Optical fiber connecting device

Abstract

Disclosed in the present application is an optical fiber connecting device. The optical fiber connecting device comprises an optical fiber connecting box, optical fiber connectors and dustproof assemblies, the optical fiber connecting box being provided with connecting holes, and one end of each optical fiber connector being a plug-in end. Each dustproof assembly comprises a dustproof cap, a dustproof plug and a connecting member, a connecting ring being provided at one end of the connecting member, a fitting hook and a blocking piece being protruded on an end surface of the dustproof plug, and the blocking piece and the fitting hook being spaced apart; the connecting ring is detachably sleeved on the fitting hook, and the other end of the connecting member is connected to the optical fiber connecting box. When the optical fiber connectors and the optical fiber connecting box are in a connected state, the plug-in ends are detachably plugged into the connecting holes; when the optical fiber connectors and the optical fiber connecting box are in a separated state, the dustproof caps are detachably sleeved on the plug-in ends, and the ends of the dustproof plugs away from the connecting members are detachably plugged into the connecting holes.

Description

Fiber optic connector

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 25, 2024, with application number 202410344777.3 and invention name “Fiber Optic Connection Device”, the entire contents of which are incorporated by reference into the application. Technical Field

[0002] The present application relates to the field of optical fiber technology, and in particular to an optical fiber connection device. Background Art

[0003] Fiber optic transmission is widely used in communications and data transmission, offering advantages such as high transmission quality, strong anti-interference capabilities, and high transmission efficiency. Fiber optic connectors and fiber optic junction boxes are often required for fiber optic transmission. By inserting fiber optic connectors into the fiber optic junction box, signal transmission and conversion between different optical fibers can be achieved.

[0004] However, existing fiber optic connectors and fiber optic splice boxes are not connected together when shipped, leaving the connector heads and the connection holes of the fiber optic splice boxes exposed. Furthermore, even after assembly, due to the multiple connection holes in the fiber optic splice box, some holes or connector heads may be left unconnected. Exposed fiber optic connector heads and fiber optic splice boxes are easily infiltrated by dust, moisture, insects, and other substances, affecting the quality of fiber optic transmission. Technical issues

[0005] The main purpose of this application is to provide an optical fiber connection device, which aims to solve the problem that dust, moisture, mosquitoes, etc. are easily introduced into existing optical fiber connectors and optical fiber connection boxes, resulting in poor optical fiber transmission quality. Technical Solutions

[0006] To achieve the above-mentioned objectives, the fiber optic connection device proposed in the present application includes a fiber optic connection box, a fiber optic connector and a dust-proof assembly; the fiber optic connection box is provided with a connection hole; one end of the fiber optic connector is a plug-in end; the dust-proof assembly includes a dust cap, a dust plug and a connector, one end of the connector is provided with a connecting ring, the end face of the dust plug is convexly provided with a hook and a baffle, the baffle and the hook are arranged at intervals, the connecting ring passes through the gap between the baffle and the hook, and is sleeved on the hook so that the connector and the dust plug are detachably connected, and the other end of the connector is connected to the fiber optic connection box; when the fiber optic connector and the fiber optic connection box are in a connected state, the plug-in end is detachably inserted into the connection hole; when the fiber optic connector and the fiber optic connection box are in a separated state, the dust cap is detachably sleeved on the plug-in end, and the end of the dust plug away from the connector is detachably inserted into the connection hole.

[0007] In one embodiment of the present application, a protrusion is provided on one side of the hook facing the blocking piece, and a groove is provided on one side of the blocking piece facing the hook. The protrusion is partially located in the groove and spaced apart from the groove wall.

[0008] In one embodiment of the present application, the connecting member can be bent, and the other end of the connecting member is connected to the end surface of the optical fiber connection box where the connecting hole is opened.

[0009] In one embodiment of the present application, a card slot is provided at the end of the fiber optic connection box where the connection hole is provided, and a buckle is provided at the end of the connector away from the dust plug, and the buckle is engaged in the card slot to allow the connector and the fiber optic connection box to be detachably connected.

[0010] In one embodiment of the present application, a avoidance hole is provided at the end of the connecting member away from the dust plug, and two clips are provided. Both clips are elastically connected to the hole wall of the avoidance hole and are respectively located at the openings on both sides of the avoidance hole. The two clips are respectively clamped on the opposite sides of the slot.

[0011] In one embodiment of the present application, the fiber optic connection box is provided with a plurality of the connection holes, and the fiber optic connector and the dustproof assembly are both provided with a plurality. When the fiber optic connector and the fiber optic connection box are in a separated state, each of the dust plugs is inserted into a connection hole, and each of the dust caps is sleeved on a connecting end of the fiber optic connector.

[0012] In one embodiment of the present application, each of the connecting parts includes a main chain and at least one branch chain, one end of the main chain is connected to the fiber optic connection box, and the other end is connected to at least one branch chain, and the end of each branch chain away from the main chain is connected to a dust plug.

[0013] In one embodiment of the present application, the arrangement direction of the plurality of branches is the same as the arrangement direction of the plurality of connection holes;

[0014] And / or, a gripping portion is provided on the outer circumference of the branch chain, and a cross-sectional size of the gripping portion gradually decreases in a direction approaching the dust plug.

[0015] In one embodiment of the present application, a connecting ring is provided at the end of the branch chain, and a hook is provided at the end of the dust plug. The connecting ring is sleeved on the hook to enable the branch chain and the dust plug to be detachably connected.

[0016] In one embodiment of the present application, the surface of the plug end is provided with an external thread, the surface of the end portion of the dust plug inserted into the connecting hole is provided with an external thread, the inner wall of the dust cap is provided with an internal thread, and the dust cap is adapted to the shape of the plug end and the dust plug;

[0017] When the optical fiber connector and the optical fiber connection box are in a separated state, the dust cap is threadedly connected to the plug end; when the optical fiber connector and the optical fiber connection box are in a connected state, the dust cap is threadedly connected to the dust plug.

[0018] In one embodiment of the present application, a sealing ring is provided on the surface of the dust plug. When the dust plug is inserted into the connecting hole, the sealing ring is tightly fitted with the hole wall of the connecting hole.

[0019] And / or, a pull hole is formed at the end of the dust cap away from the opening. Beneficial effects

[0020] The optical fiber connection device proposed in the technical solution of the present application includes an optical fiber connector, an optical fiber connection box and a dustproof assembly, wherein the optical fiber connection box is provided with a connection hole, one end of the optical fiber connector is a plug-in end, and the dustproof assembly includes a dust cap, a dust plug and a connector. The plug-in end of the optical fiber connector is detachably inserted into the connection hole to achieve the connection of the optical fiber. When the optical fiber connector does not need to be connected to the optical fiber connection box, the dust cap is placed on the plug-in end of the optical fiber connector to prevent dust from entering the optical fiber connector, and the dust plug is inserted into the connection hole. When the optical fiber connector box needs to be connected to the optical fiber connection box, the dust cap and the dust plug are pulled out from the plug-in end and the connection hole respectively, and the optical fiber connector is inserted into the connection hole. Therefore, during the shipment, assembly and use of the optical fiber connector and the optical fiber connection box, the dustproof assembly can play a role in dustproof and waterproofing, thereby ensuring the quality of optical fiber signal transmission. Furthermore, the dust plug is connected to the optical fiber connection box via a connector. Therefore, after the dust plug is pulled out of the connection hole, the dust plug remains connected to the optical fiber connection box, so that when the dust plug is used to seal the connection hole again, the operation convenience can be improved. At the same time, a hook and a baffle are arranged at intervals on the end face of the dust plug, and a connecting ring is provided at the end of the connector. By sleeve-mounting the connecting ring on the hook, the connector and the dust plug are detachably connected. The baffle provided on one side of the hook prevents the connecting ring from sliding off the hook. When the connector and the dust plug need to be separated, the baffle and the hook are squeezed by the connecting ring to cause elastic deformation of the two, thereby removing the connecting ring from the gap between the hook and the baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] FIG1 is a schematic structural diagram of the optical fiber connection device of the present application;

[0023] FIG2 is a left side view of the optical fiber connection device of FIG1;

[0024] FIG3 is a schematic structural diagram of an embodiment of a dust plug, a connector, and an optical fiber connection box in an optical fiber connection device;

[0025] FIG4 is a left side view of the connection between the dust plug, the connector and the optical fiber connection box in the optical fiber connection device of FIG3;

[0026] FIG5 is a cross-sectional view along AA in FIG4 ;

[0027] FIG6 is a partial enlarged schematic diagram of point B in FIG5;

[0028] FIG7 is a schematic structural diagram of another embodiment of a dust plug, a connector, and a fiber optic connection box in an optical fiber connection device;

[0029] FIG8 is a schematic structural diagram of a dust cap and an optical fiber connector in an optical fiber connection device;

[0030] FIG9 is a schematic structural diagram of an embodiment of a connection assembly in an optical fiber connection device;

[0031] FIG10 is a schematic structural diagram of another embodiment of a connection assembly in an optical fiber connection device;

[0032] FIG11 is a partial enlarged schematic diagram of point C in FIG10 .

[0033] Description of Figure Numbers:

[0034] Reference number name Reference number name 1 optical fiber connecting device 322 blocking piece 10 optical fiber connecting box 323 sealing ring 11 connecting hole 324 stopping groove 12 card slot 33 connecting piece 20 optical fiber connector 331 main chain 21 plug-in end 332 branch chain 30 dustproof component 333 connecting ring 31 dustproof cap 334 gripping part 311 pulling hole 335 buckle 32 dustproof plug 336 avoidance hole 321 card hook

[0035] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0036] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of the features. The meanings of "and / or" and "and / or" appearing throughout the text are the same, both indicating that three parallel solutions are included. Taking "A and / or B" as an example, it includes Solution A, or Solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0040] The present application provides an optical fiber connection device 1 .

[0041] As shown in Figures 1 to 8, in one embodiment of the present application, the optical fiber connection device 1 includes an optical fiber connection box 10, an optical fiber connector 20 and a dustproof assembly 30; the optical fiber connection box 10 is provided with a connection hole 11; one end of the optical fiber connector 20 is a plug end 21; the dustproof assembly 30 includes a dustproof cap 31, a dustproof plug 32 and a connector 33, one end of the connector 33 is provided with a connecting ring 333, the end surface of the dustproof plug 32 is convexly provided with a hook 321 and a baffle 322, the baffle 322 and the hook 321 are arranged at intervals, and the connecting ring 333 is passed through The gap between the blocking piece 322 and the hook 321 is passed through and is sleeved on the hook 321, so that the connector 33 and the dust plug 32 are detachably connected, and the other end of the connector 33 is connected to the optical fiber connection box 10; when the optical fiber connector 20 and the optical fiber connection box 10 are in a connected state, the plug-in end 21 is detachably inserted into the connection hole 11; when the optical fiber connector 20 and the optical fiber connection box 10 are in a separated state, the dust cap 31 is detachably sleeved on the plug-in end 21, and the end of the dust plug 32 away from the connector 33 is detachably inserted into the connection hole 11.

[0042] In this embodiment, a fiber optic connection box 10 comprises a box body and an adapter module disposed within the box body. The box body has a mounting opening at one end, through which the adapter module is mounted. A connection hole 11 is defined on the end of the adapter module facing the mounting opening. A fiber optic connector 20 comprises a housing and an optical fiber disposed within the housing. The housing has an opening at one end, and the optical fiber extends from the opening to form a plug end 21 with the end of the housing. Plug end 21 is inserted into connection hole 11, enabling optical fiber transmission and conversion through the adapter module.

[0043] Because the optical fiber extends outside the plug end 21 and the end face of the optical fiber connection box 10 is provided with a connection hole 11, dust, moisture, mosquitoes, etc. can enter the optical fiber connector 20 and the interior of the optical fiber connection box 10, thereby affecting the quality of the optical fiber connection and transmission. Therefore, the present application also provides a dustproof assembly 30, which includes a dust cap 31, a connected dust plug 32, and a connector 33. The dust cap 31 is adapted to the shape of the plug end 21 so that when the optical fiber connector 20 is shipped or when the optical fiber connector 20 is removed from the connection hole 11, the dust cap 31 is placed on the plug end 21, thereby protecting the optical fiber. The dust plug 32 is adapted to the shape of the connection hole 11 so that when the optical fiber connection box 10 is shipped or when the optical fiber connector 20 is removed from the optical fiber connection box 10, the dust plug 32 is inserted into the connection hole 11, thereby protecting the adapter module and the optical fiber connection structure inside the optical fiber connection box 10.

[0044] In one embodiment, the dust plug 32 is connected to the optical fiber connection box 10 through a connector 33. Therefore, after the dust plug 32 is pulled out from the connection hole 11, the dust plug 32 remains connected to the optical fiber connection box 10, so that when the dust plug 32 is used to seal the connection hole again, the convenience of operation can be improved.

[0045] In one embodiment, a hook 321 and a baffle 322 are spaced apart from each other on the end face of the dust plug 32. The hook 321 includes a hook and a hook body. The hook body is connected to the end of the dust plug 32. One end of the hook is connected to the hook body, and the other end is bent toward the end face of the dust plug 32 and spaced apart from the end face of the dust plug 32. A baffle 322 is provided on one side of the hook of the hook 321. The baffle 322 is spaced apart from the hook and blocks the gap between the hook and the end face of the dust plug 32. The gap between the baffle 322 and the hook 321 is smaller than the thickness of the connecting ring 333. In addition, because both the baffle 322 and the hook 321 extend out of the end face of the dust plug 32, they both have a certain degree of elasticity.

[0046] A connecting ring 333 is provided at the end of the connecting member 33. The connecting ring 333 is pressed against the baffle 322 and the hook 321, increasing the gap between them so that the connecting ring 333 is sleeved onto the hook 321, thereby enabling a detachable connection between the connecting member 33 and the dust plug 32. The baffle 322 provided on one side of the hook 321 prevents the connecting ring 33 from sliding off the hook 321. When the connecting member 33 and the dust plug 32 need to be separated, the connecting ring 33 squeezes the baffle 322 and the hook 321, causing them to elastically deform, thereby removing the connecting ring 33 from the gap between the hook 321 and the baffle 322.

[0047] Therefore, during the shipment, assembly, and use of the optical fiber connector 20 and the optical fiber connection box 10, the dustproof component 30 can protect them from dust and water, thereby ensuring the quality of optical fiber signal transmission.

[0048] As shown in Figures 3-5 , in one embodiment of the present application, a protrusion is provided on the side of the hook facing the baffle, and a groove is provided on the side of the baffle facing the hook. The protrusion is partially located within the groove and spaced apart from the groove wall. The protrusion is located on the side of the hook closest to the end face of the dust plug. The protrusion and groove further prevent the connector 33 from slipping out between the hook and the baffle 322.

[0049] 3 to 5 , in one embodiment of the present application, the connector 33 can be bent, and the other end of the connector 33 is connected to the end surface of the optical fiber connection box 10 where the connection hole 11 is opened.

[0050] In this embodiment, since the side walls of the fiber optic connection box 10 are generally installed on the surface of a wall, a utility pole, an electrical box, or the like during installation, the connector 33 is connected to the end face of the fiber optic connection box 10 where the connection hole 11 is provided, so as to avoid the installation of the fiber optic connection box 10. Furthermore, the connector 33 can be designed to be long and convenient for removing and inserting the dust plug 32, while having a small diameter to reduce the impact of the plug end 21 of the fiber optic connector 20 of the connector 33 when it is inserted into the connection hole 11. Furthermore, since the connection between the fiber optic connection box 10 and the connector 33 and the connection hole 11 are on the same end face, a flexible material is used for part of the connector 33, or the connector 33 is designed to be a chain-like structure so that one end of the connector 33 can rotate relative to the other end. Therefore, when the dust plug 32 is not inserted into the connection hole 11, the connector 33 remains upright, and the dust plug 32 is located away from the fiber optic connection box 10 to avoid the structure of the fiber optic connector 20. When the dust plug 32 needs to be inserted into the connection hole 11, the connector 33 is bent to insert the dust plug 32 into the connection hole 11.

[0051] In addition, the dust plug 32 is connected to the optical fiber connection box 10 through the connector 33, so that when the dust plug 32 is pulled out from the connection hole 11, the connector 33 hangs the dust plug 32 on the optical fiber connection box 10, so that when it is necessary to switch the connection of the optical fiber, and after the optical fiber connector 20 is pulled out from the connection hole 11, the dust plug 32 is reinserted into the connection hole 11, thereby improving the convenience of operation.

[0052] As shown in Figures 4 to 6, in one embodiment of the present application, a card slot 12 is provided at the end of the optical fiber connection box 10 where the connection hole 11 is provided, and a buckle 335 is provided at the end of the connector 33 away from the dust plug 32. The buckle 335 is snapped into the card slot 12 so that the connector 33 and the optical fiber connection box 10 can be detachably connected.

[0053] In this embodiment, the connection hole 11 is located at the center of the end face of the fiber optic splicing box 10. A recessed slot 12 is formed in the side of the fiber optic splicing box 10. The slot 12 is located at the end of the fiber optic splicing box 10 where the connection hole 11 is located. The protrusion of the clip 335 provided on the end of the connector 33 faces the wall of the slot 12. When the end of the connector 33 is inserted into the slot 12, the protrusion of the clip 335 engages with the wall of the slot 12, thereby securing the connector 33 and the fiber optic splicing box 10.

[0054] As shown in combination with Figures 6 and 10, in one embodiment of the present application, a avoidance hole 336 is provided on the end face of the connecting member 33 away from the dust plug 32, and two clips 335 are provided. The two clips 335 are elastically connected to the hole wall of the avoidance hole 336 and are respectively located at the openings on both sides of the avoidance hole 336. The two clips 335 are respectively clamped on the opposite sides of the slot 12.

[0055] In this embodiment, the buckle 335 provided at the end of the connector 33 is connected to the wall of the avoidance hole 336 via a cantilever. That is, the buckle 335 has a cantilever of a certain length, which makes the buckle 335 elastic, thereby improving the convenience and stability of removing the buckle 335 from the slot 12. Of course, in other embodiments, the buckle 335 can also be connected to the wall of the avoidance hole 336 via an elastic member.

[0056] By providing the avoidance hole 336, when the buckle 335 is inserted into the slot 12, the buckle 335 can be deformed toward the avoidance hole 336 after contacting the edge of the slot 12. At the same time, when the buckle 335 needs to be pulled out of the slot 12, the cantilever of the buckle 335 can be pressed to deform the buckle 335 toward the avoidance hole 336, thereby improving the convenience of separating the buckle 335 from the slot 12. By providing two buckles 335, the connection stability between the buckle 335 and the slot 12 is improved. Furthermore, the size of the connector 33 gradually decreases from the end where the buckle 335 is provided to the direction away from the buckle 335, thereby improving the avoidance of the connector 33 with the optical fiber connector 20 while reducing the problem of stress concentration at the end of the connector 33 and causing breakage.

[0057] As shown in Figures 3 to 7, in one embodiment of the present application, the optical fiber connection box 10 is provided with a plurality of connection holes 11, and the optical fiber connector 20 and the dustproof assembly 30 are both provided with multiple. When the optical fiber connector 20 and the optical fiber connection box 10 are in a separated state, each dust plug 32 is inserted into a connection hole 11, and each dust cap 31 is sleeved on the plug-in end 21 of a optical fiber connector 20.

[0058] In this embodiment, to achieve signal transmission and conversion for multiple optical fibers, a plurality of connection holes 11 are generally provided in the optical fiber splicing box 10 to facilitate simultaneous insertion of multiple optical fiber connectors 20. Therefore, a plurality of dust plugs 32 and dust caps 31 are also provided to ensure the cleanliness of each optical fiber splicing box 10 and connection hole 11.

[0059] As shown in Figures 1 to 7 and Figures 9 to 10, in one embodiment of the present application, each connecting member 33 includes a main chain 331 and at least one branch chain 332. One end of the main chain 331 is connected to the optical fiber connection box 10, and the other end is connected to at least one branch chain 332. The end of each branch chain 332 away from the main chain 331 is connected to a dust plug 32.

[0060] In this embodiment, each main chain 331 can be connected to one, two, three, or other branch chains 332. For example, when the optical fiber connection box 10 is provided with five connection holes 11, three connectors 33 can be provided, wherein one connector 33 includes one main chain 331 and one branch chain 332, and the other two connectors 33 each include one main chain 331 and two branch chains 332. Each branch chain 332 is connected to a dust plug 32, that is, a total of five dust plugs 32 are provided, which are respectively inserted into the five connection holes 11.

[0061] Because the plug end 21 of the optical fiber connector 20 includes structures such as an anti-slip strip, an unlocking and resetting wedge, a front shell, and a hot melt tube, the diameter of the plug end 21 is relatively large. Therefore, the connector 33 is configured as a main chain 331 and a branch chain 332 to reduce the volume occupied by the connector 33 near the connection hole 11, thereby facilitating the insertion and removal of the optical fiber connector 20 and the optical fiber connection box 10. Furthermore, the length of the main chain 331 is designed to be greater than or equal to the length of the plug end 21, thereby further improving the avoidance effect when inserting and removing the optical fiber connector 20.

[0062] 1 , 2 and 7 , in one embodiment of the present application, the arrangement direction of the plurality of branches 332 is the same as the arrangement direction of the plurality of connection holes 11 ;

[0063] And / or, a gripping portion 334 is provided on the outer circumference of the branch chain 332 , and a cross-sectional dimension of the gripping portion 334 gradually decreases in a direction approaching the dust plug 32 .

[0064] In this embodiment, the multiple branches 332 of the multiple connecting parts 33 are designed to be arranged in the same direction as the multiple connecting holes 11, that is, the arrangement direction of the multiple branches 332 is parallel to the arrangement direction of the multiple connecting holes 11, so as to further improve the avoidance effect of the connecting parts 33 and the dust plugs 32 connected to the branches 332 on the optical fiber connector 20.

[0065] Whether or not the arrangement direction of the multiple branches 332 is limited, a gripping portion 334 is provided on the outer periphery of the branch 332. The gripping portion 334 protrudes from the outer surface of the branch 332. When pulling the branch 332 to remove the dust plug 32 from the connection hole 11, the operator can grasp the gripping portion 334, thereby improving the convenience of operation. The gripping portion 334 is truncated cone-shaped, and its cross-sectional dimensions gradually decrease as it approaches the dust plug 32. This prevents stress concentration at the connection between the gripping portion 334 and the branch 332, thereby improving the structural strength of the branch 332.

[0066] The fiber optic splice box 10 includes a box body and an adapter module. After the adapter module is inserted into the box body, it forms a concave-convex structure with the opening of the box body. The convex portion is the connection point between the box body and the adapter module, and a concave portion is formed between two adjacent connection points between the adapter module and the box body. The concave portion can reduce material costs. Therefore, the present application connects the main chain 331 to the concave portion of the fiber optic splice box 10, which reduces the material cost of the fiber optic splice box 10. At the same time, the main chain 331 is positioned closer to one side of the fiber optic splice box 10, thereby increasing the distance between the main chain 331 and the connection hole 11, thereby better avoiding the fiber optic connector 20.

[0067] As shown in Figures 8 to 10 , in one embodiment of the present application, the surface of the plug end 21 is provided with an external thread, the surface of the end portion of the dust plug 32 inserted into the connection hole 11 is provided with an external thread, and the inner wall of the dust cap 31 is provided with an internal thread. The dust cap 31 is adapted to the shapes of the plug end 21 and the dust plug 32;

[0068] When the optical fiber connector 20 and the optical fiber connection box 10 are in a separated state, the dust cap 31 is threadedly connected to the plug end 21 ; when the optical fiber connector 20 and the optical fiber connection box 10 are in a separated state, the dust cap 31 is threadedly connected to the dust plug 32 .

[0069] In this embodiment, since the optical fiber connector 20 and the optical fiber connection box 10 have two states, namely, disconnected and connected, the dust plug 32 and the dust cap 31 are frequently disconnected from the optical fiber connection box 10 and the optical fiber connector 20. When the optical fiber connector 20 and the optical fiber connection box 10 are connected, the dust cap 31 is disconnected from the optical fiber connector 20, and the dust plug 32 is disconnected from the optical fiber connection box 10. Therefore, by designing the dust plug 32 to be compatible with the shape of the plug end 21, the dust cap 31 can be placed on the outside of the dust plug 32 after being disconnected from the plug end 21, thereby protecting the dust plug 32 from external dust and moisture, and also protecting the inside of the dust cap 31 from external dust and moisture. Keeping the dust plug 32 and the dust cap 31 clean can prevent the dust plug 32 and the dust cap 31 from bringing dust, moisture, and other substances into the optical fiber connection box 10 and the optical fiber connector 20, further improving the dustproof effect of the optical fiber connection device 1.

[0070] In addition, when the optical fiber connector 20 is connected to the optical fiber connection box 10, the dust cap 31 is placed on the dust plug 32, so that the dust cap 31 is connected to the optical fiber connection box 10 through the dust plug 32, the connector 33, and the optical fiber connection box 10, thereby avoiding the dust cap 31 from being lost. This improves the convenience of connecting and disconnecting the dust cap 31 from the optical fiber connector 20 when the optical fiber connection box 10 and the optical fiber connector 20 are switched between the disconnected and connected states. Of course, the connection method of the dust cap 31, the dust plug 32, and the plug end 21 is not limited to the threaded connection defined in this embodiment. As long as a detachable connection method that can achieve the above-mentioned effect is achieved, it falls within the scope of protection of this application.

[0071] In one embodiment, locking, unlocking, and unlocking direction marks are provided on the periphery of the dust cap 31 to prompt the operator to tighten the dust cap 31 or unscrew the dust cap 31 from the optical fiber connector 20, thereby improving the operator's work efficiency.

[0072] As shown in FIG. 1 , in one embodiment of the present application, a sealing ring 323 is sleeved on the surface of the dust plug 32. When the dust plug 32 is inserted into the connecting hole 11, the sealing ring 323 is tightly fitted with the hole wall of the connecting hole 11.

[0073] And / or, a pull hole 311 is defined at the end of the dust cap 31 away from the opening.

[0074] In this embodiment, since the sealing ring 323 has a certain degree of elasticity, it can improve the connection strength between the dust plug 32, the fiber optic connection box 10, and the dust cap 31, and at the same time improve the dustproof effect of the dust plug 32. Furthermore, a limiting groove can be provided on the outer side of the dust plug 32, and the sealing ring 323 can be disposed in the limiting groove to improve the stability of the sealing ring 323 during the insertion and removal of the dust plug 32. Furthermore, a stop groove 324 is also provided on the outer surface of the dust plug 32. Since a stop block is provided inside the fiber optic connection box 10, the stop block is used to cooperate with the unlocking and resetting wedge when the fiber optic connector 20 is inserted and removed, thereby realizing the connection and unlocking functions of the fiber optic connector 20 and the fiber optic connection box 10. Therefore, a stop groove 324 is also provided on the outer periphery of the dust plug. By providing the stop groove 324, when the dust plug 32 is inserted into the connecting hole 11, the stop block abuts against the bottom of the stop groove 324. The stop groove 324 serves to prevent the stop block from being elastically deformed, thus preventing the dust plug 32 from being inserted into the connecting hole 11 for a long time and abutting against the stop block, which would cause the elastic deformation performance of the stop block to deteriorate. At the same time, the groove walls on both sides of the stop groove 324 are inclined, that is, the cross-sectional dimension of the stop groove 324 gradually increases from the groove bottom to the groove mouth, facilitating the insertion and removal of the dust plug 32.

[0075] In the case where the sealing ring 323 is provided on the surface of the dust plug 32 or not, the pull hole 311 is provided at the end of the dust cap 31, so that the dust cap 31 can be hung on a screw on the wall through the pull hole 311. In particular, after the optical fiber connector 20 is pulled out of the connection hole 11, the dust cap 31 is placed on the optical fiber connector 20 and hung on the screw or hook on the wall, thereby improving the convenience of storing the optical fiber connector 20 and facilitating the reinsertion of the optical fiber connector 20 into the connection hole 11.

[0076] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An optical fiber connection device (1), wherein: The optical fiber connection device (1) comprises: An optical fiber connection box (10), wherein the optical fiber connection box (10) is provided with a connection hole (11); An optical fiber connector (20), one end of the optical fiber connector (20) being a plug end (21); and A dustproof assembly (30), the dustproof assembly (30) comprising a dustproof cap (31), a dustproof plug (32) and a connector (33), one end of the connector (33) being provided with a connecting ring (333), an end surface of the dustproof plug (32) being provided with a hook (321) and a baffle (322), the baffle (322) and the hook (321) being spaced apart, the connecting ring (333) passing through a gap between the baffle (322) and the hook (321) and being sleeved on the hook (321) so that the connector (33) and the dustproof plug (32) are detachably connected, and the other end of the connector (33) being connected to the optical fiber connection box (10); When the optical fiber connector (20) and the optical fiber connection box (10) are in a connected state, the plug-in end (21) is detachably inserted into the connection hole (11); when the optical fiber connector (20) and the optical fiber connection box (10) are in a separated state, the dust cap (31) is detachably sleeved on the plug-in end (21), and the end of the dust plug (32) away from the connector (33) is detachably inserted into the connection hole (11).

2. The optical fiber connection device according to claim 1, wherein: The hook (321) is provided with a protrusion on one side facing the blocking piece (322), and the blocking piece (322) is provided with a groove on one side facing the hook (321). The protrusion is partially located in the groove and is spaced apart from the groove wall.

3. The optical fiber connection device (1) according to claim 1, wherein: The connecting piece (33) can be bent, and the other end of the connecting piece (33) is connected to the end surface of the optical fiber connection box (10) where the connecting hole (11) is opened.

4. The optical fiber connection device (1) according to claim 3, wherein: The end of the optical fiber connection box (10) provided with the connection hole (11) is provided with a card slot (12), and the end of the connection piece (33) away from the dust plug (32) is provided with a buckle (335), and the buckle (335) is engaged in the card slot (12) so that the connection piece (33) and the optical fiber connection box (10) can be detachably connected.

5. The optical fiber connection device (1) according to claim 4, wherein: An escape hole (336) is provided at the end of the connecting member (33) away from the dust plug (32), and two clips (335) are provided. The two clips (335) are elastically connected to the hole wall of the escape hole (336) and are respectively located at the openings on both sides of the escape hole (336). The two clips (335) are respectively clipped to the opposite sides of the card slot (12).

6. The optical fiber connection device (1) according to any one of claims 1 to 5, wherein: The optical fiber connection box (10) is provided with a plurality of connection holes (11), and the optical fiber connector (20) and the dustproof assembly (30) are both provided with a plurality of them. When the optical fiber connector (20) and the optical fiber connection box (10) are in a separated state, each of the dustproof plugs (32) is inserted into a connection hole (11), and each of the dustproof caps (31) is sleeved on a plug-in end (21) of the optical fiber connector (20).

7. The optical fiber connection device (1) according to claim 6, wherein: Each of the connecting members (33) comprises a main chain (331) and at least one branch chain (332), one end of the main chain (331) is connected to the optical fiber connection box (10), and the other end is connected to at least one branch chain (332), and one end of each branch chain (332) away from the main chain (331) is connected to a dust plug (32).

8. The optical fiber connection device (1) according to claim 7, wherein: The arrangement direction of the plurality of branches (332) is the same as the arrangement direction of the plurality of connection holes (11); And / or, a gripping portion (334) is provided on the outer circumference of the branch chain (332), and the cross-sectional size of the gripping portion (334) gradually decreases in a direction approaching the dust plug (32).

9. The optical fiber connection device (1) according to any one of claims 1 to 5, wherein: The surface of the plug end (21) is provided with an external thread, the surface of the end portion of the dust plug (32) inserted into the connecting hole (11) is provided with an external thread, the inner wall of the dust cap (31) is provided with an internal thread, and the dust cap (31) is adapted to the shape of the plug end (21) and the dust plug (32); When the optical fiber connector (20) and the optical fiber connection box (10) are in a separated state, the dust cap (31) is threadedly connected to the plug end (21); when the optical fiber connector (20) and the optical fiber connection box (10) are in a connected state, the dust cap (31) is threadedly connected to the dust plug (32).

10. The optical fiber connection device (1) according to any one of claims 1 to 5, wherein: A sealing ring (323) is sleeved on the surface of the dust plug (32); when the dust plug (32) is inserted into the connecting hole (11), the sealing ring (323) is tightly fitted with the hole wall of the connecting hole (11); And / or, a pull hole (311) is provided at the end of the dust cap (31) away from the opening thereof.

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