An optical fiber ribbon cable with a special-shaped butterfly introduction unit

Abstract

The present invention belongs to the technical field of optical cable, and discloses an optical fiber ribbon cable with a special-shaped butterfly introduction unit, which has a plurality of first optical fiber ribbons, a plurality of special-shaped butterfly introduction units, four strengthening members, a frame member, and an outer sheath. The special-shaped butterfly introduction units are embedded on the frame bars of the frame member. The special-shaped butterfly introduction units and the frame member form a cable core, and the cross-section of the cable core is rectangular; the strengthening members are located in the extension cavity, and all the first optical fiber ribbons are distributed in a stacked manner in the central cavity, and the outer sheath is coated outside the cable core. The present invention has the following main beneficial technical effects: higher fiber core density, easier to manufacture, more special-shaped butterfly introduction units, more convenient disassembly and assembly, higher space utilization rate, suitable for a variety of optical fiber connectors in the prior art, and stronger compressive and buffering capabilities.

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 It is composed of a butterfly-shaped sheath in a specific shape. The vertical parts on the left and right sides are called protruding components, and the horizontal part in the middle is called the accommodating body. Two reinforcing members are respectively located in the two protruding components, and the second optical fiber ribbon is located in the accommodating body. The frame member is composed of four frame bars and four extension bars. The four frame bars are assembled into a frame body with an approximately rectangular cross-section. There is a hollow central cavity inside the frame body, and there is an extension cavity inside the extension bar. The four extension bars respectively 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. There is an edge engaging groove recessed towards the central cavity on the outer edge of the frame bar, and the edge engaging groove is located at both ends of the frame bar. An irregular butterfly-shaped introducing unit is embedded on each frame bar, and the two protruding components of the irregular butterfly-shaped introducing unit are respectively embedded in the two edge engaging grooves of the frame bar. In the assembled state, the lower edges of all the accommodating bodies are closely attached to the outer edge of the frame bar, and the outer edges of all the accommodating bodies and the cushion layer form a cable core, and the cross-section of the cable core is rectangular. The strengthening member is located in the extension cavity, and there is only one strengthening member in each extension cavity. All the first optical fiber ribbons are distributed in a stacked manner in the central cavity, and the outer sheath is wrapped outside the cable core.

[0006] For the above-mentioned optical fiber ribbon cable with an irregular butterfly-shaped introducing unit, it is characterized in that: there are also n intermediate engaging grooves recessed towards the central cavity on the outer edge of the frame bar, and the intermediate engaging grooves are located between the two ends of the frame bar; in the assembled state, n + 1 irregular butterfly-shaped introducing units are embedded on the frame bar; when the number n of the intermediate engaging grooves on the frame bar is 1, the first protruding component of the first irregular butterfly-shaped introducing unit is embedded in an edge engaging groove of the frame bar, the second protruding component of the first irregular butterfly-shaped introducing unit is embedded in the intermediate engaging groove, the first protruding component of the second irregular butterfly-shaped introducing unit is embedded in the intermediate engaging groove of the frame bar, and the second protruding component of the second irregular butterfly-shaped introducing unit is embedded in the other edge engaging groove; when the number n of the intermediate engaging grooves on the frame bar is ≥ 2 and is a positive integer, the intermediate engaging grooves between one edge engaging groove and the other edge engaging groove of the frame bar are respectively called the first intermediate engaging groove, the second intermediate engaging groove,..., the (n - 1)th intermediate engaging groove, and the nth intermediate engaging groove; the first protruding component of the first irregular butterfly-shaped introducing unit is embedded in an edge engaging groove of the frame bar, the second protruding component of the first irregular butterfly-shaped introducing unit is embedded in the first intermediate engaging groove, the first protruding component of the second irregular butterfly-shaped introducing unit is embedded in the first intermediate engaging groove of the frame bar, the second protruding component of the second irregular butterfly-shaped introducing unit is embedded in the second intermediate engaging groove,..., the first protruding component of the (n + 1)th irregular butterfly-shaped introducing unit is embedded in the nth intermediate engaging groove of the frame bar, and the second protruding component of the (n + 1)th irregular butterfly-shaped introducing unit is embedded in the other edge engaging groove of the frame bar; the protruding components of each intermediate engaging groove are closely attached to each other;

[0007] The lower edges of all the accommodating bodies are in close contact with the outer edges of the frame bars. The strengthening components are located in the extension cavities, and there is only one strengthening component in each extension cavity. All the first optical fiber ribbons are distributed in a stacked manner in the central cavity, and the outer sheath covers the cable core.

[0008] This application has the following main beneficial technical effects: higher core density, easier to manufacture, more butterfly introduction units, more convenient disassembly and assembly, higher space utilization rate, suitable for a variety of optical fiber connectors in the prior art, and stronger compressive and buffering capabilities. Description of the Drawings

[0009] Figure 1 It is a three-dimensional structural schematic diagram of a dissected part for Embodiment 1.

[0010] Figure 2 It is Figure 1 An enlarged cross-sectional structural schematic diagram.

[0011] Figure 3 It is Figure 1 A three-dimensional structural schematic diagram of a dissected part of the special-shaped butterfly introduction unit used in

[0012] Figure 4 It is Figure 3 An enlarged cross-sectional structural schematic diagram.

[0013] Figure 5 It is Figure 1 A three-dimensional structural schematic diagram of a dissected part of the frame component used in

[0014] Figure 6 It is Figure 6 An enlarged cross-sectional structural schematic diagram.

[0015] Figure 7 It is a cross-sectional structural schematic diagram of the frame component of Embodiment 2. Detailed Implementation Manner

[0016] In order to enable those skilled in the art to better understand and implement this patent, the marks in the accompanying drawings will be described in detail in combination with the specification drawings.

[0017] In the figure: 1 - the first optical fiber ribbon, 2 - the special-shaped butterfly lead-in unit, 3 - the strengthening member, 4 - the frame member, 5 - the protective layer, 6 - the outer sheath, 11 - the optical fiber, 12 - the bonding layer, 21 - the optical guiding fiber, 22 - the bonding protective layer, 23 - the reinforcing member, 24 - the butterfly sheath, 241 - the first protruding member, 242 - the second protruding member, 243 - the accommodating body, 31 - the strengthening member, 32 - the cushion layer, 41 - the frame bar, 42 - the extension bar, 410 - the central cavity, 411 - the edge engaging groove, 412 - the intermediate engaging groove, 420 - the extension cavity, L - the distance between the outer edge of the frame bar and the outer edge of the extension bar in the corresponding direction.

[0018] Example 1: See Figures 1 to 6 , an optical fiber ribbon cable with a special-shaped butterfly lead-in unit, having multiple first optical fiber ribbons 1, eight special-shaped butterfly lead-in units 2, four strengthening members 3, a frame member 4, a protective layer 5, and an outer sheath 6. Each first optical fiber ribbon is composed of multiple optical fibers 11 and a bonding layer 12. The multiple optical fibers are arranged in a row and do not contact each other adjacent to each other. In the first optical fiber ribbon, the bonding layer entirely covers or edge-bondingly covers all the optical fibers; the strengthening member 3 is composed of a strengthening member 31 and a cushion layer 32, and the cushion layer covers the strengthening member; it is characterized in that:

[0019] The special-shaped butterfly lead-in unit is composed of a second optical fiber ribbon, two reinforcing members 23, and a butterfly sheath 24. The butterfly sheath is an integral structure. The second optical fiber ribbon is composed of multiple optical guiding fibers 21 and a bonding protective layer 22. The multiple optical guiding fibers are arranged and do not contact each other adjacent to each other. In the second optical fiber ribbon, the bonding protective layer entirely covers or edge-bondingly covers all the optical guiding fibers. The butterfly sheath is composed of a first protruding member 241, an accommodating body 243, and a second protruding member 242 connected in sequence. The first protruding member is perpendicular to the accommodating body, and the second protruding member is perpendicular to the accommodating body. The first protruding member and the second protruding member are located on the same side of the accommodating body. The two reinforcing members are respectively located in the first protruding member and the second protruding member, and the second optical fiber ribbon is located in the accommodating body. Figure 4 In it, the edge of the accommodating body above the second optical fiber ribbon is called the upper edge of the accommodating body, and the edge of the accommodating body below the second optical fiber ribbon is called the lower edge of the accommodating body;

[0020] The frame member is composed of four frame bars 41 and four extension bars 42. The frame member is of an integral structure. The four frame bars are sequentially joined end to end to form a frame body. The cross-section of the frame body is approximately square, so the frame body is an approximately regular quadrangular prism. There is a hollow central cavity 410 inside the frame body. The extension bars are small regular quadrangular prism structures. There is an axially penetrating extension cavity 420 inside the extension bars. 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. On the outer edge of the frame bar, there are an edge engaging groove 411 and an intermediate engaging groove 412 that are recessed toward the central cavity. The edge engaging groove is located at both ends of the frame bar, and the intermediate engaging 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;

[0021] Two special-shaped butterfly introduction units are embedded in each frame bar. The first protruding member of the first special-shaped butterfly introduction unit is embedded in the first edge engaging groove of the frame bar, and the second protruding member of the first special-shaped butterfly introduction unit is embedded in the intermediate engaging groove of the frame bar. The first protruding member of the second special-shaped butterfly introduction unit is embedded in the intermediate engaging groove of the frame bar and is in close contact with the second protruding member of the first special-shaped butterfly introduction unit. The second protruding member of the second special-shaped butterfly introduction unit is embedded in the second edge engaging groove of the frame bar. In the assembled state, the lower edges of all the accommodating bodies are in close contact with the outer edge of the frame bar. 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;

[0022] The strengthening member is located in the extension cavity 420. There is only one strengthening member in each extension cavity. All the first optical fiber ribbons 1 are distributed in a stacked manner in the central cavity 410. The protective layer is coated outside the cable core, and the outer sheath is coated outside the protective layer.

[0023] For the above-mentioned optical fiber ribbon optical cable with special-shaped butterfly introduction units, L is not less than the thickness of the accommodating body 243.

[0024] Of course, further, in this embodiment, it is not limited to the case of eight special-shaped butterfly introduction units 2. It can also be other numbers. For example, more than two special-shaped butterfly introduction units 2 are engaged on each frame bar 41. At this time, there are multiple intermediate engaging grooves on each frame bar 41, and one first protruding member 241 and one second protruding member 242 are engaged in each intermediate engaging groove.

[0025] Furthermore, in the present application, the structure is not limited to a frame body with a cross-section approximately square. It 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. Therefore, the frame body is a quadrangular prism structure with a cross-section approximately rectangular. In this case, the lengths of the special-shaped butterfly introduction units engaged on the frame bodies of different lengths can be the same or different. The different lengths of the special-shaped butterfly introduction units refer to the different lengths of the accommodating body 243, which can be suitable for different sizes. For example, special-shaped butterfly introduction units of different lengths are engaged on the same frame body, or special-shaped butterfly introduction units of different lengths are engaged on different frame bodies. In this way, it is convenient to distinguish, flexibly apply, and more reasonably utilize space resources.

[0026] The lengths of the special-shaped butterfly introduction units, such as the nominal lengths of 5 mm, 4 mm, 3 mm, and 2 mm, can be suitable for different specifications of fiber optic connectors in the prior art, realizing access for different requirements, and avoiding the problem of mismatch with the fiber optic interfaces of the optical devices already purchased by users when there is only one specification for access.

[0027] In this embodiment, the cross-section is referred to as approximately square or non-square rectangular structure because: there are engaging grooves on the frame bars.

[0028] In this embodiment, the protective layer 5 may not be included, and only the outer sheath 6 is provided. The outer sheath 6 directly wraps around the cable core.

[0029] Embodiment 2: Please refer to Figure 7 and refer to Figures 1 to 6 A fiber optic ribbon cable with special-shaped butterfly introduction units is basically the same as Embodiment 1, except that: there are only four special-shaped butterfly introduction units 2, and there is no intermediate engaging groove, that is, only one special-shaped butterfly introduction unit 2 is engaged on each frame bar 41.

[0030] A fiber optic ribbon cable with special-shaped butterfly introduction units described in the present application includes multiple first fiber optic ribbons 1, multiple special-shaped butterfly introduction units 2, four strengthening members 3, a frame member 4, and an outer sheath 6, and is characterized in that:

[0031] The special-shaped butterfly introduction unit is composed of a second fiber optic ribbon, two reinforcing members 23, and a butterfly-shaped sheath 24 with a cross-section in the shape of The vertical parts on the left and right sides are called protruding parts, and the middle horizontal part is called the accommodating body. The two reinforcing members 23 are respectively located in the two protruding parts, and the second fiber optic ribbon is located in the accommodating body;

[0032] The frame member 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. There is a hollow central cavity 410 inside the frame body, and an extension cavity 420 inside the extension bar. 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. There are edge engaging grooves 411 recessed towards the central cavity on the outer edge of the frame bar, and the edge engaging grooves are located at both ends of the frame bar.

[0033] One special-shaped butterfly introduction unit is embedded on each frame bar. The two protruding parts of the special-shaped butterfly introduction unit are respectively embedded in the two edge engaging grooves of the frame bar. In the assembled state, the lower edges of all the accommodating bodies are closely attached to the outer edge of the frame bar. The outer edges of all the accommodating bodies and the cushion layer form a cable core, and the cross-section of the cable core is rectangular. The strengthening member is located in the extension cavity 420, and there is only one strengthening member in each extension cavity. All the first optical fiber ribbons 1 are distributed in the central cavity 410 in a stacked manner, and the outer sheath covers the cable core.

[0034] For the above-mentioned optical fiber ribbon cable with a special-shaped butterfly introduction unit, there are also n intermediate engaging grooves 412 recessed towards the central cavity on the outer edge of the frame bar, and the intermediate engaging grooves are located between the two ends of the frame bar.

[0035] In the assembled state, n + 1 special-shaped butterfly introduction units are embedded on the frame bar. When the number n of the intermediate engaging grooves on the frame bar is 1, the first protruding part of the first special-shaped butterfly introduction unit is embedded in one edge engaging groove of the frame bar, the second protruding part of the first special-shaped butterfly introduction unit is embedded in the intermediate engaging groove, the first protruding part of the second special-shaped butterfly introduction unit is embedded in the intermediate engaging groove of the frame bar, and the second protruding part of the second special-shaped butterfly introduction unit is embedded in the other edge engaging groove.

[0036] When the number n of the intermediate engaging grooves on the frame strip is ≥ 2 and is a positive integer, the intermediate engaging grooves between one edge engaging groove and the other edge engaging groove of the frame strip are respectively called the first intermediate engaging groove, the second intermediate engaging groove,..., the (n - 1)th intermediate engaging groove, and the nth intermediate engaging groove; the first protruding part of the first special-shaped butterfly introducing unit is embedded in one edge engaging groove of the frame strip, the second protruding part of the first special-shaped butterfly introducing unit is embedded in the first intermediate engaging groove, the first protruding part of the second special-shaped butterfly introducing unit is embedded in the first intermediate engaging groove of the frame strip, the second protruding part of the second special-shaped butterfly introducing unit is embedded in the second intermediate engaging groove,..., the first protruding part of the (n + 1)th special-shaped butterfly introducing unit is embedded in the nth intermediate engaging groove of the frame strip, and the second protruding part of the (n + 1)th special-shaped butterfly introducing unit is embedded in the other edge engaging groove of the frame strip; the protruding parts of each intermediate engaging groove are in close contact with each other;

[0037] The lower edges of all the accommodating bodies are in close contact with the outer edge of the frame strip. The strengthening member is located in the extension cavity 420, and there is only one strengthening member in each extension cavity. All the first optical fiber ribbons 1 are distributed in the central cavity 410 in a stacked manner, and the outer sheath is coated outside the cable core.

[0038] A fiber ribbon optical cable with a special-shaped butterfly introducing unit according to the present application is characterized in that the type of the optical fiber 11 is single-mode or multi-mode.

[0039] A fiber ribbon optical cable with a special-shaped butterfly introducing unit according to the present application is characterized in that the material of the bonding layer 12 is plastic.

[0040] A fiber ribbon optical cable with a special-shaped butterfly introducing unit according to the present application is characterized in that the type of the optical fiber 21 is single-mode or multi-mode.

[0041] A fiber ribbon optical cable with a special-shaped butterfly introducing unit according to the present application is characterized in that the material of the bonding protective layer 22 is plastic.

[0042] A fiber ribbon optical cable with a special-shaped butterfly introducing unit according to the present application is characterized in that the material of the reinforcing 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.

[0043] A fiber ribbon optical cable with a special-shaped butterfly introducing unit according to the present application is characterized in that the butterfly sheath 24 is an integral structure and the material is plastic.

[0044] A fiber ribbon optical cable with a special-shaped butterfly introducing unit according to the present application is characterized in that the material of the first protruding part 241 is plastic.

[0045] An optical fiber ribbon cable with a special-shaped butterfly introduction unit according to the present application is characterized in that the material of the second protruding member 242 is plastic.

[0046] An optical fiber ribbon cable with a special-shaped butterfly introduction unit according to the present application is characterized in that the material of the accommodating body 243 is plastic.

[0047] An optical fiber ribbon cable with a special-shaped butterfly introduction unit according to the present application is characterized in that the material of the strengthening member 31 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; when it is copper wire, aluminum wire, copper alloy wire or aluminum alloy wire, it can be used as an element for adding tensile strength and can also be used for transmitting electricity and / or transmitting electrical signals.

[0048] An optical fiber ribbon cable with a special-shaped butterfly introduction unit according to the present application is characterized in that the material of the cushion layer 32 is plastic.

[0049] An optical fiber ribbon cable with a special-shaped butterfly introduction unit according to the present application is characterized in that the material of the frame strip 41 is plastic.

[0050] An optical fiber ribbon cable with a special-shaped butterfly introduction unit according to the present application is characterized in that the material of the extension strip 42 is plastic.

[0051] An optical fiber ribbon cable with a special-shaped butterfly introduction unit according to the present application is characterized in that the frame member 4 is an integral structure and the material is plastic.

[0052] An optical fiber ribbon cable with a special-shaped butterfly introduction unit according to the present application is characterized in that the material of the protective layer 5 is a water-blocking tape, water-blocking yarn, aramid yarn, polyester tape, glass fiber yarn, polyester binding yarn, steel tape, aluminum tape or copper tape, which plays a role in covering the internal components of the cable core and has functional protection functions such as waterproofing and compression resistance. It is not limited to one layer and can be a multi-layer composite structure, that is, a structure of one layer covering another layer, and different layers have different functions.

[0053] An optical fiber ribbon cable with a special-shaped butterfly introduction unit according to the present application is characterized in that the material of the outer sheath 6 is plastic.

[0054] In the present application, the frame member 4 is an integral structure and is formed by extrusion molding once on an extruder for sheaths, and the speed can reach more than 250 meters per minute. During the molding process, other components are inserted or / and embedded, and the possible protective layer 5 and outer sheath 6 are covered on the outside; 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.

[0055] The fiber ribbon optical cable in this application has a high space utilization rate. Compared with the structures in the prior art, due to the structural improvement of the special-shaped butterfly introduction unit, on the one hand, its length and overall width can fit the fiber optic connectors in the prior art, and it can be used in a matching manner without designing additional fiber optic connectors; on the other hand, it can be snapped onto the frame component, and the two are combined into one body, which is easy to disassemble and assemble, effectively utilizes space, and does not cause waste of space. Moreover, special-shaped butterfly introduction units of the same and / or different sizes can be snapped, so it is very flexible to use. In addition, when the cross-section of the frame component 4 is rectangular, different numbers of special-shaped butterfly introduction units are snapped on the length and width. Furthermore, after snapping, preferably, the special-shaped butterfly 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, under external pressure, it can first press on the extension strip 42, which plays a role in improving the compressive resistance and buffering impact of the special-shaped butterfly introduction unit, the first fiber ribbon, etc.; in this application, the central cavity 410 can have a square cross-section or a rectangular cross-section, increasing the capacity, allowing more first fiber ribbons to be placed and increasing the number of optical fibers in the first fiber ribbon, so the core density of the optical cable is greatly improved.

[0056] This application is very suitable for laying in rectangular pipes and rectangular or rectangular open slots, with a fast construction speed and a high space utilization rate.

[0057] This application has the following main beneficial technical effects: higher core density, easier to manufacture, more special-shaped butterfly introduction units, more convenient disassembly and assembly, higher space utilization rate, suitable for various fiber optic connectors in the prior art, and stronger compressive and buffering capabilities.

[0058] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should 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, the intermediate snap-fit ​​grooves between one edge snap-fit ​​groove and another edge snap-fit ​​groove of the frame bar 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. The optical fiber ribbon cable with a special-shaped butterfly introduction unit according to claim 2, characterized in that: The numbers of the special-shaped butterfly introduction units and the middle engaging grooves are 8 and 1 respectively.

4. The optical fiber ribbon cable with a special-shaped butterfly-shaped introduction unit according to claim 2, characterized in that: The numbers of the special-shaped butterfly-shaped introduction units and the middle engaging grooves are 4 and 0 respectively, and only one special-shaped butterfly-shaped introduction unit (2) is engaged on 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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