A multi-core parallel cable
By setting a reinforcing layer and anti-compression ribs on the outer layer of the multi-core parallel cable, combined with the design of insulation and shielding layers, the problems of insufficient cable compressive strength and insufficient ground wire protection are solved, thereby improving the structural stability and safety of the cable.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DINGDA WIRE & CABLE TECH
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-26
AI Technical Summary
Existing multi-core parallel cables have poor compressive strength, are prone to cracking at weak joints, and lack external protection for the ground wire, which can easily lead to electric shock hazards.
Reinforcing layers are installed at both the top and bottom of the outer layer of the cable, anti-compression ribs are laid inside, and insulation and shielding layers are filled inside. The outer layer is wrapped with a ground wire protection layer, and polyvinyl chloride and rubber materials are used to enhance the structural stability.
It improves the cable's compressive strength, prevents insulation layer cracking, enhances ground wire protection, reduces leakage risk, and improves the overall structural stability and safety of the cable.
Smart Images
Figure CN224287829U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable technology, specifically to a multi-core parallel cable. Background Technology
[0002] Cables play a vital role in electronic products and systems, serving as a crucial link connecting various functions. They are widely used in aerospace, naval warfare, and other fields, existing in diverse environments. Therefore, the stability of cable performance is the primary consideration in cable manufacturing and welding. This is mainly because imperfections in the manufacturing process, poor contact during welding, or low welding quality can have a significant impact on the entire electronic system. Substandard cable manufacturing and welding quality can threaten the operational safety of the entire system. Therefore, it is essential to strictly adhere to requirements during the manufacturing and welding process.
[0003] For example, the authorization announcement number "CN205911073U" describes a multi-core parallel cable. The main wire and ground wire are arranged at intervals to ensure the electrical safety of the insulated cores and avoid electrical faults caused by adjacent thin-insulated cores. Existing multi-core parallel cables use a figure-eight cable insulation to separate the two main power cable conductors and can also lay a ground wire in the empty slot in the middle of the figure-eight. However, this type of multi-core parallel cable has a defect. Because the multi-core parallel cable is shaped like an "8", the two ends are relatively thick, while the middle connection is slightly weaker. Therefore, the entire multi-core parallel cable has poorer compressive strength than conventional cylindrical cables. When a slight external force is applied to the weak connection in the middle, it is easy to cause the cable insulation layer to crack. Moreover, the inside of the weak middle position is exactly where the ground wire is located. The ground wire lacks external protection and it is difficult to conduct leakage current to the ground, which can easily cause electric shock hazards. Summary of the Invention
[0004] The purpose of this utility model is to solve the problem that existing multi-core parallel cables have poor compressive strength compared to conventional cylindrical cables. When a slight external force is applied to the weak connection in the middle, the cable insulation layer is easily cracked. Moreover, the ground wire is located on the inner side of the weak connection in the middle. The ground wire lacks outer protection, making it difficult to conduct leakage current to the ground, which can easily cause electric shock hazards. Therefore, a multi-core parallel cable is proposed.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] Design a multi-core parallel cable, including an outer cable layer, a first cable core, and a second cable core. The first cable core is fixedly sleeved on one side of the inner side of the outer cable layer, and the second cable core is fixedly sleeved on the other side of the inner side of the outer cable layer. Reinforcing layers are fixedly connected to the upper and lower ends of the outer cable layer. Multiple anti-compression ribs are fixedly connected inside the reinforcing layers, and the two reinforcing layers are arranged relatively parallel to each other.
[0007] This reinforcement layer is made of thickened rubber strips that are pasted on the top and bottom ends of the cable's outer layer. The internal shape of the reinforcement layer matches the shape of both sides of the cable's outer layer, while the outer side of the reinforcement layer has a gentler shape. Multiple vertical pressure-resistant ribs are vertically inserted into the inside of the reinforcement layer. These pressure-resistant ribs are made of polyvinyl chloride material. These multiple vertical pressure-resistant ribs can help the weaker parts in the middle of the cable's outer layer to have stronger pressure resistance and deformation resistance.
[0008] Preferably, an insulating layer is fixedly sleeved on the outer wall of the first cable core and the second cable core, a filling layer is fixedly sleeved on the outside of the insulating layer, and a shielding layer is fixedly wrapped on the outside of the filling layer.
[0009] The insulation layer is a cross-linked polyethylene material directly wrapped around the outside of the first and second cable cores. The insulation layer can reduce leakage current in the cable cores that are transmitting current. The filler layer is an insulating paper filler material that fills the gaps inside the cable and maintains the shape of the cable. The shielding layer is a spool made of tinned copper wire that is wrapped around the outside. The shielding layer can reduce the cable from external electromagnetic interference.
[0010] Preferably, a protective core is fixedly sleeved on the inner side of the outer layer of the cable, a ground wire protection layer is fixedly connected to the inner side of the protective core, and a ground wire cable is fixedly sleeved on the inner side of the ground wire protection layer.
[0011] This protective core uses paper filler material between the outer layer of the cable and the ground wire protective layer to strengthen the ground wire protective layer. The ground wire protective layer is fixedly connected to the inside of the protective core. The ground wire protective layer is made of thickened rubber material, which tightly wraps the ground wire cable inside the ground wire protective layer, making it less likely for the ground wire cable to have leakage problems.
[0012] Preferably, the outer wall of the grounding protection layer is fixedly fitted with an inner lining layer.
[0013] The inner lining of this device is made of PVC material, a common cable inner lining material with good flame retardant and mechanical properties.
[0014] Preferably, the two ends of the outer wall of the protective core are arranged opposite to the inner side of the reinforcing layer.
[0015] Preferably, the first cable core and the second cable core are arranged relatively parallel to each other, and the first cable core and the ground wire are arranged parallel to each other.
[0016] The multi-core parallel cable proposed in this utility model has the following advantages: the reinforcing layer is made of thickened rubber strips pasted on the upper and lower ends of the cable's outer layer. The internal shape of the reinforcing layer matches the shape of both sides of the cable's outer layer, while the outer side of the reinforcing layer has a gentler shape. Multiple vertical anti-compression ribs are vertically inserted into the interior of the reinforcing layer. These anti-compression ribs are made of polyvinyl chloride material. These multiple vertical anti-compression ribs can help the relatively weak middle part of the cable's outer layer to have stronger anti-compression and anti-deformation capabilities, thus protecting the integrity of the internal ground wire cable. The entire multi-core parallel cable structure is more robust and reasonable. The inner side of the weak middle part of the entire multi-core parallel cable is exactly where the ground wire is located, adding an extra protection mechanism. The ground wire can work more safely, reducing the occurrence of electric shock hazards. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 for Figure 1 A frontal sectional view;
[0019] Figure 3 for Figure 1 A schematic diagram of the top sectional view;
[0020] Figure 4 for Figure 2 Enlarged sectional view of section A in the middle;
[0021] Figure 5 for Figure 2 Enlarged sectional view of section B in the middle;
[0022] Figure 6 for Figure 3 Enlarged sectional view of section C.
[0023] In the diagram: 1. Outer layer of cable, 2. First cable core, 3. Second cable core, 4. Ground wire, 5. Filler layer, 6. Shielding layer, 7. Ground wire protection layer, 8. Inner lining layer, 9. Protective core, 10. Reinforcing layer, 11. Pressure-resistant rib, 12. Insulation layer. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings: Example
[0025] Please see Figure 1-6In this embodiment, a multi-core parallel cable includes an outer cable layer 1, a first cable core 2, and a second cable core 3. The first cable core 2 is fixedly sleeved on one side of the inner surface of the outer cable layer 1. The outer cable layer 1 is made of rubber material, which has good insulation properties and a certain degree of elasticity to adapt to the shape changes of the internal cable cores. The second cable core 3 is fixedly sleeved on the other side of the inner surface of the outer cable layer 1. The outer cable layer 1 is designed in a figure-eight shape, with two first cable cores 2 and two cable cores 3 passing through its relatively thick inner surfaces. The first cable cores 2 and 3 are the neutral and live wires of the parallel cable, distinguished by different colors. The upper and lower surfaces of the outer cable layer 1... Reinforcing layers 10 are fixedly connected at both ends. The reinforcing layers 10 are made of thickened rubber strips that are pasted to the upper and lower ends of the outer layer 1 of the cable. The internal shape of the reinforcing layers 10 matches the shape of both sides of the outer layer 1 of the cable. The outer side of the reinforcing layers 10 is flat. Multiple vertical pressure-resistant ribs 11 are vertically inserted inside the reinforcing layers 10. The pressure-resistant ribs 11 are made of polyvinyl chloride material. Multiple vertical pressure-resistant ribs 11 can help the relatively weak middle part of the outer layer 1 of the cable to have stronger pressure resistance and deformation resistance, thus protecting the integrity of the internal ground cable 4. The entire multi-core parallel cable structure is more robust and reasonable. Multiple pressure-resistant ribs 11 are fixedly connected inside the reinforcing layers 10, and the two reinforcing layers 10 are set relatively parallel.
[0026] An insulation layer 12 is fixedly sleeved on the outer wall of the first cable core 2 and the second cable core 3. The insulation layer 12 is a cross-linked polyethylene material directly wrapped around the outside of the first cable core 2 and the second cable core 3. The insulation layer 12 can reduce the leakage of the cable cores that transmit current. A filling layer 5 is fixedly sleeved on the outside of the insulation layer 12. The filling layer 5 is an insulating paper filler material that fills the gaps inside the cable and maintains the shape of the cable. The shielding layer 6 is fixedly wrapped on the outside of the filling layer 5. The shielding layer 6 is a spool made of tinned copper wire braided on the outside. The shielding layer 6 can reduce the cable from external electromagnetic interference.
[0027] A protective core 9 is fixedly sleeved on the inner side of the outer layer 1 of the cable. The protective core 9 is made of paper filler material that is filled between the outer layer 1 of the cable and the ground wire protection layer 7, which can strengthen the ground wire protection layer 7. The ground wire protection layer 7 is fixedly connected to the inner side of the protective core 9. The ground wire protection layer 7 is made of thickened rubber material, which tightly wraps the ground wire cable 4 inside the ground wire protection layer 7, making it less likely for the ground wire cable 4 to have leakage problems. The ground wire cable 4 is fixedly sleeved on the inner side of the ground wire protection layer 7.
[0028] The outer wall of the ground wire protection layer 7 is fixedly fitted with an inner lining layer 8. The inner lining layer 8 is made of PVC material, which is a common cable inner lining material with good flame retardant and mechanical properties. The two ends of the outer wall of the protective core 9 are arranged opposite to the inner side of the reinforcing layer 10. The first cable core 2 and the second cable core 3 are arranged relatively parallel to each other. The first cable core 2 and the ground wire cable 4 are arranged parallel to each other.
[0029] Working principle:
[0030] The outer layer 1 of the cable is made of rubber material. Rubber has excellent insulation properties and a certain degree of elasticity to adapt to the shape changes of the internal cable cores. The outer layer 1 is designed in a figure-eight shape. The two thicker inner sides are respectively through which two first cable cores 2 and second cable cores 3 pass. The two first cable cores 2 and second cable cores 3 are the neutral and live wires of the parallel cable, which are distinguished by different colors. The reinforcing layer 10 is made of thickened rubber strips pasted on the upper and lower ends of the outer layer 1. The internal shape of the reinforcing layer 10 matches the shape of the two sides of the outer layer 1, while the outer side of the reinforcing layer 10 is flat. Multiple vertical pressure-resistant ribs 11 are vertically spliced into the inside of the reinforcing layer 10. The pressure-resistant ribs 11 are made of polyvinyl chloride material. Multiple vertical pressure-resistant ribs 11 can help the weaker middle part of the outer layer 1 of the cable to have stronger pressure and deformation resistance, thus protecting the integrity of the internal ground cable 4. The entire multi-core parallel cable structure is more robust and reasonable.
[0031] The insulation layer 12 is a cross-linked polyethylene material directly wrapped around the outside of the first cable core 2 and the second cable core 3. The insulation layer 12 can reduce the leakage of the cable cores that transmit current. The filling layer 5 is an insulating paper filling material that fills the gap between the shielding layer 6 and the inner insulation layer 12. It can fill the gaps inside the cable and maintain the shape of the cable. The shielding layer 6 is a spool made of tinned copper wire braided on the outside. The shielding layer 6 can reduce the cable from external electromagnetic interference.
[0032] The protective core 9 uses paper filler material between the outer layer 1 of the cable and the ground wire protection layer 7, which can strengthen the ground wire protection layer 7. The ground wire protection layer 7 is fixedly connected to the inner side of the protective core 9. The ground wire protection layer 7 is made of thickened rubber material, which tightly wraps the ground wire cable 4 inside the ground wire protection layer 7, making it less likely for the ground wire cable 4 to have leakage problems.
[0033] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.
Claims
1. A multi-core parallel cable comprising a cable outer layer (1), a first cable core (2) and a second cable core (3), the first cable core (2) being fixedly sleeved on one side inside the cable outer layer (1), and the second cable core (3) being fixedly sleeved on the other side inside the cable outer layer (1), characterized in that: The upper and lower ends of the outer layer (1) of the cable are fixedly connected to a reinforcing layer (10), and multiple anti-compression ribs (11) are fixedly connected inside the reinforcing layer (10). The two reinforcing layers (10) are arranged in parallel relative to each other.
2. The multi-core parallel cable according to claim 1, characterized in that: An insulating layer (12) is fixedly sleeved on the outer wall of the first cable core (2) and the second cable core (3). A filling layer (5) is fixedly sleeved on the outside of the insulating layer (12). A shielding layer (6) is fixedly wrapped on the outside of the filling layer (5).
3. The multi-core parallel cable according to claim 1, characterized in that: A protective core (9) is fixedly sleeved on the inner side of the outer layer (1) of the cable, and a ground wire protection layer (7) is fixedly connected to the inner side of the protective core (9), and a ground wire cable (4) is fixedly sleeved on the inner side of the ground wire protection layer (7).
4. The multi-core parallel cable according to claim 3, characterized in that: The outer wall of the grounding protection layer (7) is fixedly fitted with an inner lining layer (8).
5. The multi-core parallel cable according to claim 3, characterized in that: The outer ends of the protective core (9) are positioned opposite to the inner side of the reinforcing layer (10).
6. The multi-core parallel cable according to claim 1, characterized in that: The first cable core (2) and the second cable core (3) are arranged in parallel relative to each other, and the first cable core (2) and the ground cable (4) are arranged in parallel relative to each other.