Optical fiber connector assembly and through-tube optical fiber connector

Abstract

The invention discloses an optical fiber connector assembly and a through-tube optical fiber connector. The head of a tail handle is used for being fixedly connected with an insertion core assembly; a raised clamping part is arranged on the outer side wall of the tail part of the tail handle; a part of the inner diameter of the connecting piece is matched with a part of the outer diameter of the tail handle, so that the connecting piece at least partially covers the outer side of the tail handle and is pre-tightened and propped by the elastic piece; a through groove penetrating through the inner wall and the outer wall is formed in the connecting piece, and when the tail handle is sleeved with the connecting piece, the clamping part is clamped in the through groove so as to connect the connecting piece with the tail handle; the anti-glue hose is used for accommodating an optical fiber connected to the insertion core assembly, and the head of the anti-glue hose is plugged into the tail of the tail handle, so that anti-glue protection is carried out during glue injection, and the anti-glue hose and the tail handle are fastened and connected through glue. On the premise that the connection reliability is guaranteed, the radial size of the penetrating pipe of the connector is reduced.

Description

Technical Field

[0001] This invention relates to the field of optical fiber communication connection technology, and more specifically to an optical fiber connector assembly and a conduit-mounted optical fiber connector. Background Technology Fiber optic connectors are key components in fiber optic communication networks that enable detachable connections between optical fibers. In fiber-to-the-home (FTTH) installation scenarios, connectors are often installed by inserting them into microducts pre-embedded in walls or conduits. Please refer to [reference needed]. Figure 1 This diagram illustrates a conventional method of installing a fiber optic connector through a conduit. A traction cap 2 is installed on the fiber optic connector 1. After a traction rope 3 is fixed to the traction cap 2, the fiber optic connector 1 is pulled to the other end by pulling the traction rope 3, thus achieving wall penetration / protection of the fiber optic connector. Generally, the inner diameter of these conduits or perforations is small, for example, 4 to 5 millimeters, to achieve concealed wiring and reduce the impact on the building structure.

[0002] To address the challenges of pipe insertion, Chinese Patent CN222913918U discloses a fiber optic connector featuring a split-shell design. This design separates the core components of the connector from part of the shell, inserts them through a conduit, and then assembles them, thus alleviating to some extent the difficulty of pipe insertion caused by the large overall outer diameter. However, this solution still requires on-site assembly of the shell components after pipe insertion (through the hole), making the process relatively cumbersome. Furthermore, the split structure itself can introduce structural stability issues.

[0003] It is evident that existing fiber optic connectors for conduit (hole) applications, in the pursuit of miniaturization and reliability, often face a contradiction between connection stability and radial dimensions. Specifically, to ensure accurate and secure fiber optic splicing, connectors typically incorporate elastic elements (such as springs) to provide axial preload. A common practice is to enclose and secure the elastic element and core components such as the ferrule with an additional housing or clamping device. While this enclosed design helps protect the internal structure and distribute stress evenly, it inevitably increases the overall radial dimension of the connector, making it difficult to adapt to conduits with smaller inner diameters.

[0004] Furthermore, existing technologies typically use adhesive bonding to increase structural strength to withstand the pulling forces during the insertion process. To prevent adhesive from contaminating internal moving parts when fixing the optical fiber, a soft anti-adhesion tube is usually installed on the outside of the tailstock, which further occupies radial space and restricts the miniaturization of the connector's outer diameter.

[0005] Therefore, how to reduce the radial dimension of the connector through the tube while ensuring connection reliability is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] Based on the above situation, the main objective of the present invention is to provide an optical fiber connector assembly and a tube-mounted optical fiber connector, so as to reduce the tube-mounted radial dimension of the connector while ensuring connection reliability.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, embodiments of the present invention disclose an optical fiber connector assembly, comprising: a waterproof tubing, a tailstock, a connector, and an elastic element, wherein: The head of the tailstock is used to securely connect the ferrule assembly; the outer side wall of the tailstock is provided with a protruding snap-fit ​​part. The inner diameter of the connector is adapted to the outer diameter of the tail shank so as to at least partially cover the outer side of the tail shank and be pre-tightened by the elastic element; the connector is provided with a through groove that penetrates the inner and outer walls. When the connector is covered on the tail shank, the snap-fit ​​part snaps into the through groove to connect the connector and the tail shank. The adhesive-resistant tubing is used to accommodate the optical fiber connected to the ferrule assembly. The head of the adhesive-resistant tubing is inserted into the tail of the tailstock to provide adhesive protection during glue application and to secure the connection between the adhesive-resistant tubing and the tailstock with glue.

[0008] Optionally, an annular recess is provided on the outer wall of the connector to increase the contact area for abutment and fixation with the outer shell.

[0009] Alternatively, the annular recess is positioned closer to the head of the connector than the through groove.

[0010] Optionally, the outer wall of the tail of the connector is provided with several raised grooves to cooperate with the fixing crimping ring.

[0011] Optionally, an annular protrusion is grown on the outer wall of the head of the tailstock, one end of the elastic element abuts against the annular protrusion near the end of the connector, and the other end abuts against the head end of the connector.

[0012] Alternatively, the elastic element may be directly covered by the housing of the fiber optic connector.

[0013] Optionally, the number of snap-fit ​​parts is at least two; The tailstock has a semi-enclosed opening at its tail end, and the locking parts are symmetrically distributed on the outer side wall of the semi-enclosed opening.

[0014] Optionally, the head of the tailstock is provided with a guide structure to guide the direction of the fixing ferrule assembly and the tailstock.

[0015] Secondly, embodiments of the present invention disclose a perforated optical fiber connector, comprising: The fiber optic connector assembly disclosed in the first aspect above; Flanged ferrule assembly for connecting fiber optic cables; Housing, used to cover and secure fiber optic connector assemblies and ferrule assemblies; A dust cap is used to cover the insert assembly, and the head end of the dust cap is provided with a connecting ring for traction by a traction rope.

[0016] Optionally, the outer casing is a split structure, and the outer casing includes: The first housing includes a first fixing structure and a second fixing structure disposed at both ends. The first housing is fixedly connected to the ferrule assembly through the first fixing structure and circumferentially surrounds the ferrule assembly. The second outer shell has its first end detachably connected to the second fixing structure. After the second outer shell is fixedly connected to the first outer shell, it surrounds the optical cable in the circumferential direction.

[0017] Optionally, it also includes: The tail sleeve is connected to the second end of the second housing to secure the second end of the second housing to the optical cable.

[0018] Optionally, the tail cover includes: The internal thread section is located near the head end of the tail sleeve, through which the tail sleeve is threadedly connected to the second outer shell. The engagement section is located at the tail of the internal thread section, and the inner diameter of the engagement section gradually decreases from the head to the tail. When the tail sleeve is threaded onto the second outer shell, the engagement force of the engagement section on the second outer shell gradually increases.

[0019] Optionally, the second housing is snapped into and fixed to the first housing. Beneficial effects

[0020] The fiber optic connector assembly and conduit fiber optic connector disclosed in the embodiments of the present invention bring the following significant advantages: 1. Significantly reduce the radial dimension of the tube. By inserting the head of the adhesive-resistant flexible hose into the tailstock, the internal space of the tailstock is fully utilized, avoiding the radial dimension occupied by the traditional external hose wrapping method. The internal insertion layout of this invention minimizes the overall outer diameter of the connector, thereby expanding its application scenarios.

[0021] During glue injection, not only can an effective seal be formed to prevent glue from contaminating internal moving parts, but the glue can also be used to firmly connect the glue-proof hose to the tail shank, achieving a secure fixation between the two and preventing the glue-proof hose from falling off due to its plug-in design.

[0022] 2. Improve connection stability and structural reliability The engagement mechanism between the snap-fit ​​part and the through groove, combined with the pre-tightening contact of the elastic element, forms a stable rigid connection. When the connector is fitted onto the tail shank, the snap-fit ​​part engages in the through groove, ensuring secure axial and radial fixation and reducing the risk of displacement of the component due to vibration or pulling during pipe insertion. Furthermore, the use of adhesive injection can further secure the adhesive-resistant hose to the tail shank, achieving double fixation.

[0023] In addition, the elastic element provides preload between the tailstock and the connector, forming a preload buffer that can absorb external impact energy, thereby reducing structural fatigue and extending the service life of the connector.

[0024] 3. Simplify assembly process and improve production efficiency. The modular design allows for quick assembly of the adhesive-resistant hose, tailstock, connectors, and elastic components. The snap-fit ​​mechanism and through-slot require no special tools or complex operations, reducing assembly difficulty and time, and improving assembly efficiency.

[0025] In summary, the fiber optic connector assembly and conduit-mounted fiber optic connector disclosed in this invention, through integrated layout, allow for efficient cooperation of each component within a limited space, avoiding the redundancy caused by the stacking of multiple components in traditional methods. This achieves a reduction in the radial dimension of the connector within the conduit while ensuring connection reliability. Other beneficial effects of the present invention will be explained in detail through the introduction of specific technical features and technical solutions in specific embodiments. Those skilled in the art should be able to understand the beneficial technical effects brought about by these technical features and technical solutions through the introduction of these technical features and technical solutions. Attached Figure Description

[0026] The embodiments of the present invention will now be described with reference to the accompanying drawings. In the drawings: Figure 1 This is a schematic diagram of a fiber optic connector being threaded through a conduit in the prior art; Figure 2 This is a three-dimensional structural diagram of a fiber optic connector assembly disclosed in this embodiment; Figure 3 This is an exploded view of an optical fiber connector assembly disclosed in this embodiment; Figure 4 This is a schematic diagram of a three-dimensional structure of a tailstock and a corresponding cross-sectional view AA disclosed in this embodiment; Figure 5 This is a schematic diagram of the assembly state of the adhesive-resistant hose and the tailstock disclosed in this embodiment; Figure 6 This is a schematic diagram of a perforated fiber optic connector structure disclosed in this embodiment; Figure 7 for Figure 6 A schematic diagram of the cross-section BB; Figure 8 for Figure 7 A partial schematic diagram of part C in the middle; Figure 9 This is a schematic diagram of a dust cap structure disclosed in this embodiment; Figure 10 for Figure 7 A schematic diagram of a local D-structure. Detailed Implementation

[0027] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail, but well-known methods, processes, procedures, and elements are not described in detail in order to avoid obscuring the essence of the present invention.

[0028] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0029] Unless the context explicitly requires it, the words "comprising," "including," and similar terms throughout the specification and claims should be interpreted as encompassing rather than being exclusive or exhaustive; that is, meaning "including but not limited to."

[0030] In the description of this invention, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0031] To reduce the radial dimension of the connector through the conduit while ensuring connection reliability, this embodiment discloses an optical fiber connector assembly, which is particularly suitable for through-conduit optical fiber connectors. Please refer to [reference needed]. Figure 2 and Figure 3 , Figure 2 This is a three-dimensional structural diagram of a fiber optic connector assembly disclosed in this embodiment. Figure 3 This is an exploded view of an optical fiber connector assembly disclosed in this embodiment. The optical fiber connector assembly includes: a rubber-resistant flexible tube 11, a tail shank 12, a connector 13, and an elastic member 14, wherein: The head of the tailstock 12 is used to securely connect the ferrule assembly 100; a protruding snap-fit ​​portion 121 is provided on the outer side wall of the tail portion of the tailstock 12. Specifically, the tailstock 12 is made of metal or high-strength engineering plastic to ensure structural strength and durability. Please refer to... Figure 3 and Figure 4 , Figure 4 This is a three-dimensional structural diagram of a tailstock disclosed in this embodiment, along with a corresponding cross-sectional view (AA). The head of the tailstock 12 has a receiving cavity 123. When the insert assembly 100 is connected to the tailstock 12, the end of the insert assembly 100 is inserted into the receiving cavity 123 and fixedly connected to the insert tailstock 12 within the receiving cavity 123. This fixing can be achieved through adhesive bonding or mechanical pressing. The outer wall of the tail portion of the tailstock 12 is machined with a protruding snap-fit ​​portion 121, which is hook-shaped or hemispherical. Please refer to... Figure 3 and Figure 4 The tail of the shank 12 has a cavity inside to accommodate the head of the rubber-resistant hose 11. For example... Figure 4 As shown, the tail shank 12 connects the receiving cavity 123 of the head and the cavity of the tail through a hollow structure, thereby allowing the optical fiber to pass from the tail of the tail shank 12 to the head.

[0032] Please refer to Figure 2 and Figure 3 The connector 13 has a cylindrical structure, and a portion of the inner diameter of the connector 13 is adapted to a portion of the outer diameter of the tail shank 12, thereby allowing the connector 13 to at least partially cover the outer side of the tail shank 12 axially. Specifically, this covering can be a portion of the connector 13 and a portion of the tail shank 12, and in some embodiments, it can be the entirety of one covering a portion of the other. The connector 13 is made of metal or plastic, and its outer wall can be designed to have a smooth or textured surface. A through groove 131 is formed on the connector 13, penetrating both the inner and outer walls. The shape of the through groove 131 matches the snap-fit ​​portion 121, for example, a rectangular or circular opening, and its size is slightly larger than the snap-fit ​​portion 121 to allow the snap-fit ​​portion 121 to be inserted. When the connector 13 is fitted onto the tail shank 12, the snap-fit ​​portion 121 snaps into the through groove 131 (e.g., when the connector 13 is fitted onto the tail shank 12, the snap-fit ​​portion 121 engages with the through groove 131). Figure 2 As shown), a detachable rigid connection is formed.

[0033] Please refer to Figure 2 and Figure 3 The elastic element 14, which is a helical spring or other elastic element, is fitted over the outside of the tailstock 12. The elastic element 14 provides axial preload to keep the connector 13 in close contact with the tailstock 12. Specifically, when the connector 13 is fitted over the outside of the tailstock 12 axially, one end of the elastic element 14 contacts the head end face of the connector 13, and the other end contacts the outer surface of the tailstock 12 (such as the natural protrusion of the head of the tailstock 12 or a specially designed abutment surface), thereby generating preload after assembly and enhancing connection stability.

[0034] Please refer to Figure 3 and Figure 5 , Figure 5 This is a schematic diagram of the assembly structure of the adhesive-resistant flexible tube and the tailstock disclosed in this embodiment. In this embodiment, the adhesive-resistant flexible tube 11 is a soft tubular structure made of rubber or flexible plastic, used to accommodate and protect the optical fiber (not shown in the figure) connected to the ferrule assembly 100. In a specific embodiment, the head of the adhesive-resistant flexible tube 11 is inserted into the tail of the tailstock 12 to provide adhesive protection during glue injection and to securely connect the adhesive-resistant flexible tube 11 and the tailstock 12 with glue. Specifically, the head of the adhesive-resistant flexible tube 11 is directly inserted into the cavity at the tail of the tailstock 12 through an interference fit to achieve initial fixation. In the process of fixing the optical fiber with glue, the adhesive-resistant flexible tube 11 plays a role in preventing glue overflow. At the same time, the glue bonds and fixes the adhesive-resistant flexible tube 11 to the inner wall of the tailstock 12, forming a double fixation.

[0035] During assembly, first insert the head of the adhesive-resistant hose 11 into the tail of the tail shank 12, ensuring it is fully inserted; then install the elastic element 14, placing it around the outside of the tail shank 12; subsequently, insert the connector 13 axially along the tail shank 12, aligning the locking part 121 with the through groove 131, and gently press until the locking part 121 engages in the through groove 131. During the insertion of the connector 13 into the tail shank 12, the elastic element 14 is compressed, generating a pre-tightening force. The entire assembly process requires no special tools and is simple to operate. Therefore, it achieves the beneficial effects of miniaturization, high reliability, and easy assembly.

[0036] To prevent the outer casing from loosening or shifting during the tubing insertion process, in an optional embodiment, please refer to... Figure 3 The connector 13 has an annular recess 132 on its outer wall to increase the contact area for abutment and fixation with the outer shell. For details, please refer to... Figure 6 , Figure 7 and Figure 8 , Figure 6 This is a schematic diagram of a perforated fiber optic connector structure disclosed in this embodiment. Figure 7 for Figure 6 A cross-sectional view of section BB. Figure 8 for Figure 7 A partial schematic diagram of part C is shown. In this embodiment, the outer wall of the connector 13 is further processed with an annular recess 132. The annular recess 132 is a groove-shaped structure surrounding the outer wall of the connector 13. Its cross-section can be arc-shaped, trapezoidal, or rectangular, and its depth and width are designed according to actual needs. The annular recess 132 can be integrally formed with the connector 13 through turning, injection molding, or stamping processes, thereby ensuring structural integrity.

[0037] Please refer to the following during the specific implementation process. Figure 3 and Figure 8 The annular recess 132 is preferably located in the middle of the outer wall of the connector 13 or near the head, and the specific location can be adjusted according to the inner wall structure of the housing. The annular recess 132 can be enlarged to fit the housing (e.g., Figure 7 , Figure 8 The abutting fixed contact area of ​​the second outer shell 300 shown. When the outer shell (e.g., the first outer shell 200) is fitted onto the connector 13, the inner wall of the outer shell forms a surface contact with the groove surface of the annular recess 132, rather than a point or line contact, thereby enhancing the friction and abutting force.

[0038] To further suppress axial wobble during tube insertion while minimizing the connector's outer diameter, in an optional embodiment, the annular recess 132 is positioned closer to the head of the connector 13 relative to the through groove 131. Please refer to... Figure 3 and Figure 8The center point of the annular recess 132 is offset by a certain distance relative to the through groove 131 (the snap-fit ​​part 121 for snapping the tail shank 12) towards the head of the connector 13, thereby ensuring that when the connector 13 is fitted onto the tail shank 12, the annular recess 132 is exactly located at the corresponding position of the inner wall protrusion or fixing structure of the outer shell (such as the first outer shell 200).

[0039] In this embodiment, by positioning the annular recess 132 closer to the head, its contact point with the housing is closer to the mating interface of the ferrule assembly 100. When a traction force is applied to the connector head, the external force is directly transmitted to the annular recess 132 through the housing, rather than acting on the tail of the connector 13. This reduces the torque load on the connection point between the snap-fit ​​portion 121 and the through groove 131, and the preload of the elastic element 14 is more evenly distributed to the head of the connector 13, improving the coordination of the buffering effect.

[0040] As can be seen, in this embodiment, by adjusting the axial position, the axial wobbling during the tube insertion process is effectively suppressed while keeping the outer diameter of the connector minimized, thus reducing the risk of component displacement.

[0041] To achieve a secure fixation of the optical cable, in an optional embodiment, the outer wall of the tail portion of the connector 13 is provided with a plurality of raised grooves 133 to cooperate with the fixing crimping ring 15 and the tensile reinforcement (e.g., Kevlar) in the optical cable 500. Please refer to Figure 3 The raised texture 133 is located on the outer wall of the tail end of the connector 13, that is, the end of the connector 13 away from the ferrule assembly 100. In specific implementation, the annular raised structure can be directly formed during the processing of the connector 13. The main function of the raised texture 133 is to cooperate with the crimping ring 15 to more effectively fix the optical cable 500 through the tensile reinforcement (such as Kevlar) in the optical cable 500. Please refer to [reference needed]. Figure 2 and Figure 3 When the crimping ring 15 is fitted onto the tail of the connector 13 and radially crimped, the crimping ring 15 undergoes plastic deformation. The peak-valve structure of the ridges 133 embeds into (or is wrapped by) the relatively soft inner wall of the crimping ring 15, thereby increasing the contact area and friction, thus forming a strong mechanical lock. This effectively transfers the tensile force of the optical cable to the connector 13, thereby improving the tensile strength of the component and preventing the optical cable from being pulled out during installation or use. In addition, the ridges 133 also provide guidance and restraint for the crimping ring 15 during the crimping process, ensuring uniform distribution of crimping force and preventing axial slippage or twisting of the crimping ring during crimping.

[0042] To ensure the accuracy of fiber optic splicing, in an optional embodiment, an annular protrusion 122 is grown on the outer wall of the head of the tail shank 12. One end of the elastic member 14 abuts against the annular protrusion 122 near the end of the connector 13, and the other end abuts against the head end of the connector 13. Please refer to... Figure 3 and Figure 4 The annular protrusion 122 is integrally formed with the tailstock 12 through a processing technology and is located on the outer wall of the head of the tailstock 12, forming an annular stepped structure. An elastic element 14 (e.g., a spring) is fitted onto the outside of the tailstock 12, with its head end directly abutting the end face of the annular protrusion 122, and its tail end contacting the head end face of the connector 13. When the connector 13 is fitted onto the tailstock 12 and engaged with the through groove 131 through the snap-fit ​​part 121, the elastic element 14 is compressed, generating an axial preload. Because the annular protrusion 122 has an annular stepped structure, the tension of the elastic element 14 (e.g., a spring) is evenly distributed during the abutment process, avoiding stress concentration. This reduces the impact of vibration and impact on internal components during the tube insertion process, improves the connection reliability of the components, and ensures the accuracy of fiber optic splicing.

[0043] To further reduce the radial dimension, in an optional embodiment, the elastic element 14 is directly covered by the housing of the fiber optic connector. Specifically, please refer to... Figure 2 , Figure 3 and Figure 7 The elastic element 14 is exposed and covers the outside of the tail shank 12, thereby reducing the outer diameter of the fiber optic connector in the radial direction. To protect the elastic element 14, in this embodiment, when the outer shell (e.g., the first outer shell 200) covers the outside of the fiber optic connector assembly, its inner wall directly covers the elastic element 14, thus protecting it. Therefore, in this embodiment, by having the outer shell of the fiber optic connector directly cover the elastic element 14, both the elastic element 14 can be protected, and the outer diameter of the fiber optic connector can be reduced in the radial direction.

[0044] To improve the stability of the snap-fit ​​and facilitate the insertion of the hose, in an optional embodiment, the number of snap-fit ​​parts 121 is at least two; the tail of the tail shank 12 is provided with a semi-enclosed opening 120, and the snap-fit ​​parts 121 are symmetrically distributed on the outer side wall of the semi-enclosed opening 120.

[0045] For details, please refer to Figure 4 and Figure 5The tail of the ferrule 12 has a semi-enclosed opening 120, which is U-shaped or C-shaped to facilitate the insertion of the optical fiber and the installation of the adhesive-resistant tubing 11 during glue application. The locking portion 121 is a protruding structure (such as hemispherical or hook-shaped), and there are at least two locking portions 121 (e.g., 2, 3, etc.), symmetrically distributed on the outer wall of the semi-enclosed opening 120. In specific implementations, the locking portion 121 can be a structure formed by cutting the tail of the ferrule 12, that is, the locking portion 121 is integrally formed with the tail of the ferrule 12; the locking portion 121 can also be an independent component fixed to the ferrule tail 12. When the connector 13 is fitted onto the tail shank 12, the snap-fit ​​part 121 snaps into the through groove 131 of the connector 13. Due to the symmetrical distribution, the snap-fit ​​force is evenly transmitted in the circumferential direction, reducing stress concentration at a single point and preventing the connector 13 from deflecting or loosening due to vibration or pulling during the pipe insertion process. This effectively suppresses radial sway and improves the torsional performance of the component.

[0046] To facilitate quick installation by the user, in an optional embodiment, the head of the tailstock 12 is provided with a guide structure 124 for guiding the orientation of the fixing ferrule assembly 100 and the tailstock 12. Please refer to... Figure 4 and Figure 5 The guide structure 124 is machined on the outer wall of the head of the tail shank 12, for example, forming a tapered conical surface or an annular guide groove. In specific implementation, the guide structure 124 can be an inclined surface or a conical surface. In this embodiment, the guide structure 124 is specifically a guide groove, which is obtained by grooving the head end of the original standard part, the ferrule tail shank 12, along the axial direction. Specifically, the annular protrusion 122 can be reused to make the guide structure 124. The function of the guide structure 124 is to provide initial positioning when the fiber optic connector is mated, ensuring accurate alignment between the ferrule assembly 100 and the mating terminal. When the fiber optic connector is inserted into the adapter or another connector, the guide structure 124 first contacts the inner wall of the mating terminal, and automatically corrects the position of the ferrule assembly 100 through the guiding action of the inclined surface, avoiding connection failure or fiber damage caused by angular deviation. In addition, the guide structure 124 cooperates with the pre-tightening force of the elastic element 14 to absorb slight impacts during the mating process, improving the connection success rate.

[0047] This embodiment also discloses a perforated fiber optic connector; please refer to [reference needed]. Figure 6 and Figure 7 The perforated fiber optic connector includes: the fiber optic connector assembly, ferrule assembly 100, housing, and dust cap 16 as described in the above embodiments (see Figure 9 ), as detailed below: The ferrule assembly 100 is used to accommodate optical fibers, thereby mating with optical fiber connectors / adapters. Specifically, it enables the establishment of detachable connections between the optical ports of devices (such as switches, routers, OLTs / ONUs) to achieve device interconnection.

[0048] The housing (described below) is used to enclose and secure the fiber optic connector assembly and ferrule assembly 100, providing mechanical protection and environmental sealing for the internal precision components. The housing typically covers the outside of the fiber optic connector assembly, and its inner wall is adapted to the shape of components such as connector 13, and can be secured by means of snap-fit, thread, or interference fit.

[0049] Dust cap 16 is used to cover ferrule assembly 100, please refer to [reference needed]. Figure 2 and Figure 9 , Figure 9 This is a schematic diagram of a dust cap structure disclosed in this embodiment. During pipe installation and storage, the dust cap 16 covers the end face of the ferrule assembly 100 to prevent dust, moisture, and other contaminants from entering the ferrule, thereby protecting the precision mating end face. The dust cap 16 can be tightly fitted onto the head of the ferrule assembly 100. Please refer to... Figure 9 The dust cap 16 has a connecting ring 161 at its head end for use with a traction rope. This connecting ring 161 is a protruding ring or perforated structure specifically designed for the traction rope to pass through or be attached to. During pipe installation, before the outer shell is installed onto the fiber optic connector assembly, the dust cap 16 is first screwed onto... Figure 2 The head of the fiber optic connector assembly shown is used to protect the ferrule assembly 100, and a traction rope is connected to the connecting ring 161. By pulling the traction rope, the entire perforated fiber optic connector (or connector assembly) can be dragged through the pipe. Finally, the housing and fiber optic connector assembly are assembled on site.

[0050] To enable the perforated fiber optic connector to pass through channels with smaller bending angles, in an optional embodiment, the housing is a split structure, which consists of a first housing 200 and a second housing 300 that are detachably connected. (See reference...) Figure 6 and Figure 7 The first outer shell 200 includes a first fixing structure 210 and a second fixing structure 220 disposed at both ends. The first outer shell 200 is fixed to the annular recess 132 on the outer wall of the connector 13 through the first fixing structure 210 and circumferentially surrounds the connector 13. The second outer shell 300 has its first end detachably connected to the second fixing structure 220. After the second outer shell 300 is fixedly connected to the first outer shell 200, it circumferentially surrounds the optical cable 500. Details are as follows: Please refer to Figure 6 and Figure 7 The primary function of the first outer shell 200 is to house and protect the fiber optic connector assembly, including core components such as the connector 13, tail shank 12, and ferrule assembly 100. The second outer shell 300 serves as an extended protective shell, with its head end connected to the first outer shell 200, and its main body used to circumferentially surround and protect the introduced optical cable 500.

[0051] like Figure 7 and Figure 8As shown, a first fixing structure 210 is provided inside the head end of the first housing 200. The first fixing structure 210 can be an inwardly protruding annular flange or a plurality of circumferentially distributed protrusions. The first fixing structure 210 is used to axially abut against the annular recess 132 (see above description) on the outer wall of the connector 13 to limit the movement of the first housing 200 relative to the connector 13.

[0052] To facilitate the fixing of the first outer shell 200 and the connector 13 and avoid mechanical interference, in the preferred embodiment, please refer to... Figure 8 An axial gap of a preset distance is designed at the interface between the first fixing structure 210 and the annular recess 132; a matching ramp is provided at the entrance of the first fixing structure 210 into the annular recess 132. This arrangement allows the first fixing structure 210 to slide into the annular recess 132 and abut against it via the matching ramp, thereby achieving the abutment and fixation between the first outer shell 200 and the connector 13.

[0053] It should be noted that, in the specific implementation process, the axial clearance of the preset distance can be determined according to actual needs, as long as the first fixing structure 210 can slide into the annular recess 132 to achieve contact.

[0054] Please refer to Figure 6 and Figure 7 A second fixing structure 220 is provided on the outer side of the tail end of the first outer shell 200 for fixed connection with the second outer shell 300. In a preferred embodiment, the second outer shell 300 is snap-fitted to the first outer shell 200. For snap-fit ​​fixing, please refer to... Figure 6 and Figure 7 The second fixing structure 220 can be designed as an annular groove or a series of circumferentially arranged snaps. The inner side of the head end (first end) of the second housing 300 is correspondingly provided with inwardly protruding buckles or ribs. During installation, the second housing 300 is axially fitted onto the first housing 200. When the snaps on its inner side slide to the position of the second fixing structure 220 (groove), they snap into the groove under the elastic action of the material, completing the fastening (e.g., Figure 7 (As shown).

[0055] In this embodiment, a quick, reliable, and detachable connection between the first outer shell 200 and the second outer shell 300 is achieved through a snap-fit ​​method. After the two are fixedly connected, the first outer shell 200 circumferentially encloses the area of ​​the connector 13 and the ferrule assembly 100, while the second outer shell 300 extends circumferentially to enclose the optical cable 500, thus providing external protection for the connector assembly.

[0056] In this embodiment, the second housing 300 can be quickly installed and disassembled without tools through sliding contact and snap-fit ​​connection, facilitating on-site construction, subsequent maintenance, or component replacement. For example, in a wall (hole) scenario, by setting the fiber optic connector as a split structure (at this time, the housing is not installed to the fiber optic connector assembly), the assembly only needs to be passed through the wall (hole). After passing through, the first housing 200 and the second housing 300 are assembled on-site (of course, in some embodiments, the tail sleeve 400 is also assembled on-site), reducing the axial dimension of the fiber optic connector's wall (hole) passage portion, thereby enabling it to pass through narrower channels with smaller bending angles.

[0057] To reliably secure the second end of the second housing 300 to the optical cable 500, in an optional embodiment, the perforated fiber optic connector disclosed in this embodiment further includes a tail sleeve 400. The tail sleeve 400 is connected to the second end of the second housing 300. Pressure is applied to the optical cable by compressing (directly compressing or compressing through a sealing gasket) the optical cable through the second end of the second housing 300, thereby securing the tail sleeve 400 and the second end of the second housing 300 to the optical cable 500. Specifically, please refer to... Figure 6 and Figure 7 The second end (tail end, i.e., the end furthest from the first outer shell 200) of the second outer shell 300 is fitted over the outer sheath of the optical cable 500. The tail sleeve 400 is further fitted over the outer side of the second end of the second outer shell 300. When the tail sleeve 400 is tightened, the second outer shell 300 is radially compressed, causing it to press against the sealing gasket, thereby applying pressure to the optical cable 500 and achieving mechanical anchoring of the optical cable. This effectively resists the axial tensile force when the optical cable is pulled and transmits the external force through the second outer shell 300 and the first outer shell 200 to the entire connector body, avoiding direct stress on the optical fiber itself.

[0058] To enhance the securing effect of the tail sleeve on the optical cable, in an optional embodiment, the tail sleeve 400 includes: an internal thread section 410 and an engagement section 420, as shown in the reference. Figure 10 , Figure 10 for Figure 7 A partial structural diagram of section D shows that the internal thread section 410 is located near the head end of the tail sleeve 400, and the tail sleeve 400 is threadedly connected to the second housing 300 through the internal thread section 410. The engagement section 420 is located at the tail end of the internal thread section, and the inner diameter of the engagement section 420 gradually decreases from the head to the tail. Specifically, the internal thread section 410 is located in the inner wall region near the head end of the tail sleeve 400. This section is machined with internal threads to mate with the corresponding external threads on the outer wall of the tail end of the second housing 300. Thus, the axial advance position can be precisely controlled by rotating the tail sleeve 400. The engagement section 420 is located at the tail end of the internal thread section 410 (i.e., closer to the tail end of the tail sleeve 400). The key feature of this section is that its inner diameter gradually decreases from the head to the tail, forming a tapered hole structure.

[0059] When the tail sleeve 400 is threaded onto the second housing 300, the tail sleeve 400 moves axially toward the connector body. As the insertion depth increases, the tapered inner wall of the engagement section 420 gradually contacts the outer surface of the tail end of the second housing 300 and begins to apply radially inward compressive force. Since the inner diameter of the engagement section 420 is gradually decreasing, the radial clamping force (i.e., the biting force) of the engagement section 420 on the second housing 300 will gradually increase. In other words, the biting force of the engagement section 420 on the second housing 300 gradually increases.

[0060] In this embodiment, the linkage mechanism of threaded advancement and conical extrusion ensures a positive correlation between the clamping force and the tightening angle, achieving stepless and linear adjustment of the 500° clamping force on the optical cable. This ensures sufficient tensile strength while preventing damage to the optical cable due to over-tightening, accommodating optical cables of different specifications. Furthermore, the progressively increasing clamping force ensures that the optical cable is clamped evenly and reliably, forming a mechanical lock that effectively resists severe axial pulling, improving the reliability of the connector during conduit installation or use.

[0061] The fiber optic connector assembly and conduit fiber optic connector disclosed in the embodiments of the present invention bring the following significant advantages: 1. Significantly reduce the radial dimension of the tube. By inserting the head of the adhesive-resistant flexible hose into the tailstock, the internal space of the tailstock is fully utilized, avoiding the radial dimension occupied by the traditional external hose wrapping method. The internal insertion layout of this invention minimizes the overall outer diameter of the connector, thereby expanding its application scenarios.

[0062] During glue injection, it can not only form an effective sealing barrier to prevent glue from contaminating internal moving parts, but also securely connect the glue-proof hose to the tail shank, thus achieving a tight fixation between the two and preventing the glue-proof hose from falling off due to its plug-in design.

[0063] 2. Improve connection stability and structural reliability The engagement mechanism between the snap-fit ​​part and the through groove, combined with the pre-tightening contact of the elastic element, forms a stable rigid connection. When the connector is fitted onto the tail shank, the snap-fit ​​part engages in the through groove, ensuring secure axial and radial fixation and reducing the risk of displacement of the component due to vibration or pulling during pipe insertion. Furthermore, the use of adhesive injection can further secure the adhesive-resistant hose to the tail shank, achieving double fixation.

[0064] Furthermore, the elastic element provides preload between the tailstock and the connector, forming a buffer system capable of absorbing external impact energy. This design reduces structural fatigue and extends the connector's service life. 3. Simplify assembly process and improve production efficiency. The modular design allows for quick assembly of the adhesive-resistant hose, tailstock, connectors, and elastic components. The snap-fit ​​mechanism and through-slot require no special tools or complex operations, reducing assembly difficulty and time, and improving assembly efficiency.

[0065] In summary, the fiber optic connector assembly and conduit-mounted fiber optic connector disclosed in this invention, through integrated layout, allow for efficient cooperation of each component within a limited space, avoiding the redundancy caused by the stacking of multiple components in traditional methods. This achieves a reduction in the radial dimension of the connector within the conduit while ensuring connection reliability.

[0066] It will be understood by those skilled in the art that the above-described preferred solutions can be freely combined and superimposed without conflict. The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings; for example, two consecutively indicated blocks may actually be executed substantially in parallel, or sometimes in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions. The numbering of each step in this document is for ease of explanation and reference only and is not intended to limit the order of execution. The specific execution order is determined by the technology itself, and those skilled in the art can determine various permissible and reasonable orders based on the technology itself.

[0067] Those skilled in the art will understand that, without conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0068] It should be understood that the above embodiments are merely exemplary and not restrictive. Various obvious or equivalent modifications or substitutions that can be made by those skilled in the art regarding the above details without departing from the basic principles of the present invention will be included within the scope of the claims of the present invention.

Claims

1. A fiber optic connector assembly, characterized in that, include: The components include a rubber-resistant flexible hose (11), a tailstock (12), a connector (13), and an elastic element (14), wherein: The head of the tail (12) is used to fix the connection of the ferrule assembly (100); the outer side wall of the tail of the tail (12) is provided with a protruding snap-fit ​​part (121). The inner diameter of the connector (13) is adapted to the outer diameter of the tailstock (12) so as to at least partially cover the outer side of the tailstock (12) and be pre-tightened by the elastic member (14); the connector (13) is provided with a through groove (131) that penetrates the inner and outer walls. When the connector (13) is covered on the tailstock (12), the snap-fit ​​part (121) snaps into the through groove (131) to connect the connector (13) and the tailstock (12). The adhesive-proof hose (11) is used to accommodate the optical fiber connected to the ferrule assembly (100). The head of the adhesive-proof hose (11) is inserted into the tail of the tail shank (12) to provide adhesive protection during glue injection and to securely connect the adhesive-proof hose (11) and the tail shank (12) with glue.

2. The fiber optic connector assembly as claimed in claim 1, characterized in that, The connector (13) has an annular recess (132) on its outer wall to increase the contact area for abutting and fixing with the outer shell.

3. The fiber optic connector assembly as described in claim 2, characterized in that, The annular recess (132) is positioned closer to the head of the connector (13) relative to the through groove (131).

4. The fiber optic connector assembly as claimed in claim 1, characterized in that, The outer wall of the tail of the connector (13) is provided with several raised lines (133) to cooperate with the fixed pressing ring (15).

5. The fiber optic connector assembly as described in any one of claims 1-4, characterized in that, The head outer wall of the tailstock (12) has an annular protrusion (122), one end of the elastic member (14) abuts against the annular protrusion (122) near one end of the connector (13), and the other end abuts against the head end of the connector (13).

6. The fiber optic connector assembly as claimed in claim 5, characterized in that, The elastic element (14) is directly covered by the housing of the fiber optic connector.

7. The fiber optic connector assembly as described in any one of claims 1-4, characterized in that, The number of the snap-fit ​​parts (121) is at least two; The tail shank (12) has a semi-enclosed opening (120) at its tail end, and the snap-fit ​​part (121) is symmetrically distributed on the outer wall of the semi-enclosed opening (120).

8. The fiber optic connector assembly as described in any one of claims 1-4, characterized in that, The head of the tailstock (12) is provided with a guide structure (124) for guiding the direction of fixing the insert assembly (100) and the tailstock (12).

9. A perforated fiber optic connector, characterized in that, include: The fiber optic connector assembly as described in any one of claims 1-8; A ferrule assembly (100) for accommodating optical fibers; Housing for covering and securing the fiber optic connector assembly and the ferrule assembly (100). A dust cap (16) is used to cover the insert assembly (100), and the head end of the dust cap (16) is provided with a connecting ring (161) for traction by a traction rope.

10. The perforated fiber optic connector as described in claim 9, characterized in that, The outer shell is a split structure, and the outer shell includes: The first outer shell (200) includes a first fixing structure (210) and a second fixing structure (220) disposed at both ends. The first outer shell (200) is fixed to the annular recess (132) on the outer wall of the connector (13) by the first fixing structure (210) and circumferentially surrounds the connector (13). The second outer shell (300) has its first end detachably connected to the second fixing structure (220), and the second outer shell (300) is fixedly connected to the first outer shell (200) to circumferentially surround the optical cable (500).

11. The perforated fiber optic connector as described in claim 10, characterized in that, Also includes: Tail sleeve (400) is connected to the second end of the second housing (300) to secure the second end of the second housing (300) to the optical cable (500).

12. The perforated fiber optic connector as described in claim 11, characterized in that, The tail sleeve (400) includes: An internal thread section (410) is located near the head end of the tail sleeve (400), through which the tail sleeve (400) is threaded to the second housing (300). The engagement segment (420) is located at the tail of the internal thread segment (410), and the inner diameter of the engagement segment (420) gradually decreases from the head to the tail. When the tail sleeve (400) is threaded onto the second housing (300), the engagement force of the engagement segment (420) on the second housing (300) gradually increases.

13. The perforated fiber optic connector as described in any one of claims 10-12, characterized in that, The second outer shell (300) is snapped and fixed to the first outer shell (200).

Images