CN117289406A - Rotary lock pin polarization maintaining connector - Google Patents
Rotary lock pin polarization maintaining connector Download PDFInfo
- Publication number
- CN117289406A CN117289406A CN202311289389.1A CN202311289389A CN117289406A CN 117289406 A CN117289406 A CN 117289406A CN 202311289389 A CN202311289389 A CN 202311289389A CN 117289406 A CN117289406 A CN 117289406A
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- Prior art keywords
- sleeve
- sheet
- hole
- wall
- step surface
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- 230000010287 polarization Effects 0.000 title claims abstract description 27
- 239000000835 fiber Substances 0.000 claims abstract description 30
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims description 17
- 230000037431 insertion Effects 0.000 claims description 17
- 238000003032 molecular docking Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims 1
- 210000001503 joint Anatomy 0.000 abstract description 16
- 238000007667 floating Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 10
- 239000013307 optical fiber Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3812—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres having polarisation-maintaining light guides
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
- G02B6/3821—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with axial spring biasing or loading means
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
- G02B6/3871—Ferrule rotatable with respect to plug body, e.g. for setting rotational position ; Fixation of ferrules after rotation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention discloses a rotary ferrule polarization-preserving connector, which comprises a socket and a plug which are connected in a plugging and unplugging manner, wherein the socket comprises: the fixing seat is provided with a mounting hole penetrating along the inserting direction and a groove formed on the inner wall of the mounting hole and close to the tail end; the elastic piece is embedded in the groove and is provided with a sheet-shaped abutting part, and the sheet-shaped abutting part keeps a state of inclining towards the center of the mounting hole when not subjected to external force; and a core-holding assembly having a third step surface disposed toward the tail end; in the assembled state, the sheet-shaped abutting part abuts against the third step surface to limit the fiber core holding assembly to axially slide towards the tail end; and the sheet-shaped abutting part can be extruded by external force to deform towards the inner wall of the mounting hole so as to release the state of abutting against the third step surface. The rotary ferrule polarization maintaining connector can realize quick assembly, quick disassembly, adjustment and calibration of the fiber cores of the polarization maintaining fibers and floating butt joint.
Description
Technical Field
The invention belongs to the technical field of connectors, and particularly relates to a rotary ferrule polarization-preserving connector.
Background
The polarization maintaining optical fiber transmits linearly polarized light and is widely used in various fields of national economy such as aerospace, aviation, navigation, industrial manufacturing technology and communication. In an interference type optical fiber sensor based on optical coherent detection, a polarization maintaining optical fiber is used to ensure that the linear polarization direction is unchanged and improve the coherent signal to noise ratio so as to realize high-precision measurement of physical quantity.
When some connectors use polarization maintaining optical fibers, the structure of the connectors is designed so that the angle of the ferrule can be conveniently adjusted.
The chinese patent application No. 201911355599.X discloses a polarization-maintaining connector, which includes an outer frame, a core-inserting structure and an adjusting member, wherein the core-inserting structure is provided with a channel for a fiber core to pass through, at least part of the core-inserting structure is inserted into the outer frame, the core-inserting structure can rotate and slide relative to the outer frame, the adjusting member is connected with the core-inserting structure, and the adjusting member can slide and cannot rotate relative to the core-inserting structure; the adjusting member has a rotating state in which the adjusting member is rotatable relative to the outer frame and a holding state in which the adjusting member is held fixed relative to the outer frame.
Similarly, there are also chinese patent applications 202122639843.4, 202223003816.9, etc. in which such polarization maintaining connectors are referred to.
However, the present patent application is based on a single-core polarization maintaining connector structure, and the single-core polarization maintaining connector can be directly replaced and assembled, and the calibration of the fiber core can also be independently performed, and how the multi-core polarization maintaining connector meets the requirements of the prior art for assembly and calibration of the fiber core is recorded.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the following technical scheme:
the rotary ferrule polarization maintaining connector comprises a socket and a plug which are connected in a plugging and unplugging manner, wherein the socket comprises:
the fixing seat is provided with a mounting hole penetrating along the inserting direction and a groove formed on the inner wall of the mounting hole and close to the tail end;
the elastic piece is embedded in the groove and is provided with a sheet-shaped abutting part, and the sheet-shaped abutting part keeps a state of inclining towards the center of the mounting hole when not subjected to external force;
and a core-holding assembly having a third step surface disposed toward the tail end;
in the assembled state, the sheet-shaped abutting part abuts against the third step surface to limit the fiber core holding assembly to axially slide towards the tail end; and the sheet-shaped abutting part can be extruded by external force to deform towards the inner wall of the mounting hole so as to release the state of abutting against the third step surface.
Further, the mounting hole sequentially comprises a hole Duan Yi, a hole Duan Er, a hole section III and a hole Duan Si along the inserting direction, the hole Duan Yi is arranged close to the inserting end, the diameter of the hole Duan Er is smaller than Kong Duanyi, the two ends of the hole Duan Er are formed into a first step surface by the hole section III, the diameter of the hole Duan Si is larger than that of the hole section III, a second step surface is formed at the joint of the hole Duan Si and the hole section III, and the groove is formed in the inner wall of the Kong Duansi.
Further, the fiber core holding assembly comprises a butt joint sleeve and a holding sleeve, wherein the butt joint sleeve and the holding sleeve are inserted by the insertion end of the mounting hole, the butt joint sleeve is fixed in the holding sleeve, and the outer wall of the holding sleeve is provided with a protruding part which is abutted against the first step surface.
Further, the core retention assembly includes a mounting hole inserted at a trailing end thereof:
the first fixing sleeve is hollow and tubular, a boss is arranged on the inner wall of the first fixing sleeve, and a protrusion is arranged on the outer wall of the first fixing sleeve;
the second fixing sleeve is movably arranged between the boss in the first fixing sleeve and the tail end opening, and the edge of the inserting end of the second fixing sleeve is provided with a concave chute;
the inserting core is fixed at the inserting and pulling end of the first fixing sleeve;
the tail sleeve is fixed at the tail end of the second fixed sleeve, a gap is reserved between the tail sleeve and the second fixed sleeve, an axially extending extension arm is arranged at the plug end of the tail sleeve, and the extension arm can be slidably embedded in the chute to limit the second fixed sleeve to circumferentially rotate in the first fixed sleeve;
the spring is arranged in a gap between the tail sleeve and the second fixed sleeve, and two ends of the spring respectively abut against the tail sleeve and the second fixed sleeve
The adjusting sleeve is sleeved outside the first fixing sleeve, the side wall of the adjusting sleeve is provided with an opening penetrating along the axial direction, and the protrusions can be embedded into the opening and abut against the two side walls of the opening.
Further, the elastic piece comprises an annular part with a notch and a sheet-shaped abutting part formed on the periphery of the annular part.
Furthermore, the root of the sheet-shaped abutting part is provided with a spike part, the inner wall of the groove is provided with index grooves which are uniformly distributed at intervals, the thickness of the opening is larger than that of the bulge, the sheet-shaped abutting part can be obliquely embedded into the opening and abut against the two side walls of the opening, and in this state, the spike part is embedded into the index grooves.
Further, when the sheet-shaped abutting part abuts against the third step surface, the spike part is separated from the indexing groove.
Further, the outer wall of the tail sleeve is provided with a flange which protrudes outwards and abuts against the end part of the first fixing sleeve.
The beneficial effects of the invention are as follows:
(1) The elastic piece is in a non-closed ring shape with a notch, and the diameter of the elastic piece can be reduced by forcing to shrink and deform towards the notch, so that the elastic piece can be quickly placed into and embedded into the groove from the opening of the hole Duan Si; after the first fixing sleeve, the second fixing sleeve, the spring and the tail sleeve are integrally assembled, the tail sleeve upper adjusting sleeve is inserted from the tail end of the hole Duan Si until the end part of the sheet-shaped abutting part slides into the third step surface and abuts against the third step surface, so that the assembly is completed;
(2) After the fiber core holding assembly is assembled into the fixed seat, a gap for accommodating deformation of the sheet-shaped abutting part is formed between the adjusting sleeve and the elastic piece, the sheet-shaped abutting part is deformed again to the inner wall of the hole Duan Si until the sheet-shaped abutting part is completely separated from the third step surface by inserting the part into the gap, and at the moment, the adjusting sleeve can be taken out from the hole Duan Si after losing the limit of the sheet-shaped abutting part, so that the component of the fiber core holding assembly is convenient to replace or maintain;
(3) The fiber core of the calibration polarization-maintaining fiber can be adjusted, the rotation of the adjusting sleeve drives the core insert to synchronously rotate,
(4) The floating butt joint of the multi-core plug can retract towards the tail end along the plug-in direction, so that the second fixed sleeve slides in the first fixed sleeve, the distance between the second fixed sleeve and the tail sleeve is reduced, the spring is compressed, the problem that the butt joint of the cores is not in place or the cores are excessively collided due to assembly or processing misplug during multi-core plug can be avoided, and the stability and reliability of butt joint of all the cores are ensured;
(5) The multi-core polarization maintaining optical fiber can be simultaneously plugged and unplugged, and the polarization requirements can be met before plugging and unplugging a plurality of optical fiber cores.
Drawings
FIG. 1 is a schematic diagram showing the overall structure of a rotary ferrule polarization maintaining connector according to an embodiment;
FIG. 2 is a schematic view showing the structure of a socket in the embodiment;
FIG. 3 is an exploded view of the holder and internal core retention assembly of the embodiment;
FIG. 4 is an exploded view of a core-holding assembly according to an embodiment;
FIG. 5 is a schematic view showing an assembled state of the core-holding assembly according to the embodiment;
FIG. 6 is a schematic view showing an assembled state of the ferrule, the second fixing sleeve, the spring and the tail sleeve in the embodiment;
FIG. 7 is a schematic view showing the structure of an elastic member in the embodiment;
FIG. 8 shows a partial enlarged view of D in FIG. 7 in an embodiment;
FIG. 9 is a schematic view showing the structure of the fixing base in the embodiment;
FIG. 10 illustrates an adjustment handle in an embodiment;
FIG. 11 shows a partial enlarged view of E in FIG. 10 in an embodiment;
FIG. 12 shows an implementation of the rotational adjustment state in which the core-holding assembly is held in synchronization with the elastic member in the embodiment;
fig. 13 shows another implementation of the rotation adjustment state in which the core holding assembly is kept in synchronization with the elastic member in the embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
Examples
Fig. 1 is a schematic diagram of the overall structure of a rotary ferrule polarization-maintaining connector, which has two parts, namely a socket 10 and a plug 20, and the socket 10 and the plug 20 are plugged into each other to complete the butt joint and the optical path coupling of the internal fiber core, and the schematic directions of the socket 10 and the plug 20 along the plugging direction a-B are shown in fig. 1.
Fig. 2 shows a schematic structure of the socket 10, where the socket 10 includes a housing 11 and a fixing base 12 from outside to inside, the fixing base 12 is integrally fixed inside the housing 11, and a plurality of fiber core holding assemblies 13 are fixed inside the fixing base 12, and in this embodiment, four cores are taken as an example, but the connector is not limited to adopting other core configurations.
Fig. 3 shows an exploded view of the fixing base 12 and the internal core holding component 13, wherein the fixing base 12 has an inserting direction a-B according to the direction characteristic of the connector inserting process, wherein a is an inserting end, and B is a tail end (outlet end), and the inserting directions a-B in the embodiment refer to the connecting direction of the inserting end a and the tail end B.
The core holding component 13 is fixed inside the fixing base 12 through the elastic component 14, meanwhile, the state of the elastic component 14 can be changed to achieve the purpose that the core holding component 13 can be adjusted in a circumferential direction inside the fixing base 12, and meanwhile, the elastic component 14 can completely fix the core holding component 13 and limit the circumferential rotation of the core holding component 13 after changing into another state.
Referring to fig. 3, the fixing base 12 is provided with a mounting hole 12-1 for accommodating the fixed core holding component 13, the mounting hole 12-1 sequentially comprises a hole Duan Yi-11, a hole Duan Er-12, a hole segment three 12-13 and a hole Duan Si-14 along the inserting direction a-B, the hole Duan Yi-11 is arranged near the inserting end a, the diameter of the hole Duan Er-12 is smaller than Kong Duanyi-11 and the diameter of the hole segment three 12-13, so that a first step surface is formed at two ends of the hole Duan Er 12-12, the diameter of the hole Duan Si-14 is larger than the diameter of the hole segment three 12-13, so that a second step surface is formed at the joint of the hole Duan Si-14 and the hole segment three 12-13, a groove 12-15 is formed on the inner wall of the hole Duan Si-14, and the groove 12-15 is used for embedding and mounting the elastic element 14.
Fig. 4 is an exploded view of the core-holding assembly 13, and fig. 5 is a view showing an assembled state of the core-holding assembly 13, wherein the core-holding assembly 13 includes a ferrule 13-1, a butt-joint sleeve 13-2, a holding sleeve 13-3, a first fixing sleeve 13-4, a second fixing sleeve 13-5, a spring 13-6, a tail sleeve 13-7, and an adjusting sleeve 13-8, and wherein:
the butt joint sleeve 13-2 and the holding sleeve 13-3 form a butt joint assembly, the butt joint sleeve 13-2 is fixed in the holding sleeve 13-3, and the butt joint sleeve 13-2 is in interference fit with the holding sleeve 13-3; the outer wall of the retaining sleeve 13-3 is provided with a protruding part 13-31, so that the protruding part 13-31 is abutted against a first step surface between the holes Duan Yi-11 and Duan Er-12 after the retaining sleeve 13-3 is inserted and assembled from the insertion end A of the mounting hole 12-1, and the insertion and fixing position of the retaining sleeve 13-3 is ensured.
The first fixed sleeve 13-4, the second fixed sleeve 13-5, the spring 13-6 and the tail sleeve 13-7 form a floating adjusting component, the first fixed sleeve 13-4 is of a hollow tubular structure, a boss 13-41 is arranged on the inner wall of the first fixed sleeve 13-4, the second fixed sleeve 13-5, the spring 13-6 and the tail sleeve 13-7 are all arranged in the first fixed sleeve 13-4, the second fixed sleeve 13-5, the spring 13-6 and the tail sleeve 13-7 are sequentially arranged along the inserting direction A-B, the second fixed sleeve 13-5 is abutted against the boss 13-41, the tail sleeve 13-7 is fixed at the tail end B of the second fixed sleeve 13-5, a gap is reserved between the second fixed sleeve 13-5 and the tail sleeve 13-7 to accommodate the spring 13-6, and two ends of the spring 13-6 are abutted against the second fixed sleeve 13-5 and the tail sleeve 13-7 respectively.
The adjusting sleeve 13-8 is a rotatable adjusting component, the adjusting sleeve 13-8 is sleeved outside the first fixing sleeve 13-4, the side wall of the adjusting sleeve 13-8 is provided with an opening 13-81 penetrating through the side wall in the axial direction, the outer wall of the first fixing sleeve 13-4 is provided with a convex 13-42 matched with the opening 13-81, the width of the convex 13-42 is the same as that of the opening 13-81, but the thickness of the convex 13-42 is smaller than that of the opening 13-81, and as can be seen in combination with fig. 3 and 5, the convex 13-42 does not extend outside the opening 13-81 completely; when the projection 13-42 is positioned in the opening 13-81 after assembly, the first fixing sleeve rotates along with the rotation of the adjusting sleeve 13-8.
Based on the above-mentioned assembling structure of the core holding assembly 13, one end of the ferrule 13-1 is inserted by the insertion end a of the second fixing sleeve 13-5 and is fixed by interference fit with the second fixing sleeve 13-5, the other end of the ferrule 13-1 extends into the docking sleeve 13-2 toward the insertion end a through the boss 13-41, and the end of the ferrule 13-1 does not extend to the end of the docking sleeve 13-2, that is, the docking sleeve 13-2 has a section of insertion space at the insertion end a to accommodate insertion of the plug member of the plug 20 to dock with the ferrule 13-1, and the core is fixed inside the ferrule 13-1.
FIG. 6 is a schematic view showing an assembled state of the ferrule 13-1, the second fixing sleeve 13-5, the spring 13-6 and the tail sleeve 13-7, and referring to FIGS. 4 and 5, the ferrule 13-1 is fixed at the insertion end A of the second fixing sleeve 13-5, the second fixing sleeve 13-5 is movably arranged in the first fixing sleeve 13-4 as a whole, the second fixing sleeve 13-5 can rotate circumferentially and slide axially in the first fixing sleeve 13-4 without other limitation, the edge of the insertion end A of the second fixing sleeve 13-5 is provided with concave sliding grooves 13-51, the number of the sliding grooves 13-51 is not limited to four in the drawing, and the second fixing sleeve 13-5 is also provided with an extension section 13-52 extending towards the tail end B; the plug end A of the tail sleeve 13-7 is provided with an axially extending extension arm 13-72, and the extension arm 13-72 is slidably embedded in the chute 13-51 so as to limit the circumferential rotation of the second fixed sleeve 13-5 in the first fixed sleeve 13-4, so that the second fixed sleeve 13-5 can only axially slide in the first fixed sleeve 13-4; the clearance for accommodating the spring 13-6 is arranged between the tail sleeve 13-7 and the extension section 13-52, meanwhile, the center of the tail sleeve 13-7 is provided with a threading hole 13-73 for accommodating the extension section 13-52 to penetrate, the outer wall of the tail sleeve 13-7 is provided with an outwards protruding flange to form a limiting step 13-71, and the limiting step 13-71 is used for abutting against the end part of the first fixed sleeve 13-4 when the tail sleeve 13-7 is assembled with the first fixed sleeve 13-4, limiting the embedding distance of the tail sleeve 13-7 and ensuring that a space for accommodating the spring 13-6 is provided between the tail sleeve 13-7 and the second fixed sleeve 13-5.
In combination with the above, the core-holding assembly 13 as a whole can perform the following functions: (1) rotatable adjustment means: the fiber core is directly fixed in the inner cavity of the inserting core 13-1, when the adjusting sleeve 13-8 is rotated, the opening 13-81 on the adjusting sleeve 13-8 is matched with the bulge 13-42 to drive the first fixing sleeve 13-4 to rotate, and the adjusting sleeve 13-8 and the first fixing sleeve 13-4 have no compression effect, that is, the adjusting sleeve 13-8 can be easily separated from the first fixing sleeve 13-4; when the first fixed sleeve 13-4 rotates, the tail sleeve 13-7 is fixed with the tail end B of the first fixed sleeve 13-4 in an interference fit manner, so that the tail sleeve 13-7 also rotates; based on the matching relation between the extension arm 13-72 on the tail sleeve 13-7 and the sliding groove 13-51 on the second fixed sleeve 13-5, the tail sleeve 13-7 rotates and drives the second fixed sleeve 13-5 to rotate, so that the insert core 13-1 fixed at the plug end A of the second fixed sleeve 13-5 rotates through the second fixed sleeve 13-5, namely, the rotation adjustment of the insert core 13-1 can be realized, and the calibration of the fast and slow axes in the polarization maintaining optical fiber inside the insert core 13-1 can be realized; (2) floating butt joint of multicore plug: in combination with the drawings and the foregoing description of the present application, at least two fiber core holding assemblies 13 are fixed inside the connector of the present application, and polarization maintaining fibers are fixed inside each fiber core holding assembly 13, when the socket 10 and the plug 20 of the connector are plugged into each other, and when the plug member inside the plug 20 contacts the plug core 13-1, the plug core 13-1 can retract toward the tail end B along the plugging direction a-B, so that the second fixed sleeve 13-5 slides inside the first fixed sleeve 13-4, the distance between the second fixed sleeve 13-5 and the tail sleeve 13-7 is reduced, and the spring 13-6 is compressed, and during this process, the plug core 13-1 can only stretch and not rotate due to the matching relationship between the extension arm 13-72 and the chute 13-51, so that the calibration state of the polarization maintaining fibers can be ensured, after the socket 10 and the plug 20 are separated, the spring 13-6 rebounds to reset the second fixed sleeve 13-5 to ensure the complete contact of the plug core 13-1 during the next plugging, and based on the single floating fiber core holding assembly 13-5, the problem of the plugging of the multiple cores 13-1 can be avoided or the situation that the multiple cores are not in the butt joint is prevented from being excessively or being excessively connected to the plug core 13-1.
Fig. 7 shows a schematic structural view of the elastic member 14, where the elastic member 14 is in a non-closed ring shape with a notch, so that the elastic member 14 can be contracted and deformed toward the notch by applying force to reduce the diameter, so that the elastic member can be quickly placed into and embedded in the groove 12-15 from the opening of the hole Duan Si-14, and after the elastic member 14 is embedded in the groove 12-15, the elastic member 14 is released from being deformed and spread to be completely fitted in the groove 12-15, and is fixed.
Referring to fig. 7, the elastic member 14 includes a ring portion 14-1 and a sheet-shaped abutting portion 14-2, wherein the sheet-shaped abutting portion 14-2 is formed by removing material from a sidewall of the ring portion 14-1, that is, a portion of the material is removed from the sidewall of the ring portion 14-1 by punching or other means to expose a shape of the sheet-shaped abutting portion 14-2, and then the sheet-shaped abutting portion 14-2 is permanently deformed toward an inside of the ring portion 14-1, so that the sheet-shaped abutting portion 14-2 is kept inclined toward an inside of the ring portion 14-1 all the time without being subjected to an external force, and is not coplanar with a curved surface of the ring portion 14-1; referring to fig. 3 to 5, the outer side wall of the adjusting sleeve 13-8 has a third stepped surface 13-82 provided toward the rear end B, and when the adjusting sleeve 13-8 is assembled, the adjusting sleeve 13-8 is inserted from the rear end B of the hole Duan Si-14 to contact and press the sheet-shaped abutting portion 14-2 to deform the sheet-shaped abutting portion 14-2 toward the inner wall of the hole Duan Si-14 until the adjusting sleeve 13-8 is completely inserted, and the end portion of the sheet-shaped abutting portion 14-2 slides into the third stepped surface 13-82 and abuts against the third stepped surface 13-82, thereby restricting the sliding of the adjusting sleeve 13-8 from the hole Duan Si-14.
In connection with the above description, the assembly process of the core-holding assembly 13 is as follows: after the butt joint sleeve 13-2 and the retaining sleeve 13-3 are fixed, the butt joint sleeve is inserted and fixed from the insertion end A of the hole Duan Yi-11; after the first fixing sleeve 13-4, the second fixing sleeve 13-5, the spring 13-6 and the tail sleeve 13-7 are integrally assembled, the tail sleeve upper adjusting sleeve 13-8 is inserted from the tail end B of the hole Duan Si-14 until the end part of the sheet-shaped abutting part 14-2 slides into the third step surface 13-82 and abuts against the third step surface 13-82, and then the assembly is completed.
The structure of the rotary ferrule polarization-preserving connector in the embodiment not only can realize the rapid assembly of each component, but also can realize the rapid disassembly: after the core holding component 13 is assembled in the fixing seat 12, a gap for accommodating the deformation of the sheet-shaped abutting portion 14-2 is further formed between the adjusting sleeve 13-8 and the elastic piece 14, the sheet-shaped abutting portion 14-2 is deformed again toward the inner wall of the hole Duan Si-14 until the sheet-shaped abutting portion is completely separated from the third step surface 13-82 by inserting a component into the gap, and at the moment, the adjusting sleeve 13-8 can be taken out from the hole Duan Si-14 after losing the limit of the sheet-shaped abutting portion 14-2, so that the component of the core holding component 13 can be replaced or maintained conveniently.
Fig. 8 is a partially enlarged view of D in fig. 7, fig. 9 is a schematic structural view of the fixing base 12, and, in combination with fig. 8 and 9, the sheet-like interference portion 14-2 further has a spike portion 14-3 thereon, the spike portion 14-3 is formed on the sheet-like interference portion 14-2 and changes the extending state along with the deformation of the sheet-like interference portion 14-2, the spike portion 14-3 is disposed at a root portion of the sheet-like interference portion 14-2, where the root portion of the sheet-like interference portion 14-2, that is, a position where the sheet-like interference portion 14-2 is connected with the annular portion 14-1, an end portion of the sheet-like interference portion 14-2, that is, a position on the sheet-like interference portion 14-2, is far from the root portion, on an inner wall of the groove 12-15 forms an index groove 12-16 uniformly spaced, and the spike portion 14-3 can be embedded in the index groove 12-16 when protruding from an outer wall state of the elastic member 14.
The arrangement of the dividing grooves 12-16 is that the dividing grooves 12-16 are matched with the spines 14-3 to limit the circumferential rotation of the fiber core holding assembly 13 in the fixing base 12, on the other hand, the dividing grooves 12-16 are uniformly distributed at intervals, when the rotation angle of the adjacent dividing grooves 12-16 is matched with the calibration minimum scale of the fast and slow axes in the polarization-maintaining fiber, the auxiliary calibration of the fast and slow axes in the polarization-maintaining fiber can be carried out by depending on the dividing grooves 12-16, so that the calibration is more accurate and quick, and the unreliability of the calibration by an operator only through experience and the inefficiency of repeated adjustment are avoided.
In a specific application environment, the width of the sheet-like interference portion 14-2 is the same as the width of the opening 13-81 on the adjusting sleeve 13-8, and according to the foregoing description, the thickness of the opening 13-81 on the adjusting sleeve 13-8 is larger than that of the protrusion 13-42, so that any one sheet-like interference portion 14-2 on the elastic member 14 can be inserted into the opening 13-81 on the adjusting sleeve 13-8 during assembly, and because of the insertion state of the sheet-like interference portion 14-2, the sheet-like interference portion 14-2 is inclined to the inner side of the annular portion 14-1 to a greater extent than that of the other sheet-like interference portion 14-2, and the spike portion 14-3 on the sheet-like interference portion 14-2 inserted into the opening 13-81 protrudes from the annular portion 14-1 and is also inserted into the indexing groove 12-16, the elastic member 14 can limit the axial sliding and circumferential rotation of the core holding assembly 13 in the fixing seat 12 by the elastic member 14.
While as the tab-like interference portion 14-2 is deformed from the opening 13-81 of the adjusting sleeve 13-8 toward the annular portion 14-1, the spike-like interference portion 14-3 gradually slides out of the indexing groove 12-16, and when the tab-like interference portion 14-2 is in an interference state against the third step surface 13-82, the spike-like interference portion 14-3 is completely separated from the indexing groove 12-16, that is, in a state where the spike-like interference portion 14-3 is not inserted into the opening 13-81 of the adjusting sleeve 13-8, the circumferential rotation of the core holding assembly 13 is not limited, therefore, after the assembly is completed, the tab-like interference portion 14-2 can be pressed outwards by inserting the adjusting handle into the opening 13-81 of the adjusting sleeve 13-8, so that the spike-like interference portion 14-3 on the tab-like interference portion 14-2 is separated from the indexing groove 12-16, and at this time, the calibration of the fast and slow axes in the internal polarization maintaining fiber can be realized by rotating the core holding assembly 13, that after the calibration is completed, the tab-like interference portion 14-2 is again inserted into the opening 13-81 of the adjusting sleeve 13-8, the spike-like interference portion 14-3 is embedded into the indexing groove 12-6 again, and the fiber core holding assembly is fixed.
In addition, in this embodiment, an adjusting handle for realizing alignment and disassembly of a fast axis and a slow axis in a polarization maintaining optical fiber is also described, fig. 10 shows a schematic structural diagram of the adjusting handle, the adjusting handle includes a handle 31 and a plug 32, the plug 32 is fixed at one end of the handle 31, the other end of the plug 32 far away from the handle 31 is opened, the whole cross section of the plug 32 is annular to adapt to a gap between an adjusting sleeve 13-8 and an elastic piece 14, when disassembly is required, the plug 32 is inserted into the gap between the adjusting sleeve 13-8 and the elastic piece 14, an inner side wall of the plug 32 is in contact with the adjusting sleeve 13-8, an outer side wall of the plug 32 is in contact with the elastic piece 14, the plug 32 is extruded after contacting with a sheet-shaped abutting part 14-2, and the sheet-shaped abutting part 14-2 is deformed to an annular part 14-1 until the sheet-shaped abutting part is completely separated from a third step surface 13-82, and at this time, the fiber core holding component 13 can be taken out; the center of the plug 32 is provided with a through hole 32-2, and the side of the plug is provided with a notch 32-1 communicated with the through hole 32-2, wherein the through hole 32-2 and the notch 32-1 are used for avoiding the thrown polarization-maintaining optical fiber.
Fig. 11 is a partial enlarged view of E in fig. 10, the adjusting handle further includes a pulling piece 33 fitted to the inner wall of the plug 32, the pulling piece 33 has the same width as the opening 13-81, and both sides of the pulling piece 33 have wings 33-1, the wings 33-1 serve to connect the pulling piece 33 to the plug 32 on one hand, and on the other hand, a limit area is formed between the two wings 33-1, when the pulling piece 33 is extended out of the plug 32, the plug 32 of the adjusting handle is inserted from the gap between the adjusting sleeve 13-8 and the elastic member 14, and the pulling piece 33 is aligned with the opening 13-81 before insertion, so that the sheet-like interference portion 14-2 in the opening 13-81 is limited to the limit area between the two wings 33-1, while as the pulling piece 33 is inserted, the pulling piece 33 presses and deforms the sheet-shaped abutting portion 14-2 toward the annular portion 14-1 after contacting the sheet-shaped abutting portion 14-2 until the sheet-shaped abutting portion 14-2 is completely separated from the opening 13-81 and enters the third step surface 13-82, so that all the sheet-shaped abutting portions 14-2 on the elastic piece 14 are in an abutting state with the third step surface 13-82, and when the sheet-shaped abutting portion 14-2 abuts against the third step surface 13-82, the spike portion 14-3 is in a separated state with the indexing groove 12-16, so that the core holding assembly 13 can be rotated to keep the fast and slow axes in the calibrated polarized optical fiber, meanwhile, the sheet-shaped abutting portion 14-2 is not separated from the third step surface 13-82, so that the core holding assembly 13 is still stably limited in the hole Duan Si-14, the stability of the calibration process is ensured, and the adjusting handle can be pulled out after the calibration is completed, the tab shaped interference portion 14-2 is then repositioned to be re-inserted into the opening 13-81.
To ensure that the core holding assembly 13 and the elastic member 14 maintain a synchronous rotation adjustment state during the calibration process, one way of implementing this embodiment is to shift the pulling piece 33 from the inner wall of the plug 32 as shown in fig. 12, that is, the pulling piece 33 protrudes from the inner wall of the plug 32 and can be embedded into the opening 13-81, so that the adjusting sleeve 13-8 and the elastic member 14 are fixed and limited simultaneously by the pulling piece 33.
In order to ensure that the core holding component 13 and the elastic member 14 maintain a synchronous rotation adjustment state during the calibration process, as shown in fig. 13, another implementation manner of this embodiment is to set the handle 31 to be opposite and separate, and based on the through hole 32-2 and the notch 32-1 of the polarization maintaining fiber for avoiding throwing out on the plug 32, the whole plug 32 is not closed, so that after the plug 32 is inserted into the gap between the adjusting sleeve 13-8 and the elastic member 14, the handle 31 is kneaded by external force to drive the plug 32 to deform inwards to squeeze the adjusting sleeve 13-8 in the middle of clamping, and the adjusting sleeve 13-8 and the elastic member 14 can be fixed and calibrated.
It should be noted that, in both the disassembly process and the calibration process, the plug 32 is inserted into the gap between the adjustment sleeve 13-8 and the elastic member 14 and is sleeved outside the adjustment sleeve 13-8, and the insertion depth of the plug 32 is greater in the disassembly process than in the calibration process.
Referring to fig. 11, the setting plate 33 is further provided with a regulator 33-2 capable of sliding in a circumferential direction to adjust a position, the inner wall of the plug 32 is provided with a tooth groove 32-3 and a flat bottom groove 32-3 which are connected, the tooth groove 32-3 and the flat bottom groove 32-3 extend along an axial direction, the regulator 33-2 can slide into the tooth groove 32-3 or the flat bottom groove 32-3, when the regulator 33-2 slides into the area of the tooth groove 32-3, the tail end of the regulator 33-2 can be clamped into the tooth groove 32-3 to limit the axial sliding of the setting plate 33 on the plug 32, and when the regulator 33-2 slides into the flat bottom groove 32-3, the tail end of the regulator 33-2 is not limited and can slide freely in the flat bottom groove 32-3, so that the setting plate 33 can also slide on the plug 32 along the axial direction; based on this, the application scenario of the adjustment handle can be selected by adjusting the position of the adjuster 33-2, the adjuster 33-2 is used for calibrating the polarization maintaining fiber when located in the region of the tooth slot 32-3, and the adjuster 33-2 is used for disassembling the fiber core holding assembly 13 when located in the region of the tooth flat bottom slot 32-3; and the regulator 33-2 can be adjustably clamped into the specific tooth slot 32-3 to determine the length of the pulling piece 33 extending out of the plug 32, so that the applicability is improved.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting.
Claims (8)
1. The utility model provides a rotatory lock pin polarization-preserving connector, includes plug and socket and the plug of plug connection, its characterized in that, the socket includes:
the fixing seat is provided with a mounting hole penetrating along the inserting direction and a groove formed on the inner wall of the mounting hole and close to the tail end;
the elastic piece is embedded in the groove and is provided with a sheet-shaped abutting part, and the sheet-shaped abutting part keeps a state of inclining towards the center of the mounting hole when not subjected to external force;
and a core-holding assembly having a third step surface disposed toward the tail end;
in the assembled state, the sheet-shaped abutting part abuts against the third step surface to limit the fiber core holding assembly to axially slide towards the tail end; and the sheet-shaped abutting part can be extruded by external force to deform towards the inner wall of the mounting hole so as to release the state of abutting against the third step surface.
2. The rotary ferrule polarization maintaining connector of claim 1, wherein the mounting hole comprises a hole Duan Yi, a hole Duan Er, a hole section three and a hole Duan Si in sequence along the insertion direction, the hole Duan Yi is arranged near the insertion end, the diameter of the hole Duan Er is smaller than Kong Duanyi and the hole section three form a first step surface at two ends of the hole Duan Er, the diameter of the hole Duan Si is larger than the hole section three form a second step surface at the joint of the hole Duan Si and the hole section three, and the groove is formed on the inner wall of the Kong Duansi.
3. The rotary ferrule polarization maintaining connector of claim 2, wherein the core holding assembly comprises a docking sleeve and a holding sleeve inserted by the insertion end of the mounting hole, the docking sleeve is fixed inside the holding sleeve, and the outer wall of the holding sleeve is provided with a protruding part which is abutted against the first step surface.
4. A rotary ferrule polarization maintaining connector according to any one of claims 1 to 3, wherein the ferrule holding assembly comprises a ferrule inserted through the mounting hole end:
the first fixing sleeve is hollow and tubular, a boss is arranged on the inner wall of the first fixing sleeve, and a protrusion is arranged on the outer wall of the first fixing sleeve;
the second fixing sleeve is movably arranged between the boss in the first fixing sleeve and the tail end opening, and the edge of the inserting end of the second fixing sleeve is provided with a concave chute;
the inserting core is fixed at the inserting and pulling end of the first fixing sleeve;
the tail sleeve is fixed at the tail end of the second fixed sleeve, a gap is reserved between the tail sleeve and the second fixed sleeve, an axially extending extension arm is arranged at the plug end of the tail sleeve, and the extension arm can be slidably embedded in the chute to limit the second fixed sleeve to circumferentially rotate in the first fixed sleeve;
the spring is arranged in a gap between the tail sleeve and the second fixed sleeve, and two ends of the spring respectively abut against the tail sleeve and the second fixed sleeve
The adjusting sleeve is sleeved outside the first fixing sleeve, the side wall of the adjusting sleeve is provided with an opening penetrating along the axial direction, and the protrusions can be embedded into the opening and abut against the two side walls of the opening.
5. The connector of claim 4, wherein the elastic member comprises an annular portion with a notch and a sheet-like interference portion formed on a peripheral side of the annular portion.
6. The connector of claim 5, wherein the root of the sheet-like interference part has a spike part, the inner wall of the groove has index grooves uniformly spaced, the thickness of the opening is greater than that of the protrusion, the sheet-like interference part can be obliquely inserted into the opening and abut against both side walls of the opening, and the spike part is inserted into the index groove in this state.
7. The connector of claim 6, wherein the spike is separated from the indexing groove when the tab-like interference portion abuts the third step surface.
8. The rotary ferrule polarization maintaining connector of claim 7, wherein the outer wall of the boot has a flange protruding outwardly against the end of the first stationary sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311289389.1A CN117289406B (en) | 2023-10-07 | 2023-10-07 | Rotary lock pin polarization maintaining connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311289389.1A CN117289406B (en) | 2023-10-07 | 2023-10-07 | Rotary lock pin polarization maintaining connector |
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| CN117289406A true CN117289406A (en) | 2023-12-26 |
| CN117289406B CN117289406B (en) | 2024-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311289389.1A Active CN117289406B (en) | 2023-10-07 | 2023-10-07 | Rotary lock pin polarization maintaining connector |
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| CN (1) | CN117289406B (en) |
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| CN117289406B (en) | 2024-07-09 |
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