Combined cable
By employing a modular cable design with multi-layer electromagnetic shielding and insulation structures, the problems of electromagnetic interference and insulation performance degradation of traditional cables under complex electromagnetic environments and high-temperature conditions are solved, realizing the integration and stable transmission of multi-functional cables.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional cables suffer from electromagnetic interference, signal distortion, reduced insulation performance, and complex wiring when faced with complex electromagnetic environments and high temperatures, making them unable to meet the needs of various signal and power transmissions.
The cable adopts a modular design, including an outer sheath, a first insulation layer, a copper conductor, a winding layer, PTFE tape, and a Mylar layer. Combined with a cavity layout and thermal insulation medium, it forms multi-layer electromagnetic shielding and insulation protection through a triangular conductor arrangement, double-coverage design, and spiral winding structure, integrating different functional cable assemblies.
It effectively isolates thermal interference, enhances temperature stability, optimizes electromagnetic field distribution, ensures the purity of signal transmission and the safety of power transmission, and meets the needs of efficient and reliable connection under complex working conditions.
Smart Images
Figure CN224110019U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of power transmission, in particular to a combined cable. BACKGROUND
[0002] In the wide application scenarios of modern electrical and electronic equipment, as the key carrier of power transmission and signal transmission, the performance of the cable directly affects the stability and reliability of the system. The traditional cable has many limitations when facing complex working conditions and diversified transmission requirements. From the perspective of electromagnetic shielding, with the rapid increase in the number of electronic devices and the continuous increase in signal frequency, the electromagnetic environment is becoming more and more complex. The conventional cable only has simple shielding measures and is difficult to resist external strong electromagnetic interference, resulting in distortion, error code and other problems in the signal transmission process, which seriously affects the accuracy and stability of data transmission, especially in the fields of communication, medical electronic equipment and other fields with strict requirements on signal quality.
[0003] In terms of insulation and heat resistance, the insulation performance of the insulation material of the traditional cable is prone to decline under long-term high-voltage and large-current working conditions, and there is a risk of electric leakage. At the same time, when the cable is densely laid or used in high-temperature environments, the ordinary cable has poor heat dissipation, and the heat accumulation not only accelerates the aging of the cable, but also may cause fire accidents and other safety accidents, which cannot meet the use requirements of high-temperature industrial environments, underground comprehensive pipe galleries and other scenes.
[0004] For the related technologies in the above, the inventors find that the following defects exist: the existing cable has a single function, and different functional cable components are not integrated in one cable, resulting in the need to use multiple cables when multiple signals or power need to be transmitted, which occupies a large space and has complex wiring. The ordinary cable may lack effective electromagnetic shielding measures or the shielding structure design is unreasonable. CONTENT OF THE UTILITY MODEL
[0005] In order to solve the problems mentioned in the background art, the present application provides a combined cable.
[0006] The combined cable provided by the present application adopts the following technical scheme: a combined cable, comprising: a first cable component, the first cable component comprising, from outside to inside, an outer sheath layer, a first insulation layer, a copper conductor, a winding layer, a Teflon tape and a Mylar layer, the inner part of the outer sheath layer forming a containing space;
[0007] The second cable component and the third cable component are arranged side by side in the containing space and filled with thermal insulation material between the first cable component;
[0008] Through the above scheme, the thermal interference of different functional cables is effectively isolated by the cavity layout and the thermal insulation medium, and the temperature resistance stability of the overall structure is enhanced.
[0009] The first cable assembly internally contains a firewire conductor, a ground protection wire conductor and a zero wire conductor arranged in a triangular shape, wherein the firewire conductor and the ground protection wire conductor are wrapped by a mylar layer, and the three conductors are collectively covered by the mylar layer.
[0010] Through the above scheme, the triangular arrangement and double covering design are adopted to optimize the electromagnetic field distribution and strengthen the insulation protection between the conductors, thereby improving the power supply safety.
[0011] Optionally, the second cable assembly contains a main conductor and a shielding conductor collectively covered by a mylar layer, the main conductor is provided with a brown wire shell, and the shielding conductor is provided with a purple wire shell.
[0012] The third cable assembly contains an independently arranged weak signal conductor, which is provided with a yellow wire shell.
[0013] Through the above scheme, the independent cavity is combined with the color identification to ensure the purity of the weak signal transmission and avoid signal distortion caused by cross interference.
[0014] Optionally, the winding layer adopts a double helix structure to alternately wind on the outer layer of the copper conductor and extends to cover the outer surface of the zero wire conductor to form an electromagnetic shielding structure.
[0015] Through the above scheme, the innovative spiral winding process expands the shielding coverage range, and significantly reduces the influence of high-frequency interference on the zero wire system.
[0016] The four fluorine tape is a polytetrafluoroethylene insulation tape, which is covered on the outer layer of the cable assembly in a close-packed manner with a gap of less than 0.5mm.
[0017] Through the above scheme, the high-density covering forms a continuous insulation barrier, which can still maintain excellent dielectric properties under extreme temperature conditions.
[0018] Optionally, the shielding conductor contains at least three layers of tin-plated copper wire braiding layers, and the braiding density of each layer is 85%, 90% and 95% from inside to outside, and the braiding directions of adjacent braiding layers are cross arranged at an angle of 45°.
[0019] Through the above scheme, the gradient density and angle cross braiding technology work together to build a three-dimensional shielding network, and comprehensively improve the anti-interference ability.
[0020] Optionally, the heat insulation material is an aerogel composite layer containing alternately arranged silica aerogel layers and ceramic fiber cloth layers, and the thickness ratio of each layer is 1:1.2-1.5.
[0021] Through the above scheme, the composite heat insulation structure realizes efficient heat insulation in an ultra-thin space while maintaining material flexibility and structural integrity.
[0022] Optionally, the adjacent spiral pitch difference of the winding layer is 2-3mm, the tensile strength of the single spiral wire is not less than 500MPa, and the spiral angle is controlled in the range of 30°-45°.
[0023] Through the above scheme, the differential pitch and angle are optimized and designed, so that the mechanical strength is improved, the dynamic stress is dispersed, and the service life is prolonged.
[0024] Optionally, a separate shielding cavity is arranged outside the weak signal conductor, the cavity is composed of an aluminum foil layer and a silver-plated copper wire braid layer, and the aluminum foil layer is bonded at the lap joint by conductive adhesive, and the lap joint width is not less than 3mm.
[0025] Through the above scheme, the double shielding system is combined with the reliable lap joint process, a full-closed protection space is constructed for precise signal transmission, and the data integrity is ensured.
[0026] In summary, the present application has the following beneficial technical effects:
[0027] 1. The utility model discloses a cable, which comprises an outer layer, a first insulating layer, a copper conductor, a winding layer, a Teflon tape and a Mylar layer, and the winding layer and the copper conductor are matched with each other, so that the winding layer can shield the electromagnetic interference of the copper conductor through a double helix structure, thereby achieving the effect that the device can effectively block the electromagnetic interference of the screened electromagnetic interference through the electromagnetic shielding structure formed by the winding layer. Meanwhile, the Teflon tape is wrapped in a dense manner, thereby enhancing the insulation performance of the cable.
[0028] 2. The utility model discloses a cable, which comprises a first cable assembly, a second cable assembly, a third cable assembly and a heat insulation material, and the second and third cable assemblies are arranged side by side between the first cable assembly, so that the second and third cable assemblies can be arranged in the first cable assembly through the accommodating space, thereby achieving the effect that the device can integrate different function cables through the combined design. The heat insulation material can effectively prevent heat conduction between the cable assemblies. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 It is a whole structure schematic diagram in the embodiment of the present application.
[0030] Figure 2 It is a first cable assembly main body structure schematic diagram in the embodiment of the present application.
[0031] Figure 3 It is a first cable assembly local structure schematic diagram in the embodiment of the present application.
[0032] Fig. 1: first cable assembly; 101: outer sheath; 102: first insulation layer; 103: copper conductor; 104: mylar layer; 105: wrapping layer; 106: teflon tape; 107: hot conductor; 108: ground conductor; 109: neutral conductor; 2: second cable assembly; 3: third cable assembly. DETAILED DESCRIPTION
[0033] The following description will be made in conjunction with the accompanying drawings Figures 1-3 The application is further described in detail.
[0034] The embodiments of the present application disclose a combined cable.
[0035] Referring to Figure 1 A combined cable comprises a first cable assembly 1, which comprises, from outside to inside, an outer sheath 101, a first insulation layer 102, a copper conductor 103, a wrapping layer 105, a teflon tape 106, and a mylar layer 104, and the inner part of the outer sheath 101 forms a containing space;
[0036] A second cable assembly 2 and a third cable assembly 3 are arranged side by side in the containing space and filled with a thermal insulation material between the first cable assembly 1;
[0037] The third cable assembly 3 comprises an independent weak signal conductor, which is provided with a yellow wire shell.
[0038] Referring to Figure 2 and Figure 3 The first cable assembly 1 comprises a hot conductor 107, a ground conductor 108, and a neutral conductor 109 arranged in a triangular shape, wherein the hot conductor 107 and the ground conductor 108 are wrapped by the mylar layer 104, and the three conductors are covered by the mylar layer 104.
[0039] The second cable assembly 2 comprises a main conductor and a shielding conductor, which are covered by the mylar layer 104, the main conductor is provided with a brown wire shell, and the shielding conductor is provided with a purple wire shell;
[0040] The wrapping layer 105 is wrapped in a double helix structure on the outer layer of the copper conductor 103 and extends to cover the outer surface of the neutral conductor 109 to form an electromagnetic shielding structure;
[0041] The teflon tape 106 is a polytetrafluoroethylene insulation tape, which is wrapped on the outer layer of the cable assembly in a close-packed manner with a gap of less than 0.5 mm.
[0042] The shielding conductor comprises at least three layers of tinned copper wire braid, and the braid density of each layer is 85%, 90%, and 95% from inside to outside, and the braid directions of adjacent braid layers are arranged at an angle of 45°.
[0043] The thermal insulation material is an aerogel composite layer, comprising alternating silica aerogel layers and ceramic fiber cloth layers, and the thickness ratio of each layer is 1:1.2-1.5.
[0044] The adjacent helical pitch difference of the winding layer 105 is 2-3mm, the tensile strength of a single helical wire is not less than 500MPa, and the helix angle is controlled in the range of 30°-45°.
[0045] A separate shielding cavity is arranged around the weak signal conductor, which is composed of an aluminum foil layer and a silver-plated copper wire braid layer, wherein the aluminum foil layer is bonded by conductive adhesive at the lap joint, and the lap joint width is not less than 3mm.
[0046] It needs to be further explained that: the first cable assembly 1 forms a multi-layer protection and conductive structure through the cooperative arrangement of the outer sheath layer 101, the Mylar layer 104, the winding layer 105, the Teflon tape 106, etc. The internally arranged in a triangular shape fire wire conductor 107, ground protection wire conductor 108 and zero conductor 109 are entirely covered by the Mylar layer 104, and the electromagnetic shielding design of the winding layer 105 with a double helix structure on the outer surface of the copper conductor 103 and the zero conductor 109 can effectively block electromagnetic interference; the Teflon tape 106 is densely packed and covered in cooperation with the first insulating layer 102 to improve the cable insulation performance. At the same time, the accommodating space formed by the outer sheath layer 101 provides an integrated carrier for the second cable assembly 2 and the third cable assembly 3. Through cooperation with the thermal insulation material, the stability of the conductive structure is ensured while realizing the combination of multiple cables, meeting the protection needs of different signal and power transmission.
[0047] The implementation principle of the combined cable according to an embodiment of the present application is as follows:
[0048] Firstly, the first cable assembly 1 internally adopts a triangularly arranged fire wire conductor 107, ground protection wire conductor 108 and zero conductor 109, which are entirely covered by the Mylar layer 104 to form a stable conductive unit. The outer sheath layer 101 and the first insulating layer 102 constitute a basic protection system. The outer sheath layer 101 provides physical protection and forms an accommodating space, and the first insulating layer 102 isolates the conductor from the external environment. The copper conductor 103 serves as the conductive main body, and the Mylar layer 104 tightly wraps around it to achieve preliminary insulation, providing a safe and stable conductive channel for power transmission.
[0049] Secondly, the winding layer 105 is alternately wound in a double helix structure on the outer layer of the copper conductor 103 and extends to cover the outer surface of the zero conductor 109. Through the parameter design of the helix angle of 30°-45° and the pitch difference of 2-3mm, a three-dimensional electromagnetic shielding network is formed. The shielding conductor of the second cable assembly 2 adopts a three-layer tinned copper wire braid layer, which cooperates with the winding layer 105 to build a multi-layer shielding barrier from the conductor periphery to the signal transmission path, effectively reflecting and absorbing electromagnetic interference, and ensuring the stability of power and signal transmission.
[0050] Next, the four fluorine tape 106 is wrapped around the outer layer of the cable assembly in a close-packed manner with a gap of <0.5mm, forming double insulation protection with the first insulation layer 102, improving high voltage resistance and insulation level, and the heat insulation material adopts a silica aerogel composite layer with silica aerogel layers and ceramic fiber cloth layers alternating, the nano-porous structure of the silica aerogel layer hinders heat conduction, and the ceramic fiber cloth layer enhances mechanical strength, together preventing heat transfer between the cable assemblies, meeting the reliable operation in high temperature environment.
[0051] Next, the inner space of the outer layer 101 accommodates the first cable assembly 1, the second cable assembly 2, and the third cable assembly 3 in parallel, the main conductor of the second cable assembly 2 is responsible for strong current transmission, and the shielding conductor prevents signal crosstalk through an independent shielding cavity; the weak current signal conductor of the third cable assembly 3 is isolated from the strong current area through an independent shielding cavity, realizing the classified transmission of power, control signal, and weak current signal, and avoiding mutual interference of different types of signals.
[0052] Finally, the components form an organic whole through material properties and structural design: the outer layer 101 provides physical support and integration space, the Mylar layer 104 and the four fluorine tape 106 ensure insulation, the winding layer 105 and the shielding braid layer construct electromagnetic protection, and the aerogel composite layer realizes thermal management. When the cable is working, the fire wire / zero line / ground protection wire balances the current loop through the equilateral triangle structure, the main conductor and the shielding conductor of the second cable assembly 2 complete strong current transmission and anti-interference control, the weak current signal conductor of the third cable assembly 3 independently transmits low-power signals, and the heat insulation material ensures stable temperature in each area, finally realizing the multifunctional synergy of "power transmission + signal control + electromagnetic shielding + thermal protection", meeting the efficient and reliable connection demand in complex working conditions.
[0053] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.
Claims
1. A combined cable, characterized in that The utility model relates to a cable assembly, which comprises: a first cable assembly (1) comprising, from outside to inside, an outer sheath (101), a first insulating layer (102), a copper conductor (103), a winding layer (105), a Teflon tape (106) and a Mylar layer (104), wherein the inner part of the outer sheath (101) forms a containing space; a second cable assembly (2) and a third cable assembly (3) are arranged side by side in the containing space and are filled with a thermal insulation material between the first cable assembly (1); the first cable assembly (1) comprises, from outside to inside, a live wire conductor (107), a ground wire conductor (108) and a neutral wire conductor (109) arranged in a triangular shape, wherein the live wire conductor (107) and the ground wire conductor (108) are wrapped by the Mylar layer (104), and the three conductors are entirely covered by the Mylar layer (104).
2. A modular cable according to claim 1, wherein: the second cable assembly (2) comprises a main conductor and a shielding conductor entirely covered by the Mylar layer (104), wherein the main conductor is provided with a brown wire shell and the shielding conductor is provided with a purple wire shell; the third cable assembly (3) comprises an independent weak signal conductor provided with a yellow wire shell.
3. The modular cable of claim 1, wherein: the winding layer (105) is arranged in a double helix structure and is alternately wound on the outer layer of the copper conductor (103) and extends to cover the outer surface of the neutral wire conductor (109) to form an electromagnetic shielding structure; the Teflon tape (106) is a polytetrafluoroethylene insulating tape, which is arranged on the outer layer of the cable assembly in a close-packed manner with a gap of less than 0.5 mm.
4. The modular cable of claim 2, wherein: the shielding conductor comprises at least three layers of tinned copper wire braid, and the braid density of each layer is 85%, 90% and 95% from inside to outside, and the braid direction of adjacent braid layers is arranged at an angle of 45°.
5. The modular cable of claim 1, wherein: the thermal insulation material is an aerogel composite layer comprising alternating silica aerogel layers and ceramic fiber cloth layers, and the thickness ratio of each layer is 1:1.2-1.
5.
6. The modular cable of claim 3, wherein: the difference between adjacent helical pitches of the winding layer (105) is 2-3 mm, the tensile strength of a single helical wire is not less than 500 MPa, and the helical angle is controlled within the range of 30°-45°.
7. The modular cable of claim 2, wherein: an independent shielding cavity is arranged around the weak signal conductor, which is composed of an aluminum foil layer and a silver-plated copper wire braid layer, wherein the aluminum foil layer is adhered by conductive adhesive at the lap joint, and the lap joint width is not less than 3 mm.