Optical fiber ferrule butt joint device

Abstract

The utility model relates to an optical fiber ferrule butt joint device which comprises a shell, four groups of clamping adjusting assemblies are arranged in the shell in parallel, and the clamping adjusting assemblies can slide in the shell along mutually parallel directions of the clamping adjusting assemblies; an optical fiber ferrule penetrates through the shell and the clamping adjusting assemblies and is clamped by the clamping adjusting assemblies, the two clamping adjusting assemblies clamp one optical fiber ferrule, the sliding directions of the two clamping adjusting assemblies clamping the same optical fiber ferrule are perpendicular to each other, and the ends of the two optical fiber ferrules abut against each other; the clamping adjusting assembly comprises an adjusting knob, the clamping adjusting assembly is kept at a fixed position under the abutting action of the spring and the adjusting knob, the adjusting knob can adjust the position of the clamping adjusting assembly in the shell, and therefore the fiber cores of the two optical fiber insertion cores can be aligned. According to the device, the optical fiber end faces of two optical fiber inserts can be accurately aligned, the influence of the insert core inner diameter tolerance, the insert core outer diameter tolerance and the optical fiber outer diameter tolerance can be avoided by adjusting the clamping adjusting assembly, and the device is suitable for most existing optical fiber insert core types.

Description

Technical Field

[0001] The utility model relates to the technical field of fiber optic ferrule docking, in particular to a fiber optic ferrule docking device. Background Art

[0002] Fiber optic ferrule docking makes two polished fiber optic end faces accurately aligned and in close contact, aiming to ensure that two optical fibers can be accurately and stably connected together, so as to achieve efficient transmission of optical signals.

[0003] As a component for fixing optical fibers, the accuracy of the fiber optic ferrule directly affects the docking effect of two optical fibers. Due to manufacturing process limitations, there are inevitably ferrule inner diameter tolerances and ferrule outer diameter tolerances in the fiber optic ferrule, and there are also optical fiber outer diameter tolerances in the optical fibers in the fiber optic ferrule. The combination of the ferrule inner diameter tolerance and the optical fiber outer diameter tolerance will cause docking misalignment even when two fiber optic ferrules are completely coaxially docked; the ferrule outer diameter tolerance will affect whether two optical fibers are in a coaxial position when the fiber optic ferrule docking device clamps the fiber optic ferrule.

[0004] In order to achieve high-precision alignment of two fiber optic ferrules, for example, Chinese invention patent CN201910840450.4 discloses a fiber optic ferrule, a fiber optic ferrule docking device and a forming method of a fiber optic ferrule. The method of using nickel plating for optical fibers to produce an integrated fiber optic ferrule (additive manufacturing) is used to eliminate the influence of the ferrule inner diameter tolerance, and a coupler with a V-groove docking method is used to ensure the coaxiality of the fiber cores, thereby ignoring the influence of the outer diameter tolerance of the optical fibers caused by the manufacturing process, greatly improving the optical fiber coupling efficiency, reducing the loss of the optical fiber coupling node to the level of the fusion point, and basically achieving lossless.

[0005] However, the method of using nickel plating for optical fibers to produce an integrated fiber optic ferrule (additive manufacturing) in the above-mentioned published document has a high cost, and the coupler with a V-groove has a narrow application range, and can only be used for the docking of the fiber optic ferrules produced by the above-mentioned additive manufacturing, and is not applicable to a large number of ceramic ferrules commonly used at present. Moreover, the coupler with a V-groove cannot completely eliminate the influence of the ferrule outer diameter tolerance. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a fiber optic ferrule docking device for solving the above problems existing in the prior art.

[0007] In order to solve the above problems, the utility model provides a fiber optic ferrule docking device, comprising a shell, in which four groups of clamping and adjusting components are arranged in parallel, and the clamping and adjusting components can slide in the shell along directions parallel to each other; the fiber optic ferrule is inserted into the shell and the clamping and adjusting components and clamped by the clamping and adjusting components, two groups of clamping and adjusting components clamp one fiber optic ferrule, and the sliding directions of the two groups of clamping and adjusting components clamping the same fiber optic ferrule are perpendicular, and the ends of the two fiber optic ferrules are in contact with each other; the clamping and adjusting components include an adjusting knob, and the clamping and adjusting components are kept in a fixed position by the contact action of a spring and an adjusting knob, and the adjusting knob can adjust the position of the clamping and adjusting components in the shell, and thus the cores of the two fiber optic ferrules can be aligned.

[0008] The optical fiber ferrule docking device provided by the utility model also has the following technical features:

[0009] Furthermore, the clamping and adjusting assembly also includes an adjusting clamp and a driven clamp. The adjusting knob is abuttingly connected to the adjusting clamp. The optical fiber ferrule is clamped between the adjusting clamp and the driven clamp. The adjusting clamp and the driven clamp can slide in the housing.

[0010] Furthermore, the adjusting clamping plate is connected to the housing via an adjusting spring, and the adjusting spring causes the adjusting clamping plate to have a tendency to move away from the driven clamping plate and to contact the adjusting knob.

[0011] Furthermore, the clamping adjustment assembly also includes a pin, one end of the pin is fixedly connected to the adjustment clamping plate, and the other end of the pin is elastically connected to the shell through an adjustment spring.

[0012] Furthermore, the driven clamping plate is connected to the housing via a resisting spring, and the resisting spring makes the driven clamping plate have a tendency to resist the adjusting clamping plate.

[0013] Furthermore, both the adjusting clamping plate and the driven clamping plate are provided with clamping grooves with a cross section in the form of an isosceles right triangle. When the adjusting clamping plate and the driven clamping plate are in contact with each other, the overall cross section of the two clamping grooves is rectangular.

[0014] Further, the initial unadjusted position of the clamping adjustment assembly causes the two fiber ferrules to be coaxial.

[0015] Furthermore, the adjusting knob is threadably matched with the housing.

[0016] Furthermore, the adjustment direction of the adjustment knob is consistent with the sliding direction of the clamping adjustment component that it interferes with.

[0017] Furthermore, the two groups of clamping and adjusting components clamping the same optical fiber ferrule respectively clamp the front end position and the rear end position of the optical fiber ferrule.

[0018] The utility model has the following beneficial effects: the device can accurately align the optical fiber end faces of two optical fiber connectors by using the clamping and adjusting assembly. By adjusting the clamping and adjusting assembly, the influence of the inner diameter tolerance of the ferrule, the outer diameter tolerance of the ferrule, and the outer diameter tolerance of the optical fiber can be avoided, and it is applicable to most existing types of optical fiber ferrules. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic exploded view of the structure of the housing of the utility model;

[0021] Figure 3 It is a perspective view of the clamping and adjusting assembly of the utility model;

[0022] Figure 4 It is a front view of the clamping and adjusting assembly of the utility model;

[0023] Figure 5 is Figure 1 a sectional view along line A-A;

[0024] Figure 6 is an exploded view of the structure of the clamping and adjusting assembly and a part of the housing;

[0025] In the figure, the reference numerals are: housing 1, adjusting housing 11, fixed housing 12;

[0026] Clamping and adjusting assembly 2, adjusting knob 21, adjusting clamping plate 22, adjusting spring 221, driven clamping plate 23, abutting spring 231, pin 24;

[0027] Optical fiber ferrule 3. Detailed Embodiment

[0028] The utility model will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0029] As Figures 1 to 6 shown in the embodiment of the optical fiber ferrule docking device of the utility model, the optical fiber ferrule docking device includes a housing 1, a clamping and adjusting assembly 2, and an optical fiber ferrule 3; wherein, two mutually abutted optical fiber ferrules 3 are commonly inserted through the housing 1 and the clamping and adjusting assembly 2, and the optical fiber ferrule 3 is clamped by the clamping and adjusting assembly 2; the optical fiber ferrule 3 in the figure includes a ferrule body and an optical fiber body, the optical fiber body is inserted through the ferrule body, and the ferrule body and the optical fiber body are fixedly connected. Generally speaking, the optical fiber ferrule 3 also includes a ferrule base (not shown in the figure), and applying an appropriate elastic force on the ferrule base can make the ends of the two optical fiber ferrules 3 abut against each other.

[0030] Specifically, the housing 1 includes an adjusting housing 11 and a fixed housing 12 which are fixedly connected, and the housing 1 is divided into two parts to facilitate the installation of the clamping adjustment component 2; the housing 1 as a whole can be a cuboid with a rectangular bottom surface, and the optical fiber core 3 penetrates the housing 1 along the length direction of the housing 1.

[0031] Four groups of clamping and adjusting components 2 are arranged in parallel in the housing 1. The clamping and adjusting components 2 can slide in the housing 1 along directions parallel to each other. The clamping and adjusting components 2 can be arranged to be parallel to the bottom surface of the housing 1. Two groups of clamping and adjusting components 2 clamp one optical fiber ferrule 3. The sliding directions of the two groups of clamping and adjusting components 2 clamping the same optical fiber ferrule 3 are perpendicular, and the ends of the two optical fiber ferrules 3 are in conflict with each other. By adjusting the sliding of the two groups of clamping and adjusting components 2 clamping the optical fiber ferrule 3, the alignment direction of the optical fiber ferrule can be adjusted.

[0032] The clamping adjustment assembly 2 includes an adjustment knob 21, which is held in a fixed position by the resistance of a spring and the adjustment knob 21. The adjustment knob 21 can adjust the position of the clamping adjustment assembly 2 in the housing 1, and thus align the cores of the two optical fiber ferrules 3.

[0033] When the device is in use, two optical fiber ferrules 3 are respectively inserted from both ends of the housing 1, and one optical fiber ferrule 3 is clamped and fixed in the housing 1 by two clamping and adjusting components 2. At this time, the positions of the two clamping and adjusting components 2 in the housing 1 are adjusted by adjusting knobs 21. The adjustment directions of the two clamping and adjusting components 2 are perpendicular to each other, so the adjustment range is wide, and the optical fiber end faces of the two optical fiber ferrules 3 can be accurately aligned after adjustment.

[0034] The device utilizes a clamping adjustment component 2 to precisely align the fiber end faces of two fiber optic ferrules 3. By adjusting the clamping adjustment component 2, the influence of the ferrule inner diameter tolerance, the ferrule outer diameter tolerance, and the fiber outer diameter tolerance can be avoided, and is applicable to most existing fiber optic ferrule types.

[0035] In one embodiment of the present application, preferably, the clamping and adjusting assembly 2 also includes an adjusting clamp 22 and a driven clamp 23, and the adjusting knob 21 is connected to the adjusting clamp 22 to change the position of the adjusting clamp 22; the optical fiber ferrule 3 is clamped between the adjusting clamp 22 and the driven clamp 23, and the adjusting clamp 22 and the driven clamp 23 can slide in the housing 1; the scheme of clamping the optical fiber ferrule 3 by the adjusting clamp 22 and the driven clamp 23 makes it easier to insert the optical fiber ferrule 3 into the clamping and adjusting assembly 2 and clamp and fix it by the clamping and adjusting assembly 2.

[0036] In an embodiment of the present application, preferably, the adjusting clamping plate 22 is connected to the housing 1 through an adjusting spring 221, and the adjusting spring 221 makes the adjusting clamping plate 22 tend to move away from the driven clamping plate 23 and abut against the adjusting knob 21; at this time, since the adjusting knob 21 is in abutting connection with the adjusting clamping plate 22, the elastic force of the adjusting spring 221 will directly act on the adjusting knob 21, and at this time, adjusting the adjusting knob 21 will squeeze or relax the adjusting spring 221; in this way, on the one hand, it is ensured that the adjusting clamping plate 22 is maintained in a fixed position within the housing 1, and on the other hand, the adjusting knob 21 and the adjusting clamping plate 22 can be kept in an abutting state, so that the adjustment of the adjusting knob 21 is more accurate.

[0037] In an embodiment of the present application, preferably, the clamping adjustment assembly 2 further includes a pin 24. One end of the pin 24 is fixedly connected to the adjusting clamping plate 22, and the other end of the pin 24 is elastically connected to the housing 1 through the adjusting spring 221. The pin 24 makes the adjusting spring 221 tend to push the adjusting clamping plate 22 towards the adjusting knob 21, so that the adjusting knob 21 and the adjusting clamping plate 22 are kept in an abutting state.

[0038] In an embodiment of the present application, preferably, the driven clamping plate 23 is connected to the housing 1 through a abutting spring 231, and the abutting spring 231 makes the driven clamping plate 23 tend to abut against the adjusting clamping plate 22; in this way, after the optical fiber ferrule 3 is clamped and fixed between the driven clamping plate 23 and the adjusting clamping plate 22, the driven clamping plate 23 also has a tendency to push the adjusting clamping plate 22 towards the adjusting knob 21. On the one hand, the clamping of the optical fiber ferrule 3 by the driven clamping plate 23 and the adjusting clamping plate 22 is more stable, and on the other hand, the adjusting knob 21 and the adjusting clamping plate 22 are kept in an abutting state.

[0039] In an embodiment of the present application, preferably, both the adjusting clamping plate 22 and the driven clamping plate 23 are provided with clamping grooves having an isosceles right triangle cross-section. When the adjusting clamping plate 22 and the driven clamping plate 23 abut, the overall cross-section of the two clamping grooves is rectangular. In this way, when the adjusting clamping plate 22 and the driven clamping plate 23 clamp the optical fiber ferrule 3, two surfaces are tangent to the optical fiber ferrule 3, so that the optical fiber ferrule 3 can be clamped more firmly and the displacement of the optical fiber ferrule 3 can be prevented.

[0040] In an embodiment of the present application, preferably, the adjusting clamping plate 22 is disposed within the adjusting housing 11, and the driven clamping plate 23 is disposed within the fixed housing 12. In this way, the adjusting knob 21 is disposed within the adjusting housing 11. During processing and production, it can be ensured that the two adjusting knobs 21 acting on the same optical fiber ferrule 3 are perpendicular to each other, avoiding errors during the assembly of the housing 1; in addition, corresponding grooves for accommodating the clamping plates are provided within the adjusting housing 11 and the fixed housing 12, and sufficient space for the clamping plates to slide is provided in the adjusting housing 11 and the fixed housing 12.

[0041] In one embodiment of the present application, preferably, the initial unadjusted position of the clamping and adjusting assembly 2 coaxializes the two optical fiber ferrules 3. When the clamping and adjusting assembly 2 is adjusted to the initial position and the two optical fiber ferrules 3 are inserted, if the two optical fiber ferrules 3 have no large outer diameter tolerances, the two optical fiber ferrules 3 can be directly aligned at this time without adjustment.

[0042] In one embodiment of the present application, preferably, the adjusting knob 21 is in threaded cooperation with the housing 1. Specifically, a cylindrical groove is provided on the housing 1, and an internal thread is provided in the cylindrical groove. The adjusting knob 21 includes a cylindrical section with an external thread on its outer wall. The height of the internal thread is greater than the height of the external thread to enable the adjusting knob 21 to be adjustable. One end of the cylindrical section of the adjusting knob 21 is provided with a contact section that contacts the adjusting clamp plate 22. The other end of the cylindrical section of the adjusting knob 21 is set as an adjusting section, which is used to connect a fine adjustment device such as a micrometer fine adjustment knob to adjust the adjusting knob 21. In the figure, the adjusting section of the adjusting knob 21 is set as an internal hexagon provided in the cylindrical section, so that the adjusting knob 21 can be recessed into the housing 1 to be protected by the housing 1. Of course, the adjusting section can also be set in other connection forms that can connect to the fine adjustment device.

[0043] In one embodiment of the present application, preferably, the adjusting direction of the adjusting knob 21 is the same as the sliding direction of the clamping and adjusting assembly 2 with which it contacts to ensure the accuracy of adjustment.

[0044] In one embodiment of the present application, preferably, the two sets of clamping and adjusting assemblies 2 that clamp the same optical fiber ferrule 3 respectively clamp the front end position and the end position of the optical fiber ferrule 3, that is, the two sets of clamping and adjusting assemblies 2 are as far away from each other as possible on the premise of ensuring clamping, so as to make the adjustment more accurate.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An optical fiber ferrule docking device, characterized in that: The invention comprises a housing (1), wherein four groups of clamping adjustment components (2) are arranged in parallel in the housing (1), and the clamping adjustment components (2) can slide in directions parallel to each other in the housing (1); an optical fiber ferrule (3) is inserted into the housing (1) and the clamping adjustment components (2) and clamped by the clamping adjustment components (2); two groups of clamping adjustment components (2) clamp one optical fiber ferrule (3), and the sliding directions of the two groups of clamping adjustment components (2) clamping the same optical fiber ferrule (3) are perpendicular, and the ends of the two optical fiber ferrules (3) are in contact with each other; the clamping adjustment component (2) comprises an adjusting knob (21), and the clamping adjustment component (2) is held in a fixed position by the contact action of a spring and the adjusting knob (21), and the adjusting knob (21) can adjust the position of the clamping adjustment component (2) in the housing (1), and thus the cores of the two optical fiber ferrules (3) can be aligned.

2. The optical fiber ferrule docking device according to claim 1, characterized in that: The clamping and adjusting assembly (2) further comprises an adjusting clamping plate (22) and a driven clamping plate (23); the adjusting knob (21) is abuttingly connected to the adjusting clamping plate (22); the optical fiber ferrule (3) is clamped between the adjusting clamping plate (22) and the driven clamping plate (23); and the adjusting clamping plate (22) and the driven clamping plate (23) are slidable in the housing (1).

3. The optical fiber ferrule docking device according to claim 2, characterized in that: The adjusting clamping plate (22) is connected to the housing (1) via an adjusting spring (221), and the adjusting spring (221) causes the adjusting clamping plate (22) to have a tendency to move away from the driven clamping plate (23) and to abut against the adjusting knob (21).

4. The optical fiber ferrule docking device according to claim 3, characterized in that: The clamping adjustment assembly (2) further comprises a pin (24), one end of the pin (24) being fixedly connected to the adjustment clamping plate (22), and the other end of the pin (24) being elastically connected to the housing (1) via an adjustment spring (221).

5. The optical fiber ferrule docking device according to claim 2, characterized in that: The driven clamping plate (23) is connected to the housing (1) via a resisting spring (231), and the resisting spring (231) enables the driven clamping plate (23) to have a tendency to resist the adjusting clamping plate (22).

6. The optical fiber ferrule docking device according to claim 2, characterized in that: The adjusting clamping plate (22) and the driven clamping plate (23) are both provided with clamping grooves with a cross section in the form of an isosceles right triangle. When the adjusting clamping plate (22) and the driven clamping plate (23) are in contact, the overall cross section of the two clamping grooves is rectangular.

7. The optical fiber ferrule docking device according to claim 1, characterized in that: The initial unadjusted position of the clamping adjustment assembly (2) makes the two optical fiber ferrules (3) coaxial.

8. The optical fiber ferrule docking device according to claim 1, characterized in that: The adjusting knob (21) is threadably matched with the housing (1).

9. The optical fiber ferrule docking device according to claim 1, characterized in that: The adjustment direction of the adjustment knob (21) is consistent with the sliding direction of the clamping adjustment component (2) that it abuts against.

10. The optical fiber ferrule docking device according to claim 1, characterized in that: The two groups of clamping adjustment components (2) clamping the same optical fiber ferrule (3) respectively clamp the front end position and the rear end position of the optical fiber ferrule (3).

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