Optical fiber patch cord plugging tool

Abstract

The utility model relates to the technical field of power transmission and transformation optical fiber connector plugging, in particular to an optical fiber patch cord plugging tool. The optical fiber patch cord plugging tool comprises an inner cylinder, the inner diameter of the front end of the inner cylinder is matched with the inner diameter of a metal sleeve of an optical fiber connector, the optical fiber patch cord plugging tool further comprises a screwing outer sleeve of a thin-wall structure, and the screwing outer sleeve and the inner cylinder are each provided with an axial through groove allowing an optical connecting line to enter in the radial direction. The front end of the screwing outer sleeve is provided with a screwing end used for being matched with anti-skid vertical lines of a metal sleeve of the optical fiber connector, and the screwing outer sleeve and the inner cylinder are coaxially and rotationally assembled, can relatively move in the axial direction and are rotationally supported and matched. An operator only needs to push the screwing outer sleeve, so that the screwing outer sleeve can accurately sleeve the metal sleeve of the optical fiber connector in the sliding process due to coaxial assembly of the screwing outer sleeve and the inner cylinder, the situation that the screwing outer sleeve is deformed due to external pressure is avoided, the service life is long, the maintenance frequency and cost are reduced, and the optical fiber connector is practical and convenient to use. The popularization is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of plugging and unplugging optical fiber connectors for power transmission and transformation, and in particular to a plugging and unplugging tool for optical fiber jumpers. Background Art

[0002] Fiber optic patch cords are important components of optical communication systems. Specifically, they refer to optical cables with an optical fiber or optical cable installed with an optical fiber connector at one end and an optical fiber (optical cable) at the other end. In the prior art, the optical fiber connectors (optical fiber joints) installed in fiber optic patch cords are mainly divided into four types: LC, FC, SC, and ST. With the widespread application of optical transmission equipment, the usage of optical jumper racks and fiber optic jumpers in communication rooms has also increased. Fiber optic jumpers are added or returned according to usage needs, or during daily maintenance, it is often necessary to plug and unplug fiber optic jumpers for removal or replacement. However, the number of fiber optic jumpers in the fiber optic wiring cabinet is dense, and the fiber optic active connectors of each fiber optic jumper are densely arranged together. The spacing between each fiber optic active connector is narrow, and the operating space is extremely small. Even if the operator's fingers are thicker, they cannot reach between two adjacent fiber optic connectors. In particular, when inserting FC-type fiber optic jumpers, it is necessary to hold the fiber optic active connector with two fingers and rotate it to remove it. When inserting, it is necessary to align the bayonet and rotate it to insert it. It is difficult for the operator's fingers to reach between the two fiber optic active connectors, and it is even more difficult to hold the fiber optic connector and rotate it for plugging and unplugging operations.

[0003] Prior art, such as the utility model patent with authorization announcement number CN207817259U, discloses a quick plug-in and pull-out tool for ST or FC type optical fiber connectors in narrow spaces, specifically disclosing an outer cylinder and an inner cylinder sleeved inside the outer cylinder, the left end of the inner cylinder can extend from the left end opening of the outer cylinder, the right end of the inner cylinder extends from the right end opening of the outer cylinder, the right end of the inner cylinder is provided with an operation module for push-pull operation, a long groove matching the anti-slip vertical stripes on the metal sleeve of the ST or FC type optical fiber connector is provided on the inner wall of the left end opening of the outer cylinder, and a strip-shaped notch is provided on the front side of the outer cylinder and the inner cylinder for allowing the optical fiber line of the ST or FC type optical fiber connector to pass through. When using, it is only necessary to pass the optical fiber line through the strip-shaped notch, align the inner cylinder with the black rubber part of the optical fiber connector, so that the optical fiber can be aligned with the optical fiber interface when inserted and does not fall off, and the long groove of the outer cylinder clamps the metal sleeve of the optical fiber connector to ensure that the metal sleeve can rotate with the outer cylinder. When operating, use the palm of your hand to apply a little force to the inner tube, and then use your fingers to rotate the outer tube to quickly plug and unplug the optical fiber interface.

[0004] In the above-mentioned prior art, the outer cylinder is sleeved on the inner cylinder, and only a strip-shaped limiting hole is axially provided on the outer surface of the right side of the outer cylinder, and a limiting column is radially provided on the outer surface of the right side of the inner cylinder, and the limiting column is slidably arranged in the strip-shaped limiting hole to avoid relative rotation between the inner cylinder and the outer cylinder during operation. However, coaxial sliding between the inner cylinder and the outer cylinder cannot be guaranteed. After the inner cylinder has been aligned with the black rubber part of the optical fiber connector, when the operator pushes the outer cylinder, the outer cylinder is likely to slide forward at an angle, thereby failing to directly align with the metal sleeve of the optical fiber connector. It is likely that the operator will need to push the test multiple times before the outer cylinder can be aligned with the metal sleeve. In this process, it is very easy to cause the optical fiber connector to collide, which will also affect the connection status of the optical fiber jumper. It is also necessary to pinch the outer cylinder with fingers and rotate it to plug and unplug the fiber optic patch cord. Since the radial size of the fiber optic active connector is small, such as the FC type is generally 9.8mm, when the operator pinches the outer cylinder with a strip-shaped notch and rotates it, if the wall of the outer cylinder is thin, it is easy to cause the outer cylinder to deform and cannot be used again; if the wall of the outer cylinder is thick, when the number of fiber optic patch cords is dense, the gap between adjacent fiber optic patch cords cannot be inserted into the outer cylinder, and the fiber optic patch cord cannot be plugged and unplugged. Utility Model Content

[0005] The utility model aims to provide a fiber optic patch cord plugging and unplugging tool to solve the problem that the plugging and unplugging tools in the prior art cannot ensure that the tool is quickly aligned with the metal sleeve of the optical fiber connector when plugging and unplugging the optical fiber connector, which easily affects the connection state of the optical fiber patch cord; at the same time, the operator is required to manually pinch the outer cylinder of the plugging and unplugging tool and rotate it, which is easy to cause the outer cylinder to deform and cannot be used again when the wall of the outer cylinder is thin, and it is difficult to be used for plugging and unplugging dense optical fiber patch cords when the wall of the outer cylinder is thick. Overall, the plugging and unplugging tool has poor practicality.

[0006] To achieve the above-mentioned purpose, the technical solution of the fiber optic patch cord plugging and extraction tool provided by the utility model is: a fiber optic patch cord plugging and extraction tool, including an inner cylinder, the inner diameter of the front end of the inner cylinder matches the inner diameter of the metal sleeve of the optical fiber connector, and also includes a thin-walled screw-in outer sleeve, the screw-in outer sleeve and the inner cylinder are both provided with axial through grooves for radial entry of the optical connection line, the front end of the screw-in outer sleeve has a screwing end for matching with the anti-slip vertical lines of the metal sleeve of the optical fiber connector, the screw-in outer sleeve and the inner cylinder are coaxially rotated and assembled and can move relative to each other in the axial direction, and the two are rotationally supported and matched.

[0007] As a further improvement, the screwing sleeve includes a large diameter section and a small diameter section, the screwing end is arranged at the end of the small diameter section, and a rotation support structure is arranged between the large diameter section and the inner cylinder to realize coaxial rotation support between the screwing sleeve and the inner cylinder.

[0008] As a further improvement, the rotation support structures are arranged in groups in the axial direction.

[0009] As a further improvement, the rotation support structure comprises radially extending and circumferentially uniformly distributed support arms arranged on the inner cylinder and / or the screw sleeve.

[0010] As a further improvement, a rolling element is installed at the cantilevered end of the support arm.

[0011] As a further improvement, a tapered transition section is provided between the large diameter section and the small diameter section of the screw sleeve.

[0012] As a further improvement, it also includes a rotation drive mechanism, which is installed at the rear end of the inner tube and is transmission-connected to the screw outer sleeve to drive the screw outer sleeve to rotate forward and reversely.

[0013] As a further improvement, the rotation drive mechanism includes a power module and a drive motor.

[0014] As a further improvement, the driving motor has an eccentric output shaft, and the gear on the eccentric output shaft is meshed with the inner gear ring on the screw sleeve for transmission.

[0015] As a further improvement, the meshing portion between the gear and the screw sleeve is located between two adjacent groups of rotating support structures.

[0016] The beneficial effect is that the utility model is improved on the existing plug-in and pull-out tools. When performing the plug-in and pull-out operation, the inner cylinder is first sleeved on the black rubber part of the optical fiber connector. Since the twisting outer sleeve is coaxially assembled with the inner cylinder, the twisting outer sleeve can be accurately sleeved on the metal sleeve of the optical fiber connector during the sliding process by only pushing the twisting outer sleeve. The plug-in and pull-out tool can be quickly and accurately sleeved on the optical fiber connector, avoiding repeated operations that easily cause the plug-in and pull-out tool to constantly push the optical connection line or optical fiber connector and affect the connection state of the optical fiber jumper. In addition, when the operator pinches the twisting outer sleeve and applies force to it to rotate, the inner cylinder is supported relative to the twisting outer sleeve to rotate, so that the twisting outer sleeve is prevented from being deformed due to external pressure. At this time, a twisting outer sleeve with a thinner wall can be configured outside the inner cylinder to save operating space, which is convenient for the operator to insert his fingers for plug-in and pull-out operations. At the same time, the twisting outer sleeve will not be deformed due to the operation of the operator, and has a long service life, and the maintenance frequency and cost are reduced. It is more practical and conducive to promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A cross-sectional view of the optical fiber jumper plugging and unplugging tool provided by the utility model;

[0018] Figure 2 A cross-sectional view of the screwing jacket of the optical fiber jumper plugging and unplugging tool provided by the utility model;

[0019] Figure 3 A schematic diagram of the structure of the screwing jacket of the optical fiber jumper plugging and unplugging tool provided by the utility model;

[0020] Figure 4 for Figure 3 Schematic diagram of the A direction;

[0021] In the figure: 1. inner cylinder; 2. screw outer sleeve; 3. through groove; 4. support cylinder; 5. ball; 6. drive motor; 7. inner gear ring; 8. first connecting shaft; 9. first gear; 10. second gear; 11. second connecting shaft; 12. third gear; 13. support spring; 14. holding end. DETAILED DESCRIPTION

[0022] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0023] At present, there are a large number of fiber optic patch cords in fiber optic wiring cabinets, and the fiber optic active connectors (fiber optic joints) of each fiber optic patch cord are densely arranged together. The operating space between the optical joints is very small, and even the operator's fingers cannot be inserted to hold the fiber optic patch cord connector for plugging and unplugging operations. Therefore, plugging and unplugging tools are required when plugging and unplugging fiber optic joints are required for daily maintenance. Although the prior art cited in the background technology can perform plugging and unplugging operations without the operator's fingers inserting between the fiber optic joints, in actual use, when the inner cylinder of the plugging and unplugging tool is aligned with the black rubber part of the fiber optic joint, and the outer cylinder is pushed to be stuck on the metal sleeve of the fiber optic joint, it cannot be guaranteed that the outer cylinder will slide along the axis of the inner cylinder. The outer cylinder is likely to slide forward at an angle and cannot be aligned with the metal sleeve of the fiber optic joint. The operator is required to push the outer cylinder towards the metal sleeve for multiple times, and the metal sleeve is inevitably impacted during this process, which is very likely to damage the metal sleeve and affect the connection state of the fiber optic patch cord. At the same time, since the inner and outer cylinders of the plug-in and pull-out tool are not complete cylindrical structures, but are provided with strip-shaped notches on the cylinders for the optical fiber lines of the pipeline connectors to pass through, and the size of the plug-in and pull-out tool itself is very small, the outer cylinder may be deformed when the operator pinches the outer cylinder and rotates it, and it will be impossible to get stuck on the metal sleeve of the optical fiber connector again for plug-in and pull-out operations. If the wall thickness of the outer cylinder is simply increased, although the deformation of the outer cylinder can be avoided to a certain extent, the gaps between adjacent optical fiber connectors may not be able to allow the outer cylinder to extend into, and naturally the operator cannot pinch the outer cylinder with his fingers to rotate it. Therefore, the problem of difficulty in plugging and unplugging dense optical fiber jumpers has not been truly solved.

[0024] Based on this, the utility model improves the plugging and unplugging tools in the prior art and can effectively solve the problems existing in the prior art. At the same time, the utility model is particularly suitable for types such as FC and ST, which require two fingers to hold the optical fiber connector tightly and rotate it counterclockwise to remove it when unplugging, and two fingers to hold the optical fiber connector tightly, align it with the bayonet and rotate it clockwise to insert it.

[0025] The overall design concept of the optical fiber jumper plugging and unplugging tool provided by the utility model is:

[0026] A fiber optic patch cord plugging and unplugging tool, such as Figure 1-3 As shown, it includes an inner cylinder 1 and a screw-on outer sleeve 2. The screw-on outer sleeve 2 is a thin-walled structure. The inner diameter of the front end of the inner cylinder 1 matches the inner diameter of the metal sleeve of the optical fiber connector. The front end of the screw-on outer sleeve 2 has a screw-on end for matching with the anti-slip vertical lines of the metal sleeve of the optical fiber connector. The screw-on outer sleeve 2 and the inner cylinder 1 are both provided with an axial through groove 3 for radial entry of the optical connecting line. The screw-on outer sleeve 2 and the inner cylinder 1 are coaxially rotated and assembled and can move relative to each other in the axial direction at the same time, and the screw-on outer sleeve 2 and the inner cylinder 1 are rotationally supported and matched.

[0027] When in use, the operator first brings the fiber optic patch cord plugging and unplugging tool close to the fiber optic patch cord, and at the same time extends the optical connecting line into the inner cavity of the inner cylinder 1 through the screwing sleeve 2 and the through groove 3 on the inner cylinder 1, and then moves the tool as a whole toward the fiber optic connector. Since the inner diameter of the front end of the inner cylinder 1 matches the inner diameter of the metal sleeve of the fiber optic connector, the inner cylinder 1 can be sleeved on the outside of the black rubber part of the fiber optic connector, and then the screwing sleeve 2 is pushed to the metal sleeve part sleeved on the fiber optic connector. At this time, the screwing end of the screwing sleeve 2 matches the anti-slip vertical lines on the metal sleeve, and the fiber optic connector can be driven to rotate at the same time through the metal sleeve when the operator pinches the screwing sleeve 2 to rotate it. The operator can pinch the screwing sleeve 2 and rotate it clockwise or counterclockwise as needed, so that the fiber optic connector also rotates clockwise or counterclockwise to complete the plugging and unplugging of the fiber optic patch cord.

[0028] When the optical fiber patch cord plugging and unplugging tool provided by the utility model is performing plugging and unplugging operations, after the inner cylinder 1 is sleeved on the black rubber part of the optical fiber connector, it only needs to push the screwing outer sleeve 2, and the screwing outer sleeve 2 can be accurately sleeved on the metal sleeve of the optical fiber connector during the sliding process because the screwing outer sleeve 2 and the inner cylinder 1 are coaxially assembled. The plugging and unplugging tool can be quickly and accurately sleeved on the optical fiber connector. More importantly, when the operator pinches the screwing outer sleeve 2 and applies force to it to rotate it, the inner cylinder 1 is supported relative to the screwing outer sleeve 2 for rotation, so that the screwing outer sleeve 2 is prevented from being deformed due to external pressure. At this time, a screwing outer sleeve with a thinner wall can be configured outside the inner cylinder 1. On the basis of saving operating space and facilitating the operator's fingers to insert for plugging and unplugging operations, the screwing outer sleeve 2 will not be deformed due to the operator's operation, and has a long service life, and reduces the maintenance frequency and cost. It is more practical and conducive to promotion.

[0029] Based on the overall introduction of the present invention above, a more specific embodiment is provided below on the basis of the overall introduction:

[0030] This embodiment focuses on the detailed description of the rotation support structure.

[0031] A rotating support structure is arranged between the screwing outer sleeve and the inner cylinder to realize the coaxial rotation between the screwing outer sleeve and the inner cylinder. The rotating support structure can be arranged on the screwing outer sleeve, and naturally can also be arranged on the inner cylinder. In this embodiment, the rotating support structure is fixed on the inner cylinder to support the outer cylinder, which is convenient for processing, and the rotating support structure fixed on the inner cylinder has a larger supporting surface for the screwing outer sleeve, and the supporting effect is better. In other embodiments, the screwing outer sleeve with a thin-walled structure can also be directly sleeved on the inner cylinder, and the outer diameter of the inner cylinder is close to the inner diameter of the screwing outer sleeve. The screwing outer sleeve can move along the axial direction of the inner cylinder and can also rotate relative to the inner cylinder.

[0032] The rotation support structure includes radially extending support arms uniformly distributed in the circumferential direction arranged on the inner cylinder, and on the basis of realizing the rotation support cooperation between the screwing outer sleeve and the inner cylinder, the screwing outer sleeve is ensured to slide more smoothly relative to the inner cylinder, thereby improving the plugging and unplugging work efficiency. The rotation support structure can be a support rod with one end fixed on the inner cylinder, and the other end is attached to the inner wall of the screwing outer sleeve to support the screwing outer sleeve, so that the screwing outer sleeve can slide and rotate uniformly in the axial direction relative to the inner cylinder. Specifically, in order to ensure a better support effect for the screwing outer sleeve, two support rods are arranged at the same position in the axial direction of the inner cylinder, or multiple support rods are uniformly arranged along the circumference of the inner cylinder to avoid the through groove. Further, in order to improve the stability of the screwing outer sleeve during sliding, two support rods are arranged along the axial direction of the inner cylinder. In this embodiment, based on the size of the optical fiber jumper plugging and unplugging tool, a group of rotation support structures are arranged along the axial extension direction of the inner cylinder. The rotation support structure can be arranged in two groups, or when the axial size of the plugging and unplugging tool is long, in order to ensure the reliable rotation support cooperation between the screwing outer sleeve and the inner cylinder, the rotation support structure can also be arranged in four groups in the axial direction. The rotation support structure may also include a bearing mounted on the inner cylinder, a bearing seat mounted on the outer side of the inner cylinder, the bearing mounted in the bearing seat, and the screw sleeve mounted on the bearing so that the screw sleeve can rotate.

[0033] Preferably, a rolling element is installed at the cantilevered end of the support arm to reduce the friction between the screw outer sleeve 2 and the inner cylinder 1, such as Figure 1 As shown, specifically, a support tube 4 is fixed on the inner tube 1, a ball 5 is arranged at the end of the support tube 4, and in order to further ensure the flexible use of the plugging and unplugging tool, a support spring 13 is also arranged in the support tube 4. In other embodiments, the rolling element can also be a universal wheel.

[0034] Based on the overall introduction of the present invention above, a more specific embodiment is provided below on the basis of the overall introduction:

[0035] This embodiment focuses on the detailed description of the screwing sleeve.

[0036] The screwing sleeve comprises a large diameter section and a small diameter section, the screwing end is arranged at the end of the small diameter section, and a rotation support structure is arranged in a relatively large space between the large diameter section of the screwing sleeve and the inner cylinder.

[0037] In order to improve the structural strength of the plugging and unplugging tool, it is possible to achieve a long-term stable operation process suitable for pinching and twisting the outer sleeve to rotate for plugging and unplugging, such as Figure 1-Figure 3 As shown, there is a tapered transition section between the large diameter section and the small diameter section of the twisting jacket 2. The relatively gentle transition on the twisting jacket 2 improves the structural strength of the twisting jacket 2 and facilitates the insertion of the plugging and unplugging tool between two closely spaced optical fiber connectors. Of course, in other embodiments, the large diameter section and the small diameter section on the twisting jacket may also be a right-angle transition section.

[0038] In this embodiment, the small diameter section of the screwing jacket is the screwing end that matches the anti-skid vertical lines of the metal sleeve of the optical fiber connector. When in use, the operator first sets the small diameter end on the metal sleeve so as to drive the optical fiber connector to rotate during the rotation of the screwing jacket. In addition, an anti-skid protrusion or an anti-skid pad is set on the inner wall of the screwing end to increase the friction between the screwing end and the metal sleeve, so that the screwing jacket can better drive the optical fiber connector to rotate and improve the working efficiency of the optical fiber jumper plugging and unplugging. The anti-skid protrusion can specifically be a vertical anti-skid protrusion that matches the anti-skid vertical lines of the metal sleeve of the optical fiber connector, so that when the screwing end is set outside the metal head, the screwing jacket can more reliably drive the metal sleeve to rotate during the rotation process to facilitate the plugging and unplugging of the optical fiber jumper. Alternatively, a rubber anti-skid pad can also be set inside the screwing end, which can increase the friction between the clamping part and the metal head while protecting the metal head from wear.

[0039] Based on the overall introduction of the present invention above, or on the basis of the embodiments of the present invention introduced above, a more specific embodiment is provided below on the basis of the overall introduction:

[0040] This embodiment focuses on the detailed description of the rotation drive mechanism.

[0041] In order to reduce the labor intensity of operators and improve work efficiency, a rotary drive mechanism is installed at the rear end of the inner cylinder, and the rotary drive mechanism is connected to the screw outer sleeve to realize the forward and reverse rotation of the screw outer sleeve. The rotary drive mechanism includes a power module and a drive motor. The drive motor has an eccentric output shaft, and the rotation of the screw outer sleeve relative to the inner cylinder is realized through gear transmission.

[0042] Specifically, Figure 1As shown, in order to facilitate the setting of the driving motor 6, a cylinder body having the same radial size as the screwing outer sleeve 2 is fixed at the rear end of the inner cylinder 1 as a gripping end 14 for the operator to operate, the driving motor 6 and the power module are arranged in the gripping end 14, and the switch is arranged outside the gripping end 14. In order to improve the installation and manufacturing efficiency, the gripping end 14 includes two pipes with semicircular cross-sections, which are connected to form a complete cylinder body to constitute the gripping end 14 for the operator to hold.

[0043] like Figure 1 , Figure 3 and Figure 4 As shown, the output end of the driving motor 6 is connected to a first connecting shaft 8, and the other end of the first connecting shaft 8 serving as an output shaft is connected to a first gear 9. The first gear 9 is also meshedly connected to a second gear 10. The second gear 10 is connected to a third gear 12 via a second connecting shaft 11, and the third gear 12 is meshedly connected to an inner gear ring 7 on the inner wall of the screw sleeve.

[0044] The operator turns on the switch, and the driving motor 6 starts to drive the first gear 9 to rotate through the first connecting shaft 8, and the second gear 10 rotates accordingly, and drives the third gear 12 to rotate through the second connecting shaft 11. As a result, the third gear 12 cooperates with the inner gear ring 7 on the screw sleeve to make the screw sleeve rotate to facilitate the insertion and removal of the optical fiber connector.

[0045] The setting of the rotary drive mechanism enables the operator to put the inner tube and the twisting outer sleeve on the black rubber part and the metal sleeve of the optical fiber connector respectively, without the operator having to apply manual force. The operator only needs to turn on the switch to rotate the twisting outer sleeve clockwise or counterclockwise, and complete the plugging and unplugging of the optical fiber connector through electric drive, reducing the labor intensity of manual operation, especially in the case of frequent unplugging of optical fiber connectors, which can reduce the fatigue of operators. It can also provide more precise control and force to drive the twisting outer sleeve to rotate, ensuring stability and accuracy during the plugging and unplugging process, avoiding repeated operations caused by inaccurate force or damage risks caused by improper operation.

[0046] In other embodiments, the transmission structure can be directly connected to the output shaft of the driving motor to drive the screwing outer sleeve to rotate, and the output shaft of the driving motor is arranged to face away from the screwing end. When the driving motor is working, the screwing outer sleeve is directly driven to rotate clockwise or counterclockwise. Although the requirements for the driving motor are higher, the structure is simpler.

[0047] It should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0048] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fiber jumper plugging and unplugging tool, comprising an inner cylinder, the inner diameter of the front end of the inner cylinder matches the inner diameter of the metal sleeve of the optical fiber connector, wherein: It also includes a screw-in outer sleeve with a thin-wall structure. Both the screw-in outer sleeve and the inner cylinder are provided with axial through grooves for radial entry of the optical connecting line. The front end of the screw-in outer sleeve has a screw-in end for matching with the anti-slip vertical lines of the metal sleeve of the optical fiber connector. The screw-in outer sleeve and the inner cylinder are coaxially rotated and assembled and can move relative to each other in the axial direction, and the two are rotationally supported and matched.

2. The optical fiber jumper plugging and extraction tool according to claim 1, characterized in that: The screwing outer sleeve comprises a large diameter section and a small diameter section, the screwing end is arranged at the end of the small diameter section, and a rotation support structure is arranged between the large diameter section and the inner cylinder to realize coaxial rotation support between the screwing outer sleeve and the inner cylinder.

3. The optical fiber jumper plugging and extraction tool according to claim 2, characterized in that: The rotation support structures are arranged in groups in the axial direction.

4. The optical fiber jumper plugging and extraction tool according to claim 2 or 3, characterized in that: The rotation support structure comprises radially extending and circumferentially uniformly distributed support arms arranged on the inner cylinder and / or the screw outer sleeve.

5. The optical fiber jumper plugging and extraction tool according to claim 4, characterized in that: A rolling element is installed at the cantilevered end of the support arm.

6. The optical fiber jumper plugging and extraction tool according to claim 2 or 3, characterized in that: A tapered transition section is provided between the large diameter section and the small diameter section of the screw sleeve.

7. The optical fiber jumper plugging and extraction tool according to claim 3, characterized in that: It also includes a rotation drive mechanism, which is installed at the rear end of the inner cylinder and is transmission-connected with the screw outer sleeve to drive the screw outer sleeve to rotate forward and reversely.

8. The optical fiber jumper plugging and extraction tool according to claim 7, characterized in that: The rotary drive mechanism includes a power module and a drive motor.

9. The optical fiber jumper plugging and extraction tool according to claim 8, characterized in that: The driving motor has an eccentric output shaft, and the gear on the eccentric output shaft is meshed with the inner gear ring on the screw sleeve for transmission.

10. The optical fiber jumper plugging and extraction tool according to claim 9, characterized in that: The meshing position of the gear and the screw sleeve is located between two adjacent groups of rotating support structures.

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