Cable with butterfly-shaped lead-in unit

Abstract

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

Description

Technical Field

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

[0002] Due to the vigorous development of my country's manufacturing industry, the production of industrial enterprises is inseparable from the supply of electricity, and the demand for cables is very large. However, due to the increasingly tight laying resources and the diversification of cable uses, a cable is needed to meet multiple functions and be easy to lay.

[0003] In the prior art, CN118655667A discloses a multi-core butterfly-shaped optical cable introduction having at least three butterfly-shaped units, wherein the butterfly-shaped unit is composed of a butterfly-shaped unit sheath, two reinforcing components, two groups of optical fiber groups, a protective sleeve and a rib, wherein the rib is located directly above the butterfly-shaped unit sheath, the protective sleeve is located directly above the rib, the two reinforcing components are located in the butterfly-shaped unit sheath on both sides of the rib, the optical fiber group is located between the rib and the corresponding reinforcing components, a buffer groove is provided between the protective sleeve and the butterfly-shaped unit sheath, all the butterfly-shaped units are connected end to end by connecting components, and a shaping frame is formed between all the butterfly-shaped units.

[0004] The above-mentioned prior art has the following drawbacks: 1. The butterfly-shaped introduction unit cannot be expanded in multiple layers; 2. The application scope is narrow; 3. The installation 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-shaped introduction unit, which is achieved by adopting the following technical solutions.

[0006] A cable with a butterfly-shaped lead-in unit, comprising an outer sheath and an inner sheath, wherein the outer sheath is located outside the inner sheath, and the inner sheath is composed of an inner sheath body, at least three second connectors, and second clamping joints having the same number as the second connectors, and an inner cavity is provided inside the inner sheath body, and at least one electrical unit is provided in the inner cavity; In the same cross section, all the second connecting members are evenly spaced and distributed on the outer periphery of the inner protective layer body, one end of the second connecting member is connected to the outer side wall of the inner protective layer body, and the other end of the second connecting member is connected to the second clamping joint; At least two butterfly-shaped optical cable distribution layers are arranged between the outer sheath and the inner sheath, and the butterfly-shaped optical cable distribution layers are composed of butterfly-shaped introduction units whose number is the same as the number of the second connectors. The butterfly introduction units of the same butterfly introduction optical cable distribution layer are arranged in a circle, a second clamping groove is formed between two adjacent butterfly introduction units, a first clamping groove is provided on the butterfly introduction unit, the second clamping groove of the innermost butterfly introduction optical cable distribution layer is clamped with the corresponding second clamping joint, a dumbbell body is provided between two adjacent butterfly introduction optical cable distribution layers, the number of dumbbell bodies and second clamping joints is the same, the dumbbell body is composed of two first clamping joints and a first connecting piece, the two first clamping joints are respectively connected to one end of the first connecting piece, a first clamping joint of the dumbbell body is clamped into the corresponding first clamping groove of the adjacent inner butterfly introduction optical cable distribution layer, and the other first clamping joint of the dumbbell body is clamped into the corresponding second clamping groove of the adjacent outer butterfly introduction optical cable distribution layer.

[0007] The cable with a butterfly-shaped introduction unit described above, the butterfly-shaped introduction unit is composed of a butterfly-shaped introduction unit body, two first reinforcement members and two optical fibers, the two first reinforcement members are located in the butterfly-shaped introduction unit body, the first clamping groove is located in the butterfly-shaped introduction unit body between the two first reinforcement 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, the upper end of the first clamping interface is communicated with the outside, the two optical fibers are respectively located in the butterfly-shaped introduction unit body on both sides of the first clamping groove, the side walls on the left and right sides of the butterfly-shaped introduction unit body have arc-shaped side walls, first side walls and second side walls, the first side wall is located below the second side wall, the arc-shaped side wall is located between the first side wall and the second side wall, and the arc-shaped side wall is recessed toward the middle of the butterfly-shaped introduction unit; Two adjacent second side walls are fitted together, a second card interface is formed between two adjacent first side walls, and the second card slot is formed by two adjacent arc-shaped side walls; The innermost butterfly-shaped lead-in unit of the butterfly-shaped lead-in optical cable distribution layer is located between the two corresponding second card connectors of the inner sheath, the second card connector is fitted with the two corresponding arc-shaped side walls, and the second connector is fitted with the corresponding second card interface; Between two adjacent butterfly-shaped introduction units, the first card connector is fitted with the corresponding first card groove of the inner butterfly-shaped introduction optical cable distribution layer, the first card connector is fitted with the corresponding second card groove of the inner butterfly-shaped introduction optical cable distribution layer, and the first connecting piece is fitted with the corresponding first card interface and the corresponding second card interface.

[0008] In the above-mentioned cable with a butterfly-shaped lead-in unit, a signal conductor is arranged in the first card connector.

[0009] In the above-mentioned cable with a butterfly-shaped lead-in unit, a second reinforcing member is provided in the second card connector.

[0010] In the above-mentioned cable with a butterfly-shaped lead-in unit, the distance from the axis of the inner sheath body to the connecting line of the axis of two adjacent second clamping joints is greater than the outer diameter of the inner sheath body.

[0011] In the above-mentioned cable with a butterfly-shaped lead-in unit, the material of the second reinforcement member is phosphated steel wire.

[0012] In the above-mentioned cable with a butterfly-shaped lead-in unit, the electrical unit is composed of a conductor and an insulating layer extruded outside the conductor.

[0013] In the above-mentioned cable with a butterfly-shaped introduction unit, the optical fiber is a single-mode optical fiber or a multi-mode optical fiber.

[0014] In the above-mentioned cable with a butterfly-shaped lead-in unit, the material of the main body of the butterfly-shaped lead-in unit is flame-retardant polyolefin.

[0015] The outer sheath material of the cable with the butterfly-shaped lead-in unit described above is high-density polyethylene.

[0016] In the above-mentioned cable with a butterfly-shaped lead-in unit, the material of the inner sheath is high-density polyethylene.

[0017] In the above-mentioned cable with a butterfly-shaped lead-in unit, the dumbbell body is made of flame-retardant polyolefin.

[0018] In the above-mentioned cable with a butterfly-shaped lead-in unit, the material of the first reinforcement member is phosphating steel wire.

[0019] The present invention has the following beneficial effects: 1. The butterfly-shaped optical cable distribution layer can be expanded outward layer by layer, and adjacent butterfly-shaped 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.

[0020] 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.

[0021] 3. The inner sheath, butterfly lead-in unit and dumbbell body can be wired separately.

[0022] 4. It can transmit electrical energy, electrical signals, and optical signals and has a wide range of uses.

[0023] 5. The first reinforcement members and the second reinforcement members are distributed in layers around the inner protective layer body, so that the force is more evenly distributed. Multiple first reinforcement members and second reinforcement members together provide greater tensile strength and better mechanical properties.

[0024] 6. When the butterfly-shaped lead-in unit is wired separately, it can be connected to the overhead rope through the first card slot and the first card interface, which is convenient for wiring.

[0025] 7. When the butterfly lead-in unit and the dumbbell body are combined for wiring, one first clamping joint of the dumbbell body is clamped into the first clamping groove of the butterfly lead-in unit, and the other first clamping joint can be used as a suspension wire, so that it can be self-supporting overhead wiring.

[0026] 8. When the inner sheath is laid alone in overhead wiring, it can also be self-supporting overhead wiring.

[0027] 9. When the inner sheath is laid on the ground, since the distance from the axis of the inner sheath body to the axis of two adjacent second connectors is greater than the outer diameter of the inner sheath body, the inner sheath body does not contact the ground, thereby preventing the inner sheath body from being damaged by repeated friction with the ground, and preventing the inner sheath from being squeezed and damaged when subjected to pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of a section of Example 1 of the present invention.

[0029] Figure 2 It is a front view of embodiment 1 of the present invention.

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of a section of the butterfly-shaped introduction unit of Example 1 of the present invention.

[0031] Figure 4 It is a front view of the butterfly introduction unit of Example 1 of the present invention.

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of the inner protective layer of Example 1 of the present invention.

[0033] Figure 6 It is a front view of the inner protective layer of Example 1 of the present invention.

[0034] Figure 7 It is a front view of the dumbbell body of embodiment 1 of the present invention.

[0035] Figure 8 It is a front view of embodiment 2 of the present invention.

[0036] Fig. 9 It is a schematic diagram of the three-dimensional structure of a section of a dumbbell body according to Example 2 of the present invention.

[0037] Fig.10 It is a front view of embodiment 3 of the present invention.

[0038] Fig.11 It is a schematic diagram of the three-dimensional structure of the inner protective layer of Example 3 of the present invention.

[0039] In the figure: 1. outer protective layer, 2. butterfly-shaped introduction unit, 21. butterfly-shaped introduction unit body, 22. first reinforcement member, 23. first card slot, 231. first card interface, 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 card connector, 35. second reinforcement member, 4. electrical unit, 5. dumbbell body, 51. first card connector, 52. first connecting member, 53. signal wire. DETAILED DESCRIPTION

[0040] Example 1: Figures 1 to 7 , a cable with a butterfly-shaped lead-in unit, comprising an outer sheath 1 and an inner sheath 3, wherein the outer sheath 1 is located outside the inner sheath 3, the inner sheath 3 is composed of an inner sheath body 31, six second connectors 33 and six second card connectors 34, an inner cavity 32 is provided inside the inner sheath body 31, and at least one electrical unit 4 is provided inside the inner cavity 32; In the same cross section, six second connecting members 33 are evenly spaced and distributed on the outer periphery of the inner sheath body 31 , one end of the second connecting member 33 is connected to the outer side wall of the inner sheath body 31 , and the other end of the second connecting member 33 is connected to the second clamping joint 34 ; Two butterfly-shaped optical cable distribution layers are arranged between the outer sheath 1 and the inner sheath 3. The butterfly-shaped 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 body 21, two first reinforcement members 22 and two optical fibers 24. The two first reinforcement members 22 are located in the butterfly-shaped introduction unit body 21. A first card slot 23 is arranged in the butterfly-shaped introduction unit body 21 between the two first reinforcement members 22. A first card interface 231 is arranged above the first card slot 23. The first card interface 231 is provided at the top of the butterfly-shaped introduction unit body 21. The lower end of the opening 231 is communicated with the first card slot 23, and the upper end of the first card slot 231 is communicated with the outside. The two optical fibers 24 are respectively located in the butterfly-shaped introduction unit 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 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. The arc-shaped side wall 25 is recessed toward the middle of the butterfly-shaped introduction unit 2. The six butterfly-shaped lead-in units 2 of the same butterfly-shaped lead-in optical cable distribution layer are arranged in a circle, two adjacent arc-shaped side walls 25 form a second card slot, two adjacent second side walls 27 are fitted together, and two adjacent first side walls 26 form a second card interface; The butterfly introduction unit 2 of the inner butterfly introduction optical cable distribution layer is located between the two corresponding second card connectors 34 of the inner sheath 3, the second card connector 34 is inserted into the corresponding second card slot, the second card connector 34 is fitted with the corresponding two arc-shaped side walls 25, and the second connector 33 is fitted with the corresponding second card interface; Six dumbbell bodies 5 are arranged between the two butterfly-shaped optical cable distribution layers. The dumbbell bodies 5 are composed of two first card connectors 51 and a first connecting member 52. The two first card connectors 51 are respectively connected to one end of the first connecting member 52. A first card connector 51 of the dumbbell body 5 is inserted into the corresponding first card connector groove 23 of the inner butterfly-shaped optical cable distribution layer, and the first card connector 51 is fitted with the corresponding first card connector groove 23. Another first card connector 51 of the dumbbell body 5 is inserted into the corresponding second card connector groove of the outer butterfly-shaped optical cable distribution layer, and the first card connector 51 is fitted with the corresponding second card connector groove. The first connecting member 52 is fitted with the corresponding first card interface 231 and the corresponding second card interface.

[0041] Example 2: Figure 8 and Fig. 9 , and refer to Figures 3 to 6 , a cable with a butterfly-shaped lead-in unit, comprising an outer sheath 1 and an inner sheath 3, wherein the outer sheath 1 is located outside the inner sheath 3, the inner sheath 3 is composed of an inner sheath body 31, six second connectors 33 and six second card connectors 34, an inner cavity 32 is provided inside the inner sheath body 31, and at least one electrical unit 4 is provided inside the inner cavity 32; In the same cross section, six second connecting members 33 are evenly spaced and distributed on the outer periphery of the inner sheath body 31 , one end of the second connecting member 33 is connected to the outer side wall of the inner sheath body 31 , and the other end of the second connecting member 33 is connected to the second clamping joint 34 ; Two butterfly-shaped optical cable distribution layers are arranged between the outer sheath 1 and the inner sheath 3. The butterfly-shaped 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 body 21, two first reinforcement members 22 and two optical fibers 24. The two first reinforcement members 22 are located in the butterfly-shaped introduction unit body 21. A first card slot 23 is arranged in the butterfly-shaped introduction unit body 21 between the two first reinforcement members 22. A first card interface 231 is arranged above the first card slot 23. The first card interface 231 is provided at the top of the butterfly-shaped introduction unit body 21. The lower end of the opening 231 is communicated with the first card slot 23, and the upper end of the first card slot 231 is communicated with the outside. The two optical fibers 24 are respectively located in the butterfly-shaped introduction unit 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 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. The arc-shaped side wall 25 is recessed toward the middle of the butterfly-shaped introduction unit 2. The six butterfly-shaped lead-in units 2 of the same butterfly-shaped lead-in optical cable distribution layer are arranged in a circle, two adjacent arc-shaped side walls 25 form a second card slot, two adjacent second side walls 27 are fitted together, and two adjacent first side walls 26 form a second card interface; The butterfly introduction unit 2 of the inner butterfly introduction optical cable distribution layer is located between the two corresponding second card connectors 34 of the inner sheath 3, the second card connector 34 is inserted into the corresponding second card slot, the second card connector 34 is fitted with the corresponding two arc-shaped side walls 25, and the second connector 33 is fitted with the corresponding second card interface; Six dumbbell bodies 5 are arranged between the two butterfly-shaped optical cable distribution layers. The dumbbell bodies 5 are composed of two first card connectors 51 and a first connector 52. The two first card connectors 51 are respectively connected to one end of the first connector 52. A signal conductor 53 is arranged in the first card connector 51. A first card connector 51 of the dumbbell body 5 is inserted into the corresponding first card connector groove 23 of the inner butterfly-shaped optical cable distribution layer, and the first card connector 51 is fitted with the corresponding first card connector groove 23. Another first card connector 51 of the dumbbell body 5 is inserted into the corresponding second card connector groove of the outer butterfly-shaped optical cable distribution layer, and the first card connector 51 is fitted with the corresponding second card connector groove. The first connecting member 52 is fitted with the corresponding first card interface 231 and the corresponding second card interface.

[0042] Example 3: Fig.10 and Fig.11 , and refer to Figure 3 , Figure 4 and Fig. 9 A cable with a butterfly-shaped lead-in unit comprises an outer sheath 1 and an inner sheath 3, wherein the outer sheath 1 is located outside the inner sheath 3, the inner sheath 3 is composed of an inner sheath body 31, six second connectors 33 and six second clamping joints 34, an inner cavity 32 is provided inside the inner sheath body 31, at least one electrical unit 4 is provided inside the inner cavity 32, and a second reinforcing member 35 is provided inside the second clamping joint 34; In the same cross section, six second connecting members 33 are evenly spaced and distributed on the outer periphery of the inner sheath body 31 , one end of the second connecting member 33 is connected to the outer side wall of the inner sheath body 31 , and the other end of the second connecting member 33 is connected to the second clamping joint 34 ; Two butterfly-shaped optical cable distribution layers are arranged between the outer sheath 1 and the inner sheath 3. The butterfly-shaped 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 body 21, two first reinforcement members 22 and two optical fibers 24. The two first reinforcement members 22 are located in the butterfly-shaped introduction unit body 21. A first card slot 23 is arranged in the butterfly-shaped introduction unit body 21 between the two first reinforcement members 22. A first card interface 231 is arranged above the first card slot 23. The first card interface 231 is provided at the top of the butterfly-shaped introduction unit body 21. The lower end of the opening 231 is communicated with the first card slot 23, and the upper end of the first card slot 231 is communicated with the outside. The two optical fibers 24 are respectively located in the butterfly-shaped introduction unit 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 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. The arc-shaped side wall 25 is recessed toward the middle of the butterfly-shaped introduction unit 2. The six butterfly-shaped lead-in units 2 of the same butterfly-shaped lead-in optical cable distribution layer are arranged in a circle, two adjacent arc-shaped side walls 25 form a second card slot, two adjacent second side walls 27 are fitted together, and two adjacent first side walls 26 form a second card interface; The butterfly introduction unit 2 of the inner butterfly introduction optical cable distribution layer is located between the two corresponding second card connectors 34 of the inner sheath 3, the second card connector 34 is inserted into the corresponding second card slot, the second card connector 34 is fitted with the corresponding two arc-shaped side walls 25, and the second connector 33 is fitted with the corresponding second card interface; Six dumbbell bodies 5 are arranged between the two butterfly-shaped optical cable distribution layers. The dumbbell bodies 5 are composed of two first card connectors 51 and a first connector 52. The two first card connectors 51 are respectively connected to one end of the first connector 52. A signal conductor 53 is arranged in the first card connector 51. A first card connector 51 of the dumbbell body 5 is inserted into the corresponding first card connector groove 23 of the inner butterfly-shaped optical cable distribution layer, the first card connector 51 is fitted with the corresponding first card connector groove 23, the first connecting piece 52 is fitted with the corresponding first card interface 231 and the corresponding second card interface, and another first card connector 51 of the dumbbell body 5 is inserted into the corresponding second card connector groove of the outer butterfly-shaped optical cable distribution layer, the first card connector 51 is fitted with the corresponding second card connector groove, and the first connecting piece 52 is fitted with the corresponding first card interface 231 and the corresponding second card interface.

[0043] In the cable with the butterfly-shaped lead-in unit described above, the distance from the axis of the inner sheath body 31 to the axis of two adjacent second clamping joints 34 is greater than the outer diameter of the inner sheath body 31 .

[0044] In the above-mentioned cable with a butterfly-shaped lead-in unit, the material of the second reinforcement member 35 is phosphating steel wire.

[0045] In the cable with a butterfly-shaped lead-in 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.

[0046] In 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.

[0047] In the cable with a butterfly-shaped lead-in unit described in any of the above embodiments, the material of the butterfly-shaped lead-in unit body 21 is flame-retardant polyolefin.

[0048] In the cable with a butterfly-shaped lead-in unit described in any of the above embodiments, the material of the outer sheath 1 is high-density polyethylene.

[0049] In the cable with a butterfly-shaped lead-in unit described in any of the above embodiments, the material of the inner sheath 3 is high-density polyethylene.

[0050] In the cable with a butterfly-shaped lead-in unit described in any of the above embodiments, the material of the dumbbell body 5 is flame-retardant polyolefin.

[0051] In the cable with a butterfly-shaped lead-in unit described in any of the above embodiments, the material of the first reinforcement member 22 is phosphating steel wire.

[0052] Furthermore, in the present invention, the number of the butterfly-shaped introduction units 2 in each butterfly-shaped introduction optical cable distribution layer is any integer greater than or equal to three.

[0053] The present invention has the following beneficial effects: 1. The butterfly-shaped optical cable distribution layer can be expanded outward layer by layer, and adjacent butterfly-shaped 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.

[0054] 2. The butterfly-shaped introduction unit 2 is provided with a first card slot 23 and a first card interface 231 , and the arc-shaped side wall 25 is recessed inwards, which greatly saves materials and reduces the weight of a single butterfly-shaped introduction unit 2 .

[0055] 3. The inner sheath 3, the butterfly-shaped lead-in unit 2 and the dumbbell body 5 can all be wired separately.

[0056] 4. It can transmit electrical energy, electrical signals, and optical signals and has a wide range of uses.

[0057] 5. The first reinforcement members 22 and the second reinforcement members 35 are distributed in layers around the inner protective layer body 31, so that the force is more uniform, and multiple first reinforcement members 22 and second reinforcement members 35 together provide greater tensile resistance and better mechanical properties.

[0058] 6. When the butterfly-shaped lead-in unit 2 is used for wiring alone, it can be connected to the overhead rope through the first clamping groove 23 and the first clamping interface 231, which is convenient for wiring.

[0059] 7. When the butterfly-shaped lead-in unit 2 and the dumbbell body 5 are combined for wiring, one first clamping joint 51 of the dumbbell body 5 is clamped into the first clamping groove 23 of the butterfly-shaped lead-in unit 2, and the other first clamping joint 51 can be used as a suspension wire, so that it can be self-supporting overhead wiring.

[0060] 8. When the inner sheath 3 is laid alone in an overhead wiring manner, it can also be a self-supporting overhead wiring.

[0061] 9. When the inner sheath 3 is laid on the ground, since the distance from the axis of the inner sheath body 31 to the axis of two adjacent second clamping joints 34 is greater than the outer diameter of the inner sheath body 31, the inner sheath body 31 does not contact the ground, thereby preventing the inner sheath body 31 from being damaged by repeated friction with the ground, and preventing the inner sheath 3 from being squeezed and damaged when subjected to pressure.

[0062] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall 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, 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, comprising an outer sheath (1) and an inner sheath (3), wherein the outer sheath (1) is located outside the inner sheath (3), and is characterized in that: The inner protective layer (3) is composed of an inner protective layer body (31), at least three second connecting pieces (33) and second clamping joints (34) having the same number as the second connecting pieces (33); an inner cavity (32) is provided inside the inner protective layer body (31), and at least one electrical unit (4) is provided inside the inner cavity (32); In the same cross section, all the second connecting pieces (33) are evenly spaced and distributed on the outer periphery of the inner protective layer body (31), one end of the second connecting piece (33) is connected to the outer side wall of the inner protective layer body (31), and the other end of the second connecting piece (33) is connected to the second clamping joint (34); At least two butterfly-shaped optical cable distribution layers are arranged between the outer sheath (1) and the inner sheath (3), and the butterfly-shaped optical cable distribution layers are composed of butterfly-shaped introduction units (2) having the same number as the number of second connectors (33). The butterfly-shaped lead-in units (2) of the same butterfly-shaped lead-in optical cable distribution layer are arranged in a circle, a second clamping groove is formed between two adjacent butterfly-shaped lead-in units (2), a first clamping groove (23) is provided on the butterfly-shaped lead-in optical cable distribution layer, the second clamping groove of the innermost butterfly-shaped lead-in optical cable distribution layer is clamped with a corresponding second clamping joint (34), a dumbbell body (5) is provided between two adjacent butterfly-shaped lead-in optical cable distribution layers, the number of the dumbbell bodies (5) and the number of the second clamping joints (34) are the same, 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-shaped 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-shaped lead-in optical cable distribution layer.

2. A cable with a butterfly-shaped introduction unit according to claim 1, characterized in that: The butterfly introduction unit (2) is composed of a butterfly introduction unit body (21), two first reinforcement members (22) and two optical fibers (24), the two first reinforcement members (22) are located in the butterfly introduction unit body (21), a first card slot (23) is located in the butterfly introduction unit body (21) between the two first reinforcement members (22), a first card interface (231) is provided 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 first card interface (231) is connected to the first card slot (23). 1) is connected to the outside, two optical fibers (24) are respectively located in the butterfly-shaped introduction 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 introduction unit body (21) have arc-shaped side walls (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 toward the middle of the butterfly-shaped introduction unit (2); Two adjacent second side walls (27) are fitted together, a second card interface is formed between two adjacent first side walls (26), and the second card slot is formed by two adjacent arc-shaped side walls (25); The innermost butterfly-shaped lead-in unit (2) of the butterfly-shaped lead-in optical cable distribution layer is located between two corresponding second card connectors (34) of the inner sheath (3), the second card connector (34) is fitted with two corresponding arc-shaped side walls (25), and the second connector (33) is fitted with the corresponding second card interface; Between two adjacent butterfly-shaped lead-in units (2), the first card connector (51) is fitted with a corresponding first card slot (23) of the inner butterfly-shaped lead-in optical cable distribution layer, the first card connector (51) is fitted with a corresponding second card slot of the inner butterfly-shaped lead-in optical cable distribution layer, and the first connector (52) is fitted with a corresponding first card interface (231) and a corresponding second card interface.

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

4. A cable with a butterfly-shaped introduction unit according to claim 3, characterized in that: A second reinforcing member (35) is disposed inside the second clamping joint (34).

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

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

7. A cable with a butterfly-shaped introduction unit according to claim 6, characterized in that: The electric 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 with a butterfly-shaped introduction unit according to claim 8, characterized in that: The material of the butterfly-shaped introduction unit 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 protective layer (1) is high-density polyethylene.

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