Communication cable, communication cable assembly, and camera device

Abstract

The utility model relates to a kind of communication cable, communication cable assembly and camera device, the communication cable includes cable core, conductive cloth, acetic acid cloth and the ground wire for the cable core and the ground of conductive cloth, the acetic acid cloth and conductive cloth are sequentially wrapped in the cable core and ground wire outside from outside to inside outside, by above-mentioned mode, the utility model can avoid the problem that 4G signal interference causes screen problem, with good rotation performance simultaneously, it is favorable to meet the rotation demand of high frequency of 4G holder camera.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a communication cable, a communication cable assembly, and a camera device. Background Technology

[0002] Outdoor 4G PTZ cameras, with their wireless networking and flexible rotation capabilities, are widely used in security monitoring, environmental monitoring, and outdoor scene management. They communicate with base stations to upload monitoring video and other information. However, as people's aesthetic preferences for camera design have increased, the overall structure of the cameras has become smaller, and the 4G antenna is getting closer to the high-speed cables inside the camera. In particular, the low-frequency signal of the 4G antenna overlaps with the high-speed data spectrum of the internal sensors. This inevitably causes mutual interference between signals, leading to problems such as image distortion.

[0003] Currently, cameras typically use FFC (Flexible Flat Cable) cables to transmit data. However, the structure of ordinary FFC cables generally consists of an inner layer of flat copper wire and an outer layer of materials such as PET or PVC, lacking a shielding structure. This makes it impossible to meet the anti-interference requirements of 4G signals. To solve the signal interference problem, metal shielding materials, such as copper foil or aluminum foil, are added to the outer layer of ordinary FFC cables. Although this can solve the 4G signal anti-interference problem, the addition of a metal shielding layer increases the rigidity of the cable, which affects the rotation of the PTZ camera and makes it difficult to meet the high-frequency rotation requirements of 4G PTZ cameras. Utility Model Content

[0004] Therefore, it is necessary to provide a communication cable that can avoid the screen distortion caused by 4G signal interference, while having good rotation performance, which is beneficial to meeting the high-frequency rotation requirements of 4G PTZ cameras.

[0005] In a first aspect, this utility model provides a communication cable, including a cable core, a conductive cloth, an acetate cloth, and a grounding wire for grounding the cable core and the conductive cloth, wherein the acetate cloth and the conductive cloth are wrapped around the cable core and the grounding wire from the outside to the inside.

[0006] Furthermore, a reinforced grounding layer is provided between the grounding wire and the conductive cloth at both ends of the communication cable, and the reinforced grounding layer is wrapped around the outside of the grounding wire.

[0007] Furthermore, the number of grounding wires is at least two;

[0008] All grounding wires are wrapped in the same reinforced grounding layer; or, each of the grounding wires is wrapped separately in a reinforced grounding layer.

[0009] Furthermore, the length of the reinforcing grounding layer along the length of the communication cable ranges from 15 mm to 30 mm.

[0010] Furthermore, both the acetate cloth and the conductive cloth are wrapped around the outside of the cable core and the grounding wire in a cylindrical structure.

[0011] Furthermore, the cable core comprises single-strand Teflon wire and twisted-pair Teflon wire.

[0012] Secondly, this utility model provides a communication cable assembly, including a flexible circuit board and a communication cable. The communication cable includes a cable core, a grounding wire, a conductive cloth, and an acetate cloth. The acetate cloth and the conductive cloth are wrapped around the cable core and the grounding wire from the outside to the inside. The cable core and the grounding wire are electrically connected to the flexible circuit board.

[0013] Furthermore, a reinforced grounding layer is provided between the grounding wire and the conductive cloth at both ends of the communication cable, and the reinforced grounding layer is wrapped around the outside of the grounding wire.

[0014] Furthermore, the cable core includes a single-strand Teflon wire and a twisted-pair Teflon wire, and the single-strand Teflon wire and the twisted-pair Teflon wire are electrically connected to the flexible circuit board through a single-strand Teflon connecting wire.

[0015] Thirdly, this utility model provides a camera device, including the communication cable assembly described above.

[0016] The above describes a communication cable including a cable core, conductive cloth, acetate cloth, and a grounding wire for grounding the cable core and conductive cloth. The acetate cloth and conductive cloth are wrapped around the cable core and grounding wire from the outside to the inside. That is, the outer layer of the communication cable is acetate cloth, followed by conductive cloth, and then the cable core and grounding wire wrapped by conductive cloth. Thus, the acetate cloth can play a role in insulation and fixation, while the conductive cloth can play a role in signal shielding. It can form an independent high-speed signal return path, reduce electromagnetic radiation leakage during signal transmission, and avoid coupling between the internally transmitted signal and external interference sources, thereby solving the interference problem of 4G signals. In particular, the dual grounding effect of conductive cloth and grounding wire can further suppress external electromagnetic interference. In addition, compared with the existing method of using metal shielding materials, conductive cloth has better flexibility, which can reduce the stiffness of the cable and improve the rotation performance of the communication cable, which is beneficial to meeting the high-frequency rotation requirements of 4G PTZ cameras. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of a communication cable provided by this utility model;

[0018] Figure 2 This is a schematic diagram of the end structure of a communication cable provided by this utility model;

[0019] Figure 3 This is a structural schematic diagram of the communication cable assembly provided by this utility model. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] See Figure 1 and Figure 2 This utility model provides a communication cable 100, which includes a cable core 11, a conductive cloth 12, an acetate cloth 13, and a grounding wire 14 for grounding the cable core 11 and the conductive cloth 12. The acetate cloth 13 and the conductive cloth 12 are wrapped around the cable core 11 and the grounding wire 14 from the outside to the inside. The cable core 11 is used for signal and power transmission; that is, the cable core 11 includes a signal core for signal transmission and a power core for power transmission. The grounding wire 14 is used for grounding, including grounding of the conductive cloth 12 and grounding of the signal and power.

[0022] Therefore, the communication cable 100 of this utility model has an outermost layer of acetate cloth 13, followed by conductive cloth 12, and then a cable core 11 and a grounding wire 14 wrapped by the conductive cloth 12. Acetate cloth is a man-made fiber made from acetic acid and cellulose through an esterification reaction, and has excellent insulation properties. Therefore, setting the outermost layer as acetate cloth can play a role in insulation and fixation. The conductive cloth is made of fiber cloth as a base material, which is pre-treated and then electroplated with a metal coating to give it metallic properties and make it a conductive fiber cloth. In this embodiment of the invention, the conductive cloth 12 can be nickel-plated conductive cloth, gold-plated conductive cloth, carbon-plated conductive cloth, or aluminum foil fiber composite cloth, etc. The conductive cloth 12 can play a signal shielding role, forming an independent high-speed signal return path, reducing electromagnetic radiation leakage during signal transmission, and avoiding coupling between internally transmitted signals and external interference sources, thereby solving the interference problem of 4G signals. In particular, the dual grounding effect of the conductive cloth and the grounding wire can further suppress external electromagnetic interference. In addition, compared with the existing method of using metal shielding materials, the conductive cloth 12 has better flexibility, which can reduce the stiffness of the cable and thus improve the rotation performance of the communication cable.

[0023] The grounding wire 14 can be a bare metal wire, such as a bare copper wire or a bare aluminum wire. Further, such as... Figure 2As shown, a reinforced grounding layer 15 is provided between the grounding wire 14 and the conductive cloth 12 at both ends of the communication cable 100, and this reinforced grounding layer 15 wraps around the outside of the grounding wire 14. By providing a reinforced grounding layer 15 at the end of the communication cable 100, the grounding impedance can be reduced and the shielding effectiveness can be improved, thereby solving the problem of decreased shielding effectiveness caused by high grounding impedance between the grounding wire 14 and the conductive cloth 12. Of course, in other embodiments, the grounding wire 14 can also be made of other materials, such as graphite / carbon fiber composite materials or conductive plastics and other non-metallic materials.

[0024] Optionally, the length of the reinforcing grounding layer 15 along the length of the communication cable 100 ranges from 15 mm to 30 mm. For example, the length of the reinforcing grounding layer 15 can be 20 mm or 25 mm.

[0025] There can be multiple grounding wires 14, for example... Figure 1 As shown, there are three grounding wires 14. One grounding wire 14 can be used for grounding the conductive cloth 12, one grounding wire 14 is used for grounding the signal cable core, and one grounding wire 14 is used for grounding the power cable core. Optionally, as... Figure 1 In the illustrated embodiment, all grounding wires 14 are encased within the same reinforced grounding layer 15. In other embodiments, each grounding wire may be encased in a separate reinforced grounding layer. That is, in this invention, all grounding wires may be encased in the same reinforced grounding layer, or each grounding wire may be encased in a separate reinforced grounding layer.

[0026] The cable core 11 comprises a single-strand Teflon wire 111 and a twisted-pair Teflon wire 112. More specifically, both the single-strand Teflon wire 111 and the twisted-pair Teflon wire 112 have a conductor core + Teflon protective layer structure, i.e., a conductor core a1 and a Teflon (PTFE) protective layer b1. The conductor core a1 can be made of copper, silver-plated copper (copper core silver-plated), or nickel-chromium alloy. In other embodiments, the cable core 11 can also be of other types, such as silicone rubber wire or polyvinyl chloride (PVC) wire.

[0027] Optionally, the single-strand Teflon wire 111 can be used as a signal cable core for transmitting signals, and the twisted-pair Teflon wire 112 can be used as a power cable core for transmitting power.

[0028] Among them, such as Figure 1 As shown, the acetate cloth 13 and the conductive cloth 12 are both wrapped in a cylindrical structure around the outside of the cable core 11 and the grounding wire 14, that is, the cross-section of the communication cable 100 is circular.

[0029] See Figure 3This utility model embodiment also provides a communication cable assembly, including a flexible printed circuit board (FPC) 21 and a communication cable 100, wherein the communication cable 100 is the communication cable described in the above embodiment. The cable core 11 and grounding wire 14 of the communication cable 100 are electrically connected to the flexible printed circuit board 21.

[0030] Taking a single-strand Teflon wire 111 and a twisted-pair Teflon wire 112 as cable cores as an example, the single-strand Teflon wire 111 and the twisted-pair Teflon wire 112 are electrically connected to the flexible circuit board 21 through a single-strand Teflon connecting wire 22, and more specifically, as shown in the example... Figure 3 As shown, each single-strand Teflon wire 111 is electrically connected to the flexible circuit board 21 via a single-strand Teflon connecting wire 22. The twisted-pair Teflon wire 112 contains two single-strand Teflon wires, and each single-strand Teflon wire in the twisted-pair Teflon wire 112 is electrically connected to the flexible circuit board 21 via a single-strand Teflon connecting wire. Each grounding wire 14 is electrically connected to the flexible circuit board 21 via a grounding connecting wire 23.

[0031] This utility model embodiment also provides a camera device, including the communication cable assembly described in the above embodiments.

[0032] In practical applications, when the communication cable 100 of this utility model is used in a 4G PTZ camera device, even if the 4G antenna inside the 4G PTZ camera device and the communication cable 100 are close to each other, the communication cable 100 of this utility model can effectively shield the interference of 4G signals, thereby avoiding the problem of screen flickering, and can meet the high-frequency rotation requirements of the 4G PTZ camera, such as the rotation requirements of tens of thousands of times (e.g., 20,000 times) or more.

[0033] The above describes a communication cable including a cable core, conductive cloth, acetate cloth, and a grounding wire for grounding the cable core and conductive cloth. The acetate cloth and conductive cloth are wrapped around the cable core and grounding wire from the outside to the inside. That is, the outer layer of the communication cable is acetate cloth, followed by conductive cloth, and then the cable core and grounding wire wrapped by conductive cloth. Thus, the acetate cloth can play a role in insulation and fixation, while the conductive cloth can play a role in signal shielding. It can form an independent high-speed signal return path, reduce electromagnetic radiation leakage during signal transmission, and avoid coupling between the internally transmitted signal and external interference sources, thereby solving the interference problem of 4G signals. In particular, the dual grounding effect of conductive cloth and grounding wire can further suppress external electromagnetic interference. In addition, compared with the existing method of using metal shielding materials, conductive cloth has better flexibility, which can reduce the stiffness of the cable and thus improve the rotation performance of the communication cable.

[0034] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A communication cable, characterized in that, It includes a cable core, conductive cloth, acetate cloth, and a grounding wire for grounding the cable core and conductive cloth, wherein the acetate cloth and conductive cloth are wrapped around the outside of the cable core and the grounding wire from the outside to the inside.

2. The communication cable according to claim 1, characterized in that, A reinforced grounding layer is provided between the grounding wire and the conductive cloth at both ends of the communication cable, and the reinforced grounding layer is wrapped around the outside of the grounding wire.

3. The communication cable according to claim 2, characterized in that, The number of grounding wires is at least two; All grounding wires are wrapped in the same reinforced grounding layer; or, each of the grounding wires is wrapped separately in a reinforced grounding layer.

4. The communication cable according to claim 2 or 3, characterized in that, The length of the reinforced grounding layer along the length of the communication cable ranges from 15 mm to 30 mm.

5. The communication cable according to claim 1, characterized in that, Both the acetate cloth and the conductive cloth are wrapped in a cylindrical structure around the outside of the cable core and the grounding wire.

6. The communication cable according to claim 1, characterized in that, The cable core includes single-strand Teflon wire and twisted-pair Teflon wire.

7. A communication cable assembly, characterized in that, The device includes a flexible circuit board and a communication cable. The communication cable includes a cable core, a grounding wire, a conductive cloth, and an acetate cloth. The acetate cloth and the conductive cloth are wrapped around the cable core and the grounding wire from the outside to the inside. The cable core and the grounding wire are electrically connected to the flexible circuit board.

8. The communication cable assembly according to claim 7, characterized in that, A reinforced grounding layer is provided between the grounding wire and the conductive cloth at both ends of the communication cable, and the reinforced grounding layer is wrapped around the outside of the grounding wire.

9. The communication cable assembly according to claim 7, characterized in that, The cable core includes a single-strand Teflon wire and a twisted-pair Teflon wire, which are electrically connected to the flexible circuit board via single-strand Teflon connecting wires.

10. A camera device, characterized in that, Includes the communication cable assembly as described in any one of claims 7-9.

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