A fiber optic connector

Abstract

The present invention relates to the field of connector technology, and in particular to an optical fiber connector, comprising a ferrule assembly and a connector housing, wherein the connector housing is provided with an axially extending inner cavity, the inner side wall of the inner cavity is provided with a limiting protrusion, the tail of the ferrule assembly is provided with a limiting hook, the ferrule assembly is inserted into the inner cavity and engaged with the limiting protrusion by the limiting hook to limit the ferrule assembly from moving toward the front end of the inner cavity, and the connector housing is provided with an axially extending window at a position corresponding to the limiting protrusion. On the one hand, the present invention realizes axial limitation of the ferrule assembly by engaging the limiting hook with the limiting protrusion to prevent the ferrule assembly from moving out of the front end of the connector; on the other hand, an axially extending window is provided at a position corresponding to the limiting protrusion on one side of the connector housing, and when the ferrule assembly is disassembled, the ferrule assembly is separated from the connector housing by moving the limiting hook at the tail of the ferrule assembly toward the window, thereby avoiding damage to parts during the disassembly of the ferrule assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to an optical fiber connector. Background Art

[0002] With the rapid development of fiber-optic communication technology, PON access technology has become the primary solution for the widespread rollout of FTTH (Fiber to the Home) worldwide. Fiber optic quick connector assemblies, with their ease, speed, and efficiency, have become the optimal solution for FTTH access. Common types of fiber optic quick connector assemblies include straight-through and pre-buried types.

[0003] The embedded optical fiber quick connector assembly in the prior art is quick and easy to assemble because the core assembly is generally inserted into the inner cavity of the connector housing through a hook and engaged with the connector housing. However, when a problem occurs in the assembly and disassembly is required, the core assembly is restricted in its movement toward the front end of the connector housing by the hook structure, and the core assembly cannot be moved out toward the rear end of the connector housing. Therefore, during disassembly, the core assembly is generally pulled out by force with external force, causing the hook of the core assembly to be deformed and damaged, making it impossible to use it a second time or reassemble it, which has a great impact on the reliability of the connector connecting the optical fiber. Summary of the Invention

[0004] The object of the present invention is to provide an optical fiber connector that enables a ferrule assembly to move toward the front end of a connector housing after assembly with the connector housing, and helps to avoid damage to components during disassembly of the ferrule assembly and the connector housing.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an optical fiber connector, including a core assembly and a connector shell, the connector shell is provided with an axially extending inner cavity, the inner side wall of the inner cavity is provided with a limiting protrusion, the tail of the core assembly is provided with a limiting hook, the core assembly is inserted into the inner cavity and is engaged with the limiting protrusion through the limiting hook to limit the movement of the core assembly toward the front end of the inner cavity, the connector shell is provided with an axially extending window at the position corresponding to the limiting protrusion, and the tail of the core assembly can move toward the direction of the window.

[0006] Optionally, a cover plate is further included, which includes a cover body covering the window and a cantilever hook connected to the cover body. A slot is provided on at least one side of the window, and the cantilever hook is engaged with the slot.

[0007] Optionally, a mounting hole is provided on a side of the connector housing where the window is provided, and the card slot is provided on an inner side wall of the mounting hole.

[0008] Optionally, a through hole is formed on one side of the card slot and communicates with a side surface of the connector housing.

[0009] Optionally, there are two cantilever hooks, and the slots are respectively provided on both sides of the window for engaging with the cantilever hooks.

[0010] Optionally, the cover body is provided with a first side surface facing the window, and the first side surface is provided with a protrusion facing away from the first side surface for abutting against the ferrule assembly.

[0011] Optionally, the ferrule assembly is provided with a first limiting surface facing the rear end of the ferrule assembly, the limiting protrusion is provided with a second limiting surface facing the front end of the connector shell, and a spring is provided on the outside of the ferrule assembly, with both ends of the spring respectively abutting the first limiting surface and the second limiting surface.

[0012] Optionally, a positioning protrusion is provided on the inner side wall of the inner cavity, and the positioning protrusion is provided with a third limiting surface facing the front end of the connector shell, and the core assembly is provided with a fourth limiting surface facing the tail end of the core assembly. A spring is provided on the outer side of the core assembly, and both ends of the spring respectively abut the third limiting surface and the fourth limiting surface.

[0013] Optionally, it also includes a tail sleeve that is sleeved on the outside of the connector shell, a limiting groove is opened on one side of the tail sleeve, the limiting groove is provided with a first side wall facing the tail end of the tail sleeve, the connector shell is provided with a movable spring plate, the movable spring plate is provided with a third side wall facing the front end of the connector shell, the movable spring plate is provided with an end of the third side wall embedded in the limiting groove, and the third side wall is abutted against the first side wall.

[0014] Optionally, an axially extending clamping groove is provided at the rear of the connector housing, and a plurality of first protrusions and a second protrusion are respectively provided on the opposite side walls, and the plurality of first protrusions and the second protrusions are staggered along the axial direction of the connector housing.

[0015] The implementation of the embodiments of the present invention has the following technical effects:

[0016] On the one hand, the present invention provides a limiting protrusion on the inner wall of the inner cavity of the connector shell, and forms a limiting hook at the tail of the ferrule assembly. When the ferrule assembly is inserted into the inner cavity, the ferrule assembly is axially limited by the engagement of the limiting hook with the limiting protrusion, thereby preventing the ferrule assembly from moving out of the front end of the connector. On the other hand, in order to facilitate the removal of the ferrule assembly from the connector shell when assembly problems occur or maintenance is required, an axially extending window is provided on one side of the connector shell at a position corresponding to the limiting protrusion. When the ferrule assembly is disassembled, the limiting hook at the tail of the ferrule assembly is moved toward the window. When the limiting hook leaves the limiting protrusion, the ferrule assembly can be pulled out of the inner cavity, thereby realizing the separation of the ferrule assembly from the connector shell, avoiding damage to parts during the disassembly of the ferrule assembly, and ensuring the performance of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded view of a preferred embodiment of the present invention;

[0018] Figure 2 is a cross-sectional view of a preferred embodiment of the present invention;

[0019] Figure 3 yes Figure 2 A magnified schematic diagram of point A in the middle;

[0020] Figure 4 yes Figure 2 A magnified schematic diagram of point B in the middle;

[0021] Figure 5 This is a structural diagram of the ferrule assembly in a preferred embodiment of the present invention;

[0022] Figure 6 is an exploded view of the ferrule assembly in a preferred embodiment of the present invention;

[0023] Figure 7 is a front view of the assembly of the connector housing and the cover plate in a preferred embodiment of the present invention;

[0024] Figure 8 yes Figure 7 Cross-sectional view at C-C in the middle;

[0025] Figure 9 is a front view of a connector housing in a preferred embodiment of the present invention;

[0026] Figure 10 is a cross-sectional view of a connector housing in a preferred embodiment of the present invention;

[0027] Figure 11 This is a schematic structural diagram of a cover plate in a preferred embodiment of the present invention;

[0028] Figure 12 This is a structural diagram of the ferrule assembly in a disassembled state in a preferred embodiment of the present invention;

[0029] Figure 13 is a cross-sectional view of another embodiment of the present invention;

[0030] Figure 14 is a cross-sectional view of an assembly of a connector and a cover plate in another embodiment of the present invention;

[0031] Figure 15 yes Figure 13 A partial enlarged schematic diagram of point C in the middle;

[0032] Figure 16 2 is a schematic structural diagram of a cover plate in another embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Ferrule assembly, 11. Limiting hook, 12. First limiting surface, 13. Fourth limiting surface, 14. Lock, 15. Ceramic ferrule, 16. Tailstock, 17. Pressing block, 18. Groove, 2. Connector housing, 21. Inner cavity, 211. Ejection hole, 22. Limiting protrusion, 221. Second limiting surface, 23. Window, 24. Mounting hole, 241. Slot, 25. Through hole, 26 , positioning protrusion, 261, third limiting surface, 27, movable spring piece, 271, third side wall, 28, positioning end surface, 29, clamping groove, 291, first protrusion, 292, second protrusion, 3, cover plate, 31, cover body, 311, protrusion, 312, first side surface, 32, cantilever hook, 4, spring, 5, tail sleeve, 51, limiting groove, 511, first side wall, 52, movable pressing piece. DETAILED DESCRIPTION

[0035] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] Furthermore, the present invention uses terms such as "first" and "second" to describe various types of information, but such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, "first" information could also be referred to as "second" information, and similarly, "second" information could also be referred to as "first" information without departing from the scope of the present invention.

[0038] refer to Figure 1 - Figure 11One embodiment of the present invention provides a fiber optic connector, comprising a ferrule assembly 1 and a connector housing 2. The connector housing 2 defines an axially extending inner cavity 21, the inner sidewall of which is provided with a limiting protrusion 22. A limiting hook 11 is provided at the rear end of the ferrule assembly 1. The ferrule assembly 1 is inserted into the inner cavity 21 and engages with the limiting protrusion 22 via the limiting hook 11 to restrict movement of the ferrule assembly 1 toward the front end of the inner cavity 21. The connector housing 2 defines an axially extending window 23 at a position corresponding to the limiting protrusion 22, allowing the rear end of the ferrule assembly 1 to move toward the window 23. Specifically, the limiting protrusion 22 in this embodiment is provided in the middle section of the connector housing 2.

[0039] On the one hand, the present invention provides a limiting protrusion 22 on the inner wall of the inner cavity 21 of the connector shell 2, and forms a limiting hook 11 at the tail of the ferrule assembly 1. When the ferrule assembly 1 is inserted into the inner cavity 21, the limiting hook 11 engages with the limiting protrusion 22 to achieve axial limitation of the ferrule assembly 1, preventing the ferrule assembly 1 from moving out of the front end of the connector; on the other hand, in order to facilitate the removal of the ferrule assembly 1 from the connector shell 2 when assembly problems occur or maintenance is required, an axially extending window 23 is provided on one side of the connector shell 2 at a position corresponding to the limiting protrusion 22. When the ferrule assembly 1 is disassembled, the limiting hook 11 at the tail of the ferrule assembly 1 is moved toward the window 23. When the limiting hook 11 leaves the limiting protrusion 22, the ferrule assembly 1 can be pulled out of the inner cavity 21, thereby realizing the separation of the ferrule assembly 1 from the connector shell 2, avoiding damage to parts during the disassembly of the ferrule assembly 1, and ensuring the performance of the connector.

[0040] Among them, since the components of the ferrule assembly include a ceramic ferrule 15, a pre-buried optical fiber, a tail seat 16, a pressing block 17 and a lock 14, wherein the tail seat 16 of the ferrule assembly 1 in this embodiment is made of metal material, which can reduce the possibility of deformation of the ferrule assembly 1 during assembly and disassembly, and improve the stability of use; in the ferrule assembly 1, the pre-buried optical fiber is arranged in the inner hole of the ceramic ferrule 15, and one end is exposed at the plug-in end of the ceramic ferrule 15, and the other end is exposed at the groove portion 18 of the ceramic ferrule 15; the ceramic ferrule 15 is sleeved in the tail seat 16, and the plug-in end of the ceramic ferrule 15 is exposed at the front end opening of the tail seat 16; the pressing block 17 cooperates with the groove portion 18 of the ceramic ferrule 15; the spring 4 is sleeved on the outer surface of the tail of the tail seat 16; the lock 14 is movably sleeved on the outer surface of the tail seat 16, so that when the ferrule assembly 1 is inserted into the inner cavity 21 and with When the external optical fiber is connected, the external optical fiber penetrates into the inner cavity 21 from the rear end of the connector shell 2 and reaches the groove portion 18 of the core assembly 1, realizing the docking of the embedded optical fiber and the external optical fiber, and then pushes the lock buckle 14 toward the front end of the connector shell 2, so that the fit between the pressing block 17 and the groove portion 18 changes from a loose fit to a tight fit, thereby locking the optical fiber docking point. In order to facilitate the pushing of the lock buckle 14 when the core assembly 1 is inserted into the inner cavity 21, specifically, the window 23 in this embodiment includes a first window 231 and a second window 232. The position of the first window 231 corresponds to the area where the lock buckle 14 moves, and the position of the second window 232 corresponds to the position setting of the limiting protrusion 22, so that the limiting hook 11 of the core assembly 1 can be moved out of the second window 232 and disengaged from the limiting protrusion 22, thereby realizing the disassembly of the core assembly 1 and the connector shell 2.

[0041] Furthermore, the first window 231 and the second window 232 penetrate through the axial direction of the connector housing to form a window 23, so that when the ferrule assembly 1 deviates at the rear end, there is enough space to allow the limiting hook to disengage from the limiting protrusion.

[0042] refer to Figure 1 、 Figure 2 、 Figure 6 - Figure 10 Furthermore, in order to prevent the ferrule assembly 1 from being accidentally subjected to force and moving through the window 23 during use, which may cause the ferrule assembly 1 to separate from the connector housing 2, the connector in this embodiment also includes a cover plate 3, which includes a cover body 31 covering the window 23 and a cantilever hook 32 connected to the cover body 31, and a slot 241 is provided on at least one side of the window 23, and the cantilever hook 32 is engaged with the slot 241. In this way, the window 23 is covered by the cover body 31, thereby preventing the tail of the ferrule assembly 1 from accidentally moving out of the window 23, thereby improving the reliability and stability of the connector. When the ferrule assembly 1 needs to be disassembled, it is only necessary to separate the cantilever hook 32 from the slot 241; specifically, in this embodiment, the cover plate 3 is covered on the second window 232 to avoid obstructing the movement of the lock 14.

[0043] refer to Figure 7 Specifically, a mounting hole 24 is provided on one side of the connector housing 2 where the window 23 is provided, and a card slot 241 is provided on the inner wall of the mounting hole 24. In this way, when the cantilever hook 32 is engaged with the card slot 241, the cantilever hook 32 is arranged in the mounting hole 24, thereby preventing the cantilever hook 32 from being accidentally separated from the card slot 241 by force and causing the cover plate 3 to fall off, thereby further improving the reliability of the connection between the cover plate 3 and the connector housing 2.

[0044] At the same time, in order to facilitate the removal of the cover 3 from the connector housing 2, a through hole 25 is provided on one side of the slot 241 of this embodiment to communicate with one side of the connector housing 2, and there are two cantilever hooks 32. Slots 241 are provided on both sides of the window 23 for engaging with the cantilever hooks 32. Specifically, the cantilever hooks 32 in this embodiment are arranged facing each other. In this way, the slots 241 set in the two mounting holes 24 are set back to each other. Therefore, the through hole 25 in this embodiment is connected to the side of the connector housing 2 facing away from the window 23, so that the user can insert a tool into the through hole 25 and push the cantilever hook 32 out of the mounting hole 24 to remove the cover 3.

[0045] refer to Figure 13 In another embodiment, the cantilever hooks 32 are arranged back to back. In this way, the slots 241 provided in the two mounting holes 24 are arranged facing each other. At this time, the through hole 25 opened on one side of the slot 241 is connected to the side of the adjacent window 23 of the connector housing 2, so that the user can push the cantilever hook 32 out of the slot 241 through the through hole 25 to separate the cover 3 from the connector housing 2.

[0046] refer to Figure 10 Furthermore, the cover body 31 in this embodiment is provided with a first side surface facing the window 23, and the first side surface is provided with a protrusion 311 protruding in a direction facing away from the first side surface for abutting against the ferrule assembly 1. In this way, when the cantilever hook 32 is engaged with the slot 241, the cover body 31 can apply pressure to one side of the ferrule assembly 1 through the protrusion 311, thereby locking the ferrule assembly 1 and improving the stability of the installation of the ferrule assembly 1.

[0047] Among them, in order to prevent the ferrule assembly 1 from moving toward the rear end of the connector housing 2, the ferrule assembly 1 of this embodiment is provided with a first limiting surface 12 facing the rear end of the ferrule assembly 1, and the limiting protrusion 22 is provided with a second limiting surface 221 facing the front end of the connector housing 2. A spring 4 is provided on the outside of the ferrule assembly 1, and the two ends of the spring 4 respectively abut against the first limiting surface 12 and the second limiting surface 221. Figure 2 and Figure 4In this way, the spring 4 provides elastic force to move the ferrule assembly 1 toward the rear end of the connector housing 2 and automatically reset it. When the ferrule assembly 1 is hit, the spring 4 can provide a buffer to avoid damage to the ferrule assembly 1, making it more reliable to use. Specifically, the first limiting surface 12 in this embodiment is set in the rear section area of ​​the ferrule assembly 1.

[0048] Furthermore, the connector housing has a retreat area for the axial movement of the plug assembly within a preset range. On the one hand, it can cooperate with the setting of the spring to provide cushioning when the plug assembly is hit. On the other hand, when the limit hook of the plug assembly needs to be disengaged from the limit protrusion, the plug assembly is pressed toward the rear end so that the limit hook and the limit protrusion have a certain distance in the axial direction, and then the tail end of the plug assembly is moved toward the window, thereby reducing the resistance to the separation of the limit hook of the plug assembly from the limit protrusion.

[0049] refer to Figure 12 and Figure 14 In another embodiment, a positioning protrusion 26 is provided on the inner wall of the inner cavity 21. The positioning protrusion 26 has a third limiting surface 261 facing the front end of the connector housing 2. The ferrule assembly 1 has a fourth limiting surface 13 facing the rear end of the ferrule assembly 1. A spring 4 is sleeved on the outer side of the ferrule assembly 1, with its ends abutting the third limiting surface 261 and the fourth limiting surface 13, respectively. This achieves axial positioning of the ferrule assembly 1 and provides a buffer through the spring 4, preventing damage to the ferrule assembly 1 and improving the reliability of the connector. Specifically, the fourth limiting surface 13 in this embodiment is located in the front region of the ferrule assembly 1.

[0050] refer to Figure 2 and Figure 3 In order to facilitate the assembly of the connector, the present embodiment further includes a tail sleeve 5 sleeved on the outside of the connector housing 2, a limiting groove 51 is provided on one side of the tail sleeve 5, the limiting groove 51 has a first side wall 511 facing the tail end of the tail sleeve 5, the connector housing 2 is provided with a movable spring 27, the movable spring 27 has a third side wall 271 facing the front end of the connector housing 2, the movable spring 27 has one end of the third side wall 271 embedded in the limiting groove 51, and the third side wall 271 abuts against the first side wall 511, and the connector housing 2 has a third side wall 271 facing the rear end of the connector housing 2. The positioning end surface 28 is used to limit the movement of the tail sleeve 5 toward the front end of the connector housing 2. In this way, when the connector housing 2 and the tail sleeve 5 are assembled, the tail sleeve 5 is inserted into the connector housing 2. When the first side wall 511 abuts against the third side wall 271, the front end of the tail sleeve 5 abuts against the positioning end surface 28, thereby realizing axial fixation of the connector housing 2 and the tail sleeve 5. In addition, in order to facilitate the disassembly of the tail sleeve 5 and the connector housing 2, the limiting groove 51 in this embodiment is provided with a movable pressing piece 52, which facilitates the movable spring piece 27 to be pressed out of the limiting groove 51 through the movable pressing piece 52.

[0051] refer to Figure 2 and Figure 6 Furthermore, an axially extending clamping groove 29 is provided at the tail end of the connector housing 2, and a plurality of first protrusions 291 and second protrusions 292 are respectively provided on the opposite side walls. In this way, when the optical cable is inserted from the tail end of the connector housing 2 and connected to the ferrule assembly 1, the optical cable can be clamped through the clamping groove 29. At the same time, the friction force of the optical cable in the clamping groove 29 is increased by the first protrusion 291 and the second protrusion 292, thereby improving the stability of the optical cable clamped in the clamping groove 29. In addition, in order to further improve the reliability of the clamping groove 29 clamping the optical cable, in this embodiment, a plurality of first protrusions 291 and second protrusions 292 are staggered along the axial direction of the connector housing 2, thereby improving the clamping force of the clamping optical cable.

[0052] Preferably, the connector housing and the tail boot in this embodiment are both made of transparent resin material, so as to facilitate observation or detection of the assembly effect of the connector. In addition, the connector housing is made by an integrated molding process.

[0053] When the connector in this embodiment is assembled:

[0054] First, insert the plug assembly 1 into the inner cavity 21 from the front end of the connector housing 2, and make the limiting hook 11 of the plug assembly 1 engage with the limiting protrusion 22 to prevent the plug assembly 1 from escaping from the front end of the connector housing 2 after being installed in the connector housing 2; at the same time, the two ends of the spring 4 respectively abut the second limiting surface 221 of the limiting protrusion 22 set on the inner side wall of the inner cavity 21 and the first limiting surface 12 of the plug assembly 1, and the elastic force of the spring 4 limits the movement of the plug assembly 1 toward the rear end of the connector housing 2, thereby achieving the limiting effect of the plug assembly 1; then, the cover body 31 is placed on the window 23 so that the cantilever The hook 32 is inserted into the mounting hole 24 and engaged with the slot 241 provided in the mounting hole 24; then, the external optical fiber is extended from the rear end of the connector housing 2, so that the external optical fiber is connected to the embedded optical fiber in the ferrule assembly 1, and part of the optical cable is placed in the clamping groove 29 to fix the optical cable, and the lock buckle 14 of the ferrule assembly 1 is moved to lock the optical fiber; finally, the tail sleeve 5 is put on, so that the movable spring piece 27 of the connector housing 2 is embedded in the limiting groove 51, and the third side wall 271 of the limiting spring piece abuts against the first side wall 511, and the front end of the tail sleeve 5 abuts against the positioning end face 28, so that the tail sleeve 5 is fixed.

[0055] When the connector of this embodiment is disassembled:

[0056] First, press the movable pressure piece 52 of the tail sleeve 5 to separate the movable spring piece 27 from the limiting groove 51 of the tail sleeve 5, and remove the tail sleeve 5. Then, move the lock 14 of the ferrule assembly 1 toward the tail end of the connector housing 2 to unlock the external optical fiber and remove the external optical fiber and the optical cable in the clamping part; then, separate the cantilever hook 32 from the slot 241 through the through hole 25 of the connector housing 2, and remove the cover 3; then, use a pry bar or a push rod to move the tail end of the ferrule assembly 1 toward the window 23, wherein the connector housing 2 in this embodiment is provided with an ejection hole 211 on the side facing away from the window 23, which facilitates the ejection of the ferrule assembly 1 from the ejection hole 211, so that the limiting hook 11 is disengaged from the limiting protrusion 22; finally, move the ferrule assembly 1 out of the front end of the connector housing 2.

[0057] In summary, on the one hand, the present invention provides a limiting protrusion 22 on the inner wall of the inner cavity 21 of the connector housing 2, and forms a limiting hook 11 at the tail of the ferrule assembly 1. When the ferrule assembly 1 is inserted into the inner cavity 21, the limiting hook 11 engages with the limiting protrusion 22 to achieve axial limitation of the ferrule assembly 1, preventing the ferrule assembly 1 from moving out of the front end of the connector; on the other hand, in order to facilitate the removal of the ferrule assembly 1 from the connector housing 2 when assembly problems occur or maintenance is required, an axially extending window 23 is provided on one side of the connector housing 2 at a position corresponding to the limiting protrusion 22. When the ferrule assembly 1 is disassembled, the limiting hook 11 at the tail of the ferrule assembly 1 is moved toward the window 23. When the limiting hook 11 leaves the limiting protrusion 22, the ferrule assembly 1 can be pulled out of the inner cavity 21, thereby realizing the separation of the ferrule assembly 1 from the connector housing 2, avoiding damage to parts during the disassembly of the ferrule assembly 1, and ensuring the performance of the connector;

[0058] In addition, in order to improve the stability of the ferrule assembly 1 when inserted into the inner cavity 21 and prevent the limiting hook 11 of the ferrule assembly 1 from being accidentally stressed and detached from the limiting protrusion 22, a cover plate 3 is provided to cover the window 23, and when the cover plate 3 is engaged with the connector housing 2, the cantilever hook 32 can be detached from the slot 241 through the through hole 25, which facilitates the disassembly of the cover plate 3 and avoids forced disassembly of the cover plate 3 and the connector housing 2.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An optical fiber connector, characterized in that: The connector comprises a core plug assembly, a connector shell and a cover plate, wherein the connector shell is provided with an axially extending inner cavity, the inner side wall of the inner cavity is provided with a limiting protrusion, the tail of the core plug assembly is provided with a limiting hook, the core plug assembly is inserted into the inner cavity and is engaged with the limiting protrusion through the limiting hook to limit the core plug assembly from moving toward the front end of the inner cavity, the connector shell is provided with an axially extending window at a position corresponding to the limiting protrusion, the tail of the core plug assembly can move toward the direction of the window when under pressure, and the connector shell has a retreat area for the core plug assembly to move within an axial preset range, so that when the core plug assembly is pressed and moves toward the rear end, the limiting hook and the limiting hook are engaged with each other. The protrusions form a spacing in the axial direction so that the core assembly can be moved out from the front end of the connector housing. The core assembly is provided with a first limiting surface facing the rear end of the core assembly, and the limiting protrusion is provided with a second limiting surface facing the front end of the connector housing. A spring is provided on the outside of the core assembly, and the two ends of the spring respectively abut the first limiting surface and the second limiting surface. The cover plate includes a cover body covering the window and a cantilever hook connected to the cover body. A slot is provided on at least one side of the window, and the cantilever hook is engaged with the slot. The cover body is provided with a first side surface facing the window, and the first side surface is provided with a protrusion in a direction facing away from the first side surface for abutting against the protrusion of the core assembly.

2. The optical fiber connector according to claim 1, wherein: A mounting hole is formed on a side surface of the connector housing where the window is formed, and the card slot is formed on an inner side wall of the mounting hole.

3. The optical fiber connector according to claim 2, wherein: A through hole is provided on one side of the card slot and is communicated with a side surface of the connector housing.

4. The optical fiber connector according to claim 2 or 3, characterized in that: There are two cantilever hooks, and the two sides of the window are respectively provided with the slots for engaging with the cantilever hooks.

5. The optical fiber connector according to claim 1, wherein: A positioning protrusion is provided on the inner side wall of the inner cavity, and the positioning protrusion is provided with a third limiting surface facing the front end of the connector housing. The core assembly is provided with a fourth limiting surface facing the rear end of the core assembly. A spring is provided on the outer side of the core assembly, and the two ends of the spring respectively abut the third limiting surface and the fourth limiting surface.

6. The optical fiber connector according to claim 1, wherein: It also includes a tail sleeve that is sleeved on the outside of the connector shell, a limiting groove is opened on one side of the tail sleeve, the limiting groove is provided with a first side wall facing the tail end of the tail sleeve, the connector shell is provided with a movable spring piece, the movable spring piece is provided with a third side wall facing the front end of the connector shell, the movable spring piece is provided with an end of the third side wall embedded in the limiting groove, and the third side wall is in contact with the first side wall.

7. The optical fiber connector according to claim 1, wherein: An axially extending clamping groove is provided at the tail of the connector housing. The clamping groove has two opposite side walls. The two opposite side walls are respectively provided with a plurality of first protrusions and a second protrusion. The plurality of first protrusions and the second protrusions are staggered along the axial direction of the connector housing.

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