A cable with a butterfly-shaped introduction unit

Abstract

The present invention belongs to the technical field of optical cables, and in particular relates to a cable with a butterfly-shaped introduction unit, which has an outer sheath and an inner sheath. The outer sheath is located outside the inner sheath, and at least two butterfly-shaped introduced optical cable distribution layers are provided between the outer sheath and the inner sheath, and are layer-by-layer clamped between the inner sheath and the butterfly-shaped introduced optical cable distribution layer; the present invention has the beneficial effects of simple structure, easy expansion, firm fixation, light weight of the butterfly-shaped introduction unit, low cost, inner sheath, wide application range, good mechanical properties, etc.

Description

Technical Field

[0001] The present invention belongs to the field of optoelectronic technology, and particularly relates to a cable with a butterfly introduction unit. Background Art

[0002] Due to the booming development of China's manufacturing industry, the production of industrial enterprises is inseparable from the supply of electricity, and the demand for cables is very large. However, at present, due to the increasingly tense laying resources and the diversification of cable uses, a cable is required to be able to meet multiple functions and be convenient for laying.

[0003] In the prior art, for example, CN118655667A discloses a multi-core butterfly introduction optical cable, which has at least three butterfly units. The butterfly unit consists of a butterfly unit sheath, two strengthening members, two groups of optical fiber groups, a protective sleeve and a rib. The rib is located directly above the butterfly unit sheath, the protective sleeve is located directly above the rib, the two strengthening members are located in the butterfly unit sheath on both sides of the rib, the optical fiber group is located between the rib and the corresponding strengthening member, a buffer groove is provided between the protective sleeve and the butterfly unit sheath, all the butterfly units are connected end to end through connecting members, and a shaping frame is formed between all the butterfly units.

[0004] The above prior art has the following deficiencies: 1. The butterfly introduction unit cannot be expanded in multiple layers; 2. The application range is narrow; 3. The laying is relatively inconvenient. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to disclose a cable with a butterfly introduction unit, which is realized by the following technical solutions.

[0006] A cable with a butterfly introduction unit has an outer sheath and an inner sheath. The outer sheath is located outside the inner sheath. The inner sheath consists of an inner sheath main body, at least three second connecting members and second clamping heads with the same number as the second connecting members. An inner cavity is provided inside the inner sheath main body, and at least one electrical unit is provided inside the inner cavity;

[0007] In the same cross-section, all the second connecting members are evenly distributed on the outer periphery of the inner sheath main body. One end of the second connecting member is connected to the outer side wall of the inner sheath main body, and the other end of the second connecting member is connected to the second clamping head;

[0008] At least two butterfly introduction optical cable distribution layers are provided between the outer sheath and the inner sheath. The butterfly introduction optical cable distribution layer consists of butterfly introduction units with the same number as the second connecting members.

[0009] The butterfly-shaped entrance units in the same distribution layer of the butterfly-shaped entrance optical cable form a circle, and a second clamping groove is formed between two adjacent butterfly-shaped entrance units. A first clamping groove is provided on the butterfly-shaped entrance unit. The second clamping groove of the innermost distribution layer of the butterfly-shaped entrance optical cable is clamped with the corresponding second clamping head. There are dumbbell-shaped bodies between two adjacent distribution layers of the butterfly-shaped entrance optical cable. The number of dumbbell-shaped bodies is the same as that of the second clamping heads. The dumbbell-shaped body is composed of two first clamping heads and a first connecting piece. The two first clamping heads are respectively connected to one end of the first connecting piece. One first clamping head of the dumbbell-shaped body is inserted into the corresponding first clamping groove of the adjacent inner distribution layer of the butterfly-shaped entrance optical cable, and the other first clamping head of the dumbbell-shaped body is inserted into the corresponding second clamping groove of the adjacent outer distribution layer of the butterfly-shaped entrance optical cable.

[0010] For a cable with butterfly-shaped entrance units as described above, the butterfly-shaped entrance unit is composed of a butterfly-shaped entrance unit body, two first strengthening members, and two optical fibers. The two first strengthening members are located inside the butterfly-shaped entrance unit body. The first clamping groove is located inside the butterfly-shaped entrance unit body between the two first strengthening members. A first clamping interface is provided above the first clamping groove. The lower end of the first clamping interface is communicated with the first clamping groove, and the upper end of the first clamping interface is communicated with the outside. The two optical fibers are respectively located inside the butterfly-shaped entrance unit body on both sides of the first clamping groove. The side walls on the left and right sides of the butterfly-shaped entrance unit body have arc-shaped side walls, a first side wall, and a second side wall. The first side wall is located below the second side wall, and the arc-shaped side wall is located between the first side wall and the second side wall. The arc-shaped side wall is recessed towards the middle of the butterfly-shaped entrance unit;

[0011] Two adjacent second side walls are attached to each other, and a second clamping interface is formed between two adjacent first side walls. The second clamping groove is composed of two adjacent arc-shaped side walls;

[0012] The butterfly-shaped entrance units of the innermost distribution layer of the butterfly-shaped entrance optical cable are located between the corresponding two second clamping heads of the inner sheath. The second clamping head is attached to the corresponding two arc-shaped side walls, and the second connecting piece is attached to the corresponding second clamping interface;

[0013] Between two adjacent butterfly-shaped entrance units, the first clamping head is attached to the corresponding first clamping groove of the inner distribution layer of the butterfly-shaped entrance optical cable, the first clamping head is attached to the corresponding second clamping groove of the inner distribution layer of the butterfly-shaped entrance optical cable, and the first connecting piece is attached to the corresponding first clamping interface and the corresponding second clamping interface.

[0014] For a cable with butterfly-shaped entrance units as described above, signal conductors are provided inside the first clamping head.

[0015] For a cable with butterfly-shaped entrance units as described above, a second strengthening member is provided inside the second clamping head.

[0016] A cable with a butterfly-shaped introduction unit as described above, the distance between the axis of the inner sheath main body and the axis of the connecting line of two adjacent second card joints is greater than the outer diameter of the inner sheath main body.

[0017] A cable with a butterfly-shaped introduction unit as described above, the material of the second strengthening member is phosphated steel wire.

[0018] A cable with a butterfly-shaped introduction unit as described above, the electrical unit is composed of a conductor and an insulating layer extruded outside the conductor.

[0019] A cable with a butterfly-shaped introduction unit as described above, the optical fiber is a single-mode optical fiber or a multi-mode optical fiber.

[0020] A cable with a butterfly-shaped introduction unit as described above, the material of the butterfly-shaped introduction unit main body is flame-retardant polyolefin.

[0021] A cable with a butterfly-shaped introduction unit as described above, the material of the outer sheath is high-density polyethylene.

[0022] A cable with a butterfly-shaped introduction unit as described above, the material of the inner sheath is high-density polyethylene.

[0023] A cable with a butterfly-shaped introduction unit as described above, the material of the dumbbell body is flame-retardant polyolefin.

[0024] A cable with a butterfly-shaped introduction unit as described above, the material of the first strengthening member is phosphated steel wire.

[0025] The present invention has the following beneficial effects:

[0026] 1. The butterfly-shaped introduction optical cable distribution layer can expand layer by layer outward, and adjacent butterfly-shaped introduction optical cable distribution layers are fixed to each other, and adjacent butterfly-shaped introduction units are fixed to each other, and the structure is round and regular.

[0027] 2. The butterfly-shaped introduction unit is provided with a first card slot and a first card interface, and the arc-shaped side wall is recessed inward, which greatly saves materials and reduces the weight of a single butterfly-shaped introduction unit.

[0028] 3. The inner sheath, the butterfly-shaped introduction unit and the dumbbell body can all be wired separately.

[0029] 4. It can transmit electric energy, electrical signals and optical signals, and has a wide range of uses.

[0030] 5. The first strengthening member and the second strengthening member are distributed in layers around the inner sheath main body, the force is more uniform, and multiple first strengthening members and second strengthening members together provide greater tensile resistance and better mechanical properties.

[0031] 6. When the butterfly-shaped introduction unit is wired separately, it can be clamped to the overhead rope through the first card slot and the first card interface, which is convenient for wiring.

[0032] 7. When the butterfly lead-in unit and the dumbbell body are combined for wiring, one first card connector of the dumbbell body is snapped into the first card slot of the butterfly lead-in unit, and the other first card connector can be used as a suspension wire, enabling self-supporting aerial wiring.

[0033] 8. When the inner sheath is wired alone in the air, it can also be self-supporting aerial wiring.

[0034] 9. When the inner sheath is wired on the ground, since the distance from the axis of the inner sheath main body to the line connecting the axes of two adjacent second card connectors is greater than the outer diameter of the inner sheath main body, the inner sheath main body does not contact the ground, preventing the inner sheath main body from being repeatedly rubbed and damaged by the ground, and when under pressure, preventing the inner sheath from being damaged by extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a perspective structural view of a section of Embodiment 1 of the present invention.

[0036] Figure 2 is a front view of Embodiment 1 of the present invention.

[0037] Figure 3 is a perspective structural view of a section of the butterfly lead-in unit of Embodiment 1 of the present invention.

[0038] Figure 4 is a front view of the butterfly lead-in unit of Embodiment 1 of the present invention.

[0039] Figure 5 is a perspective structural view of the inner sheath of Embodiment 1 of the present invention.

[0040] Figure 6 is a front view of the inner sheath of Embodiment 1 of the present invention.

[0041] Figure 7 is a front view of the dumbbell body of Embodiment 1 of the present invention.

[0042] Figure 8 is a front view of Embodiment 2 of the present invention.

[0043] Figure 9 is a perspective structural view of a section of the dumbbell body of Embodiment 2 of the present invention.

[0044] Figure 10 is a front view of Embodiment 3 of the present invention.

[0045] Figure 11 is a perspective structural view of the inner sheath of Embodiment 3 of the present invention.

[0046] In the figure: 1. Outer protective layer, 2. Butterfly-shaped lead-in unit, 21. Butterfly-shaped lead-in unit body, 22. First reinforcing member, 23. First clamping groove, 231. First clamping port, 24. Optical fiber, 25. Arc-shaped side wall, 26. First side wall, 27. Second side wall, 3. Inner protective layer, 31. Inner protective layer body, 32. Inner cavity, 33. Second connecting member, 34. Second clamping head, 35. Second reinforcing member, 4. Electrical unit, 5. Dumbbell body, 51. First clamping head, 52. First connecting member, 53. Signal wire. Detailed implementation manner

[0047] Example 1: As Figures 1 to 7 , a cable with a butterfly-shaped lead-in unit, having an outer protective layer 1 and an inner protective layer 3, the outer protective layer 1 is located outside the inner protective layer 3, the inner protective layer 3 is composed of an inner protective layer body 31, six second connecting members 33 and six second clamping heads 34, an inner cavity 32 is provided inside the inner protective layer body 31, and at least one electrical unit 4 is provided in the inner cavity 32;

[0048] In the same cross-section, the six second connecting members 33 are evenly distributed on the outer periphery of the inner protective layer body 31, one end of the second connecting member 33 is connected to the outer side wall of the inner protective layer body 31, and the other end of the second connecting member 33 is connected to the second clamping head 34;

[0049] Two butterfly-shaped lead-in optical cable distribution layers are provided between the outer protective layer 1 and the inner protective layer 3, the butterfly-shaped lead-in optical cable distribution layer is composed of six butterfly-shaped lead-in units 2, the butterfly-shaped lead-in unit 2 is composed of a butterfly-shaped lead-in unit body 21, two first reinforcing members 22 and two optical fibers 24, the two first reinforcing members 22 are located inside the butterfly-shaped lead-in unit body 21, a first clamping groove 23 is provided inside the butterfly-shaped lead-in unit body 21 between the two first reinforcing members 22, a first clamping port 231 is provided above the first clamping groove 23, the lower end of the first clamping port 231 is communicated with the first clamping groove 23, the upper end of the first clamping port 231 is communicated with the outside, the two optical fibers 24 are respectively located inside the butterfly-shaped lead-in unit body 21 on both sides of the first clamping groove 23, the side walls on the left and right sides of the butterfly-shaped lead-in unit body 21 have an arc-shaped side wall 25, a first side wall 26 and a second side wall 27, the first side wall 26 is located below the second side wall 27, the arc-shaped side wall 25 is located between the first side wall 26 and the second side wall 27, and the arc-shaped side wall 25 is recessed towards the middle of the butterfly-shaped lead-in unit 2;

[0050] The six butterfly-shaped lead-in units 2 in the same butterfly-shaped lead-in optical cable distribution layer form a circle, the adjacent two arc-shaped side walls 25 form a second clamping groove, the adjacent two second side walls 27 are attached, and the adjacent two first side walls 26 form a second clamping port;

[0051] The butterfly-shaped fiber optic cable distribution unit 2 on the inner side is located between two corresponding second card joints 34 of the inner sheath 3. The second card joint 34 is snapped into the corresponding second card slot, the second card joint 34 fits against the corresponding two arc-shaped side walls 25, and the second connecting member 33 fits against the corresponding second card interface;

[0052] Six dumbbell bodies 5 are provided between two butterfly-shaped fiber optic cable distribution layers. The dumbbell body 5 is composed of two first card joints 51 and a first connecting member 52. The two first card joints 51 are respectively connected to one end of the first connecting member 52;

[0053] One first card joint 51 of the dumbbell body 5 is snapped into the corresponding first card slot 23 of the inner butterfly-shaped fiber optic cable distribution layer. The first card joint 51 fits against the corresponding first card slot 23. The other first card joint 51 of the dumbbell body 5 is snapped into the corresponding second card slot of the outer butterfly-shaped fiber optic cable distribution layer. The first card joint 51 fits against the corresponding second card slot, and the first connecting member 52 fits against the corresponding first card interface 231 and the corresponding second card interface.

[0054] Embodiment 2: As Figure 8 and Figure 9 and referring to Figures 3 to 6 A cable with a butterfly-shaped fiber optic cable distribution unit has an outer sheath 1 and an inner sheath 3. The outer sheath 1 is located outside the inner sheath 3. The inner sheath 3 is composed of an inner sheath main body 31, six second connecting members 33, and six second card joints 34. An inner cavity 32 is provided inside the inner sheath main body 31, and at least one electrical unit 4 is provided in the inner cavity 32;

[0055] In the same cross-section, the six second connecting members 33 are evenly distributed on the outer periphery of the inner sheath main body 31. One end of the second connecting member 33 is connected to the outer side wall of the inner sheath main body 31, and the other end of the second connecting member 33 is connected to the second card joint 34;

[0056] There are two butterfly lead-in optical cable distribution layers between the outer protective layer 1 and the inner protective layer 3. The butterfly lead-in optical cable distribution layer is composed of six butterfly lead-in units 2. The butterfly lead-in unit 2 is composed of a butterfly lead-in unit body 21, two first reinforcing members 22 and two optical fibers 24. The two first reinforcing members 22 are located inside the butterfly lead-in unit body 21. There is a first clamping groove 23 inside the butterfly lead-in unit body 21 between the two first reinforcing members 22. There is a first clamping port 231 above the first clamping groove 23. The lower end of the first clamping port 231 communicates with the first clamping groove 23, and the upper end of the first clamping port 231 communicates with the outside. The two optical fibers 24 are respectively located inside the butterfly lead-in unit body 21 on both sides of the first clamping groove 23. The side walls on the left and right sides of the butterfly lead-in unit body 21 have arc-shaped side walls 25, first side walls 26 and second side walls 27. The first side wall 26 is located below the second side wall 27, and the arc-shaped side wall 25 is located between the first side wall 26 and the second side wall 27. The arc-shaped side wall 25 is recessed towards the middle of the butterfly lead-in unit 2;

[0057] The six butterfly lead-in units 2 of the same butterfly lead-in optical cable distribution layer form a circle. The adjacent two arc-shaped side walls 25 form a second clamping groove, the adjacent two second side walls 27 are in contact, and the adjacent two first side walls 26 form a second clamping port;

[0058] The butterfly lead-in units 2 of the inner butterfly lead-in optical cable distribution layer are located between the corresponding two second clamping heads 34 of the inner protective layer 3. The second clamping heads 34 are clamped into the corresponding second clamping grooves, the second clamping heads 34 are in contact with the corresponding two arc-shaped side walls 25, and the second connecting members 33 are in contact with the corresponding second clamping ports;

[0059] There are six dumbbell bodies 5 between the two butterfly lead-in optical cable distribution layers. The dumbbell body 5 is composed of two first clamping heads 51 and a first connecting member 52. The two first clamping heads 51 are respectively connected to one end of the first connecting member 52. A signal wire 53 is provided inside the first clamping head 51;

[0060] One first clamping head 51 of the dumbbell body 5 is clamped into the corresponding first clamping groove 23 of the inner butterfly lead-in optical cable distribution layer. The first clamping head 51 is in contact with the corresponding first clamping groove 23. The other first clamping head 51 of the dumbbell body 5 is clamped into the corresponding second clamping groove of the outer butterfly lead-in optical cable distribution layer. The first clamping head 51 is in contact with the corresponding second clamping groove. The first connecting member 52 is in contact with the corresponding first clamping port 231 and the corresponding second clamping port.

[0061] Example 3: As Figure 10 and Figure 11 and refer to Figure 3 、 Figure 4 and Figure 9, a cable with a butterfly-shaped introduction unit, having an outer sheath 1 and an inner sheath 3. The outer sheath 1 is located outside the inner sheath 3. The inner sheath 3 is composed of an inner sheath main body 31, six second connectors 33 and six second card joints 34. There is a cavity 32 inside the inner sheath main body 31, and at least one electrical unit 4 is arranged in the cavity 32. A second reinforcing member 35 is arranged in the second card joint 34;

[0062] In the same cross-section, the six second connectors 33 are evenly distributed on the outer periphery of the inner sheath main body 31. One end of the second connector 33 is connected to the outer side wall of the inner sheath main body 31, and the other end of the second connector 33 is connected to the second card joint 34;

[0063] There are two butterfly-shaped introduction optical cable distribution layers between the outer sheath 1 and the inner sheath 3. The butterfly-shaped introduction optical cable distribution layer is composed of six butterfly-shaped introduction units 2. The butterfly-shaped introduction unit 2 is composed of a butterfly-shaped introduction unit main body 21, two first reinforcing members 22 and two optical fibers 24. The two first reinforcing members 22 are located inside the butterfly-shaped introduction unit main body 21. There is a first card slot 23 inside the butterfly-shaped introduction unit main body 21 between the two first reinforcing members 22. There is a first card interface 231 above the first card slot 23. The lower end of the first card interface 231 is communicated with the first card slot 23, and the upper end of the first card interface 231 is communicated with the outside. The two optical fibers 24 are respectively located inside the butterfly-shaped introduction unit main body 21 on both sides of the first card slot 23. The side walls on the left and right sides of the butterfly-shaped introduction unit main body 21 have arc-shaped side walls 25, first side walls 26 and second side walls 27. The first side wall 26 is located below the second side wall 27, and the arc-shaped side wall 25 is located between the first side wall 26 and the second side wall 27. The arc-shaped side wall 25 is recessed towards the middle of the butterfly-shaped introduction unit 2;

[0064] The six butterfly-shaped introduction units 2 in the same butterfly-shaped introduction optical cable distribution layer form a circle. The adjacent two arc-shaped side walls 25 form a second card slot, the adjacent two second side walls 27 are attached, and the adjacent two first side walls 26 form a second card interface;

[0065] The butterfly-shaped introduction units 2 of the inner butterfly-shaped introduction optical cable distribution layer are located between the corresponding two second card joints 34 of the inner sheath 3. The second card joint 34 is snapped into the corresponding second card slot, the second card joint 34 is attached to the corresponding two arc-shaped side walls 25, and the second connector 33 is attached to the corresponding second card interface;

[0066] There are six dumbbell bodies 5 between the two butterfly-shaped introduction optical cable distribution layers. The dumbbell body 5 is composed of two first card joints 51 and a first connector 52. The two first card joints 51 are respectively connected to one end of the first connector 52. A signal wire 53 is arranged in the first card joint 51;

[0067] One first card connector 51 of the dumbbell body 5 is snapped into the corresponding first card slot 23 of the inner layer of the butterfly-shaped optical cable distribution layer. The first card connector 51 fits with the corresponding first card slot 23, and the first connecting member 52 fits with the corresponding first card interface 231 and the corresponding second card interface. Another first card connector 51 of the dumbbell body 5 is snapped into the corresponding second card slot of the outer layer of the butterfly-shaped optical cable distribution layer. The first card connector 51 fits with the corresponding second card slot, and the first connecting member 52 fits with the corresponding first card interface 231 and the corresponding second card interface.

[0068] For the cable with a butterfly-shaped introduction unit described above, the distance between the axis of the inner sheath main body 31 and the axis connection line of two adjacent second card connectors 34 is greater than the outer diameter of the inner sheath main body 31.

[0069] For the cable with a butterfly-shaped introduction unit described above, the material of the second reinforcing member 35 is phosphated steel wire.

[0070] For the cable with a butterfly-shaped introduction unit described in any of the above embodiments, the electrical unit 4 is composed of a conductor and an insulating layer extruded outside the conductor.

[0071] For the cable with a butterfly-shaped introduction unit described in any of the above embodiments, the optical fiber 24 is a single-mode optical fiber or a multi-mode optical fiber.

[0072] For the cable with a butterfly-shaped introduction unit described in any of the above embodiments, the material of the butterfly-shaped introduction unit main body 21 is flame-retardant polyolefin.

[0073] For the cable with a butterfly-shaped introduction unit described in any of the above embodiments, the material of the outer sheath 1 is high-density polyethylene.

[0074] For the cable with a butterfly-shaped introduction unit described in any of the above embodiments, the material of the inner sheath 3 is high-density polyethylene.

[0075] For the cable with a butterfly-shaped introduction unit described in any of the above embodiments, the material of the dumbbell body 5 is flame-retardant polyolefin.

[0076] For the cable with a butterfly-shaped introduction unit described in any of the above embodiments, the material of the first reinforcing member 22 is phosphated steel wire.

[0077] Furthermore, in the present invention, the number of butterfly-shaped optical cable introduction units 2 in each butterfly-shaped optical cable distribution layer is any integer greater than or equal to three.

[0078] The present invention has the following beneficial effects:

[0079] 1. The butterfly-shaped optical cable distribution layer can be expanded layer by layer outward, and adjacent butterfly-shaped optical cable distribution layers are fixed to each other, and adjacent butterfly-shaped introduction units are fixed to each other, with a round and integral structure.

[0080] 2. The butterfly-shaped lead-in unit 2 is provided with a first clamping groove 23 and a first clamping interface 231, and the arc-shaped side wall 25 is recessed inward, greatly saving materials and reducing the weight of a single butterfly-shaped lead-in unit 2.

[0081] 3. The inner sheath 3, the butterfly-shaped lead-in unit 2, and the dumbbell body 5 can all be wired independently.

[0082] 4. It can transmit electric energy, electrical signals, and optical signals, and has a wide range of uses.

[0083] 5. The first reinforcing member 22 and the second reinforcing member 35 are distributed in layers around the inner sheath main body 31, and the force is more uniform. Moreover, multiple first reinforcing members 22 and second reinforcing members 35 together provide greater tensile resistance and better mechanical properties.

[0084] 6. When the butterfly-shaped lead-in unit 2 is wired independently, it can clamp the overhead rope through the first clamping groove 23 and the first clamping interface 231, facilitating wiring.

[0085] 7. When the butterfly-shaped lead-in unit 2 and the dumbbell body 5 are combined for wiring, one first clamping head 51 of the dumbbell body 5 is snapped into the first clamping groove 23 of the butterfly-shaped lead-in unit 2, and the other first clamping head 51 can be used as a suspension wire, enabling self-supporting overhead wiring.

[0086] 8. When the inner sheath 3 is wired overhead independently, it can also be self-supporting overhead wiring.

[0087] 9. When the inner sheath 3 is wired on the ground, since the distance between the center of the inner sheath main body 31 and the center line connecting the centers of two adjacent second clamping heads 34 is greater than the outer diameter of the inner sheath main body 31, the inner sheath main body 31 does not contact the ground, preventing the inner sheath main body 31 from being repeatedly rubbed and damaged by the ground, and when under pressure, preventing the inner sheath 3 from being damaged by extrusion.

[0088] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A cable with a butterfly-shaped lead-in unit, having an outer sheath (1) and an inner sheath (3), the outer sheath (1) being located outside the inner sheath (3), characterized in that: The inner sheath (3) is composed of an inner sheath main body (31), at least three second connecting members (33) and second clamping joints (34) with the same number as that of the second connecting members (33). An inner cavity (32) is provided inside the inner sheath main body (31), and at least one electrical unit (4) is provided in the inner cavity (32). In the same cross-section, all the second connecting members (33) are evenly distributed on the outer periphery of the inner sheath main body (31). One end of the second connecting member (33) is connected to the outer side wall of the inner sheath main body (31), and the other end of the second connecting member (33) is connected to the second clamping joint (34). At least two butterfly lead-in optical cable distribution layers are provided between the outer sheath (1) and the inner sheath (3). The butterfly lead-in optical cable distribution layer is composed of butterfly lead-in units (2) with the same number as that of the second connecting members (33). The butterfly lead-in units (2) in the same butterfly lead-in optical cable distribution layer enclose a circle, and a second clamping groove is formed between two adjacent butterfly lead-in units (2). A first clamping groove (23) is provided on the butterfly lead-in unit (2). The second clamping groove of the innermost butterfly lead-in optical cable distribution layer is clamped with the corresponding second clamping joint (34). Dumbbell bodies (5) are provided between two adjacent butterfly lead-in optical cable distribution layers. The number of dumbbell bodies (5) is the same as that of the second clamping joints (34). The dumbbell body (5) is composed of two first clamping joints (51) and a first connecting member (52). The two first clamping joints (51) are respectively connected to one end of the first connecting member (52). One first clamping joint (51) of the dumbbell body (5) is clamped into the corresponding first clamping groove (23) of the adjacent inner butterfly lead-in optical cable distribution layer, and the other first clamping joint (51) of the dumbbell body (5) is clamped into the corresponding second clamping groove of the adjacent outer butterfly lead-in optical cable distribution layer.

2. The cable with a butterfly-shaped introduction unit according to claim 1, characterized in that: The butterfly lead-in unit (2) is composed of a butterfly lead-in unit main body (21), two first strengthening members (22) and two optical fibers (24). The two first strengthening members (22) are located inside the butterfly lead-in unit main body (21). The first clamping groove (23) is located inside the butterfly lead-in unit main body (21) between the two first strengthening members (22). A first clamping interface (231) is provided above the first clamping groove (23). The lower end of the first clamping interface (231) is communicated with the first clamping groove (23), and the upper end of the first clamping interface (231) is communicated with the outside. The two optical fibers (24) are respectively located inside the butterfly lead-in unit main body (21) on both sides of the first clamping groove (23). The side walls on the left and right sides of the butterfly lead-in unit main body (21) have arc-shaped side walls (25), first side walls (26) and second side walls (27). The first side wall (26) is located below the second side wall (27), and the arc-shaped side wall (25) is located between the first side wall (26) and the second side wall (27). The arc-shaped side wall (25) is recessed towards the middle of the butterfly lead-in unit (2). Two adjacent second side walls (27) are attached to each other, and a second clamping interface is formed between two adjacent first side walls (26). The second clamping groove is composed of two adjacent arc-shaped side walls (25). The butterfly-shaped fiber optic cable introduction unit (2) of the innermost butterfly-shaped fiber optic cable distribution layer is located between two corresponding second card joints (34) of the inner sheath (3). The second card joint (34) is attached to two corresponding arc-shaped side walls (25), and the second connecting member (33) is attached to the corresponding second card interface. Between two adjacent butterfly-shaped fiber optic cable introduction units (2), the first card joint (51) is attached to the corresponding first card slot (23) of the inner butterfly-shaped fiber optic cable distribution layer, the first card joint (51) is attached to the corresponding second card slot of the inner butterfly-shaped fiber optic cable distribution layer, and the first connecting member (52) is attached to the corresponding first card interface (231) and the corresponding second card interface.

3. A cable with a butterfly introduction unit according to claim 2, characterized in that: A signal wire (53) is provided inside the first card joint (51).

4. A cable with a butterfly introduction unit according to claim 3, characterized in that: A second strengthening member (35) is provided inside the second card joint (34).

5. The cable with a butterfly introduction unit according to claim 4, characterized in that: The distance from the axis of the inner sheath main body (31) to the line connecting the axes of two adjacent second card joints (34) is greater than the outer diameter of the inner sheath main body (31).

6. A cable with a butterfly-shaped introduction unit according to claim 5, characterized in that: The material of the second strengthening member (35) is phosphated steel wire.

7. A cable with a butterfly-shaped introduction unit according to claim 6, characterized in that: The electrical unit (4) is composed of a conductor and an insulating layer extruded outside the conductor.

8. A cable with a butterfly-shaped introduction unit according to claim 7, characterized in that: The optical fiber (24) is a single-mode optical fiber or a multi-mode optical fiber.

9. A cable having a butterfly introduction unit according to claim 8, characterized in that: The material of the butterfly-shaped fiber optic cable introduction unit main body (21) is flame-retardant polyolefin.

10. A cable with a butterfly-shaped introduction unit according to claim 9, characterized in that: The material of the outer sheath (1) is high-density polyethylene.

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