A pre-relaxed fiber optic connector

Abstract

The application discloses a pre-relaxation optical fiber connector, which comprises a ferrule assembly, an outer shell, an inner shell, a spring, a stopper, a sliding block and a push-pull block. One end of the spring abuts against the ferrule assembly, and the other end of the spring abuts against the sliding block. The sliding block can change the length of the spring, thereby pushing and tightening the ferrule assembly, and the sliding block is fixed with the inner shell, so as to push and tighten the ferrule assembly. The push-pull block can push the sliding block to move, and the push-pull block can slide relative to the outer shell by a certain distance and drive the outer shell to move. The pre-relaxation optical fiber connector has the operation function of push-pull integration, which simplifies the operation steps and avoids the situation that a user forgets the second operation due to negligence when using the pre-relaxation optical fiber connector. In addition, the pre-relaxation optical fiber connector is used more simply and directly, and a user learns to use the pre-relaxation optical fiber connector more conveniently.

Description

Technical Field

[0001] This invention relates to the field of fiber optic connector technology, and more particularly to a pre-relaxed fiber optic connector. Background Technology

[0002] Multi-fiber connectors are connection devices used for re-mating between optical fibers, employing high-precision components to achieve micron-level precision connections between fibers. The MPO fiber connector is one of the most common types of multi-fiber connectors.

[0003] Multi-fiber connectors typically include two connectors (male and female) and an adapter. The connector with the fixing guide pin is called the male connector, and the connector that mates with the guide pin is called the female connector. The adapter is fitted onto the connection point of the male and female connectors to secure them together. The male and female connectors are positioned by the guide pins.

[0004] like Figure 1 As shown, CN 218824799 U includes a pre-relaxed fiber optic connector, comprising a ferrule assembly, a housing, an inner housing, a return spring, a slider, a stop, a tail sleeve, and a spring. The housing is fitted onto the inner housing and can slide along it. Return springs are located on the outer side and inner side of the inner housing, providing a reset function for the housing. The stop passes through the hollow portion of the slider and engages with the interior of the inner housing, forming a unified connector. The slider has a snap-fit ​​window, and the inner housing has an elastic arm with a wedge-shaped block. After the ferrule assembly is mated, pushing the slider forward compresses the wedge-shaped block, deforming the elastic arm and engaging the snap-fit ​​window. The slider is then fixed to the inner housing, and simultaneously, the slider compresses the spring, preventing it from retracting. At this point, one end of the spring abuts against the ferrule assembly, and the other end abuts against the slider, pushing the ferrule tight. During this mating process, when the connector is inserted into the adapter, the ferrule is not pushed tight, allowing for relative flexibility and easier mating. After mating, pushing the slider tightens the ferrule, resulting in a more secure connection.

[0005] However, mating these fiber optic connectors requires two steps: first, pinch the end sleeve and push the connector into the adapter; second, push the slider to tighten the ferrule. In practice, users, accustomed to using conventional non-pre-relaxed fiber optic connectors, only need to complete this one-step process, leading to a habit of only performing this step. When using pre-relaxed fiber optic connectors, this habit can easily cause users to forget the second step of tightening the ferrule. If the second step is not performed, the two ferrules will remain in a relatively free state, severely affecting the mating performance and causing high insertion loss, resulting in unstable signal transmission.

[0006] Therefore, a fiber optic connector is needed that can accomplish the above two steps in a single operation. Summary of the Invention

[0007] This invention provides a pre-relaxed fiber optic connector to solve the problem that users forget the second step of the operation when using a pre-relaxed fiber optic connector, which affects the mating performance of the ferrule.

[0008] A pre-relaxed fiber optic connector includes a ferrule assembly, a housing, an inner housing, a spring, a stop, a slider, a pressure ring, and a push-pull block;

[0009] The ferrule assembly includes a ferrule body and an optical fiber, wherein the optical fiber is disposed within an optical fiber hole in the ferrule body.

[0010] The inner housing is sleeved outside the ferrule assembly and limits the ferrule assembly. The inner housing includes a first snap-fit ​​portion that mates with the adapter.

[0011] The outer shell is fitted onto the outside of the inner shell, the stop is snapped and fixed to the inner shell, the optical fiber passes through the stop, and the pressure ring is disposed at the rear end of the stop and pressed against the outer periphery of the optical fiber;

[0012] One end of the spring abuts against the insert assembly, and the other end of the spring abuts against the slider;

[0013] The slider can change the spring length to push the insert assembly tight and fix it to the inner housing;

[0014] The push-pull block abuts against the slider, which can push the slider to move;

[0015] The push-pull block can push the slider to move, and the push-pull block can slide a certain distance relative to the outer shell, thereby moving the outer shell.

[0016] Furthermore, the push-pull block includes a push-pull block body and an extension arm disposed on one side of the push-pull block body. The extension arm extends into the interior of the outer shell, and the end of the extension arm has a first hook. The push-pull block can slide along a sliding area inside the outer shell, and a blocking part is provided at the end of the sliding area.

[0017] Furthermore, a protrusion is provided in the sliding area, which can hook the first hook.

[0018] Furthermore, the slider includes slots disposed on opposite sides, through which the extension arm passes.

[0019] Furthermore, the inner housing has an elastic arm with a second hook, and the slider includes an abutting part that abuts against the spring and a window disposed on the side. The window is engaged with the second hook to fix the slider to the inner housing.

[0020] Furthermore, the inner wall of the outer shell also includes a raised first inclined surface, and the elastic arm is provided with a raised second inclined surface.

[0021] Furthermore, the push-pull block includes a mounting groove, and the slider abuts within the mounting groove.

[0022] Furthermore, the sleeve portion of the outer shell and the inner shell is provided with a reset elastic member. The sleeve portion inside the outer shell includes a first abutting portion, and the sleeve portion outside the inner shell includes a second abutting portion. The first abutting portion and the second abutting portion abut against the two ends of the reset elastic member, respectively.

[0023] Furthermore, a pre-relaxed fiber optic connector also includes a push-pull tail sleeve, which is sleeved on the outer periphery of the fiber and can be pushed and pulled back and forth along the clamping ring and the fiber; the push-pull tail sleeve and the push-pull block are fixedly connected.

[0024] Furthermore, the push-pull tail sleeve also includes a through hole, the inner wall of which has a fixing groove, and the push-pull block body also includes a fixing part, the fixing part having a fixing hook, the fixing hook engaging with the fixing groove.

[0025] Furthermore, the fixing part also includes a fixing protrusion, and the push-pull tail sleeve is provided with a hole of a corresponding shape, and the fixing protrusion is disposed inside the hole.

[0026] Furthermore, the ferrule assembly also includes a guide post, the abutting portion has a first guide post hole, the stop has a guide post fixing hole, the guide post hole is a through hole, the guide post passes through the spring, one end of the guide post is fixed to the pin holder of the ferrule assembly, the guide post passes through the guide post hole, the other end of the guide post is fixed in the guide post fixing hole, and the slider can slide along the guide post.

[0027] Furthermore, there are two springs, which are respectively disposed on both sides of the optical fiber.

[0028] Beneficial effects:

[0029] Compared to pre-relaxed fiber optic connectors in the prior art, the push-pull block of the pre-relaxed fiber optic connector of the present invention can move independently, and the push-pull block is linked with the outer shell. The user can complete the two operation steps of inserting the pre-relaxed fiber optic connector and tightening the ferrule in one go by pinching the push-pull block and pushing it forward.

[0030] The user pinches the push-pull block and pulls it backward. The block first disengages from the outer casing, then moves the outer casing backward, thereby releasing the inner casing from the slider and ultimately releasing the pre-relaxed fiber optic connector from the adapter. This integrated push-pull operation simplifies the use of the pre-relaxed fiber optic connector and prevents users from forgetting the second step due to carelessness. Furthermore, since both connection and unlocking of the pre-relaxed fiber optic connector are performed using the same push-pull mechanism, its use is simpler and more direct, making it easier for users to learn and use.

[0031] In addition, the push-pull tail sleeve and the push-pull block are fixedly connected, which extends the length of the integrated push-pull component, making it easier for users to insert and remove the pre-relaxed fiber optic connectors in the present invention in high-density fiber optic connector arrays. This overcomes the problem that when the pre-relaxed fiber optic connectors in the present invention are used in high-density fiber optic connector arrays, the gaps between the connectors are small, making it difficult to insert fingers into the gaps and operate the push-pull block. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a pre-relaxed fiber optic connector in the prior art;

[0034] Figure 2 This is a schematic diagram of the pre-relaxed fiber optic connector in this invention;

[0035] Figure 3 This is a schematic diagram of the ferrule assembly in an embodiment of the present invention;

[0036] Figure 4 This is an assembly diagram of the inner shell, outer shell, and reset elastic element in an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the adapter structure in an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the inner shell structure in an embodiment of the present invention;

[0039] Figure 7 This is a schematic diagram of the outer shell structure in an embodiment of the present invention;

[0040] Figure 8This is an assembly diagram of the outer shell, push-pull block, and push-pull tail sleeve in an embodiment of the present invention;

[0041] Figure 9 This is a schematic diagram of the push-pull block structure in an embodiment of the present invention;

[0042] Figure 10 This is a schematic diagram of the push-pull tail sleeve in an embodiment of the present invention;

[0043] Figure 11 This is a schematic diagram of the slider structure in an embodiment of the present invention;

[0044] Figure 12 This is a schematic diagram of the stop structure in an embodiment of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 100. Pre-relaxed fiber optic connector; 1. Ferrule assembly; 11. Ferrule body; 12. Guide pin; 13. Pin holder; 14. Guide post; 2. Reset elastic element; 3. Housing; 31a / 31b. First abutment part; 32. Blocking part; 33. Protrusion part; 34. First bevel; 4. Inner housing; 41a / 41b. Second abutment part; 42. First snap-fit ​​part; 43. Elastic arm; 431. Second hook; 4311. Chamfer; 432. Second bevel; 5. Spring; 6. Stop; 61. Guide post fixing hole; 7. Slider; 71. Abutment 711, First guide post hole; 72, Window; 73, Groove; 8, Pressure ring; 9, Push-pull block; 91, Push-pull block body; 92a / 92b, Extension arm; 921a / 921b, First hook; 93a / 93b, Fixing part; 931a / 931b, Fixing hook; 932a / 932b, Fixing protrusion; 94, Mounting groove; 10, Push-pull tail sleeve; 101, Through hole; 102, Fixing groove; 103, Hole; 104, Flexible tail end; 1041, Notch; 200, Adapter; 21, Connecting part; 22, Connecting channel. Detailed Implementation

[0047] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0048] In the description of this invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] The pre-relaxed fiber optic connectors of this invention will be described below.

[0051] Example

[0052] This embodiment provides a pre-relaxed fiber optic connector 100, such as Figure 2-12 As shown, it includes a core assembly 1, a reset elastic element 2, an outer shell 3, an inner shell 4, a spring 5, a stop 6, a slider 7, a pressure ring 8, a push-pull block 9, and a push-pull tail sleeve 10.

[0053] This connector is a male connector. The ferrule assembly 1 includes a ferrule body 11, guide pins 12, a pin holder 13, a guide post 14, and an optical fiber (not shown in the attached diagram). The optical fiber is disposed within the fiber optic hole of the ferrule body. The difference between a female connector and a male connector is that the female connector's ferrule assembly does not have guide pins.

[0054] The inner shell 4 is fitted outside the ferrule assembly 1 and limits the ferrule assembly 1. The stop 6 is snapped and fixed to the inner shell 4, and the optical fiber passes through the stop 6.

[0055] Connector and adapter mating

[0056] The outer shell 3 is sleeved on the outside of the inner shell 4. The sleeved part of the outer shell 3 and the inner shell 4 is provided with a reset elastic element 2. After the outer shell 3 is subjected to force and moves backward, the reset elastic element 2 can make the outer shell 3 return to the initial position.

[0057] The inner sleeve portion of the outer shell 3 includes a first abutment portion 31a / 31b, and the outer sleeve portion of the inner shell 4 includes a second abutment portion 41a / 41b. The first abutment portion 31a / 31b and the second abutment portion 41a / 41b abut against both ends of the reset elastic member 2, respectively. In this example, the first abutment portion 31a / 31b abuts against the upper side of the reset elastic member 2, and the second abutment portion 41a / 41b abuts against the lower side of the reset elastic member 2.

[0058] The inner housing 4 has a first snap-fit ​​portion 42, which snaps into the mating portion 21 of the adapter 200. Then, the outer housing 3 wraps around the outside of the mating portion 21, completing the mating of the connector and the adapter. When the outer housing 3 is pushed back, it no longer wraps around the outside of the mating portion 21, and the mating portion 21 and the first snap-fit ​​portion 42 can be separated under the action of tension.

[0059] When the pre-relaxed fiber optic connector 100 mates with the adapter 200, the pre-relaxed fiber optic connector 100 enters the mating channel 22. The mating part 21 of the adapter 200 is pushed open by the inner housing 4. Subsequently, the outer housing 3 touches the mating part 21 and is pushed back. The pre-relaxed fiber optic connector 100 is pushed forward, and the mating part 21 engages with the first snap-fit ​​part 42 of the inner housing. The mating part 21 returns to its normal width and no longer pushes against the outer housing 3. Under the action of the reset elastic element 2, the outer housing 3 springs back to its initial position. At this time, the outer housing 3 wraps around the mated first snap-fit ​​part 42, and the first snap-fit ​​part 42 cannot widen and detach from the mating part 21. The pre-relaxed fiber optic connector 100 and the adapter 200 are mated.

[0060] Pre-relaxation and tightening of the ferrule body

[0061] The push-pull block 9 is disposed on the outer periphery of the stop 6. The push-pull block 9 includes a push-pull block body 91. An extension arm 92a / 92b disposed on one side of the push-pull block body 91 extends into the interior of the outer shell 3. The end of the extension arm 92a / 92b has a first hook 921a / 921b. The push-pull block 9 can slide along the sliding area inside the outer shell 3. A blocking part 32 is provided at the end of the sliding area. The blocking part 32 can block the first hook 921a / 921b and prevent the extension arm 92a / 92b from detaching from the outer shell 3. A protrusion 33 is provided in the sliding area. The protrusion 33 can hook the first hook 921a / 921b.

[0062] When the push-pull block 9 is pushed inward along the outer shell 3, the extension arms 92a / 92b elastically deform and then spring back. At this time, the first hooks 921a / 921b hook the protrusion 33, and at the same time, the push-pull block body 91 presses against the end of the outer shell 3, and the push-pull block 9 is fixed relative to the outer shell 3.

[0063] The push-pull tail sleeve 10 includes a through hole 101. After the pressure ring 8 crimps the optical fiber, the push-pull tail sleeve 10 is fitted onto the pressure ring 8 and the outer periphery of the optical fiber. The push-pull tail sleeve 10 can be pushed and pulled back and forth along the pressure ring 8 and the optical fiber, with the pressure ring 8 located within the through hole 101. The push-pull tail sleeve 10 is fitted onto the outside of the push-pull block 9, and the two are fixedly connected, forming a single component that moves together. The fixed connection between the push-pull tail sleeve and the push-pull block extends the length of the integrated push-pull component, facilitating the insertion and removal of the pre-relaxed optical fiber connectors in high-density optical fiber connector arrays. This overcomes the problem that when the pre-relaxed optical fiber connectors are used in high-density optical fiber connector arrays, the gaps between the connectors are small, making it difficult to insert fingers into the gaps and operate the push-pull block.

[0064] More specifically, the push-pull tail sleeve 10 has a certain degree of elasticity, and can be engaged with the push-pull block 9 under the action of external force to form a snap-fit ​​fixation. On the other side of the push-pull block body 91, there is a fixing part 93a / 93b, and the fixing part 93a / 93b has a fixing hook 931a / 931b. The inner wall of the through hole 101 of the push-pull tail sleeve 10 has a fixing groove 102, and the fixing groove 102 engages with the fixing hook 931a / 931b.

[0065] Because the fixing groove 102 is connected to the fixing hooks 931a / 931b, the push-pull tail sleeve 10 may still twist circumferentially along the fiber axis. Therefore, the fixing parts 93a / 93b also have fixing protrusions 932a / 932b, and the push-pull tail sleeve 10 is provided with corresponding holes 103 of the same shape. The holes 103 are through holes, and the fixing protrusions 932 are located inside the holes 103. This design can increase the fixing stability of the push-pull tail sleeve 10 and the push-pull block 9, preventing the push-pull tail sleeve 10 from rotating and affecting the user's feel. On the other hand, the through hole design can provide an indicator to remind the user whether the connection between the push-pull tail sleeve 10 and the push-pull block 9 is installed correctly.

[0066] The push-pull block 9 has a mounting groove 94 inside, and one side of the slider 7 abuts against the mounting groove 94. For example... Figure 10 As shown, the slider 7 includes an abutting part 71 that abuts against the spring 5, windows 72 provided on two opposite sides, and grooves 73 provided on two other opposite sides; the extension arms 92a / 92b pass through the grooves 73, and the slider 7 can slide up and down relative to the push-pull block 9 along the extension arms 92a / 92b.

[0067] The abutting part 71 abuts against one end of the spring 5, and the other side of the spring 5 abuts against the insert assembly; thus, when the push-pull block 9 is pushed, the push-pull block 9 pushes against the slider 7 to move, the slider 7 presses against the spring 5, the spring is subjected to force and pushes against the insert assembly 1, so that the insert can remain stable during use.

[0068] In another embodiment, the abutment portion 71 also has a first guide post hole 711, and the stop 6 has a guide post fixing hole 62. The first guide post hole 711 is a through hole. A guide post 14 is inserted into the spring 5. One end of the guide post 14 is fixed to the pin holder 13 of the insert assembly 1. The guide post 14 passes through the first guide post hole 711, and the other end of the guide post 14 is fixed to the guide post fixing hole 62. The slider can slide along the guide post 14. This makes the spring more stable during compression and also increases the smoothness of the slider and push-pull block during movement.

[0069] The inner shell has an elastic arm 43, and the elastic arm 43 has a second hook 431. The second hook 431 has a chamfer 4311. When the slider 7 is pushed in, the slider presses against the chamfer 4311, the elastic arm 43 deforms and extends into the inside of the slider 7. As the slider 7 continues to be pushed in, the second hook 431 springs back to the window 72 and locks in the window 72. At this time, the locking of the second hook 431 and the window 72 can prevent the slider from retracting, and at the same time the insert is pushed tight.

[0070] After the male connector is installed into the adapter, the female connector is inserted into the adapter. The female connector's ferrule is always in a state of no force or slight force. The guide pins on the male connector's ferrule can easily correct the relatively offset female connector ferrule, so that the two connector ferrules are in a good mating position, which facilitates precise mating between the two ferrules.

[0071] As the push-pull tail sleeve 10 pushes the push-pull block 9 along the outer shell 3, the slider 7 is also pushed forward by the push-pull block 9. The spring 5 begins to apply pressure to the ferrule body 11, and the ferrule body 11 is pressed tightly against the inner side of the inner shell 4. The push-pull tail sleeve 10 continues to push the push-pull block 9, and the push-pull block 9 engages with the protrusion 33 inside the outer shell 3. As it continues to push forward, the slider 7 engages with the elastic arm 43 of the inner shell 4. After the pushing force is released, the slider cannot move backward, completing the ferrule tightening operation. At this time, the ferrules of the two connectors are precisely aligned and both are tightened.

[0072] Therefore, the two-step operation of "adapter docking" and "molding pre-loosening and tightening" can be completed in one operation.

[0073] Disconnect the ferrule

[0074] When it is necessary to disconnect the connection between the two cores and pull the connector out of the adapter 200, simply pull the push-pull tail sleeve 10. The push-pull tail sleeve 10 drives the push-pull block 9 to overcome the resistance of the engagement with the outer shell 3 and slide to the end of the sliding area inside the outer shell 3. At this time, due to the interference between the push-pull block 9 and the outer shell 3, continue to pull the push-pull tail sleeve 10. The push-pull tail sleeve 10 drives the outer shell 3 to move backward through the push-pull block 9.

[0075] When the outer shell 3 moves backward, the first protruding inclined surface 34 inside will press the second protruding inclined surface 432 on the elastic arm 43 of the inner shell 4, forcing the elastic arm 43 to bend and deform inward. At this time, the second hook 431 on the elastic arm 43 disengages from the window 72 on the slider 7, and the slider 7 springs back to the mounting groove 94 of the push block 9 under the push of the spring 5.

[0076] Continue to pull the push-pull tail sleeve 10 backward. The push-pull tail sleeve 10 continues to drive the outer shell 3 to move backward. The outer shell 3 no longer covers the docking part 21 of the adapter 200. At this time, the docking between the adapter 200 and the inner shell 4 can be pulled apart under external pulling force.

[0077] This way, simply pulling the push-pull tail sleeve 10 is enough to loosen the ferrule assembly 1 and remove the fiber optic connector from the adapter in one go. Furthermore, since the slider 7 is pushed into the housing 3 when the ferrule is in the tightened state, and exposed in the housing 3 when the ferrule is in the loosened state, the slider 7 can be set to a special color to indicate whether the ferrule is in the tightened state.

[0078] In addition, the push-pull tail sleeve 10 also includes a flexible tail end 104, which is wrapped around the optical fiber. Multiple notches 1041 are provided on the outer surface of the flexible tail end 104. The notches 1041 are arranged in multiple positions on the outer surface of the flexible tail end 104 so that the flexible tail end 104 can allow the optical fiber to bend at a certain angle, thus avoiding damage to the optical fiber due to excessive bending angle.

[0079] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A pre-relaxed fiber optic connector, characterized in that, Includes ferrule assembly, outer shell, inner shell, spring, stop, slider, and push-pull block. The inner housing is fitted over the outside of the ferrule assembly and limits the ferrule assembly. The inner housing includes a first snap-fit ​​portion that mates with the adapter. The outer shell is fitted over the outer side of the inner shell, the stop is snapped into and fixed to the inner shell, and the optical fiber passes through the stop. One end of the spring abuts against the insert assembly, and the other end of the spring abuts against the slider. The slider can change the spring length to push the insert assembly tighter, and can be fixed to the inner housing. The push-pull block can push the slider to move, and the push-pull block can slide a certain distance relative to the outer shell, thereby moving the outer shell.

2. A pre-relaxed fiber optic connector as described in claim 1, characterized in that, The push-pull block includes a push-pull block body and an extension arm disposed on one side of the push-pull block body. The extension arm extends into the interior of the outer shell, and the end of the extension arm has a first hook. The push-pull block can slide along a sliding area inside the outer shell, and a blocking part is provided at the end of the sliding area.

3. A pre-relaxed fiber optic connector as described in claim 2, characterized in that, The sliding area is provided with a protrusion, which can hook the first hook.

4. A pre-relaxed fiber optic connector as described in claim 2, characterized in that, The slider includes slots disposed on opposite sides, through which the extension arm passes.

5. A pre-relaxed fiber optic connector as described in claim 1, characterized in that, The inner housing has an elastic arm with a second hook. The slider includes an abutting part that abuts against the spring and a window disposed on the side. The window is engaged with the second hook to fix the slider to the inner housing.

6. A pre-relaxed fiber optic connector as described in claim 5, characterized in that, The inner wall of the outer shell also includes a first protruding inclined surface, and the elastic arm is provided with a second protruding inclined surface.

7. A pre-relaxed fiber optic connector as described in claim 1, characterized in that, The push-pull block includes a mounting groove, and the slider abuts against the mounting groove.

8. A pre-relaxed fiber optic connector as described in any one of claims 1-7, characterized in that, The outer shell and the inner shell are fitted with a reset elastic member at the fitting portion. The fitting portion inside the outer shell includes a first abutting portion, and the fitting portion outside the inner shell includes a second abutting portion. The first abutting portion and the second abutting portion abut against the two ends of the reset elastic member, respectively.

9. A pre-relaxed fiber optic connector as described in claim 2, characterized in that, It also includes a push-pull tail sleeve, which is disposed on the outer periphery of the optical fiber. The push-pull tail sleeve can be pushed and pulled back and forth along the optical fiber, and the push-pull tail sleeve and the push-pull block are fixedly connected.

10. A pre-relaxed fiber optic connector as described in claim 9, characterized in that, The push-pull tail sleeve also includes a through hole, the inner wall of which has a fixing groove, and the push-pull block body also includes a fixing part, the fixing part having a fixing hook, the fixing hook engaging with the fixing groove.

11. A pre-relaxed fiber optic connector as described in claim 10, characterized in that, The fixing part also includes a fixing protrusion, and the push-pull tail sleeve is provided with a hole of a corresponding shape, and the fixing protrusion is disposed inside the hole.

12. A pre-relaxed fiber optic connector as described in claim 5, characterized in that, The insert assembly also includes a guide post, and the abutment portion has a first guide post hole. The stop has a guide post fixing hole. The guide post hole is a through hole. The guide post passes through the spring. One end of the guide post is fixed to the pin holder of the insert assembly. The guide post passes through the guide post hole. The other end of the guide post is fixed in the guide post fixing hole. The slider can slide along the guide post.

13. A pre-relaxed fiber optic connector as described in claim 12, characterized in that, The springs are two in number and are respectively located on both sides of the optical fiber.

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