utility model relates to a connecting structure of aluminum alloy cable, which comprises: a connecting contact with a cable connecting cavity inside; a plurality of screw holes are formed on the outer periphery of the connecting contact, and a screw is screwed into each screw hole until the top end of the screw extends into the cable connecting cavity and abuts against the cable connected and installed in the connecting contact to fix the cable.

2. The connecting structure according to claim 1, wherein: the screw holes are arranged laterally inclined to the axial direction of the connecting contact.

3. The connecting structure according to claim 2, wherein: the angle between the arrangement direction of the screw holes and the perpendicular direction corresponding to the axial direction of the connecting contact is 10°.

4. The connecting structure according to claim 1, wherein: two screw holes are arranged on the connecting contact with a horizontal interval of 135°.

5. The connecting structure according to claim 1, wherein: a plurality of screw holes are arranged on the connecting contact, and two screw holes are arranged as a cable fixing hole group, and the screw holes are arranged at different heights on the connecting contact; the two screw holes in the same group are arranged with a horizontal interval of 135°.

6. The connecting structure according to claim 5, wherein: two cable fixing hole groups are arranged.

7. The connecting structure according to claim 1, wherein: the end of the screw is spherical.

8. The connecting structure according to claim 1, wherein: a ring groove is arranged on the outer periphery of the connecting contact, and a spring contact finger is sleeved and installed in the ring groove.

9. The connecting structure according to claim 8, wherein: two ring grooves are arranged on the outer periphery of the connecting contact with an upper and lower interval.

10. An inner cone termination, characterized by The utility model relates to a connecting structure of aluminum alloy cable, which comprises: an inner cone terminal insulating part; the connecting structure of the aluminum alloy cable is sleeved and installed on the inner cone terminal insulating part.

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