Ultrasonic cable

Abstract

The utility model relates to the technical field of ultrasonic cables, in particular to an ultrasonic cable which comprises a shielding layer, N wire harnesses are arranged in the shielding layer, and N is an even number. Each wire harness comprises two core wires, each core wire is composed of a central conductor and an insulating coating wrapping the outer side of the central conductor, the shielding layer is formed by weaving metal wires, the metal wires in the shielding layer are arranged in a mutually overlapping mode in the direction of a preset axis, and 15-25 overlapping points are arranged in the length of each inch. According to the invention, a good electromagnetic shielding effect is achieved, the signal transmission quality is ensured, and the reliability and durability of the cable are enhanced by optimizing the conductor structure and material.

Description

Technical Field

[0001] This application relates to the field of ultrasonic cable technology, and in particular to an ultrasonic cable. Background Technology

[0002] Ultrasonic cables play a vital role in various fields, including medicine and communications. In recent years, with the development of minimally invasive surgical techniques, especially the widespread application of minimally invasive cardiac surgery, the market demand for ultrasonic cables has been increasing. This requires ultrasonic cables not only to transmit clear image signals in confined spaces but also to possess excellent flexibility and stability to adapt to various complex operating environments. Furthermore, to improve image clarity and resolution, related technologies are continuously advancing towards smaller size, higher signal transmission capabilities, and greater stability.

[0003] In existing ultrasonic cable technology, a non-concentric twisted pair structure is typically used. While this design can meet basic signal transmission requirements to some extent, it still has some shortcomings in practical applications. Firstly, due to the cumbersome structure, the overall outer diameter is usually around 0.45mm, limiting the cable to only a few signal pairs and preventing the inclusion of more signal lines to improve image clarity. Secondly, the manufacturing process for existing ultrasonic cables is complex, increasing production difficulty and efficiency. Furthermore, the large gaps within the cable negatively impact cable resilience and the stability of ultrasonic signal transmission.

[0004] However, existing ultrasonic cables generally suffer from problems such as low resilience, large size, cumbersome manufacturing processes, and signal interference. For example, while the ultrasonic cable in publication number CN202311521644.0 has solved the size problem to some extent, its structural limitations still prevent it from providing more signal channels without increasing cable size, thus failing to meet higher image clarity requirements. Therefore, there is an urgent need for an ultrasonic cable technology solution that can improve the quantity and quality of signal transmission while maintaining a smaller size. Utility Model Content

[0005] The purpose of this application is to overcome the aforementioned technical problems.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: an ultrasonic cable, including a shielding layer, wherein N bundles of wires are provided in the shielding layer, where N is an even number; each bundle of wires includes two core wires, each core wire is composed of a central conductor and an insulating coating covering the outside of the central conductor, the shielding layer is made of braided metal wires, and the metal wires in the shielding layer are arranged to overlap each other around a preset axis, with 15-25 overlap points per inch of length.

[0007] By adopting the above technical solution, the shielding layer of the ultrasonic cable is made of braided metal wires. The metal wires are arranged to overlap each other around a predetermined axis, with 15-25 overlap points per inch of length. This effectively isolates external signals from interfering with the internal signal transmission, improving the stability of signal transmission. The shielding layer contains N bundles of wires, each bundle including two core wires. Each core wire consists of a central conductor and an insulating coating covering the outside of the central conductor. The structure is compact and simple, further reducing the overall size, simplifying the production process, and enhancing the cable's resilience and the stability of ultrasonic signal transmission.

[0008] Optionally, the shielding layer is made of silver-plated copper alloy wires interwoven together, and the diameter of the silver-plated copper alloy wires is 0.02mm-0.04mm.

[0009] By adopting the above technical solution, the shielding layer is made of silver-plated copper alloy wires interlaced and woven together. The diameter of the silver-plated copper alloy wires is 0.02mm to 0.04mm. It can quickly export noise signals while isolating external signals from interfering with the internal signal transmission, thereby improving the cable's anti-interference performance and signal transmission stability.

[0010] Optionally, the center conductor is made of a single strand of annealed bare copper, and the diameter of the center conductor is 0.03mm-0.05mm.

[0011] By adopting the above technical solution, the center conductor is made of a single strand of annealed bare copper, which has good conductivity. This effectively reduces production difficulty and cost while ensuring signal transmission reliability. The diameter of the center conductor is 0.03mm to 0.05mm, allowing for finer core wire dimensions and further optimizing the overall size and space utilization of the cable.

[0012] Optionally, the insulating coating includes a base layer and a self-adhesive layer, the self-adhesive layer being applied to the surface of the base layer, the base layer being made of polyurethane, and the self-adhesive layer being made of epoxy resin.

[0013] By adopting the above technical solution, the insulating coating includes a base layer and a self-adhesive layer. The base layer is made of polyurethane, which has good dielectric and insulating properties. The self-adhesive layer is made of epoxy resin, which has unique self-adhesive properties and can produce a self-adhesive phenomenon at 140°C, thereby tightly binding the core wires in each pair of wires, improving the stability between wire pairs, and ensuring the stability of signal transmission.

[0014] Optionally, the base layer covers the central conductor, and the thickness of the base layer is 0.5μm-1μm.

[0015] By adopting the above technical solution, the base layer is wrapped around the central conductor, and the thickness of the base layer is set to 0.5μm to 1μm, so that the insulating coating has good dielectric and insulating properties, and the volume resistivity is as high as 2×10^14Ω·cm, which ensures the stability and reliability of the cable when transmitting signals.

[0016] Optionally, the thickness of the self-adhesive layer is 0.05μm-0.1μm.

[0017] By adopting the above technical solution, the self-adhesive layer of the insulating coating has unique self-adhesive properties. Its thickness is 0.05μm to 0.1μm, and it can produce a self-adhesive phenomenon at 140℃, which tightly binds the two core wires in each pair of wires, improves the stability between wire pairs, and ensures the stability of signal transmission.

[0018] Optionally, the outer diameter of the core wire is 0.046mm-0.055mm.

[0019] By adopting the above technical solution and setting the outer diameter of the core wire to 0.046mm to 0.055mm, it is possible to achieve more signal transmission pairs within the same or smaller size, thereby further improving the space utilization and signal transmission stability of the cable.

[0020] Optionally, the N bundles are arranged in concentric circles, with adjacent bundles arranged in parallel.

[0021] By adopting the above technical solution, the N bundles are arranged in concentric circles with adjacent bundles set in parallel, which improves the utilization rate of the internal space of the cable, makes the overall structure more compact, further reduces the size of the cable, increases the number of internal signal pairs, and effectively improves the signal transmission capability and stability of the cable.

[0022] Optionally, the overall outer diameter of the ultrasonic cable is 0.32mm-0.40mm.

[0023] By adopting the above technical solution, the overall outer diameter of the ultrasonic cable is reduced to 0.32mm to 0.40mm, effectively improving the space utilization of the cable and the ease of operation in minimally invasive surgery. The optimized overall outer diameter design allows the cable to maintain high performance while possessing better flexibility and throughput, meeting the market's requirements for small size and high signal transmission in ultrasonic cables.

[0024] In summary, this application has at least the following beneficial effect:

[0025] 1. The shielding layer is made of woven metal wires, which are arranged to overlap each other in the direction of a preset axis. There are 15-25 overlapping points per inch, which can effectively isolate the interference of external signals on the internal transmission signals and improve the stability of signal transmission.

[0026] 2. The core wire consists of a center conductor and an insulating coating covering the outside of the center conductor. The center conductor is made of a single annealed bare copper wire, which has good conductivity and tensile strength. The insulating coating has a composite structure, which ensures good insulation and self-adhesive properties and improves the stability between wire harnesses.

[0027] 3. The overall outer diameter of the ultrasonic cable is 0.32mm-0.40mm. Compared with existing technologies, the overall size is smaller, the internal space utilization is higher, it can accommodate more signal lines, and effectively improve the image clarity. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of an ultrasonic cable;

[0029] Figure 2 This is a cross-sectional view of the wire harness.

[0030] Figure Labels

[0031] 1. Shielding layer; 2. Wire harness; 3. Core wire; 4. Center conductor; 5. Insulating coating; 51. Base layer; 52. Self-adhesive layer. Detailed Implementation

[0032] The present application is further described in detail below with reference to the accompanying drawings.

[0033] In this embodiment, refer to Figure 1 An ultrasonic cable includes a shielding layer 1 and N bundles of wires 2, where N is an even number. Each bundle 2 includes two core wires 3, and each core wire 3 consists of a central conductor 4 and an insulating coating 5 covering the outside of the central conductor 4. The shielding layer 1 is made of braided metal wires, with the metal wires overlapping each other around a predetermined axis. There are 15-25 overlap points per inch of length, achieving the effect of increasing the quantity and quality of signal transmission while reducing the cable size. This overlapping braiding method effectively isolates interference from external signals to the internal transmitted signals, thereby improving the stability and reliability of signal transmission. Furthermore, the cable has a smaller overall outer diameter, allowing it to accommodate more signal lines and improving image clarity.

[0034] Specifically, shielding layer 1 includes a braided metal wire structure. Shielding layer 1 is made of braided metal wire, which is composed of 0.03mm silver-plated copper alloy wire interlaced together, and the conductivity of the silver-plated copper alloy wire is greater than 90%. The metal wire braid is arranged with 20 overlap points per inch. The braided metal wire shielding layer 1 can enhance the reliability of signal transmission while ensuring the stability of the cable's signal transmission. This overlapping braiding method of shielding layer 1 can not only quickly guide out noise signals but also isolate interference from external signals on the internal transmitted signals, thereby improving the reliability and stability of signal transmission.

[0035] Other alternative materials can also be used in shielding layer 1, such as nickel-plated or zinc-plated copper wire braids within the same thickness range. These materials have similar conductivity and shielding performance, achieving similar effects. For example, nickel-plated copper alloy wire can be made with a diameter of 0.03 mm and 22 overlapping points per inch; zinc-plated copper wire can also be made with a diameter of 0.03 mm and 20 overlapping points per inch. These materials all have high conductivity and excellent signal shielding effect.

[0036] Furthermore, the metal wires of shielding layer 1 can also take other shapes. For example, the metal wires can be flat, with a width of 0.05mm × 0.03mm. These flat metal wires also have 22 overlapping points per inch. Flat metal wires not only allow for higher space utilization within the cable but also achieve similar or even better shielding effects. The arrangement of the flat metal wires can be further optimized, for example, by using parallel segmented arrangements, each segment being 5mm long, forming a sawtooth-like overlapping structure to improve shielding performance.

[0037] Each bundle 2 in the N-bundle wire harness 2 includes two core wires 3. Each core wire 3 consists of a center conductor 4 and an insulating coating 5 covering the outside of the center conductor 4. The center conductor 4 is made of a single annealed bare copper wire with a diameter of 0.04 mm, a conductivity greater than 100%, and a tensile strength greater than 240 MPa. By appropriately selecting a smaller diameter center conductor 4 material and performing annealing treatment, the flexibility and conductivity of the conductor can be effectively improved, ensuring the reliability and stability of cable transmission. To further optimize cable performance, the center conductor 4 can be made of a single copper alloy wire with a diameter of 0.04 mm. Copper alloy wire has high conductivity and mechanical strength, suitable for the transmission requirements of miniaturized cables. Alternatively, a single aluminum wire with a diameter of 0.035 mm can be used as the center conductor 4, similarly increasing the flexibility of the cable while ensuring conductivity. Aluminum wire has good conductivity, suitable for signal transmission in interference environments.

[0038] The insulation coating 5 is a composite structure, consisting of a polyurethane layer (base layer 51) and an epoxy resin layer (self-adhesive layer 52). The polyurethane layer is directly coated on the center conductor 4, with a thickness of 0.5 μm-1 μm, while the epoxy resin layer is coated on the surface of the polyurethane layer, with a thickness of 0.05 μm-0.1 μm. The self-adhesive layer 52 allows for tight bonding between the core wires 3 at higher temperatures (e.g., 140°C) through its self-adhesive properties, thereby improving cable stability and signal transmission performance. The thickness of the polyurethane layer is optimized to 0.6 μm for better cable protection. Additionally, the epoxy resin layer has a thickness of 0.08 μm, providing the cable with better self-adhesive properties and stability.

[0039] The thickness of the self-adhesive layer 52 can be further optimized to 0.07 μm to better meet the self-adhesive requirements and improve the overall performance of the cable. Furthermore, the material of the insulating coating 5 can be replaced with other materials with good insulating properties, such as a polyester layer as the base layer 51 with a thickness ranging from 0.5 μm to 1 μm, achieving similar insulation effects. The material of the self-adhesive layer 52 can also be replaced with other materials with good self-adhesive properties, such as a polytetrafluoroethylene (PTFE) layer with a thickness ranging from 0.06 μm to 0.12 μm. These materials also possess good self-adhesive and insulating properties.

[0040] The connection methods between the insulation coating 5 and the center conductor 4, as well as between the two core wires 3, need further optimization to ensure the stability of the cable's internal structure. Hot pressing can be used to tightly bond the polyurethane coating to the center conductor 4 through high-temperature hot pressing, thereby improving the stability of the insulation layer. Alternatively, the epoxy resin layer can be bonded to the polyurethane layer using a hot-melt connection method, further enhancing the cable's stability by tightly bonding the two layers together.

[0041] The outer diameter of the core wires 3 in the N-bundle wire harness 2 is 0.046 mm to 0.055 mm, and each pair of core wires 3 forms a bundle 2. The outer diameter of the core wires 3 can be optimized by appropriately selecting the thickness of the insulation coating 5 and the diameter of the center conductor 4. For example, the diameter of the core wires 3 can be optimized to 0.05 mm to further reduce the overall size of the cable and improve space utilization. The core wires 3 are arranged in concentric circles for each pair, with adjacent bundles 2 arranged in parallel, thereby improving the overall stability and space utilization of the cable. When the outer diameter of the core wires 3 is 0.046 mm, the thickness of the insulation coating 5 covering the outside of the center conductor 4 can be further optimized, for example, the polyurethane layer thickness is 0.5 μm and the epoxy resin layer thickness is 0.06 μm. This optimized structure can effectively reduce the outer diameter of the cable while ensuring stable signal transmission inside the cable.

[0042] N bundles of wires 2 are arranged concentrically, with adjacent bundles 2 positioned parallel to each other. This connection method can further improve the stability and space utilization of the cable. For example, when the outer diameter of the core wire 3 is 0.046mm, the diameter of the center conductor 4 is 0.04mm, the thickness of the polyurethane layer is 0.5μm, the thickness of the epoxy resin layer is 0.06μm, and the outer diameter of the core wire 3 is optimized to 0.05mm. This structure can further reduce the outer diameter of the cable while ensuring the stability and reliability of the cable signal transmission.

[0043] In this embodiment, the overall outer diameter of the cable is 0.32 mm to 0.40 mm. A smaller outer diameter can be achieved by rationally selecting the dimensions and materials of each component of the cable. For example, the overall outer diameter of the cable can be optimized to 0.35 mm to further reduce the cable size and improve space utilization. When the overall outer diameter of the cable is 0.32 mm, this can be achieved by optimizing the dimensions and materials of each internal component of the cable.

[0044] The implementation principle of this embodiment is as follows: by adopting a novel shielding layer 1 structure, a smaller diameter center conductor 4 material, and a composite insulating coating 5 with good insulation properties, the cable size is reduced while simultaneously improving the cable's signal transmission performance. This cable structure not only effectively isolates external signal interference and improves signal transmission stability, but also accommodates more signal lines, thereby improving image clarity and resolution. The reduction in overall outer diameter also allows the cable to be used in more compact spaces, increasing its application value in multiple fields such as medical and communications. Furthermore, by employing a reasonable structural design and material selection, production difficulty and cost can be significantly reduced, and production efficiency improved.

[0045] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An ultrasonic cable, characterized in that, It includes a shielding layer (1), which contains N bundles of wires (2), where N is an even number; each bundle of wires (2) includes two core wires (3), each core wire (3) consists of a central conductor (4) and an insulating coating (5) covering the outside of the central conductor (4), the shielding layer (1) is made of braided metal wires, and the metal wires in the shielding layer (1) are arranged to overlap each other around a preset axis, with 15-25 overlap points per inch.

2. An ultrasonic cable according to claim 1, characterized in that, The shielding layer (1) is made of silver-plated copper alloy wires interlaced and woven together, and the diameter of the silver-plated copper alloy wires is 0.02mm-0.04mm.

3. An ultrasonic cable according to claim 1, characterized in that, The center conductor (4) is made of a single piece of annealed bare copper, and the diameter of the center conductor (4) is 0.03mm-0.05mm.

4. An ultrasonic cable according to claim 1, characterized in that, The insulating coating (5) includes a base layer (51) and a self-adhesive layer (52), the self-adhesive layer (52) being applied to the surface of the base layer (51), the base layer (51) being made of polyurethane, and the self-adhesive layer (52) being made of epoxy resin.

5. An ultrasonic cable according to claim 4, characterized in that, The base layer (51) covers the central conductor (4), and the thickness of the base layer (51) is 0.5μm-1μm.

6. An ultrasonic cable according to claim 4, characterized in that, The thickness of the self-adhesive layer (52) is 0.05μm-0.1μm.

7. An ultrasonic cable according to claim 1, characterized in that, The outer diameter of the core wire (3) is 0.046mm-0.055mm.

8. An ultrasonic cable according to claim 1, characterized in that, The N bundles (2) are arranged in concentric circles, and adjacent bundles (2) are arranged in parallel.

9. An ultrasonic cable according to claim 1, characterized in that, The overall outer diameter of the ultrasonic cable is 0.32mm-0.40mm.

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