A low voltage cable for facilitating connection

Abstract

The utility model discloses a low -voltage cable convenient to butt joint, and the butt joint assembly is installed to the outer insulating layer end part, and the butt joint pipe is welded with the baffle close to the outer insulating layer place, and the inner side of butt joint pipe close to the outer insulating layer is fixedly embedded with the inner toothed ring, and the two baffle opposite faces all are penetrated with the internal thread pipe of welding, and the internal thread pipe inside is connected with the stud through thread, and the butt joint ring middle part is welded with the butt joint cone, and the two stud opposite faces all are set with the removal groove, and the both ends of two removal grooves are slidably connected with the rotary lever, the utility model discloses butt joint ring and butt joint cone pierce into the cable inner conductor, extrude cable inner conductor, make cable inner conductor end diameter expand, and then make the outer diameter of outer insulating layer end part expand, and the outer insulating layer will extrude the inner toothed ring, and the gap between outer insulating layer and butt joint pipe is closed, and the connecting operation is completed, finally, the sealing plug is embedded to the operation hole, and the butt joint operation can be completed, and the operation of stripping the insulating layer is not needed, and the operation is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a low-voltage cable that is easy to connect. Background Technology

[0002] Cables can be classified into high-voltage cables and low-voltage cables according to voltage. Although low-voltage cable lines are more expensive and more difficult to lay and maintain compared to low-voltage overhead lines and low-voltage insulated overhead lines, they are widely used in low-voltage power distribution systems because of their reliable operation, no need for poles, no land occupation, no obstruction of appearance, and less susceptibility to external influences.

[0003] However, low-voltage cables on the market inevitably require splicing during installation or need to be cut and reconnected when damaged. Cable splicing usually involves stripping the insulation layer to expose the conductors before splicing and wrapping with insulating tape. However, stripping the insulation layer is laborious and time-consuming, resulting in low cable splicing efficiency. Utility Model Content

[0004] This invention provides a low-voltage cable that is easy to connect, which can effectively solve the problems mentioned in the background art, such as the laborious and time-consuming operation of stripping the insulation layer and the low efficiency of cable connection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-voltage cable that is easy to connect, comprising an inner conductor, an outer insulation layer wrapped around the outer side of the inner conductor, a connecting assembly installed at the end of the outer insulation layer, and the connecting assembly comprising a connecting pipe;

[0006] The two opposite ends of the outer insulation layer are respectively connected to the two ends of the connecting pipe. A baffle is welded to the connecting pipe near the outer insulation layer. An internal toothed ring is fixedly embedded on the inner side of the connecting pipe near the outer insulation layer. An internal threaded tube is welded through the opposite surfaces of the two baffles. A stud is connected to the inside of the internal threaded tube by a thread.

[0007] According to the above technical solution, an expansion ring is bonded to the connecting pipe near the baffle, and the expansion ring and the outer insulation layer are in clearance fit.

[0008] According to the above technical solution, the outer threads of the two studs are turned in opposite directions, and the stud axis coincides with the inner conductor axis of the cable.

[0009] According to the above technical solution, a mating ring is welded to one end of the stud near the inner conductor of the cable, and a mating cone is welded to the middle of the mating ring. A movable groove is opened on the opposite surface of the two studs, and the two movable grooves are respectively slidably connected to the two ends of the rotating rod.

[0010] According to the above technical solution, the rotating rod is a hexagonal prism, and the moving groove fits into the rotating rod.

[0011] According to the above technical solution, an operating hole is provided in the middle of the connecting pipe, and a sealing plug is embedded inside the operating hole.

[0012] According to the above technical solution, a collar is sleeved on the outside of the inner conductor of the cable, a support rod is welded to the outside of the collar, and a flame-retardant filler layer is filled between the inner conductor and the outer insulation layer of the cable.

[0013] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use;

[0014] 1. Equipped with a docking assembly, the stud moves along the internal thread tube, and the docking ring and docking cone penetrate into the inner conductor of the cable, squeezing the inner conductor and expanding the diameter of the inner conductor end, which in turn expands the outer diameter of the outer insulation layer end. The outer insulation layer squeezes the inner toothed ring and seals the gap between the outer insulation layer and the docking tube, completing the connection operation. Finally, the sealing plug is inserted into the operating hole to complete the docking operation. There is no need to strip the insulation layer, making the operation simple, convenient, and fast.

[0015] The outer insulation layer expands, and the teeth on the inner side of the mating ring are inserted into the outer insulation layer for fixation. The expansion ring absorbs water and expands to prevent water from seeping in, resulting in a tight connection. The mating pipe, baffle, and internal threaded pipe are all made of non-conductive fiberglass, while the stud and rotating rod are made of copper, which has good conductivity, ensuring good conductivity while maintaining insulation.

[0016] 2. The presence of the collar and support rod not only supports the cable but also ensures that the inner conductor of the cable is in the center position, preventing cable deviation and assisting the docking components to perform cable docking operations better and more accurately. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] In the attached diagram:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the docking assembly of this utility model;

[0021] Figure 3 This is a schematic diagram of the installation structure of the docking cone of this utility model;

[0022] Figure 4 This is a schematic diagram of the installation structure of the support rod of this utility model;

[0023] Labels in the diagram: 1. Inner conductor of the cable; 2. Outer insulation layer;

[0024] 3. Connecting components; 301. Connecting tube; 302. Baffle; 303. Internal gear ring; 304. Expansion ring; 305. Internally threaded tube; 306. Stud; 307. Connecting ring; 308. Connecting cone; 309. Moving groove; 310. Rotating rod; 311. Operating hole; 312. Sealing plug;

[0025] 4. Collar; 5. Support rod; 6. Flame-retardant filler layer. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] Example: Figure 1-4 As shown, this utility model provides a low-voltage cable technical solution that facilitates connection, including an inner conductor 1, an outer insulation layer 2 wrapped around the inner conductor 1, and a connection assembly 3 installed at the end of the outer insulation layer 2. The connection assembly 3 includes a connection tube 301, a baffle 302, an inner toothed ring 303, an expansion rubber ring 304, an internal threaded tube 305, a stud 306, a connection ring 307, a connection cone 308, a moving groove 309, a rotating rod 310, an operating hole 311, and a sealing plug 312.

[0028] The opposite ends of the two outer insulating layers 2 are respectively connected to the two ends of the connecting pipe 301. A baffle 302 is welded to the connecting pipe 301 near the outer insulating layer 2. An internal gear ring 303 is fixedly embedded on the inner side of the connecting pipe 301 near the outer insulating layer 2. An expansion rubber ring 304 is bonded to the connecting pipe 301 near the baffle 302. The expansion rubber ring 304 and the outer insulating layer 2 are in clearance fit to facilitate the expansion rubber ring 304 to seal the gap at the connection and prevent water leakage. An internally threaded tube 305 is welded through the opposite surfaces of the two baffles 302. A stud 306 is connected to the inside of the internally threaded tube 305 by a thread. The outer threads of the two studs 306 are turned in opposite directions. The axis of the studs 306 is... The two studs 306 are aligned with the axis of the inner conductor 1 of the cable, which facilitates the opposite movement of the two studs 306. A mating ring 307 is welded to one end of the stud 306 near the inner conductor 1 of the cable. A mating cone 308 is welded to the middle of the mating ring 307. Each of the two studs 306 has a moving groove 309 on its opposite surface. The two moving grooves 309 are slidably connected to the two ends of the rotating rod 310. The rotating rod 310 is a hexagonal prism. The moving grooves 309 fit the rotating rod 310, which facilitates the sliding of the rotating rod 310 in the moving grooves 309. An operating hole 311 is opened in the middle of the connecting pipe 301. A sealing plug 312 is embedded in the operating hole 311, which facilitates the operation of a wrench through the operating hole 311.

[0029] A collar 4 is sleeved on the outside of the inner conductor 1 of the cable, and a support rod 5 is welded on the outside of the collar 4. A flame-retardant filler layer 6 is filled between the inner conductor 1 and the outer insulation layer 2 of the cable.

[0030] The working principle and usage process of this utility model are as follows: When it is necessary to connect cables, cut one end of the cable with a hacksaw, cut off the damaged and uneven ends, and if necessary, grind the ends to expose the inner conductor 1 of the cable. Pick up the two ends that need to be connected, determine the connection position, and complete the preparation operation for connection.

[0031] Place the connector 301 between the two mating ends and insert the outer insulation layer 2 into the end of the connector 301. Because the inner diameter of the connector 301 is relatively large, it facilitates the insertion of the cable end. Continue until the end of the outer insulation layer 2 is pressed against and contacts the baffle 302. Pass the wrench through the operating hole 311 until it engages with the middle of the hexagonal rotating rod 310. Rotate the wrench; it will move from one end of the operating hole 311 to the other. Remove the wrench, adjust its position, and pass it through the operating hole 311 again. Repeat the above steps so that the rotating rod 310 drives the stud 306 to rotate continuously. During this process, the stud 306 moves along the internal thread tube 305, and the mating ring 307 and the mating cone 308 penetrate into the inner conductor 1 of the cable, squeezing the inner conductor 1 and causing the end diameter of the inner conductor 1 to expand, which in turn causes the outer diameter of the end of the outer insulation layer 2 to expand. The outer insulation layer 2 will squeeze the inner toothed ring 303 and seal the gap between the outer insulation layer 2 and the mating tube 301, completing the connection operation. Finally, the sealing plug 312 is inserted into the operating hole 311 to complete the docking operation. There is no need to remove the insulation layer. The operation is simple and convenient, and the docking operation is fast.

[0032] The outer insulation layer 2 expands, and the teeth on the inner side of the mating ring 307 are inserted into the outer insulation layer 2 for fixation. The expansion ring 304 absorbs water and expands to prevent water from seeping in, resulting in a tight connection. The mating pipe 301, baffle 302 and internal threaded pipe 305 are all made of non-conductive fiberglass, while the stud 306 and rotating rod 310 are made of copper, which has a good conductivity, ensuring good conductivity while maintaining insulation.

[0033] The collar 4 and support rod 5 not only support the cable but also ensure that the inner conductor 1 of the cable is in the center of the cable, preventing the cable from shifting and assisting the docking assembly 3 in performing cable docking operations better and more accurately.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A low-voltage cable that is easy to connect, comprising an inner conductor (1), wherein the inner conductor (1) is wrapped with an outer insulation layer (2), characterized in that: The outer insulation layer (2) is provided with a docking assembly (3) at its end, the docking assembly (3) including a docking tube (301); The two outer insulating layers (2) are respectively connected to the two ends of the connecting tube (301). A baffle (302) is welded to the connecting tube (301) near the outer insulating layer (2). An internal gear ring (303) is fixedly embedded on the inner side of the connecting tube (301) near the outer insulating layer (2). An internal threaded tube (305) is welded through the two baffles (302) on their opposite sides. A stud (306) is connected to the inside of the internal threaded tube (305) by a thread.

2. The low-voltage cable for easy connection according to claim 1, characterized in that, An expansion ring (304) is bonded to the connecting pipe (301) near the baffle (302), and the expansion ring (304) and the outer insulation layer (2) are in clearance fit.

3. The low-voltage cable for easy connection according to claim 1, characterized in that, The two studs (306) have opposite outer threads, and the axis of the studs (306) coincides with the axis of the inner conductor (1) of the cable.

4. A low-voltage cable for easy connection according to claim 1, characterized in that, The stud (306) has a butt ring (307) welded to one end near the inner conductor (1) of the cable. The butt ring (307) has a butt cone (308) welded to the middle. The two studs (306) have moving grooves (309) on their opposite sides. The two moving grooves (309) are slidably connected to the two ends of the rotating rod (310).

5. A low-voltage cable for easy connection according to claim 4, characterized in that, The rotating rod (310) is a hexagonal prism, and the moving groove (309) fits into the rotating rod (310).

6. A low-voltage cable for easy connection according to claim 4, characterized in that, An operating hole (311) is provided in the middle of the connecting pipe (301), and a sealing plug (312) is embedded inside the operating hole (311).

7. A low-voltage cable for easy connection according to claim 1, characterized in that, A collar (4) is sleeved on the outside of the inner conductor (1) of the cable, and a support rod (5) is welded on the outside of the collar (4). A flame-retardant filler layer (6) is filled between the inner conductor (1) and the outer insulation layer (2) of the cable.

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