Optical fiber ribbon optical cable and butterfly-shaped leading-in optical cable

Abstract

The invention belongs to the field of cables, and discloses an optical fiber ribbon optical cable which is provided with four loose tubes (2), at least one optical fiber ribbon (3) is arranged in each loose tube (2), the optical fiber ribbon optical cable is further provided with four protection components (1), the four protection components (1) are connected in a pairwise embedded mode to form a closed protection layer, the protection layer forms four containing cavities, the loose tubes are arranged in the four containing cavities, and the loose tubes are arranged in the loose tubes. At least one optical fiber ribbon is arranged in the loose tube; the device has the beneficial effects of simple structure, convenience in construction, good protection effect, low production cost, high mechanical property and the like; the invention further discloses the butterfly-shaped leading-in optical cable.

Description

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 optical cable is used for the last mile of fiber-optic access to the home. Due to its small outer diameter, light weight, low cost, good flexibility and bending performance, and easy laying, it is 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, which has 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 is extended from the middle of the outer sheath body to the inside of the first cavity and the second cavity respectively, a first clamping component is respectively arranged at the end of the outer sheath body corresponding to the first cavity and the second cavity, two first clamping grooves corresponding to the first clamping component are arranged 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. SUMMARY OF THE INVENTION 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 implemented by adopting the following technical solutions.

[0006] An optical fiber ribbon cable, having four loose tubes, each of which has at least one optical fiber ribbon, 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 ... The first transverse protective layer is vertical, the lower end of the first longitudinal protective layer is connected to the left end of the fourth transverse protective layer, the upper end of the first longitudinal protective layer is connected 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, the right end of the second transverse protective layer is connected to the lower end of the third longitudinal protective layer, the lower end of the third longitudinal protective layer is connected to the left end of the third transverse protective layer, the right end of the third transverse protective layer is connected to the upper end of the fourth longitudinal protective layer, and an embedded layer is formed between the second longitudinal protective layer and the third longitudinal protective layer. A second cavity 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 next protective component, the third longitudinal protective layer, the third transverse protective layer and the fourth longitudinal protective layer of the next 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 succeeding 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 at least two optical fibers being connected together.

[0012] A butterfly-shaped optical cable 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, a first tear is formed on the outer wall of the butterfly-shaped unit sheath on both sides of the optical fiber, and in the same cross-section, the line connecting the two first tear is perpendicular to the line connecting the axes of the two butterfly-shaped unit reinforcements. It 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 second transverse protective layer and a fourth transverse protective layer, the first longitudinal protective layer, the second longitudinal protective layer and the left side surface 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 connected 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, 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, 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 the 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 introduction 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.

[0014] The butterfly-shaped optical cable introduction cable 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 lead-in optical cable described above is characterized in that a second tearing opening is respectively provided on both sides of the connection between the second transverse protective layer and the butterfly-shaped lead-in unit for quickly separating the second transverse protective layer from the butterfly-shaped lead-in unit.

[0016] The butterfly-shaped optical cable introduction described above is characterized in that an electrical unit is also 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 is convenient for replacing the protective component when it is damaged. There is no need to peel and re-extrude the outer sheath of an ordinary optical cable when the outer sheath is damaged, thus saving materials and reducing costs.

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

[0019] 3. The central reinforcement member with a shape of a circle is provided to provide the optical cable with stronger tensile performance, and also to provide the optical cable with stronger resistance to lateral pressure, and to 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, so that the optical cable can 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 contact each other, thereby avoiding mutual squeezing effects between the loose tubes.

[0022] 6. In the optical fiber ribbon cable, each loose tube is protected by a protective component 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 protection component and the butterfly-shaped introduction unit are integrally formed, and the cross-sections of the first longitudinal protective layer, the first transverse protective layer, the second longitudinal protective layer and the fourth transverse protective layer form a hook shape, which can be used to hang the rope during construction, and no other tools are required, so 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 type butterfly cable of ordinary structure can be obtained, which is suitable for all laying methods of GJXH type butterfly cables of ordinary structure and has strong applicability.

[0025] 9. In the rectangular ribbon butterfly-shaped lead-in optical cable, the protective components are mutually embedded to form four first cavities, the butterfly-shaped lead-in units are located in the first cavities, and the butterfly-shaped lead-in units are mutually separated and non-contacting, thereby avoiding mutual squeezing influence between the butterfly-shaped lead-in units.

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

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

[0028] Figure 2 This is a schematic diagram of the protective component structure of Example 1.

[0029] Figure 3 This is a schematic diagram of the end face structure of Example 2.

[0030] Figure 4 This is a schematic diagram of the end face structure of Example 3.

[0031] Figure 5 This is a schematic diagram of the protective component structure of Example 3.

[0032] Figure 6 This is a schematic diagram of the protective component structure of Example 4.

[0033] Figure 7 This is a schematic diagram of the end face structure of Example 5.

[0034] In the figure: 1. protective component, 2. loose sleeve, 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] Example 1: Figure 1 and Figure 2, an optical fiber ribbon cable, comprising four loose tubes 2, each of which is provided with at least one optical fiber ribbon 3, characterized in that: it also comprises four protective components 1, wherein the protective component 1 is 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 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 first longitudinal protective layer 11 The upper end 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 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; 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 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; Figure 2 , the thickness of the first longitudinal protective layer 11 and the first transverse protective layer 12 are the same; Figure 1 and Figure 2 , along the 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] Example 2: Figure 2 and Figure 3 , an optical fiber ribbon cable, comprising four loose tubes 2, each of which is provided with at least one optical fiber ribbon 3, characterized in that: it also comprises four protective components 1, wherein the protective component 1 is 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 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 first longitudinal protective layer 11 The upper end 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 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; Figure 2 , 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; if Figure 3 , the thickness of the first longitudinal protective layer 11 and the first transverse protective layer 12 are the same; Figure 2 and Figure 3 , and refer to Figure 1, along the 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, and a central cavity 4 is formed in the middle of the four protective components 1. A rectangular central reinforcement 5 is provided in the central cavity 4, and the four sides of the central reinforcement 5 are respectively fitted with the corresponding second transverse protective layer 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 Embodiment 1 and Embodiment 2 is formed by at least two optical fibers 114 being connected in a ribbon.

[0039] Example 3: Figure 4 and Figure 5 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 112, two parallel butterfly-shaped unit reinforcements 113 and an optical fiber 114, wherein 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, and within the same cross section, the connection line of the two first tear 115 is perpendicular to the connection line of the axes of the two butterfly-shaped unit reinforcements 113. The invention is characterized in that: the butterfly-shaped optical cable introduction has four protective components 1, wherein the protective component 1 is 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, wherein the first The 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, 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; 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 thickness of the first transverse protective layer 12 is the same as the length of the first transverse protective layer 12; Figure 5 , the thickness of the first longitudinal protective layer 11 and the first transverse protective layer 12 are the same; Figure 4 and Figure 5 , and refer to Figure 1 , along the 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. A rectangular central reinforcement member 5 is provided in the central cavity 4. The four sides of the central reinforcement member 5 are respectively fitted with the corresponding second transverse protective layer 16.

[0040] Example 4: Figure 6 , and refer to Figure 4A butterfly-shaped optical cable introduction cable has 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, the two butterfly-shaped unit reinforcement members 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 reinforcement members 113, and the outer walls of the butterfly-shaped unit sheath 112 on both sides of the optical fiber 114 each form a first tear 115, and in the same cross section, the connection line of the two first tear 115 is perpendicular to the connection line of the axes of the two butterfly-shaped unit reinforcement members 113, and is characterized in that: it also has four protective components 1, and the protective component 1 is 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, and the first longitudinal protective layer 11 and the second longitudinal protective layer 13 are parallel to the left side of the butterfly-shaped introduction unit, and the fourth transverse protective layer 19 is provided. 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, the right end of the second transverse protective layer 16 is connected to the lower left end of the butterfly-shaped introduction unit, and a second tearing opening 116 is provided on both sides of the connection between the second transverse protective layer 16 and the butterfly-shaped introduction unit for quickly separating the second transverse protective layer 16 from 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; 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 thickness of the first transverse protective layer 12 is the same as the length of the first transverse protective layer 12; Figure 6 , the thickness of the first longitudinal protective layer 11 and the first transverse protective layer 12 are the same; Figure 4 and Figure 6 , and refer to Figure 1 , along the 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. A rectangular central reinforcement member 5 is provided in the central cavity 4. The four sides of the central reinforcement member 5 are respectively fitted with the corresponding second transverse protective layer 16.

[0041] Example 5: Figure 4 and Figure 7 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 112, two parallel butterfly-shaped unit reinforcements 113 and an optical fiber 114, wherein 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, and within the same cross section, the connection line of the two first tear 115 is perpendicular to the connection line of the axes of the two butterfly-shaped unit reinforcements 113. The invention is characterized in that: the butterfly-shaped optical cable introduction has four protective components 1, wherein the protective component 1 is 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, wherein the first The 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, 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; 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 thickness of the first transverse protective layer 12 is the same as the length of the first transverse protective layer 12; Figure 7 , the thickness of the first longitudinal protective layer 11 and the first transverse protective layer 12 are the same; Figure 4 and Figure 7 , and refer to Figure 1 , along the 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 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 member 5 is provided in the central cavity 4. The four sides of the central reinforcement member 5 are respectively fitted with the corresponding second transverse protective layer 16.

[0042] In Embodiments 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 lead-in cable is also called a rectangular butterfly-shaped lead-in 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 An optical fiber ribbon (3), characterized in that: It also has four protection components (1), the protection 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), 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 to each other, and the first transverse protective layer (12), the second transverse protective layer (16), the third transverse protective layer (17) and the fourth longitudinal protective layer (19) are parallel to each other. The four transverse protective layers (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), and the upper end of the first longitudinal protective layer (11) is connected to the left end of the fourth transverse protective layer (19). The left end of the first transverse protective layer (12) is connected, 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 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), and the right end of the third transverse protective layer (17) is connected to the fourth longitudinal protective layer (15). The upper ends of the longitudinal protective layers (18) are connected, an embedding groove (14) is formed between the second longitudinal protective layer (13) and the third longitudinal protective layer (15), and the third longitudinal protective layer (15), the third transverse protective layer (17) and the fourth longitudinal protective layer (18) are connected. A second cavity (111) is formed between the first longitudinal protective layer (11), the first transverse protective layer (12), and the second A first cavity (110) is formed between the longitudinal protective layer (13) and the fourth transverse protective layer (19); The length of the first transverse 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), and the length of the fourth transverse protective layer (19) is less than the length of the third longitudinal protective layer (19). The length of the 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) are the same as the length of the first transverse protective layer (12); In the needle 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). The four The side surfaces 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. An optical fiber ribbon cable according to claim 1, 2 or 3, characterized in that: The material of the protection component (1) is plastic.

5. An 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 introduction optical 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), Two butterfly unit reinforcement members (113) and an optical fiber (114) are located on the butterfly unit sheath (112). The optical fiber (114) is located between two butterfly-shaped unit reinforcement members (113), and the outer walls of the butterfly-shaped unit sheath (112) on both sides of the optical fiber (114) each form a first tearing opening (115). In the same cross section, The connection line of the two first tearing openings (115) and the connection line of the axes of the two butterfly-shaped unit reinforcement members (113) are The line is vertical, characterized by: It also has four protection components (1), wherein the protection components (1) The butterfly-shaped introduction unit is 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) 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 (19). The left 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 second transverse protective layer (16) is connected to the left end of the second transverse protective layer (16). The right end of the layer (16) is connected to the lower left end of the butterfly-shaped introduction unit, and the second longitudinal protective layer (13) and the butterfly An embedding groove (14) is formed between the butterfly-shaped introduction units, 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); 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 longitudinal protective layer (13); The length of the first longitudinal protective layer (11) minus the thickness of the second transverse protective layer (16) plus the thickness of the first transverse protective layer (12) is the same as the length of the first transverse protective layer (12); along the 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 member (5) is provided in the central cavity (4), and the four side surfaces of the central reinforcement member (5) are respectively connected to the corresponding first and second protective components (1). The two transverse protective layers (16) are fitted together; and an electrical unit (6) is also arranged in each embedded groove (14).

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

10. A butterfly-shaped 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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