Loose sleeve structure optical cable

Abstract

The utility model belongs to the technical field of optical cables, and discloses an optical cable with a loose tube structure, which is provided with an outer protective layer and a cable core, the cable core is composed of two optical fiber ribbon sleeves, two butterfly-shaped units and a reinforcing unit, the two optical fiber ribbon sleeves, the two butterfly-shaped units and the reinforcing unit are combined to form a hexagon, the optical fiber ribbon sleeves are parallelogram-shaped, and the butterfly-shaped units are arranged on the outer protective layer. At least one optical fiber ribbon is arranged in the optical fiber ribbon sleeve, the butterfly-shaped unit is composed of a butterfly-shaped unit main body, two reinforcing pieces and at least one optical fiber, the butterfly-shaped unit main body is similar to a rhombus, and at least one electric unit is arranged in the reinforcing unit; the cable has the beneficial effects of simple structure, wide application range, flexible laying mode, stable structure and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the optical cable technical field especially, it is a kind of loose cover structure optical cable. BACKGROUND

[0002] With the gradual development of 5G communication, a large number of optical and electrical hybrid cables suitable for 5G network are needed, and most of the current optical and electrical hybrid cables are not used based on 5G, therefore, there is poor adaptability or the need to use multiple optical and electrical hybrid cables in the application of base station connection in 5G communication network.

[0003] In the prior art, CN216411671U discloses a non-metal flame-retardant type skeleton optical cable for 5G communication, which comprises a skeleton, a central reinforcing core is arranged at the axis of the skeleton, a plurality of skeleton grooves are arranged on the outer side of the skeleton in a circumferential array, an optical fiber ribbon is arranged in each skeleton groove, and a nylon cover layer is arranged on the outer surface of each optical fiber ribbon; An arc-shaped embedded part is formed on the outer side of the skeleton and located between the positions of the adjacent two skeleton grooves, a waterproof hot melt adhesive layer is arranged on the outer surface of the skeleton, a first reinforcing rib layer is arranged in the waterproof hot melt adhesive layer and located at the position of the arc-shaped embedded part; A flame-retardant cable paste layer is arranged on the outer surface of the waterproof hot melt adhesive layer, a plastic-coated aluminum tape layer is arranged on the outer surface of the flame-retardant cable paste layer, a buffer layer is arranged on the outer surface of the plastic-coated aluminum tape layer, a semiconductor polyethylene sheath layer is arranged on the outer surface of the buffer layer, and a plurality of second reinforcing rib layers are arranged in the semiconductor polyethylene sheath layer in a circumferential array.

[0004] The above-mentioned prior art has the following defects: the internal unit cannot be independently wired, and the application scenario is single; and the electrical signal cannot be transmitted. INVENTION CONTENTS

[0005] To solve the above problems, the purpose of the utility model is to disclose a loose cover structure optical cable, which is realized by the following technical scheme.

[0006] A loose cover structure optical cable has an outer sheath and a cable core, the cable core is composed of two optical fiber ribbon sleeves, two butterfly units and one reinforcing unit, the two optical fiber ribbon sleeves, the two butterfly units and the one reinforcing unit are combined into a hexagon;

[0007] The two optical fiber ribbon sleeves are attached to the upper and lower sides of the reinforcing unit respectively, the two butterfly units are attached to the left and right sides of the reinforcing unit respectively, and the butterfly units are attached to the two optical fiber ribbon sleeves simultaneously;

[0008] The optical fiber ribbon sleeve is in the shape of a parallelogram, and at least one optical fiber ribbon is arranged in the optical fiber ribbon sleeve. The butterfly unit is composed of a butterfly unit main body, two reinforcing members, and at least one optical fiber. The butterfly unit main body is a solid body surrounded by four reinforcing unit side edges and two butterfly unit connecting edges. The four reinforcing unit side edges are respectively located on the four sides of the rhombus. The upper ends of the two reinforcing unit side edges on the upper side of the short axis of the rhombus are connected by the butterfly unit connecting edge. The lower ends of the two reinforcing unit side edges on the lower side of the short axis of the rhombus are connected by the butterfly unit connecting edge. The two butterfly unit connecting edges are parallel to the short axis of the rhombus. The two reinforcing members and the optical fiber are arranged in the butterfly unit main body. The optical fiber is arranged between the two reinforcing members. The two reinforcing members are arranged on the two sides of the short axis of the rhombus.

[0009] At least one electrical unit is arranged in the reinforcing unit.

[0010] The reinforcing unit is composed of a reinforcing unit main body. The reinforcing unit main body has a reinforcing unit upper side edge, a reinforcing unit right side long edge, a reinforcing unit right side short edge, a reinforcing unit lower side edge, a reinforcing unit left side short edge, and a reinforcing unit left side long edge. The reinforcing unit upper side edge and the reinforcing unit lower side edge are parallel and arranged horizontally. The reinforcing unit right side long edge and the reinforcing unit left side long edge are parallel. The reinforcing unit right side short edge and the reinforcing unit left side short edge are parallel. The two ends of the reinforcing unit upper side edge are respectively connected to the upper end of the reinforcing unit right side long edge and the upper end of the reinforcing unit left side short edge. The two ends of the reinforcing unit lower side edge are respectively connected to the lower end of the reinforcing unit right side short edge and the lower end of the reinforcing unit left side long edge. The lower end of the reinforcing unit left side short edge is connected to the upper end of the reinforcing unit left side long edge. The reinforcing unit left side short edge and the reinforcing unit left side long edge form an included angle that is recessed towards the middle of the reinforcing unit main body. The lower end of the reinforcing unit right side long edge is connected to the upper end of the reinforcing unit right side short edge. The reinforcing unit right side long edge and the reinforcing unit right side short edge form an included angle that is recessed towards the middle of the reinforcing unit main body. A first wire accommodating cavity is arranged in the included angle between the reinforcing unit upper side edge and the reinforcing unit left side short edge. A second wire accommodating cavity is arranged in the included angle between the reinforcing unit right side short edge and the reinforcing unit lower side edge. An electrical unit is arranged in the first wire accommodating cavity and the second wire accommodating cavity.

[0011] The long edges of the two optical fiber ribbon sleeves are respectively attached to the reinforcing unit upper side edge and the reinforcing unit lower side edge of the reinforcing unit. The two butterfly units are respectively arranged on the left and right sides of the reinforcing unit. The lower butterfly unit connecting edge of the left butterfly unit is attached to the upper side wall of the lower optical fiber ribbon sleeve. The length of the lower butterfly unit connecting edge of the left butterfly unit plus the length of the reinforcing unit lower side edge is equal to the length of the upper side wall of the lower optical fiber ribbon sleeve.

[0012] The upper side of the right side of the butterfly unit is connected with the lower side wall of the upper side of the optical fiber ribbon sleeve, and the length of the upper side of the right side of the butterfly unit is equal to the length of the upper side of the reinforcing unit.

[0013] The left side of the right side of the butterfly unit is connected with the lower side wall of the upper side of the optical fiber ribbon sleeve, and the length of the upper side of the right side of the butterfly unit is equal to the length of the upper side of the reinforcing unit.

[0014] The left side of the right side of the butterfly unit is connected with the lower side wall of the upper side of the optical fiber ribbon sleeve, and the length of the upper side of the right side of the butterfly unit is equal to the length of the upper side of the reinforcing unit.

[0015] The left side of the right side of the butterfly unit is connected with the lower side wall of the upper side of the optical fiber ribbon sleeve, and the length of the upper side of the right side of the butterfly unit is equal to the length of the upper side of the reinforcing unit.

[0016] The left side of the right side of the butterfly unit is connected with the lower side wall of the upper side of the optical fiber ribbon sleeve, and the length of the upper side of the right side of the butterfly unit is equal to the length of the upper side of the reinforcing unit.

[0017] The left side of the right side of the butterfly unit is connected with the lower side wall of the upper side of the optical fiber ribbon sleeve, and the length of the upper side of the right side of the butterfly unit is equal to the length of the upper side of the reinforcing unit.

[0018] The left side of the right side of the butterfly unit is connected with the lower side wall of the upper side of the optical fiber ribbon sleeve, and the length of the upper side of the right side of the butterfly unit is equal to the length of the upper side of the reinforcing unit.

[0019] The left side of the right side of the butterfly unit is connected with the lower side wall of the upper side of the optical fiber ribbon sleeve, and the length of the upper side of the right side of the butterfly unit is equal to the length of the upper side of the reinforcing unit.

[0020] The left side of the right side of the butterfly unit is connected with the lower side wall of the upper side of the optical fiber ribbon sleeve, and the length of the upper side of the right side of the butterfly unit is equal to the length of the upper side of the reinforcing unit.

[0021] The left side of the right side of the butterfly unit is connected with the lower side wall of the upper side of the optical fiber ribbon sleeve, and the length of the upper side of the right side of the butterfly unit is equal to the length of the upper side of the reinforcing unit.

[0022] The reinforcing member is phosphorized steel wire or glass fiber reinforced plastic rod.

[0023] The optical fiber is G.657A or G.657B.

[0024] The material of the reinforcing unit body is cross-linked polyethylene.

[0025] The electric unit is composed of a conductor and an insulating layer extruded outside the conductor.

[0026] The adjacent optical fiber ribbon sleeve, the butterfly unit and the reinforcing unit are bonded by glue.

[0027] The utility model has the following beneficial effects:

[0028] 1. The application can transmit optical signals and electrical signals, has optical fibers, optical fiber ribbons and electrical signal transmission lines, and can be laid indoors or outdoors, has a wide application range, flexible laying mode and is very suitable for communication connection in 5G communication base stations.

[0029] 2. In the application, the adjacent optical fiber ribbon sleeve, the butterfly unit and the reinforcing unit adopt surface contact, the pressure between them is smaller than that of the traditional circular sleeve, the structure is not easy to be damaged, and the compression resistance is better.

[0030] 3. The butterfly unit adopts a diamond-like structure, the butterfly unit bodies on both sides of the reinforcing member are narrow, the material consumption is less, the left and right sides of the optical fiber are wide, the protection effect of the optical fiber is better, more optical fibers can be placed, and the fiber core density in the butterfly unit is increased.

[0031] 4. The first wire containing cavity, the second wire containing cavity, the third wire containing cavity or the fourth wire containing cavity are far apart, the heat generated by the electric unit during work has little effect on each other.

[0032] 5. The first wire containing cavity, the second wire containing cavity, the third wire containing cavity and the fourth wire containing cavity are located at the four corners of the reinforcing unit, have little effect on the main structure of the reinforcing unit, and have little effect on the mechanical properties of the reinforcing unit. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a three-dimensional structure schematic diagram of a section of the utility model embodiment 1.

[0034] Figure 2 is a front view of the utility model embodiment 1.

[0035] Figure 3It is the main view of the reinforcing unit of the embodiment 1 of the utility model.

[0036] Figure 4 It is the main view of the butterfly unit of the embodiment 1 of the utility model.

[0037] Figure 5 It is the three-dimensional structure schematic diagram of the embodiment 2 of the utility model.

[0038] Figure 6 It is the main view of the embodiment 2 of the utility model.

[0039] Figure 7 It is the main view of the reinforcing unit of the embodiment 2 of the utility model.

[0040] Figure 8 It is the main view of the butterfly unit of the embodiment 3 of the utility model.

[0041] In the figure: 1. outer protective layer, 2. optical fiber ribbon sleeve, 3. optical fiber ribbon, 4. butterfly unit, 41. butterfly unit connecting edge, 42. butterfly unit main body, 43. reinforcing piece, 44. reinforcing unit side edge, 45. optical fiber, 46. tear opening, 47. optical fiber cavity, 5. reinforcing unit, 51. reinforcing unit main body, 52. first wire accommodating cavity, 53. reinforcing unit upper side edge, 54. reinforcing unit right side long edge, 55. reinforcing unit right side short edge, 56. second wire accommodating cavity, 57. reinforcing unit lower side edge, 58. reinforcing unit left side short edge, 59. reinforcing unit left side long edge, 510. third wire accommodating cavity, 511. fourth wire accommodating cavity, 6. electric unit. DETAILED DESCRIPTION

[0042] Embodiment 1: as Figures 1 to 4 A loose structure optical cable has an outer protective layer 1 and a cable core, the cable core is composed of two optical fiber ribbon sleeves 2, two butterfly units 4 and one reinforcing unit 5, the two optical fiber ribbon sleeves 2, the two butterfly units 4 and the one reinforcing unit 5 are combined into a hexagon.

[0043] The optical fiber ribbon sleeve 2 is in the shape of a parallelogram, and one optical fiber ribbon is arranged in the optical fiber ribbon sleeve 2. The butterfly unit 4 is composed of a butterfly unit main body 42, two reinforcing members 43 and one optical fiber 46. The butterfly unit main body 42 is a solid body surrounded by four reinforcing unit side edges 44 and two butterfly unit connecting edges 41. The four reinforcing unit side edges 44 are respectively located on the four edges of the rhombus. The upper ends of the two reinforcing unit side edges 44 on the upper side of the short axis of the rhombus are connected by the butterfly unit connecting edge 41. The lower ends of the two reinforcing unit side edges 44 on the lower side of the short axis of the rhombus are connected by the butterfly unit connecting edge 41. The two butterfly unit connecting edges 41 are parallel to the short axis of the rhombus. One tearing opening 46 is arranged at each end of the short axis of the rhombus. The two reinforcing members 43 and the optical fiber 46 are arranged in the butterfly unit main body 42. The optical fiber 46 is arranged between the two reinforcing members 43. The two reinforcing members 43 are arranged on the two sides of the short axis of the rhombus.

[0044] The reinforcing unit 5 is composed of a reinforcing unit main body 51. The reinforcing unit main body 51 has a reinforcing unit upper side edge 53, a reinforcing unit right side long edge 54, a reinforcing unit right side short edge 55, a reinforcing unit lower side edge 57, a reinforcing unit left side short edge 58 and a reinforcing unit left side long edge 59. The reinforcing unit upper side edge 53 and the reinforcing unit lower side edge 57 are parallel and horizontally arranged. The reinforcing unit right side long edge 54 and the reinforcing unit left side long edge 59 are parallel. The reinforcing unit right side short edge 55 and the reinforcing unit left side short edge 58 are parallel. The two ends of the reinforcing unit upper side edge 53 are respectively connected to the upper end of the reinforcing unit right side long edge 54 and the reinforcing unit left side short edge 58. The two ends of the reinforcing unit lower side edge 57 are respectively connected to the lower end of the reinforcing unit right side short edge 55 and the reinforcing unit left side long edge 59. The lower end of the reinforcing unit left side short edge 58 is connected to the upper end of the reinforcing unit left side long edge 59. The reinforcing unit left side short edge 58 and the reinforcing unit left side long edge 59 form an included angle which is recessed to the middle of the reinforcing unit main body 51. The lower end of the reinforcing unit right side long edge 54 is connected to the upper end of the reinforcing unit right side short edge 55. The reinforcing unit right side long edge 54 and the reinforcing unit right side short edge 55 form an included angle which is recessed to the middle of the reinforcing unit main body 51. A first wire accommodating cavity 52 is arranged in the included angle between the reinforcing unit upper side edge 53 and the reinforcing unit left side short edge 58. A second wire accommodating cavity 56 is arranged in the included angle between the reinforcing unit right side short edge 55 and the reinforcing unit lower side edge 57. At least one electric unit 6 is arranged in the first wire accommodating cavity 52 and the second wire accommodating cavity 56.

[0045] The long edges of the two fiber ribbon ferrules 2 are respectively attached to the upper and lower reinforcement unit side edges 53 and 57 of the reinforcement unit 5, and the two butterfly units 4 are respectively located on the left and right sides of the reinforcement unit 5. The lower butterfly unit connecting edge 41 of the left butterfly unit 4 is attached to the upper side wall of the lower fiber ribbon ferrule 2, and the sum of the length of the lower butterfly unit connecting edge 41 of the left butterfly unit 4 and the length of the reinforcement unit lower side edge 57 is equal to the length of the upper side wall of the lower fiber ribbon ferrule 2.

[0046] The upper butterfly unit connecting edge 41 of the right butterfly unit 4 is attached to the lower side wall of the upper fiber ribbon ferrule 2, and the sum of the length of the upper butterfly unit connecting edge 41 of the right butterfly unit 4 and the length of the reinforcement unit upper side edge 53 is equal to the length of the lower side wall of the upper fiber ribbon ferrule 2.

[0047] The right lower reinforcement unit side edge 44 of the left butterfly unit 4 is attached to the left long side edge 59 of the reinforcement unit and has the same length, the right upper reinforcement unit side edge 44 of the left butterfly unit 4 is attached to the left short side edge 58 of the reinforcement unit, and the right upper reinforcement unit side edge 44 of the left butterfly unit 4 is attached to the left side wall of the upper fiber ribbon ferrule 2. The sum of the length of the left short side edge 58 of the reinforcement unit and the length of the left side wall of the upper fiber ribbon ferrule 2 is equal to the length of the reinforcement unit side edge 44.

[0048] The left upper reinforcement unit side edge 44 of the right butterfly unit 4 is attached to the right long side edge 54 of the reinforcement unit and has the same length, the left lower reinforcement unit side edge 44 of the right butterfly unit 4 is attached to the right long side edge 54 of the reinforcement unit, and the left lower reinforcement unit side edge 44 of the right butterfly unit 4 is attached to the right side wall of the lower fiber ribbon ferrule 2. The sum of the length of the right long side edge 54 of the reinforcement unit and the length of the right side wall of the lower fiber ribbon ferrule 2 is equal to the length of the reinforcement unit side edge 44.

[0049] Embodiment 2: as Figures 5 to 7 , and referring to Figure 4 , this embodiment is basically the same as embodiment 1, the difference is that a fourth wire containing cavity 511 is arranged in the included angle between the upper side edge 53 of the reinforcement unit and the right long side edge 54 of the reinforcement unit, and a third wire containing cavity 510 is arranged in the included angle between the left long side edge 59 of the reinforcement unit and the lower side edge 57 of the reinforcement unit, and at least one electrical unit 6 is arranged in the fourth wire containing cavity 511 and the third wire containing cavity 510.

[0050] Embodiment 3: as Figure 8 , and referring to Figures 1 to 3The embodiment is basically same as that of the embodiment 1, except that an oval fiber cavity 47 is arranged between the two reinforcing members 43, a plurality of optical fibers 45 are arranged in the fiber cavity 47, the long axis of the oval fiber cavity 47 is arranged on the same line as the short axis of the rhombus, and the common tangent line of the reinforcing member 43 and the fiber cavity 47 is parallel to the corresponding reinforcing unit side edge 44.

[0051] The outer protective layer 1 is made of polyethylene.

[0052] The optical fiber band sleeve 2 is made of modified polypropylene or polybutylene terephthalate.

[0053] The optical fiber band 3 is made of a plurality of optical fibers 45 through resin and banding.

[0054] The butterfly unit main body 42 is made of flame-retardant polyolefin.

[0055] The reinforcing member 43 is a phosphatized steel wire or a glass fiber reinforced plastic rod.

[0056] The optical fiber 45 is of the G.657A or G.657B type.

[0057] The reinforcing unit main body 51 is made of cross-linked polyethylene.

[0058] The electrical unit 6 is composed of a conductive body and an insulating layer extruded outside the conductive body.

[0059] In the application, the adjacent optical fiber band sleeve 2, butterfly unit 4 and reinforcing unit 5 are bonded by glue.

[0060] The utility model has the following beneficial effects:

[0061] 1. The application can transmit optical signals and electrical signals, has optical fibers, optical fiber bands and electrical signal transmission lines, can be laid indoors or outdoors, has a wide application range, flexible laying mode and is very suitable for communication connection in a 5G communication base station.

[0062] 2. In the application, the adjacent optical fiber band sleeve 2, butterfly unit 4 and reinforcing unit 5 adopt surface contact, the pressure between them is smaller than that of the traditional circular sleeve, the structure is not easy to be damaged, and the pressure resistance is better.

[0063] 3. The butterfly unit 4 adopts a similar diamond structure, the two sides of the reinforcing member 43 are narrow, the material is less used, and the left and right sides of the optical fiber 45 are wide, the protection effect of the optical fiber 45 is better, or more optical fibers 45 can be placed, and the fiber core density in the butterfly unit 4 is increased.

[0064] 4. The first wire accommodating cavity 52, the second wire accommodating cavity 56, the third wire accommodating cavity 510 or the fourth wire accommodating cavity 511 are far apart, and the heat generated by the internal electrical unit 6 when working has less influence on each other.

[0065] 5. The first wire accommodating cavity 52, the second wire accommodating cavity 56, the third wire accommodating cavity 510 and the fourth wire accommodating cavity 511 are located at the four corners of the reinforcing unit 5, and have less influence on the main structure of the reinforcing unit 5 and the mechanical properties of the reinforcing unit 5.

[0066] The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as a limitation of the present application. The protection scope of the present application should be based on the technical solutions claimed in the claims, including the equivalent replacement solutions of the technical features claimed in the claims. That is, the equivalent replacement improvement within this range is also within the protection scope of the present application.

Claims

1. A loose tube structural optical cable having an outer sheath (1) and a cable core, characterized in that: The cable core is composed of two optical fiber ribbon sleeves (2), two butterfly units (4) and a reinforcing unit (5), the two optical fiber ribbon sleeves (2), the two butterfly units (4) and the reinforcing unit (5) are combined into a hexagon; the two optical fiber ribbon sleeves (2) are respectively attached to the upper and lower sides of the reinforcing unit (5), the two butterfly units (4) are respectively attached to the left and right sides of the reinforcing unit (5), and the butterfly unit (4) is attached to the two optical fiber ribbon sleeves (2) at the same time; the optical fiber ribbon sleeve (2) is a parallelogram, and at least one optical fiber ribbon is arranged in the optical fiber ribbon sleeve (2), the butterfly unit (4) is composed of a butterfly unit main body (42), two reinforcing members (43) and at least one optical fiber (46), the butterfly unit main body (42) is a solid body surrounded by four reinforcing unit side edges (44) and two butterfly unit connecting edges (41), the four reinforcing unit side edges (44) are respectively located on the four sides of the rhombus, the upper ends of the two reinforcing unit side edges (44) on the upper side of the short axis of the rhombus are connected through the butterfly unit connecting edge (41), the lower ends of the two reinforcing unit side edges (44) on the lower side of the short axis of the rhombus are connected through the butterfly unit connecting edge (41), the two butterfly unit connecting edges (41) are parallel to the short axis of the rhombus, the two reinforcing members (43) and the optical fiber (46) are located in the butterfly unit main body (42), the optical fiber (46) is located between the two reinforcing members (43), and the two reinforcing members (43) are located on the two sides of the short axis of the rhombus, and the reinforcing unit (5) is provided with at least one electrical unit (6).

2. A loose tube structural optical cable according to claim 1, characterized in that: The reinforcing unit (5) is composed of a reinforcing unit body (51), which has a reinforcing unit upper side (53), a reinforcing unit right side long edge (54), a reinforcing unit right side short edge (55), a reinforcing unit lower side (57), a reinforcing unit left side short edge (58) and a reinforcing unit left side long edge (59). The reinforcing unit upper side (53) and the reinforcing unit lower side (57) are parallel and horizontally arranged. The reinforcing unit right side long edge (54) and the reinforcing unit left side long edge (59) are parallel. The reinforcing unit right side short edge (55) and the reinforcing unit left side short edge (58) are parallel. The two ends of the reinforcing unit upper side (53) are connected with the upper end of the reinforcing unit right side long edge (54) and the reinforcing unit left side short edge (58) respectively. The two ends of the reinforcing unit lower side (57) are connected with the lower end of the reinforcing unit right side short edge (55) and the reinforcing unit left side long edge (59) respectively. The lower end of the reinforcing unit left side short edge (58) is connected with the upper end of the reinforcing unit left side long edge (59). The reinforcing unit left side short edge (58) and the reinforcing unit left side long edge (59) form an included angle which is recessed to the middle of the reinforcing unit body (51). The lower end of the reinforcing unit right side long edge (54) is connected with the upper end of the reinforcing unit right side short edge (55). The reinforcing unit right side long edge (54) and the reinforcing unit right side short edge (55) form an included angle which is recessed to the middle of the reinforcing unit body (51). A first wire containing cavity (52) is arranged in the included angle between the reinforcing unit upper side (53) and the reinforcing unit left side short edge (58). A second wire containing cavity (56) is arranged in the included angle between the reinforcing unit right side short edge (55) and the reinforcing unit lower side (57). The electric unit (6) is located in the first wire containing cavity (52) and the second wire containing cavity (56). The long edges of the two fiber optic ribbon sleeves (2) are respectively attached to the reinforcing unit upper side (53) and the reinforcing unit lower side (57) of the reinforcing unit (5). The two butterfly units (4) are respectively located on the left and right sides of the reinforcing unit (5). The lower butterfly unit connecting edge (41) of the left butterfly unit (4) is attached to the upper side wall of the lower fiber optic ribbon sleeve (2). The length of the lower butterfly unit connecting edge (41) of the left butterfly unit (4) plus the length of the reinforcing unit lower side (57) is equal to the length of the upper side wall of the lower fiber optic ribbon sleeve (2). The upper butterfly unit connecting edge (41) of the right butterfly unit (4) is attached to the lower side wall of the upper fiber optic ribbon sleeve (2). The length of the upper butterfly unit connecting edge (41) of the right butterfly unit (4) plus the length of the reinforcing unit upper side (53) is equal to the length of the lower side wall of the upper fiber optic ribbon sleeve (2).The right lower side of the reinforcing unit side edge (44) of the left side of the butterfly unit (4) is in contact with the left side long edge (59) of the reinforcing unit and has the same length, the right upper side of the reinforcing unit side edge (44) of the left side of the butterfly unit (4) is in contact with the left side short edge (58) of the reinforcing unit, and the right upper side of the reinforcing unit side edge (44) of the left side of the butterfly unit (4) is in contact with the left side wall of the upper optical fiber ribbon sleeve (2), and the sum of the lengths of the left side wall of the upper optical fiber ribbon sleeve (2) and the left side short edge (58) of the reinforcing unit is equal to the length of the reinforcing unit side edge (44); the left upper side of the reinforcing unit side edge (44) of the right side of the butterfly unit (4) is in contact with the right side long edge (54) of the reinforcing unit and has the same length, the left lower side of the reinforcing unit side edge (44) of the right side of the butterfly unit (4) is in contact with the right side long edge (54) of the reinforcing unit, and the left lower side of the reinforcing unit side edge (44) of the right side of the butterfly unit (4) is in contact with the right side wall of the lower optical fiber ribbon sleeve (2), and the sum of the lengths of the right side wall of the lower optical fiber ribbon sleeve (2) and the right side long edge (54) of the reinforcing unit is equal to the length of the reinforcing unit side edge (44).

3. A loose tube structural optical cable according to claim 2, characterized in that: A fourth wire accommodating cavity (511) is arranged in the included angle between the reinforcing unit upper side edge (53) and the reinforcing unit right side long edge (54), a third wire accommodating cavity (510) is arranged in the included angle between the reinforcing unit left side long edge (59) and the reinforcing unit lower side edge (57), and at least one electrical unit (6) is arranged in the fourth wire accommodating cavity (511) and the third wire accommodating cavity (510).

4. A loose tube structural optical cable according to claim 3, characterized in that: An elliptical optical fiber accommodating cavity (47) is arranged between the two reinforcing members (43), and at least one optical fiber (45) is arranged in the optical fiber accommodating cavity (47), the major axis of the elliptical optical fiber accommodating cavity (47) is located on the same straight line as the short axis of the rhombus, and the common tangent line of the reinforcing member (43) and the optical fiber accommodating cavity (47) is parallel to the corresponding reinforcing unit side edge (44).

5. A loose tube structural optical cable according to claim 4, characterized in that: A tearing opening (46) is arranged at each end of the short axis of the rhombus.

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