MPO connector

Abstract

The MPO connector comprises an outer shell, an inner shell and a push-pull piece, the outer shell is sleeved on the inner shell, the outer shell is movably arranged relative to the inner shell so as to open or cover a first clamping groove of the inner shell, the push-pull piece is connected with the outer shell and used for driving the outer shell to move, and the outer shell is provided with a clamping part; the push-pull piece comprises a second clamping hook and a release part, the second clamping hook movably abuts against the clamping part, the release part drives the second clamping hook to move so as to separate the second clamping hook from the clamping part, the second clamping hook movably abuts against the clamping part, and the connection mode of the push-pull piece and the shell is simple; the second clamping hook and the shell are separated through the release part, so that the push-pull piece is disassembled, and the shell and the push-pull piece are conveniently disassembled and assembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field technical field of optical fiber connector, specifically relates to a MPO connector. BACKGROUND

[0002] MPO connector is used for the connector of the repeated plug of optical fiber, and the existing MPO connector is mainly pulled and inserted by holding the MPO connector shell by hand when being used, and with the improvement of communication speed and capacity, the use density of MPO connector is higher and higher, and more connectors need to be integrated and installed in limited space, and with the improvement of the installation density of MPO connector, the gap between MPO connectors on the equipment is smaller and smaller, so that the pulling and insertion of MPO connector becomes more and more difficult, and therefore the pulling and insertion of MPO connector in the case of high density and small space needs to be solved.

[0003] The prior art installs the pulling aid structure on the shell, moves the shell through the pulling aid structure to realize the pulling and insertion of MPO connector in the case of high density and small space, and the patent document with the application number of 202411058577.8 and the publication date of 2024.12.27 discloses an MPO connector with a pulling aid function, which is connected with the shell body through the pulling aid ring, and then the shell body is moved to realize the pulling and insertion by holding the pulling aid ring when the MPO connector is pulled out, but the pulling aid ring of the MPO connector needs to be assembled on the shell body through a tool during assembly, and the disassembly between the pulling aid ring and the shell body is complex. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing an MPO connector, which is connected with the shell through the second hook and the engaging part, the connection mode of the push-pull piece and the shell is simple, the push-pull piece is disassembled by releasing the second hook from the shell, and the disassembly between the shell and the push-pull piece is convenient.

[0005] In order to solve the above technical problems, the technical scheme used by the utility model is as follows:

[0006] The MPO connector comprises a shell, an inner shell body and a push-pull piece, the shell is sleeved on the inner shell body, the shell is movably arranged relative to the inner shell body to open or cover the first clamping groove of the inner shell body, the push-pull piece is connected with the shell and used for driving the shell to move, the push-pull piece comprises a second hook and a release part, the second hook is movably connected with the engaging part, and the release part drives the second hook to move and is used for separating the second hook from the engaging part.

[0007] Preferably, the shell is arranged outside the second hook, the second hook is embedded in the shell and matched with the engaging part.

[0008] Preferably, the second hook is connected with a release part, and the release part is a flexible release part.

[0009] Preferably, the second hook is outwardly protrudingly formed from the side wall of the push-pull piece; when the release part is deformed under force, the second hook is swung inwardly to separate from the outer shell.

[0010] Preferably, a protruding part is outwardly protrudingly formed on the surface of the release part, and a plurality of protruding parts are distributed along the length direction of the push-pull piece.

[0011] Preferably, the clamping part is a clamping groove, and the length of the clamping part is greater than the cross-sectional length of the second hook extending into the clamping part.

[0012] Preferably, the inner shell body is provided with an outwardly protruding guide part, the guide part is located on one side of the first clamping groove, and the guide part is used for guiding the cooperation of the first clamping groove and the hook of the MPO adapter; the guide part comprises a first guide inclined surface and a second guide inclined surface, and the second guide inclined surface is located between the first guide inclined surface and the first clamping groove; the first guide inclined surface is outwardly and obliquely arranged along the length direction of the inner shell body; and the second guide inclined surface is inwardly and obliquely arranged along the length direction of the inner shell body.

[0013] Preferably, a shell reset spring is arranged between the outer shell and the inner shell body along the movement direction of the outer shell.

[0014] Preferably, the MPO connector further comprises a ferrule, a guide pin base, a rear shell body, a compression ring and a tail sleeve; the inner shell body is sleeved on the ferrule, the guide pin base is arranged at the rear end of the ferrule, the rear shell body is arranged at the rear end of the guide pin base and connected with the inner shell body, a spring is arranged between the guide pin base and the rear shell body, the compression ring is arranged at the rear end of the rear shell body and connected with the rear shell body, the tail sleeve and the push-pull piece are sleeved on the compression ring, and an optical fiber is connected with the guide pin base through the tail sleeve, the push-pull piece, the compression ring and the rear shell body; the push-pull piece is integrally arranged with the tail sleeve.

[0015] Preferably, the second hook is accommodated between the rear shell body and the outer shell; a receiving cavity and an avoiding cavity are arranged between the rear shell body and the outer shell; the radial length of the receiving cavity is less than the radial length of the second hook, and the radial length of the avoiding cavity is greater than the radial length of the second hook.

[0016] The beneficial effects of the MPO connector according to the utility model mainly lie in that the MPO connector is assembled on the MPO adapter for use, the first clamping groove is used for cooperating with the clamping hook of the MPO adapter; the first clamping groove is opened for the clamping hook of the MPO adapter to be inserted into or withdrawn from the first clamping groove; the first clamping groove is covered for locking the clamping hook of the MPO adapter in the first clamping groove to realize clamping of the MPO connector and the MPO adapter; the push-pull piece is arranged to drive the shell to move to realize plugging of the MPO connector on the MPO adapter in the case of high density and small space. Meanwhile, the push-pull piece and the clamping part are movably abutted, and the shell can move relative to the push-pull piece; in this way, the push-pull piece does not interfere with the opening of the first clamping groove, facilitating cooperation of the MPO connector and the MPO adapter, the connection mode of the push-pull piece and the shell is simple, the push-pull piece is detached by releasing the second clamping hook from the shell, and the shell and the push-pull piece are convenient to disassemble.

[0017] The second clamping hook is embedded into the shell, and the push-pull piece is separated from the shell by pressing the release part; the flexible release part is deformed under stress to drive the second clamping hook to swing inward and separate from the shell; in this way, the convenience of detaching the push-pull piece is improved.

[0018] The clamping groove and the second clamping part are arranged to be clamped, and the stability is good; meanwhile, the length of the clamping part is greater than the cross-sectional length of the second clamping hook inserted into the clamping part; in this way, the shell can move relative to the push-pull piece.

[0019] The guiding part is arranged to guide assembly of the MPO adapter and the MPO connector; when the MPO connector is inserted, the clamping hook of the MPO adapter approaches the first guiding slope; under the guiding action of the first guiding slope, the clamping hook of the MPO adapter swings outward and corresponds to the position of the shell; as the MPO connector continues to be inserted, the clamping hook of the MPO adapter pushes the shell to move relative to the inner shell body and the push-pull piece to open the first clamping groove; as the MPO connector continues to be inserted, the clamping hook of the MPO adapter is dislocated from the first guiding slope, and the clamping hook of the MPO adapter is reset and clamped in the first clamping groove; at this time, the shell is pushed in the opposite direction to cover the first clamping groove; the clamping hook of the MPO adapter is blocked from the first clamping groove by the shell, so as to lock the clamping hook of the MPO adapter in the first clamping groove.

[0020] When the MPO connector needs to be pulled out of the MPO adapter, the push-pull piece is pulled out, the second clamping hook and the clamping part act to drive the shell to move to open the first clamping groove; the shell no longer limits the clamping hook of the MPO adapter to swing outward; as the push-pull piece continues to be pulled out, the clamping hook of the MPO adapter contacts the second guiding slope, and under the guiding action of the second guiding slope, the clamping hook of the MPO adapter swings outward and is withdrawn from the first clamping groove; as the push-pull piece continues to be pulled out, the clamping hook of the MPO adapter is dislocated from the second guiding slope, and the clamping hook of the MPO adapter is reset and separated from the first clamping groove.

[0021] The shell reset spring is arranged for resetting the shell, and when the first clamping slot is opened, the clamping hook of the MPO adapter pushes the shell to move against the elastic force of the shell reset spring; after the pushing force of the clamping hook of the MPO adapter disappears, the shell reset spring drives the shell to reset and cover the first clamping slot.

[0022] The integrally arranged push-pull piece and tail cover make the structure of the MPO connector simple. Meanwhile, the second hook is accommodated between the rear shell and the shell, the accommodating cavity is used for limiting the swing of the second clamping hook, and the avoiding cavity is used for providing avoiding space for the swing of the second clamping hook, so that when the push-pull piece is disassembled, the second clamping hook and the second clamping slot need to be moved to the avoiding cavity, and then the release part is pressed to drive the second clamping hook to swing and separate from the second clamping slot, and the connection between the push-pull piece and the shell is reliable.

[0023] The second clamping hook and the clamping part movably abut, the connection mode of the push-pull piece and the shell is simple, the second clamping hook and the shell are separated through the release part, and the disassembly of the push-pull piece is realized, and the push-pull piece and the shell are convenient to disassemble. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and other objects, features and advantages of the present application will become more clearly understood from the following more particular description, taken in conjunction with the accompanying drawings. The same reference numerals in different drawings represent the same or similar elements unless otherwise specified. The drawings, which are not necessarily to scale, depict embodiments that are explained in the detailed description below.

[0025] Figure 1 It is a perspective view of the present application.

[0026] Figure 2 It is an exploded view of the present application.

[0027] Figure 3 It is a perspective view of the push-pull piece and the tail cover in the present application.

[0028] Figure 4 It is a side view of the present application after removing the dust cover.

[0029] Figure 5 It is Figure 4 It is a sectional view of the present application in the A-A direction closing the first clamping slot.

[0030] Figure 6 It is a sectional view of the present application opening the first clamping slot.

[0031] Figure 7 It is a schematic view of the second clamping hook moving to the avoiding cavity in the present application.

[0032] Label: shell 1, engaging part 11; inner shell 2, first clamping groove 21, guide part 22, first guide inclined surface 221, second guide inclined surface 222, shell reset spring 23; plug core 3; guide needle base 4, spring 41; rear shell 5, accommodating cavity 51, avoiding cavity 52; crimp ring 6; push-pull piece 7, second clamping hook 71, release part 72, protruding part 73; tail sleeve 8; dust cover 9. DETAILED DESCRIPTION

[0033] The technical scheme of the utility model will be described in further detail below in combination with the drawings and specific embodiments, so that the skilled in the art can better understand the utility model and can be implemented, but the embodiments are not as the limitation of the utility model, in the embodiment, it needs to be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model, and therefore cannot be understood as the limitation of the utility model.

[0034] It needs to be explained that when an element is considered to be "connected" to another element, it can be directly connected to the other element and integrated with it, or a middle element can exist at the same time. The terms "mounting", "one end", "the other end" and similar expressions used in the utility model are only for the purpose of illustration.

[0035] An MPO connector, as shown in Figures 1-7 ; comprising a shell 1, an inner shell 2, a plug core 3, a guide needle base 4, a rear shell 5, a crimp ring 6, a push-pull piece 7 and a tail sleeve 8; the inner shell 2 is sleeved on the plug core 3, the guide needle base 4 is arranged at the rear end of the plug core 3, the rear shell 5 is arranged at the rear end of the guide needle base 4 and is connected with the inner shell 2, the spring 41 is arranged between the guide needle base 4 and the rear shell 5, and the crimp ring 6 is arranged at the rear end of the rear shell 5 and is connected with the rear shell 5; the shell 1 is sleeved on the inner shell 2, the tail sleeve 8 is connected between the push-pull piece 7 and is sleeved on the crimp ring 6, and the optical fiber passes through the tail sleeve 8, the push-pull piece 7, the crimp ring 6 and the rear shell 5 and is connected with the guide needle base 4.

[0036] The push-pull piece 7 is connected with the shell 1 for driving the shell 1 to move, the shell 1 is movably arranged relative to the inner casing 2 to open or cover the first clamping groove 21 of the inner casing 2, and the shell 1 is provided with a clamping part 11; the push-pull piece 7 comprises a second clamping hook 71 and a release part 72, the second clamping hook 71 is movably abutted with the clamping part 11, and the release part 72 drives the second clamping hook 71 to move for separating the second clamping hook 71 from the clamping part 11. The movable abutment is that the second clamping hook 71 can move relative to the clamping part 11 and can also drive the clamping part 11 to move synchronously.

[0037] The MPO connector is assembled on the MPO adapter, the first clamping groove 21 is used for cooperating with the clamping hook of the MPO adapter; the first clamping groove 21 is opened for the clamping hook of the MPO adapter to be able to extend into or exit the first clamping groove 21; the first clamping groove 21 is covered for locking the clamping hook of the MPO adapter in the first clamping groove 21 to realize clamping of the MPO connector and the MPO adapter; the push-pull piece 7 is arranged to drive the shell 1 to move to realize plugging of the MPO connector on the MPO adapter in the case of high density and small space. Meanwhile, the push-pull piece 7 is movably abutted with the clamping part 11, and the shell 1 can move relative to the push-pull piece 7; in this way, the push-pull piece 7 does not interfere with opening of the first clamping groove 21, the MPO connector is convenient for cooperating with the MPO adapter, the connection mode of the push-pull piece 7 and the shell 1 is simple, the second clamping hook 71 is separated from the shell 1 through the release part 72 to realize dismounting of the push-pull piece 7, and the shell 1 and the push-pull piece 7 are convenient for dismounting.

[0038] The shell 1 is arranged outside the second clamping hook 71, the second clamping hook 71 is outwardly protrudingly formed from the side wall of the push-pull piece 7, and the second clamping hook 71 is embedded in the shell 1 and cooperates with the clamping part 11.

[0039] The second clamping hook 71 is connected with the release part 72, and the release part 72 is a flexible release part 72. The second clamping hook 71 is embedded in the shell 1, the push-pull piece 7 is separated from the shell 1 by pressing the release part 72; the flexible release part 72 is deformed under stress to drive the second clamping hook 71 to swing inwardly and separate from the shell 1; in this way, the convenience of dismounting the push-pull piece 7 is improved.

[0040] The second clamping hook 71 is accommodated between the rear casing 5 and the shell 1; the rear casing 5 and the shell 1 are provided with an accommodation cavity 51 and an avoiding cavity 52; the radial length of the accommodation cavity 51 is smaller than the radial length of the second clamping hook 71, and the radial length of the avoiding cavity 52 is greater than the radial length of the second clamping hook 71. The second clamping hook is accommodated between the rear casing 5 and the shell 1; the accommodation cavity 51 is used for limiting the swing of the second clamping hook 71, and the avoiding cavity 52 is used for providing swing space for the second clamping hook 71; in this way, when the push-pull piece 7 is dismounted, the second clamping hook 71 and the second clamping groove need to be moved to the avoiding cavity 52, and then the release part 72 is pressed to drive the second clamping hook 71 to swing and separate from the second clamping groove; the connection reliability between the push-pull piece 7 and the shell 1 is good.

[0041] The inner housing 2 is provided with an outwardly protruding guide portion 22 located on one side of the first clamping groove 21, which is used to guide the cooperation of the first clamping groove 21 and the clamping hook of the MPO adapter. The guide portion 22 comprises a first guide inclined surface 221 and a second guide inclined surface 222, and the second guide inclined surface 222 is located between the first guide inclined surface 221 and the first clamping groove 21. The first guide inclined surface 221 is outwardly and lengthwise inclinedly arranged on the inner housing 2, and the second guide inclined surface 222 is inwardly and lengthwise inclinedly arranged on the inner housing 2.

[0042] The guide portion 22 is arranged to guide the assembly of the MPO adapter and the MPO connector. The first guide inclined surface 221 is used to guide the outward swinging of the clamping hook (not shown in the figure) of the MPO adapter when the MPO connector is inserted into the MPO adapter. The clamping hook of the MPO adapter swings outwardly and corresponds to the position of the outer shell 1, so that the outer shell 1 can be moved backward to open the first clamping groove 21. With the continuous insertion of the MPO connector, the clamping hook of the MPO adapter is dislocated from the first guide inclined surface 221, and the clamping hook of the MPO adapter is reset and clamped in the first clamping groove 21.

[0043] The second guide inclined surface 222 is used to guide the outward swinging of the clamping hook of the MPO adapter when the MPO connector is pulled out of the MPO adapter. When the MPO connector is pulled out of the MPO adapter, the second clamping hook 71 acts on the clamping portion 11 to drive the outer shell 1 to move to open the first clamping groove 21 by pulling out the push-pull piece 7. With the outward pulling of the MPO connector, the clamping hook of the MPO adapter is disengaged from the first clamping groove 21 under the action of the second guide inclined surface 222.

[0044] The outer shell reset spring 23 is arranged between the outer shell 1 and the inner housing 2 in the moving direction of the outer shell 1. The outer shell reset spring 23 is arranged to reset the outer shell 1. When the first clamping groove 21 is opened, the clamping hook of the MPO adapter pushes the outer shell 1 to move against the elastic force of the outer shell reset spring 23. When the driving force of the clamping hook of the MPO adapter pushing the outer shell 1 to move disappears, the outer shell reset spring 23 drives the outer shell 1 to reset and cover the first clamping groove 21.

[0045] In a preferred embodiment, the clamping portion 11 is a clamping groove. As shown in Figure 6 The length L1 of the clamping portion 11 is greater than the cross-sectional length L2 of the second clamping hook 71 extending into the clamping portion 11. The clamping groove and the second clamping portion 11 are arranged to be clamped, which is good in stability. At the same time, the length of the clamping portion 11 is greater than the cross-sectional length of the second clamping hook 71 extending into the clamping portion 11, so that the outer shell 1 can move relative to the push-pull piece 7.

[0046] In a preferred embodiment, the push-pull piece 7 is integrally arranged with the tail cover 8. The integrally arranged push-pull piece 7 and tail cover 8 make the structure of the MPO connector simple. A dust cover 9 is arranged on the end of the inner housing 2 close to the ferrule 3.

[0047] In a preferred embodiment, the surface of the releasing part 72 is outwardly convexly provided with a convex part 73, and a plurality of convex parts 73 are distributed along the length direction of the push-pull piece 7, so that the friction between the hand of the user and the releasing part 72 can be increased.

[0048] The working principle of the utility model;

[0049] When the push-pull piece 7 is assembled, the outer shell 1 is moved backward, so that the clamping groove of the outer shell 1 is in position correspondence with the avoiding cavity 52; then the push-pull piece 7 is inserted, the second clamping hook 71 of the push-pull piece 7 is in contact with the inner wall of the outer shell 1, the two second clamping hooks 71 are contracted, and the second clamping hook 71 is inserted into the clamping groove of the outer shell 1 and then reset; the avoiding cavity 52 provides a deformation activity space for the second clamping hook 71; then the outer shell 1 is driven to reset, and the second clamping hook 71 is accommodated between the rear shell body 5 and the outer shell 1; the accommodating cavity 51 limits the second clamping hook 71 from separating from the outer shell 1.

[0050] When the push-pull piece 7 is disassembled, the push-pull piece 7 is moved backward, so that the outer shell 1 is moved backward, the clamping groove of the outer shell 1 is in position correspondence with the avoiding cavity 52; then the releasing part 72 is pressed, so that the two second clamping hooks 71 are deformed and separated from the clamping groove of the outer shell 1.

[0051] When the MPO connector is inserted, the MPO connector is aligned with the MPO adapter, the MPO connector is pushed by the push-pull piece 7 to move close to the MPO adapter; the clamping hook of the MPO adapter moves close to the first guide slope 221; under the guidance of the first guide slope 221, the clamping hook of the MPO adapter swings outward and is in position correspondence with the outer shell 1; as the MPO connector continues to be inserted, the clamping hook of the MPO adapter pushes the outer shell 1 to move relative to the inner housing 2 and the push-pull piece 7 to open the first clamping groove 21; as the MPO connector continues to be inserted, the clamping hook of the MPO adapter is dislocated from the first guide slope 221, the clamping hook of the MPO adapter is reset and clamped in the first clamping groove 21; the acting force of the clamping hook of the MPO adapter on the outer shell 1 disappears, the outer shell 1 is reset by the reset spring 23 to cover the first clamping groove 21, and the clamping hook of the MPO adapter is blocked from being separated from the first clamping groove 21 by the outer shell 1, so that the clamping hook of the MPO adapter is locked in the first clamping groove 21.

[0052] When pulling out the MPO connector, the push-pull piece 7 is moved backward, the push-pull piece 7 drives the shell 1 to move backward, the first clamping groove 21 is opened, the shell 1 is dislocated with the clamping hook of the MPO adapter; as the push-pull piece 7 continues to pull out, the clamping hook of the MPO adapter contacts the second guide slope 222, under the guidance of the second guide slope 222, the clamping hook of the MPO adapter swings outward and escapes from the first clamping groove 21; as the push-pull piece 7 continues to pull out, the clamping hook of the MPO adapter is dislocated with the second guide slope 222, the clamping hook of the MPO adapter resets and separates from the first clamping groove 21; the MPO connector separates from the MPO adapter.

[0053] In this specification, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0054] In the description of the specification, the description of the terms "preferred embodiment", "further embodiment", "other embodiment" or "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0055] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An MPO connector, comprising a housing, an inner casing and a push-pull piece, the housing is sleeved on the inner casing, the housing is movably arranged relative to the inner casing to open or cover a first clamping slot of the inner casing, the push-pull piece is connected with the housing for driving the housing to move, characterized in that: The shell is provided with a clamping portion; the push-pull piece comprises a second clamping hook and a release portion, the second clamping hook is in movable abutment with the clamping portion, and the release portion drives the second clamping hook to move for separating the second clamping hook from the clamping portion.

2. The MPO connector of claim 1, characterized in that: The shell is arranged outside the second clamping hook, the second clamping hook is embedded in the shell and cooperates with the clamping portion.

3. The MPO connector of claim 2, characterized in that: The second clamping hook is connected with the release portion, and the release portion is a flexible release portion.

4. The MPO connector of claim 3, characterized in that: The second clamping hook is outwardly protrudingly formed from the side wall of the push-pull piece; when the release portion is deformed under stress, the second clamping hook is swung inwardly to separate from the shell.

5. The MPO connector of claim 1, wherein: A plurality of protruding portions are outwardly protrudingly arranged on the surface of the release portion and are spaced apart along the length direction of the push-pull piece.

6. The MPO connector of claim 1, wherein: The clamping portion is a clamping groove, and the length of the clamping portion is greater than the cross-sectional length of the second clamping hook extending into the clamping portion.

7. The MPO connector of claim 1, wherein: The inner shell body is provided with an outwardly protruding guide portion, the guide portion is located on one side of the first clamping groove, and the guide portion is used for guiding the cooperation of the first clamping groove and the clamping hook of the MPO adapter; the guide portion comprises a first guide inclined surface and a second guide inclined surface, and the second guide inclined surface is located between the first guide inclined surface and the first clamping groove; the first guide inclined surface is outwardly and obliquely arranged along the length direction of the inner shell body; and the second guide inclined surface is inwardly and obliquely arranged along the length direction of the inner shell body.

8. The MPO connector of claim 1, wherein: An outer shell return spring is arranged between the outer shell and the inner shell body along the movable direction of the outer shell.

9. The MPO connector of claim 1, wherein: The MPO connector further comprises a ferrule, a guide pin base, a rear shell body, a compression ring and a tail sleeve; the inner shell body is sleeved on the ferrule, the guide pin base is arranged at the rear end of the ferrule, the rear shell body is arranged at the rear end of the guide pin base and connected with the inner shell body, a spring is arranged between the guide pin base and the rear shell body, the compression ring is arranged at the rear end of the rear shell body and connected with the rear shell body, the tail sleeve and the push-pull piece are sleeved on the compression ring, and an optical fiber is connected with the guide pin base through the tail sleeve, the push-pull piece, the compression ring and the rear shell body; and the push-pull piece is integrally arranged with the tail sleeve.

10. The MPO connector of claim 9, characterized in that: The second clamping hook is accommodated between the rear shell body and the outer shell; an accommodation cavity and an avoiding cavity are arranged between the rear shell body and the outer shell; the radial length of the accommodation cavity is less than the radial length of the second clamping hook, and the radial length of the avoiding cavity is greater than the radial length of the second clamping hook.

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