CN112230355A

CN112230355A - Optical connector

Info

Publication number: CN112230355A
Application number: CN202011034622.8A
Authority: CN
Inventors: 胡健; 李秀鹏; 王春鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-01-15
Anticipated expiration: 2040-09-27
Also published as: CN112230355B

Abstract

An optical connector, comprising: a poling assembly having at least one projection; the shell assembly is sleeved on the outer side of the pipe penetrating assembly and is provided with a first channel for the pipe penetrating assembly to pass through along a first direction; the shell assembly is also provided with a first limiting structure, the first limiting structure is provided with a limiting surface and a positioning surface, and the limiting surface is used for abutting against the end surface of the protrusion and limiting the pipe penetrating assembly along a second direction opposite to the first direction after the pipe penetrating assembly rotates relative to the shell assembly; the locating surface is used for abutting against the surface of the bulge and is used for limiting the pipe penetrating component and the shell component along the circumferential direction of the pipe penetrating component. This optical connector sets up first limit structure at casing subassembly, and after the relative casing subassembly of poling subassembly is rotatory, utilize first limit structure and the protruding butt relation between of formation to the poling subassembly on the casing subassembly spacing, can reduce this optical connector's the equipment degree of difficulty to promote on-the-spot packaging efficiency.

Description

Optical connector

Technical Field

The application relates to the technical field of optical cable connection, in particular to an optical connector.

Background

Communication optical cables are generally arranged in a laying mode in long-distance pipeline engineering. The air-blowing optical cable laying method has the characteristics of small occupied resource, high deployment speed, simple expansion and the like, and is widely applied to the scenes of distribution and service sections in the Optical Distribution Network (ODN).

Currently, optical cables are spliced by a fiber-melting method or an FMC (field outable connector) field assembly method. However, the fusion fiber connection mode needs the help of professional equipment; the FMC connector has more parts, the installation process is more complicated, and the construction efficiency is seriously influenced.

Therefore, it is desirable to provide a connector that can be assembled quickly.

Disclosure of Invention

The present application provides an optical connector, and more particularly, to an optical connector that can be threaded into an air-blown microtube and quickly assembled after the threading.

The application provides an optical connector, this optical connector includes poling subassembly and the casing subassembly of cover establishing in the poling subassembly outside, and wherein, the poling subassembly has at least one arch, and the casing subassembly has first passageway and first limit structure. In order to more clearly describe the relationship between the feedthrough assembly and the housing assembly, it is provided that one of the opposite ends of the housing assembly is a head end and the other end is a tail end. It should be understood that the head end and tail end are relative concepts herein. In addition, the tail-to-head direction of the shell assembly forms a first direction, and the head-to-tail direction of the shell assembly forms a second direction opposite to the first direction. Specifically describing the optical connector in combination with the above definition and the assembling process between the ferrule assembly and the housing assembly, the ferrule assembly may protrude from the tail end of the housing assembly through the first channel in the first direction to the head end of the housing assembly; when the pipe penetrating component rotates relative to the shell component, the pipe penetrating component is moved along a second direction opposite to the first direction until the pipe penetrating component moves to a certain position, and the limiting surface of the first limiting structure is abutted against at least one raised end surface of the pipe penetrating component so as to prevent the pipe penetrating component from being separated from the first channel from the tail end of the pipe penetrating component along the second direction. Meanwhile, the positioning surface of the first limiting structure is abutted against the surface of at least one protrusion, so that the pipe penetrating component and the shell component are prevented from rotating along the circumferential direction of the pipe penetrating component.

The optical connector is provided with a first channel in the shell assembly for the pipe penetrating assembly to pass through, and the first channel can meet the sleeving requirement between the pipe penetrating assembly and the shell assembly. Simultaneously, this optical connector sets up first limit structure in the casing subassembly, and the butt relation between the spacing face through this first limit structure and the rotatory back poling subassembly on the protruding terminal surface forms spacing along the second direction to the poling subassembly, and simultaneously, the butt relation between the locating surface through this first limit structure and the poling subassembly protruding surface forms spacing to the circumference of poling subassembly. In other words, after the tube penetrating component in the optical connector is rotationally pushed into the first limiting structure of the shell component, the shell component can realize the positioning of the tube penetrating component along the circumferential direction and the second direction of the tube penetrating component. It is worth noting that the matching relation between the protrusion and the first limiting structure between the pipe penetrating component and the shell component can simplify the connection structure between the pipe penetrating component and the shell component in the optical connector, and can reduce the assembly difficulty of the optical connector, thereby improving the field assembly efficiency.

In a possible implementation when specifically setting the structure of the poling assembly, the poling assembly includes a relatively fixed ferrule and a ferrule tail handle, wherein the ferrule has a fiber core through hole, the ferrule tail handle has an optical cable mounting hole, and an axial line of the fiber core through hole coincides with an axial line of the optical cable mounting hole. When the tube penetrating assembly is applied to connecting the optical cable, the optical cable is arranged in the optical cable mounting hole of the inserting core tail handle, and the fiber core of the optical cable extends to one end, away from the inserting core tail handle, of the inserting core through the fiber core through hole. It is noted that the at least one protrusion in the above description is disposed outside the ferrule tail shank, and the protrusion direction of each of the at least one protrusion is perpendicular to the extension direction of the ferrule tail shank. It should be understood that the outside of the stem insert tail handle as referred to herein is defined relative to the cable mounting hole provided in the interior of the stem insert tail handle. In order to effectively protect the ferrule and prevent the insertion end of the ferrule, which is away from the ferrule tail handle, from being damaged during the pipe penetrating operation of the ferrule, a protection member, such as a dust cap, can be arranged on the surface of the ferrule.

When the protrusions on the ferrule tail handle are specifically arranged, one protrusion, two protrusions or other protrusions can be arranged on the ferrule tail handle because the number of the protrusions is at least one. In order to clearly summarize the number of the protrusions arranged on the ferrule tail handle, the number of the protrusions arranged on the ferrule tail handle is defined as n, and n is an integer greater than 1. It is noted that, the position where n bulges are defined here forms the limiting section of the ferrule tail handle. It should be understood that, since the housing assembly needs to satisfy the function of passing the pipe penetrating assembly, corresponding to the structure of the ferrule tail handle, the housing assembly has a through hole, and the hole wall of the through hole has n through grooves, and the n through grooves and the through hole cooperate to form a first channel matched with the limiting section on the ferrule tail handle in shape. Similarly, in order to satisfy the axial limit function of the shell assembly when moving along the second direction and in order to satisfy the circumferential limit function of the shell assembly along the circumference of the tube penetrating assembly, the hole wall of the through hole is provided with m limit grooves, m is an integer greater than or equal to n, and the n limit grooves in the m limit grooves are matched with the through hole to form a first limit structure matched with the limit section of the ferrule tail handle. Here, the opening of each spacing groove in the m spacing grooves faces the head end of the shell assembly, and at least one spacing groove in the m spacing grooves is a half groove and has a groove bottom, and the groove bottom of the half groove forms a spacing surface used for abutting against the n raised end surfaces on the mortise tail handle, and the spacing surface exerts an axial spacing function. In addition, the lateral wall cooperation of n spacing grooves in the m spacing grooves forms the locating surface that is used for with n bellied surfaces butt on the lock pin caudal peduncle, and this locating surface plays the spacing function of circumference. Illustratively, when the number n of protrusions is 4, the number m of the stopper grooves may be 4 or other integers greater than 4. Here, it is explained that the number m of the limiting grooves is 4, and the 4 limiting grooves may be formed by 2 half grooves and 2 through grooves (here, the through grooves in the limiting grooves and the through grooves forming the first channel play different roles), or may be formed by only 4 half grooves, and may be specifically set as required. Because the groove bottom of the half groove is used as a limiting surface, only the number of the half grooves is required to be not less than 1. Of course, when the number m of the limiting grooves is 5, 4 limiting grooves are selected to be matched with the through holes to form the first limiting structure.

Because the number and the arrangement form of the bulges on the tail handle of the ferrule have various possibilities, the section of the limiting section has various possibilities in the direction vertical to the axial lead of the ferrule. Illustratively, when the number n of the bulges on the tail handle of the ferrule is an integer greater than or equal to 3, the cross section of the limiting section can be a c-polygon corresponding to the number of the bulges in the direction perpendicular to the axial lead of the ferrule, wherein c is an integer greater than or equal to 3. For example, when the number of the protrusions on the tail handle of the ferrule is 4, the cross section of the limiting section is 4-sided polygon.

When specifically setting up housing assembly's structure, housing assembly includes base, tail cover group and elastic component, and wherein, tail cover group is exemplary including inside casing and tail cover, and this inside casing forms the second passageway with the cooperation of tail cover, is equipped with the portion of blockking in the second passageway, and the base have with poling subassembly complex first passageway. The base is arranged in the containing space formed by one end of the second channel, the elastic piece is abutted between the base and the blocking part, and a second limiting structure is arranged between the tail sleeve set and the base. Specifically, the second limiting structure is used for fixing the base and the tail sleeve group along the circumferential direction and the first direction of the base. Illustratively, the second limiting structure is a key groove structure which can prevent the base and the tail sleeve from moving relatively along the circumferential direction of the base. In a specific embodiment, the key groove structure comprises at least one protruding rib arranged on the base and sliding grooves arranged on the tail sleeve group and corresponding to the protruding ribs one to one. In every protruding muscle and the spout of each one-to-one correspondence, protruding muscle includes direction section and protruding section, and the spout includes the first slip section that corresponds with the direction section and the first slip that corresponds with protruding section.

When the base moves relative to the tail sleeve group along the second direction, the convex section of the convex rib firstly enters the first sliding section of the sliding chute from the opening of the first sliding section; after the convex section moves for a corresponding distance, the convex section and the guide section move at the first sliding section simultaneously; then, the protruding section slides to the second sliding section, and at the same time, only the guide section exists in the first sliding section. It should be noted here that, after the protruding section of the protruding rib is embedded into the second sliding section, the elastic member abutting against the base and the blocking portion is in a compressed energy storage state, and if an external force is released, the elastic member provides a reverse thrust along the first direction for the ferrule. Because along the circumference direction of base 11, the size of protruding section is greater than the size of guide section, and after protruding section got into the second slip section, if move the base along the first direction opposite with the second direction, protruding section towards the first butt face of guide section one side and the second butt face butt of first slip section towards second slip section one side, protruding section can't slide to first slip section from the second slip section along the first direction. Here, the abutting relationship between the second abutting surface of the tail sleeve group and the first abutting surface of the base forms a limit to the base in the first direction. If the base is continuously pushed along the second direction after the convex section is embedded into the second sliding section, the convex section can continuously slide in the second sliding section along the second direction, and the elastic part is continuously compressed in the process until the set maximum displacement position is reached.

In addition, in order to facilitate the embedding of the protruding ribs into the sliding grooves corresponding to the protruding ribs one to one, a first guide surface can be arranged on one side of the protruding section, which deviates from the guide section, and meanwhile, a second guide surface corresponding to the first guide surface is arranged at the opening of the tail sleeve group.

In particular arrangements of the optical connector, a fastener may also be provided such that the fastener cooperates with the housing assembly to define the position of the feedthrough assembly in the first direction. Illustratively, the fastener is a shell, and a key groove structure and a buckle structure are arranged between the shell and the shell assembly, wherein the key groove structure is used for fixing the shell and the shell assembly along the axial direction of the ferrule; the buckle structure is used for fixing the shell and the shell assembly along the circumferential direction of the inserting core. Because the poling subassembly needs the cover to be established in the shell inside, then the shell is equipped with the installation through-hole. When the size of the installation through hole of the shell is set, the size of the installation through hole can be set to be smaller than the size of an external circle formed by the protrusion of the spacing section of the ferrule tail handle and be larger than the outer diameter of the dustproof cap, so that the dustproof cap is ensured not to be detached in the air blowing and field installation processes.

Description of the drawings:

fig. 1 is a schematic structural diagram of an optical connector provided in an embodiment of the present application;

FIG. 2 is an exploded view of the structure of FIG. 1;

FIG. 3 is a schematic structural view of the feedthrough assembly of FIG. 2;

FIG. 4 is a cross-sectional view at plane M of FIG. 3;

FIG. 5 is a schematic structural view of the stem of the ferrule of FIG. 3;

FIG. 6 is a schematic structural diagram of the base in FIG. 2;

FIG. 7 is a diagram showing the relationship between the ferrule tail handle of FIG. 5 and the base of FIG. 6;

FIG. 8 is a schematic view of another structure of the base in FIG. 2;

FIG. 9 is an assembled view of the housing assembly of FIG. 2;

FIG. 10 is a cross-sectional view at plane N of FIG. 9;

FIG. 11 is a schematic view of the assembly of the base and the first housing of FIG. 9;

FIG. 12 is a schematic view of an optical connector assembly provided in an embodiment of the present application;

FIG. 13 is a schematic view of an optical connector assembly provided in an embodiment of the present application;

FIG. 14 is a schematic view of an optical connector assembly provided in an embodiment of the present application;

FIG. 15 is a schematic structural view of the housing of FIG. 2;

FIG. 16 is a schematic view of an optical connector assembly provided in an embodiment of the present application;

FIG. 17 is a cross-sectional view of FIG. 16;

description of the drawings: 01-an optical connector; 1-a pipe penetrating component; 11-a ferrule; 12-a ferrule tail handle; 121-projection; 13-a dust cap; 2-a housing; 21-mounting a through hole; 3-a housing assembly; 31-a base; 311-through groove; 312-a limiting groove; 32-an elastic member; 33-tail set; 331-inner frame; 332-tail sleeve; 4-optical cable.

Detailed Description

First, an application scenario of the present application is introduced: in the field of Optical Distribution Networks (ODNs), in order to reduce the construction difficulty and facilitate subsequent maintenance, an air blowing method may be used to lay an optical cable quickly. In a specific air blowing duct, the air blowing method uses an external air blowing device to provide blowing force and advancing power, blows the optical cable to a designated place, and then fusion splices the pigtails in a field fusion manner, or splices the optical cable in a field assembly manner using an FMC (field movable connector). When the field welding mode is adopted, special fiber melting equipment needs to be carried, and the requirement on the technical level of constructors is high; when an FMC on-site assembling mode is adopted, the number of FMC structural parts is large, the installation steps are complex, and the on-site construction efficiency is low.

Based on the application scenarios, the embodiments of the present application provide an optical connector, and particularly provide an optical connector that can be threaded into an air-blown micro-tube and quickly assembled after being threaded.

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.

The terminology used in the following examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

The structure shown in fig. 1 provides an optical connector 01 according to an embodiment of the present application, where the optical connector 01 includes a ferrule assembly 1, an LC-type housing 2, and a housing assembly 3, where the ferrule assembly 1 is connected to an optical cable 4, and the housing 2 serves as a fastener for mating with the housing assembly 3. Under the blowing of the external air blowing equipment, the tube penetrating assembly 1 can drive the optical cable 4 to move in the conveying pipeline until a preset position is reached. It should be noted that the shape of the housing 2 may also be other shapes such as SC type, which is only shown by LC type here, and the specific structure may be changed according to the requirement, which is not described herein again.

Figure 2 is an exploded schematic view of the arrangement shown in figure 1, the feedthrough assembly 1 comprising a ferrule 11 and a ferrule shank 12 as in the arrangement shown in figure 2. Specifically, the end of the ferrule 11 facing away from the ferrule shank 12 is used for connection to other devices, and the material from which the ferrule 11 is made may illustratively be selected from ceramics. Furthermore, for the purpose of protecting the ferrule 11, a dust cap 13 is also provided in the feedthrough assembly 1, as shown in particular in fig. 2. When the above-mentioned tube penetrating assembly 1 is applied to air blowing, the dust cap 13 will move together with the ferrule 11, the ferrule tail 12 and the optical cable 4 in the conveying pipeline until reaching the preset position. It should be understood that the dust cap 13 may be replaced with other protection members such as a protection film; or, when the cleaning condition in the conveying pipeline is high, the protection part may not be even arranged in the pipe penetrating assembly 1, and the protection part can be specifically arranged according to the requirement, which is not described herein again.

The structure of the housing 2 and the housing assembly 3 is also specifically shown in fig. 2, wherein the housing assembly 3 comprises a base 31, an elastic member 32 and a tail sleeve group 33, and the elastic member 32 is shown in a spring structure. It should be noted that, in fig. 2, the tail sleeve group 33 in the housing assembly 3 specifically includes an inner frame 331 and a tail sleeve 332, and the tail sleeve 332 serves to laterally protect the optical cable 4, but the tail sleeve 332 may not be provided. Regarding the relationship between the inner frame 331 and the tail sleeve 332, structurally, the inner frame 331 and the tail sleeve 332 in the tail sleeve group 33 may be an integral structure or a split structure. When the inner frame 331 and the tail sleeve 332 are of a split structure, the inner frame 331 and the tail sleeve 332 can be fixed by adopting a bonding or clamping structure; from the aspect of preparation materials, the preparation materials of the inner frame 331 and the tail sleeve 332 may be the same or different, and may be specifically designed according to requirements, and are not described herein again. Of course, when the material for preparing the tail sleeve 332 is rubber, the tail sleeve 332 made of rubber can play a better lateral protection role for the optical cable 4 because the rubber is soft in texture.

Fig. 3 is a schematic structural view of the tube threading assembly 1 and the optical cable 4 of fig. 2, and fig. 4 is a cross-sectional view at plane M of fig. 3. It should be understood that the ferrule 11 is not identified in fig. 3 because the dust cap 13 and the ferrule shank 12 completely cover the ferrule 11. Referring to fig. 4 in conjunction with the structure of fig. 3, the ferrule tail 12 has a plug hole through which the ferrule 11 is connected to the ferrule tail 12. It should be noted that, since the structure shown in fig. 4 has the end of the ferrule 11 facing the ferrule tail 12 filled with the plug hole, the structure of the plug hole is not shown in the form of a reference numeral. Illustratively, the ferrule 11 is an interference fit with the ferrule shank 12. It should be noted that, when the ferrule 11 and the ferrule tail 12 are in interference fit, the ferrule 11 and the ferrule tail 12 are equivalently formed as a whole. In other words, the position between the ferrule tail 12 and the ferrule 11 is fixed in the axial direction of the ferrule 11, and at the same time, the position between the ferrule tail 12 and the ferrule 11 is fixed in the circumferential direction of the ferrule 11.

With continued reference to the configuration shown in FIG. 4, the ferrule 11 has a core passage A and the ferrule shank 12 has a cable mounting bore B. After the insertion core 11 and the insertion core tail handle 12 are assembled, the axis of the fiber core through hole A coincides with the axis of the optical cable mounting hole B, the optical cable 4 is arranged in the optical cable mounting hole B, and the fiber core of the optical cable 4 extends from the fiber core through hole A to the end face of one side of the insertion core 11, which is far away from the insertion core tail handle 12.

Specifically, the relationship between the insertion holes in the ferrule tail handle 12 and the optical cable mounting holes B in fig. 4 is described, the insertion holes and the optical cable mounting holes B are arranged along the extending direction of the ferrule tail handle 12, the radial aperture of the insertion holes is larger than that of the optical cable mounting holes B, and a step-shaped structure is formed between the insertion holes and the optical cable mounting holes B. When the ferrule 11 is assembled with the ferrule tail handle 12, one side surface of the ferrule 11 facing the ferrule tail handle 12 abuts against one side surface of the stepped structure located in the plug hole.

Fig. 5 is a schematic structural view of the ferrule tail 12 shown in fig. 3 and 4, and in the structure shown in fig. 5, the ferrule tail 12 is generally cylindrical, and the cylindrical ferrule tail 12 has four protrusions 121. It should be understood that only three protrusions 121 are shown in fig. 5 here due to the placement of the structures in the drawings. Taking one protrusion 121 as an example, the protrusion 121 is a part between dotted lines in fig. 5, and the protrusion direction of each protrusion 121 is perpendicular to the extending direction of the ferrule tail 12. As shown in fig. 5, the four protrusions 121 are uniformly arranged along the circumferential direction of the ferrule tail 121, and of course, the arrangement of the plurality of protrusions 121 is not limited to circumferential arrangement, and the specific arrangement is not described herein again. It is specified that the four protrusions 121 are located at the position of the limiting section O of the ferrule tail 12, and the limiting section O is a quadrangle (process chamfer is omitted here). Of course, the number of projections 121 provided on each ferrule shank 12 is not limited to the above number.

In addition, the end of the ferrule tail 12 for plugging with the ferrule 11 is provided with notches S, and fig. 5 shows that the number of the notches S is 2. It should be understood that when the ferrule tail 12 is inserted into the ferrule 11, the two notches S can change the radial dimension of the end of the ferrule tail 12 to facilitate the insertion between the ferrule tail 12 and the ferrule 11. Of course, the number of the notches S may be changed as required, or the notches S may not be provided when the setting dimension between the ferrule tail 12 and the ferrule 11 is appropriate.

Fig. 6 shows a base 31 shown in fig. 2, and the base 31 and the ferrule tail 12 cooperate to achieve the function of limiting the housing assembly 3 to the penetration assembly 1. Corresponding to the structure of the limiting section O shown in fig. 5, as shown in fig. 6, the base 31 is provided with a through hole, and the side wall of the through hole has four through slots 311, and the through hole and the four through slots 311 cooperate to form a first channel which is matched with the limiting section O in shape and can be passed through by the ferrule tail handle 12 along a first direction (shown in a direction a). As shown in particular in fig. 6, the first channel is a rectangular channel as shown in fig. 6. As shown in fig. 7, each projection 121 is disposed within the through slot 311 as the feedthrough assembly 1 passes through the first channel. It is noted that, since the through-groove 311 is filled with the protrusion 121 in fig. 7, the through-groove is not identified here.

Referring to fig. 8 with reference to the structure shown in fig. 7, the sidewall of the through hole is further provided with four limiting grooves 312, and the four limiting grooves 312 and the through hole cooperate to form a first limiting structure. Specifically, the first limit structure includes a circumferential limit structure that is in shape fit with the limit section O for limiting the ferrule tail 12 and an axial limit structure in a second direction (shown as direction b). The second direction here is a direction opposite to the first direction, and both the directions a and b are directions in which the axis of the ferrule 11 extends. The limiting grooves 312 are clearly identified, please continue to refer to the structure shown in fig. 8, where the bottom of each limiting groove 312 is shown as a black block, wherein the bottoms of the four limiting grooves 312 cooperate to form a limiting surface, the limiting surface serves as an axial limiting structure, the side surfaces of the four limiting grooves 312 cooperate to form a positioning surface, and the positioning surface and the shape of the limiting section O are adapted to serve as a circumferential limiting structure.

Referring to the structure shown in fig. 8, the number of the limiting grooves 312 of the first limiting structure in fig. 8 is four, and each of the limiting grooves 312 is a half-groove, in other words, each of the four limiting grooves 312 has a groove bottom, and the groove bottoms of the four limiting grooves 312 cooperate to form a limiting surface. Of course, some of the four retaining grooves 312 may be through grooves. Illustratively, 1 of the four retaining grooves 312 is a through groove (the through groove here plays a different role from the through groove 311 forming the first channel in terms of effectiveness) and 3 half grooves. It should be noted that the number of the through slots and the half slots in the four limiting slots 312 is not limited to the above combination, and may be changed according to the requirement, which is not described herein again. However, when the through grooves and the half grooves are arranged, the number of the half grooves is required to be not less than 1, so that the groove bottom of the half groove is utilized to form a limiting surface.

In addition, the number of the limiting grooves 312 of the first limiting structure can be an integer greater than four, and illustratively, the first limiting structure includes 5 limiting grooves 312, and when the first limiting structure is used for limiting the

ferrule tail

12, 4 limiting grooves 312 are used. Of course, the number of the limiting grooves 312 in the first limiting structure is not limited to the above examples, and may be modified as required, and will not be described herein again.

When the ferrule tail 12 is assembled with respect to the base 31, the ferrule tail 12 can pass through the base 31 from the direction a in fig. 6 through the first channel, and the specific process is as follows:

when the limiting section O of the ferrule tail handle 12 shown in fig. 5 contacts with the rear end face of the base 31 shown in fig. 6, the optical cable 4 is slightly twisted to drive the ferrule tail handle 12 to rotate, and meanwhile, a certain thrust in the direction a is kept, so that the limiting section O of the ferrule tail handle 12 enters the first channel of the base 31; when the limiting section O of the ferrule tail 12 passes through the first channel of the base 31, the ferrule tail 12 can be rotated by a certain angle relative to the base 31 (specifically, according to the relative position of the limiting section O and the limiting groove 312); thereafter, moving the ferrule tail 12 in a second direction (shown in direction b) opposite to direction a as shown in fig. 8, the four protrusions 121 on the stop segment O enter the four stop grooves 312, respectively. Because the cooperation forms the locating surface between the lateral wall of four spacing grooves 312, and the appearance matching of locating surface and spacing section O, based on this, after arch 121 on the spacing section O got into spacing groove 312, the locating surface that four spacing grooves 312 formed carried out circumference spacing to lock pin caudal peduncle 12 to can prevent that lock pin caudal peduncle 12 from relative base 31 along the circumference of lock pin caudal peduncle 12 from rotatory. When the position-limiting section O of the ferrule tail 12 moves to the position-limiting surface as shown in fig. 8, the position-limiting surface forms an axial position limitation on the ferrule tail 12 to prevent the ferrule tail 12 from coming out of the base 31 in the direction b. It should be understood that, since the ferrule tail 12 and the ferrule 11 are connected to form a whole, the positioning of the ferrule tail 12 by the base 31 is the positioning of the base 31 on the ferrule penetrating assembly 1.

The optical connector 01 provided by the embodiment of the present application is provided with a first limiting structure formed by a through hole and four limiting grooves 312 in the base 31, and the limiting surface and the positioning surface of the first limiting structure and the abutting relation between the protrusions 121 on the rotary rear ferrule tail handle 12 form the limiting of the penetrating pipe assembly 1. In other words, after the tube penetrating component 1 in the optical connector 01 is rotated by the first limiting structure of the rotating push-in base 31, the positioning of the tube penetrating component 1 along the circumferential direction and the direction b of the tube penetrating component 1 by the tail sleeve component 3 can be realized. It is worth noting that the matching relationship between the tube penetrating component 1 and the housing component 3 can simplify the connection structure between the tube penetrating component 1 and the housing component 3 in the optical connector 01, and can reduce the assembly difficulty of the optical connector 01, and can improve the assembly efficiency on site.

Fig. 9 is a structural view of the housing assembly 3 of fig. 2 after assembly, and fig. 10 is a sectional view taken along plane N of fig. 9. The structural relationship of the base 31 and the spring member 32 and tail sleeve set 33 shown in fig. 6 will be described with reference to fig. 9 and 10. The tail sleeve group 33 has a second channel having an accommodating space a and a stopper at one end thereof, and the stopper forms a bottom surface H of the accommodating space a. Accommodation space A is arranged in to base 31 and elastic component 32, and elastic component 32 supports and locates between base 31 and accommodation space A's bottom surface H, is equipped with second limit structure between base 31 and tail cover group 33, and second limit structure is used for fixing base 31 and tail cover group 33 along base 31's circumferential direction and direction a. It should be noted that the housing assembly 3 provided in the embodiment of the present application may be preassembled, that is, the base 31, the elastic member 32 and the tail sleeve set 33 are assembled before reaching the installation site. It should be understood that the pre-assembly form of the housing assembly 3 can reduce the number of parts for assembling the optical connector 01 provided by the embodiment of the present application in the field and can simplify the assembling steps of the entire optical connector 01, so that the assembling efficiency of the optical connector 01 can be improved.

Fig. 11 is a schematic structural diagram of the inner frame 331 of the base 31 in fig. 9 and 10 and the tail sleeve group 33 in fig. 9. In the structure shown in fig. 11, the base 31 is provided with two protruding ribs P, and the inner frame 331 is provided with two sliding grooves Q corresponding to the structure of the base 31, wherein each pair of one-to-one corresponding protruding rib P and sliding groove Q forms a key slot structure, i.e. a second limiting structure. It should be noted that the number of the key slot structures between the base 31 and the inner frame 331 is not limited to that shown in fig. 11, and may be set to one or other numbers according to requirements, which is not described herein again. Further, due to the angular relationship, only one pair of the projecting rib P and the sliding groove Q corresponding to each other is identified in fig. 11.

With continued reference to the structure shown in fig. 11, when the assembly operation of the base 31 and the inner frame 331 is performed, the protruding ribs P of the base 31 can be inserted into the sliding slots Q of the tail sleeve group 33 corresponding to the base. It should be understood that the key slot structure can realize the positioning between the base 31 and the tail sleeve group 33 along the circumferential direction of the base 31, and avoid the mutual movement between the two.

With continued reference to the structure shown in fig. 11, each protruding rib P in the above-mentioned key slot structure specifically includes a guiding section P1 and a protruding section P2, and each sliding slot Q includes a first sliding section Q1 corresponding to the guiding section P1 and a second sliding section Q2 corresponding to the protruding section P2. Here, the portions are separated by broken lines for clarity of illustration, and the specific separation position between the portions is not limited thereto.

When the base 31 is installed in the direction b with respect to the inner frame 331, the example of a pair of one-to-one corresponding protruding ribs P and sliding grooves Q is specifically described: the convex section P2 of the convex rib P firstly enters the first sliding section Q1 from the opening of the first sliding section Q1; after moving by the corresponding distance, the convex section P2 moves at the same time as the guide section P1 at the first sliding section Q1; then, the convex section P2 slides to the second sliding section Q2, and at the same time, only the guide section P1 exists in the first sliding section Q1. When the protruding section P2 is inserted into the second sliding section Q2, the elastic element 32 abutting between the base 31 and the bottom surface H in fig. 6 is in a compressed energy storage state, and if the external force is released, the elastic element 32 does not provide the pushing force along the direction a without the ferrule 11. It should be understood that, since the size of the protruding section P2 is larger than that of the guiding section P1 in the circumferential direction of the base 31, when the protruding section P2 enters the second sliding section Q2, if the base 31 is moved in the direction a, the first abutting surface X of the protruding section P2 facing the guiding section P1 will abut against the second abutting surface Y of the first sliding section Q1 facing the second sliding section Q2, so that the protruding section P2 cannot slide from the second sliding section Q2 to the first sliding section Q1 in the direction a. Here, the second contact surface Y of the tail sleeve group 33 forms a stopper for the base 31 in the direction a. At this time, the installation operation of the base 31 and the inner frame 331 is completed, and if the base 31 is pushed further in the direction b, the protruding section P2 can slide further in the second sliding section Q2 in the direction b, and the elastic element 32 is compressed continuously in the process until the set maximum displacement is reached.

With continued reference to the structure shown in fig. 11, in order to facilitate the protrusion rib P to be inserted into the sliding slot Q, a first guiding surface E may be disposed on a side of the protrusion section P2 away from the guiding section P1, and a second guiding surface F corresponding to the first guiding surface E may be disposed at the opening of the inner frame 331.

Now, an example of a state in which the optical connector 01 provided in the embodiment of the present application is constructed and assembled in the field will be described:

with the structure shown in fig. 12, after the housing assembly 3 is assembled at the service segment, the poling assembly 1 can be threaded into the housing assembly 3 from the tail end of the housing assembly 3 through the first channel of the base 31 in the direction a; after the pipe penetrating component 1 penetrates out of the shell component 3, the pipe penetrating component 1 can be rotated; thereafter, pulling the pipelining assembly 1 in the direction b in the configuration shown in figure 13; when the assembly of the pipe penetrating component 1 and the shell component 3 is completed, the structure as shown in fig. 14 is formed; the housing 2 shown in fig. 15 is then assembled with the housing assembly 3 shown in fig. 14, and after the assembly is completed, the structure of the optical connector 01 shown in fig. 16 is formed.

It is noted here that the housing 2 has a mounting through hole 21, and the size of the mounting through hole 21 is larger than that of the dust cap 13 in fig. 13 and smaller than the circumscribed circle size formed by the protrusion 121 in the position-limiting section O of the ferrule tail 12. Fig. 17 is a sectional view of fig. 16, and in combination with the structure shown in fig. 15 and fig. 16 and fig. 17, when the assembly of the housing 2 and the housing assembly 3 is completed, the inner surface L of the housing 2 abuts against the end surface of the ferrule tail 12 on the side facing the ferrule 11. The size setting can ensure that the dust cap 13 does not need to be detached in the air blowing and field installation processes, and if the optical connector 01 provided by the application needs to be used, the dust cap 13 can be used after being pulled out.

Specifically, the connection relationship between the housing 2 and the housing assembly 3 is described, and a key groove structure and a snap structure (not labeled in the form of serial numbers) are arranged between the housing 2 and the housing assembly 3, and the housing 2 and the housing assembly 3 are positioned in the circumferential direction of the ferrule 11 through the key groove structure, and are positioned and fixed in the axial direction of the ferrule 11 through the snap structure. It should be noted that the key slot structure and the snap structure between the housing 2 and the shell assembly 3 are not limited to the structures shown in the drawings, and may be modified as required, and are not described herein again.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An optical connector, comprising:

a poling assembly having at least one projection;

the shell assembly is sleeved on the outer side of the pipe penetrating assembly and provided with a first channel for the pipe penetrating assembly to pass through along a first direction; the shell assembly is also provided with a first limiting structure, the first limiting structure is provided with a limiting surface and a positioning surface, and the limiting surface is used for being abutted against the end surface of the at least one protrusion so as to limit the pipe penetrating assembly along a second direction opposite to the first direction after the pipe penetrating assembly rotates relative to the shell assembly; the positioning surface is used for being abutted against the surface of the at least one protrusion so as to limit the pipe penetrating assembly and the shell assembly along the circumferential direction of the pipe penetrating assembly.

2. The optical connector of claim 1, wherein the feedthrough assembly includes a ferrule and a ferrule tail stem, the ferrule being secured to the ferrule tail stem, and the ferrule having a core passage hole; the core inserting tail handle is provided with an optical cable mounting hole, the axial lead of the optical cable mounting hole is overlapped with the axial lead of the fiber core through hole, the protrusions are arranged on the outer side of the core inserting tail handle, and the protrusion direction of each protrusion in the at least one protrusion is perpendicular to the extending direction of the core inserting tail handle.

3. The optical connector according to claim 2, wherein the number of the projections is n, n being an integer of 1 or more; the n bulges form a limiting section of the ferrule tail handle;

the shell assembly is provided with a through hole, the wall of the through hole is provided with n through grooves and m limiting grooves, and the through hole and the n through grooves are matched to form the first channel matched with the limiting section in shape; the m is an integer which is more than or equal to the n, the through hole is matched with n limiting grooves in the m limiting grooves to form the first limiting structure matched with the limiting section in shape, at least one limiting groove in the m limiting grooves is provided with a groove bottom, and the groove bottom forms the limiting surface; the side walls of n limiting grooves in the m limiting grooves are matched to form the positioning surface.

4. The optical connector according to claim 3, wherein the stopper section is a c-edge shape corresponding to the number of the protrusions in a direction perpendicular to the axial line of the ferrule, and c is an integer of 3 or more.

5. The optical connector according to claim 3 or 4, wherein the housing assembly includes a base and a tail sleeve group, the tail sleeve group has a second channel, and the tail sleeve group is formed with a receiving space for receiving the base at one end of the second channel; a second limiting structure is arranged between the tail sleeve group and the base and used for fixing the base and the tail sleeve group along the circumferential direction of the base and the first direction; the base is provided with the first channel.

6. The optical connector of claim 5, wherein the second limiting structure comprises a key groove structure disposed between the base and the tail sleeve, and the key groove structure comprises at least one protruding rib disposed on the base and a sliding groove disposed on the tail sleeve and corresponding to the protruding rib.

7. The optical connector of claim 6, wherein each of the at least one pair of one-to-one corresponding raised ribs and runners has:

the protruding rib comprises a guide section and a protruding section, the size of the protruding section is larger than that of the guide section along the circumferential direction of the base, and a first abutting surface is formed on one side, facing the guide section, of the protruding section;

the sliding groove comprises a first sliding section matched with the guide section and a second sliding section matched with the protruding section; the tail sleeve set is formed with the opening that supplies protruding muscle embedding on the one side that first slip section deviates from the second slip section, and the tail sleeve set is in first slip section one side towards the second slip section forms be used for with the second butt face butt of first butt face for follow first direction is injectd the base with the relative position of tail sleeve set.

8. The optical connector of claim 7, wherein a side of the protruding section facing away from the guiding section is provided with a first guiding surface, and the tail sleeve set is provided with a second guiding surface corresponding to the first guiding surface at the opening, so that the protruding section rib is embedded into the first sliding section.

9. The optical connector of any one of claims 5-8, wherein the housing assembly further comprises a resilient member having a mounting channel through which the feedthrough assembly passes; and a blocking part is arranged in the second channel of the tail sleeve group, and the elastic part is arranged in the installation space and abutted between the base and the blocking part and used for providing axial thrust along the axial lead direction of the ferrule when the ferrules are butted.

10. The optical connector of any one of claims 2-9, further comprising a fastener that cooperates with the housing assembly to restrain the feedthrough assembly in a first direction.

11. The optical connector of claim 10, wherein the fastener is a housing having a mounting through hole; one side of the insertion core deviating from the insertion core tail handle is provided with a detachable dustproof cap, the radial dimension of the dustproof cap is smaller than the inner diameter of the installation through hole of the shell, and the radial dimension of the dustproof cap is smaller than the diameter of the protruding circumcircle of the limiting section.

12. The optical connector of claim 11, wherein the mounting through-hole aperture of the housing is smaller than a diameter of a circumscribed circle of an end surface of the ferrule on a side facing away from the ferrule tail shank.

13. The optical connector according to claim 11 or 12, wherein a key groove structure and a snap structure are provided between the housing and the housing assembly, the key groove structure being configured to fix the housing and the housing assembly in an axial direction of the ferrule; the buckling structure is used for fixing the shell and the shell assembly along the circumferential direction of the inserting core.