CN213659018U

CN213659018U - Optical fiber connector

Info

Publication number: CN213659018U
Application number: CN202022372961.9U
Authority: CN
Inventors: 冯鹏君; 周唐汉
Original assignee: Shenzhen Shenglongfeng Industrial Co ltd
Current assignee: Shenzhen Shenglongfeng Industrial Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-07-09
Anticipated expiration: 2030-10-22

Abstract

The application provides an optical fiber connector, includes: the optical fiber connector comprises a main body, a connecting channel and a connecting piece, wherein the main body is provided with a connecting channel which extends left and right and is used for inserting an optical fiber, the connecting channel is provided with two guiding sections which are arranged left and right and are arranged in a way that the diameter of the connecting channel is reduced towards the middle, and a crimping section which is positioned between the two guiding sections; the pressing piece is arranged in the accommodating groove, and a boss is arranged on the surface of the pressing piece, which is far away from the compression joint section; the locking piece is sleeved outside the main body and the pressing piece, the locking piece is provided with a locking position which is used for abutting against the boss so that the pressing piece and the pressing section limit the optical fiber movement together, and an unlocking position which is separated from the boss so as to release the limitation on the optical fiber movement, and the locking piece moves in the left-right direction and is switched between the locking position and the unlocking position. The application provides an optical fiber connector, simple structure, the equipment of being convenient for just can improve optical fiber connection's reliability.

Description

Optical fiber connector

Technical Field

The application belongs to the technical field of optical fiber connectors, and more specifically relates to an optical fiber connector.

Background

With the development of the 5G technology in the communication field, the optical fiber communication required by the 5G communication is wider and wider, and the required optical fiber connector is small in size and strong in function. This requires high power reliability for the internal structure of the fiber optic connector. Meanwhile, the requirement of the assembly environment of a photoelectric film block construction field is combined, and the requirement on the convenience of assembly is higher. Therefore, a connector which is more convenient to install and has high connection reliability needs to be developed to meet the use requirements of customers.

Disclosure of Invention

It is an object of the present application to overcome the above-mentioned deficiencies of the prior art and to provide an optical fiber connector which aims at facilitating the assembly while improving the reliability of the optical fiber connection.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

an optical fiber connector comprising:

the optical fiber connector comprises a main body, a connecting channel and a connecting piece, wherein the main body is arranged in a strip shape and extends in the left and right directions, the main body is provided with the connecting channel which is arranged in a penetrating manner on the left and right sides and used for inserting optical fibers, the connecting channel is provided with a left guide section, a crimping section and a right guide section which are sequentially arranged, the aperture of the left guide section is gradually reduced from left to right, the aperture of the right guide section is gradually enlarged from left to right, the main body is provided with an accommodating groove communicated with the crimping section on the peripheral side, and the cross section of the crimping section is in an;

the pressing piece is arranged in the accommodating groove, and a boss is arranged on the surface of the pressing piece, which is far away from the compression joint section;

the locking piece is of an annular structure and is sleeved outside the main body and the pressing piece, the locking piece is provided with a locking position which is used for abutting against the boss so that the pressing piece and the pressing section jointly limit the movement of the optical fiber and an unlocking position which is separated from the boss so as to remove the limitation on the movement of the optical fiber, and the locking piece moves in the left-right direction and is switched between the locking position and the unlocking position.

Optionally, the pressing member has a pressing groove formed on a surface thereof facing the connecting channel, and when the locking member is located at the locking position, the pressing groove and the pressing section jointly press the optical fiber to limit the movement of the optical fiber.

Optionally, the groove bottom of the crimping groove is inclined towards two ends to form two lead-in inclined surfaces and a central crimping surface, the crimping surface and the crimping section are used for pressing the optical fiber together, and the lead-in inclined surfaces are inclined towards the direction of the crimping surface.

Optionally, the pressing member is provided with a brace abutting against the main body on a surface facing the connection passage, the brace and the boss are arranged at left and right intervals on a horizontal projection, and the locking member is close to or reaches the brace when located at the unlocking position.

Optionally, the two supporting blocks are provided with a gap for avoiding the connecting channel.

Optionally, a clamping block is disposed at one end of the pressing member, the main body has a clamping groove disposed corresponding to the clamping block, and the clamping block is disposed in the clamping groove to limit movement of the pressing member and the main body in the left-right direction.

Optionally, the fixture block is disposed at an end of the pressing member close to the brace block.

Optionally, the boss has a first guide surface that is inclined, and the locking member is provided with a second guide surface that is inclined at an inner surface facing the pressing member, and the locking member moves along the first guide surface and the second guide surface to switch between the unlocking position and the locking position.

Optionally, the second guide surface is annular.

Optionally, the optical fiber connector further includes a ferrule, the ferrule has a left-right through insertion hole matched with the optical fiber, an insertion hole for inserting the ferrule is formed at one end of the connection channel, and when the ferrule is inserted into the insertion hole, the insertion hole coincides with a central axis of the crimping section.

The application provides fiber connector's beneficial effect lies in: compared with the prior art, the boss is matched with the locking piece, so that the convenience of the operation of sleeving the locking piece into the main body can be improved, the pressing piece can provide enough clamping force for the optical fiber, and the quality of optical fiber connection is ensured. The provision of the guide section in the connecting passage can facilitate the insertion operation of the optical fiber. In addition, the connecting channel is contracted to the crimping section, the transverse section of the crimping section is in an arc shape or a V shape, so that the first optical fiber and the second optical fiber tend to be downwards positioned in the middle of the section when being extruded by the pressing piece, the automatic alignment of the two optical fibers is realized, and the reliability of optical fiber connection is improved. Therefore, the optical fiber connector provided by the application has the advantages of simple structure, convenience in assembly and capability of improving the reliability of optical fiber connection.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

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

FIG. 2 is an exploded view of a fiber optic connector according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of the structure of FIG. 1 taken along the length thereof;

FIG. 4 is a cross-sectional view taken at A-A of the structure of FIG. 3;

FIG. 5 is a cross-sectional view of the body in an embodiment of the present application;

FIG. 6 is a schematic view of a compression element in an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

10. a main body; 101. a left guide section; 102. a crimping section; 103. a right guide section; 104. a containing groove; 105. A card slot; 106. inserting holes; 20. pressing parts; 21. a boss; 201. a first guide surface; 22. a crimping groove; 202. leading in an inclined plane; 203. a crimping surface; 23. a clamping block; 24. a support block; 30. a lock; 301. a second guide surface; 40. a ceramic ferrule; 51. a first optical fiber; 52. a second optical fiber.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be further noted that, in the embodiment of the present invention, the XYZ rectangular coordinate system established in fig. 1 is defined: one side in the positive direction of the X axis is defined as the front, and one side in the negative direction of the X axis is defined as the back; one side in the positive Y-axis direction is defined as the left side, and one side in the negative Y-axis direction is defined as the right side; the side in the positive direction of the Z axis is defined as the upper side, and the side in the negative direction of the Z axis is defined as the lower side.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-6, an exemplary optical fiber connector provided herein is illustrated.

The optical fiber connector includes a body 10, a pressing member 20, and a locking member 30.

Referring to fig. 5, the main body 10 is disposed in a strip shape and extends in the left-right direction, the main body 10 is provided with a connection channel penetrating in the left-right direction for inserting an optical fiber, the connection channel has a left guide section 101, a crimping section 102, and a right guide section 103 sequentially disposed, a hole diameter of the left guide section 101 is gradually reduced from left to right, a hole diameter of the right guide section 103 is gradually enlarged from left to right, the main body 10 is provided with a receiving groove 104 communicating with the crimping section 102 on a surface perpendicular to the connection channel, and a cross section of the crimping section 102 is arc-shaped or V-shaped. In the illustrated structure, the main body 10 has a rectangular cross section at the receiving groove 104, and the receiving groove 104 is opened on the upper surface of the main body 10. In other embodiments, the receiving groove 104 may be disposed on the lower surface, the left surface, or the right surface, which is not limited herein. In other embodiments, the cross-section of the main body 10 at the receiving groove 104 may also be circular or other shapes, which is not limited herein.

Referring to fig. 2 and 3, the pressing member 20 is disposed in the receiving groove 104, and a protrusion 21 is disposed on a surface of the pressing member 20 facing away from the pressing section 102.

The locking member 30 is of an annular structure and is sleeved outside the main body 10 and the pressing member 20, the locking member 30 has a locking position for abutting against the boss 21 so that the pressing member 20 and the crimping section 102 jointly limit the movement of the optical fiber and an unlocking position for leaving the boss 21 to release the limitation of the movement of the optical fiber, and the locking member 30 moves in the left-right direction to switch between the locking position and the unlocking position.

The optical fibers are inserted into the connection passages from both ends of the body 10, respectively. For convenience of description, the optical fiber inserted from the left side of the body 10 is named a first optical fiber 51, and the optical fiber inserted from the right side of the body 10 is named a second optical fiber 52. The first optical fiber 51 and the second optical fiber 52 enter the crimping section 102 from two ends of the connecting channel through the left guide section 101 and the right guide section 103, respectively, and collide with each other in the crimping section 102. The pressing member 20 is placed in the receiving groove 104, and the locking member 30 is sleeved into the main body 10, at this time, the locking member 30 is sleeved outside the pressing member 20 and the main body 10. The locking member 30 is moved to the position of the boss 21, and at this time, the locking member 30 presses the boss 21 to move the pressing member 20 and the main body 10 toward each other, so as to clamp and fix the first optical fiber 51 and the second optical fiber 52 located in the crimping section 102.

When the scheme is applied to the pre-embedded connector, the first optical fiber 51 is a pre-embedded optical fiber, the pre-embedded optical fiber is inserted into the ferrule 40 and is fixedly connected with the ferrule 40, and the ferrule 40 is connected with the main body 10 so that the pre-embedded optical fiber protrudes out of one end of the ferrule 40 and is inserted into the connecting channel and reaches the crimping section 102. Then, the pressing member 20 is placed in the receiving groove 104, and the locking member 30 is sleeved in the main body 10, at this time, the locking member 30 is sleeved outside the pressing member 20 and the main body 10. The ferrule 40, the embedded optical fiber, the body 10, the pressing member 20, and the locking member 30 are integrated together as a unitary structure. When the second optical fiber 52 is connected in the field, the outer shell and the protective layer of the second optical fiber 52 are stripped, and then the second optical fiber 52 is inserted into the connecting channel from the other side of the main body 10, which is far away from the ferrule 40, and reaches the crimping section 102 and is abutted to the pre-buried optical fiber. The locking piece 30 is moved from the unlocking position to the locking position, so that the second optical fiber 52 is fixed, and then the connection between the embedded optical fiber and the second optical fiber 52 is realized. By last, the fiber connector of this scheme of adoption, when second optic fibre 52 is met at the scene, only need insert second optic fibre 52 and connect passageway to first optic fibre 51 butt to it can to move latch fitting 30 from the unblock position to the locking position, it is very convenient to operate.

Since the connecting channel of the main body 10 is provided with the left guide section 101 and the right guide section 103, the central axes of the left guide section 101, the right guide section 103 and the crimping section 102 are coincident, and the diameters of the left guide section 101 and the right guide section 103 are reduced toward the direction of the crimping section 102 to guide the first optical fiber 51 and the second optical fiber 52 into the crimping section 102. This arrangement can facilitate the insertion operation of the first optical fiber 51 and the second optical fiber 52. In addition, the connecting channel is contracted to the crimping section 102, the transverse section of the crimping section 102 is in an arc shape or a V shape, so that the first optical fiber 51 and the second optical fiber 52 tend to be downward and positioned at the middle position of the section when being extruded by the pressing piece 20, the automatic alignment of the first optical fiber 51 and the second optical fiber 52 is realized, the reliability of optical fiber connection is improved, and the connection quality is prevented from being influenced by the dislocation of the first optical fiber 51 and the second optical fiber 52.

It will be appreciated that the left and

right guide segments

101 and 103 may be a single slope conical segment or a plurality of conical segments of the same or different slopes and connected in series. When the left guide section 101 and/or the right guide section 103 are sequentially connected by a plurality of conical sections, the conical sections may be connected by a transition section with a single tube diameter, as long as the whole of the left guide section 101 and the right guide section 103 is inclined toward the crimping section 102 to guide the optical fiber into the crimping section 102.

In the configuration shown in FIG. 4, the crimp segments 102 are V-shaped in cross-section with the V-shaped opening facing the follower 20. This arrangement is favorable to reducing the structure cost of manufacture. In other embodiments, the cross-section of the crimp segment 102 may also be circular, and is not limited herein.

In the illustrated structure, the boss 21 has a first guide surface 201 inclined, and the locking member 30 moves along the guide surface to move between the unlocking position and the locking position, thereby improving the convenience of operation. The locking element 30 is provided with a second guide surface 301 on the inner surface facing the pressing element 20 to facilitate the movement of the locking element 30 between the unlocking position and the locking position. In other embodiments, the first guide surface 201 may be provided on the boss 21 and the locking member 30 may not be provided with the second guide surface 301, or the second guide surface 301 may be provided on the locking member 30 and the first guide surface 201 may not be provided on the boss 21, which is not limited herein.

Preferably, the second guide surface 301 is formed in a ring shape so that the locking member 30 can be engaged with the boss 21 regardless of the angle at which it is inserted into the main body 10, thereby improving the convenience of operation.

It will be appreciated that locking element 30 is a closed loop structure having a fixed interior space. The boss 21 is raised above the surface of the pressing member 20. When the locking member 30 is in the unlocking position, the pressing member 20 has a space for movement in the up-down direction, and the pressing member 20 cannot restrict the movement of the first optical fiber 51 and the second optical fiber 52. When the locking member 30 is in the locking position, the boss 21 occupies the inner space of the locking member 30 and the pressing member 20 moves toward the main body 10 and presses the first optical fiber 51 and the second optical fiber 52 together with the main body 10, thereby fixing the first optical fiber 51 and the second optical fiber 52. However, if the boss 21 is not provided, it is difficult to secure the connection reliability of the first optical fiber 51 and the second optical fiber 52 because the locking member 30 is sleeved in the main body 10 and the pressing member 20 as a whole is difficult to form an interference fit in a pressing state with the locking member 30 and it is difficult to provide a sufficient clamping force to the first optical fiber 51 and the second optical fiber 52. The boss 21 can solve the problems, and is simple in structure and beneficial to reducing the structural design and production cost.

In conclusion, the optical fiber connector provided by the embodiment has a simple structure, is convenient to assemble, and can improve the reliability of optical fiber connection.

In another embodiment of the present application, referring to fig. 4 and 6, the pressing member 20 has a pressing groove 22 formed on a surface thereof facing the connecting passage, and when the locking member 30 is located at the locking position, a groove bottom of the pressing groove 22 and the pressing section 102 jointly press the optical fiber to limit the movement of the optical fiber. The groove bottom of the crimp groove 22, the groove wall, and the crimp segment 102 together limit the radial movement space of the optical fibers (the first optical fiber 51 and the second optical fiber 52). The provision of the crimp groove 22 (as compared to a design without the crimp groove 22) increases the limitation of the radial movement space of the optical fiber, and particularly in the case where the crimp groove 22 is shallow and the optical fiber protrudes from the crimp groove 22, the provision can reduce the probability of the optical fiber leaving the connection channel, thereby facilitating the alignment of the optical fiber.

In another embodiment of the present application, referring to fig. 3 and 6, two ends of the groove bottom of the crimping groove 22 are inclined to form two lead-in slopes 202 and a central crimping face 203, the crimping face 203 and the crimping section 102 are used together for pressing the optical fiber, and the lead-in slopes 202 are inclined toward the crimping face 203 to guide the optical fiber into the crimping face 203.

The provision of the lead-in ramp 202 guides the insertion of the optical fiber into the crimp segment 102, reducing the difficulty of the operation of inserting the optical fiber into the crimp segment 102. The crimp face 203 is disposed opposite the crimp segment 102 and is configured to collectively press against the optical fiber to secure the optical fiber when the locking element 30 is in the locked position.

In the structure shown in fig. 6, the pressure contact surface 203 is a flat surface to reduce the production cost. In other embodiments, the crimping surface 203 may also be an arc surface protruding upward, and a midpoint of the arc surface is opposite to a midpoint of the crimping segment 102, so that when the crimping surface 203 and the crimping segment 102 press the optical fiber, the optical fiber moves to the midpoint position under the guidance of the crimping surface 203, which is beneficial to automatically aligning the first optical fiber 51 and the second optical fiber 52.

In another embodiment of the present application, referring to fig. 6, the pressing member 20 is provided with a supporting block 24 abutting against the main body 10 on a surface facing the connecting passage, and the supporting block 24 and the boss 21 are arranged at a left-right interval on a horizontal projection. When the locking piece 30 is located at the unlocking position, the locking piece 30 is close to or located at the position of the supporting block 24, the pressing piece 20 is lifted by the supporting block 24, the locking piece 30, the pressing piece 20 and the main body 10 are mutually abutted to avoid the pressing piece 20 from shaking, and the pressing piece 20 is ensured to have a distance with the connecting channel at the supporting block 24 without obstructing the insertion operation of the optical fiber. After the optical fiber is inserted into the crimping section 102, the locking member 30 moves to the position of the boss 21 so that the pressing member 20 rotates around the supporting block 24 as a center point and presses against the optical fiber.

In the illustrated construction, there are two of the brace pieces 24 to provide more stable support. A gap avoiding the connecting channel is left between the two support blocks 24 to avoid blocking the insertion of the optical fiber.

In another embodiment of the present application, referring to fig. 2, the pressing member 20 is provided with a latch 23, the main body 10 is provided with a slot 105 corresponding to the latch 23, and the latch 23 is disposed in the slot 105 to limit the movement of the pressing member 20 and the main body 10 in the left-right direction. In the illustrated structure, the latch 23 is T-shaped and disposed at one side end of the pressing member 20, and in other embodiments, the latch 23 may have other shapes or be disposed at other positions of the pressing member 20 as long as it does not affect the movement of the locking member 30 when it is engaged with the engaging groove 105 formed on the main body 10. Through the matching design of the clamping groove 105 and the clamping block 23, the movement of the pressing piece 20 and the main body 10 in the left-right direction is limited, and the structure is simple. In combination with the above, since the pressing plate rotates to press the optical fiber, the pressing plate has a certain moving space in the accommodating groove 104 and in the up-down and left-right directions, and the arrangement of the fixture block 23 and the clamping groove 105 restricts the movement of the pressing plate in the left-right direction, thereby ensuring the smooth switching of the locking member 30 between the locking position and the unlocking position.

When the optical fiber connector provided by the present application is applied to a pre-buried optical fiber connector, please refer to fig. 2 and 3, the optical fiber connector further includes a ferrule 40, the ferrule 40 has a jack penetrating from left to right and matching with an optical fiber, a plug hole 106 for the ferrule 40 to be inserted is formed at one end of the connection channel, in the structure shown in the figure, the plug hole 106, the left guide section 101, the crimping section 102 and the right guide section 103 are sequentially connected to form a connection channel together. When the ferrule 40 is inserted into the insertion hole 106, the insertion hole coincides with the central axis of the crimp segment 102. In actual operation, the embedded fiber is inserted into the ferrule 40 and fixed by the ferrule 40, and at this time, one end of the embedded fiber protrudes out of the ferrule 40. One end of the ferrule 40, from which the embedded optical fiber protrudes, is inserted into the plug hole 106 and fixedly connected to the main body 10, and at this time, the embedded optical fiber is also inserted into the connection channel. The design reduces the difficulty of alignment and improves the convenience of operation.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An optical fiber connector, comprising:

the optical fiber connector comprises a main body, a connecting channel and a connecting piece, wherein the main body is arranged in a strip shape and extends in the left and right directions, the main body is provided with the connecting channel which is arranged in a penetrating mode in the left and right directions and used for inserting optical fibers, the connecting channel is provided with a left guide section, a crimping section and a right guide section which are sequentially arranged, the aperture of the left guide section is gradually reduced from left to right, the aperture of the right guide section is gradually enlarged from left to right, the peripheral side of the main body is provided with an accommodating groove communicated with the crimping section, and the cross section of the crimping section is in an arc;

2. The optical fiber connector of claim 1 wherein said compression member defines a crimp groove in a surface thereof facing said connection passage, said crimp groove and said crimp segment cooperating to compress said optical fiber to limit movement of said optical fiber when said locking member is in said locked position.

3. The optical fiber connector of claim 2 wherein the groove bottom of the crimp groove is sloped toward both ends to form two lead-in ramps and a centered crimp surface, the crimp surface being for pressing against the optical fiber in cooperation with the crimp segment, the lead-in ramps being sloped toward the crimp surface.

4. The optical fiber connector according to claim 1, wherein said pressing member is provided with a brace abutting against said main body at a surface facing said connecting passage, said brace being spaced from said boss in a horizontal projection, said locking member being located near or at said brace when said locking member is located at said unlocking position.

5. The fiber optic connector of claim 4, wherein said spacer has two and leaves a void that avoids said connecting passage.

6. The optical fiber connector according to claim 4, wherein said pressing member is provided at one end with a latching piece, said main body has a latching groove provided corresponding to said latching piece, and said latching piece is disposed in said latching groove to restrict the movement of said pressing member and said main body in the left-right direction.

7. The fiber optic connector of claim 6, wherein said latch is disposed at an end of said compression member adjacent said brace.

8. The fiber optic connector of claim 1, wherein the boss has a sloped first guide surface, the locking element having a sloped second guide surface on an inner surface facing the compression element, the locking element moving along the first and second guide surfaces to transition between the unlocked and locked positions.

9. The fiber optic connector of claim 8, wherein the second guide face is annular.

10. The optical fiber connector according to any one of claims 1 to 9, further comprising a ferrule having a left-right through insertion hole for engaging with an optical fiber, wherein an insertion hole for inserting the ferrule is formed at one end of the connection passage, and when the ferrule is inserted into the insertion hole, the insertion hole coincides with a central axis of the crimping section.