Inner cone type elbow cable terminal

Abstract

The utility model discloses an inner cone elbow type cable terminal which at least comprises a side expansion type inner cone sleeve, a terminal main body and a crimping type terminal. The terminal body is integrally of a bent structure, a cavity structure matched with the end of the terminal body is arranged in the side expansion type inner cone sleeve, and one end of the terminal body is inserted into the side expansion type inner cone sleeve. The side expansion type inner cone sleeve is connected with a switch cabinet panel, the terminal main body is provided with a fixing part which is connected with a switch cabinet, and the crimping type terminal is arranged in the terminal main body and is connected with a cable and the side expansion type inner cone sleeve; according to the scheme, the side expansion type inner cone sleeve is connected with the switch cabinet, and then the terminal main body is connected with the switch cabinet through the fixing part, so that a tight main body is formed among the side expansion type inner cone sleeve, the terminal main body and the switch cabinet, and the side expansion type inner cone sleeve and a cable can be stably conducted; and a connected line can be guided.

Description

Technical Field

[0001] The utility model relates to the field of terminals used on medium voltage cables of 10kV and above, in particular to an inner cone elbow type cable terminal. Background Art

[0002] The terminals currently used on medium voltage cables of 10kV and above include cold shrink indoor and outdoor terminals, outer cone detachable connections and inner cone plug-in terminals;

[0003] Cold shrink type indoor and outdoor terminals mainly connect the cables directly to the copper rack through umbrella skirt terminals and terminals;

[0004] The outer cone separable connector is mainly used to connect various types of outer cone bushings with cables. The main components include a rubber-based separable connector and a copper terminal connected by crimping. There are many types of outer cone bushings according to the rated current and standards. The most common ones are C type, A type and F type.

[0005] The inner cone plug-in terminal is mainly used to connect the inner cone bushings such as 1#, 2#, 3#, etc. that meet the EN50181 standard to the cable through a plug-in cable terminal. This connection is mostly a vertical structure, and the conductor connection purchases a strap contact structure or a spring contact structure.

[0006] However, the three types of terminals in the prior art cannot be well connected to the side-expanded inner cone casing, resulting in difficulties in connecting the cable to the side-expanded inner cone casing. Utility Model Content

[0007] The purpose of the utility model is to provide an inner cone elbow type cable terminal to solve the above-mentioned shortcomings, and solve the problem of difficulty in connecting the side expansion inner cone type casing in the prior art.

[0008] The utility model is realized by the following scheme:

[0009] An inner cone elbow cable terminal comprises a side-expanded inner cone sleeve, a terminal body and a crimping terminal; the terminal body is an overall curved structure, a cavity structure matching the end of the terminal body is arranged in the side-expanded inner cone sleeve, and one end of the terminal body is inserted into the side-expanded inner cone sleeve; the side-expanded inner cone sleeve is connected to a switch cabinet panel, a fixing portion is arranged on the terminal body and connected to the switch cabinet, and the crimping terminal is arranged in the terminal body and connected to the cable and the side-expanded inner cone sleeve.

[0010] Based on the structure of the above-mentioned inner cone elbow type cable terminal, the side expansion inner cone casing includes an epoxy body and a connecting conductor, the epoxy body is provided with a first cavity for the connecting conductor to pass through and fix, and the connecting conductor is arranged in the first cavity.

[0011] Based on the structure of the inner cone elbow type cable terminal, the epoxy body is in a truncated cone structure as a whole, and a threaded hole connected to the switch cabinet is arranged on the large end surface of the epoxy body.

[0012] Based on the structure of the inner cone elbow cable terminal, the epoxy conductor is further provided with a second cavity for connecting the terminal body, the second cavity is coaxially arranged with the first cavity, and the second cavity is arranged outside the first cavity.

[0013] Based on the structure of the above-mentioned inner cone elbow type cable terminal, the terminal body includes a first end, a second end and a central cavity, the first end and the second end are arranged at a predetermined angle, the first end can be accommodated in the second cavity and wrap the connecting conductor in the second cavity therein; the central cavity is arranged in the first end and the second end.

[0014] Based on the structure of the inner cone elbow type cable terminal, the terminal body is provided with an inner shielding layer, an insulating layer and an outer shielding layer in sequence from the central cavity to the outer side.

[0015] Based on the structure of the inner cone elbow type cable terminal, the outer shielding layer and the inner shielding layer are made of silicone rubber or EPDM rubber with semi-conductive function, and the insulating layer is made of silicone rubber or EPDM rubber with insulating performance requirements.

[0016] Based on the structure of the above-mentioned inner cone elbow type cable terminal, the crimping terminal is arranged in the central cavity, and the crimping terminal includes an opening spring, a connecting elastic contact and a crimping cable terminal; the end of the connecting elastic contact is provided with a groove for accommodating the opening spring, and the opening spring is arranged in the groove. The connecting elastic contact and the crimping cable terminal are connected by a threaded connection, and the crimping cable terminal is connected to the cable.

[0017] Based on the structure of the above-mentioned inner cone elbow type cable terminal, the open spring and the connecting type elastic contact are arranged in the first end, the crimping type cable terminal is arranged in the second end, and the crimping type cable terminal is connected to the cable by means of surrounding pressure or twisting off the bolt. At least part of the cable is arranged in the inner shielding layer, the insulating layer and the outer shielding layer, and is led out at the second end.

[0018] Based on the structure of the above-mentioned inner cone elbow type cable terminal, the fixing part includes a pressure plate and a fixing rod, the pressure plate is fixed to the terminal body and is arranged parallel to the end face of the first end, at least two connecting holes are arranged on the pressure plate, and the fixing rod is connected to the switch cabinet through the connecting holes.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] 1. In this scheme, the side-expanded inner cone bushing is connected to the switch cabinet, and then the terminal body is connected to the switch cabinet through the fixing part, so that a tight body is formed between the side-expanded inner cone bushing, the terminal body and the switch cabinet, so that the side-expanded inner cone bushing and the cable can be stably connected. At the same time, in the scheme, the bent structure of the terminal body layer can guide the connected line and reduce the space size of the line outlet, so that it can be applied to more assembly environments.

[0021] 2. Through this solution, on the one hand, it can be efficiently and stably connected to the side-expanded inner cone sleeve, and at the same time, the line can be bent and guided, which reduces the overall space occupancy and improves the overall space utilization. This solution can realize the electrical connection between the cable and the inner cone sleeve using crimp terminals and detachable connector structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model as a whole;

[0023] Figure 2 It is a schematic diagram of the overall appearance structure of the utility model;

[0024] Figure 3 It is a rear view of the utility model as a whole;

[0025] Figure 4 It is a schematic diagram of the connection structure of the open spring and the connection type elastic contact in the utility model;

[0026] Description of the drawings: 1. Side-expanded inner cone sleeve; 2. Terminal body; 3. Crimp terminal; 4. Switch cabinet; 5. Fixed part; 6. Cable; 7. Grounding structure; 11. Epoxy body; 12. Connecting conductor; 13. First cavity; 14. Threaded hole; 15. Second cavity; 21. First end; 22. Second end; 23. Central cavity; 24. Inner shielding layer; 25. Insulating layer; 26. Outer shielding layer; 31. Open spring; 32. Connecting elastic contact; 33. Crimp cable terminal; 34. Groove; 51. Pressure plate; 52. Fixing rod; 53. Connecting hole. DETAILED DESCRIPTION

[0027] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0028] Any feature disclosed in this specification (including any additional claims and abstract), unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0029] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0031] Example 1

[0032] like Figure 1 to Figure 4 As shown, the utility model provides a technical solution:

[0033] An inner cone elbow type cable terminal, which at least includes but is not limited to a side expansion inner cone sleeve 1, a terminal body 2 and a crimping terminal 3; the terminal body 2 is an overall curved structure, a cavity structure matching the end of the terminal body 2 is arranged in the side expansion inner cone sleeve 1, and one end of the terminal body 2 is inserted into the side expansion inner cone sleeve 1; the side expansion inner cone sleeve 1 is connected to the panel of the switch cabinet 4, a fixing part 5 is arranged on the terminal body 2 and connected to the switch cabinet 4, and the crimping terminal 3 is arranged in the terminal body 2 and connected to the cable 6 and the side expansion inner cone sleeve 1.

[0034] Based on the above structure, in this solution, the side-expanding inner cone bushing 1 is connected to the switch cabinet 4, and then the terminal body 2 is connected to the switch cabinet 4 through the fixing part 5, so that a tight body is formed between the side-expanding inner cone bushing 1, the terminal body 2 and the switch cabinet 4, so that the side-expanding inner cone bushing 1 and the cable 6 can be stably connected. At the same time, in the solution, the two-layer bending structure of the terminal body can guide the connected lines and reduce the spatial size of the line outlet end, so that it can be applied to more assembly environments.

[0035] As an example, the side-expanded inner cone casing 1 may include an epoxy body 11 and a connecting conductor 12, wherein a first cavity 13 for the connecting conductor 12 to pass through and be fixed is provided in the epoxy body 11, and the connecting conductor 12 is provided in the first cavity 13. Of course, as a preference, the first cavity 13 is provided at the center of the length direction of the epoxy body 11;

[0036] The epoxy body 11 is in a truncated cone shape as a whole. A threaded hole 14 connected to the switch cabinet 4 is provided on the large end surface of the epoxy body 11. The switch cabinet 4 and the epoxy body 11 are connected as a whole by bolts.

[0037] The epoxy conductor is also provided with a second cavity 15 for connecting the terminal body 2 . The second cavity 15 is coaxially arranged with the first cavity 13 . The second cavity 15 is arranged outside the first cavity 13 .

[0038] Based on the above structure, the large end surface of the epoxy body 11 is connected to the switch cabinet 4, which can make the connection area larger and increase the connection strength. The epoxy body 11 can also play a certain electrical isolation role.

[0039] As an example, the terminal body 2 may include a first end 21, a second end 22 and a central cavity 23, the first end 21 and the second end 22 are arranged at a predetermined angle, the first end 21 can be accommodated in the second cavity 15 and wrap the connecting conductor 12 in the second cavity 15 therein; the central cavity 23 is arranged in the first end 21 and the second end 22.

[0040] The terminal body 2 is provided with an inner shielding layer 24 , an insulating layer 25 and an outer shielding layer 26 in sequence from the central cavity 23 thereof to the outer side.

[0041] The outer shielding layer 26 and the inner shielding are made of silicone rubber or EPDM rubber with semi-conductive function, and the insulating layer 25 is made of silicone rubber or EPDM rubber with insulating performance requirements, and the three layers are well bonded to form a whole through the vulcanization process. The outer shielding layer 26 can also be sprayed with semi-conductive materials to achieve the function of grounding shielding through different structural designs;

[0042] Based on the above structure, the insulation performance of the entire terminal body 2 can be ensured by providing the inner shielding layer 24, the insulating layer 25 and the outer shielding layer 26, which is safer in practical use.

[0043] As an example, the crimping terminal 3 is arranged in the central cavity 23, and the crimping terminal 3 may include an opening spring 31, a connecting elastic contact 32 and a crimping cable terminal 33; the end of the connecting elastic contact 32 is provided with a groove 34 for accommodating the opening spring 31, the opening spring 31 is arranged in the groove 34, the connecting elastic contact 32 and the crimping cable terminal 33 are connected by threads, and the crimping cable terminal 33 is connected to the cable 6.

[0044] Based on the above structure, when connecting, the connection conductor 12 is inserted into the connection type elastic contact 32 with the opening spring 31. The opening spring 31 generates a spring when the connection conductor 12 is inserted, so that the connection type elastic contact 32 is in close contact with the connection conductor 12 to ensure the stability of the connection. At the same time, it is connected to the cable 6 through the crimping type cable terminal 33 to form a loop.

[0045] As an example, an open spring 31 and a connecting elastic contact 32 can be arranged in the first end 21, and a crimping cable terminal 33 can be arranged in the second end 22. The entire line is turned by connecting the connecting elastic contact 32 and the crimping cable terminal 33. The crimping cable terminal 33 is connected to the cable 6 by surrounding pressure or twisting off the bolts. At least part of the cable 6 is arranged in the inner shielding layer 24, the insulating layer 25 and the outer shielding layer 26, and is led out in the second end 22.

[0046] As an example, a grounding structure 7 may also be provided on the outer shielding layer 26 to improve the safety performance of the entire structure.

[0047] As an example, the fixing part 5 may include a pressing plate 51 and a fixing rod 52. The pressing plate 51 is fixed to the terminal body 2 and is arranged parallel to the end face of the first end portion 21. At least two connecting holes 53 are arranged on the pressing plate 51. The fixing rod 52 is connected to the switch cabinet 4 through the connecting holes 53.

[0048] Based on the above structure, the terminal body 2 is connected to the switch cabinet 4 through at least two connecting rods, so that the connection can be more stable.

[0049] Through this solution, on the one hand, it can be efficiently and stably connected to the side-expanded inner cone sleeve 1, and at the same time, the line can be bent and guided, which reduces the overall space occupancy and improves the overall space utilization. This solution can realize the electrical connection between the cable 6 and the inner cone sleeve by using a crimp terminal 3 and a detachable connector structure.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inner cone elbow type cable terminal, characterized in that: It at least includes a side-expanded inner cone bushing, a terminal body and a crimping terminal; the terminal body is an overall curved structure, a cavity structure matching the end of the terminal body is arranged in the side-expanded inner cone bushing, and one end of the terminal body is inserted into the side-expanded inner cone bushing; the side-expanded inner cone bushing is connected to the switch cabinet panel, a fixing part is arranged on the terminal body and connected to the switch cabinet, and the crimping terminal is arranged in the terminal body and connected to the cable and the side-expanded inner cone bushing.

2. An inner cone elbow type cable terminal as claimed in claim 1, characterized in that: The side-expanded inner cone casing comprises an epoxy body and a connecting conductor. A first cavity is provided in the epoxy body for the connecting conductor to pass through and be fixed. The connecting conductor is arranged in the first cavity.

3. An inner cone elbow type cable terminal as claimed in claim 2, characterized in that: The epoxy body is in a truncated cone structure as a whole, and a threaded hole connected to the switch cabinet is arranged on the large end surface of the epoxy body.

4. An inner cone elbow type cable terminal as claimed in claim 3, characterized in that: The epoxy body is also provided with a second cavity for connecting with the terminal body, the second cavity is coaxially arranged with the first cavity, and the second cavity is arranged at an outer position of the first cavity.

5. An inner cone elbow type cable terminal as claimed in claim 4, characterized in that: The terminal body includes a first end, a second end and a central cavity, the first end and the second end are arranged at a predetermined angle, the first end can be accommodated in the second cavity and wrap the connecting conductor in the second cavity therein; the central cavity is arranged in the first end and the second end.

6. An inner cone elbow type cable terminal as claimed in claim 5, characterized in that: The terminal body is provided with an inner shielding layer, an insulating layer and an outer shielding layer in sequence from the central cavity to the outside.

7. An inner cone elbow type cable terminal as claimed in claim 6, characterized in that: The outer shielding layer and the inner shielding layer are made of silicone rubber or EPDM rubber with semi-conductive function, and the insulating layer is made of silicone rubber or EPDM rubber with insulating performance requirements.

8. An inner cone elbow type cable terminal as claimed in claim 7, characterized in that: The crimping terminal is arranged in the central cavity, and the crimping terminal includes an opening spring, a connecting elastic contact and a crimping cable terminal; the end of the connecting elastic contact is provided with a groove for accommodating the opening spring, and the opening spring is arranged in the groove. The connecting elastic contact and the crimping cable terminal are connected by a thread, and the crimping cable terminal is connected to the cable.

9. An inner cone elbow type cable terminal as claimed in claim 8, characterized in that: The open spring and the connecting elastic contact are arranged in the first end, and the crimping type cable terminal is arranged in the second end. The crimping type cable terminal is connected to the cable by surrounding pressure or twisting off the bolt. At least part of the cable is arranged in the inner shielding layer, the insulating layer and the outer shielding layer, and is led out in the second end.

10. An inner cone elbow type cable terminal as claimed in claim 9, characterized in that: The fixing part includes a pressing plate and a fixing rod. The pressing plate is fixed to the terminal body and arranged parallel to the end surface of the first end. At least two connecting holes are arranged on the pressing plate. The fixing rod is connected to the switch cabinet through the connecting holes.

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