Optical cable connecting device, optical cable assembly and communication assembly

Abstract

An optical cable connecting device, an optical cable assembly and a communication assembly relate to the technical field of optical fiber connection, and the optical cable connecting device comprises a first sleeve, a second sleeve and an elastic member. The first sleeve is used for accommodating a connector, the second sleeve is used for accommodating an optical cable, and a first plugging section of the first sleeve is plugged with a second plugging section of the second sleeve; the first inner wall surface of the first inserting section is of an inward shrinkage structure towards the axial front end, the elastic piece is connected with the first inner wall surface in an attached mode, the elastic piece abuts against the second inserting section, and / or the second inner wall surface of the second inserting section is of an inward shrinkage structure towards the axial rear end, the elastic piece is connected with the second inner wall surface in an attached mode, and the elastic piece abuts against the first inserting section; the inner wall surface of the third accommodating cavity of the elastic member extrudes and fixes the optical cable. The optical cable connecting device can fix the connector and the optical cable, and the appropriate length of the optical cable can be determined according to needs during on-site assembly. The second sleeve and the first sleeve extrude the elastic member when inserted, so that the inner wall surface of the elastic member is attached to the optical cable to improve the sealing effect of the optical cable.

Description

Technical Field

[0001] This application relates to the technical field of optical fiber connection, and particularly relates to an optical cable connection device, an optical cable assembly, and a communication assembly. Background Art

[0002] With the development of communication technology, optical fiber transmission is increasingly used in access networks represented by fiber to the home. In a fiber to the home network, the distribution optical cable connecting to the central office (CO) can be docked with the optical cable assembly connecting to the user terminal device in a fiber distribution box for optical signal transmission. During the process of the optical cable entering the home after splicing or splitting, the reliability of the optical cable joint needs to be ensured through the stable connection and sealing protection of the optical cable. Existing pre - formed connectors can be pre - fabricated in the factory with a fixed length of the optical cable. However, after the optical cable is customized, the length of the optical cable cannot well match the routing length required in practice, which is likely to cause waste or shortage of the optical cable length. Existing on - site formed connectors simply add a shell to the on - site formed connector, and the mechanical protection provided by the shell is insufficient to meet the protection requirements of the optical cable against tensile force, water tightness, and air tightness. Summary of the Utility Model

[0003] This application provides an optical cable connection device, an optical cable assembly, and a communication assembly. By providing a first sleeve, a second sleeve, and an elastic member, the connector and the optical cable can be fixed, and the appropriate length of the optical cable can be determined according to needs during on - site assembly. In addition, when the second sleeve is inserted into the first sleeve, the elastic member can be extruded, and through the extrusion effect, the inner wall surface of the elastic member is attached to the outer wall surface of the optical cable, improving the sealing effect on the optical cable.

[0004] In a first aspect, this application provides an optical cable connection device, including a connector, a first sleeve, a second sleeve, and an elastic member; the first sleeve has a first accommodation cavity penetrating therethrough, the connector is accommodated in the first accommodation cavity, the second sleeve has a second accommodation cavity penetrating therethrough, and the second accommodation cavity is used for accommodating the optical cable; the rear end of the first sleeve in the axial direction has a first insertion section, the front end of the second sleeve in the axial direction has a second insertion section, and the first insertion section and the second insertion section are inserted; the first inner wall surface of the first insertion section is in a retracted structure towards the front end in the axial direction, the elastic member is located in the first insertion section and is attached to the first inner wall surface, the rear end of the elastic member in the axial direction abuts against the second insertion section, and / or, the second inner wall surface of the second insertion section is in a retracted structure towards the rear end in the axial direction, the elastic member is located in the second insertion section and is attached to the second inner wall surface, the front end of the elastic member in the axial direction abuts against the first insertion section; the elastic member has a third accommodation cavity penetrating therethrough, the third accommodation cavity is used for accommodating the optical cable, and the inner wall surface of the third accommodation cavity is used for squeezing and fixing the optical cable.

[0005] The connector of the optical cable connection device provided by this application can be fixedly connected to the optical cable. After the optical cable is hermetically fixed to the connector, the connector can be further fixedly connected to the optical cable connection device. When assembling and fixing at the site of fiber-to-the-home, the appropriate length of the optical cable can be determined according to the on-site needs, without causing waste or insufficient length of the optical cable. In addition, when the second sleeve is inserted and connected to the first sleeve, the elastic member located inside the first sleeve or inside the second sleeve can be squeezed. Through the squeezing action, the inner wall surface of the elastic member fits and connects with the outer wall surface of the optical cable, thereby sealing and fixing the optical cable. And under the action of the squeezing force, the elastic member is not easily separated from the optical cable, thus improving the sealing effect on the optical cable.

[0006] In a possible implementation manner, the first inner wall surface and / or the second inner wall surface is a conical surface, and the elastic member is conical or cylindrical. The first inner wall surface can be a conical surface, or the second inner wall surface can be a conical surface, or both the first inner wall surface and the second inner wall surface can be conical surfaces. Due to the existence of the conical surface structure, the thrust applied by the first insertion section or the second insertion section to the elastic member will be converted into a squeezing force applied by the conical surface to the elastic member in the direction towards the inside of the elastic member. Thus, a sufficient large squeezing force can be generated under a relatively small thrust applied by the second insertion section, achieving a high sealing level and realizing good sealing of the optical cable.

[0007] In a possible implementation manner, an internal thread is provided on the inner wall surface of the first insertion section, and an external thread is provided on the outer wall surface of the second insertion section. The second insertion section is partially inserted into the first insertion section, and the internal thread and the external thread are in threaded engagement. The first inner wall surface of the first insertion section is a retracted structure towards the front end in the axial direction. The elastic member is located inside the first insertion section and fits and connects with the first inner wall surface. The rear end in the axial direction of the elastic member abuts against the second insertion section. The first insertion section and the second insertion section are detachably connected through threaded engagement. When disassembly is required, only the second insertion section needs to be rotated to separate its threaded engagement with the first insertion section. The operation is simple, which is beneficial for rapid assembly at the fiber-to-the-home site. The elastic member is located inside the first insertion section and can fit more tightly with the first inner wall surface of the first insertion section under the extrusion of the second insertion section, thereby providing more reliable sealing protection for the optical cable and preventing leakage of liquid or gas.

[0008] In a possible implementation manner, the optical cable connection device includes a connecting rope, and the connecting rope is connected between the first sleeve and the second sleeve. The second sleeve can be connected to the first sleeve through the connecting rope to prevent the second sleeve from being lost.

[0009] In a possible implementation, the connecting rope includes a rope body, a first loop and a second loop located at both ends of the rope body. A first annular groove is provided on the outer wall of the first sleeve, and the first loop is accommodated in the first annular groove. A second annular groove is provided on the outer wall of the second sleeve, and the second loop is accommodated in the second annular groove. When using the optical cable connection device, the first loop can be first embedded into the first annular groove of the first sleeve, and then the second loop can be embedded into the second annular groove of the second sleeve. The first sleeve and the second sleeve are fixedly connected by the connecting rope to prevent the second sleeve from being lost during use.

[0010] In a possible implementation, the axial rear end of the second sleeve has a cable bundling portion. The cable bundling portion includes at least two elastic cantilevers, and there is a notch between adjacent two of the elastic cantilevers. The at least two elastic cantilevers enclose to form a fourth accommodating cavity for accommodating the optical cable. When the optical cable is located in the fourth accommodating cavity, the elastic cantilevers can deform towards the optical cable under the action of an external force, and fix the optical cable after contacting the optical cable, so that the cable bundling portion achieves the effect of clamping the optical cable, avoiding relative movement between the optical cable and the connector, and realizing the fixation of the optical cable.

[0011] In a possible implementation, a groove extending along the circumferential direction of the cable bundling portion is provided on the outer wall of the elastic cantilever. The groove is used to fix structures such as nylon cable ties or other structures for squeezing the elastic cantilever. For example, a nylon cable tie can be placed in the groove, and the elastic cantilever is squeezed by the nylon cable tie to bundle the elastic cantilever and the optical cable together, so that the elastic cantilever and the optical cable are fixed. The nylon cable tie is located in the groove, and the groove can prevent relative sliding between the nylon cable tie and the outer wall surface of the elastic cantilever, improve the fixing effect of the nylon cable tie on the elastic cantilever, and further improve the fixing effect between the elastic cantilever and the optical cable.

[0012] In a possible implementation, a protrusion is provided on the inner wall of the first sleeve, and the protrusion is used for snap connection with a card slot of an adapter. The adapter is located on a communication device to be connected to the optical cable connection device. The snap connection between the protrusion and the card slot on the adapter can enhance the connection stability between the first sleeve and the adapter and prevent detachment.

[0013] In a second aspect, the present application further provides an optical cable assembly, including an optical cable and the optical cable connection device according to any of the above implementations. The front-end optical fiber of the optical cable is fixed in the connector, and the optical cable connection device is fixedly connected to the optical cable.

[0014] The optical cable assembly provided by the present application can be connected to the adapter on the communication device of the user terminal through the optical cable connecting device, so as to realize fiber-to-the-home and the transmission of optical signals. After the optical cable is hermetically fixed to the connector, the connector can be assembled and fixed to the housing on-site during fiber-to-the-home, and the appropriate length of the optical cable can be determined according to on-site needs, without causing waste or shortage of the optical cable length. Moreover, the cooperation of the first sleeve, the second sleeve and the elastic member forms a good seal between the optical cable and the optical cable connecting device, improves the sealing effect, and finally enhances the reliability of the entire optical cable assembly.

[0015] In a third aspect, the present application provides a communication component, including an optical cable, a communication device and the optical cable connecting device described in any of the above implementation manners. The optical cable and the connector are connected and fixed in the optical cable connecting device. The communication device has an adapter. The optical cable connecting device and the adapter are plugged together, and the optical fiber at the front end in the axial direction of the connector is electrically connected to the adapter.

[0016] In the communication component provided by the present application, it can be connected to the adapter on the communication device through the optical cable connecting device, so as to realize the transmission of optical signals. After the optical cable is hermetically fixed to the connector, the connector can be assembled and fixed to the housing on-site during fiber-to-the-home, and the appropriate length of the optical cable can be determined according to on-site needs, without causing waste or shortage of the optical cable length. Moreover, the cooperation of the first sleeve, the second sleeve and the elastic member forms a good seal between the optical cable and the optical cable connecting device, improves the sealing effect, and finally enhances the reliability of the entire communication component.

[0017] In a possible implementation manner, at least a part of the adapter is plugged into the first accommodation cavity of the optical cable connecting device. The inner wall of the first accommodation cavity has a first connection structure, and the outer wall of the adapter has a second connection structure. The first connection structure and the second connection structure are detachably connected. By respectively providing the detachable first connection structure and the second connection structure on the inner wall of the first accommodation cavity and the outer wall of the adapter, the connection and separation between the adapter and the optical cable connecting device can be realized quickly and simply, which is convenient for daily maintenance or upgrade and replacement.

[0018] In a possible implementation manner, the first connection structure includes a protrusion, and the second connection structure includes a card slot. The card slot includes a first card slot and a second card slot. The first card slot extends along the axial direction of the adapter, and the first card slot extends to the free end face of the adapter. The second card slot extends along the circumferential direction of the adapter, and the first card slot and the second card slot are communicated with each other. When the first sleeve of the optical cable connecting device is inserted into the adapter, the protrusion of the first sleeve slides into the first card slot. As the first sleeve is gradually inserted into the adapter, the first sleeve can rotate, so that the protrusion slides in the second card slot until it engages with the second card slot, realizing the connection between the adapter and the optical cable connecting device.

[0019] In a possible implementation, the communication device includes a sealing ring that is sleeved on the outer wall of the adapter, and the sealing ring is sealingly connected between the adapter and the optical cable connecting device. The use of the sealing ring can improve the sealing effect between the adapter and the optical cable connecting device and meet the IP68 protection level. Description of the Drawings

[0020] Figure 1 is a schematic diagram of the connection relationship between the optical distribution network provided by the embodiment of the present application and the equipment in the central office computer room and the user terminal equipment;

[0021] Figure 2 is an exploded structural schematic diagram of the housing of the optical cable connecting device provided by the present application;

[0022] Figure 3 is a structural schematic diagram of the housing of the optical cable connecting device provided by the present application;

[0023] Figure 4 is Figure 3 a sectional view taken along line A-A in

[0024] Figure 5 is a structural schematic diagram of the optical cable connecting device and the optical cable after connection provided by the embodiment of the present application;

[0025] Figure 6 is Figure 5 a sectional view taken along line B-B in

[0026] Figure 7a is a structural schematic diagram of the first inner wall surface provided by the embodiment of the present application;

[0027] Figure 7b is a structural schematic diagram of the first inner wall surface provided by another embodiment of the present application;

[0028] Figure 7c is a structural schematic diagram of the first inner wall surface provided by another embodiment of the present application;

[0029] Figure 7d is a structural schematic diagram of the first inner wall surface provided by another embodiment of the present application;

[0030] Figure 8a is a schematic diagram of the positional relationship between the first inner wall surface and the elastic member provided by the embodiment of the present application;

[0031] Figure 8b is a schematic diagram of the positional relationship between the first inner wall surface and the elastic member provided by the embodiment of the present application;

[0032] Figure 9It is a schematic structural diagram of the optical cable connection device provided by the embodiment of the present application and the structure after the optical cables are connected;

[0033] Figure 10 It is a schematic structural diagram of the optical cable connection device provided by another embodiment of the present application;

[0034] Figure 11 It is a schematic structural diagram of the first sleeve provided by the embodiment of the present application;

[0035] Figure 12 It is a schematic structural diagram of the second sleeve provided by the embodiment of the present application;

[0036] Figure 13 It is a schematic structural diagram when the cable bundling part fixes the optical cable provided by the embodiment of the present application;

[0037] Figure 14 It is a partial schematic structural diagram of the communication device provided by the embodiment of the present application;

[0038] Figure 15 It is a partial schematic structural diagram of the communication device provided by the embodiment of the present application;

[0039] Figure 16 It is Figure 15 The sectional view at C-C in

[0040] Figure 17 It is a partial schematic structural diagram of the communication device provided by the embodiment of the present application. Specific embodiments

[0041] The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0042] For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of the present application will be explained and described below first.

[0043] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0044] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0045] It should be understood that the term "and / or" used herein is merely a description of the same field of related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally indicates an "or" relationship between the related objects before and after.

[0046] It should be understood that the "first", "second", etc. used in this application are only for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0047] In the description of this application, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0048] For the range used in this application, unless it is separately pointed out that the end values are not included, it is default to include the two end values of the range. For example, in the range from 1 to 5, the two values 1 and 5 are included.

[0049] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a contact connection or an integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] With the development of communication technology, optical fiber transmission is increasingly used in Fiber To The X (FTTx) systems. FFTx systems can be, but are not limited to, Fiber To The Home (FTTH), Fiber To The Curb (FTTC), Fiber To The Premises (FTTP), Fiber To The Node Or Neighborhood (FTTN), Fiber To The Office (FTTO), and Fiber To The Servicearea (FTTSA). In this application, the optical cable connection device, optical cable assembly, and communication component provided are described by taking the application to the Fiber To The Home (FTTH) system as an example.

[0051] Refer to Figure 1 As shown, the fiber-to-home system includes an optical line terminal (OLT) in the central office equipment, an optical network terminal (ONT) of the user terminal equipment, and an optical distribution network (ODN). As an important part of the fiber-to-home system, the ODN is the optical transmission physical channel between the central office equipment and the user terminal equipment. The ODN can be composed of optical fiber cables, connectors, optical splitters, and optical fiber distribution equipment for installing and connecting these devices. Specifically, the ODN includes a feeder section optical cable, an optical cable distribution point, a distribution section optical cable, a user access point, and an in-house section optical cable. The feeder section optical cable, as the backbone optical cable of the ODN, is connected between the central office equipment and the optical fiber distribution point, and can achieve long-distance coverage of optical signals. The distribution section optical cable is connected between the optical fiber distribution point and the user access point, and can perform local distribution of optical fibers for the user areas along the feeder section optical cable. The in-house section optical cable is connected between the user access point and the user terminal equipment to achieve connection with the distribution section optical cable and fiber entry into the home.

[0052] In actual situations, to ensure the reliability and efficiency of optical cable connection, plug-and-play quick-fixing and sealing optical cable connectors are widely used. One of them is a prefabricated cable with the optical cable and the connector prefabricated in the factory. The length of the optical cable in this prefabricated cable is fixed, which easily brings problems such as redundant optical cable length or insufficient optical cable length, thus causing inconvenience in construction. Another is a field-terminated connector with the optical cable and the connector assembled on-site, which cannot meet the protection requirements of the optical cable against tensile stress, water tightness, and air tightness.

[0053] To solve the above problems, the present application provides an optical cable connection device 10, which can quickly connect a connector and an optical cable to an adapter on-site and can form a good seal with the optical cable to ensure that the optical cable reaches the IP68 protection level. Refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the optical cable connection device 10 includes a connector 20 and a housing 11, and the housing 11 is sleeved outside the connector 20. The housing 11 includes a first sleeve 100, a second sleeve 200, and an elastic member 300. The first sleeve 100 has a through first accommodation cavity 110, and the first accommodation cavity 110 extends along the axial direction of the first sleeve 100. In the present application, the axial direction is the Y direction, and the axial direction mentioned below is the same as this and will not be repeated later. Refer to Figure 5 and Figure 6 As shown, the connector 20 is accommodated in the first accommodation cavity 110, and the first sleeve 100 is sleeved outside the connector 20.

[0054] Continuing to refer to Figures 2 to 6 As shown, the second sleeve 200 has a through second accommodation cavity 210, and the second accommodation cavity 210 extends along the axial direction of the second sleeve 200. The second accommodation cavity 210 is used to accommodate the optical cable 30. The second sleeve 200 is sleeved outside the optical cable 30, and the optical cable 30 passes through the second accommodation cavity 210 and is plugged and connected to the connector 20 located in the first accommodation cavity 110, and part of the optical cable 30 is located in the second accommodation cavity 210. The connector 20 may include a ferrule 21, and the ferrule 21 is used to connect with the optical cable 30. The ferrule 21 may have a through hole. When connecting the connector 20 with the optical cable 30, the optical fiber in the optical cable 30 may be inserted into the through hole of the ferrule 21 and fixedly connected to the ferrule 21. When the connector 20 is connected to a communication device, the ferrule 21 serves as the connection end of the connector 20 and is connected to the adapter of the communication device. When two connectors 20 are docked in the adapter, the front ends of the ferrules 21 on the two connectors 20 abut against each other, so that the end faces of the two optical fibers are butted, realizing the connection of the optical cable 30 and the communication device and the conduction of the optical fiber signal.

[0055] The axial rear end of the first sleeve 100 has a first insertion section 120. Refer to Figure 4 As shown, the axial rear end of the first sleeve 100 refers to the end of the first sleeve 100 in the opposite direction of Y. The axial front end of the second sleeve 200 has a second insertion section 220. Refer to Figure 4As shown, the axial front end of the second sleeve 200 refers to one end of the second sleeve 200 in the positive Y direction. In this embodiment, both the first sleeve 100 and the second sleeve 200 can be in a circular tubular shape. The diameter of the first insertion section 120 can be smaller than the diameter of the axial front end of the first sleeve 100, and the diameter of the second insertion section 220 can be smaller than the diameter of the axial rear end of the second sleeve 200. The first insertion section 120 and the second insertion section 220 are inserted into each other. The first insertion section 120 can be inserted into the second receiving cavity 210 to be inserted into the second insertion section 220, so that the first sleeve 100 is connected to the second sleeve 200; alternatively, the second insertion section 220 can be inserted into the first receiving cavity 110 to be inserted into the first insertion section 120, so that the first sleeve 100 is connected to the second sleeve 200.

[0056] The first inner wall surface 121 of the first insertion section 120 is in a retracted structure towards the axial front end. The elastic member 300 is located inside the first insertion section 120 and is in a fitting connection with the first inner wall surface 121. The axial rear end of the elastic member 300 abuts against the second insertion section 220. Alternatively, the second inner wall surface 221 of the second insertion section 220 is in a retracted structure towards the axial rear end. The elastic member 300 is located inside the second insertion section 220 and is in a fitting connection with the second inner wall surface 221. The axial front end of the elastic member 300 abuts against the first insertion section 120. Still alternatively, the first inner wall surface 121 of the first insertion section 120 is in a retracted structure towards the axial front end. One end (axial front end) of the elastic member 300 in the positive Y direction is located inside the first insertion section 120 and is in a fitting connection with the first inner wall surface 121. The second inner wall surface 221 of the second insertion section 220 is in a retracted structure towards the axial rear end. One end (axial rear end) of the elastic member 300 in the negative Y direction is located inside the second insertion section 220 and is in a fitting connection with the second inner wall surface 221. Both ends of the elastic member 300 abut against the first insertion section 120 and the second insertion section 220 respectively. Refer to Figures 7a to 7d As shown, taking the first inner wall surface 121 of the first insertion section 120 being in a retracted structure towards the axial front end as an example, the retracted structure in this application is explained. Figure 7a 、 Figure 7b 、 Figure 7c and Figure 7d respectively show different forms of the first inner wall surface 121 in a retracted structure. The first inner wall surface 121 of the first insertion section 120 being in a retracted structure towards the axial front end means that the first inner wall surface 121 has different inner diameters. At least one first inner diameter d1 of the first inner wall surface 121 in the positive Y direction is smaller than at least one second inner diameter d2 of the first inner wall surface 121 in the negative Y direction, so that when the elastic member 300 is located inside the first insertion section 120, the first inner wall surface 121 can apply a squeezing force towards the inside of the elastic member 300 due to the shortening of the inner diameter, causing the elastic member 300 to deform. The first inner wall surface 121 can be as Figure 7a and Figure 7bThe figure shows a plane, or it can be like Figure 7c The figure shows a curved surface, or it can be like Figure 7d The figure shows both a plane and a curved surface. It can be understood that the second inner wall surface 221 of the second insertion section 220 is a retracted structure towards the axial rear end, which is similar to the first inner wall surface 121 of the first insertion section 120 being a retracted structure towards the axial front end. The difference is that at least one inner diameter of the second inner wall surface 221 in the reverse Y direction is smaller than at least one inner diameter of the second inner wall surface 221 in the reverse Y direction.

[0057] The elastic member 300 has a through third accommodation cavity 310, and the third accommodation cavity 310 penetrates the elastic member 300 in the axial direction. The third accommodation cavity 310 is used to accommodate the optical cable 30, and the inner wall surface of the third accommodation cavity 310 is used to squeeze and fix the optical cable 30, so that the elastic member 300 is fixedly connected to the optical cable 30. The elastic member 300 in this application may include, but is not limited to, an elastic rubber sealing ring, a rubber sealing sleeve, a silica gel sealing sleeve, etc. The elastic member 300 has elasticity and will undergo elastic deformation when subjected to an external force and will return to its original state after the external force is withdrawn. The elastic member 300 can play roles such as sealing, buffering, or connecting. After the inner wall surface of the third accommodation cavity 310 squeezes and fixes the optical cable 30, the inner wall surface of the elastic member 300 can fit with the outer wall surface of the optical cable 30 to form a seal between the elastic member 300 and the optical cable 30. The optical fiber in the optical cable 30 can be inserted into the through hole of the ferrule 21 and fixedly connected to the ferrule 21, so as to be fixedly connected to the connector 20. The first sleeve 100 is sleeved outside the connector 20. When the second sleeve 200 is inserted into the first sleeve 100, the second insertion section 220 of the second sleeve 200 pushes the elastic member 300 to move into the first insertion section 120 of the first sleeve 100, and the first inner wall surface 121 of the first insertion section 120 can squeeze the elastic member 300 to make the inner wall surface of the elastic member 300 fit with the outer wall surface of the optical cable 30 and fix the optical cable 30.

[0058] The following takes the example where the elastic member 300 is located in the first insertion section 120 and is in fitting connection with the first inner wall surface 121 for detailed description.

[0059] In one embodiment, referring to Figure 5 and Figure 6 as shown, the first insertion section 120 has a partial first accommodation cavity 110, and the second insertion section 220 can be inserted into the first accommodation cavity 110 of the first insertion section 120 so that the first insertion section 120 and the second insertion section 220 are inserted and connected. The first inner wall surface 121 of the first insertion section 120 is a retracted structure towards the axial front end, and the inner diameter of the first inner wall surface 121 of the first insertion section 120 in the positive Y direction is smaller than the inner diameter in the reverse Y direction. Referring to Figure 6 and Figure 8a as shown, where Figure 8aSchematic diagram of the positional relationship between the elastic member 300 and the first inner wall surface 121 when the elastic member 300 is not extruded by the second insertion section 220. After the first insertion section 120 and the second insertion section 220 are inserted, the axial rear end of the elastic member 300 abuts against the second insertion section 220, and the second insertion section 220 applies a thrust force F1 in the positive Y direction to the elastic member 300. The thrust force F1 causes the elastic member 300 to move relative to the first inner wall surface 121 in the positive Y direction. As the second insertion section 220 continuously inserts into the first insertion section 120 in the positive Y direction, the axial front end of the elastic member 300 gradually locates inside the first insertion section 120, forming a structure where the elastic member 300 is located inside the first insertion section 120 and is in close connection with the first inner wall surface 121 as shown in Figure 8b . Referring to Figure 8b , under the action of the thrust force F1 of the second insertion section 220, the elastic member 300 is fixed inside the first insertion section 120, and the outer wall surface of the elastic member 300 is in close connection with the first inner wall surface 121 of the first insertion section 120. The first inner wall surface 121 is in a retracted structure towards the axial front end, and the first inner wall surface 121 applies an extrusion force F2 towards the inside of the elastic member 300 to the elastic member 300. The extrusion force F2 causes the third inner diameter d of the elastic member 300 to be smaller than that of the elastic member 300 in the Figure 8a state. The inner wall surface of the elastic member 300 is in close connection with the outer wall surface of the optical cable 30, so that the optical cable 30 is fixed by the elastic member 300, and a seal is formed between the outer wall surface of the optical cable 30 and the inner wall surface of the elastic member 300. In Figure 8b , the elastic member 300 is completely located inside the first insertion section 120. Of course, in some other possible embodiments, the elastic member 300 may also be partially located inside the first insertion section 120.

[0060] The optical cable connection device 10 provided by the present application includes a housing 11 and a connector 20. The housing 11 can be assembled on-site; the housing 11 can also be pre-assembled at the factory and then disassembled into a first sleeve 100, a second sleeve 200, and an elastic member 300 for assembly with the connector 20 when assembling with the connector 20. The connector 20 of the optical cable connection device can be fixedly connected to the optical cable 30. The optical cable 30 and the connector 20 can be assembled on-site or directly assembled at the factory. After the optical cable 30 and the connector 20 are hermetically fixed, the connector 20 can be further assembled and fixed to the housing 11 on-site. For example, the first sleeve 100 and the elastic member 300 can be first sleeved outside the connector 20, and then the second sleeve 200 is inserted and connected to the first sleeve 100 in the direction towards the first sleeve 100. The second insertion section 220 of the second sleeve 200 pushes the elastic member 300 to move into the first insertion section 120 of the first sleeve 100. The first inner wall surface 121 of the first insertion section 120 can squeeze the elastic member 300 to make the inner wall surface of the elastic member 300 fit and fix the outer wall surface of the optical cable 30. The optical cable 30 is fixedly connected to the connector 20, and the housing 11 is connected to the connector 20 through the optical cable 30. When assembling and fixing the connector 20 and the housing 11 at the site of fiber-to-the-home, the appropriate length of the optical cable can be determined according to the on-site needs, without causing waste or shortage of the optical cable length. In addition, when the second sleeve 200 is inserted and connected to the first sleeve 100, the elastic member 300 located inside the first sleeve 100 or inside the second sleeve 200 can be squeezed. Through the squeezing action, the inner wall surface of the elastic member 300 is attached to the outer wall surface of the optical cable 30, so as to seal and fix the optical cable 30. And under the action of the squeezing force, the elastic member 300 is not easily separated from the optical cable 30, thereby improving the sealing effect on the optical cable 30.

[0061] In a possible implementation manner, the first inner wall surface 121 and / or the second inner wall surface 221 is a conical surface, and the elastic member 300 is conical or cylindrical. Among them, the first inner wall surface 121 can be a conical surface, the second inner wall surface 221 can be a cylindrical surface, and the elastic member 300 can be conical. Or, the first inner wall surface 121 can be a conical surface, the second inner wall surface 221 can be a cylindrical surface, and the elastic member 300 can be cylindrical. Or, the second inner wall surface 221 can be a conical surface, the first inner wall surface 121 can be a cylindrical surface, and the elastic member 300 can be conical. Or, the second inner wall surface 221 can be a conical surface, the first inner wall surface 121 can be a cylindrical surface, and the elastic member 300 can be cylindrical. Or, both the first inner wall surface 121 and the second inner wall surface 221 can be conical surfaces, and the elastic member 300 is conical. Or, both the first inner wall surface 121 and the second inner wall surface 221 can be conical surfaces, and the elastic member 300 is cylindrical.

[0062] Specifically, in one embodiment, refer toFigure 4 and Figure 11 As shown, the first inner wall surface 121 can be a conical surface, the second inner wall surface 221 can be a cylindrical surface, and the elastic member 300 can be columnar. The inner diameter of the first inner wall surface 121 gradually decreases in the positive Y direction, and the maximum inner diameter of the first inner wall surface 121 is greater than the outer diameter of the columnar elastic member 300. The elastic member 300 can be located within the first insertion section 120, and the second insertion section 220 can be inserted into the first insertion section 120 for plug-in connection with the first insertion section 120. The second insertion section 220 is cylindrical, the second inner wall surface 221 of the second insertion section 220 can be a cylindrical surface, and the inner diameter of the second inner wall surface 221 can be equal in the positive Y direction. The elastic member 300 can be columnar. It can be understood that the elastic member 300 being columnar means that the overall appearance structure of the elastic member 300 is a structure similar to a column, such as Figure 8aThe axial front end and the axial rear end of the middle elastic member 300 are inclined at a certain angle with respect to the Y direction respectively, which also belongs to the cylindrical structure described in this embodiment. The outer wall surface of the elastic member 300 can be adaptively designed according to the specific shape of the first inner wall surface 121 or the second inner wall surface 221, so that the elastic member 300 can be more easily pushed into the first insertion section 120 or the second insertion section 220 by an external force. The elastic member 300 is located in the first insertion section 120. When the second insertion section 220 is inserted into the first insertion section 120, the second insertion section 220 is inserted into the first insertion section 120 along the positive Y direction, and the second insertion section 220 squeezes the elastic member 300 along the positive Y direction. After the elastic member 300 is squeezed by the second insertion section 220 in the first insertion section 120, under the driving force of the second insertion section 220, it moves along the conical surface in the positive Y direction. The first inner wall surface 121 is a conical surface with an inner diameter gradually decreasing along the positive Y direction. The part of the first inner wall surface 121 away from the second insertion section 220 applies a squeezing force towards the inside of the elastic member 300, so that the inner diameter of one end (axial front end) of the elastic member 300 in the positive Y direction continuously decreases, compressing the inner diameter of the elastic member 300 until the inner wall surface of the elastic member 300 can fit with the outer wall surface of the optical cable 30 located inside the third accommodation cavity 310 of the elastic member 300. During the continuous insertion of the second insertion section 220 into the first insertion section 120, the inner diameter of the elastic member 300 continuously decreases and is fixed to the optical cable 30. The optical cable 30 will move along the positive Y direction under the combined push of the second insertion section 220 and the elastic member 300, so that the optical cable 30 located at the side of the elastic member 300 away from the second insertion section 220 is bent. The first accommodation cavity 110 has enough space to accommodate the bent optical cable 30. The elastic member 300 can achieve simultaneous fixation and sealing of the optical cable 30 under the combined action of the first insertion section 120 and the second insertion section 220, meeting the tensile strength requirements of the optical cable 30 and the IP68 protection requirements of the optical cable 30. The first inner wall surface 121 is a conical surface. Due to the existence of the conical surface structure, the pushing force applied by the second insertion section 220 to the elastic member 300 along the positive Y direction will be converted into a squeezing force applied by the conical surface to the elastic member 300 towards the inside of the elastic member 300. Thus, a sufficient large squeezing force can be generated under a relatively small pushing force applied by the second insertion section 220, and a high sealing level can be achieved, realizing good sealing of the optical cable 30.

[0063] In one embodiment, the second inner wall surface 221 may be a conical surface, the first inner wall surface 121 may be a cylindrical surface, and the elastic member 300 may be columnar. The inner diameter of the second inner wall surface 221 gradually decreases in the reverse Y direction, and the maximum inner diameter of the second inner wall surface 221 is greater than the outer diameter of the columnar elastic member 300. The elastic member 300 may be located within the second insertion section 220, and the first insertion section 120 may be inserted into the second insertion section 220 for plug-in connection with the second insertion section 220. The first insertion section 120 is cylindrical, the first inner wall surface 121 of the first insertion section 120 may be a cylindrical surface, and the inner diameter of the first inner wall surface 121 may be equal in the reverse Y direction. The elastic member 300 is located within the second insertion section 220. When the first insertion section 120 is plugged into the second insertion section 220, the first insertion section 120 is inserted into the second insertion section 220 in the reverse Y direction and squeezes the elastic member 300 in the reverse Y direction. After being squeezed by the first insertion section 120 within the second insertion section 220, the elastic member 300 moves in the reverse Y direction along the conical surface under the driving force of the first insertion section 120. The portion of the second inner wall surface 221 away from the first insertion section 120 applies a squeezing force towards the inside of the elastic member 300 to continuously reduce the inner diameter of one end (the rear end in the axial direction) of the elastic member 300 in the reverse Y direction, compressing the inner diameter of the elastic member 300 until the inner wall surface of the elastic member 300 can fit against the outer wall surface of the optical cable 30 located inside the third accommodation cavity 310 of the elastic member 300. During the continuous plugging of the first insertion section 120 into the second insertion section 220, the inner diameter of the elastic member 300 continuously decreases and is fixed to the optical cable 30. The optical cable 30 will move in the reverse Y direction under the combined push of the first insertion section 120 and the elastic member 300, thereby pulling the optical cable 30 located at the side of the elastic member 300 away from the second insertion section 220. The optical cable 30 located at the side of the elastic member 300 away from the second insertion section 220 may be in a bent state to prevent the optical cable 30 located at the side of the elastic member 300 away from the second insertion section 220 from breaking. The elastic member 300 can simultaneously fix and seal the optical cable 30 under the combined action of the first insertion section 120 and the second insertion section 220, meeting the tensile strength requirements of the optical cable 30 and the IP68 protection requirements of the optical cable 30. The second inner wall surface 221 is a conical surface. Due to the existence of the conical surface structure, the pushing force applied by the first insertion section 120 to the elastic member 300 in the reverse Y direction will be converted into a squeezing force applied by the conical surface towards the inside of the elastic member 300. Thus, a sufficiently large squeezing force can be generated with a relatively small pushing force applied by the first insertion section 120, achieving a high sealing level and providing good sealing for the optical cable 30.

[0064] In one possible implementation, referring to Figure 4 、 Figure 11 and Figure 12As shown, an internal thread 122 is provided on the inner wall surface of the first insertion section 120, and an external thread 222 is provided on the outer wall surface of the second insertion section 220. The second insertion section 220 is partially inserted into the first insertion section 120, so that the external thread 222 on the second insertion section 220 is in threaded engagement with the internal thread 122 in the first insertion section 120, thereby realizing the detachable connection between the first insertion section 120 and the second insertion section 220. When disassembly is required, simply rotate the second insertion section 220 to separate it from the threaded engagement with the first insertion section 120. The operation is simple and is conducive to rapid assembly at the fiber-to-the-home site. The first inner wall surface 121 of the first insertion section 120 is of a retracted structure towards the front end in the axial direction. The elastic member 300 is located inside the first insertion section 120 and is in fitting connection with the first inner wall surface 121. The rear end in the axial direction of the elastic member 300 abuts against the second insertion section 220. The elastic member 300 is located inside the first insertion section 120 and can fit more closely against the first inner wall surface 121 of the first insertion section 120 under the extrusion of the second insertion section 220, thereby providing more reliable sealing protection for the optical cable 30 and preventing liquid or gas leakage.

[0065] In some other possible embodiments, an external thread 222 is provided on the outer wall surface of the first insertion section 120, and an internal thread 122 is provided on the inner wall surface of the second insertion section 220. The first insertion section 120 is partially inserted into the second insertion section 220, so that the external thread 222 on the first insertion section 120 is in threaded engagement with the internal thread 122 in the second insertion section 220, thereby realizing the detachable connection between the first insertion section 120 and the second insertion section 220. When disassembly is required, simply rotate the second insertion section 220 to separate it from the threaded engagement with the first insertion section 120. The second inner wall surface 221 of the second insertion section 220 is of a retracted structure towards the rear end in the axial direction. The elastic member 300 is located inside the second insertion section 220 and is in fitting connection with the second inner wall surface 221. The front end in the axial direction of the elastic member 300 abuts against the first insertion section 120. The elastic member 300 is located inside the second insertion section 220 and can fit more closely against the second inner wall surface 221 of the second insertion section 220 under the extrusion of the first insertion section 120, thereby providing more reliable sealing protection for the optical cable 30 and preventing liquid or gas leakage.

[0066] In one embodiment, refer to Figure 10As shown, a second groove (not shown in the figure) is provided on the first insertion section 120. The shape of the second groove can be an annular groove, and the opening of the second groove faces the second insertion section 220. An internal thread 122 is provided on the inner wall surface of the second groove, and an external thread 222 is provided on the outer wall surface of the second insertion section 220. The second insertion section 220 is partially inserted into the second groove of the first insertion section 120, so that the external thread 222 on the second insertion section 220 is in threaded engagement with the internal thread 122 in the second groove, thereby realizing the detachable connection between the first insertion section 120 and the second insertion section 220. The first inner wall surface 121 of the first insertion section 120 is in a retracted structure towards the front end in the axial direction. The elastic member 300 is located inside the second insertion section 220 and is in fitting connection with the second inner wall surface 221. The front end in the axial direction of the elastic member 300 abuts against the first insertion section 120. When the second insertion section 220 is inserted into the second groove of the first insertion section 120, the first insertion section 120 can squeeze the elastic member 300 in the reverse Y direction, and then the second inner wall surface 221 of the second insertion section 220 squeezes the elastic member 300, so that the inner wall surface of the elastic member 300 is fixedly connected to the optical cable 30. The elastic member 300 is located inside the first insertion section 120. When disassembly is required, only the second insertion section 220 needs to be rotated to separate its threaded engagement with the first insertion section 120.

[0067] In a possible implementation, referring to Figure 2 、 Figure 4 and Figure 9 As shown, the optical cable connection device 10 includes a connecting rope 400, and the connecting rope 400 is connected between the first sleeve 100 and the second sleeve 200. The connecting rope 400 is used to connect the first sleeve 100 and the second sleeve 200. The second sleeve 200 can be connected to the first sleeve 100 through the connecting rope 400 to prevent the second sleeve 200 from being lost.

[0068] The connecting rope 400 includes a rope body 410 and a first loop 420 and a second loop 430 located at both ends of the rope body 410. A first annular groove 130 is provided on the outer wall of the first sleeve 100, and the first loop 420 is accommodated in the first annular groove 130. A second annular groove 230 is provided on the outer wall of the second sleeve 200, and the second loop 430 is accommodated in the second annular groove 230. When using the optical cable connection device 10, the first loop 420 can be first embedded into the first annular groove 130 of the first sleeve 100, and then the second loop 430 can be embedded into the second annular groove 230 of the second sleeve 200. The first sleeve 100 and the second sleeve 200 are fixedly connected through the connecting rope 400 to prevent the second sleeve 200 from being lost during use.

[0069] In a possible implementation, referring to Figure 6 、 Figure 9 and Figure 13As shown, the axial rear end of the second sleeve 200 has a cable bundling portion 240 for fixing the optical cable 30. The cable bundling portion 240 includes at least two elastic cantilevers 241 which are elastic and can be deformed under an external force. The number of the elastic cantilevers 241 can be two, three, four, etc. The present application places no limit on the number of the elastic cantilevers 241. There is a notch 242 between two adjacent elastic cantilevers 241. At least two elastic cantilevers 241 are spaced apart in the circumferential direction of the second sleeve 200, and the interval between two adjacent elastic cantilevers 241 is the notch 242. At least two elastic cantilevers 241 enclose a fourth accommodation cavity 243 for accommodating the optical cable 30. When the optical cable 30 is located in the fourth accommodation cavity 243, the elastic cantilevers 241 can be deformed towards the optical cable 30 under an external force, and fix the optical cable 30 after contacting it. For example, the elastic cantilevers 241 can be pressed by nylon cable ties or other structures, so that the elastic cantilevers 241 are attached to the outer wall surface of the optical cable 30 and the elastic cantilevers 241 do not rebound, thereby enabling the cable bundling portion 240 to achieve the effect of clamping the optical cable 30, avoiding relative movement between the optical cable 30 and the connector 20, and realizing the fixation of the optical cable 30.

[0070] In a possible implementation manner, refer to Figure 9 As shown, a convex portion 245 is further provided on the wall surface of the elastic cantilever 241 facing the optical cable 30. When the elastic cantilever 241 is attached to the optical cable 30, the convex portion 245 can generate an additional local pressure point, increase the friction between the elastic cantilever 241 and the outer wall surface of the optical cable 30, improve the fixing effect between the elastic cantilever 241 and the optical cable 30, and avoid relative movement between the optical cable 30 and the elastic cantilever 241. The convex portion 245 can be in a tetrahedral shape, and one vertex of the convex portion 245 in the tetrahedral shape can face the optical cable 30. Of course, in some other possible embodiments, the convex portion 245 can also be in a cylindrical shape, a polyhedral shape, a spherical shape, etc.

[0071] In a possible implementation manner, refer to Figure 9 As shown, anti-slip patterns are further provided on the outer wall surface of the second sleeve 200. The anti-slip patterns are located between the second insertion section 220 and the cable bundling portion 240, and the anti-slip patterns can increase the friction and facilitate the operator to insert the second sleeve 200 into the first sleeve 100.

[0072] In a possible implementation manner, refer to Figure 6 、 Figure 9 and Figure 13As shown, a groove 244 extending circumferentially along the cable bundling portion 240 is provided on the outer wall of the elastic cantilever 241. A groove 244 can be provided on the outer wall of each elastic cantilever 241. The groove 244 is used to fix, for example, a nylon cable tie or other structure for squeezing the elastic cantilever 241. For example, a nylon cable tie can be placed in the groove 244. By squeezing the elastic cantilever 241 with the nylon cable tie, the elastic cantilever 241 is bundled with the optical cable 30, so that the elastic cantilever 241 and the optical cable 30 are fixed. The nylon cable tie is located in the groove 244, and the groove 244 can prevent relative sliding between the nylon cable tie and the outer wall surface of the elastic cantilever 241, improve the fixing effect of the nylon cable tie on the elastic cantilever 241, and further improve the fixing effect between the elastic cantilever 241 and the optical cable 30. The number of grooves 244 on each elastic cantilever 241 is at least one. When the number of grooves 244 on each elastic cantilever 241 is greater than one, at least two grooves 244 are spaced apart along the Y direction on the elastic cantilever 241. At least two grooves 244 can further enhance the fixing effect between the elastic cantilever 241 and the optical cable 30.

[0073] In a possible implementation manner, a protrusion 140 is provided on the inner wall of the first sleeve 100. The protrusion 140 is located at one end of the first sleeve 100 away from the first insertion section 120. The protrusion 140 is used to be snap-fitted with the card slot 43 of the adapter 42. The adapter 42 is located on the communication device 40 to be connected to the optical cable connection device 10.

[0074] In one embodiment, refer to Figure 4 and Figure 17 As shown, a protrusion 140 is provided on the inner wall of one end of the first sleeve 100 away from the first insertion section 120. The number of protrusions 140 can be two, and the two protrusions 140 are symmetrically distributed along the axial direction on the inner wall of the first sleeve 100. The protrusion 140 is used to be snap-fitted with the card slot 43 of the adapter 42. The adapter 42 is located on the communication device 40 to be connected to the optical cable connection device 10. Specifically, when the optical cable connection device 10 is connected to the communication device 40, the protrusion 140 of the first sleeve 100 will be snap-fitted with the card slot 43 on the adapter 42. The snap-fitting action between the protrusion 140 and the card slot 43 on the adapter 42 can enhance the connection stability between the first sleeve 100 and the adapter 42 and prevent the first sleeve 100 from falling off.

[0075] This application also provides an optical cable assembly, including an optical cable 30 and the optical cable connection device 10 described in any of the above embodiments. Refer to Figure 5 、 Figure 6 and Figure 9As shown, the connector 20 may include a ferrule 21 for connecting with an optical cable 30. The ferrule 21 may have a through hole. When connecting the connector 20 with the optical cable 30, the optical fiber in the optical cable 30 may be inserted into the through hole of the ferrule 21 and fixedly connected to the ferrule 21, so that the front-end optical fiber of the optical cable 30 is fixed within the connector 20. The first sleeve 100 of the optical cable connecting device 10 has a first accommodation cavity 110 for accommodating the connector 20 within the first accommodation cavity 110. The optical cable connecting device 10 and the optical cable 30 are fixedly connected. Specifically, when the second sleeve 200 is inserted into the first sleeve 100, the second insertion section 220 of the second sleeve 200 pushes the elastic member 300 to move into the first insertion section 120 of the first sleeve 100. The first inner wall surface 121 of the first insertion section 120 can squeeze the elastic member 300 to make the inner wall surface of the elastic member 300 fit against and fix the outer wall surface of the optical cable 30. When the optical cable assembly is connected to the communication device of the user terminal, the optical cable connecting device 10 is inserted and connected to the adapter, so that the ferrule 21 of the connector 20 serves as the connection end of the connector 20 to connect with the adapter of the communication device. When two connectors 20 are docked in the adapter, the front ends of the ferrules 21 on the two connectors 20 abut against each other, enabling the end faces of the two optical fibers to be docked, realizing the connection of the optical cable assembly with the communication device and the conduction of optical fiber signals.

[0076] The optical cable assembly provided by the present application can be connected to the adapter on the communication device of the user terminal through the optical cable connecting device 10, thereby realizing fiber-to-the-home and the transmission of optical signals. The optical cable 30 and the connector 20 can be assembled on-site or directly assembled before leaving the factory. After the optical cable 30 and the connector 20 are hermetically fixed, the connector 20 can be assembled and fixed with the housing 11 at the site of fiber-to-the-home. For example, the first sleeve 100 and the elastic member 300 can be first sleeved outside the connector 20, and then the second sleeve 200 is inserted and connected to the first sleeve 100 in the direction towards the first sleeve 100. The second insertion section 220 of the second sleeve 200 pushes the elastic member 300 to move into the first insertion section 120 of the first sleeve 100. The first inner wall surface 121 of the first insertion section 120 can squeeze the elastic member 300 to make the inner wall surface of the elastic member 300 fit against and fix the outer wall surface of the optical cable 30. The optical cable 30 is fixedly connected to the connector 20, and the housing 11 is connected to the connector 20 through the optical cable 30. When assembling and fixing the connector 20 and the housing 11 at the site of fiber-to-the-home, the appropriate length of the optical cable can be determined according to the on-site needs, without causing waste or shortage of the optical cable length. Moreover, the cooperation of the first sleeve 100, the second sleeve 200, and the elastic member 300 enables a good seal to be formed between the optical cable 30 and the optical cable connecting device 10, improving the sealing effect and ultimately enhancing the reliability of the entire optical cable assembly.

[0077] The present application further provides a communication component, which includes an optical cable 30, a communication device 40, and the optical cable connection device 10 of any of the above embodiments. The communication component can be applied to, including but not limited to, optical distribution network (ODN) devices. Taking the application of the communication component in an ODN device as an example, the ODN device is an optical cable network that provides an optical transmission channel between an optical line terminal (OLT) and an optical network unit (ONU). The ODN device can connect one optical line terminal device to multiple optical network unit devices to provide bidirectional transmission of optical signals.

[0078] The communication device 40 can be a fiber access terminal (FAT) or a fiber distribution box (FDB). The main functions of the communication device 40 are to centrally connect optical fibers, protect the optical cable connection points, and distribute optical fiber signals. The communication device 40 can be composed of a housing and a housing base 46. Refer to Figure 14 , Figure 15 and Figure 16 As shown, the communication device 40 has an adapter 42. The adapter 42 can be installed on the housing base 46 or integrally formed with the housing base 46. The communication device 40 can support the access of a variety of different connectors 20. Specifically, the adapter 42 is used to connect to the connector 20. The connector 20 can have different types, and the adapter 42 on the communication device 40 can also be different types of adapters 42. The adapter 42 can connect different types of connectors 20, enabling different types of connectors 20 to be interconnected. The communication device 40 can insert different types of connectors according to different scenario requirements. For example, at the backbone distribution port, a prefabricated optical cable with a factory prefabricated connector can be inserted. At the household port, the optical cable connection device 10 provided in the present application is inserted, which is more convenient and flexible. It can be understood that the communication device 40 also has a communication function. The communication device 40 is a user access point for connecting optical cable components. After the optical cable 30, the optical cable connection device 10, and the adapter  42 are assembled and connected, the optical cable transmits the signal to the communication device 40, and then through the communication device 40, it is transmitted to the user terminal device through the optical cable to achieve signal transmission between optical cables.

[0079] The optical cable 30 and the connector 20 are connected and fixed within the optical cable connection device 10. The optical cable connection device 10 is plugged into the adapter 42, so that the connector 20 is connected to the adapter 42. The optical fiber at the front end of the connector 20 in the axial direction is electrically connected to the adapter 42. The connector 20 has a plugging and unplugging function and can be conveniently connected to or disconnected from the adapter 42. The connector 20 realizes the butt-joint of two optical fibers. Through the plugging of two connectors 20 at both ends of the adapter 42, the connection and transmission of optical signals can be realized. Figure 14 An embodiment of a communication component is shown. The communication device 40 of the communication component is provided with the adapter 42. There can be multiple adapters 42, and there can also be multiple connectors 20. The connector 20 has an optical fiber inside. Outdoors, multiple connectors 20 are connected to multiple adapters 42 through the optical cable connection device 10. Indoors, multiple adapters 42 are connected to multiple other connectors, thereby realizing the conduction of optical signals.

[0080] In the communication component provided by this application, it can be connected to the adapter 42 on the communication device 40 through the optical cable connection device 10, thereby realizing the transmission of optical signals. The optical cable 30 and the connector 20 can be assembled on-site or directly assembled before leaving the factory. After the optical cable 30 and the connector 20 are hermetically fixed, the connector 20 can be assembled and fixed with the housing 11 at the site of fiber-to-the-home. For example, the first sleeve 100 and the elastic member 300 can be first sleeved outside the connector 20, and then the second sleeve 200 is plugged and connected to the first sleeve 100 in the direction towards the first sleeve 100. The second plugging section 220 of the second sleeve 200 pushes the elastic member 300 to move into the first plugging section 120 of the first sleeve 100. The first inner wall surface 121 of the first plugging section 120 can squeeze the elastic member 300 so that the inner wall surface of the elastic member 300 fits against the outer wall surface of the optical cable 30 and fixes the optical cable 30. The optical cable 30 is fixedly connected to the connector 20, and the housing 11 is connected to the connector 20 through the optical cable 30. When assembling and fixing the connector 20 and the housing 11 at the site of fiber-to-the-home, the appropriate length of the optical cable can be determined according to the on-site needs, without causing waste or shortage of the optical cable length. Moreover, the cooperation of the first sleeve 100, the second sleeve 200 and the elastic member 300 forms a good seal between the optical cable 30 and the optical cable connection device 10, improves the sealing effect, and ultimately enhances the reliability of the entire communication component.

[0081] In a possible implementation manner, refer to Figure 16As shown, the adapter 42 is at least partially inserted into the first receiving cavity 110 of the optical cable connection device 10. The adapter 42 can be inserted and connected to the first sleeve 100. The adapter 42 is at least partially inserted into the first receiving cavity 110 of the first sleeve 100. The inner wall of the first receiving cavity 110 has a first connection structure 150, and the outer wall of the adapter 42 has a second connection structure 44. The first connection structure 150 and the second connection structure 44 are detachably connected. The first connection structure 150 can be a structure such as a thread, a snap, or a keyway. The second connection structure 44 can be a structure such as a thread, a snap groove, or a key that cooperates with the first connection structure 150. The specific shapes of the first connection structure 150 and the second connection structure 44 can be interchanged as long as the first connection structure 150 and the second connection structure 44 cooperate with each other to achieve detachable connection. By respectively providing the detachable first connection structure 150 and the second connection structure 44 on the inner wall of the first receiving cavity 110 and the outer wall of the adapter 42, the connection and separation between the adapter 42 and the optical cable connection device 10 can be achieved quickly and simply, which is convenient for daily maintenance or upgrade and replacement.

[0082] Referring to Figure 4 and Figure 17 As shown, in a possible implementation manner, the first connection structure 150 includes a protrusion 140, and the second connection structure 44 includes a card slot 43. The card slot 43 includes a first card slot 43a and a second card slot 43b. The first card slot 43a extends along the axial direction of the adapter 42, and the first card slot 43a extends to the free end face of the adapter 42. The free end of the adapter 42 is the end where the adapter 42 is connected to the optical cable connection device or other connectors. The opening of the first card slot 43a in the axial direction is located on the free end face of the adapter 42. The second card slot 43b extends along the circumferential direction of the adapter 42. The first card slot 43a and the second card slot 43b are connected and communicated. The end of the first card slot 43a away from the optical cable connection device 10 in the axial direction is connected and communicated with the second card slot 43b. The part of the second card slot 43b not connected and communicated with the first card slot 43a is used to engage with the protrusion 140 on the optical cable connection device 10. When the first sleeve 100 of the optical cable connection device 10 is inserted into the adapter 42, the protrusion 140 of the first sleeve 100 slides into the first card slot 43a. As the first sleeve 100 is gradually inserted into the adapter 42, the first sleeve 100 can rotate, so that the protrusion 140 slides in the second card slot 43b until it engages with the second card slot 43b, realizing the connection between the adapter 42 and the optical cable connection device 10.

[0083] In a possible implementation manner, referring to Figure 17As shown, the communication device 40 includes a sealing ring 45. An annular groove can be provided on the outer wall of the adapter 42, and the sealing ring 45 can be arranged in the annular groove. The sealing ring 45 can be an O-ring and can be sleeved in the annular groove on the outer wall of the adapter 42. The sealing ring 45 is sealingly connected between the adapter 42 and the optical cable connection device 10. The inner wall surface of the sealing ring 45 can be sealingly connected to the outer wall surface of the adapter 42, and the outer wall surface of the sealing ring 45 can be sealingly connected to the inner wall surface of the first sleeve 100. By using the sealing ring 45, the sealing effect between the adapter 42 and the optical cable connection device 10 can be improved to meet the IP68 protection level.

[0084] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An optical cable connection device (10), characterized in that, It includes a connector (20), a first sleeve (100), a second sleeve (200) and an elastic member (300); The first sleeve (100) has a through first receiving cavity (110), the connector (20) is received in the first receiving cavity (110), the second sleeve (200) has a through second receiving cavity (210), and the second receiving cavity (210) is used for receiving an optical cable (30); The axial rear end of the first sleeve (100) has a first insertion section (120), the axial front end of the second sleeve (200) has a second insertion section (220), and the first insertion section (120) and the second insertion section (220) are inserted into each other; The first inner wall surface (121) of the first insertion section (120) is retracted towards the axial front end, the elastic member (300) is located in the first insertion section (120) and is in fit connection with the first inner wall surface (121), the axial rear end of the elastic member (300) abuts against the second insertion section (220), and / or, the second inner wall surface (221) of the second insertion section (220) is retracted towards the axial rear end, the elastic member (300) is located in the second insertion section (220) and is in fit connection with the second inner wall surface (221), and the axial front end of the elastic member (300) abuts against the first insertion section (120); The elastic member (300) has a through third receiving cavity (310), the third receiving cavity (310) is used for receiving the optical cable (30), and the inner wall surface of the third receiving cavity (310) is used for squeezing and fixing the optical cable (30).

2. The optical cable connection device (10) according to claim 1, characterized in that, The first inner wall surface (121) and / or the second inner wall surface (221) is a conical surface, and the elastic member (300) is conical or cylindrical.

3. The optical cable connection device (10) according to claim 1 or 2, characterized in that, Internal threads (122) are provided on the inner wall surface of the first insertion section (120), external threads (222) are provided on the outer wall surface of the second insertion section (220), the second insertion section (220) is partially inserted into the first insertion section (120), and the internal threads (122) and the external threads (222) are in threaded fit; The first inner wall surface (121) of the first insertion section (120) is retracted towards the axial front end, the elastic member (300) is located in the first insertion section (120) and is in fit connection with the first inner wall surface (121), and the axial rear end of the elastic member (300) abuts against the second insertion section (220).

4. The optical cable connection device (10) according to claim 1 or 2, characterized in that, The optical cable connecting device (10) includes a connecting rope (400), and the connecting rope (400) is connected between the first sleeve (100) and the second sleeve (200).

5. The optical cable connection device (10) according to claim 4, characterized in that, The connecting rope (400) includes a rope body (410) and a first collar (420) and a second collar (430) located at both ends of the rope body (410). A first annular groove (130) is provided on the outer wall of the first sleeve (100), and the first collar (420) is received in the first annular groove (130). A second annular groove (230) is provided on the outer wall of the second sleeve (200), and the second collar (430) is received in the second annular groove (230).

6. The optical cable connection device (10) according to claim 1 or 2, characterized in that, The axial rear end of the second sleeve (200) has a cable bundling portion (240). The cable bundling portion (240) includes at least two elastic cantilevers (241). There is a notch (242) between adjacent two of the elastic cantilevers (241). The at least two elastic cantilevers (241) enclose a fourth accommodation cavity (243) for accommodating the optical cable (30).

7. The optical cable connection device (10) according to claim 6, characterized in that, A groove (244) extending along the circumferential direction of the cable bundling portion (240) is provided on the outer wall of the elastic cantilever (241).

8. The optical cable connection device (10) according to claim 1 or 2, characterized in that, A protrusion (140) is provided on the inner wall of the first sleeve (100) for engaging with a card slot (43) of an adapter (42). The adapter (42) is located on the communication device (40) to connect with the optical cable connecting device (10).

9. An optical cable assembly, characterized in that, It includes an optical cable (30) and the optical cable connecting device (10) according to any one of claims 1-8 above. The front-end optical fiber of the optical cable (30) is fixed in the connector (20), and the optical cable connecting device (10) is fixedly connected to the optical cable (30).

10. A communication component, characterized in that, It includes an optical cable (30), a communication device (40) and the optical cable connecting device (10) according to any one of claims 1-8 above. The optical cable (30) is connected to and fixed in the optical cable connecting device (10). The communication device (40) has an adapter (42). The optical cable connecting device (10) is plugged into the adapter (42), and the optical fiber at the axial front end of the connector (20) is electrically connected to the adapter (42).

11. The communication component according to claim 10, wherein At least a part of the adapter (42) is plugged into the first accommodation cavity (110) of the optical cable connecting device (10). A first connection structure (150) is provided on the inner wall of the first accommodation cavity (110), and a second connection structure (44) is provided on the outer wall of the adapter (42). The first connection structure (150) and the second connection structure (44) are detachably connected.

12. The communication component according to claim 11, characterized in that, The first connection structure (150) includes a protrusion (140), and the second connection structure (44) includes a card slot (43). The card slot (43) includes a first card slot (43a) and a second card slot (43b). The first card slot (43a) extends along the axial direction of the adapter (42) and extends to the free-end end face of the adapter (42). The second card slot (43b) extends along the circumferential direction of the adapter (42), and the first card slot (43a) and the second card slot (43b) are communicated with each other.

13. The communication component according to claim 11 or 12, characterized in that, The communication device (40) includes a sealing ring (45), the sealing ring (45) is sleeved on the outer wall of the adapter (42), and the sealing ring (45) is sealingly connected between the adapter (42) and the optical cable connection device (10).

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