Compact optical fiber connector

Abstract

The utility model provides a compact optical fiber connector, which comprises a front shell, a rear shell and an insertion core assembly, and is characterized in that the outer wall of the front shell extends along the axial direction to form a positioning plane so as to assist in positioning the direction when the compact optical fiber connector is connected with an adapter; the front end of the rear shell extends into the front shell and is connected with the front shell, and the rear end of the rear shell is clamped with an optical cable and allows an optical fiber in the optical cable to pass through; the insertion core assembly is fixed between the front shell and the rear shell, one end of the insertion core assembly extends out of the front shell to be connected with the adapter, and the other end of the insertion core assembly extends into the rear shell to be connected with the optical fiber. According to the invention, the size can be reduced, the installation difficulty is reduced, and the dustproof and waterproof effects are ensured.

Description

Technical Field

[0001] This application relates to the field of fiber optic connector technology, and in particular to a compact fiber optic connector that is easy to assemble and disassemble with an adapter and occupies little space. Background Technology

[0002] With the increasing demand for high-speed internet in homes, fiber optic access (FTTX), especially fiber-to-the-home (FTTH), is an important direction for technological development. However, to meet the demands of fiber optic access, balancing the reliability of fiber optic connectors with the ease of installation has become a pressing issue. Current technologies use standard connectors to reduce installation difficulty, which are small in size and easy to install and remove, but lack a sealing structure, are not dust and water resistant, and are inconvenient for outdoor use. On the other hand, fiber optic connectors with specific sealing structures are used to ensure a good seal, but these typically use threads to connect to the adapter, often requiring proper rotation to achieve the correct fit, increasing installation complexity.

[0003] Therefore, the existing technology needs to be further improved and enhanced. Utility Model Content

[0004] In view of this, this application proposes a compact fiber optic connector to solve the problems in the prior art of how to reduce installation difficulty, reduce footprint, and ensure sealing, dustproof and waterproof properties.

[0005] To address the aforementioned technical problems, this application provides a compact fiber optic connector, wherein the compact fiber optic connector comprises:

[0006] The front housing has an outer wall that extends axially to form a positioning plane to assist in positioning orientation when the compact fiber optic connector is connected to the adapter.

[0007] The rear shell has its front end extending into and connected to the front shell, and its rear end holding the optical cable and allowing the optical fiber inside the optical cable to pass through.

[0008] A ferrule assembly is fixed between the front housing and the rear housing, with one end of the ferrule assembly extending from the front housing to connect with the adapter, and the other end of the ferrule assembly extending into the rear housing to connect with the optical fiber.

[0009] In one embodiment, the front shell includes:

[0010] The front end of the front housing is matched and engaged with the adapter to realize the connection between the compact fiber optic connector and the adapter. The positioning plane is disposed on one side of the front end of the front housing.

[0011] The rear end of the front shell matches the front end of the rear shell, so that the front end of the rear shell extends into the rear end of the front shell to achieve a detachable connection between the rear shell and the front shell.

[0012] In one embodiment, the front end of the front shell is provided with an annular locking protrusion. After the front shell and the rear shell are detachably connected, the insert assembly is fixed between the annular locking protrusion and the front end of the rear shell.

[0013] In one embodiment, at least one latching protrusion is provided on the side wall surrounding the front end of the front shell to achieve matching and locking between the front end of the front shell and the adapter.

[0014] In one embodiment, the rear end of the rear shell includes:

[0015] A ring groove is provided around the outer wall of the rear end of the rear shell, and a waterproof ring is sleeved inside the ring groove;

[0016] A snap-fit ​​portion is provided at the rear end of the rear housing away from the front end of the rear housing to achieve snap-fit ​​with the optical cable.

[0017] In one embodiment, the compact fiber optic connector further includes:

[0018] A crimping sleeve is provided, with one end of the crimping sleeve fitted and fixed on the snap-fit ​​part, and the other end of the crimping sleeve clamped onto the optical cable to ensure a fixed connection between the optical cable and the compact fiber optic connector.

[0019] In one embodiment, the compact fiber optic connector further includes:

[0020] A first dust cover is detachably connected to the rear shell and covers the front and rear shells. The inner wall of the first dust cover matches the waterproof ring to prevent dust or water from entering the compact fiber optic connector after the first dust cover is connected to the rear shell.

[0021] In one embodiment, the first dust cover is provided with a push-pull through hole to facilitate the movement of the compact fiber optic connector and the removal and installation of the first dust cover.

[0022] In one embodiment, the ferrule assembly includes:

[0023] A ferrule, one end of which extends from the front housing to connect with the adapter, and the other end of which extends into the rear housing to connect with the optical fiber, the optical fiber being connected to the adapter via the ferrule;

[0024] A boss is provided around the insert, and one side of the boss abuts against the front housing;

[0025] An elastic element is provided, with one end abutting against the other side of the boss and the other end abutting against the rear shell, to ensure that the ferrule assembly is fixed between the front shell and the rear shell and to prevent the ferrule from being damaged by collision with the adapter.

[0026] In one embodiment, the compact fiber optic connector further includes:

[0027] The second dust cover is provided at the end of the ferrule assembly that extends out of the front shell, and is detachably sleeved on the ferrule assembly to prevent dust from falling into the ferrule assembly.

[0028] This application provides a compact fiber optic connector, including a front shell, a rear shell, and a ferrule assembly. The outer wall of the front shell extends axially to form a positioning plane, assisting in positioning the compact fiber optic connector when connected to an adapter. The front end of the rear shell extends into and connects to the front shell, while the rear end of the rear shell holds the optical cable and allows the optical fiber within the cable to pass through. The ferrule assembly is fixed between the front and rear shells, with one end extending from the front shell to connect to the adapter, and the other end extending into the rear shell to connect to the optical fiber. This application reduces the footprint by using only the front and rear shells to form the fiber optic connector; the positioning plane on the front shell reduces installation difficulty; and the ferrule assembly is fixed inside the front and rear shells, preventing dust or water droplets from entering the compact fiber optic connector, thus simultaneously achieving reduced size, easier installation, and dust and water resistance. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional schematic diagram of a compact fiber optic connector according to one embodiment of this application.

[0031] Figure 2 This is a perspective view of a compact fiber optic connector after the first and second dust covers have been removed, according to one embodiment of this application.

[0032] Figure 3 This is a cross-sectional schematic diagram of a compact fiber optic connector according to one embodiment of this application.

[0033] Figure 4 This is an exploded view of a compact fiber optic connector in one embodiment of this application.

[0034] Figure 5 This is an exploded view of a compact fiber optic connector from another angle, representing one embodiment of this application.

[0035] Figure 6 This is a perspective view of the front shell of a compact fiber optic connector in one embodiment of this application.

[0036] Figure 7 This is a perspective view of the front housing of a compact fiber optic connector from another angle in one embodiment of this application.

[0037] Figure 8 This is a perspective view of a compact fiber optic connector after the waterproof ring has been removed from the rear shell, according to one embodiment of this application.

[0038] Figure 9 This is a perspective view of a compact fiber optic connector with a waterproof ring installed on the rear shell, taken from another angle, according to one embodiment of this application.

[0039] Figure 10 This is a perspective view of a compact fiber optic connector after the first and second dust covers have been removed, according to another embodiment of this application.

[0040] Figure 11 This is a cross-sectional schematic diagram of a compact fiber optic connector according to another embodiment of this application.

[0041] Figure 12 This is an exploded view of a compact fiber optic connector in another embodiment of this application.

[0042] Figure 13 This is a perspective view of the front shell of a compact fiber optic connector in another embodiment of this application.

[0043] Figure 14 This is a perspective view of the compact fiber optic connector with a waterproof ring installed on the rear shell, according to another embodiment of this application. Detailed Implementation

[0044] This utility model provides a compact fiber optic connector. To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the following provides a more detailed description of this utility model. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit this utility model.

[0045] It should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation or must be constructed in a specific orientation. They should not be construed as limitations on this utility model.

[0046] Furthermore, unless otherwise specified in the text, "a" and "described" can refer to a single or multiple entities. If the embodiments of this utility model involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" can explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0047] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0048] With the increasing demand for high-speed internet in homes, the need for reliable and easy-to-install fiber optic connectors is becoming increasingly prominent. Standard connectors are widely used for fiber optic access, but their small size and lack of sealing make them unsuitable for outdoor use. H-Plug connectors, on the other hand, are larger and offer better sealing, designed specifically for outdoor use. However, these connectors use a threaded connection to mate with adapters or sockets. This connection requires proper rotation to ensure a proper seal and stable optical connection, making installation difficult and unsuitable for dense multi-fiber installations.

[0049] To address the challenges of simultaneously reducing installation difficulty, minimizing footprint, and ensuring sealing, dustproofing, and waterproofing in existing technologies, this application provides a compact fiber optic connector. This compact fiber optic connector features a fast and reliable mating mechanism and a smaller size, thereby shortening installation time and reducing space requirements, allowing for the installation of more connectors in a limited space. Simultaneously, the ferrule assembly is sealed inside the front and rear housings, ensuring waterproofing and dustproofing.

[0050] Specifically, such as Figure 2 and Figure 3 As shown, the compact fiber optic connector includes a front shell 100, a rear shell 200, and a ferrule assembly 300. The outer wall of the front shell 100 extends axially to form a positioning plane 130 to assist in positioning direction when the compact fiber optic connector is connected to an adapter. The rear shell front end 210 of the rear shell 200 extends into and is connected to the front shell 100. Optionally, the rear shell front end 210 extends into and is detachably connected to the front shell 100, or the rear shell front end 210 extends into and is locked into the front shell 100 and is non-detachably connected, or the rear shell front end 210 extends into and is integrally formed with the front shell 100. Furthermore, the rear end 220 of the rear shell 200 is engaged with the optical cable 700, allowing the optical fiber 710 within the optical cable 700 to pass through; the ferrule assembly 300 is fixed between the front shell 100 and the rear shell 200, one end of the ferrule assembly 300 extends from the front shell 100 to connect with the adapter, and the other end of the ferrule assembly 300 extends into the rear shell 200 to connect with the optical fiber 710. This application reduces the footprint by reducing structural components, using only the front and rear shells to form the fiber optic connector; a positioning plane is provided on the front shell to reduce installation difficulty; finally, the ferrule assembly is fixed inside the front and rear shells, and dust is prevented from entering the compact fiber optic connector by the first dust cover 500 and the second dust cover 600, and water droplets are prevented from entering the compact fiber optic connector by the waterproof ring 240, thereby simultaneously achieving the effects of reducing size, reducing installation difficulty, and ensuring dust and water resistance.

[0051] Furthermore, such as Figure 3 and Figure 4As shown, the front shell 100 includes a front end 110 and a rear end 120. The front end 110 is matched and engaged with the adapter to establish a connection between the compact fiber optic connector and the adapter. The positioning plane 130 is disposed on one side of the front end 110. The rear end 120 is matched with the front end 210 of the rear shell 200, allowing the front end 210 to extend into the rear end 120, thus achieving a detachable connection between the rear shell 200 and the front shell 100. By using the rear end 120 to sleeve the front end 110 and detachably connect them, a fixed connection between the front shell 100 and the rear shell 200 is achieved, ensuring a compact structure and reducing installation difficulty. In another embodiment, the rear end 120 is sleeved on the front end 110 and integrally formed, thereby achieving a fixed connection between the front shell 100 and the rear shell 200.

[0052] Furthermore, such as Figure 3 As shown, the front end 110 of the front shell has an annular locking protrusion 150. After the front shell 100 and the rear shell 200 are detachably connected, the ferrule assembly 300 is fixed between the annular locking protrusion 150 and the front end 210 of the rear shell. The annular locking protrusion 150 cooperates with the front end 210 of the rear shell to hold and fix the ferrule assembly 300, thereby ensuring that the ferrule assembly 300 is fixed between the front shell 100 and the rear shell 200.

[0053] Furthermore, such as Figure 6 and Figure 7 As shown, at least one latching protrusion 140 is provided on the side wall surrounding the front end 110 of the front shell to achieve matching and latching between the front end 110 of the front shell and the adapter.

[0054] Furthermore, such as Figure 8 and Figure 9As shown, the rear end 220 of the rear housing includes an annular groove 230 and a snap-fit ​​portion 250. The annular groove 230 surrounds the outer wall of the rear end 220, and a waterproof ring 240 is fitted inside the annular groove 230. The snap-fit ​​portion 250 is located at the end of the rear end 220 away from the front end 210 of the rear housing to achieve snap-fit ​​with the optical cable 700. The waterproof ring 240 within the annular groove 230 provides waterproofing for the compact fiber optic connector, and the snap-fit ​​portion 250, through its connection with the optical cable 700, enhances the sealing performance of the compact fiber optic connector. Specifically, when the compact fiber optic connector is inserted into the adapter, the waterproof ring 240 abuts against the adapter housing, thus providing waterproofing for the compact fiber optic connector. When the compact fiber optic connector is removed from the adapter and no longer in use, a dust cover covers the connector, allowing the waterproof ring 240 and the dust cover to work together to provide waterproof and dustproof protection for the connector.

[0055] Furthermore, such as Figure 4 and Figure 5 As shown, the compact fiber optic connector also includes a crimp sleeve 400. One end of the crimp sleeve 400 is fitted and fixed onto the snap-fit ​​portion 250, and the other end of the crimp sleeve 400 is clamped onto the optical cable 700 to ensure a fixed connection between the optical cable 700 and the compact fiber optic connector. By tightly wrapping the optical cable 700 with the crimp sleeve 400, the reinforcing member (e.g., aramid fiber) of the optical cable 700 is fixed inside the rear shell 200, thereby achieving tensile strength and waterproofing, and ensuring a stable connection of the optical fiber 710.

[0056] Furthermore, such as Figure 1 and Figure 4 As shown, the compact fiber optic connector also includes a first dust cover 500, which is detachably connected to the rear shell 200 and covers the front shell 100 and the rear shell 200. Figure 3 As shown, the inner wall of the first dust cover 500 matches the waterproof ring 240, so that after the first dust cover 500 is connected to the rear shell 200, the cooperation between the first dust cover 500 and the waterproof ring 240 prevents dust or water from entering the compact fiber optic connector. The cooperation between the first dust cover 500 and the waterproof ring 240 improves the airtightness of the compact fiber optic connector.

[0057] Furthermore, such as Figure 1 and Figure 5 As shown, the first dust cover 500 is provided with a push-pull through hole 510 to facilitate the movement of the compact fiber optic connector and the removal and installation of the first dust cover 500.

[0058] Furthermore, such as Figure 4 and Figure 5 As shown, the ferrule assembly 300 includes a ferrule 310, a boss 320, and an elastic member 330. One end of the ferrule 310 extends from the front housing 100 to connect with the adapter, and the other end of the ferrule 310 extends into the rear housing 200 to connect with the optical fiber 710. The optical fiber 710 is connected to the adapter via the ferrule 310. The boss 320 is arranged around the ferrule 310, and one side of the boss 320 abuts against the front housing 100. One end of the elastic member 330 abuts against the other side of the boss 320, and the other end of the elastic member 330 abuts against the rear housing 200, thereby ensuring that the ferrule assembly 300 is fixed between the front housing 100 and the rear housing 200, and preventing the ferrule 310 from being damaged by collision with the adapter. By setting the elastic element 330, it is ensured that the plug 310 is always provided with a force extending towards the adapter, thereby ensuring that the plug 310 extends out of the front housing 100 and connects to the adapter, while avoiding rigid collisions that could damage the plug 310 during the insertion process.

[0059] Furthermore, such as Figure 3 and Figure 4 As shown, the compact fiber optic connector also includes a second dust cover 600. The second dust cover 600 is disposed at the end of the ferrule assembly 300 that extends out of the front housing 100, and is detachably sleeved on the ferrule assembly 300 to prevent dust from falling into the ferrule assembly 300. By additionally providing the second dust cover 600, the ferrule assembly 300 is further sealed, thereby ensuring the dustproof effect of the compact fiber optic connector.

[0060] This application reduces the size of the fiber optic connector by using only a front shell 100 and a rear shell 200 to form the connector. A positioning plane 130 is provided on the front shell 100 to reduce the difficulty of installation. Finally, the ferrule assembly 300 is fixed inside the front shell 100 and the rear shell 200. The first dust cover 500 and the second dust cover 600 are used to prevent dust from entering the compact fiber optic connector, and the waterproof ring 240 is used to prevent water droplets from entering the compact fiber optic connector. Thus, the effects of reducing size, reducing installation difficulty, and ensuring dust and water resistance are achieved simultaneously.

[0061] The following describes an embodiment of this application with reference to the accompanying drawings:

[0062] In this embodiment, as Figure 3As shown, this application discloses a compact fiber optic connector, including a front shell 100, a rear shell 200, a ferrule assembly 300, a crimp sleeve 400, a first dust cover 500, and a second dust cover 600.

[0063] Specifically, such as Figure 3 and Figure 6 As shown, the front shell 100 is a hollow shell structure with a front end 110 and a rear end 120. The optical fiber 710 in the optical cable 700 passes through the rear shell 200 and enters the front shell 100, then passes through the front shell 100 to connect with the adapter. In this embodiment, the front shell 100 and the rear shell 200 are detachably connected. Further, the front end 110 is designed to match the adapter. In this embodiment, the front end 110 has an outer square and inner circle structure that matches a standard adapter, approximating the connector structure of a standard connector. The rear end 120 of the front shell is provided with a first retaining structure 160, so that the rear end 120 of the front shell can be retained and connected to the rear shell 200 through the first retaining structure 160. In this embodiment, the first retaining structure 160 is an internal thread, which engages with the corresponding external thread on the rear shell 200 to achieve a detachable connection between the front shell 100 and the rear shell 200. Optionally, the first retaining structure 160 may also be other retaining structures, such as tenon and mortise structures, latching protrusion structures, and spiral snap-fit ​​structures, to cooperate with the corresponding structures on the rear shell 200 to achieve a detachable connection between the front shell 100 and the rear shell 200.

[0064] Furthermore, such as Figure 4 and Figure 5 As shown, in this embodiment, the front end 110 of the front shell extends axially to form a positioning plane 130 to assist in positioning the compact fiber optic connector relative to the adapter. Optionally, the positioning plane 130 corresponds to the "upper surface" of the adapter. When installing the compact fiber optic connector and the adapter, rotating the positioning plane 130 upwards directly achieves the corresponding connection between the compact fiber optic connector and the adapter, reducing installation difficulty and facilitating the installation of multiple fiber optic connectors in confined spaces. Further, as... Figure 6 and Figure 7 As shown, in this embodiment, at least one locking protrusion 140 is provided on both sides of the positioning plane 130. The locking protrusion 140 is provided away from the side wall of the front shell 100 to lock with the adapter when the compact fiber optic connector is connected to the adapter, thereby realizing the fixed connection between the compact fiber optic connector and the adapter and ensuring the connection between the fiber optic cable 710 and the adapter.

[0065] Furthermore, such as Figure 3As shown, in this embodiment, the front end 110 of the front shell is provided with an annular locking protrusion 150. The annular locking protrusion 150 forms a through hole with a smaller size in the middle. After the front shell 100 and the rear shell 200 are fixedly connected, the annular locking protrusion 150 cooperates with the rear shell 200 to fix the ferrule assembly 300 between the front shell 100 and the rear shell 200.

[0066] Specifically, such as Figure 3 and Figure 8 As shown, the rear shell 200 is a hollow shell structure with a rear shell front end 210 and a rear shell rear end 220. The rear shell front end 210 is detachably connected to the front shell 100, and the rear shell rear end 220 is fixedly connected to the optical cable 700, so as to ensure that the optical fiber 710 passes through the rear shell rear end 220 and the rear shell front end 210 in sequence to enter the front shell 100, and is connected to the adapter through the front shell 100. Specifically, in this embodiment, the rear shell front end 210 and the rear shell rear end 220 are hollow cylindrical structures, and the diameter of the rear shell front end 210 is smaller than the diameter of the rear shell rear end 220, so as to ensure that the rear shell front end 210 can extend into the front shell 100 through the front shell rear end 120, and the rear shell rear end 220 abuts against the front shell rear end 120.

[0067] Furthermore, such as Figure 8 and Figure 9 As shown, the rear shell front end 210 has a second retaining structure 260 at one end near the rear shell rear end 220. After the rear shell front end 210 extends into the front shell 100, the second retaining structure 260 cooperates with the first retaining structure 160 to achieve a detachable connection between the front shell 100 and the rear shell 200. In this embodiment, the second retaining structure 260 is an external thread, which cooperates with the first retaining structure 160, which is an internal thread, to achieve a detachable connection between the front shell 100 and the rear shell 200. Optionally, the second retaining structure 260 can also be other retaining structures, such as tenon and mortise structures, latching protrusion structures, and spiral snap-fit ​​structures, to cooperate with the first retaining structure 160 to achieve a detachable connection between the front shell 100 and the rear shell 200.

[0068] Furthermore, such as Figure 8 and Figure 9 As shown, in this embodiment, the rear end 220 of the rear shell near the front end 210 of the rear shell has at least one annular groove 230 surrounding its outer wall to accommodate a waterproof ring 240. Figure 2 and Figure 3As shown, the waterproof ring 240, after being fitted into the annular groove 230, protrudes from the surface of the rear end 220 of the rear housing. That is, after the waterproof ring 240 is fitted onto the rear housing 200, the height of the waterproof ring 240 is greater than the height of the annular groove 230, causing the waterproof ring 240 to protrude relative to the annular groove 230. Thus, when the compact fiber optic connector is not in use, the waterproof ring 240 can cooperate with the first dust cover 500 to seal the compact fiber optic connector, improving its waterproof and dustproof performance. When the compact fiber optic connector is inserted into the adapter, the waterproof ring 240 can also abut against the adapter housing to provide waterproof protection for the compact fiber optic connector.

[0069] Furthermore, such as Figure 4 and Figure 5 As shown, in this embodiment, the rear end 220 of the rear shell has a snap-fit ​​portion 250 at the end away from the front end 210 of the rear shell. The snap-fit ​​portion 250 includes several annular protrusions of different heights for fixed connection with the crimp sleeve 400. Specifically, one end of the crimp sleeve 400 is fitted onto the snap-fit ​​portion 250 and pressed to fix it, and the other end of the crimp sleeve 400 is fitted onto the optical cable 700 and pressed to fix it, thereby realizing the fixed connection between the optical cable 700 and the rear shell 200, and ensuring that the optical fiber 710 can smoothly pass through the rear shell 200 and the front shell 100 to connect with the adapter. The crimp sleeve 400 can fix the reinforcing member (aramid fiber) of the optical cable 700 at the rear end 220 of the rear shell 200 by mechanical crimping, ensuring mechanical strength and sealing, preventing tensile force from affecting the connection between the optical fiber 710 and the adapter, reducing the risk during installation, improving installation stability and ensuring the sealing effect of the compact optical fiber connector.

[0070] Furthermore, such as Figure 8 and Figure 9 As shown, in this embodiment, the rear end 220 of the rear shell has a third retaining structure 270 on its outer side wall to cooperate with the first dust cover 500 to achieve a detachable connection between the first dust cover 500 and the rear shell 200. In this embodiment, the third retaining structure 270 is an external thread to cooperate with the corresponding internal thread structure on the first dust cover 500 to achieve a detachable connection between the first dust cover 500 and the rear shell 200. Optionally, the third retaining structure 270 can also be other retaining structures, such as tenon and mortise structures, latching protrusion structures, and spiral snap-fit ​​structures, to cooperate with the corresponding structure on the first dust cover 500 to achieve a detachable connection between the first dust cover 500 and the rear shell 200.

[0071] Specifically, such as Figure 4 and Figure 5As shown, the ferrule assembly 300 includes a ferrule 310, a boss 320, and an elastic element 330. Further, one end of the ferrule 310 extends from the front end 110 of the front housing to connect with the adapter, and the other end of the ferrule 310 extends into the front end 210 of the rear housing and connects with the optical fiber 710. An axial through-hole is formed inside the ferrule 310 to allow the optical fiber 710 to pass through and connect with the adapter, thereby realizing the function of optical fiber connection. Further, in this embodiment, the boss 320 is arranged around the ferrule 310 and positioned at a relative midpoint of the ferrule 310. After the front housing 100 and the rear housing 200 are assembled and connected, one side of the boss 320 abuts against the annular retaining protrusion 150 in the front housing 100, and the other side of the boss 320 abuts against the front end 210 of the rear housing through the elastic element 330, thereby fixing the ferrule assembly 300 between the front housing 100 and the rear housing 200. By providing the elastic element 330, which abuts against the annular latch 150 and the front end 210 of the rear housing, a force is always provided to the ferrule 310 to extend towards the front end 110 of the front housing, ensuring that the ferrule 310 extends from the front housing 100 and connects to the adapter. Simultaneously, the elastic element 330 ensures that the ferrule 310 is elastically connected within the compact fiber optic connector, preventing damage caused by rigid collisions during assembly or when connecting the compact fiber optic connector to the adapter. Optionally, the elastic element 330 is a spring.

[0072] Specifically, such as Figure 1 and Figure 4 As shown, in this embodiment, the first dust cover 500 is a cylindrical structure with a round bottom, which, after being snapped together with the rear shell 200, wraps around the front shell 100 and the rear shell 200 to achieve a seal for the compact fiber optic connector. Specifically, the inner diameter of the first dust cover 500 is slightly smaller than the outer diameter of the waterproof ring 240, so that after the first dust cover 500 is snapped together with the rear shell 200, the position of the waterproof ring 240 on the rear shell 200 is sealed to the top of the front shell 100, thereby improving the sealing performance of the compact fiber optic connector. Further, as... Figure 5As shown, in this embodiment, the first dust cover 500 is provided with a fourth retaining structure 520 corresponding to the third retaining structure 270 of the rear shell 200, so as to realize the detachable connection between the first dust cover 500 and the rear shell 200. In this embodiment, the fourth retaining structure 520 is internally threaded, so as to cooperate with the externally threaded third retaining structure 270 on the rear shell 200 to fix the first dust cover 500. Optionally, the fourth retaining structure 520 can also be other retaining structures, such as tenon and mortise structures, latching protrusion structures, and spiral snap-fit ​​structures, etc., to cooperate with the corresponding third retaining structure 270 on the rear shell 200 to realize the detachable connection between the first dust cover 500 and the rear shell 200.

[0073] Furthermore, such as Figure 4 As shown, the first dust cover 500 has a push-pull through hole 510 at the top. The user can install or remove the first dust cover 500 through the push-pull through hole 510. After the first dust cover 500 is connected to the rear shell 200, the compact fiber optic connector can be moved through the push-pull through hole 510.

[0074] Furthermore, such as Figure 3 and Figure 4 As shown, in this embodiment, the second dust cover 600 is provided corresponding to the end of the insert 310 that extends out of the front housing 100, and the outer diameter of the second dust cover 600 is smaller than the inner diameter of the front end 110 of the front housing, while the inner diameter of the second dust cover 600 is larger than the outer diameter of the end of the insert 310 that extends out of the front housing 100. Therefore, in this embodiment, the second dust cover 600 can be sleeved on the insert 310 and extended into the front housing 100 to improve the waterproof and dustproof effect of the insert assembly 300. Optionally, the second dust cover 600 has an annular protrusion at the end away from the insert 310 to facilitate the user's installation or removal of the second dust cover 600.

[0075] In this way, by setting a front shell 100, a rear shell 200, a ferrule assembly 300, a crimp sleeve 400, a first dust cover 500, a second dust cover 600, and a waterproof ring 240 sleeved on the rear shell 200, this application achieves the overall structure of the compact fiber optic connector with a simple structure, while ensuring the sealing effect of the ferrule assembly 300 in the compact fiber optic connector. This reduces the installation difficulty and ensures waterproof and dustproof functions, effectively solving the technical problem in the prior art that it is impossible to simultaneously reduce the size, reduce the installation difficulty, and ensure dustproof and waterproof functions.

[0076] In another embodiment, the front shell and the rear shell of the compact fiber optic connector described in this application are non-detachably connected. Specifically, as... Figure 12As shown, the compact fiber optic connector includes a front housing 100, a rear housing 200, a ferrule assembly 300, a crimp sleeve 400, a first dust cover 500, and a second dust cover 600. Wherein, as... Figure 10 and Figure 11 As shown, the structure of the compact fiber optic connector in this embodiment is similar to that of the previous embodiment, but the connection method of the front shell 100 and the rear shell 200 is designed differently, so that the front shell 100 and the rear shell 200 are non-detachable.

[0077] Specifically, such as Figure 12 and Figure 13 As shown, the front shell 100 is a hollow shell structure with a front end 110 and a rear end 120. The optical fiber 710 in the optical cable 700 passes through the rear shell 200 and enters the front shell 100, then passes through the front shell 100 to connect with the adapter. In this embodiment, the front shell 100 and the rear shell 200 are non-detachably connected. Further, the front end 110 is designed to match the adapter. In this embodiment, the front end 110 has an outer square and inner circle structure that matches a standard adapter, approximating the connector structure of a standard connector. The rear end 120 of the front shell is provided with a first retaining structure 160, so that the rear end 120 of the front shell can be retainingly connected to the rear shell 200 through the first retaining structure 160. In this embodiment, the first retaining structure 160 is a through hole penetrating the side wall of the front shell 100, which cooperates with the corresponding snap-fit ​​structure on the rear shell 200 to achieve a non-detachable connection between the front shell 100 and the rear shell 200. Optionally, the first holding structure 160 may also be other holding structures, such as tenon and mortise structures or locking structures, to cooperate with the corresponding structure on the rear shell 200 to achieve a non-detachable connection between the front shell 100 and the rear shell 200.

[0078] Specifically, such as Figure 12 and Figure 14 As shown, the rear shell 200 is a hollow shell structure with a front end 210 and a rear end 220. The front end 210 is non-detachably connected to the front shell 100, and the rear end 220 is fixedly connected to the optical cable 700, ensuring that the optical fiber 710 passes sequentially through the rear end 220 and the front end 210 into the front shell 100, and connects to the adapter through the front shell 100. Further, as... Figure 11 and Figure 14As shown, the front end 210 of the rear shell has a second retaining structure 260 at one end near the rear end 220 of the rear shell. After the front end 210 of the rear shell extends into the front shell 100, the second retaining structure 260 cooperates with the first retaining structure 160 to achieve a non-detachable connection between the front shell 100 and the rear shell 200. In this embodiment, the second retaining structure 260 is a retaining block that protrudes perpendicularly to the rear shell 200. After the front end 210 of the rear shell is inserted into the front shell 100, the second retaining structure 260 extends out from the first retaining structure 160 that penetrates the front shell 100 and retains with the first retaining structure 160, thereby achieving a non-detachable connection between the front shell 100 and the rear shell 200. Optionally, the second retaining structure 260 can also be other retaining structures, such as tenon and mortise structures or locking structures, to cooperate with the first retaining structure 160 to achieve a non-detachable connection between the front shell 100 and the rear shell 200.

[0079] Thus, in this embodiment, as Figure 10 and Figure 11 As shown, after the front shell 100 and the rear shell 200 are connected, the first retaining structure 160 and the second retaining structure 260 retain and fix them, thereby realizing the non-removable connection between the front shell 100 and the rear shell 200. At the same time, combined with the first dust cover 500, the second dust cover 600 and the waterproof ring 240 sleeved on the rear shell 200, the sealing effect of the ferrule assembly 300 in the compact fiber optic connector is also guaranteed. This reduces the installation difficulty and ensures the waterproof and dustproof function, effectively solving the technical problem in the prior art that it is impossible to simultaneously reduce the size, reduce the installation difficulty and ensure the dustproof and waterproof function.

[0080] In summary, this application provides a compact fiber optic connector, including a front shell, a rear shell, and a ferrule assembly. The outer wall of the front shell extends axially to form a positioning plane, assisting in positioning when the compact fiber optic connector is connected to an adapter. The front end of the rear shell extends into the front shell and is detachably connected to it. The rear end of the rear shell holds the optical cable and allows the optical fiber within the cable to pass through. The ferrule assembly is fixed between the front and rear shells, with one end extending from the front shell to connect to the adapter, and the other end extending into the rear shell to connect to the optical fiber. This application reduces the footprint by using only the front and rear shells to form the fiber optic connector; the positioning plane on the front shell reduces installation difficulty; and the ferrule assembly is fixed inside the front and rear shells, preventing dust or water droplets from entering the compact fiber optic connector, thus simultaneously achieving reduced size, easier installation, and dust and water resistance.

[0081] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A compact fiber optic connector, characterized in that, include: The front housing has an outer wall that extends axially to form a positioning plane to assist in positioning orientation when the compact fiber optic connector is connected to the adapter. The rear shell has its front end extending into and connected to the front shell, and its rear end holding the optical cable and allowing the optical fiber inside the optical cable to pass through. A ferrule assembly is fixed between the front housing and the rear housing, with one end of the ferrule assembly extending from the front housing to connect with the adapter, and the other end of the ferrule assembly extending into the rear housing to connect with the optical fiber.

2. A compact fiber optic connector according to claim 1, characterized in that, The front shell includes: The front end of the front housing is matched and engaged with the adapter to realize the connection between the compact fiber optic connector and the adapter. The positioning plane is disposed on one side of the front end of the front housing. The rear end of the front shell matches the front end of the rear shell, so that the front end of the rear shell extends into the rear end of the front shell to achieve a detachable connection between the rear shell and the front shell.

3. A compact fiber optic connector according to claim 2, characterized in that, The front end of the front shell is provided with an annular locking protrusion. After the front shell and the rear shell are detachably connected, the insert assembly is fixed between the annular locking protrusion and the front end of the rear shell.

4. A compact fiber optic connector according to claim 2, characterized in that, At least one latching protrusion is provided on the side wall surrounding the front end of the front shell to achieve matching and locking between the front end of the front shell and the adapter.

5. A compact fiber optic connector according to claim 1, characterized in that, The rear end of the rear shell includes: A ring groove is provided around the outer wall of the rear end of the rear shell, and a waterproof ring is sleeved inside the ring groove; A snap-fit ​​portion is provided at the rear end of the rear housing away from the front end of the rear housing to achieve snap-fit ​​with the optical cable.

6. The compact fiber optic connector according to claim 5, characterized in that, The compact fiber optic connector also includes: A crimping sleeve is provided, with one end of the crimping sleeve fitted and fixed on the snap-fit ​​part, and the other end of the crimping sleeve clamped onto the optical cable to ensure a fixed connection between the optical cable and the compact fiber optic connector.

7. The compact fiber optic connector according to claim 5, characterized in that, The compact fiber optic connector also includes: A first dust cover is detachably connected to the rear shell and covers the front and rear shells. The inner wall of the first dust cover matches the waterproof ring to prevent dust or water from entering the compact fiber optic connector after the first dust cover is connected to the rear shell.

8. The compact fiber optic connector according to claim 7, characterized in that, The first dust cover is provided with a push-pull through hole to facilitate the movement of the compact fiber optic connector and the removal and installation of the first dust cover.

9. The compact fiber optic connector according to claim 1, characterized in that, The ferrule assembly includes: A ferrule, one end of which extends from the front housing to connect with the adapter, and the other end of which extends into the rear housing to connect with the optical fiber, the optical fiber being connected to the adapter via the ferrule; A boss is provided around the insert, and one side of the boss abuts against the front housing; An elastic element is provided, with one end abutting against the other side of the boss and the other end abutting against the rear shell, to ensure that the ferrule assembly is fixed between the front shell and the rear shell and to prevent the ferrule from being damaged by collision with the adapter.

10. The compact fiber optic connector according to claim 1, characterized in that, The compact fiber optic connector also includes: The second dust cover is provided at the end of the insert assembly that extends out of the front shell and is detachably sleeved on the insert assembly to prevent dust from falling into the insert assembly.

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