CN217133425U - Auxiliary fixing device for optical fiber connector - Google Patents

Abstract

The utility model provides an optical fiber connector auxiliary fixing device which is configured to connect an optical fiber head of a laser with an optical fiber connector, the optical fiber connector auxiliary fixing device comprises a connecting piece, and an installation through hole is arranged on the connecting piece along the axial direction; the fastening piece is fixedly arranged at one end in the mounting through hole, the fastening piece is fixedly sleeved on the optical fiber head, the end part of one end, provided with the fastening piece, of the connecting piece is pressed against the first step, and the first step is formed between the optical fiber head and the laser body of the laser; the optical fiber connector and the connecting piece synchronously rotate, the optical fiber connector extends into the other end of the mounting through hole and is in threaded connection with the optical fiber connector, and meanwhile, the part of the optical fiber connector abuts against a second step arranged inside the other end of the mounting through hole. The utility model provides an optical fiber splice auxiliary fixture is through addding optical fiber splice auxiliary fixture and appear becoming flexible in order to prevent between laser instrument and the fiber interface to improve the reliability that the laser instrument used.

Description

Auxiliary fixing device for optical fiber connector

Technical Field

The utility model belongs to the technical field of the fiber laser, especially, relate to an optical fiber splice auxiliary fixture.

Background

The SMA interface is a common optical fiber interface, is commonly used with various laser optical fiber output lasers, is fixed by adopting a thread fixing mode, and is convenient to use. But in the use process of connecting the two, the problem of connection reliability also exists, for example, the interface is loosened. In the field of high-energy laser, the change of the position of the optical fiber head of the laser means that the optical fiber head deviates from the intersection point, and output light cannot enter the optical fiber completely, so that the interface is easy to burn out, and even the whole laser fails. The current standard interface has no anti-loose function, and the interface is easy to be stressed and loosened in the repeated use process, particularly the use process of the armored SMA interface, and is easy to cause problems in the use process.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an auxiliary fixing device of optical fiber splice under the condition that does not change standard interface, through addding auxiliary fixing device of optical fiber splice in order to prevent to appear becoming flexible between laser instrument and the optical fiber interface to improve the reliability that the laser instrument used.

To achieve the purpose, the utility model adopts the following technical proposal:

there is provided a fiber stub auxiliary fixture configured to connect a fiber stub of a laser with a fiber stub, the fiber stub auxiliary fixture including:

the connecting piece is provided with a mounting through hole along the axial direction;

the fastener is fixedly arranged at one end in the mounting through hole, the fastener is fixedly sleeved on the optical fiber head, the end part of the connector, at which the fastener is arranged, at one end is pressed against a first step, and the first step is formed between the optical fiber head and the laser body of the laser;

the optical fiber connector and the connecting piece synchronously rotate, the optical fiber connector extends into the other end of the mounting through hole and is in threaded connection with the optical fiber connector, and meanwhile, part of the optical fiber connector abuts against and presses on a second step arranged inside the other end of the mounting through hole.

Preferably, the fastener comprises:

and the circular ring piece is fixedly arranged at one end of the mounting through hole, sleeved on the optical fiber head and fixedly connected with the optical fiber head.

Preferably, the fastener comprises:

the annular ratchet wheel comprises an annular body and ratchets arranged along the circumferential direction of the annular body, the annular body is fixedly arranged at one end of the mounting through hole, the rotating direction of the ratchets is the same as the rotating direction of the threads of the optical fiber connector, and the ratchets tightly clamp the optical fiber connector.

Preferably, the ratchets are uniformly distributed along the circumferential direction of the circular ring-shaped body.

Preferably, the thickness of the circular ring piece or the circular ratchet wheel ranges from 0.3mm to 1 mm.

Preferably, the included angle alpha between the ratchet teeth and the circular ring-shaped body ranges from 25 degrees to 30 degrees.

Preferably, the fastener is welded with the mounting through hole; or the fastener is in interference fit with the mounting through hole;

or the other end of the mounting through hole is provided with a third step, one end of the fastener is pressed against the third step, and the fastener is connected with the mounting through hole through a key.

Preferably, be provided with the clamping part on the outer wall of optical fiber head, the clamping part includes a plurality of edges the arch of optical fiber head's axial setting, a plurality of archs are followed the axial of optical fiber head sets up in parallel, the ratchet with protruding cooperation.

Preferably, the other end of the installation through hole is provided with a hexagonal hole, and the hexagonal hole is matched with the shape and the size of the optical fiber connector.

Preferably, the outer wall of the connecting piece is provided with a platform.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses in, utilize optic fibre to assist fixing device further to fasten the optic fibre head and the optical fiber splice of laser instrument to guarantee between optic fibre head and the optical fiber splice after using a period, not hard up can not appear, cause both knecks to appear burning out, become invalid even.

During installation, the optical fiber head of the laser is inserted into the fastener inside the connecting piece from one end of the installation through hole, meanwhile, the optical fiber connector is inserted into the connecting piece from the other end of the installation through hole, the connecting piece and the optical fiber connector rotate synchronously, and the optical fiber connector is in threaded connection with the optical fiber head. And in the process of rotating the thread, the optical fiber connector pushes the connecting piece to synchronously move along the axial direction by utilizing the second step until the connecting piece is pressed against the first step between the laser body and the optical fiber head until the connecting piece can not move along the axial direction, which indicates that the connecting piece and the fastening piece are in place and are connected and fastened. Because of connecting piece, fastener all with optical fiber head fastening connection, can not relative rotation between connecting piece and the optical fiber splice, consequently guaranteed that optical fiber head and optical fiber splice can not relative rotation, consequently, the screw thread can not appear not hard up between laser instrument and the optical fiber splice.

The auxiliary fixing device for the optical fiber connector is simple in structure and low in cost, and after the auxiliary fixing device is installed, the anti-loosening capacity of the optical fiber connector is greatly enhanced, and the reliability of a laser in the working process is improved.

Drawings

Fig. 1 is an exploded view of an optical fiber connector auxiliary fixing device according to the present invention;

fig. 2 is a schematic view of the internal structure of the auxiliary fixing device for optical fiber connectors of the present invention;

fig. 3 is a front view of the auxiliary fixing device for optical fiber connector of the present invention;

fig. 4 is a sectional view taken along a line a-a of fig. 3 according to the present invention;

FIG. 5 is a schematic view of a fastener of the present invention at a first angle;

FIG. 6 is a second angle schematic of the fastener of the present invention;

fig. 7 is a third angle schematic view of the fastener of the present invention;

fig. 8 is a schematic structural view of a connecting member according to the present invention;

fig. 9 is a cross-sectional view of a connector according to the present invention.

Wherein, 1, connecting piece; 11. a first hole; 12. a second hole; 13. a third aperture; 14. a platform; 10. a first step; 20. a second step; 30. a third step;

2. a fastener; 21. a circular ratchet wheel; 211. a circular body; 212. a ratchet;

3. a laser 31, a laser body; 32. an optical fiber head; 321. a clamping part; 3211. a protrusion; 4. an optical fiber splice; 41. a threaded connection; 42. a core.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 4, the laser 3 includes a laser body 31 and a fiber head 32 mounted on the laser body 31, the first step 10 is formed between the laser body 31 and the fiber head 32, and the fiber head 32 is used for emitting laser light. Specifically, the optical fiber connector 4 includes a threaded connection portion 41 and a core portion 42, and the core portion 42 passes through the threaded connection portion 41 and is fixedly connected to the threaded connection portion 41. When the laser 3 is connected to the optical fiber connector 4, the core 42 is inserted into the optical fiber head 32, the laser 3 is connected to the screw connection 41, and the laser light emitted from the laser 3 is transmitted to the core 42 through the optical fiber head 32.

In this embodiment, for solving laser instrument 3 and optical fiber splice 4 after using a period of time, threaded connection easily appears not hard up problem between the two, an optical fiber splice auxiliary fixture is provided, this optical fiber splice auxiliary fixture is configured as optical fiber head 32 and optical fiber splice 4 of connecting laser instrument 3, above-mentioned optical fiber splice auxiliary fixture includes connecting piece 1 and fastener 2, wherein, be provided with the installation through-hole along the axial on the connecting piece 1, fastener 2 fixed mounting is in the one end in the installation through-hole, fastener 2 is fixed to overlap and locates on optical fiber head 32, the tip of the one end that fastener 2 was installed to connecting piece 1 supports and presses on first step 10, form first step 10 between optical fiber head 32 and the laser instrument body 31 of laser instrument 3. Optical fiber splice 4 rotates with connecting piece 1 is synchronous, and optical fiber splice 4 stretches into the other end of installation through-hole, and with optical fiber head 32 threaded connection, simultaneously, optical fiber splice 4's part supports to press on the second step 20 of the inside setting of the other end of installation through-hole.

In this embodiment, the optical fiber head 32 and the optical fiber connector 4 of the laser 3 are further fastened by using the optical fiber auxiliary fixing device, so that the optical fiber head 32 and the optical fiber connector 4 are ensured not to be loosened after being used for a period of time, and burnout or even failure at the interface between the optical fiber head 32 and the optical fiber connector is caused.

Specifically, during installation, the optical fiber head 32 of the laser 3 is inserted into the fastener 2 inside the connector 1 from one end of the installation through hole, meanwhile, the optical fiber connector 4 is inserted into the connector 1 from the other end of the installation through hole, the connector 4 and the optical fiber connector 4 rotate synchronously, and the optical fiber connector 4 is in threaded connection with the optical fiber head 32. In the process of rotating the optical fiber connector 4 by the thread, the optical fiber connector 4 pushes the connecting piece 1 to move axially synchronously by using the second step 20 until the connecting piece 1 is pressed against the first step 10 between the laser body 31 and the optical fiber head 32 until the connecting piece 1 cannot move axially, which indicates that the connecting piece 1 and the fastening piece 2 are in place and fastened. Because of connecting piece 1, fastener 2 all with optic fibre head 32 fastening connection, can not relative rotation between connecting piece 1 and the optic fibre connects 4, consequently guaranteed that optic fibre head 32 and optic fibre connect 4 can not relative rotation, consequently, the screw thread can not appear not hard up between laser instrument 3 and the optic fibre connects 4.

The auxiliary fixing device for the optical fiber connector is simple in structure and low in cost, and after the auxiliary fixing device is installed, the anti-loosening capacity of the optical fiber connector 4 is greatly enhanced, and the reliability of the laser 3 in the working process is improved.

Preferably, the fastener 2 is welded to the mounting through hole. In other embodiments, the fastener 2 is an interference fit with the mounting through-hole. It can also be that one end of the installation through hole is provided with a third step 30, one end of the fastening piece 2 is pressed against the third step 30, and the fastening piece 2 is connected with the installation through hole through a key.

Preferably, as shown in fig. 5 to 7, the fastening member 2 includes a circular ring-shaped ratchet 21, the circular ring-shaped ratchet 21 includes a circular ring-shaped body 211, and ratchet teeth 212 arranged along the circumference of the circular ring-shaped body 211, the ratchet teeth 212 are arranged circumferentially on the circumference of the circular ring-shaped body 211, the circular ring-shaped body 211 is fixedly mounted at one end of the mounting through hole, the rotation direction of the ratchet teeth 212 is the same as the rotation direction of the thread of the optical fiber connector 4, and the ratchet teeth 212 clamp the optical fiber head 32.

In this embodiment, the clamping force between the ratchet 212 and the optical fiber head 32 is utilized to ensure that the ratchet 212 and the optical fiber head 32 are not loosened, and in addition, because the rotation direction of the ratchet 212 is the same as the screwing direction of the threads of the optical fiber connector 4 and the optical fiber head 32, the ratchet 212 can only rotate towards one direction and cannot be reversed, so that the loosening between the optical fiber head 32 and the optical fiber connector 4 is further ensured.

Specifically, the annular ratchet 21 is made of steel, so that the structural strength is ensured, and the cost is reduced.

Preferably, the ratchets 212 are uniformly distributed along the circumferential direction of the annular body 211, so as to ensure that the clamping force between the ratchets 212 and the optical fiber head 32 is uniform along the circumferential direction, and ensure that the optical fiber head 32 does not incline.

Further preferably, a clamping portion 321 is disposed on an outer wall of the optical fiber head 32, the clamping portion 321 includes a plurality of protrusions 3211 disposed along an axial direction of the optical fiber head 32, the plurality of protrusions 3211 are disposed in parallel along the axial direction of the optical fiber head 32, and the ratchet 212 is engaged with the protrusions 3211.

The ratchet 212 is clamped in the protrusion 3211, and during the rotation of the connector 1, the ratchet 212 rotates to be clamped in the protrusion 3211, so as to further ensure that the circular ratchet 21 does not reverse, and the optical fiber head 32 and the optical fiber connector 4 are loosened.

For the fixing manner between the circular ratchet 21 and the connecting piece 1, preferably, the circular ratchet 21 is welded in the mounting through hole, and in other embodiments, the circular body 211 of the circular ratchet 21 may be in interference fit with the mounting through hole. The other end of the installation through hole is provided with a third step 30, one end of the circular ratchet 21 abuts against the third step 30, and the circular ratchet 21 is connected with the installation through hole through a key, so that the circular ratchet 21 cannot rotate relative to the installation through hole.

With respect to the specific structure of the connecting member 1, as shown in fig. 8 and 9, the mounting through hole provided on the connecting member 1 includes a first hole 11, a second hole 12, and a third hole 13 which are sequentially provided along the axial direction and are communicated with each other, wherein the diameter of the second hole 12 is smaller than the diameters of the first hole 11 and the third hole 13, a second step 20 is formed between the first hole 11 and the second hole 12, and a third step 30 is formed between the second hole 12 and the third hole 13.

In other embodiments, the fastener 2 includes a ring member (not shown) fixedly mounted at one end of the mounting through hole, and the ring member is sleeved on the fiber head 32 and fixedly connected with the fiber head 32. The friction force between the ring piece and the optical fiber head 32 is utilized to ensure that the ring piece and the optical fiber head do not rotate relatively, and relative fixation is realized. Specifically, the ring member is welded in the mounting through hole or is in interference fit with the mounting through hole, or the ring member is mounted in the mounting through hole, one end of the ring member abuts against the third step 30, and the ring member is connected with the mounting through hole through a key to prevent relative rotation between the ring member and the mounting through hole.

For the specific structure of the ring member or the circular ratchet 21, the thickness of the ring member or the circular ratchet 21 is preferably 0.3mm to 1 mm. So as to ensure the structural strength of the ring piece or the annular ratchet wheel 21, sufficiently resist the force generated by the reverse rotation of the optical fiber connector 4 and ensure the clamping force between the ring piece or the annular ratchet wheel 21 and the optical fiber connector 32.

Further preferably, the thickness of the ring member or the ring-shaped ratchet 21 is 0.3mm, so that the structural strength is ensured, and the overall structural weight is reduced as much as possible, thereby preventing the auxiliary fixing device for the optical fiber connector from generating downward pressure on the optical fiber head 32 and the optical fiber connector 4 due to the self weight.

Further preferably, the thickness of the ring member or the annular ratchet 21 is 1mm, and when the thickness exceeds 1mm, the structural weight of the ring member or the annular ratchet 21 is too large, which results in a downward pressure on the optical fiber head 32 and the optical fiber connector 4, and affects the alignment accuracy of the optical fiber head 32 and the optical fiber connector 4 along the axial direction. The thickness is too large, the manufacturing difficulty of the ratchet wheel is increased, and the cost is high.

In the present embodiment, the thickness of the ring member and the ring-shaped ratchet 21 is preferably 0.5 mm.

It is further preferred that the angle α between the ratchet teeth 212 and the circular ring shaped body 211 is in the range of 25-45 °. The included angle alpha between the ratchet wheel and the circular ring-shaped body 211 is smaller than 25 degrees, under the condition that the diameter of the circular ring-shaped body 211 is certain, the length of the ratchet 212 needs to be increased to be clamped and matched with the protrusion 3211 on the optical fiber head 32, and the ratchet 212 is formed by punching the ratchet 212 on the circular ring-shaped body 211, so that the number of the ratchet 212 arranged on the circular ring-shaped body 211 is small, and the clamping force of the ratchet 212 and the protrusion 3211 is weakened. When the included angle α between the ratchet wheel and the circular ring-shaped body 211 is greater than 45 °, and the ratchet 212 is engaged with the protrusion 3211 of the fiber head 32, the length of the ratchet 212 remains unchanged, and the increase of the angle α increases the structural size of the circular ring-shaped body 211, which further increases the size of the external connecting piece 1, resulting in an oversize overall structural size. In this embodiment, the included angle α between the upper ratchet and the circular ring body 211 is 30 °.

In the embodiment, the optical fiber connector 4 and the connector 1 rotate synchronously, and the specific connection mode of the two is that in the embodiment, a hexagonal hole is formed in the other end of the installation through hole, and the hexagonal hole is matched with the shape and the size of the optical fiber connector 4. More specifically, the first hole 11 of the installation through hole is an inner hexagonal hole, when the optical fiber splice 4 is installed, the threaded connection portion 41 of the optical fiber splice 4 is located in the inner hexagonal hole, the core portion 42 of the optical fiber splice 4 is inserted into the optical fiber head 32, the end portion of the threaded connection portion 41 of the optical fiber splice 4 abuts against the second step 20, when the optical fiber splice 4 rotates, the annular ratchet 21 also rotates until the optical fiber splice 4 is fastened with the optical fiber head 32 and does not rotate any more, and at this time, the connecting member 1 abuts against the first step 10.

In other embodiments, the specific connection manner of the optical fiber connector 4 and the connector 1 may also be that an axial assembling protrusion is disposed on the outer periphery of the threaded connection portion 41 of the optical fiber connector 4, a groove with a corresponding matching dimension is disposed at a corresponding position in the first hole 11, the length of the groove is disposed along the axial direction, and when the optical fiber connector 4 is assembled with the optical fiber head 32, the assembling protrusion is inserted into the groove to achieve synchronous rotation of the optical fiber connector 4 and the connector 1.

It is also possible to provide an axially disposed fitting projection on the inner wall of the first bore 11, and to provide a groove of a corresponding size at a corresponding position on the outer wall of the threaded connection portion 41 of the optical fiber connector 4, the length of the groove being axially disposed. When the optical fiber connector 4 is assembled with the optical fiber head 32, the assembling protrusion is inserted into the groove, and the synchronous rotation of the optical fiber connector 4 and the connecting piece 1 can be realized.

Preferably, in order to facilitate the rotation of the clamping connection 1 during installation, a platform 14 is provided on the outer wall of the connection 1. The two platforms 14 are symmetrically arranged.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A fiber stub auxiliary fixture, characterized in that it is configured to connect a fiber stub (32) of a laser (3) with a fiber stub (4), the fiber stub auxiliary fixture comprising:

the connecting piece (1) is provided with an installation through hole along the axial direction;

the fastening piece (2) is fixedly arranged at one end in the mounting through hole, the fastening piece (2) is fixedly sleeved on the optical fiber head (32), the end part of one end, provided with the fastening piece (2), of the connecting piece (1) is pressed against the first step (10), and the first step (10) is formed between the optical fiber head (32) and the laser body (31) of the laser (3);

optical fiber splice (4) with connecting piece (1) synchronous revolution, optical fiber splice (4) stretch into the other end of installation through-hole, and with optical fiber head (32) threaded connection, simultaneously, the part of optical fiber splice (4) support press in on second step (20) of the inside setting of the other end of installation through-hole.

2. The fiber optic splice holding device of claim 1, wherein the fastener (2) comprises:

the circular ring piece is fixedly arranged at one end of the mounting through hole, sleeved on the optical fiber head (32) and fixedly connected with the optical fiber head (32).

3. The fiber optic splice holding device of claim 2 wherein the fastener (2) comprises:

the annular ratchet wheel (21) comprises an annular body (211) and ratchets (212) arranged along the circumferential direction of the annular body (211), the annular body (211) is fixedly installed at one end of the installation through hole, the rotating direction of the ratchets (212) is the same as the rotating direction of the threads of the optical fiber connector (4), and the ratchets (212) clamp the optical fiber connector (32).

4. The auxiliary fiber splice holding device of claim 3, wherein said ratchet teeth (212) are uniformly distributed along the circumference of said circular ring-shaped body (211).

5. The auxiliary fixing device for optical fiber splice according to claim 3, characterized in that the thickness of the ring member or the annular ratchet (21) is in the range of 0.3mm-1 mm.

6. The auxiliary fiber optic splice holding device of claim 3, wherein the angle α between said ratchet teeth (212) and said circular ring-shaped body (211) is in the range of 25 ° -30 °.

7. The auxiliary fixing device for optical fiber splice according to any of claims 1-6, characterized in that the fastening member (2) is welded to the mounting through hole; or the fastener (2) is in interference fit with the mounting through hole;

or the other end of the mounting through hole is provided with a third step (30), one end of the fastening piece (2) is pressed against the third step (30), and the fastening piece (2) is connected with the mounting through hole through a key.

8. The auxiliary fixing device for the optical fiber connector as claimed in claim 3, wherein a clamping portion (321) is disposed on an outer wall of the optical fiber head (32), the clamping portion (321) comprises a plurality of protrusions (3211) disposed along an axial direction of the optical fiber head (32), a plurality of protrusions (3211) are disposed in parallel along the axial direction of the optical fiber head (32), and the ratchet (212) is engaged with the protrusions (3211).

9. The auxiliary fixing device for optical fiber splice according to any of claims 1-6, characterized in that the other end of the mounting through hole is provided with a hexagonal hole matching the shape and size of the optical fiber splice (4).

10. The auxiliary fixing device for optical fiber splice according to any of claims 1-6, characterized in that the outer wall of the connecting piece (1) is provided with a platform (14).

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