Pigtail storage box

By designing the structure of the lower and upper rotating disks, the fiber optic cable can be rotated and stored, solving the problem that bending the fiber optic cable affects the transmission of optical signals and improving the portability and ease of operation of the device.

CN224429847UActive Publication Date: 2026-06-30CHINA UNITED NETWORK COMM GRP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA UNITED NETWORK COMM GRP CO LTD
Filing Date
2025-07-21
Publication Date
2026-06-30

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Abstract

This utility model discloses a pigtail storage box that reduces the bending degree of the pigtail without increasing the overall size of the storage box, thereby reducing the impact of pigtail bending on the transmission quality of optical signals in the pigtail. The pigtail storage box includes a lower rotating disk and an upper rotating disk. A winding body is provided on the inner bottom surface of the rotating disk, and a wire-passing groove is formed in the middle of the winding body. Two first-coil clips are also provided on the inner edge of the lower rotating disk. The two first-coil clips are arranged opposite each other and located outside the winding body. The pigtail passing through the wire-passing groove also passes through the two first-coil clips, so that the pigtail bends at the inner edge of the lower rotating disk after passing through the wire-passing groove, thereby reducing the bending degree of the portion of the pigtail between the wire-passing groove and either of the first-coil clips. The upper rotating disk is fastened onto the lower rotating disk and rotatably connected to it. Two wire-passing holes are provided on the side wall of the upper rotating disk.
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Description

Technical Field

[0001] This utility model belongs to the field of pigtail storage technology, specifically relating to a pigtail storage box. Background Technology

[0002] The structure of common pigtail storage devices is as follows: Figure 1 As shown, the principle is that the pigtail 4 passes through the middle of the rotating winch, and then the winch is rotated to achieve storage.

[0003] from Figure 1 It can be seen that the radii of curvature at points a and b, where the pigtail 4 just emerges from the rotating winch, are much smaller than the radius of curvature at point c around the winch, indicating a greater degree of bending. However, in optical signal transmission using the pigtail 4, to ensure transmission quality, the degree of bending is required to be minimal. Therefore, existing pigtail storage devices can negatively impact the transmission quality of the optical signal within the pigtail 4.

[0004] Currently, other fiber optic cable storage devices based on the same storage principle generally solve this problem by increasing the overall size of the storage device. Increasing the overall size of the device increases the radius of curvature at points a and b, reducing the degree of bending; however, this increase in size significantly reduces the portability of the fiber optic cable storage device.

[0005] Therefore, how to reduce the degree of bending of the pigtail without changing the overall size of the pigtail storage device is a problem that needs to be solved. Utility Model Content

[0006] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the existing technology by providing a pigtail storage box that can reduce the degree of bending of the pigtail without increasing the overall size of the pigtail storage box, thereby reducing the impact of pigtail bending on the transmission quality of optical signals in the pigtail.

[0007] In a first aspect, this utility model provides a pigtail storage box, which includes a lower rotating disk and an upper rotating disk. A winding body is provided on the bottom surface of the inner side of the rotating disk, and a wire-passing groove is formed in the middle of the winding body. Two first-turn wire clips are also provided on the inner edge of the lower rotating disk, with the two first-turn wire clips positioned opposite each other and located outside the winding body. The pigtail passing through the wire-passing groove also passes through the two first-turn wire clips, causing the pigtail to bend towards the inner edge of the lower rotating disk after passing through the wire-passing groove, thereby reducing the degree of bending of the portion of the pigtail between the wire-passing groove and either of the first-turn wire clips. The upper rotating disk is fastened to the lower rotating disk and rotatably connected to it. Two wire-passing holes are provided on the side wall of the upper rotating disk. After the middle part of the pigtail passes through the wire guide groove and is inserted into the two first loop wire clips, when the lower rotating disk rotates relative to the upper rotating disk, the winding body drives the part of the pigtail located between the two first loop wire clips to rotate relative to the upper rotating disk, thereby driving the two pigtail sections located outside the upper rotating disk to pass through the two wire guide holes and then be wound on the winding body.

[0008] In some embodiments, the winding body includes two winding posts, which are vertically arranged; there is a gap between the two winding posts, which forms the wire passage groove.

[0009] In some embodiments, the bottom wall of the lower rotating disk has a plurality of first hollow holes, which allow the operator's fingers to be inserted and rotate the lower rotating disk relative to the upper rotating disk; and / or, the top wall of the upper rotating disk has a plurality of second hollow holes, which allow the operator's fingers to be inserted and rotate the upper rotating disk relative to the lower rotating disk.

[0010] In some embodiments, a receiving groove is provided at the bottom of the winding post, and a permanent magnet is disposed in the receiving groove.

[0011] In some embodiments, the permanent magnet is fixed within the receiving groove by screws.

[0012] In some embodiments, the upper edge of the lower rotating disk engages with the lower edge of the upper rotating disk.

[0013] In some embodiments, grease is provided between the lower rotating disk and the upper rotating disk.

[0014] In some embodiments, the outer surface of the sidewall of the upper rotating disk is provided with a first anti-slip texture; and / or, the outer surface of the sidewall of the lower rotating disk is provided with a second anti-slip texture.

[0015] In some embodiments, the opening of each of the threading holes faces the tangential direction of the upper rotating disk.

[0016] In some embodiments, two threading holes are symmetrically arranged on both sides of the center of the upper rotating disk, and the opening directions of the two threading holes are opposite.

[0017] Therefore, the pigtail storage box provided in this embodiment of the utility model, by setting a lower rotating disk and a winding body on the bottom surface inside the lower rotating disk, forms a wire-passing groove in the middle of the winding body, which allows the winding body to drive the pigtail passing through the wire-passing groove to rotate. By setting two first-coil clips on the inner edge of the lower rotating disk, and setting the two first-coil clips opposite each other and located outside the winding body, the position of the pigtail passing through the first-coil clips can be fixed by the first-coil clips, so that the pigtail passing through the wire-passing groove bends at the inner edge of the lower rotating disk after passing through the first-coil clip, thereby reducing the degree of bending of the pigtail between the wire-passing groove and either first-coil clip. Compared with the prior art, the impact of pigtail bending on the transmission quality of optical signals in the pigtail can be reduced without increasing the overall size of the pigtail storage box. By setting up an upper rotating disk and attaching it to a lower rotating disk for rotatable connection, two threading holes are provided on the side wall of the upper rotating disk. After the middle part of the pigtail passes through the thread groove and is secured with the two first-coil clips, when the lower rotating disk rotates relative to the upper rotating disk, the winding body causes the portion of the pigtail located between the two first-coil clips to rotate relative to the upper rotating disk. This, in turn, causes the two pigtail segments located outside the upper rotating disk to pass through the two threading holes and wind onto the winding body. Therefore, through this setup, the pigtail storage box can rotate and store the pigtail, reducing the impact of pigtail bending on the transmission quality of the optical signal without increasing the overall size of the pigtail storage box. Attached Figure Description

[0018] Figure 1 : A schematic diagram of a pigtail storage box provided in the prior art;

[0019] Figures 2-3 : A schematic diagram of a pigtail storage box provided in an embodiment of this utility model;

[0020] Figure 4 : A cross-sectional view of a pigtail storage box provided in an embodiment of this utility model;

[0021] Figures 5-6 : A schematic diagram of a lower rotating disk provided in an embodiment of this utility model;

[0022] Figure 7 : A cross-sectional view of a lower rotating disk provided in an embodiment of this utility model;

[0023] Figure 8 This is a schematic diagram showing a pigtail clip inserted into the first loop cable clip according to an embodiment of the present invention.

[0024] Figures 9-11 : A schematic diagram of an upper rotating disk provided in an embodiment of this utility model;

[0025] Figures 12-14 : A schematic diagram of a fiber optic cable storage box for storing fiber optic cables according to an embodiment of this utility model;

[0026] Figure 15 : A schematic diagram of a rotating lower disk provided in an embodiment of this utility model;

[0027] Figure 16 : A schematic diagram of an unfolded pigtail provided in an embodiment of this utility model.

[0028] Among them, 1-lower rotating disk; 2-winding body; 3-first loop wire clip; 4-tail fiber; 5-upper rotating disk; 6-threading hole; 7-winding post; 8-first hollow hole; 9-second hollow hole; 10-permanent magnet. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Example 1:

[0031] like Figure 2 and Figure 3 As shown in the figure, this utility model embodiment provides a pigtail storage box for storing pigtail 4.

[0032] like Figure 4 As shown, the pigtail storage box includes a lower rotating disk 1 and an upper rotating disk 5. Figure 5 , Figure 6 and Figure 7 As shown, a winding body 2 is provided on the bottom surface of the inner side of the lower rotating disk 1, and a wire-passing groove is formed in the middle of the winding body 2. Two first-turn wire clips 3 are also provided on the inner edge of the lower rotating disk 1. The two first-turn wire clips 3 are arranged opposite each other and located on the outer side of the winding body 2. The pigtail 4 passing through the wire-passing groove also passes through the two first-turn wire clips 3, so that the pigtail 4 bends at the inner edge of the lower rotating disk 1 after passing through the wire-passing groove, so as to reduce the degree of bending of the part of the pigtail 4 between the wire-passing groove and any of the first-turn wire clips 3.

[0033] For example, the winding body 2 is located at the center of the bottom surface inside the lower rotating disk 1. The outer ring of the winding body 2 is approximately circular, and the wire passage groove can be a vertical groove in the middle of the winding body 2 with a width of 3mm. The winding body 2 and the lower rotating disk 1 can be an integral structure, and both the winding body 2 and the lower rotating disk 1 can be made of engineering plastic.

[0034] like Figure 7 and Figure 8 As shown, the two first loop clips 3 are positioned opposite each other on both sides of the winding body 2, and are located on opposite sides of the wire passage groove. After the pigtail 4 passes through the first loop clips 3, the first loop clips 3 can fix the position of the pigtail 4.

[0035] For example, the size of the first loop of cable clip 3 needs to be set according to the size of the pigtail 4. For instance, when the pigtail storage box is used to coil a 3mm diameter pigtail 4, the inner length and width of the first loop of cable clip 3 can both be 3mm, and the opening width is 2.3mm; when the pigtail storage box is used to coil a 2mm diameter pigtail 4, the inner length and width of the first loop of cable clip 3 can both be 2mm, and the opening width is 1.3mm.

[0036] like Figure 8 As shown, after passing through the wire slot and the first loop wire clip 3, the pigtail 4 bends away from the outer surface of the winding body 2, that is, it bends at the edge inside the downward rotating disk 1, compared to Figure 1 In existing technologies, the bending method of pigtails, when the external dimensions of the pigtail storage box are the same, Figure 8 The bending degree of the pigtail 4 at points a and b is smaller, which increases the radius of curvature of the pigtail 4 at points a and b. Therefore, the bending of the pigtail 4 can reduce the impact on the transmission quality of the optical signal in the pigtail 4.

[0037] like Figure 4 , Figure 9 , Figure 10 and Figure 11 As shown, the upper rotating disk 5 is fastened onto the lower rotating disk 1 and rotatably connected to it. Two threading holes 6 are provided on the side wall of the upper rotating disk 5. (Combined) Figure 12 , Figure 13 and Figure 14 After the middle part of the pigtail 4 passes through the wire groove and is inserted into the two first loop wire clips 3, when the operator rotates the lower rotating disk 1 relative to the upper rotating disk 5, the winding body 2 drives the part of the pigtail 4 located between the two first loop wire clips 3 to rotate relative to the upper rotating disk 5, thereby driving the two pigtail 4 located outside the upper rotating disk 5 to pass through the two wire holes 6 and then be wound on the winding body 2.

[0038] For example, the lower end of the upper rotating disk 5 is rotatably connected to the upper end face of the lower rotating disk 1. The upper rotating disk 5 can be made of engineering plastic.

[0039] For example, the inner diameter of the threading hole 6 can be 7.5mm, and the inner diameter of the storage space for the pigtail formed by the upper rotating disk 5 and the lower rotating disk 1 is 90mm, with a height of 18mm.

[0040] Combining 12, Figure 13 and Figure 14After the middle part of the pigtail 4 passes through the wire groove and is inserted into the two first loop wire clips 3, the two sections of pigtail 4 located outside the upper rotating disk 5 are the two parts of the pigtail 4 that are not yet wound on the winding body 2. When the lower rotating disk 1 rotates relative to the upper rotating disk 5, because of the fixing effect of the first loop wire clips 3 on the pigtail 4, the winding body 2 can still maintain a small degree of bending in the part of the pigtail 4 between the wire groove and either first loop wire clip 3 when it drives the pigtail 4 to rotate, so as to avoid the attenuation of the light signal transmitted in the pigtail 4 due to excessive bending of the pigtail 4.

[0041] Therefore, the fiber optic cable storage box provided in this embodiment of the present invention, by setting a lower rotating disk 1 and a winding body 2 on the bottom surface inside the lower rotating disk 1, and forming a wire groove in the middle of the winding body 2, allows the winding body 2 to drive the fiber optic cable 4 passing through the wire groove to rotate. By setting two first loop wire clips 3 on the inner edge of the lower rotating disk 1, and setting the two first loop wire clips 3 opposite to each other and located on the outer side of the winding body 2, the position of the fiber optic cable 4 passing through the first loop wire clips 3 can be fixed by the first loop wire clips 3, so that the fiber optic cable 4 passing through the wire groove bends at the inner edge of the lower rotating disk 1 after passing through the first loop wire clip 3, thereby reducing the degree of bending of the fiber optic cable 4 between the wire groove and either first loop wire clip 3. Compared with the prior art, the impact of the bending of the fiber optic cable 4 on the transmission quality of the optical signal in the fiber optic cable 4 can be reduced without increasing the overall size of the fiber optic cable storage box. By setting up an upper rotating disk 5 and rotatably connecting it to the lower rotating disk 1, and by creating two threading holes 6 on the side wall of the upper rotating disk 5, after the middle part of the pigtail 4 passes through the thread groove and is secured to the two first-coil clips 3, when the lower rotating disk 1 rotates relative to the upper rotating disk 5, the winding body 2 can cause the portion of the pigtail 4 located between the two first-coil clips 3 to rotate relative to the upper rotating disk 5. This causes the two sections of pigtail 4 located outside the upper rotating disk 5 to pass through the two threading holes 6 and be wound onto the winding body 2. Therefore, through the above arrangement, the pigtail storage box can rotate and store the pigtail 4, and without increasing the overall size of the pigtail storage box, the impact of bending of the pigtail 4 on the transmission quality of the optical signal in the pigtail 4 can be reduced.

[0042] Furthermore, the fiber optic cable storage box in this embodiment has a simple structure, resulting in lower cost and easier maintenance.

[0043] In some embodiments, such as Figure 4 and Figure 5 As shown, the winding body 2 includes two winding posts 7, which are vertically arranged. There is a gap between the two winding posts 7, which forms a wire passage groove.

[0044] Two winding posts 7 are symmetrically arranged on both sides of the center of the lower rotating disk 1. The outer ring of each winding post 7 has a smooth arc surface.

[0045] For example, the height of the winding post is 27mm, and the cross-sectional shape of the winding post is a rounded rectangle. In the rounded rectangle, the radius of the two arcs is 15mm, and the distance between the centers of the two arcs is 15mm.

[0046] The gap between the two winding posts 7 is equal to the outer diameter of the pigtail 4, so as to clamp and fix the pigtail 4 passing through the gap (wire passage groove) through the gap (wire passage groove).

[0047] In some embodiments, such as Figure 5 As shown, the bottom wall of the lower rotating disk 1 has multiple first hollow holes 8, combined with Figure 14 The first perforated hole 8 allows the operator's fingers to be inserted, which in turn causes the lower rotating disk 1 to rotate relative to the upper rotating disk 5.

[0048] Combination Figure 15 After the operator inserts their finger into the first hollow hole 8 at the bottom of the lower rotating disk 1, the finger, the bottom of the lower rotating disk 1, and the axis of the lower rotating disk 1 can form a "Z"-shaped crank. Rotating the finger around the axis of the lower rotating disk 1 can provide a continuous and stable rotational force to the lower rotating disk 1, causing the two winding posts 7 to rotate around the axis of the lower rotating disk 1, and then continuously driving the pigtail 4 to rotate until the pigtail 4 is completely retracted into the pigtail storage box.

[0049] The first perforated hole 8 can reduce the weight of the lower rotating disk 1, reduce the production cost of the lower rotating disk 1, and make it easier for the operator to rotate the lower rotating disk 1 to store the pigtail 4.

[0050] In some embodiments, such as Figure 9 and Figure 10 As shown, the top wall of the upper rotating disk 5 has multiple second hollow holes 9, which allow the operator's fingers to be inserted to drive the upper rotating disk 5 to rotate relative to the lower rotating disk 1.

[0051] The principle by which the operator inserts his finger into the second hollow hole 9 and drives the upper rotating disk 5 to rotate is the same as the principle by which the operator inserts his finger into the first hollow hole 8 and drives the lower rotating disk 1 to rotate.

[0052] The second perforated hole 9 can reduce the weight of the upper rotating disk 5, reduce the production cost of the upper rotating disk 5, and make it easier for the operator to rotate the upper rotating disk 5 to collect the pigtail 4.

[0053] For example, the first cutout hole 8 and the second cutout hole 9 can both be regular hexagons with an inscribed circle radius of 5.5 mm.

[0054] In some embodiments, such as Figure 7 As shown, a receiving groove is provided at the bottom of the winding post 7, and a permanent magnet 10 is provided in the receiving groove.

[0055] For example, the permanent magnet 10 is a neodymium iron boron magnet. The permanent magnet 10 is cylindrical in shape, with a diameter of 12 mm and a height of 5 mm. The shape and size of the receiving groove are the same as those of the permanent magnet 10.

[0056] In existing technologies, fiber optic cable storage boxes are placed haphazardly in the server room, affecting aesthetics and taking up floor space. By installing permanent magnets 10, the fiber optic cable storage boxes can be attracted to any magnetic material, such as the side panel of the server rack, making them easier to organize.

[0057] In some embodiments, such as Figure 7 As shown, the permanent magnet 10 is fixed in the receiving groove by screws.

[0058] For example, the winding post 7 is provided with an M4 threaded hole to facilitate the insertion of a screw.

[0059] like Figure 7 As shown, the screw passes through the permanent magnet 10 and is fixed inside the winding post 7 to fix the permanent magnet 10 in the receiving groove, thereby improving the firmness of the permanent magnet 10 in the receiving groove.

[0060] In some embodiments, such as Figure 4 As shown, the upper edge of the lower rotating disk 1 is engaged with the lower edge of the upper rotating disk 5.

[0061] like Figure 4 As shown, the upper edge of the lower rotating disk 1 is inclined inward to form a first annular groove, and the lower edge of the upper rotating disk 5 is turned outward to form a second annular groove. When the upper rotating disk 5 is installed on the lower rotating disk 1, the bottom end of the upper rotating disk 5 is inserted into the first annular groove of the lower rotating disk 1, and at the same time, the upper edge of the lower rotating disk 1 is inserted into the second annular groove of the upper rotating disk 5, thus completing the installation of the lower rotating disk 1 and the upper rotating disk 5, and enabling the lower rotating disk 1 and the upper rotating disk 5 to rotate relative to each other.

[0062] With the above settings, the lower rotating disk 1 and the upper rotating disk 5 can be installed quickly.

[0063] In some embodiments, grease is provided between the lower rotating disk 1 and the upper rotating disk 5.

[0064] For example, the lubricant can be petroleum jelly, etc.

[0065] The above settings can reduce the resistance when the lower rotating disk 1 and the upper rotating disk 5 rotate relative to each other.

[0066] In some embodiments, such as Figure 10 As shown, the outer surface of the side wall of the upper rotating disk 5 is provided with a first anti-slip texture.

[0067] For example, such as Figure 10As shown, the first anti-slip texture can be formed by a V-shaped groove on the outer surface of the side wall of the upper rotating disk 5.

[0068] The above settings can improve the operator's grip on the upper rotating disk 5.

[0069] In some embodiments, such as Figure 6 As shown, the outer surface of the side wall of the lower rotating disk 1 is provided with a second anti-slip texture.

[0070] For example, such as Figure 6 As shown, the second anti-slip texture can be formed by a V-shaped groove on the outer surface of the side wall of the lower rotating disk 1.

[0071] The above settings can improve the operator's grip on the lower rotating disk 1.

[0072] In some embodiments, such as Figure 10 and Figure 11 Each thread hole 6 has its opening facing the tangent direction of the upper rotating disk 5.

[0073] Understandably, the above settings can reduce the degree of bending of the pigtail 4 at the opening of each thread hole 6, thereby reducing the resistance when the pigtail storage box stores the pigtail 4.

[0074] In some embodiments, combined with Figure 16 Two threading holes 6 are symmetrically arranged on both sides of the center of the upper rotating disk 5, and the opening directions of the two threading holes 6 are opposite.

[0075] With the above settings, when the pigtail 4 needs to be unfolded, place or attach the pigtail storage device on a flat surface, stretch both ends of the pigtail 4 with both hands, and under the tension of the pigtail 4, the upper rotating disk 5 will remain stationary. The pigtail 4 will apply a centrifugal force to the outer tangent circle of the winding body 2 (two winding posts 7), thereby driving the lower rotating disk 1 to rotate. In this way, the pigtail 4 will be released to the required length under the action of the tension, making the entire pigtail release process of the storage device smoother.

[0076] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A fiber optic cable storage box, characterized in that, include: A lower rotating disk (1) has a winding body (2) on its inner bottom surface, and a wire-passing groove is formed in the middle of the winding body (2); two first-turn wire clips (3) are also provided on the inner edge of the lower rotating disk (1), the two first-turn wire clips (3) are arranged opposite each other and located on the outside of the winding body (2), and the pigtail (4) passing through the wire-passing groove also passes through the two first-turn wire clips (3), so that the pigtail (4) bends towards the inner edge of the lower rotating disk (1) after passing through the wire-passing groove, so as to reduce the degree of bending of the portion of the pigtail (4) between the wire-passing groove and any of the first-turn wire clips (3); and, The upper rotating disk (5) is attached to the lower rotating disk (1) and rotatably connected to the lower rotating disk (1). Two wire holes (6) are opened on the side wall of the upper rotating disk (5). After the middle part of the pigtail (4) passes through the wire guide groove and is inserted into the two first loop wire clips (3), when the lower rotating disk (1) rotates relative to the upper rotating disk (5), the winding body (2) drives the part of the pigtail (4) located between the two first loop wire clips (3) to rotate relative to the upper rotating disk (5), thereby driving the two pigtails (4) located outside the upper rotating disk (5) to pass through the two wire guide holes (6) and then be wound on the winding body (2).

2. The pigtail storage box according to claim 1, characterized in that, The winding body (2) includes two winding posts (7), which are arranged vertically. There is a gap between the two winding posts (7), and the gap forms the wire passage groove.

3. The pigtail storage box according to claim 2, characterized in that, The bottom wall of the lower rotating disk (1) is provided with a plurality of first hollow holes (8), which allow the operator's fingers to be inserted to drive the lower rotating disk (1) to rotate relative to the upper rotating disk (5); and / or, The top wall of the upper rotating disk (5) is provided with a plurality of second hollow holes (9). The second hollow holes (9) allow the operator's fingers to be inserted and drive the upper rotating disk (5) to rotate relative to the lower rotating disk (1).

4. The pigtail storage box according to claim 2, characterized in that, The bottom of the winding post (7) is provided with a receiving groove, and a permanent magnet (10) is provided in the receiving groove.

5. The pigtail storage box according to claim 4, characterized in that, The permanent magnet (10) is fixed in the receiving groove by screws.

6. The pigtail storage box according to claim 2, characterized in that, The upper edge of the lower rotating disk (1) is engaged with the lower edge of the upper rotating disk (5).

7. The pigtail storage box according to claim 6, characterized in that, Lubricating grease is provided between the lower rotating disk (1) and the upper rotating disk (5).

8. The pigtail storage box according to claim 2, characterized in that, The outer surface of the side wall of the upper rotating disk (5) is provided with a first anti-slip texture; and / or, the outer surface of the side wall of the lower rotating disk (1) is provided with a second anti-slip texture.

9. The pigtail storage box according to claim 2, characterized in that, The opening of each of the threading holes (6) faces the tangential direction of the upper rotating disk (5).

10. The pigtail storage box according to claim 9, characterized in that, Two threading holes (6) are symmetrically arranged on both sides of the center of the upper rotating disk (5), and the opening directions of the two threading holes (6) are opposite.