A fiber optic adapter and fiber optic cassette assembly

Abstract

The utility model discloses a kind of optical fiber adapter and optical fiber box assembly, for connecting outdoor optical fiber connector and indoor optical fiber connector respectively, wherein, optical fiber adapter includes first end and second end being arranged through inside, the inside of optical fiber adapter is also provided with annular platform, clamping portion and buckle assembly, wherein, annular platform separates the inside of optical fiber adapter into first connecting cavity and second connecting cavity, first connecting cavity and second connecting cavity are communicated by the opening being set on annular platform;Buckle assembly and clamping portion are clamped, buckle assembly can be detachably set in the inside of optical fiber adapter. By independently designing buckle assembly outside optical fiber adapter, the machining injection difficulty of optical fiber adapter itself is reduced, independent buckle assembly is installed into the cavity inside optical fiber adapter, when buckle assembly is frequently plugged in and pulled out abrasion or damaged, buckle assembly can be replaced alone, without replacing entire optical fiber adapter, so as to reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of fiber optic connection equipment, specifically to a fiber optic adapter and a fiber optic box assembly. Background Technology

[0002] In the field of fiber optic communication, fiber optic adapters are key components connecting outdoor and indoor fiber optic connectors. The rationality of their structural design directly affects the stability and maintenance efficiency of the fiber optic connection. Currently, fiber optic adapters are typically manufactured using injection molding, which places high demands on the precision of the molds, the injection molding process, and the structure of the fiber optic adapter. When the structure of the fiber optic adapter is complex, uneven material shrinkage can easily lead to deformation or burrs, resulting in a decrease in yield and indirectly increasing production costs.

[0003] Therefore, providing a fiber optic adapter and fiber optic box assembly to reduce costs and improve ease of use has become an urgent technical problem to be solved. Utility Model Content

[0004] Based on the above situation, the main purpose of this utility model is to provide an optical fiber adapter and optical fiber box assembly to reduce costs and improve ease of use.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, this utility model discloses an optical fiber adapter for connecting an outdoor optical fiber connector and an indoor optical fiber connector, wherein the optical fiber adapter includes a first end and a second end internally disposed therethrough, and the optical fiber adapter further includes:

[0007] The annular platform is formed by growing radially inward from the inner circumference of the fiber optic adapter. The annular platform has an opening coaxial with the fiber optic adapter. The annular platform divides the interior of the fiber optic adapter into a first connection cavity and a second connection cavity. The first connection cavity and the second connection cavity are connected through the opening. The first connection cavity is used to connect an outdoor fiber optic connector, and the second connection cavity is used to connect an indoor fiber optic connector.

[0008] A snap-fit ​​part is provided on the inner wall of the second connecting cavity;

[0009] A snap-fit ​​assembly for engaging and fixing with an indoor fiber optic connector engages with the snap-fit ​​part and is detachably disposed inside the fiber optic adapter. The bottom end face of the snap-fit ​​assembly at least partially abuts against the annular platform. The snap-fit ​​assembly includes at least two clamping members, which are arranged opposite to each other, and the distance between the two clamping members arranged opposite to each other is less than the inner diameter of the first connecting cavity.

[0010] Optionally, the snap-fit ​​assembly also includes:

[0011] The connecting wall fits into the inner wall of the second connecting cavity. The connecting wall and the clamping member are integrally formed, and there is a gap between the connecting wall and the clamping member.

[0012] Optionally, it also includes:

[0013] The reinforcing rib extends from the annular platform toward the second end, and is spaced at a predetermined distance from the inner wall of the fiber optic adapter.

[0014] Optionally, the inner diameter of the first end face is 13mm to 14.5mm, the inner diameter of the first connecting cavity is 12mm to 13mm, and the inner diameter of the second connecting cavity is 13.5mm to 14.5mm.

[0015] Optionally, it also includes:

[0016] The first thread for connecting to the outdoor fiber optic connector is provided on the outer peripheral side of the fiber optic adapter near the first end.

[0017] The connector for connecting to other fiber optic connection devices is located on the outer periphery of the fiber optic adapter near the second end.

[0018] The first limiting element is disposed between the first thread and the connecting part.

[0019] Optionally, the connecting part includes a second thread and a limiting platform, wherein:

[0020] The limiting platform is positioned on the outside of the fiber optic adapter, passing through the second thread along the axial direction.

[0021] Optionally, a second limiting member is also provided between the first limiting member and the connecting part. The first limiting member engages with the first thread to be fixedly connected to the outdoor fiber optic connector, and the second limiting member engages with the connecting part to be fixedly connected to other fiber optic connection devices.

[0022] Optionally, a connecting groove is provided between the first limiting member and the second limiting member.

[0023] Optionally, the first and / or second limiting members are provided with indicator marks.

[0024] In a second aspect, this utility model discloses an optical fiber box assembly, including an optical fiber box and an optical fiber adapter as described in any one of the first aspects, wherein the optical fiber adapter is detachably and securely connected to the optical fiber box.

[0025] Beneficial effects:

[0026] According to an embodiment of this utility model, a fiber optic adapter and fiber optic box assembly are disclosed for connecting an outdoor fiber optic connector and an indoor fiber optic connector, respectively. The fiber optic adapter includes a first end and a second end that are internally connected. The fiber optic adapter also has an annular platform, a snap-fit ​​part, and a latching assembly inside. The annular platform grows radially inward from the inner wall of the fiber optic adapter, dividing the interior of the fiber optic adapter into a first connection cavity and a second connection cavity, which are connected through an opening on the annular platform. The latching assembly and the snap-fit ​​part are snapped together and detachably disposed inside the fiber optic adapter. The bottom end face of the latching assembly at least partially abuts against the annular platform, and the latching assembly snaps into the indoor fiber optic connector to secure it. By designing the latching assembly independently outside the fiber optic adapter, the manufacturing and injection molding difficulty of the fiber optic adapter itself is reduced. The independent latching assembly is installed only inside the cavity of the fiber optic adapter and is securely connected to it. When the latching assembly wears or is damaged due to frequent insertion and removal, the latching assembly can be replaced individually without replacing the entire fiber optic adapter, thereby reducing maintenance costs.

[0027] Other beneficial effects of this utility model will be explained in detail through the introduction of specific technical features and technical solutions in the specific embodiments. Those skilled in the art should be able to understand the beneficial technical effects brought about by the technical features and technical solutions through the introduction of these technical features and technical solutions. Attached Figure Description

[0028] The preferred embodiments of the fiber optic adapter and fiber optic box assembly of this utility model will now be described with reference to the accompanying drawings. In the drawings:

[0029] Figure 1 This is a schematic diagram of the structure of a fiber optic adapter disclosed in this embodiment;

[0030] Figure 2 This is a schematic diagram of the structure of the indoor fiber optic connector connected to the fiber optic adapter disclosed in this embodiment;

[0031] Figure 3 This is a cross-sectional view of an optical fiber adapter disclosed in this embodiment in one direction;

[0032] Figure 4 This is a schematic diagram of the structure of the snap-fit ​​assembly disclosed in this embodiment;

[0033] Figure 5 This is a schematic diagram of the deformation structure of the snap-fit ​​assembly disclosed in this embodiment;

[0034] Figure 6 This is a cross-sectional view of the fiber optic adapter disclosed in this embodiment from another direction;

[0035] Figure 7This is a schematic diagram of the fiber optic box assembly provided in this embodiment. Detailed Implementation

[0036] The present invention will now be described 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.

[0037] 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.

[0038] 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."

[0039] In the description of this utility model, 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 utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] To reduce the manufacturing difficulty and maintenance cost of fiber optic adapters, this embodiment discloses a fiber optic adapter. Please refer to [reference needed]. Figure 1 , Figure 1This is a schematic diagram of the structure of a fiber optic adapter disclosed in this embodiment. The fiber optic adapter 10 has two ends for connecting to an outdoor fiber optic connector and an indoor fiber optic connector 20, respectively. The fiber optic adapter 10 includes a first end 11 and a second end 12 that are internally connected; that is, a through cavity is provided inside the fiber optic adapter 10, which connects the first end 11 and the second end 12. The fiber optic adapter 10 also has an annular platform 13 and a snap-fit ​​assembly 16 inside. In this embodiment, the annular platform 13 is integrally formed with the fiber optic adapter 10, and the snap-fit ​​assembly 16 is detachably connected to the fiber optic adapter 10. The detachable connection of the snap-fit ​​assembly 16 to the fiber optic adapter 10, compared to the integral design, allows for the replacement of the snap-fit ​​assembly 16 alone if it wears or is damaged due to frequent insertion and removal of the indoor fiber optic connector, instead of replacing the entire fiber optic adapter 10, thereby reducing maintenance costs. Furthermore, designing the snap-fit ​​assembly 16 independently, compared to a one-piece molding design, reduces the requirements for processing molds, decreases the complexity of injection molding, lowers the defect rate, and thus reduces production costs. In addition, in some cases, by replacing the snap-fit ​​assembly 16 with different specifications and sizes, the same fiber optic adapter 10 can be compatible with various indoor fiber optic connectors 20, thereby improving the compatibility and versatility of the fiber optic adapter 10.

[0041] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of the indoor fiber optic connector connected to the fiber optic adapter disclosed in this embodiment. Figure 2 As shown in this embodiment, the fiber optic adapter is adapted to an indoor fiber optic connector 20, which is a conventional component, that is, it only includes a connector assembly 21 and a housing assembly 22. Both the connector assembly 21 and the housing assembly 22 are standard parts, which are more convenient to use than unconventional components.

[0042] Please see Figure 3 , Figure 3 This is a cross-sectional view of an optical fiber adapter disclosed in this embodiment in one direction. Figure 3 As shown, the annular platform 13 is radially grown from the inner circumference of the fiber optic adapter 10. The annular platform 13 is provided with an opening 131 coaxial with the fiber optic adapter 10. The annular platform 13 divides the interior of the fiber optic adapter 10 into a first connecting cavity 14 and a second connecting cavity 15. The first connecting cavity 14 and the second connecting cavity 15 are connected through the opening 131. The first connecting cavity 14 is used to connect the outdoor fiber optic connector, and the second connecting cavity 15 is used to connect the indoor fiber optic connector 20.

[0043] In this embodiment, the annular platform 13 grows from the periphery of the inner wall of the fiber optic adapter 10, with the growth direction being radially inward. This means that the annular platform 13 and the fiber optic adapter 10 are essentially integrally molded and can be injection molded together during production. Furthermore, the annular platform 13 has an opening 131. It can be understood that the opening 131 can be obtained by cutting after the annular platform 13 has fully grown, or it can be left unclosed during the growth of the annular platform 13. The method of forming the opening 131 is not limited here. The annular platform 13 divides the interior of the fiber optic adapter 10 into a first connecting cavity 14 and a second connecting cavity 15. The opening 131 is coaxial with the fiber optic adapter 10, as well as with the first connecting cavity 14 and the second connecting cavity 15, and it connects the first connecting cavity 14 and the second connecting cavity 15. When the outdoor fiber optic connector and the indoor fiber optic connector 20 are precisely connected via the fiber optic adapter 10, the outdoor fiber optic connector is inserted into the first connection cavity 14, and the indoor fiber optic connector 20 is inserted into the second connection cavity 15. Furthermore, the indoor fiber optic connector 20 passes through the opening 131 and at least partially enters the first connection cavity 14, thus achieving precise connection with the outdoor fiber optic connector. In specific implementation, the shape of the opening 131 is adapted to the outer contour of the indoor fiber optic connector 20. For example, if the outer contour of the indoor fiber optic connector 20 is convex, the shape of the opening 131 is also set to be convex, thereby limiting the indoor fiber optic connector 20 at the opening 131, reducing and preventing the indoor fiber optic connector 20 from shaking within the fiber optic adapter 10, and thus ensuring the fiber optic connection accuracy between the outdoor fiber optic connector and the indoor fiber optic connector 20.

[0044] like Figure 1 and Figure 6 As shown, the fiber optic adapter 10 is also provided with a snap-fit ​​portion 17, which is specifically disposed on the inner wall of the second connecting cavity 15. In this embodiment, the snap-fit ​​portion 17 can be a groove. In specific implementation, the snap-fit ​​portion 17 can be disposed through the side wall of the fiber optic adapter 10, that is, connecting the second connecting cavity 15 of the fiber optic adapter 10 with the external environment, or it can be disposed without penetrating the side wall of the fiber optic adapter 10, with only a groove of a preset depth opened on the fiber optic adapter 10. Preferably, the snap-fit ​​portion 17 can be configured to penetrate the fiber optic adapter 10, which allows sufficient snap-fit ​​space for the snap-fit ​​portion 17 and the snap-fit ​​assembly 16 while ensuring that the overall radial dimension of the fiber optic adapter 10 is not too large, thereby improving the fixing effect between the fiber optic adapter 10 and the indoor fiber optic connector 20.

[0045] The snap-fit ​​assembly 16 is detachably disposed inside the fiber optic adapter 10 and securely connected to the fiber optic adapter 10. In this embodiment, the snap-fit ​​assembly 16 is used to connect to the indoor fiber optic connector 20. In specific implementation, the snap-fit ​​assembly 16 can be inserted from the second end 12 of the fiber optic adapter 10 into the second connecting cavity 15, thereby snapping into the snap-fit ​​part 17, thus achieving a secure connection between the snap-fit ​​assembly 16 and the fiber optic adapter 10. In specific implementation, the snap-fit ​​assembly 16 may be provided with a protruding part extending radially outward along the fiber optic adapter 10. The secure connection between the snap-fit ​​assembly 16 and the fiber optic adapter 10 is achieved through the snap-fit ​​between the protruding part and the snap-fit ​​part 17. Preferably, the outer contour of the snap-fit ​​assembly 16 matches the inner contour of the second connecting cavity 15, so that after the snap-fit ​​assembly 16 is snapped into the snap-fit ​​part 17, it can be firmly fixed inside the fiber optic adapter 10, improving the connection tightness between the snap-fit ​​assembly 16 and the fiber optic adapter 10.

[0046] In this embodiment, please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of the snap-fit ​​assembly disclosed in this embodiment. Figure 4 As shown, the latching assembly 16 includes at least two clamping members 161. The bottom end face of the latching assembly 16 at least partially abuts against the annular platform 13, and at this time, the latching assembly 16 engages with the latching portion 17, thereby allowing the latching assembly 16 to be fixed within the second connection cavity 15 of the fiber optic adapter 10 to secure the indoor fiber optic connector 20 inserted into the second connection cavity 15. The distance between the two opposing clamping members 161 is less than the inner diameter of the first connection cavity 14. When the indoor fiber optic connector 20 is inserted into the second connection cavity 15, the latching assembly 16 engages with the indoor fiber optic connector 20 to secure it.

[0047] At least two clamping members 161 are arranged opposite to each other, and the distance between the two clamping members 161 is less than the inner diameter of the first connecting cavity 14. In this embodiment, the clamping members 161 are used to engage with the indoor fiber optic connector 20 to clamp and fix the indoor fiber optic connector 20, thereby achieving a tight connection between the fiber optic adapter 10 and the indoor fiber optic connector 20. The fact that at least two clamping members 161 are arranged opposite to each other, clamping the indoor fiber optic connector 20 from the opposite side, improves the clamping effect on the indoor fiber optic connector 20 and enhances connection stability. It should be noted that the arrangement of at least two clamping members 161 opposite to each other does not require the clamping members 161 to be symmetrical; the clamping members 161 can have a certain angle between them.

[0048] Preferably, there are two clamping members 161, and the two clamping members 161 are symmetrically arranged. The two symmetrically arranged clamping members 161 can symmetrically engage with the indoor fiber optic connector 20, thereby improving the firmness of the connection between the fiber optic adapter 10 and the indoor fiber optic connector 20, and thus ensuring the accuracy of the fiber optic connection.

[0049] In an optional embodiment, the snap-fit ​​assembly 16 further includes a connecting wall 162, which fits against the inner wall of the second cavity 15. The connecting wall 162 and the clamping member 161 are integrally formed, and there is a gap between the connecting wall 162 and the clamping member 161. In this embodiment, the gap between the connecting wall 162 and the clamping member 161 specifically refers to the gap between the long side of the clamping member 161 and the side wall of the connecting wall 162 near the center of the second connecting cavity 15. In the specific implementation process, when the indoor fiber optic connector 20 is inserted into the second connecting cavity 15 and snaps into the snap-fit ​​assembly 16, the head end of the clamping member 161 (i.e., the snap-fit ​​position) will first undergo a slight outward deformation in the radial direction, so that the indoor fiber optic connector 20 can be smoothly inserted into the second connecting cavity 15 through the end of the clamping member 161. Subsequently, the head end of the clamping member 161 will return to its original position and snap into the indoor fiber optic connector 20. Therefore, there is a gap between the clamping member 161 and the connecting wall 162, which provides reserved deformation space for the clamping member 161, thereby ensuring that the clamping member 161 can be tightly engaged with the indoor fiber optic connector 20, improving the firmness of the connection between the fiber optic adapter 10 and the indoor fiber optic connector 20, and thus ensuring the accuracy of the fiber optic connection.

[0050] Please see Figure 5 , Figure 5 This is a schematic diagram of the deformation structure of the snap-fit ​​assembly disclosed in this embodiment. Figure 5 As shown, when the indoor fiber optic connector 20 is inserted into the second connection cavity 15 and engages with the clamping member 161, the head of the clamping member 161 will cause the entire clamping member 161 to undergo a slight outward deformation in the radial direction (the dashed line represents the shape of the clamping member 161 before deformation, and the solid line represents the shape of the clamping member 161 after deformation). Therefore, designing the other side of the head of the clamping member 161 (the side closest to the inner wall of the fiber optic adapter 10) to be recessed inward can provide sufficient deformation space for locking the clamping member 161 within the limited radial space of the fiber optic adapter 10. This allows for a secure connection between the indoor fiber optic connector 20 and the fiber optic adapter 10 while controlling the overall radial width of the fiber optic adapter 10, thereby ensuring the accuracy of the fiber optic connection.

[0051] In optional embodiments, such as Figure 3As shown, the fiber optic adapter 10 also includes a reinforcing rib 18, which protrudes from the annular platform 13 toward the second end 12. The reinforcing rib 18 is spaced at a predetermined distance from the inner wall of the fiber optic adapter 10. In this embodiment, the reinforcing rib 18 protrudes from the annular platform 13, meaning it can be integrally formed with the annular platform 13 and can be injection molded together. The grown reinforcing rib 18 has a predetermined distance from the inner wall of the fiber optic adapter 10, meaning a cavity is formed between the reinforcing rib 18 and the fiber optic adapter 10. This cavity is the sub-cavity 151 located between the second connecting cavities 15.

[0052] Since the fiber optic adapter 10 is injection molded during manufacturing, and the overall size of the indoor fiber optic connector 20 (relative to the outdoor fiber optic connector at the other end) is relatively small, the side of the fiber optic adapter 10 closest to the second end 12 will have a greater thickness. During injection molding, excessive thickness may cause the injection molding material to shrink due to uneven cooling and solidification times and different volumes before and after solidification. This will greatly affect the overall shape and structural precision of the produced fiber optic adapter 10, leading to a reduction in fiber optic connection accuracy. Therefore, a reinforcing rib 18 of a predetermined length is grown on one side of the annular platform 13, thereby forming a cavity 151 between the reinforcing rib 18 and the inner wall of the fiber optic adapter 10. By setting the reinforcing rib 18 to create the cavity 151, the injection molding thickness of the fiber optic adapter 10 closest to the second end 12 can be effectively reduced, enhancing the overall structural strength and precision of the fiber optic adapter 10, thus ensuring fiber optic connection accuracy. Furthermore, the presence of the reinforcing rib 18 can also limit the indoor fiber optic connector 20 inserted into the fiber optic adapter 10, thereby restricting the radial movement of the indoor fiber optic connector 20 within the fiber optic adapter 10 and further ensuring the accuracy of the fiber optic connection.

[0053] In this embodiment, as Figure 3 As shown, there can be two reinforcing ribs 18, with the two reinforcing ribs 18 positioned opposite each other on both sides of the opening 131. Preferably, the reinforcing ribs 18 and the snap-fit ​​assembly 16 are located on different sides of the opening 131. After the indoor fiber optic connector 20 is inserted into the fiber optic adapter and snapped into place by the snap-fit ​​assembly 16, the two snap-fit ​​assemblies 16 can fix the indoor fiber optic connector 20 in the axial direction and one radial direction. The two reinforcing ribs 18 then limit the indoor fiber optic connector 20 in the other radial direction, thereby better preventing the indoor fiber optic connector 20 from shaking within the fiber optic adapter 10 and ensuring the accuracy of the fiber optic connection. In specific implementation, the reinforcing rib 18 grows axially from the annular platform 13 towards the second end 12 of the fiber optic adapter 10 by a predetermined length. The length of the reinforcing rib 18 can be flush with the end face of the second end 12 or can exceed the end face length of the second end 12; no limitation is made here.

[0054] In an optional embodiment, the inner diameter of the end face of the first end 11 is 13mm to 14.5mm, and the inner diameter of the first connecting cavity 14 is 12mm to 13mm. In this embodiment, the inner diameter of the first connecting cavity 14 is 12mm to 13mm to adapt to the size of the outdoor fiber optic connector, so that the outdoor fiber optic connector can be inserted into the fiber optic adapter 10 from the first end 11, and the distance between the outdoor fiber optic connector and the inner wall of the fiber optic adapter 10 is less than a preset value, thereby ensuring that the outdoor fiber optic connector will not wobble significantly after being inserted into the fiber optic adapter 10.

[0055] In an optional embodiment, the inner diameter of the second connecting cavity 15 is 13.5mm to 14.5mm. In this embodiment, the inner diameter of the second connecting cavity 15 is 13.5mm to 14.5mm. The larger inner diameter facilitates the installation of components such as the snap-fit ​​assembly 16 and the reinforcing rib 18 within the second connecting cavity 15, ensuring the effective fixation of the indoor fiber optic connector 20.

[0056] In an optional embodiment, please refer to Figure 6 , Figure 6 This is a cross-sectional view of the fiber optic adapter disclosed in this embodiment from another direction. Figure 6 As shown, the outer periphery of the fiber optic adapter 10 also includes a first thread 192, a connecting portion 193, and a first limiting member 191. The first thread 192 is disposed on the outer periphery of the fiber optic adapter 10 near the first end 11 for secure connection with an outdoor fiber optic connector. The connecting portion 193 is disposed on the outer periphery of the fiber optic adapter 10 near the second end 12 for secure connection with other fiber optic connection devices. In this embodiment, the other fiber optic connection device can be a fiber optic box. The first limiting member 191 refers to an annular limiting member disposed circumferentially on the outer side of the fiber optic adapter 10. The first limiting member 191 is disposed between the first thread 192 and the connecting portion 193, separating the first thread 192 and the connecting portion 193.

[0057] In the specific implementation process, the outdoor fiber optic connector is inserted into the fiber optic adapter 10. The connecting nut of the outdoor fiber optic connector is fitted onto the fiber optic adapter 10 from the first end 11 and engages with the first thread 192 for threaded connection, thereby achieving a tight axial connection between the outdoor fiber optic connector and the fiber optic adapter 10. It can be understood that the connection stroke of the first thread 192 begins from the first end 11 of the fiber optic adapter 10 and ends at the position of the first limiting member 191. After the outdoor fiber optic connector and the fiber optic adapter 10 are threadedly connected, one end of the connecting nut of the outdoor fiber optic connector abuts against the side of the first limiting member 191.

[0058] In the specific implementation process, when the fiber optic adapter 10 is installed with the interface of the fiber optic box, the fiber optic adapter 10 is inserted into the interface of the fiber optic box. At this time, the second end 12 of the fiber optic adapter 10 is located inside the fiber optic box. Then, the connecting nut is put on the fiber optic adapter 10 from the second end 12 of the fiber optic adapter 10, so that the fiber optic adapter 10 is fastened to the fiber optic box through the cooperation between the connecting nut and the connecting part 193.

[0059] In an optional embodiment, the fiber optic adapter 10 further includes a guide structure, which is axially disposed on the inner sidewall of the fiber optic adapter 10 near the first end 11. The guide structure guides the connection direction of the outdoor fiber optic connector. In this embodiment, one end of the guide structure can be connected to the annular platform 13. The outdoor fiber optic connector is provided with a corresponding mating structure that cooperates with the guide structure. On the one hand, it guides the connection direction between the outdoor fiber optic connector and the fiber optic adapter; on the other hand, it can also circumferentially limit the outdoor fiber optic connector to prevent it from rotating within the fiber optic adapter. Preferably, the guide structure is a guide protrusion, which can be continuous or discontinuous, and the guide structure is integrally formed with the fiber optic adapter 10.

[0060] In optional embodiments, such as Figure 1 and Figure 6 As shown, the connecting portion 193 includes a second thread 1931 and a limiting platform 1932, wherein the limiting platform 1932 passes axially through the second thread 1931 and is disposed on the outside of the fiber optic adapter 10. In this embodiment, the limiting platform 1932 is used to limit the relative rotation between the fiber optic adapter 10 and the fiber optic box. Preferably, the limiting platform 1932 is specifically configured as a plane with a protrusion disposed along the axial direction of the fiber optic adapter 10. There are two limiting platforms 1932, which are stacked opposite each other on the second thread 1931, thereby passing through the second thread 1931 and causing an interrupted and discontinuous structure of the second thread 1931.

[0061] In practical implementation, the fiber optic adapter 10 is cylindrical, and the interface on the fiber optic box for connecting the fiber optic adapter is also cylindrical. When the fiber optic adapter 10 is installed with the interface of the fiber optic box, the fiber optic adapter 10 is inserted into the interface of the fiber optic box. At this time, the second end 12 of the fiber optic adapter 10 is located inside the fiber optic box. Then, the connecting nut is fitted over the second end 12 of the fiber optic adapter 10, thereby securing the fiber optic adapter 10 to the fiber optic box. However, this method of connection can easily cause the fiber optic adapter 10 to rotate circumferentially within the interface of the fiber optic box after repeated use, thus affecting the normal use of the fiber optic box and the accuracy of the fiber optic connection. Therefore, a limiting platform 1932 is provided on the outer periphery of the fiber optic adapter 10 near the second end 12. The limiting platform 1932 is specifically configured as a plane with protrusions. Correspondingly, the inner wall of the fiber optic box interface is also provided with a corresponding mating structure, which is also set as a plane. During installation, the plane structure of the fiber optic box fits against the plane structure of the fiber optic adapter 10, making the arc-shaped side of the fiber optic adapter 10 discontinuous, with a plane in the middle restricting the rotation of the fiber optic adapter 10. Multiple limiting platforms 1932 can be provided on the outer surface of the fiber optic adapter 10; this solution preferably provides two opposing limiting platforms 1932. It is understood that the limiting platforms 1932 and the mating structure can also be set as snap-fit ​​parts, protrusions, and grooves for matching and limiting, which can also prevent the fiber optic adapter 10 from rotating within the interface of the fiber optic box. In this embodiment, the fiber optic adapter 10 and the fiber optic box are respectively provided with limiting platforms 1932 and mating structures, which can improve the stability of the fiber optic adapter 10 connection, making the component connection more secure, thereby realizing the connection of the fiber optic path. Setting the limiting platform 1932 as a plane not only facilitates the installation of the fiber optic adapter 10 but also saves processing difficulty; setting a plane is more convenient than setting a groove or protrusion.

[0062] In optional embodiments, such as Figure 1 and Figure 6As shown, a second limiting member 194 is further provided between the first limiting member 191 and the connecting portion 193. Both the first limiting member 191 and the second limiting member 194 are disposed between the first thread 192 and the connecting portion 193, separating the first thread 192 and the connecting portion 193. The first limiting member 191 cooperates with the first thread 192 to fix the fiber optic adapter 10 to the outdoor fiber optic connector, and the second limiting member 194 cooperates with the connecting portion 193 to fix the fiber optic adapter 10 to other fiber optic connection devices (e.g., fiber optic boxes). In this embodiment, the second end 12 of the fiber optic adapter is located inside the fiber optic box, and the second limiting member 194 abuts against the fiber optic box on the outside of the fiber optic box. The connecting nut is fitted onto the fiber optic adapter from the second end 12, thereby fixing the fiber optic adapter 10 inside the fiber optic box by the connecting nut. The first end 11 of the fiber optic adapter extends out of the fiber optic box. The outdoor fiber optic connector is inserted into the fiber optic adapter from the first end 11 to make fiber optic connection. The outdoor fiber optic connector is threaded to the first thread 192 on one side of the first limiting member 191 through the nut structure of the outdoor fiber optic connector, so as to realize the fixed connection between the outdoor fiber optic connector and the fiber optic adapter.

[0063] In an optional embodiment, an indicator is provided on the first limiting member 191 and / or the second limiting member 194. In this embodiment, the indicator is used to indicate the insertion direction of the outdoor fiber optic connector. In specific implementation, the indicator may be, for example, an arrow or other structure provided on the first limiting member 191 and / or the second limiting member 194.

[0064] In an optional embodiment, a connecting groove 195 is further provided between the first limiting member 191 and the second limiting member 194. The connecting groove 195 is used to place a connecting cable tie, thereby facilitating the connection between the fiber optic adapter 10 and the dust cap.

[0065] Please see Figure 7 , Figure 7 This is a cross-sectional structural diagram of the fiber optic box assembly provided in this embodiment. Figure 7 As shown, the fiber optic box assembly includes a fiber optic box 30 and a fiber optic adapter 10 as described in any of the above embodiments. The fiber optic adapter 10 is detachably and securely connected to the fiber optic box 30. Both ends of the fiber optic adapter 10 have threaded structures, allowing the fiber optic adapter 10 to match the fiber optic box 30. By controlling the overall size of the fiber optic adapter 10, more fiber optic adapters 10 can be integrated into a fiber optic box 30 of the same size, improving the integration level of the fiber optic box 30.

[0066] According to an embodiment of this utility model, a fiber optic adapter and fiber optic box assembly are disclosed for connecting an outdoor fiber optic connector and an indoor fiber optic connector, respectively. The fiber optic adapter includes a first end and a second end that are internally connected. The fiber optic adapter also has an annular platform, a snap-fit ​​part, and a latching assembly inside. The annular platform grows radially inward from the inner wall of the fiber optic adapter, dividing the interior of the fiber optic adapter into a first connection cavity and a second connection cavity, which are connected through an opening on the annular platform. The latching assembly and the snap-fit ​​part are snapped together and detachably disposed inside the fiber optic adapter. The bottom end face of the latching assembly at least partially abuts against the annular platform, and the latching assembly snaps into the indoor fiber optic connector to secure it. By designing the latching assembly independently outside the fiber optic adapter, the manufacturing and injection molding difficulty of the fiber optic adapter itself is reduced. The independent latching assembly is installed only inside the cavity of the fiber optic adapter and is securely connected to it. When the latching assembly wears or is damaged due to frequent insertion and removal, the latching assembly can be replaced individually without replacing the entire fiber optic adapter, thereby reducing maintenance costs.

[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-described embodiments are merely exemplary and not restrictive. Without departing from the basic principles of this utility model, any obvious or equivalent modifications or substitutions made by those skilled in the art regarding the above details will be included within the scope of the claims of this utility model.

Claims

1. An optical fiber adapter, characterized in that, For connecting outdoor fiber optic connectors and indoor fiber optic connectors respectively, wherein the fiber optic adapter (10) includes a first end (11) and a second end (12) internally disposed through the adapter, and the fiber optic adapter (10) further includes: A ring platform (13) is formed radially inward from the inner circumference of the fiber optic adapter (10). The ring platform (13) has an opening (131) coaxial with the fiber optic adapter (10). The ring platform (13) divides the interior of the fiber optic adapter (10) into a first connecting cavity (14) and a second connecting cavity (15). The first connecting cavity (14) and the second connecting cavity (15) are connected through the opening (131). The first connecting cavity (14) is used to connect the outdoor fiber optic connector, and the second connecting cavity (15) is used to connect the indoor fiber optic connector. The snap-fit ​​part (17) is provided on the inner wall of the cavity of the second connecting cavity (15); The snap-fit ​​assembly (16) for snapping and fixing with the indoor fiber optic connector snaps into the snap-fit ​​part (17) and is detachably disposed inside the fiber optic adapter (10). The bottom end face of the snap-fit ​​assembly (16) at least partially abuts against the annular platform (13). The snap-fit ​​assembly (16) includes at least two clamping members (161), which are arranged opposite to each other, and the distance between the two clamping members (161) arranged opposite to each other is less than the inner diameter of the first connecting cavity (14).

2. The fiber optic adapter according to claim 1, characterized in that, The snap-fit ​​assembly (16) also includes: The connecting wall (162) fits against the inner wall of the second connecting cavity (15). The connecting wall (162) and the clamping member (161) are integrally formed and there is a gap between the connecting wall (162) and the clamping member (161).

3. The fiber optic adapter according to claim 1, characterized in that, Also includes: A reinforcing rib (18) is formed by protruding from the annular platform (13) toward the second end (12), and the reinforcing rib (18) is spaced apart from the inner wall of the fiber optic adapter (10) by a predetermined distance.

4. The fiber optic adapter according to claim 1, characterized in that, The inner diameter of the end face of the first end (11) is 13mm~14.5mm, the inner diameter of the first connecting cavity (14) is 12mm~13mm, and the inner diameter of the second connecting cavity (15) is 13.5mm~14.5mm.

5. The fiber optic adapter according to claim 1, characterized in that, Also includes: A first thread (192) for connection with the outdoor fiber optic connector is provided on the outer periphery of the fiber optic adapter (10) near the first end (11); A connection part (193) for connecting with other fiber optic connection devices is provided on the outer periphery of the fiber optic adapter (10) near the second end (12); The first limiting member (191) is disposed between the first thread (192) and the connecting part (193).

6. The fiber optic adapter according to claim 5, characterized in that, The connecting part (193) includes a second thread (1931) and a limiting platform (1932), wherein: The limiting platform (1932) passes through the second thread (1931) axially and is disposed on the outside of the fiber optic adapter (10).

7. The fiber optic adapter according to claim 5, characterized in that, A second limiting member (194) is also provided between the first limiting member (191) and the connecting part (193). The first limiting member (191) cooperates with the first thread (192) to be fixedly connected to the outdoor fiber optic connector, and the second limiting member (194) cooperates with the connecting part (193) to be fixedly connected to the other fiber optic connection device.

8. The fiber optic adapter according to claim 7, characterized in that, A connecting groove (195) is provided between the first limiting member (191) and the second limiting member (194).

9. The fiber optic adapter according to claim 7, characterized in that, Indicator marks are provided on the first limiting member (191) and / or the second limiting member (194).

10. An optical fiber cassette assembly, characterized in that, It includes an optical fiber box (30) and an optical fiber adapter (10) as claimed in any one of claims 1-9, wherein the optical fiber adapter (10) is detachably and securely connected to the optical fiber box (30).

Images