Bundled optical fiber ferrule

Abstract

The utility model discloses a cluster optical fiber ferrule, which relates to the field of optical elements, and comprises a fixed shell used for connecting a laser, a base is arranged in the fixed shell, a plurality of uniformly arranged positioning holes are formed in the base along the axis direction, and optical fibers penetrate through the positioning holes and are connected with the inner walls of the positioning holes through adhesive. A connecting ring is coaxially fixed to the base along the outer circle, a limiting hole matched with the connecting ring is formed in the shell, the connecting ring penetrates through the limiting hole and is attached to the inner wall of the limiting hole, a limiting ring is further coaxially fixed to the connecting ring, the limiting ring is located in the fixing shell and abuts against the fixing shell, an annular groove is further formed in the connecting ring, and an elastic ring is arranged in the annular groove. The elastic ring is attached to the side, away from the limiting ring, of the fixing shell. According to the invention, the optical fiber arrangement stability can be improved.

Description

Technical Field

[0001] The utility model relates to the field of optical elements, in particular to a clustered optical fiber insert. Background Art

[0002] Lasers have been widely used in many fields. For example, in the field of laser medical equipment, precise minimally invasive treatment using lasers has become increasingly popular. And with the further development of laser technology, laser medical equipment has an increasing demand for high-power laser output.

[0003] The laser includes the ferrule and the optical fiber inside the ferrule. According to the number of optical fibers, it is also divided into single-fiber lasers and clustered lasers. Single-fiber lasers have the advantages of simple structure and easy to obtain high beam quality output. However, due to the limitations of optical fiber thermal effects, thermal damage and other effects, single-fiber lasers are still limited in achieving high-power laser output. Therefore, in order to achieve ultra-high power output, clustered fiber technology has been widely used in high-power laser fiber output.

[0004] With regard to the above-mentioned related technologies, the bundled optical fiber mainly increases the output power by bundling the optical fibers. When the optical fibers are arranged by bundling, if the optical fibers are only bound from the outside of the optical fiber bundle, the optical fiber bundle is easy to shift in the ferrule and cause mutual entanglement during the movement or use of the bundled laser. If each optical fiber is bundled and positioned individually and then the positioned optical fibers are gathered and bundled, it will take more assembly time and is inconvenient to use. Therefore, there is an urgent need for a ferrule structure that can improve the stability of optical fiber arrangement. Utility Model Content

[0005] In order to improve the arrangement stability of bundled optical fibers, the present application provides a bundled optical fiber ferrule.

[0006] The present application provides a clustered optical fiber ferrule, which adopts the following technical solution:

[0007] A clustered optical fiber plug-in comprises a fixed shell for connecting a laser, wherein a base is arranged inside the fixed shell, and a plurality of evenly arranged positioning holes are opened on the base along the axial direction, the optical fiber passes through the positioning holes and is connected to the inner wall of the positioning holes through an adhesive, a connecting ring is coaxially fixed along the outer circle of the base, a limiting hole adapted to the connecting ring is arranged on the outer shell, the connecting ring passes through the limiting hole and fits with the inner wall of the limiting hole, the connecting ring is also coaxially fixed with the limiting ring, the limiting ring is located in the fixed shell and contacts the fixed shell, the connecting ring is also provided with an annular groove, an elastic ring is arranged in the annular groove, and the elastic ring fits with the side of the fixed shell away from the limiting ring.

[0008] By adopting the above technical solution, the fixed shell limits the radial displacement of the base through the cooperation of the limiting hole and the connecting ring, and the connecting ring clamps the elastic ring through the ring groove, so that the elastic ring and the limiting ring cooperate to clamp the fixed shell, thereby limiting the axial displacement of the base, and the base positions the optical fiber through the positioning hole and the adhesive, which improves the stability of the optical fiber arrangement and the heat dissipation performance of the optical fiber.

[0009] Optionally, one end of the base along the optical fiber guiding direction is set as an input end, and one end of the positioning hole entering the input end is provided with a guide groove, and the diameter of the guide groove gradually decreases along the axis toward the positioning hole.

[0010] By adopting the above technical solution, the optical fiber is placed into the positioning hole along the input end, and the guide groove is conducive to improving the convenience when assembling the optical fiber.

[0011] Optionally, an extension edge is fixed along the circumferential direction on a side of the elastic ring away from the fixed shell, and a movable gap is provided between the extension edge and the fixed shell.

[0012] By adopting the above technical solution, the extended edge is easy to hold, thereby improving the convenience when removing the elastic ring.

[0013] Optionally, the base includes a sleeve and a positioning core, the sleeve has a through hole along the axial direction, the positioning core is located in the through hole and in contact with the inner wall of the through hole, the positioning core has a plurality of arc grooves 1 along the axial direction, the sleeve has a plurality of arc grooves 2 connected to the through hole, the arc grooves 1 and the arc grooves 2 are connected one by one and constitute a positioning hole.

[0014] By adopting the above technical solution, the sleeve limits the positioning core through the through hole and the locking piece, and the arc groove one and the arc groove two cooperate to position the optical fiber. When the optical fiber needs to be replaced, the positioning core is removed from the through hole, thereby releasing the positioning of the optical fiber, which is beneficial to improving the convenience of replacing and assembling the optical fiber.

[0015] Optionally, the locking piece includes an insert and a connecting screw, the sleeve has a slot one opened along the diameter direction, the positioning core has a slot two corresponding to the slot one, the insert passes through the slot one and is inserted in the slot two, the connecting screw passes through the insert and is threadedly connected to the sleeve, so that the insert locks the positioning core.

[0016] By adopting the above technical solution, the sleeve limits the insert through the connecting screw, so that the insert cooperates with the slot one and the slot two to limit the positioning core, thereby limiting the displacement of the positioning core along the axial direction.

[0017] Optionally, one end of the positioning core along the length direction is fixedly connected to a movable disk, the movable disk is provided with a limiting hole communicating with the arc-shaped groove, and the optical fiber passes through the limiting hole.

[0018] By adopting the above technical solution, the moving plate drives the positioning core to move when it moves, and the positioning plate is easy to hold, thereby improving the convenience of disassembling and assembling the positioning core.

[0019] Optionally, a plurality of protrusions are fixed to a side of the movable disk close to the positioning core, the sleeve is provided with grooves adapted to the protrusions, the protrusions are inserted into the grooves and fit against the inner walls of the grooves.

[0020] By adopting the above technical solution, the groove cooperates with the protrusion, and then the rotation of the positioning core around the axis is limited by the limit plate, thereby improving the connection stability between the sleeve and the positioning core.

[0021] Optionally, a plurality of anti-skid grooves are provided on the outer side of the movable disk along the circumferential direction.

[0022] By adopting the above technical solution, the anti-slip groove is conducive to the convenience of moving the limiting plate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The fixed shell limits the radial displacement of the base through the cooperation of the limiting hole and the connecting ring. The connecting ring clamps the elastic ring through the ring groove, so that the elastic ring and the limiting ring cooperate to clamp the fixed shell, thereby limiting the axial displacement of the base. The base cooperates with the positioning hole and the adhesive to position the optical fiber, which improves the stability of the optical fiber arrangement and the heat dissipation performance of the optical fiber;

[0025] 2. The sleeve limits the positioning core through the through hole and the locking piece, and the arc groove 1 and the arc groove 2 cooperate to position the optical fiber. When the optical fiber needs to be replaced, the positioning core is removed from the through hole to release the positioning of the optical fiber, which is conducive to improving the convenience of replacing and assembling the optical fiber;

[0026] 3. The sleeve limits the positioning core through the through hole and the locking piece, and the arc groove 1 and the arc groove 2 cooperate to position the optical fiber. When the optical fiber needs to be replaced, the positioning core is removed from the through hole to release the positioning of the optical fiber, which is conducive to improving the convenience of replacing and assembling the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of Example 1.

[0028] Figure 2 This is a schematic diagram intended to highlight the base structure.

[0029] Figure 3 It is a structural schematic diagram of Example 2.

[0030] Figure 4 It is a structural schematic diagram of Example 3.

[0031] Explanation of the reference numerals: 1. fixed shell; 11. limiting hole; 2. base; 21. positioning hole; 22. connecting ring; 221. limiting ring; 222. annular groove; 223. elastic ring; 224. extension edge; 23. guide groove; 24. positioning core; 241. arc groove one; 242. slot two; 243. movable plate; 244. bump; 245. anti-skid groove; 25. sleeve; 251. through hole; 252. arc groove two; 253. slot one; 254. groove; 3. locking piece; 31. insert; 32. connecting screw. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0033] The embodiment of the present application discloses a bundled optical fiber ferrule.

[0034] Embodiment 1:

[0035] Reference Figure 1 and Figure 2 , a clustered optical fiber ferrule comprises a fixing shell 1 and a base 2. The fixing shell 1 is designed to be tightly connected with a laser to ensure the stability and sealing between the ferrule and the laser.

[0036] Reference Figure 1 and Figure 2 A connecting ring 22 is coaxially fixed to the outer circle of the base 2, and a limiting hole 11 adapted to the connecting ring 22 is opened in the fixed shell 1. The connecting ring 22 passes through the limiting hole 11 on the fixed shell 1 and fits with the inner wall of the limiting hole 11. The fixed shell 1 limits the radial displacement of the base 2 through the limiting hole 11.

[0037] Reference Figure 1 and Figure 2 A limiting ring 221 is fixed at one end of the connecting ring 22. The limiting ring 221 is located in the fixed shell 1 and contacts the fixed shell 1. An annular groove 222 is provided at the end of the connecting ring 22 away from the limiting ring 221. An elastic ring 223 is provided in the annular groove 222. The elastic ring 223 is in contact with the side of the fixed shell 1 away from the limiting ring 221. The elastic ring 223 provides a buffering effect when the plug is subjected to external force. The elastic ring 223 and the limiting ring 221 are used together to limit the axial movement of the connecting ring 22, further improving the stability of the plug.

[0038] Reference Figure 1 and Figure 2The base 2 is provided with a number of evenly arranged positioning holes 21 along the axial direction. The number of positioning holes 21 can be two, three, four, etc. The axes of all positioning holes 21 are parallel to each other and evenly distributed. The optical fiber passes through the positioning hole 21 and fits with the inner wall of the positioning hole 21. The adhesive is added to the positioning hole 21 by dispensing. After the adhesive is cured, the optical fiber is firmly connected to the inner wall of the positioning hole 21, so that the stable arrangement of the optical fiber is achieved through the limiting effect of the positioning hole 21.

[0039] Reference Figure 1 and Figure 2 One end of the base 2 along the optical fiber assembly direction is set as an input end, and a guide groove 23 corresponding to the positioning hole 21 is provided at the input end. The diameter of the guide groove 23 gradually decreases along the axis toward the positioning hole 21, which is conducive to the smooth introduction of the optical fiber and reduces the friction and damage of the optical fiber during the insertion of the optical fiber into the positioning hole 21. At the same time, the design of the guide groove 23 also improves the convenience and accuracy of optical fiber assembly.

[0040] Reference Figure 1 and Figure 2 The implementation principle of a clustered optical fiber ferrule in the embodiment of the present application is as follows: the ferrule is connected to the laser through the fixed shell 1, and the base 2 and the fixed shell 1 are connected to each other by the cooperation of the connecting ring 22, the elastic ring 223 and the limiting ring 221, and the elastic pad provides additional buffer protection for the base 2. The base 2 limits the optical fiber through the adhesive and the positioning hole 21, improves the arrangement stability of the optical fiber, and at the same time, the optical fibers are separated from each other, which improves the heat dissipation effect and prolongs the service life of the optical fiber.

[0041] Embodiment 2:

[0042] Reference Figure 3 The difference between this embodiment and the first embodiment is that the elastic ring 223 is fixed with an extension edge 224, and the extension edge 224 is located at a position where the elastic ring 223 is far away from the fixed shell 1, and there is a movable gap between the fixed shell 1 and the extension edge 224. When the base 2 and the fixed shell 1 need to be disassembled, the elastic ring 223 is separated from the fixed shell 1 along the gap between the extension edge 224 and the fixed shell 1, and then after the elastic ring 223 is removed, the limit on the axial displacement of the fixed shell 1 and the base 2 can be released, which is conducive to improving the convenience of removing the base 2.

[0043] Embodiment 3:

[0044] Reference Figure 4The difference between this embodiment and the embodiment 1 is that the structure of the base 2 is different. The base 2 in this embodiment includes a sleeve 25 and a positioning core 24. The sleeve 25 is provided with a through hole 251 along the axial direction, and the positioning core 24 is located in the through hole 251 and keeps contact with the inner wall of the through hole 251. The positioning core 24 is further provided with a plurality of arc grooves 1 241 along the axial direction. These arc grooves 1 241 correspond to and are connected with the arc grooves 2 252 provided on the sleeve 25, and together constitute the positioning hole 21.

[0045] Reference Figure 4 When assembling the optical fiber, first apply the adhesive to the arc groove 1 241, then arrange the optical fiber along the arc groove 1 241, and finally send the positioning core 24 and the light into the through hole 251 at the same time, so that the arc groove 1 241 and the arc groove 2 252 cooperate to limit the optical fiber.

[0046] Reference Figure 4 The sleeve 25 is also provided with a locking member 3, which includes an insert 31 and a connecting screw 32. The sleeve 25 is provided with a slot 1 253 along the diameter direction, and the positioning core 24 is provided with a slot 2 242 corresponding to the slot 1 253, and the number of the slot 1 253 and the slot 2 242 is at least one. The insert 31 passes through the slot 1 253 and is inserted into the slot 2 242, and the connecting screw 32 passes through the insert 31 and is threadedly connected to the sleeve 25, thereby fastening the insert 31 in an appropriate position, so that it can effectively lock the positioning core 24. When the optical fiber needs to be replaced or repaired, the restriction on the positioning core 24 is released by removing the insert 31. When the positioning core 24 is removed, the positioning core 24 takes out all the optical fibers, thereby improving the convenience of repairing the optical fiber.

[0047] Reference Figure 4 A movable disk 243 is fixedly connected to one end of the positioning core 24 along the length direction. The movable disk 243 is provided with a limiting hole 11 connected to the arc groove 241. The optical fiber passes through the limiting hole 11, and the limiting disk is in conflict with the sleeve 25. When the limiting disk is moved, the limiting disk drives the positioning core 24 to move, thereby improving the convenience of disassembling and assembling the positioning core 24. In order to facilitate the operator to hold and move the positioning core 24, a plurality of anti-slip grooves 245 are also provided on the outer side of the movable disk 243 along the circumferential direction.

[0048] Reference Figure 4 The movable disk 243 is also fixed with a plurality of protrusions 244 on one side close to the positioning core 24, and correspondingly, the sleeve 25 is provided with grooves 254 adapted to the protrusions 244. When the positioning core 24 is inserted into the through hole 251, the protrusions 244 correspond to the grooves 254 one by one, and the protrusions 244 are inserted into the corresponding grooves 254, and the protrusions 244 fit the inner walls of the grooves 254, thereby limiting the rotation of the movable disk 243 in the circumferential direction, thereby improving the connection stability of the positioning core 24 and the sleeve 25.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bundled optical fiber ferrule, comprising a fixing shell (1) for connecting a laser, characterized in that: The fixing shell (1) is provided with a base (2) therein, the base (2) is provided with a plurality of evenly arranged positioning holes (21) along the axial direction, the optical fiber passes through the positioning hole (21) and is connected to the inner wall of the positioning hole (21) through an adhesive, a connecting ring (22) is coaxially fixed to the base (2) along the outer circle, the outer shell is provided with a limiting hole (11) adapted to the connecting ring (22), the connecting ring (22) passes through the limiting hole (11) and fits with the inner wall of the limiting hole (11), the connecting ring (22) is also coaxially fixed with a limiting ring (221), the limiting ring (221) is located in the fixing shell (1) and contacts the fixing shell (1), the connecting ring (22) is also provided with an annular groove, an elastic ring (223) is provided in the annular groove, and the elastic ring (223) fits with a side of the fixing shell (1) away from the limiting ring (221).

2. The optical fiber ferrule according to claim 1, characterized in that: One end of the base (2) along the optical fiber guiding direction is set as an input end, and the end of the positioning hole (21) that is opened into the input end is provided with a guide groove (23), and the diameter of the guide groove (23) gradually decreases along the axis in the direction close to the positioning hole (21).

3. The optical fiber ferrule according to claim 1, characterized in that: An extension edge (224) is fixed along the circumferential direction on one side of the elastic ring (223) away from the fixed shell (1), and a movable gap is provided between the extension edge (224) and the fixed shell (1).

4. The optical fiber ferrule according to claim 1, characterized in that: The base (2) comprises a sleeve (25) and a positioning core (24); the sleeve (25) is provided with a through hole (251) along the axial direction; the positioning core (24) is located in the through hole (251) and contacts the inner wall of the through hole (251); the positioning core (24) is provided with a plurality of arc-shaped grooves (241) along the axial direction; the sleeve (25) is provided with a plurality of arc-shaped grooves (252) connected to the through hole (251); the arc-shaped grooves (241) and the arc-shaped grooves (252) are connected in a one-to-one correspondence and form the positioning hole (21); the sleeve (25) is provided with a locking member (3); the locking member (3) is used to lock the positioning core (24) in the sleeve (25).

5. The optical fiber bundle ferrule according to claim 4, characterized in that: The locking member (3) comprises an inserting piece (31) and a connecting screw (32); the sleeve (25) is provided with a first slot (253) along a diameter direction; the positioning core (24) is provided with a second slot (242) corresponding to the first slot (253); the inserting piece (31) passes through the first slot (253) and is inserted into the second slot (242); the connecting screw (32) passes through the inserting piece (31) and is threadedly connected to the sleeve (25), so that the inserting piece (31) locks the positioning core (24).

6. The optical fiber ferrule according to claim 4, characterized in that: One end of the positioning core (24) along the length direction is fixedly connected to a moving disk (243), and the moving disk (243) is provided with a limiting hole (11) communicating with the arc-shaped groove 1 (241), and the optical fiber passes through the limiting hole (11).

7. The optical fiber bundle ferrule according to claim 6, characterized in that: A plurality of protrusions (244) are fixed on one side of the movable plate (243) close to the positioning core (24); the sleeve (25) is provided with grooves (254) adapted to the protrusions (244); the protrusions (244) are inserted into the grooves (254) and fit against the inner wall of the grooves (254).

8. The optical fiber ferrule according to claim 6, characterized in that: The outer side of the movable plate (243) is provided with a plurality of anti-slip grooves (245) along the circumferential direction.

Images