MPO fiber optic connector

Abstract

The embodiment of the present application provides a kind of MPO fiber optic connector, including inner shell, the outer shell of being movably sleeved in the outer portion of inner shell along the length direction of MPO fiber optic connector, tail sheath being movably connected to the tail end of the inner shell along the length direction of the MPO fiber optic connector and the connecting rod of the two ends with the outer shell and the tail sheath corresponding connection respectively, when the tail sheath moves relative to inner shell in the direction of moving away from the outer shell, outer shell is moved synchronously by connecting rod.The embodiment of the present application is movably assembled in the tail end of inner shell by tail sheath, and outer shell and tail sheath are also connected by connecting rod, and only need to pull the tail sheath outward to make outer shell move from locking position, and then MPO fiber optic connector can be pulled out, since tail sheath is thinner than the main part of the front part of MPO fiber optic connector, and can be conveniently pulled operation, and since it is not necessary to pinch outer shell directly, it is not necessary to consider providing operating space for pinching outer shell operation, and MPO fiber optic connector can be more densely assembled.

Description

TECHNICAL FIELD

[0001] The embodiment of the application relates to the technical field of optical fiber connectors, in particular to an MPO optical fiber connector. BACKGROUND

[0002] The conventional MPO optical fiber connector generally comprises an inner shell, a ferrule assembly assembled in the inner shell and protruding from the front end opening of the inner shell, an outer shell movably sleeved outside the inner shell along the length direction of the connector, a reset spring assembled between the inner shell and the outer shell for facilitating the reset of the outer shell, and a tail sheath fixedly assembled at the tail end of the inner shell.

[0003] When the MPO optical fiber connector is assembled to the corresponding adapter, only the front end of the MPO optical fiber connector needs to be inserted into the corresponding plug hole of the adapter, and the operation is relatively simple. When the assembly is completed, the inner clamping hook on the front end side of the inner shell of the MPO optical fiber connector is correspondingly clamped and buckled with the outer clamping hook on the inner side of the plug hole of the adapter, and the outer shell is sleeved outside the outer clamping hook under the elastic force of the reset spring to prevent the outer clamping hook from opening outward, so that the inner clamping hook and the outer clamping hook remain in the clamped and buckled state and cannot be loosened, ensuring that the MPO optical fiber connector and the adapter are stably connected and cannot be separated. When the MPO optical fiber connector needs to be disassembled from the adapter, the outer shell needs to be pinched by hand or other tools and pulled backward to move the outer shell away from the outer side of the outer clamping hook, and then the inner clamping hook and the outer clamping hook are separated from each other by continuously pulling outward, so that the MPO optical fiber connector can be removed from the adapter.

[0004] With the development of 5G communication, cloud computing and big data, the integration degree of related data centers is getting higher and higher, and it is necessary to accommodate unlimited data in limited space, which leads to the need to densely assemble as many MPO optical fiber connectors as possible in limited space, and to facilitate disassembly, the outer shell needs to be pinched by hand or other tools to perform related disassembly operations, and a certain distance needs to be reserved between adjacent MPO optical fiber connectors, which limits the installation density of the MPO optical fiber connector. SUMMARY

[0005] The technical problem to be solved by the embodiment of the application is to provide an MPO optical fiber connector which can be conveniently disassembled from the connected adapter in a high installation density application environment.

[0006] In order to solve the above technical problems, the embodiment of the present application provides the following technical scheme: an MPO optical fiber connector, comprising an inner shell, an outer shell movably sleeved on the outer part of the inner shell along the length direction of the MPO optical fiber connector, a tail sheath movably connected to the tail end part of the inner shell along the length direction of the MPO optical fiber connector, and a connecting rod with two ends respectively connected with 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 synchronously moved by the connecting rod.

[0007] Further, the outer shell and the tail sheath are respectively provided with front and rear through holes arranged coaxially, the front and rear ends of the connecting rod respectively pass through the front and rear through holes, the front and rear ends of the connecting rod respectively form front and rear stop parts, the front stop part abuts on the end face outside the front end aperture of the front through hole, and the rear stop part abuts on the end face outside the rear end aperture of the rear through hole.

[0008] Further, the front stop part is a conical frustum body integrally formed on the front end part of the connecting rod and gradually thickens from the front end to the rear end, the rear half part of the front through hole is in the shape of a bell mouth, and the rear end of the front stop part abuts on the end face outside the front end aperture of the front through hole.

[0009] Further, the rear stop part is a protruding ring integrally formed on the rear end part of the connecting rod.

[0010] Further, the tail sheath is fixed relative to the rear end of the connecting rod, the outer shell is provided with a front through hole through which the front end of the connecting rod passes, and the front end of the connecting rod further forms a front stop part corresponding to abutting on the end face outside the front end aperture of the front through hole.

[0011] Further, the outer shell is further provided with a displacement slot in connection with the front end aperture of the front through hole and extending to the front end part of the outer shell by a predetermined length along the length direction of the connecting rod, for accommodating the connecting rod when the outer shell moves close to the tail sheath.

[0012] Further, the outer shell is fixed relative to the front end of the connecting rod, the tail sheath is provided with a rear through hole through which the rear end of the connecting rod passes, and the rear end of the connecting rod further forms a rear stop part corresponding to abutting on the end face outside the rear end aperture of the rear through hole.

[0013] Further, the part of the inner shell between the outer shell and the tail sheath further forms a stop bar for corresponding limiting the movable stroke of the outer shell, and the stop bar is further provided with a through hole for the connecting rod to pass through at the position corresponding to the connecting rod.

[0014] Further, the inner shell is internally fixedly assembled with a stopper, a tail of the stopper further extends out of the inner shell, and a tail of the stopper extending out of the inner shell is further fixedly assembled with a crimping sleeve, a support tube is assembled in an inner cavity of the tail sleeve, and the tail sleeve is sleeved on the crimping sleeve with the support tube and the crimping sleeve in clearance fit.

[0015] Further, the tail of the stopper extending out of the inner shell is further provided with a receiving groove for accommodating the connecting rod at a position corresponding to the connecting rod.

[0016] After the above technical scheme is adopted, the embodiment of the present application has at least the following beneficial effects: the tail sleeve is movably assembled at the rear end of the inner shell, and the outer shell and the tail sleeve are further connected through the connecting rod, so that when the MPO fiber connector needs to be detached from the adapter, the outer shell can be moved away from the outside of the corresponding outer clamping hook of the adapter by only pulling the tail sleeve outward, and then the MPO fiber connector can be pulled out. Since the tail sleeve is located at the tail of the MPO fiber connector, it is thinner than the main body part at the front part of the MPO fiber connector, and can be conveniently pulled and operated. Moreover, since it is not necessary to directly pinch the outer shell, it is not necessary to consider providing necessary operation space for pinching the outer shell, and the MPO fiber connector can be more densely assembled. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 4 is a structural schematic diagram of a split state of an optional embodiment of the MPO fiber connector of the present application.

[0018] Figure 2 FIG. 5 is a structural schematic diagram of a combined state of an optional embodiment of the MPO fiber connector of the present application.

[0019] Figure 3 FIG. 6 is a structural schematic diagram of the MPO fiber connector of an optional embodiment of the present application being assembled to an adapter.

[0020] Figure 4 FIG. 7 is a cross-sectional structural schematic diagram of the MPO fiber connector of the embodiment of the present application along a central axial plane of the MPO fiber connector when the MPO fiber connector is assembled to an adapter. DETAILED DESCRIPTION

[0021] The present application will be further described below in conjunction with the drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present application and are not intended to limit the present application, and the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] As Figures 1 to 4As shown, one optional embodiment of the present application provides an MPO fiber connector 1, which comprises an inner shell 10, an outer shell 12 movably sleeved outside the inner shell 10 along the length direction of the MPO fiber connector 1, a tail sheath 14 movably connected to the tail end of the inner shell 10 along the length direction of the MPO fiber connector 1, and a connecting rod 16 connected to the outer shell 12 and the tail sheath 14 respectively. When the tail sheath 14 moves away from the outer shell 12 relative to the inner shell 10, the outer shell 12 is synchronously moved by the connecting rod 16.

[0023] In the embodiment of the present application, the tail sheath 14 is movably assembled to the rear end of the inner shell 10, and the outer shell 12 and the tail sheath 14 are further connected by the connecting rod 16. Therefore, when it is needed to detach the MPO fiber connector 1 from the adapter 2, the outer shell 12 can be moved away from the outside of the corresponding outer clamping hook 20 of the adapter 2 by pulling the tail sheath 14 outward. Then, when the outer shell 12 is pulled outward, the inner clamping hook 100 at the front end of the inner shell 10 can be separated from the outer clamping hook 20 (the connection and cooperation mode and structure between the MPO fiber connector 1 and the adapter 2 are conventional structures, which are not described in detail here), so that the MPO fiber connector 1 can be pulled out. Since the tail sheath 14 is located at the tail of the MPO fiber connector 1 and is thinner than the main body at the front of the MPO fiber connector 1, the tail sheath 14 can be conveniently pulled. Moreover, since the outer shell 12 does not need to be directly pinched, the necessary operation space for pinching the outer shell 12 is not needed to be considered, and the MPO fiber connector 1 can be more densely assembled. It can be understood that the number of the connecting rod 16 can be one, two or more. In the embodiment as shown, the connecting rod 16 is two and symmetrically arranged on the same side of the MPO fiber connector 1. Figures 1 to 4 In the embodiment as shown, the connecting rod 16 is two and symmetrically arranged on the same side of the MPO fiber connector 1.

[0024] In one optional embodiment of the present application, as shown, Figures 1 to 4 As shown, the outer shell 12 and the tail sheath 14 are respectively provided with front through holes 120 and rear through holes 140 arranged in the same axis, the front and rear ends of the connecting rod 16 pass through the front through holes 120 and the rear through holes 140 respectively, the front and rear ends of the connecting rod 16 form front and rear stop portions 160 and 162 respectively, the front stop portion 160 abuts on the end face outside the front end hole of the front through hole 120, and the rear stop portion 162 abuts on the end face outside the rear end hole of the rear through hole 140. In this embodiment, the front and rear through holes 120 and 140 are respectively arranged on the outer shell 12 and the tail sheath 14, and the front and rear stop portions 160 and 162 of the connecting rod 16 abut on the end faces outside the corresponding end holes of the front and rear through holes 120 and 140 respectively, so that the outer shell 12 and the tail sheath 14 can be effectively connected, and the outer shell 12 can be effectively moved synchronously by the connecting rod 16 when the tail sheath 14 is pulled backward.

[0025] In an optional embodiment of the present application, as shown in Figures 1 to 4 the front stop portion 160 is a conical frustum integrally formed at the front end of the connecting rod 16, and the rear half of the front through hole 120 is in the shape of a bell mouth. The rear end of the front stop portion 160 abuts against the end face outside the front end hole of the front through hole 120. In this embodiment, the front stop portion is designed in the shape of a conical frustum, and the rear half of the front through hole 120 is also designed in the shape of a bell mouth, so that the front end of the connecting rod 16 is conveniently inserted from the rear end hole of the front through hole 120, and the front stop portion 160 also pushes the inner wall of the front through hole 120, so that the front stop portion 160 and the front through hole 120 are both elastically deformed to facilitate the front stop portion 160 to smoothly pass through the front through hole 120. After the front stop portion 160 completely passes through the front through hole 120, the thicker end of the conical frustum-shaped front stop portion 120 abuts against the end face outside the front end hole of the front through hole 120 to realize positioning, so that the assembly is convenient and the positioning connection is stable.

[0026] In an optional embodiment of the present application, as shown in Figures 1 to 4 the rear stop portion 162 is a protruding ring integrally formed at the rear end of the connecting rod 16. In this embodiment, the rear stop portion 162 is formed by integrally forming a protruding ring at the rear end of the connecting rod 16, which not only has a simple structure and is convenient to form, but also can be stably connected and positioned with the tail sheath 14, so that the tail sheath 14 is not completely pulled off from the rear end of the inner shell 10 when the tail sheath 14 is pulled backward.

[0027] In another optional embodiment of the present application, as shown in Figures 1 to 4 the tail sheath 14 is fixed relative to the rear end of the connecting rod 16, the outer shell 12 is provided with a front through hole 120 for the front end of the connecting rod 16 to pass through, and the front end of the connecting rod 16 further forms a front stop portion 160 corresponding to abut against the end face outside the front end hole of the front through hole 120. In this embodiment, the rear end of the connecting rod 16 is fixed relative to the tail sheath 14, so that the structure is simplified, and the processing and assembly are facilitated. In specific implementation, the connecting rod 16 and the tail sheath 14 can be integrally formed, or separately formed and then fixed and assembled integrally, for example, by threaded connection or welding.

[0028] In still another optional embodiment of the present application, as shown in Figures 1 to 4As shown, the shell 12 is further provided with a clearance slot 122 which is connected with the front end opening of the front through hole 120 and extends outwardly from the front end of the shell to a predetermined length, for accommodating the connecting rod 16 when the shell 12 moves close to the rear sheath 14. By further forming the clearance slot 122 on the shell 12, the shell 12 will not interfere with the connecting rod 16 when it is pushed backward by the adapter 2 during the assembly of the MPO fiber connector to the adapter, ensuring smooth assembly. Moreover, accommodating the connecting rod 16 in the clearance slot 122 can also avoid the connecting rod 16 from protruding too much relative to the shell 12, effectively reducing the overall size of the MPO fiber connector, and facilitating the assembly of more MPO fiber connectors in limited space.

[0029] In another optional embodiment of the present application, the front end of the shell 12 is fixed relative to the connecting rod 16, and the rear sheath 14 is provided with a rear through hole 140 through which the rear end of the connecting rod 16 passes, and the rear end of the connecting rod 16 is further formed with a rear stop 162 on the end face corresponding to the outside of the rear end opening of the rear through hole 140. This embodiment can simplify the structure, facilitate processing and assembly by fixing the front end of the connecting rod 16 relative to the shell 12. In specific implementation, the connecting rod 16 and the shell 12 can be integrally formed, or separately formed and then fixed and assembled integrally, for example, by threaded connection or welding.

[0030] In an optional embodiment of the present application, the part of the inner shell 10 between the shell 12 and the rear sheath 14 is further formed with a stop bar 100 for corresponding limiting the travel of the shell 12, and the stop bar 100 is further provided with a through hole 102 at a position corresponding to the connecting rod 16 for the connecting rod 16 to pass through. This embodiment can effectively limit the travel of the shell 12 backward by providing the stop bar 100 on the inner shell 10, avoiding the shell 12 from completely falling off the inner shell 10, and the through hole 102 on the stop bar 100 facilitates the connecting rod 16 to pass through and provides certain positioning and guiding effect.

[0031] In an optional embodiment of the present application, the inner shell 10 is internally fixedly assembled with a stopper 18, the tail of the stopper 18 further extends out of the inner shell 10, and the tail of the stopper 18 extending out of the inner shell 10 is further fixedly assembled with a crimping sleeve 19, the inner cavity of the tail sheath 14 is assembled with a supporting tube 142, the tail sheath 14 is sleeved on the crimping sleeve 19 with the supporting tube 142, and the supporting tube 142 is in clearance fit with the crimping sleeve 19. In this embodiment, the crimping sleeve 19 is assembled on the tail of the inner shell 10 by means of the stopper 18, the supporting tube 142 is further arranged in the tail sheath, the tail sheath 14 is sleeved on the crimping sleeve 19 with the supporting tube 142, and the tail sheath 14 is in clearance fit with the crimping sleeve 19, so that the tail sheath 14 can move back and forth in the length direction relative to the inner shell 10, the connecting structure is simple and easy to assemble, and the optical fiber in the inner shell 10 can be effectively protected by the supporting tube 142 to avoid affecting the optical fiber when the tail sheath moves.

[0032] In an optional embodiment of the present application, the tail of the stopper 18 extending out of the inner shell 10 is further provided with a receiving groove 180 corresponding to the connecting rod 16 for accommodating the connecting rod 16. In this embodiment, the connecting rod 16 is accommodated in the receiving groove 180 arranged on the stopper 18, so that the connecting rod 16 does not excessively protrude relative to the stopper 18, which is beneficial to reducing the overall size of the MPO optical fiber connector.

[0033] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative but not restrictive, and those skilled in the art can make many changes under the guidance of the present application without departing from the purpose of the present application and the scope protected by the claims, which are all within the protection scope of the present application.

Claims

1. An MPO fiber optic connector, comprising an inner shell and an outer shell movably fitted around the inner shell along the length direction of the MPO fiber optic connector, characterized in that: The MPO fiber optic connector further includes a tail sleeve that can be movably connected to the tail end of the inner shell along the length direction of the MPO fiber optic connector, and connecting rods that are respectively connected to the outer shell and the tail sleeve at both ends. When the tail sleeve moves away from the outer shell relative to the inner shell, the connecting rods drive the outer shell to move synchronously. The outer casing and the tail sleeve are respectively provided with corresponding coaxially arranged front through holes and rear through holes. The front and rear ends of the connecting rod pass through the front through holes and the rear through holes respectively. The front and rear ends of the connecting rod form a front stop and a rear stop respectively. The front stop abuts against the end face outside the front end opening of the front through hole, and the rear stop abuts against the end face outside the rear end opening of the rear through hole. The portion of the inner shell between the outer shell and the tail sleeve also forms a baffle for correspondingly limiting the travel of the outer shell. The baffle also has a through hole at a position corresponding to the connecting rod for the connecting rod to pass through. The outer casing is also provided with a clearance groove that connects to the front end opening of the front through hole and extends a predetermined length along the length of the connecting rod towards the front end of the outer casing, for accommodating the connecting rod when the outer casing moves closer to the tail sleeve. Driven by the connecting rod, the rear stop can move axially back and forth on the outer side of the tail sleeve and on the side of the rear through hole away from the outer shell. A support tube is assembled in the inner cavity of the tail sheath, and the support tube supports the tail sheath and is in clearance fit with a component located inside the support tube.

2. The MPO fiber optic connector as described in claim 1, characterized in that, The front stop is a truncated cone-shaped part integrally formed on the front end of the connecting rod, which is thinner at the front and thicker at the rear. The rear half of the front through hole is flared, and the rear end of the front stop abuts against the end face outside the front opening of the front through hole.

3. The MPO fiber optic connector as described in claim 1, characterized in that, The rear stop is a convex ring integrally formed on the rear end of the connecting rod.

4. The MPO fiber optic connector as described in claim 1, characterized in that, A stop is fixedly assembled inside the inner shell. The tail of the stop extends out of the inner shell, and a crimping sleeve is fixedly assembled on the tail of the stop extending outside the inner shell. The tail sleeve is sleeved on the crimping sleeve by the support tube, and the support tube and the crimping sleeve are in clearance fit.

5. The MPO fiber optic connector as described in claim 4, characterized in that, The stop member extending beyond the inner shell has a receiving groove at a position corresponding to the connecting rod for accommodating the connecting rod.

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