An optical fiber connector

Abstract

The utility model discloses a kind of optical fiber connectors, belong to optical fiber connector related technical field, including pipe penetrating portion and unthreadable pipe portion, the combination of ferrule assembly, ferrule main body and the combination of traction cap in pipe penetrating portion and the combination between support body and connector main body in unthreadable pipe portion are set, so that the optical transmission part of optical fiber connector can be in construction with optical cable together Pipe laying, and after completing laying, it realizes the quick assembly with the large size shell of connector, satisfies the butt joint conduction demand of optical fiber connector and large size adapter. Optical fiber connector in the utility model, it adopts assembled structure, can be disassembled and transported, small and exquisite, both can satisfy the pipe laying demand in miniature pipeline, and can satisfy the plug-in conduction demand of large size adapter after laying, to expand the application range of optical fiber connector, reduce pipeline resources when optical cable pipeline laying, save the cost of optical cable laying, with excellent practical value.

Description

Technical Field

[0001] This utility model belongs to the technical field of fiber optic connectors, and specifically relates to a fiber optic connector. Background Technology

[0002] In the application of fiber optic connectors, Optitap connectors and SC connectors are two widely used types. Optitap connectors are typically large, with an outer diameter of around 20mm, making them unsuitable for installation in micro-ducts (approximately 10mm in diameter). Meanwhile, SC connectors are relatively small, especially the MiniSC connector, whose ferrule can be combined with micro-cables to meet the requirements for installation in micro-ducts.

[0003] In certain specific application scenarios, there is a need for fiber optic connectors to be laid in conduits and connected to Optitap adapters. In such cases, existing fiber optic connectors cannot meet the needs of practical applications and have certain limitations. Utility Model Content

[0004] In response to one or more of the above-mentioned defects or improvement needs of the existing technology, this utility model provides an optical fiber connector that can meet the requirements of pipe laying in micro-ducts and also meet the connection and adaptation of optical cables after they are laid in pipes with large-size adapters. It has strong compatibility and high practical value.

[0005] To achieve the above objectives, this utility model provides an optical fiber connector, including a tube-through portion and a non-tube-through portion; The conduit-laying section can be installed in a conduit after the optical cable is connected. It includes a ferrule assembly, a ferrule body, and a traction cap. The ferrule assembly is used to connect with the optical fiber in the optical cable and can be assembled with the ferrule body after the optical fiber is connected. The traction cap can be sleeved on one end of the ferrule body to protect the ferrule assembly during conduit installation. The non-tube-penetrating portion can be assembled with the tube-penetrating portion after the traction cap has been removed, for connection to the corresponding adapter and to complete optical transmission conduction; and The non-penetrating portion includes a connector body and a support body; the support body has an inner cavity and an axial locking member, the penetrating portion after removing the traction cap can be coaxially embedded into the inner cavity, and the ferrule body can be axially locked by the axial locking member; the middle part of the connector body has an assembly cavity, one end of which is used for plugging and fitting with an adapter, and the support body can be embedded and fixed in the assembly cavity from the other end of the connector body.

[0006] As a further improvement of this utility model, the tube portion is the inner core assembly of the MiniSC connector, and the adapter that is plugged into the connector body is an Optitap adapter.

[0007] As a further improvement of this utility model, the non-penetrable part also includes a tail sleeve and a sealing element; The tail sleeve can be fitted around the outer periphery of the optical cable and connected to the tail end of the connector body. The sealing element has a sealing hole in the middle for the optical cable to pass through; the cross-section of the sealing hole matches the cross-section of the optical cable, and one end of the sealing element can be limited and embedded in the tail end of the support body, while the other end can be axially pressed and limited by the tail sleeve.

[0008] As a further improvement of this utility model, the tail sleeve is used to connect to the inner cavity of one end of the connector body, which forms an annular abutment surface, and a gasket is provided between the seal and the tail sleeve; the gasket can be sleeved on the outer periphery of the optical cable, one end of which is coaxially embedded in the inner cavity of the tail end of the connector body and abuts against the end face of the seal, and the other end of which abuts against the annular abutment surface in the tail sleeve. and / or A limiting step is formed in the inner cavity of the tail end of the support body for connecting the seal, so that one end of the seal can be axially pressed against the limiting step after being embedded in the tail end of the support body.

[0009] As a further improvement of this utility model, an annular limiting protrusion is provided on the outer periphery of the middle part of the connector body, and the non-tube-penetrating part also includes a dust cap and a nut sleeve. The nut sleeve can be fitted onto the tail end of the connector body and abut against the annular limiting protrusion at its end; the dust cap can be covered on the outer periphery of the connector body for insertion and threadedly connected to the end of the nut sleeve after passing the annular limiting protrusion.

[0010] As a further improvement of this utility model, a sealing groove is provided circumferentially on the outer periphery of the connector body away from the end of the nut sleeve, and a sealing ring is embedded in the sealing groove, so that when the dust cap is connected to the nut sleeve, the sealing ring can press against the inner wall of the dust cap in the circumferential direction.

[0011] As a further improvement of this utility model, the ferrule assembly includes a ferrule, a ferrule tail shank, a ferrule tail seat, and a spring; The insert is connected to the head end of the insert tail shank, and the tail end of the insert tail shank can be connected to the insert tail seat after passing through the inner hole of the insert body; the inner hole of the insert body is a variable diameter hole and forms an annular step; the spring is sleeved on the outer circumference of the insert tail shank and is axially limited by the annular step.

[0012] As a further improvement of this utility model, at least one guide notch is provided in the circumferential direction at the front end of the ferrule; or, at least one guide notch is provided in the circumferential direction at the front end of the ferrule body. Accordingly, a guide key is provided in the inner cavity of the support body, which can be axially embedded in the guide notch when the tube portion of the traction cap is removed and embedded in the inner cavity of the support body.

[0013] As a further improvement of this utility model, the axial locking member is a pair of buckles arranged on the support body, and a backstop step is formed on the outer periphery of the tail end of the insert body, so that the two buckles can abut against the backstop step at their ends when the insert body is embedded in the inner cavity of the support body. and / or The outer contour of the front end of the support body is designed to prevent mistake-proofing, and a mistake-proofing assembly hole is provided in the inner cavity of the connector body, so that when the support body is embedded in the connector body, the front end of the support body is aligned and embedded in the mistake-proofing assembly hole.

[0014] As a further improvement of this utility model, a guide anti-rotation component is provided on the outer periphery of the support body, and the guide anti-rotation component extends along the axial direction of the support body; correspondingly, a guide anti-rotation groove is provided on the inner wall of the assembly cavity of the connector body along the axial direction, so that when the support body is embedded in the connector body, the guide anti-rotation component can be embedded in the guide anti-rotation groove to achieve guidance and anti-rotation. and / or The tail end of the support body has an axial notch from the end to the middle, and a circumferential notch is formed from the end of the axial notch located in the middle of the support body. The length of the circumferential notch is not greater than half of the circumference of the support body where the circumferential notch is formed. Based on the opening of the axial notch and the circumferential notch, a lateral flipping member is formed at the tail end of the support body.

[0015] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0016] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include: The fiber optic connector of this utility model includes a conduit section and a non-conduit section. By utilizing the combination of the ferrule assembly, ferrule body and pull cap in the conduit section and the combination of the support body and the connector body in the non-conduit section, the optical transmission part of the fiber optic connector can be laid in a conduit along with the optical cable during construction. After the laying is completed, it can be quickly assembled with the large-size connector housing, meeting the docking and conduction requirements of the fiber optic connector and the large-size adapter.

[0017] The fiber optic connector in this invention is particularly suitable for use in combination with small MiniSC connectors and large Optitap connectors. By designing a conversion housing (including connector body, support body, tail sleeve, etc.) that is adapted to the insertion size of the Optitap adapter for the inner core components of the MiniSC connector, the compatibility between the MiniSC connector and the Optitap adapter can be quickly achieved.

[0018] The fiber optic connector of this invention adopts an assembly structure, which can be disassembled and transported. It is compact in size and can meet the requirements of laying in micro-ducts, as well as the requirements of plugging and conducting with large-size adapters (compared to the adapters of MiniSC connectors) after laying in ducts. This expands the application range of fiber optic connectors, reduces the duct resources required for laying optical cables, saves the cost of laying optical cables, and has excellent practical value. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is an exploded view of the overall structure of the fiber optic connector in this embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the optical fiber connector and optical cable after assembly in an embodiment of this utility model; Figure 3 This is a cross-sectional view of the fiber optic connector and optical cable assembled in an embodiment of this utility model; Figures 4-6 This is a schematic diagram of the tube-through portion of the fiber optic connector in an embodiment of this utility model; Figure 7 This is a structural disassembly diagram of the non-tube-penetrating portion of the fiber optic connector in an embodiment of this utility model; Figure 8 This is a schematic diagram of the main structure of the non-tube-penetrating part in an embodiment of this utility model; Figures 9-10 An axial cross-sectional view of the main body in the orthogonal direction in an embodiment of this utility model; Figures 11-12 This is a schematic diagram of the support structure in the non-tube-penetrating part of this utility model embodiment; Figures 13-14 Axial cross-sectional view of the support body in the orthogonal direction in the embodiment of this utility model; Figure 15 A schematic diagram of the sealing structure for the non-tube-penetrating portion in this embodiment of the present invention; Figure 16 A schematic diagram of the gasket structure for the non-tube-penetrating portion in this embodiment of the present invention; Figure 17 A schematic diagram of the tail sleeve structure of the non-tube-penetrating part in this embodiment of the present invention; In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 100. Sections that can be installed in conduits; 200. Sections that cannot be installed in conduits; 300. Optical fiber cable; 1. Insert assembly; 101. Insert; 102. Insert tailstock; 103. Insert tail seat; 104. Spring; 105. Guide notch; 2. Insert body; 201. Anti-reverse step; 202. Connecting thread; 203. Annular step; 3. Traction cap; 4. Dust cap; 5. Sealing ring; 6. Connector body; 601. Sealing groove; 602. Threaded connection end; 603. Limiting groove; 604. Guide anti-rotation groove; 605. Anti-foolproof assembly hole; 7. Nut sleeve; 8. Support body; 801. Buckle; 802. Lateral flipping component; 803. Guide anti-rotation component; 804. Limiting step; 805. Guide key; 9. Sealing component; 901. Sealing hole; 10. Gasket; 11. Tail sleeve. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] In the description of this utility model, it should be understood that, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, unless otherwise expressly defined, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] Below, for reference Figures 1-17 Describes an optical fiber connector according to a preferred embodiment of the present invention.

[0027] like Figure 1 As shown, the fiber optic connector in the preferred embodiment of this utility model includes a tube-through portion 100 and a non-tube-through portion 200.

[0028] The conduit section 100, which can be laid in a conduit after connecting the optical cable 300, includes a ferrule assembly 1, a ferrule body 2, and a traction cap 3. Specifically, the ferrule assembly 1 is assembled and connected to the ferrule body 2, and after assembly, it is connected to the optical fiber in the optical cable 300, completing the setting of the inner core assembly in the connector. At the same time, the traction cap 3 can be sleeved on one end of the ferrule body 2 (equipped with ferrule 101) to protect the ferrule assembly 1 during conduit laying.

[0029] For the pipe-through portion 100 in the preferred embodiment, its maximum outer diameter (generally at the traction cap 3) is less than 10 mm, which can meet the requirements for pipe-through laying in existing micro-pipes.

[0030] Furthermore, the non-tube-penetrating portion 200 can be assembled with the tube-penetrating portion 100 after removing the traction cap 3, for insertion into the corresponding adapter and completion of optical transmission conduction. Specifically, the non-tube-penetrating portion 200 includes a connector body 6 and a support body 8; wherein, the support body 8 has an inner cavity and an axial locking member, the tube-penetrating portion 100 after removing the traction cap 3 can be coaxially embedded into the inner cavity, and the ferrule body 2 can be axially locked by the axial locking member. At the same time, the connector body 6 has an assembly cavity in the middle, one end of which is used for insertion and adaptation with the adapter, and the support body 8 can be inserted into and fixed in the assembly cavity from the other end of the connector body 6.

[0031] Based on the combination of the conduit portion 100 and the non-conduit portion 200 in the fiber optic connector, the fiber optic connector can meet the requirements of corresponding adapter plug-in assembly and also meet the requirements of fiber optic cable 300 conduit laying.

[0032] As a specific example of this utility model, the aforementioned tube portion 100 is the inner core assembly of the MiniSC connector, and the adapter that is plugged into the connector body 6 is an Optitap adapter.

[0033] In other words, the fiber optic connector is an Optitap connector, and its non-tube-penetrating portion 200 is a connector housing that can be plugged into an Optitap adapter.

[0034] Based on the aforementioned design, existing MiniSC connectors can be utilized by designing a conversion housing that can be plugged into an Optitap adapter. This allows the inner core components of the MiniSC connector to be assembled with the designed conversion housing after being pulled through the conduit, resulting in a fiber optic connector compatible with the Optitap adapter interface. This fulfills the application requirements for fiber optic connectors to be laid through conduits and plugged into Optitap adapters.

[0035] Furthermore, in the preferred embodiment, the non-tube-penetrating portion 200 also includes a tail sleeve 11 and a sealing element 9. The tail sleeve 11 can be fitted around the outer periphery of the optical cable 300 and connected to the tail end of the connector body 6.

[0036] It is understood that, in order to accommodate the insertion of the conduit portion 100 into the tail sleeve 11, the inner diameter of the through hole in the middle of the tail sleeve 11 should be no less than the outer diameter of the conduit portion 100, or no less than the outer diameter of the conduit portion 100 after removing the traction cap 3. Thus, for the conduit portion 100 after the conduit installation is completed, it can be inserted from the tail end of the tail sleeve 11 and exit from the head end of the tail sleeve 11 (the end that can be connected to the connector body 6).

[0037] Meanwhile, a sealing hole 901 for the optical cable 300 to pass through is provided in the middle of the sealing member 9, and one end of the sealing member 9 can be limited and embedded in the tail end of the support body 8, while the other end can be axially pressed and limited by the tail sleeve 11.

[0038] To ensure the reliability of the sealing element 9, a corresponding limiting mechanism is provided for the embedding of the sealing element 9 during actual installation.

[0039] For example, in a preferred embodiment, an annular abutment surface is formed in the inner cavity of the end of the tail sleeve 11 that is used to connect with the connector body 6, so that after the tail sleeve 11 is connected to the connector body 6, the end face of the seal 9 can be pressed tightly by the annular abutment surface. More preferably, a gasket 10 is provided between the seal 9 and the tail sleeve 11. The gasket 10 can be sleeved on the outer periphery of the optical cable 300, with one end coaxially embedded in the inner cavity of the tail end of the connector body 6 and abutting the end face of the seal 9, and the other end abutting the annular abutment surface in the tail sleeve 11.

[0040] As another example, a limiting step 804 is provided in the inner cavity of the tail end of the support body 8 (i.e. the end used to connect the seal 9), for example by providing an annular protrusion on the inner cavity wall or by setting the end of the inner cavity as a variable diameter hole with "larger outside and smaller inside", thereby forming an annular limiting step 804.

[0041] It is understandable that, in actual installation, the limiting designs at both ends of the seal 9 can be set simultaneously, allowing one end of the seal 9 to abut against the limiting step 804 with its front end face after being embedded in the tail end of the support body 8. Combined with the tightness of the tail sleeve 11 against the tail end of the seal 9, the seal 9 can be compressed axially. At this time, the sealing hole 901 can shrink inward under the compression, thus tightly covering the outer periphery of the optical cable 300, thereby ensuring a seal between the seal 9 and the optical cable 300. Correspondingly, the seal 9 can also maintain a seal with the tail sleeve 11 and the support body 8 due to their tight fit.

[0042] More specifically, in the preferred embodiment, the outer diameter of the tube portion 100 is typically larger than the outer diameter of the optical cable 300, while the inner diameter of the sealing hole 901 in the sealing member 9 corresponds to the outer diameter of the optical cable 300. More preferably, the cross-sectional profile of the sealing hole 901 matches the cross-sectional profile of the optical cable 300 (i.e., they have the same shape) to ensure a tight fit of the optical cable 300 within the sealing hole 901. Furthermore, to allow the sealing member 9 to be fitted around the outer periphery of the optical cable 300, a notch is preferably radially provided on the outer periphery of the sealing member 9, communicating with the inner cavity of the sealing hole 901. This allows the optical cable 300 to be inserted into the sealing hole 901 through the notch, thereby avoiding interference from the tube portion 100 when fitting the sealing member 9.

[0043] It is understandable that the radial notch on the seal 9 can be made either during the manufacturing of the seal 9 or temporarily made during actual installation and use, which will not be elaborated here.

[0044] Furthermore, an annular limiting protrusion is provided on the outer periphery of the middle part of the connector body 6, and the non-tube-penetrating portion 200 also includes a dust cap 4 and a nut sleeve 7. The nut sleeve 7 can be fitted onto the outer periphery of the tail end of the connector body 6, with its end abutting against the annular limiting protrusion. Simultaneously, the dust cap 4 can cover the outer periphery of the connector body 6 for the insertion end, and after passing the annular limiting protrusion, it is threadedly connected to the end of the nut sleeve 7.

[0045] By using the combination of dust cap 4 and nut sleeve 7, the end of the fiber optic connector can be accurately blocked, ensuring the protection requirements of the ferrule assembly 1 after assembly.

[0046] More specifically, a sealing groove 601 is provided circumferentially on the outer periphery of the connector body 6 away from the end of the nut sleeve 7, and a sealing ring 5 is embedded in the sealing groove 601, so that when the dust cap 4 is connected to the nut sleeve 7, the sealing ring 5 can press against the inner wall of the dust cap 4 in the circumferential direction.

[0047] By utilizing the sealing ring 5, in conjunction with the aforementioned sealing element 9 at the tail end of the support body 8, the sealing effect at both ends of the fiber optic connector can be effectively guaranteed, enabling the assembled fiber optic connector to meet certain waterproof sealing requirements, such as meeting the IP68 sealing requirement.

[0048] In actual installation, the end of the connector body 6 used to connect to the tail sleeve 11 is a threaded connection end 602 with external threads. At this time, the beginning end of the tail sleeve 11 has internal threads, and the two are preferably connected by threads. More preferably, the inner hole of the tail end of the nut sleeve 7 (the end away from the dust cap 4) is set to a variable diameter form, so that the inner diameter of the end of the nut sleeve 7 is larger than the outer diameter of the end of the tail sleeve 11. Then, after the tail sleeve 11 is connected to the connector body 6, the beginning end of the tail sleeve 11 is embedded in the tail end of the nut sleeve 7, reducing the exposed connection gap and shortening the length of the connector.

[0049] Furthermore, to ensure the pre-locking effect after the nut sleeve 7 is fitted onto the outer periphery of the connector body 6, it is preferable to have a limiting groove 603 circumferentially formed along the outer periphery of the connector body 6, and a limiting protrusion protruding from the inner cavity of the nut sleeve 7. During the fitting of the nut sleeve 7, the limiting protrusion can be slightly deformed by compression, and when the nut sleeve 7 is in place, it embeds into the limiting groove 603. The axial pre-assembly locking between the nut sleeve 7 and the connector body 6 is completed by the cooperation between the limiting protrusion and the limiting groove 603. Subsequently, after the nut sleeve 7 is connected to the dust cap 4, the position of the nut sleeve 7 on the outer periphery of the connector body 6 is locked.

[0050] Further, for the through-tube portion 100 in the preferred embodiment, its insert assembly 1 includes an insert 101, an insert tail 102, an insert tail seat 103, and a spring 104. The tail end of the insert 101 (the end facing away from the insert end face) is connected to the head end of the insert tail 102, and the tail end of the insert tail 102 can connect to the insert tail seat 103 after passing through the inner hole of the insert body 2, with the insert tail seat 103 axially abutting against the end of the insert body 2. Simultaneously, the inner hole of the insert body 2 is a variable-diameter hole and forms an annular step 203; and the spring 104 is sleeved on the outer periphery of the insert tail 102 and axially limited by the annular step 203, such as... Figure 6 As shown in the image.

[0051] After the ferrule assembly 1 and the ferrule body 2 have been assembled as described above, the optical cable 300 can be inserted from the end of the ferrule tail 103, so that the optical fiber passes through the ferrule body 2 and is assembled and connected with the ferrule 101. Correspondingly, the end of the optical cable 300 is fixed (e.g., glued) in the ferrule tail 103.

[0052] Based on the aforementioned configuration of the ferrule assembly 1, the ferrule assembly 1 and the ferrule body 2 can be assembled. This assembly process can be completed in the factory. After assembly, the ferrule 101 can be axially displaced relative to the ferrule body 2 by the compression spring 104 to adapt to the subsequent insertion and conduction of the ferrule assembly 1.

[0053] More specifically, in the preferred embodiment, the insert tail 102 and the insert tail seat 103 are connected by threads; and / or, the connection between the traction cap 3 and the insert body 2 is also a threaded connection, that is, the outer periphery of the insert body 2 is provided with connecting threads 202, and the inner periphery of the end of the traction cap 3 is provided with internal threads, and the two are connected by threads.

[0054] More preferably, the front end of the ferrule 102 (the end connected to the ferrule 101) is provided with at least one guide notch 105 in the circumferential direction; or, the front end of the ferrule body 2 is provided with at least one axial notch similar to the guide notch 105 in the circumferential direction. Correspondingly, a guide key 805 is provided in the inner cavity of the support 8, such as... Figure 14 As shown in the figure. By using the combination of guide key 805 and guide notch 105, when the tube portion 100 of the traction cap 3 is inserted into the inner cavity of the support body 8, the guide key 805 is axially embedded in the guide notch 105.

[0055] In this way, anti-rotation assembly between the ferrule assembly 1 and the support body 8 can be achieved, and to a certain extent, foolproof assembly of the tube insertion part 100 in the support body 8 can also be achieved.

[0056] More preferably, the assembly between the support body 8 and the connector body 6 is also designed to prevent mistakes. In this case, the outer contour of the front end of the support body 8 is set in a mistake-proof form (i.e., a non-rotating structure), and a mistake-proof assembly hole 605 is provided in the inner cavity of the connector body 6, such as... Figure 9 , Figure 10 As shown, when the support body 8 is embedded in the connector body 6, the front end of the support body 8 is aligned and embedded in the foolproof assembly hole 605. In this way, foolproof assembly between the support body 8 and the connector body 6 can be achieved, avoiding misalignment between the support body 8 and the connector body 6. With the cooperation between the aforementioned guide notch 105 and guide key 805, the positional reliability of the ferrule assembly 1 after being installed in the connector body 6 can be fully guaranteed.

[0057] More specifically, a guide anti-rotation component 803 is also provided protruding from the outer periphery of the support body 8. The guide anti-rotation component 803 extends along the axial direction of the support body 8, such as... Figure 11 As shown in the diagram. Accordingly, a guide anti-rotation groove 604 is provided axially on the inner wall surface of the assembly cavity of the connector body 6, as shown in the diagram. Figure 9 As shown, when the support body 8 is embedded in the connector body 6, the guide anti-rotation member 803 can be embedded in the guide anti-rotation groove 604 to achieve guidance during assembly and anti-rotation before and after assembly.

[0058] More specifically, for the axial locking element in the preferred embodiment, it is preferably a pair of snap fasteners 801 disposed on the support body 8, such as... Figures 11-14 As shown in the figure. Simultaneously, a retaining step 201 is formed on the outer periphery of the tail end of the insert body 2, as shown in the figure. Figure 5 As shown, the two latches 801 can abut against the anti-retraction step 201 at their ends when the ferrule body 2 is inserted into the inner cavity of the support body 8, thereby preventing the ferrule body 2 from retracting due to the axial compression force on the ferrule 101 during connector insertion.

[0059] Furthermore, in actual installation, an axial notch is formed at the tail end of the support body 8 from the end towards the middle. This axial notch penetrates the inner and outer walls of the support body 8 and extends to the middle region of the support body 8. Simultaneously, a circumferential notch is formed from the end of the axial notch located in the middle of the support body 8, also penetrating the inner and outer walls of the support body 8. The length of the circumferential notch is no greater than half the circumference of the support body 8 at the location of the circumferential notch. Based on the axial and circumferential notches, a lateral flipping member 802 is formed on one side of the tail end of the support body 8. At this time, the cross-section of the lateral flipping member 802 is C-shaped, and it is connected to the main structure of the support body 8 with one side extending axially, allowing the lateral flipping member 802 to flip relative to that side.

[0060] Based on the side-flipping component 802, when the tube part 100 is inserted into the support body 8, the side-flipping component 802 can be pried open laterally, which facilitates the quick assembly of the ferrule assembly 1 and the ferrule body 2 in the support body 8.

[0061] For the lateral flipping component 802, its opening is particularly suitable for, for example Figure 13 As shown, when an annular protrusion (forming a limiting step 804) is provided in the inner cavity of the tail end of the support body 8, the inner hole of the annular protrusion corresponds to the outer diameter of the optical cable 300, and the inner diameter of the hole is smaller than the outer diameter of the ferrule body 2. The lateral flipping member 802 facilitates the insertion of the tube portion 100 into the support body 8. Furthermore, after the support body 8 and the connector body 6 are assembled, the lateral flipping member 802 can be locked by the abutment and limiting action of the inner wall surface of the connector body 6, ensuring that the tail end profile of the support body 8 always remains cylindrical.

[0062] The fiber optic connector of this invention adopts an assembly structure, which can be disassembled and transported. It is compact in size and can meet the requirements of laying in micro-ducts, as well as the requirements of plugging and conducting with large-size adapters (compared to the adapters of MiniSC connectors) after laying in ducts. This expands the application range of fiber optic connectors, reduces the duct resources required for laying optical cables, saves the cost of laying optical cables, and has excellent practical value.

[0063] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An optical fiber connector, characterized in that, Includes both the tubing section and the non-tubing section; The conduit-laying section can be installed in a conduit after the optical cable is connected. It includes a ferrule assembly, a ferrule body, and a traction cap. The ferrule assembly is used to connect with the optical fiber in the optical cable and can be assembled with the ferrule body after the optical fiber is connected. The traction cap can be sleeved on one end of the ferrule body to protect the ferrule assembly during conduit installation. The non-tube-penetrating portion can be assembled with the tube-penetrating portion after the traction cap has been removed, for connection to the corresponding adapter and to complete optical transmission conduction; and The non-penetrating portion includes a connector body and a support body; the support body has an inner cavity and an axial locking member, the penetrating portion after removing the traction cap can be coaxially embedded into the inner cavity, and the ferrule body can be axially locked by the axial locking member; the middle part of the connector body has an assembly cavity, one end of which is used for plugging and fitting with an adapter, and the support body can be embedded and fixed in the assembly cavity from the other end of the connector body.

2. The fiber optic connector according to claim 1, characterized in that, The tube portion is the inner core assembly of the MiniSC connector, and the adapter that plugs into the connector body is an Optitap adapter.

3. The fiber optic connector according to claim 1 or 2, characterized in that, The non-penetrating section also includes a tail sleeve and a seal; The tail sleeve can be fitted around the outer periphery of the optical cable and connected to the tail end of the connector body. The sealing element has a sealing hole in the middle for the optical cable to pass through; the cross-section of the sealing hole matches the cross-section of the optical cable, and one end of the sealing element can be limited and embedded in the tail end of the support body, while the other end can be axially pressed and limited by the tail sleeve.

4. The fiber optic connector according to claim 3, characterized in that, The tail sleeve is used to connect to the inner cavity of one end of the connector body, which has an annular abutment surface, and a gasket is provided between the seal and the tail sleeve; the gasket can be sleeved on the outer periphery of the optical cable, one end of which is coaxially embedded in the inner cavity of the tail end of the connector body and abuts against the end face of the seal, and the other end of which abuts against the annular abutment surface in the tail sleeve. and / or A limiting step is formed in the inner cavity of the tail end of the support body for connecting the seal, so that one end of the seal can be axially pressed against the limiting step after being embedded in the tail end of the support body.

5. The fiber optic connector according to claim 1, 2, or 4, characterized in that, The connector body has an annular limiting protrusion on the outer periphery of the middle part, and the non-tube-penetrating part also includes a dust cap and a nut sleeve. The nut sleeve can be fitted onto the tail end of the connector body and abut against the annular limiting protrusion at its end; the dust cap can be covered on the outer periphery of the connector body for insertion and threadedly connected to the end of the nut sleeve after passing the annular limiting protrusion.

6. The fiber optic connector according to claim 5, characterized in that, The connector body has a sealing groove circumferentially formed on the outer periphery of the end opposite to the nut sleeve, and a sealing ring is embedded in the sealing groove, so that when the dust cap is connected to the nut sleeve, the sealing ring can press against the inner wall of the dust cap in the circumferential direction.

7. The fiber optic connector according to claim 1, 2, 4, or 6, characterized in that, The ferrule assembly includes a ferrule, a ferrule tail, a ferrule tail seat, and a spring; The insert is connected to the head end of the insert tail shank, and the tail end of the insert tail shank can be connected to the insert tail seat after passing through the inner hole of the insert body; the inner hole of the insert body is a variable diameter hole and forms an annular step; the spring is sleeved on the outer circumference of the insert tail shank and is axially limited by the annular step.

8. The fiber optic connector according to claim 7, characterized in that, The front end of the ferrule is provided with at least one guide notch in the circumferential direction; or, the front end of the ferrule body is provided with at least one guide notch in the circumferential direction. Accordingly, a guide key is provided in the inner cavity of the support body, which can be axially embedded in the guide notch when the tube portion of the traction cap is removed and embedded in the inner cavity of the support body.

9. The fiber optic connector according to claim 1, 2, 4, 6, or 8, characterized in that, The axial locking element is a pair of buckles arranged on the support body, and a backstop step is formed on the outer periphery of the tail end of the insert body, so that the two buckles can abut against the backstop step when the insert body is embedded in the inner cavity of the support body. and / or The outer contour of the front end of the support body is designed to prevent mistake-proofing, and a mistake-proofing assembly hole is provided in the inner cavity of the connector body, so that when the support body is embedded in the connector body, the front end of the support body is aligned and embedded in the mistake-proofing assembly hole.

10. The fiber optic connector according to claim 1, 2, 4, 6, or 8, characterized in that, The outer periphery of the support body is provided with a guide anti-rotation component, which extends along the axial direction of the support body; correspondingly, the inner wall of the assembly cavity of the connector body is provided with a guide anti-rotation groove along the axial direction, so that when the support body is embedded in the connector body, the guide anti-rotation component can be embedded in the guide anti-rotation groove to achieve guidance and anti-rotation. and / or The tail end of the support body has an axial notch from the end to the middle, and a circumferential notch is formed from the end of the axial notch located in the middle of the support body. The length of the circumferential notch is not greater than half of the circumference of the support body where the circumferential notch is formed. Based on the axial notch and the circumferential notch, a lateral flipping member is formed at the tail end of the support body.

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