Flat photoelectric composite cable

Abstract

The invention provides a flat photoelectric composite cable which comprises an optical unit, an electric unit and an outer sheath, the outer sheath comprises a first sheath, two second sheaths and two connecting parts, the two second sheaths are arranged on the two opposite sides of the first sheath at intervals in the first direction, and the two second sheaths are arranged on the two opposite sides of the first sheath at intervals in the second direction. The two second sheaths are respectively connected to the first sheath through the connecting parts; the optical unit is arranged in the first sheath, and the electric unit is arranged in at least one of the two second sheaths; wherein in the second direction, the outer diameter D2 of the second sheath is larger than or equal to the outer diameter D1 of the first sheath, the length L1 is limited by the connecting part, the second direction is perpendicular to the first direction, and the range of the ratio of L1 / D1 or L1 / D2 is 0.15-0.25.

Description

Technical Field

[0001] The present application relates to the technical field of optoelectronic composite cables, and in particular to a flat optoelectronic composite cable. Background Art

[0002] Flat optoelectronic composite cables generally distribute the optical unit and the electrical unit in a "one" shape to make the entire optoelectronic composite cable roughly flat. During use, this type of optoelectronic composite cable will cause cracks at the connection between the outer sheath of the optical unit and the electrical unit due to frequent bending, which affects the service life of the optoelectronic composite cable. Summary of the invention

[0003] The present application provides a flat optoelectronic composite cable to solve the problem in the prior art that the optoelectronic composite cable is prone to cracking due to frequent bending.

[0004] The present application provides a flat optoelectronic composite cable, comprising an optical unit, an electrical unit, and an outer sheath, wherein the outer sheath comprises a first sheath, two second sheaths, and two connecting portions, wherein along a first direction, the two second sheaths are respectively arranged at intervals on opposite sides of the first sheath, and the two second sheaths are respectively connected to the first sheath through one of the connecting portions; the optical unit is arranged in the first sheath, and the electrical unit is arranged in at least one of the two second sheaths; wherein, along the second direction, the outer diameter D2 of the second sheath is greater than or equal to the outer diameter D1 of the first sheath, the connecting portion is limited to a length L1, the second direction is perpendicular to the first direction, and the ratio of L1 / D1 or L1 / D2 is in the range of 0.15-0.25.

[0005] In a possible implementation manner, along the first direction, the connecting portion is limited to a length L2, and a ratio of L2 / D1 or L2 / D2 is in a range of 0.2-0.3.

[0006] In a possible implementation, the light unit includes: optical fiber; A tight cladding layer, which is wrapped around the outer peripheral surface of the optical fiber; The reinforcement layer is arranged around the outer circumference of the tight wrap layer, and the first sheath is wrapped around the outer circumference of the reinforcement layer.

[0007] In a possible implementation manner, the reinforcement layer includes a plurality of first reinforcement members, and the plurality of first reinforcement members are arranged around an outer circumferential surface of the tight envelope layer.

[0008] In a possible implementation manner, the flat optoelectronic composite cable further includes a plurality of second reinforcement members, and along the third direction, the plurality of second reinforcement members are passed through the first sheath, and the plurality of second reinforcement members are arranged around the axis of the first sheath; Wherein, the plurality of the second reinforcement members and the plurality of the first reinforcement members are staggeredly arranged around the axis of the first sheath.

[0009] In a possible implementation manner, an outer diameter of the second reinforcement member is smaller than an outer diameter of the first reinforcement member.

[0010] In a possible implementation manner, the second reinforcement member and the first reinforcement member are both aramid yarns.

[0011] In a possible implementation, the flat optoelectronic composite cable further includes a support member, the support member includes a central portion and a plurality of extension portions, the central portion is disposed on the outer circumference of the tight sheath, the plurality of extension portions are disposed around the outer circumference of the central portion, one end of the extension portion is connected to the outer circumference of the central portion, and the other end thereof abuts against the first sheath; Wherein, any two adjacent extension parts are arranged at intervals, and a receiving groove is formed between any two adjacent extension parts, and each of the receiving grooves receives at least one first reinforcement member.

[0012] In a possible implementation manner, the electrical unit includes: conductor; an insulating layer, which is wrapped around the outer circumference of the conductor, and the second sheath is wrapped around the outer circumference of the insulating layer; Wherein, the outer sheath is made of a transparent material, the electrical units are respectively arranged in the two second sheaths, and the insulating layers of the two electrical units have different colors.

[0013] In a possible implementation manner, the outer sheath includes a first sheath and a second sheath that are stacked, the optical unit and the electrical unit are disposed in the first sheath, and the second sheath is wrapped around an outer circumferential surface of the first sheath; Wherein, the second protective layer is configured as a foaming layer.

[0014] The flat optoelectronic composite cable of the present application has better bending performance in the first direction by spacing a first sheath with an optical unit and a second sheath with an electrical unit, and connecting the first sheath to the second sheath through a connecting portion. Compared with the method of directly connecting the first sheath to the second sheath, the bending performance of the entire flat optoelectronic composite cable is better and it is not easy to crack due to bending. In addition, the present application further improves the bending performance of the entire flat optoelectronic composite cable by limiting the size relationship between the first sheath, the second sheath, and the connecting portion, and prevents the first sheath and the optical unit therein from being subjected to excessive force, thereby avoiding the flat optoelectronic composite cable from breaking at the connecting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1FIG. 1 is a schematic structural diagram of a flat optoelectronic composite cable of the present application in one embodiment.

[0016] Figure 2 This is a schematic diagram of the internal structure of a first sheath in one embodiment of a flat optoelectronic composite cable of the present application.

[0017] Figure 3 This is a schematic structural diagram of an outer sheath of a flat optoelectronic composite cable of the present application in one embodiment.

[0018] Description of main component symbols: Flat optical fiber composite cable 100 First direction X The second direction Z The third direction Y Connecting cable A Light unit 10 Fiber 11 Tight cladding 12 Reinforcement layer 13 First reinforcement member 131 Electrical unit 20 Conductor 21 Insulation layer 22 Outer sheath 30 First sheath 31 Second sheath 32 Connecting part 33 First protective layer 301 Second protective layer 302 Second reinforcement member 40 Support member 50 Center 51 Extension 52 Storage tank 53 The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0019] The following description will refer to the accompanying drawings to more fully describe the content of the application. Shown in the accompanying drawings are exemplary embodiments of the application. However, the application can be implemented in many different forms and should not be construed as being limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the application thorough and complete, and to fully convey the ratio range of the application to those skilled in the art. Similar reference numerals represent identical or similar components.

[0020] The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include the plural forms. In addition, when used herein, "including" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the existence or addition of one or more other features, regions, integers, steps, operations, components and / or groups thereof.

[0021] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. In addition, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant technology and the content of this application, and will not be interpreted as an idealized or overly formal meaning.

[0022] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 and Figure 2 As shown, this embodiment provides a flat optical-electrical composite cable 100, comprising an optical unit 10, an electrical unit 20, and an outer sheath 30. The optical unit 10 and the electrical unit 20 are both disposed in the outer sheath 30, and the outer sheath 30 protects the optical unit 10 and the electrical unit 20.

[0024] For the convenience of subsequent reading, the present application introduces a first direction X, a second direction Z, and a third direction Y to describe the embodiments of the present application. The first direction X, the second direction Z, and the third direction Y may be three non-parallel linear directions in space; further, the first direction X, the second direction Z, and the third direction Y may be three mutually perpendicular directions in a three-dimensional coordinate system (three-dimensional Cartesian coordinate system). In the subsequent embodiments, the first direction X is the X-axis direction of the coordinate axis of the three-dimensional coordinate system, the second direction Z is the Z-axis direction of the coordinate axis of the three-dimensional coordinate system, and the third direction Y is the Y-axis direction of the coordinate axis of the three-dimensional coordinate system.

[0025] The outer sheath 30 includes a first sheath 31, two second sheaths 32, and two connecting parts 33. Along the first direction X, the two second sheaths 32 are arranged at intervals on opposite sides of the first sheath 31, and the two second sheaths 32 are connected to the first sheath 31 through a connecting part 33. The first sheath 31, the two second sheaths 32, and the two connecting parts 33 are connected in an integrally formed manner, so that the entire outer sheath 30 is directly formed as a whole on the periphery of the optical unit 10 and the electrical unit 20, which not only reduces the manufacturing difficulty of the outer sheath 30, but also reduces the probability of the outer sheath 30 being broken or damaged due to bending during use. In addition, the connection between the two connecting parts 33 and the first sheath 31 and the second sheath 32 is a curved surface with a smooth transition to avoid stress concentration at the connection position.

[0026] The optical unit 10 is arranged in the first sheath 31, and the electrical unit 20 is arranged in at least one of the two second sheaths 32. The optical unit 10 and the electrical unit 20 are arranged in different areas of the outer sheath 30, respectively, so as to avoid electromagnetic interference between the optical unit 10 and the electrical unit 20. The outer diameter D2 of the second sheath 32 is greater than or equal to the outer diameter D1 of the first sheath 31. Along the second direction Z, the connecting portion 33 is defined by a length L1, and the ratio of L1 / D1 or L1 / D2 is in the range of 0.15-0.25.

[0027] Thus, the flat optoelectronic composite cable 100 of the present application has better bending performance in the first direction X by arranging the first sheath 31 in which the optical unit 10 is installed and the second sheath 32 in which the electrical unit 20 is installed, and connecting the first sheath 31 and the second sheath 32 through the connecting portion 33. Compared with the method of directly connecting the first sheath 31 and the second sheath 32, the bending performance of the entire flat optoelectronic composite cable 100 is better and it is not easy to crack due to bending. In addition, the present application further improves the bending performance of the entire flat optoelectronic composite cable 100 by limiting the size relationship between the first sheath 31, the second sheath 32, and the connecting portion 33, and prevents the first sheath 31 and the optical unit 10 therein from being subjected to excessive force, thereby avoiding the flat optoelectronic composite cable 100 from breaking at the connecting portion 33.

[0028] Please combine again Figure 1 and Figure 2 In one embodiment, the cross-sections of the first sheath 31 and the second sheath 32 are both circular, and the cross-section of the connecting portion 33 is rectangular. The center points of the first sheath 31, the second sheath 32, and the connecting portion 33 are all located on the same straight line, and the direction of the straight line is parallel to the first direction X. Different colored identification strips can be respectively provided in the two second sheaths 32 to facilitate the distinction between the two second sheaths 32 and the electrical units 20 therein.

[0029] The outer diameter D2 of the second sheath 32 is greater than or equal to the outer diameter D1 of the first sheath 31, so that the external pressure on the entire flat optoelectronic composite cable 100 acts on the electrical units 20 on both sides with higher hardness as much as possible, thereby reducing the probability of the optical unit 10 located in the middle being subjected to force, thereby reducing the probability of the optical unit 10 located in the middle being broken.

[0030] The flat optoelectronic composite cable 100 has a defined first plane, which is set as the plane where the first direction X and the second direction Z are located. Along the third direction Y, the projection of the connecting portion 33 at the first plane is a rectangle, and the contours of the two opposite sides of the rectangular projection along the second direction Z are set as two connecting lines A. Along the second direction Z, the two connecting lines A are spaced and arranged in parallel, the direction where the connecting lines A are located is parallel to the first direction X, and the distance between the two connecting lines A is L1. The lengths of the two connecting lines A are the same, and the length of the connecting line A is set to L2.

[0031] In this embodiment, the ratio of L1 / D1 or L1 / D2 is in the range of 0.15-0.25, which can improve the bending performance of the connection portion 33 and avoid stress concentration and fracture at the connection portion 33.

[0032] Specifically, the ratio range of L1 / D1 or L1 / D2 can be 0.1, 0.15, 0.2, 0.25, etc. When the ratio of L1 / D1 or L1 / D2 is lower than the ratio range, the size of the connecting portion 33 in the second direction Z is too small, the strength of the connecting portion 33 is low and it is easy to break under the action of external force. When the ratio of L1 / D1 or L1 / D2 is higher than the ratio range, the size of the connecting portion 33 in the second direction Z is too large, the bending performance of the connecting portion 33 is poor, which is not conducive to the laying of the flat optoelectronic composite cable 100 in a limited space.

[0033] In this embodiment, the ratio of L2 / D1 or L2 / D2 is in the range of 0.2-0.3, which can further improve the bending performance of the connection portion 33 and avoid stress concentration and fracture at the connection portion 33.

[0034] Specifically, the ratio of L2 / D1 or L2 / D2 may be in the range of 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, etc. When the ratio of L2 / D1 or L2 / D2 is lower than the ratio range, the size of the connecting portion 33 in the first direction X is too small, and the stress on the second sheath 32 is transmitted to the first sheath 40 on the periphery of the optical unit 10 through the shorter connecting portion 33, and the probability of the optical unit 10 being damaged by the stress increases. When the ratio of L2 / D1 or L2 / D2 is higher than the ratio range, the size of the connecting portion 33 in the first direction X is too large, which is not conducive to laying the flat optical optical composite cable 100 in a limited space.

[0035] Specifically, the stress between the second sheath 32 and the first sheath 31 is transmitted in the first direction X through the connecting portion 33. When the length of the connecting portion 33 in the first direction X is longer, the stress release path can be increased to reduce the stress transmitted from the second sheath 32 to the first sheath 31, thereby reducing the risk of breakage of the optical unit 10 in the first sheath 31.

[0036] Please combine again Figure 1 and Figure 2 In one embodiment, the optical unit 10 includes an optical fiber 11, a tight cladding layer 12, and a reinforcement layer 13. The material of the tight cladding layer 12 can be at least one of polyethylene, polyvinyl chloride, polyvinylidene fluoride, and low smoke zero halogen (LSZH), and the tight cladding layer 12 is wrapped around the outer peripheral surface of the optical fiber 11. The reinforcement layer 13 is arranged around the outer peripheral surface of the tight cladding layer 12, and the first sheath 31 is wrapped around the outer peripheral surface of the reinforcement layer 13. A release agent is added between the first sheath 31 and the tight cladding layer 12 to reduce the adhesion of the first sheath 31 and the tight cladding layer 12 during the stripping process.

[0037] Specifically, the reinforcement layer 13 includes a plurality of first reinforcement members 131, and the plurality of first reinforcement members 131 are arranged around the outer peripheral surface of the tight sheath 12. The first reinforcement members 131 are yarns with good strength and bending properties, such as aramid yarn. The plurality of first reinforcement members 131 are arranged parallel to the axial direction of the first sheath 31 on the periphery of the tight sheath 12, and the number of the first reinforcement members 131 is selected according to actual design requirements. When the tensile performance requirements of the flat optoelectronic composite cable 100 are higher, the number of the first reinforcement members 131 is greater.

[0038] Furthermore, the flat optoelectronic composite cable 100 also includes a plurality of second reinforcement members 40. The second reinforcement members 40 are yarns such as aramid yarns having good strength and bending properties. Along the third direction Y, a plurality of second reinforcement members 40 are inserted into the first sheath 31, thereby improving the structural strength of the first sheath 31. The plurality of second reinforcement members 40 are arranged around the axis of the first sheath 31, and the plurality of second reinforcement members 40 are arranged parallel to the axial direction of the first sheath 31, and the number of the second reinforcement members 40 is selected according to actual design requirements. When the tensile performance requirements of the flat optoelectronic composite cable 100 are higher, the number of the second reinforcement members 40 is greater.

[0039] In this embodiment, the plurality of second reinforcement members 40 and the plurality of first reinforcement members 131 are staggeredly arranged around the axis of the first jacket 31 to improve the strength of the entire flat optoelectronic composite cable 100 and enhance the bending performance.

[0040] In this embodiment, the outer diameter of the second reinforcement member 40 is smaller than the outer diameter of the first reinforcement member 131 , so as to reduce the risk of rupture in the area of ​​the first sheath 31 where the second reinforcement member 40 is provided.

[0041] Please combine again Figure 1 and Figure 2 In one embodiment, the flat optoelectronic composite cable 100 further includes a support member 50, which is disposed in the first sheath 31. The support member 50 includes a central portion 51 and a plurality of extension portions 52, wherein the central portion 51 is wrapped around the outer circumference of the tight sheath 12, and the plurality of extension portions 52 are arranged at equal intervals around the outer circumference of the central portion 51. One end of the extension portion 52 is connected to the outer circumference of the central portion 51, and the other end thereof abuts against the first sheath 31. The shape of the extension portion 52 can be curved or straight, and its specific shape can be selected according to actual design requirements.

[0042] Among them, any two adjacent extension parts 52 are arranged at intervals, and a receiving groove 53 is formed between any two adjacent extension parts 52, and each receiving groove 53 accommodates at least one first reinforcement member 131, so that the structural strength of the first sheath 31 is improved by the setting of the support member 50, and the stability of the installation of the first reinforcement member 131 is improved by the support member 50, so as to avoid the first reinforcement member 131 from being misaligned.

[0043] Please combine again Figure 1 and Figure 2 In one embodiment, the electrical unit 20 includes a conductor 21 and an insulating layer 22. The conductor 21 is a metal wire with a conductive function such as a copper wire or an aluminum wire. The insulating layer 22 is wrapped around the outer circumference of the conductor 21, and the second sheath 32 is wrapped around the outer circumference of the insulating layer 22.

[0044] The insulating layer 22 may be made of low smoke zero halogen (LSZH) insulating material or foaming material to improve buffering performance. The insulating layers 22 of the two electrical units 20 may be made of different colors such as red and blue, and the outer sheath 30 may be made of transparent PVC material with a hardness of about 50P, so that there is no need to set a marking strip in the outer sheath 30 and the insulation performance can be improved.

[0045] Please combine again Figures 1 to 3 In one embodiment, the outer sheath 30 includes a first protective layer 301 and a second protective layer 302 which are stacked. The optical unit 10 and the electrical unit 20 are arranged in the first protective layer 301, and the second protective layer 302 is wrapped around the outer peripheral surface of the first protective layer 301. The second protective layer 302 can be a foaming layer to play a buffering role, and its foaming degree is more than 50%.

[0046] Optionally, the second sheath 32 and the first sheath 31 may include a first sheath 301 and a second sheath 302 which are stacked, the connecting portion 33 may only include the second sheath 302, and the first sheath 31, the second sheath 32 and the second sheath 302 at the connecting portion 33 may be integrally formed. This design can improve the bending performance of the connecting portion 33.

[0047] The following is an illustration of the beneficial effects of this application using actual product tests: Embodiment 1: The flat optoelectronic composite cable 100 of this embodiment includes an optical unit 10, an electrical unit 20, and an outer sheath 30. The outer sheath 30 includes a first sheath 31, two second sheaths 32, and two connecting parts 33. An electrical unit 20 is provided in each of the two second sheaths 32, and an optical unit 10 is provided in the first sheath 31. The outer diameter D2 of the second sheath 32 is 8 mm, the outer diameter D1 of the first sheath 31 is 6 mm, the length L1 of the connecting part 33 is 1.2 mm, and the length L2 of the connecting line A is 1.7 mm.

[0048] According to the GB / T 7424.21 test standard for optical fiber composite cables, the flat optical fiber composite cable 100 of Example 1 was subjected to a repeated bending test for bending performance. The flat optical fiber composite cable 100 was placed in a temperature environment of 23°C, and the load during the test was 20N. The diameter of the experimental mandrel should not be greater than 10 times the length of the short axis. The number of cycles was 25 times. The residual additional attenuation of the optical fiber 11 tested by the flat optical fiber composite cable 100 was ≤0.1dB@1550nm. After repeated bending tests, the load was 250N, the mandrel radius was not greater than the dynamic bending radius of the flat optical fiber composite cable 100, and the cycle was 30 times. At 1550nm, the additional attenuation of the optical fiber 11 was not greater than 0.4dB. Visual inspection showed that the flat optical fiber composite cable 100 was not damaged. Under a load of 250N, the twisted length was 1m and twisted 90°. After 10 times, the optical fiber 11 had no obvious additional attenuation and returned to its original position. There was no obvious residual additional attenuation and the outer sheath 30 was not cracked.

[0049] Embodiment 2: The flat optoelectronic composite cable 100 of this embodiment is additionally provided with a support member 50 on the basis of Embodiment 1. The support member 50 has eight receiving grooves 53. Each receiving groove 53 receives a first reinforcement member 131. The eight first reinforcement members 131 and the eight second reinforcement members 40 are alternately arranged, and both the first reinforcement members 131 and the second reinforcement members 40 are made of aramid yarn.

[0050] According to the test method and test conditions of Example 1, the flat optoelectronic composite cable 100 tested the residual additional attenuation of the optical fiber 11 to be 0.005db@1550nm, and the repeated bending test core shaft diameter 50mm tested the residual additional attenuation of the optical fiber 11 to be 0.148db@1550nm, and the flat optoelectronic composite cable 100 was not cracked as a whole. The flat optoelectronic composite cable 100 was torsionally twisted, the optical fiber 11 had an additional attenuation of 0.028db, the residual additional attenuation was 0.006db, and the outer sheath 30 was not cracked. The additional attenuation of the optical fiber 11 was ≤0.030db, which was an uncertain value and was determined to be no obvious additional attenuation.

[0051] Comparative Example 1: The flat optoelectronic composite cable 100 of this embodiment is the same as that of Embodiment 1, but the outer diameter D2 of the second sheath 32 is 8 mm, the outer diameter D1 of the first sheath 31 is 6 mm, the length L1 of the connecting portion 33 is 0.8 mm, and the length L2 of the connecting line A is 1.1 mm.

[0052] According to the test method and test conditions of Example 1, the residual additional attenuation of the optical fiber 11 tested by the flat optoelectronic composite cable 100 is 0.005@1550nm. The residual additional attenuation of the optical fiber 11 tested by the repeated bending test with a core shaft diameter of 50mm is 0.148@1550nm, and the flat optoelectronic composite cable 100 is not cracked as a whole. The flat optoelectronic composite cable 100 is torsionally twisted, the optical fiber 11 has an additional attenuation of 0.028db, the residual additional attenuation is 0.006db, and the outer sheath 30 is not cracked. The additional attenuation of the optical fiber 11 is ≤0.030db, which is uncertain and is judged to be without obvious additional attenuation.

[0053] In the above, the specific embodiments of the present application are described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various changes and substitutions may be made to the specific embodiments of the present application without departing from the ratio range of the present application. These changes and substitutions all fall within the ratio range defined in the present application.

Claims

1. A flat optoelectronic composite cable, comprising an optical unit and an electrical unit; characterized in that: The flat optoelectronic composite cable also includes: An outer sheath, comprising a first sheath, two second sheaths, and two connecting parts, wherein the two second sheaths are arranged at intervals on opposite sides of the first sheath along a first direction, and the two second sheaths are connected to the first sheath through one of the connecting parts respectively; the optical unit is arranged in the first sheath, and the electrical unit is arranged in at least one of the two second sheaths; Wherein, along the second direction, the outer diameter D2 of the second sheath is greater than or equal to the outer diameter D1 of the first sheath, the connecting portion is limited to a length L1, the second direction is perpendicular to the first direction, and the ratio of L1 / D1 or L1 / D2 is in the range of 0.15-0.

25.

2. The flat optical-electric composite cable according to claim 1, characterized in that: Along the first direction, the connecting portion defines a length L2, and a ratio of L2 / D1 or L2 / D2 is in the range of 0.2-0.

3.

3. The flat photoelectric composite cable according to claim 1, characterized in that: The light unit comprises: optical fiber; A tight cladding layer, which is wrapped around the outer peripheral surface of the optical fiber; The reinforcement layer is arranged around the outer circumference of the tight wrap layer, and the first sheath is wrapped around the outer circumference of the reinforcement layer.

4. The flat optical-electric composite cable according to claim 3, characterized in that: The reinforcement layer includes a plurality of first reinforcement members, and the plurality of first reinforcement members are arranged around the outer peripheral surface of the tight envelope.

5. The flat optical-electric composite cable according to claim 4, characterized in that: The flat optoelectronic composite cable further includes a plurality of second reinforcement members, wherein the plurality of second reinforcement members are inserted through the first sheath along the third direction, and the plurality of second reinforcement members are arranged around the axis of the first sheath; Wherein, the plurality of the second reinforcement members and the plurality of the first reinforcement members are staggeredly arranged around the axis of the first sheath.

6. The flat photoelectric composite cable according to claim 5, characterized in that: The outer diameter of the second reinforcement member is smaller than the outer diameter of the first reinforcement member.

7. The flat photoelectric composite cable according to claim 5, characterized in that: The second reinforcement member and the first reinforcement member are both aramid yarns.

8. The flat optical-electric composite cable according to claim 4, characterized in that: The flat optoelectronic composite cable also includes a support member, the support member includes a central portion and a plurality of extension portions, the central portion is disposed on the outer circumference of the tight sheath, the plurality of extension portions are disposed around the outer circumference of the central portion, one end of the extension portion is connected to the outer circumference of the central portion, and the other end thereof abuts against the first sheath; Wherein, any two adjacent extension parts are arranged at intervals, and a receiving groove is formed between any two adjacent extension parts, and each of the receiving grooves receives at least one first reinforcement member.

9. The flat photoelectric composite cable according to claim 1, characterized in that: The electrical unit comprises: conductor; an insulating layer, which is wrapped around the outer circumference of the conductor, and the second sheath is wrapped around the outer circumference of the insulating layer; Wherein, the outer sheath is made of a transparent material, the electrical units are respectively arranged in the two second sheaths, and the insulating layers of the two electrical units have different colors.

10. The flat optical-electric composite cable according to claim 1, characterized in that: The outer sheath comprises a first sheath and a second sheath which are stacked, the optical unit and the electrical unit are arranged in the first sheath, and the second sheath is wrapped around the outer circumference of the first sheath; Wherein, the second protective layer is configured as a foaming layer.

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