CN112230356A - Optical connector - Google Patents

Abstract

An optical connector comprises a pipe penetrating assembly, wherein the pipe penetrating assembly comprises a relatively fixed inserting core and an inserting core tail handle, the inserting core is provided with a fiber core through hole, the inserting core tail handle is provided with an optical cable mounting hole, and the axis of the fiber core through hole is coincident with the axis of the optical cable mounting hole. The optical connector further comprises a first shell component and a second shell component which are sleeved outside the pipe penetrating component. The optical connector further comprises a limiting piece, wherein the limiting piece is matched with the first shell assembly and the second shell assembly, and the opposite penetrating pipe assembly is fixed along the axial lead direction and the circumferential direction of the inserting core. After the pipe penetrating assembly penetrates through the conveying pipeline through air blowing operation, the limiting piece and the pipe penetrating assembly can be connected so as to fix the limiting piece and the pipe penetrating assembly along the circumferential direction and the axial direction of the inserting core; and then assembling the limiting member with the first shell assembly and the second shell assembly to complete the assembling operation of the optical connector provided by the present application. The optical connector can reduce the assembly difficulty and improve the field assembly efficiency.

Description

Optical connector

Technical Field

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

Background

In a common way of laying a pipeline communication optical cable, the air-blowing optical cable laying is widely applied to the distribution of an Optical Distribution Network (ODN) and a service segment scene by virtue of the characteristics of small occupied resources, high deployment speed, simple expansion and the like. After the optical cable is blown, currently, the connection with the equipment is usually realized in a field-mounted mode of FMC (field-mounted connector) in the construction operation.

However, the FMC connector has many parts, complicated installation steps, and low construction efficiency.

Disclosure of Invention

The present application provides an optical connector, and in particular, an optical connector that can be quickly assembled on site in an air blowing or other scene.

The application provides an optical connector, this optical connector includes the poling subassembly, and this poling subassembly includes relatively fixed lock pin and lock pin caudal peduncle, and wherein, the lock pin has the fibre core through hole, and the lock pin caudal peduncle has the optical cable mounting hole, and the axial lead of fibre core through hole coincides with the axial lead of optical cable mounting hole. When the pipe penetrating assembly is connected with an 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. The optical connector further comprises a first shell assembly, a second shell assembly and a limiting piece. The first shell assembly and the second shell assembly are sleeved on the outer side of the pipe penetrating assembly, the limiting piece is matched with the first shell assembly and the second shell assembly, and the limiting piece is used for fixing the pipe penetrating assembly along the axial lead direction and the circumferential direction of the inserting core.

After the pipe penetrating assembly penetrates through the conveying pipeline through air blowing operation, the limiting piece and the pipe penetrating assembly can be connected, so that the limiting piece and the pipe penetrating assembly are fixed along the circumferential direction and the axial direction of the inserting core, and equivalently, the limiting piece and the pipe penetrating assembly form a whole; and then assembling the limiting piece with the first shell assembly and the second shell assembly to complete the assembling operation of the optical connector provided by the application. It should be understood that, after the first housing assembly, the second housing assembly and the limiting member are assembled, the matching relationship between the first housing assembly, the second housing assembly and the limiting member determines the motion state of the limiting member relative to the first housing assembly and the second housing assembly, and since the limiting member and the pipe penetrating assembly are assembled to form a whole, when the pipe penetrating assembly is connected with an external device, the pipe penetrating assembly drives the limiting member to move relative to the first housing assembly and the second housing assembly. By the analysis, the optical connector provided by the application can reduce the assembly difficulty and improve the field assembly efficiency.

When the structure of the pipe penetrating component and the limiting part is specifically arranged, in one possible implementation mode, a groove and a limiting section are formed on the pipe penetrating component, so that the limiting part is respectively clamped in the groove and the limiting section. Specifically, the clamping structure of the limiting part and the groove can limit the relative position between the limiting part and the pipe penetrating component along the axial lead direction of the ferrule, and the clamping structure between the limiting part and the limiting section can fix the relative position between the limiting part and the pipe penetrating component along the circumferential direction of the ferrule. It should be understood that, after the limiting member is installed on the pipe penetrating assembly, the relative position between the limiting member and the pipe penetrating assembly along the axial line direction and the circumferential direction of the ferrule is fixed. Based on this, after the relative positions of the limiting member, the first shell assembly and the second shell assembly are determined, the relative positions of the pipe penetrating assembly, the first shell assembly and the second shell assembly are also determined.

Looking at the structure of the pipe assembly specifically, the ferrule can comprise a main body part and an inserting part, a step-shaped structure is formed between the inserting part and the main body part, and the radial size of the inserting part is smaller than that of the main body part. As for the insertion core tail handle, the insertion core tail handle is provided with an insertion hole, and the insertion core tail handle is inserted with the insertion part through the insertion hole. For example, the plug hole and the plug part may be in an interference fit. At the moment, the tail handle of the insertion core and the insertion core are equivalent to form a whole; in other words, the ferrule tail handle does not move relative to the ferrule along the circumferential direction of the ferrule and the axial lead direction of the ferrule, and the interference fit between the ferrule tail handle and the ferrule can improve the connection stability of the whole optical connector.

It is worth noting that the covering area of the insertion tail handle in the insertion part of the ferrule can be adjusted by setting the depth of the insertion hole in the ferrule tail handle. When the groove and the limiting section structure of the pipe penetrating component are specifically arranged, the inserting part can be arranged to be incapable of being completely covered by the inserting core tail handle, namely, a gap is formed between the inserting core tail handle and the main body part. At the moment, the part of the insertion part positioned in the gap is matched with the main body part and the insertion core tail handle to form a groove. As for the arrangement position of the limiting section, the limiting section can be formed on the tail handle of the insertion core independently. Specifically, the structure of the limiting section on the stem of the ferrule is described, and in a possible implementation manner, the cross section of the limiting section in a plane perpendicular to the axial lead direction of the ferrule may be a polygon, which is equivalent to that the whole limiting section is a polygonal columnar structure. In another possible implementation mode, the cross section of the limiting section is long waist-shaped in a plane perpendicular to the axial lead direction of the ferrule. When the limiting section in this mode is prepared, a mode of cutting the cylindrical insertion core tail handle on two opposite sides of the limiting section part can be adopted.

To control the radial maximum dimension of the feedthrough assembly, a first plane can be set perpendicular to the axial centerline of the ferrule, and the perpendicular projection of the ferrule can overlay the perpendicular projection of the ferrule tail shank. In combination with the specific structure of the ferrule and the ferrule tail handle, since the radial dimension of the ferrule body is larger than that of the insertion part, the vertical projection of the body can be realized to cover the vertical projection of the ferrule tail handle in the first plane perpendicular to the axial lead of the ferrule. In other words, when the tube assembly is viewed through the end of the ferrule facing away from the ferrule shank in the direction of the axial centerline of the ferrule, portions of the ferrule shank do not exceed or approach the radial dimension of the body portion of the ferrule. Therefore, the structure matching form greatly reduces the outer diameter size of the pipe penetrating component and enhances the adaptability of the pipe penetrating component to air blowing pipelines with different diameters.

In addition, the insertion core is provided with an insertion head part for realizing the insertion function at one end of the main body part, which is far away from the insertion part. In order to form an effective protection for the plug head, a protection element may be provided on the surface of the plug head. For example, the protection member may be a dust cap or a protective film covering the surface of the plug head. It is noted that a step-like structure is also formed between the plug part and the main body part, and the radial dimension of the plug part is smaller than that of the main body part. When a protective member such as a dust cap is provided on the plug head portion, the dust cap is fitted over the plug head portion. Because the step-shaped structure formed between the plug head part and the main body part can reduce the size of the dustproof cap exceeding the main body part and even achieve the effect that the dustproof cap does not exceed the main body part, the radial size of the whole pipe penetrating assembly can be reduced, and the pipe penetrating assembly can meet the requirement of micro-pipe air blowing. It should be understood that when the radial dimension of the dust cap is smaller than the radial dimension of the main body, the pipe penetrating component provided with the dust cap can be directly installed with the limiting piece, the first shell component and the second shell component, and the dust cap does not need to be detached in the process, so that the plug head part of the plug core is prevented from being polluted in the installation process.

When the structure of the limiting part is specifically arranged, one possible implementation manner is that the limiting part is provided with a bayonet, and the limiting part is laterally clamped into the pipe penetrating assembly through the bayonet. Specifically, the limiting part is clamped with the groove of the pipe penetrating component through one end of the bayonet, and is clamped with the limiting section of the pipe penetrating component through the other end of the bayonet. It should be noted that, in order to prevent the limiting member from falling off from the pipe penetrating assembly, at least one limiting protrusion set may be disposed on the edge of the bayonet of the limiting member. The limiting member may be made of a material having a certain elastic deformation capability, such as a plastic member. For example, the limiting protrusion set may be only arranged at a position corresponding to the notch, or the protrusion set may be only arranged at a position corresponding to the limiting section; of course, the first limiting protrusion group may be disposed at a position where the bayonet corresponds to the groove, and the second limiting protrusion group may be disposed at a position where the bayonet corresponds to the limiting section. It is noted that the number of the limiting protrusion sets can be changed according to requirements. As for the number of the protrusions in the above-mentioned limit protrusion group, the first limit protrusion group and the second limit protrusion group, at least one protrusion may be provided. Illustratively, there may be one, two, or more than two.

Here, the bayonet is specifically described by taking an example in which the first limiting protrusion group and the second limiting protrusion group are provided on the bayonet, the first limiting protrusion group includes two first protrusions, and the second limiting protrusion group includes two second protrusions. Two first bulges are arranged on two opposite sides of the bayonet, and two second bulges are arranged on two opposite sides of the bayonet.

When the structure between the limiting member and the first and second housing assemblies is specifically configured, a first limiting relationship may be set between the limiting member and the first housing assembly, and a second limiting relationship may be set between the limiting member and the second housing assembly. The first limit relationship limits the rotation between the limiting part and the first shell assembly, the second limit relationship limits the rotation between the limiting part and the second shell assembly, and the second limit relationship and the first limit relationship are matched to form a limit space. The limiting space is used for limiting a moving path of the limiting piece along the extending direction of the axis of the inserting core.

The first limiting relationship may specifically include at least one first key groove structure, each first key groove structure of the at least one first key groove structure includes an alignment groove provided on the limiting member and an internal protrusion provided on the first housing assembly, the internal protrusion may be slidably embedded in the alignment groove relative to the alignment groove, one end of the internal protrusion away from the second housing assembly has a first limiting surface, and the first limiting surface is used for limiting a maximum displacement position of the limiting member along the first direction; the second limiting relation comprises at least one second key groove structure, each second key groove structure in the at least one second key groove structure comprises a sliding groove and a protruding rib, the sliding groove is formed in the second shell assembly, the protruding rib is arranged on the limiting part, the protruding rib can be embedded into the sliding groove in a sliding mode along the sliding groove, a second limiting surface is formed at the groove bottom of the sliding groove, and the second limiting surface is used for limiting the maximum displacement position of the limiting part in a second direction opposite to the first direction.

When the second housing assembly and the first housing assembly are configured in detail, the first housing assembly exemplarily includes an inner frame and an outer frame. In order to facilitate the installation of the second shell assembly with the first shell assembly, a first mark may be provided on the second shell assembly, and a second mark may be provided on the inner frame. And aligning the auxiliary inner frame and the second shell assembly through the first mark and the second mark. And then, connecting the outer frame with the inner frame to complete the installation operation of the whole optical connector. In order to prevent dislocation from appearing with second casing assembly when the equipment in inside casing, can further set up the position of supplementary counterpoint sign in order to instruct the second sign on the inside casing, promote the accuracy of first sign and second sign counterpoint.

When the structure of the second shell assembly is specifically arranged, the second shell assembly comprises the clamping seat and the elastic piece. After the first shell assembly and the second shell assembly are installed, the limiting part and the elastic part are arranged in the installation space of the clamping seat, and the elastic part is abutted between the limiting part and the blocking part of the accommodating space in a compression energy storage state. When the optical connector provided by the application is adopted to be butted with external equipment, the elastic piece can provide axial thrust along the axial lead direction of the ferrule for the ferrule.

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. 1;

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

FIG. 5 is a cross-sectional view at plane N of FIG. 3;

FIG. 6 is a further cross-sectional view taken at plane N of FIG. 3;

FIG. 7 is a schematic structural diagram of the limiting element in FIG. 2;

FIG. 8 is a schematic diagram of an optical connector assembly provided in an embodiment of the present application;

FIG. 9 is a schematic view of an optical connector assembly provided in an embodiment of the present application;

FIG. 10 is a schematic view of an optical connector assembly provided in an embodiment of the present application;

FIG. 11 is a schematic view of an optical connector assembly provided in an embodiment of the present application;

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 the inner frame structure of FIG. 13;

FIG. 15 is a schematic view of an optical connector assembly provided in an embodiment of the present application;

fig. 16 is a cross-sectional schematic view of the structure of fig. 15.

Description of the drawings: 01-an optical connector; 1-a pipe penetrating component; 11-a ferrule; 111-a body portion; 112-a plug-in part; 113-a spigot head; 12-a ferrule tail handle; 13-a dust cap; 2-a first housing component; 21-an inner frame; 211-a second identity; 212-a buckle; 213-auxiliary alignment identification; 214-inner protrusion; 215-a blocking ring; 22-outer frame; 3-a second housing component; 31-a cassette; 311-a chute; 312 — a first identification; 313-a hook; 314-a blocking portion; 32-an elastic member; 33-tail sleeve; 4-an optical cable; 5-a limiting part; 51-a first set of stop bumps; 52-a second set of stop tabs; 53-raised ribs; 54-alignment groove.

Detailed Description

First, an application scenario of the present application is introduced: in the distribution of ODN (optical distribution network) and the service segment scene, the optical cable is generally laid by using an air blowing method. Specifically, the optical cable is blown to a specified position from one end of the pipeline by using blowing force and advancing power provided by external air blowing equipment. After the cable reaches the subscriber side, the FMC (field mountable connector) needs to be assembled with the cable on site. However, the FMC connector has many parts, complicated field installation steps, and low construction efficiency.

Based on the application scenario, the embodiment of the present application provides an optical connector, and in particular provides an optical connector that can be quickly assembled on site in a blowing scenario and the like.

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 tube penetrating component 1, a first housing component 2, and a second housing component 3, where the tube penetrating component 1 is connected with a connection optical cable 4, and the first housing component 2 is shown in an SC shape. Under the blowing of external air blowing equipment, the pipe penetrating assembly 1 drives 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 first housing component 2 can also be LC type or other shapes, and the specific structure can be changed according to the requirement, which is not described herein again.

Fig. 2 is an exploded view of the structure shown in fig. 1, the ferrule assembly 1 in fig. 2 includes a ferrule 11 and a ferrule tail 12, and the material for preparing the ferrule 11 may be ceramic. For the purpose of protecting the end face of the ferrule 11, a dust cap 13 is provided in the feedthrough assembly 1 here. During the air blowing process, the dust cap 13 moves along with the ferrule 11, the ferrule tail handle 12 and the optical cable 4 in the conveying pipeline. 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 is high in the conveying pipeline, the end part of the ferrule 11 may not even be provided with a protection structure, and the protection structure can be specifically set according to the requirement, which is not described herein again. Fig. 2 also shows the structure of the first housing assembly 2 and the second housing assembly 3 in detail, wherein the first housing assembly 2 includes an inner frame 21 and an outer frame 22, and the second housing assembly 3 includes a clamping seat 31, an elastic member 32 and a tail sleeve 33. Here, the elastic member 32 is shown in a spring structure in fig. 2, and the elastic member 32 is sleeved outside the pipe penetrating assembly 1.

With continued reference to fig. 2, the boot 33 shown in fig. 2 provides lateral protection to the cable 4, although the boot 33 may be eliminated. Regarding the relationship between the tail sleeve 33 and the clamping seat 31, structurally, the clamping seat 31 and the tail sleeve 33 in the second housing component 3 may be an integral structure or a split structure. When the tail sleeve 33 and the clamping seat 31 are of a split structure, the tail sleeve 33 and the clamping seat 31 can be fixed by adopting a bonding or clamping structure; from the aspect of preparation materials, the preparation materials of the card seat 31 and the tail sleeve 33 may be the same or different, and may be specifically designed according to requirements, and are not described herein again. Certainly, when the material for preparing the tail sleeve 33 is rubber, the tail sleeve 33 made of rubber can play a better lateral protection role on the optical cable 4.

With continued reference to the structure shown in fig. 2, the optical connector 01 provided in the embodiment of the present application further includes a limiting member 5 engaged with the first housing assembly 2 and the second housing assembly 3, where the limiting member 5 is configured to limit the penetrating pipe assembly 1 in the axial direction and the circumferential direction of the ferrule 11. Here, the direction a shown in fig. 2 is the axial line extending direction of the ferrule 11, and here, for convenience of illustration, the direction b in fig. 2 is the circumferential direction of the ferrule 11.

Fig. 3 shows a schematic view of a ferrule assembly 1 with an optical cable 5 attached thereto, and fig. 4 is a cross-sectional view taken along plane M of fig. 3. Referring to fig. 4 in conjunction with the structure of fig. 3, the ferrule 11 has a fiber core through hole a, the ferrule tail 12 has a cable mounting hole B, the ferrule 11 includes a main body 111, a plug part 112 and a plug head part 113, and the ferrule 11 is connected with the plug hole of the ferrule 11 through the plug part 112, and the plug part 112 is in interference fit with the plug hole. It should be understood that the structures of the parts of the ferrule 11 are separated by dashed lines for clarity, and the specific separation positions between the parts are not limited thereto. In addition, 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 ferrule shank 12 is fixed in position with the ferrule 11 in the direction a, while the ferrule shank 12 is fixed in position with the ferrule 11 in the direction b.

It is noted that since the mating portion 112 has been fully inserted into the mating hole of the ferrule tail 12 in fig. 4, the configuration of the mating hole is not shown in numbered form here. 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 12, the surface of one side of the ferrule tail 12 facing the mating portion 112 of the ferrule 11 abuts against the stepped structure and is located at one side of the mating hole, and the core of the optical cable 4 extends from the core through hole a to the mating head portion 113 of the ferrule 11.

With continued reference to the structure shown in fig. 4, a stepped structure is formed between the main body portion 111 and the mating part 112 of the ferrule 11, and the radial dimension of the main body portion 111 is greater than that of the mating part 112. It is noted that the dimension of the ferrule tail 12 beyond the main body 111 can be controlled by the step-like structure between the main body 111 and the mating part 112, for example, an effect that the ferrule tail 12 does not exceed the main body 111 as shown in fig. 4 can be obtained. In other words, when the ferrule assembly 1 is viewed from one end of the plug head portion 113 in the axial direction of the ferrule 11, each portion of the ferrule tail 12 does not protrude beyond the body portion 111 of the ferrule 11. The main body 111 of the ferrule 11 is regarded as the maximum size part in the whole pipe penetrating assembly 1, and when the main body 111 of the ferrule 11 meets the pipe penetrating function, the whole pipe penetrating assembly 1 can realize the pipe penetrating operation. Therefore, the structure matching form greatly reduces the outer diameter size of the pipe penetrating component 1 and enhances the adaptability of the pipe penetrating component 1 to air blowing pipelines with different diameters.

Of course, in order to further optimize the size of the feedthrough assembly 1, a stepped structure is also formed between the plug part 113 and the body part 111, as in the structure shown in fig. 4, and the radial dimension of the plug part 113 is smaller than the radial dimension of the body part 111. When a protective member such as a dust cap 13 is provided on the plug head portion 113, the stepped structure between the plug head portion 113 and the main body portion 111 can reduce the dimension of the protective member beyond the main body portion 111, even to the effect that the protective member does not exceed the main body portion 111, so that the radial dimension of the entire poling assembly 1 can be reduced, and the poling assembly 1 can better meet the requirement of micro-tube blowing.

It should be understood that when the radial dimension of the dust cap 13 is smaller than the radial dimension of the main body 111, the penetration assembly 1 with the dust cap 13 mounted thereon can be directly mounted with the limiting member 5, the first housing assembly 2 and the second housing assembly 3 without disassembling the dust cap in the process, so as to prevent the plug head portion of the ferrule from being contaminated during the mounting process.

Referring to fig. 4 in addition to the structure shown in fig. 3, since the plugging depth of the plugging hole of the ferrule tail 12 limits the plugging depth of the plugging portion 112 relative to the plugging hole, the coverage area of the ferrule tail 12 on the plugging portion 112 can be controlled by controlling the depth of the plugging hole. As shown in fig. 4, the ferrule tail 12 does not completely cover the insertion portion 112, a gap is formed between the body 111 and the ferrule tail 12, and a groove C may be formed by the insertion portion 112, which is located in the gap, and the body 111 and the ferrule tail 12.

In the configuration shown in fig. 4, the ferrule shank 12 has a stop segment D. Fig. 5 is a sectional view of the stopper segment D corresponding to fig. 4, and the section of the stopper segment D may be polygonal on the plane N perpendicular to the axial line of the ferrule 11. Of course, the cross section of the limiting section D is not limited to the quadrangle shown in fig. 5 (here, the edge s formed by the chamfers between the two adjacent surfaces of the limiting section D is ignored), and polygons with other numbers of edges can be selected according to the requirement. It should be understood that the structure of the spacing section D is not limited to the structure shown in fig. 4 and 5. Taking the sectional view on the plane N as an example, the section of the limiting section can also be long waist-shaped. In preparing the spacer segment D having a long kidney-shaped cross-section, a cutting operation may be performed on the cylindrical ferrule shank 12 as partially shown by the dotted line in fig. 6. Specifically, the long waist shape is described here, and as shown in fig. 6, the long waist shape includes a straight edge L1, a straight edge L2, an arc-shaped edge L3, and an arc-shaped edge L4, wherein the straight edge L1, the arc-shaped edge L4, the straight edge L2, and the arc-shaped edge L3 are connected in sequence, and the straight edge L1 and the straight edge L2 are arranged in parallel.

Fig. 7 shows a specific structure of the limiting member 5 shown in fig. 2, wherein the limiting member 5 can be made of a material with a certain elastic deformation capability, such as a plastic part. Analyzing the structure of the limiting member 5 in fig. 7 with reference to the structure of the pipe penetrating assembly 1 in fig. 4, the limiting member 5 has a bayonet, and the limiting member 5 is laterally clamped into the pipe penetrating assembly 1 in fig. 4 through the bayonet to form the structure shown in fig. 8. Specifically, the limiting member 5 is engaged with the groove C of the pipe penetrating assembly 1 through one end of the bayonet, and engaged with the limiting section D of the ferrule tail shank 12 through the other end of the bayonet. It should be noted here that, as shown in fig. 8, the inner surface of one end of the bayonet of the limiting member 5 is matched with the shape of the groove bottom of the groove C, and the inner surface of the other end of the bayonet of the limiting member 5 is matched with the inner surface of the limiting segment D to form a limiting structure for preventing circumferential rotation.

It should be understood that, since one end of the limiting member 5 is engaged with the groove C, the limiting member 5 and the pipe penetrating component 1 do not move relatively along the direction a. Meanwhile, one end of the limiting part 5 is clamped on the limiting section D, and a limiting structure is arranged between the limiting section D and the limiting part 5, so that the limiting part 5 cannot rotate along the direction b relative to the limiting section D. In other words, the relative position between the limiting member 5 and the pipe penetrating component 1 in the directions a and b is fixed.

It should be noted that, in order to prevent the limiting member 5 from falling off from the tube penetrating assembly 1 from the bayonet, as shown in fig. 7 and 8, the limiting member 5 is provided with a first limiting protrusion set 51 at an edge for engaging with the groove C, and the first limiting protrusion set 51 includes two first protrusions, meanwhile, the limiting member 5 is provided with a second limiting protrusion set 52 at an edge for engaging with the limiting section D, and the second limiting protrusion set 52 includes two second protrusions. It is to be understood that only the first set of stop projections 51 may be provided, or only the second set of stop projections 52 may be provided. Since only the first limit projection group 51 is provided as compared with the structure shown in fig. 8, only the second limit projection group 52 is provided as a difference in the number of projection groups, it is not shown in the form of drawings. In addition, the number of the first protrusions in the first limiting protrusion group 51 and the number of the second protrusions in the second limiting protrusion group 52 can be changed according to requirements.

The first limiting protrusion set 51 is expanded by taking an example that only one first protrusion is included, and the first protrusion may be disposed on any one of two opposite sides of the bayonet. It should be noted that, since the structure is only the number of the first bumps in the first bump array 51 changed compared with the structure shown in fig. 8, it is not shown in the form of a drawing here.

In the field construction and assembly of the optical connector 01 provided in the embodiment of the present application as shown in fig. 1 and 2:

firstly, sending the pipe penetrating component 1 and the optical cable 4 shown in the figure 1 into an air blowing pipeline, and blowing the optical cable to a target position under the action of an air blower;

and step two, assembling the second shell component 3. Specifically, referring to fig. 2, the elastic member 32 is placed in the installation space of the socket 31, the socket 31 and the tail sleeve 33 are assembled, and after the assembly is completed, the second housing component 3 is sleeved on the outer side of the pipe penetrating component 1 along the direction a1, so as to form the structure shown in fig. 9. It is noted that the direction a1 is a specific direction of the direction a, and as with the configuration shown in fig. 9, the direction a1 specifically refers to the direction of the ferrule 11 pointing toward the ferrule tail 12.

Step three, with the structure shown in fig. 10, the limiting member 5 is laterally clamped on the pipe penetrating assembly 1 along the direction c;

step four, as in the structure shown in fig. 11, the pipe penetrating component 1 with the limiting member 5 engaged therein is moved along the direction a1 relative to the second housing component 3.

Step five, as in the structure shown in fig. 12, the protruding rib 53 on the limiting member 5 is embedded into the sliding groove 311 on the card seat 31 in an aligned manner along the direction a 1. It should be noted that, since the installation space inside the clamping seat 31 is provided with a stopping portion (not shown in fig. 12, the structure will be further described later), during the movement of the piercing assembly 1 along the direction a1, the elastic member 32 is abutted by the limiting member 5, and the elastic member 32 is further compressed along with the further movement of the piercing assembly 1.

It should be noted that, in the structure shown in fig. 12, a second key groove structure formed by the protruding rib 53 and the sliding groove 311 is disposed between the limiting member 5 and the second housing component 3, the second key groove structure is used as a second limiting relationship between the limiting member 5 and the second housing component 3, and the limiting member 5 and the second housing component 3 perform circumferential limiting along the direction b through the second limiting relationship, so as to ensure a unique position where the limiting member 5 is matched with the card seat 31. The groove bottom of the sliding groove 311 serves as a second limiting surface, which limits the maximum displacement position of the limiting member 5 moving along the direction a1 relative to the second housing component 3. Of course, a second key groove structure opposite to the second limit relationship in fig. 12 may be provided, and for example, a protruding rib may be provided on the second housing component 3, and a sliding groove may be provided on the limiting member 5. This structure is not shown in the form of drawings since it only involves a change in the position of the ribs and the runners from that of fig. 12. It should be understood that the structure shown in fig. 12 is shown as a second key groove structure formed by the protruding rib 53 and the sliding groove 311 in a matching manner, and of course, the number of the second key groove structures may be changed according to requirements, and will not be described herein again.

In addition, as the structure shown in fig. 12, the limiting member 5 is further provided with an alignment groove 54, and since the alignment groove 54 is used for fitting with the inner frame 21, the detailed description of the structure will be described in the description of the assembling method of the inner frame 21.

Sixthly, aligning the second mark 211 on the inner frame 21 with the first mark 312 on the card seat 31 along the direction a1, and continuously moving the inner frame 21 along the direction a1 until the buckle 212 on the inner frame 21 is engaged with the hook 313 on the card seat 31 to form the structure shown in fig. 13. It should be noted that, when the inner frame 21 is moved, the limiting member 5 and the piercing member 1 in fig. 12 move along the direction a1 together with the inner frame 21.

Referring to fig. 13 in conjunction with fig. 14, the inner frame 21 is provided with a second mark 211 shown in a long slot structure, and correspondingly, the clamping seat 31 is provided with a first mark 312 shown in a limiting convex rib. It should be noted that the matching relationship between the first mark 312 and the second mark 211 plays a fool-proof role, so as to ensure the accurate alignment between the inner frame 21 and the card socket 31, and avoid a relative error along the direction b between the two. In addition, as in the structure in fig. 13, an auxiliary alignment mark 213 may be disposed on the inner frame 21 to indicate the position of the second mark 211, so as to improve the accuracy of alignment between the first mark 312 and the second mark 211.

Of course, the structure opposite to that shown in fig. 13 can be provided, for example, a limiting convex rib is provided on the inner frame 21, and a long groove is provided on the clamping seat 31. It should be understood that, since the structure is only a change of the specific structure of the second mark 211 on the inner frame 21 and the first mark 312 on the card seat 31 compared with the structure in fig. 13, it is not shown in the form of a drawing.

Note that, in order to fix the inner frame 21 and the card holder 31, as shown in fig. 13, two sets of engaging structures formed by the hooks 212 and the hooks 313 are symmetrically disposed between the inner frame 21 and the card holder 31. Of course, only one set of engaging structure may be provided between the inner frame 21 and the engaging seat 31.

With continued reference to the structure shown in fig. 14, the inner frame 21 is provided with an inner protrusion 214, the inner protrusion 214 and the alignment groove 54 in fig. 12 cooperate to form a first key slot structure, and the first key slot structure is used as a first limit relationship between the inner frame 21 and the limiting member 5. The stopper 5 and the inner frame 21 are stopped in the direction b by the first stop relationship. It should be understood that the structure shown in fig. 14 is shown with a first key groove structure formed by the inner protrusion 214 matching with the alignment groove 54 in fig. 12, and of course, the number of the first key groove structure may be changed according to the requirement, and will not be described herein again.

Since one end of the inner protrusion 214 extends from the stop ring 215 of the inner frame 21, the side of the stop ring 215 facing the inner protrusion 214 forms a first position-limiting surface, which defines the maximum displacement position of the position-limiting element 5 moving along the direction a2 relative to the first housing component 1. It is noted that the direction a2 is here the opposite direction to the direction a 1.

Referring to fig. 12 in conjunction with fig. 14 in particular, when the inner frame 21 is assembled to the structure shown in fig. 12 along the direction a1, the stop ring 215 of the inner frame 21 pushes the limiting member 5 to move along the direction a1, and during the movement, the pipe penetrating assembly 1 moves along the direction a1 along with the limiting member 5; when the inner frame 21 and the cassette 31 are connected to form the structure shown in fig. 13, the first limiting surface of the inner frame 21 and the second limiting surface of the cassette 31 form a limiting space for the moving path of the limiting member 5 along the direction a (the direction a1 and the direction a2), so that the moving path of the pipe penetrating assembly 1 along the direction a can be limited.

Step seven, the outer frame 22 is connected with the inner frame 21 in fig. 14 along the direction a1 to form the optical connector 01 as shown in fig. 15.

As can be seen from the assembling process of the optical connector 01 provided in the embodiment of the present application, the optical connector provided in the embodiment of the present application reduces the assembling difficulty of the optical connector, so that the field assembling efficiency can be improved.

Fig. 16 is a cross-sectional view of the structure in fig. 15, and the structure shown in fig. 16 specifically describes the matching relationship between the first housing component 2, the second housing component 3 and the limiting member 5. After the inner frame 21 and the cartridge 31 are mounted in place, a mounting space is formed between the end surface P (i.e., the first abutment surface) of the stopper ring 215 and the end surface Q of the stopper 314 inside the cartridge 31. Since the elastic element 32 in the energy storage state is abutted between the end surface Q and the limiting element 5, the elastic force provided by the elastic element 32 enables the limiting element 5 to abut against the end surface P of the blocking ring 215, that is, the limiting element 5 does not move relative to the first housing component 1 along the direction a2 after being assembled.

With continued reference to fig. 15 and 16, when the optical connector 01 provided by the embodiment of the present application is used, the optical connector 01 can be mated with an external device by removing the dust cap 13. When the ferrule 11 is docked with an external device, the ferrule 11 moves in the direction a1, and during the movement, the stop piece 5 clamped on the pipe penetration assembly 1 moves along the ferrule 11 in the direction a1 and continuously compresses the elastic piece 32. At this time, the elastic member 32 provides the ferrule 11 with an axial thrust for docking in the direction a 2.

It should be understood that when the limiting member 5 contacts the bottom surface of the sliding slot 311 as shown in fig. 12, the bottom surface of the sliding slot 311 serves as the maximum displacement position of the limiting member 5 relative to the second housing component 3 along the direction a 1. At this time, the ferrule 11 cannot move any more in the direction a 1.

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 (15)

1. An optical connector, comprising:

the pipe penetrating component comprises a core insert and a core insert tail handle, and the core insert is fixed with the core insert tail handle; the core insert is provided with a fiber core through hole, the core insert tail handle is provided with an optical cable mounting hole, and the axial lead of the optical cable mounting hole is superposed with the axial lead of the fiber core through hole;

the first shell component and the second shell component are sleeved outside the pipe penetrating component;

and the limiting parts are matched with the first shell assembly and the second shell assembly and used for fixing the pipe penetrating assembly along the axial direction and the circumferential direction of the inserting core.

2. The optical connector of claim 1, wherein the feedthrough assembly has a groove and a retention segment; the limiting piece is clamped with the groove and used for fixing the relative position of the limiting piece and the pipe penetrating component along the axial lead direction of the inserting core; and the limiting part is clamped with the limiting section and used for fixing the relative position of the limiting part and the pipe penetrating component along the circumferential direction of the inserting core.

3. The optical connector according to claim 2, wherein the ferrule includes a main body portion, a mating portion is formed on a side of the main body portion facing the ferrule tail stem, a stepped structure is formed between the mating portion and the main body portion, and a radial dimension of the mating portion is smaller than a radial dimension of the main body portion; the insertion core tail handle is provided with an insertion hole, and the insertion part is in interference fit with the insertion hole.

4. The optical connector according to claim 3, wherein a gap is provided between an end surface of the main body portion facing the ferrule tail handle and the ferrule tail handle, and a portion of the mating portion located in the gap is engaged with the main body portion and the ferrule tail handle to form the groove; the limiting section is arranged on the insertion core tail handle.

5. The optical connector according to any one of claims 2 to 4, wherein a cross section of the stopper section in a plane perpendicular to an axial line direction of the ferrule is polygonal or long kidney-shaped.

6. The optical connector according to any one of claims 3 to 5, wherein a plug head portion for inserting a dust cap is provided on a side of the main body portion facing away from the ferrule tail stem, and a stepped structure is formed between the plug head portion and the main body portion.

7. The optical connector of claim 6, wherein the ferrule assembly further comprises a dust cap that is plugged with the plug head portion, and a radial dimension of the dust cap is equal to or less than a radial dimension of the ferrule body portion.

8. The optical connector according to any one of claims 2-7, wherein the retaining member is provided with a bayonet, an edge of the bayonet is provided with at least one retaining protrusion set for preventing the retaining member from falling off the ferrule assembly, and each of the at least one retaining protrusion set comprises at least one protrusion.

9. The optical connector according to claim 8, wherein the retaining member is formed with a first set of retaining protrusions and a second set of retaining protrusions, the first set of retaining protrusions includes two first protrusions disposed on opposite sides of the bayonet, and the two first protrusions are configured to engage with the grooves; the second limiting protrusion group comprises two second protrusions arranged on two opposite sides of the bayonet, and the two second protrusions are used for clamping the limiting section.

10. The optical connector of any one of claims 1-9, wherein a first limiting relationship is provided between the limiting member and the first housing assembly, the first limiting relationship being configured to fix a relative position of the limiting member and the first housing assembly along a circumferential direction of the limiting member; a second limiting relationship is arranged between the limiting piece and the second shell assembly, and the second limiting relationship is used for fixing the relative position of the limiting piece and the second shell assembly along the circumferential direction of the limiting piece;

the first limit relation and the second limit relation are matched to form a limit space; the limiting space is used for limiting the moving path of the limiting piece along the extending direction of the axis of the inserting core.

11. The optical connector of claim 10, wherein the first limiting relationship comprises at least one first key structure, each first key structure of the at least one first key structure comprises an alignment groove provided on the limiting member and an internal protrusion provided on the first housing component, the internal protrusion is slidably inserted into the alignment groove relative to the alignment groove, and an end of the internal protrusion facing away from the second housing component has a first limiting surface for limiting a maximum displacement position of the limiting member along a first direction;

the second limit relation comprises at least one second key groove structure, each second key groove structure in the at least one second key groove structure comprises a sliding groove and a protruding rib, the sliding groove of the second shell assembly is embedded into the protruding rib of the limiting part in a sliding mode, the groove bottom of the sliding groove forms a second limit surface, and the second limit surface is used for limiting the maximum displacement position of the limiting part along a second direction opposite to the first direction.

12. The optical connector of any one of claims 1-11, wherein a vertical projection of the ferrule overlies a vertical projection of the ferrule tail shank in a first plane perpendicular to the ferrule axis.

13. The optical connector of any one of claims 1-12, wherein the first housing element includes an inner frame and an outer frame sleeved outside the inner frame, the second housing element has a first identifier, the inner frame has a second identifier, and the second identifier is matched with the first identifier to realize the aligned installation of the inner frame and the second housing element.

14. The optical connector of claim 13, wherein the inner frame further has an auxiliary alignment mark for indicating a position of the second mark.

15. The optical connector according to any one of claims 1-14, wherein the second housing assembly comprises a clamping seat and an elastic member, the clamping seat has a mounting space for accommodating the limiting member, and a blocking portion is disposed in the mounting space; the elastic piece is provided with an installation channel for the pipe penetrating assembly to pass through;

the elastic piece is arranged in the installation space and abutted between the limiting piece and the blocking part, and is used for providing axial thrust along the axial lead direction of the ferrule when the ferrules are butted.

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