Optical fiber ribbon optical cable with butterfly-shaped units

Abstract

The invention belongs to the technical field of optical cables, and particularly relates to an optical fiber ribbon optical cable with butterfly-shaped units, the optical fiber ribbon optical cable is provided with an outer protective layer and an inner protective layer, the inner protective layer is located in the outer protective layer, the outer protective layer is composed of four butterfly-shaped units and four outer protective layer side edges, and in the same cross section, the four outer protective layer side edges are located on the four edges of a square respectively. The four butterfly-shaped units are respectively located at four vertex angles of the square, a first U-shaped cavity and a second U-shaped cavity are formed in the inner protective layer, the first U-shaped cavity and the second U-shaped cavity are mutually nested, and an optical fiber ribbon is arranged in at least one of the first U-shaped cavity and the second U-shaped cavity; the optical fiber has the beneficial effects of simple structure, good mechanical property, good optical cable adaptability, high fiber core capacity and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of optical cables, and in particular relates to an optical fiber ribbon cable with a butterfly-shaped unit. Background Art

[0002] With the growing demand for broadband and high-speed access, the demand for high-density optical fibers in the same cable is increasing day by day. Due to the application of new technologies such as 5G, users' access requirements for optical and electrical signals are becoming more diverse.

[0003] In the prior art, CN118068501A discloses a butterfly-shaped optical cable with an optical fiber ribbon, which has a receiving component, an optical fiber ribbon, four butterfly-shaped units, a reinforcing member, a protective layer, and an outer sheath. The receiving component is characterized in that the receiving component is composed of a base strip with a U-shaped cross section and four combined components, and the combined components are composed of first to fourth dividing strips that are parallel to each other and are sequentially spaced, and there are grooves between adjacent dividing strips. The combined components extend outward from the outer surface of the base strip, and the base strip has a central cavity inside; an angle cavity is formed between adjacent combined components; the reinforcing member is located in the central cavity, the butterfly-shaped units are located in the angle cavity, and the optical fiber ribbon is located in the groove. The present invention also discloses an optical fiber ribbon cable and an optoelectronic hybrid optical cable.

[0004] The above-mentioned prior art has the following drawbacks: 1. The structure is relatively complex; 2. The butterfly-shaped unit cannot be used as a part of the protective layer to protect the internal optical fiber ribbon; 3. The space inside the accommodating component is relatively small. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to disclose an optical fiber ribbon cable with a butterfly-shaped unit, which is achieved by adopting the following technical solutions.

[0006] An optical fiber ribbon cable with a butterfly-shaped unit, comprising an outer sheath and an inner sheath, wherein the inner sheath is located inside the outer sheath, the outer sheath is composed of four butterfly-shaped units and four outer sheath side edges, the butterfly-shaped unit is composed of a butterfly-shaped unit body, two reinforcement members and an optical fiber, the two reinforcement members and the optical fiber are located inside the butterfly-shaped unit body, and the two reinforcement members are located on both sides of the optical fiber; In the same cross section, the four outer sheath side edges are respectively located at the four sides of the square, the optical fibers in the four butterfly-shaped units are respectively located at the four vertex corners of the square, the two ends of the outer sheath side edges are respectively connected to the butterfly unit bodies of the corresponding two butterfly-shaped units, and a rectangular outer sheath cavity is formed inside the outer sheath; The inner sheath is located in the outer sheath cavity, and a first U-shaped cavity and a second U-shaped cavity are formed in the inner sheath. The first U-shaped cavity and the second U-shaped cavity are nested with each other, and an optical fiber ribbon is arranged inside at least one of the first U-shaped cavity and the second U-shaped cavity.

[0007] The optical fiber ribbon cable with a butterfly-shaped unit described above, the inner sheath is integrally formed by the right upper wall, the right lower wall, the left upper wall, the left lower wall, the first inner wall, the second inner wall, the third inner wall, the first connecting wall, the second connecting wall, the third connecting wall and the fourth connecting wall; The right lower wall, the left upper wall, the first inner wall, the second inner wall, and the third inner wall are parallel, the second inner wall and the third inner wall are located between the right lower wall and the first inner wall, the right upper wall, the left lower wall, the first connecting wall, the second connecting wall, the third connecting wall, and the fourth connecting wall are parallel, the two ends of the right upper wall are respectively connected to the right lower wall and the right end of the first inner wall, the right upper wall is perpendicular to the right lower wall, the two ends of the first connecting wall are respectively connected to the right ends of the second inner wall and the third inner wall, the two ends of the second connecting wall are respectively connected to the left ends of the first inner wall and the third inner wall, the right end of the fourth connecting wall is connected to the right end of the right lower wall, and the left end of the fourth connecting wall is connected to the side wall of the second inner wall, the first inner wall and the third inner wall are located between the left upper wall and the second inner wall, the two ends of the left lower wall are respectively connected to the left end of the second inner wall of the left upper wall, the left end of the third connecting wall is connected to the right end of the left upper wall, and the right end of the third connecting wall is connected to the side wall of the first inner wall; A first U-shaped cavity is formed between the right upper wall, the right lower wall, the first inner wall, the second inner wall, the third inner wall, the first connecting wall, the second connecting wall and the fourth connecting wall; A second U-shaped cavity is formed between the left upper wall, the left lower wall, the first inner wall, the second inner wall, the third inner wall, the first connecting wall, the second connecting wall and the third connecting wall.

[0008] In the above-mentioned optical fiber ribbon cable with butterfly-shaped units, the first U-shaped cavity is composed of a first cavity, a second cavity and a third cavity, the first cavity is between the first inner wall and the third inner wall, the third cavity is between the right lower wall and the second inner wall, and the second cavity is between the right upper wall and the first connecting wall; The second U-shaped cavity is composed of the fourth cavity, the fifth cavity and the sixth cavity. The fourth cavity is between the left upper wall and the first inner wall, the sixth cavity is between the second inner wall and the third inner wall, and the fifth cavity is between the left lower wall and the second connecting wall.

[0009] In the above-mentioned optical fiber ribbon cable with butterfly-shaped units, at least one optical fiber ribbon is respectively arranged in the first cavity, the third cavity, the fourth cavity and the sixth cavity.

[0010] In the optical fiber ribbon cable with butterfly-shaped units described above, at least one optical fiber ribbon is disposed in the second cavity and the fifth cavity.

[0011] In the above-mentioned optical fiber ribbon cable with butterfly-shaped units, at least one electrical unit is arranged in the first U-shaped cavity, and at least one optical fiber ribbon is arranged in the second U-shaped cavity.

[0012] In the optical fiber ribbon cable with the butterfly-shaped unit described above, the first connecting wall and the third connecting wall are located on the same straight line, and the second connecting wall and the fourth connecting wall are located on the same straight line.

[0013] In the above-mentioned optical fiber ribbon cable with butterfly-shaped units, the right upper wall, the right lower wall, the left upper wall and the left lower wall are respectively in contact with the four inner walls of the outer sheath cavity.

[0014] In the optical fiber ribbon cable with the butterfly-shaped unit described above, the material of the butterfly-shaped unit body and the outer sheath side is flame-retardant polyolefin.

[0015] In the optical fiber ribbon cable with the butterfly-shaped unit described above, the butterfly-shaped unit body and the outer sheath side are integrally formed.

[0016] In the above-mentioned optical fiber ribbon cable with butterfly-shaped units, the reinforcement member is a phosphating steel wire.

[0017] In the optical fiber ribbon cable with butterfly-shaped units described above, the optical fiber is a multimode optical fiber or a single-mode optical fiber.

[0018] The optical fiber ribbon cable with the butterfly-shaped unit described above is formed by connecting at least two optical fibers.

[0019] In the above-mentioned optical fiber ribbon cable with butterfly-shaped units, the material of the inner sheath is polyethylene.

[0020] In the optical fiber ribbon cable with butterfly-shaped units described above, the electrical unit is composed of a conductor and an insulating layer extruded outside the conductor.

[0021] In the optical fiber ribbon cable with a butterfly-shaped unit described above, the butterfly-shaped unit has a tear groove opening outward, and the depth of the tear groove is greater than 1 / 4 of the height of the butterfly-shaped unit and less than 1 / 2 of the height of the butterfly-shaped unit.

[0022] In the optical fiber ribbon cable with butterfly-shaped units described above, a groove is formed between two adjacent butterfly-shaped units and the side edge of the outer sheath, and the depth of the groove is greater than twice the corresponding side edge of the outer sheath.

[0023] The present invention has the following beneficial effects: 1. It has a variety of transmission units such as butterfly unit, optical fiber ribbon and electrical unit, which can better meet the needs of users.

[0024] 2. The butterfly unit is located in the outer sheath, which is convenient for the use of the butterfly unit. The reinforcement inside the butterfly unit is located on the periphery of the entire optical cable. When in use, it is not easy to affect the internal optical fiber ribbon.

[0025] 3. The reinforcements of the four butterfly-shaped units provide tensile strength for the optical cable, and the tensile performance of the optical cable is better.

[0026] 4. The inner sheath has a structure in which two U-shaped cavities are nested with each other, which can accommodate different types of electrical units or optical fiber ribbons. The U-shaped cavity has a larger volume and can accommodate more electrical units or optical fiber ribbons.

[0027] 5. The design of the U-shaped cavity enables different types of optical fiber ribbons to be placed in the U-shaped cavity without the need to separate the U-shaped cavity.

[0028] 6. There is a groove between two adjacent butterfly-shaped units and the side of the outer sheath, which not only saves the material of the outer sheath and reduces the weight of the optical cable, but also makes the side of the outer sheath concave inward to protect the side of the outer sheath.

[0029] 7. The butterfly unit has a tearing groove opening outward, which facilitates the stripping of the optical fiber of the butterfly unit and prevents accidental tearing of the tearing groove. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0031] Figure 2 It is a front view of embodiment 1 of the present invention.

[0032] Figure 3 It is a front view of the inner protective layer of Example 1 of the present invention.

[0033] Figure 4 It is a front view of the outer sheath of Example 1 of the present invention.

[0034] Figure 5 It is a front view of embodiment 2 of the present invention.

[0035] Figure 6 It is a front view of the inner sheath and the internal optical fiber ribbon of Example 2 of the present invention.

[0036] Figure 7 It is a front view of embodiment 3 of the present invention.

[0037] Figure 8 It is a front view of the inner sheath, the internal optical fiber ribbon and the electrical unit of Example 3 of the present invention.

[0038] In the figure, 1. outer sheath, 11. outer sheath side, 12. outer sheath cavity, 13. butterfly unit, 131. butterfly unit body, 132. reinforcement, 133. optical fiber, 2. inner sheath, 21. right upper wall, 22. right lower wall, 23. left upper wall, 24. left lower wall, 25. first inner wall, 26. second inner wall, 27. third inner wall, 28. first connecting wall, 29. second connecting wall, 210. third connecting wall, 211. fourth connecting wall, 212. first cavity, 213. second cavity, 214. third cavity, 215. fourth cavity, 216. fifth cavity, 217. sixth cavity, 3. optical fiber ribbon, 4. electrical unit. DETAILED DESCRIPTION

[0039] Example 1: Figures 1 to 4, an optical fiber ribbon cable with butterfly-shaped units, comprising an outer sheath 1 and an inner sheath 2, the inner sheath 2 being located inside the outer sheath 1, the outer sheath 1 being composed of four butterfly-shaped units 13 and four outer sheath side edges 11, the butterfly-shaped unit 13 being composed of a butterfly-shaped unit body 131, two reinforcement members 132 and an optical fiber 132, the two reinforcement members 132 and the optical fiber 132 being located inside the butterfly-shaped unit body 131, and the two reinforcement members 132 being located on both sides of the optical fiber 132; in the same cross section, the four outer sheath side edges 11 are respectively located at the four sides of a square, the optical fibers 132 in the four butterfly-shaped units are respectively located at the four vertices of the square, and the two ends of the outer sheath side edges 11 are respectively connected to the butterfly units of the corresponding two butterfly-shaped units 13. The main body 131 is connected, and a rectangular outer protective layer cavity 12 is formed inside the outer protective layer 1; the inner protective layer 2 is located in the outer protective layer cavity 12, and the inner protective layer 2 is formed by the right upper wall 21, the right lower wall 22, the left upper wall 23, the left lower wall 24, the first inner wall 25, the second inner wall 26, the third inner wall 27, the first connecting wall 28, the second connecting wall 29, the third connecting wall 210 and the fourth connecting wall 211; the right lower wall 22, the left upper wall 23, the first inner wall 25, the second inner wall 26, and the third inner wall 27 are parallel, the second inner wall 26 and the third inner wall 27 are located between the right lower wall 22 and the first inner wall 25, the right upper wall 21, the left lower wall 24, the first connecting wall 28, the second connecting wall 29 The third connecting wall 210 is parallel to the fourth connecting wall 211, the two ends of the right upper wall 21 are respectively connected to the right lower wall 22 and the right end of the first inner wall 25, the right upper wall 21 is perpendicular to the right lower wall 22, the two ends of the first connecting wall 28 are respectively connected to the right ends of the second inner wall 26 and the third inner wall 27, the two ends of the second connecting wall 29 are respectively connected to the left ends of the first inner wall 25 and the third inner wall 27, the right end of the fourth connecting wall 211 is connected to the right end of the right lower wall 22, the left end of the fourth connecting wall 211 is connected to the side wall of the second inner wall 26, the first inner wall 25 and the third inner wall 27 are located between the left upper wall 23 and the second inner wall 26, and the two ends of the left lower wall 24 are respectively connected to the left upper wall 23 and the second inner wall The left end of the third connecting wall 210 is connected to the right end of the left upper wall 23, the right end of the third connecting wall 210 is connected to the side wall of the first inner wall 25, a first U-shaped cavity is formed between the right upper wall 21, the right lower wall 22, the first inner wall 25, the second inner wall 26, the third inner wall 27, the first connecting wall 28, the second connecting wall 29 and the fourth connecting wall 211, the first U-shaped cavity is composed of the first cavity 212, the second cavity 213 and the third cavity 214, the first cavity 212 is between the first inner wall 25 and the third inner wall 27, the third cavity 214 is between the right lower wall 22 and the second inner wall 26, and the second cavity 213 is between the right upper wall 21 and the first connecting wall 28;A second U-shaped cavity is formed between the left upper wall 23, the left lower wall 24, the first inner wall 25, the second inner wall 26, the third inner wall 27, the first connecting wall 28, the second connecting wall 29, and the third connecting wall 210. The second U-shaped cavity is composed of a fourth cavity 215, a fifth cavity 216, and a sixth cavity 217. The fourth cavity 215 is between the left upper wall 23 and the first inner wall 25, the sixth cavity 217 is between the second inner wall 26 and the third inner wall 27, and the left lower wall 24 is between the first inner wall 25 and the second inner wall 26. The fifth cavity 216 is between the wall 24 and the second connecting wall 29; the first connecting wall 28 and the third connecting wall 210 are located on the same straight line, and the second connecting wall 29 and the fourth connecting wall 211 are located on the same straight line; the right upper wall 21, the right lower wall 22, the left upper wall 23, and the left lower wall 24 are respectively attached to the four inner walls of the outer sheath cavity 12; at least one optical fiber ribbon is arranged in the first cavity 212, the third cavity 214, the fourth cavity 215, and the sixth cavity 217. ;

[0040] Example 2: Figure 5 and Figure 6 , and refer to Figure 3 and Figure 4 This embodiment is basically the same as the embodiment 1, except that: an electrical unit cavity is formed between the outer sheath 1 and the first inner wall 25 and the third connecting wall 210, an electrical unit cavity is formed between the outer sheath 1 and the second inner wall 26 and the fourth connecting wall 211, an electrical unit 4 is arranged in the electrical unit cavity, and at least one optical fiber ribbon 3 is respectively arranged in the second cavity 213 and the fifth cavity 216.

[0041] Example 3: Figure 7 and Figure 8 , and refer to Figure 3 and Figure 4 This embodiment is basically the same as the embodiment 1, except that at least one electrical unit 4 is disposed in the first U-shaped cavity, and at least one optical fiber ribbon 3 is disposed in each of the fourth cavity 215 , the fifth cavity 216 , and the sixth cavity 217 .

[0042] In the optical fiber ribbon cable with the butterfly-shaped unit described above, the material of the butterfly-shaped unit body 131 and the outer sheath side 11 is flame-retardant polyolefin.

[0043] In the optical fiber ribbon cable with the butterfly-shaped unit described above, the butterfly-shaped unit body 131 and the outer sheath side 11 are integrally formed.

[0044] In the above-mentioned optical fiber ribbon cable with butterfly-shaped units, the reinforcement member 132 is a phosphating steel wire.

[0045] In the above-mentioned optical fiber ribbon cable with butterfly-shaped units, the optical fiber 132 is a multi-mode optical fiber or a single-mode optical fiber.

[0046] In the above-mentioned optical fiber ribbon cable with butterfly-shaped units, the optical fiber ribbon 3 is formed by connecting at least two optical fibers 132 together.

[0047] In the above-mentioned optical fiber ribbon cable with butterfly-shaped units, the material of the inner sheath 2 is polyethylene.

[0048] In the optical fiber ribbon cable with butterfly-shaped units described above, the electrical unit 4 is composed of a conductor and an insulating layer extruded outside the conductor.

[0049] In the optical fiber ribbon cable with a butterfly-shaped unit described above, the butterfly-shaped unit 13 has a tear groove opening outward, the depth of the tear groove is greater than 1 / 4 of the height of the butterfly-shaped unit 13 and less than 1 / 2 of the height of the butterfly-shaped unit 13, and the height of the butterfly-shaped unit 13 refers to the distance between the upper end of the butterfly-shaped unit 13 and the lower end of the butterfly-shaped unit 13 when the line connecting the axes of the two reinforcement members 132 of the butterfly-shaped unit 13 is placed horizontally.

[0050] In the above-mentioned optical fiber ribbon cable with butterfly-shaped units, a groove is formed between two adjacent butterfly-shaped units 13 and the outer sheath side 11 , and the depth of the groove is greater than twice the corresponding outer sheath side 11 .

[0051] The present invention has the following beneficial effects: 1. It has a variety of transmission units such as butterfly unit 13, optical fiber ribbon 132 and electrical unit 4, which can better meet the needs of users.

[0052] 2. The butterfly unit 13 is located in the outer sheath 1, which is convenient for the use of the butterfly unit. The reinforcing member 132 in the butterfly unit is located on the periphery of the entire optical cable, and is not easy to affect the internal optical fiber ribbon 3 when in use.

[0053] 3. The reinforcement members 132 of the four butterfly-shaped units 13 provide tensile strength for the optical cable, and the tensile performance of the optical cable is better.

[0054] 4. The inner sheath 2 has a structure in which two U-shaped cavities are nested with each other, and different types of electrical units or optical fiber ribbons can be placed. The U-shaped cavity has a larger volume and can accommodate more electrical units or optical fiber ribbons.

[0055] 5. The design of the U-shaped cavity enables different types of optical fiber ribbons to be placed in the U-shaped cavity without the need to separate the U-shaped cavity.

[0056] 6. There is a groove between two adjacent butterfly units 13 and the outer sheath side 11, which not only saves the material of the outer sheath 1 and reduces the weight of the optical cable, but also makes the outer sheath side 11 recessed inward to protect the outer sheath side 11.

[0057] 7. The butterfly-shaped unit 13 has a tearing groove opening outward, which facilitates the stripping of the optical fiber 132 of the butterfly-shaped unit 13 and prevents the tearing groove from being accidentally torn.

[0058] The present application can be used as an intelligent sensor or intelligent sensing element; since it can transmit voice and images, it can also be used as a physical sensor, such as a voice sensor or an image sensor; since it transmits optical signals through the principle of total reflection, it can also be used as a distance sensor; the optical fiber in the present application is an optical waveguide itself, so it can be used as an optical waveguide, such as an array optical waveguide or a diffraction optical waveguide; the present application can also be used in the field of optical computing, as part of optical chip computing, in the fields of optical computing, optical computing, and optical network computing.

[0059] 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. An optical fiber ribbon cable with a butterfly unit, comprising an outer sheath (1) and an inner sheath (2), wherein the inner sheath (2) is located inside the outer sheath (1), characterized in that: The outer sheath (1) is composed of four butterfly-shaped units (13) and four outer sheath side edges (11); the butterfly-shaped unit (13) is composed of a butterfly-shaped unit body (131), two reinforcement members (132) and an optical fiber (132); the two reinforcement members (132) and the optical fiber (132) are located inside the butterfly-shaped unit body (131), and the two reinforcement members (132) are located on both sides of the optical fiber (132); In the same cross section, four outer sheath side edges (11) are respectively located at four sides of a square, and the optical fibers (132) in the four butterfly-shaped units are respectively located at four vertices of the square. The two ends of the outer sheath side edge (11) are respectively connected to the butterfly unit bodies (131) of the corresponding two butterfly units (13), and a rectangular outer sheath cavity (12) is formed inside the outer sheath (1), and the butterfly unit body (131) and the outer sheath side edge (11) are integrally formed. The inner sheath (2) is located in the outer sheath cavity (12), and a first U-shaped cavity and a second U-shaped cavity are formed in the inner sheath (2). The first U-shaped cavity and the second U-shaped cavity are nested with each other, and an optical fiber ribbon (3) is arranged inside at least one of the first U-shaped cavity and the second U-shaped cavity.

2. The optical fiber ribbon cable with butterfly-shaped units according to claim 1, characterized in that: The inner protective layer (2) is integrally formed by a right upper wall (21), a right lower wall (22), a left upper wall (23), a left lower wall (24), a first inner wall (25), a second inner wall (26), a third inner wall (27), a first connecting wall (28), a second connecting wall (29), a third connecting wall (210) and a fourth connecting wall (211); The right lower wall (22), the left upper wall (23), the first inner wall (25), the second inner wall (26), and the third inner wall (27) are parallel, the second inner wall (26) and the third inner wall (27) are located between the right lower wall (22) and the first inner wall (25), the right upper wall (21), the left lower wall (24), the first connecting wall (28), the second connecting wall (29), the third connecting wall (210), and the fourth connecting wall (211) are parallel, the two ends of the right upper wall (21) are respectively connected to the right lower wall (22) and the right end of the first inner wall (25), the right upper wall (21) is perpendicular to the right lower wall (22), the two ends of the first connecting wall (28) are respectively connected to the second inner wall (26), the third inner wall (25), and the fourth connecting wall (211). The right end of the second connecting wall (29) is connected to the left end of the first inner wall (25) and the third inner wall (27), the two ends of the second connecting wall (29) are respectively connected to the left ends of the first inner wall (25) and the third inner wall (27), the right end of the fourth connecting wall (211) is connected to the right end of the right lower wall (22), the left end of the fourth connecting wall (211) is connected to the side wall of the second inner wall (26), the first inner wall (25) and the third inner wall (27) are located between the left upper wall (23) and the second inner wall (26), the two ends of the left lower wall (24) are respectively connected to the left ends of the left upper wall (23) and the second inner wall (26), the left end of the third connecting wall (210) is connected to the right end of the left upper wall (23), and the right end of the third connecting wall (210) is connected to the side wall of the first inner wall (25); A first U-shaped cavity is formed between the right upper wall (21), the right lower wall (22), the first inner wall (25), the second inner wall (26), the third inner wall (27), the first connecting wall (28), the second connecting wall (29) and the fourth connecting wall (211); A second U-shaped cavity is formed between the left upper wall (23), the left lower wall (24), the first inner wall (25), the second inner wall (26), the third inner wall (27), the first connecting wall (28), the second connecting wall (29), and the third connecting wall (210).

3. The optical fiber ribbon cable with butterfly-shaped units according to claim 2, characterized in that: The first U-shaped cavity is composed of a first cavity (212), a second cavity (213) and a third cavity (214); the first cavity (212) is between the first inner wall (25) and the third inner wall (27); the third cavity (214) is between the right lower wall (22) and the second inner wall (26); and the second cavity (213) is between the right upper wall (21) and the first connecting wall (28); The second U-shaped cavity is composed of a fourth cavity (215), a fifth cavity (216) and a sixth cavity (217); the fourth cavity (215) is between the left upper wall (23) and the first inner wall (25); the sixth cavity (217) is between the second inner wall (26) and the third inner wall (27); and the fifth cavity (216) is between the left lower wall (24) and the second connecting wall (29).

4. The optical fiber ribbon cable with butterfly-shaped units according to claim 3, characterized in that: At least one optical fiber ribbon is respectively disposed in the first cavity (212), the third cavity (214), the fourth cavity (215) and the sixth cavity (217).

5. The optical fiber ribbon cable with butterfly-shaped units according to claim 4, characterized in that: At least one optical fiber ribbon (3) is arranged in the second cavity (213) and the fifth cavity (216).

6. The optical fiber ribbon cable with butterfly-shaped units according to claim 3, characterized in that: At least one electrical unit (4) is arranged in the first U-shaped cavity, and at least one optical fiber ribbon (3) is arranged in the second U-shaped cavity.

7. An optical fiber ribbon cable with a butterfly-shaped unit according to claim 5 or claim 6, characterized in that: The first connecting wall (28) and the third connecting wall (210) are located on the same straight line, and the second connecting wall (29) and the fourth connecting wall (211) are located on the same straight line.

8. The optical fiber ribbon cable with butterfly-shaped units according to claim 7, characterized in that: The right upper wall (21), the right lower wall (22), the left upper wall (23) and the left lower wall (24) are respectively fitted with four inner walls of the outer protective layer cavity (12).

9. The optical fiber ribbon cable with butterfly-shaped units according to claim 8, characterized in that: The butterfly-shaped unit (13) has a tearing groove opening outward, and the depth of the tearing groove is greater than 1 / 4 of the height of the butterfly-shaped unit (13) and less than 1 / 2 of the height of the butterfly-shaped unit (13).

10. The optical fiber ribbon cable with butterfly-shaped units according to claim 9, characterized in that: A groove is formed between two adjacent butterfly-shaped units (13) and the outer protective layer side edge (11), and the depth of the groove is greater than twice the corresponding outer protective layer side edge (11).

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