A spliced structure butterfly-shaped fiber optic cable

Abstract

The present invention belongs to the technical field of optical cable, and in particular relates to a spliced structure butterfly-shaped optical cable for indoor distribution, which has a cable core and an outer sheath. The cable core is composed of six butterfly-shaped units. Each butterfly-shaped unit is composed of a first wing-shaped component and a second wing-shaped component. There is a clamping groove between the first wing-shaped component and the second wing-shaped component. The six butterfly-shaped units are clamped and fixed to form a whole. Along the clockwise direction, the first wing-shaped component of the previous butterfly-shaped unit is inserted into the clamping groove of the next butterfly-shaped unit. There are two first strengthening members and one optical fiber in the first wing-shaped component, and the optical fiber is located between the two first strengthening members. The present invention has the beneficial effects of convenient cable forming, good protection effect on optical fiber, uniform stress, and wide application scenarios, etc.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical cables, and in particular relates to a split-structured butterfly lead-in optical cable. Background Art

[0002] As the household optical cable, the butterfly lead-in optical cable is the most commonly used optical cable for fiber to the home, and there is a large demand every year. In the prior art, there are problems such as the single structure of the butterfly lead-in optical cable, poor mechanical strength of the optical cable, and poor protection of the optical fiber.

[0003] In the prior art, for example, CN118655667A discloses a multi-core butterfly lead-in 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, and 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 unit is located on the outer side, and the protection effect on the optical fiber is poor; 2. The structure is not compact and the outer diameter is large. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to disclose a split-structured butterfly lead-in optical cable, which is realized by the following technical solutions.

[0006] A split-structured butterfly lead-in optical cable has a cable core and an outer sheath. The outer sheath is located outside the cable core. The cable core is composed of six butterfly units. The butterfly unit is composed of a first wing-shaped part and a second wing-shaped part. A clamping groove is provided between the first wing-shaped part and the second wing-shaped part. The six butterfly units are clamped and fixed to form a whole. Along the clockwise direction, the first wing-shaped part of the previous butterfly unit is inserted into the clamping groove of the next butterfly unit;

[0007] Two first strengthening members and an optical transmission unit composed of at least one optical fiber are provided in the first wing-shaped part. The optical transmission unit is located between the two first strengthening members.

[0008] For the above-mentioned split-structured butterfly lead-in optical cable, the first wing-shaped part has a first outer side wall, a first inner side wall, a second outer side wall, a second inner side wall, a third outer side wall and a fourth outer side wall;

[0009] The lower end of the first inner wall is connected to the upper end of the second inner wall. The first inner wall and the second inner wall form an angle of 120°. The upper end of the first outer wall is connected to the upper end of the first inner wall. The first outer wall and the first inner wall form an angle of 60°. The lower end of the first outer wall is connected to the upper end of the second outer wall. The second outer wall is parallel to the first inner wall. The lower end of the second outer wall is connected to the upper end of the third outer wall. The third outer wall is parallel to the second inner wall;

[0010] The second wing-shaped component has a fifth outer wall, a third inner wall, a fourth inner wall, a sixth outer wall, a fifth inner wall, a seventh outer wall, and an eighth outer wall;

[0011] The lower end of the fifth outer wall is connected to the upper end of the sixth outer wall. The fifth outer wall and the sixth outer wall form an angle of 120°. The lower end of the sixth outer wall is connected to the upper end of the seventh outer wall. The sixth outer wall and the seventh outer wall form an angle of 60°. The upper end of the fifth outer wall is connected to the upper end of the third inner wall. The lower end of the third inner wall is connected to the upper end of the fourth inner wall. The fourth inner wall is parallel to the sixth outer wall. The lower end of the fourth inner wall is connected to the upper end of the fifth inner wall;

[0012] The lower end of the fifth inner wall is connected to the lower end of the second inner wall. The fifth inner wall and the second inner wall form an angle of 120°. The upper ends of the fourth outer wall and the eighth outer wall are connected by a connecting edge. The clamping groove is located between the first inner wall, the second inner wall, the fifth inner wall, and the fourth inner wall;

[0013] The first outer wall of the latter butterfly unit is attached to the first inner wall of the previous butterfly unit;

[0014] The second outer wall of the latter butterfly unit is attached to the second inner wall of the previous butterfly unit;

[0015] The third outer wall of the latter butterfly unit is attached to the fifth inner wall of the previous butterfly unit;

[0016] The fourth outer wall of the latter butterfly unit is attached to the fourth inner wall of the previous butterfly unit;

[0017] The connecting edge of the latter butterfly unit is attached to the third inner wall of the previous butterfly unit;

[0018] The third outer walls and the fourth outer walls of the six butterfly units are located on the same regular hexagon. The sixth outer walls and the seventh outer walls of the six butterfly units are located on the same regular hexagon.

[0019] In the above-mentioned spliced - structure butterfly - type fiber optic cable, one first reinforcing member in the first wing - shaped component is located between the first outer wall, the first inner wall, and the second outer wall, and the other first reinforcing member is located between the second inner wall, the third outer wall, and the fourth outer wall.

[0020] For a split - structure butterfly - shaped fiber optic cable as described above, a tear - notch is provided at the connection between the first inner wall and the second inner wall.

[0021] For a split - structure butterfly - shaped fiber optic cable as described above, a filling component is provided between two adjacent second wing - shaped components.

[0022] For a split - structure butterfly - shaped fiber optic cable as described above, a circular second strengthening member is provided inside the second wing - shaped component.

[0023] For a split - structure butterfly - shaped fiber optic cable as described above, the material of the second strengthening member is phosphated steel wire.

[0024] For a split - structure butterfly - shaped fiber optic cable as described above, two first strengthening members and an optical transmission unit composed of at least one optical fiber are provided inside the second wing - shaped component, and the optical transmission unit is located between the two first strengthening members.

[0025] For a split - structure butterfly - shaped fiber optic cable as described above, one first strengthening member is located between the fifth outer wall, the third inner wall, the fourth inner wall and the sixth outer wall, and the other first strengthening member is located between the fifth inner wall, the seventh outer wall and the eighth outer wall.

[0026] For a split - structure butterfly - shaped fiber optic cable as described above, a tear - notch is provided at the connection between the fourth inner wall and the fifth inner wall.

[0027] For a split - structure butterfly - shaped fiber optic cable as described above, the material of the outer sheath is high - density polyethylene or medium - density polyethylene or low - density polyethylene.

[0028] For a split - structure butterfly - shaped fiber optic cable as described above, the material of the first wing - shaped component is flame - retardant polyolefin.

[0029] For a split - structure butterfly - shaped fiber optic cable as described above, the material of the first strengthening member is phosphated steel wire.

[0030] For a split - structure butterfly - shaped fiber optic cable as described above, the material of the filling component is polypropylene.

[0031] For a split - structure butterfly - shaped fiber optic cable as described above, the model of the optical fiber is G.657.

[0032] The present invention has the following beneficial effects:

[0033] 1. The butterfly - shaped unit can be snapped into a whole without using materials such as tying yarn for fixation, which is convenient for production.

[0034] The first wing - shaped component is located inside the cable core and is protected by the second wing - shaped component on the outside, having a better protection effect.

[0035] 3. Inside the entire cable core, the second strengthening member is evenly distributed on the outside, and the first strengthening member is evenly distributed on the inside. When the optical cable is subjected to tensile force, the tensile force is more evenly distributed, and it has a better anti-tensile effect.

[0036] 4. When the second wing-shaped member contains the second strengthening member, each butterfly unit can be used as a self-supporting butterfly-shaped fiber optic cable for introduction.

[0037] 5. When the second wing-shaped member contains two first strengthening members and one optical transmission member, each butterfly unit can be divided into two non-self-supporting butterfly-shaped fiber optic cables for introduction.

[0038] 6. The tear opening is located inside the cable core, and the optical cable will not be damaged from the tear opening due to misoperation during laying. Description of the Drawings

[0039] Figure 1 is the front view of Embodiment 1 of the present invention.

[0040] Figure 2 is the front view of the butterfly unit of Embodiment 1 of the present invention.

[0041] Figure 3 is the front view of the combination of six butterfly units of Embodiment 1 of the present invention.

[0042] Figure 4 is the front view of Embodiment 2 of the present invention.

[0043] Figure 5 is the front view of the butterfly unit of Embodiment 2 of the present invention.

[0044] Figure 6 is the front view of the combination of six butterfly units of Embodiment 2 of the present invention.

[0045] In the figure: 1. Outer sheath, 2. Butterfly unit, 21. First wing-shaped member, 211. First outer wall, 212. First inner wall, 213. Second outer wall, 214. Second inner wall, 215. Third outer wall, 216. Fourth outer wall, 217. First strengthening member, 218. Optical fiber, 219. Tear opening, 22. Second wing-shaped member, 221. Fifth outer wall, 222. Third inner wall, 223. Fourth inner wall, 224. Sixth outer wall, 225. Fifth inner wall, 226. Seventh outer wall, 227. Eighth outer wall, 228. Second strengthening member, 23. Clamping groove, 24. Connecting edge, 3. Filling member. Detailed Embodiments

[0046] Embodiment 1: As Figures 1 to 3, a spliced - structure butterfly - introduced optical cable, having a cable core and an outer sheath 1, the outer sheath 1 is located outside the cable core, the cable core is composed of six butterfly units 2, the butterfly unit 2 is composed of a first wing - shaped component 21 and a second wing - shaped component 22, the first wing - shaped component 21 has a first outer side wall 211, a first inner side wall 212, a second outer side wall 213, a second inner side wall 214, a third outer side wall 215 and a fourth outer side wall 216;

[0047] The lower end of the first inner side wall 212 is connected to the upper end of the second inner side wall 214, the first inner side wall 212 and the second inner side wall 214 form an angle of 120°, the upper end of the first outer side wall 211 is connected to the upper end of the first inner side wall 212, the first outer side wall 211 and the first inner side wall 212 form an angle of 60°, the lower end of the first outer side wall 211 is connected to the upper end of the second outer side wall 213, the second outer side wall 213 is parallel to the first inner side wall 212, the lower end of the second outer side wall 213 is connected to the upper end of the third outer side wall 215, the third outer side wall 215 is parallel to the second inner side wall 214, and a tear - off opening 219 is provided at the connection of the first inner side wall 212 and the second inner side wall 214;

[0048] Two first strengthening members 217 and an optical fiber 218 are provided inside the first wing - shaped component 21. One first strengthening member 217 is located between the first outer side wall 211, the first inner side wall 212 and the second outer side wall 213, and the other first strengthening member 217 is located between the second inner side wall 214, the third outer side wall 215 and the fourth outer side wall 216. The optical fiber 218 is located between the two first strengthening members 217;

[0049] The second wing - shaped component 22 has a fifth outer side wall 221, a third inner side wall 222, a fourth inner side wall 223, a sixth outer side wall 224, a fifth inner side wall 225, a seventh outer side wall 226, an eighth outer side wall 227;

[0050] The lower end of the fifth outer side wall 221 is connected to the upper end of the sixth outer side wall 224, the fifth outer side wall 221 and the sixth outer side wall 224 form an angle of 120°, the lower end of the sixth outer side wall 224 is connected to the upper end of the seventh outer side wall 226, the sixth outer side wall 224 and the seventh outer side wall 226 form an angle of 120°, the upper end of the fifth outer side wall 221 is connected to the upper end of the third inner side wall 222, the lower end of the third inner side wall 222 is connected to the upper end of the fourth inner side wall 223, the fourth inner side wall 223 is parallel to the sixth outer side wall 224, the lower end of the fourth inner side wall 223 is connected to the upper end of the fifth inner side wall 225, and a circular second strengthening member 228 is provided inside the second wing - shaped component 22;

[0051] The lower end of the fifth inner wall 225 is connected to the lower end of the second inner wall 214. The fifth inner wall 225 and the second inner wall 214 form an angle of 120°. The upper ends of the fourth outer wall 216 and the eighth outer wall 227 are connected by a connecting edge 24. A clamping groove 23 is formed among the first inner wall 212, the second inner wall 214, the fifth inner wall 225 and the fourth inner wall 223;

[0052] Six butterfly units 2 are clamped and fixed to form a whole. In the clockwise direction, the first wing-shaped component 21 of the previous butterfly unit 2 is inserted into the clamping groove 23 of the subsequent butterfly unit 2;

[0053] The first outer wall 211 of the subsequent butterfly unit 2 is attached to the first inner wall 212 of the previous butterfly unit 2;

[0054] The second outer wall 213 of the subsequent butterfly unit 2 is attached to the second inner wall 214 of the previous butterfly unit 2;

[0055] The third outer wall 215 of the subsequent butterfly unit 2 is attached to the fifth inner wall 225 of the previous butterfly unit 2;

[0056] The fourth outer wall 216 of the subsequent butterfly unit 2 is attached to the fourth inner wall 223 of the previous butterfly unit 2;

[0057] The connecting edge 24 of the subsequent butterfly unit 2 is attached to the third inner wall 222 of the previous butterfly unit 2;

[0058] The third outer walls 215 and the fourth outer walls 216 of the six butterfly units 2 are located on the same regular hexagon. The sixth outer walls 224 and the seventh outer walls 226 of the six butterfly units 2 are located on the same regular hexagon;

[0059] A filling component 3 is provided between two adjacent second wing-shaped components 22 and the outer sheath 1.

[0060] For the above-mentioned split-structure butterfly-shaped fiber optic cable introduced, the material of the second strengthening member 228 is phosphated steel wire.

[0061] Embodiment 2: As Figures 4 to 6 , a split-structure butterfly-shaped fiber optic cable introduced has a cable core and an outer sheath 1. The outer sheath 1 is located outside the cable core. The cable core is composed of six butterfly units 2. The butterfly unit 2 is composed of a first wing-shaped component 21 and a second wing-shaped component 22. The first wing-shaped component 21 has a first outer wall 211, a first inner wall 212, a second outer wall 213, a second inner wall 214, a third outer wall 215 and a fourth outer wall 216;

[0062] The lower end of the first inner wall 212 is connected to the upper end of the second inner wall 214. The first inner wall 212 and the second inner wall 214 form an angle of 120°. The upper end of the first outer wall 211 is connected to the upper end of the first inner wall 212. The first outer wall 211 and the first inner wall 212 form an angle of 60°. The lower end of the first outer wall 211 is connected to the upper end of the second outer wall 213. The second outer wall 213 is parallel to the first inner wall 212. The lower end of the second outer wall 213 is connected to the upper end of the third outer wall 215. The third outer wall 215 is parallel to the second inner wall 214. A tear opening 219 is provided at the connection of the first inner wall 212 and the second inner wall 214;

[0063] Two first reinforcing members 217 and an optical fiber 218 are provided inside the first wing-shaped member 21. One first reinforcing member 217 is located between the first outer wall 211, the first inner wall 212 and the second outer wall 213. The other first reinforcing member 217 is located between the second inner wall 214, the third outer wall 215 and the fourth outer wall 216. The optical fiber 218 is located between the two first reinforcing members 217;

[0064] The second wing-shaped member 22 has a fifth outer wall 221, a third inner wall 222, a fourth inner wall 223, a sixth outer wall 224, a fifth inner wall 225, a seventh outer wall 226, and an eighth outer wall 227;

[0065] The lower end of the fifth outer wall 221 is connected to the upper end of the sixth outer wall 224. The fifth outer wall 221 and the sixth outer wall 224 form an angle of 120°. The lower end of the sixth outer wall 224 is connected to the upper end of the seventh outer wall 226. The sixth outer wall 224 and the seventh outer wall 226 form an angle of 120°. The upper end of the fifth outer wall 221 is connected to the upper end of the third inner wall 222. The lower end of the third inner wall 222 is connected to the upper end of the fourth inner wall 223. The fourth inner wall 223 is parallel to the sixth outer wall 224. The lower end of the fourth inner wall 223 is connected to the upper end of the fifth inner wall 225. A tear opening 219 is provided at the connection of the fourth inner wall 223 and the fifth inner wall 225;

[0066] Two first reinforcing members 217 and an optical fiber 218 are provided inside the second wing-shaped member 22. One first reinforcing member 217 is located between the fifth outer wall 221, the third inner wall 222, the fourth inner wall 223 and the sixth outer wall 224. The other first reinforcing member 217 is located between the fifth inner wall 225, the seventh outer wall 226 and the eighth outer wall 227. The optical fiber 218 is located between the two first reinforcing members 217;

[0067] The lower end of the fifth inner wall 225 is connected to the lower end of the second inner wall 214. The fifth inner wall 225 and the second inner wall 214 form an angle of 120°. The upper ends of the fourth outer wall 216 and the eighth outer wall 227 are connected by a connecting edge 24. A clamping groove 23 is formed among the first inner wall 212, the second inner wall 214, the fifth inner wall 225 and the fourth inner wall 223;

[0068] Six butterfly units 2 are clamped and fixed to form a whole. Along the clockwise direction, the first wing-shaped part 21 of the previous butterfly unit 2 is inserted into the clamping groove 23 of the subsequent butterfly unit 2;

[0069] The first outer wall 211 of the subsequent butterfly unit 2 is attached to the first inner wall 212 of the previous butterfly unit 2;

[0070] The second outer wall 213 of the subsequent butterfly unit 2 is attached to the second inner wall 214 of the previous butterfly unit 2;

[0071] The third outer wall 215 of the subsequent butterfly unit 2 is attached to the fifth inner wall 225 of the previous butterfly unit 2;

[0072] The fourth outer wall 216 of the subsequent butterfly unit 2 is attached to the fourth inner wall 223 of the previous butterfly unit 2;

[0073] The connecting edge 24 of the subsequent butterfly unit 2 is attached to the third inner wall 222 of the previous butterfly unit 2;

[0074] The third outer walls 215 and the fourth outer walls 216 of the six butterfly units 2 are located on the same regular hexagon. The outer walls 224 and the seventh outer walls 226 of the six butterfly units 2 are located on the same regular hexagon;

[0075] A filling component 3 is provided between two adjacent second wing-shaped parts 22 and the outer protective layer 1.

[0076] For the above-mentioned split-structure butterfly-shaped fiber optic cable introduced, the material of the outer protective layer 1 is high-density polyethylene or medium-density polyethylene or low-density polyethylene.

[0077] For the above-mentioned split-structure butterfly-shaped fiber optic cable introduced, the material of the first wing-shaped part 21 is flame-retardant polyolefin.

[0078] For the above-mentioned split-structure butterfly-shaped fiber optic cable introduced, the material of the first strengthening member 217 is phosphated steel wire.

[0079] For the above-mentioned split-structure butterfly-shaped fiber optic cable introduced, the material of the filling component 3 is polypropylene.

[0080] For the above-mentioned split-structure butterfly-shaped fiber optic cable introduced, the model of the optical fiber 218 is G.657.

[0081] The present invention has the following beneficial effects:

[0082] 1. The butterfly units 2 can be snap-fitted into a whole without being fixed by materials such as tying yarns, which is convenient for production.

[0083] 2. The first wing-shaped component 21 is located inside the cable core and is protected by the second wing-shaped component 22 outside, having a better protection effect.

[0084] 3. Inside the whole cable core, the second reinforcing members 228 are evenly distributed outside, and the first reinforcing members 217 are evenly distributed inside. When the optical cable is subjected to tensile force, the tensile force is more evenly distributed, having a better anti-tensile effect.

[0085] 4. When the second wing-shaped component 22 contains the second reinforcing members 228, each butterfly unit 2 can be used as a self-supporting butterfly distribution optical cable.

[0086] 5. When the second wing-shaped component 22 contains two first reinforcing members 217 and one optical fiber 218, each butterfly unit 2 can be divided into two non-self-supporting butterfly distribution optical cables for use.

[0087] 6. The tear opening 219 is located inside the cable core, and the optical cable will not be damaged from the tear opening 219 due to misoperation during laying.

[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 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, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A spliced - structure butterfly - type fiber - optic cable has a cable core and an outer sheath (1), and the outer sheath (1) is located outside the cable core. It is characterized in that: The cable core is composed of six butterfly units (2). The butterfly unit (2) is composed of a first wing-shaped component (21) and a second wing-shaped component (22). A clamping groove (23) is provided between the first wing-shaped component (21) and the second wing-shaped component (22). The six butterfly units (2) are clamped and fixed to form a whole. Along the clockwise direction, the first wing-shaped component (21) of the previous butterfly unit (2) is inserted into the clamping groove (23) of the next butterfly unit (2); two first reinforcing members (217) and an optical transmission unit composed of at least one optical fiber (218) are provided in the first wing-shaped component (21), and the optical transmission unit is located between the two first reinforcing members (217); The first wing-shaped component (21) has a first outer wall (211), a first inner wall (212), a second outer wall (213), a second inner wall (214), a third outer wall (215), and a fourth outer wall (216); The lower end of the first inner wall (212) is connected to the upper end of the second inner wall (214). The first inner wall (212) and the second inner wall (214) form an angle of 120°. The upper end of the first outer wall (211) is connected to the upper end of the first inner wall (212). The first outer wall (211) and the first inner wall (212) form an angle of 60°. The lower end of the first outer wall (211) is connected to the upper end of the second outer wall (213). The second outer wall (213) is parallel to the first inner wall (212). The lower end of the second outer wall (213) is connected to the upper end of the third outer wall (215). The third outer wall (215) is parallel to the second inner wall (214); The second wing-shaped component (22) has a fifth outer wall (221), a third inner wall (222), a fourth inner wall (223), a sixth outer wall (224), a fifth inner wall (225), a seventh outer wall (226), and an eighth outer wall (227); The lower end of the fifth outer wall (221) is connected to the upper end of the sixth outer wall (224). The fifth outer wall (221) and the sixth outer wall (224) form an angle of 120°. The lower end of the sixth outer wall (224) is connected to the upper end of the seventh outer wall (226). The sixth outer wall (224) and the seventh outer wall (226) form an angle of 120°. The upper end of the fifth outer wall (221) is connected to the upper end of the third inner wall (222). The lower end of the third inner wall (222) is connected to the upper end of the fourth inner wall (223). The fourth inner wall (223) is parallel to the sixth outer wall (224). The lower end of the fourth inner wall (223) is connected to the upper end of the fifth inner wall (225); The lower end of the fifth inner wall (225) is connected to the lower end of the second inner wall (214). The fifth inner wall (225) and the second inner wall (214) form an angle of 120°. The upper ends of the fourth outer wall (216) and the eighth outer wall (227) are connected by a connecting edge (24). The clamping groove (23) is located between the first inner wall (212), the second inner wall (214), the fifth inner wall (225), and the fourth inner wall (223); The first outer wall (211) of the latter butterfly unit (2) is attached to the first inner wall (212) of the previous butterfly unit (2); The second outer wall (213) of the latter butterfly unit (2) is attached to the second inner wall (214) of the previous butterfly unit (2); The third outer wall (215) of the latter butterfly unit (2) is attached to the fifth inner wall (225) of the previous butterfly unit (2); The fourth outer wall (216) of the latter butterfly unit (2) is attached to the fourth inner wall (223) of the previous butterfly unit (2); The connecting edge (24) of the latter butterfly unit (2) is attached to the third inner wall (222) of the previous butterfly unit (2); The third outer walls (215) and the fourth outer walls (216) of the six butterfly units (2) are located on the same regular hexagon, and the sixth outer walls (224) and the seventh outer walls (226) of the six butterfly units (2) are located on the same regular hexagon.

2. The split structure butterfly lead-in optical cable according to claim 1, wherein: One first reinforcing member (217) within the first wing-shaped member (21) is located between the first outer wall (211), the first inner wall (212), and the second outer wall (213), and the other first reinforcing member (217) is located between the second inner wall (214), the third outer wall (215), and the fourth outer wall (216).

3. A spliced - structure butterfly - type fiber optic cable according to claim 2, characterized in that: A tear opening (219) is provided at the connection of the first inner wall (212) and the second inner wall (214).

4. A spliced - structure butterfly - type fiber optic cable according to claim 3, characterized in that: A filling member (3) is provided between two adjacent second wing-shaped members (22).

5. A spliced - structure butterfly - type fiber optic cable according to claim 4, characterized in that: A circular second reinforcing member (228) is provided within the second wing-shaped member (22).

6. The split structure butterfly lead-in optical cable according to claim 5, characterized in that: The material of the second reinforcing member (228) is phosphated steel wire.

7. The split structure butterfly lead-in optical cable according to claim 6, wherein: Two first reinforcing members (217) and an optical transmission unit composed of at least one optical fiber (218) are provided within the second wing-shaped member (22), and the optical transmission unit is located between the two first reinforcing members (217).

8. A spliced - structure butterfly - type fiber - optic cable according to claim 7, characterized in that: One first reinforcing member (217) is located between the fifth outer wall (221), the third inner wall (222), the fourth inner wall (223), and the sixth outer wall (224), and the other first reinforcing member (217) is located between the fifth inner wall (225), the seventh outer wall (226), and the eighth outer wall (227).

9. A spliced - structure butterfly - type fiber - optic cable according to claim 8, characterized in that: A tear opening (219) is provided at the connection of the fourth inner wall (223) and the fifth inner wall (225).

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