MPO connector

Abstract

The embodiment of the utility model provides an MPO connector which comprises an inner shell, an outer shell which can be movably sleeved outside the inner shell along the length direction of the MPO connector, a tail sheath which can be movably connected to the tail end part of the inner shell along the length direction of the MPO connector, and a linkage piece which is used for correspondingly connecting the tail sheath and the outer shell, the two opposite side walls of the front end of the tail protective sleeve protrude to form stopping bosses respectively, through holes are formed in the stopping bosses, and the linkage piece comprises a connecting rod base which is attached to the outer side wall of the front end of the tail protective sleeve and is stopped and limited by the stopping bosses and a plurality of connecting rods which are integrally formed in a protruding mode from the connecting rod base to one side of the stopping bosses. The connecting rods penetrate through the corresponding through holes and are connected with the outer shell, and when the tail sheath moves in the direction away from the outer shell relative to the inner shell, the stopping bosses abut against the connecting rod bases so that the connecting rods can drive the outer shell to move synchronously. The embodiment of the utility model can be more convenient to assemble.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of fiber optic connectors, in particular to an MPO connector. Background Art

[0002] There is a conventional MPO connector mainly including an inner shell, an outer shell movably sleeved outside the inner shell along the length direction of the MPO fiber optic connector, a tail sheath movably connected to the tail end of the inner shell along the length direction of the MPO fiber optic connector, and a connecting rod with two ends respectively correspondingly connected to the outer shell and the tail sheath. When the tail sheath moves away from the outer shell relative to the inner shell, the outer shell is driven to move synchronously through the connecting rod, so that the MPO fiber optic connector can be conveniently detached from the butt-jointed adapter in an application environment with a high installation density. Among them, to ensure the smooth movement of the tail sheath driving the outer shell, multiple connecting rods are usually symmetrically arranged on both sides of the outer shell and the tail sheath. However, since each connecting rod is independently arranged, during assembly, each connecting rod needs to be assembled one by one separately, resulting in low assembly efficiency. And during the disassembly operation, when the outer shell is driven to move by the tail sheath, it is difficult to ensure the synchronism of each connecting rod, which easily causes the outer shell to be deflected due to the uneven pulling force received by each of them, and further causes contact friction between the outer shell and the inner shell to form a large frictional resistance, affecting the smoothness of the movement of the outer shell. Summary of the Utility Model

[0003] The technical problem to be solved by the embodiment of the utility model is to provide an MPO connector, which is more convenient for assembly and disassembly operations.

[0004] To solve the above technical problem, the embodiment of the utility model provides the following technical solution: an MPO connector, including an inner shell, an outer shell movably sleeved outside the inner shell along the length direction of the MPO connector, a tail sheath movably connected to the tail end of the inner shell along the length direction of the MPO connector, and a linkage member for correspondingly connecting the tail sheath and the outer shell. A stop boss is formed by protruding on the front side wall of the tail sheath, and a through hole is opened on the stop boss. The linkage member includes a connecting rod seat arranged in a manner of fitting the outer side wall of the front end of the tail sheath and blocked and limited by the stop boss, and a plurality of connecting rods integrally protruding from one side of the connecting rod seat towards the stop boss. Each of the connecting rods respectively passes through the corresponding through holes on the tail sheath and is connected to the outer shell. When the tail sheath moves away from the outer shell relative to the inner shell, the connecting rod seat is pushed by the stop boss to drive the connecting rods to drive the outer shell to move synchronously.

[0005] Further, on the opposite two side walls at the front end of the tail sheath, there are symmetrically protruding portions respectively forming one of the stop bosses, and at the opposite two ends of each stop boss, there is respectively provided one through hole. For each of the stop bosses, the MPO connector is provided with one linkage member. At the two ends of the link seat of each linkage member, there is respectively provided one link. The two links of the same linkage member respectively pass through the two through holes on the same stop boss in a one-to-one correspondence.

[0006] Further, on the opposite two side walls at the front end of the tail sheath, there are symmetrically protruding portions respectively forming one of the stop bosses, and at the opposite two ends of each stop boss, there is respectively provided one through hole. The link seat is in a ring shape and is correspondingly sleeved on the tail sheath, and for each through hole, the link seat is provided with one link.

[0007] Further, the inner side wall of the link seat is adapted to the outer wall contour of the front end of the tail sheath.

[0008] Further, on the rear end face of the outer shell, there is provided a limit hole coaxially arranged with the through hole. The front end of the link radially protrudes to form a stop portion. The link passes through the limit hole from the rear to the front and is in abutting fit with the outer peripheral edge of the front end hole opening of the limit hole by the stop portion to prevent the link from disengaging from the limit hole. On the front end face of the stop portion, there is further provided a guiding arc surface for guiding the elastic deformation of the stop portion and / or the hole wall of the limit hole to allow the stop portion to pass through the limit hole.

[0009] Further, on the outer side wall facing outwards in the thickness direction of the MPO optical fiber connector for the section where each link correspondingly enters and exits the limit hole, there is formed a cutting plane, and the groove wall on one side of the limit hole corresponding to the cutting plane is parallel to the cutting plane.

[0010] Further, on the outer shell, there is further provided an avoidance groove that is connected to the front end hole opening of the limit hole and extends a predetermined length towards the front end of the outer shell along the length direction of the link for accommodating the link when the outer shell moves closer to the tail sheath.

[0011] Further, on one side of the limit hole adjacent to the inner cavity of the outer shell, there is formed a first opening communicating with the inner cavity of the outer shell.

[0012] Further, the part of the inner shell between the outer shell and the tail sheath further forms a stop bar for correspondingly limiting the movement stroke of the outer shell. At the position corresponding to the link on the stop bar, there is further provided a first receiving groove correspondingly penetrating through the stop bar and for accommodating the link. The outer side groove wall of the first receiving groove forms a second opening.

[0013] Furthermore, a stopper is inserted and assembled inside the inner shell. The tail of the stopper also extends out of the inner shell, and a crimping sleeve is fixedly assembled at the tail of the stopper extending outside the inner shell. A support tube is assembled in the inner cavity of the tail sheath. The tail sheath sleevs the support tube on the crimping sleeve, and the support tube is in clearance fit with the crimping sleeve. A second receiving groove for receiving the connecting rod is further provided at the position of the tail of the stopper extending outside the inner shell corresponding to the connecting rod.

[0014] After adopting the above technical solution, the embodiment of the present utility model has at least the following beneficial effects: By adding a linkage member in the embodiment of the present utility model, several connecting rods protrude from a connecting rod seat. During assembly, the connecting rods on the linkage member are directly passed through the through holes of the stop bosses, and then the front ends of the connecting rods are respectively connected to the outer shell. At the same time, the connecting rod seat is arranged against the outer side wall of the front end of the tail sheath and is blocked and limited by the stop bosses, so that the simultaneous assembly of multiple connecting rods can be realized, and the assembly is very convenient. Moreover, during specific operation, when it is necessary to unlock the MPO connector, the user drives the tail sheath to move away from the outer shell relative to the inner shell. At this time, the stop bosses push the connecting rod seat, so that the connecting rod seat can synchronously drive the outer shell to move through multiple connecting rods. Moreover, multiple connecting rods are provided on a connecting rod seat, and the synchronism of the connecting rods is better, so that the outer shell is more evenly stressed and is not easily deflected during movement. Therefore, there is no obvious frictional resistance between the outer shell and the inner shell, ensuring the smooth movement of the outer shell. Description of the Drawings

[0015] Figure 1 It is a schematic exploded view of an optional embodiment of the MPO connector of the present utility model.

[0016] Figure 2 It is a schematic assembled view of an optional embodiment of the MPO connector of the present utility model.

[0017] Figure 3 It is a schematic structural view of the linkage member of an optional embodiment of the MPO connector of the present utility model.

[0018] Figure 4 It is a schematic three-dimensional structural view of the rear side view of the outer shell of an optional embodiment of the MPO connector of the present utility model.

[0019] Figure 5 It is a schematic cross-sectional view of the middle axial plane of two connecting rods on the same side of the outer shell of an optional embodiment of the MPO connector of the present utility model.

[0020] Figure 6 It is a schematic cross-sectional view of the middle axial plane of two connecting rods on different sides of the outer shell of an optional embodiment of the MPO connector of the present utility model.

[0021] Figure 7This is a schematic cross-sectional structure diagram of an optional embodiment of the MPO connector of the present utility model along the thickness central axis plane. Detailed implementation manners

[0022] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present utility model and are not intended to limit the present utility model. Moreover, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0023] As Figures 1-6 shown, an optional embodiment of the present utility model provides an MPO connector, including an inner shell 1, an outer shell 3 movably sleeved outside the inner shell 1 along the length direction of the MPO connector, a tail sheath 5 movably connected to the tail end of the inner shell 1 along the length direction of the MPO connector, and a linkage 7 for correspondingly connecting the tail sheath 5 and the outer shell 1. A stop boss 50 is formed by protruding on the front side wall of the front end of the tail sheath 5, and a through hole 501 is formed in the stop boss 50. The linkage 7 includes a connecting rod seat 70 disposed on the outer side wall of the front end of the tail sheath 5 and blocked and limited by the stop boss 50, and a plurality of connecting rods 72 integrally protruding from one side of the connecting rod seat 70 toward the stop boss 50. Each of the connecting rods 72 passes through the corresponding through hole 501 on the tail sheath 5 and is connected to the outer shell 3. When the tail sheath 5 moves away from the outer shell 3 relative to the inner shell 1, the stop boss 50 pushes the connecting rod seat 70 to drive the connecting rods 72 to drive the outer shell 3 to move synchronously.

[0024] In the embodiment of the present utility model, by adding a linkage 7 and forming a plurality of connecting rods 72 protruding from a connecting rod seat 70, during assembly, the connecting rods 72 of the linkage 7 are directly passed through the through holes 501 of the stop boss 50, and then the front ends of the connecting rods 72 are respectively connected to the outer shell 3. At the same time, the connecting rod seat 70 is disposed on the outer side wall of the front end of the tail sheath 5 and blocked and limited by the stop boss 50, so that the simultaneous assembly of the plurality of connecting rods 72 can be realized, and the assembly is very convenient. Moreover, during specific operation, when it is necessary to unlock the MPO connector, the user drives the tail sheath 5 to move away from the outer shell 3 relative to the inner shell 1. At this time, the stop boss 50 pushes the connecting rod seat 70, so that the connecting rod seat 70 can drive the outer shell 3 to move synchronously through the plurality of connecting rods 72. Moreover, a plurality of connecting rods 72 are provided on one connecting rod seat 70, and the synchronism of the connecting rods 72 is better, so that the outer shell 3 is more evenly stressed and is not easily deflected during movement. Therefore, no obvious frictional resistance is formed between the outer shell 3 and the inner shell 1, ensuring the smooth movement of the outer shell 3.

[0025] In an optional embodiment of the present utility model, as Figure 1As shown, on the front end of the tail sheath 5, opposite side walls symmetrically bulge to form a retaining boss 50 each. At opposite ends of each retaining boss 50, a through hole 501 is provided. For each retaining boss 50, the MPO connector is provided with a linkage 7. At opposite ends of the link seat 70 of each linkage 7, a link is provided. The two links 72 of the same linkage 7 respectively pass through the two through holes 501 on the same retaining boss 50. In this embodiment, two retaining bosses 50 are symmetrically designed at the front end of the tail sheath 5, two through holes 501 are provided on the retaining bosses 50, and a linkage 7 is provided for each retaining boss 50, which facilitates assembly.

[0026] In an alternative embodiment of the present invention, on the front end of the tail sheath 5, opposite side walls symmetrically bulge to form a retaining boss 50 each. At opposite ends of each retaining boss 50, a through hole 501 is provided. The link seat 70 is annular and is correspondingly sleeved on the tail sheath 5. The link seat 70 is provided with a link corresponding to each through hole 501. In this embodiment, the link seat 70 of the linkage 7 is annularly designed, and only a number of links 72 consistent with the number of through holes 501 need to be correspondingly provided on one link seat 70, which is more convenient for assembly, and all the links 72 can be driven by the same link seat 70 to have better synchronism.

[0027] In an alternative embodiment of the present invention, as Figure 1 shown, the inner side wall of the link seat 70 is adapted to the outer wall profile of the front end of the tail sheath 5. In this embodiment, the link seat 70 and the outer wall profile of the front end of the tail sheath 5 are adapted, for example: both are arc surfaces that can be mutually adapted and fitted, so as to ensure that the linkage 7 is in contact with the outer wall of the front end of the tail sheath 5 and is more stable relative to the tail sheath 5, and it is not easy to shake.

[0028] In an alternative embodiment of the present invention, as Figures 1-6As shown, a limiting hole 30 coaxial with the through hole 501 is formed in the rear end face of the outer shell 3. A stop portion 721 is radially protruded from the front end of the connecting rod 72. The connecting rod 72 passes through the limiting hole 30 from back to front, and the stop portion 721 is in abutting fit with the outer peripheral edge of the front end hole opening of the limiting hole 30 to prevent the connecting rod 72 from disengaging from the limiting hole 30. A guiding arc surface 721a is further provided on the front end face of the stop portion 721 for guiding the elastic deformation of the stop portion 721 and / or the hole wall of the limiting hole 30 to allow the stop portion 721 to pass through the limiting hole 30. In this embodiment, by providing the limiting hole 30 on the outer shell 3 and providing the stop portion 721 at the front end of the connecting rod 72 to abut against the outer side end face of the front end hole opening of the limiting hole 30, the connecting rod 72 can be quickly connected to the outer shell 3, ensuring that when the tail sheath 5 is pulled backward, the outer shell 3 can be effectively driven to move synchronously through the connecting rod 72; moreover, by providing the guiding arc surface 721a, when the stop portion 721 abuts against the hole wall of the limiting hole 30 during assembly, the stop portion 721 and / or the hole wall of the limiting hole 30 can be better elastically deformed to allow the stop portion 721 to pass through the limiting hole 30, facilitating assembly.

[0029] In an alternative embodiment of the present utility model, as Figure 3 and Figure 6 shown, a cutting plane 723 is formed on the outer side wall of the section where each connecting rod 72 enters and exits the limiting hole 30 in the thickness direction of the MPO fiber optic connector. The groove wall of the limiting hole 30 on the side corresponding to the cutting plane 723 is parallel to the cutting plane 723. In this embodiment, by designing the cutting plane 723 on the section where the connecting rod 72 enters and exits the limiting hole 30, and the corresponding hole wall of the limiting hole 30 is also designed to be parallel to the cutting plane 723, it can better fit and position with the cutting plane 723. Moreover, it is beneficial to reduce the thickness of the overall MPO connector and ensure that the hole wall of the limiting hole 30 has a certain thickness and good mechanical strength.

[0030] In an alternative embodiment of the present utility model, as Figure 1 、 Figure 2 and Figure 5As shown, a relief groove 32 is further provided on the outer shell 3. The relief groove 32 is connected to the front end orifice of the limit hole 30 and extends a predetermined length along the length direction of the connecting rod 72 towards the front end of the outer shell 3, and is used to accommodate the connecting rod 72 when the outer shell 3 moves closer to the tail sheath 5. In a specific implementation, the relief groove 32 may penetrate through the shell wall of the outer shell 3 and communicate with the inner cavity of the outer shell 3. In this embodiment, by further forming the relief groove 32 on the outer shell 3, during the process of assembling the MPO connector to the adapter, when the outer shell 3 is pushed and retreated by the adapter, it will not interfere with the connecting rod 72, ensuring smooth assembly. Moreover, by accommodating the connecting rod 72 in the relief groove 32, it can also prevent the connecting rod 72 from protruding too much relative to the outer shell 3, and can effectively reduce the overall size of the MPO connector, which is beneficial to assembling more MPO connectors in a limited space.

[0031] In an alternative embodiment of the present utility model, as Figure 4 shown, a first open end 301 communicating with the inner cavity of the outer shell 3 is formed on one side of the limit hole 30 adjacent to the inner cavity of the outer shell 3. In this embodiment, by forming the first open end 301 on one side of the limit hole 30 adjacent to the inner cavity of the outer shell 3, when assembling the connecting rod 72, it is beneficial for the hole wall of the limit hole 30 to elastically deform under the extrusion of the stop portion 721, facilitating quick assembly.

[0032] In an alternative embodiment of the present utility model, as Figure 1 、 Figure 2 and Figure 5 shown, a stop strip 10 for correspondingly limiting the moving stroke of the outer shell 3 is further formed on the part of the inner shell 1 between the outer shell 3 and the tail sheath 5. A first receiving groove 101 corresponding to the position of the connecting rod 72 and penetrating through the stop strip 10 for accommodating the connecting rod 72 is provided on the stop strip 10. A second open end 101a for assembling the connecting rod 72 is formed on the outer side wall of the first receiving groove 101. In this embodiment, by providing the stop strip 10 on the inner shell 1, the moving stroke of the outer shell 3 moving backward can be effectively limited, preventing the outer shell 3 from completely falling off the inner shell 1. The through hole 101 on the stop strip 10 facilitates the connecting rod 72 to pass through and provides a certain positioning and guiding function. Moreover, adopting a groove-shaped structure design also facilitates forming the first receiving groove 101. Additionally, by designing the second open end 101a, it is beneficial to reduce the overall thickness of the MPO connector.

[0033] In an alternative embodiment of the present utility model, as Figures 1-7As shown, a stopper 12 is inserted and assembled inside the inner shell 1, and the tail of the stopper 12 also extends out of the inner shell 1. A crimping sleeve 14 is fixedly assembled at the tail of the stopper 12 extending outside the inner shell 1. A support tube 52 is assembled in the inner cavity of the tail sheath 5. The tail sheath 5 has the support tube 52 sleeved on the crimping sleeve 14, and the support tube 52 and the crimping sleeve 14 are in clearance fit. A second receiving groove 121 for receiving the connecting rod 72 is provided at the position corresponding to the connecting rod 72 at the tail of the stopper 12 extending outside the inner shell 1. In this embodiment, a crimping sleeve 14 is assembled at the tail of the inner shell 1 by means of the stopper 12, and a support tube 52 is also provided inside the tail sheath 5. The tail sheath 5 has the support tube 52 sleeved on the crimping sleeve 14 and is in clearance fit with the crimping sleeve 14, so that the tail sheath 5 can move back and forth relative to the inner shell 1 in the length direction. The connection structure is simple and easy to assemble, and the internal optical fiber can be effectively protected by the support tube 52 to avoid the influence on the optical fiber when the tail sheath 5 moves. Also, the second receiving groove 121 is correspondingly provided on the stopper 12 to receive the connecting rod 72, avoiding the connecting rod 72 protruding too much from the stopper 12, which is beneficial to reducing the overall size of the MPO connector.

[0034] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. All of these fall within the protection scope of the present invention.

Claims

1. An MPO connector, comprising an inner housing, an outer housing movably sleeved outside the inner housing along the length direction of the MPO connector, and a tail sheath movably connected to the tail end of the inner housing along the length direction of the MPO connector. A stop boss is formed by the convexity of the front side wall of the tail sheath, and a through hole is provided on the stop boss. It is characterized in that, The MPO connector further includes a linkage for correspondingly connecting the tail sheath and the housing. The linkage includes a linkage seat disposed on the outer side wall of the front end of the tail sheath and blocked and limited by the stop boss, and a plurality of linkages integrally protruding from one side of the linkage seat toward the stop boss. Each linkage passes through the corresponding through hole on the tail sheath and is connected to the housing. When the tail sheath moves away from the housing relative to the inner housing, the stop boss pushes the linkage seat to cause the linkages to drive the housing to move synchronously.

2. The MPO connector according to claim 1, wherein On the opposite side walls of the front end of the tail sheath, a stop boss is symmetrically protruded from each side to form a stop boss. A through hole is provided at each of the opposite ends of each stop boss. The MPO connector is provided with a linkage for each stop boss. Each end of the linkage seat of each linkage is provided with a linkage. The two linkages of the same linkage correspondingly pass through the two through holes on the same stop boss.

3. The MPO connector according to claim 1, wherein On the opposite side walls of the front end of the tail sheath, a stop boss is symmetrically protruded from each side to form a stop boss. A through hole is provided at each of the opposite ends of each stop boss. The linkage seat is in a ring shape and is correspondingly sleeved on the tail sheath. The linkage seat is provided with a linkage corresponding to each through hole.

4. The MPO connector according to any one of claims 1-3, characterized in that, The inner side wall of the linkage seat is adapted to the outer wall contour of the front end of the tail sheath.

5. The MPO connector according to claim 1, characterized in that, A limit hole coaxial with the through hole is provided on the rear end face of the housing. A stop portion is radially protruded at the front end of the linkage. The linkage passes through the limit hole from back to front, and the stop portion is in abutting fit with the outer peripheral edge of the front hole orifice of the limit hole to prevent the linkage from disengaging from the limit hole. A guiding arc surface for guiding the elastic deformation of the stop portion and / or the hole wall of the limit hole to allow the stop portion to pass through the limit hole is further provided on the front end face of the stop portion.

6. The MPO connector according to claim 5, wherein On the outer side wall of each linkage corresponding to the section entering and exiting the limit hole in the thickness direction of the MPO optical fiber connector, a cutting plane is formed. The groove wall of the limit hole corresponding to the cutting plane is parallel to the cutting plane.

7. The MPO fiber optic connector according to claim 5, characterized in that, The housing is further provided with an avoidance groove connected to the front hole orifice of the limit hole and extending a predetermined length toward the front end of the housing along the length direction of the linkage for accommodating the linkage when the housing moves close to the tail sheath.

8. The MPO optical fiber connector according to claim 7, wherein A first opening communicating with the inner cavity of the housing is formed on one side of the limit hole adjacent to the inner cavity of the housing.

9. The MPO fiber optic connector according to claim 1, wherein, A stop bar for correspondingly limiting the movement stroke of the housing is further formed on the part of the inner housing between the housing and the tail sheath. A first receiving groove corresponding to the position of the linkage and penetrating through the stop bar for accommodating the linkage is further provided on the stop bar. The outer side groove wall of the first receiving groove forms a second opening.

10. The MPO fiber optic connector according to claim 1, wherein A stop member is inserted and assembled inside the inner shell. The tail of the stop member also extends out of the inner shell. A crimping sleeve is fixedly assembled at the tail of the stop member extending outside the inner shell. A support tube is assembled in the inner cavity of the tail sheath. The tail sheath sleevingly fits the support tube on the crimping sleeve, and the support tube and the crimping sleeve are in clearance fit. A second receiving groove for receiving the connecting rod is further provided at the position corresponding to the connecting rod at the tail of the stop member extending outside the inner shell.

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