Waterproof insulating branch cable

Abstract

The utility model discloses a waterproof insulating branch cable, which comprises a main cable and a branch cable, a main cable core wire in the middle of the main cable is connected with a branch cable core wire of the branch cable through a C-shaped clamp, and the main cable, the branch cable and the C-shaped clamp are jointly coated with an insulating sheath made of rubber; waterproof assemblies are arranged at the parts, close to the outer side of the insulating sliding sleeve, of the main cable and the branch cable; each waterproof assembly comprises an outer sealing sheath and an inner sealing sheath which are arranged outside the corresponding main cable or branch cable in a sleeving manner; the outer sealing sheath comprises a connecting part and a screw-in part which are integrally arranged, and the outer peripheral wall of the connecting part is provided with an external thread and is in threaded connection with a straight hole formed in the insulating sheath. According to the utility model, the main cable and the branch cable are connected through the C-shaped clamp, and the insulation sliding sleeve made of the rubber material is arranged outside the connection part, so that the insulation performance of the whole branch cable can be effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of branch cables, in particular to a waterproof and insulated branch cable. Background Art

[0002] A branch cable refers to a cable used for branch connection in an electrical system, usually consisting of a main cable and at least one branch cable. The main cable provides the main transmission path for power lines or signal lines, while the branch cable separates from the main cable and is used for other electrical appliances or equipment. The main feature of the branch cable is that it can effectively manage and organize multiple branch cables, reduce the system construction cost, and improve the maintenance efficiency.

[0003] At the present stage, the branch cable is often simply wrapped with insulating tape. When the branch cable is in use, the insulation performance is low. During the external plastic pressing, the tape rolls, causing the conductor cores to come into contact and resulting in a short circuit. Moreover, the waterproof performance at the branch joint is poor, and the safety performance is low, unable to ensure the insulation and waterproof properties of the branch cable during use. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a waterproof and insulated branch cable to solve the technical problems mentioned in the above background art.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A waterproof and insulated branch cable of the utility model includes a main cable and a branch cable. The main cable core in the middle of the main cable and the branch cable core of the branch cable are connected by a C-shaped clamp. The main cable, the branch cable, and the outside of the C-shaped clamp are jointly covered with an insulating sheath made of rubber material. Waterproof components are arranged at the parts of the main cable and the branch cable close to the outside of the insulating sleeve. Each waterproof component includes an outer sealing sheath and an inner sealing sheath sleeved on the corresponding main cable or branch cable. The outer sealing sheath includes a connecting part and a screwing-in part integrally arranged. An external thread is provided on the outer peripheral wall of the connecting part and is threadedly connected with a straight hole opened on the insulating sheath. The screwing-in part is located at the outer end of the connecting part. The inner sealing sheath includes a sliding part arranged between the connecting part and the inner end of the straight hole. The outer periphery of the sliding part is slidably matched with the straight hole. A tapered part is arranged at one end of the sliding part away from the connecting part. The tapered part has the same taper as the tapered hole opened at the inner end of the straight hole. A deformation sealing part with a cavity inside is arranged at one end of the tapered part away from the sliding part.

[0007] Further, a polyethylene filling layer is filled jointly outside the main cable core, the branch cable core, and the C-shaped clamp of the insulating sheath.

[0008] Furthermore, on the outside of the insulating sheath, limit convex rings are respectively arranged on the outer sides of the connection parts of the waterproof components, and a sealing washer is sleeved on the part of the connection part located between the screwing-in part and the limit convex ring.

[0009] Furthermore, the outer diameter of the limit convex ring is larger than that of the screwing-in part, and external threads are provided on the outer peripheral wall thereof. An encapsulation cap threadedly connected to the limit convex ring is commonly arranged on the outsides of the screwing-in part and the limit convex ring.

[0010] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0011] In the present utility model, the main cable and the branch cable are connected by a C-type clip, and an insulating sliding sleeve made of rubber is commonly arranged on the outside of the connection part, which can effectively ensure the insulation performance of the entire branch cable. In addition, the waterproof component of the present utility model squeezes and deforms the annular sealing part, so that the annular sealing part is in close contact with the outer wall of the corresponding main cable or branch cable and the inner wall of the tapered hole, thereby effectively sealing the connection part between the main cable or branch cable and the outside of the insulating sliding sleeve, improving the waterproof performance of the entire branch cable, avoiding the occurrence of short circuit due to water ingress at the connection part, and ensuring the safety performance. Description of the Drawings

[0012] The present utility model will be further described below with reference to the drawings.

[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is a schematic diagram of the structure of the waterproof component of the present utility model;

[0015] Description of the reference numerals: 1, main cable; 2, branch cable; 3, main cable core wire; 4, branch cable core wire; 5, C-type clip; 6, insulating sheath; 7, polyethylene filling layer; 8, outer sealing sheath; 8-1, connection part; 8-2, screwing-in part; 9, inner sealing sheath; 9-1, sliding part; 9-2, tapered part; 9-3, deformation sealing part; 10, straight hole; 11, tapered hole; 12, limit convex ring; 13, sealing washer; 14, encapsulation cap. Detailed Embodiments

[0016] As Figure 1 - Figure 2As shown in the figure, a waterproof and insulated branch cable includes a main cable 1 and a branch cable 2 connected to the main cable 1. Specifically: the main cable core wire 3 in the middle of the main cable 1 and the branch cable core wire 4 at the end of the branch cable 2 are connected by a C-type clamp 5. The main cable 1, the branch cable 2, and the outside of the C-type clamp 5 are jointly coated with an insulating sheath 6 made of rubber material. In addition, a polyethylene filling layer 7 is filled jointly outside the main cable core wire 3, the branch cable core wire 4, and the C-type clamp 5 in the insulating sheath 6.

[0017] Waterproof components are provided at the parts of the main cable 1 and the branch cable 2 close to the outer side of the insulating sleeve. Specifically: each waterproof component includes an outer sealing sheath 8 and an inner sealing sheath 9 sleeved on the corresponding main cable 1 or branch cable 2. The outer sealing sheath 8 includes a connecting part 8-1 and a screwing-in part 8-2 integrally provided. An external thread is provided on the outer peripheral wall of the connecting part 8-1 and is threadedly connected to a straight hole 10 provided on the insulating sheath 6. The screwing-in part 8-2 is located at the outer end of the connecting part 8-1. The inner sealing sheath 9 includes a sliding part 9-1 provided between the connecting part 8-1 and the inner end of the straight hole 10. The outer periphery of the sliding part 9-1 is slidably matched with the straight hole 10. A tapered part 9-2 is provided at one end of the sliding part 9-1 away from the connecting part 8-1. The outer periphery of the tapered part 9-2 has the same taper as a tapered hole 11 provided at the inner end of the straight hole 10. A deformation sealing part 9-3 with a cavity inside is provided at one end of the tapered part 9-2 away from the sliding part 9-1.

[0018] Limit convex rings 12 are respectively provided on the outside of the insulating sheath 6 at the outside of the connecting part 8-1 of each waterproof component. A sealing washer 13 is sleeved on the part of the connecting part 8-1 between the screwing-in part 8-2 and the limit convex ring 12. In addition, in this embodiment, the outer diameter of the limit convex ring 12 is larger than the outer diameter of the screwing-in part 8-2 and an external thread is provided on its outer peripheral wall. An encapsulation cap 14 threadedly connected to the limit convex ring 12 is jointly installed on the outside of the screwing-in part 8-2 and the limit convex ring 12.

[0019] The utility model connects the main cable and the branch cable through a C-type clamp, and an insulating sliding sleeve made of rubber material is commonly arranged outside the connecting part, which can effectively ensure the insulation performance of the whole branch cable. In addition, waterproof components are arranged at the positions of the main cable and the branch cable close to the outer side of the insulating sliding sleeve. Since the connecting part of the outer sealing sheath is threadedly connected with the straight hole of the insulating sheath, the connecting part is moved towards the inner end of the straight hole by screwing the screwing part. During the process of the connecting part moving towards the inner end of the straight hole, the sliding part of the inner sealing sheath is extruded, so that the conical part and the deformation sealing part move towards the inner end of the conical hole. Since the inner wall of the conical hole gradually narrows, the annular sealing part is extruded and deformed, so that the annular sealing part is in close contact with the outer wall of the corresponding main cable or branch cable and the inner wall of the conical hole, thereby effectively sealing the outer connecting part of the main cable or branch cable and the insulating sliding sleeve, improving the waterproof performance of the whole branch cable, avoiding the occurrence of short circuit due to water ingress at the connecting part, and ensuring the safety performance.

[0020] The embodiments described above are only descriptions of the preferred modes of the utility model, and do not limit the scope of the utility model. Without departing from the design spirit of the utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A waterproof insulated branch cable, characterized in that: It comprises a main cable and a branch cable, wherein the main cable core wire in the middle of the main cable and the branch cable core wire of the branch cable are connected by a C-type clamp, and the main cable, the branch cable and the C-type clamp are covered with an insulating sheath made of rubber material on the outside together; the main cable and the branch cable are provided with waterproof components at their locations close to the outside of the insulating sleeve; each of the waterproof components comprises an outer sealing sheath and an inner sealing sheath sleeved on the outside of the corresponding main cable or branch cable; the outer sealing sheath comprises an integrally arranged connecting portion and a screw-in portion, an outer thread is provided on the outer peripheral wall of the connecting portion and is threadedly connected to a straight hole provided on the insulating sheath, and the screw-in portion is located at the outer end of the connecting portion; the inner sealing sheath comprises a sliding portion provided between the connecting portion and the inner end of the straight hole, the outer periphery of the sliding portion is slidably matched with the straight hole, a tapered portion is provided at one end of the sliding portion away from the connecting portion, the tapered portion has the same taper as the tapered hole provided at the inner end of the straight hole, and a deformation sealing portion having a cavity inside is provided at one end of the tapered portion away from the sliding portion.

2. The waterproof insulated branch cable according to claim 1, characterized in that: The insulating sheath is commonly filled with a polyethylene filling layer outside the main cable core wire, the branch cable core wire and the C-type clamp.

3. The waterproof insulated branch cable according to claim 1, characterized in that: The outside of the insulating sheath is provided with a limiting convex ring on the outside of the connection part of each waterproof component, and the connection part is sleeved with a sealing gasket at a position between the screw-in part and the limiting convex ring.

4. The waterproof insulated branch cable according to claim 3, characterized in that: The outer diameter of the limiting convex ring is greater than the outer diameter of the screw-in portion and an outer peripheral wall thereof is provided with an external thread. The screw-in portion and the outside of the limiting convex ring are commonly provided with a packaging cap threadably connected to the limiting convex ring.

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