Multi-channel cable assembly with PCB balun
By using a barron made of a PCB board and setting copper plate conductors and capacitors in parallel on it, combined with the design of the card slot, the existing ceramic barron components are solved, and a multi-channel cable assembly suitable for different cable types is realized, improving signal stability and production efficiency.
Patent Information
- Application Number
- CN202421594992.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-05
AI Technical Summary
The existing ceramic barron components are large in size and single in specifications, and cannot be used for cables of different specifications. The production cost is high, which increases production difficulty.
The Barron is made of a PCB board, and copper plate conductors and capacitors are installed in parallel on the Barron. The Barron is connected in pairs through the clamping slot to form a cylindrical structure, suitable for cables of different types.
It improves the stability and accuracy of signal output, is easy to install, is light in size, reduces production costs and improves production efficiency.
Smart Images
Figure CN222928568U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical cable assembly production, and particularly relates to a multi-channel cable assembly with a PCB balun. Background Art
[0002] The function of a medical magnetic resonance cable assembly is to connect to the equipment end through a coaxial cable and a connector matching the equipment end, playing a role in rapid rotation and scanning. The frequency of the magnetic resonance signal is usually between dozens of MHz and hundreds of MHz, and coaxial cables are usually used to transmit signals. At the same time, due to the very complex electromagnetic environment in which the magnetic resonance radio frequency coil operates, a balun is required to suppress the common-mode current on the coaxial line. Otherwise, it will cause a significant reduction in the signal-to-noise ratio of the magnetic resonance radio frequency coil, and even during the radio frequency transmission of the magnetic resonance system, a huge radio frequency current may be induced on the cable, causing burns to the patient.
[0003] The existing balun assemblies mainly adopt an integrated design with ceramic materials, which are large in size, have a single specification, and require a customized special protective shell for protection, increasing production costs and being inapplicable to cables of different specifications. Content of the Utility Model
[0004] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides a multi-channel cable assembly with a PCB balun.
[0005] The technical effects to be achieved by the utility model are realized through the following technical aspects:
[0006] In the first aspect, a multi-channel cable assembly with a PCB balun is provided, including a balun composed of a PCB board, a copper plate and a plurality of welding points are arranged on the balun, capacitors are arranged on the welding points, and the capacitors are connected in parallel with the copper plate;
[0007] A clamping groove is arranged on the balun, and a plurality of the baluns enclose to form a cylindrical structure through the clamping groove. The cylindrical structure includes a cavity and two openings communicating with the cavity.
[0008] In some embodiments, a plurality of the welding points are respectively arranged at both ends of the balun.
[0009] In some embodiments, the capacitor is arranged at the end of the balun, and the thickness of the capacitor is the same as that of the balun.
[0010] In some embodiments, the capacitor is arranged along the length direction of the balun at the end of the balun, and two capacitors are arranged in the middle of the end of the balun.
[0011] In some embodiments, the copper plate is exposed on the outer side of the balun.
[0012] In some embodiments, the clamping groove is provided on one side of the balun, and the clamping groove extends from one end of the balun to the other end.
[0013] In some embodiments, it further includes a fixing member, and the fixing member is sleeved on the outer side of the cylindrical structure.
[0014] In some embodiments, there are three fixing members, and the three fixing members are sleeved on the outer side of the cylindrical structure, with a gap left between adjacent fixing members.
[0015] In some embodiments, the fixing member is a high-temperature adhesive tape.
[0016] In some embodiments, there are four baluns, and adjacent baluns are connected through the clamping grooves, and the four baluns enclose to form a cuboid structure.
[0017] In summary, the present utility model has the following beneficial effects:
[0018] In the present utility model, the balun is composed of a PCB board, and a copper plate conductor and a capacitor are connected in parallel on the balun, so that resonance occurs between the copper plate conductor, the capacitor and the cable, improving the stability and accuracy of signal output. There is a clamping groove on the balun, and the baluns are connected in pairs through the clamping groove. Compared with the existing ceramic balun structure, this structure is convenient to install and has a lighter volume. By changing the distance of the slot or the model of the PCB board, it can be applied to different models of cables. It has a certain hardness and toughness, does not require an extra protective shell, reduces production costs, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic structural diagram of a multi-channel cable assembly with a PCB balun in an embodiment of the present application.
[0020] Figure 2 is a top view of the balun in an embodiment of the present application.
[0021] Figure 3 is an exploded view of a multi-channel cable assembly with a PCB balun in an embodiment of the present application.
[0022] Figure 4 is a side view of a multi-channel cable assembly with a PCB balun in an embodiment of the present application.
[0023] Markings in the figure:
[0024] 1. Balun; 2. Copper plate; 3. Welding point; 4. Capacitor; 5. Clamping groove; 6. Fixing member. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The described embodiments are some, but not all, of the embodiments of the present utility model.
[0026] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.
[0027] Example 1
[0028] Please refer to the attached Figures 1-4 , this embodiment provides a multi-channel cable assembly with a PCB balun, including a balun 1 composed of a PCB board. A copper plate 2 and multiple welding points 3 are provided on the balun 1. A capacitor 4 is provided on the welding point 3, and the capacitor 4 is connected in parallel with the copper plate 2; a clamping groove 5 is provided on the balun 1, and multiple baluns 1 enclose to form a cylindrical structure through the clamping groove 5. The cylindrical structure includes a cavity and two openings communicating with the cavity.
[0029] Among them, the balun 1 is composed of a PCB board. Compared with the existing ceramic materials, the PCB board is small in volume and light in weight, improving the flexibility of installation. It has certain hardness and toughness itself, which can ensure strength while adapting to a certain degree of bending and deformation. Welding points 3 and a copper plate 2 are provided on the PCB. The capacitor 4 is welded on the welding point 3 and is connected in parallel with the copper plate 2. A clamping groove 5 is provided on the balun 1. The clamping groove 5 can be provided on the side of the balun 1, and the thickness of the clamping groove 5 is equal to the thickness of the side of the balun 1. At this time, the baluns 1 can be connected in pairs through the clamping groove 5. The installation method is simple, improving the installation and maintenance efficiency of the equipment, facilitating subsequent maintenance of the balun 1 assembly. After damage, the repair effect can be achieved by replacing the new capacitor 4, reducing the repair cost.
[0030] The connected cylindrical structure has a through hole. This operation process is simple and convenient, and the size of the through hole can be changed by replacing different models of PCB boards or changing the position of the clamping groove 5 to make it applicable to different specifications of cables. For the cylindrical structure formed by connecting the baluns 1, its through hole is used to pass through coaxial cables. And because a capacitor 4 and a copper plate 2 are provided on the balun 1, the copper plate 2 is a conductor, and the capacitor 4 is connected in parallel with the copper plate 2. At this time, a parallel resonance circuit is formed to suppress the current on the coaxial cable.
[0031] In this embodiment, the balun 1 is composed of a PCB board, and a copper plate 2 conductor and a capacitor 4 are connected in parallel on the balun 1, so that resonance occurs between the copper plate 2 conductor, the capacitor 4 and the cable, improving the stability and accuracy of signal output. A clamping groove 5 is provided on the balun 1, and the balun 1 is connected pairwise through the clamping groove 5. Compared with the existing ceramic balun 1 structure, this structure is convenient to install and has a lighter weight. By changing the distance of the slot or the model of the PCB board, it can be applied to different types of cables. It has a certain hardness and toughness, does not require an extra protective shell, reduces production costs, and improves production efficiency.
[0032] Embodiment 2
[0033] The difference between Embodiment 2 and Embodiment 1 is that in this embodiment, the PCB balun 1 cable assembly is further optimized. As Figures 1-4 shown, a plurality of welding points 3 are respectively arranged at both ends of the balun 1. This can greatly avoid accidentally touching these sensitive areas during installation or maintenance, effectively reducing the risk of damage. When the capacitor 4 is installed, the capacitor 4 is placed in a relatively safe position, reducing the risk of damage caused by accidental contact.
[0034] Preferably, the capacitor 4 is arranged at the end of the balun 1, and the thickness of the capacitor 4 is the same as that of the balun 1. The capacitor 4 is arranged at the end of the PCB board along the length direction of the PCB board, so that it forms a plane with the PCB board, which is not easy to be accidentally touched during use, improving the product yield rate. It has low requirements for space and is easy to assemble. By selecting capacitors 4 with different capacitance values, different usage scenarios can be satisfied.
[0035] In some embodiments, two capacitors 4 are arranged at the end of the balun 1, and the two capacitors 4 are arranged in the middle of the end of the balun 1. The two capacitors 4 can reduce the material cost while ensuring the suppression of coaxial line current. The two capacitors 4 are arranged at the end of the PCB board along the length direction of the PCB board, which can make the capacitors 4 closer to the signal transmission path, improving the signal processing efficiency, and also facilitating the subsequent replacement of the capacitors 4. When the capacitor 4 fails or needs to be replaced with a different capacitance, the staff only needs to disassemble and replace the corresponding capacitor 4, without disassembling the entire balun 1, reducing the maintenance cost.
[0036] In some embodiments, a copper plate 2 is exposed on the outside of the balun 1. The exposure of the copper plate 2 makes the production of the PCB board simpler, reducing unnecessary processing steps and costs. The exposure of the copper plate 2 on the outside can more directly form a magnetic field between the capacitor 4 and the coaxial line, improving the overall performance of the product.
[0037] In some embodiments, the clamping groove 5 is provided on one side of the balun 1, and the clamping groove 5 extends from one end of the balun 1 to the other end. Specifically, the clamping groove 5 is provided at the bottom of the balun 1 and extends along one end of the balun 1 to the other end. During the installation process, the staff only needs to align one side of one balun 1 with the clamping groove 5 of another balun 1 and press to complete the connection, without the need for additional tools, which greatly saves installation time and labor costs. At the same time, after the connection is completed, the surface of the balun 1 is clean and tidy, without any redundant protrusions or gaps, improving the aesthetics of the product and its dust and waterproof performance.
[0038] In some embodiments, it further includes a fixing member, which is sleeved on the outer side of the cylindrical structure. The fixing member is used to fix the formed cylindrical structure, improving its stability during use. Among them, the fixing member can be structures such as tapes, cable ties, fixing sleeves, etc., to fix the clamped balun 1.
[0039] In some embodiments, the fixing member is a high-temperature adhesive tape. During use, the high-temperature adhesive tape is sleeved on the outer side of the cylindrical structure for bonding and fixing, and the high-temperature adhesive tape has good high-temperature resistance, enabling the PCB balun 1 cable assembly to be applicable to high-temperature working environments.
[0040] Preferably, there are four baluns 1, and adjacent baluns 1 are connected through the clamping groove 5, and the four baluns 1 enclose a cuboid structure. Among them, when the four baluns 1 are connected to each other and enclosed into a cuboid structure, the stability of the product is improved. This structure can well resist and disperse the tensile force in the horizontal direction and the pressure in the vertical direction, improving the load-bearing capacity and service life of the product.
[0041] In some embodiments, there are three fixing members, and the three fixing members are sleeved on the outer side of the cylindrical structure, with gaps left between adjacent fixing members. Among them, the three fixing members can be respectively fixed in the middle and on both sides of the cylindrical mechanism, which can make the cylindrical structure more stable and improve the use stability of the equipment.
[0042] Embodiment 3
[0043] This embodiment provides a cable, including a multi-channel cable assembly with a PCB balun and a cable body. The multi-channel cable assembly with a PCB balun is sleeved on the cable body through the cavity. During the installation process, the cable passes through the cavity of the multi-channel cable assembly with a PCB balun from the opening. At this time, since a capacitor and a copper plate are provided on the balun, and the copper plate is a conductor, the capacitor and the copper plate are connected in parallel to form a parallel resonance circuit to suppress the current on the coaxial cable.
[0044] The cable of this embodiment can improve the stability and accuracy of signal output. It is light in weight, easy to install quickly in various environments, has a certain hardness and toughness, ensuring that it can maintain a stable form and performance during use, and is applicable to various working environments. When it needs to be applied to different scenarios, only the capacitor on the multi-channel cable assembly with a PCB balun needs to be replaced, which improves work efficiency.
[0045] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0046] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of this utility model is usually placed. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0047] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the component must be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0048] In the present utility model, unless otherwise clearly defined and limited, the first feature being above or below the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through other features between them. Moreover, the first feature being above, over and on the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.
[0049] Although the description of the present utility model is made in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, improvements and variations are included within the spirit and scope of the appended claims.
Claims
1. A multi-channel cable assembly with a PCB balun, characterized in that: A balun is formed by a PCB board, wherein a copper plate and a plurality of welding points are arranged on the balun, a capacitor is arranged on the welding point, and the capacitor is connected in parallel with the copper plate; The balun is provided with a clamping groove, and a plurality of the baluns are surrounded by the clamping groove to form a cylindrical structure, and the cylindrical structure includes a cavity and two openings communicating with the cavity.
2. The multi-channel cable assembly with PCB balun according to claim 1, characterized in that: The plurality of welding points are respectively arranged at two ends of the balun.
3. The multi-channel cable assembly with PCB balun according to claim 2, characterized in that: The capacitor is arranged at an end of the balun along the length direction of the balun, and the thickness of the capacitor is consistent with the thickness of the balun.
4. The multi-channel cable assembly with PCB balun according to claim 3, characterized in that: Two capacitors are arranged at the end of the balun, and the two capacitors are arranged in the middle of the end of the balun.
5. The multi-channel cable assembly with PCB balun according to claim 1, characterized in that: The outer side of the balun has a copper plate exposed.
6. The multi-channel cable assembly with PCB balun according to claim 1, characterized in that: The clamping slot is arranged on one side of the balun, and the clamping slot extends from one end of the balun to the other end.
7. The multi-channel cable assembly with PCB balun according to claim 1, characterized in that: It also includes a fixing piece, which is sleeved on the outside of the cylindrical structure.
8. The multi-channel cable assembly with PCB balun according to claim 7, characterized in that: There are three fixing members, which are sleeved on the outside of the cylindrical structure, and gaps are left between adjacent fixing members.
9. The multi-channel cable assembly with PCB balun according to claim 7, characterized in that: The fixing piece is high temperature adhesive tape.
10. The multi-channel cable assembly with PCB balun according to claim 1, characterized in that: There are four baluns, and adjacent baluns are connected via the clamping grooves, and the four baluns are enclosed to form a rectangular parallelepiped structure.