CN218601515U

CN218601515U - MPO connector

Info

Publication number: CN218601515U
Application number: CN202222399046.8U
Authority: CN
Inventors: 张业; 韩绍友
Original assignee: Shenzhen Xiayu Precision Parts Co ltd
Current assignee: Shenzhen Xiayu Precision Parts Co ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-03-10
Anticipated expiration: 2032-09-08

Abstract

An embodiment of the utility model provides a MPO connector, including interior casing and lock pin subassembly, the stop part, crimping stay tube and optical cable, the stop part includes backstop main part and apron, backstop main part afterbody leads to groove length direction evagination at the perpendicular to and becomes backstop portion, run through the logical groove that the backstop main part just seted up the notch in a side of backstop main part around being equipped with in the backstop main part, it is formed with the caulking groove still to lead to the groove to correspond the recess, the stay tube is spliced in proper order along circumference by two slice at least transversal concatenation of personally submitting C shape and forms, the preceding tip of every concatenation piece still is provided with the boss, the stay tube is put into logical inslot and with boss embedding caulking groove and by corresponding equipment to the apron in the backstop main part spacing and be fixed in on the stop part from the notch direction. The utility model discloses a set up the stop part and the stay tube of components of a whole that can function independently structure, can conveniently assemble stop part and stay tube again after the lock pin subassembly that has been connected with optic fibre grinds, make things convenient for product equipment and later maintenance.

Description

MPO connector

Technical Field

The embodiment of the utility model provides a relate to fiber connector technical field, especially relate to a MPO connector.

Background

MPO connectors are one type of fiber optic connector. The conventional MPO connector comprises an inner housing which is through from front to back, a ferrule assembly which is assembled in an inner cavity of the inner housing and the front end of which extends out of a front end opening of the inner housing, a stop member of which the front end is inserted into the inner cavity of the inner housing from a rear end opening of the inner housing and the rear part is protruded outwards in a direction perpendicular to the axial direction to form a stop part, a support tube connected to the stop part of the stop member, and an optical cable, wherein an optical fiber of which the front end is provided with a predetermined length and the outer skin is stripped and is exposed passes through the support tube and the stop member to be connected with the ferrule assembly.

The above MPO connector still has certain limitations in practical use: when the MT insertion core needs to be ground, the MT insertion core is inserted into the grinding device for limiting and fixing, the stop piece and the support tube need to move along the optical cable to expose a certain length of optical fiber which is removed of the outer rubber layer and connected with the MT insertion core, and the exposed length of the optical fiber is the buffer length required by grinding of the MT insertion core and is used for ensuring that the grinding of the MT insertion core can be effectively carried out. However, since the support tube and the stop member of the MPO connector are integrally formed and the maximum inner diameter of the support tube is 4mm, only the optical cable with the diameter smaller than 4mm can pass through the support tube and the stop member, and the optical cable with the diameter larger than 4mm cannot pass through the support tube and the stop member, so that the optical fiber for buffering cannot be arranged between the MT ferrule and the optical cable with the large diameter, and the ferrule cannot be effectively ground.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem who solves provides a MPO connector, can make things convenient for the lock pin subassembly to grind.

In order to solve the technical problem, the embodiment of the utility model provides an adopt following technical scheme: the utility model provides a MPO connector, including the front and back interior casing that link up and assemble in the inner chamber and the front end of interior casing are certainly the lock pin subassembly that the front end opening of interior casing stretches out, the front end certainly the rear end opening of interior casing inserts stop member in the inner chamber of interior casing, connect in the stay tube and the optical cable of stop member afterbody, the skin that strips of the predetermined length of front end of optical cable and the optic fibre that exposes pass the stay tube and stop member and with the lock pin subassembly links to each other, the stop member includes backstop main part and apron, run through around being equipped with in the backstop main part just sets up the logical groove of notch in a side of backstop main part, backstop main part afterbody is perpendicular to lead to groove length direction evagination becomes backstop portion, the cell wall that leads to groove corresponding to backstop portion position department still corresponds sunken caulking groove that is formed, the apron corresponds the equipment in the backstop main part and covers at least the notch corresponds the district section of caulking groove, the stay tube is formed by the concatenation in proper order along circumference by two at least splice piece of personally submitting C shape, every the preceding tip of splice piece still is provided with the boss, put into from the direction notch of stay tube and put into and with the boss the equipment on the backstop groove the assembly is fixed in the backstop main part and by spacing on the backstop main part.

Furthermore, the cover plate covers the stopping main body, and the front end part of the cover plate is correspondingly inserted into the inner cavity of the inner shell so as to be limited and fixed on the stopping main body by the inner shell.

Further, the apron is the step plate form and includes preceding plate body, buckle from preceding plate body rear end edge and extend the connection plate body that forms and certainly the connection plate body end is buckled once more and is extended the back plate body that forms, when the apron is assembled on the backstop part, the outer panel of back plate body with the surface parallel and level of the corresponding side of backstop portion, the outer panel of connection plate body with the preceding terminal surface parallel and level of backstop portion.

Furthermore, first positioning convex parts are arranged between the caulking grooves on the two side groove walls of the through groove and the tail end opening of the through groove in a protruding mode in opposite directions, and first positioning concave parts which are correspondingly clamped with the first positioning convex parts are formed in the corresponding positions on the two sides of the cover plate in an inwards recessed mode respectively.

Furthermore, the groove walls on the two sides of the through groove are respectively provided with a second positioning concave part at the groove opening, and the corresponding positions on the two sides of the cover plate are respectively provided with a second positioning convex part which is correspondingly clamped with the second positioning concave part in a protruding mode.

Furthermore, a third positioning convex part is arranged on the outer side surface of the front part of the cover plate, and a third positioning concave part matched with the third positioning convex part in an inserting manner is correspondingly formed in a corresponding position on the inner cavity wall of the inner shell.

Furthermore, an inward concave arc surface matched with the cross section of the supporting tube in shape is formed at the tail of the cover plate, and when the cover plate is assembled on the stop main body, the inward concave arc surface is pressed against the outer surface of the supporting tube.

Further, the cover plate is fixed on the stopper body through a screw locking structure, a buckle fixing structure or a tabling fixing structure.

Furthermore, the backstop portion is still in near the front end the corresponding sunken and form the butt joint platform in notch both sides that lead to the groove, when the stay tube equipment to on the backstop portion, the lateral surface of boss with the top surface parallel and level of butt joint platform, back plate body internal surface corresponds to support and presses in butt joint platform top surface with on the lateral surface of boss.

Furthermore, the two opposite sides of one end, inserted into the inner cavity, of the stop part are respectively provided with an elastic cantilever, the tail end of each elastic cantilever is provided with an outwards-turned buckling part, and the position, corresponding to the buckling part, of the inner shell is provided with a buckling groove clamped with the buckling part.

By adopting the technical scheme, the embodiment of the utility model provides a following beneficial effect has at least: the embodiment of the utility model provides a through groove is led to through the design respectively in the backstop main part of stop part to with the stay tube design for forming by two piece at least splicing pieces circumference concatenation in proper order, and can conveniently splice again after the splicing piece surrounds optic fibre for whole from the notch put into the logical inslot of backstop main part together with optic fibre again, thereby the boss corresponds the embedding caulking groove and fixes a position the stay tube, corresponds to the lid by the apron again and closes the notch and fix the stay tube. Therefore, when the ferrule assembly connected with the optical fiber is ground, the stop part and the supporting tube can be firstly not assembled or the stop part and the supporting tube can be firstly detached, the optical fiber with the outer rubber stripped at the front end part of the optical cable has enough length to conveniently grind the ferrule assembly, and the stop part and the supporting tube are assembled after the ferrule assembly is ground, so that the product is convenient to assemble and maintain at a later stage. In addition, the supporting tubes with different inner diameters can be assembled by replacing splicing pieces with different specifications to adapt to optical cables with different diameters, so that the adaptability is wide, and the use cost can be effectively reduced.

Drawings

Fig. 1 is a schematic view of an alternative embodiment of the MPO connector of the present invention in an exploded configuration.

Fig. 2 is a schematic view of an alternative embodiment of the MPO connector of the present invention.

Fig. 3 is a schematic view of the construction of an alternative embodiment of the MPO connector of the present invention.

Fig. 4 is a schematic view of an alternative embodiment of the MPO connector according to the present invention, in which the optical fiber cable with the ferrule assembly attached is inserted into the stop body at the fiber position and the support tube is assembled.

Fig. 5 is a schematic structural view of the cover plate further assembled on the basis of the structure shown in fig. 4.

FIG. 6 is a schematic structural view of the inner housing and the crimp sleeve further assembled to the structure shown in FIG. 5.

Fig. 7 is a schematic cross-sectional view of an alternative embodiment of the MPO connector of the present invention with the fiber optic cable omitted and along a medial plane of the inner housing parallel to the plane of the slot.

Fig. 8 is a schematic cross-sectional view of an alternative embodiment of the MPO connector of the present invention with the fiber optic cable omitted and along a medial plane of the inner housing perpendicular to the plane of the slot.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the following illustrative embodiments and description are only intended to illustrate the present invention, and are not intended as a limitation of the present invention, and that features of the embodiments and examples may be combined with each other without conflict.

As shown in fig. 1-8, an optional embodiment of the present invention provides an MPO connector, including an inner housing 1 penetrating front and back, a ferrule assembly 2 assembled in an inner cavity 10 of the inner housing 1, a ferrule assembly 3 inserted into the inner cavity 10 of the inner housing 1 from a front end opening of the inner housing 1, a support tube 4 connected to a tail portion of the stop member 3, and an optical cable 5, wherein an optical fiber 51 exposed by peeling of a predetermined length of a front end of the optical cable 5 passes through the support tube 4 and the stop member 3 and is connected to the ferrule assembly 2, the stop member 3 includes a stop main body 32 and a cover plate 33, a through groove 321 penetrating the stop main body 32 from front to back and opening a side groove 322 on the stop main body 32 is provided on the stop main body 32, the tail portion of the stop main body 32 protrudes in a direction perpendicular to the through groove 321 to a stop portion 31, a recessed groove 34 is further formed at a position corresponding to the stop portion 31 of the support tube 321, the stop main body 33 is assembled on the cover plate 32 and covers at least the groove 322 and is formed by inserting the stop main body into the through a protrusion 42 along a circumferential direction, and the through a boss 42 is provided on the through the groove 34, and the groove 31, and the through a boss is provided on the through a boss 42.

The utility model discloses a lead to groove 321 is designed on the backstop main part 31 of stop part 3 respectively to with stay tube 4 design for forming by two piece at least splicing piece 41 circumference concatenation in proper order, and can conveniently splice again after encircleing optic fibre 5 splicing piece 41 and put into the logical groove 321 of backstop main part 31 for whole together with optic fibre 51 again, boss 42 corresponds to imbed in the caulking groove 34 and fixes a position stay tube 4, thereby correspond by apron 33 again and cover notch 322 and fix stay tube 4. Therefore, when the ferrule assembly 2 connected with the optical fiber is needed to be ground, the stop part 3 and the support tube 4 can be firstly not assembled or the stop part 3 and the support tube 4 can be firstly disassembled, the optical fiber 51 with the outer rubber layer stripped at the front end part of the optical cable 5 has enough length to conveniently grind the ferrule assembly 2, and the stop part 3 and the support tube 4 are assembled after the ferrule assembly 2 is ground, so that the product assembly and the later maintenance are convenient. In addition, the supporting tubes 4 with different inner diameters can be assembled by replacing the splicing pieces 41 with different specifications to be matched with the optical cables 5 with different diameters, the adaptability is wide, and the use cost can be effectively reduced.

In an optional embodiment of the present invention, as shown in fig. 1 to 5, the cover plate 33 covers the stopper body 32 and the front end of the cover plate 33 is correspondingly inserted into the inner cavity 10 of the inner housing 1 and is fixed on the stopper body 32 by the inner housing 1 in a limited manner. In this embodiment, the cover plate 33 covers the stopper body 32 and is assembled into the inner housing 1, and the housing wall in the inner cavity 10 of the inner housing 1 corresponding to the cover plate 33 presses the cover plate 33, so that the cover plate 33 is pressed against the stopper body 32 to complete the complete positioning of the stopper 3.

In an optional embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 5, the cover plate 33 is in a stepped plate shape and includes a front plate 37, a connecting plate 38 formed by bending and extending from a rear end edge of the front plate 37, and a rear plate 39 formed by bending and extending the end of the connecting plate 38 again, when the cover plate 33 is assembled on the stop part 3, an outer plate surface of the rear plate 39 is flush with an outer surface of the corresponding side of the stop part 31, and an outer plate surface of the connecting plate 38 is flush with a front end surface of the stop part 31. In this embodiment, by providing the connecting plate body 38 and the rear plate body 39 formed by bending and extending the end of the connecting plate body 38 again, when the cover plate 33 is assembled on the stopper main body 32, a cavity wall is formed between the connecting plate body 38 and the rear plate body 39 and the stopper portion 31 to install the boss 42, so that the boss 42 is completely positioned, and the assembling of the splicing piece 41 on the caulking groove 34 is facilitated.

In an optional embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 5, the stopping portion 31 is located near the front end and corresponding recessed portions on two sides of the notch of the through groove 321 to form a supporting platform 311, when the supporting tube 4 is assembled to the stopping portion 3, the outer side surface of the boss 42 is flush with the top surface of the supporting platform 311, and the inner surface of the rear plate 39 correspondingly abuts against the top surface of the supporting platform 311 and the outer side surface of the boss 42. In this embodiment, when the inner surface of the rear plate 39 is correspondingly pressed against the abutting table 311, the pre-positioning of the cover plate 33 on the stopping body 31 is completed, so as to facilitate the quick installation between the cover plate 33 and the stopping body 31.

In an optional embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 5, the two side groove walls of the through groove 321 are further provided with a first positioning protrusion 323 protruding oppositely between the embedding groove 34 and the tail end opening of the through groove 321, and the corresponding positions on the two sides of the cover plate 33 are respectively formed with a first positioning concave 331 corresponding to the first positioning protrusion 323. In this embodiment, the top of the insertion groove 34 is connected to the first positioning recess 331 protruding into the inner cavity 10, and the first positioning recess 331 and the first positioning protrusion 323 are cooperatively installed to reach the predetermined installation position of the cover plate 33 on the stopper main body 32, so that the cover plate 33 is accurately positioned on the stopper main body 32, and in addition, two first positioning recesses 331 and two first positioning protrusions 323 are respectively disposed on two sides of the cover plate 33, so that the cover plate 33 is circumferentially fixed on the stopper main body 32.

In an optional embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 5, the two side walls of the through groove 321 are further respectively provided with a second positioning concave portion 324 at the notch 322, and the corresponding positions at the two sides of the cover plate 33 are respectively protruded outwards to form a second positioning convex portion 332 correspondingly engaged with the second positioning concave portion 324. In this embodiment, the second positioning protrusion 332 and the second positioning recess 324 are cooperatively mounted, so as to further improve the accurate positioning of the cover plate 33 on the stopper main body 32, and in addition, the second positioning protrusion 332 and the second positioning recess 324 are both away from the first positioning protrusion 323 and the first positioning recess 331, so as to position the front and rear ends of the cover plate 33, and improve the stability of the cover plate 33 mounted on the stopper main body 32, so that the cover plate 33 is circumferentially fixed on the stopper main body 32 and is not easy to shake.

In an alternative embodiment of the present invention, as shown in fig. 1, 3 and 6, a third positioning protrusion 333 is disposed on an outer side surface of a front portion of the cover plate 33, and a corresponding recess at a corresponding position on an inner cavity wall of the inner housing 1 forms a third positioning recess 11 in insertion fit with the third positioning protrusion 333. In the present embodiment, the third positioning protrusion 333 is matched with the third positioning recess 11 to enhance the lateral pulling resistance of the stopper 3, and in addition, the third positioning protrusion 333 is matched with the third positioning recess 11 to relatively fix the cover plate 33 on the stopper body 32 in the direction perpendicular to the axial direction of the stopper body 32 when the cover plate 33 abuts on the stopper body 32.

In an optional embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 5 and fig. 6, an inner concave surface 334 adapted to the cross-sectional shape of the supporting tube 4 is further formed at the tail of the cover plate 33, and when the cover plate 33 is assembled on the stopping body 32, the inner concave surface 334 abuts against the outer surface of the supporting tube 4. In this embodiment, when the cover plate 33 is covered and installed on the main body, each splicing piece 41 is connected in the installation space formed by the inner concave arc surface 334 and the caulking groove 34, and the cover plate 33 presses and fixes each splicing piece 41 on the stopper main body 32, so that the cover plate 33 is connected by the matching of the inner concave arc surface 334 and the caulking groove 34, and the splicing pieces 41 are circumferentially fixed on the stopper main body 32.

In an alternative embodiment of the present invention, the cover plate 33 is fixed on the stopper body 32 by a screw locking structure, a snap fixing structure or a fitting fixing structure. In the embodiment shown in fig. 1, 5 and 6, the cover plate is assembled to the stopper body 32 by a snap-fit structure. In this embodiment, the cover plate 33 and the stopper body 32 are connected by the above-mentioned connection method, which is simple in structural design and convenient to install.

In an alternative embodiment of the present invention, as shown in fig. 1, 7 and 8, the number of the splicing pieces 41 is two and the two splicing pieces 41 are mounted on the caulking groove 34 and adjacently connected along the central axial surface of the stop member 3. In this embodiment, two splicing pieces 41 are semicircular structures and are mutually connected to assemble into a complete support tube 4, and when two splicing pieces 41 are symmetrically embedded in the caulking groove 34 and are connected along the middle axial surface of the stop member 3, the edges of the two splicing pieces 41 are abutted to the caulking grooves 34 at the left and right ends, so that the two splicing pieces 41 can bear the optical cable 5 with a larger diameter.

In an optional embodiment of the present invention, as shown in fig. 1 to 3, two opposite sides of one end of the stop member 3 inserted into the inner cavity 10 are both provided with an elastic cantilever 35, the end of the elastic cantilever 35 is provided with an outward-turned buckling portion 36, and the position of the inner shell 1 corresponding to the buckling portion 36 is provided with a buckling groove 12 buckled with the buckling portion 36. In this embodiment, the positioning between the stopper 3 and the inner housing 1 is completed by providing the engaging portion 36 and the engaging groove 12 which engage with each other.

In an optional embodiment of the present invention, as shown in fig. 5 and 6, the MPO connector further includes a crimping sleeve 6 connected to the supporting tube 4, a channel is provided in the crimping sleeve 6 for installing the optical cable 5, and the crimping sleeve 6 protects the inner optical cable 5 from being damaged. In this embodiment, the supporting tube 4 is provided with an external thread, the crimping sleeve 6 can be crimped on the external thread on the supporting tube 4 by using a tool pliers, and an internal thread is further provided in the crimping sleeve 6 at a position corresponding to the position where the optical cable 5 extends out from the supporting tube 4, and the internal thread is crimped on the outer rubber of the optical cable 5.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many changes without departing from the spirit and the scope of the invention as claimed.

Claims

1. The utility model provides a MPO connector, including the front and back interior casing that link up and assemble in the inner chamber of interior casing and front end are certainly the lock pin subassembly that the front end opening of interior casing stretches out, front end certainly the rear end opening of interior casing inserts stop member in the inner chamber of interior casing, connect in the stay tube and the optical cable of stop member afterbody, the optic fibre that the peel-off of the predetermined length of front end of optical cable exposes pass stay tube and stop member and with the lock pin subassembly links to each other, its characterized in that, the stop member includes backstop main part and apron, run through around being equipped with in the backstop main part just sets up the logical groove of notch in a side of backstop main part, backstop main part afterbody is at the perpendicular to lead to outside protruding into backstop portion of logical groove length direction, the cell wall that leads to the groove corresponding to backstop portion position department still corresponds sunken caulking groove that is formed, the apron correspond to assemble in the backstop main part and cover at least the notch corresponds the section of caulking groove, the stay tube is formed by the concatenation of at least two transversal C-shaped concatenation pieces along circumference in proper order, every the preceding tip of concatenation piece still is provided with boss, put into from the notch and the stay tube is put into from the notch the direction the apron is fixed in the boss by the boss on the assembly of backstop main part the boss.

2. The MPO connector of claim 1, wherein the cover covers the stop body and a front end of the cover is inserted into the interior of the inner housing and is held in place by the inner housing against the stop body.

3. The MPO connector according to claim 1, wherein the cover plate has a stepped plate shape and includes a front plate, a connecting plate bent and extended from a rear end edge of the front plate, and a rear plate bent and extended from an end of the connecting plate, wherein when the cover plate is assembled to the stopper, an outer plate surface of the rear plate is flush with an outer surface of the stopper on a corresponding side, and an outer plate surface of the connecting plate is flush with a front end surface of the stopper.

4. The MPO connector according to claim 1, 2 or 3, wherein the two side walls of the through groove are further provided with first positioning convex parts which are oppositely protruded between the caulking groove and the tail end opening of the through groove, and the corresponding positions on the two sides of the cover plate are respectively recessed inwards to form first positioning concave parts which are correspondingly engaged with the first positioning convex parts.

5. The MPO connector according to claim 1, 2 or 3, wherein the groove walls on both sides of the through groove are respectively provided with a second positioning concave portion at the groove opening, and second positioning convex portions which are correspondingly engaged with the second positioning concave portions are respectively formed by protruding outwards at corresponding positions on both sides of the cover plate.

6. The MPO connector of claim 1, 2 or 3, wherein the outer side surface of the front part of the cover plate is provided with a third positioning convex part, and a corresponding position on the inner cavity wall of the inner shell is correspondingly recessed to form a third positioning concave part which is matched with the third positioning convex part in an inserted manner.

7. The MPO connector of claim 1, 2 or 3, wherein the tail of the cover plate is further formed with a concave arc surface adapted to the cross-sectional shape of the support tube, and when the cover plate is assembled on the stopper body, the concave arc surface is pressed against the outer surface of the support tube.

8. The MPO connector of claim 1, wherein the cover plate is secured to the stop body by a screw locking feature or a snap-fit feature.

9. The MPO connector of claim 3, wherein the stopper is further recessed near the front end thereof on both sides of the slot of the through-slot to form an abutment, and when the support tube is assembled to the stopper, the outer side surface of the boss is flush with the top surface of the abutment, and the inner surface of the rear plate body is correspondingly pressed against the top surface of the abutment and the outer side surface of the boss.

10. The MPO connector according to claim 1, wherein the stopper is provided with elastic cantilevers at opposite sides of an end thereof inserted into the cavity, the elastic cantilevers are provided at ends thereof with snap portions turned outward, and the inner housing is provided with snap grooves for engaging with the snap portions at positions corresponding to the snap portions.