An MPO fiber optic connector

Abstract

The present invention relates to the technical field of connectors, and discloses an MPO fiber optic connector, which includes a core component and a housing component; the core component includes an optical fiber bearing mechanism, an elastic compression ring and a positioning mechanism that are sequentially slidably connected to the optical fiber bearing mechanism in a first direction. The optical fiber bearing mechanism is used for splicing with an optical fiber connection adapter, and is internally connected to the optical fiber through an optical fiber jack opened therein. At least a part of the optical fiber bearing mechanism abuts against one end of the elastic compression ring, and at least a part of the end face of the positioning mechanism abuts against the other end of the elastic compression ring; an installation cavity is opened inside the housing component. The MPO fiber optic connector has a compact overall structure, effectively reduces the overall length of the connector, is suitable for high-density wiring environments, improves the uniformity of the contact pressure at the optical fiber connection point, improves the overall connection quality, and further improves the stability of the optical fiber connection and reduces the decline.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and particularly to an MPO fiber optic connector. Background Art

[0002] With the rapid development of information technologies such as big data, cloud computing, and the Internet of Things, the demand for network bandwidth and data transmission rate in facilities such as data centers and communication base stations is increasing continuously. Fiber optic communication has become the core infrastructure of modern communication networks due to its advantages such as high bandwidth, low latency, and strong anti-interference ability. In high-density wiring environments such as data centers and communication base stations, fiber optic connectors, as key components in fiber optic networks, play an important role in connecting and transmitting optical signals. Therefore, the performance and reliability of fiber optic connectors directly affect the stability of the entire network and the data transmission efficiency.

[0003] In the prior art, MPO (Multi-Fiber Push-Pull Connector) fiber optic connectors usually adopt spring and buckle structures to achieve fiber connection and fixation. A typical MPO fiber optic connector includes a core component and a housing component. The core component includes a fiber bearing member, a spring, and a positioning member. The fiber bearing member is used to accommodate fiber plug-in parts. The spring is arranged between the fiber bearing member and the positioning mechanism, and the fixation of fiber connection is achieved through the compression force of the spring (that is, the fiber bearing member is continuously pushed against the connection part of the fiber connection adapter by the elastic force, so that the signal can be stably transmitted, and the loosening of the connection between the fiber bearing member and the fiber connection adapter is avoided, which affects the stability of fiber connection signal transmission). The positioning mechanism is used to position and fix the fiber bearing mechanism. However, in practical applications, the traditional spring and buckle structure MPO fiber optic connectors have the problem that the setting of the spring needs to occupy a certain axial space, resulting in an increase in the overall length of the connector, which is not conducive to high-density wiring in a narrow space. Moreover, in a multi-fiber connector, the forces of multiple springs may be uneven, resulting in different contact pressures at each fiber connection point, thereby affecting the overall connection quality, leading to a decrease in the stability of fiber connection and affecting the reliability of data transmission. Summary of the Invention

[0004] The purpose of the present invention is to provide an MPO fiber optic connector with a compact overall structure, which effectively reduces the overall length of the connector, is suitable for high-density wiring environments, and improves the uniformity of contact pressure at fiber connection points, thereby improving the overall connection quality and further improving the stability of fiber connection.

[0005] To achieve the above purposes, the present invention is realized through the following technical solutions:

[0006] Design an MPO fiber optic connector, including a core component and a housing component;

[0007] The core component includes an optical fiber bearing mechanism, an elastic compression ring, and a positioning mechanism that are sequentially slidably connected to the optical fiber bearing mechanism in a first direction. The optical fiber bearing mechanism is used to splicing with an optical fiber connection adapter, and is internally connected to the optical fiber through an optical fiber jack opened therein. At least part of the optical fiber bearing mechanism abuts against one end of the elastic compression ring, and at least part of the end face of the positioning mechanism abuts against the other end of the elastic compression ring;

[0008] An installation cavity is opened inside the housing component. The optical fiber bearing mechanism, the elastic compression ring, and the positioning mechanism are all slidably connected in the installation cavity in a first direction. The positioning mechanism and the installation cavity are locked by a stop component.

[0009] Optionally, the stop component includes a locking rod and a locking block. One end of the locking block is connected to the end face of the positioning mechanism facing the elastic compression ring, and at least part of it coincides with the elastic compression ring in the projection along the second direction. The locking rod is slidably connected inside the housing component in the second direction and at least part of it is located in the installation cavity. One end of the locking rod facing the elastic compression ring is trapezoidally arranged. The two edges of the surface of the locking block facing the locking rod along the first direction are both provided with slopes that cooperate with the locking rod.

[0010] Optionally, the stop component further includes a locking plate. One end of the locking block is fixedly connected to one end of the locking plate, and the other end of the locking plate is fixedly connected to the end face of the positioning mechanism facing the elastic compression ring.

[0011] Optionally, the elastic compression ring includes an elastic compression sleeve and two fixing rings. One of the fixing rings is fixedly connected to one end of the elastic compression sleeve and abuts against the optical fiber bearing mechanism, and the other fixing ring is fixedly connected to the other end of the elastic compression sleeve and abuts against the positioning mechanism. The elastic compression sleeve and the two fixing rings are all sleeved on the outer surface of the optical fiber bearing mechanism. The outer surface of one of the fixing rings is sleeved outside the locking plate through a groove opened therein. The elastic compression sleeve and the locking block at least partly coincide in the projection along the second direction.

[0012] Optionally, the optical fiber bearing mechanism includes an optical fiber bearing shell and a closing cover. The optical fiber jack is opened at one end of the optical fiber bearing shell. The surface of the optical fiber bearing shell is detachably connected to the closing cover through a groove opened therein. The elastic compression ring is sleeved on the surfaces of the optical fiber bearing shell and the closing cover. A clamping groove for clamping the optical fiber outer skin is formed between the optical fiber bearing shell and the closing cover, and the clamping groove communicates with the optical fiber jack.

[0013] Optionally, a limiting block is fixedly connected to the inner wall of the installation cavity, and a limiting groove is correspondingly opened on the surface of the optical fiber bearing shell for the limiting block. The limiting block is slidably connected in the limiting groove in the first direction for assisting in positioning the optical fiber bearing shell.

[0014] Optionally, the positioning mechanism includes a positioning ring block and a wire bundling shell. The positioning ring block is sleeved on the surfaces of the optical fiber bearing shell and the closing cover, and is connected with a clearance to the surfaces of the optical fiber bearing shell and the closing cover. One end of the locking plate is fixedly connected to one end of the positioning ring block, and the other end of the positioning ring block is fixedly connected to the wire bundling shell.

[0015] Optionally, the positioning mechanism further includes a tee shell. One end of the tee shell is connected to the wire bundling shell. The projections of the other two ends of the tee shell in the second direction coincide with each other. The inner walls of the bent transition parts between the end of the tee shell connected to the wire bundling shell and the other two ends are all arranged in an arc shape.

[0016] Optionally, the housing assembly includes an abutting shell and a protective shell. The protective shell is slidably connected inside the abutting shell. A sliding groove is formed on the outer surface of the protective shell. A slider is fixedly connected to the inner side wall of the abutting shell corresponding to the sliding groove. The installation cavity is formed inside the protective shell. One end of the abutting shell abuts against the outer surface of the optical fiber connection adapter.

[0017] Optionally, a rubber pad is fixedly connected to the end face of the abutting shell facing the optical fiber connection adapter.

[0018] The present invention provides an MPO optical fiber connector, which has the following beneficial effects:

[0019] The MPO optical fiber connector mounts and bears the optical fiber for connection through the optical fiber bearing mechanism provided by the core assembly. The elastic compression ring and the positioning mechanism are both sleeved on the outer surface of the optical fiber bearing mechanism. Through the setting of the elastic compression ring, when the optical fiber bearing mechanism abuts against the optical fiber connection adapter and moves back in the first direction in the installation cavity, the positioning mechanism is locked with the installation cavity through the stop component, and the positioning mechanism cannot move in the installation cavity. Thus, one end of the elastic compression ring cannot move, and the optical fiber bearing mechanism pushes the elastic compression ring to contract. At this time, the elastic compression ring will generate an elastic acting force to push the optical fiber bearing mechanism to tightly abut against the optical fiber connection adapter in return (through a certain displacement elastic margin, it can avoid the connection looseness or damage between the optical fiber bearing mechanism and the optical fiber connection adapter caused by hard connection). When the elastic compression ring is stressed, it can evenly disperse the pressure, ensuring that the contact pressure at each optical fiber connection point is consistent, avoiding the problem of uneven force distribution caused by the non-linear compression characteristics of the traditional spring, ensuring the stability of the optical fiber connection, and the elastic compression ring is directly sleeved on the outer surface of the optical fiber bearing mechanism, making the overall structure compact, effectively reducing the overall length of the connector, and being applicable to high-density wiring environments. Description of the Drawings

[0020] Figure 1 It is an exploded structural schematic diagram of the MPO optical fiber connector in the present invention;

[0021] Figure 2Schematic diagram of the installation structure of the MPO fiber optic connector in the present invention;

[0022] Figure 3 Schematic three-dimensional structure diagram of the MPO fiber optic connector in the present invention;

[0023] Figure 4 Schematic cross-sectional structure diagram of the MPO fiber optic connector before installation in the present invention;

[0024] Figure 5 Schematic cross-sectional structure diagram of the MPO fiber optic connector after installation in the present invention.

[0025] In the figure: 100, core component; 110, optical fiber carrier mechanism; 111, optical fiber carrier housing; 112, closing cover; 113, clamping groove; 114, limiting groove; 120, elastic compression ring; 121, elastic compression sleeve; 122, fixing ring; 130, positioning mechanism; 131, positioning ring block; 132, wire bundling housing; 133, tee housing; 200, housing component; 210, abutting housing; 220, protective housing; 230, installation cavity; 240, limiting block; 250, rubber pad; 300, stop component; 310, locking rod; 320, locking block; 330, locking plate. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 to 5 , the present invention provides a technical solution: an MPO fiber optic connector, including a core component 100 and a housing component 200;

[0028] The core component 100 includes an optical fiber carrier mechanism 110, and an elastic compression ring 120 and a positioning mechanism 130 that are sequentially slidably connected to the optical fiber carrier mechanism 110 along a first direction. The optical fiber carrier mechanism 110 is used to be spliced with an optical fiber connection adapter, and is internally connected to the optical fiber through an opened optical fiber jack. At least a part of the optical fiber carrier mechanism 110 abuts against one end of the elastic compression ring 120, and at least a part of the end face of the positioning mechanism 130 abuts against the other end of the elastic compression ring 120;

[0029] An installation cavity 230 is opened inside the housing component 200. The optical fiber carrier mechanism 110, the elastic compression ring 120, and the positioning mechanism 130 are all slidably connected to the installation cavity 230 along the first direction, and the positioning mechanism 130 is locked with the installation cavity 230 through a stop component 300;

[0030] The optical fiber bearing mechanism 110 is used to fix the optical fiber connector. That is, the optical fiber bearing mechanism 110 is connected to the optical fiber. The optical fiber is composed of an optical fiber core and an optical fiber skin. The optical fiber jack is used to connect to the optical fiber core for optical fiber signal transmission. The optical fiber bearing mechanism 110 is a known prior art, which can be pin - type or pinless, and both need to be connected through an optical fiber connection adapter, or it can be understood that both need to be connected to the optical fiber connection adapter to ensure the stable connection of the optical fiber. The elastic compression ring 120 provides a compression force and abuts against the optical fiber bearing mechanism 110, ensuring the tightness and stability of the connection and avoiding the loosening of the optical fiber connection. Through the setting of the elastic compression ring 120, when the optical fiber bearing mechanism 110 abuts against the optical fiber connection adapter and moves back along the first direction in the installation cavity 230, the positioning mechanism 130 and the installation cavity 230 are locked by the stop component 300, and the positioning mechanism 130 cannot move in the installation cavity 230. Thus, one end of the positioning mechanism 130 that abuts against the elastic compression ring 120 cannot move, and the optical fiber bearing mechanism 110 pushes the elastic compression ring 120 to contract. At this time, the elastic compression ring 120 will generate an elastic reaction force to push the optical fiber bearing mechanism 110 to tightly abut against the optical fiber connection adapter. Through a certain displacement elastic margin, it can avoid the loosening or damage of the connection between the optical fiber bearing mechanism 110 and the optical fiber connection adapter caused by hard connection. Through the connection between the positioning mechanism 130 and the optical fiber bearing mechanism 110, when the optical fiber bearing mechanism 110 slides in the installation cavity 230, it can slide within the positioning mechanism 130.

[0031] In this embodiment, as a preferred solution, the stop component 300 includes a locking rod 310 and a locking block 320. One end of the locking block 320 is connected to the end face of the positioning mechanism 130 facing the elastic compression ring 120, and at least part of it coincides with the projection of the elastic compression ring 120 along the second direction. The locking rod 310 is slidably connected in the housing assembly 200 along the second direction and at least part of it is located in the installation cavity 230. The end of the locking rod 310 facing the elastic compression ring 120 is trapezoid - shaped. The two edges of the surface of the locking block 320 facing the locking rod 310 along the first direction are both provided with slopes that cooperate with the locking rod 310;

[0032] During the installation process, first, the elastic compression ring 120 is sleeved on the outer surface of the optical fiber bearing mechanism 110, and one end thereof abuts against the optical fiber bearing mechanism 110. Subsequently, the positioning mechanism 130 is also sleeved on the outer surface of the optical fiber bearing mechanism 110 and abuts against the other end of the elastic compression ring 120. Then, holding the positioning mechanism 130, the optical fiber bearing mechanism 110 and the elastic compression ring 120 are pushed into the installation cavity 230. The locking block 320 is arranged on the positioning mechanism 130. As the positioning mechanism 130 enters the installation cavity 230, the trapezoidally arranged locking rod 310 has two slopes at one end. When one slope of the locking block 320 first contacts one slope of the locking rod 310, the locking rod 310 is pushed to rise along the second direction. Subsequently, the transition part between the two slopes of the locking rod 310 abuts against the transition part between the two slopes of the locking block 320. Then, the other slope of the locking block 320 contacts the other slope of the locking rod 310, and at the same time, the locking rod 310 falls along the second direction. When the locking block 320 moves back along the first direction and the locking rod 310 cannot rise along the second direction, the locking block 320 and the positioning mechanism 130 are locked, so that the positioning mechanism 130 cannot slide out of the installation cavity 230, thus achieving locking.

[0033] In this embodiment, as a preferred solution, the stop assembly 300 further includes a locking plate 330. One end of the locking block 320 is fixedly connected to one end of the locking plate 330, and the other end of the locking plate 330 is fixedly connected to the end face of the positioning mechanism 130 facing the elastic compression ring 120.

[0034] Through the connection between the locking plate 330 and the locking block 320, a connection is generated between the positioning mechanism 130 and the locking block 320. At the same time, the locking plate 330 does not affect the slopes of the locking block 320, and the locking plate 330 has a certain toughness, that is, it can be bent along the second direction, bent under pressure, rather than being subjected to tensile force. This can avoid the situation that, like a buckle, it is easy to break after being used for a long time. And when the buckle is engaged, when the buckle opening expands to both sides, there is no auxiliary reset force, and only relying on its own tensile strength, it is easy to lose the reset ability after being used multiple times due to fatigue, resulting in loosening of the connection and easy detachment of the positioning mechanism 130.

[0035] In this embodiment, as a preferred solution, the elastic compression ring 120 includes an elastic compression sleeve 121 and two fixing rings 122. One of the fixing rings 122 is fixedly connected to one end of the elastic compression sleeve 121 and abuts against the optical fiber bearing mechanism 110, and the other fixing ring 122 is fixedly connected to the other end of the elastic compression sleeve 121 and abuts against the positioning mechanism 130. The elastic compression sleeve 121 and the two fixing rings 122 are all sleeved on the outer surface of the optical fiber bearing mechanism 110. The outer surface of one of the fixing rings 122 is sleeved outside the locking plate 330 through a groove opened, and at least part of the elastic compression sleeve 121 and the locking block 320 overlap in the second direction projection;

[0036] Through the action of the fixing ring 122, it abuts against the optical fiber bearing mechanism 110 and the positioning mechanism 130, which belongs to a hard connection. The fixing ring 122 can also slide along the first direction in the installation cavity 230 and abut against the inner wall of the installation cavity 230 to avoid tilting and prevent the flexible deformation of the elastic compression sleeve 121 from causing displacement of part of the same end face of the elastic compression sleeve 121. Since part of it does not displace, the elastic force is uneven. The design of the fixing ring 122 ensures the uniform distribution of the elastic force. While providing the necessary elastic force, the elastic compression sleeve 121 restricts unnecessary deformation through the action of the fixing ring 122, avoiding the problem of unstable connection caused by the uneven deformation of the elastic compression sleeve 121.

[0037] In this embodiment, as a preferred solution, the optical fiber bearing mechanism 110 includes an optical fiber bearing shell 111 and a closing cover 112. The optical fiber jack is opened at one end of the optical fiber bearing shell 111. The surface of the optical fiber bearing shell 111 is detachably connected to the closing cover 112 through a groove opened. The elastic compression ring 120 is sleeved on the surfaces of the optical fiber bearing shell 111 and the closing cover 112. A clamping groove 113 for clamping the optical fiber outer skin is formed between the optical fiber bearing shell 111 and the closing cover 112, and the clamping groove 113 communicates with the optical fiber jack;

[0038] The optical fiber bearing shell 111 provides the basic optical fiber connection function, while the closing cover 112, through the detachable design, increases the connection flexibility and the convenient disassembly and maintenance functions, facilitating the replacement of the optical fiber. Through the design of the clamping groove 113, the stability and safety of the optical fiber in the connector are ensured, avoiding possible loss or interference during the optical signal transmission process. At the same time, by clamping the skin of the optical fiber (the outer rubber layer of the optical fiber) by the closing cover 112 and the optical fiber bearing shell 111, it also avoids accidental detachment of the optical fiber from the clamping groove 113 between the optical fiber bearing shell 111 and the closing cover 112 when the optical fiber is accidentally pulled;

[0039] And through the interference fit between the transition part of the locking block 320 and the wall surface of the installation cavity 230, that is, when the locking block 320 slides into the installation cavity 230, the inner wall of the installation cavity 230 will exert a squeezing force along the second direction on the locking block 320, and the locking block 320 will apply the squeezing force on the surface of the elastic compression sleeve 121. The elastic compression sleeve 121 will generate a reaction force along the second direction, and a part of it acts on the closing cover 112. By squeezing the closing cover 112, the closing cover 112 is continuously pressed against the optical fiber bearing shell 111, thereby further stably clamping the optical fiber, avoiding accidental extraction of the optical fiber. At the same time, the applicable range of the optical fiber can be improved. For example, for optical fibers of different sizes, it can play a compensating role and improve the stability of clamping the optical fiber.

[0040] In this embodiment, as a preferred solution, a limiting block 240 is fixedly connected to the inner wall of the installation cavity 230, and a limiting groove 114 is correspondingly opened on the surface of the optical fiber bearing shell 111 for the limiting block 240. The limiting block 240 is slidably connected in the limiting groove 114 along the first direction for assisting in positioning the optical fiber bearing shell 111.

[0041] Through the connection between the limiting block 240 and the limiting groove 114, the moving range of the optical fiber bearing shell 111 in the installation cavity 230 can be limited, avoiding the optical fiber bearing shell 111 from passing through the installation cavity 230 and ensuring the stability during connection and use.

[0042] In this embodiment, as a preferred solution, the positioning mechanism 130 includes a positioning ring block 131 and a line bundling shell 132. The positioning ring block 131 is sleeved on the surfaces of the optical fiber bearing shell 111 and the closing cover 112 and is connected with a clearance to the surfaces of the optical fiber bearing shell 111 and the closing cover 112. One end of the locking plate 330 is fixedly connected to one end of the positioning ring block 131, and the other end of the positioning ring block 131 is fixedly connected to the line bundling shell 132.

[0043] By sleeving the positioning ring block 131 on the surfaces of the optical fiber bearing shell 111 and the closing cover 112 and connecting it with a clearance to the optical fiber bearing shell 111 and the closing cover 112, it is to avoid that when the optical fiber is relatively thick, the closing cover 112 has no displacement margin. Through the connection between the positioning ring block 131 and the locking plate 330, the positioning ring block 131 can drive the locking plate 330 to move along the first direction. Through the function of the line bundling shell 132, it can assist in bundling the optical fiber.

[0044] In this embodiment, as a preferred solution, the positioning mechanism 130 further includes a tee shell 133. One end of the tee shell 133 is connected to the line bundling shell 132, and the other two ends of the tee shell 133 overlap in the projection along the second direction. The inner walls of the bent transition parts between the end of the tee shell 133 connected to the line bundling shell 132 and the other two ends are all arranged in an arc shape.

[0045] Through the arc-shaped transition part of the tee shell 133, first, one of the open ends is connected to the line converging shell 132 for wire outlet. That is, the optical fiber line enters the line converging shell 132, and the other two open ends face opposite directions respectively, aiming to cooperate with the installation of lines with different orientations. When used in a relatively narrow environment, for example, when the inlet or outlet of the optical fiber faces the space wall, the optical fiber must be bent. Through the setting of the arc-shaped transition part, it can ensure a smooth transition when the optical fiber is bent, avoid right-angle bending that may cause the optical fiber core inside the optical fiber to break and affect the use, play an auxiliary protection role for the optical fiber, further improve the applicability when used in a narrow environment, and at the same time, when the optical fiber is accidentally pulled, it can also avoid the optical fiber from bending and breaking.

[0046] The first direction is a reciprocating straight-line direction, not limited to just one orientation. That is, when the first direction points north and south, moving along the first direction can be understood as moving towards the north or moving towards the south.

[0047] In this embodiment, as a preferred solution, the housing assembly 200 includes an abutting shell 210 and a protective shell 220. The protective shell 220 is slidably connected inside the abutting shell 210. A chute is provided on the outer surface of the protective shell 220, and a slider is fixedly connected to the inner side wall of the abutting shell 210 correspondingly. An installation cavity 230 is provided inside the protective shell 220, and one end of the abutting shell 210 abuts against the outer surface of the optical fiber connection adapter;

[0048] Regarding the connection between the abutting shell 210 and the protective shell 220, the protective shell 220 can slide inside the abutting shell 210, or the abutting shell 210 can slide outside the protective shell 220. The abutting shell 210 is used to abut against the optical fiber connection adapter. During daily use, the abutting shell 210 can be located at one end of the protective shell 220 away from the positioning mechanism 130, that is, to protect the optical fiber carrier shell 111 extending out of the protective shell 220. At the same time, a damping is provided between the protective shell 220 and the abutting shell 210. During installation and use, the abutting shell 210 and the protective shell 220 move together along the first direction towards the optical fiber connection adapter for abutting. When the abutting shell 210 abuts against the optical fiber connection adapter, the protective shell 220 continues to move into the optical fiber connection adapter, and the relative movement occurs between the abutting shell 210 and the protective shell 220. The abutting shell 210 moves above the locking rod 310, and its inner wall abuts against the other end of the locking rod 310 away from the locking block 320, making the locking rod 310 unable to rise, that is, to lock the positioning mechanism 130, so that it cannot be pulled out from the optical fiber carrier shell 111;

[0049] Of course, when not connected to the optical fiber connection adapter, the abutting shell 210 can be directly moved above the locking rod 310 to lock the positioning mechanism 130. This structure is compact, and the operation is simple, reducing production costs and facilitating maintenance.

[0050] In this embodiment, as a preferred solution, a rubber pad 250 is fixedly connected to the end face of the abutting shell 210 facing the fiber optic connection adapter. The rubber pad 250 can assist in sealing the connection between the abutting shell 210 and the fiber optic connection adapter. The fiber optic connection adapter is a well-known prior art and will not be elaborated here.

[0051] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An MPO optical fiber connector, characterized in that: It comprises a core component (100) and a shell component (200); The core component (100) comprises an optical fiber bearing mechanism (110), and an elastic compression ring (120) and a positioning mechanism (130) which are sequentially slidably connected to the optical fiber bearing mechanism (110) along a first direction, the optical fiber bearing mechanism (110) being used for splicing with an optical fiber connection adapter and being connected to an optical fiber via an optical fiber jack provided inside, the optical fiber bearing mechanism (110) at least partially abutting against one end of the elastic compression ring (120), and the end face of the positioning mechanism (130) at least partially abutting against the other end of the elastic compression ring (120); An installation cavity (230) is provided inside the housing component (200); the optical fiber bearing mechanism (110), the elastic compression ring (120) and the positioning mechanism (130) are all slidably connected in the installation cavity (230) along a first direction; the positioning mechanism (130) and the installation cavity (230) are locked by a stopper component (300); The stop assembly (300) comprises a locking rod (310), a locking block (320) and a locking plate (330); one end of the locking block (320) is connected to the end surface of the positioning mechanism (130) facing the elastic compression ring (120) through the locking plate (330), and at least part of the locking block overlaps with the elastic compression ring (120) along the second direction; the locking rod (310) is slidably connected in the housing assembly (200) along the second direction; The optical fiber bearing mechanism (110) comprises an optical fiber bearing shell (111) and a closing cover (112), and the elastic compression ring (120) is sleeved on the surfaces of the optical fiber bearing shell (111) and the closing cover (112); The elastic compression ring (120) comprises an elastic compression sleeve (121) and two fixing rings (122), wherein one of the fixing rings (122) is fixedly connected to one end of the elastic compression sleeve (121) and abuts against the optical fiber bearing mechanism (110), and the other fixing ring (122) is fixedly connected to the other end of the elastic compression sleeve (121) and abuts against the positioning mechanism (130).

2. The MPO optical fiber connector according to claim 1, characterized in that: One end of the locking rod (310) facing the elastic compression ring (120) is arranged in a trapezoidal shape, and two edges of the surface of the locking block (320) facing the locking rod (310) along the first direction are arranged in the form of slopes that match the locking rod (310).

3. The MPO optical fiber connector according to claim 2, characterized in that: One end of the locking block (320) is fixedly connected to one end of the locking plate (330), and the other end of the locking plate (330) is fixedly connected to the end surface of the positioning mechanism (130) facing the elastic compression ring (120).

4. The MPO optical fiber connector according to claim 3, characterized in that: The elastic compression sleeve (121) and the two fixing rings (122) are both sleeved on the outer surface of the optical fiber bearing mechanism (110), wherein the outer surface of one of the fixing rings (122) is sleeved on the outside of the locking plate (330) via a groove, and the elastic compression sleeve (121) and the locking block (320) are at least partially overlapped in projection along the second direction.

5. The MPO optical fiber connector according to claim 3, characterized in that: The optical fiber jack is provided at one end of the optical fiber carrying shell (111); the surface of the optical fiber carrying shell (111) is detachably connected to the closing cover (112) via a groove provided thereon; a clamping groove (113) for clamping the outer skin of the optical fiber is formed between the optical fiber carrying shell (111) and the closing cover (112); the clamping groove (113) is communicated with the optical fiber jack.

6. The MPO optical fiber connector according to claim 5, characterized in that: A limiting block (240) is fixedly connected to the inner wall of the installation cavity (230), a limiting groove (114) is provided on the surface of the optical fiber bearing shell (111) corresponding to the limiting block (240), and the limiting block (240) is slidably connected in the limiting groove (114) along a first direction to assist in positioning the optical fiber bearing shell (111).

7. The MPO optical fiber connector according to claim 5, characterized in that: The positioning mechanism (130) comprises a positioning ring block (131) and a line gathering shell (132); the positioning ring block (131) is sleeved on the surface of the optical fiber bearing shell (111) and the closing cover (112), and is connected to the surface of the optical fiber bearing shell (111) and the closing cover (112) through a gap; one end of the locking plate (330) is fixedly connected to one end of the positioning ring block (131), and the other end of the positioning ring block (131) is fixedly connected to the line gathering shell (132).

8. The MPO optical fiber connector according to claim 7, characterized in that: The positioning mechanism (130) further comprises a three-way shell (133), one end of the three-way shell (133) being connected to the line-bundling shell (132), the projections of the other two ends of the three-way shell (133) along the second direction being mutually overlapped, and the inner walls of the bending transition part between the one end of the three-way shell (133) connected to the line-bundling shell (132) and the other two ends are both arranged in an arc shape.

9. The MPO optical fiber connector according to claim 1, characterized in that: The housing assembly (200) comprises an abutment shell (210) and a protective shell (220); the protective shell (220) is slidably connected in the abutment shell (210); a sliding groove is provided on the outer surface of the protective shell (220); a sliding block is correspondingly fixedly connected to the inner side wall of the abutment shell (210); the installation cavity (230) is provided in the protective shell (220); and one end of the abutment shell (210) abuts against the outer surface of the optical fiber connection adapter.

10. The MPO optical fiber connector according to claim 9, characterized in that: The end surface of the abutment shell (210) facing the optical fiber connection adapter is fixedly connected with a rubber pad (250).

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