Optical fiber ribbon optical cable with special-shaped butterfly-shaped introduction unit

Abstract

The invention belongs to the technical field of optical cables, and discloses an optical fiber ribbon optical cable with special-shaped butterfly-shaped leading-in units, which is provided with a plurality of first optical fiber ribbons, a plurality of special-shaped butterfly-shaped leading-in units, four reinforcing components, a frame component and an outer sheath, the special-shaped butterfly-shaped leading-in units are embedded on frame strips of the frame component, and the special-shaped butterfly-shaped leading-in units and the frame component form a cable core. The cross section of the cable core is rectangular; the reinforcing part is located in the extension cavity, all the first optical fiber ribbons are distributed in the center cavity in a stacked mode, and the cable core is coated with the outer sheath. The optical fiber connector has the main beneficial technical effects that the density of the fiber core is higher, the manufacturing is easier, the number of butterfly-shaped introduction units is larger, the disassembly and assembly are more convenient, the space utilization rate is higher, the optical fiber connector can be suitable for various optical fiber connectors in the prior art, and the compression resistance and the buffering capability are stronger.

Description

Technical Field

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

[0002] With the growing demand for broadband access, especially high fiber core density access in data centers / distribution centers, the demand for multi-unit butterfly-type drop cables accompanied by multi-fiber ribbon access continues to grow.

[0003] CN118068501A discloses a butterfly-shaped optical cable with an optical fiber ribbon, which has a receiving component, an optical fiber ribbon, four butterfly-shaped units, a reinforcing member, a protective layer, and an outer sheath. The receiving component is composed of a base strip with a U-shaped cross section and four combined components. The combined components are composed of first to fourth dividing strips that are parallel to each other and are distributed in sequence. There are grooves between adjacent dividing strips. The combined components extend outward from the outer surface of the base strip, and the base strip has a central cavity inside; an angle cavity is formed between adjacent combined components; the reinforcing member is located in the central cavity, the butterfly-shaped units are located in the angle cavity, and the optical fiber ribbon is located in the groove. It can expand the number of cores of the optical fiber ribbon, but the number of butterfly-shaped introduction units cannot be met when more needs are met. Summary of the invention

[0004] To solve the above problems, the purpose of the present invention is to disclose an optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit, which is achieved by adopting the following technical solutions.

[0005] An optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit, comprising a plurality of first optical fiber ribbons, a plurality of special-shaped butterfly-shaped introduction units, four reinforcing components, a frame component, and an outer sheath, wherein the special-shaped butterfly-shaped introduction unit is composed of a second optical fiber ribbon, two reinforcing components, and a cross-section of The frame member is composed of four frame bars and four extension bars, and the four frame bars are assembled into a frame body with an approximately rectangular cross-section. The frame body has a hollow central cavity, and the extension bars have extension cavities inside. The four extension bars extend outward from the four corners of the frame body along the diagonal extension direction of the frame body and are combined with the corresponding edges of the frame body. The outer edges of the frame bars have a central extension. The edge snap-in grooves are recessed in the cavity direction, and the edge snap-in grooves are located at both ends of the frame bar; each frame bar is embedded with a special-shaped butterfly-shaped introduction unit, and the two protruding parts of the special-shaped butterfly-shaped introduction unit are respectively embedded in the two edge snap-in grooves of the frame bar. In the assembled state, the lower edges of all the accommodating bodies are tightly attached to the outer edges of the frame bar, and the outer edges and cushion layers of all the accommodating bodies constitute the cable core, and the cross-section of the cable core is rectangular; the reinforcement component is located in the extension cavity, and each extension cavity has only one reinforcement component. All the first optical fiber ribbons are distributed in the central cavity in a stacked manner, and the outer sheath is covered on the outside of the cable core.

[0006] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described above is characterized in that: the outer edge of the frame bar is also provided with n intermediate snap-in grooves recessed toward the central cavity, and the intermediate snap-in grooves are located between the two ends of the frame bar; in the assembled state, n+1 special-shaped butterfly-shaped introduction units are embedded in the frame bar; when the number of intermediate snap-in grooves on the frame bar is n=1, the first protruding part of the first special-shaped butterfly-shaped introduction unit is embedded in an edge snap-in groove of the frame bar, the second protruding part of the first special-shaped butterfly-shaped introduction unit is embedded in the intermediate snap-in groove, the first protruding part of the second special-shaped butterfly-shaped introduction unit is embedded in the intermediate snap-in groove of the frame bar, and the second protruding part of the second special-shaped butterfly-shaped introduction unit is embedded in another edge snap-in groove; when the number of intermediate snap-in grooves on the frame bar is n≥2 and is a positive integer, from one edge snap-in groove to another edge snap-in groove of the frame bar, the intermediate snap-in grooves are respectively referred to as the first intermediate snap-in groove, the second intermediate snap-in groove, ..., the n-1th intermediate snap-in groove, The nth middle snap-fit ​​groove; the first protruding part of the first special-shaped butterfly introduction unit is embedded in an edge snap-fit ​​groove of the frame bar, the second protruding part of the first special-shaped butterfly introduction unit is embedded in the first middle snap-fit ​​groove, the first protruding part of the second special-shaped butterfly introduction unit is embedded in the first middle snap-fit ​​groove of the frame bar, the second protruding part of the second special-shaped butterfly introduction unit is embedded in the second middle snap-fit ​​groove, ..., the first protruding part of the n+1th special-shaped butterfly introduction unit is embedded in the nth middle snap-fit ​​groove of the frame bar, the second protruding part of the n+1th special-shaped butterfly introduction unit is embedded in another edge snap-fit ​​groove of the frame bar; the protruding parts of each middle snap-fit ​​groove are closely attached to each other; The lower edges of all the accommodating bodies are in close contact with the outer edges of the frame bars, the reinforcing components are located in the extension cavities, each extension cavity has only one reinforcing component, all the first optical fiber ribbons are distributed in the central cavity in a stacked manner, and the outer sheath covers the cable core.

[0007] The present application has the following major beneficial technical effects: higher fiber core density, easier manufacturing, more butterfly-shaped introduction units, more convenient assembly and disassembly, higher space utilization, adaptability to a variety of optical fiber connectors in the prior art, and stronger pressure resistance and buffering capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the three-dimensional structure after dissection of Example 1.

[0009] Figure 2 for Figure 1 Schematic diagram of the enlarged cross-section structure.

[0010] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of a section of the heteromorphic butterfly introduction unit used in the dissection.

[0011] Figure 4 for Figure 3 Schematic diagram of the enlarged cross-section structure.

[0012] Figure 5 for Figure 1 Schematic diagram of the three-dimensional structure of a section of the dissected frame components used in.

[0013] Figure 6 for Figure 6 Schematic diagram of the enlarged cross-section structure.

[0014] Figure 7 Schematic diagram of the cross-sectional structure of the frame component of implementation example 2. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand and implement this patent, the marks in the drawings are now described in detail in conjunction with the drawings in the specification.

[0016] In the figure: 1—first optical fiber ribbon, 2—special-shaped butterfly-shaped introduction unit, 3—reinforcement component, 4—frame component, 5—protective layer, 6—outer sheath, 11—optical fiber, 12—adhesive layer, 21—optical fiber, 22—adhesive protective layer, 23—reinforcement component, 24—butterfly-shaped sheath, 241—first protruding component, 242—second protruding component, 243—accommodating body, 31—reinforcement component, 32—cushion, 41—frame bar, 42—extension bar, 410—central cavity, 411—edge snap-fit ​​groove, 412—middle snap-fit ​​groove, 420—extension cavity, L—distance between the outer edge of the frame bar and the outer edge of the extension bar in the corresponding direction.

[0017] Implementation Example 1: Please see Figures 1 to 6 , an optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit, comprising a plurality of first optical fiber ribbons 1, eight special-shaped butterfly-shaped introduction units 2, four reinforcing components 3, a frame component 4, a protective layer 5, and an outer sheath 6, each of the first optical fiber ribbons is composed of a plurality of optical fibers 11 and an adhesive layer 12, the plurality of optical fibers are arranged in a row and adjacent optical fibers do not contact each other, in the first optical fiber ribbon, the adhesive layer covers all the optical fibers as a whole or by edge bonding; the reinforcing component 3 is composed of a reinforcing member 31 and a cushion layer 32, and the cushion layer covers the reinforcing member; the characteristics are: The special-shaped butterfly introduction unit is composed of a second optical fiber ribbon, two reinforcement pieces 23, and a butterfly sheath 24. The butterfly sheath is an integrated structure. The second optical fiber ribbon is composed of a plurality of optical fibers 21 and an adhesive sheath 22. The plurality of optical fibers are arranged in a row and adjacent optical fibers do not contact each other. The second optical fiber ribbon and the adhesive sheath are integrally covered or edge-bonded to cover all the optical fibers. The butterfly sheath is composed of a first protruding part 241, a housing 243, and a second protruding part 242 connected in sequence. The first protruding part is perpendicular to the housing, and the second protruding part is perpendicular to the housing. The first protruding part and the second protruding part are located on the same side of the housing. The two reinforcement pieces are respectively located in the first protruding part and the second protruding part. The second optical fiber ribbon is located in the housing. Figure 4 In the embodiment, the edge of the accommodation body above the second optical fiber ribbon is called the upper edge of the accommodation body, and the edge of the accommodation body below the second optical fiber ribbon is called the lower edge of the accommodation body; The frame component is composed of four frame bars 41 and four extension bars 42. The frame component is an integrated structure. The four frame bars are connected end to end in sequence to form a frame body. The cross section of the frame body is approximately square, so the frame body is approximately a regular quadrangular prism. The frame body has a hollow central cavity 410. The extension bar is a small regular quadrangular prism structure. The extension bar has an axially penetrating extension cavity 420. The four extension bars extend outward from the four edges of the frame body and are combined with the corresponding edges of the frame body. The outer edge of the frame bar has an edge snap-fit ​​groove 411 and a middle snap-fit ​​groove 412 that are concave toward the central cavity. The edge snap-fit ​​groove is located at both ends of the frame bar, and the middle snap-fit ​​groove is located between the two ends of the frame bar. The distance between the outer edge of each frame bar and the outer edges of the two adjacent extension bars is L; Two special-shaped butterfly-shaped introduction units are embedded in each frame bar, the first protruding part of the first special-shaped butterfly-shaped introduction unit is embedded in the first edge snap-fit ​​groove of the frame bar, the second protruding part of the first special-shaped butterfly-shaped introduction unit is embedded in the middle snap-fit ​​groove of the frame bar, the first protruding part of the second special-shaped butterfly-shaped introduction unit is embedded in the middle snap-fit ​​groove of the frame bar and is tightly attached to the second protruding part of the first special-shaped butterfly-shaped introduction unit, and the second protruding part of the second special-shaped butterfly-shaped introduction unit is embedded in the second edge snap-fit ​​groove of the frame bar. In the assembled state, the lower edges of all the accommodating bodies are tightly attached to the outer edges of the frame bars, and the outer edges of all the accommodating bodies and the two side surfaces of each cushion layer 32 are on the same regular quadrangular prism to form a cable core; The reinforcing component is located in the extension cavity 420, and each extension cavity has only one reinforcing component. All first optical fiber ribbons 1 are distributed in the central cavity 410 in a stacked manner, the protective layer is coated on the outside of the cable core, and the outer sheath is coated on the outside of the protective layer.

[0018] In the above-mentioned optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit, L is not less than the thickness of the accommodating body 243 .

[0019] Of course, further, in the present embodiment, it is not limited to the case of eight special-shaped butterfly introduction units 2, but can also be multiple others. For example, each frame bar 41 can be snapped with not only two special-shaped butterfly introduction units 2, but also multiple others. In this case, there are multiple middle snap-fitting grooves on each frame bar 41, and a first protruding part 241 and a second protruding part 242 are snapped in each middle snap-fitting groove.

[0020] Furthermore, in the present application, it is not limited to a structure in which the cross-section of the frame body is approximately square, but can also be a non-square rectangular structure. In this case, the four frame bars 41 are divided into two groups, and the lengths of the two bars in each group are equal, so the frame body is a quadrangular prism structure with a cross-section approximately rectangular. In this case, the lengths of the special-shaped butterfly-shaped introduction units engaged on the frame bodies of different lengths are the same or different. The different lengths of the special-shaped butterfly-shaped introduction units refer to the different lengths of the accommodating body 243, which can be suitable for different sizes; for example, the same frame body is engaged with special-shaped butterfly-shaped introduction units of different lengths, or different frame bodies are engaged with special-shaped butterfly-shaped introduction units of different lengths. This makes it easy to distinguish and flexibly apply and to make more reasonable use of space resources.

[0021] The length of the special-shaped butterfly introduction unit, such as the nominal length of 5mm, 4mm, 3mm, and 2mm, can be suitable for optical fiber connectors of different specifications in the existing technology, realizing access for different needs and avoiding the problem of mismatch with the optical fiber interface of the optical equipment purchased by the user when only one specification is accessed.

[0022] In this embodiment, the cross section is called a rectangular structure that is approximately square or non-square because: the frame bar has a snap-fit ​​groove.

[0023] In this embodiment, the protective layer 5 may not be included, and only the outer sheath 6 is provided. The outer sheath 6 is directly coated on the cable core.

[0024] Implementation Example 2: Please see Figure 7 , and refer to Figures 1 to 6 , an optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit, which is basically the same as embodiment 1, except that: it only has four special-shaped butterfly-shaped introduction units 2, and there is no middle engaging groove, that is, only one special-shaped butterfly-shaped introduction unit 2 is engaged on each frame bar 41.

[0025] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application comprises a plurality of first optical fiber ribbons 1, a plurality of special-shaped butterfly-shaped introduction units 2, four reinforcing components 3, a frame component 4, and an outer sheath 6, and is characterized in that: The special butterfly-shaped introduction unit is composed of a second optical fiber ribbon, two reinforcement members 23, and a cross-section of The butterfly-shaped sheath 24 is composed of the vertical parts on the left and right sides are called protruding parts, and the horizontal part in the middle is called the accommodating body. The two reinforcing members 23 are respectively located in the two protruding parts, and the second optical fiber ribbon is located in the accommodating body. The frame component is composed of four frame bars 41 and four extension bars 42. The four frame bars 41 are assembled into a frame body with an approximately rectangular cross section. The frame body has a hollow central cavity 410, and the extension bars have extension cavities 420. The four extension bars extend outward from four corners of the frame body along the diagonal extension direction of the frame body and are combined with the corresponding edges of the frame body. The outer edges of the frame bars have edge snap-fit ​​grooves 411 that are recessed toward the central cavity, and the edge snap-fit ​​grooves are located at both ends of the frame bars. A special-shaped butterfly introduction unit is embedded in each frame bar, and the two protruding parts of the special-shaped butterfly introduction unit are respectively embedded in the two edge snap-in grooves of the frame bar. In the assembled state, the lower edges of all the containers are tightly attached to the outer edges of the frame bar, and the outer edges and cushion layers of all the containers constitute the cable core, and the cross-section of the cable core is rectangular; the reinforcement component is located in the extension cavity 420, and each extension cavity has only one reinforcement component. All the first optical fiber ribbons 1 are distributed in the central cavity 410 in a stacked manner, and the outer sheath is covered on the outside of the cable core.

[0026] The optical fiber ribbon cable with the special-shaped butterfly-shaped introduction unit described above has n middle snap-fit ​​grooves 412 on the outer edge of the frame bar, which are recessed toward the central cavity, and the middle snap-fit ​​grooves are located between the two ends of the frame bar; In the assembled state, n+1 special-shaped butterfly-shaped lead-in units are embedded in the frame bar, and when the number of the middle engaging grooves on the frame bar is n=1, the first protruding part of the first special-shaped butterfly-shaped lead-in unit is embedded in an edge engaging groove of the frame bar, the second protruding part of the first special-shaped butterfly-shaped lead-in unit is embedded in the middle engaging groove, the first protruding part of the second special-shaped butterfly-shaped lead-in unit is embedded in the middle engaging groove of the frame bar, and the second protruding part of the second special-shaped butterfly-shaped lead-in unit is embedded in the other edge engaging groove; When the number of intermediate snap-in grooves on the frame bar is n≥2 and is a positive integer, from one edge snap-in groove to another edge snap-in groove of the frame bar, the intermediate snap-in grooves are respectively called the first intermediate snap-in groove, the second intermediate snap-in groove, ..., the n-1th intermediate snap-in groove, and the nth intermediate snap-in groove; the first protruding part of the first special-shaped butterfly introduction unit is embedded in an edge snap-in groove of the frame bar, the second protruding part of the first special-shaped butterfly introduction unit is embedded in the first intermediate snap-in groove, the first protruding part of the second special-shaped butterfly introduction unit is embedded in the first intermediate snap-in groove of the frame bar, the second protruding part of the second special-shaped butterfly introduction unit is embedded in the second intermediate snap-in groove, ..., the first protruding part of the n+1th special-shaped butterfly introduction unit is embedded in the nth intermediate snap-in groove of the frame bar, and the second protruding part of the n+1th special-shaped butterfly introduction unit is embedded in another edge snap-in groove of the frame bar; the protruding parts of each intermediate snap-in groove are closely attached to each other; The lower edges of all the containers are in close contact with the outer edges of the frame bars, the reinforcing components are located in the extension cavity 420, each extension cavity has only one reinforcing component, all the first optical fiber ribbons 1 are distributed in the central cavity 410 in a stacked manner, and the outer sheath is wrapped around the cable core.

[0027] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the type of the optical fiber 11 is single-mode or multi-mode.

[0028] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the material of the adhesive layer 12 is plastic.

[0029] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the type of the optical fiber 21 is single-mode or multi-mode.

[0030] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the material of the bonding sheath 22 is plastic.

[0031] The optical fiber ribbon cable with a special-shaped butterfly introduction unit described in the present application is characterized in that the material of the reinforcement member 23 is steel wire, aluminum wire, iron wire, copper wire, copper alloy wire, aluminum alloy wire, glass fiber reinforced plastic, aramid yarn, polyester yarn or glass fiber yarn.

[0032] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the butterfly-shaped sheath 24 is an integrated structure and is made of plastic.

[0033] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the material of the first protruding part 241 is plastic.

[0034] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the material of the second protruding part 242 is plastic.

[0035] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the material of the accommodation body 243 is plastic.

[0036] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the material of the reinforcement member 31 is steel wire or aluminum wire or iron wire or copper wire or copper alloy wire or aluminum alloy wire or glass fiber reinforced plastic or aramid yarn or polyester yarn or glass fiber yarn; when it is copper wire or aluminum wire or copper alloy wire or aluminum alloy wire, it can be used as an element to increase the tensile strength of the member, and can also be used to transmit power and / or transmit electrical signals.

[0037] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the material of the cushion layer 32 is plastic.

[0038] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the material of the frame strip 41 is plastic.

[0039] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the material of the extension strip 42 is plastic.

[0040] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the frame component 4 is an integrated structure and is made of plastic.

[0041] The optical fiber ribbon cable with a special-shaped butterfly introduction unit described in the present application is characterized in that the material of the protective layer 5 is a water-blocking tape or water-blocking yarn or aramid yarn or polyester tape or glass fiber yarn or polyester yarn or steel tape or aluminum tape or copper tape, which plays the role of covering the inner components of the cable core and has functional protection effects, such as waterproofing, pressure resistance, etc. It is not limited to one layer, and can be a multi-layer composite, that is, a layer-in-layer structure, and different layers have different functions.

[0042] The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit described in the present application is characterized in that the material of the outer sheath 6 is plastic.

[0043] In the present application, the frame component 4 is an integrated structure, which is formed by one-time extrusion on a sheath extruder at a speed of more than 250 meters per minute. During the forming process, other components are inserted or / and embedded, and are covered with a possible protective layer 5 and an outer sheath 6. The purpose of one-time molding of the sheath is achieved, so the production speed is fast and the qualified rate is high. The outer sheath can be produced into a shape matching the cable core, such as a rectangle or a square.

[0044] The optical fiber ribbon cable in the present application has a high space utilization rate. Compared with the structure in the prior art, due to the structural improvement of the special-shaped butterfly-shaped introduction unit, on the one hand, its length and overall width can be suitable for the optical fiber connector in the prior art, and no additional optical fiber connector needs to be designed, and it can be matched and used; on the other hand, it can be snapped on the frame component, the two are combined into one, and are easy to disassemble and assemble, and the space is effectively utilized without causing waste of space. Moreover, it can snap on special-shaped butterfly-shaped introduction units of the same and / or different sizes, so it is very flexible to use; in addition, if the cross-section of the frame component 4 is rectangular, different numbers of special-shaped butterfly-shaped introduction units can be snapped on the length and width. Butterfly-shaped introduction unit; in addition, after engagement, it is preferred that the special-shaped butterfly-shaped introduction unit and the extension strip 42 form a rectangle / square, that is, the corresponding surfaces are on the corresponding planes. Of course, it can also be slightly lower than the surface of the extension strip 42. In this case, when under external pressure, it can first be pressed on the extension strip 42, which plays a role in improving the pressure resistance and impact buffering capabilities of the special-shaped butterfly-shaped introduction unit, the first optical fiber ribbon, etc.; in the present application, the central cavity 410 can be a square cross-section or a rectangular cross-section, which increases the capacity, can accommodate a larger number of first optical fiber ribbons and increase the number of optical fibers in the first optical fiber ribbon, thereby greatly improving the core density of the optical cable.

[0045] This application is very suitable for the laying of rectangular pipes and rectangular or rectangular open grooves, with fast construction speed and high space utilization.

[0046] The present application has the following major beneficial technical effects: higher fiber core density, easier manufacturing, more butterfly-shaped introduction units, more convenient assembly and disassembly, higher space utilization, adaptability to a variety of optical fiber connectors in the prior art, and stronger pressure resistance and buffering capabilities.

[0047] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit, comprising a plurality of first optical fiber ribbons, a plurality of special-shaped butterfly-shaped introduction units, four reinforcing components, a frame component, and an outer sheath, characterized in that The butterfly-shaped introduction unit is composed of a second optical fiber ribbon, two reinforcement members, and a cross section of The frame component is composed of four frame bars and four extension bars, and the four frame bars are assembled into a frame body with an approximately rectangular cross-section. The frame body has a hollow central cavity, and the extension bars have extension cavities inside. The four extension bars extend outward from the four corners of the frame body along the diagonal extension direction of the frame body and are combined with the corresponding edges of the frame body. The outer edge of the frame bar has an edge snap-in groove that is recessed toward the central cavity. The edge snap-in grooves are located at both ends of the frame bar; a special-shaped butterfly-shaped introduction unit is embedded in each frame bar, and the two protruding parts of the special-shaped butterfly-shaped introduction unit are respectively embedded in the two edge snap-in grooves of the frame bar. In the assembled state, the lower edges of all the containers are tightly attached to the outer edges of the frame bar, and the outer edges and cushion layers of all the containers constitute the cable core, and the cross-section of the cable core is rectangular; the reinforcement component is located in the extension cavity, and each extension cavity has only one reinforcement component. All the first optical fiber ribbons are distributed in the central cavity in a stacked manner, and the outer sheath is covered on the outside of the cable core.

2. The optical fiber ribbon cable with a special-shaped butterfly introduction unit according to claim 1, characterized in that : The outer edge of the frame bar is also provided with n intermediate snap-fit ​​grooves recessed toward the central cavity, and the intermediate snap-fit ​​grooves are located between the two ends of the frame bar; in the assembled state, n+1 special-shaped butterfly-shaped introduction units are embedded in the frame bar; when the number of intermediate snap-fit ​​grooves on the frame bar is n=1, the first protruding part of the first special-shaped butterfly-shaped introduction unit is embedded in an edge snap-fit ​​groove of the frame bar, the second protruding part of the first special-shaped butterfly-shaped introduction unit is embedded in the intermediate snap-fit ​​groove, the first protruding part of the second special-shaped butterfly-shaped introduction unit is embedded in the intermediate snap-fit ​​groove of the frame bar, and the second protruding part of the second special-shaped butterfly-shaped introduction unit is embedded in another edge snap-fit ​​groove; when the number of intermediate snap-fit ​​grooves on the frame bar is n≥2 and is a positive integer, from one edge snap-fit ​​groove to another edge snap-fit ​​groove of the frame bar, the intermediate snap-fit ​​grooves are respectively referred to as the first intermediate snap-fit ​​groove, the second intermediate snap-fit ​​groove, ..., the n-1th intermediate snap-fit ​​groove, The nth middle snap-fit ​​groove; the first protruding part of the first special-shaped butterfly introduction unit is embedded in an edge snap-fit ​​groove of the frame bar, the second protruding part of the first special-shaped butterfly introduction unit is embedded in the first middle snap-fit ​​groove, the first protruding part of the second special-shaped butterfly introduction unit is embedded in the first middle snap-fit ​​groove of the frame bar, the second protruding part of the second special-shaped butterfly introduction unit is embedded in the second middle snap-fit ​​groove, ..., the first protruding part of the n+1th special-shaped butterfly introduction unit is embedded in the nth middle snap-fit ​​groove of the frame bar, the second protruding part of the n+1th special-shaped butterfly introduction unit is embedded in another edge snap-fit ​​groove of the frame bar; the protruding parts of each middle snap-fit ​​groove are closely attached to each other; The lower edges of all the accommodating bodies are tightly attached to the outer edges of the frame bars, the reinforcing components are located in the extension cavities, and each extension cavity has only one reinforcing component.

3. An optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit, comprising a plurality of first optical fiber ribbons (1), eight special-shaped butterfly-shaped introduction units (2), four reinforcing components (3), a frame component (4), a protective layer (5), and an outer sheath (6), wherein each first optical fiber ribbon is composed of a plurality of optical fibers (11) and an adhesive layer (12), the plurality of optical fibers are arranged in a row and adjacent optical fibers do not contact each other, and in the first optical fiber ribbon, the adhesive layer entirely covers or edge-bonds all the optical fibers; the reinforcing component (3) is composed of a reinforcing member (31) and a cushion layer (32), and the cushion layer covers the reinforcing member; and characterized in that: The special-shaped butterfly introduction unit is composed of a second optical fiber ribbon, two reinforcement pieces (23), and a butterfly-shaped sheath (24). The butterfly-shaped sheath is an integrated structure. The second optical fiber ribbon is composed of a plurality of optical fibers (21) and an adhesive sheath (22). The plurality of optical fibers are arranged in a row and adjacent optical fibers do not contact each other. The second optical fiber ribbon and the adhesive sheath entirely cover or edge-bond all the optical fibers. The butterfly sheath is composed of a first protruding component (241), a container (243), and a second protruding component (242) connected in sequence. The first protruding component is perpendicular to the container, and the second protruding component is perpendicular to the container. The first protruding component and the second protruding component are located on the same side of the container. The two reinforcement pieces are respectively located in the first protruding component and the second protruding component. The second optical fiber ribbon is located in the container. The edge of the container above the second optical fiber ribbon is called the upper edge of the container, and the edge of the container below the second optical fiber ribbon is called the lower edge of the container. The frame component is composed of four frame bars (41) and four extension bars (42). The frame component is an integrated structure. The four frame bars are connected end to end in sequence to form a frame body. The cross section of the frame body is approximately square, so the frame body is approximately a regular quadrangular prism. The frame body has a hollow central cavity (410). The extension bars are small regular quadrangular prism structures. The extension bars have an extension cavity (420) that runs through the axial direction. The four extension bars extend outward from four edges of the frame body and are combined with corresponding edges of the frame body. The outer edge of the frame bar has an edge snap-fit ​​groove (411) and a middle snap-fit ​​groove (412) that are recessed in the direction of the central cavity. The edge snap-fit ​​groove is located at both ends of the frame bar, and the middle snap-fit ​​groove is located between the two ends of the frame bar. Two special-shaped butterfly-shaped introduction units are embedded in each frame bar, the first protruding part of the first special-shaped butterfly-shaped introduction unit is embedded in the first edge snap-fit ​​groove of the frame bar, the second protruding part of the first special-shaped butterfly-shaped introduction unit is embedded in the middle snap-fit ​​groove of the frame bar, the first protruding part of the second special-shaped butterfly-shaped introduction unit is embedded in the middle snap-fit ​​groove of the frame bar and is tightly attached to the second protruding part of the first special-shaped butterfly-shaped introduction unit, and the second protruding part of the second special-shaped butterfly-shaped introduction unit is embedded in the second edge snap-fit ​​groove of the frame bar. In the assembled state, the lower edges of all the accommodating bodies are tightly attached to the outer edges of the frame bar, and the outer edges of all the accommodating bodies and the two side surfaces of each cushion layer (32) are on the same regular quadrangular prism to form a cable core; The reinforcement component is located in the extension cavity (420), each extension cavity has only one reinforcement component, all first optical fiber ribbons (1) are distributed in the central cavity (410) in a stacked manner, the protective layer is coated on the outside of the cable core, and the outer sheath is coated on the outside of the protective layer.

4. The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit according to claim 3, characterized in that: Only four special-shaped butterfly-shaped introduction units (2) are provided, no intermediate engaging groove is provided, and only one special-shaped butterfly-shaped introduction unit (2) is engaged with each frame bar (41).

5. The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit according to claim 3 or 4, characterized in that: The material of the adhesive layer (12) is plastic.

6. The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit according to claim 5, characterized in that: The material of the bonding protective layer (22) is plastic.

7. The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit according to claim 6, characterized in that: The material of the reinforcement (23) is steel wire, aluminum wire, iron wire, copper wire, copper alloy wire, aluminum alloy wire, glass fiber reinforced plastic, aramid yarn, polyester yarn or glass fiber yarn.

8. The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit according to claim 7, characterized in that: The butterfly-shaped protective cover (24) is an integrated structure and is made of plastic.

9. The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit according to claim 8, characterized in that: The material of the first protruding part (241) is plastic; the material of the second protruding part (242) is plastic.

10. The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit according to claim 9, characterized in that: The material of the accommodating body (243) is plastic.

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