Optical fiber ribbon cable and bow-type drop cable

Abstract

The present application relates to the field of cables, and discloses an optical fiber ribbon cable, comprising four buffer tubes (2), wherein at least one optical fiber ribbon (3) is arranged in each buffer tube (2); and further comprising four protective members (1), wherein the four protective members (1) are connected in a pairwise embedded mode to form a closed protective layer, four containing cavities are formed in the protective layer, the buffer tubes are arranged in the four containing cavities, and at least one optical fiber ribbon is arranged in each buffer tube. The present application has beneficial effects such as a simple structure, easy construction, a good protection effect, low production costs, and strong mechanical performance. The present application further discloses a bow-type drop cable.

Description

Optical fiber ribbon cable and butterfly-shaped introduction cable Technical Field

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

[0002] Butterfly-shaped drop cables are used for the last mile of fiber-optic access to the home. Due to their small outer diameter, light weight, low cost, good flexibility and bending performance, and easy installation, they are widely used in application environments such as smart buildings, digital communities, campus networks, and local area networks.

[0003] In the prior art, CN212570461U discloses an improved butterfly optical cable having an outer sheath and four optical communication units, characterized in that the outer sheath is composed of an outer sheath body, the outer sheath body is in the shape of an "8", a first cavity is formed on the right side of the outer sheath body, and a second cavity is formed on the left side, a partition component extends from the middle of the outer sheath body into the first cavity and the second cavity respectively, a first clamping component is provided at the end of the outer sheath body corresponding to the first cavity and the second cavity respectively, two first clamping grooves corresponding to the first clamping component are provided on the upper and lower surfaces of the middle part of the outer wall of the outer sheath body, and the two first clamping components are respectively clamped into the corresponding two first clamping grooves, the two optical communication units are located in the first cavity, and the other two optical communication units are located in the second cavity, the distance between the end of the partition component and the inner wall of the first cavity or the second cavity is (0, the radius of the optical communication unit), and the optical communication unit is composed of a loose tube and at least one optical fiber located in the loose tube. Technical issues

[0004] The above-mentioned prior arts all have the following drawbacks: 1. The protection capability of the optical cable is poor; 2. The clamping structure of the outer sheath is easily detached due to compression. Technical Solutions

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

[0006] An optical fiber ribbon cable, having four loose tubes, each of which is provided with at least one optical fiber ribbon, is characterized in that: it also has four protective components, the protective components are composed of a first longitudinal protective layer, a first transverse protective layer, a second longitudinal protective layer, a third longitudinal protective layer, a second transverse protective layer, a third transverse protective layer, a fourth longitudinal protective layer and a fourth transverse protective layer, the first longitudinal protective layer, the second longitudinal protective layer, the third longitudinal protective layer and the fourth longitudinal protective layer are parallel, the first transverse protective layer, the second transverse protective layer, the third transverse protective layer and the fourth transverse protective layer are parallel, the first longitudinal protective layer, the first transverse protective layer, the second transverse protective layer, the third transverse protective layer and the fourth transverse protective layer are parallel, One horizontal guard layer is vertical, the lower end of the first longitudinal guard layer is connected to the left end of the fourth horizontal guard layer, the upper end of the first longitudinal guard layer is connected to the left end of the first horizontal guard layer, the right end of the first horizontal guard layer is connected to the upper end of the second longitudinal guard layer, the lower end of the second longitudinal guard layer is connected to the left end of the second horizontal guard layer, the right end of the second horizontal guard layer is connected to the lower end of the third longitudinal guard layer, the lower end of the third longitudinal guard layer is connected to the left end of the third horizontal guard layer, the right end of the third horizontal guard layer is connected to the upper end of the fourth longitudinal guard layer, and an embedded space is formed between the second longitudinal guard layer and the third longitudinal guard layer. A groove is formed between the third longitudinal protective layer, the third transverse protective layer and the fourth longitudinal protective layer, and a first cavity is formed between the first longitudinal protective layer, the first transverse protective layer, the second longitudinal protective layer and the fourth transverse protective layer; the length of the third longitudinal protective layer plus the thickness of the second transverse protective layer plus the thickness of the third transverse protective layer is less than the length of the fourth longitudinal protective layer plus the thickness of the third transverse protective layer, the length of the fourth longitudinal protective layer plus the thickness of the third transverse protective layer is less than the length of the first transverse protective layer minus the thickness of the first longitudinal protective layer minus the thickness of the second longitudinal protective layer, the length of the third transverse protective layer is less than the length of the first longitudinal protective layer, the length of the fourth transverse protective layer is less than the length of the third longitudinal protective layer plus the thickness of the third transverse protective layer, the length of the first longitudinal protective layer plus the thickness of the first transverse protective layer is the same as the length of the first transverse protective layer; in a clockwise direction, the fourth transverse protective layer of the previous protective component is embedded in the embedding groove of the latter protective component, the third longitudinal protective layer, the third transverse protective layer and the fourth longitudinal protective layer of the latter protective component are located in the first cavity of the previous protective component, and the loose sleeve is located in the second cavity.

[0007] The optical fiber ribbon cable described above is characterized in that a central cavity is formed in the middle of the four protective components, a rectangular central reinforcement member is provided in the central cavity, and the four side surfaces of the central reinforcement member are respectively in contact with the corresponding second transverse protective layer.

[0008] The optical fiber ribbon cable described above is characterized in that the first longitudinal protective layer and the first transverse protective layer have the same thickness.

[0009] The optical fiber ribbon cable described above is characterized in that the first longitudinal protective layer of the preceding protective component and the third transverse protective layer of the following protective component are bonded together.

[0010] The optical fiber ribbon cable described above is characterized in that the material of the loose tube is polybutylene terephthalate.

[0011] The optical fiber ribbon cable described above is characterized in that the optical fiber ribbon is formed by combining at least two optical fibers.

[0012] A butterfly-shaped optical cable introduction has a butterfly-shaped introduction unit, wherein the butterfly-shaped introduction unit is composed of a butterfly-shaped unit sheath, two parallel butterfly-shaped unit reinforcements and an optical fiber, the two butterfly-shaped unit reinforcements and the optical fiber are located in the butterfly-shaped unit sheath, the optical fiber is located between the two butterfly-shaped unit reinforcements, and a first tear is formed on the outer wall of the butterfly-shaped unit sheath on both sides of the optical fiber. In the same cross-section, the connection line of the two first tear is perpendicular to the connection line of the axis of the two butterfly-shaped unit reinforcements. It is characterized in that: it also has four protective components, which are composed of a first longitudinal protective layer, a first transverse protective layer, a second longitudinal protective layer, a second transverse protective layer and a fourth transverse protective layer. The first longitudinal protective layer, the second longitudinal protective layer and the left side of the butterfly-shaped introduction unit are parallel, the first transverse protective layer, the second transverse protective layer and the fourth transverse protective layer are parallel, the first longitudinal protective layer and the first transverse protective layer are perpendicular, the lower end of the first longitudinal protective layer is connected to the left end of the fourth transverse protective layer, and the upper end of the first longitudinal protective layer is perpendicular to the left end of the first transverse protective layer. The right end of the first transverse protective layer is connected to the upper end of the second longitudinal protective layer, the lower end of the second longitudinal protective layer is connected to the left end of the second transverse protective layer, and the right end of the second transverse protective layer is connected to the lower left end of the butterfly introduction unit. An embedding groove is formed between the second longitudinal protective layer and the butterfly introduction unit, and a first cavity is formed between the first longitudinal protective layer, the first transverse protective layer, the second longitudinal protective layer and the fourth transverse protective layer; the height of the butterfly introduction unit is less than the length of the first transverse protective layer minus the thickness of the first longitudinal protective layer minus the thickness of the second longitudinal protective layer, the length of the butterfly introduction unit is less than the length of the first longitudinal protective layer, the length of the fourth transverse protective layer is less than the height of the butterfly introduction unit minus the thickness of the second transverse protective layer, and the length of the first longitudinal protective layer plus the thickness of the first transverse protective layer is the same as the length of the first transverse protective layer; in a clockwise direction, the fourth transverse protective layer of the previous protective component is embedded in the embedding groove of the next protective component, and the butterfly introduction unit of the next protective component is located in the first cavity of the previous protective component.

[0013] The butterfly-shaped optical cable introduced above is characterized in that a central cavity is formed in the middle of the four protective components, a rectangular central reinforcement member is provided in the central cavity, and the four side surfaces of the central reinforcement member are respectively in contact with the corresponding second transverse protective layer.

[0014] The butterfly-shaped optical cable drop described above is characterized in that the first longitudinal protective layer and the first transverse protective layer have the same thickness.

[0015] The butterfly-shaped optical cable introduced above is characterized in that a second tearing opening is provided on each side of the connection between the second transverse protective layer and the butterfly-shaped introduction unit for quickly separating the second transverse protective layer and the butterfly-shaped introduction unit.

[0016] The butterfly-shaped optical cable introduced above is characterized in that an electrical unit is further provided in each embedding slot. Beneficial effects

[0017] The present invention has the following beneficial effects: 1. The protective component can be pre-extruded and the optical cable can be spliced ​​in a cooled state later, which makes it easy to replace the protective component when it is damaged. Unlike the outer sheath of an ordinary optical cable that is extruded once, it is not necessary to peel it and re-extrude it when the outer sheath is damaged, which saves materials and reduces costs.

[0018] 2. The protective components are embedded in each other, so that the loose tube or butterfly introduction unit inside the optical cable can be removed without using tools during construction and maintenance, which is convenient for construction and maintenance.

[0019] 3. The central reinforcement member with a shaped center provides the optical cable with stronger tensile performance, and also provides the optical cable with stronger resistance to lateral pressure. It can also prevent the protective components from deforming and causing the optical cable structure to fall apart when subjected to strong pressure.

[0020] 4. An electrical unit is also provided in the embedded slot, which enables the optical cable to transmit both light and electricity simultaneously. When the electrical unit needs to be removed, just pull out the fourth horizontal protective layer from the embedded slot, which is convenient for construction.

[0021] 5. In the optical fiber ribbon cable, the protective components are embedded with each other to form four second cavities for placing loose tubes. The loose tubes are separated from each other and do not touch each other, thereby avoiding mutual squeezing between the loose tubes.

[0022] 6. In optical fiber ribbon cables, each loose tube is protected by a layer of protective components on the outside, providing stronger protection for the optical fiber inside the loose tube.

[0023] 7. In the rectangular ribbon butterfly-shaped introduction optical cable, the protective component and the butterfly-shaped introduction unit are formed in one piece. The cross-section of the first longitudinal protective layer, the first transverse protective layer, the second longitudinal protective layer and the fourth transverse protective layer forms a hook shape, which can be used to hang the rope during construction. No other tools are required, and it can achieve a self-supporting effect.

[0024] 8. In the rectangular ribbon butterfly-shaped lead-in optical cable, a second tearing opening is provided on each side of the connection between the second transverse protective layer and the butterfly-shaped lead-in unit. When the protective component is removed from the second tearing opening, a GJXH butterfly cable with a conventional structure can be obtained. This cable is suitable for all laying methods of GJXH butterfly cables with a conventional structure and has strong applicability.

[0025] 9. In the rectangular butterfly-shaped optical cable, the protective components are embedded in each other to form four first cavities, and the butterfly-shaped introduction units are located in the first cavities. The butterfly-shaped introduction units are separated from each other and do not contact each other, thereby avoiding the mutual squeezing effect between the butterfly-shaped introduction units.

[0026] 10. In rectangular ribbon butterfly-shaped introduction optical cables, each butterfly-shaped introduction unit is protected by a layer of protective components on the outside, providing stronger protection for the optical fiber inside the butterfly-shaped introduction unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic diagram of the end face structure of Example 1.

[0028] FIG2 is a schematic structural diagram of the protection component of Example 1.

[0029] FIG3 is a schematic diagram of the end face structure of Example 2.

[0030] FIG4 is a schematic diagram of the end face structure of Example 3.

[0031] FIG5 is a schematic structural diagram of the protection component of Example 3.

[0032] FIG6 is a schematic structural diagram of the protection component of Example 4.

[0033] FIG7 is a schematic diagram of the end face structure of Example 5.

[0034] In the figure: 1. protective component, 2. loose tube, 3. optical fiber ribbon, 4. central cavity, 5. central reinforcement, 6. electrical unit, 11. first longitudinal protective layer, 12. first transverse protective layer, 13. second longitudinal protective layer, 14. embedded groove, 15. third longitudinal protective layer, 16. second transverse protective layer, 17. third transverse protective layer, 18. fourth longitudinal protective layer, 19. fourth transverse protective layer, 110. first cavity, 111. second cavity, 112. butterfly unit protective layer, 113. butterfly unit reinforcement, 114. optical fiber, 115. first tear, 116. second tear. Best Mode for Carrying Out the Invention

[0035] Embodiment 1: As shown in Figures 1 and 2, an optical fiber ribbon cable has four loose tubes 2, each loose tube 2 is provided with at least one optical fiber ribbon 3, characterized in that: it also has four protective components 1, the protective component 1, by a first longitudinal protective layer 11, a first transverse protective layer 12, a second longitudinal protective layer 13, a third longitudinal protective layer 15, a second transverse protective layer 16, a third transverse protective layer 17, a fourth longitudinal protective layer 18 and a fourth transverse protective layer 19. The first longitudinal protective layer 11, the second longitudinal protective layer 13, the third longitudinal protective layer 15 and the fourth longitudinal protective layer 18 are parallel, the first transverse protective layer 12, the second transverse protective layer 16, the third transverse protective layer 17 and the fourth transverse protective layer 19 are parallel, the first longitudinal protective layer 11 is perpendicular to the first transverse protective layer 12, and the first longitudinal protective layer 11 is perpendicular to the first transverse protective layer 12. The lower end of the first layer 11 is connected to the left end of the fourth transverse protective layer 19, the upper end of the first longitudinal protective layer 11 is connected to the left end of the first transverse protective layer 12, the right end of the first transverse protective layer 12 is connected to the upper end of the second longitudinal protective layer 13, the lower end of the second longitudinal protective layer 13 is connected to the left end of the second transverse protective layer 16, the right end of the second transverse protective layer 16 is connected to the lower end of the third longitudinal protective layer 15, the lower end of the third longitudinal protective layer 15 is connected to the left end of the third transverse protective layer 17, the right end of the third transverse protective layer 17 is connected to the upper end of the fourth longitudinal protective layer 18, an embedded groove 14 is formed between the second longitudinal protective layer 13 and the third longitudinal protective layer 15, a second cavity 111 is formed between the third longitudinal protective layer 15, the third transverse protective layer 17 and the fourth longitudinal protective layer 18, A first cavity 110 is formed between the first longitudinal protective layer 11, the first transverse protective layer 12, the second longitudinal protective layer 13 and the fourth transverse protective layer 19; as shown in Figure 1, the length of the third longitudinal protective layer 15 plus the thickness of the second transverse protective layer 16 plus the thickness of the third transverse protective layer 17 is less than the length of the fourth longitudinal protective layer 18 plus the thickness of the third transverse protective layer 17, the length of the fourth longitudinal protective layer 18 plus the thickness of the third transverse protective layer 17 is less than the length of the first transverse protective layer 12 minus the thickness of the first longitudinal protective layer 11 minus the thickness of the second longitudinal protective layer 13, the length of the third transverse protective layer 17 is less than the length of the first longitudinal protective layer 11, the length of the fourth transverse protective layer 19 is less than the length of the third longitudinal protective layer 15 plus the thickness of the third transverse protective layer 17, the first The length of the longitudinal protective layer 11 plus the thickness of the first transverse protective layer 12 is the same as the length of the first transverse protective layer 12; as shown in Figure 2, the thickness of the first longitudinal protective layer 11 and the first transverse protective layer 12 are the same; as shown in Figures 1 and 2, in a clockwise direction, the fourth transverse protective layer 19 of the previous protective component 1 is embedded in the embedding groove 14 of the next protective component 1, the first longitudinal protective layer 11 of the previous protective component 1 and the third transverse protective layer 17 of the next protective component 1 are fitted together, the third longitudinal protective layer 15, the third transverse protective layer 17 and the fourth longitudinal protective layer 18 of the next protective component 1 are located in the first cavity 110 of the previous protective component 1, a central cavity 4 is formed in the middle of the four protective components 1, and the loose sleeve 2 is located in the second cavity 111.

[0036] Embodiment 2: As shown in Figures 2 and 3, an optical fiber ribbon cable has four loose tubes 2, each loose tube 2 is provided with at least one optical fiber ribbon 3, characterized in that: it also has four protective components 1, the protective component 1, by a first longitudinal protective layer 11, a first transverse protective layer 12, a second longitudinal protective layer 13, a third longitudinal protective layer 15, a second transverse protective layer 16, a third transverse protective layer 17, a fourth longitudinal protective layer 18 and a fourth transverse protective layer 19, the first longitudinal protective layer 11, the second longitudinal protective layer 13, the third longitudinal protective layer 15 and the fourth longitudinal protective layer 18 are parallel, the first transverse protective layer 12, the second transverse protective layer 16, the third transverse protective layer 17 and the fourth transverse protective layer 19 are parallel, the first longitudinal protective layer 11 is perpendicular to the first transverse protective layer 12, and the lower end of the first longitudinal protective layer 11 is perpendicular to the fourth transverse protective layer 19. 9 is connected to the left end of the first longitudinal protective layer 11, the upper end of the first transverse protective layer 12 is connected to the left end of the first transverse protective layer 12, the right end of the first transverse protective layer 12 is connected to the upper end of the second longitudinal protective layer 13, the lower end of the second longitudinal protective layer 13 is connected to the left end of the second transverse protective layer 16, the right end of the second transverse protective layer 16 is connected to the lower end of the third longitudinal protective layer 15, the lower end of the third longitudinal protective layer 15 is connected to the left end of the third transverse protective layer 17, the right end of the third transverse protective layer 17 is connected to the upper end of the fourth longitudinal protective layer 18, an embedded groove 14 is formed between the second longitudinal protective layer 13 and the third longitudinal protective layer 15, a second cavity 111 is formed between the third longitudinal protective layer 15, the third transverse protective layer 17 and the fourth longitudinal protective layer 18, the first longitudinal protective layer 11, the first transverse protective layer 12, the second longitudinal protective layer 13 and the fourth transverse protective layer A first cavity 110 is formed between the protective layers 19; as shown in FIG2 , the length of the third longitudinal protective layer 15 plus the thickness of the second transverse protective layer 16 plus the thickness of the third transverse protective layer 17 is less than the length of the fourth longitudinal protective layer 18 plus the thickness of the third transverse protective layer 17; the length of the fourth longitudinal protective layer 18 plus the thickness of the third transverse protective layer 17 is less than the length of the first transverse protective layer 12 minus the thickness of the first longitudinal protective layer 11 minus the thickness of the second longitudinal protective layer 13; the length of the third transverse protective layer 17 is less than the length of the first longitudinal protective layer 11; the length of the fourth transverse protective layer 19 is less than the length of the third longitudinal protective layer 15 plus the thickness of the third transverse protective layer 17; the length of the first longitudinal protective layer 11 plus the thickness of the first transverse protective layer 12 is the same as the length of the first transverse protective layer 12; as shown in FIG3 , The first longitudinal protective layer 11 and the first transverse protective layer 12 have the same thickness; as shown in Figures 2 and 3, and with reference to Figure 1, in a clockwise direction, the fourth transverse protective layer 19 of the previous protective component 1 is embedded in the embedding groove 14 of the next protective component 1, and the first longitudinal protective layer 11 of the previous protective component 1 and the third transverse protective layer 17 of the next protective component 1 are fitted together, and the third longitudinal protective layer 15, the third transverse protective layer 17 and the fourth longitudinal protective layer 18 of the next protective component 1 are located in the first cavity 110 of the previous protective component 1, and a central cavity 4 is formed in the middle of the four protective components 1, and a rectangular central reinforcement 5 is provided in the central cavity 4, and the four side surfaces of the central reinforcement 5 are respectively fitted with the corresponding second transverse protective layers 16, and the loose sleeve 2 is located in the second cavity 111.

[0037] The material of the loose tube 2 described in Example 1 and Example 2 is polybutylene terephthalate.

[0038] The optical fiber ribbon 3 described in Example 1 and Example 2 is formed by at least two optical fibers 114 being ribboned together.

[0039] Example 3: As shown in Figures 4 and 5, a butterfly-shaped optical fiber cable is provided with a butterfly-shaped introduction unit, wherein the butterfly-shaped introduction unit is composed of a butterfly-shaped unit sheath 112, two parallel butterfly-shaped unit reinforcements 113 and an optical fiber 114. The two butterfly-shaped unit reinforcements 113 and the optical fiber 114 are located in the butterfly-shaped unit sheath 112, and the optical fiber 114 is located between the two butterfly-shaped unit reinforcements 113. A first tear 115 is formed on the outer wall of the butterfly-shaped unit sheath 112 on both sides of the optical fiber 114. In the same cross-section, the line connecting the two first tear slits 115 is perpendicular to the line connecting the axes of the two butterfly-shaped unit reinforcements 113. The invention is characterized in that: it also has four A protective component 1, the protective component 1, consists of a first longitudinal protective layer 11, a first transverse protective layer 12, a second longitudinal protective layer 13, a second transverse protective layer 16 and a fourth transverse protective layer 19, the first longitudinal protective layer 11, the second longitudinal protective layer 13 and the left side of the butterfly introduction unit are parallel, the first transverse protective layer 12, the second transverse protective layer 16 and the fourth transverse protective layer 19 are parallel, the first longitudinal protective layer 11 and the first transverse protective layer 12 are perpendicular, the lower end of the first longitudinal protective layer 11 is connected to the left end of the fourth transverse protective layer 19, the upper end of the first longitudinal protective layer 11 is connected to the left end of the first transverse protective layer 12, the right end of the first transverse protective layer 12 is connected to the upper end of the second longitudinal protective layer 13, the lower end of the second longitudinal protective layer 13 is connected to the first transverse protective layer 19. The left ends of the second transverse protective layer 16 are connected, the right end of the second transverse protective layer 16 is connected to the lower left end of the butterfly introduction unit, an embedding groove 14 is formed between the second longitudinal protective layer 13 and the butterfly introduction unit, and a first cavity 110 is formed between the first longitudinal protective layer 11, the first transverse protective layer 12, the second longitudinal protective layer 13 and the fourth transverse protective layer 19; as shown in Figure 4, the height of the butterfly introduction unit is less than the length of the first transverse protective layer 12 minus the thickness of the first longitudinal protective layer 11 minus the thickness of the second longitudinal protective layer 13, the length of the butterfly introduction unit is less than the length of the first longitudinal protective layer 11, the length of the fourth transverse protective layer 19 is less than the height of the butterfly introduction unit minus the thickness of the second transverse protective layer 16, and the first transverse protective layer 19 is less than the height of the butterfly introduction unit minus the thickness of the second transverse protective layer 16. The length of a longitudinal protective layer 11 plus the thickness of the first transverse protective layer 12 is the same as the length of the first transverse protective layer 12; as shown in Figure 5, the thickness of the first longitudinal protective layer 11 and the first transverse protective layer 12 are the same; as shown in Figures 4 and 5, and with reference to Figure 1, in a clockwise direction, the fourth transverse protective layer 19 of the previous protective component 1 is embedded in the embedding groove 14 of the next protective component 1, and the butterfly-shaped introduction unit of the next protective component 1 is located in the first cavity 110 of the previous protective component 1. A central cavity 4 is formed in the middle of the four protective components 1, and a rectangular central reinforcement 5 is provided in the central cavity 4. The four side surfaces of the central reinforcement 5 are respectively fitted with the corresponding second transverse protective layer 16.

[0040] Example 4: As shown in Figure 6 and with reference to Figure 4, a butterfly-shaped optical cable is introduced, having a butterfly-shaped introduction unit, wherein the butterfly-shaped introduction unit is composed of a butterfly-shaped unit sheath 112, two parallel butterfly-shaped unit reinforcements 113 and an optical fiber 114, the two butterfly-shaped unit reinforcements 113 and the optical fiber 114 are located in the butterfly-shaped unit sheath 112, the optical fiber 114 is located between the two butterfly-shaped unit reinforcements 113, and a first tear 115 is formed on the outer wall of the butterfly-shaped unit sheath 112 on both sides of the optical fiber 114. In the same cross-section, the line connecting the two first tearings 115 is perpendicular to the line connecting the axes of the two butterfly-shaped unit reinforcements 113. It is characterized in that: it also has four protective components 1, the protective part Component 1, consisting of a first longitudinal protective layer 11, a first transverse protective layer 12, a second longitudinal protective layer 13, a second transverse protective layer 16 and a fourth transverse protective layer 19, the first longitudinal protective layer 11, the second longitudinal protective layer 13 and the left side of the butterfly introduction unit are parallel, the first transverse protective layer 12, the second transverse protective layer 16 and the fourth transverse protective layer 19 are parallel, the first longitudinal protective layer 11 and the first transverse protective layer 12 are perpendicular, the lower end of the first longitudinal protective layer 11 is connected to the left end of the fourth transverse protective layer 19, the upper end of the first longitudinal protective layer 11 is connected to the left end of the first transverse protective layer 12, the right end of the first transverse protective layer 12 is connected to the upper end of the second longitudinal protective layer 13, the lower end of the second longitudinal protective layer 13 is connected to the left end of the second transverse protective layer 16, and the right end of the second transverse protective layer 16 is connected to the butterfly introduction The left lower end of the unit is connected, and a second tearing opening 116 is provided on both sides of the connection between the second transverse protective layer 16 and the butterfly introduction unit for quickly separating the second transverse protective layer 16 and the butterfly introduction unit. An embedding groove 14 is formed between the second longitudinal protective layer 13 and the butterfly introduction unit, and a first cavity 110 is formed between the first longitudinal protective layer 11, the first transverse protective layer 12, the second longitudinal protective layer 13 and the fourth transverse protective layer 19; as shown in Figure 4, the height of the butterfly introduction unit is less than the length of the first transverse protective layer 12 minus the thickness of the first longitudinal protective layer 11 minus the thickness of the second longitudinal protective layer 13, the length of the butterfly introduction unit is less than the length of the first longitudinal protective layer 11, and the length of the fourth transverse protective layer 19 is less than the height of the butterfly introduction unit. The length of the first longitudinal protective layer 11 minus the thickness of the second transverse protective layer 16, the length of the first longitudinal protective layer 11 plus the thickness of the first transverse protective layer 12 is the same as the length of the first transverse protective layer 12; as shown in Figure 6, the thickness of the first longitudinal protective layer 11 and the first transverse protective layer 12 are the same; as shown in Figures 4 and 6, and with reference to Figure 1, in a clockwise direction, the fourth transverse protective layer 19 of the previous protective component 1 is embedded in the embedding groove 14 of the subsequent protective component 1, and the butterfly-shaped introduction unit of the subsequent protective component 1 is located in the first cavity 110 of the previous protective component 1. A central cavity 4 is formed in the middle of the four protective components 1, and a rectangular central reinforcement 5 is provided in the central cavity 4. The four side surfaces of the central reinforcement 5 are respectively fitted with the corresponding second transverse protective layer 16.

[0041] Example 5: As shown in Figures 4 and 7, a butterfly-shaped optical fiber cable has a butterfly-shaped introduction unit, which is composed of a butterfly-shaped unit sheath 112, two parallel butterfly-shaped unit reinforcements 113 and an optical fiber 114. The two butterfly-shaped unit reinforcements 113 and the optical fiber 114 are located in the butterfly-shaped unit sheath 112, and the optical fiber 114 is located between the two butterfly-shaped unit reinforcements 113. A first tear 115 is formed on the outer wall of the butterfly-shaped unit sheath 112 on both sides of the optical fiber 114. In the same cross-section, the line connecting the two first tear slits 115 is perpendicular to the line connecting the axes of the two butterfly-shaped unit reinforcements 113. It is characterized in that it also has four protective components 1, the protective component 1, consists of a first longitudinal protective layer 11, a first transverse protective layer 12, a second longitudinal protective layer 13, a second transverse protective layer 16 and a fourth transverse protective layer 19, the first longitudinal protective layer 11, the second longitudinal protective layer 13 and the left side of the butterfly introduction unit are parallel, the first transverse protective layer 12, the second transverse protective layer 16 and the fourth transverse protective layer 19 are parallel, the first longitudinal protective layer 11 and the first transverse protective layer 12 are perpendicular, the lower end of the first longitudinal protective layer 11 is connected to the left end of the fourth transverse protective layer 19, the upper end of the first longitudinal protective layer 11 is connected to the left end of the first transverse protective layer 12, the right end of the first transverse protective layer 12 is connected to the upper end of the second longitudinal protective layer 13, and the lower end of the second longitudinal protective layer 13 is connected to the left end of the second transverse protective layer 16 The right end of the second transverse protective layer 16 is connected to the lower left end of the butterfly introduction unit, an embedded groove 14 is formed between the second longitudinal protective layer 13 and the butterfly introduction unit, and a first cavity 110 is formed between the first longitudinal protective layer 11, the first transverse protective layer 12, the second longitudinal protective layer 13 and the fourth transverse protective layer 19; as shown in Figure 4, the height of the butterfly introduction unit is less than the length of the first transverse protective layer 12 minus the thickness of the first longitudinal protective layer 11 minus the thickness of the second longitudinal protective layer 13, the length of the butterfly introduction unit is less than the length of the first longitudinal protective layer 11, the length of the fourth transverse protective layer 19 is less than the height of the butterfly introduction unit minus the thickness of the second transverse protective layer 16, the length of the first longitudinal protective layer 11 plus the first The thickness of the transverse protective layer 12 is the same as the length of the first transverse protective layer 12; as shown in Figure 7, the thickness of the first longitudinal protective layer 11 and the first transverse protective layer 12 are the same; as shown in Figures 4 and 7, and with reference to Figure 1, in a clockwise direction, the fourth transverse protective layer 19 of the previous protective component 1 is embedded in the embedding groove 14 of the next protective component 1, and each embedding groove 14 is also provided with an electrical unit 6, and the butterfly-shaped introduction unit of the next protective component 1 is located in the first cavity 110 of the previous protective component 1. A central cavity 4 is formed in the middle of the four protective components 1, and a rectangular central reinforcement 5 is provided in the central cavity 4. The four sides of the central reinforcement 5 are respectively fitted with the corresponding second transverse protective layer 16.

[0042] In Examples 3 to 5, the optical fiber 114 is a multimode optical fiber or a single-mode optical fiber.

[0043] The type of the optical fiber 114 is G.652, G.654, G.655, G.657, A1a, or A1b.

[0044] The optical fiber ribbon cable in this application is also called a rectangular optical fiber ribbon cable, and the butterfly-shaped drop cable is also called a rectangular butterfly-shaped drop cable.

[0045] The material of the protection component in the present application is plastic, preferably polyethylene or polypropylene. Industrial Applicability

[0046] This application has been implemented and its beneficial effects have been verified through use.

Claims

1. An optical fiber ribbon cable having four loose tubes (2), each of which has at least one optical fiber ribbon (3) disposed therein, characterized in that: The invention also comprises four protective components (1), wherein the protective components (1) are composed of a first longitudinal protective layer (11), a first transverse protective layer (12), a second longitudinal protective layer (13), a third longitudinal protective layer (15), a second transverse protective layer (16), a third transverse protective layer (17), a fourth longitudinal protective layer (18) and a fourth transverse protective layer (19); the first longitudinal protective layer (11), the second longitudinal protective layer (13), the third longitudinal protective layer (15) and the fourth longitudinal protective layer (18) are parallel; the first transverse protective layer (12), the second transverse protective layer (16), the third transverse protective layer (17) and the fourth transverse protective layer (19) are parallel; the first longitudinal protective layer (11) The first longitudinal protective layer (11) is perpendicular to the first transverse protective layer (12), the lower end of the first longitudinal protective layer (11) is connected to the left end of the fourth transverse protective layer (19), the upper end of the first longitudinal protective layer (11) is connected to the left end of the first transverse protective layer (12), the right end of the first transverse protective layer (12) is connected to the upper end of the second longitudinal protective layer (13), the lower end of the second longitudinal protective layer (13) is connected to the left end of the second transverse protective layer (16), the right end of the second transverse protective layer (16) is connected to the lower end of the third longitudinal protective layer (15), the lower end of the third longitudinal protective layer (15) is connected to the left end of the third transverse protective layer (17), the right end of the third transverse protective layer (17) is connected to the fourth longitudinal protective layer ( The upper end of the second longitudinal protective layer (13) and the third longitudinal protective layer (15) are connected, an embedding groove (14) is formed between the second longitudinal protective layer (13) and the third longitudinal protective layer (15), a second cavity (111) is formed between the third longitudinal protective layer (15), the third transverse protective layer (17) and the fourth longitudinal protective layer (18), and a first cavity (110) is formed between the first longitudinal protective layer (11), the first transverse protective layer (12), the second longitudinal protective layer (13) and the fourth transverse protective layer (19); the length of the third longitudinal protective layer (15) plus the thickness of the second transverse protective layer (16) plus the thickness of the third transverse protective layer (17) is less than the length of the fourth longitudinal protective layer (18) plus the length of the third transverse protective layer (19). The thickness of the transverse protective layer (17), the length of the fourth longitudinal protective layer (18) plus the thickness of the third transverse protective layer (17), is less than the length of the first transverse protective layer (12) minus the thickness of the first longitudinal protective layer (11) minus the thickness of the second longitudinal protective layer (13), the length of the third transverse protective layer (17) is less than the length of the first longitudinal protective layer (11), the length of the fourth transverse protective layer (19) is less than the length of the third longitudinal protective layer (15) plus the thickness of the third transverse protective layer (17), the length of the first longitudinal protective layer (11) plus the thickness of the first transverse protective layer (12) is the same as the length of the first transverse protective layer (12); in a clockwise direction, The fourth transverse protective layer (19) of the preceding protective component (1) is embedded in the embedding groove (14) of the following protective component (1); the third longitudinal protective layer (15), the third transverse protective layer (17) and the fourth longitudinal protective layer (18) of the following protective component (1) are located in the first cavity (110) of the preceding protective component (1); and the loose tube (2) is located in the second cavity (111); a central cavity (4) is formed in the middle of the four protective components (1); a rectangular central reinforcement member (5) is provided in the central cavity (4); and four side surfaces of the central reinforcement member (5) are respectively fitted with the corresponding second transverse protective layers (16);The material of the loose tube (2) is polybutylene terephthalate.

2. The optical fiber ribbon cable according to claim 1, characterized in that: The optical fiber ribbon (3) is formed by combining at least two optical fibers (114).

3. The optical fiber ribbon cable according to claim 2, characterized in that: The model of the optical fiber (114) is G.652, G.654, G.655, G.657, A1a, or A1b.

4. The optical fiber ribbon cable according to claim 1, 2 or 3, characterized in that: The material of the protection component (1) is plastic.

5. The optical fiber ribbon cable according to claim 1, 2 or 3, characterized in that: The material of the protection member (1) is polyethylene or polypropylene.

6. A butterfly-shaped optical fiber cable, comprising a butterfly-shaped introduction unit, wherein the butterfly-shaped introduction unit is composed of a butterfly-shaped unit sheath (112), two parallel butterfly-shaped unit reinforcement members (113) and an optical fiber (114), wherein the two butterfly-shaped unit reinforcement members (113) and the optical fiber (114) are located within the butterfly-shaped unit sheath (112), and the optical fiber (114) is located between the two butterfly-shaped unit reinforcement members (113). A first tearing opening (115) is formed on the outer wall of the butterfly-shaped unit sheath (112) on both sides of the optical fiber (114), and within the same cross-section, a line connecting the two first tearing openings (115) is perpendicular to a line connecting the axes of the two butterfly-shaped unit reinforcement members (113). The invention is characterized in that: The invention also comprises four protective components (1), wherein the protective components (1) are composed of a first longitudinal protective layer (11), a first transverse protective layer (12), a second longitudinal protective layer (13), a second transverse protective layer (16) and a fourth transverse protective layer (19). The first longitudinal protective layer (11), the second longitudinal protective layer (13) and the left side of the butterfly-shaped introduction unit are parallel. The first transverse protective layer (12), the second transverse protective layer (16) and the fourth transverse protective layer (19) are parallel. The first longitudinal protective layer (11) The butterfly-shaped introduction unit is perpendicular to the first transverse protective layer (12), the lower end of the first longitudinal protective layer (11) is connected to the left end of the fourth transverse protective layer (19), the upper end of the first longitudinal protective layer (11) is connected to the left end of the first transverse protective layer (12), the right end of the first transverse protective layer (12) is connected to the upper end of the second longitudinal protective layer (13), the lower end of the second longitudinal protective layer (13) is connected to the left end of the second transverse protective layer (16), the right end of the second transverse protective layer (16) is connected to the lower left end of the butterfly-shaped introduction unit, an embedding groove (14) is formed between the second longitudinal protective layer (13) and the butterfly-shaped introduction unit, and a first cavity (110) is formed between the first longitudinal protective layer (11), the first transverse protective layer (12), the second longitudinal protective layer (13) and the fourth transverse protective layer (19); the height of the butterfly-shaped introduction unit is less than the length of the first transverse protective layer (12) minus the thickness of the first longitudinal protective layer (11) minus the thickness of the second longitudinal protective layer (13), and the butterfly-shaped introduction unit is less than the length of the first transverse protective layer (12) minus the thickness of the first longitudinal protective layer (11) minus the thickness of the second longitudinal protective layer (13). The length of the butterfly-shaped introduction unit is less than the length of the first longitudinal protective layer (11), the length of the fourth transverse protective layer (19) is less than the height of the butterfly-shaped introduction unit minus the thickness of the second transverse protective layer (16), and the length of the first longitudinal protective layer (11) plus the thickness of the first transverse protective layer (12) is the same as the length of the first transverse protective layer (12); in a clockwise direction, the fourth transverse protective layer (19) of the preceding protective component (1) is embedded in the embedding groove (14) of the following protective component (1), and the butterfly-shaped introduction unit of the following protective component (1) is located in the first cavity (110) of the preceding protective component (1); a central cavity (4) is formed in the middle of the four protective components (1), and a rectangular central reinforcement member (5) is provided in the central cavity (4), and the four side surfaces of the central reinforcement member (5) are respectively in contact with the corresponding second transverse protective layer (16); and an electrical unit (6) is also provided in each embedding groove (14).

7. The butterfly-shaped drop optical cable according to claim 6, characterized in that: The first longitudinal protective layer (11) and the first transverse protective layer (12) have the same thickness.

8. The butterfly-shaped drop optical cable according to claim 6 or claim 7, characterized in that: The model of the optical fiber (114) is G.652, G.654, G.655, G.657, A1a, or A1b.

9. The butterfly-shaped drop optical cable according to claim 6 or claim 7, characterized in that: The material of the protection component (1) is plastic.

10. The butterfly-shaped drop optical cable according to claim 6 or claim 7, characterized in that: The material of the protection member (1) is polyethylene or polypropylene.

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