CN115201972B - Miniaturized optical fiber connector and optical fiber adapter - Google Patents
Miniaturized optical fiber connector and optical fiber adapter Download PDFInfo
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- CN115201972B CN115201972B CN202210745608.1A CN202210745608A CN115201972B CN 115201972 B CN115201972 B CN 115201972B CN 202210745608 A CN202210745608 A CN 202210745608A CN 115201972 B CN115201972 B CN 115201972B
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 79
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims description 44
- 238000003825 pressing Methods 0.000 claims description 27
- 239000000835 fiber Substances 0.000 claims description 26
- 210000000078 claw Anatomy 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 2
- 238000011900 installation process Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 9
- 230000013011 mating Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000452 restraining effect Effects 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention relates to a miniaturized optical fiber connector and an optical fiber adapter, wherein the optical fiber connector comprises a plug shell, a contact pin, a spring and a flange plate, the contact pin is inserted into a front end jack of the flange plate, a hollow cavity which can contain the flange plate and is axially penetrated is formed in the plug shell, a spring supporting surface and a flange supporting piece are arranged in the hollow cavity, a spring jacking surface and a flange jacking surface are arranged on the flange plate, the spring is sleeved on the flange plate and is in a compressed state, two ends of the spring are respectively abutted against the spring supporting surface and the spring jacking surface, and the flange jacking surface is abutted against the flange supporting piece so as to limit the flange plate in the hollow cavity of the plug shell in the axial direction; the optical fiber adapter comprises an adapter shell and a ceramic sleeve, and the integral forming of the adapter shell and the sleeve is realized by arranging a U-shaped opening on the sleeve in the adapter shell. The invention can effectively reduce the size of the connector, reduce the number of parts of the connector and the adapter, and meet the requirement of high-density deployment.
Description
Technical Field
The invention belongs to the field of connectors in the communication industry, and particularly relates to a miniaturized optical fiber connector and an optical fiber adapter.
Background
With the continuous development of modern information technology, data information traffic has been explosively increased, and how to realize more information transmission in a limited space has become a problem to be solved by the communication industry. High density installation deployment is one of the solutions to this problem, requiring higher density fiber optic connections to be made within a certain volume of space. In this context, there is an urgent need for a small-sized and easy-to-install optical fiber connector for use in a connection scenario requiring multiple optical fibers and in a fiber optic cassette or module having limited space.
The existing miniaturized optical fiber connector generally refers to a 0.9mmLC optical fiber connector, as shown in fig. 1, the optical fiber connector consists of a contact pin A, a front shell B, a flange C, a spring D, a rear shell E, a sheath F and an adaptive optical cable G, wherein the front shell B is of a hollow structure with an outer square and an inner round, an annular blocking structure is arranged in the front end of the front shell B in a direction axial direction, a square opening is formed in the middle of the outer side wall of the rear end, the contact pin A is a cylindrical ceramic contact pin with the outer diameter of 1.25mm, the flange C is of a hollow cylindrical structure with the front thick and the rear thin, and the front end of the flange C is provided with a circular opening; the front end of the rear shell E is of a square structure, two slope-shaped bulges are arranged on the outer side wall of the front end, and the rear end of the rear shell E is of a circular bulge; the contact pin A is inserted into the flange C through crimping and forced loading to form a contact pin part, the spring D is installed in the contact pin part from the tail of the flange C, the contact pin part and the spring D are installed in the front shell B from back to front until the front end of the flange C is contacted with an annular blocking structure in the front shell B, the rear shell E is inserted into the front shell B from back to front, the rear end of the spring is contacted with an annular push top surface in a rear shell channel, and a slope-shaped bulge outside the front end of the rear shell E is inserted into a square opening in the rear end of the front shell B and is assembled in place; the sheath F is arranged on the rear shell D from back to front, so that the round bulge at the rear end of the rear shell D is inserted into the sheath F, and the assembly of the plug is completed.
The problems of the existing miniaturized optical fiber connector are that: the parts are more, the tail structure is complex, the length is longer, the width is larger, and the requirements of the optical fiber high-density installation deployment scene cannot be met.
Emerging fiber optic connector miniaturization techniques typically reduce the size of the connector tail sleeve, thereby reducing the connector length. However, if the tail sleeve is only shortened, the length of the connector is not changed greatly, because the front end of the tail sleeve needs to be connected with the protrusion at the tail of the connector shell by a certain size, and in certain application scenes, the rear end of the tail sleeve needs to be provided with a certain size for installing the protection optical fiber; and the tail sleeve is shortened, so that the cross section size of the connector cannot be reduced. Moreover, even if the tail sleeve is omitted, the connector does not change significantly in width, and because the front housing and the rear housing need to be mounted in a matched manner, the wall thickness of the housing needs to be designed to consider the space yielding of the two housing matching positions, so that the wall thickness of the matching positions is relatively smaller, and the wall thickness of the non-matching positions is relatively larger, so that the overall cross-sectional dimension of the connector is larger, and the high-density mounting of the multipath optical fibers is also affected.
For the optical fiber adapter matched with the miniaturized optical fiber connector, the optical fiber adapter in the prior art generally adopts a two-body structure, the adapter shell is divided into two parts along the axial symmetry, the two parts of adapter shells are combined together in an ultrasonic welding or glue bonding mode, and a sleeve for mounting a ceramic sleeve in the adapter is also separately processed with the adapter shell, and then the adapter shell is assembled, so that the assembly of the optical fiber adapter is realized. The structure of the optical fiber adapter also has the problems of more parts and great processing and assembling difficulties.
Disclosure of Invention
The invention aims to provide a miniaturized optical fiber connector and an optical fiber adapter, which can reduce the axial size and the radial size of the connector through the improvement of the structure on the premise of meeting the installation requirement of a contact pin part so as to meet the connection scene of the prior high-density multipath optical fiber and the use scene of an optical fiber box and a module with limited space, and can reduce the number of parts of the connector and the adapter and reduce the difficulty of processing and assembly.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the utility model provides a miniaturized fiber optic connector, includes plug casing, contact pin, spring and ring flange, and the contact pin is inserted and is established in the front end jack of ring flange, its characterized in that: the plug shell is internally provided with a hollow cavity which can accommodate the axial penetration of the flange plate, a spring supporting surface and a flange supporting piece are arranged in the hollow cavity, a spring propping surface and a flange propping surface are arranged on the flange plate, the spring is sleeved on the step surface of the flange plate and is in a compressed state, two ends of the spring are respectively abutted against the spring supporting surface and the spring jacking surface, and the flange jacking surface is abutted against the flange supporting piece so as to axially limit the flange plate in the hollow cavity of the plug shell.
Further, the flange support piece is an elastic piece, an extrusion part for extruding the elastic piece to penetrate through a channel formed by the elastic piece is arranged on the flange plate, a space for accommodating the elastic piece after rebound is formed on the flange plate, and the spring support surface is arranged on the elastic piece.
Still further, the extrusion portion of ring flange sets up the rear end at the ring flange, is equipped with the extrusion face on the extrusion portion, and the extrusion face is used for extrudeing the elastic component and makes it take place deformation so that extrusion portion passes through the passageway in the ring flange installation, the preceding terminal surface of extrusion portion be the flange roof pressure face to after extrusion portion passes through the passageway the butt is on the rear end face of elastic component.
As one implementation mode of the elastic piece, the elastic piece is an elastic arm arranged at the rear end of the hollow cavity, the front end face of the elastic arm is the spring supporting face, the front end of the flange plate is provided with the spring pressing face, the elastic arm is extruded by the flange plate extrusion part to deform in the direction away from the extrusion part in the process of being assembled into the plug shell from front to back, the extrusion part is in rebound after passing over the elastic arm, and the front end face of the extrusion part is in butt joint with the rear end face of the elastic arm.
As another implementation mode of elastic component, the plug housing rear end is equipped with two at least demountable installation's casing tail covers, sets up the bullet arm as the elastic component on the casing tail covers, the preceding terminal surface of bullet arm is as the spring supporting surface, the ring flange is from the front to the in-process of packing into the plug housing backward, and the bullet arm receives the extrusion of ring flange extrusion portion to the direction deformation of keeping away from extrusion portion, and the extrusion portion is passed over the bullet arm and is rebounded, the preceding terminal surface of extrusion portion with the rear end face butt of bullet arm.
In a third embodiment of the elastic member, the elastic member is at least two elastic claws disposed at the rear end of the hollow cavity, one end of each elastic claw is fixed on the plug housing, the end face of the other end is abutted with the front end face of the extrusion part of the flange plate, and the bending part in the middle of each elastic claw is used as a spring supporting surface abutted with the spring.
According to the embodiment, the flange supporting piece is arranged to be the spring claw, the spring claw is detachably fixed on the plug shell, the complexity of injection molding of the shell can be reduced, and the structural strength of the flange supporting piece can be increased due to the fact that the spring claw is made of metal materials.
In the implementation of the invention, the plug shell can be also arranged into a left-right split structure or an upper-lower split structure so as to reduce the assembly difficulty of the connector.
When the plug shell adopts a split structure, the flange support piece is arranged at the rear end of the plug shell and sleeved on the flange plate, the rear end of the flange plate is provided with a radially protruding flange limiting part, the front end face of the flange limiting part is used as a flange jacking face and is abutted to the rear end face of the flange support piece, and the front end face of the flange support piece is a spring support face.
When the plug shell adopts a split structure, the flange support piece can be arranged at the front end of the plug shell, and the front end surface of the flange plate is used as the flange jacking surface and is abutted against the rear end surface of the flange support piece; the rear end of the plug shell is provided with a spring supporting part, the front end face of the spring supporting part is the spring supporting face, and the rear end of the flange plate penetrates through the spring supporting part.
In the invention, the rear end of the flange plate is provided with an anti-rotation structure which is matched with the plug shell.
Specifically, the anti-rotation structure is a plane arranged on the circumference of the rear end of the flange, and the plane is matched with the inner side wall of the plug shell to prevent the flange from rotating.
In the invention, the outer side surface of the plug shell is provided with the elastic fin, and the elastic fin is provided with the locking protrusion matched with the optical fiber adapter.
The invention also provides an optical fiber adapter matched with the miniaturized optical fiber connector to reduce the number of parts of the existing optical fiber adapter and solve the problem of high processing and assembling difficulty of the existing adapter.
The optical fiber adapter comprises an adapter shell and a ceramic sleeve, wherein the adapter shell is of an integrated structure, one end of the adapter shell is provided with an interface for connecting the miniaturized optical fiber connectors related to the technical schemes, and the other end of the adapter shell is provided with an interface for connecting the miniaturized optical fiber connectors related to the technical schemes or an interface for connecting a standard LC optical fiber connector; a sleeve integrally formed with the adapter housing is arranged in the adapter housing, and the ceramic sleeve is arranged in the sleeve; the cylindrical surface of the sleeve is provided with a U-shaped opening which is axially formed.
The beneficial effects of the invention are as follows: the plug shell of the optical fiber connector provided by the invention is not composed of a front shell and a rear shell which are mutually inserted and matched and connected, but is in an axial integrated structure, the sheath is eliminated, the length of the connector is greatly improved, the rear shell is eliminated, the plug shell does not need to consider the space abdication when being matched with the rear shell in the wall thickness design, the plug shell can release a certain wall thickness space, so that the wall thickness of the shell is thinner, the cross-sectional dimension of the connector along the axial direction can be further reduced, the radial dimension of the connector is reduced, the dimension of the connector is reduced from the axial direction and the radial direction, the integral miniaturization of the connector is facilitated, and the use requirement of high-density installation is met.
For the above reasons, compared with the conventional optical fiber connector in the prior art, the optical fiber connector has the length dimension of only about 1/3 of the length of the conventional LC connector, the connector width of 3.5mm, and only about 3/4 of the conventional LC connector, thereby being convenient for high-density deployment.
In addition, the connector and the adapter of the invention have the advantages of less parts, simple structure, shortened assembly time and reduced manufacturing cost, and are one of the best solutions for high-density installation and deployment of the optical fiber box and the wavelength division equipment.
The adapter shell of the invention can be provided with different connectors to realize the coupling connection between the connector of the invention and the traditional LC optical fiber connector, or the coupling connection between the two connectors of the invention, and can also be coupled with the connectors of conventional SC, FC, ST and the like.
Drawings
FIG. 1 is a schematic view of a fiber optic connector according to the prior art;
FIG. 2 is an exploded view of the optical fiber connector according to the present invention in embodiment 1;
FIG. 3 is a cross-sectional view of the optical fiber connector of the present invention in example 1;
FIG. 4 is a schematic view of an anti-rotation structure on a flange in an optical fiber connector according to the present invention in embodiment 1;
FIG. 5 is an exploded view of the optical fiber connector according to the present invention in embodiment 2;
Fig. 6 is a schematic structural view of a plug housing of the optical fiber connector according to the present invention in embodiment 2;
FIG. 7 is a schematic view of a flange split support of an optical fiber connector according to the present invention in embodiment 2;
FIG. 8 is an exploded view of the optical fiber connector according to the present invention in embodiment 3;
FIG. 9 is a cross-sectional view of the optical fiber connector according to the present invention in example 3;
FIG. 10 is a schematic view of the structure of the latch in embodiment 3;
FIG. 11 is an exploded view of the optical fiber connector according to the present invention in embodiment 4;
FIG. 12 is a cross-sectional view of the optical fiber connector according to the present invention in example 4;
FIG. 13 is an exploded view of the optical fiber connector according to the present invention in embodiment 5;
FIG. 14 is a cross-sectional view of the optical fiber connector according to the present invention in example 5;
FIG. 15 is a cross-sectional view of the optical fiber connector of the present invention in example 6;
FIG. 16 is an exploded view of the fiber optic adapter of the present invention of example 7;
FIG. 17 is a partial cross-sectional view of the adapter housing of example 7;
FIG. 18 is a schematic diagram of a coupling connection of a miniaturized fiber optic connector and a conventional LC connector according to the present invention;
The marks in the figure: 1. plug housing, 2, spring, 3, pin member, 4, pin, 5, flange, 6, spring fin, 7, fiber optic cable, 8, extrusion, 801, anti-rotation plane, 9, spring arm, 10, housing tail, 11, mounting notch, 12, locating hole, 13, locking protrusion, 14, guide post, 15, extruded face, 16, mounting groove, 17, spring claw, 1701, bend, 1702, first branch, 1703, securing head, 1704, second branch, 18, plug left housing, 19, plug right housing, 20, flange support, 21, flange stop, 22, spring support, 23, plug upper housing, 24, plug lower housing, 25, securing post, 26, adapter housing, 27, locking port, 28, ceramic ferrule, 29, sleeve, 30, U-shaped opening, 100, small fiber connector, 200, fiber optic adapter, 300, conventional LC fiber optic connector.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples, which are not intended to be limiting.
The description of the "front" and "rear" portions of the various parts of the connector in this invention is based on the direction of insertion of the connector into the fiber optic adapter, and vice versa, and is based on the assembled state of the parts.
Example 1: referring to fig. 2-4, a miniaturized optical fiber connector includes a plug housing 1, a pin 4, a spring 2, and a flange 5; the pin 4 is a standard LC ceramic pin commonly used in industry, and the front end of the flange 5 is provided with a circular concave hole so as to assemble and press the pin 4 to form a pin component 3; the plug housing 1 is of an axial integrated structure, a hollow cavity which is communicated front and back is arranged in the plug housing, an annular spring arm 9 which is formed by extending along the circumferential direction of the hollow cavity is arranged at the rear part in the hollow cavity, a central channel of the spring arm 9 is used for inserting the flange 5 and playing a role in radially supporting the flange 5, the front end face of the spring arm 9 is a spring supporting face B, and a space for deformation of the spring arm 9 is reserved between the rear end of the spring arm 9 and the inner wall of the plug housing 1; the front end of the plug housing 1 is provided with an opening with an outer square and an inner round so as to realize the front-to-back installation of the pin component 3 and the assembly of the connector and the optical fiber adapter, and the rear end surface of the plug housing 1 is provided with a square opening; the whole flange 5 is an axial reducing body, the front end of the flange is provided with a cylindrical head with a large diameter, the rear end face of the cylindrical head is a spring jacking face A, the cylindrical face of the cylindrical head is in matched contact with the inner diameter face of the plug shell 1, the rear end of the flange 5 is provided with a frustum-shaped extrusion part 8, the front end face and the rear end face of the extrusion part 8 are respectively a large diameter end face and a small diameter end face, the large diameter end face of the extrusion part 8 is used as the flange jacking face, the diameter of the large diameter end face of the extrusion part 8 is smaller than that of the cylindrical head, the shaft face of the flange 5 between the cylindrical head and the extrusion part 8 is a step face, the step face is sleeved with a spring 2, and the two ends of the spring 2 are tightly ground; a through hole which is communicated from front to back is arranged in the flange plate 5 so that the optical fiber is connected with the contact pin 4; the pin part 3 is assembled from front to back when being assembled into the plug housing 1, and the spring 2 is compressed between the spring pressing surface A and the spring supporting surface B; the spring arm 9 is an elastic flange support piece, the conical surface of the extrusion part 8 can extrude and enlarge the aperture of the central channel of the spring arm 9 in the process of assembling the pin part from front to back, when the extrusion part 8 passes through the central channel of the spring arm 9, the spring arm 9 rebounds, the central channel is wrapped on the axial surface of the flange plate 5, and the rear end surface of the spring arm 9 abuts against the large-diameter end surface of the extrusion part 8 to block the forward movement of the pin part 3, so that the axial limit of the pin part 3 is achieved.
As a variant, the spring arms 9 may be provided in a plurality of spaced apart relationship along the circumference of the hollow chamber, the plurality of spring arms defining a central passage through which the flange passes.
The plug housing 1 outside be provided with the elastic fin 6 of backward upper perk, the middle part both sides of elastic fin 6 are equipped with locking protruding 13 (see fig. 6), when connector and fiber optic adapter assembly, elastic fin 6 is pushed down, when locking protruding 13 reaches the locking mouth of fiber optic adapter housing, elastic fin 6 and locking protruding 13 rebound upwards, locking protruding 13 card realizes the locking of connector and adapter in the locking mouth, only need to push down elastic fin 6 can when the unblock.
Further, in order to prevent the flange 5 from rotating in the plug housing 1, the rear end of the flange 5 is further provided with an anti-rotation structure, as shown in fig. 4, which is two symmetrical anti-rotation planes 801 milled on the conical surface of the extrusion part 8, and the two anti-rotation planes 801 are matched with two inner side walls of the square opening 101 above the rear end surface of the plug housing 1, so as to prevent the flange 5 from rotating. The anti-rotation plane 801 may be provided with only one.
Example 2: as shown in fig. 5 to 7, this embodiment differs from embodiment 1 in that: the rear end of the plug housing 1 is provided with mounting notches 11 on the upper and lower surfaces thereof, and two housing tail covers 10 which have the same structure and are arranged symmetrically up and down are detachably arranged at the positions of the two mounting notches 11, and the mounting notches 11 are only arranged on the two surfaces of the plug housing 1, so that the length of the plug housing 1 is not increased after the housing tail cover 10 is mounted.
In this embodiment, the "detachable manner" is implemented by adopting the interference fit manner of the guide post 14 and the positioning hole 12, specifically: the connecting end face of the shell tail cover 10 is provided with a guide post 14 perpendicular to the end face, the end face of the rear end of the plug shell 1 is correspondingly provided with a positioning hole 12 matched with the guide post 14, the shell tail cover 10 is fixedly installed at the rear end installation notch 11 of the plug shell 1 through interference fit of the guide post 14 and the positioning hole 12, at the moment, the two shell tail covers 10 are combined in the up-down direction, and the rear end of the shell tail cover 10 forms an interface for connecting a connector and an optical cable 7. Furthermore, the positions of the guide posts 14 and the positioning holes 12 may be interchanged, or the housing tail cap 10 may be assembled with the plug housing 1 by other forms, such as gluing, welding, etc.
In terms of function, the housing tail cap 10 may integrate the function of the spring arm 9 as described in embodiment 1. The specific implementation form is as follows: the inner wall of the shell tail cover 10 is provided with the spring arms 9 at the front position, the spring arms 9 are L-shaped, the front end faces of the spring arms 9 are flush with the front end face of the shell tail cover 10, a space for deformation of the spring arms 9 is reserved between the rear ends of the spring arms 9 and the inner wall of the shell tail cover 10, the two spring arms 9 on the two shell tail covers 10 are oppositely arranged at intervals, the front end faces of the spring arms 9 serve as spring supporting faces B, the side faces of the spring arms 9 are provided with pressed faces 15, the pressed faces 15 are used for being matched with the pressing faces of the pressing parts 8 on the flange plate 5, after the two shell tail covers 10 are assembled, a central channel is formed between the two spring arms, therefore, the flange plate 5 is assembled into the plug shell 1 from front to back, the pressing parts 8 at the rear ends of the flange plate 5 press the pressed faces 15 of the spring arms, deformation of the spring arms 9 is forced to expand the channel, and accordingly the pressing parts 8 of the flange plate 5 can pass through the channel between the two spring arms 9, after the spring arms 9 are restored, and the large-diameter end faces of the pressing parts 8 are abutted against the flange plate 5, and the flange plate 5 is limited in the axial direction.
Other structures of this embodiment are the same as those of embodiment 1.
In embodiments 1 and 2, the pressing portion 8 has a truncated cone shape, and the pressing surface has a tapered surface, but the pressing portion 8 may have other shapes as long as it has a pressing surface capable of pressing the spring arm 9 to radially deform to expand the central passage, and for example, the pressing surface may be a slope on the circumference of the pressing portion 8.
Example 3: as shown in fig. 8 to 10, this embodiment differs from embodiment 1 in that: this embodiment replaces the spring arm described in embodiment 1 with two oppositely arranged spring fingers 17 and has the same function.
As shown in fig. 10, the structure of the spring claw 17 is a V-shape formed by bending an elastic material, the vertex of the V-shape is a smooth bending part 1701, the outer circumferential surface of the bending part 1701 is used as a spring supporting surface B abutting against the spring 2, two sides of the bending part 1701 are respectively provided with a first branch 1702 and a second branch 1704, the end of the first branch 1702 is bent into a fixing head 1703 for being assembled in a mounting groove 16 on the plug housing 1, the second branch 1704 is inclined towards the rear of the cavity in the plug housing 1, after the two spring claws 17 are mounted, a central channel similar to a spring arm in embodiment 1 is formed between the two second branches 1704, therefore, in the process of mounting the flange 5 into the plug housing 1 from front to rear, the pressing part 8 of the flange 5 presses the second branch 1704 to enlarge the channel, so that the pressing part 8 passes over the spring claw 17, after the pressing part 8 completely passes through the channel, the end face of the second branch 1704 is reset, and the end face of the second branch 1704 abuts against the large diameter end face of the pressing part 8 to form an axial limit of the flange 5.
The spring claw 17 can be used as a flange support piece and can be detachably assembled with the plug housing 1, so that the need of integrally forming the flange support piece during the molding of the plug housing 1 can be avoided, the complexity of the injection molding of the housing is reduced, the spring claw 17 is made of metal materials, and the structural strength of the flange support piece can be enhanced.
Other structures of this embodiment are the same as those of embodiment 1.
In the above embodiments 1,2 and 3, the spring arm 9 and the spring claw 17 are flange supporting members with certain elasticity and the same function, and are used for radially supporting the rear portion of the flange 5 and axially limiting the flange 5, and may also form a spring supporting surface B, and in the three embodiments, the overall form of the plug housing 1 is an integrally formed structure.
In the implementation of the invention, the plug housing 1 can also be arranged into a split structure without changing the axial integrity of the plug housing 1, as follows.
Example 4: as shown in fig. 11 and 12, the difference between this embodiment and embodiment 1 is that the plug housing 1 is designed to be a left-right split structure, a rigid flange support 20 is disposed at the spring arm position of embodiment 1, the flange support 20 and the elastic fins 6 are also disposed to be a left-right split structure, a fixing hole is disposed on the mating surface of the left plug housing 18, a fixing post in interference fit with the fixing hole is disposed on the mating surface of the right plug housing 19, or the positions of the fixing hole and the fixing post are opposite, and the same is also fixed on the mating surfaces of the left and right elastic fins 6 by interference fit of the fixing post and the fixing hole. For the flange 5, a radially protruding flange limiting portion 21 is disposed at the rear end of the flange 5, the front end surface of the flange limiting portion 21 is used as the flange pressing surface and abuts against the rear end surface of the flange support 20, and the front end surface of the flange support 20 is the spring support surface.
Other structures of this embodiment are the same as those of embodiment 1.
In this embodiment, during assembly, the spring 2 may be first installed onto the flange 5 of the pin member 3 from back to front, then the pin member 3 and the adapted optical cable 7 are assembled, then the assembled pin member 3 and optical cable 7 are installed into the left plug housing 18 or the right plug housing 19, so that the front end face of the flange limiting portion 21 abuts against the rear end face of the flange support 20, during this process, the spring 2 is compressed in place, and finally the right plug housing 19 and the left plug housing 18 are fixed in an abutting manner, thereby completing the assembly of the connector.
Example 5: as shown in fig. 13 and 14, the difference between this embodiment and embodiment 4 is that the plug housing 1 is designed to be in a split structure from top to bottom, the elastic fin 6 is located on the upper plug housing 23, the flange support 20 is also configured to be in a split structure from top to bottom, the mating surface of the upper plug housing 23 is provided with a fixing hole, and the mating surface of the lower plug housing 24 is provided with a fixing post 25 in interference fit with the fixing hole, or the positions of the fixing hole and the fixing post are exchanged. Other structures of this embodiment are the same as those of embodiment 4.
The pin member 3 and the plug housing 1 in this embodiment are assembled in a similar manner to embodiment 4.
In the above embodiments 4 and 5, the flange support 20 for supporting and axially restraining the flange 5 may be provided with a spring arm structure having a certain elasticity as in embodiment 1. In the embodiment 4 and the embodiment 5, the extrusion part 8 of the flange 5 is arranged to be in a frustum structure, or the extrusion part 8 can be arranged to be a section of cylinder, and the flange 5 can be supported and axially limited by means of the front end surface of the cylinder propping against the rear end surface of the flange support 20.
After the plug housings of the above embodiments 4 and 5 adopt the split structural design, the assembly manners of the flange and the spring are different from those of the integrated plug housings of embodiments 1 to 3, so that the assembly difficulty of the flange and the spring can be reduced, and the stability of the flange can be improved.
Example 6: in the above embodiment, the flange supporting members are all disposed at the rear end of the plug housing, the flange pressing surface at the rear end of the flange plate is propped against the rear end surface of the flange supporting member to realize the axial positioning of the flange plate, and the springs are compressed between the spring pressing surface at the front end of the flange plate and the spring supporting surface on the flange supporting member; it will be appreciated that the flange support may also be provided at the front end of the plug housing, as shown in fig. 15: in this embodiment, based on the adjustment of the partial structure of embodiment 5, the front end of the plug housing 1 is provided with the flange support 20, the rear end of the plug housing is provided with the spring support 22, the spring support 22 is sleeved at the rear part of the flange 5, the front end surface of the flange 5 is used as the flange pressing surface and is abutted against the rear end surface of the flange support 20, the rear end surface of the cylindrical head at the front end of the flange 5 is used as the spring pressing surface, the front end surface of the spring support 22 is used as the spring support surface, and the spring 2 is compressed between the spring pressing surface and the spring support surface and presses the flange pressing surface against the flange support 20. The flange support 20 and the spring support 22 are each provided with a central passage through which the pin member passes.
The above embodiments relate to a specific implementation manner of a miniaturized optical fiber connector, and the invention also provides an optical fiber adapter matched with the miniaturized optical fiber connector, so as to reduce the number of parts of the existing optical fiber adapter and solve the problem of high processing and assembling difficulty of the existing optical fiber adapter.
Example 7: as shown in fig. 16 and 17, an optical fiber adapter comprises an adapter housing 26 and a ceramic sleeve 28, wherein the adapter housing 26 is in an integrated structure, a sleeve 29 integrated with the adapter housing 26 is arranged at the front end of an interface connected with the connector of the invention in the adapter housing 26 so as to be installed in the ceramic sleeve 28, and annular flanges capable of holding the ceramic sleeve 28 are respectively arranged at two ends of the sleeve 29 so as to prevent the ceramic sleeve 28 from falling off. The front end section of thick bamboo wall of sleeve 29 is equipped with two symmetrical U type openings 30, and U type opening 30 radially runs through the section of thick bamboo wall of sleeve 29, and U type opening 30 forms the opening at the terminal surface of sleeve 29, and the drawing of patterns when U type opening 30 is favorable to adapter casing 26 and sleeve 29 integrated into one piece to realize the integrated into one piece of adapter casing 26 and sleeve 29, need not welding, sticky or afterloading structure, thereby reduce part quantity, reduce adapter assembly difficulty, practice thrift the cost.
The surface of the adapter shell 26 is also provided with a plurality of rectangular locking openings 27, when the optical fiber connector of the invention is inserted into the adapter interface, the elastic fins 6 of the plug shell 1 are firstly pressed down, when the locking protrusions 13 on the elastic fins 6 meet the locking openings 27, the elastic fins 6 are sprung up, and the locking protrusions 13 are clamped into the locking openings 27, so that the locking connection of the miniaturized optical fiber connector 100 and the optical fiber adapter 200 of the invention is realized; when unlocking, the locking protrusion 13 moves downward by pressing down the elastic fin 6, and is disengaged from the locking opening 27, thereby unlocking the miniaturized optical fiber connector 100 and the optical fiber adapter 200.
The fiber optic adapter 200 is configured to interface with a standard LC adapter interface size at one end for mating with a conventional LC connector 300 and at the other end for mating with the miniaturized fiber optic connector 100 of the present invention, as shown in fig. 18.
Alternatively, both interfaces of the optical fiber adapter 200 may be configured as interfaces adapted to the miniaturized optical fiber connector 100 of the present invention, so as to implement the coupling connection between the miniaturized optical fiber connector 100 of the present invention and the miniaturized optical fiber connector 100 of the present invention; or on the premise that one of the interfaces is matched with the miniaturized optical fiber connector 100, corresponding adapter interfaces are arranged according to the type of the connector to be coupled, so that the miniaturized optical fiber connector 100 is coupled and connected with the connectors such as conventional SC, FC, ST and the like.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and it should be understood by those skilled in the art that modifications and equivalents may be made to the specific embodiments of the present invention with reference to the above embodiments, and any modifications and equivalents not departing from the spirit and scope of the present invention are within the scope of the claims appended hereto.
Claims (11)
1. The utility model provides a miniaturized fiber optic connector, includes plug casing, contact pin, spring and ring flange, and the contact pin is inserted and is established in the front end jack of ring flange, its characterized in that: the plug shell is internally provided with a hollow cavity which can accommodate the axial penetration of the flange plate, a spring supporting surface and a flange supporting piece are arranged in the hollow cavity, a spring propping surface and a flange propping surface are arranged on the flange plate, the two ends of the spring are respectively abutted against the spring supporting surface and the spring jacking surface and are in a compressed state, and the flange jacking surface is abutted against the flange supporting piece so as to axially limit the flange plate in the hollow cavity of the plug shell;
The flange support piece is an elastic piece, the flange plate is provided with an extrusion part for extruding the elastic piece, the flange plate is provided with a space for accommodating the elastic piece after rebound, and the spring support surface is arranged on the elastic piece; a central passage through which the flange passes is formed by the elastic member;
The extrusion part of the flange plate is arranged at the rear end of the flange plate, an extrusion surface is arranged on the extrusion part and used for extruding the elastic piece in the flange plate installation process to enable the elastic piece to deform radially so as to expand the central channel, so that the extrusion part passes over the elastic piece, the front end face of the extrusion part is the flange jacking surface, and the extrusion part is abutted to the rear end face of the elastic piece after the elastic piece rebounds.
2. A miniaturized fiber optic connector as set forth in claim 1, wherein: the elastic piece is an elastic arm arranged at the rear end of the hollow cavity, the front end face of the elastic arm is the spring supporting surface, the front end of the flange plate is provided with the spring pressing surface, and the elastic arm is extruded by the flange plate extruding part and deforms in a direction away from the extruding part in the process that the flange plate is arranged in the plug shell from front to back; after the extrusion part passes over the elastic arm, the elastic arm rebounds, and the front end surface of the extrusion part is abutted with the rear end surface of the elastic arm.
3. A miniaturized fiber optic connector as set forth in claim 1, wherein: the plug comprises a plug shell, and is characterized in that the rear end of the plug shell is at least provided with two shell tail covers which are detachably arranged, an elastic arm is arranged on the shell tail cover and used as an elastic piece, the front end face of the elastic arm is used as a spring supporting face, the elastic arm is deformed in the direction away from the extrusion part when being extruded by the flange extrusion part in the process of loading the flange into the plug shell from front to back, the extrusion part passes over the elastic arm and then rebounds, and the front end face of the extrusion part is abutted with the rear end face of the elastic arm.
4. A miniaturized fiber optic connector as set forth in claim 1, wherein: the elastic piece is at least two elastic claws arranged at the rear end of the hollow cavity, one end of each elastic claw is fixed on the plug shell, the end face of the other end is abutted with the front end face of the extrusion part of the flange plate, and the bending part in the middle of each elastic claw is used as a spring supporting surface abutted with the spring.
5. A miniaturized fiber optic connector as set forth in claim 1, wherein: the plug shell is of a left-right split structure or an upper-lower split structure.
6. A miniaturized fiber optic connector as set forth in claim 5, wherein: the flange support piece is arranged at the rear end of the plug shell and sleeved on the flange plate, the rear end of the flange plate is provided with a radially protruding flange limiting part, the front end face of the flange limiting part is used as a flange jacking face and is abutted to the rear end face of the flange support piece, and the front end face of the flange support piece is a spring support face.
7. A miniaturized fiber optic connector as set forth in claim 5, wherein: the flange support piece is arranged at the front end of the plug shell, and the front end face of the flange plate is used as the flange jacking face and is abutted against the rear end face of the flange support piece; the rear end of the plug shell is provided with a spring supporting part, the front end face of the spring supporting part is the spring supporting face, and the rear end of the flange plate penetrates through the spring supporting part.
8. A miniaturized fiber optic connector according to any one of claims 1-7, wherein: the rear end of the flange plate is provided with an anti-rotation structure which is matched with the plug shell.
9. A miniaturized fiber optic connector as set forth in claim 8, wherein: the anti-rotation structure is a plane arranged on the circumference of the rear end of the flange, and the plane is matched with the inner side wall of the plug shell to prevent the flange from rotating.
10. A miniaturized fiber optic connector according to any one of claims 1-7, wherein: the outer side face of the plug shell is provided with an elastic fin, and the elastic fin is provided with a locking protrusion matched with the optical fiber adapter.
11. An optical fiber adapter comprising an adapter housing and a ceramic ferrule, characterized in that: the adapter housing is of an integrally formed structure, one end of the adapter housing is provided with an interface for connecting the optical fiber connector according to any one of claims 1-10, and the other end of the adapter housing is provided with an interface for connecting the optical fiber connector according to any one of claims 1-10 or an interface for connecting a standard LC optical fiber connector; a sleeve integrally formed with the adapter housing is arranged in the adapter housing, and the ceramic sleeve is arranged in the sleeve; the cylindrical surface of the sleeve is provided with a U-shaped opening which is axially formed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210745608.1A CN115201972B (en) | 2022-06-29 | 2022-06-29 | Miniaturized optical fiber connector and optical fiber adapter |
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| CN202210745608.1A CN115201972B (en) | 2022-06-29 | 2022-06-29 | Miniaturized optical fiber connector and optical fiber adapter |
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| CN115201972B true CN115201972B (en) | 2024-10-11 |
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| CN114660728A (en) * | 2022-03-23 | 2022-06-24 | 中航光电科技股份有限公司 | Optical fiber contact element and optical fiber connector |
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| CN101644807B (en) * | 2009-09-08 | 2011-03-30 | 中航光电科技股份有限公司 | Novel optical fiber contact piece |
| JP4971412B2 (en) * | 2009-12-10 | 2012-07-11 | ヒロセ電機株式会社 | Plug electrical connector |
| CN106199847B (en) * | 2016-08-31 | 2019-06-07 | 中航光电科技股份有限公司 | Anti-rotation ejector half optical fiber contact and the optical fiber connector plug for using the contact |
| US10754098B2 (en) * | 2017-04-07 | 2020-08-25 | Senko Advanced Components, Inc. | Behind the wall optical connector with reduced components |
| CN216344531U (en) * | 2021-09-27 | 2022-04-19 | 上海锐迈五金有限公司 | Elastic sealing ball flange |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114660728A (en) * | 2022-03-23 | 2022-06-24 | 中航光电科技股份有限公司 | Optical fiber contact element and optical fiber connector |
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Effective date of registration: 20221212 Address after: 101, No. 45-3, Gongye Road, Hualong Town, Panyu District, Guangzhou, Guangdong 510000 Applicant after: AVIC Optoelectronics (Guangdong) Co.,Ltd. Address before: 471000 No. 10, Zhoushan Road, Luoyang area, China (Henan) pilot Free Trade Zone, Henan Province Applicant before: AVIC JONHON OPTRONIC TECHNOLOGY Co.,Ltd. |
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