Cable joint assembly

Abstract

The utility model relates to a cable joint assembly comprising a connecting conductor which is tubular and is suitable for connecting two cable conductors, and the connecting conductor is provided with a first hole which is recessed inwards from the outer wall of the connecting conductor; the shielding cover is configured to be in a tubular shape surrounding the connecting conductor, the shielding cover is provided with a second hole, and the second hole penetrates through the wall thickness of the shielding cover and is aligned with the first hole; therefore, the shielding case is electrically connected with the connecting conductor through a connecting piece which passes through the second hole and extends into the first hole. According to the cable joint assembly provided by the utility model, reliable electric connection between the shielding cover and the connecting conductor can be ensured through simple operation, so that the risk of internal discharge caused by potential difference is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cable fittings technology, and more specifically, to a cable joint assembly. Background Technology

[0002] In the field of power transmission, cable connectors are common cable accessories used to connect two sections of cable, for example, by crimping them to the ends of the cable conductors. Some cable connector products include a metal shield to shield the electric field and provide voltage equalization. Typically, to ensure the installation and reliable operation of the shield, different specifications of shields need to be designed for cables with different cross-sectional dimensions.

[0003] In the prior art, the shielding cover, for example, uses a cross-sectional dimension of approximately 2.5 mm. 2 The tinned copper wire is connected to the connecting conductor, and this tinned copper wire is fixed to the shield and the connecting conductor, for example, by riveting or screwing. However, when installing and rotating the outer rubber body, the tinned copper wire is prone to breakage, causing the connection between the shield and the connecting conductor to fail. This connection failure creates a potential difference between the cable conductor and the shield, which can cause internal discharge, ultimately leading to the failure of the cable connector product. Utility Model Content

[0004] The purpose of this invention is to provide a cable connector assembly that overcomes at least one deficiency in the prior art. More specifically, in the cable connector assembly according to this invention, a reliable electrical connection between the shield and the connecting conductor can be ensured through simple operation, thereby avoiding the risk of internal discharge due to potential difference.

[0005] To address this, the present invention provides a cable connector assembly, comprising: a connecting conductor, the connecting conductor being tubular in shape and adapted to connect two cable conductors, wherein the connecting conductor has a first hole recessed inward from its outer wall; and a shielding cover, the shielding cover being tubular in shape surrounding the connecting conductor, wherein the shielding cover has a second hole penetrating the wall thickness of the shielding cover and aligned with the first hole, such that the shielding cover is electrically connected to the connecting conductor through a connector passing through and extending into the first hole.

[0006] Based on the above technical concept, the present invention may further include any one or more of the following optional forms.

[0007] In some alternative forms, the connector is a bolt, and the first hole is provided with internal threads.

[0008] In some alternative forms, the connecting conductor is provided with two first holes that are opposite each other in its radial direction, and the shielding cover includes a first half and a second half that are fixedly connected to each other, each of the first half and the second half being provided with a second hole aligned with the corresponding first hole.

[0009] In some alternative forms, the connecting conductor includes an annular blocking portion that protrudes from the inner wall of the connecting conductor at a midpoint in the axial direction, and the first hole is located at the midpoint in the axial direction of the connecting conductor.

[0010] In some alternative forms, the shield includes an annular protrusion that extends from the inner wall of the shield at a midpoint in the axial direction of the shield, and the second hole penetrates the protrusion.

[0011] In some alternative forms, the protrusion abuts against the outer wall of the connecting conductor.

[0012] In some alternative forms, the inner diameter of the protrusion is equal to the outer diameter of the connecting conductor.

[0013] In some alternative configurations, the second hole is a stepped hole.

[0014] In some alternative forms, the outer diameter of the shield is set to be equal to the outer diameter of the cable insulation layer surrounding each cable conductor.

[0015] In some alternative configurations, the cross-sectional area of ​​the connecting conductor is not less than the cross-sectional area of ​​each cable conductor.

[0016] Compared with the prior art, the cable connector assembly of this utility model has several beneficial technical effects, especially: compared with the use of copper wire with a small cross-sectional size in the prior art, this utility model uses electrical connectors such as bolts to directly connect the shield to the connecting conductor crimped to the end of the cable conductor. The overall structure of this method is simple and reliable, easy to operate, and applicable to various types of cable connector products. It can also ensure sufficient mechanical strength and contact area, thus effectively solving the potential difference problem between the shield and the connecting conductor and avoiding the risk of internal discharge. Attached Figure Description

[0017] Other features and advantages of this invention will be better understood through the following detailed description of preferred embodiments in conjunction with the accompanying drawings, in which the same reference numerals denote the same or similar parts.

[0018] Figure 1A This is a perspective view of the shielding cover of a cable connector assembly provided according to one embodiment of the present invention.

[0019] Figure 1B This is a cross-sectional view of the shielding cover.

[0020] Figure 1C This is a side view of the shield.

[0021] Figure 2A This is a three-dimensional view of the connecting conductors of the cable connector assembly.

[0022] Figure 2B This is a cross-sectional view of the connecting conductor.

[0023] Figure 3 This is a cross-sectional view of the cable connector assembly in use.

[0024] The elements in the accompanying drawings are shown for simplicity and clarity and are not necessarily drawn to exact scale. It should be understood that these drawings are not only for explaining and illustrating the invention, but also, where necessary, for defining the invention. Detailed Implementation

[0025] The implementation and use of the embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are merely illustrative of particular ways of implementing and using this utility model, and are not intended to limit the scope of protection of this utility model.

[0026] In this specification, unless otherwise expressly specified and limited, "axial" and "radial" are understood to refer to the axial and radial directions of a generally cylindrical tubular connecting conductor and shield.

[0027] A preferred embodiment of the cable connector assembly according to the present invention will now be described with reference to the accompanying drawings. As shown in the figures, the cable connector assembly according to the present invention includes a shield 100 (reference 100). Figures 1A to 1C ) and connecting conductor 200 (reference) Figure 2A and Figure 2B ).

[0028] like Figure 2A and Figure 2B as well as Figure 3As shown, the connecting conductor 200 is constructed as a generally cylindrical tubular shape with an outer diameter D4 and an inner diameter D5. That is, the tubular body 210 of the connecting conductor 200 is defined by its outer wall 211 and inner wall 212, wherein the diameter of the outer wall 211 is D4 and the diameter of the inner wall 212 is D5. Furthermore, the connecting conductor 200 includes an annular blocking portion 220, which protrudes from the inner wall 212 at a midpoint in the axial direction of the connecting conductor 200, such that the left side of the blocking portion 220 and the inner wall 212 define a first receiving portion 230 for insertion of the end 311 of the conductor 310 of the first cable 300, and the right side of the blocking portion 220 and the inner wall 212 define a second receiving portion 240 for insertion of the end 411 of the conductor 410 of the second cable 400. It is understood that the diameter of the inner wall 221 of the blocking part 220 is smaller than the diameter of the conductor 310 of the first cable 300 and the conductor 410 of the second cable 400, so that after the conductor 310 of the first cable 300 and the conductor 410 of the second cable 400 are respectively inserted into the first receiving part 230 and the second receiving part 240, they can be blocked by the blocking part 220 and thus precisely limited. Then, the connecting conductor 200 is pressed onto the ends 311 of the conductor 310 of the first cable 300 and the ends 411 of the conductor 410 of the second cable 400 on both sides of the blocking part 220 by a crimping tool, so that the conductor 310 of the first cable 300 and the conductor 410 of the second cable 400 form an electrical connection through the connecting conductor 200. Furthermore, it is understood that the cross-sectional area of ​​the connecting conductor 200 at each axial position is typically set to be no less than the cross-sectional area of ​​the conductor 310 of the first cable 300 and the conductor 410 of the second cable 400, in order to ensure the current-carrying capacity of the connecting conductor 200.

[0029] According to this utility model, the connecting conductor 200 is provided with a first hole 250 recessed inward from its outer wall 211, for example, in a radial direction, for the connector 600 to extend into. The first hole 250 is, for example, located at the middle position in the axial direction of the connecting conductor 200, i.e., radially aligned with the blocking portion 220. The connector 600 is, for example, a bolt, used to fix the connecting conductor 200 to the outer shield 100 and form an electrical connection, and the first hole 250 is provided with an internal thread that matches the bolt. It is understood that, due to the provision of the blocking portion 220, the first hole 250 can be ensured to have sufficient depth to increase the contact area between the connector 600 and the connecting conductor 200. In the illustrated embodiment, particularly as shown... Figure 2B As shown, the connecting conductor 200 is preferably provided with two first holes 250 that are opposite to each other in its radial direction.

[0030] like Figures 1A to 1C as well as Figure 3 As shown, the shield 100 is constructed as a generally cylindrical tubular shape having an outer diameter D1 and an inner diameter D2, surrounding the connecting conductor 200. That is, the tubular body 110 of the shield 100 is defined by its outer wall 111 and inner wall 112, wherein the diameter of the outer wall 111 is D1 and the diameter of the inner wall 112 is D2. It can be understood that, as Figure 3 As shown, the outer diameter D1 of the shield 100 is set to be substantially equal to the outer diameter of the insulation layer 320 surrounding the conductor 310 of the first cable 300 and the outer diameter of the insulation layer 420 surrounding the conductor 410 of the second cable 400, so as to facilitate the installation and rotation of the outer rubber body 500 at the location of the cable joint. In the illustrated embodiment, the shield 100 includes a first half 100a and a second half 100b having the same shape and size and being generally semi-cylindrical, the first half 100a and the second half 100b being fixedly connected to each other to form a generally cylindrical tubular structure. In addition, the shield 100 also includes an annular protrusion 120, which protrudes from the inner wall 112 of the shield 100 at the middle position in the axial direction of the shield 100, such that the left side of the protrusion 120 and the inner wall 112 of the shield 100 define a first through portion 130 through which the left half of the connecting conductor 200 passes, and the right side of the protrusion 120 and the inner wall 112 of the shield 100 define a second through portion 140 through which the right half of the connecting conductor 200 passes. The first through portion 130 and the second through portion 140 are connected through the central hole of the protrusion 120. It is understood that the inner diameter D3 of the protrusion 120 is not less than the outer diameter D4 of the connecting conductor 200 so that the connecting conductor 200 can pass through the central hole of the protrusion 120, and the protrusion 120 is aligned with the blocking portion 220 of the connecting conductor 200 in the radial direction of the shield 100 and the connecting conductor 200. Preferably, the inner diameter D3 of the protrusion 120 is substantially equal to the outer diameter D4 of the connecting conductor 200.

[0031] According to this utility model, the shielding cover 100 is provided with a second hole 150 penetrating the wall thickness of the shielding cover 100. The second hole 150 is, for example, located at the middle position in the axial direction of the shielding cover 100 to penetrate the protrusion 120 and align with a first hole 250 on the connecting conductor 200, so that the shielding cover 100 can be electrically connected to the connecting conductor 200 through a connector 600 passing through the second hole 150 and extending into the first hole 250. In the illustrated embodiment, the first half 100a and the second half 100b of the shielding cover 100 each have a second hole 150. These two second holes 150 are opposite each other in the radial direction of the shielding cover 100 and are respectively aligned with two corresponding first holes 250 on the connecting conductor 200. When the connector 600 is a bolt, the second hole 150 may optionally be provided with an internal thread that matches the bolt, and the second hole 150 is preferably a stepped hole so that when the bolt is tightened, the head of the bolt is tightened and abuts against the stepped surface 151, thereby allowing the inner wall 121 of the protrusion 120 to abut against the outer wall 211 of the connecting conductor 200.

[0032] Therefore, in this cable connector assembly, the abutment between the inner wall 121 of the protrusion 120 and the outer wall 211 of the connecting conductor 200, and the connection 600, ensure a reliable mechanical and electrical connection between the shield 100 and the connecting conductor 200 (avoiding the risk of copper wire breakage as in the prior art). Thus, the potential difference problem between the shield 100 and the connecting conductor 200 can be effectively solved with simple operations (e.g., tightening bolts with simple tools), avoiding the risk of internal discharge. The solution of this utility model has undergone installation testing, and electrical performance tests were conducted on the entire product after installation. These tests proved that the solution meets the specified requirements. Furthermore, the thickness and other dimensional parameters of the connecting conductor 200 and the shield 100 can be determined according to the different types of cables to be connected. In other words, the design concept of this utility model is compatible with various types of cables; it is only necessary to determine the thickness and other dimensional parameters of the connecting conductor 200 and the shield 100 accordingly based on the type of cable and ensure sufficient contact area between the shield 100 and the connecting conductor 200.

[0033] The technical content and features of this utility model have been disclosed above. However, it is understood that under the creative concept of this utility model, those skilled in the art can make various changes and improvements to the above-disclosed concept, but all of them fall within the protection scope of this utility model.

[0034] The above description of the embodiments is illustrative and not restrictive, and the scope of protection of this utility model is determined by the claims.

Claims

1. A cable splice assembly, characterized by The connection conductor (200) is configured as a tube and is adapted to connect two cable conductors (310, 410), wherein the connection conductor (200) is provided with a first hole (250) recessed inward from an outer wall (211) thereof; and The shielding cover (100) is configured as a tube surrounding the connection conductor (200), wherein the shielding cover (100) is provided with a second hole (150) penetrating a wall thickness of the shielding cover (100) and aligned with the first hole (250) so that the shielding cover (100) is electrically connected with the connection conductor (200) by a connecting piece (600) passing through the second hole (150) and extending into the first hole (250). The connecting piece (600) is a bolt, and the first hole (250) is provided with an internal thread.

2. The cable splice assembly of claim 1, wherein, The connection conductor (200) is provided with two first holes (250) opposite to each other in a radial direction thereof, and the shielding cover (100) comprises a first half (100a) and a second half (100b) fixedly connected with each other, each of the first half (100a) and the second half (100b) being provided with one second hole (150) aligned with a corresponding first hole (250).

3. The cable splice assembly of claim 1, wherein, The connection conductor (200) comprises an annular blocking portion (220) protruding from an inner wall (212) of the connection conductor (200) at a middle position in an axial direction of the connection conductor (200), and the first hole (250) is arranged at the middle position in the axial direction of the connection conductor (200).

4. The cable joint assembly of any one of claims 1 to 3, characterized in that, The shielding cover (100) comprises an annular protruding portion (120) protruding from an inner wall (112) of the shielding cover (100) at a middle position in an axial direction of the shielding cover (100), and the second hole (150) penetrates the protruding portion (120).

5. The cable joint assembly of any one of claims 1 to 3, wherein, The protruding portion (120) abuts against an outer wall (211) of the connection conductor (200).

6. The cable splice assembly of claim 5, wherein, An inner diameter of the protruding portion (120) is equal to an outer diameter of the connection conductor (200).

7. The cable splice assembly of claim 5, wherein, The second hole (150) is a stepped hole.

8. The cable splice assembly of claim 5, wherein, An outer diameter of the shielding cover (100) is arranged to be equal to an outer diameter of a cable insulation layer (320, 420) surrounding each cable conductor (310, 410).

9. The cable joint assembly of any one of claims 1 to 3, wherein, A cross-sectional area of the connection conductor (200) is not less than a cross-sectional area of each cable conductor (310, 410).

10. The cable splice assembly of any one of claims 1-3, wherein, ​

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