MPO connector

Abstract

The embodiment of the utility model provides an MPO connector. The MPO connector comprises an inner shell; the outer shell is arranged outside the inner shell in a sleeving manner; the front end of the stopper is inserted into the rear end part of the inner shell, and an inner guide hole is formed in the rear end surface of the stopper; the tail sheath is movably connected to the tail end of the stopper, the front end edge of the tail sheath laterally protrudes to form a flange, and a through groove and a guide groove are formed in the flange; the linkage piece comprises a base, connecting rods and a guide rod, the connecting rods and the guide rod integrally and convexly extend from the front end face of the base, at least two connecting rods are symmetrically arranged at the position, close to the edge, of the base at a preset interval, the guide rod is arranged in the middle of the base, and the linkage piece is assembled to the tail sheath from back to front. The connecting rod penetrates through the through groove in the flange and is connected with the shell, the guide rod correspondingly penetrates through the guide groove and is inserted into the inner guide hole, the guide rod and the guide groove are in clearance fit, and the guide rod and the inner guide hole are in clearance fit. The MPO connector provided by the utility model is convenient to disassemble and assemble, and can ensure that the shell can stably and smoothly slide back and forth.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to the technical field of optical fiber connectors, and particularly relates to an MPO connector. BACKGROUND

[0002] An existing MPO connector mainly comprises an inner shell, an outer shell movably sleeved on the outer part of the inner shell along the length direction of the MPO connector, a tail sheath movably connected to the tail end part of the inner shell along the length direction of the MPO connector, and a linkage movably connected to the outer shell and the tail sheath respectively, when the tail sheath moves away from the outer shell relative to the inner shell, the outer shell is synchronously moved through the linkage, so that the MPO connector can be conveniently disassembled from the adapter in the application environment with high installation density.

[0003] However, the inventor finds in the implementation that, since each linkage of the linkage is independently arranged, the linkages need to be assembled one by one, and the assembly efficiency is low, and when the disassembly operation is implemented, the synchronism of each linkage is difficult to guarantee when the outer shell is moved through the tail sheath, and the linkage lacks effective guiding structure and is easy to be inclined, which can easily lead to the unbalanced stress of the outer shell and the inclination of the outer shell, and further cause the contact friction between the outer shell and the inner shell to form a large frictional resistance, thereby affecting the smoothness of the movement of the outer shell. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the embodiment of the utility model is to provide an MPO connector which is more convenient to disassemble and assemble and can ensure that the outer shell can smoothly slide forward and backward.

[0005] In order to solve the above technical problem, the embodiment of the utility model provides the following technical scheme: an MPO connector, comprising:

[0006] an inner shell;

[0007] an outer shell movably sleeved on the outer part of the inner shell along the length direction of the MPO connector;

[0008] a stopper inserted into the rear end part of the inner shell, the rear end surface of the stopper is provided with an inner guide hole;

[0009] a tail sheath movably connected to the tail end part of the stopper, the front end edge of the tail sheath is laterally protruded to form a flange, the flange is provided with a through slot penetrating through the flange in the front-rear direction, and the flange is further provided with a guide slot coaxially and oppositely arranged with the inner guide hole; and

[0010] The relative two ends of the tail sheath correspond to the connecting members connected with the shell and the tail sheath respectively, the connecting member comprises a base and a connecting rod and a guide rod which are integrally protruded from the front end surface of the base, wherein the connecting rod is provided with at least two and symmetrically arranged at the edge of the base with a predetermined interval, the guide rod is arranged at the middle of the base, the connecting member is assembled from back to front on the tail sheath, the connecting rod passes through the through slot on the flange and is connected with the shell, and the guide rod passes through the guide slot and is inserted into the inner guide hole, and the gap fit is formed between the guide rod and the guide slot and between the guide rod and the inner guide hole.

[0011] Further, the part of the stopper exposed outside the inner shell is laterally protruded to form a boss which is abutted and positioned corresponding to the rear end surface of the inner shell, the inner guide hole is formed on the boss, and the boss is further provided with a first receiving slot corresponding to the position of the connecting rod for the connecting rod to pass through.

[0012] Further, the guide rod is a cylinder with a chamfered end, and the connecting rod is a rod body with a rounded rectangular cross section.

[0013] Further, the opposite sides of the front end edge of the tail sheath are symmetrically protruded to form a flange, each of the opposite ends of each flange is provided with a through slot, and the middle part is provided with a guide slot, the MPO connector is provided with a connecting member corresponding to each flange, and each connecting member is provided with a connecting rod at each end of the base, and the two connecting rods of the same connecting member pass through the two through slots of the same flange one by one.

[0014] Further, the opposite sides of the front end edge of the tail sheath are symmetrically protruded to form a flange, each of the opposite ends of each flange is provided with a through slot, and the middle part is provided with a guide slot, the connecting member of the base is annular and is correspondingly sleeved on the tail sheath, the base is provided with a connecting rod corresponding to each through slot and a guide rod corresponding to the guide slot.

[0015] Further, each connecting rod comprises a root part close to the base and a spring arm part opposite to the base, the inner side surfaces of the root part and the spring arm part are flush with each other, and the thickness of the root part is greater than that of the spring arm part, and the end of the spring arm part is provided with a barb for hooking and fitting with the hooking hole correspondingly arranged on the shell wall to prevent the connecting rod from being separated from the shell.

[0016] Further, the side wall of the spring arm part outward in the thickness direction of the MPO connector is a plane, and the hole wall corresponding to one side of the plane is parallel to the plane.

[0017] Further, the hooking hole is formed with a first opening adjacent to one side of the inner cavity of the shell, and the corresponding shell wall of the inner shell is further provided with a hook-avoiding groove corresponding to the first opening and capable of receiving the hook of the end of the elastic arm portion when the elastic arm portion is elastically deformed during assembly of the connecting rod to the shell.

[0018] Further, the shell wall of the shell is further provided with a hook-avoiding groove extending along the central axis of the hooking hole to the front end of the shell by a predetermined length, for accommodating the elastic arm portion of the connecting rod when the shell moves close to the tail sheath.

[0019] Further, the rear end edge of the inner shell is formed with a stop bar between the shell and the tail sheath for corresponding definition of the active stroke of the shell, and the stop bar is further provided with a second receiving groove corresponding to the connecting rod and penetrating through the stop bar at the position corresponding to the connecting rod, and the outer side wall of the second receiving groove forms a second opening.

[0020] After the above technical scheme is adopted, the utility model has at least the following beneficial effects: the utility model embodiment sets multiple connecting rods and guide rods on the base of the linkage member, each connecting rod is connected to the shell and the tail sheath, the guide rod is inserted into the inner guide hole on the rear end surface of the stopper fixedly inserted into the tail end of the inner shell, the guide rod and the guide groove and the inner guide hole are gap-fitted, the tail sheath and the linkage member can be guided to move relative to the inner shell in a certain direction, the tail sheath and the linkage member are prevented from being deflected, multiple connecting rods can be simultaneously disassembled, and the disassembly efficiency is improved. Moreover, multiple connecting rods are arranged on one base, the synchronism of the multiple connecting rods during unlocking of the MPO connector is ensured, the shell is balanced and is prevented from being deflected, the shell and the inner shell are prevented from being rubbed against each other, and the shell can be smoothly moved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a split structure schematic view of an optional embodiment of the MPO connector.

[0022] Figure 2 It is an assembly structure schematic view of an optional embodiment of the MPO connector.

[0023] Figure 3 It is a structure schematic view of the linkage member of an optional embodiment of the MPO connector.

[0024] Figure 4 It is a cross-sectional structure schematic view of an optional embodiment of the MPO connector parallel to the thickness direction of the MPO connector and passing through the central axis of one guide rod.

[0025] Figure 5 It is a cross-sectional structure schematic view of an optional embodiment of the MPO connector of the utility model parallel to the thickness direction of the MPO connector and through the symmetry plane of the connecting rod.

[0026] Figure 6 Is Figure 5 The local enlarged view of A part in the middle.

[0027] Figure 7 It is a cross-sectional structure schematic view of an optional embodiment of the MPO connector of the utility model through the central axis of the two guide rods. DETAILED DESCRIPTION

[0028] The application will be further described below in detail 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 utility model, and are not as a limitation on the utility model, and in the case of no conflict, the embodiments in the application and the features in the embodiments can be combined with each other.

[0029] As Figures 1-7 shown, an optional embodiment of the utility model provides an MPO connector, comprising:

[0030] Inner shell 1;

[0031] The outer shell 3 can be movably sleeved outside the inner shell 1 along the longitudinal direction of the MPO connector;

[0032] The stopper 5 is inserted into the rear end part of the inner shell 1, and the rear end face of the stopper 5 is provided with an inner guide hole 50;

[0033] The tail sheath 7 movably connected to the tail end part of the stopper 5, the front end edge side of the tail sheath 7 is laterally protruded to form a flange 70, the flange 70 is provided with a through slot 71 penetrating the flange 70 in front and back, and the flange 70 is also provided with a guide slot 72 coaxially opposite to the inner guide hole 50; and

[0034] The connecting member 9 corresponding to the outer shell 3 and the tail sheath 7 is respectively connected to the opposite ends, the connecting member 9 includes the base 90, the connecting rod 92 and the guide rod 94 integrally protruded from the front end face of the base 90, wherein the connecting rod 92 is provided with at least two and symmetrically arranged at the edge of the base 90 with a predetermined interval, the guide rod 94 is arranged in the middle of the base 90, the connecting member 9 is assembled from rear to front on the tail sheath 7, the connecting rod 92 passes through the through slot 71 on the flange 70 and is connected with the outer shell 3, and the guide rod 94 passes through the guide slot 72 and is inserted into the inner guide hole 50, and the gap fit is formed between the guide rod 94 and the guide slot 72 and between the guide rod 94 and the inner guide hole 50.

[0035] The utility model discloses an embodiment sets up multiple connecting rods 92 and guide rod 94 on the base 90 of linkage 9, and each connecting rod 92 is connected with the shell 3 and tail sheath 7, and the guide rod 94 is inserted into the inner guide hole 50 on the rear end face of stopper 5 fixedly inserted into the tail end of inner shell 1, and the guide rod 94 is matched with the guide slot 72 and the inner guide hole 50, which can effectively guide the directional movement of tail sheath 7 and linkage 9 relative to inner shell 1, and avoid the deflection of tail sheath 7 and linkage 9, and can realize the synchronous dismounting of multiple connecting rods 92, which can improve the dismounting efficiency. Moreover, multiple connecting rods 92 are arranged on one base 90, which can also help to ensure the synchronism of each connecting rod 92 during the unlocking process of MPO connector, so that the shell 3 can be balanced and will not be deflected, so that the shell 3 and the inner shell 1 will not form obvious frictional resistance, and the shell 3 can move smoothly.

[0036] In another optional embodiment of the utility model, as shown in Figure 1 The part of stopper 5 exposed outside inner shell 1 is laterally protruded to form a boss 52 abutting and positioning with the rear end face of inner shell 1, the inner guide hole 50 is formed on the boss 52, and the boss 52 is also provided with a first receiving groove 54 for the connecting rod 92 to pass through. This embodiment forms the boss 52 on the stopper 5, and forms the inner guide hole 50 on the boss 52, which can avoid the influence of inner guide hole 50 on the optical fiber and other components that need to pass through the inside of stopper 5 during the layout of MPO connector, and the first receiving groove 54 arranged on the boss 52 can accommodate the connecting rod 92, which can avoid the excessive protrusion of connecting rod 92 on stopper 5, and help to reduce the overall size of MPO connector.

[0037] In another optional embodiment of the utility model, as shown in Figure 1 And Figure 3 The guide rod 94 is a cylindrical body with chamfered end, and the connecting rod 92 is a rod body with rounded rectangular cross section. This embodiment designs the guide rod 94 as a cylindrical body with chamfered end, which can conveniently pass through the corresponding guide slot 72 and be inserted into the inner guide hole 50, and has high bending resistance, which can better ensure that linkage 9 will not be deformed and skewed to affect the movement of shell 3, and the connecting rod 92 adopts a rounded rectangular cross section, which is beneficial to the flat design of connecting rod 92 and the reduction of the overall thickness of MPO connector.

[0038] In another optional embodiment of the utility model, as shown in Figures 1-3As shown in the drawings, the opposite sides of the front end edge of the tail sheath 7 are symmetrically protruded to form a flange 70, the opposite ends of each flange 70 are respectively provided with a through slot 71, and the middle part is provided with a guide slot 72, the MPO connector is provided with a linkage 9 corresponding to each flange 70, and the two ends of the base 90 of each linkage 9 are respectively provided with a connecting rod 92, and the two connecting rods 92 of the same linkage 9 are respectively arranged through the two through slots 71 of the same flange 70. In this embodiment, two flanges 70 are symmetrically arranged at the front end of the tail sheath 7, the opposite ends of each flange 70 are respectively provided with a through slot 71, and the middle part is provided with a guide slot 72, and a linkage 9 is arranged corresponding to each stop boss 50, so that the linkage 9 is convenient to disassemble.

[0039] In another optional embodiment of the utility model, the opposite sides of the front end edge of the tail sheath 7 are symmetrically protruded to form a flange 70, the opposite ends of each flange 70 are respectively provided with a through slot 71, and the middle part is provided with a guide slot 72, the base 90 of the linkage 9 is annular and is correspondingly sleeved on the tail sheath 7, the base 90 is provided with a connecting rod 92 corresponding to each through slot 71 and a guide rod 94 corresponding to the guide slot 72. In this embodiment, the base 90 of the linkage 9 is designed to be annular, and only one base 90 is provided with a connecting rod 92 and a guide rod 94 corresponding to the through slot 71 and the guide slot 72 of the flange 70 respectively, so that the manufacturing is simpler, the overall disassembly is more convenient, and all the connecting rods 92 are driven by the same base 90, so that the synchronization is better.

[0040] In another optional embodiment of the utility model, as shown in the drawings, Figure 1 and Figure 2 As shown in the drawings, the through slot 71 is a notch slot arranged at the end of the flange 70. In this embodiment, the through slot 71 is designed as a notch slot, so that the connecting rod 92 is convenient to pass through.

[0041] In another optional embodiment of the utility model, as shown in the drawings, Figures 1-6As shown, each of the connecting rods 92 comprises a root portion 920 close to the base 90 and an elastic arm portion 922 away from the base 90, the inner side surfaces of the root portion 920 and the elastic arm portion 922 are flush with each other, and the thickness of the root portion 920 is greater than that of the elastic arm portion 922, and the end of the elastic arm portion 922 is provided with a barb 924 for hooking cooperation with the hooking hole 32 corresponding to the shell wall 30 of the shell 3 to prevent the connecting rod 92 from being separated from the shell 3. In the embodiment, the part of the connecting rod 92 away from the base 90 is designed as the elastic arm portion 922 with relatively small thickness, so that the elastic arm portion 922 has appropriate elasticity, and is convenient to enter the hooking hole 32 to complete the assembly by elastic deformation during the assembly process; the inner side surfaces of the root portion 920 and the elastic arm portion 922 are flush with each other, which is beneficial to prevent the connecting rod 92 from being hooked with the adjacent shell 3 or other components during movement; the barb 924 at the end of the elastic arm portion 922 cooperates with the hooking hole of the shell 3, so that the connecting rod 92 can be prevented from being separated from the shell 3.

[0042] In another optional embodiment of the utility model, as shown in the figure, Figures 1-6 The side wall of the elastic arm portion 922 outward in the MPO connector thickness direction is a plane, and the hole wall of the hooking hole 32 corresponding to one side of the plane is parallel to the plane. In the embodiment, the side wall of the elastic arm portion 922 outward in the MPO connector thickness direction and the corresponding side hole wall of the hooking hole 32 are designed as planes parallel to each other, which is beneficial to the sliding of the elastic arm portion 922 relative to the hooking hole 32.

[0043] In another optional embodiment of the utility model, as shown in the figure, Figure 1 , Figure 5 and Figure 6As shown, the hooking hole 32 is formed with a first opening 320 adjacent to one side of the inner cavity 34 of the shell 3, and the inner shell 1 is further provided with a clearance groove 14 on the corresponding shell wall, which is opposite to the first opening 320 during the assembly of the connecting rod 92 to the shell 3, and provides a corresponding accommodation for the barb 924 at the end of the elastic arm part 920 when the elastic arm part 920 is elastically deformed. In this embodiment, by forming the first opening 320 adjacent to one side of the inner cavity 34 of the shell 3 in the hooking hole 32, and further forming the clearance groove 14 on the shell wall of the inner shell 1, during the assembly of the connecting rod 92 to the shell 3, the barb 924 at the end of the elastic arm part 920 will cause the elastic arm part 920 to elastically deform under the counter-pushing action of the corresponding hole wall of the hooking hole 32, so that the barb 924 protrudes outward beyond the first opening 320, at this time, the clearance groove 14 will correspondingly accommodate the barb 924, avoiding interference between the barb 924 and the shell wall of the inner shell 1, making the assembly process more smooth; after assembly, the barb 924 is no longer counter-pushed by the hole wall of the hooking hole 32, and the elastic arm part 920 will be elastically reset, and the barb 924 can cooperate with the outer end surface of the one end opening of the hooking hole 32 to prevent the connecting rod 92 from being reversely withdrawn from the hooking hole 32. In specific implementation, the clearance groove 14 can be designed as an arc-shaped groove.

[0044] In another optional embodiment of the present application, as shown in Figure 1 , Figure 5 and Figure 6 , the shell wall 30 of the shell 3 is further provided with a clearance groove 36 which is in communication with the hooking hole 32 and extends along the central axis of the hooking hole 32 to the front end of the shell 3 by a predetermined length, and is used to accommodate the elastic arm part 920 of the connecting rod 92 when the shell 3 moves close to the tail sheath 7. In specific implementation, the clearance groove 36 can penetrate through the shell wall 30 of the shell 3 and be in communication with the inner cavity of the shell 3. The clearance groove 32 is formed on the shell 3 to accommodate the connecting rod 92, which can avoid the connecting rod 92 from protruding too much relative to the shell 3, effectively reducing the overall size of the MPO connector in the longitudinal direction; in addition, during the assembly of the MPO connector to the adapter, the shell 3 will not interfere with the connecting rod 92 when it is pushed backward by the adapter, ensuring smooth assembly.

[0045] In another optional embodiment of the present application, as shown in Figures 1-2As shown, the rear end edge of the inner shell 1 forms a stop strip 10 between the outer shell 3 and the tail sheath 7 for corresponding limited travel of the outer shell 3, and the stop strip 10 is further provided with a second receiving groove 12 corresponding to the position of the connecting rod 92 and penetrating through the stop strip 10 for the connecting rod 92 to pass through, and the outer side groove wall of the second receiving groove 12 forms a second opening 120. The present embodiment can effectively limit the travel of the outer shell 3 by providing the stop strip 10 on the inner shell 1, so as to avoid the outer shell 3 from completely falling off the inner shell 1, and the second receiving groove 12 on the stop strip 10 facilitates the connecting rod 92 to pass through and provides certain positioning and guiding effect, and the groove-shaped structure design is also convenient for forming; in addition, the second opening 120 can reduce the overall thickness of the MPO connector.

[0046] The embodiments of the utility model are described above in combination with the drawings, but the utility model is not limited to the specific embodiments described above, and the specific embodiments described above are only illustrative but not restrictive, and the ordinary skilled in the art can make many forms under the inspiration of the utility model without departing from the purpose of the utility model and the scope protected by the claims, and these all belong to the protection scope of the utility model.

Claims

1. A MPO connector, comprising: an inner housing; an outer housing movably sleeved outside the inner housing along a longitudinal direction of the MPO connector; a stopper inserted into a rear end portion of the inner housing; a tail sheath movably connected to a tail end portion of the stopper, a flange being formed on a lateral protrusion of a front end edge of the tail sheath, and a through slot being formed in the flange; and a linkage member corresponding to the outer housing and the tail sheath at opposite ends thereof; characterized in that an inner guide hole is formed on a rear end surface of the stopper, and a guide slot is formed on the flange coaxially opposite to the inner guide hole; the linkage member comprises a base and a connecting rod and a guide rod integrally protruding from a front end surface of the base, wherein the connecting rod is provided with at least two rods symmetrically arranged at a predetermined interval at an edge of the base, and the guide rod is arranged at a middle portion of the base, the linkage member is assembled from rear to front on the tail sheath, the connecting rod passes through the through slot on the flange and is connected to the outer housing, and the guide rod passes through the guide slot and is inserted into the inner guide hole, and the guide rod and the guide slot and the guide rod and the inner guide hole are all gap-fitted. A boss is formed on a lateral protrusion of a portion of the stopper exposed outside the inner housing, and the boss is in abutting position corresponding to a rear end surface of the inner housing, the inner guide hole is formed on the boss, and a first receiving slot is formed on the boss corresponding to a position of the connecting rod. The guide rod is a cylinder with a chamfered end, and the connecting rod is a rod body with a rounded rectangular cross section. Opposite sides of the front end edge of the tail sheath symmetrically protrude to form a flange, each of the flanges is provided with a through slot at opposite ends thereof and a guide slot at a middle portion thereof, the MPO connector is provided with one linkage member corresponding to each of the flanges, each of the linkage members is provided with one connecting rod at each end of the base thereof, and the two connecting rods of the same linkage member pass through the two through slots of the same flange one by one. Opposite sides of the front end edge of the tail sheath symmetrically protrude to form a flange, each of the flanges is provided with a through slot at opposite ends thereof and a guide slot at a middle portion thereof, the base of the linkage member is annular and is correspondingly sleeved on the tail sheath, the base is provided with one connecting rod corresponding to each of the through slots and is provided with the guide rod corresponding to the guide slot. Each of the connecting rods comprises a root portion close to the base and a spring arm portion opposite to the base, inner side surfaces of the root portion and the spring arm portion are flush with each other, a thickness of the root portion is greater than a thickness of the spring arm portion, and a barb is formed on an end of the spring arm portion to be hooked and fitted with a hooking hole formed on a wall of the outer housing to prevent the connecting rod from being separated from the outer housing. A side wall of the spring arm portion outward in a thickness direction of the MPO connector is a plane, and a hole wall of the hooking hole corresponding to one side of the plane is parallel to the plane. ​ 2. The MPO connector of claim 1, wherein, ​ 3. The MPO connector of claim 1, wherein, ​ 4. The MPO connector of claim 1, wherein, ​ 5. The MPO connector of claim 1, wherein, ​ 6. The MPO connector of any of claims 1-5, wherein, ​ 7. The MPO connector of claim 6, wherein, ​ 8. The MPO connector of claim 6, wherein, The hooking hole is adjacent to one side of the inner cavity of the shell to form a first opening through the inner cavity of the shell, and the corresponding shell wall of the inner shell is also provided with a hook-avoiding groove corresponding to the first opening to accommodate the hook of the end of the elastic arm part when the elastic arm part is elastically deformed during the assembly of the connecting rod to the shell.

9. The MPO connector of claim 7, wherein, The shell wall of the shell is also provided with a hook-avoiding groove corresponding to the hooking hole and extending along the central axis of the hooking hole to the front end of the shell by a predetermined length, for accommodating the elastic arm part of the connecting rod when the shell moves close to the tail sheath.

10. The MPO connector of claim 1, wherein, The rear end of the inner shell forms a stop bar between the shell and the tail sheath for corresponding to define the active stroke of the shell, and the stop bar is also provided with a second accommodating groove corresponding to the position of the connecting rod and penetrating the stop bar for the connecting rod to pass through, and the outer side wall of the second accommodating groove forms a second opening.

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