Optical fiber connection assembly and pre-terminating system

Abstract

The utility model discloses an optical fiber connection assembly and a pre-termination system, and belongs to the field of communication. The optical fiber connecting assembly comprises an optical fiber connector and an optical fiber adapter, the optical fiber connector is provided with a first inserting part, and the first inserting part is provided with a first strip-shaped locking groove; the optical fiber adapter comprises an adapter main body and a strip-shaped locking piece, the adapter main body is provided with a first plugging channel for the first plugging part to be plugged in, the strip-shaped locking piece and the first strip-shaped locking groove both extend along the circumferential direction of the first plugging channel, the strip-shaped locking piece has a locking state and an unlocking state, and when the first plugging part is plugged in the first plugging channel, the strip-shaped locking piece is locked in the locking state and unlocked in the unlocking state. Under the condition that the strip-shaped locking piece is in a locking state, at least part of the strip-shaped locking piece extends into the first strip-shaped locking groove so as to connect the optical fiber connector and the optical fiber adapter; and under the condition that the strip-shaped locking piece is in an unlocking state, the strip-shaped locking piece can be separated from the first strip-shaped locking groove, so that the first inserting part is separated from the first inserting channel or inserted into the first inserting channel.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to an optical fiber connection component and a pre-terminated system. Background Art

[0002] With the continuous development of optical communication technologies and the increasing user requirements, the construction of FTTR (Fiber to the Room) is an important part, which can achieve gigabit optical fiber access in rooms.

[0003] To ensure optical fiber access to households, outdoor optical fiber connectors and optical fiber adapters have become necessary components in the distribution section and the household section of the access network. The optical fiber connector is used to connect optical fibers, and the adapter is used to convert, transfer, or extend different types of optical fiber connectors. The optical fiber connector and the optical fiber adapter can be directly plugged and mated to connect two optical fibers, or connect the optical fiber to a predetermined position. In the prior art, during the process of inserting the optical fiber connector into the optical fiber adapter, the two are snap-connected to keep them relatively fixed, but usually the connection stability is poor, and the optical fiber connector is prone to disengage from the optical fiber adapter. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide an optical fiber connection component and a pre-terminated system, which can solve the problem of poor connection stability between the optical fiber connector and the optical fiber adapter in the related art.

[0005] In a first aspect, the embodiments of this application provide an optical fiber connection component, including an optical fiber connector, the optical fiber connector is provided with a first insertion portion, and the first insertion portion is provided with a first strip-shaped locking groove;

[0006] An optical fiber adapter, the optical fiber adapter includes an adapter body and a strip-shaped locking member, the adapter body is provided with a first insertion channel for the first insertion portion to be inserted into, the strip-shaped locking member and the first strip-shaped locking groove both extend along the circumferential direction of the first insertion channel, and the strip-shaped locking member has a locking state and an unlocking state;

[0007] When the first insertion portion is inserted into the first insertion channel and the strip-shaped locking member is in the locking state, at least a part of the strip-shaped locking member extends into the first strip-shaped locking groove to connect the optical fiber connector and the optical fiber adapter;

[0008] When the strip-shaped locking member is in the unlocking state, the strip-shaped locking member can disengage from the first strip-shaped locking groove, so that the first insertion portion disengages from the first insertion channel or is inserted into the first insertion channel.

[0009] Second aspect, an embodiment of the present application further provides a pre-terminated system, including a pre-terminated body and the above-mentioned optical fiber connection component, and the pre-terminated body is connected to the optical fiber adapter of the optical fiber connection component.

[0010] In the embodiment of the present application, a first strip-shaped locking groove is provided on the first insertion part of the optical fiber connector, and a strip-shaped locking piece is provided on the optical fiber adapter. When the optical fiber connector is inserted into the optical fiber adapter, the optical fiber connector and the optical fiber adapter are locked and matched through the strip-shaped locking piece and the first strip-shaped locking groove, preventing the optical fiber connector from detaching from the optical fiber adapter and realizing the connection between the optical fiber connector and the optical fiber adapter. Moreover, the strip-shaped locking piece and the first strip-shaped locking groove respectively extend along the circumferential direction of the first insertion channel, so the locking and matching area between the two in the circumferential direction of the first extension protrusion is larger during the locking and matching, which is beneficial to improving the connection stability and effectively avoiding the optical fiber connector from detaching from the optical fiber adapter. Description of the Drawings

[0011] Figure 1 is a cross-sectional view of the optical fiber connection component when the strip-shaped locking piece is in the locked state disclosed in the embodiment of the present application;

[0012] Figure 2 is a cross-sectional view of the optical fiber connection component when the strip-shaped locking piece is in the unlocked state disclosed in the embodiment of the present application;

[0013] Figure 3 is an exploded view of the optical fiber connection component disclosed in the embodiment of the present application;

[0014] Figure 4 is a schematic structural diagram of the optical fiber connection component disclosed in the embodiment of the present application;

[0015] Figure 5 is a schematic structural diagram of the optical fiber adapter disclosed in the embodiment of the present application;

[0016] Figure 6 is a cross-sectional view of the optical fiber adapter disclosed in the embodiment of the present application;

[0017] Figure 7 is an exploded view of the optical fiber adapter and the first dust cap disclosed in the embodiment of the present application;

[0018] Figure 8 is a schematic structural diagram of the optical fiber adapter from another perspective disclosed in the embodiment of the present application;

[0019] Figure 9 is a schematic diagram of a partial structure of the optical fiber adapter disclosed in the embodiment of the present application;

[0020] Figure 10 is a schematic diagram of another partial structure of the optical fiber adapter disclosed in the embodiment of the present application;

[0021] Figure 11 is one of the schematic structural diagrams of the movable frame sleeve disclosed in the embodiments of the present application;

[0022] Figure 12 is the second of the schematic structural diagrams of the movable frame sleeve disclosed in the embodiments of the present application;

[0023] Figure 13 is the schematic structural diagram of the adapter body disclosed in the embodiments of the present application;

[0024] Figure 14 is one of the schematic structural diagrams of the mating structure between the optical fiber adapter and the first dust cap disclosed in the embodiments of the present application;

[0025] Figure 15 is the second of the schematic structural diagrams of the mating structure between the optical fiber adapter and the first dust cap disclosed in the embodiments of the present application;

[0026] Figure 16 is the cross-sectional view of the optical fiber adapter and the first dust cap disclosed in the embodiments of the present application;

[0027] Figure 17 is the schematic structural diagram of the first dust cap disclosed in the embodiments of the present application;

[0028] Figure 18 is the cross-sectional view of the first dust cap disclosed in the embodiments of the present application;

[0029] Figure 19 is the schematic structural diagram of the optical fiber connector disclosed in the embodiments of the present application;

[0030] Figure 20 is the exploded view of the optical fiber connector and the second dust cap disclosed in the embodiments of the present application;

[0031] Figure 21 is the front view of the mating structure between the optical fiber connector and the second dust cap disclosed in the embodiments of the present application;

[0032] Figure 22 is the schematic structural diagram of the mating structure between the optical fiber connector and the second dust cap disclosed in the embodiments of the present application;

[0033] Figure 23 is the cross-sectional view of the optical fiber connector and the second dust cap disclosed in the embodiments of the present application;

[0034] Figure 24 is the cross-sectional view of the mating structure between the optical fiber connector and the optical fiber disclosed in the embodiments of the present application;

[0035] Figure 25 is the schematic structural diagram of the second dust cap disclosed in the embodiments of the present application;

[0036] Figure 26It is a schematic diagram of the cooperation between the first dust cap and the second dust cap disclosed in the embodiments of the present application;

[0037] Figure 27 It is a schematic diagram of the connection between the pre-terminated connector and the optical fiber connection assembly disclosed in the embodiments of the present application;

[0038] Figure 28 It is a cross-sectional view of the connection structure between the pre-terminated connector and the optical fiber connection assembly disclosed in the embodiments of the present application;

[0039] Figure 29 It is a schematic diagram of the connection between the optical fiber adapter and the pre-terminated body disclosed in the embodiments of the present application;

[0040] Figure 30 It is a schematic diagram of the structure of the pre-terminated system disclosed in the embodiments of the present application.

[0041] Description of reference numerals:

[0042] 10 - Optical fiber connection assembly,

[0043] 100 - Optical fiber adapter,

[0044] 110 - Adapter body, 111 - First extension protrusion, 111a - First insertion channel, 111b - Strip-shaped through hole, 111c - First guide groove, 111d - Second guide groove, 112 - Connection head,

[0045] 120 - Strip-shaped locking piece,

[0046] 130 - Movable frame sleeve, 131 - Limiting structure, 131a - Limiting surface, 1311 - Limiting inclined surface, 1312 - First limiting cylindrical surface, 132 - Second guide protrusion,

[0047] 140 - Elastic member, 141 - First spring, 142 - Second spring,

[0048] 150 - Pulling member, 161 - Snap ring, 162 - Pressing ring,

[0049] 170 - Locking nut,

[0050] 200 - Optical fiber connector,

[0051] 210 - Connector body, 211 - First insertion part, 2111 - First strip-shaped locking groove, 2112 - First guide protrusion,

[0052] 220 - Outer frame body, 221 - Locking protrusion,

[0053] 230 - Tail sheath,

[0054] 240 - ferrule, 250 - ferrule tail handle, 260 - ferrule spring, 270 - second sealing ring, 280 - third sealing ring,

[0055] 300 - first dust cap, 310 - second plugging part, 311 - second strip-shaped locking groove, 320 - first sealing ring,

[0056] 400 - second dust cap, 410 - second extending convex part, 410a - second plugging channel, 411 - locking groove, 411a - first guiding groove, 411b - second guiding groove, 411c - locking slot, 412 - positioning mark,

[0057] 510 - first flexible connecting piece, 520 - second flexible connecting piece,

[0058] 20 - pre-termination body, 21 - pre-termination connector,

[0059] 30 - optical fiber. Detailed implementation manners

[0060] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0061] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. generally belong to the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after.

[0062] Next, in conjunction with the accompanying drawings, the optical fiber connection assembly and pre-termination system provided by the embodiments of the present application will be described in detail through specific embodiments and their application scenarios.

[0063] Please refer to Figures 1 - 30 , the optical fiber connection assembly 10 disclosed in the embodiments of the present application is applied to an outdoor pre-termination system. The optical fiber connection assembly 10 includes an optical fiber connector 200 and an optical fiber adapter 100. The optical fiber connector 200 is used to connect the optical fiber 30, and the optical fiber adapter 100 is inserted and matched with the optical fiber connector 200 to convert, transfer or extend different types of optical fiber connectors 200.

[0064] Reference Figure 19 and Figure 20 As shown, the fiber optic connector 200 is provided with a first plugging portion 211, and the first plugging portion 211 is provided with a first strip-shaped locking groove 2111. The fiber optic connector 200 is connected to the fiber optic adapter 100 through the first strip-shaped locking groove 2111. Optionally, the first plugging portion 211 may be a cylindrical plugging portion, and the first strip-shaped locking groove 2111 extends along the circumferential direction of the cylindrical plugging portion. The first strip-shaped locking groove 2111 may be an arc-shaped locking groove or an annular locking groove; the first plugging portion 211 may also be a prismatic plugging portion, and the first strip-shaped locking groove 2111 extends along the circumferential direction of the prismatic plugging portion. The first strip-shaped locking groove 2111 may be a locking groove extending in a straight line or a bent-shaped locking groove; of course, the first plugging portion 211 may also be a structure of other shapes.

[0065] In this embodiment, reference Figure 19 and Figure 20 As shown, the fiber optic connector 200 includes a connector body 210, an outer frame 220 and a tail sheath 230. Among them, the connector body 210 is provided with a first plugging portion 211. The outer frame 220 is sleeved outside the connector body 210, and the outer frame 220 is provided with a connection structure for connecting the optical fiber 30. The tail sheath 230 is sleeved outside the connection structure and the optical fiber 30 to protect the connection part. Inside the first plugging portion 211, there are an insert core 240, an insert core tail handle 250 and an insert core spring 260. The insert core 240 extends out of the first plugging portion 211, and the insert core 240 can be inserted into the adapter body 110.

[0066] Optionally, a second sealing ring 270 is provided outside the first plugging portion 211 to seal the gap between the first plugging portion 211 and the adapter body 110, or to seal the gap between the first plugging portion 211 and the second dust cap 400; a third sealing ring 280 is also provided outside the connector body 210 to seal the gap between the connector body 210 and the outer frame 220.

[0067] Reference Figure 5 As shown, the fiber optic adapter 100 includes an adapter body 110. The adapter body 110 is provided with a first plugging channel 111a for the first plugging portion 211 to be inserted. Both the strip-shaped locking member 120 and the first strip-shaped locking groove 2111 extend along the circumferential direction of the first plugging channel 111a. Specifically, the adapter body 110 is provided with a first extending convex portion 111 extending along its own axial direction. The first extending convex portion 111 is an annular structure, and the first extending convex portion 111 forms the first plugging channel 111a. Optionally, the first extending convex portion 111 may be a circular ring structure or a square ring structure.

[0068] refer to Figures 7 - 9 As shown, the optical fiber adapter 100 further includes a strip-shaped locking member 120, which is used to cooperate with the first strip-shaped locking groove 2111. Both the strip-shaped locking member 120 and the first strip-shaped locking groove 2111 extend along the circumference of the first plug-in channel 111a, that is, along the circumference of the first extending protrusion 111. In this embodiment, the circumference of the first plug-in channel 111a is the same as the circumference of the first plug-in portion 211. In the embodiment in which the first plug-in portion 211 is a cylindrical plug-in portion, the strip-shaped locking member 120 may be an arc-shaped locking member; in the embodiment in which the first plug-in portion 211 is a prismatic plug-in portion, the strip-shaped locking member 120 may be a locking member extending along a straight line. In short, the extending direction of the strip-shaped locking member 120 is the same as the extending direction of the first strip-shaped locking groove 2111, and it can at least partially extend into the first strip-shaped locking groove 2111.

[0069] The strip-shaped locking member 120 has a locked state and an unlocked state. When the strip-shaped locking member 120 is in the locked state, the optical fiber connector 200 and the optical fiber adapter 100 can be connected; when the strip-shaped locking member 120 is in the unlocked state, the optical fiber connector 200 and the optical fiber adapter 100 can be separated.

[0070] The matching state of the optical fiber adapter 100 and the optical fiber connector 200 is shown in FIG. Figure 1 and Figure 2 As shown, when the first plug-in portion 211 is inserted into the first plug-in channel 111a and the strip-shaped locking member 120 is in a locked state, refer to Figure 1 As shown, at least a portion of the strip-shaped locking member 120 extends into the first strip-shaped locking groove 2111. Optionally, a portion of the strip-shaped locking member 120 may extend into the first strip-shaped locking groove 2111, or the entire strip-shaped locking member 120 may extend into the first strip-shaped locking groove 2111, thereby connecting the optical fiber connector 200 and the optical fiber adapter 100. When the strip-shaped locking member 120 is in an unlocked state, that is, when the strip-shaped locking member 120 avoids the first plug-in portion 211, refer to Figure 2 As shown, the strip locking member 120 can be separated from the first strip locking groove 2111. At this time, the first plug-in portion 211 loses the restriction effect of the strip locking member 120, and the first plug-in portion 211 is separated from the first plug-in channel 111a or inserted into the first plug-in channel 111a.

[0071] Specifically, during the process of inserting the optical fiber connector 200 into the optical fiber adapter 100, the strip locking member 120 is in an unlocked state, so that the strip locking member 120 avoids the first plug-in portion 211, ensuring that the first plug-in portion 211 is smoothly inserted into the first plug-in channel 111a, and when the first plug-in portion 211 is inserted to a position where the first strip locking groove 2111 and the strip locking member 120 are opposite, the strip locking member 120 switches to a locked state, that is, at least a portion of the strip locking member 120 extends into the first strip locking groove 2111, and the strip locking member 120 clamps the first plug-in portion 211, preventing the first plug-in portion 211 from being reversely disengaged from the first plug-in channel 111a, thereby achieving the connection between the optical fiber connector 200 and the optical fiber adapter 100. In this way, the optical fiber connector 200 is prevented from being disengaged from the optical fiber adapter 100 through the locking cooperation between the strip locking member 120 and the first strip locking groove 2111.

[0072] In the embodiment of the present application, the strip-shaped locking member 120 and the first strip-shaped locking groove 2111 extend respectively along the circumference of the first plug-in channel 111a, so when locked together, the locking area of ​​the two in the circumferential direction of the first plug-in channel 111a is larger, which is beneficial to improving the connection stability and effectively preventing the optical fiber connector 200 from detaching from the optical fiber adapter 100.

[0073] In an optional embodiment, the groove wall surface of the first strip-shaped locking groove 2111 is formed by a plane, and the surface of the strip-shaped locking member 120 is also formed by a plane.

[0074] In another embodiment, reference Figure 1 and Figure 2 As shown, at least one of the groove wall surface of the first strip-shaped locking groove 2111 and the surface of the strip-shaped locking member 120 includes a strip-shaped arc surface, and the strip-shaped locking member 120 extends into the first strip-shaped locking groove 2111 under the guidance of the strip-shaped arc surface. Specifically, only the groove wall surface of the first strip-shaped locking groove 2111 includes a strip-shaped arc surface; or, only the surface of the strip-shaped locking member 120 includes a strip-shaped arc surface; or, both the groove wall surface of the first strip-shaped locking groove 2111 and the surface of the strip-shaped locking member 120 include a strip-shaped arc surface. Optionally, when the strip-shaped locking member 120 extends into the first strip-shaped locking groove 2111, the strip-shaped arc surface of the first strip-shaped locking groove 2111 fits with the strip-shaped arc surface of the strip-shaped locking member 120.

[0075] Optionally, the cross section of the strip-shaped arc surface along the first direction is an arc line, the first direction is parallel to the axis of the first insertion channel 111a, and the first direction is perpendicular to the plane where the strip-shaped locking member 120 is located. In other words, the shape of the cross section of the strip-shaped locking member 120 includes an arc line. Further optionally, referring to Figure 8 As shown, the strip-shaped locking member 120 may be an arc-shaped cylindrical structure, and the cross section of the strip-shaped locking member 120 along the first direction is a circular structure.

[0076] In this embodiment, when the first insertion portion 211 is inserted into the position opposite to the first strip-shaped locking groove 2111 and the strip-shaped locking member 120, the strip-shaped arc surface guides the process of the strip-shaped locking member 120 extending into the first strip-shaped locking groove 2111, ensuring that the strip-shaped locking member 120 accurately extends into the first strip-shaped locking groove 2111, and realizing the accurate locking of the first insertion portion 211 by the strip-shaped locking member 120.

[0077] In an alternative embodiment, the number of the strip-shaped locking members 120 is one.

[0078] In another embodiment, the number of the strip-shaped locking members 120 is multiple, and the strip-shaped locking members 120 are spaced apart in the circumferential direction of the first insertion channel 111a, and each strip-shaped locking member 120 can extend into the first strip-shaped locking groove 2111 respectively. Optionally, as shown in Figure 19 In the circumferential direction of the first insertion channel 111a, the length of the first strip-shaped locking groove 2111 is greater than the length of the strip-shaped locking member 120, and each strip-shaped locking member 120 extends into the annular locking groove respectively. Further optionally, the first strip-shaped locking groove 2111 can be an annular locking groove; or, in the circumferential direction of the first insertion channel 111a, the length of the first strip-shaped locking groove 2111 is equal to the length of the strip-shaped locking member 120, the first strip-shaped locking groove 2111 is an arc-shaped locking groove or a locking groove extending along a straight line, the number of the first strip-shaped locking grooves 2111 is multiple, and the strip-shaped locking members 120 correspond to the first strip-shaped locking grooves 2111 one by one.

[0079] In this embodiment, the number of the strip-shaped locking members 120 increases, and each strip-shaped locking member 120 can lock different positions of the first insertion portion 211 in the circumferential direction of the first insertion channel 111a respectively, further increasing the matching area between the strip-shaped locking member 120 and the first strip-shaped locking groove 2111, which is beneficial to further improving the connection stability between the optical fiber connector 200 and the optical fiber adapter 100.

[0080] In this embodiment, the number of the strip-shaped locking members 120 is three.

[0081] In the solution of this application, in combination with Figure 7 and Figure 9As shown, the adapter body 110 is further provided with a strip-shaped through hole 111b for the strip-shaped locking member 120 to pass through, and the strip-shaped through hole 111b extends along the circumference of the first plug-in channel 111a, that is, the strip-shaped through hole 111b extends along the circumference of the first extending protrusion 111, and the strip-shaped locking member 120 can move relative to the strip-shaped through hole 111b. In this way, the strip-shaped locking member 120 can be exposed from the strip-shaped through hole 111b, which is convenient for controlling the strip-shaped locking member 120 outside the adapter body 110. Optionally, there are multiple strip-shaped locking members 120, and the first extending protrusion 111 is provided with multiple strip-shaped through holes 111b at intervals along its circumference, and the strip-shaped locking members 120 correspond to the strip-shaped through holes 111b one by one.

[0082] In a further embodiment, the optical fiber adapter 100 further includes a movable frame sleeve 130, which can be movably sleeved on the outside of the adapter body 110. Optionally, the movable frame sleeve 130 can slide relative to the adapter body 110. Specifically, the inner wall surface of the movable frame sleeve 130 is slidably matched with the surface of the adapter body 110; or, the movable frame sleeve 130 can rotate relative to the adapter body 110, that is, the movable frame sleeve 130 moves along the circumferential direction of the first plug-in channel 111a relative to the adapter body 110. The inner wall surface of the movable frame sleeve 130 is provided with a limiting structure 131. During the movement of the movable frame sleeve 130 relative to the adapter body 110, the movable frame sleeve 130 controls the strip-shaped locking member 120 through the limiting structure 131.

[0083] Specifically, refer to Figure 1 As shown, when the movable frame sleeve 130 moves to the first position relative to the adapter body 110, the limiting structure 131 cooperates with the strip locking member 120 to limit the movement of the strip locking member 120 relative to the adapter body 110, so that the strip locking member 120 is in a locked state. Specifically, the limiting structure 131 cooperates with the strip locking piece 120 in the radial upper limit position of the first plug-in channel 111a, and the limiting structure 131 prevents the strip locking piece 120 from moving relative to the adapter body 110 in the radial direction of the first plug-in channel 111a. At the same time, the adapter body 110 cooperates with the strip locking piece 120 in the axial upper limit position of the first plug-in channel 111a, that is, the strip locking piece 120 is limited in the axial direction of the first plug-in channel 111a through the strip through hole 111b, so as to prevent the strip locking piece 120 from disengaging from the first strip locking groove 2111, thereby ensuring that the strip locking piece 120 is fixed relative to the adapter body 110.

[0084] refer to Figure 2As shown, when the movable frame 130 moves to the second position relative to the adapter body 110, the limiting structure 131 and the strip locking member 120 are released from the limiting cooperation, and the strip locking member 120 loses the restriction of the limiting structure 131, so that the strip locking member 120 is in an unlocked state. Specifically, when a force is applied to the optical fiber connector 200 to make the first plug-in portion 211 disengage from the first plug-in channel 111a, the first plug-in portion 211 applies a force to the strip locking member 120, and the strip locking member 120 is disengaged from the first strip locking groove 2111 by squeezing the strip locking member 120, and the strip locking member 120 avoids the first plug-in portion 211, so that the first plug-in portion 211 is smoothly disengaged from the first plug-in channel 111a.

[0085] That is to say, the moving position of the movable frame sleeve 130 relative to the adapter body 110 only controls whether the strip locking piece 120 is in a locked state or an unlocked state, but the power for the strip locking piece 120 to disengage from the first strip locking groove 2111 comes from the first plug-in portion 211, that is, the first plug-in portion 211 has a tendency to disengage from the first plug-in channel 111a.

[0086] In this embodiment, the movable frame sleeve 130 is used to control the locking or unlocking of the strip locking member 120. Since the movable frame sleeve 130 is mounted on the outside of the adapter body 110, its operable area is large and convenient for control. There is no need to directly control the smaller strip locking member 120, making the state switching of the strip locking member 120 easier to achieve.

[0087] Of course, in other embodiments, the optical fiber adapter 100 may not be provided with the movable frame sleeve 130, and the user may directly control the strip locking member 120 through the strip through hole 111b, or control the strip locking member 120 through other components to put the strip locking member 120 in a locked state or an unlocked state.

[0088] In a further embodiment, the movable frame 130 and the adapter body 110 are slidably matched along the axial direction of the first plug-in channel 111a. Figure 11 As shown, the limiting structure 131 is provided with a limiting surface 131a, and the limiting structure 131 cooperates with the strip-shaped locking member 120 through the limiting surface 131a. The limiting surface 131a includes a limiting inclined surface 1311, and in the direction in which the movable frame sleeve 130 moves from the first position to the second position, the distance from the limiting inclined surface 1311 to the axis of the first plug-in channel 111a decreases, that is, the distance from the limiting inclined surface 1311 to the axis of the first extending protrusion 111 decreases.

[0089] Optionally, the limiting structure 131 is a strip structure, and the limiting structure 131 extends along the circumferential direction of the movable frame sleeve 130. Along the axial direction of the first insertion channel 111a, the limiting surface 131a includes a connected limiting inclined surface 1311 and a first limiting cylindrical surface 1312. Both the limiting inclined surface 1311 and the first limiting cylindrical surface 1312 can be annular structures. In the direction in which the movable frame sleeve 130 moves from the first position to the second position, the distance from the first limiting cylindrical surface 1312 to the axis of the first insertion channel 111a is constant.

[0090] Refer to Figure 1 As shown, when the movable frame sleeve 130 is in the first position, the first limiting cylindrical surface 1312 is in limiting cooperation with the strip-shaped locking member 120 in the radial direction of the first insertion channel 111a. The first limiting cylindrical surface 1312 directly abuts against the strip-shaped locking member 120 to prevent the strip-shaped locking member 120 from disengaging from the first strip-shaped locking groove 2111. During the process of the movable frame sleeve 130 moving from the second position to the first position, the limiting inclined surface 1311 acts on the strip-shaped locking member 120, and the direction of the applied force is perpendicular to the limiting inclined surface 1311. Since there is a component force of the applied force in the radial direction of the first insertion channel 111a, the limiting inclined surface 1311 can drive the strip-shaped locking member 120 to move radially along the first insertion channel 111a so that the strip-shaped locking member 120 extends into the first strip-shaped locking groove 2111.

[0091] In this embodiment, by providing the limiting inclined surface 1311, the limiting structure 131 is beneficial to driving the strip-shaped locking member 120 to move radially along the first insertion channel 111a, and is more beneficial to the strip-shaped locking member 120 extending into the first strip-shaped locking groove 2111.

[0092] Of course, in other embodiments, the limiting inclined surface 1311 can be replaced by other second limiting cylindrical surfaces. The second limiting cylindrical surface can be perpendicular to the axis of the first insertion channel 111a. During the process of the movable frame sleeve 130 moving from the second position to the first position, the limiting structure 131 acts on the first strip-shaped locking groove 2111 through the second limiting cylindrical surface.

[0093] In an alternative embodiment, the optical fiber adapter 100 may further include an electric driving member or a pneumatic driving member. The electric driving member or the pneumatic driving member is connected to the movable frame sleeve 130 to drive the movable frame sleeve 130 to move relative to the adapter body 110. Among them, the electric driving member may be a linear module, and the pneumatic driving member may be a cylinder or the like.

[0094] In another embodiment, refer to Figures 1 - 2As shown, the optical fiber adapter 100 further includes an elastic member 140. The first end of the elastic member 140 is connected to the adapter body 110, and the second end of the elastic member 140 is connected to the movable frame sleeve 130. The elastic member 140 can drive the movable frame sleeve 130 to switch from the second position to the first position. During the process of the movable frame sleeve 130 switching from the first position to the second position, the elastic member 140 undergoes elastic deformation and stores elastic potential energy; when the external force acting on the movable frame sleeve 130 disappears, the elastic force stored by the elastic member 140 is the main acting force, and the elastic member 140 restores its elastic deformation and drives the movable frame sleeve 130 to switch from the second position to the first position.

[0095] By adopting this embodiment, the elastic force generated by the elastic member 140 is used to drive the automatic reset of the movable frame sleeve 130, saving manpower and improving the switching efficiency. In addition, there is no need to use an electric driving member or a pneumatic driving member, avoiding the situation where the movable frame sleeve 130 cannot be driven to reset due to abnormal situations such as power failure of the electric driving member and air cut-off of the pneumatic driving member.

[0096] Optionally, the elastic member 140 is located between the movable frame sleeve 130 and the first extension protrusion 111. The first end of the elastic member 140 and the first extension protrusion 111 can be connected by welding, bonding or other means, and the second end of the elastic member 140 can be connected to the inner wall surface of the movable frame sleeve 130 by welding, bonding or other means.

[0097] Optionally, the elastic member 140 can be a spring, and the spring is sleeved outside the first extension protrusion 111. Of course, the elastic member 140 can also be other elastic components other than the spring. Further optionally, as Figure 7 and Figure 10 shown, the number of the elastic members 140 is at least two, including a first spring 141 and a second spring 142. The diameter of the second spring 142 is larger than that of the first spring 141, and the elastic deformation amount that the second spring 142 can generate is larger than that of the first spring 141. The first ends of the first spring 141 and the second spring 142 are respectively clamped by different snap rings 161. The snap rings 161 are sleeved outside the first extension protrusion 111. The sizes of the snap ring 161 fixing the first spring 141 and the snap ring 161 fixing the second spring 142 are different. Further, the first ends of the first spring 141 and the second spring 142 are pressed by a compression ring 162 to ensure that the first ends of the first spring 141 and the second spring 142 are fixed relative to the adapter body 110.

[0098] In an alternative embodiment, referring to Figures 5 - 7 and Figures 14 - 16As shown, the optical fiber adapter 100 further includes a pulling member 150, which is connected to the movable frame sleeve 130. Optionally, the pulling member 150 can be fixedly connected to the movable frame sleeve 130 by welding, bonding or other means; the pulling member 150 can pull the movable frame sleeve 130 to move from the first position to the second position. Optionally, the pulling member 150 can be a pulling rope or other pulling members 150 with a certain length. The specific structure of the pulling member 150 is not limited in the embodiments of the present application.

[0099] Adopting this embodiment, using the pulling member 150 to pull the movable frame sleeve 130 is beneficial to accurately control the movement direction of the movable frame sleeve 130, and further accurately control the movement of the movable frame sleeve 130 from the first position to the second position.

[0100] Optionally, the movable frame sleeve 130 is slidably matched with the adapter body 110 along the axial direction of the first insertion channel 111a, and the pulling member 150 extends along the movement direction of the movable frame sleeve 130. In this way, when pulling the pulling member 150, the direction of the force exerted by the pulling member 150 on the movable frame sleeve 130 is parallel to the axial direction of the first insertion channel 111a, which is beneficial to the accurate movement of the movable frame sleeve 130.

[0101] Of course, in other embodiments, the optical fiber adapter 100 may not be provided with the pulling member 150, that is, the user directly applies force to the movable frame sleeve 130.

[0102] In an alternative embodiment, the movable frame sleeve 130 is movably sleeved outside the adapter body 110 along the axial direction of the first insertion channel 111a. One of the movable frame sleeve 130 and the adapter body 110 is provided with a second guiding protrusion 132, and the other is provided with a second guiding groove 111d. The second guiding protrusion 132 extends into the second guiding groove 111d, and the second guiding groove 111d and the second guiding protrusion 132 are in guiding cooperation along the axial direction of the first insertion channel 111a, and the second guiding protrusion 132 can slide along the second guiding groove 111d. Optionally, both the second guiding groove 111d and the second guiding protrusion 132 can extend along the axial direction of the first insertion channel 111a.

[0103] Specifically, referring to Figure 11 and Figure 12 as shown, the inner wall surface of the movable frame sleeve 130 is provided with a second guiding protrusion 132. Optionally, the second guiding protrusion 132 is arranged on the limiting structure 131. Referring to Figure 9 and Figure 13 as shown, the adapter body 110 is provided with a second guiding groove 111d; alternatively, the inner wall surface of the movable frame sleeve 130 is provided with a second guiding groove 111d, and the adapter body 110 is provided with a second guiding protrusion 132.

[0104] Optionally, in a direction perpendicular to the axis of the first insertion channel 111a, the cross-sectional shapes of the second guiding protrusion 132 and the second guiding groove 111d may be an arc structure, a square structure, etc. The embodiments of the present application do not limit the specific shapes of the second guiding protrusion 132 and the second guiding groove 111d.

[0105] By adopting this embodiment, relying on the second guiding protrusion 132 and the second guiding groove 111d, the moving direction of the movable frame sleeve 130 relative to the adapter body 110 is guided to ensure that the movable frame sleeve 130 accurately moves along the axial direction of the first insertion channel 111a.

[0106] Optionally, as shown in Figure 12 the number of the second guiding protrusion 132 and the second guiding groove 111d may be at least two. The second guiding protrusion 132 and the second guiding groove 111d are respectively arranged at intervals along the circumferential direction of the first insertion channel 111a, and the second guiding protrusion 132 and the second guiding groove 111d are in one-to-one guiding cooperation. With such a setting, through multiple groups of corresponding second guiding protrusions 132 and second guiding grooves 111d, different positions of the movable frame sleeve 130 can be respectively guided, which is more conducive to the overall accurate movement of the movable frame sleeve 130 along the axial direction of the first insertion channel 111a.

[0107] Certainly, in other embodiments, the adapter body 110 and the movable frame sleeve 130 may not be provided with the second guiding protrusion 132 and the second guiding groove 111d, and other limiting members may be used to limit the moving direction of the movable frame sleeve 130.

[0108] In an optional embodiment, one of the inner wall surface of the adapter body 110 and the surface of the first insertion portion 211 is provided with a first guiding groove 111c, and the other is provided with a first guiding protrusion 2112. Both the first guiding groove 111c and the first guiding protrusion 2112 extend along the axial direction of the first insertion channel 111a, that is, both the first guiding groove 111c and the first guiding protrusion 2112 are strip-shaped structures. The first guiding groove 111c and the first guiding protrusion 2112 are in guiding cooperation, and the first guiding groove 111c and the first guiding protrusion 2112 are in circumferential limiting cooperation in the first insertion channel 111a.

[0109] Specifically, the inner wall surface of the adapter body 110 is provided with a first guiding groove 111c. Optionally, as shown in Figure 5 the inner wall surface of the first extension protrusion 111 is provided with a first guiding groove 111c, and the first guiding groove 111c extends to the end of the first insertion channel 111a. As shown in Figure 19 the surface of the first insertion portion 211 is provided with a first guiding protrusion 2112; or, the inner wall surface of the adapter body 110 is provided with a first guiding protrusion 2112, and the surface of the first insertion portion 211 is provided with a first guiding groove 111c.

[0110] Optionally, in a direction perpendicular to the axis of the first insertion channel 111a, the cross-sectional shapes of the first guiding groove 111c and the first guiding protrusion 2112 may be an arc structure, a square structure, etc., and the embodiments of the present application do not limit the specific shapes of the first guiding groove 111c and the first guiding protrusion 2112.

[0111] With the adoption of this embodiment, during the process of inserting the first insertion portion 211 into the first insertion channel 111a, the first guiding protrusion 2112 extends into the first guiding groove 111c, and the first guiding protrusion 2112 moves along the extending direction of the first guiding groove 111c to apply guidance to the process of inserting the first insertion portion 211 into the first insertion channel 111a, so as to avoid the first insertion portion 211 rotating relative to the adapter body 110 during the insertion process.

[0112] Certainly, in other embodiments, the adapter body 110 and the first insertion portion 211 may not be provided with the first guiding groove 111c and the first guiding protrusion 2112, and the user can manually control the insertion direction of the optical fiber connector 200 to ensure that the first insertion portion 211 is accurately inserted into the first insertion channel 111a.

[0113] In the solution of the present application, with reference to Figures 5 - 7 and Figures 9 - 10 as shown, the adapter body 110 is provided with a connection head 112 for connecting the pre-terminated connector 21, and the connection head 112 is arranged opposite to the first insertion channel 111a, that is, the connection head 112 is arranged opposite to the first extension protrusion 111. Optionally, the connection head 112 may be provided with an external thread, and the connection head 112 is matched with the threaded hole of the pre-terminated connector 21 through the external thread. Alternatively, the connection head 112 may also be provided with other structures capable of connecting with the pre-terminal connector, and the embodiments of the present application do not limit this. The structure after the optical fiber adapter 100 is respectively connected to the optical fiber connector 200 and the pre-terminated connector 21 is shown in Figure 27 and Figure 28 as shown.

[0114] The adapter is additionally provided with a connection head 112 for connecting the pre-terminated connector 21, which enables the adapter to be connected to both the optical fiber connector 200 and the pre-terminated connector 21 in the embodiments of the present application at the same time, so as to realize the connection of the optical fiber 30 to the pre-terminal position.

[0115] Optionally, with reference to Figure 7 and Figure 14 as shown, the optical fiber adapter 100 further includes a locking nut 170. After the connection head 112 is connected to the pre-terminated connector 21, the locking nut 170 is used to lock it.

[0116] Of course, in other embodiments, the adapter body 110 may not be provided with the connector 112 , or may be provided with other structures that can be used to connect to the pre-terminated body 20 .

[0117] In the scheme of this application, reference is made to Figures 14 - 15 as well as Figures 17 - 18 As shown, the optical fiber connection assembly 10 further includes a first dust cap 300, the first dust cap 300 is provided with a second plug-in portion 310, the second plug-in portion 310 can be inserted into the first plug-in channel 111a, the second plug-in portion 310 is provided with a second strip-shaped locking groove 311, the second strip-shaped locking groove 311 extends along the circumference of the second plug-in portion 310, and the second strip-shaped locking groove 311 is used to cooperate with the strip-shaped locking member 120. Optionally, the second strip-shaped locking groove 311 can be an arc-shaped locking groove or an annular locking groove, and the extension direction of the second strip-shaped locking groove 311 is the same as the extension direction of the strip-shaped locking member 120; the second strip-shaped locking groove 311 can have the same structure as the first strip-shaped locking groove 2111 or different structures.

[0118] When the optical fiber connector 200 is separated from the optical fiber adapter 100 and the second plug-in portion 310 is inserted into the first plug-in channel 111a, the strip locking member 120 is in a locked state, and at least part of the strip locking member 120 extends into the second strip locking groove 311. Optionally, a part of the strip locking member 120 may extend into the second strip locking groove 311, or the entire strip locking member 120 may extend into the second strip locking groove 311, thereby connecting the optical fiber adapter 100 and the first dust cap 300. That is, the second strip locking groove 311 replaces the first strip locking groove 2111 to cooperate with the strip locking member 120 for locking, and the connection principle of the first dust cap 300 and the optical fiber adapter 100 and the connection principle of the optical fiber adapter 100 and the optical fiber connector 200 are the same.

[0119] Similarly, when the strip locking piece 120 is in an unlocked state, that is, when the strip locking piece 120 avoids the second plug-in portion 310, the strip locking piece 120 can be disengaged from the second strip locking groove 311. At this time, the second plug-in portion 310 loses the restricting effect of the strip locking piece 120, and the second plug-in portion 310 is disengaged from the first plug-in channel 111a.

[0120] In this embodiment, the optical fiber adapter 100 is sealed by the first dust cap 300, so that the optical fiber adapter 100 has certain waterproof and dustproof capabilities, thereby preventing external dust from entering when the optical fiber adapter 100 is not in use.

[0121] Alternatively, if Figures 16 - 17As shown, a first sealing ring 320 is further provided on the second insertion part 310 of the first dust cap 300. The first sealing ring 320 is sleeved outside the second insertion part 310, and the gap between the second insertion part 310 and the adapter body 110 is sealed by the first sealing ring 320.

[0122] Of course, in other embodiments, the optical fiber connection assembly 10 may not be provided with the first dust cap 300. When the optical fiber connector 200 is separated from the optical fiber adapter 100, the first insertion channel 111a of the optical fiber adapter 100 is in an exposed state.

[0123] In an alternative embodiment, referring to Figure 3 、 Figure 4 and Figure 7 As shown, the optical fiber connection assembly 10 further includes a first flexible connecting member 510. The first dust cap 300 is connected to the optical fiber adapter 100 through the first flexible connecting member 510. Among them, the first flexible connecting member 510 can be structures such as a connecting rope or a connecting belt, as long as it can connect the first dust cap 300 and the optical fiber adapter 100. Optionally, the end of the first flexible connection can be connected to the locking nut 170 of the optical fiber adapter 100.

[0124] Adopting this embodiment, when the first dust cap 300 and the optical fiber adapter 100 are not inserted and mated, the two are connected through the first flexible connecting member 510 to prevent the first dust cap 300 from being lost.

[0125] Of course, in other embodiments, the optical fiber connection assembly 10 may not be provided with the first flexible connecting member 510, and the first dust cap 300 is directly inserted and mated with the optical fiber adapter 100, or the two are completely separated.

[0126] In the solution of the present application, referring to Figure 25 As shown, the optical fiber connection assembly 10 further includes a second dust cap 400. The second dust cap 400 is provided with a second insertion channel 410a for the optical fiber connector 200 to insert. One of the second dust cap 400 and the optical fiber connector 200 is provided with a locking protrusion 221, and the other is provided with a locking groove 411. The second dust cap 400 is provided with a second extending protrusion 410 extending along its own axis. The second extending protrusion 410 is a ring structure, and the second extending protrusion 410 forms the second insertion channel 410a.

[0127] Specifically, it may be that the second dust cap 400 is provided with a locking groove 411 and the optical fiber connector 200 is provided with a locking protrusion 221; or it may be that the second dust cap 400 is provided with a locking protrusion 221 and the optical fiber connector 200 is provided with a locking groove 411. Optionally, the second insertion channel 410a is for the connector body 210 and the outer frame 220 of the optical fiber connector 200 to insert. Referring to Figure 19 、Figure 20 and Figure 23 As shown, a locking protrusion 221 is provided on the outer surface of the outer housing 220.

[0128] When the optical fiber connector 200 is separated from the optical fiber adapter 100 and the optical fiber connector 200 is inserted into the second insertion channel 410a, at least a part of the locking protrusion 221 extends into the locking groove 411. It can be that a part of the locking protrusion 221 extends into the locking groove 411, or the whole locking protrusion 221 extends into the locking groove 411, so as to connect the second dust cap 400 and the optical fiber connector 200.

[0129] By adopting this embodiment, the optical fiber connector 200 is sealed by the second dust cap 400, so that it has certain waterproof and dustproof capabilities, and prevents external dust from entering when the optical fiber connector 200 is not in use.

[0130] Optionally, the locking groove 411 is arranged at the end of the second insertion channel 410a. Refer to Figure 25 As shown, the locking groove 411 includes a first guiding groove 411a, a second guiding groove 411b and a locking groove 411c that are sequentially communicated. Among them, the first guiding groove 411a and the second guiding groove 411b are sequentially arranged in the axial direction of the second insertion channel 410a, and the second guiding groove 411b and the locking groove 411c are sequentially arranged in the circumferential direction of the second insertion channel 410a. Along the direction in which the optical fiber connector 200 is inserted into the second insertion channel 410a, the width of the first guiding groove 411a decreases, and the width of the second guiding groove 411b increases; at the same time, along the direction from the second guiding groove 411b to the locking groove 411c, the dimension of the second guiding groove 411b in the axial direction of the second insertion channel 410a decreases.

[0131] In this way, the opening of the first guiding groove 411a is larger, which is convenient for the locking protrusion 221 to extend into the first guiding groove 411a and extend into the second guiding groove 411b under the guiding action of the first guiding groove 411a; after the locking protrusion 221 extends into the second guiding groove 411b, it can extend into the locking groove 411c under the guiding action of the second guiding groove 411b, so that the locking protrusion 221 and the locking groove 411c are in locking cooperation. Therefore, when connecting the second dust cap 400 and the optical fiber connector 200, the optical fiber connector 200 is first inserted into the second insertion channel 410a along the axial direction of the second insertion channel 410a, and then rotated relative to the second dust cap 400 by a certain angle along the circumferential direction of the second insertion channel 410a to achieve the accurate cooperation between the locking protrusion 221 and the locking groove 411c.

[0132] Of course, in other embodiments, the optical fiber connection assembly 10 may not be provided with the second dust cap 400. When the optical fiber connector 200 is separated from the optical fiber adapter 100, the optical fiber connector 200 is in an exposed state.

[0133] In this embodiment, the locking groove 411 is provided on the second dust cap 400. Refer to Figure 25 As shown, a positioning mark 412 is provided on the outer part of the second dust cap 400. In the radial direction of the second insertion channel 410a, the positioning mark 412 is opposite to the locking groove 411. In this way, when the optical fiber connector 200 is inserted into the second dust cap 400, in the circumferential direction of the second insertion channel 410a, the positioning mark 412 is opposite to the locking protrusion 221, which is beneficial to the accurate insertion of the locking protrusion 221 into the guiding groove during the insertion process.

[0134] In an alternative embodiment, the number of both the locking protrusion 221 and the locking groove 411 is one.

[0135] In another embodiment, the number of both the locking protrusion 221 and the locking groove 411 is multiple. The locking protrusions 221 and the locking grooves 411 are both arranged at intervals along the circumferential direction of the second insertion channel 410a, and the locking protrusions 221 and the locking grooves 411 correspond to each other one by one. Optionally, refer to Figure 23 As shown, two locking protrusions 221 are provided on the opposite outer surfaces of the outer frame 220; as Figure 25 shown, two locking grooves 411 are provided oppositely on the inner wall surface of the second dust cap 400.

[0136] With this embodiment, the number of the locking protrusion 221 and the locking groove 411 increases, and the locking and mating area between the second dust cap 400 and the optical fiber connector 200 increases, which is beneficial to further improving the connection stability between the second dust cap 400 and the optical fiber connector 200.

[0137] In an alternative embodiment, refer to Figure 3 、 Figure 4 and Figure 22 As shown, the optical fiber connection assembly 10 further includes a second flexible connector 520. The second dust cap 400 is connected to the optical fiber connector 200 through the second flexible connector 520. Among them, the second flexible connector 520 can be structures such as a connecting rope or a connecting belt, as long as it can connect the second dust cap 400 and the optical fiber connector 200. Optionally, the end of the second flexible connector 520 can be connected to the outer frame 220.

[0138] With this embodiment, when the second dust cap 400 and the optical fiber connector 200 are not inserted and mated, the two are connected through the second flexible connector 520, preventing the loss of the second dust cap 400.

[0139] Of course, in other embodiments, the optical fiber connection assembly 10 may not be provided with the second flexible connecting member 520, and the second dust cap 400 is directly inserted and matched with the optical fiber connector 200, or the two are completely separated.

[0140] In a further embodiment, referring to Figure 3 , Figure 4 and Figure 26 as shown, the optical fiber connection assembly 10 further includes the first dust cap 300 and the second dust cap 400 described above. Moreover, when the optical fiber connector 200 is connected to the optical fiber adapter 100, the first dust cap 300 can be inserted into the second insertion channel 410a to connect the first dust cap 300 and the second dust cap 400.

[0141] Optionally, the second dust cap 400 may be provided with a structure that cooperates with the second strip-shaped locking groove 311 of the first dust cap 300, and the first dust cap 300 may also be provided with a structure that cooperates with the locking groove 411 of the second dust cap 400. In this way, the existing structures of the first dust cap 300 or the second dust cap 400 are used for cooperation; or, the first dust cap 300 and the second dust cap 400 are respectively provided with separate connection structures for connection. Further optionally, one of the first dust cap 300 and the second dust cap 400 is provided with a card slot, and the other is provided with a snap projection. When the first dust cap 300 is inserted into the second insertion channel 410a, the snap projection is snap-fitted with the card slot. In this embodiment, the first dust cap 300 and the second dust cap 400 are directly interference-fitted to achieve the connection between the two.

[0142] With this embodiment, when both the first dust cap 300 and the second dust cap 400 are not in use, the two are connected so that they are gathered together to avoid being scattered to different positions and causing the loss of the dust caps.

[0143] Of course, in other embodiments, the first dust cap 300 and the second dust cap 400 may not be inserted and matched. When the optical fiber connector 200 is connected to the optical fiber adapter 100, the first dust cap 300 is only connected to the optical fiber adapter 100 through the first flexible connecting member 510, and the second dust cap 400 is only connected to the optical fiber connector 200 through the second flexible connecting member 520.

[0144] Based on the optical fiber connection assembly 10 disclosed in the present application, an embodiment of the present application also discloses a pre-terminated system. Referring to Figures 27 - 30 as shown, the pre-terminated system includes a pre-terminated body 20 and the optical fiber connection assembly 10 in the above embodiment. Optionally, the pre-terminated body 20 may be a fiber distribution box or other structures. A pre-terminated connector 21 is provided in the pre-terminated body 20, and the pre-terminated connector 21 can be connected to one end of the optical fiber adapter 100 facing away from the optical fiber connector 200. Optionally, referring toFigure 29 and Figure 30 It can be seen that the pre-terminated body 20 is provided with a plurality of pre-terminated connectors 21, so that a plurality of optical fiber connection components 10 are connected to the pre-terminated body 20.

[0145] In this embodiment, the pre-terminated system uses specially designed optical fiber adapters 100 and optical fiber connectors 200 to improve the connection stability between the optical fiber adapter 100 and the optical fiber connector 200. Further, when the optical fiber connection component 10 is connected to the pre-terminated body 20, the connection stability between the optical fiber 30 and the pre-terminated body 20 is also improved.

[0146] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the claims of the present application, and all of them fall within the protection scope of the present application.

Claims

1. An optical fiber connection assembly, characterized in that: include: An optical fiber connector (200), wherein the optical fiber connector (200) is provided with a first plug-in portion (211), and the first plug-in portion (211) is provided with a first strip-shaped locking groove (2111); An optical fiber adapter (100), the optical fiber adapter (100) comprising an adapter body (110) and a strip-shaped locking member (120), the adapter body (110) being provided with a first plug-in channel (111a) for inserting the first plug-in portion (211), the strip-shaped locking member (120) and the first strip-shaped locking groove (2111) both extending along the circumference of the first plug-in channel (111a), the strip-shaped locking member (120) having a locked state and an unlocked state; When the first plug-in portion (211) is inserted into the first plug-in channel (111a) and the strip-shaped locking member (120) is in the locked state, at least a portion of the strip-shaped locking member (120) extends into the first strip-shaped locking groove (2111) to connect the optical fiber connector (200) and the optical fiber adapter (100); When the strip-shaped locking piece (120) is in the unlocked state, the strip-shaped locking piece (120) can be disengaged from the first strip-shaped locking groove (2111), so that the first plug-in portion (211) can be disengaged from the first plug-in channel (111a) or inserted into the first plug-in channel (111a).

2. The optical fiber connection assembly according to claim 1, characterized in that: At least one of the groove wall surface of the first strip-shaped locking groove (2111) and the surface of the strip-shaped locking member (120) includes a strip-shaped arc surface, and the strip-shaped locking member (120) extends into the first strip-shaped locking groove (2111) under the guidance of the strip-shaped arc surface.

3. The optical fiber connection assembly according to claim 1, characterized in that: There are a plurality of strip-shaped locking members (120), and the strip-shaped locking members (120) are spaced apart in the circumferential direction of the first plug-in channel (111a), and each of the strip-shaped locking members (120) can extend into the first strip-shaped locking groove (2111).

4. The optical fiber connection assembly according to claim 1, characterized in that: The adapter body (110) is further provided with a strip-shaped through hole (111b) for the strip-shaped locking member (120) to pass through, and the strip-shaped through hole (111b) extends along the circumference of the first plug-in channel (111a). The optical fiber adapter (100) further comprises a movable frame sleeve (130), and the movable frame sleeve (130) can be movably sleeved on the outside of the adapter body (110), and the inner wall surface of the movable frame sleeve (130) is provided with a limiting structure (131). When the movable frame sleeve (130) moves to the first position relative to the adapter body (110), the limiting structure (131) and the strip-shaped locking member (120) are in limiting cooperation, and the strip-shaped locking member (120) is in the locking state; When the movable frame sleeve (130) moves to the second position relative to the adapter body (110), the limiting structure (131) and the strip-shaped locking member (120) are released from the limiting cooperation, and the strip-shaped locking member (120) is in the unlocked state.

5. The optical fiber connection assembly according to claim 4, characterized in that: The movable frame sleeve (130) and the adapter body (110) are slidably matched along the axial direction of the first plug-in channel (111a); the limiting structure (131) is provided with a limiting surface (131a); the limiting structure (131) is limitedly matched with the strip-shaped locking member (120) through the limiting surface (131a); the limiting surface (131a) includes a limiting inclined surface (1311); In the direction in which the movable frame sleeve (130) moves from the first position to the second position, the distance from the limiting inclined surface (1311) to the axis of the first plugging channel (111a) decreases.

6. The optical fiber connection assembly according to claim 4, characterized in that: The optical fiber adapter (100) further comprises an elastic member (140), wherein a first end of the elastic member (140) is connected to the adapter body (110), and a second end of the elastic member (140) is connected to the movable frame sleeve (130), and the elastic member (140) can drive the movable frame sleeve (130) to switch from the second position to the first position.

7. The optical fiber connection assembly according to claim 4, characterized in that: The optical fiber adapter (100) further comprises a pulling member (150), wherein the pulling member (150) is connected to the movable frame sleeve (130), and the pulling member (150) can pull the movable frame sleeve (130) to move from the first position to the second position.

8. The optical fiber connection assembly according to claim 4, characterized in that: The movable frame sleeve (130) is movably sleeved on the outside of the adapter body (110) along the axial direction of the first plug-in channel (111a); one of the movable frame sleeve (130) and the adapter body (110) is provided with a second guide protrusion (132), and the other is provided with a second guide groove (111d); the second guide groove (111d) and the second guide protrusion (132) are matched along the axial guidance of the first plug-in channel (111a).

9. The optical fiber connection assembly according to claim 1, characterized in that: One of the inner wall surface of the adapter body (110) and the surface of the first plug-in portion (211) is provided with a first guide groove (111c), and the other is provided with a first guide protrusion (2112). Both the first guide groove (111c) and the first guide protrusion (2112) extend along the axial direction of the first plug-in channel (111a). The first guide groove (111c) and the first guide protrusion (2112) are guided and matched.

10. The optical fiber connection assembly according to claim 1, characterized in that: The adapter body (110) is provided with a connector (112) for connecting to a pre-terminated connector (21), and the connector (112) is arranged opposite to the first plug-in channel (111a).

11. The optical fiber connection assembly according to claim 1, characterized in that: The optical fiber connection assembly (10) further comprises a first dust cap (300), wherein the first dust cap (300) is provided with a second plug-in portion (310), wherein the second plug-in portion (310) is provided with a second strip-shaped locking groove (311), and the second strip-shaped locking groove (311) extends along the circumference of the second plug-in portion (310). When the optical fiber connector (200) is separated from the optical fiber adapter (100) and the second plug-in portion (310) is inserted into the first plug-in channel (111a), the strip-shaped locking member (120) extends into the second strip-shaped locking groove (311) to connect the optical fiber adapter (100) and the first dust cap (300); And / or, the optical fiber connection assembly (10) further comprises a second dust cap (400), the second dust cap (400) being provided with a second insertion channel (410a) for inserting the optical fiber connector (200), one of the second dust cap (400) and the optical fiber connector (200) being provided with a locking protrusion (221), and the other being provided with a locking groove (411), When the optical fiber connector (200) is separated from the optical fiber adapter (100) and the optical fiber connector (200) is inserted into the second insertion channel (410a), at least a portion of the locking protrusion (221) extends into the locking groove (411) to connect the second dust cap (400) to the optical fiber connector (200).

12. The optical fiber connection assembly according to claim 11, characterized in that: When the optical fiber connector (200) is connected to the optical fiber adapter (100), the first dust cap (300) can be inserted into the second plug-in channel (410a) to connect the first dust cap (300) and the second dust cap (400).

13. The optical fiber connection assembly according to claim 11, characterized in that: The optical fiber connection assembly (10) further comprises a first flexible connection member (510), and the first dust cap (300) is connected to the optical fiber adapter (100) via the first flexible connection member (510); And / or, the optical fiber connection assembly (10) further includes a second flexible connection member (520), and the second dust cap (400) is connected to the optical fiber connector (200) via the second flexible connection member (520).

14. A pre-termination system, characterized in that: It comprises a pre-termination body (20) and the optical fiber connection assembly (10) according to any one of claims 1 to 13, wherein the pre-termination body (20) is connected to the optical fiber adapter (100) of the optical fiber connection assembly (10).

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