A push-pull MPO connector

Abstract

The utility model relates to a kind of push-pull type MPO connector, including ferrule assembly, inner shell, shell, stopper constitutes, handle shell and tail sleeve;The connector is sequentially transmitted by being provided with the cooperation structure of pull force in tail sleeve, handle shell, shell adjacent two, when pulling tail sleeve, pull force is transmitted and drives shell to move, realizes that ferrule assembly pulls out connecting seat;At the same time, the cooperation structure of push force that can be sequentially transmitted is arranged between tail sleeve, handle shell, stopper adjacent two, when pushing tail sleeve, push force is transmitted and drives stopper to move, realizes that ferrule assembly inserts connecting seat.The utility model effectively solves the problem that conventional MPO connector is difficult to plug in high-density connection scene, without holding space limited shell when pulling out, without directly acting on shell or stopper bottom when inserting, avoid the trouble of large-area removal surrounding structure, suitable for narrow space environment.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber communication connection devices, specifically, to a push-pull type MPO connector. Background Technology

[0002] In the field of optical fiber communication, MPO connectors, as key components for achieving high-density optical fiber connections, are widely used in scenarios such as data centers and communication equipment rooms. By integrating the rapid docking function of multiple optical fibers, they effectively meet the needs of modern communication systems for high-capacity and miniaturized connections. With the continuous growth of data transmission volume, the application of MPO connectors in high-density deployment environments is becoming more and more common, and the requirements for their ease of operation and spatial adaptability are also constantly increasing.

[0003] However, conventional MPO connectors (see reference) Figure 11 In practical use, this approach has significant limitations, especially in high-density connection scenarios. Due to the extremely limited operating space between adjacent connectors, it is often impossible to directly grasp the outer shell of the target connector during insertion and removal. When it is necessary to remove the connector, the limited operating space around the target connector makes it difficult for the operator to apply sufficient pulling force, often requiring the removal of multiple surrounding connectors to make room, resulting in low maintenance efficiency. Similarly, when inserting a connector, the target connector's position is obstructed, making it impossible to apply direct pushing force, again necessitating the removal of multiple surrounding connectors to make room.

[0004] The above issues refer to solutions. Utility Model Content

[0005] To address the problem that existing MPO connectors, in high-density deployment environments, have limited operating space between adjacent connectors, making it difficult to apply force when plugging or unplugging, the present invention provides a push-pull type MPO connector.

[0006] The technical solution of this utility model is as follows:

[0007] A push-pull type MPO connector includes a ferrule assembly constituting the connector body, an MPO inner shell, an MPO outer shell, and an MPO stopper, and also includes a handle shell and an MPO tail sleeve constituting the connector housing. The handle shell and the MPO tail sleeve are detachably connected, and the handle shell is slidably connected to the MPO outer shell.

[0008] The MPO tail sleeve, the handle shell, and the MPO outer shell are provided with a mating structure that can sequentially transmit pulling force between adjacent parts, so that when the MPO tail sleeve is pulled, the MPO outer shell is moved to pull out the connector's insert assembly from the connector seat.

[0009] The MPO tail sleeve, the handle shell, and the MPO stopper are provided with a mating structure that can sequentially transmit thrust, so that when the MPO tail sleeve is pushed, the MPO stopper is moved to insert the connector core assembly into the connector seat.

[0010] By adopting the above technical solution, when it is necessary to pull the ferrule assembly of the connector from the connector base, the operator can hold the MPO tail sleeve and apply a pulling force away from the connector base. At this time, the MPO tail sleeve transmits the force to the handle shell through the tension engagement structure between it and the handle shell. The handle shell then drives the MPO shell to move synchronously through the tension engagement structure between it and the MPO outer shell, thereby realizing the pull-out of the ferrule assembly from the connector base. When it is necessary to insert the ferrule assembly into the connector base, the operator holds the MPO tail sleeve and applies a pushing force towards the connector base. The MPO tail sleeve transmits the force to the handle shell through the pushing engagement structure between it and the handle shell. The handle shell then pushes the MPO stop to move through the pushing engagement structure between it and the MPO stopper, thereby driving the ferrule assembly to be inserted into the connector base.

[0011] As a preferred technical solution of this utility model, the opposite side walls of the MPO shell are provided with sliding grooves extending along the axial direction, and the handle shell is provided with corresponding sliding tracks. The handle shell and the MPO shell are slidably connected through the sliding grooves and the sliding tracks, and after sliding into place, the handle shell and the MPO shell are engaged.

[0012] As a preferred embodiment of this utility model, the sequentially transmitting tensile force mating structure between adjacent MPO tail sleeves, handle shells, and MPO outer shells includes:

[0013] The outer side wall of the MPO tail sleeve is provided with a tail sleeve fastening boss, and the handle shell is provided with a corresponding hand shell fastening countersink that cooperates with the tail sleeve fastening boss; the outer side wall of the MPO outer shell is provided with an outer shell fastening boss, and the outer shell fastening boss is located between the two sliding grooves on the same side, and the handle shell is provided with a corresponding hand shell fastening boss that cooperates with the outer shell fastening boss.

[0014] When the MPO tail sleeve is pulled, the mating surfaces of the tail sleeve buckle boss and the hand case buckle countersunk, and the mating surfaces of the hand case buckle boss and the outer shell buckle boss, transmit the pulling force to drive the MPO outer shell to move.

[0015] As a preferred technical solution of this utility model, the side wall of the handle shell is provided with a release hole through the side wall of the handle shell corresponding to the position of the outer shell fastening boss; when it is necessary to disassemble the handle shell and the MPO outer shell, a tool is inserted into the release hole and a force is applied toward the outer shell fastening boss, so that the outer shell fastening boss undergoes elastic deformation and disengages from the handle shell fastening boss, thereby releasing the tension transmission connection between the handle shell and the MPO outer shell.

[0016] As a preferred embodiment of this utility model, the sequentially transmitting thrust between adjacent MPO tail sleeve, handle housing, and MPO stopper includes:

[0017] The front end of the MPO tail sleeve is provided with a forward pushing surface extending radially inward, and the rear end face of the handle shell is provided with a handle shell outer mating surface corresponding to the forward pushing surface; the rear end of the MPO stopper is provided with a forward bearing surface extending radially inward, and the front end face of the handle shell is provided with a handle shell force surface corresponding to the forward bearing surface.

[0018] When the MPO tail sleeve is pushed, the forward pushing surface abuts against the outer mating surface of the handle housing, transmitting the thrust from the MPO tail sleeve to the handle housing. The force-bearing surface of the handle housing abuts against the forward bearing surface, transmitting the thrust from the handle housing to the MPO stopper, thereby driving the MPO stopper to move.

[0019] As a preferred embodiment of this utility model, two of the opposite outer side walls of the MPO inner shell are provided with spring grooves, and side springs are installed in the spring grooves; the other two opposite outer side walls of the MPO inner shell are provided with inner shell fasteners, and the inner side wall of the MPO outer shell is provided with corresponding outer shell fasteners. The MPO outer shell is fitted over the bottom of the MPO inner shell, and the MPO outer shell and the MPO inner shell are fastened together by the inner shell fasteners and the outer shell fasteners.

[0020] The insert assembly is inserted into the top of the MPO inner shell, the MPO stop is inserted from the bottom of the MPO inner shell, and two of the opposite outer walls of the MPO stop are provided with side fasteners, and the MPO inner shell is provided with corresponding side fastener holes, the side fasteners engaging with the side fastener holes.

[0021] Furthermore, an MPO female socket is fitted at the tail end of the ferrule assembly, and a central spring is provided between the MPO female socket and the MPO stopper. One end of the central spring abuts against the MPO female socket, and the other end abuts against the MPO stopper.

[0022] As a preferred technical solution of this utility model, the bottom of the handle shell is provided with reinforcing posts on two opposite sides; the port of the MPO tail sleeve is provided with a notch groove, which is used to avoid the reinforcing posts and also to increase the elasticity of the port of the MPO tail sleeve. The bottom of the notch groove is provided with a plug hole; when the handle shell is connected to the MPO tail sleeve, the reinforcing posts are inserted into the plug hole.

[0023] As a preferred technical solution of this utility model, the bottom outer periphery of the MPO tail sleeve is provided with a number of raised dots, which are used to increase the gripping friction; the bottom outer periphery of the MPO tail sleeve is provided with a number of gaps, and bending force ribs are provided in the gaps, which are used to increase the bending stiffness of the tail sleeve.

[0024] As a preferred technical solution of this utility model, the cable outlet of the MPO tail sleeve is provided with a double ring platform at one end. The double ring platform includes an outer first ring platform and an inner second ring platform. The outer diameter of the first ring platform is larger than the outer diameter of the second ring platform, and there is a transition slope between the two ring platforms.

[0025] As a preferred embodiment of this utility model, it further includes a metal pressure ring and a metal bundle ring for fixing the optical cable; the metal pressure ring is sleeved on the outer periphery of the optical cable between the MPO inner shell and the MPO tail sleeve, and the front end of the metal pressure ring abuts against the rear end of the MPO inner shell to compress the aramid layer of the optical cable; the metal bundle ring is sleeved on the outer periphery of the optical cable on the side of the metal pressure ring away from the MPO inner shell, and the front end of the metal bundle ring abuts against the rear end of the metal pressure ring to compress the outer sheath of the optical cable.

[0026] The advantages of this utility model based on the above solution are as follows:

[0027] This utility model effectively solves the problem of difficult insertion and removal of conventional MPO connectors in high-density connection scenarios by adding a handle shell and an MPO tail sleeve to the MPO connector and utilizing the force transmission and cooperation structure between adjacent components.

[0028] Specifically, when the connector needs to be pulled out, simply hold the MPO tail sleeve. The pulling force is then transmitted sequentially through the mating structure between the tail sleeve and the handle shell, and between the handle shell and the MPO outer shell, causing the MPO outer shell to move and allowing the ferrule assembly to be pulled out from the connector. This eliminates the need to directly hold the space-constrained MPO outer shell, avoiding the hassle of dismantling large areas of the surrounding structure due to inaccessibility. When the connector needs to be inserted, the thrust generated by pushing the MPO tail sleeve is transmitted sequentially through the mating structure between the MPO tail sleeve and the handle shell, and between the handle shell and the MPO stop, causing the MPO stop to move and allowing the ferrule assembly to be smoothly inserted into the connector. The operation does not require direct application of force to the bottom of the MPO outer shell or the MPO stop, making it suitable for confined spaces as well.

[0029] In addition, the detachable connection design between the handle shell and the MPO tail sleeve, as well as the sliding connection structure between the handle shell and the MPO outer shell, not only ensure the stability and reliability of force transmission, but also provide convenience for the disassembly and maintenance of the connector, improve the practicality and flexibility of the overall structure, significantly improve the operating efficiency of the MPO connector in high-density scenarios, and reduce maintenance costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is an exploded view of the structure of this utility model;

[0032] Figure 3 This is an exploded view of the main body of the connector in this utility model;

[0033] Figure 4 This is an exploded view of the connecting head housing in this utility model;

[0034] Figure 5 This is a schematic diagram of the handle housing structure;

[0035] Figure 6 This is a schematic diagram of the MPO tail sleeve structure;

[0036] Figure 7 This is an assembly diagram showing the connection between the head cover and the MPO housing;

[0037] Figure 8 This is a schematic diagram of the MPO shell structure;

[0038] Figure 9 This is a longitudinal cross-sectional view of the narrower side of the MPO connector of this utility model;

[0039] Figure 10 This is a longitudinal cross-sectional view of the wider side of the MPO connector of this utility model;

[0040] Figure 11 This is a schematic diagram of the existing MPO connector.

[0041] In the diagram,

[0042] 1. Handle housing; 11. Sliding rail; 12. Handle housing buckle countersunk; 13. Handle housing buckle boss; 14. Unfastening hole; 15. Handle housing outer mating surface; 16. Handle housing force-bearing surface; 17. Reinforcing post;

[0043] 2. MPO tail sleeve; 21. Tail sleeve buckle boss; 22. Forward thrust surface; 23. Insertion hole; 24. Boss dot; 25. Bending force rib; 26. Double ring platform;

[0044] 3. MPO inner shell; 31. Spring groove; 32. Inner shell fastener; 33. Side fastener hole;

[0045] 4. MPO housing; 41. Sliding groove; 42. Housing locking boss; 43. Housing locking mechanism;

[0046] 5. MPO stopper; 51. Forward bearing surface; 52. Side fastener;

[0047] 6. Ferrule assembly;

[0048] 7. MPO female connector;

[0049] 8. Central spring;

[0050] 9. Dust cap;

[0051] 10. Metal pressure ring; 11. Metal bundle ring; 12. Optical cable. Detailed Implementation

[0052] To better understand the purpose, technical solution, and technical effects of this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will provide further explanation. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need further definition and explanation in subsequent drawings. It is also stated that the embodiments described below are only for explaining this utility model and are not intended to limit it.

[0053] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intermediate component.

[0054] The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed when in use, or the orientation or positional relationship in which a person skilled in the art would normally understand it, or the orientation or positional relationship in which the product is usually placed when in use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is not intended to 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 this application.

[0055] The terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of technical features. “Multiple” and “several” mean two or more, unless otherwise explicitly specified.

[0056] like Figure 1 , Figure 2 , Figure 9 , Figure 10 As shown, a push-pull MPO connector includes:

[0057] The connector body includes a ferrule assembly 6, an MPO inner shell 3, an MPO outer shell 4, and an MPO stopper 5;

[0058] The connecting head cover includes a handle cover 1 and an MPO tail cover 2, which are detachably connected.

[0059] Compared to conventional MPO connectors, this invention adds a connector housing, and the MPO housing 4 is connected to the handle housing 1 so that the connector housing is fitted onto the bottom of the connector body.

[0060] In this utility model, the MPO tail sleeve 2, the handle shell 1, and the MPO outer shell are provided with a cooperating structure that can sequentially transmit pulling force between adjacent parts, so that when the MPO tail sleeve 2 is pulled, the MPO outer shell moves to pull out the connector core assembly 6 from the connector seat; the MPO tail sleeve 2, the handle shell 1, and the MPO stopper 5 are provided with a cooperating structure that can sequentially transmit pushing force between adjacent parts, so that when the MPO tail sleeve 2 is pushed, the MPO stopper 5 moves to insert the connector core assembly 6 into the connector seat.

[0061] This invention, by adding a connector sleeve, constructs an efficient force transmission path, solving the problem of limited operation of conventional MPO connectors in high-density scenarios. Regarding tensile force transmission, the MPO tail sleeve 2 and the handle shell 1 form a first-level tensile force engagement through a snap-fit ​​structure (such as the tail sleeve snap-fit ​​boss 21 and the handle shell 1 snap-fit ​​countersunk). The handle shell 1 and the MPO outer shell form a second-level tensile force engagement through a snap-fit ​​structure (such as the outer shell snap-fit ​​boss 42 and the handle shell snap-fit ​​boss 13). When the MPO tail sleeve 2 is pulled, the tensile force is sequentially transmitted through the tail sleeve to the handle shell 1, then from the handle shell 1 to the MPO outer shell, and finally through the MPO outer shell, pulling the MPO connector away from the connector seat, thus achieving the pull-out action.

[0062] In terms of thrust transmission, the forward thrust surface 22 of the MPO tail sleeve 2 and the outer mating surface of the handle shell 1 form the first-level thrust engagement, and the force-acting surface of the handle shell 1 and the rear end face of the MPO stopper 5 form the second-level thrust engagement. When the MPO tail sleeve 2 is pushed, the thrust is transmitted to the handle shell 1 through the tail sleeve, and then directly acts on the MPO stopper 5 through the handle shell 1. Finally, the MPO connector is pushed forward through the MPO stopper 5 to complete the docking with the connector seat.

[0063] It can be seen that, on the one hand, by connecting the head sleeve shell, the operation point is transferred to the MPO ferrule 2 which is easy to hold. There is no need to directly contact the MPO shell or stopper with limited space. Only by holding the ferrule can the plugging and unplugging be completed, completely avoiding the trouble of removing the surrounding connectors in high-density scenarios and greatly improving the operation efficiency. On the other hand, the hierarchical transmission structure of the pulling force and the pushing force ensures the stability and accuracy of the force transmission, reduces the risk of damage to the connectors and optical fibers during the operation process. At the same time, the detachable connection design of the handle shell 1 and the MPO ferrule 2 also provides convenience for later maintenance and component replacement, taking into account both practicality and reliability.

[0064] As Figure 4 , Figure 5 and Figure 7 shown, in the present utility model, sliding grooves 41 extending axially are provided on both opposite side walls of the MPO shell. The handle shell 1 is correspondingly provided with corresponding sliding tracks 11. The handle shell 1 and the MPO shell are slidably connected through the sliding grooves 41 and the sliding tracks 11, and after sliding in place, the handle shell 1 and the MPO shell are snap-connected. Specifically, on two opposite side walls of the MPO shell (the side walls provided with the mating structures for transmitting the pulling force with the handle shell 1), symmetric sliding grooves 41 are provided at the edge of each side wall, and the cross-section of the sliding groove 41 is C-shaped. And on the side wall of the handle shell 1 at the corresponding position, a sliding track 11 is provided. The sliding track 11 is formed by folding and extending the side edge of the side wall downward and outward, so that the cross-section of the side wall of the handle shell 1 with the track is "L"-shaped. The cooperation of the C-shaped sliding groove 41 and the "L"-shaped sliding track 11 not only provides accurate axial sliding guidance, but also forms lateral limitation through the mutual nesting of the structures, effectively preventing the handle shell 1 from shifting or shaking during the sliding process and ensuring the stability of the force transmission path. Moreover, the sliding track 11 of the handle shell 1 adopts the "L"-shaped structure formed by folding and extending the side wall, which significantly improves the anti-deformation ability of the track compared with the traditional flat track.

[0065] When assembling the handle shell 1 and the MPO shell, the operator aligns the protruding sliding track 11 on the handle shell 1 with the C-shaped sliding groove 41 of the MPO shell 4 and pushes it in along the axial direction. When the handle shell 1 slides to the predetermined position, the shell buckle boss 42 and the hand shell buckle boss 13 are snap-connected through elastic deformation, locking the handle shell 1 and the MPO shell to each other.

[0066] The two side walls of the handle shell 1 with tracks extend along the axial direction, facilitating the sliding connection with the outer side wall of the MPO shell 4. The surface of the side wall of the handle shell 1 with the track is printed with the word "PULL" and a triangular indicating arrow for indicating the pulling direction. On the blank surface on the same side of the side wall of the handle shell 1 with the track, it can be used to set the company logo.

[0067] As Figure 4 ,6 As shown in FIGS. 7 and 9, in the present utility model, the mating structure capable of sequentially transmitting the pulling force between two adjacent ones of the MPO ferrule 2, the handle housing 1, and the MPO housing includes:

[0068] On the outer side wall of the end of the MPO ferrule 2, there is a ferrule buckle position boss 21, and the handle housing 1 correspondingly has a handle housing buckle position sunk table 12 that cooperates with the ferrule buckle position boss 21. Specifically, the outer side wall of the port of the MPO ferrule 2 protrudes radially outward to form the ferrule buckle position boss 21. Notch grooves are provided on both short side edges of the port of the MPO ferrule 2, so that the ferrule buckle position boss 21 at the port of the MPO ferrule 2 has shrinkage elasticity. When the MPO ferrule 2 is inserted through the opening at the bottom of the handle housing 1, the caliber of the ferrule buckle position boss 21 is reduced and it passes through to the position of the handle housing buckle position sunk table 12, and after reaching the position, it resumes its original state and forms a buckle with the inner side wall of the handle housing buckle position sunk table 12, realizing the axial limit of the MPO ferrule 2 and the handle housing 1; the inner side wall of the handle housing 1 protrudes radially inward to form the handle housing buckle position sunk table 12, which can be in mutual abutment with the end face of the ferrule buckle position boss 21, thereby forming a rigid mating surface during the transmission of the pulling force.

[0069] On the outer side wall of the MPO housing, there is a housing buckle position boss 42, and the housing buckle position boss 42 is located between two of the sliding grooves 41 on the same side. The handle housing 1 correspondingly has a handle housing buckle position boss 13 that cooperates with the housing buckle position boss 42. Specifically, there is an elastic plate between the two side walls of the MPO housing provided with the sliding grooves 41. The outer side of the elastic plate is provided with an outwardly protruding housing buckle position boss 42, and the middle of the inner wall surface of the side wall of the handle housing 1 with the track is provided with a "convex"-shaped handle housing buckle position boss 13. The elastic plate has a certain elasticity, and the facing surfaces of the housing buckle position boss 42 and the handle housing buckle position boss 13 have inclined guiding slopes. When the handle housing 1 and the MPO housing slide, the guiding slopes of the housing buckle position boss 42 and the handle housing buckle position boss 13 come into contact with each other and produce extrusion, and the elastic plate can drive the housing buckle position boss 42 to elastically deform inward to avoid the blockage of the handle housing buckle position boss 13; when sliding to the buckling position, the elastic plate resumes deformation, and the rear end face of the housing buckle position boss 42 is in mutual abutment with the front end face of the handle housing buckle position boss 13, forming an axially limited buckle structure.

[0070] On the outer side of the elastic plate beside the housing buckle position boss 42, there is also a buckle position card slot. When the handle housing 1 and the MPO housing slide to the place, the handle housing buckle position boss 13 of the handle housing 1 is correspondingly embedded in the buckle position card slot, enhancing the overall stability of the buckling structure. At this time, the handle housing buckle position boss 13 and the housing buckle position boss 42 form a two-way limit cooperation - the rear end face of the housing buckle position boss 42 is in abutment with the front end face of the handle housing buckle position boss 13, restricting the displacement of the two from moving away from each other along the axis, and the inner side wall of the buckle position card slot is in contact with the side surface of the handle housing buckle position boss 13, restricting the relative sway of the two along the radial direction.

[0071] When the MPO tail sleeve is pulled, the mating surfaces of the tail sleeve locking boss 21 and the hand housing locking countersunk 12, and the mating surfaces of the hand housing locking boss 13 and the outer shell locking boss 42, transmit the pulling force to move the MPO outer shell. Specifically, the transmission of pulling force is achieved sequentially through two levels of rigid mating surfaces, as follows:

[0072] First, when the MPO tail sleeve 2 is pulled, the tail sleeve locking boss 21 at its end forms an axial limiting engagement with the handle housing 1's handle housing locking countersunk 12. The end face of the tail sleeve locking boss 21 tightly abuts against the inner side wall of the handle housing locking countersunk 12 (i.e., the mating surface of the two). At this time, the pulling force is directly transmitted from the MPO tail sleeve 2 to the handle housing 1 through this mating surface, causing the handle housing 1 to be stressed synchronously with the tail sleeve. Next, since the handle housing 1 and the MPO outer shell are already engaged, when the handle housing 1 is stressed, the front end face of the handle housing locking boss 13 will generate a rearward pulling force on the rear end face of the MPO outer shell locking boss 42 (i.e., the mating surface of the two). This force is transmitted to the MPO outer shell through rigid contact. Throughout the process, the two mating surfaces (between the tail sleeve and handle housing 1, and between handle housing 1 and MPO housing) are in rigid contact, ensuring that the pulling force is transmitted sequentially without loss. Simultaneously, the engagement of the sliding groove 41 and the sliding rail 11 restricts the radial offset of each component, ensuring that the pulling force always acts axially. Ultimately, this drives the MPO housing to move stably, realizing the pull-out action of the connector insert assembly 6. Therefore, the staged transmission structure of this solution not only ensures effective force transmission but also prevents loosening or slippage during the transmission process through a bidirectional limiting design, ensuring operational stability.

[0073] like Figure 7 As shown, in a preferred embodiment, the side wall of the handle shell 1 is provided with a release hole 14 that penetrates the side wall of the handle shell 1 at the position corresponding to the outer shell fastening boss 42. When making jumpers or repairing connectors, it is necessary to disassemble the handle shell 1 from the MPO outer shell. The operator inserts a slender tool (such as tweezers or a special release needle) through the release hole 14, and the tip of the tool directly acts on the outer surface of the outer shell fastening boss 42. Since the outer shell fastening boss 42 is located on an elastic plate, the pressure applied by the tool forces the elastic plate to bend and deform inward, causing the outer shell fastening boss 42 to retract towards the central axis of the MPO outer shell. When the rear end face of the outer shell fastening boss 42 disengages from the front end face of the handle shell fastening boss 13, the axial limit of both is released, and the handle shell fastening boss 13 disengages from the fastening slot. At this time, the operator can push the handle shell 1 along the sliding groove 41 to separate it from the MPO outer shell, completing the disassembly process.

[0074] like Figure 3 , 4As shown in Figures 5 and 10, in this utility model, the sequentially transmitting thrust between adjacent MPO tail sleeve 2, handle shell 1, and MPO stopper 5 includes:

[0075] The front end of the MPO tail sleeve 2 is provided with a forward thrust surface 22 extending radially inward, and the rear end face of the handle shell 1 is provided with a handle shell outer mating surface 15 corresponding to the forward thrust surface 22. Specifically, the forward thrust surface 22 is a stepped surface that surrounds the MPO tail sleeve 2, and the handle shell outer mating surface 15 is an annular surface with an opening at the bottom of the handle shell 1. Both the forward thrust surface 22 and the handle shell outer mating surface 15 are flat surfaces. When the two come into contact, they form a full-area fit, ensuring that the thrust is uniformly transmitted along the axial direction and avoiding structural deformation caused by local stress concentration.

[0076] The rear end of the MPO stopper 5 is provided with a radially inwardly extending forward bearing surface 51, and the front end of the handle housing 1 is provided with a handle housing force surface 16 corresponding to the forward bearing surface 51. Specifically, the forward bearing surface 51 is the bottom open annular surface of the MPO stopper 5, and the handle housing force surface 16 is the top surface of the opening between the two track-lined sidewalls of the handle housing 1. Both the top surface of the opening and the bottom open annular surface (forward bearing surface 51) of the MPO stopper 5 are flat and parallel planes. When the two come into contact, the thrust can be stably transmitted through surface contact, preventing the stopper from tilting or jamming due to the offset of the force point.

[0077] When the MPO tail sleeve is pushed, the full-area contact between the forward thrust surface 22 and the outer mating surface 15 of the handle shell ensures that the thrust is evenly transmitted from the tail sleeve to the handle shell 1, avoiding damage to components caused by excessive local force. At the same time, the parallel contact between the handle shell force surface 16 and the forward bearing surface 51 ensures that the thrust is accurately applied to the MPO stopper 5 along the axial direction, driving the stopper and the insert assembly 6 to move forward smoothly, ensuring accurate docking between the insert assembly 6 and the connector. Especially in high-density connection scenarios, this surface contact force transmission method can effectively reduce docking deviations caused by limited operating space, improving the reliability and efficiency of the insertion operation.

[0078] like Figure 3 , 7As shown in Figure 8, in this utility model, two opposite outer walls of the MPO inner shell 3 are provided with spring grooves 31, and side springs are installed in the spring grooves 31. The other two opposite outer walls of the MPO inner shell 3 are provided with inner shell fasteners 32, and the inner wall of the MPO outer shell 4 is correspondingly provided with outer shell fasteners 43. The MPO outer shell 4 is fitted over the bottom of the MPO inner shell 3 and is fastened to the MPO inner shell 3 through the inner shell fasteners 32 and the outer shell fasteners 43. Specifically, the left and right outer walls of the MPO inner shell 3 are provided with spring grooves 31, and the front and rear outer walls are provided with inner shell fasteners 32. Correspondingly, the front and rear inner walls of the MPO outer shell 4 are provided with outer shell fasteners 43. The inner shell fasteners 32 are protruding structures on the surface of the outer wall of the MPO inner shell 3, and the outer shell fasteners 43 are protruding structures on the surface of the inner wall of the MPO outer shell 4. In an optional embodiment, the inner shell fastener 32 is a strip-shaped protrusion with a guide surface on its front end and a vertical surface on its rear end; the outer shell fastener 43 is a T-shaped protrusion with a guide surface on its rear end and a vertical surface on its front end. When the MPO inner shell is inserted into the bottom of the MPO outer shell and pushed axially, the front guide surface of the inner shell fastener 32 (strip-shaped protrusion) and the rear guide surface of the outer shell fastener 43 (T-shaped protrusion) come into contact with each other and slide and compress, guiding the two smoothly to avoid each other through the tilt angle of the guide surface until the MPO inner shell is pushed to the fastening position. At this time, the vertical rear end surface of the strip-shaped protrusion and the vertical front end surface of the T-shaped protrusion abut against each other, forming a rigid fastening with axial limiting.

[0079] The side spring installed in the spring groove 31 of the MPO inner shell 3 has half of its length inside the groove and half of its length outside the groove, elastically abutting against the inner wall of the MPO outer shell, so that the side spring is in a slightly compressed state. The elastic force of the side spring forces the vertical front end face of the outer shell fastener 43 to fit tightly against the vertical rear end face of the inner shell fastener 32, further strengthening the abutting force between the two and effectively preventing the fastening structure from loosening in long-term use or in a vibrating environment.

[0080] like Figure 3 As shown, in this utility model, the insert assembly 6 is inserted into the top of the MPO inner shell 3 and protrudes from the MPO outer shell 4 so that the insert assembly 6 can be connected to the connecting seat. The MPO stopper is inserted from the bottom of the MPO inner shell 3, and two of the opposite outer walls of the MPO stopper are provided with side fasteners 52. The MPO inner shell 3 is provided with corresponding side fastener holes 33, and the side fasteners 52 and the side fastener holes 33 are engaged. Specifically, the side fasteners 52 are raised trapezoidal blocks on the left and right side wall surfaces of the MPO stopper, with the inclined guide surfaces facing the MPO inner shell 3. The side fastener holes 33 are openings on the left and right side walls of the MPO inner shell 3, which are adapted to the raised trapezoidal blocks. When the MPO stopper 5 is inserted into place from the bottom of the MPO inner shell 3, the trapezoidal blocks are embedded in the side fastener holes 33, forming an axial limit, ensuring that the MPO stopper 5 is stably connected to the MPO inner shell.

[0081] The top portion of the MPO inner shell 3 protruding from the MPO outer shell 4 is also equipped with a dust cap 9. The dust cap 9 is fastened to the top of the MPO inner shell 3 and covers the entire ferrule assembly 6, providing dust protection for the ferrule assembly 6.

[0082] Additionally, an MPO female seat 7 is fitted onto the tail end of the ferrule assembly 6. A central spring 8 is provided between the MPO female seat 7 and the MPO stopper. One end of the central spring 8 abuts against the MPO female seat 7, and the other end abuts against the MPO stopper. When the MPO stopper 5 is inserted into the bottom of the MPO inner shell, the MPO stopper 5 approaches the ferrule assembly 6, compressing the central spring 8.

[0083] like Figure 4 , 5 As shown, in a preferred embodiment, reinforcing posts 17 are provided on opposite sides of the bottom of the handle housing 1; a notch is provided on the corresponding side of the port of the MPO tail sleeve, the notch being used to avoid the reinforcing posts 17 and to increase the elasticity of the port of the MPO tail sleeve, and a insertion hole 23 is provided at the bottom of the notch; when the handle housing 1 is connected to the MPO tail sleeve, the reinforcing post 17 is inserted into the insertion hole 23. Specifically, the reinforcing post 17 extends vertically downward along the bottom sidewall of the handle housing 1, and its cross-section is adapted to the shape of the insertion hole 23 (such as circular or square), ensuring that the two fit tightly after insertion; the notch notch not only provides installation space for the reinforcing post 17, avoiding structural interference during assembly, but also enhances the shrinkage elasticity of the tail sleeve fastening boss 21 through the partial hollow design of the port sidewall, facilitating the fastening assembly of the tail sleeve and the handle housing 1. When the reinforcing post 17 is inserted into the insertion hole 23, it can restrict the relative shaking of the handle shell 1 and the MPO tail sleeve 2 in the axial and radial directions, and cooperate with the fastening structure of the tail sleeve fastening boss 21 and the handle shell fastening sink 12.

[0084] like Figure 4 , 6 As shown, in a preferred embodiment, the bottom outer periphery of the MPO tail sleeve is provided with a plurality of raised dots 24. The raised dots 24 are evenly distributed along the circumferential direction of the bottom of the tail sleeve. The height and spacing of the raised dots are optimized to significantly improve the gripping friction between the hand and the tail sleeve by increasing the roughness of the contact surface when the operator holds the tail sleeve. This avoids unstable force due to hand slippage during insertion and removal operations, and ensures reliable grip even when the hands are contaminated with oil or sweat.

[0085] like Figure 7As shown, the bottom outer periphery of the MPO tail sleeve is provided with multiple gaps, and bending force ribs 25 are provided in the gaps; the gaps provide a certain flexible deformation space for the tail sleeve to adapt to the angle adjustment when the optical cable 12 is bent, and the bending force ribs 25 provided in the gaps enhance the structural toughness of the tail sleeve, limiting excessive deformation to protect the internal optical cable 12.

[0086] like Figure 6 As shown, in a preferred embodiment, the cable exit hole of the MPO tail sleeve is provided with a double-ring platform 26. The double-ring platform 26 includes an outer first ring platform and an inner second ring platform. The outer diameter of the first ring platform is larger than the outer diameter of the second ring platform, and there is a transition slope between the two ring platforms. This structural design forms a stepped outer diameter change through the double-ring platform 26 and achieves a smooth transition using the transition slope. It can effectively disperse the stress concentration at the bend of the optical cable 12, provide progressive support for the optical cable 12, thereby better protecting the force at the bend of the optical cable 12 and achieving a better stress transition effect.

[0087] like Figure 2 and Figure 3 As shown, in this invention, the connector is further equipped with a metal pressure ring 10 and a metal clamping ring 11 for fixing the optical cable 12. Specifically, the metal pressure ring 10 is sleeved on the outer periphery of the optical cable 12 between the MPO inner shell and the MPO tail sleeve 2, and the front end of the metal pressure ring 10 abuts against the rear end of the MPO inner shell to compress the aramid layer of the optical cable 12; the metal clamping ring 11 is sleeved on the outer periphery of the optical cable 12 on the side of the metal pressure ring 10 away from the MPO inner shell, and the inner wall of the metal pressure ring 10 is distributed with fine serrated protrusions. When tightened, the protrusions can penetrate into the aramid layer of the optical cable 12, firmly compressing the high tensile strength aramid fibers, effectively dispersing the axial tension during insertion and extraction operations, and preventing the aramid layer from slipping or breaking. The front end of the metal clamping ring 11 abuts against the rear end of the metal pressure ring 10 to compress the outer sheath of the optical cable 12.

[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A push-pull type MPO connector, comprising a ferrule assembly, an MPO inner shell, an MPO outer shell, and an MPO stopper constituting the connector body, characterized in that, It also includes a handle shell and an MPO tail sleeve that constitute the connecting head sleeve shell, the handle shell and the MPO tail sleeve being detachably connected, and the handle shell being connected to the MPO outer shell; The MPO tail sleeve, the handle shell, and the MPO outer shell are provided with a mating structure that can sequentially transmit pulling force between adjacent parts, so that when the MPO tail sleeve is pulled, the MPO outer shell is moved to pull out the connector's insert assembly from the connector seat. The MPO tail sleeve, the handle shell, and the MPO stopper are provided with a mating structure that can sequentially transmit thrust, so that when the MPO tail sleeve is pushed, the MPO stopper is moved to insert the connector core assembly into the connector seat.

2. The push-pull type MPO connector according to claim 1, characterized in that, The MPO housing has axially extending sliding grooves on both opposite side walls, and the handle housing has corresponding sliding tracks. The handle housing and the MPO housing are slidably connected through the sliding grooves and the sliding tracks, and the handle housing engages with the MPO housing after sliding into place.

3. A push-pull MPO connector according to claim 2, characterized in that, The sequentially connecting structure between adjacent MPO tail sleeves, handle shells, and MPO outer shells, capable of transmitting tensile force, includes: The outer side wall of the end of the MPO tail sleeve is provided with a tail sleeve buckle protrusion, and the handle shell is provided with a corresponding handle shell buckle recess that cooperates with the tail sleeve buckle protrusion. The outer side wall of the MPO housing is provided with a housing fastening boss, and the housing fastening boss is located between the two sliding grooves on the same side. The handle housing is provided with a corresponding hand housing fastening boss that cooperates with the housing fastening boss. When the MPO tail sleeve is pulled, the mating surfaces of the tail sleeve buckle boss and the hand case buckle countersunk, and the mating surfaces of the hand case buckle boss and the outer shell buckle boss, transmit the pulling force to drive the MPO outer shell to move.

4. A push-pull MPO connector according to claim 3, characterized in that, The side wall of the handle shell is provided with an unlocking hole that passes through the side wall of the handle shell, corresponding to the position of the buckle boss of the outer shell. When it is necessary to disassemble the handle housing and the MPO housing, a tool is inserted into the release hole and a force is applied toward the housing fastening boss, causing the housing fastening boss to elastically deform and disengage from the handle housing fastening boss, thereby releasing the tension transmission connection between the handle housing and the MPO housing.

5. A push-pull MPO connector according to claim 1, characterized in that, The sequentially transmitting thrust mechanism between adjacent MPO tail sleeves, handle housings, and MPO stoppers includes: The front end of the MPO tail sleeve is provided with a forward pushing surface extending radially inward, and the rear end face of the handle shell is provided with a handle shell outer mating surface corresponding to the forward pushing surface. The rear end of the MPO stopper is provided with a forward bearing surface extending radially inward, and the front end of the handle shell is provided with a handle shell force surface corresponding to the forward bearing surface. When the MPO tail sleeve is pushed, the forward pushing surface abuts against the outer mating surface of the handle housing, transmitting the thrust from the MPO tail sleeve to the handle housing. The force-bearing surface of the handle housing abuts against the forward bearing surface, transmitting the thrust from the handle housing to the MPO stopper, thereby driving the MPO stopper to move.

6. A push-pull MPO connector according to any one of claims 1 to 5, characterized in that, Two of the opposite outer walls of the MPO inner shell are provided with spring grooves, and side springs are installed in the spring grooves. The MPO inner shell has two other opposite outer side walls with inner shell fasteners, and the inner side wall of the MPO outer shell has corresponding outer shell fasteners. The MPO outer shell is fitted over the bottom of the MPO inner shell, and the MPO outer shell and the MPO inner shell are fastened together by the inner shell fasteners and the outer shell fasteners. The insert assembly is inserted into the top of the MPO inner shell, the MPO stop is inserted from the bottom of the MPO inner shell, and two of the opposite outer walls of the MPO stop are provided with side fasteners, and the MPO inner shell is provided with corresponding side fastener holes, the side fasteners engaging with the side fastener holes.

7. A push-pull MPO connector according to claim 6, characterized in that, An MPO female socket is fitted at the tail end of the ferrule assembly. A central spring is provided between the MPO female socket and the MPO stopper. One end of the central spring abuts against the MPO female socket, and the other end abuts against the MPO stopper.

8. A push-pull MPO connector according to any one of claims 1 to 5, characterized in that, The bottom of the handle shell has reinforcing posts on opposite sides; the port of the MPO tail sleeve has a notch groove on the corresponding side, the notch groove is used to avoid the reinforcing posts and also to increase the elasticity of the port of the MPO tail sleeve, and the bottom of the notch groove has a plug hole; when the handle shell is connected to the MPO tail sleeve, the reinforcing post is inserted into the plug hole.

9. A push-pull MPO connector according to claim 1, characterized in that, The bottom outer periphery of the MPO tail sleeve is provided with several raised dots, which are used to increase grip friction. The bottom outer periphery of the MPO tail sleeve is provided with multiple gaps, and bending force ribs are provided in the gaps to increase the bending stiffness of the tail sleeve.

10. A push-pull MPO connector according to claim 1, characterized in that, The MPO tail sleeve has a double ring platform at one end of the cable outlet. The double ring platform includes an outer first ring platform and an inner second ring platform. The outer diameter of the first ring platform is larger than the outer diameter of the second ring platform, and there is a transition slope between the two ring platforms.

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