Photoelectric hybrid cable

Abstract

The utility model provides a photoelectric hybrid cable, which is characterized in that a sheath layer is sleeved on the periphery of a multi-tooth framework, the periphery of the multi-tooth framework comprises a plurality of slots, each slot is used for limiting and fixing corresponding optical fibers or wire pairs, at least one slot is provided with an optical fiber cable, at least one slot is provided with an adaptive wire pair, and the adaptive wire pair is arranged on the periphery of the multi-tooth framework. A single-core stranded wire pair of a single conductor is arranged in each of the rest slot positions; wherein the adaptive wire pair is formed by twisting a plurality of stranded wires in the same direction and with uniform pitch and uniform tension, the plurality of stranded wires are formed by twisting a plurality of solid copper conductors, and the electrical unit can be compatible with an XC end in a POF power supply mode while the electrical characteristic and the transmission characteristic of the electrical unit are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a photoelectric hybrid cable. Background Art

[0002] In the prior art, as network application scenarios become more and more complex, such as all-optical networks, Ethernet or all-optical Ethernet, or fiber to the home (Fibre To The Home, abbreviated as: FTTH) and fiber to the room (Fibre To Theroom, abbreviated as: FTTR), the required application scenarios are diverse, and simple electrical signal transmission cables or simple optical signal transmission cables cannot well meet the needs in complex scenarios. Therefore, it is necessary to combine electrical signal transmission cables and optical signal transmission cables to adapt to more application scenarios and needs, and considering the structural stability, when combining multiple electrical signal transmission cables and optical fiber cables, each cable needs to be individually limited in the sheath layer to prevent the cable from moving in the sheath layer and affecting signal transmission. On the other hand, in the existing commonly used power supply modes, such as the more common Power over Ethernet (POE) and Power over Fiber (POF), in the POF power supply mode, the tail end of the electrical signal transmission cable often needs to be docked with the corresponding XC terminal. The commonly used docking method usually requires clamping the electrical signal transmission cable with a clamp, and the existing single electrical signal transmission cable is usually two single solid copper wires twisted into a pair of wires. Direct clamping is often not stable enough and cannot guarantee the stability of fixation after clamping.

[0003] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in the field of this technology. Utility Model Content

[0004] The problem solved by the utility model is how to provide a photoelectric hybrid cable which is compatible with photoelectric hybrid transmission and can be stably connected with the existing XC terminal.

[0005] In a first aspect, a photoelectric hybrid cable is provided, comprising: a sheath layer 1, an optical fiber cable 2, a single-core twisted wire pair 3, an adapter wire pair 4 and a multi-tooth skeleton 5, wherein:

[0006] The sheath layer 1 is sleeved on the periphery of the multi-tooth frame 5;

[0007] The circumference of the multi-tooth skeleton 5 includes a plurality of slots;

[0008] At least one slot is provided with the optical fiber cable 2, at least one slot is provided with the adapter wire pair 4, and each of the remaining slots is provided with the single-core twisted wire pair 3;

[0009] The adapter wire pair 4 is formed by twisting two multi-strand twisted wires 41 .

[0010] Preferably, the adaptation wire pair 4 includes two multi-strand twisted conductors 41, and the two multi-strand twisted conductors 41 are provided with a twisting point every first preset pitch.

[0011] Preferably, the multi-strand twisted conductor 41 comprises a first insulating layer 411 and a preset number of first solid copper conductors 412, wherein:

[0012] The preset number of first solid copper conductors 412 are provided with a twisting point every second preset pitch;

[0013] The first insulating layer 411 is extruded around the periphery of a preset number of first solid copper conductors 412 after being twisted.

[0014] Preferably, the preset number is 7.

[0015] Preferably, the single-core twisted wire pair 3 includes two copper wires 31, and the two copper wires 31 are provided with a twisting point every third preset pitch;

[0016] The copper conductor 31 includes a second insulating layer 311 and a second solid copper conductor 312 , and the second insulating layer 311 is extruded around the second solid copper conductor 312 .

[0017] Preferably, the optical fiber cable 2 comprises an optical fiber core 21 and a tight jacket protective layer 22, wherein:

[0018] The tight jacket protective layer 22 is disposed on the periphery of the optical fiber core 21 .

[0019] Preferably, the multi-tooth skeleton 5 includes at least three first limiting teeth 51, at least two second limiting teeth 52 and a central backbone 53, wherein:

[0020] The three first limiting teeth 51 and the two second limiting teeth 52 are arranged around the central backbone 53, wherein the three first limiting teeth 51 are arranged adjacent to each other, and the two second limiting teeth 52 are arranged adjacent to each other;

[0021] There is a first preset angle between the first limiting tooth 51 and other adjacent first limiting teeth 51, there is a first preset angle between the first limiting tooth 51 and the adjacent second limiting tooth 52, and there is a second preset angle between the second limiting tooth 52 and another second limiting tooth 52;

[0022] Wherein, the first preset angle is greater than the second preset angle.

[0023] Preferably, a first type of slot 54 is formed between the first limiting tooth 51 and another adjacent first limiting tooth 51, a second type of slot 55 is formed between the first limiting tooth 51 and an adjacent second limiting tooth 52, and a third type of slot 56 is formed between the second limiting tooth 52 and another second limiting tooth 52;

[0024] The single-core twisted wire pair 3 or the adapter wire pair 4 is arranged in the first type slot 54 , the single-core twisted wire pair 3 or the adapter wire pair 4 is arranged in the second type slot 55 , and the optical fiber cable 2 is arranged in the third type slot 56 .

[0025] Preferably, a limiting platform 521 is provided at the end of the second limiting tooth 52, and the limiting platform 521 protrudes outward in both sides of the second limiting tooth 52. The limiting platform 521 limits the single-core twisted wire pair 3 or the adapter wire pair 4, and the limiting platform 521 also limits the optical fiber cable 2.

[0026] Preferably, a shielding layer 6 is further provided between the sheath layer 1 and the multi-tooth skeleton 5 .

[0027] The utility model provides an optoelectronic hybrid cable, wherein a sheath layer 1 is sleeved on the periphery of a multi-tooth skeleton 5, the circumference of the multi-tooth skeleton 5 includes a plurality of slots, each slot is used to limit and fix a corresponding optical fiber or a line pair, at least one slot is provided with an optical fiber cable 2, at least one slot is provided with an adapter line pair 4, and each of the remaining slots is provided with a single single-core twisted line pair 3; wherein the adapter line pair 4 is formed by two multi-strand twisted wires 41 twisted together, and the multi-strand twisted wire 41 is formed by a plurality of solid conductors twisted together, and each solid conductor is twisted with each other in a state of stable tension, which can greatly improve the stability during clamping, thereby ensuring that the provided optoelectronic hybrid cable can be suitable for the XC terminal in the POF power supply mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A cross-sectional view of an optoelectronic hybrid cable provided in an embodiment of the utility model;

[0030] Figure 2 A cross-sectional view of another optoelectronic hybrid cable provided in an embodiment of the utility model;

[0031] Figure 3 A cross-sectional view of another optical-electrical hybrid cable provided in an embodiment of the utility model;

[0032] Figure 4 A cross-sectional view of a multi-tooth skeleton of an optoelectronic hybrid cable provided in an embodiment of the utility model;

[0033] Figure 5 A cross-sectional view of another optoelectronic hybrid cable provided in an embodiment of the utility model;

[0034] Wherein, the accompanying drawings are marked as follows:

[0035] Sheath layer 1; optical fiber cable 2; optical fiber core 21; tight-fitting protective layer 22; single-core twisted wire pair 3; copper conductor 31; second insulating layer 311; second solid copper conductor 312; adapter wire pair 4; multi-strand twisted wire 41; first insulating layer 411; first solid copper conductor 412; multi-tooth skeleton 5; first limiting tooth 51; second limiting tooth 52; limiting platform 521; central backbone 53; first type slot 54; second type slot 55; third type slot 56; shielding layer 6. DETAILED DESCRIPTION

[0036] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0037] The terms "first", "second", etc. in this utility model are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0038] In the present invention, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, the term "coupling" can be a way of achieving electrical connection for signal transmission.

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] Embodiment 1:

[0041] In the prior art, as network application scenarios become more and more complex, such as all-optical networks, Ethernet or all-optical Ethernet, the required application scenarios are diverse, and simple electrical signal transmission cables or simple optical signal transmission cables cannot well meet the needs in complex scenarios. Therefore, it is necessary to combine electrical signal transmission cables and optical signal transmission cables to adapt to more application scenarios and needs, and considering the structural stability, when combining multiple strands of electrical signal transmission cables and optical fiber cables, it is necessary to limit each cable individually in the sheath layer to prevent the cable from moving in the sheath layer and affecting signal transmission. On the other hand, in the existing commonly used power supply modes, such as the more common POE and POF, the POF often needs to be docked with the corresponding XC terminal at the tail end. The commonly used docking method usually requires the electrical signal transmission cable to be clamped by a clamp, and the existing single electrical signal transmission cable is usually two single solid copper wires twisted into a pair of wires. Direct clamping is often not stable enough and cannot guarantee the stability of fixation after clamping.

[0042] This embodiment provides a hybrid optical-electrical cable, such as Figure 1 As shown, it includes: a sheath layer 1, an optical fiber cable 2, a single-core twisted wire pair 3, an adapter wire pair 4 and a multi-tooth skeleton 5, wherein:

[0043] The sheath layer 1 is sleeved on the periphery of the multi-tooth skeleton 5; the circumference of the multi-tooth skeleton 5 includes a plurality of slots; at least one slot is provided with the optical fiber cable 2, at least one slot is provided with the adapter wire pair 4, and each of the remaining slots is provided with a single single-core twisted wire pair 3; wherein the adapter wire pair 4 is formed by two multi-strand twisted conductors 41 twisted together.

[0044] In this embodiment, the optical fiber cable 2 is used to transmit optical signals, and the single-core twisted wire pair 3 and the adapter wire pair 4 are both used to transmit electrical signals, wherein the single-core twisted wire pair 3 can be a wire pair formed by twisting a single solid conductor insulated single wire; since the cable provided in this embodiment is an optoelectronic hybrid cable, it is necessary to ensure that the optical fiber cable 2 and the single-core twisted wire pair 3 can ensure the stability of the limit in the sheath layer 1 after being merged into the same sheath layer 1, so the multi-tooth skeleton 5 is introduced in this embodiment, and the circumference of the multi-tooth skeleton 5 includes a plurality of slots, each slot and the inner side wall of the corresponding sheath layer 1 constitute a limit area, and different cables are arranged in the corresponding limit area, thereby ensuring the overall stability of the optoelectronic hybrid cable; on the other hand, the adapter wire pair 4 is formed by two multi-strand twisted conductors 41 twisted in the same direction, with uniform pitch and uniform tension, and each of the multi-strand twisted conductors 41 contains multiple solid copper conductors, which ensures the electrical characteristics and transmission characteristics of the electrical unit while being compatible with the XC terminal in the POF power supply mode.

[0045] In this embodiment, the nominal outer diameter of the optical fiber cable 2 may be 0.9 mm.

[0046] In this embodiment, the adapter wire pair 4 can be used to transmit electrical signals, and the adapter wire pair 4 needs to be docked and clamped with the XC terminal in the POF power supply mode. Therefore, the adapter wire pair 4 in this embodiment is formed by twisting two multi-strand twisted wires 41 with each other, and in order to facilitate the subsequent docking and clamping with the XC terminal, the corresponding structure and twisting method of the multi-strand twisted wire 41 have the following designs:

[0047] like Figure 2 As shown, the adapter wire pair 4 includes two multi-strand twisted wires 41, the conductor in each multi-strand twisted wire 41 is formed by evenly spirally twisting a plurality of first solid copper conductors 412, and the two multi-strand twisted wires 41 are provided with a twisting point every first preset pitch.

[0048] like Figure 3 As shown, the multi-strand twisted conductor 41 includes a first insulating layer 411 and a preset number of first solid copper conductors 412, wherein:

[0049] The preset number of first solid copper conductors 412 are provided with a twisting point every second preset pitch; the first insulating layer 411 is extruded around the periphery of the preset number of first solid copper conductors 412 after twisting.

[0050] like Figure 2 and Figure 3As shown, in this embodiment, the twisting point can be the position where two multi-strand twisted wires 41 are twisted with each other, and the lengths of the two multi-strand twisted wires 41 can be consistent. In actual production, the two multi-strand twisted wires 41 are twisted once every first preset pitch to obtain the adaptation line pair 4, wherein the first preset pitch can be set by a person skilled in the art according to actual conditions; the length of each first solid copper conductor 412 in a single multi-strand twisted wire 41: the first solid copper conductor 412 in the center is the shortest, and the first solid copper conductors 412 in the periphery can be consistent. In actual production, a preset number of the first solid copper conductors 412 are twisted once every second preset pitch to obtain the multi-strand twisted conductor; in this embodiment, the preset number can be 7. When a multi-strand twisted wire 41 includes 7 first solid copper conductors 412, as shown in FIG. Figure 3 As shown, the seven first solid copper conductors 412 can be stacked according to a regular hexagonal outline to ensure structural stability.

[0051] The first insulating layer 411 is extruded on the periphery of the multi-strand twisted conductor to obtain the multi-strand twisted conductor 41. In this embodiment, the first preset pitch can be 12mm to 18mm, and the first preset pitch can be preferably a small pitch process within the range of 12mm to 18mm; the second preset pitch can be: 10 to 18mm. (Note: For the single-core twisted wire pair 4 and the adapter wire pair 3, the pitch range is between 10 and 18mm, and they are different from each other. The uniform twisting pitch can effectively reduce electromagnetic interference. At the same time, the scientific pitch design verified by theoretical calculation and actual verification is the guarantee of excellent transmission performance.

[0052] In this embodiment, the corresponding structure design of the single-core twisted wire pair 3 is as follows:

[0053] like Figure 2 As shown, the single-core twisted wire pair 3 includes two copper wires 31, and the two copper wires 31 are provided with a twisting point every third preset pitch;

[0054] like Figure 3 As shown, the copper wire 31 includes a second insulating layer 311 and a second solid copper conductor 312 , and the second insulating layer 311 is disposed on the periphery of the second solid copper conductor 312 .

[0055] In this embodiment, the third preset pitch may be 12 mm to 18 mm, and a small pitch process may be preferably selected within the range of 12 mm to 18 mm.

[0056] like Figure 2 and Figure 3As shown, in this embodiment, the second solid copper conductor 312 in the single copper wire 31 can be made of a high-purity solid copper conductor.

[0057] In this embodiment, the copper wire 31 in each single-core twisted wire pair 3 and the multi-strand twisted wire 41 in the adapter wire pair 4 need to be combined in a color spectrum order. In this embodiment, when there are four wire pairs, the combination of the insulation layers of the four wire pairs can be: a combination of white and white-blue, a combination of white and white-orange, a combination of white and white-green, and a combination of white and white-brown.

[0058] In this embodiment, the optical fiber cable 2 of the optical unit involves the following designs:

[0059] like Figure 3 As shown, the optical fiber cable 2 includes an optical fiber core 21 and a tight-fitting protective layer 22 , wherein the tight-fitting protective layer 22 is arranged on the periphery of the optical fiber core 21 .

[0060] In this embodiment, the tight jacket protective layer 22 may be an optical fiber buffer layer, and the optical fiber core 21 is preferably an anti-bending type optical fiber.

[0061] In this embodiment, the multi-tooth skeleton 5 needs to be able to support the sheath layer 1 from the inside and provide a limiting space for a corresponding number of electrical signal transmission cables and optical signal transmission cables to ensure the stability of the overall structure.

[0062] like Figure 4 As shown, the multi-tooth skeleton 5 includes at least three first limiting teeth 51, at least two second limiting teeth 52 and a central backbone 53, wherein:

[0063] like Figure 4 As shown, three of the first limiting teeth 51 and two of the second limiting teeth 52 are arranged around the central backbone 53, wherein the three first limiting teeth 51 are arranged adjacent to each other, and the two second limiting teeth 52 are arranged adjacent to each other; there is a first preset angle between the first limiting tooth 51 and other adjacent first limiting teeth 51, there is a first preset angle between the first limiting tooth 51 and the adjacent second limiting tooth 52, and there is a second preset angle between the second limiting tooth 52 and another second limiting tooth 52; wherein, the first preset angle is greater than the second preset angle.

[0064] In this embodiment, the first preset angle and the second preset angle are set by those skilled in the art according to actual conditions.

[0065] like Figure 4As shown, a first type of slot 54 is between the first limiting tooth 51 and other adjacent first limiting teeth 51, a second type of slot 55 is between the first limiting tooth 51 and the adjacent second limiting tooth 52, and a third type of slot 56 is between the second limiting tooth 52 and another adjacent second limiting tooth 52.

[0066] like Figure 4 As shown, the single-core twisted wire pair 3 or the adapter wire pair 4 is arranged in the first type slot 54 , the single-core twisted wire pair 3 or the adapter wire pair 4 is arranged in the second type slot 55 , and the optical fiber cable 2 is arranged in the third type slot 56 .

[0067] like Figure 4 As shown, a limiting platform 521 is provided at the end of the second limiting tooth 52, and the limiting platform 521 protrudes outward in both sides of the second limiting tooth 52. The limiting platform 521 limits the single-core twisted wire pair 3 or the adapter wire pair 4, and the limiting platform 521 also limits the optical fiber cable 2.

[0068] like Figure 5 As shown, a shielding layer 6 is further provided between the sheath layer 1 and the multi-tooth skeleton 5 .

[0069] The shielding layer 6 is used to isolate the internal single-core twisted wire pair 3, the adapter wire pair 4 and the optical fiber cable 2 from the outside world, preventing external signals from interfering with the internal cables, and also preventing the signals of the internal cables from radiating outward and affecting external signals.

[0070] In this embodiment, a tear rope may be further provided in the sheath layer 1. The tear rope is exposed from the rear end of the optoelectronic hybrid cable and is used to tear the sheath layer 1 to expose the cable core for terminal termination.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An optoelectronic hybrid cable, characterized in that: include: A sheath layer (1), an optical fiber cable (2), a single-core twisted wire pair (3), an adapter wire pair (4) and a multi-tooth skeleton (5), wherein: The sheath layer (1) is sleeved on the periphery of the multi-tooth frame (5); The circumference of the multi-toothed skeleton (5) includes a plurality of slots; At least one slot is provided with the optical fiber cable (2), at least one slot is provided with the adapter wire pair (4), and each of the remaining slots is provided with the single-core twisted wire pair (3); Wherein, the adapting wire pair (4) is formed by twisting two multi-strand twisted wires (41); The multi-tooth skeleton (5) comprises at least three first position-limiting teeth (51), at least two second position-limiting teeth (52) and a central backbone (53), wherein: The three first limiting teeth (51) and the two second limiting teeth (52) are arranged around the circumference of the central backbone (53), wherein the three first limiting teeth (51) are arranged adjacent to each other, and the two second limiting teeth (52) are arranged adjacent to each other; A first preset angle is formed between the first limiting tooth (51) and other adjacent first limiting teeth (51), a first preset angle is formed between the first limiting tooth (51) and an adjacent second limiting tooth (52), and a second preset angle is formed between the second limiting tooth (52) and another second limiting tooth (52); Wherein, the first preset angle is greater than the second preset angle; A first type of slot (54) is located between the first limiting tooth (51) and another adjacent first limiting tooth (51), a second type of slot (55) is located between the first limiting tooth (51) and an adjacent second limiting tooth (52), and a third type of slot (56) is located between the second limiting tooth (52) and another second limiting tooth (52); the adapter line pair (4) is arranged in the second type of slot (55).

2. The optical-electric hybrid cable according to claim 1, characterized in that: The adapter wire pair (4) comprises two multi-strand twisted conductors (41), wherein the two multi-strand twisted conductors (41) are provided with a twisting point every first preset pitch.

3. The optical-electric hybrid cable according to claim 2, characterized in that: The multi-strand twisted conductor (41) comprises a first insulating layer (411) and a preset number of first solid copper conductors (412), wherein: The preset number of first solid copper conductors (412) are provided with a twisting point every second preset pitch; The first insulating layer (411) is extruded around the periphery of a preset number of first solid copper conductors (412) that are twisted.

4. The optical-electric hybrid cable according to claim 3, characterized in that: The preset number is 7.

5. The optical-electric hybrid cable according to claim 1, characterized in that: The single-core twisted wire pair (3) comprises two copper wires (31), and the two copper wires (31) are provided with a twisting point every third preset pitch; The copper conductor (31) comprises a second insulating layer (311) and a second solid copper conductor (312), wherein the second insulating layer (311) is extruded on the periphery of the second solid copper conductor (312).

6. The optical-electric hybrid cable according to claim 1, characterized in that: The optical fiber cable (2) comprises an optical fiber core (21) and a tight jacket protective layer (22), wherein: The tight jacket protective layer (22) is arranged on the periphery of the optical fiber core (21).

7. The optical-electric hybrid cable according to claim 1, characterized in that: The single-core twisted wire pair (3) is arranged in the first type slot (54), and the optical fiber cable (2) is arranged in the third type slot (56).

8. The optical-electric hybrid cable according to claim 1, characterized in that: A limiting platform (521) is provided at the end of the second limiting tooth (52), and the limiting platform (521) protrudes outward in the two sides of the second limiting tooth (52). The limiting platform (521) limits the single-core twisted wire pair (3) or the adapter wire pair (4), and the limiting platform (521) also limits the optical fiber cable (2).

9. The optical-electric hybrid cable according to claim 1, characterized in that: A shielding layer (6) is also provided between the sheath layer (1) and the multi-tooth skeleton (5).

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