Cable structure capable of resisting signal interference
By setting up a multi-layer shielding layer and a twisted ground wire in the cable, the internal and external interference of the multi-stranded signal lines of the cable is solved, and the signal transmission quality and the normal operation ability of the equipment are improved.
Patent Information
- Application Number
- CN202420907716.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-28
AI Technical Summary
When the existing cables are set up with multiple strands of signal lines, the shielding effect is poor, resulting in mutual interference within the signal lines and external interference, the signal transmission quality is reduced, and the normal operation of the equipment is affected.
A cable structure that is anti-signal interference is designed, and the anti-interference ability is enhanced by setting a multi-layer shielding layer in the high-frequency and low-frequency signal data transmission lines and setting a tinned copper wire twisted ground wire on the outside.
It effectively avoids interference between signal lines and external interference, ensures signal transmission quality, enhances the anti-interference ability of the cables, and ensures the normal operation of the equipment.
Smart Images
Figure CN222300368U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cables, in particular to a cable structure capable of resisting signal interference. Background Art
[0002] Cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires; cables include power cables, control cables, compensation cables, shielded cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc. They are all composed of single or multiple wires and insulation layers, used to connect circuits, electrical appliances, etc.
[0003] At present, when multiple signal wires are arranged inside a cable, due to poor shielding effect, the multiple signal wires interfere with each other, and the multiple signal wires are interfered by external signals, which greatly reduces the signal transmission quality of the signal wires and affects the use of the connected equipment. Based on this, we propose a cable structure that is resistant to signal interference. Utility Model Content
[0004] In view of the deficiencies of the prior art, the utility model provides a cable structure that is resistant to signal interference. After being improved, the structure can effectively solve the problems raised in the above-mentioned background technology.
[0005] The technical solution of the utility model is:
[0006] A cable structure resistant to signal interference, comprising an outer sheath and a signal line;
[0007] The outer layer is provided with a signal line inside, and the signal line includes a high-frequency signal data transmission line and a low-frequency signal data transmission line, and the high-frequency signal data transmission line is provided with a first conductor layer, a first insulating layer, a first shielding layer and a second shielding layer in sequence from the inside to the outside; the low-frequency signal data transmission line is provided with a second conductor layer, a second insulating layer and a third shielding layer in sequence from the inside to the outside;
[0008] The inner side of the outer layer is also provided with a fourth shielding layer and a fifth shielding layer in sequence; the inner side of the outer layer is also provided with a ground wire, which is formed by twisting four tinned copper wires;
[0009] The first shielding layer is an aluminum foil layer, the second shielding layer is a braided copper mesh layer, the third shielding layer is an aluminum foil layer, the fourth shielding layer is an aluminum foil layer, and the fifth shielding layer is a braided copper mesh layer.
[0010] Furthermore, the first conductor layer and the first insulating layer constitute a first core wire, the number of the first core wires is four, which are twisted in pairs and then twisted in pairs, the first conductor layer is a tinned copper wire layer, and the first insulating layer is a HDPE plastic layer.
[0011] Furthermore, the number of low-frequency signal data transmission lines is two, the second conductor layer and the second insulating layer constitute a second core wire, the number of second core wires is two and they are twisted, the second conductor layer is a tinned copper wire layer, and the second insulating layer is a PVC plastic layer.
[0012] Furthermore, a first power line, a second power line and a signal switch control line are also arranged inside the outer layer.
[0013] Furthermore, the first power line is provided with a third conductor layer and a third insulation layer from the inside to the outside, the third conductor layer is a tinned copper wire layer, and the third insulation layer is a PVC plastic layer; the number of the first power lines is six, and they are twisted in pairs.
[0014] Furthermore, the second power line is provided with a fourth conductor layer and a fourth insulation layer from the inside to the outside, the fourth conductor layer is a tinned copper wire layer, and the fourth insulation layer is a PVC plastic layer; the number of the second power lines is six.
[0015] Furthermore, the signal switch control line is provided with a fifth conductor layer and a fifth insulation layer from the inside to the outside, the fifth conductor layer is a tinned copper wire layer, and the fifth insulation layer is a PVC plastic layer; the number of the signal switch control lines is four.
[0016] Furthermore, the outer layer is a PVC plastic layer.
[0017] The beneficial effects of the utility model are:
[0018] Compared with the prior art, the utility model is capable of achieving signal interference resistance of high-frequency signal data transmission lines by providing a first shielding layer and a second shielding layer, and can achieve signal interference resistance of low-frequency signal data transmission lines by providing a third shielding layer. The cable can achieve external signal interference resistance by providing a fourth shielding layer and a fifth shielding layer. At the same time, four tinned copper wires are twisted together to form a ground wire, which further enhances the ability of the cable to resist various signal interferences. In this way, the utility model can avoid signal interference between high-frequency signal data transmission lines and low-frequency signal data transmission lines, and effectively prevent external signal interference on signal lines. It has a strong ability to resist signal interference, can effectively ensure the signal transmission quality of the signal line, thereby ensuring the normal operation of the connected equipment, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of the utility model.
[0020] In the figure, 1, outer layer; 2, signal line; 3, high-frequency signal data transmission line; 4, low-frequency signal data transmission line; 5, first conductor layer; 6, first insulating layer; 7, first shielding layer; 8, second shielding layer; 9, second conductor layer; 10, second insulating layer; 11, third shielding layer; 12, fourth shielding layer; 13, fifth shielding layer; 14, ground wire; 15, first core wire; 16, second core wire; 17, first power line; 18, second power line; 19, signal switch control line; 20, third conductor layer; 21, third insulating layer; 22, fourth conductor layer; 23, fourth insulating layer; 24, fifth conductor layer; 25, fifth insulating layer. DETAILED DESCRIPTION
[0021] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:
[0022] like Figure 1 As shown,
[0023] A cable structure for resisting signal interference, comprising an outer layer 1 and a signal line 2;
[0024] A signal line 2 is arranged inside the outer layer 1, and the signal line 2 includes a high-frequency signal data transmission line 3 and a low-frequency signal data transmission line 4. The high-frequency signal data transmission line 3 is provided with a first conductor layer 5, a first insulating layer 6, a first shielding layer 7 and a second shielding layer 8 in sequence from the inside to the outside; the low-frequency signal data transmission line 4 is provided with a second conductor layer 9, a second insulating layer 10 and a third shielding layer 11 in sequence from the inside to the outside; in the present application, the first shielding layer 7 and the second shielding layer 8 are arranged on the outermost side of the high-frequency signal data transmission line 3, and have the ability of resisting signal interference of the high-frequency signal data transmission line 3, and the third shielding layer 11 is arranged on the outermost side of the low-frequency signal data transmission line 4, and has the ability of resisting signal interference of the low-frequency signal data transmission line 4, thereby avoiding signal interference between the high-frequency signal data transmission line 3 and the low-frequency signal data transmission line 4;
[0025] The inner side of the outer layer 1 is also provided with a fourth shielding layer 12 and a fifth shielding layer 13 in sequence; the inner side of the outer layer 1 is also provided with a ground wire 14, and the ground wire 14 is formed by twisting four tinned copper wires; by providing the fourth shielding layer 12, the fifth shielding layer 13 and the ground wire 14 structure, the ability of the cable to resist various signal interferences is greatly enhanced;
[0026] Specifically, the first shielding layer 7 is an aluminum foil layer, the second shielding layer 8 is a braided copper mesh layer, the third shielding layer 11 is an aluminum foil layer, the fourth shielding layer 12 is an aluminum foil layer, and the fifth shielding layer 13 is a braided copper mesh layer.
[0027] As a preferred embodiment; the first conductor layer 5 and the first insulating layer 6 constitute a first core wire 15, the number of the first core wires 15 is four, which are twisted in pairs and then twisted in pairs, the first conductor layer 5 is a tinned copper wire layer, and the first insulating layer 6 is a HDPE plastic layer; the purpose of this design is: to have the function of wire integration, effectively reduce the space of the cable, and thus improve the use effect; in addition, the two first core wires 15 can form a unit A after being twisted, and then the two units A are twisted again, and the symmetrically twisted tinned copper wires are conducive to the transmission of high-frequency signals, and such a structure makes the characteristic impedance of the high-frequency signal data transmission line 3 100Ω, and the attenuation is 4db / 100m when passing a high-frequency signal of 400MHz.
[0028] As a preferred embodiment; the number of the low-frequency signal data transmission lines 4 is two, the second conductor layer 9 and the second insulating layer 10 constitute the second core wire 16, the number of the second core wire 16 is two, which are twisted, the second conductor layer 9 is a tinned copper wire layer, and the second insulating layer 10 is a PVC plastic layer; it can be understood that the low-frequency signal data transmission line 4 can provide signal transmission below 30KHz.
[0029] As a preferred embodiment; the outer layer 1 is also provided with a first power line 17, a second power line 18 and a signal switch control line 19; it can be understood that the first power line 17 is a large power line, using 0.75mm 2 The six large power lines provide power transmission for the entire device; the second power line 18 is a small power line, using 0.5mm 2 The six small power lines provide power for the signal switch control line 19, the high-frequency signal data transmission line 3 and the low-frequency signal data transmission line 4.
[0030] As a preferred embodiment; the first power cord 17 is provided with a third conductor layer 20 and a third insulating layer 21 from the inside to the outside, the third conductor layer 20 is a tinned copper wire layer, and the third insulating layer 21 is a PVC plastic layer; the number of the first power cords 17 is six, which are twisted in pairs.
[0031] As a preferred embodiment; the second power line 18 is provided with a fourth conductor layer 22 and a fourth insulating layer 23 from the inside to the outside, the fourth conductor layer 22 is a tinned copper wire layer, and the fourth insulating layer 23 is a PVC plastic layer; the number of the second power lines 18 is six.
[0032] As a preferred embodiment, the signal switch control line 19 is provided with a fifth conductor layer 24 and a fifth insulating layer 25 from the inside to the outside, the fifth conductor layer 24 is a tinned copper wire layer, and the fifth insulating layer 25 is a PVC plastic layer; the number of the signal switch control lines 19 is four.
[0033] As a preferred embodiment, the outer layer 1 is a PVC plastic layer.
[0034] The PVC plastics used above all have CL2 flame retardant and waterproof properties, which can further improve the quality of use of the cable.
[0035] It should be pointed out that the main problem in the prior art is that when multiple signal lines are arranged inside the cable, due to poor shielding effect, the multiple signal lines interfere with each other, and the multiple signal lines are interfered by external signals, which greatly reduces the signal transmission quality of the signal lines and affects the use of the connected devices.
[0036] Therefore, through the improvements of the present application, signal interference between the high-frequency signal data transmission line 3 and the low-frequency signal data transmission line 4 can be avoided, and external signal interference to the signal line 2 can be effectively prevented. It has a strong ability to resist signal interference and can effectively ensure the signal transmission quality of the signal line 2, thereby ensuring the normal operation of the connected equipment, and is highly practical.
[0037] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.
Claims
1. A cable structure for resisting signal interference, characterized in that: Including outer layer and signal line; The outer layer is provided with a signal line inside, and the signal line includes a high-frequency signal data transmission line and a low-frequency signal data transmission line, and the high-frequency signal data transmission line is provided with a first conductor layer, a first insulating layer, a first shielding layer and a second shielding layer in sequence from the inside to the outside; the low-frequency signal data transmission line is provided with a second conductor layer, a second insulating layer and a third shielding layer in sequence from the inside to the outside; The inner side of the outer layer is also provided with a fourth shielding layer and a fifth shielding layer in sequence; the inner side of the outer layer is also provided with a ground wire, which is formed by twisting four tinned copper wires; The first shielding layer is an aluminum foil layer, the second shielding layer is a braided copper mesh layer, the third shielding layer is an aluminum foil layer, the fourth shielding layer is an aluminum foil layer, and the fifth shielding layer is a braided copper mesh layer.
2. The cable structure for resisting signal interference according to claim 1, characterized in that: The first conductor layer and the first insulating layer constitute a first core wire. The number of the first core wires is four, which are twisted in pairs. The first conductor layer is a tinned copper wire layer, and the first insulating layer is a HDPE plastic layer.
3. The cable structure for resisting signal interference according to claim 2, characterized in that: The number of the low-frequency signal data transmission lines is two, the second conductor layer and the second insulating layer constitute a second core wire, the number of the second core wires is two and they are twisted, the second conductor layer is a tinned copper wire layer, and the second insulating layer is a PVC plastic layer.
4. The cable structure for resisting signal interference according to claim 3, characterized in that: The outer layer is also provided with a first power line, a second power line and a signal switch control line.
5. The cable structure for resisting signal interference according to claim 4, characterized in that: The first power line is provided with a third conductor layer and a third insulation layer from the inside to the outside, the third conductor layer is a tinned copper wire layer, and the third insulation layer is a PVC plastic layer; the number of the first power lines is six, and they are twisted in pairs.
6. The cable structure for resisting signal interference according to claim 5, characterized in that: The second power lines are provided with a fourth conductor layer and a fourth insulation layer from the inside to the outside, the fourth conductor layer is a tinned copper wire layer, and the fourth insulation layer is a PVC plastic layer; the number of the second power lines is six.
7. The cable structure for resisting signal interference according to claim 6, characterized in that: The signal switch control line is provided with a fifth conductor layer and a fifth insulation layer from the inside to the outside, the fifth conductor layer is a tinned copper wire layer, and the fifth insulation layer is a PVC plastic layer; the number of the signal switch control lines is four.
8. The cable structure for resisting signal interference according to claim 7, characterized in that: The outer layer is a PVC plastic layer.