Butterfly-shaped lead-in optical cable with self-fixed cable core

Abstract

The invention belongs to the technical field of optical cables, and particularly relates to a cable core self-fixing butterfly-shaped leading-in optical cable which is provided with an outer protective layer, a cable core is arranged in the outer protective layer, the cable core is composed of at least one set of sub-cable cores, when multiple sets of sub-cable cores are arranged, the sub-cable cores are stacked up and down, each sub-cable core is composed of n leading-in unit combinations and n-1 first self-fixing units, n is larger than or equal to 2, and n-1 is larger than or equal to 1. Every two adjacent lead-in unit combinations are in bilateral symmetry, every two adjacent lead-in unit combinations are connected in a clamped mode through a first self-fixing unit, and each lead-in unit combination is composed of a plurality of common reinforcing piece protection layers and a lead-in unit protection layer. The invention has the beneficial effects of simple structure, expandability, low cost, good mechanical property, self-fixation of introduced unit combination and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of optical cables, and in particular relates to a butterfly-shaped lead-in optical cable with a self-fixed cable core. Background Art

[0002] With the continuous development of the optical communication industry and the deepening of FTTX, when independent butterfly optical cables of the existing technology are independently wired in high-rise buildings, although the independent butterfly optical cables are small in size, if multiple cables are wired together, they will still occupy too much pipeline space, and the cross-section of the independent butterfly optical cables is larger than the cross-section of the optical fiber, which is not conducive to cost savings.

[0003] In the prior art, CN117826350A discloses a plug-in butterfly optical cable, which has at least two butterfly units and a receiving component, wherein the butterfly unit is composed of a butterfly unit body and a reinforcing member, and the butterfly unit body is composed of a reinforcing member sheath, two first protective walls, two second protective walls and two telescopic gap side walls, and the reinforcing member is located in the reinforcing member sheath; the first protective wall is connected to the reinforcing member sheath, and a cavity is formed between the first protective wall and the corresponding second protective wall, the corresponding telescopic gap side wall and the reinforcing member sheath, and at least one optical transmission unit is arranged in the cavity; the butterfly unit is plugged into the receiving component. The present invention also discloses a plug-in butterfly optical cable.

[0004] The above-mentioned prior art has the following drawbacks: the expansion of the butterfly unit needs to rely on the number of receiving slots of the receiving component, and cannot be expanded arbitrarily.

[0005] For another example, CN117631185A discloses an easy-to-install butterfly optical cable and an installation conduit thereof, wherein the easy-to-install butterfly optical cable comprises a sheath and an optical unit, wherein the sheath comprises a first installation portion and a second installation portion, wherein the first installation portion has a first limiting structure; the installation conduit comprises a plurality of optical cable channels, each optical cable channel comprises a first positioning portion and a second positioning portion, wherein the second positioning portion comprises a movable track; the first limiting structure of the easy-to-install butterfly optical cable is plugged into the first positioning portion of the installation track, and the second installation portion abuts against the movable track on the second positioning portion of the installation track, so that the easy-to-install butterfly optical cable is configured to be transported on the movable track.

[0006] The above-mentioned prior art has the following drawbacks: the sheath is long, each butterfly optical cable has two independent reinforcement members, and the cost is high. Summary of the invention

[0007] In order to solve the above problems, the purpose of the present invention is to disclose a butterfly-shaped optical cable with a self-fixed cable core, which is achieved by adopting the following technical solutions.

[0008] A butterfly-shaped optical cable with a self-fixed cable core, comprising an outer sheath, a cable core arranged inside the outer sheath, the cable core consisting of at least one group of sub-cable cores, when there are multiple groups of sub-cable cores, all sub-cable cores are stacked up and down, the sub-cable cores consisting of n introduction unit combinations and n-1 first self-fixing units, n≥2, and two adjacent introduction unit combinations are bilaterally symmetrical; Two adjacent introduction unit assemblies are attached to each other, and the two adjacent introduction unit assemblies are clamped together by the first self-fixing unit; The introduction unit combination is composed of a first common reinforcement member sheath, a second common reinforcement member sheath, a third common reinforcement member sheath, a fourth common reinforcement member sheath, a fifth common reinforcement member sheath, a sixth common reinforcement member sheath, five introduction unit sheaths and six common reinforcements; In the rightmost introduction unit combination, in the same cross section, the first common reinforcement member sheath, the second common reinforcement member sheath, the third common reinforcement member sheath and the fourth common reinforcement member sheath are located clockwise at the four vertices of the same square; The first common reinforcement member sheath and the second common reinforcement member sheath are connected through an introduction unit sheath, the second common reinforcement member sheath and the third common reinforcement member sheath are connected through an introduction unit sheath, the third common reinforcement member sheath and the fourth common reinforcement member sheath are connected through an introduction unit sheath, and a first clamping cavity with an opening to the left is formed among the first common reinforcement member sheath, the second common reinforcement member sheath, the third common reinforcement member sheath and the fourth common reinforcement member sheath; The third common reinforcement member sheath, the fourth common reinforcement member sheath, the fifth common reinforcement member sheath and the sixth common reinforcement member sheath are located counterclockwise at the four corners of the same square; The third common reinforcement member sheath and the fourth common reinforcement member sheath are connected via an introduction unit sheath, the fourth common reinforcement member sheath and the fifth common reinforcement member sheath are connected via an introduction unit sheath, the fifth common reinforcement member sheath and the sixth common reinforcement member sheath are connected via an introduction unit sheath, and a second clamping cavity opening to the right is formed between the third common reinforcement member sheath, the fourth common reinforcement member sheath, the fifth common reinforcement member sheath and the sixth common reinforcement member sheath; A common strength member is disposed inside the first common strength member sheath, the second common strength member sheath, the third common strength member sheath, the fourth common strength member sheath, the fifth common strength member sheath and the sixth common strength member sheath, and an optical fiber is disposed inside the introduction unit sheath.

[0009] In the above-mentioned butterfly-shaped optical cable with a self-fixed cable core, in the rightmost introduction unit combination, in the same cross section, a first limiting component is further provided below the left side of the sheath of the first common reinforcement member, and a second limiting component is further provided above the right side of the sheath of the sixth common reinforcement member, a first clamping groove is formed between the first limiting component and the sheath of the third common reinforcement member, and a second clamping groove is formed between the second limiting component and the sheath of the fourth common reinforcement member; From right to left, the first clamping groove of the n-1th introduction unit combination is connected to the first clamping groove of the nth introduction unit combination, and the second clamping groove of the nth introduction unit combination is connected to the second clamping groove of the n+1th introduction unit combination; The first self-fixing unit is composed of two first clamping parts and a first connecting part. The two first clamping parts are located at two ends of the first connecting part. A first fiber accommodating cavity is provided in the first clamping part. At least one optical fiber is provided in the first fiber accommodating cavity. The first clamping cavity of the n-1th introduction unit combination and the first clamping cavity of the nth introduction unit combination are respectively clamped with two first clamping components of the first self-fixing unit; The second clamping cavity of the nth introduction unit combination and the second clamping cavity of the (n+1)th introduction unit combination are respectively clamped with two first clamping components of the first self-fixing unit.

[0010] In the above-mentioned butterfly-shaped optical cable with a self-fixing cable core, the first connecting component of the first self-fixing unit is fitted with the corresponding two connected first clamping grooves or the corresponding two connected second clamping grooves.

[0011] In the butterfly-shaped optical cable with a self-fixed cable core, a loose tube is clamped in the first clamping cavity or the second clamping cavity which is not clamped with the first clamping component, and an optical fiber is arranged in the loose tube.

[0012] The above-mentioned butterfly-shaped lead-in optical cable with a self-fixed cable core has at least one tearing opening on the sheath of the lead-in unit for quickly stripping the optical fiber.

[0013] The cable core of the above-mentioned butterfly-shaped lead-in optical cable is self-fixed, and the material of the outer sheath is polyethylene.

[0014] The above-mentioned butterfly-shaped optical cable with a self-fixed cable core, the first common strength member sheath, the second common strength member sheath, the third common strength member sheath, the fourth common strength member sheath, the fifth common strength member sheath, the sixth common strength member sheath, the introduction unit sheath, the first limiting component and the second limiting component are made of flame-retardant polyolefin.

[0015] The above-mentioned butterfly-shaped introduction optical cable with a self-fixed cable core, the first common strength member sheath, the second common strength member sheath, the third common strength member sheath, the fourth common strength member sheath, the fifth common strength member sheath, the sixth common strength member sheath, the introduction unit sheath, the first limiting component and the second limiting component are integrally formed.

[0016] In the above-mentioned butterfly-shaped optical cable with a self-fixing cable core, the material of the first self-fixing unit is polybutylene terephthalate.

[0017] The above-mentioned butterfly-shaped lead-in optical cable with a self-fixed cable core has a multimode optical fiber or a single-mode optical fiber.

[0018] The common reinforcement member of the butterfly-shaped optical cable with a self-fixed cable core described above is a phosphating steel wire.

[0019] The present invention has the following beneficial effects: 1. The combination of two adjacent introduction units can be self-fixed by the first self-fixing unit, so that the cable core can be integrated without using materials such as binding yarn, thereby saving material costs and simplifying the cabling process.

[0020] 2. The introduction unit combination can be extended to both sides and fixed by the first self-fixing unit, so as to facilitate the formation of an optical cable with a larger number of fiber cores.

[0021] 3. The common reinforcement is shared by the introduction unit sheaths on both sides, which saves the common reinforcement and the common reinforcement sheath material, saves the cost and reduces the volume.

[0022] 4. The common reinforcement members are distributed in the cable core, making the stress on the optical cable more uniform and improving the mechanical properties of the optical cable.

[0023] 5. The first clamping component and the loose tube are surrounded by a surrounding common reinforcement member sheath, which improves the protection effect of the first clamping component and the loose tube.

[0024] 6. Loose tube and butterfly introduction optical cable unit mixed wiring, expand the scope of use of optical cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of a section of Example 1 of the present invention.

[0026] Figure 2 It is a front view of embodiment 1 of the present invention.

[0027] Figure 3 It is a front view of the introduction unit combination of Example 1 of the present invention.

[0028] Figure 4 It is a front view of the first self-fixing unit of Example 1 of the present invention.

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of a section of Example 2 of the present invention.

[0030] Figure 6 It is a front view of embodiment 2 of the present invention.

[0031] Figure 7 It is a front view of embodiment 3 of the present invention.

[0032] In the figure, 1. outer sheath, 2. introduction unit combination, 21. first common strength member sheath, 22. second common strength member sheath, 23. third common strength member sheath, 24. fourth common strength member sheath, 25. fifth common strength member sheath, 26. sixth common strength member sheath, 27. introduction unit sheath, 29. tear, 210. first limiting component, 211. first clamping cavity, 212. first clamping groove, 213. second limiting component, 214. second clamping cavity, 215. second clamping groove, 216. common strength member, 3. first self-fixing unit, 31. first clamping component, 32. first fiber accommodating cavity, 33. first connecting component, 4. loose sleeve, 5. optical fiber. DETAILED DESCRIPTION

[0033] Example 1: Figures 1 to 4 A butterfly-shaped optical cable with a self-fixing cable core has an outer sheath 1, a cable core is arranged inside the outer sheath 1, and the cable core is composed of two introduction unit assemblies 2, a first self-fixing unit 3 and two loose tubes 4, and the two introduction unit assemblies 2 are bilaterally symmetrical; The introduction unit assembly 2 is composed of a first common reinforcement member sheath 21, a second common reinforcement member sheath 22, a third common reinforcement member sheath 23, a fourth common reinforcement member sheath 24, a fifth common reinforcement member sheath 25, a sixth common reinforcement member sheath 26, five introduction unit sheaths 27, five optical fibers 5, a first limiting component 210, a second limiting component 213 and six common reinforcement members 216; In the introduction unit assembly 2 on the right, in the same cross section, the first common reinforcement member sheath 21, the second common reinforcement member sheath 22, the third common reinforcement member sheath 23 and the fourth common reinforcement member sheath 24 are located clockwise at the four vertices of the same square; The first common reinforcement member sheath 21 and the second common reinforcement member sheath 22 are connected by an introduction unit sheath 27, the second common reinforcement member sheath 22 and the third common reinforcement member sheath 23 are connected by an introduction unit sheath 27, the third common reinforcement member sheath 23 and the fourth common reinforcement member sheath 24 are connected by an introduction unit sheath 27, the first limiting component 210 is fixed at the lower left side of the first common reinforcement member sheath 21, a first clamping groove 212 is formed between the first limiting component 210 and the third common reinforcement member sheath 23, and a first clamping cavity 211 opening to the left is formed between the first common reinforcement member sheath 21, the second common reinforcement member sheath 22, the third common reinforcement member sheath 23 and the fourth common reinforcement member sheath 24; The third common reinforcement member sheath 23, the fourth common reinforcement member sheath 24, the fifth common reinforcement member sheath 25 and the sixth common reinforcement member sheath 26 are located counterclockwise at the four corners of the same square; The third common reinforcement member sheath 23 and the fourth common reinforcement member sheath 24 are connected by an introduction unit sheath 27, the fourth common reinforcement member sheath 24 and the fifth common reinforcement member sheath 25 are connected by an introduction unit sheath 27, the fifth common reinforcement member sheath 25 and the sixth common reinforcement member sheath 26 are connected by an introduction unit sheath 27, the second limiting component 213 is fixed above the right side of the sixth common reinforcement member sheath 26, a second clamping groove 215 is formed between the second limiting component 213 and the fourth common reinforcement member sheath 24, and a second clamping cavity 214 opening to the right is formed between the third common reinforcement member sheath 23, the fourth common reinforcement member sheath 24, the fifth common reinforcement member sheath 25 and the sixth common reinforcement member sheath 26; A common strength member 216 is disposed inside the first common strength member sheath 21, the second common strength member sheath 22, the third common strength member sheath 23, the fourth common strength member sheath 24, the fifth common strength member sheath 25 and the sixth common strength member sheath 26, an optical fiber 5 is disposed inside the introduction unit sheath 27, and at least one tearing opening 29 is disposed on the introduction unit sheath 27 for quickly stripping the optical fiber 5; The two introduction unit assemblies 2 are attached to each other, and the two first clamping grooves 212 located at the upper part are connected; The first self-fixing unit 3 is composed of two first clamping parts 31 and a first connecting part 33. The two first clamping parts 31 are located at both ends of the first connecting part 33. A first fiber accommodating cavity 32 is provided in the first clamping part 31. At least one optical fiber 5 is provided in the first fiber accommodating cavity 32. The two introduction unit assemblies 2 are connected by the first self-fixing unit 3, and the two first fixing parts 31 of the first self-fixing unit 3 are respectively connected to the corresponding first fixing cavity 211. The first connecting part 33 is fitted with the two connected first fixing grooves 212. A loose sleeve 4 is connected to the second fixing cavity 214, and an optical fiber 5 is arranged in the loose sleeve 4.

[0034] Example 2: Figure 5 and Figure 6 , and refer to Figure 3 and Figure 4 A butterfly-shaped optical cable with a self-fixing cable core has an outer sheath 1, a cable core is arranged inside the outer sheath 1, and the cable core is composed of three introduction unit assemblies 2, two first self-fixing units 3 and two loose tubes 4, and two adjacent introduction unit assemblies 2 are bilaterally symmetrical; The introduction unit assembly 2 is composed of a first common reinforcement member sheath 21, a second common reinforcement member sheath 22, a third common reinforcement member sheath 23, a fourth common reinforcement member sheath 24, a fifth common reinforcement member sheath 25, a sixth common reinforcement member sheath 26, five introduction unit sheaths 27, five optical fibers 5, a first limiting component 210, a second limiting component 213 and six common reinforcement members 216; In the rightmost introduction unit combination 2, in the same cross section, the first common reinforcement member sheath 21, the second common reinforcement member sheath 22, the third common reinforcement member sheath 23 and the fourth common reinforcement member sheath 24 are located clockwise at the four vertices of the same square; The first common reinforcement member sheath 21 and the second common reinforcement member sheath 22 are connected by an introduction unit sheath 27, the second common reinforcement member sheath 22 and the third common reinforcement member sheath 23 are connected by an introduction unit sheath 27, the third common reinforcement member sheath 23 and the fourth common reinforcement member sheath 24 are connected by an introduction unit sheath 27, the first limiting component 210 is fixed at the lower left side of the first common reinforcement member sheath 21, a first clamping groove 212 is formed between the first limiting component 210 and the third common reinforcement member sheath 23, and a first clamping cavity 211 opening to the left is formed between the first common reinforcement member sheath 21, the second common reinforcement member sheath 22, the third common reinforcement member sheath 23 and the fourth common reinforcement member sheath 24; The third common reinforcement member sheath 23, the fourth common reinforcement member sheath 24, the fifth common reinforcement member sheath 25 and the sixth common reinforcement member sheath 26 are located counterclockwise at the four corners of the same square; The third common reinforcement member sheath 23 and the fourth common reinforcement member sheath 24 are connected by an introduction unit sheath 27, the fourth common reinforcement member sheath 24 and the fifth common reinforcement member sheath 25 are connected by an introduction unit sheath 27, the fifth common reinforcement member sheath 25 and the sixth common reinforcement member sheath 26 are connected by an introduction unit sheath 27, the second limiting component 213 is fixed above the right side of the sixth common reinforcement member sheath 26, a second clamping groove 215 is formed between the second limiting component 213 and the fourth common reinforcement member sheath 24, and a second clamping cavity 214 opening to the right is formed between the third common reinforcement member sheath 23, the fourth common reinforcement member sheath 24, the fifth common reinforcement member sheath 25 and the sixth common reinforcement member sheath 26; A common strength member 216 is disposed inside the first common strength member sheath 21, the second common strength member sheath 22, the third common strength member sheath 23, the fourth common strength member sheath 24, the fifth common strength member sheath 25 and the sixth common strength member sheath 26, an optical fiber 5 is disposed inside the introduction unit sheath 27, and at least one tearing opening 29 is disposed on the introduction unit sheath 27 for quickly stripping the optical fiber 5; Two adjacent introduction unit assemblies 2 are attached to each other. From right to left, the first card connection groove 212 of the first introduction unit assembly 2 is connected to the first card connection groove 212 of the second introduction unit assembly 2, and the second card connection groove 215 of the second introduction unit assembly 2 is connected to the second card connection groove 215 of the third introduction unit assembly 2. The first self-fixing unit 3 is composed of two first clamping parts 31 and a first connecting part 33. The two first clamping parts 31 are located at both ends of the first connecting part 33. A first fiber accommodating cavity 32 is provided in the first clamping part 31. At least one optical fiber 5 is provided in the first fiber accommodating cavity 32. Two adjacent introduction unit assemblies 2 are clamped together through the first self-fixing unit 3. From right to left, the two first clamping parts 31 of the first first self-fixing unit 3 are respectively clamped in the first clamping cavity 211 of the first introduction unit assembly 2 and the second introduction unit assembly 2, the first connecting part 33 of the first first self-fixing unit 3 is fitted with the corresponding two connected first clamping grooves 212, the two first clamping parts 31 of the second first self-fixing unit 3 are respectively clamped in the second clamping cavity 214 of the second introduction unit assembly 2 and the third introduction unit assembly 2, and the first connecting part 33 of the second first self-fixing unit 3 is fitted with the corresponding two connected second clamping grooves 215; The loose tube 4 is clamped in the first clamping cavity 211 and the second clamping cavity 214 which are not clamped with the first clamping component 31 , and the optical fiber 5 is arranged in the loose tube 4 .

[0035] Example 3: See Figure 7 , and refer to Figure 3 and Figure 4A butterfly-shaped optical cable with a self-fixing cable core comprises an outer sheath 1, a cable core is arranged inside the outer sheath 1, the cable core is composed of two groups of sub-cable cores, the two groups of sub-cable cores are stacked up and down, the sub-cable cores are composed of four introduction unit combinations 2, three first self-fixing units 3 and two loose tubes 4, and two adjacent introduction unit combinations 2 are symmetrical. The introduction unit assembly 2 is composed of a first common reinforcement member sheath 21, a second common reinforcement member sheath 22, a third common reinforcement member sheath 23, a fourth common reinforcement member sheath 24, a fifth common reinforcement member sheath 25, a sixth common reinforcement member sheath 26, five introduction unit sheaths 27, five optical fibers 5, a first limiting component 210, a second limiting component 213 and six common reinforcement members 216; In the rightmost introduction unit assembly 2 in the same sub-cable core, in the same cross section, the first common strength member sheath 21, the second common strength member sheath 22, the third common strength member sheath 23 and the fourth common strength member sheath 24 are located clockwise at the four vertices of the same square; The first common reinforcement member sheath 21 and the second common reinforcement member sheath 22 are connected by an introduction unit sheath 27, the second common reinforcement member sheath 22 and the third common reinforcement member sheath 23 are connected by an introduction unit sheath 27, the third common reinforcement member sheath 23 and the fourth common reinforcement member sheath 24 are connected by an introduction unit sheath 27, the first limiting component 210 is fixed at the lower left side of the first common reinforcement member sheath 21, a first clamping groove 212 is formed between the first limiting component 210 and the third common reinforcement member sheath 23, and a first clamping cavity 211 opening to the left is formed between the first common reinforcement member sheath 21, the second common reinforcement member sheath 22, the third common reinforcement member sheath 23 and the fourth common reinforcement member sheath 24; The third common reinforcement member sheath 23, the fourth common reinforcement member sheath 24, the fifth common reinforcement member sheath 25 and the sixth common reinforcement member sheath 26 are located counterclockwise at the four corners of the same square; The third common reinforcement member sheath 23 and the fourth common reinforcement member sheath 24 are connected by an introduction unit sheath 27, the fourth common reinforcement member sheath 24 and the fifth common reinforcement member sheath 25 are connected by an introduction unit sheath 27, the fifth common reinforcement member sheath 25 and the sixth common reinforcement member sheath 26 are connected by an introduction unit sheath 27, the second limiting component 213 is fixed above the right side of the sixth common reinforcement member sheath 26, a second clamping groove 215 is formed between the second limiting component 213 and the fourth common reinforcement member sheath 24, and a second clamping cavity 214 opening to the right is formed between the third common reinforcement member sheath 23, the fourth common reinforcement member sheath 24, the fifth common reinforcement member sheath 25 and the sixth common reinforcement member sheath 26; A common strength member 216 is disposed inside the first common strength member sheath 21, the second common strength member sheath 22, the third common strength member sheath 23, the fourth common strength member sheath 24, the fifth common strength member sheath 25 and the sixth common strength member sheath 26, an optical fiber 5 is disposed inside the introduction unit sheath 27, and at least one tearing opening 29 is disposed on the introduction unit sheath 27 for quickly stripping the optical fiber 5; Two adjacent introduction unit assemblies 2 are attached to each other. From right to left, the first card connection groove 212 of the first introduction unit assembly 2 is connected to the first card connection groove 212 of the second introduction unit assembly 2, the second card connection groove 215 of the second introduction unit assembly 2 is connected to the second card connection groove 215 of the third introduction unit assembly 2, and the first card connection groove 212 of the third introduction unit assembly 2 is connected to the first card connection groove 212 of the fourth introduction unit assembly 2; The first self-fixing unit 3 is composed of two first clamping parts 31 and a first connecting part 33. The two first clamping parts 31 are located at both ends of the first connecting part 33. A first fiber accommodating cavity 32 is provided in the first clamping part 31. At least one optical fiber 5 is provided in the first fiber accommodating cavity 32. Two adjacent introduction unit assemblies 2 are clamped together through the first self-fixing unit 3. From right to left, the two first clamping parts 31 of the first first self-fixing unit 3 are respectively clamped in the first clamping cavity 211 of the first introduction unit assembly 2 and the second introduction unit assembly 2, the first connecting part 33 of the first first self-fixing unit 3 is fitted with the corresponding two connected first clamping grooves 212, the two first clamping parts 31 of the second first self-fixing unit 3 are respectively clamped in the second clamping cavity 214 of the second introduction unit assembly 2 and the third introduction unit assembly 2, the first connecting part 33 of the second first self-fixing unit 3 is fitted with the corresponding two connected second clamping grooves 215, the two first clamping parts 31 of the third first self-fixing unit 3 are respectively clamped in the first clamping cavity 211 of the third introduction unit assembly 2 and the fourth introduction unit assembly 2, the first connecting part 33 of the third first self-fixing unit 3 is fitted with the corresponding two connected first clamping grooves 212; The loose tube 4 is clamped in the first clamping cavity 211 and the second clamping cavity 214 which are not clamped with the first clamping component 31 , and the optical fiber 5 is arranged in the loose tube 4 .

[0036] In the above-mentioned butterfly-shaped optical cable with a self-fixed cable core, the material of the outer sheath 1 is polyethylene.

[0037] In the above-mentioned butterfly-shaped optical cable with a self-fixed cable core, the materials of the first common strength member sheath 21, the second common strength member sheath 22, the third common strength member sheath 23, the fourth common strength member sheath 24, the fifth common strength member sheath 25, the sixth common strength member sheath 26, the introduction unit sheath 27, the first limiting component 210 and the second limiting component 213 are flame-retardant polyolefin.

[0038] The above-mentioned butterfly-shaped optical cable with a self-fixed cable core is integrally formed with the first common strength member sheath 21, the second common strength member sheath 22, the third common strength member sheath 23, the fourth common strength member sheath 24, the fifth common strength member sheath 25, the sixth common strength member sheath 26, the introduction unit sheath 27, the first limiting component 210 and the second limiting component 213.

[0039] In the above-mentioned butterfly-shaped optical cable with self-fixing cable core, the material of the first self-fixing unit 3 is polybutylene terephthalate.

[0040] In the above-mentioned butterfly-shaped optical cable with a self-fixed cable core, the optical fiber 5 is a multi-mode optical fiber or a single-mode optical fiber.

[0041] In the above-mentioned butterfly-shaped optical cable with a self-fixed cable core, the common reinforcement member 216 is a phosphating steel wire.

[0042] In the present invention, the introduction unit sheath 27, the optical fiber 5 introduced into the unit sheath 27, the common strength member sheaths on both sides of the introduction unit sheath 27 and the common strength member 216 in the common strength member sheath constitute a butterfly-shaped introduction optical cable unit.

[0043] The present invention has the following beneficial effects: 1. Two adjacent introduction unit assemblies 2 can be self-fixed by the first self-fixing unit 3, so that the cable core can be integrated without using materials such as binding yarn, saving material costs and simplifying the cabling process.

[0044] 2. The introduction unit assembly 2 can be extended to both sides and fixed by the first self-fixing unit 3, so as to facilitate the formation of an optical cable with a larger number of fiber cores.

[0045] 3. The common reinforcement member 216 is shared by the introduction unit sheaths 27 on both sides, which saves the common reinforcement member 216 and the common reinforcement sheath material, saves the cost and reduces the volume.

[0046] 4. The common reinforcement members 216 are distributed in the cable core, so that the stress on the optical cable is more uniform and the mechanical properties of the optical cable are improved.

[0047] 5. The first clamping component 31 and the loose tube 4 are surrounded by a surrounding common reinforcement sheath, which improves the protection effect of the first clamping component 31 and the loose tube 4.

[0048] 6. Loose tube and butterfly introduction optical cable unit mixed wiring, expand the scope of use of optical cables.

[0049] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A butterfly-shaped optical cable with a self-fixed cable core, comprising an outer sheath (1) with a cable core disposed inside the outer sheath (1), characterized in that: The cable core is composed of at least one group of sub-cable cores. When there are multiple groups of sub-cable cores, all sub-cable cores are stacked up and down. The sub-cable core is composed of n introduction unit combinations (2) and n-1 first self-fixing units (3), n≥2, and two adjacent introduction unit combinations (2) are symmetrical. The introduction unit assembly (2) is composed of a first common reinforcement member protective layer (21), a second common reinforcement member protective layer (22), a third common reinforcement member protective layer (23), a fourth common reinforcement member protective layer (24), a fifth common reinforcement member protective layer (25), a sixth common reinforcement member protective layer (26), five introduction unit protective layers (27) and six common reinforcement members (216); In the rightmost introduction unit combination (2), in the same cross section, the first common reinforcement member sheath (21), the second common reinforcement member sheath (22), the third common reinforcement member sheath (23) and the fourth common reinforcement member sheath (24) are located clockwise at the four vertices of the same square; The first common reinforcement member sheath (21) and the second common reinforcement member sheath (22) are connected via an introduction unit sheath (27), the second common reinforcement member sheath (22) and the third common reinforcement member sheath (23) are connected via an introduction unit sheath (27), the third common reinforcement member sheath (23) and the fourth common reinforcement member sheath (24) are connected via an introduction unit sheath (27), and a first clamping cavity (211) opening to the left is formed between the first common reinforcement member sheath (21), the second common reinforcement member sheath (22), the third common reinforcement member sheath (23) and the fourth common reinforcement member sheath (24); The third common reinforcement member sheath (23), the fourth common reinforcement member sheath (24), the fifth common reinforcement member sheath (25) and the sixth common reinforcement member sheath (26) are located counterclockwise at the four vertices of the same square; The third common reinforcement member protective layer (23) and the fourth common reinforcement member protective layer (24) are connected via an introduction unit protective layer (27), the fourth common reinforcement member protective layer (24) and the fifth common reinforcement member protective layer (25) are connected via an introduction unit protective layer (27), the fifth common reinforcement member protective layer (25) and the sixth common reinforcement member protective layer (26) are connected via an introduction unit protective layer (27), and a second clamping cavity (214) opening to the right is formed between the third common reinforcement member protective layer (23), the fourth common reinforcement member protective layer (24), the fifth common reinforcement member protective layer (25) and the sixth common reinforcement member protective layer (26); Two adjacent introduction unit assemblies (2) are attached to each other, and the two adjacent introduction unit assemblies (2) are clamped together by a first self-fixing unit (3); A common strength member (216) is provided inside the first common strength member sheath (21), the second common strength member sheath (22), the third common strength member sheath (23), the fourth common strength member sheath (24), the fifth common strength member sheath (25) and the sixth common strength member sheath (26), and an optical fiber (5) is provided inside the introduction unit sheath (27).

2. The butterfly-shaped optical cable with self-fixed cable core according to claim 1, characterized in that: In the rightmost introduction unit assembly (2), within the same cross section, a first limiting component (210) is further provided below the left side of the first common reinforcement member sheath (21), and a second limiting component (213) is further provided above the right side of the sixth common reinforcement member sheath (26); a first clamping groove (212) is formed between the first limiting component (210) and the third common reinforcement member sheath (23), and a second clamping groove (215) is formed between the second limiting component (213) and the fourth common reinforcement member sheath (24); From right to left, the first snap-in groove (212) of the n-1th introduction unit assembly (2) is connected to the first snap-in groove (212) of the nth introduction unit assembly (2), and the second snap-in groove (215) of the nth introduction unit assembly (2) is connected to the second snap-in groove (215) of the n+1th introduction unit assembly (2); The first self-fixing unit (3) is composed of two first clamping components (31) and a first connecting component (33), the two first clamping components (31) are located at two ends of the first connecting component (33), a first fiber accommodating cavity (32) is provided in the first clamping component (31), and at least one optical fiber (5) is provided in the first fiber accommodating cavity (32); The first clamping cavity (211) of the n-1th introduction unit assembly (2) and the first clamping cavity (211) of the nth introduction unit assembly (2) are respectively clamped with two first clamping components (31) of the first self-fixing unit (3); The second clamping cavity (214) of the nth introduction unit assembly (2) and the second clamping cavity (214) of the (n+1)th introduction unit assembly (2) are respectively clamped with two first clamping components (31) of the first self-fixing unit (3).

3. The butterfly-shaped optical cable with self-fixed cable core according to claim 2, characterized in that: The first connecting component (33) of the first self-fixing unit (3) fits with the corresponding two connected first clamping grooves (212) or the corresponding two connected second clamping grooves (215).

4. The butterfly-shaped optical cable with self-fixed cable core according to claim 3, characterized in that: A loose tube (4) is clamped in the first clamping cavity (211) or the second clamping cavity (214) that is not clamped with the first clamping component (31), and an optical fiber (5) is arranged in the loose tube (4).

5. The butterfly-shaped optical cable with self-fixed cable core according to claim 4, characterized in that: The introduction unit sheath (27) is also provided with at least one tearing opening (29).

6. The butterfly-shaped optical cable with self-fixed cable core according to claim 5, characterized in that: The material of the outer sheath (1) is polyethylene.

7. The butterfly-shaped optical cable with self-fixed cable core according to claim 6, characterized in that: The materials of the first common reinforcement member protective layer (21), the second common reinforcement member protective layer (22), the third common reinforcement member protective layer (23), the fourth common reinforcement member protective layer (24), the fifth common reinforcement member protective layer (25), the sixth common reinforcement member protective layer (26), the introduction unit protective layer (27), the first limiting component (210) and the second limiting component (213) are flame retardant polyolefin.

8. The butterfly-shaped optical cable with self-fixed cable core according to claim 7, characterized in that: The first common reinforcement member protective layer (21), the second common reinforcement member protective layer (22), the third common reinforcement member protective layer (23), the fourth common reinforcement member protective layer (24), the fifth common reinforcement member protective layer (25), the sixth common reinforcement member protective layer (26), the introduction unit protective layer (27), the first limiting component (210) and the second limiting component (213) are integrally formed.

9. The butterfly-shaped optical cable with self-fixed cable core according to claim 8, characterized in that: The material of the first self-fixing unit (3) is polybutylene terephthalate.

10. The butterfly-shaped optical cable with self-fixed cable core according to claim 9, characterized in that: The common reinforcement member (216) is a phosphating steel wire.

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