Pre-connector, optical cable assembly and communication equipment

Abstract

The invention provides a pre-connector, an optical cable assembly and communication equipment. The pre-connector comprises a connector assembly and an outdoor assembly. The connector assembly comprises an insertion core base and an insertion core capable of sliding relative to the insertion core base. Wherein the insertion core base is used for fixing an optical cable, and the insertion core is used for being connected with an optical fiber, inserted into the insertion core base, of the optical cable; therefore, the optical fiber can be connected with communication equipment through the insertion core. The outdoor assembly comprises a main shaft which is sleeved on the insertion core base and is fixed with the insertion core base. And the handle sleeve is sleeved on the main shaft. The outdoor assembly serves as a connecting piece to be detachably and fixedly connected with the communication equipment so as to provide locking force when the communication equipment is connected. According to the pre-connector provided by the invention, the insertion core base is directly connected with the optical cable, and the handle sleeve and the main shaft are made into a modularized structure, so that when the pre-connector is assembled, only an outdoor assembly needs to be sleeved on the optical cable, and the assembly of the pre-connector is facilitated.

Description

[0001] This application is a divisional application. The application number of the original application is 201911033413.9, and the original application date is October 28, 2019. The entire content of the original application is incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technologies, and in particular, to a pre-connector, an optical cable assembly, and a communication device. Background Art

[0003] During the laying process of the optical cable at the household entrance section of the FTTH network, Method 1 is fusion splicing. That is, the optical fiber ends corresponding to each household are allocated in the distribution box, and the optical fiber ends of each household and the household entrance optical cable are fusion spliced in the distribution box using an optical fiber fusion splicer, and then the household entrance optical cable is laid to each household. At the other end of the household entrance optical cable, on-site fusion splicing also needs to be performed to connect it to the user terminal box of each household. The problem brought by this method is that special optical fiber fusion splicing equipment is required, the technical requirements for operators are relatively high, and the laying process of the entire household entrance optical cable takes a long time. When this product is connected, a connector is made on-site at the household entrance to terminate the household entrance optical cable and connect it to the other end of the adapter to achieve user access, and then the household entrance optical cable is laid to each household. At the other end of the household entrance optical cable, a field connector is also installed to connect it to the user terminal box of each household. This method eliminates professional equipment such as fusion splicers, and the termination is simple and convenient. The outdoor connector is the core component of the optical fiber pre-connection product. Generally, it is required to reach the IP68 protection level, have a connection locking method for anti-vibration and anti-loosening, and have a main body material with outdoor environmental adaptability. However, the existing outdoor optical fiber connectors are composed of multiple parts, which makes the assembly process of the outdoor optical fiber connectors relatively complex and difficult to assemble. Summary of the Invention

[0004] This application provides a pre-connector and a communication device to simplify the structure of the pre-connector and facilitate connection with the communication device.

[0005] In a first aspect, a pre-connector is provided, which is used to connect an optical cable to a communication device. When set up, the pre-connector includes a connector assembly and an outdoor assembly. Among them, the connector assembly includes a ferrule base, and a ferrule that is slidably connected to the ferrule base and can be locked 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 inserted into the ferrule base of the optical cable; when connecting to a communication device, the ferrule serves as the connection end of the pre-connector to connect with the communication device. The outdoor assembly includes a main shaft sleeved on the ferrule base and fixedly connected to the ferrule base; and a handle sleeve sleeved outside the main shaft. Among them, the outdoor assembly serves as a connecting piece to be fixedly connected to the communication device detachably, so as to provide a locking force when connecting the communication device. It can be seen from the above description that the pre-connector provided in this application directly connects the ferrule base with the optical cable, and makes the handle sleeve and the main shaft into a modular structure. When assembling the pre-connector, only the outdoor assembly needs to be sleeved on the optical cable, which facilitates the assembly of the pre-connector.

[0006] In a specific feasible implementation, the connector assembly further includes a ferrule sleeve, the ferrule sleeve is sleeved at the connection between the optical cable and the ferrule base, and a part of the ferrule sleeve is fixedly connected to the ferrule base, and the other part is fixedly connected to the optical cable. By fixedly connecting the ferrule sleeve to the optical cable and the ferrule base respectively, the reliability of the connection between the optical cable and the ferrule base is improved.

[0007] In a specific feasible implementation, a knurled structure for cooperating with the ferrule sleeve is provided at one end of the ferrule base away from the ferrule. The stability of the connection between the ferrule sleeve and the optical cable is improved.

[0008] In a specific feasible implementation, the connector assembly further includes a frame sleeve sleeved on the ferrule; wherein, the frame sleeve is fixedly connected to the ferrule base; and a part of the ferrule is exposed outside the frame sleeve. The ferrule is protected by the frame sleeve.

[0009] In a specific feasible implementation, a compression spring is sleeved on the ferrule, one end of the compression spring abuts against the ferrule base, and the other end abuts against the ferrule, so as to ensure the connection between the ferrule and the communication device.

[0010] In a specific feasible implementation, the handle sleeve and the main shaft are sealed by an elastic seal sleeve. The sealing effect of the pre-connector is improved.

[0011] In a specific feasible implementation, a first protrusion is provided on the outer sidewall of the main shaft, a second protrusion is provided on the inner sidewall of the handle sleeve, 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 abuts against the first protrusion and the other end abuts against the second protrusion. The elastic sealing sleeve is defined by the two protrusions.

[0012] When the pre-connector is assembled with the optical cable, the outdoor component is sleeved on the optical cable, and the ferrule base of the connector component is fixedly connected to the outer sheath of the optical cable, and the ferrule is connected to the optical fiber;

[0013] The outdoor component is sleeved on the connector component from the end of the connector component facing away from the ferrule; and the main shaft is snap-fitted and fixed to the ferrule base. It is convenient to connect the connector component and the outdoor component.

[0014] In a specific feasible implementation, the ferrule base is provided with a protrusion; a slot matching with the protrusion is provided in the main shaft. The connection between the connector component and the outdoor component is realized by the cooperation of the protrusion and the slot.

[0015] In a specific feasible implementation, when the pre-connector is assembled with the optical cable,

[0016] The outdoor component is sleeved on the ferrule base from the end of the connector component close to the ferrule, and the main shaft is snap-fitted and fixed to the ferrule base. It is convenient to connect the connector component and the outdoor component.

[0017] In a specific feasible implementation, a catch point is provided on the ferrule base; an elastic arm is provided in the main shaft, and a slot for snap-fitting with the catch point is provided on the elastic arm. The connection between the connector component and the outdoor component is realized by the cooperation of the catch point and the slot.

[0018] In a specific feasible implementation, a traction component is further included. Before the outdoor component is snap-fitted and fixed to the connector component, the traction component is sleeved on the connector component and is detachably fixedly connected to the connector component and is used for dragging the optical cable. It is convenient to drag the optical cable.

[0019] In a specific feasible implementation, the ferrule base of the connector component is provided with an external thread and an O-ring;

[0020] The traction component is provided with an internal thread matching with the external thread, and when the traction component is sleeved on the connector component, the traction component and the connector component are hermetically connected through the O-ring. It is convenient to connect the traction component and the connector component.

[0021] In a specific feasible implementation, it further includes a heat-shrinkable sleeve. The heat-shrinkable sleeve is partially sleeved on the optical cable, and the other part is sleeved on the main shaft, and seals the connection between the optical cable and the main shaft, improving the connection stability between the pre-connector and the optical cable.

[0022] In a specific feasible implementation, it further includes a heat-shrinkable tail sheath; the heat-shrinkable tail sheath is partially sleeved on the optical cable, and the other part is sleeved on the main shaft, and seals the connection between the optical cable and the main shaft; wherein, the heat-shrinkable tail sheath is sleeved on the outside of the heat-shrinkable sleeve, improving the connection stability between the pre-connector and the optical cable.

[0023] In a specific feasible implementation, it further includes a connecting rope sleeved on the handle sleeve and rotatable 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 ferrule, improving the safety of the ferrule.

[0024] In a second aspect, a communication device is provided. The communication device includes an adapter and the pre-connector as described in any one of the above detachably and fixedly connected to the adapter. The pre-connector provided by the embodiments of the present application directly connects the ferrule base to the optical cable, and makes the handle sleeve and the main shaft into a modular structure. When assembling the pre-connector, it only needs to sleeve the outdoor component on the optical cable, facilitating the assembly of the pre-connector. Description of the Drawings

[0025] Figure 1 It is an exploded view of the first pre-connector provided by the embodiments of the present application;

[0026] Figure 2 It is a cross-sectional view of the connector assembly of the first pre-connector provided by the embodiments of the present application;

[0027] Figure 3 It is a cross-sectional view of the outdoor component of the first pre-connector provided by the embodiments of the present application;

[0028] Figure 4 It is a cross-sectional view of the first pre-connector provided by the embodiments of the present application;

[0029] Figure 5 It is an exploded view of the second pre-connector provided by the embodiments of the present application;

[0030] Figure 6 It is a cross-sectional view of the connector assembly of the second pre-connector provided by the embodiments of the present application;

[0031] Figure 7 It is a cross-sectional view of the outdoor component of the second pre-connector provided by the embodiments of the present application;

[0032] Figure 8 The sectional view of the second pre-connector provided by the embodiment of the present application;

[0033] Figure 9 The structural schematic diagram of the second pre-connector provided by the embodiment of the present application. Detailed implementation manners

[0034] To facilitate the understanding of the pre-connector provided by the embodiment of the present application, first, its application scenario will be described. The pre-connector provided by the embodiment of the present application is used to connect an optical cable and a communication device. The communication device can be a communication device placed indoors or outdoors, and no limitation is made here. When connecting the communication device and the optical cable, first assemble the pre-connector with the optical cable, and then connect the pre-connector with the socket of the communication device, so as to realize the connection between the optical cable and the communication device.

[0035] First, refer to Figure 1 , Figure 1 which shows an exploded schematic diagram of a pre-connector provided by the embodiment of the present application. It can be seen from Figure 1 that the main components of the pre-connector provided by the embodiment of the present application include a connector assembly 120 and an outdoor assembly 130. 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 connecting member to be detachably and fixedly connected to the communication device and provide a locking force when connecting 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 shrinkable tail sheath 150. The dust cover 110, the sleeve 140 and the heat shrinkable tail sheath 150 can be used as accessories in the pre-connector and can be set as needed during use. First, the two main components of the pre-connector provided by the embodiment of the present application will be described below.

[0036] Refer to Figure 2 together, Figure 2 which shows the connector assembly 120 of the pre-connector provided by the embodiment of the present application. The connector assembly 120 is a modular component for connecting the pre-connector and the optical cable 126, and it is composed of multiple parts. For the convenience of understanding, Figure 2 the sectional view of the connector assembly 120 shown in Figure 2 is shown. As shown in 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 of a hollow structure with a through cavity inside. 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 respectively named the first end and the second end. Among them, 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.

[0037] When the optical cable 126 is assembled with the ferrule base 124, a part of the outer sheath of the optical cable 126 is stripped off to expose the internal optical fiber, and the optical fiber is inserted into the cavity. This part of the optical fiber is used for connection with the ferrule 122; the sheathed part of the optical cable 126 is fixedly connected to the ferrule base 124 through a ferrule 125. Continuing to refer to Figure 2 , the ferrule 125 is sleeved on the connection part of the optical cable 126 and the ferrule base 124, and a part of the ferrule 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 through the ferrule 125. To enhance the stability of the connection between the ferrule 125 and the ferrule base 124, a knurling structure 1242 is further provided at the second end of the ferrule base 124. When the ferrule 125 is sleeved on the ferrule base 124, the knurling structure 1242 cooperates with the ferrule 125 to enhance the friction between the ferrule 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 ferrule 125 is assembled with the ferrule base 124 and the optical cable 126, through the deformation of the ferrule 125, an interference fit is formed between the ferrule 125 and the ferrule base 124 and the optical cable 126 respectively to ensure a reliable connection between the optical cable 126 and the ferrule base 124. For example, the ferrule 125 can adopt a plastic sleeve, an elastic plastic sleeve and other structures that can deform.

[0038] In addition, it should be understood that the above Figure 2 is only a specific example of the fixed connection between the optical cable 126 and the ferrule base 124. In the pre-connector provided in the embodiment of the present application, the fixed connection manner between the optical cable 126 and the ferrule base 124 is not limited to Figure 2 one way, and other ways can also be adopted for connection, such as fixedly connecting the optical cable 126 and the ferrule base 124 through a hoop, a tape, or other components that can achieve fixed connection.

[0039] Continuing to refer to Figure 2, when the ferrule 122 is mated with the communication device, the ferrule 122 needs to have a certain sliding margin so that the ferrule 122 can be well mated with the socket of the communication device. Therefore, when the ferrule 122 is set, a sliding connection method between the ferrule 122 and the base is adopted. As Figure 2 shown, 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. And the other end of the ferrule 122 is exposed outside the ferrule base 124 for connecting to the socket of the communication device.

[0040] When specifically implementing the sliding connection between the ferrule 122 and the ferrule base 124, as Figure 2 shown, the connector assembly 120 further includes a ferrule sleeve 121, which is a hollow cylindrical structure, and the ferrule sleeve 121 is fixedly connected to the ferrule base 124, such as being fixedly connected by snap-fitting between the ferrule sleeve 121 and the ferrule base 124. Of course, the ferrule sleeve 121 can also be fixedly connected to the ferrule base 124 by other fixed connection methods.

[0041] After the ferrule sleeve 121 is fixedly connected to the ferrule base 124, the ferrule sleeve 121 is sleeved on the ferrule 122, and the ferrule sleeve 121 and the ferrule base 124 cooperate together to limit the sliding range of the ferrule 122. Continuing to refer to Figure 2 , a first shoulder is also provided inside the hollow of the ferrule sleeve 121, and a second shoulder is also provided inside the hollow of the ferrule base 124. And when the ferrule sleeve 121 is assembled on the ferrule base 124, the first shoulder and the second shoulder are opposite to each other, enclosing a space area. When the ferrule 122 is set, the ferrule 122 has a third shoulder, and the third shoulder is located in the space area defined by the first shoulder and the second shoulder. And a compression spring 123 is sleeved on the ferrule 122. One end of the compression spring 123 abuts against the ferrule base 124 (specifically against the second shoulder), and the other end abuts against the ferrule 122 (specifically the third shoulder). The compression spring 123 is used to push the third shoulder to abut against the first shoulder. And when the third shoulder abuts against the first shoulder, as Figure 2 shown, part of the ferrule 122 is exposed outside the ferrule sleeve 121. In use, when the ferrule 122 is inserted into the socket, the ferrule 122 slides towards the ferrule base 124, the compression spring 123 is compressed, and the ferrule 122 is pushed into the socket by the deformation force of the compression spring 123.

[0042] Continuing to refer to Figure 2 , when the connector assembly 120 provided by the embodiment of the present application is mated with the outdoor assembly 130, it is connected by mating the ferrule base 124 with the outdoor assembly 130. When setting the ferrule base 124, referring to Figure 1, the outer shape of the ferrule base 124 is a cylinder, and a fourth shoulder is provided at the middle position of the ferrule base 124, so that the ferrule base 124 forms a structure with a thick middle and thin ends. And a protrusion 1241 for engaging with the outdoor component 130 is provided on the fourth shoulder.

[0043] Refer to Figure 3 and Figure 4 , where Figure 3 shows a cross-sectional view of the outdoor component 130 provided by the embodiment of the present application, Figure 4 shows an assembly schematic diagram of the connector assembly 120 and the outdoor component 130. First, refer to Figure 3 , the outdoor component 130 provided by the embodiment of the present application is a component for fixedly connecting the connector assembly 120 and the communication device, and its main structure mainly includes a main shaft 132 and a handle sleeve 131. The following will be combined with Figure 3 and Figure 4 to detail the structure of the outdoor component 130.

[0044] Refer to Figure 1 and Figure 3 , the outdoor component 130 provided by the embodiment of the present application mainly includes two components: a main shaft 132 and a handle sleeve 131. Among them, the main shaft 132 is a columnar structure, and the main shaft 132 has a hollow chamber inside, and the shape of the chamber matches the external structural features of the ferrule base 124. Taking Figure 3 the placement direction of the outdoor component 130 in as the reference direction, the chambers of the main shaft 132 are, from left to right: the second chamber and the first chamber, where the first chamber is used to sleeve the end of the ferrule base 124 connected to the optical cable 126, and the second chamber is used to sleeve the fourth shoulder on the ferrule base 124. And a slot 1321 structure for cooperating 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 assembly 120, the outdoor component 130 is sleeved on the optical cable 126, and the ferrule base 124 of the connector assembly 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 assembly 120 from the end of the connector assembly 120 facing away from the ferrule 122, and the main shaft 132 is engaged and fixed with the ferrule base 124. Specifically, the main shaft 132 and the ferrule base 124 can be fixedly connected together through the cooperation of the slot 1321 and the protrusion 1241. Of course, the cooperation between the protrusion 1241 and the slot 1321 is only a specific example, and other engaging and fixing methods can also be used in the embodiment of the present application for fixing.

[0045] Continue to refer to Figure 3 , the outdoor component 130 provided by the embodiment of the present application further includes a handle sleeve 131, and the handle sleeve 131 is used for detachably connecting to the socket of the communication device. AsFigure 3 As shown, the handle sleeve 131 also adopts a hollow columnar structure, and the handle sleeve 131 is sleeved on the main shaft 132 and can be rotatably connected relative to the main shaft 132.

[0046] Continue to refer to Figure 3 , the handle sleeve 131 is used to connect to the socket during use. Therefore, when setting the handle sleeve 131, the handle sleeve 131 has a receiving cavity for receiving the socket. When the pre-connector is assembled and connected to the socket of the communication device, the main shaft 132 is inserted into the socket, and the handle sleeve 131 is sleeved outside the socket, so that the side wall of the socket is clamped between the main shaft 132 and the handle sleeve 131, and the ferrule 122 of the pre-connector is also connected to the socket.

[0047] During assembly, in order to protect the optical cable 126, a sealed connection is adopted between the main shaft 132 and the handle sleeve 131 to improve the protection of the optical cable 126. When setting, as Figure 3 shown, a first protrusion is provided on the outer side wall of the main shaft 132, and a second protrusion is provided on the inner side wall of the corresponding handle sleeve 131. 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 this receiving space is used to receive the elastic sealing sleeve 133. As Figure 3 shown, the elastic sealing sleeve 133 is sleeved on the end of the main shaft 132 away from the ferrule 122, and one end of the elastic sealing sleeve 133 abuts against the first protrusion. When the handle sleeve 131 is sleeved on the main shaft 132, the second protrusion of the handle sleeve 131 abuts against the other end of the elastic sealing sleeve 133, so as to limit the elastic sealing sleeve 133 in the receiving space defined by the first protrusion and the second protrusion.

[0048] It can be seen from Figure 3 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 connection between the handle sleeve 131 and 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 at the same time the elastic sealing sleeve 133 is compressed. When the deformation force of the elastic sealing sleeve 133 is applied to the handle sleeve 131, this deformation force will push the handle sleeve 131 away from the socket, so as to serve as a locking force to make the connection between the handle sleeve 131 and the socket stable.

[0049] Continue to refer to Figure 1 and Figure 3 , a connecting rope 134 is also provided on the handle sleeve 131 provided by the embodiment of the present application, as Figure 3As shown in the figure, the connecting rope 134 is sleeved on the handle sleeve 131 and can rotate relative to the handle sleeve 131. When specifically connecting, a clamping groove 1321 is provided on the handle sleeve 131, and one end of the connecting rope 134 is sleeved in the clamping groove 1321 and can rotate in the clamping groove 1321. The other end of the connecting rope 134 is connected with a dust-proof sleeve 110, and the dust-proof sleeve 110 is used to connect with the outdoor component 130 and cover the exposed ferrule 122 to provide protection for the ferrule 122. When the pre-connector is not in use, in order to prevent dust from entering the main shaft 132. As Figure 4 shown in the figure Figure 4 shows a cross-sectional view of the pre-connector; in Figure 4 the figure shows the mating state of the dust-proof sleeve and the outdoor component 130. In Figure 4 the dust-proof sleeve 110 shown in the figure includes a cap body, which is the main structure of the dust-proof sleeve. When connecting with the outdoor component 130, from Figure 4 it can be seen that the cap body is inserted into the accommodating cavity of the handle sleeve 131 for mating with the socket, and a sealing gasket 112 is provided on the side wall of the cap body. When the cap body is inserted into the accommodating cavity, the sealing gasket presses against the inner side wall of the handle sleeve 131, thereby sealing between the cap body and the handle sleeve 131. In addition, a connecting end 111 is provided at one end of the cap body, and the connecting end 111 is used to connect with the connecting rope 134. The dust-proof sleeve 110 is connected with the outdoor component 130 through the connecting rope 134. When the dust-proof sleeve 110 is taken out of the accommodating cavity, the dust-proof sleeve 110 can be connected with the outdoor component 130 through the connecting rope 134 to prevent the dust-proof sleeve 110 from being lost.

[0050] Continuing to refer to Figure 1 and Figure 4 , the pre-connector provided by the embodiment of the present application may further include a sleeve 140. Among them, the sleeve 140 and the dust-proof sleeve 110 are optional components of the pre-connector and can be set according to needs. The sleeve 140 is used to connect the optical cable 126 and the main shaft 132. As Figure 1 shown in the figure, the sleeve 140 is a cylindrical structure, which is sleeved on the optical cable 126. During assembly, part of the sleeve 140 is sleeved on the optical cable 126 and part is sleeved on 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 and is made of an elastic material, such as plastic, plastic, etc. When the sleeve 140 is sleeved on 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. Continuing to refer to Figure 1The 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.

[0051] For reference Figure 1 and Figure 4 When 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.

[0052] First reference Figure 5 , Figure 5 A schematic diagram of a pre-connector provided in an embodiment of the present application is shown. Figure 5It can be seen that the main components of the pre-connector provided by the embodiments of the present application include a connector assembly 220 and an outdoor assembly 210. The connector assembly 220 is used to connect a communication device to an optical cable 2201, and the outdoor assembly 210 is used as a connecting member to be detachably and 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-shrinkable tail sheath 240. The sleeve 230 and the heat-shrinkable tail sheath 240 can be used as accessories in the pre-connector and can be set as needed during use. First, the two main components of the pre-connector provided by the embodiments of the present application will be described below.

[0053] Referring together to Figure 6 , Figure 6 shows the connector assembly 220 of the pre-connector provided by the embodiments of the present application. The connector assembly 220 is a modular assembly for connecting the pre-connector to the optical cable 2201. It is composed of multiple parts. For ease of understanding, Figure 6 the cross-sectional view of the connector assembly 220 shown in Figure 6 As shown in Figure 6 , 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 in signal conduction with the optical fiber. When the pre-connector is connected to the communication device, the ferrule 223 serves as the connection end of the pre-connector and is connected to the socket of the communication device to realize the connection between the optical cable 2201 and the communication device. Continuing to refer to Figure 6 , the connector assembly 220 also 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 with a through cavity inside. The ferrule 223 and the optical cable 2201 are respectively located at opposite ends of the cavity. For ease of description, the two opposite ends of the ferrule base 225 are respectively named the first end and the second end. Among them, 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.

[0054] When the optical cable 2201 is assembled with the ferrule base 225, a part of the outer shell of the optical cable 2201 is stripped off to expose the internal optical fiber. A potting sleeve 229 is sleeved between the exposed optical fiber and the outer shell. The optical fiber is inserted into the cavity, and this part of the optical fiber is used to connect to the ferrule 223; the sheathed part of the optical cable 2201 is fixedly connected to the ferrule base 225 through a compression sleeve 227. Continuing to refer to Figure 6, The ferrule 227 is sleeved on the connection part between the optical cable 2201 and the ferrule base 225. A part of the ferrule 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 through the ferrule 227. To enhance the connection stability between the ferrule 227 and the ferrule base 225, a knurled structure 2253 is also provided at the second end of the ferrule base 225. When the ferrule 227 is sleeved on the ferrule base 225, the knurled structure 2253 cooperates with the ferrule 227 to enhance the friction between the ferrule 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 ferrule 227 cooperates with the ferrule base 225 and the optical cable 2201, an interference fit is formed between the ferrule 227 and the ferrule base 225 and the optical cable 2201 respectively through the deformation of the ferrule 227 to ensure a reliable connection between the optical cable 2201 and the ferrule base 225. For example, the ferrule 227 can adopt a plastic sleeve, an elastic plastic sleeve, etc., which are structures that can deform. In addition, to further improve the connection stability between the ferrule base 225 and the optical cable 2201, a heat shrinkable tube 228 is also sleeved on the outside of the ferrule 227. As Figure 6 shown, the heat shrinkable tube 228 is sleeved on the outside of the ferrule 227, and one end of the heat shrinkable tube 228 is fixedly connected to the ferrule base 225, and the other end is fixedly connected to the optical cable 2201. Thus, when the ferrule base 225 is connected to the optical cable 2201, the ferrule base 225 and the optical cable 2201 are fixed together through two layers of structures (the ferrule 227 and the heat shrinkable tube 228), enhancing the connection reliability between the ferrule base 225 and the optical cable 2201.

[0055] In addition, it should be understood that the above Figure 6 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 one way, and other ways can also be adopted for connection. For example, the optical cable 2201 and the ferrule base 225 can be fixedly connected through a hoop, a tape, or other components that can achieve fixed connection.

[0056] Continuing to refer to Figure 6 , when the ferrule 223 cooperates with the communication device, a certain sliding margin is required for the ferrule 223 so that the ferrule 223 can cooperate well with the socket of the communication device. Therefore, when setting the ferrule 223, a sliding connection method between the ferrule 223 and the base is adopted. As Figure 6As 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 to the socket of the communication device.

[0057] When specifically implementing the sliding connection between the ferrule 223 and the ferrule base 225, as Figure 6 shown in the figure, the connector assembly 220 further includes a ferrule sleeve 222. The ferrule sleeve 222 is a hollow cylindrical structure, and the ferrule sleeve 222 is fixedly connected to the ferrule base 225, such as being fixedly connected by snap-fitting between the ferrule sleeve 222 and the ferrule base 225. Of course, the ferrule sleeve 222 can also be fixedly connected to the ferrule base 225 by other fixed connection methods.

[0058] After the ferrule sleeve 222 is fixedly connected to the ferrule base 225, the ferrule sleeve 222 is sleeved on the ferrule 223, and the ferrule sleeve 222 and the ferrule base 225 cooperate together to define the sliding range of the ferrule 223. Continuing to refer to Figure 6 , a first shoulder is further provided inside the hollow of the ferrule sleeve 222, and a second shoulder is also provided inside the hollow of the ferrule base 225. When the ferrule sleeve 222 is assembled on the ferrule base 225, the first shoulder and the second shoulder are opposite to each other, enclosing a space area. When the ferrule 223 is arranged, the ferrule 223 has a third shoulder, and the third shoulder is located in the space area defined by the first shoulder and the second shoulder. A compression spring 224 is sleeved on the ferrule 223. One end of the compression spring 224 abuts against the ferrule base 225 (specifically against the second shoulder), and the other end abuts against the ferrule 223 (specifically the third shoulder). The compression spring 224 is used to push the third shoulder to abut against the first shoulder. When the third shoulder abuts against the first shoulder, as Figure 6 shown in the figure, part of the ferrule 223 is exposed outside the ferrule sleeve 222. During use, when the ferrule 223 is inserted into the socket, the ferrule 223 slides towards the ferrule base 225, the compression spring 224 is compressed, and the ferrule 223 is pushed into the socket by the deformation force of the compression spring 224.

[0059] Continuing to refer to Figure 6 , when the patch cord is assembled on the ferrule base 225, in order to protect the exposed end of the ferrule 223, the connector assembly 220 provided by the embodiment of the present application further provides a dust cap 221. The dust cap 221 covers the end of the ferrule 223 and is inserted into the ferrule sleeve 222 for fixation. When the pre-connector is in use, the dust cap 221 can be pulled out from the ferrule sleeve 222, so that the ferrule 223 is exposed; when the pre-connector is not in use, the dust cap 221 can be covered on the ferrule 223 to avoid dust contamination of the ferrule 223.

[0060] Continuing to refer toFigure 6 When the connector component 220 provided by the embodiment of the present application cooperates with the outdoor component 210, it is connected to the outdoor component 210 through the ferrule base 225. When setting the ferrule base 225, also refer to Figure 5 The outer shape of the ferrule base 225 is a cylinder, and a fourth shoulder is provided at the middle position 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 sleeved on the fourth shoulder. When the outdoor component 210 is sleeved on the ferrule base 225, the outdoor component 210 and the ferrule base 225 are sealed through the O-ring 226. In addition, a step structure is formed between the fourth shoulder of the ferrule base 225 and the tail end (the end close to the optical cable 2201) of the ferrule base 225, and this step structure can be used as a locking point 2252 to engage with the outdoor component 210. In addition, a groove 2251 is provided at one end of the fourth shoulder close to the ferrule 223, and this groove 2251 can be used to engage with the outdoor component 210. It can be seen from Figure 7 that the outdoor component 2210 is fixed on the ferrule base 225 by engaging the locking point 2252 and the groove 2251 at opposite ends of the fourth shoulder with the outdoor component 210.

[0061] Also refer to Figure 7 and Figure 8 where Figure 7 shows a cross-sectional view of the outdoor component 210 provided by the embodiment of the present application, Figure 8 shows an assembly schematic diagram of the connector component 220 and the outdoor component 210. First, refer to Figure 7 The outdoor component 210 provided by the embodiment of the present application is a component for fixedly connecting the connector component 220 and the communication device, and its main structure mainly includes a main shaft 212 and a handle sleeve 211. The following will describe the structure of the outdoor component 210 in detail with reference to Figure 7 and Figure 8 The structure of the outdoor component 210 will be described in detail.

[0062] Also refer to Figure 5 and Figure 7 The outdoor component 210 provided by the embodiment of the present application mainly includes two components: a main shaft 212 and a handle sleeve 211. Among them, the main shaft 212 is a columnar structure, and the main shaft 212 has a hollow chamber inside, and the shape of this chamber matches the external structural features of the ferrule base 225. Take Figure 7The placement direction of the middle main shaft 212 is the reference direction. The chambers of the main shaft 212 from left to right are: the third chamber, the second chamber, and the first chamber. The first chamber is used to sleeve one end of the ferrule base 225 connected to the optical cable 2201. The second chamber is used to sleeve on the fourth shoulder of the ferrule base 225. The third chamber is used to sleeve on one end of the ferrule base 225 close to the ferrule 223. And an elastic arm 2122 cooperating with the clamping point 2252 of the ferrule base 225 is also arranged in the third chamber. A clamping groove for engaging and fixing with the clamping point 2252 is arranged on the elastic arm 2122. And a protrusion 2121 cooperating with the groove 2251 of the ferrule base 225 is arranged at one end of the second chamber close to the first chamber. When the outdoor component 210 is assembled on the connector component 220, the outdoor component 210 is sleeved on the ferrule base 225 from one 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 at the same time, the elastic arm 2122 is engaged and cooperated with the clamping point 2252 to fixedly connect the outdoor component 210 and the ferrule base 225 together. After sleeving, the O-ring 226 of the ferrule base 225 seals the gap between the main shaft 212 and the ferrule base 225.

[0063] Continue to refer to Figure 7 , the outdoor component 210 provided by the embodiment of the present application further includes a handle sleeve 211, and the handle sleeve 211 is used for detachably connecting with the socket of the communication device. As Figure 7 shown, the handle sleeve 211 also adopts a hollow columnar structure, and the handle sleeve 211 is sleeved on the main shaft 212 and can be rotatably connected relative to the main shaft 212.

[0064] Continue to refer to Figure 7 , the handle sleeve 211 is used for connecting with the socket during use. Therefore, when setting the handle sleeve 211, the handle sleeve 211 specifically has a receiving cavity for receiving the socket. When the pre-connector is assembled and connected to the socket of the communication device, the main shaft 212 is inserted into the socket, and the handle sleeve 211 is sleeved outside the socket, so that the side wall of the socket is clamped between the main shaft 212 and the handle sleeve 211, and the ferrule 223 of the pre-connector is also connected to the socket.

[0065] During assembly, in order to protect the optical cable 2201, a sealed connection is adopted between the main shaft 212 and the handle sleeve 211 to improve the protection of the optical cable 2201. When setting, as Figure 7 shown, a first protrusion is arranged on the outer side wall of the main shaft 212, and a second protrusion is arranged on the inner side wall of the corresponding handle sleeve 211. 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 for receiving the elastic sealing sleeve 213. As Figure 7As shown in the figure, the elastic sealing sleeve 213 is sleeved on the end of the main shaft 212 away from the ferrule 223, and one end of the elastic sealing sleeve 213 abuts against the first protrusion. When the handle sleeve 211 is sleeved on the main shaft 212, the second protrusion of the handle sleeve 211 abuts against the other end of the elastic sealing sleeve 213, thereby limiting the elastic sealing sleeve 213 within the accommodation space defined by the first protrusion and the second protrusion.

[0066] It can be seen that the elastic sealing sleeve 213 has a certain length along the axial 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 and 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 at the same time, the elastic sealing sleeve 213 is compressed. When the deformation force of the elastic sealing sleeve 213 is applied to the handle sleeve 211, this deformation force will push the handle sleeve 211 away from the socket, thereby serving as a locking force to stably connect the handle sleeve 211 and the socket. Figure 7 As can be seen, the elastic sealing sleeve 213 has a certain length along the axis 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 and 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 at the same time, the elastic sealing sleeve 213 is compressed. When the deformation force of the elastic sealing sleeve 213 is applied to the handle sleeve 211, this deformation force will push the handle sleeve 211 away from the socket, thereby serving as a locking force to stably connect the handle sleeve 211 and the socket.

[0067] Continue to refer to Figure 5 and Figure 7 In the embodiment of the present application, a connecting rope 214 is further provided on the handle sleeve 211. As shown in Figure 7 the figure, the connecting rope 214 is sleeved on the handle sleeve 211 and can rotate relative to the handle sleeve 211. During specific connection, a clamping point 2252 is provided on the handle sleeve 211, and one end of the connecting rope 214 is sleeved within the clamping point 2252 and can rotate within the clamping point 2252. The other end of the connecting rope 214 is connected to a dust-proof sleeve 215, and the dust-proof sleeve 215 is used to connect to the outdoor component 210 and cover the exposed ferrule 223 to provide protection for the ferrule 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 the figure, Figure 8 shows a cross-sectional view of the pre-connector; in Figure 8 the figure shows the mating state of the dust-proof sleeve 215 and the outdoor component 210. The dust-proof sleeve 215 shown in Figure 8 includes a cap body, which is the main structure of the dust-proof sleeve 215. When connecting to the outdoor component 210, by Figure 8It can be seen that the cap body is inserted into the accommodation cavity of the handle sleeve 211 for mating with the socket, and a sealing gasket 216 is provided on the side wall of the cap body. When the cap body is inserted into the accommodation cavity, the sealing gasket 216 presses against the inner side wall of the handle sleeve 211, thereby sealing between the cap body and the handle sleeve 211. In addition, a connection end is provided at one end of the cap body, which is used to connect with the connection rope 214. The dust cover 215 is connected to the outdoor component 210 through the connection rope 214. When the dust cover 215 is taken out of the accommodation cavity, the dust cover 215 can be connected to the outdoor component 210 through the connection rope 214 to prevent the dust cover 215 from being lost.

[0068] Continuing to refer to 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. Among them, the sleeve 230 and the dust cover 215 are optional components of the pre-connector and can be set according to needs. The sleeve 230 is used to connect the optical cable 2201 and the main shaft 212. As shown in Figure 5 , the sleeve 230 is a cylindrical structure, which is sleeved on the optical cable 2201. During assembly, a part of the sleeve 230 is sleeved on the optical cable 2201 and a part is 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 is sealed. The sleeve 140 is a heat-shrinkable sleeve, which is made of elastic materials such as plastics and rubbers. 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 through the elastic deformation of the sleeve 230, and it can also play a certain sealing effect. Continuing to refer to Figure 5 , the heat-shrinkable tail sheath 240 is also 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 protection. During assembly, the heat-shrinkable tail sheath 240 is also sleeved on the optical cable 2201, and a part of the heat-shrinkable tail sheath 240 is 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. As shown in Figure 8 , 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 part 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 part of the heat-shrinkable tail sheath 240 sleeved on the main shaft 212 is directly fixedly connected to the main shaft 212. Thus, the fixed connection and sealing between the main shaft 212 and the optical cable 2201 are realized through the sleeve and the heat-shrinkable tail sheath 240, so as to achieve the effects of dust prevention and waterproofing.

[0069] Referring together to Figure 5 and Figure 8When 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.

[0070] like Figure 9 As shown, Figure 9 Another 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.

[0071] Continue to refer Figure 9, the traction assembly provided by the embodiment of the present application includes a first traction housing 320 and a second traction housing 330 fixedly connected to the first traction housing 320. Among them, the second traction housing 330 is detachably and fixedly connected to the ferrule base 225. When connecting, an external thread 2254 is provided on the fourth shoulder of the ferrule base 225, and an internal thread is provided on the second traction housing 330. During assembly, the second traction housing 330 is screwed onto the fourth shoulder to fixedly connect the ferrule base 225 and the second traction housing 330; an O-ring 226 is also provided on the fourth shoulder. When the second traction housing 330 is sleeved on the fourth shoulder, it is hermetically connected to the main shaft assembly through the O-ring 226. In addition, a space is formed between the first traction housing 320 and the second traction housing 330, and a traction head 310 that can rotate relative to the first traction housing 320 is provided in this space. As shown in Figure 9 , the traction head 310 is exposed after passing through the first traction housing 320, and a hook 311 for installing traction tools such as steel wires is provided on the traction head 310. When traction is applied to the optical cable 2201, it can well reduce the damage that torsion may cause to the optical cable 2201. The second traction housing 330 cooperates with the ferrule base 225, and by means of a thread pair, a tensile force of more than 600 N can be provided. There is an O-ring 226 between the second traction housing 330 and the ferrule base 225, providing IP68 protection and can be applied to underground harsh external environment pipelines.

[0072] When the optical cable is towed through the traction assembly, it can pass through structures such as pipes or holes. When towing the optical cable 2201 to the communication device, the traction assembly is removed, and then the outdoor assembly 210 is snap-fitted and fixed to the connector assembly 220.

[0073] The embodiment of the present application also provides a communication device, which includes an adapter and the pre-connector of any one of the above detachably and fixedly connected to the adapter. The pre-connector provided by the embodiment of the present application directly connects the ferrule base 225 to the optical cable 2201, and makes the handle sleeve 211 and the main shaft 212 into a modular structure. When assembling the pre-connector, only the outdoor assembly 210 needs to be sleeved on the optical cable 2201, which facilitates the assembly of the pre-connector.

[0074] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pre-connector, characterized in that, include: Connector assemblies and outdoor assemblies; The connector assembly comprises: a ferrule base, and a ferrule slidably connected to the ferrule base, 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 comprises: a main shaft which is sleeved on the ferrule base and fixedly connected to the ferrule base, and a handle sleeve which is sleeved outside the main shaft, wherein the handle sleeve has a space for accommodating the main shaft.

2. The pre-connector 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 pre-connector 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 pre-connector 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 pre-connector according to claim 1, characterized in that, The handle sleeve and the main shaft are sealed by an elastic sealing sleeve.

6. The pre-connector 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 pre-connector 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 pre-connector according to claim 1, wherein, The insert base is provided with a protrusion; and the main shaft is provided with a slot matched with the protrusion.

9. The pre-connector 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 pre-connector 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 pre-connector according to claim 9, wherein 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 pre-connector according to claim 11, wherein 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 pre-connector according to claim 1, wherein 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 pre-connector according to claim 1, 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 pre-connector according to any one of claims 1-14, characterized in that, It further includes a connecting rope sleeved on the handle sleeve and rotatable relative to the handle sleeve, and a dust cover connected to the connecting rope; wherein, the dust cover is used for connecting with the outdoor component and covering the exposed ferrule.

16. The pre-connector according to any one of claims 1-14, characterized in that, Along the axial direction of the main shaft, the length of the main shaft is greater than the length of the handle sleeve.

17. The pre-connector according to any one of claims 1-14, characterized in that, Along the axial direction of the main shaft, the front end of the main shaft protrudes from the front end of the handle sleeve, and the rear end of the main shaft protrudes from the rear end of the handle sleeve.

18. The pre-connector according to any one of claims 1-14, characterized in that, The main shaft has a hollow chamber inside, and the chamber includes a first chamber and a third chamber, wherein the first chamber is used for sleeving one end of the ferrule base connected to the optical cable, and the third chamber is used for sleeving one end of the ferrule base close to the ferrule.

19. The pre-connector according to claim 18, wherein The chamber further includes a second chamber, and the second chamber is used for sleeving on the shoulder of the ferrule base.

20. The pre-connector according to claim 18 or 19, characterized in that, An elastic arm cooperating with the ferrule base is arranged in the third chamber.

21. The pre-connector according to claim 20, characterized in that, A clamping groove for clamping and fixing with the clamping point on the ferrule base is arranged on the elastic arm.

22. The pre-connector according to claim 19, characterized in that, A protrusion cooperating with the groove of the ferrule base is arranged at one end of the second chamber close to the first chamber.

23. An optical cable assembly, characterized in that, It includes an optical cable and the pre-connector according to any one of claims 1-22, and the optical cable is connected to the connector assembly of the pre-connector.

24. A communication device, characterized in that, It includes an adapter and the optical cable assembly according to claim 23 detachably connected to the adapter.

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