A bundled cable

Abstract

The utility model discloses a kind of cluster cables, including main cable, the right end of the main cable is equipped with main connector, the left of the main cable extends and has multiple branch cables, the left end of each branch cable is equipped with branch connector, it is characterized by: the left end of the main cable and the branch cable between still be equipped with protective structure;The protective structure includes fixture, sheath and waterproof component, the fixture is set on the left end of the main cable, the fixture is equipped with the threading hole matching the number of branch cable, the left end of each branch cable is set outside the left end of the fixture by passing one threading hole, the waterproof component is set at the junction of the fixture and the branch cable;One end of the sheath is sleeved on the outside of the main cable, the other end of the sheath is sleeved on the outside of the fixture.The utility model improves the waterproof effect of cluster cable, also guarantees the security and service life of use.

Description

Technical Field

[0001] This utility model relates to a cable, and more particularly to a bundled cable. Background Technology

[0002] Bundled cables (also known as bundled conductors or bundled overhead insulated cables) are a new type of cable that uses insulating material connecting ribs to tightly bundle multiple insulated cables together. For crimp-type or crimp-like bundled cable assemblies, such as cables connecting antennas and RRUs, it includes a main cable and multiple branch cables at one end of the main cable. One side of each branch cable is covered by an outer sheath to form the main cable, while the branch cables on the other side of the sheath are individually installed. A first connector is installed at one end of the main cable, and each branch cable at the other end of the main cable also has a connector. In this structure, to prevent the outer sheath of the main cable from tearing due to tension during use or other operations, a plastic clamp with holes adapted to the number of branch cables is used. Each cable end is inserted into a hole in the clamp before a separate connector is installed. However, this structure has the following drawbacks:

[0003] 1. At the connection between the clamp and the main cable, electrical tape or a rubber sleeve is used to directly cover it to prevent the clamp from moving away from the main cable. However, this method is not strong enough, and the clamp can still easily move away from the main cable. This results in the branch cable connector and connection being subjected to great stress, which can easily lead to damage and affect the safety of use.

[0004] 2. The clamp is made of plastic, and there will be gaps at the holes and branch cable connections. Rainwater can easily enter the main cable through these gaps, which may cause rainwater to enter the connector at the end of the main cable. This results in poor waterproof performance and poses a significant safety hazard. Summary of the Invention

[0005] The purpose of this invention is to provide a bundled cable that effectively improves the waterproof performance and safety of the bundled cable.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a bundled cable, including a main cable, a main connector at the right end of the main cable, multiple branch cables extending from the left end of the main cable, a branch connector at the left end of each branch cable, and a protective structure between the left end of the main cable and the branch cable.

[0007] The protective structure includes a clamp, a sheath, and a waterproof component. The clamp is located at the left end of the main cable. The clamp has a number of through holes matching the number of branch cables. The left end of each branch cable passes through one of the through holes and is located outside the left end of the clamp. The waterproof component is located at the connection between the clamp and the branch cable.

[0008] One end of the sheath is fitted over the outside of the main cable, and the other end of the sheath is fitted over the outside of the clamp.

[0009] In the above technical solution, a heat shrink tubing is also provided. The heat shrink tubing is disposed inside the sheath, with the middle part of the heat shrink tubing sleeved outside the contact point between the clamp and the main cable. The right end of the heat shrink tubing is sleeved outside the main cable, and the left end of the heat shrink tubing is sleeved outside the right end of the clamp. The left end of the sheath is located to the left of the heat shrink tubing, and the right end of the sheath is located to the right of the heat shrink tubing.

[0010] In the above technical solution, the left end of the heat shrink tubing is tightly fitted with the outer surface of the clamp, and the right end of the heat shrink tubing is tightly fitted with the outer surface of the main cable.

[0011] And / or, the outer surface of the heat shrink tubing fits tightly against the inner surface of the sheath.

[0012] In the above technical solution, the clamp includes a main body, and a receiving cavity coaxially disposed at the right end of the main body. A central rod is provided at the center of the receiving cavity, and the right end of the central rod extends out of the receiving cavity and is disposed outside the right end of the receiving cavity.

[0013] The right end of the threading hole is connected to the accommodating cavity, and the left end of the threading hole is connected to the left side wall of the main body.

[0014] In the above technical solution, the right end of the central rod abuts against the left end face of the main cable, the waterproof component is disposed in the accommodating cavity, and the waterproof component fills the gap between adjacent branch cables and between the branch cables and the accommodating cavity.

[0015] In the above technical solution, the waterproof component is a rubber waterproof component, which has a clearance hole facing the wire hole. Each branch cable passes through a clearance hole, and the branch cable is tightly fitted with the clearance hole. The outer surface of the rubber waterproof component is tightly fitted with the receiving cavity.

[0016] Alternatively, the waterproof component is a waterproof sealant, which is injected into the receiving cavity and contacts the branch cable, the center rod, and the receiving cavity; and / or, the waterproof sealant is also injected into the gap between the wire hole and the branch cable.

[0017] In the above technical solution, the waterproof component is a waterproof sealant, which is placed between the branch cable and the through hole and fills the gap between the branch cable and the through hole.

[0018] In the above technical solution, an annular protrusion is provided on the outer surface of the clamp, an annular groove is provided on the left inner surface of the sheath, the annular protrusion is disposed in the annular groove, and the left side wall of the annular protrusion abuts against the left side surface of the annular groove.

[0019] In the above technical solution, the sheath is a plastic sheath, the main cable is tightly fitted to the inner surface of the sheath, and the left inner wall of the sheath is tightly fitted to the right outer surface of the clamp.

[0020] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0021] 1. In this utility model, a sheath is set to cover the outside of the main cable and the clamp to limit the clamp and prevent it from moving relative to the main cable, so as to ensure the strength, firmness and service life of the bundled cable and reduce safety hazards. At the same time, a waterproof component is also set to seal the connection between the branch cable and the clamp, which effectively improves the waterproof performance and improves the safety of the bundled cable.

[0022] 2. This utility model also includes heat shrink tubing to seal the connection between the clamp and the main cable. The combination of heat shrink tubing and waterproof components further improves waterproof performance and enhances safety in use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure in Embodiment 1 of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure in Embodiment 1 of this utility model (in partial cross-sectional view);

[0025] Figure 3 yes Figure 2 Enlarged view of a section of the central protective structure;

[0026] Figure 4 This is a schematic diagram of the fixture in Embodiment 1 of this utility model.

[0027] The components include: 1. Main cable; 2. Main connector; 3. Branch cable; 4. Branch connector; 5. Clamp; 6. Sheath; 7. Waterproof component; 8. Cable hole; 9. Heat shrink tubing; 10. Body; 11. Receiving cavity; 12. Center rod; 13. Annular protrusion; 14. Annular groove. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0029] Example 1: See Figure 1-4As shown, a bundled cable includes a main cable 1, a main connector 2 at the right end of the main cable 1, and multiple branch cables 3 extending from the left side of the main cable 1. Each branch cable 3 has a branch connector 4 at its left end, and a protective structure is provided between the left end of the main cable 1 and the branch cable 3.

[0030] The protective structure includes a clamp 5, a sheath 6, and a waterproof component 7. The clamp 5 is located at the left end of the main cable 1. The clamp 5 has a number of through holes 8 matching the number of branch cables 3. The left end of each branch cable 3 passes through one of the through holes 8 and is located outside the left end of the clamp 5. The waterproof component 7 is located at the connection between the clamp 5 and the branch cable 3.

[0031] One end of the sheath 6 is fitted over the outside of the main cable 1, and the other end of the sheath 6 is fitted over the outside of the clamp 5.

[0032] In this embodiment, the main connector is used to connect to a device or corresponding mechanism, and each branch connector is used to connect to a device or corresponding mechanism, thereby electrically connecting multiple devices or mechanisms to a single device or mechanism. Taking the illustrated direction as an example, the right ends of multiple branch cables are covered with an outer sheath, forming the main cable. The clamp is located on the left side of the outer sheath. The right ends of the multiple branch cables inside the outer sheath are connected to the main connector. A branch connector is installed on the left end of each branch cable located outside the left end of the outer sheath. Furthermore, an injection-molded part is also wrapped around the left end of the main connector and the right end of the outer sheath to protect the outer sheath and secure the connector, the outer sheath, and the branch cables inside the outer sheath. To protect the left end of the main cable and prevent branch cables located outside the left end from tearing the outer sheath during use, a clamp with a wire-passing hole is installed. The left end of each cable passes through one of these holes and rests outside the left end of the clamp. A branch connector is installed at the left end of each branch cable. The clamp protects the left end of the main cable from tearing its outer sheath and also limits the branch cable's movement, preventing it from shifting or separating from the main connector during use. To further limit the clamp's movement relative to the main cable, a sheath is used. The middle of the sheath covers the connection between the clamp and the main cable, while the two ends cover the right end of the clamp and the left end of the main cable, respectively, thus limiting the clamp's movement. In addition to limiting movement, the sheath also protects the left end of the main cable and the right end of the clamp, and provides a waterproof seal between the clamp and the main cable.

[0033] In order to improve the waterproof effect and prevent rainwater from entering the main cable from between the cable hole and the branch cable (the connection between the right end of the branch cable and the main connector), a waterproof component is also provided. The waterproof component is located at the connection between the clamp and the branch cable to block the connection and play an effective waterproof role. The sheath can prevent rainwater from entering from the connection between the clamp and the main cable. The double waterproofing effectively improves the waterproof effect.

[0034] More preferably, to further enhance the protective effect, the sheath 6 is a plastic sheath, with the main cable 1 tightly fitted to the inner surface of the sheath 6, and the left inner wall of the sheath 6 tightly fitted to the right outer surface of the clamp 5. Using a plastic sheath, after the clamp and waterproof components are installed, the bundled cable is placed into a mold for injection molding. The sheath is fixed to the main cable and clamp by injection molding. In this structure, the post-injection molding method ensures the strength and sealing effect at the connection between the sheath and the main cable / clamp, guaranteeing the waterproof effect.

[0035] See Figure 2 , 3 As shown, a heat shrink tubing 9 is also provided. The heat shrink tubing 9 is disposed inside the sheath 6. The middle part of the heat shrink tubing 9 is sleeved outside the contact point between the clamp 5 and the main cable 1. The right end of the heat shrink tubing 9 is sleeved outside the main cable 1. The left end of the heat shrink tubing 9 is sleeved outside the right end of the clamp 5. The left end of the sheath 6 is located to the left of the heat shrink tubing 9, and the right end of the sheath 6 is located to the right of the heat shrink tubing 9.

[0036] The use of heat shrink tubing further seals the gaps at the connection or contact points between the clamps and the main cable, preventing water leakage. Simultaneously, when the bundled cable is placed into the mold for sheath injection molding, the heat shrink tubing also limits the clamp's position, preventing it from shifting relative to the main cable. This ensures the clamp's position relative to the main cable remains unchanged during sheath injection molding, guaranteeing the quality of the bundled cable. Before manufacturing the bundled cable, clamps and waterproof components are installed, followed by the application of heat shrink tubing. After installation, hot air is used to shrink the heat shrink tubing, ensuring it tightly covers the clamps and main cable. Finally, the cable is placed into the mold for sheath injection molding. Furthermore, the left end of the sheath is on the left side of the heat shrink tubing, and the right end is on the right side, with the heat shrink tubing completely inside the sheath. This dual protection between the clamps and the main cable through the heat shrink tubing and the sheath enhances the waterproof effect.

[0037] See Figure 2 , 3 As shown, the left end of the heat shrink tubing 9 is tightly fitted to the outer surface of the clamp 5, and the right end of the heat shrink tubing 9 is tightly fitted to the outer surface of the main cable 1.

[0038] The outer surface of the heat shrink tubing 9 fits tightly with the inner surface of the sheath 6.

[0039] This method ensures waterproofing, prevents the clamps from moving relative to the main cable, and guarantees the clamps' secure installation.

[0040] See Figure 3 , 4 As shown, the clamp 5 includes a main body 10. The right end of the main body 10 is provided with a receiving cavity 11 coaxially arranged with the main body 10. A central rod 12 is provided at the center of the receiving cavity 11. The left end of the central rod 12 is connected to the left side wall of the receiving cavity 11, and the right end of the central rod 12 extends out of the receiving cavity 11 and is located outside the right end of the receiving cavity 11.

[0041] The right end of the threading hole 8 is connected to the accommodating cavity 11, and the left end of the threading hole 8 is connected to the left side wall of the main body 10.

[0042] The right end of the central rod 12 abuts against the left end face of the main cable 1. The waterproof component 7 is disposed in the accommodating cavity 11 and fills the gap between adjacent branch cables 3 and between the branch cables 3 and the accommodating cavity 11.

[0043] In this embodiment, the central rod is used to position the clamp, thereby ensuring the distance between the right end of the clamp and the main cable, and maintaining a certain gap between the threaded hole and the main cable, so that the branch cable will not affect the main cable during bending. Simultaneously, the accommodating cavity is used to house the waterproof component. The waterproof component is filled into the accommodating cavity, and also into the gaps between adjacent branch cables and between the branch cable and the accommodating cavity. This way, even if water enters through the gap between the threaded hole and the branch cable, it will be blocked by the waterproof component, thus ensuring a waterproof effect.

[0044] In this invention, the waterproof component has several structures. The first type is a rubber waterproof component with a clearance hole facing the through-hole. Each branch cable passes through one clearance hole, and the branch cable is tightly fitted with the clearance hole. The outer surface of the rubber waterproof component is tightly fitted with the receiving cavity. In this structure, because the waterproof component is made of rubber, it has strong elastic deformation capability. Therefore, the diameter of the clearance hole is smaller than the diameter of the branch cable, thus achieving a tight fit between the rubber waterproof component and the branch cable. Simultaneously, the outer diameter of the rubber waterproof component is larger than the diameter of the receiving cavity. When the rubber waterproof component is inserted into the receiving cavity, it is compressed, thereby blocking and compressing the connection between the clearance hole and the branch cable, and also blocking the space between the receiving cavity and the rubber waterproof component, thus ensuring a sealing and waterproof effect. A hole facing the center rod is provided on the rubber waterproof component, allowing the center rod to pass through and clearance.

[0045] The second method involves using waterproof sealant as the waterproof component. This sealant is injected into the receiving cavity and contacts the branch cable, center rod, and the receiving cavity. In this method, waterproof sealant is used for sealing. During the assembly of the bundled cables, after the clamps are installed, the waterproof sealant is first injected into the receiving cavity, filling all the pores. After the sealant has cured, the heat shrink tubing is installed, and finally, the sheath is injection molded. This embodiment uses the second structure.

[0046] Furthermore, during the application of the waterproof sealant, it can also be injected into the gap between the threaded hole and the branch cable. This further fills the gap between the threaded hole and the branch cable, further improving the waterproof effect.

[0047] In another preferred embodiment, the waterproof component is a waterproof sealant, which is placed between the branch cable and the through hole to fill the gap between them. In this structure, the waterproof sealant injected into the gap between the through hole and the branch cable serves to waterproof the left end of the clamp, while the clamp and the main cable are sealed and waterproofed by heat shrink tubing and a sheath.

[0048] See Figure 3 , 4 As shown, the outer surface of the clamp 5 is provided with an annular protrusion 13, and the inner left side surface of the sheath 6 is provided with an annular groove 14. The annular protrusion 13 is disposed in the annular groove 14, and the left side wall of the annular protrusion 13 abuts against the left side surface of the annular groove 14.

[0049] In this embodiment, since the rightward movement of the clamp is limited by the center rod and the main cable, the clamp can only move to the left away from the main cable. To further improve the clamp's limiting effect, an annular protrusion is provided, and an annular groove is provided on the inner surface of the sheath. The annular groove and annular protrusion restrict the leftward movement of the clamp, thereby ensuring the clamp's secure installation. For the clamp to move to the left away from the main cable, it must simultaneously pull the sheath to the left to detach from the main cable. Since the sheath is directly injection-molded onto the outside of the main cable, its tensile strength is high, resulting in good clamp installation strength.

[0050] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of the invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. For instance, the two components can be mechanically connected by contact or abutting; they can also be directly hooked or connected by an intermediate medium; or they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A bundled cable, comprising a main cable, a main connector at the right end of the main cable, and multiple branch cables extending from the left end of the main cable, each of the branch cables having a branch connector at its left end, characterized in that: A protective structure is also provided between the left end of the main cable and the branch cable; The protective structure includes a clamp, a sheath, and a waterproof component. The clamp is located at the left end of the main cable. The clamp has a number of through holes matching the number of branch cables. The left end of each branch cable passes through one of the through holes and is located outside the left end of the clamp. The waterproof component is located at the connection between the clamp and the branch cable. One end of the sheath is fitted over the outside of the main cable, and the other end of the sheath is fitted over the outside of the clamp.

2. The bundled cable of claim 1, wherein: The device also includes a heat shrink tubing, which is disposed inside the sheath. The middle part of the heat shrink tubing is fitted over the outside of the contact point between the clamp and the main cable. The right end of the heat shrink tubing is fitted over the outside of the main cable. The left end of the heat shrink tubing is fitted over the outside of the right end of the clamp. The left end of the sheath is located to the left of the heat shrink tubing, and the right end of the sheath is located to the right of the heat shrink tubing.

3. The bundled cable of claim 2, wherein: The left end of the heat shrink tubing is tightly fitted to the outer surface of the clamp, and the right end of the heat shrink tubing is tightly fitted to the outer surface of the main cable. And / or, the outer surface of the heat shrink tubing fits tightly against the inner surface of the sheath.

4. The bundled cable of claim 1, wherein: The clamp includes a main body, and a receiving cavity coaxially arranged with the right end of the main body. A central rod is provided at the center of the receiving cavity, and the right end of the central rod extends out of the receiving cavity and is located outside the right end of the receiving cavity. The right end of the threading hole is connected to the accommodating cavity, and the left end of the threading hole is connected to the left side wall of the main body.

5. The bundled cable of claim 4, wherein: The right end of the central rod abuts against the left end face of the main cable. The waterproof component is disposed in the accommodating cavity and fills the gaps between adjacent branch cables and between the branch cables and the accommodating cavity.

6. The bundled cable of claim 5, wherein: The waterproof component is a rubber waterproof component, which has a clearance hole facing the wire hole. Each branch cable passes through one clearance hole, and the branch cable is tightly fitted with the clearance hole. The outer surface of the rubber waterproof component is tightly fitted with the receiving cavity. Alternatively, the waterproof component is a waterproof sealant, which is injected into the receiving cavity and contacts the branch cable, the center rod, and the receiving cavity; and / or, the waterproof sealant is also injected into the gap between the wire hole and the branch cable.

7. The bundled cable of claim 1, wherein: The waterproof component is a waterproof sealant, which is placed between the branch cable and the through hole to fill the gap between the branch cable and the through hole.

8. The bundled cable of claim 1, wherein: The outer surface of the clamp is provided with an annular protrusion, the inner left side surface of the sheath is provided with an annular groove, the annular protrusion is disposed in the annular groove, and the left side wall of the annular protrusion abuts against the left side surface of the annular groove.

9. The bundled cable of claim 1, wherein: The sheath is a plastic sheath, and the main cable is tightly fitted to the inner surface of the sheath. The left inner wall of the sheath is tightly fitted to the right outer surface of the clamp.

Images