Preconnector and communication device

Abstract

The present application provides a preconnector and a communication device, the preconnector comprising a connector assembly and an outdoor assembly. The connector assembly comprises a ferrule base and a ferrule that can slide relative to the ferrule base. The ferrule base is used to fix the optical cable, and the ferrule is used to connect with the optical fiber of the optical cable inserted into the ferrule base; so that the optical fiber can be connected to the communication device through the ferrule. The outdoor assembly comprises a main shaft that is sleeved on the ferrule base and fixed to the ferrule base; and a handle sleeve sleeved on the main shaft. The outdoor assembly serves as a connecting piece to be detachably fixedly connected to the communication device to provide a locking force when the communication device is connected. The preconnector provided in the present application is directly connected to the optical cable by adopting the ferrule base, and the handle sleeve and the main shaft are made into a modular structure. When assembling the preconnector, it is only necessary to sleeve the outdoor assembly on the optical cable, which facilitates the assembly of the preconnector.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a preconnector and a communication device. Background Art

[0002] In the process of laying the fiber optic cable in the household section of the FTTH network, the first method is to weld, that is, allocate the fiber ends corresponding to each household in the fiber splitter box, weld the fiber ends of each household and the household optical cable in the fiber splitter box with a fiber optic welding machine, and then lay the household optical cable to each household. At the other end of the household optical cable, it is also necessary to weld on site to connect it to the user terminal box of each household. The problem brought by this method is that it requires special fiber optic welding equipment, which has high technical requirements for operators, and the entire process of laying the household optical cable takes a long time. When this product is connected, the connector is made on site to terminate the household optical cable and connect it to the other end of the adapter to achieve user access, and then the household optical cable is laid to each household. At the other end of the household optical cable, a field connector is also installed to connect it to the user terminal box of each household. This method eliminates the need for specialized equipment such as fusion splicers, and is simple and convenient to operate. Outdoor connectors are core components of optical fiber pre-connection products, and are generally required to meet IP68 protection levels, have anti-vibration and anti-loosening connection locking methods, and have main body materials that are adaptable to outdoor environments. However, existing outdoor optical fiber connectors are composed of multiple parts, which makes the assembly process of outdoor optical fiber connectors more complicated and difficult to assemble. Summary of the invention

[0003] The present application provides a preconnector and a communication device, which are used to simplify the structure of the preconnector and facilitate connection with the communication device.

[0004] In the first aspect, a pre-connector is provided, which is used to connect an optical cable to a communication device. When set, the pre-connector includes a connector assembly and an outdoor assembly. The connector assembly includes a core plug base, and a core plug that is slidably connected to the core plug base and can be locked in a set position, wherein the core plug base is used to fix the optical cable, and the core plug is used to connect with the optical fiber of the optical cable inserted into the core plug base; when connected to the communication device, the core plug is connected to the communication device as the connection end of the pre-connector. The outdoor assembly includes a main shaft that is sleeved on the core plug base and fixedly connected to the core plug base; and a handle sleeve sleeved outside the main shaft. The outdoor assembly is used as a connecting piece to be detachably fixedly connected to the communication device to provide a locking force when the communication device is connected. It can be seen from the above description that the pre-connector provided in the present application is directly connected to the optical cable by adopting the core plug base, and the handle sleeve and the main shaft are made into a modular structure. When assembling the pre-connector, it is only necessary to sleeve the outdoor assembly on the optical cable, which facilitates the assembly of the pre-connector.

[0005] In a specific implementation scheme, the connector assembly further includes a compression sleeve, which is sleeved on the connection between the optical cable and the ferrule base, and a portion of the compression sleeve is fixedly connected to the ferrule base, and another portion is fixedly connected to the optical cable. The compression sleeve is fixedly connected to the optical cable and the ferrule base respectively, thereby improving the reliability of the connection between the optical cable and the ferrule base.

[0006] In a specific implementation method, the end of the ferrule base away from the ferrule is provided with a knurled structure that cooperates with the compression sleeve, thereby improving the stability of the connection between the compression sleeve and the optical cable.

[0007] In a specific possible implementation scheme, the connector assembly further comprises a frame sleeve sleeved on the ferrule, wherein the frame sleeve is fixedly connected to the ferrule base, and the ferrule is partially exposed outside the frame sleeve. The ferrule is protected by the frame sleeve.

[0008] In a specific possible implementation scheme, a compression spring is mounted on the ferrule, one end of the compression spring presses against the ferrule base, and the other end presses against the ferrule, thereby ensuring that the ferrule is connected to the communication device.

[0009] In a specific embodiment, the handle sleeve and the main shaft are sealed by an elastic sealing sleeve to improve the sealing effect of the pre-connector.

[0010] In a specific possible implementation, the outer side wall of the main shaft is provided with a first protrusion, the inner side wall of the handle sleeve is provided with a second protrusion, and the first protrusion and the second protrusion enclose a space for accommodating the elastic sealing sleeve; wherein one end of the elastic sealing sleeve presses against the first protrusion, and the other end presses against the second protrusion. The elastic sealing sleeve is defined by the two protrusions.

[0011] When the pre-connector is assembled with the optical cable, the outdoor assembly is sleeved on the optical cable, and the ferrule base of the connector assembly is fixedly connected to the outer shell of the optical cable, and the ferrule is connected to the optical fiber;

[0012] The outdoor component is sleeved on the connector component by an end of the connector component away from the plug core, and the main shaft is fixedly engaged with the plug core base, so as to facilitate the connection between the connector component and the outdoor component.

[0013] In a specific possible implementation method, the insert base is provided with a protrusion, and the main shaft is provided with a slot that cooperates with the protrusion. The connector assembly is connected to the outdoor assembly through the cooperation between the protrusion and the slot.

[0014] In a specific embodiment, when the preconnector is assembled with the optical cable,

[0015] The outdoor component is sleeved on the plug base by one end of the connector component close to the plug, and the main shaft is fixedly engaged with the plug base, so as to facilitate the connection between the connector component and the outdoor component.

[0016] In a specific implementation scheme, a clamping point is provided on the insert base; an elastic arm is provided in the main shaft, and a clamping slot for clamping and fixing with the clamping point is provided on the elastic arm. The connector assembly is connected to the outdoor assembly through the coordination of the clamping point and the clamping slot.

[0017] In a specific embodiment, it further comprises a traction component, which is sleeved on the connector component and detachably fixedly connected to the connector component before the outdoor component is engaged and fixed with the connector component and is used to drag the optical cable, so as to facilitate dragging of the optical cable.

[0018] In a specific possible implementation scheme, the ferrule base of the connector assembly is provided with an external thread and an O-ring;

[0019] The traction component is provided with an internal thread matched with the external thread, and when the traction component is sleeved on the connector component, the traction component and the connector component are sealed and connected via the O-ring, so as to facilitate the connection between the traction component and the connector component.

[0020] In a specific embodiment, a heat shrink sleeve is further included, wherein a portion of the heat shrink sleeve is sleeved on the optical cable and another portion of the heat shrink sleeve is sleeved on the main shaft, and the connection between the optical cable and the main shaft is sealed, thereby improving the connection stability between the pre-connector and the optical cable.

[0021] In a specific possible implementation, it further includes a heat shrink tail sheath; the heat shrink tail sheath is partially sleeved on the optical cable, and the other part is sleeved on the main shaft, and the connection between the optical cable and the main shaft is sealed; wherein the heat shrink tail sheath is sleeved on the outside of the heat shrink sleeve, thereby improving the connection stability between the preconnector and the optical cable.

[0022] In a specific embodiment, it further comprises a connecting rope which is sleeved on the handle sleeve and can rotate relative to the handle sleeve, and a dust cover connected to the connecting rope; wherein the dust cover is used to connect with the outdoor component and cover the exposed plug core, thereby improving the safety of the plug core.

[0023] In a second aspect, a communication device is provided, the communication device comprising an adapter and a pre-connector as described in any one of the above items that is detachably fixedly connected to the adapter. The pre-connector provided in the embodiment of the present application is directly connected to the optical cable by using a plug base, and the handle sleeve and the main shaft are made into a modular structure. When assembling the pre-connector, it is only necessary to put the outdoor component on the optical cable, which facilitates the assembly of the pre-connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 An exploded schematic diagram of a first pre-connector provided in an embodiment of the present application;

[0025] Figure 2 A cross-sectional view of a connector assembly of a first pre-connector provided in an embodiment of the present application;

[0026] Figure 3 A cross-sectional view of an outdoor component of a first preconnector provided in an embodiment of the present application;

[0027] Figure 4 A cross-sectional view of a first pre-connector provided in an embodiment of the present application;

[0028] Figure 5 An exploded schematic diagram of a second pre-connector provided in an embodiment of the present application;

[0029] Figure 6 A cross-sectional view of a connector assembly of a second pre-connector provided in an embodiment of the present application;

[0030] Figure 7 A cross-sectional view of an outdoor component of a second preconnector provided in an embodiment of the present application;

[0031] Figure 8 A cross-sectional view of a second pre-connector provided in an embodiment of the present application;

[0032] Fig. 9 This is a schematic diagram of the structure of the second pre-connector provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] To facilitate understanding of the pre-connector provided in the embodiment of the present application, its application scenario is first explained. The pre-connector provided in the embodiment of the present application is used to connect an optical cable with a communication device, and the communication device can be a communication device placed indoors or outdoors, which is not limited here. When the communication device is connected to the optical cable, the pre-connector is first assembled with the optical cable, and then connected to the socket of the communication device through the pre-connector, thereby realizing the connection between the optical cable and the communication device.

[0034] First reference Figure 1 , Figure 1 A schematic diagram of a pre-connector provided in an embodiment of the present application is shown. Figure 1It can be seen that the main components of the pre-connector provided in the embodiment of the present application include a connector assembly 120 and an outdoor assembly 130, wherein the connector assembly 120 is used to realize the connection between the communication device and the optical cable 126, and the outdoor assembly 130 is used as a connector to be detachably fixedly connected to the communication device and provide a locking force when connected to the communication device. Of course, the pre-connector also includes some other accessories, such as a dust cover 110, a sleeve 140 or a heat shrink tail sleeve 150. Among them, the dust cover 110, the sleeve 140 and the heat shrink tail sleeve 150 can be used as accessories in the pre-connector, and can be set as needed when in use. The two main components of the pre-connector provided in the embodiment of the present application are first explained below.

[0035] For reference Figure 2 , Figure 2 The connector assembly 120 of the pre-connector provided in the embodiment of the present application is shown. The connector assembly 120 is a modular assembly for connecting the pre-connector and the optical cable 126. The connector assembly 120 is composed of multiple parts. For ease of understanding, Figure 2 A cross-sectional view of the connector assembly 120 is shown in FIG. Figure 2 As shown in the figure, the connector assembly 120 includes a ferrule 122, which is used to connect to the optical cable 126. When the pre-connector is assembled on the optical cable 126, the ferrule 122 is fixedly connected to the optical fiber in the optical cable 126, and the ferrule 122 is connected to the optical fiber signal. When the pre-connector is connected to the communication device, the ferrule 122 is connected to the socket of the communication device as the connection end of the pre-connector to realize the connection between the optical cable 126 and the communication device. Figure 2 The connector assembly 120 further includes a ferrule base 124, which is used to define the components of the ferrule 122 and the optical cable 126. Specifically, the ferrule base 124 is a hollow structure, and has a through cavity inside, and the ferrule 122 and the optical cable 126 are respectively located at opposite ends of the cavity. For the convenience of description, the two opposite ends of the ferrule base 124 are named as the first end and the second end, wherein the end of the ferrule base 124 that cooperates with the ferrule 122 is the first end, and the end of the ferrule base 124 that cooperates with the optical cable 126 is the second end.

[0036] When the optical cable 126 is assembled with the ferrule base 124, a portion of the outer shell of the optical cable 126 is peeled off to expose the optical fiber inside, and the optical fiber is inserted into the cavity. This portion of the optical fiber is used to connect with the ferrule 122; the outer shell portion of the optical cable 126 is fixedly connected to the ferrule base 124 through the compression sleeve 125. Figure 2The pressing sleeve 125 is sleeved on the connection between the optical cable 126 and the ferrule base 124, and a part of the pressing sleeve 125 is fixedly connected to the ferrule base 124, and the other part is fixedly connected to the optical cable 126. Thus, the optical cable 126 and the ferrule base 124 are relatively fixed by the pressing sleeve 125. In order to enhance the stability of the connection between the pressing sleeve 125 and the ferrule base 124, a knurling structure 1242 is further provided at the second end of the ferrule base 124. When the pressing sleeve 125 is sleeved on the ferrule base 124, the knurling structure 1242 cooperates with the pressing sleeve 125 to enhance the friction between the pressing sleeve 125 and the ferrule base 124, thereby enhancing the connection stability between the optical cable 126 and the ferrule base 124. When the above-mentioned pressing sleeve 125 is matched with the core base 124 and the optical cable 126, the pressing sleeve 125 is deformed so that the pressing sleeve 125 and the core base 124 and the optical cable 126 are respectively interference fit, so as to ensure a reliable connection between the optical cable 126 and the core base 124. For example, the pressing sleeve 125 can adopt a plastic sleeve, an elastic plastic sleeve and other deformable structures.

[0037] In addition, it should be understood that the above Figure 2 This is only a specific example of the fixed connection between the optical cable 126 and the ferrule base 124. The fixed connection method between the optical cable 126 and the ferrule base 124 in the pre-connector provided in the embodiment of the present application is not limited to Figure 2 In one embodiment, other connection methods may be used, such as fixing the optical cable 126 and the ferrule base 124 by a clamp, tape, or other components that can achieve a fixed connection.

[0038] Continue to refer Figure 2 When the plug 122 is matched with the communication device, the plug 122 needs to have a certain sliding margin so that the plug 122 can be well matched with the socket of the communication device. Therefore, when the plug 122 is set, a sliding connection between the plug 122 and the base is adopted. Figure 2 As shown in , the ferrule 122 is inserted into the cavity from the first end of the ferrule base 124, and one end of the ferrule 122 inserted into the cavity is connected to the optical fiber inserted into the cavity. The other end of the ferrule 122 is exposed outside the ferrule base 124 for connection with the socket of the communication device.

[0039] When the sliding connection between the ferrule 122 and the ferrule base 124 is implemented, Figure 2 As shown in , the connector assembly 120 also includes a frame sleeve 121, which is a hollow cylindrical structure, and the frame sleeve 121 is fixedly connected to the ferrule base 124, such as the frame sleeve 121 and the ferrule base 124 are fixed by a buckle. Of course, the frame sleeve 121 can also be fixedly connected to the ferrule base 124 by other fixed connection methods.

[0040] After the frame sleeve 121 is fixedly connected to the ferrule base 124, the frame sleeve 121 is sleeved on the ferrule 122, and the frame sleeve 121 and the ferrule base 124 cooperate to limit the sliding range of the ferrule 122. Figure 2 , the hollow interior of the frame sleeve 121 is also provided with a first boss, and the hollow interior of the core base 124 is also provided with a second boss, and when the frame sleeve 121 is assembled on the core base 124, the first boss and the second boss are arranged opposite to each other to enclose a space area. When the core 122 is arranged, the core 122 has a third boss, and the third boss is located in the space area defined by the first boss and the second boss, and the core 122 is sleeved with a compression spring 123, one end of the compression spring 123 presses against the core base 124 (specifically presses against the second boss), and the other end presses against the core 122 (specifically the third boss), and the compression spring 123 is used to push the third boss to press against the first boss, and when the third boss presses against the first boss, as shown Figure 2 As shown in , the ferrule 122 is partially exposed outside the frame 121. When in use, when the ferrule 122 is inserted into the socket, the ferrule 122 slides toward the ferrule base 124, the compression spring 123 is compressed, and the deformation force of the compression spring 123 pushes the ferrule 122 into the socket.

[0041] Continue to refer Figure 2 When the connector assembly 120 provided in the embodiment of the present application is matched with the outdoor assembly 130, it is connected with the outdoor assembly 130 through the ferrule base 124. When setting the ferrule base 124, refer to Figure 1 The plug base 124 is cylindrical in shape, and a fourth convex shoulder is provided in the middle of the plug base 124, so that the plug base 124 forms a structure with a thick middle and thin ends. A protrusion 1241 for engaging with the outdoor component 130 is provided on the fourth convex shoulder.

[0042] For reference Figure 3 and Figure 4 ,in Figure 3 A cross-sectional view of an outdoor assembly 130 provided in an embodiment of the present application is shown. Figure 4 The schematic diagram of the assembly of the connector assembly 120 and the outdoor assembly 130 is shown. Figure 3 The outdoor assembly 130 provided in the embodiment of the present application is a component that is fixedly connected between the connector assembly 120 and the communication device, and its main structure mainly includes a main shaft 132 and a handle sleeve 131. Figure 3 and Figure 4 The structure of the outdoor unit 130 will be described in detail.

[0043] For reference Figure 1 and Figure 3The outdoor assembly 130 provided in the embodiment of the present application mainly includes two components: a main shaft 132 and a handle sleeve 131. The main shaft 132 is a columnar structure, and there is a hollow chamber inside the main shaft 132, and the shape of the chamber matches the external structural features of the plug base 124. Figure 3 The placement direction of the middle outdoor outer component 130 is the reference direction, and the chambers of the main shaft 132 are, from left to right, the second chamber and the first chamber, wherein the first chamber is used to be mounted on one end of the ferrule base 124 connected to the optical cable 126, and the second chamber is used to be mounted on the fourth boss on the ferrule base 124. A slot 1321 structure that cooperates with the protrusion of the ferrule base 124 is also provided in the second chamber. When the outdoor component 130 is assembled on the connector component 120, the outdoor component 130 is sleeved on the optical cable 126, and the ferrule base 124 of the connector component 120 is fixedly connected to the outer shell of the optical cable 126, and the ferrule 122 is connected to the optical fiber; the outdoor component 130 is sleeved on the connector component 120 by the end of the connector component 120 away from the ferrule 122, and the main shaft 132 is fixedly engaged with the ferrule base 124, and specifically, the main shaft 132 and the ferrule base 124 can be fixedly connected together by the engagement of the card slot 1321 and the protrusion 1241. Of course, the engagement of the protrusion 1241 and the card slot 1321 is only a specific example, and other engagement and fixing methods can also be used in the embodiment of the present application for fixing.

[0044] Continue to refer Figure 3 The outdoor assembly 130 provided in the embodiment of the present application further includes a handle sleeve 131, which is used for detachable connection with the socket of the communication device. Figure 3 As shown in , the handle cover 131 also adopts a hollow columnar structure, and the handle cover 131 is sleeved on the main shaft 132 and can be rotatably connected relative to the main shaft 132.

[0045] Continue to refer Figure 3 The handle cover 131 is used to connect with the socket when in use. Therefore, when the handle cover 131 is provided, the handle cover 131 has an accommodating cavity for accommodating the socket. When the pre-connector is assembled and connected with the socket of the communication device, the main shaft 132 is inserted into the socket, and the handle cover 131 is sleeved outside the socket, so that the side wall of the socket is sandwiched between the main shaft 132 and the handle cover 131, and the plug core 122 of the pre-connector is also connected with the socket.

[0046] In order to protect the optical cable 126 during assembly, the main shaft 132 and the handle cover 131 are sealed to improve the protection of the optical cable 126. Figure 3As shown in , the outer wall of the main shaft 132 is provided with a circle of first protrusions, and the inner wall of the corresponding handle sleeve 131 is provided with a circle of second protrusions, and when the handle sleeve 131 is sleeved on the main shaft 132, a receiving space is formed between the first protrusion and the second protrusion, and the receiving space is used to receive the elastic sealing sleeve 133. Figure 3 As shown in the figure, the elastic sealing sleeve 133 is sleeved on the end of the main shaft 132 away from the insert core 122, and one end of the elastic sealing sleeve 133 is pressed against the first protrusion. When the handle sleeve 131 is sleeved on the main shaft 132, the second protrusion of the handle sleeve 131 is pressed against the other end of the elastic sealing sleeve 133, thereby confining the elastic sealing sleeve 133 in the accommodating space defined by the first protrusion and the second protrusion.

[0047] Depend on Figure 3 It can be seen that the elastic sealing sleeve 133 has a certain length along the axis direction of the main shaft 132. Therefore, in addition to sealing the handle sleeve 131 and the main shaft 132, the elastic sealing sleeve 133 can also provide a pressing force for the handle sleeve 131 to be connected to the socket. When the handle sleeve 131 is connected to the socket, the handle sleeve 131 will slide relative to the main shaft 132, and the elastic sealing sleeve 133 will be compressed. When the deformation force of the elastic sealing sleeve 133 is applied to the handle sleeve 131, the deformation force will push the handle sleeve 131 away from the socket, so that it can be used as a locking force to ensure a stable connection between the handle sleeve 131 and the socket.

[0048] Continue to refer Figure 1 and Figure 3 The handle sleeve 131 provided in the embodiment of the present application is also provided with a connecting rope 134. Figure 3 As shown in , the connecting rope 134 is sleeved on the handle sleeve 131 and can rotate relative to the handle sleeve 131. During the specific connection, the handle sleeve 131 is provided with a slot 1321, and one end of the connecting rope 134 is sleeved in the slot 1321 and can rotate in the slot 1321. The other end of the connecting rope 134 is connected to a dust cover 110, which is used to connect to the outdoor component 130 and cover the exposed plug 122 to provide protection for the plug 122. When the pre-connector is not in use, in order to prevent dust from entering the main shaft 132. As shown in Figure 4 As shown in Figure 4 A cross-sectional view of a pre-connector is shown; Figure 4 The figure shows the matching state of the dust cover and the outdoor component 130. Figure 4 The dust cover 110 shown in the figure includes a cap body, which is the main structure of the dust cover. When connected with the outdoor component 130, Figure 4It can be seen that the cap body is inserted into the receiving cavity of the handle cover 131 for matching with the socket, and the side wall of the cap body is provided with a sealing gasket 112. When the cap body is inserted into the receiving cavity, the sealing gasket presses against the inner wall of the handle cover 131, thereby sealing the cap body and the handle cover 131. In addition, a connecting end 111 is also provided at one end of the cap body, and the connecting end 111 is used to connect with a connecting rope 134. The dust cover 110 is connected to the outdoor component 130 through the connecting rope 134. When the dust cover 110 is taken out of the receiving cavity, the dust cover 110 can be connected to the outdoor component 130 through the connecting rope 134 to prevent the dust cover 110 from being lost.

[0049] Continue to refer Figure 1 and Figure 4 The pre-connector provided in the embodiment of the present application may further include a sleeve 140, wherein the sleeve 140 and the dust cover 110 are optional components of the pre-connector and can be set as needed during the setting. The sleeve 140 is used to connect the optical cable 126 and the main shaft 132, such as Figure 1 As shown in , the sleeve 140 is a cylindrical structure, which is inserted into the optical cable 126. During assembly, the sleeve 140 is partially sleeved onto the optical cable 126 and partially sleeved onto the main shaft 132, so that the main shaft 132 and the optical cable 126 can be connected together through the sleeve 140. The sleeve 140 is a heat shrinkable sleeve, which is made of elastic materials, such as plastic, plastic and other materials. When the sleeve 140 is sleeved onto the optical cable 126 and the main shaft 132, the optical cable 126 and the main shaft 132 can be fixed together through the elastic deformation of the sleeve 140, and the connection between the optical cable 126 and the main shaft 132 can also be sealed. Continue to refer to Figure 1 The heat shrinkable tail sheath 150 also adopts a cylindrical structure, and the function of the heat shrinkable tail sheath 150 is similar to that of the sleeve 140, which is equivalent to double-layer protection. During assembly, the heat shrinkable tail sheath 150 is also sleeved on the optical cable 126, and the heat shrinkable tail sheath 150 is partially sleeved on the main shaft 132 and fixedly connected to the main shaft 132. Figure 4 As shown in the figure, when the heat shrinkable tail sheath 150 is sleeved on the optical cable 126 and the main shaft 132, the heat shrinkable tail sheath 150 is sleeved on the outside of the sleeve 140. The portion of the heat shrinkable tail sheath 150 sleeved on the optical cable 126 is sleeved on the sleeve 140 and fixedly connected to the sleeve 140, while the portion of the heat shrinkable tail sheath 150 sleeved on the main shaft 132 is directly fixedly connected to the main shaft 132 and seals the connection between the optical cable 126 and the main shaft 132. Thus, the fixed connection and sealing of the main shaft 132 and the optical cable 126 are achieved through the sleeve 140 and the heat shrinkable tail sheath 150, and the dustproof and waterproof effects are achieved.

[0050] For reference Figure 1 and Figure 4When the preconnector provided in the embodiment of the present application is assembled with the optical cable 126, the heat shrink tail sheath 150 is firstly put on the optical cable 126, then the sleeve 140 is put on the optical cable 126, and then the outdoor component 130 is put on the optical cable 126, and finally the connector component 120 is connected to the optical cable 126. After the connector component 120 is fixedly connected to the optical cable 126 and the optical fiber of the optical cable 126, the main shaft 132 is put on the ferrule base 124 from the side away from the ferrule 122 and fixedly connected to the main shaft 132; then the sleeve 140 is fixed to the main shaft 132, and then the heat shrink tail sheath 150 is fixed to the main shaft 132, thereby completing the fixed connection between the preconnector and the optical cable 126. As can be seen from the above description, the pre-connector assembly 120 provided in the embodiment of the present application adopts a modular design concept, and the connector assembly 120 and the outdoor assembly 130 are modularly separated, and the two are connected by a snap-fit ​​method, specifically, the protrusion between the main shaft 132 and the ferrule base 124 and the card slot 1321 cooperate, so that the assembly process of the pre-connector and the optical cable 126 can be simplified, and the assembly efficiency and process reliability can be improved. In addition, IP68 protection of the optical cable 126 can be achieved by setting multiple sealing pads.

[0051] First reference Figure 5 , Figure 5 A schematic diagram of a pre-connector provided in an embodiment of the present application is shown. Figure 5 It can be seen that the main components of the pre-connector provided in the embodiment of the present application include a connector assembly 220 and an outdoor assembly 210, wherein the connector assembly 220 is used to realize the connection between the communication device and the optical cable 2201, and the outdoor assembly 210 is used as a connector to be detachably fixedly connected to the communication device and provide a locking force when connected to the communication device. Of course, the pre-connector also includes some other accessories, such as a sleeve 230 or a heat shrink tail sheath 240. The sleeve 230 and the heat shrink tail sheath 240 can be used as accessories in the pre-connector and can be set as needed when in use. The following first describes the two main components of the pre-connector provided in the embodiment of the present application.

[0052] For reference Figure 6 , Figure 6 The connector assembly 220 of the pre-connector provided in the embodiment of the present application is shown. The connector assembly 220 is a modular assembly for connecting the pre-connector and the optical cable 2201, which is composed of multiple parts. For ease of understanding, Figure 6 A cross-sectional view of the connector assembly 220 is shown in FIG. Figure 6As shown in the figure, the connector assembly 220 includes a ferrule 223, which is used to connect to the optical cable 2201. When the pre-connector is assembled on the optical cable 2201, the ferrule 223 is fixedly connected to the optical fiber in the optical cable 2201, and the ferrule 223 is connected to the optical fiber signal. When the pre-connector is connected to the communication device, the ferrule 223 is connected to the socket of the communication device as the connection end of the pre-connector to realize the connection between the optical cable 2201 and the communication device. Figure 6 The connector assembly 220 further includes a ferrule base 225, which is used to define the components of the ferrule 223 and the optical cable 2201. Specifically, the ferrule base 225 is a hollow structure, and has a through cavity inside, and the ferrule 223 and the optical cable 2201 are respectively located at opposite ends of the cavity. For the convenience of description, the two opposite ends of the ferrule base 225 are named as the first end and the second end, wherein the end of the ferrule base 225 that cooperates with the ferrule 223 is the first end, and the end of the ferrule base 225 that cooperates with the optical cable 2201 is the second end.

[0053] When the optical cable 2201 is assembled with the ferrule base 225, a portion of the outer shell of the optical cable 2201 is stripped off to expose the internal optical fiber, and a glue-filling sleeve 229 is set between the exposed optical fiber and the outer shell, and the optical fiber is inserted into the cavity. This portion of the optical fiber is used to connect with the ferrule 223; the outer shell portion of the optical cable 2201 is fixedly connected to the ferrule base 225 through a pressing sleeve 227. Figure 6 The pressing sleeve 227 is sleeved on the connection between the optical cable 2201 and the ferrule base 225, and a part of the pressing sleeve 227 is fixedly connected to the ferrule base 225, and the other part is fixedly connected to the optical cable 2201. Thus, the optical cable 2201 and the ferrule base 225 are relatively fixed by the pressing sleeve 227. In order to enhance the stability of the connection between the pressing sleeve 227 and the ferrule base 225, a knurling structure 2253 is further provided at the second end of the ferrule base 225. When the pressing sleeve 227 is sleeved on the ferrule base 225, the knurling structure 2253 cooperates with the pressing sleeve 227 to enhance the friction between the pressing sleeve 227 and the ferrule base 225, thereby enhancing the connection stability between the optical cable 2201 and the ferrule base 225. When the above-mentioned pressing sleeve 227 is matched with the ferrule base 225 and the optical cable 2201, the pressing sleeve 227 is deformed so that the pressing sleeve 227 and the ferrule base 225 and the optical cable 2201 are respectively interference-fitted, so as to ensure a reliable connection between the optical cable 2201 and the ferrule base 225. For example, the pressing sleeve 227 can be a plastic sleeve, an elastic plastic sleeve, etc. that can be deformed. In addition, in order to further improve the connection stability between the ferrule base 225 and the optical cable 2201, a heat shrink sleeve 228 is also installed on the outside of the pressing sleeve 227, such as Figure 6As shown in the figure, the heat shrink sleeve 228 is sleeved on the outside of the compression sleeve 227, and one end of the heat shrink sleeve 228 is fixedly connected to the core base 225, and the other end is fixedly connected to the optical cable 2201, so that when the core base 225 is connected to the optical cable 2201, the core base 225 and the optical cable 2201 are fixed together through the two-layer structure (compression sleeve 227 and heat shrink sleeve 228), thereby enhancing the connection reliability between the core base 225 and the optical cable 2201.

[0054] In addition, it should be understood that the above Figure 6 This is only a specific example of the fixed connection between the optical cable 2201 and the ferrule base 225. The fixed connection method between the optical cable 2201 and the ferrule base 225 in the pre-connector provided in the embodiment of the present application is not limited to Figure 6 In one embodiment, other connection methods may be used, such as fixing the optical cable 2201 and the ferrule base 225 by a clamp, tape, or other components that can achieve a fixed connection.

[0055] Continue to refer Figure 6 When the plug 223 is matched with the communication device, the plug 223 needs to have a certain sliding margin so that the plug 223 can be well matched with the socket of the communication device. Therefore, when the plug 223 is set, a sliding connection between the plug 223 and the base is adopted. Figure 6 As shown in the figure, the ferrule 223 is inserted into the cavity from the first end of the ferrule base 225, and one end of the ferrule 223 inserted into the cavity is connected to the optical fiber inserted into the cavity. The other end of the ferrule 223 is exposed outside the ferrule base 225 for connection with the socket of the communication device.

[0056] When the sliding connection between the ferrule 223 and the ferrule base 225 is specifically implemented, as shown in FIG. Figure 6 As shown in , the connector assembly 220 also includes a frame sleeve 222, which is a hollow cylindrical structure, and the frame sleeve 222 is fixedly connected to the ferrule base 225, such as the frame sleeve 222 and the ferrule base 225 are fixed by a buckle. Of course, the frame sleeve 222 can also be fixedly connected to the ferrule base 225 by other fixed connection methods.

[0057] After the frame sleeve 222 is fixedly connected to the ferrule base 225, the frame sleeve 222 is sleeved on the ferrule 223, and the frame sleeve 222 and the ferrule base 225 cooperate to limit the sliding range of the ferrule 223. Figure 6, the hollow interior of the frame sleeve 222 is also provided with a first boss, and the hollow interior of the core base 225 is also provided with a second boss, and when the frame sleeve 222 is assembled on the core base 225, the first boss and the second boss are arranged opposite to each other to enclose a space area. When the core 223 is arranged, the core 223 has a third boss, and the third boss is located in the space area defined by the first boss and the second boss, and the core 223 is sleeved with a compression spring 224, one end of the compression spring 224 presses against the core base 225 (specifically presses against the second boss), and the other end presses against the core 223 (specifically the third boss), and the compression spring 224 is used to push the third boss to press against the first boss, and when the third boss presses against the first boss, as shown Figure 6 As shown in , the ferrule 223 is partially exposed outside the frame sleeve 222. In use, when the ferrule 223 is inserted into the socket, the ferrule 223 slides toward the ferrule base 225, the compression spring 224 is compressed, and the deformation force of the compression spring 224 pushes the ferrule 223 into the socket.

[0058] Continue to refer Figure 6 When the plug wire is assembled on the plug core base 225, in order to protect the exposed end of the plug core 223, the connector assembly 220 provided in the embodiment of the present application is also provided with a dust cap 221, which covers the end of the plug core 223 and is inserted into the frame sleeve 222 for fixing. When the pre-connector is in use, the dust cap 221 can be pulled out of the frame sleeve 222, so that the plug core 223 is exposed; when the pre-connector is not in use, the dust cap 221 can be covered on the plug core 223 to prevent dust from contaminating the plug core 223.

[0059] Continue to refer Figure 6 When the connector assembly 220 provided in the embodiment of the present application is matched with the outdoor assembly 210, it is connected with the outdoor assembly 210 through the ferrule base 225. When setting the ferrule base 225, refer to Figure 5 The shape of the ferrule base 225 is a cylinder, and a fourth boss is provided in the middle of the ferrule base 225, so that the ferrule base 225 forms a structure that is thick in the middle and thin at both ends, and an O-ring 226 is mounted on the fourth boss. When the outdoor component 210 is mounted on the ferrule base 225, the outdoor component 210 and the ferrule base 225 are sealed by the O-ring 226. In addition, a step structure is formed between the fourth boss of the ferrule base 225 and the tail end of the ferrule base 225 (the end close to the optical cable 2201), and the step structure can be used as a card point 2252 to engage with the outdoor component 210. In addition, a groove 2251 is provided at the end of the fourth boss close to the ferrule 223, and the groove 2251 can be used to engage with the outdoor component 210. Figure 7It can be seen that the outdoor component 2210 can be fixed on the insert base 225 by engaging with the outdoor component 210 at opposite ends of the fourth boss through the clamping point 2252 and the groove 2251.

[0060] For reference Figure 7 and Figure 8 ,in Figure 7 A cross-sectional view of an outdoor assembly 210 provided in an embodiment of the present application is shown. Figure 8 The schematic diagram of the assembly of the connector assembly 220 and the outdoor assembly 210 is shown. Figure 7 The outdoor component 210 provided in the embodiment of the present application is a component that is fixedly connected between the connector component 220 and the communication device, and its main structure mainly includes a main shaft 212 and a handle cover 211. Figure 7 and Figure 8 The structure of the outdoor unit 210 will be described in detail.

[0061] For reference Figure 5 and Figure 7 The outdoor assembly 210 provided in the embodiment of the present application mainly includes two components: a main shaft 212 and a handle sleeve 211. The main shaft 212 is a columnar structure, and there is a hollow chamber inside the main shaft 212, and the shape of the chamber matches the external structural features of the plug base 225. Figure 7 The placement direction of the central spindle 212 is the reference direction, and the chambers of the spindle 212 are, from left to right, the third chamber, the second chamber, and the first chamber, wherein the first chamber is used to be mounted on the end of the ferrule base 225 connected to the optical cable 2201, the second chamber is used to be mounted on the fourth boss on the ferrule base 225, and the third chamber is used to be mounted on the end of the ferrule base 225 close to the ferrule 223. In addition, an elastic arm 2122 is provided in the third chamber to match the clamping point 2252 of the ferrule base 225, and a clamping groove is provided on the elastic arm 2122 to be clamped and fixed with the clamping point 2252; and a protrusion 2121 is provided at the end of the second chamber close to the first chamber to match the groove 2251 of the ferrule base 225. When the outdoor component 210 is assembled on the connector component 220, the outdoor component 210 is inserted into the ferrule base 225 by the end of the connector component 220 close to the ferrule 223, and the main shaft 212 is engaged and fixed with the ferrule base 225. Specifically, the protrusion 2121 is inserted into the groove 2251, and the elastic arm 2122 is engaged with the clamping point 2252 to fix the outdoor component 210 and the ferrule base 225 together. After the assembly, the O-ring 226 of the ferrule base 225 seals the gap between the main shaft 212 and the ferrule base 225.

[0062] Continue to refer Figure 7The outdoor assembly 210 provided in the embodiment of the present application further includes a handle cover 211, and the handle cover 211 is used for detachably connecting with the socket of the communication device. Figure 7 As shown in , the handle cover 211 also adopts a hollow columnar structure, and the handle cover 211 is sleeved on the main shaft 212 and can be rotatably connected relative to the main shaft 212.

[0063] Continue to refer Figure 7 The handle cover 211 is used to connect with the socket when in use. Therefore, when the handle cover 211 is provided, the handle cover 211 specifically has a receiving cavity for receiving the socket. When the pre-connector is assembled in the socket of the communication device, the main shaft 212 is inserted into the socket, and the handle cover 211 is sleeved outside the socket, so that the side wall of the socket is sandwiched between the main shaft 212 and the handle cover 211, and the plug core 223 of the pre-connector is also connected to the socket.

[0064] In order to protect the optical cable 2201 during assembly, the main shaft 212 and the handle cover 211 are sealed to improve the protection of the optical cable 2201. Figure 7 As shown in , the outer wall of the main shaft 212 is provided with a circle of first protrusions, and the corresponding inner wall of the handle sleeve 211 is provided with a circle of second protrusions, and when the handle sleeve 211 is sleeved on the main shaft 212, a receiving space is formed between the first protrusion and the second protrusion, and the receiving space is used to receive the elastic sealing sleeve 213. Figure 7 As shown in the figure, the elastic sealing sleeve 213 is sleeved on the end of the main shaft 212 away from the insert core 223, and one end of the elastic sealing sleeve 213 is pressed against the first protrusion. When the handle sleeve 211 is sleeved on the main shaft 212, the second protrusion of the handle sleeve 211 is pressed against the other end of the elastic sealing sleeve 213, thereby confining the elastic sealing sleeve 213 in the accommodating space defined by the first protrusion and the second protrusion.

[0065] Depend on Figure 7 It can be seen that the elastic sealing sleeve 213 has a certain length along the axis direction of the main shaft 212. Therefore, in addition to sealing the handle sleeve 211 and the main shaft 212, the elastic sealing sleeve 213 can also provide a pressing force for connecting the handle sleeve 211 with the socket. When the handle sleeve 211 is connected to the socket, the handle sleeve 211 will slide relative to the main shaft 212, and the elastic sealing sleeve 213 will be compressed. When the deformation force of the elastic sealing sleeve 213 is applied to the handle sleeve 211, the deformation force will push the handle sleeve 211 away from the socket, so that it can be used as a locking force to ensure a stable connection between the handle sleeve 211 and the socket.

[0066] Continue to refer Figure 5 and Figure 7 The handle sleeve 211 provided in the embodiment of the present application is also provided with a connecting rope 214. Figure 7As shown in , the connecting rope 214 is sleeved on the handle sleeve 211 and can rotate relative to the handle sleeve 211. During the specific connection, a clamping point 2252 is provided on the handle sleeve 211, and one end of the connecting rope 214 is sleeved in the clamping point 2252 and can rotate in the clamping point 2252. The other end of the connecting rope 214 is connected to a dust cover 215, which is used to connect to the outdoor component 210 and cover the exposed plug 223 to provide protection for the plug 223. When the pre-connector is not in use, in order to prevent dust from entering the main shaft 212. As shown in Figure 8 As shown in Figure 8 A cross-sectional view of a pre-connector is shown; Figure 8 FIG. 2 shows the mating state of the dust cover 215 and the outdoor component 210. Figure 8 The dust cover 215 shown in the figure includes a cap body, which is the main structure of the dust cover 215. When connected to the outdoor component 210, Figure 8 It can be seen that the cap body is inserted into the receiving cavity of the handle cover 211 for matching with the socket, and the side wall of the cap body is provided with a sealing gasket 216. When the cap body is inserted into the receiving cavity, the sealing gasket 216 presses against the inner wall of the handle cover 211, thereby sealing the cap body and the handle cover 211. In addition, a connecting end is also provided at one end of the cap body, and the connecting end is used to connect with the connecting rope 214, and the dust cover 215 is connected to the outdoor component 210 through the connecting rope 214. When the dust cover 215 is taken out of the receiving cavity, the dust cover 215 can be connected to the outdoor component 210 through the connecting rope 214 to prevent the dust cover 215 from being lost.

[0067] Continue to refer Figure 5 and Figure 8 The pre-connector provided in the embodiment of the present application may further include a sleeve 230 and a dust cover 215, wherein the sleeve 230 and the dust cover 215 are optional components of the pre-connector and can be set as needed during the setting. The sleeve 230 is used to connect the optical cable 2201 and the main shaft 212, such as Figure 5 As shown in , the sleeve 230 is a cylindrical structure, which is inserted into the optical cable 2201. During assembly, the sleeve 230 is partially sleeved on the optical cable 2201 and partially sleeved on the main shaft 212, so that the main shaft 212 and the optical cable 2201 can be connected together through the sleeve 230, and the connection between the optical cable 2201 and the main shaft 212 can be sealed. The sleeve 140 is a heat shrinkable sleeve, which is made of elastic materials such as plastic, plastic and other materials. When the sleeve 230 is sleeved on the optical cable 2201 and the main shaft 212, the optical cable 2201 and the main shaft 212 can be fixed together by the elastic deformation of the sleeve 230, and it can also have a certain sealing effect. Continue to refer to Figure 5The heat shrinkable tail sheath 240 also adopts a cylindrical structure, and the function of the heat shrinkable tail sheath 240 is similar to that of the sleeve 230, which is equivalent to double-layer protection. During assembly, the heat shrinkable tail sheath 240 is also sleeved on the optical cable 2201, and the heat shrinkable tail sheath 240 is partially sleeved on the main shaft 212 and fixedly connected to the main shaft 212, and the connection between the optical cable 2201 and the main shaft 212 is sealed. Figure 8 As shown in the figure, when the heat shrinkable tail sheath 240 is sleeved on the optical cable 2201 and the main shaft 212, the heat shrinkable tail sheath 240 is nested outside the sleeve 230. The portion of the heat shrinkable tail sheath 240 sleeved on the optical cable 2201 is sleeved on the sleeve 230 and fixedly connected to the sleeve 230, while the portion of the heat shrinkable tail sheath 240 sleeved on the main shaft 212 is directly fixedly connected to the main shaft 212. Thus, the main shaft 212 and the optical cable 2201 are fixedly connected and sealed by the sleeve and the heat shrinkable tail sheath 240, so as to achieve dustproof and waterproof effects.

[0068] For reference Figure 5 and Figure 8 When the preconnector provided in the embodiment of the present application is assembled with the optical cable 2201, the heat shrink tail sheath 240 is firstly put on the optical cable 2201, and then the sleeve 230 is put on the optical cable 2201, and then the outdoor component 210 is put on the optical cable 2201, and finally the connector component 220 is connected to the optical cable 2201. After the connector component 220 is fixedly connected to the optical cable 2201 and the optical fiber of the optical cable 2201, the main shaft 212 is put on the ferrule base 225 from the side away from the ferrule 223 and fixedly connected to the main shaft 212; then the sleeve 230 is fixed to the main shaft 212, and then the heat shrink tail sheath 240 is fixed to the main shaft 212, thereby completing the fixed connection between the preconnector and the optical cable 2201. As can be seen from the above description, the pre-connector assembly 220 provided in the embodiment of the present application adopts a modular design concept, the connector assembly 220 and the outdoor assembly 210 are modularly separated, and the two are connected by a snap-fit ​​method, specifically, the protrusion between the main shaft 212 and the ferrule base 225 and the card point 2252 cooperate, so that the process of assembling the pre-connector and the optical cable 2201 can be simplified, and the assembly efficiency and process reliability can be improved. In addition, IP68 protection of the optical cable 2201 can be achieved by setting multiple sealing pads.

[0069] like Fig. 9 As shown, Fig. 9Another state schematic diagram of the preconnector provided in an embodiment of the present application is shown. The preconnector also includes a traction component. Before the outdoor component 210 is engaged and fixed with the connector component 220, the traction component is sleeved on the connector component 220 and is detachably fixedly connected to the connector component 220 and is used to drag the optical cable 2201. Before the optical cable 2201 is connected to the communication device, the optical cable 2201 is driven to move by pulling the traction component. During the specific connection, the ferrule base 225 of the connector component 220 is also provided with an external thread 2254 and an O-ring 226; the traction component is provided with an internal thread that cooperates with the external thread 2254, and when the traction component is sleeved on the connector component 220, the traction component and the connector component 220 are sealed and connected through an O-ring.

[0070] Continue to refer Fig. 9 The traction assembly provided in the embodiment of the present application includes a first traction shell 320 and a second traction shell 330 fixedly connected to the first traction shell 320, wherein the second traction shell 330 is detachably fixedly connected to the core plug base 225. During connection, an external thread 2254 is provided on the fourth boss of the core plug base 225, and an internal thread is provided on the second traction shell 330. During transfer, the second traction shell 330 is screwed onto the fourth boss to fix the core plug base 225 to the second traction shell 330; an O-ring 226 is also provided on the fourth boss, and when the second traction shell 330 is mounted on the fourth boss, it is sealed and connected to the main shaft assembly through the O-ring 226. In addition, a space is formed between the first traction shell 320 and the second traction shell 330, and a traction head 310 that can rotate relative to the first traction shell 320 is provided in the space, such as Fig. 9 As shown in the figure, the traction head 310 is exposed after passing through the first traction shell 320, and a hook 311 for installing traction tools such as steel wire is provided on the traction head 310. When traction of the optical cable 2201, the damage to the optical cable 2201 caused by torsion can be well reduced. The second traction shell 330 cooperates with the ferrule base 225, and can provide a pulling force of more than 600N through a thread pair. There is an O-ring 226 between the second traction shell 330 and the ferrule base 225, which provides IP68 protection and can be used in underground pipelines with harsh external environments.

[0071] When the optical cable is pulled by the pulling assembly, it can pass through structures such as a pipe or a hole. When the optical cable 2201 is dragged to the communication device, the pulling assembly is removed, and then the outdoor assembly 210 and the connector assembly 220 are engaged and fixed.

[0072] The embodiment of the present application also provides a communication device, which includes an adapter and any of the above-mentioned preconnectors that are detachably fixedly connected to the adapter. The preconnector provided in the embodiment of the present application is directly connected to the optical cable 2201 by using a ferrule base 225, and the handle cover 211 and the main shaft 212 are made into a modular structure. When assembling the preconnector, it is only necessary to put the outdoor component 210 on the optical cable 2201, which facilitates the assembly of the preconnector.

[0073] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A preconnector, characterized in that: include: Connector assembly and outdoor assembly; wherein, The connector assembly comprises: a ferrule base, a ferrule slidably connected to the ferrule base and lockable in a set position, wherein the ferrule base is used to fix the optical cable, and the ferrule is used to connect with the optical fiber of the optical cable inserted into the ferrule base; The outdoor component includes: a main shaft that is sleeved on the plug base and fixedly connected to the plug base; a handle sleeve that is sleeved outside the main shaft, and the handle sleeve has a receiving cavity for accommodating the socket of the communication device; when the preconnector is connected to the socket of the communication device, the main shaft is inserted into the socket, and the handle sleeve is sleeved outside the socket.

2. The preconnector according to claim 1, characterized in that: The connector assembly also includes a compression sleeve, which is sleeved on the connection between the optical cable and the ferrule base, and a part of the compression sleeve is fixedly connected to the ferrule base, and another part of the compression sleeve is fixedly connected to the optical cable.

3. The preconnector according to claim 2, characterized in that: One end of the ferrule base away from the ferrule is provided with a knurled structure matched with the pressing sleeve.

4. The preconnector according to claim 1, characterized in that: The connector assembly further comprises a frame sleeve sleeved on the ferrule; wherein the frame sleeve is fixedly connected to the ferrule base; and the ferrule is partially exposed outside the frame sleeve.

5. The preconnector according to claim 1, characterized in that: The handle sleeve and the main shaft are sealed by an elastic sealing sleeve.

6. The preconnector according to claim 5, characterized in that: The outer wall of the main shaft is provided with a first protrusion, the inner wall of the handle sleeve is provided with a second protrusion, and the first protrusion and the second protrusion form a space for accommodating the elastic sealing sleeve; wherein one end of the elastic sealing sleeve presses against the first protrusion, and the other end presses against the second protrusion.

7. The preconnector according to claim 1, characterized in that: When the pre-connector is assembled with the optical cable, the outdoor assembly is sleeved on the optical cable, and the ferrule base of the connector assembly is fixedly connected to the outer shell of the optical cable, and the ferrule is connected to the optical fiber; The outdoor component is sleeved on the connector component by an end of the connector component away from the plug core; and the main shaft is fixedly engaged with the plug core base.

8. The preconnector according to claim 1, characterized in that: The insert base is provided with a protrusion; and the main shaft is provided with a slot matched with the protrusion.

9. The preconnector according to claim 1, characterized in that: When the pre-connector is assembled with the optical cable, The outdoor component is sleeved on the plug base by an end of the connector component close to the plug, and the main shaft is fixedly engaged with the plug base.

10. The preconnector according to claim 9, characterized in that: A clamping point is arranged on the insert base; an elastic arm is arranged in the main shaft, and a clamping groove for clamping and fixing with the clamping point is arranged on the elastic arm.

11. The preconnector according to claim 9, characterized in that: It also includes a traction component. Before the outdoor component is engaged and fixed with the connector component, the traction component is sleeved on the connector component and is detachably fixedly connected to the connector component and is used to drag the optical cable.

12. The preconnector according to claim 11, characterized in that: The ferrule base of the connector assembly is provided with an external thread and an O-ring; The traction component is provided with an internal thread matched with the external thread, and when the traction component is sleeved on the connector component, the traction component and the connector component are sealed and connected via the O-ring.

13. The preconnector according to claim 1, characterized in that: It also includes a heat shrink sleeve, a portion of which is sleeved on the optical cable, and another portion of which is sleeved on the main shaft, and seals the connection between the optical cable and the main shaft.

14. The preconnector according to claim 13, characterized in that: It also includes a heat shrink tail sheath; the heat shrink tail sheath is partially sleeved on the optical cable, and the other part is sleeved on the main shaft, and the connection between the optical cable and the main shaft is sealed; wherein the heat shrink tail sheath is sleeved on the outside of the heat shrink sleeve.

15. The preconnector according to any one of claims 1 to 14, characterized in that: It also includes a connection rope which is sleeved on the handle sleeve and can rotate relative to the handle sleeve, and a dust cover connected to the connection rope; wherein the dust cover is used to connect with the outdoor component and cover the exposed plug core.

16. A communication device, characterized in that: It comprises an adapter, and a preconnector as described in any one of claims 1 to 15 which is detachably connected to the adapter.

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