Butterfly-shaped optical cable traction connector

Abstract

The utility model provides a butterfly-shaped optical cable traction connector, and relates to the technical field of optical communication. The optical cable tractor comprises a tractor body, a structure body, an optical cable, an inner frame sleeve and an outer frame sleeve, the tractor body is detachably connected with the structure body and detachably connected with external traction equipment, the end of the optical cable is connected with the structure body, and after connection between the tractor body and the structure body is removed, the inner frame sleeve can be detachably connected with the structure body. The outer frame sleeve is detachably connected to the outer side of the inner frame sleeve. After wiring construction operation is completed, the tractor body can be detached from the structure body, then the inner frame sleeve is assembled on the structure body, and then the outer frame sleeve is assembled on the inner frame sleeve. By arranging the tractor body, friction resistance can be reduced in the pipeline construction traction process, pipeline wiring in a narrow space is facilitated, the overall structure is simpler and smaller, installation is rapid and convenient, construction time is saved, and personnel investment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of optical communications, in particular to a butterfly-shaped optical cable pulling connector. Background Art

[0002] Fiber optic connectors are non-permanent fixed connections between devices, devices and optical fibers, optical cables and optical modules, and optical fibers in a system. By precisely docking the two optical fiber end faces that need to be connected, the light energy output by the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent. They are indispensable components for connecting various devices in communication systems and are also the most widely used fiber optic components. Therefore, the research on fiber optic connectors has received widespread attention from the engineering and academic communities.

[0003] The applicant has discovered that there are at least the following technical problems in the prior art: with the development of the construction industry and the improvement of people's requirements for indoor facilities, indoor piping systems have become increasingly complex. When installing, repairing or rewiring pipelines, an efficient and reliable traction connector is needed to ensure the smooth progress of construction. Especially in some indoor environments with limited space and harsh construction conditions, such as narrow pipe wells or densely arranged pipeline areas, traditional connectors lack traction structures. In addition, modern buildings have constantly changing requirements for the layout and function of pipelines, and the appearance, structure, length and other characteristics of traditional connectors cannot meet the needs. In addition, the construction efficiency of traditional connectors is low, and they cannot quickly and accurately complete the traction and connection of pipelines, which easily leads to increased construction time and a large amount of manpower investment. Utility Model Content

[0004] The purpose of the present invention is to provide a butterfly-shaped optical cable pulling connector to solve the technical problems existing in the prior art. The various technical effects that can be produced by the preferred technical solution among the various technical solutions provided by the present invention are described in detail below.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A butterfly-shaped optical cable traction connector comprises a tractor body, a structural body, an optical cable, an inner frame sleeve and an outer frame sleeve. The tractor body is detachably connected to the structural body and to an external traction device. The end of the optical cable is connected to the structural body. After the connection between the tractor body and the structural body is released, the inner frame sleeve can be detachably connected to the structural body, and the outer frame sleeve is detachably connected to the outside of the inner frame sleeve.

[0007] Preferably, the traction device body includes a traction sleeve, a mounting hole is provided at the front end of the traction sleeve, the external traction device is detachably connected to the mounting hole, a rolling guide wheel is embedded in the traction sleeve, and the rolling guide wheel can rotate relative to the traction sleeve, the traction sleeve is arranged on the outside of the front end of the structural body and the end of the traction sleeve away from the mounting hole is detachably connected to the structural body.

[0008] Preferably, the structural main body includes a dust cap, a ferrule, a fixed tail handle, a spring, a stop seat, a retaining spring and a tail sleeve, the dust cap is sleeved on the outside of the ferrule, the ferrule is connected to the fixed tail handle, the stop seat is sleeved on the outside of the fixed tail handle, the spring is sleeved on the outside of the fixed tail handle and its two ends are respectively abutted against the fixed tail handle and the stop seat, one side of the retaining spring is abutted against the stop seat and the other side is abutted against the first barb structure located at the tail of the fixed tail handle, the tail sleeve is connected to the stop seat, the outer side of the stop seat is provided with an external thread, the end of the traction sleeve away from the mounting hole is provided with an internal thread, the internal thread can be threadedly connected with the external thread, and the end of the optical cable is connected to the ferrule and the fixed tail handle.

[0009] Preferably, the fixed tail handle includes a special-shaped protrusion at the front end and a pillar at the tail end, the side surface of the special-shaped protrusion is alternately provided with a first plane and a first arc surface, and the first barb structure is provided at the tail end of the pillar.

[0010] Preferably, the dust cap abuts against the front end surface of the special-shaped protrusion, and the outer diameter of the dust cap is smaller than the outer diameter of the special-shaped protrusion.

[0011] Preferably, the fixed tail handle passes through the cavity of the stop seat, a stepped through hole is provided inside the stop seat, one end of the spring is in contact with the stepped through hole, a stop seat protrusion is provided on the outer wall of the stop seat, the inner frame sleeve can be snap-fitted with the stop seat protrusion, and a second barb structure is provided at the tail of the stop seat, and one side of the retaining spring can be in contact with the second barb structure.

[0012] Preferably, the inner side of the clamping spring has a third arc surface and is clamped on the pillar through the third arc surface.

[0013] Preferably, a groove is provided inside the front end of the tail shield, and the groove is butted against the second barb structure.

[0014] Preferably, a card slot matching the special-shaped protrusion is provided inside the cavity of the inner frame sleeve, and a transverse hinge is symmetrically provided at the tail end of the inner frame sleeve, each of the transverse hinges is movably connected to a square window, and the two square windows can rotate relative to each other to form an open state and a locked state, and can be snap-fitted with the stop seat protrusion when in the locked state, and a first visual mark is provided on the outer side surface of the inner frame sleeve.

[0015] Preferably, a second visual mark is provided on the outer side surface of the outer frame sleeve, an avoidance groove is provided inside the cavity of the outer frame sleeve, and the outer frame sleeve is arranged on the outer side of the inner frame sleeve and is snap-fitted with the inner frame sleeve through the avoidance groove.

[0016] The beneficial effects of the present invention are as follows: under the drive of the external traction device, the tractor body can drive the structural body and the optical cable to perform wiring construction. Since the tractor body and the structural body are connected in a detachable manner, after the wiring construction operation is completed, the tractor body can be removed from the structural body, and then the inner frame sleeve can be assembled on the structural body, and then the outer frame sleeve can be assembled on the inner frame sleeve;

[0017] The butterfly-shaped optical cable traction connector is equipped with a traction device body, which can reduce friction resistance during pipeline construction and traction, making it easier to lay pipelines in narrow spaces. The overall structure is simpler and more compact, and installation is quick and convenient. The external dimensions are consistent with existing conventional SC connectors, and it has high applicability and versatility. The butterfly-shaped optical cable traction connector can quickly and accurately complete the traction and connection of pipelines, and quickly complete the docking of connectors with equipment or routers, saving construction time and reducing manpower input. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is the exploded structure diagram of the utility model;

[0020] Figure 2 This is a structural diagram of the tractor body of the present utility model;

[0021] Figure 3 This is a structural diagram of the ferrule and fixed tail handle of the utility model;

[0022] Figure 4 This is a structural diagram of the special-shaped protrusion of the present utility model;

[0023] Figure 5 This is a structural diagram of the stopper of the utility model;

[0024] Figure 6 This is a structural diagram of the retaining spring of the present utility model;

[0025] Figure 7 This is a structural diagram of the tractor body of the present utility model;

[0026] Figure 8 This is a structural diagram of the tail sheath of the present utility model;

[0027] Figure 9 This is a structural diagram of the butterfly optical cable of the present invention;

[0028] Figure 10 This is a structural diagram of the inner frame sleeve of the present utility model;

[0029] Figure 11 This is a structural diagram of the square window of the inner frame of the utility model in an open state;

[0030] Figure 12 This is a structural diagram of the card slot of the present utility model;

[0031] Figure 13 This is a structural diagram of the outer frame sleeve of the utility model;

[0032] Figure 14 This is a structural diagram of the tractor body and the structural body of the present utility model when connected;

[0033] Figure 15 It is a structural diagram of the main structure of the utility model;

[0034] Figure 16 This is a structural diagram of the utility model when the inner frame sleeve is not connected to the structural main body;

[0035] Figure 17 This is a structural diagram of the utility model when the inner frame sleeve is connected to the structural main body;

[0036] Figure 18 This is a structural diagram of the outer frame sleeve and the inner frame sleeve of the utility model when they are connected;

[0037] In the figure, 1 is the tractor body; 101 is the mounting hole; 102 is the rolling guide wheel; 103 is the traction sleeve; 104 is the internal thread;

[0038] 2. Dust cap;

[0039] 3. Insert;

[0040] 4. Fixed tail handle; 401. Special-shaped protrusion; 402. First plane; 403. First arc surface; 404. First barb structure; 405. Tail end surface; 406. Support; 407. Front end surface;

[0041] 5. Spring;

[0042] 6. Stop seat; 601. Step through hole; 602. Stop seat protrusion; 603. External thread; 604. Second barb structure;

[0043] 7. Circlip; 701. First end surface of circlip; 702. Second end surface of circlip; 703. Third arc surface; 704. Slot;

[0044] 8. Tail sheath; 801. Groove;

[0045] 9. Optical cable; 901. Coated optical fiber; 902. Strength member; 903. Outer sheath; 904. Buffer coating;

[0046] 10. Inner frame; 1001. First visual marker; 1002. Card slot; 1003. Second flat surface; 1004. Second curved surface; 1005. Square window; 1006. Horizontal hinge;

[0047] 11. Outer frame; 1101. Second visual identification. DETAILED DESCRIPTION

[0048] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be understood that the terms "center", "lateral", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model depending on the specific circumstances.

[0051] Reference Figures 1 to 18 The utility model provides a butterfly-shaped optical cable traction connector, including a tractor body 1, a structural body, an optical cable 9, an inner frame sleeve 10 and an outer frame sleeve 11. The tractor body 1 is detachably connected to the structural body and detachably connected to an external traction device. The end of the optical cable 9 is connected to the structural body. After the connection between the tractor body 1 and the structural body is released, the inner frame sleeve 10 can be detachably connected to the structural body, and the outer frame sleeve 11 can be detachably connected to the outside of the inner frame sleeve 10.

[0052] When the butterfly-shaped optical cable traction connector leaves the factory, the tractor body 1 is connected to the structural body. Driven by an external traction device, the tractor body 1 can drive the structural body and the optical cable 9 to perform wiring construction. Since the tractor body 1 and the structural body are connected in a detachable manner, after the wiring construction operation is completed, the tractor body 1 can be removed from the structural body, and then the inner frame sleeve 10 can be assembled on the structural body, and then the outer frame sleeve 11 can be assembled on the inner frame sleeve 10;

[0053] The butterfly-shaped optical cable traction connector is equipped with a traction device body 1, which can reduce friction resistance during pipeline construction and traction, making it easier to lay pipelines in narrow spaces. The overall structure is simpler and more compact, and the installation is quick and convenient. The external dimensions are consistent with the existing conventional SC connector, and it has high applicability and strong versatility. The butterfly-shaped optical cable traction connector can quickly and accurately complete the traction and connection of pipelines, and quickly complete the docking of connectors with equipment or routers, saving construction time and reducing manpower input.

[0054] As an optional embodiment, the tractor body 1 includes a traction sleeve 103. The traction sleeve 103 is preferably in the shape of a bullet head and has a smooth surface, which helps to reduce friction resistance.

[0055] The front end of the traction sleeve 103 is provided with a mounting hole 101, which is convenient for temporary fixing of an external traction device. The external traction device can be detachably connected to the mounting hole 101, thereby driving the butterfly-shaped optical cable traction connector and the optical cable 9 to move as a whole;

[0056] The traction sleeve 103 is embedded with a rolling guide wheel 102. During the wiring process, the rolling guide wheel 102 can contact the external structure and rotate relative to the traction sleeve 103, thereby effectively reducing the friction resistance of the traction connector during the pipe wiring process, facilitating the construction of pipelines in narrow spaces.

[0057] The traction sleeve 103 is sleeved on the outside of the front end of the structural body to wrap the core 3, and the end of the traction sleeve 103 away from the mounting hole 101 is detachably connected to the structural body, specifically, it is threadedly connected to the stop seat 6. Through close cooperation with the stop seat 6, the core 3 can be protected during the pipe threading process to prevent the core 3 from being damaged.

[0058] As an optional embodiment, the structural body includes a dust cap 2, a ferrule 3, a fixed tail handle 4, a spring 5, a stop seat 6, a retaining spring 7 and a tail sheath 8;

[0059] The dust cap 2 is sleeved on the outside of the ferrule 3. The dust cap 2 can protect the end face of the ferrule. By providing the dust cap 2, after the wiring construction is completed, whether in the process of disassembling the tractor body 1 or in the process of assembling the inner frame sleeve 10 and the outer frame sleeve 11, the dust cap 2 does not need to be removed, thereby avoiding the ferrule end face from being dirty or damaged during the disassembly and assembly process.

[0060] The ferrule 3 is connected to the fixed tail handle 4. The ferrule 3 preferably adopts the same external universal structure as the industry standard ferrule. The fixed tail handle 4 is sleeved on the ferrule 3 and forms an integrated fastening structure with the ferrule 3.

[0061] The spring 5 is sleeved on the outside of the fixed tail handle 4, with one end of the spring 5 abutting against the tail end surface 405 of the fixed tail handle 4, and the other end of the spring 5 abutting against the stepped through hole 601 of the stop seat 6;

[0062] One side of the retaining spring 7 is a first end face 701 of the retaining spring, and the other side is a second end face 702 of the retaining spring. The first end face 701 of the retaining spring abuts against the second barb structure 604 of the stop seat 6, and the other side of the second end face 702 of the retaining spring abuts against the first barb structure 404 located at the tail end of the fixed tail handle 4. The retaining spring 7 can prevent the ferrule 3 from pushing off the dust cap 2 in the opposite direction during the removal of the inner frame sleeve 10, thereby avoiding defects in the end face of the ferrule 3.

[0063] The tail sheath 8 is connected to the stop seat 6;

[0064] The stopper 6 is sleeved on the outside of the fixed tail handle 4. The outer side of the stopper 6 is provided with an external thread 603. The end of the traction sleeve 103 away from the mounting hole 101 is provided with an internal thread 104. The internal thread 104 can form a threaded connection with the external thread 603, so that the tractor body 1 can form a tight threaded connection with the stopper 6. The diameters of the traction sleeve 103 and the stopper 6 at the connection position are preferably the same, which can further reduce the overall dimensions of the traction connector. At the same time, the length of the stopper 6 can be half the length of the existing standard stopper, further shortening the overall length of the traction connector.

[0065] The end of the optical cable 9 is connected to the ferrule 3 and the fixed tail handle 4.

[0066] In this embodiment, the optical cable 9 is mainly a butterfly-shaped optical cable, but is not limited to the butterfly-shaped optical cable. When the optical cable is a round optical cable, it can still be applied;

[0067] The structure of the optical cable 9 includes a coated optical fiber 901, a buffer coating 904, a strength member 902 and an outer sheath 903. The buffer coating 904 is preferably 0.9 mm in size.

[0068] Specifically, during the connection, the trimmed-size optical cable 9 is inserted into the inner hole of the fixed tail handle 4, and the cross section of the outer sheath 903 abuts against the step of the inner hole of the fixed tail handle 4. The ferrule 3 and the optical cable 9 are connected into an integrated structure using glue. After the traction connector and the optical cable 9 are assembled, the tensile strength can reach more than 200N.

[0069] As an optional embodiment, the fixed tail handle 4 includes a special-shaped protrusion 401 located at the front end and a pillar 406 located at the tail end. The side of the special-shaped protrusion 401 is alternately provided with a first plane 402 and a first arc surface 403. The special-shaped protrusion 401 has a front end face 407 and a tail end face 405. The first barb structure 404 is provided at the tail end of the pillar 406.

[0070] As an optional implementation, the dust cap 2 abuts against the front end face 407 of the special-shaped protrusion 401, and the outer diameter of the dust cap 2 is smaller than the outer diameter of the special-shaped protrusion 401. By providing the dust cap 2, after the wiring construction is completed, whether in the process of disassembling the tractor body 1 or in the process of assembling the inner frame sleeve 10 and the outer frame sleeve 11, the dust cap 2 does not need to be removed, thereby avoiding the undesirable phenomenon of dirt or damage on the end face of the core during the disassembly and assembly process.

[0071] As an optional implementation, the fixed tail handle 4 passes through the cavity of the stop seat 6, a stepped through hole 601 is provided inside the stop seat 6, one end of the spring 5 is in contact with the stepped through hole 601, a stop seat protrusion 602 is provided on the outer wall of the stop seat 6, the inner frame sleeve 10 can be snap-fitted with the stop seat protrusion 602, and a second barb structure 604 is provided at the tail of the stop seat 6, and one side of the retaining spring 7 can be in contact with the second barb structure 604.

[0072] As an optional embodiment, the inner side of the retaining spring 7 has a third arc surface 703, and is clamped to the pillar 406 through the third arc surface 703. A groove 704 is provided on the third arc surface 703 of the retaining spring 7, which further facilitates the clamping assembly of the retaining spring 7.

[0073] As an optional embodiment, a groove 801 is provided inside the front end of the tail sheath 8, and the groove 801 is docked with the second barb structure 604. The fixing method here makes the tail sheath 8 have a shorter setting length, which can reach half of the existing standard tail sheath length, further shortening the overall length of the traction connector.

[0074] As an optional embodiment, a slot 1002 is provided inside the cavity of the inner frame sleeve 10 to match the special-shaped protrusion 401. The inner side surface of the slot 1002 has a second flat surface 1003 and a second curved surface 1004 to match the special-shaped protrusion 401. The special-shaped protrusion 401 can only be inserted into the inner frame sleeve 10 when the special-shaped protrusion 401 and the slot 1002 of the inner frame sleeve 10 are in the same direction. If they are in other directions, they cannot be embedded and assembled. Such a configuration can effectively prevent the rotation of the ferrule 3 and prevent on-site workers from assembling incorrectly.

[0075] The rear end of the inner frame sleeve 10 is symmetrically provided with transverse hinges 1006. Each transverse hinge 1006 is movably connected to a square window 1005. The two square windows 1005 can rotate relative to each other to form an open state and a locked state. When in the locked state, they can form a clamping engagement with the stop seat protrusion 602. When in the open state, they can release the clamping engagement with the stop seat protrusion 602. By adding an opening and disassembly design for the hinge, the inner frame sleeve 10 can be repeatedly disassembled and used, reducing production and processing as well as raw material costs.

[0076] The outer side surface of the inner frame sleeve 10 is provided with a first visual mark 1001, which is a direction guidance mark. The addition of the first visual mark 1001 can guide the operator to assemble so that the special-shaped protrusion 401, the slot 1002 and the first visual mark 1001 are assembled together in the same direction.

[0077] As an optional embodiment, a second visual mark 1101 is provided on the outer side of the outer frame sleeve 11. The second visual mark 1101 is a direction guide mark. The addition of the second visual mark 1101 facilitates the guidance of the operator for assembly.

[0078] An escape groove is provided inside the cavity of the outer frame sleeve 11. The outer frame sleeve 11 is sleeved on the outside of the inner frame sleeve 10 and is connected to the inner frame sleeve 10 through the escape groove. The setting of the escape groove facilitates the disassembly and repeated use of the outer frame sleeve 11.

[0079] In this embodiment, the inner frame sleeve 10 and the outer frame sleeve 11 are combined to form an on-site assembly auxiliary material package provided after the construction of the traction connector. The outer dimensions of the inner frame sleeve 10 and the outer frame sleeve 11 are preferably consistent with existing standard loose parts, with high applicability and strong versatility. The difference is that the inner frame sleeve 10 and the outer frame sleeve 11 mentioned in this embodiment are preferably set to a shorter length.

[0080] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A butterfly-shaped optical cable pulling connector, characterized in that: The invention comprises a tractor body (1), a structural body, an optical cable (9), an inner frame sleeve (10) and an outer frame sleeve (11); the tractor body (1) is detachably connected to the structural body and detachably connected to an external traction device; the end of the optical cable (9) is connected to the structural body; after the connection between the tractor body (1) and the structural body is released, the inner frame sleeve (10) can be detachably connected to the structural body, and the outer frame sleeve (11) is detachably connected to the outside of the inner frame sleeve (10).

2. The butterfly-shaped optical cable pulling connector according to claim 1, characterized in that: The tractor body (1) comprises a traction sleeve (103), a mounting hole (101) is provided at the front end of the traction sleeve (103), the external traction device is detachably connected to the mounting hole (101), a rolling guide wheel (102) is embedded in the traction sleeve (103), and the rolling guide wheel (102) can rotate relative to the traction sleeve (103), the traction sleeve (103) is sleeved on the outside of the front end of the structural body, and the end of the traction sleeve (103) away from the mounting hole (101) is detachably connected to the structural body.

3. The butterfly-shaped optical cable pulling connector according to claim 2, characterized in that: The main structure comprises a dust cap (2), an insert (3), a fixed tail handle (4), a spring (5), a stop seat (6), a retaining spring (7) and a tail sleeve (8); the dust cap (2) is sleeved on the outside of the insert (3); the insert (3) is connected to the fixed tail handle (4); the retaining spring (6) is sleeved on the outside of the fixed tail handle (4); the spring (5) is sleeved on the outside of the fixed tail handle (4) and its two ends are respectively in contact with the fixed tail handle (4) and the stop seat (6); one side of the retaining spring (7) is in contact with the The stop seat (6) is in contact with the end thereof and the other side thereof is in contact with the first barb structure (404) located at the tail of the fixed tail handle (4); the tail sheath (8) is connected to the stop seat (6); an outer side of the stop seat (6) is provided with an external thread (603); an end of the traction sleeve (103) away from the mounting hole (101) is provided with an internal thread (104); the internal thread (104) can form a threaded connection with the external thread (603); the end of the optical cable (9) is connected to the ferrule (3) and the fixed tail handle (4).

4. The butterfly-shaped optical cable pulling connector according to claim 3, characterized in that: The fixed tail handle (4) comprises a special-shaped protrusion (401) at the front end and a pillar (406) at the rear end, the side surface of the special-shaped protrusion (401) is alternately provided with a first plane (402) and a first arc surface (403), and the first barb structure (404) is provided at the rear end of the pillar (406).

5. The butterfly-shaped optical cable pulling connector according to claim 4, characterized in that: The dust cap (2) abuts against the front end surface (407) of the special-shaped protrusion (401), and the outer diameter of the dust cap (2) is smaller than the outer diameter of the special-shaped protrusion (401).

6. The butterfly-shaped optical cable pulling connector according to claim 4, characterized in that: The fixed tail handle (4) passes through the cavity of the stop seat (6); a stepped through hole (601) is provided inside the stop seat (6); one end of the spring (5) abuts against the stepped through hole (601); a stop seat protrusion (602) is provided on the outer wall of the stop seat (6); the inner frame sleeve (10) can be snap-fitted with the stop seat protrusion (602); a second barb structure (604) is provided at the tail of the stop seat (6); and one side of the retaining spring (7) can abut against the second barb structure (604).

7. The butterfly-shaped optical cable pulling connector according to claim 4, characterized in that: The inner side of the clamping spring (7) has a third arc surface (703) and is clamped on the pillar (406) via the third arc surface (703).

8. The butterfly-shaped optical cable pulling connector according to claim 6, characterized in that: A groove (801) is provided inside the front end of the tail shield (8), and the groove (801) is connected to the second barb structure (604).

9. The butterfly-shaped optical cable pulling connector according to claim 6, characterized in that: A card slot (1002) matching the special-shaped protrusion (401) is provided inside the mold cavity of the inner frame sleeve (10), and a transverse hinge (1006) is symmetrically provided at the tail end of the inner frame sleeve (10), each of the transverse hinges (1006) is movably connected to a square window (1005), and the two square windows (1005) can rotate relative to each other to form an open state and a locked state, and can be locked with the stop seat protrusion (602) when in the locked state, and a first visual mark (1001) is provided on the outer side surface of the inner frame sleeve (10).

10. The butterfly-shaped optical cable pulling connector according to claim 9, characterized in that: The outer side surface of the outer frame sleeve (11) is provided with a second visual mark (1101), the inner cavity of the outer frame sleeve (11) is provided with an avoidance groove, and the outer frame sleeve (11) is sleeved on the outer side of the inner frame sleeve (10) and is snap-connected with the inner frame sleeve (10) through the avoidance groove.

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