Shielding device for cable
The shielding device, composed of a soft strip and a metal wire mesh, utilizes magnetic components and adjustment mechanisms to achieve tight coverage of the cable, solving the problems of poor implementation and adaptability of shielding sleeves in long distances and small spaces, and improving the shielding effect.
Patent Information
- Application Number
- CN202511426802.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-02-27
AI Technical Summary
Existing shielding sleeves are difficult to tightly cover cables in long-distance, confined spaces, and cannot meet the shielding requirements of cables with different cross-sections.
The shielding device consists of a soft strip and a metal mesh. The soft strip is equipped with magnetic components and adjustment components. It achieves tight coverage through magnetic connection and provides shielding effectiveness through the metal mesh, adapting to cables of different diameters.
It enables tight cable coverage in confined spaces, improves shielding effectiveness, and adapts to the needs of cables with different cross-sections.
Smart Images
Figure CN121586247A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electromagnetic shielding, in particular to a shielding device for a cable. BACKGROUND
[0002] The accelerator system belongs to a complex large scientific engineering device, has numerous electrical and electronic devices, and problems such as electromagnetic distribution in space, crosstalk coupling of cables, and ground line modulation will have a negative impact on stable operation. For the accelerator system, since the working frequency band is mostly concentrated in the low frequency, the transmission through the cable is the main cause of the interference problem, and when the length of part of the cable meets the quarter wavelength of the signal frequency, radiation emission will be generated due to the antenna effect.
[0003] In the prior art, similar to the large scientific engineering device of the accelerator system, the integrated wiring method is usually used to alleviate the interference of cable transmission on the subsystem and device. However, due to the difference of the device and the limitation of the space, the integrated wiring method cannot be used in some areas, which will inevitably cause the cable to have no specified route and increase the probability of crosstalk coupling. At present, the main means to solve the above problems is to use a shielding sleeve to isolate the cable. According to the cross section of the cable, a shielding sleeve of different size can be customized to classify and isolate the cable. The commonly used shielding sleeves include zipper type, buckle type, pasting type, and self-winding type. In general, for small distances and large spaces, the above-mentioned shielding sleeves are good choices.
[0004] However, for special cases such as long distances and small spaces, the use of the above-mentioned shielding sleeves will have poor implementation, poor adhesion, and other problems, which will greatly reduce the shielding effect. Moreover, the above-mentioned shielding sleeves cannot meet the shielding requirements of cables with different cross sections. SUMMARY
[0005] The present application aims to solve the technical problems in the related art. To this end, the present application provides a shielding device for a cable to solve the defects that the existing shielding sleeve is difficult to coat the cable in the case of long distance and small space, poor adhesion, and other defects, and the shielding device can meet the shielding requirements of cables with different cross sections by optimizing the structure.
[0006] The present application provides a shielding device for a cable, comprising: The soft belt is flatly unfolded in a rectangular shape; The metal wire mesh is attached to the side surface of the soft belt; The first magnetic part extends along one long side of the soft belt and is fixedly connected with the soft belt; The second magnetic part is used to magnetically connect the first magnetic part; The second magnetic member is installed on the soft band and is arranged in parallel and spaced apart between the other long side of the soft band and the first magnetic member, so as to enable the soft band to cover the cable.
[0007] According to the shielding device for cable provided by the present application, the adjusting assembly is used to adjust the length of the soft band between the second magnetic member and the first magnetic member, so as to adapt to cables with different diameters.
[0008] According to the shielding device for cable provided by the present application, the adjusting assembly comprises a plurality of sleeves arranged in the width direction of the soft band, and the second magnetic member is selectively inserted into the sleeves.
[0009] According to the shielding device for cable provided by the present application, the length of the sleeve is the same as the length of the soft band, and the sleeve is provided with a bag opening at the end thereof, so as to limit the movement of the second magnetic member along the length direction of the soft band when the second magnetic member is assembled with or disassembled from the sleeve.
[0010] According to the shielding device for cable provided by the present application, the metal wire mesh is sewn on the side of the soft band.
[0011] According to the shielding device for cable provided by the present application, the performance parameters of the metal wire mesh are selected according to the shielding effectiveness, and the shielding effectiveness is calculated by the following formula (1): (1); In the formula, SE H is the shielding effectiveness, and the unit is dB; Z 0 is the wave impedance in free space, and the unit is Ω, Z s is the surface impedance of the metal wire mesh, and the unit is Ω.
[0012] According to the shielding device for cable provided by the present application, the performance parameters of the metal wire mesh include the surface impedance of the metal wire mesh Z s , the surface resistance of the metal wire mesh R s and the surface inductance of the metal wire mesh L s . The surface impedance of the metal wire mesh Z s is calculated by the following formula (2): (2); In the formula, R s the unit of is Ω,L s The unit is H; ω is the electromagnetic wave angular frequency, and the unit is rad / s; Surface resistance of metal wire mesh R s It is calculated by the following formula (3): (3); Surface inductance of metal wire mesh L s It is calculated by the following formula (4): (4); In the formula, a is the distance between the metal wires, and the unit is m; d is the diameter of the metal wire, and the unit is m; σ is the electrical conductivity of the material, and the unit is S / m; I 0 ( ) is the 0-order modified Bessel function; I 1 ( ) is the 1-order modified Bessel function.
[0013] The shielding device for the cable provided by the application further comprises a slot type bridge, the soft band is wrapped around the cable, and the two ends of the soft band extend into the slot type bridge to ensure the integrity of the shielding; The length of the soft band extending into the slot type bridge is between 5cm and 10cm.
[0014] The material of the soft band is polyvinyl chloride.
[0015] The first magnetic member and the second magnetic member are both arranged in the shape of a rectangular strip.
[0016] The above one or more technical solutions in the application have at least one of the following technical effects: The first magnetic member and the second magnetic member are installed on the soft band and the metal wire mesh is attached to the soft band, so that the metal wire mesh and the soft band can conveniently wrap the cable, the first magnetic member and the second magnetic member are connected through magnetic attraction, the cable can be conveniently wrapped in a narrow space, the cable can be tightly wrapped to improve the shielding effect, and the size of the cross section of the cable can be conveniently adjusted.
[0017] In addition to the technical problems solved by the present application, the technical features of the technical solutions and the advantages brought by the technical features described above, other technical features of the present application and the advantages brought by the technical features will be further described with reference to the accompanying drawings, or will be known through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0019] Figure 1 A structural diagram of a shielding device for a cable is provided for the embodiments of the present application.
[0020] Figure 2 A structural diagram of another shielding device for a cable is provided for the embodiments of the present application.
[0021] Figure 3 A structural diagram of another shielding device for a cable is provided for the embodiments of the present application.
[0022] Reference signs: 10, wire mesh; 20, soft belt; 31, first magnetic member; 32, second magnetic member; 40, sleeve bag; 41, first sleeve bag; 42, second sleeve bag; 43, third sleeve bag; 44, fourth sleeve bag; 50, slot type bridge. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions in the present application will be clearly described below with reference to the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0024] In the embodiments of the present application, a shielding device for a cable is introduced.
[0025] As shown in Figure 1 The shielding device mainly includes a soft belt 20, a wire mesh 10, a first magnetic member 31 and a second magnetic member 32.
[0026] The soft band 20 is flatly arranged in a rectangular shape. The metal wire mesh 10 is arranged on the side of the soft band 20 to provide shielding effect. Preferably, the metal wire mesh 10 is sewn on the side of the soft band 20.
[0027] The first magnetic member 31 extends along one long side of the soft band 20. The first magnetic member 31 is fixedly connected to the soft band 20. The second magnetic member 32 is used to magnetically connect the first magnetic member 31.
[0028] The second magnetic member 32 is arranged on the soft band 20. The second magnetic member 32 is arranged in parallel and spaced apart between the other long side of the soft band 20 and the first magnetic member 31, so as to cover the cable with the soft band 20.
[0029] Preferably, the first magnetic member 31 and the second magnetic member 32 are arranged in a rectangular strip shape. In this way, when the first magnetic member 31 and the second magnetic member 32 are close to each other and magnetically attracted, they are easy to overlap, so that the soft band 20 can cover the cable more tightly.
[0030] Further, the length of the bag 40 is the same as the length of the soft band 20. The bag 40 is provided with a bag opening at the end thereof, which is used to limit the movement of the second magnetic member 32 along the length direction of the soft band 20 when the second magnetic member 32 is assembled or disassembled with the bag 40.
[0031] Further, the material of the soft band 20 is polyvinyl chloride.
[0032] Further, the first magnetic member 31 and the second magnetic member 32 are arranged in a rectangular strip shape.
[0033] In the embodiment, the first magnetic member 31 and the second magnetic member 32 are arranged on the soft band 20, and the metal wire mesh 10 is arranged on the soft band 20, so that the metal wire mesh 10 and the soft band 20 can conveniently cover the cable. The first magnetic member 31 and the second magnetic member 32 are connected by magnetic attraction, so that the cable can be conveniently covered in a narrow space. The cable can be tightly covered, the shielding effect is improved, and the cable can be conveniently adjusted according to the cross-sectional size.
[0034] On the basis of the above embodiment, another embodiment of the present application introduces a shielding device for a cable.
[0035] The soft band 20 is provided with an adjusting assembly for adjusting the length of the soft band 20 between the second magnetic member 32 and the first magnetic member 31, so that the soft band 20 can be adapted to cables with different diameters.
[0036] Further, the adjusting assembly comprises a plurality of pockets 40. The pockets 40 are arranged at intervals in the width direction of the soft belt 20. Moreover, the interval between each pocket 40 and the first magnetic member 31 is in a fixed proportional relationship with the diameter of the cable.
[0037] Preferably, the adjusting assembly comprises four pockets 40. The four pockets 40 are arranged at intervals in the width direction of the soft belt 20. As shown in the drawings, along the width direction of the soft belt 20, the first pocket 41, the second pocket 42, the third pocket 43 and the fourth pocket 44 are arranged in sequence from the lower long side of the soft belt 20 upwards. Figure 1
[0038] Correspondingly, the second magnetic member 32 is selectively inserted into the pockets 40, so as to meet the close covering of cables with different diameters.
[0039] For example, the width of the soft belt 20 is 205 mm, the first magnetic member 31 is fixed to one end of the soft belt 20 by sewing, and is defined as 0 mm, i.e. 0 point. The width of the first magnetic member 31 is 10 mm, the fourth pocket 44 is 95 mm away from the 0 point, and the corresponding adaptive cable bundle diameter is 15 mm. The third pocket 43 is 125 mm away from the 0 point, and the corresponding adaptive cable bundle diameter is 25 mm. The second pocket 42 is 174 mm away from the 0 point, and the corresponding adaptive cable bundle diameter is 40 mm. The first pocket 41 is 205 mm away from the 0 point, and the corresponding adaptive cable bundle diameter is 50 mm.
[0040] That is to say, if the diameter of the cable is 12 mm, the second magnetic member 32 only needs to be inserted into the fourth pocket 44, so as to enable the soft belt 20 to closely cover the cable. If the diameter of the cable is 22 mm, the second magnetic member 32 only needs to be inserted into the third pocket 43, so as to enable the soft belt 20 to closely cover the cable. If the diameter of the cable is 38 mm, the second magnetic member 32 only needs to be inserted into the second pocket 42, so as to enable the soft belt 20 to closely cover the cable.
[0041] Preferably, the interval between each pocket 40 and the upper long side of the soft belt 20 is π times the diameter of the corresponding cable. That is to say, the interval between the pocket 40 and the first magnetic member 31 is the circumference of the corresponding cable.
[0042] On the basis of the above embodiment, another embodiment of the present application introduces a shielding device for a cable.
[0043] In order to ensure that the shielding performance of the metal wire mesh 10 can meet the shielding requirements of cables with different cross sections, the performance parameters of the metal wire mesh 10 are selected according to the shielding performance, and the shielding performance is calculated by the following formula (1): (1); In the formula, SE H is the shielding effectiveness, unit is dB; Z 0 is the impedance of free space, unit is Ω, Z s is the surface impedance of the wire mesh, unit is Ω.
[0044] Further, the performance parameters of the wire mesh 10 include the surface impedance of the wire mesh Z s , the surface resistance of the wire mesh R s , and the surface inductance of the wire mesh L s .
[0045] The surface impedance of the wire mesh Z s is calculated by the following formula (2): (2); In the formula, R s , unit is Ω, L s , unit is H; ω is the angular frequency of the electromagnetic wave, unit is rad / s; The surface resistance of the wire mesh R s is calculated by the following formula (3): (3); The surface inductance of the wire mesh L s is calculated by the following formula (4): (4); In the formula, a is the distance between the wires, unit is m; d is the diameter of the wire, unit is m; σ is the conductivity of the material, unit is S / m; I 0 ( ) is the 0th modified Bessel function; I 1 ( ) is the 1st modified Bessel function.
[0046] On the basis of the above embodiment, in another embodiment of the present application, a shielding device for a cable is introduced.
[0047] As Figure 2 and Figure 3As shown, in order to ensure the integrity of the cable shielding effect, trough-type cable trays 50 are also provided at both ends of the flexible strip 20.
[0048] Specifically, after the flexible strip 20 wraps around the cable, a cable tray 50 is provided at each end of the flexible strip 20. Furthermore, the end of the flexible strip 20 extends into the cable tray 50. The length of the flexible strip 20 extending into the cable tray 50 is between 5cm and 10cm.
[0049] like Figure 2 As shown, the cable diameter is 38mm. At this time, the second magnetic component 32 is inserted into the second sleeve 42, so that the soft strip 20 matches the diameter of the cable, achieving the effect of tightly wrapping the cable.
[0050] like Figure 3 As shown, the diameter of the cable is 48mm. At this time, the second magnetic component 32 is inserted into the first pouch 41 so that the soft tape 20 can be matched with the diameter of the cable to achieve the effect of tightly wrapping the cable.
[0051] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present 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. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0052] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.
[0053] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal height than the second feature.
[0054] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms is not limited to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.
[0055] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A shielding device for cables, characterized in that, include: The soft strip (20) is rectangular when flattened. A metal wire mesh (10) is fitted to the side of the soft strip (20); A first magnetic element (31) extends along one long side of the flexible strip (20) and is fixedly connected to the flexible strip (20); The second magnetic component (32) is used to magnetically connect the first magnetic component (31). The second magnetic element (32) is mounted on the soft strip (20) and is arranged parallel to each other between the other long side of the soft strip (20) and the first magnetic element (31) so that the soft strip (20) can cover the cable.
2. The shielding device for cables according to claim 1, characterized in that, The flexible strip (20) is provided with an adjustment component for adjusting the length of the flexible strip (20) located between the second magnetic element (32) and the first magnetic element (31) to adapt to cables of different diameters.
3. The shielding device for cables according to claim 2, characterized in that, The adjustment assembly includes a plurality of pockets (40) spaced apart in the width direction of the soft strip (20), and the second magnetic element (32) is selectively inserted into one of the pockets (40).
4. The shielding device for cables according to claim 3, characterized in that, The length of the sleeve (40) is the same as the length of the soft strip (20). The sleeve (40) has a bag opening at its end to restrict the second magnetic component (32) from moving along the length direction of the soft strip (20) when it is assembled or disassembled with the sleeve (40).
5. The shielding device for cables according to any one of claims 1 to 4, characterized in that, The wire mesh (10) is sewn onto the side of the flexible strip (20).
6. The shielding device for cables according to claim 5, characterized in that, The performance parameters of the metal wire mesh (10) are selected based on the shielding effectiveness, which is calculated using the following formula (1): （1）； In the formula, SE H The shielding effectiveness is measured in dB. Z 0 Free-space wave impedance, in Ω. Z s This represents the surface impedance of the metal wire mesh, measured in Ω.
7. The shielding device for cables according to claim 6, characterized in that, The performance parameters of the metal wire mesh (10) include the surface impedance of the metal wire mesh. Z s Surface resistance of metal wire mesh R s and surface inductance of metal mesh L s ; Metal wire mesh surface impedance Z s The calculation is performed using the following formula (2): （2）； In the formula, R s The unit is Ω. L s The unit is H; ω Angular frequency of electromagnetic waves, measured in rad / s; Surface resistance of metal wire mesh R s The calculation is performed using the following formula (3): （3）； Surface inductance of metal wire mesh L s The calculation is performed using the following formula (4): （4）； In the formula, a This is the distance between the metal wires, in meters (m). d This is the diameter of the metal wire, in meters (m). σ The electrical conductivity of the material is expressed in S / m. I 0 ( ) It is a 0th-order modified Bessel function; I 1 ( ) It is a first-order modified Bessel function.
8. The shielding device for cables according to claim 7, characterized in that, It also includes a cable tray (50), wherein the flexible strip (20) covers the cable and extends into the cable tray (50) at both ends to ensure the integrity of the shielding; The length of the soft strip (20) extending into the trough-type cable tray (50) is between 5cm and 10cm.
9. The shielding device for cables according to claim 5, characterized in that, The material used to make the soft strip (20) is polyvinyl chloride.
10. The shielding device for cables according to claim 9, characterized in that, Both the first magnetic element (31) and the second magnetic element (32) are configured as rectangular strips.