A rebounding line reel

Abstract

This utility model discloses an automatic retractable cable reel, relating to the field of cable storage devices. It aims to solve the problem that existing automatic retractable cable reels lack cable pull-out limit warning and limiting structures, leading to easy damage to the cable, fixing structure, and retractable mechanism. It includes a reel body with a cable wound inside, an elastic retracting mechanism, a limiting locking mechanism, and an angle-adjustable mounting base. Both ends of the cable are electrically connected to sockets, and an extension seat is provided on the circumferential side wall. It also includes a limiting seat installed on the extension seat, an auxiliary layer wrapped around the front end of the cable root, a pressing component within the limiting groove, and a guide tube at the output end of the limiting seat. Under normal conditions, the pressing roller of the pressing component driven by the coil spring is separated from the ordinary cable, without affecting normal use. This utility model achieves accurate warning and reliable limiting of the cable pull-out limit, avoiding component damage, reducing the failure rate, balancing smooth use and convenient storage, and has a long service life.

Description

Technical Field

[0001] This utility model relates to the field of wire storage device technology, and in particular to a spring-loaded wire reel that can automatically retract wires. Background Technology

[0002] Automatic retractable cord reels are a type of cord storage device with an automatic cord return function. Their core mechanism, a built-in spring-loaded cord return mechanism, automatically retracts the pulled-out cord into the reel after use, eliminating the need for manual tidying. Due to their advantages such as convenient storage, space saving, and flexible use, these reels are widely used in various scenarios including household appliance connection cords, power tool power cords, and temporary wiring, effectively solving the problems of messy and difficult-to-store traditional cords.

[0003] However, existing automatic reel-up reels still have significant drawbacks in practical use: when users pull out the cord, as the cord approaches its limit (i.e., the cord is about to be pulled to its root), most existing reels lack corresponding warning mechanisms or reliable limiting structures. This prevents users from promptly sensing that the cord is nearing its limit. If continued pulling is attempted, it can easily lead to breakage of the fixing structure at the connection between the cord and the reel, damage to the cord itself, and even damage to the built-in reel-up mechanism due to excessive stress. This directly affects the normal performance of the reel, significantly shortens its lifespan, and causes inconvenience and additional operating costs for users. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a spring-loaded reel that automatically retracts the wire when the wire is pulled out to near its limit, allowing the user to clearly judge the extension state of the wire, avoid further forced pulling, and reduce the failure rate.

[0005] This utility model discloses an automatic retractable reel, comprising a reel body, with an electric wire wound inside the reel body. One end of the electric wire extends from the middle of the reel body and is fixed relative to the reel body. The electric wire, fixedly connected to the middle of the reel body, is electrically connected to a socket. The other end of the electric wire extends retractably from an extension seat on the circumferential side wall of the reel body and is electrically connected to a socket. The reel body is internally provided with an elastic retraction mechanism for winding the electric wire and a limiting locking mechanism. An angle-adjustable mounting seat is provided on the circumferential side wall of the reel body. The reel body also includes:

[0006] A limiting seat is installed on the telescopic end of the extension seat. A limiting sliding hole is provided through the surface of the limiting seat facing the extension seat. The limiting sliding hole is connected to the extension hole of the extension seat. A limiting groove is provided in the upper middle part of the side wall of the limiting seat facing away from the extension seat. The limiting groove is connected to the limiting sliding hole. A U-shaped groove is connected to the bottom end of the limiting groove. The U-shaped groove is connected to the limiting sliding hole and aligned with the lower middle area of ​​the limiting sliding hole.

[0007] An auxiliary layer is wrapped around the circumferential sidewall of the wire at the root front end of the wire wound inside the coil body.

[0008] The extrusion assembly is installed in the limiting groove of the limiting seat. After the wire wrapped with the auxiliary layer is pulled to the underside of the extrusion assembly, the extrusion assembly extrudes the wrapping layer of the wire, increasing the pulling resistance of the wire. When the wire reel body retracts the wire, the extrusion assembly does not function.

[0009] The guide tube head is installed at the output end of the limiting seat. The guide tube head is connected to the limiting groove, and the lower middle area of ​​the guide hole is aligned with the U-shaped groove. The wire wrapped with the auxiliary layer can extend out of the extension hole, the U-shaped groove and the wire tube head.

[0010] Furthermore, the extrusion assembly includes an extrusion rod and an extrusion roller. The extrusion rod is hinged to the top of the side wall of the limiting groove. The hinged part is provided with an upward lifting mechanism for the extrusion rod. A limiting shaft is provided on the side wall of the limiting groove. Under the lifting of the upward mechanism, the extrusion rod and the limiting shaft are tightly attached. The extrusion roller is rotatably mounted on the bottom end of the inner side wall of the extrusion rod. The extrusion roller is close to but does not contact the outer side wall of the wire in the U-shaped groove. The extrusion rod is provided with a damping mechanism for the extrusion roller. When the wire wrapping the auxiliary layer is pulled below the extrusion roller, the auxiliary layer and the extrusion roller are squeezed tightly together.

[0011] Furthermore, the lifting mechanism includes a coil spring, a hinge shaft is provided at the top of the limiting groove, a hinge hole adapted to the hinge shaft is provided through the top of the inner sidewall of the extrusion rod, the hinge hole and the hinge shaft are rotatably fitted together, the coil spring is sleeved on the hinge shaft, and a protective cap is installed at the inner end of the hinge shaft, the fixed end of the coil spring is connected to the protective cap, and its movable end is connected to the inner sidewall of the extrusion rod.

[0012] Furthermore, the damping mechanism includes a squeezing rubber block, with two telescopic shafts on the side wall of the squeezing rubber block facing away from the squeezing rubber roller, and two telescopic holes penetrating the side wall of the squeezing plate facing the squeezing rubber block. The two telescopic shafts are slidably inserted into the two telescopic holes. A squeezing spring is fixedly installed on the side wall of the squeezing rubber block facing the squeezing plate, and the other end of the squeezing spring is fixedly connected to the squeezing plate. The squeezing rubber block is in close contact with the side wall of the squeezing rubber roller.

[0013] Furthermore, the outer wall of the auxiliary layer of the wire is made with a frosted surface.

[0014] Furthermore, the auxiliary layer of the wire has a tapered transition structure from its end face to the protruding side of the wire.

[0015] Furthermore, a protective shaft is installed on the side wall of the limiting groove where the limiting shaft is installed, and the extrusion rod is located between the limiting shaft and the protective shaft, with the protective shaft close to the extrusion rod but not in contact with it.

[0016] Furthermore, the protruding end of the guide tube head is provided with a rounded corner structure.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. When the wire is pulled close to its limit, the extrusion component and the auxiliary layer work together to generate significant pulling resistance, providing users with a clear warning and preventing them from forcibly pulling the wire due to a lack of awareness of the limit position.

[0019] 2. Effectively prevents breakage of the fixing structure at the connection between the wire and the reel body, damage to the wire itself, and damage to the built-in elastic winding mechanism due to excessive force, significantly reducing the failure rate of the reel.

[0020] 3. When retracting the cord, the squeezing component automatically stops functioning, without affecting the normal rebound function of the elastic retracting mechanism. It balances early warning protection with convenient storage and offers high flexibility in use.

[0021] 4. The frosted auxiliary layer, conical transition structure, protective shaft, rounded corners and other detailed designs improve structural stability and safety, and extend the overall service life of the coil. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the installation structure of the auxiliary layer of this utility model on the wire;

[0024] Figure 3 This is the right view of this utility model;

[0025] Figure 4 This is the utility model Figure 3 A cross-sectional view of the AA section;

[0026] Figure 5 This is a schematic diagram of the internal structure of the limiting seat of this utility model;

[0027] Figure 6 This is the utility model Figure 4 A magnified schematic diagram of the partial structure of B in the diagram;

[0028] Figure 7 This is the utility model Figure 5 A magnified schematic diagram of the structure of C in the middle;

[0029] The following are labels in the attached diagram: 1. Reel body; 2. Wire; 3. Socket; 4. Mounting base; 5. Limiting seat; 6. Limiting groove; 7. U-shaped groove; 8. Auxiliary layer; 9. Guide tube head; 10. Extrusion rod; 11. Extrusion roller; 12. Limiting shaft; 13. Coil spring; 14. Hinge shaft; 15. Protective cap; 16. Extrusion block; 17. Telescopic shaft; 18. Extrusion spring; 19. Conical transition structure; 20. Protective shaft; 21. Rounded corner structure. Detailed Implementation

[0030] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0031] like Figures 1 to 7 As shown, this utility model discloses an automatic retractable reel, comprising a reel body 1, with an electric wire 2 wound inside the reel body 1. One end of the electric wire 2 extends from the middle of the reel body 1 and is fixed relative to the reel body 1. The electric wire 2, fixedly connected to the middle of the reel body 1, is electrically connected to a socket 3. The other end of the electric wire 2 extends retractably from an extension seat on the circumferential side wall of the reel body 1 and is electrically connected to the socket 3. The reel body 1 is equipped with an elastic retraction mechanism and a limiting locking mechanism for the wound electric wire 2. An angle-adjustable mounting seat 4 is provided on the circumferential side wall of the reel body 1. The reel body 1 also includes:

[0032] The limiting seat 5 is installed on the telescopic end of the extension seat. The limiting seat 5 has a limiting sliding hole through the surface facing the extension seat, which is connected to the extension hole of the extension seat. The limiting seat 5 has a limiting groove 6 in the upper middle part of the side wall facing away from the extension seat, which is connected to the limiting sliding hole. The bottom end of the limiting groove 6 is connected to a U-shaped groove 7, which is connected to the limiting sliding hole and aligned with the lower middle area of ​​the limiting sliding hole.

[0033] An auxiliary layer 8 is wrapped around the circumferential sidewall of the wire 2 at the root front end inside the coil body 1.

[0034] The extrusion assembly is installed in the limiting groove 6 of the limiting seat 5. After the wire 2 wrapped with the auxiliary layer 8 is pulled to the underside of the extrusion assembly, the extrusion assembly extrudes the wrapping layer of the wire 2, increasing the pulling resistance of the wire 2. When the wire reel body 1 retracts the wire, the extrusion assembly does not function.

[0035] Guide tube head 9 is installed at the output end of the limiting seat 5. The guide tube head 9 is connected to the limiting groove 6, and the middle and lower part of the guide hole is aligned with the U-shaped groove 7. The wire 2 wrapped in the auxiliary layer 8 can extend out of the protrusion hole, the U-shaped groove 7 and the wire tube head.

[0036] In this embodiment,

[0037] Limiting seat 5: Installed on the telescopic end of the extension seat, it constructs a stable extension channel for the wire 2 through the limiting sliding hole, limiting groove 6 and U-shaped groove 7, providing a precise installation carrier for the extrusion assembly and guide tube head 9, ensuring the coordinated cooperation of each component, and limiting the movement trajectory of the wire 2.

[0038] Auxiliary layer 8: Wrapped around the front circumferential sidewall of the root of wire 2, with a thickness greater than that of ordinary wire 2, serving as the trigger carrier for the extrusion assembly. Modified TPR elastomer (with frosted surface treatment) is preferred for auxiliary layer 8, with wear-resistant silicone as an alternative.

[0039] The extrusion assembly is installed in the limiting groove 6 of the limiting seat 5. Under normal conditions, it is separate from the ordinary wire 2 and does not affect normal use. When the wire 2 is close to the limit of being pulled out, it is extruded and deformed with the auxiliary layer 8 and generates resistance with the help of damping characteristics to realize early warning. When the wire is retracted, it can be quickly reset without hindering the retraction.

[0040] Guide tube head 9: Installed at the output end of the limit seat 5 and aligned with the U-shaped groove 7, it guides and limits the extension / retraction of the wire 2, preventing the wire 2 from deviating or rubbing and wearing against the edge of the limit seat 5, and ensuring the smooth movement of the wire 2.

[0041] As a preferred embodiment of the above embodiment, the extrusion assembly includes an extrusion rod 10 and an extrusion roller 11. The extrusion rod 10 is hinged to the top of the side wall of the limiting groove 6. The hinged part is provided with an upward lifting mechanism for the extrusion rod 10. A limiting shaft 12 is provided on the side wall of the limiting groove 6. Under the lifting of the upward mechanism, the extrusion rod 10 and the limiting shaft 12 are closely attached. The extrusion roller 11 is rotatably installed at the bottom end of the inner side wall of the extrusion rod 10. The extrusion roller 11 is close to but does not contact the outer side wall of the wire in the U-shaped groove 7. The extrusion rod 10 is provided with a damping mechanism for the extrusion roller 11. When the wire wrapping the auxiliary layer 8 is pulled to below the extrusion roller 11, the auxiliary layer 8 and the extrusion roller 11 are pressed tightly together.

[0042] In this embodiment,

[0043] The extrusion rod 10 is hinged to the top of the side wall of the limiting groove 6, providing installation support for the extrusion roller 11. It works with the coil spring 13 to achieve rotational reset and can rotate slightly under the action of the auxiliary layer 8 to ensure precise extrusion between the extrusion roller 11 and the auxiliary layer 8.

[0044] Extrusion roller 11: Rotatably mounted at the bottom of extrusion rod 10, with damping characteristics, normally separated from ordinary wire 2; when wire 2 approaches its limit, it deforms under pressure with auxiliary layer 8, rotating synchronously with the pull of wire 2. During rotation, the extrusion pressure is further increased, the damping effect is enhanced, and the visibility of the early warning resistance is improved.

[0045] In one embodiment, according to the actual stability requirements of the extrusion roller 11, extrusion rods 10 can be hinged and installed on both opposite sidewalls of the limiting groove 6. The two extrusion rods 10 support the extrusion roller 11 at the same time, which can further improve the stability of the extrusion roller 11. This technology can be selected and used according to actual usage requirements and cost control.

[0046] Lifting mechanism: Provides continuous lifting force to the extrusion rod 10, drives the extrusion roller 11 to remain separated from the side wall of the ordinary wire 2, avoids additional resistance during normal use, and provides power for the extrusion rod 10 to reset when the wire is retracted.

[0047] Limiting shaft 12: Cooperates with the lifting mechanism to limit the normal position of the extrusion rod 10, ensuring that the extrusion roller 11 is accurately separated from the ordinary wire 2, and avoiding contact and friction under normal conditions.

[0048] Damping mechanism: Provides rotational damping for the extrusion roller 11, so that the extrusion roller 11 generates additional resistance when rotating, and further increases the pulling resistance in conjunction with the extrusion deformation, making it easier for users to perceive the warning signal.

[0049] As a preferred embodiment of the above, the lifting mechanism includes a coil spring 13, a hinge shaft 14 is provided at the top of the limiting groove 6, a hinge hole adapted to the hinge shaft 14 is provided through the top of the inner sidewall of the extrusion rod 10, the hinge hole and the hinge shaft 14 are rotatably fitted together, the coil spring 13 is sleeved on the hinge shaft 14, and a protective cap 15 is installed at the inner end of the hinge shaft 14. The fixed end of the coil spring 13 is connected to the protective cap 15, and its movable end is connected to the inner sidewall of the extrusion rod 10.

[0050] In this embodiment,

[0051] Coil spring 13: Sleeve on hinge shaft 14, fixed end connected to protective cap 15, movable end connected to extrusion rod 10, providing continuous and stable lifting force. Its core function is to drive extrusion rod 10 to separate extrusion roller 11 from ordinary wire 2, while ensuring that extrusion rod 10 quickly returns to its original position when retracting the wire.

[0052] Hinge shaft 14: Provides a hinge mounting fulcrum for the extrusion rod 10, enabling the extrusion rod 10 to rotate slightly, and at the same time provides a stable mounting carrier for the coil spring 13, ensuring the accurate transmission of the spring force of the coil spring 13.

[0053] Protective cap 15: Installed on the inner end of the hinge shaft 14, it fixes the fixed end of the coil spring 13, preventing the coil spring 13 from falling off, shifting or deforming, and ensuring the stability and service life of the coil spring 13.

[0054] As a preferred embodiment of the above, the damping mechanism includes a squeezing block 16, with two telescopic shafts 17 provided on the side wall of the squeezing block 16 facing away from the squeezing roller 11, and two telescopic holes provided through the side wall of the squeezing plate facing the squeezing block 16. The two telescopic shafts 17 are slidably inserted into the two telescopic holes. A squeezing spring 18 is fixedly installed on the side wall of the squeezing block 16 facing the squeezing plate, and the other end of the squeezing spring 18 is fixedly connected to the squeezing plate. The squeezing block 16 is in close contact with the side wall of the squeezing roller 11.

[0055] In this embodiment,

[0056] Extrusion block 16: It is in close contact with the side wall of the extrusion roller 11 and provides rotational damping for the extrusion roller 11 through its own friction characteristics, thereby increasing the resistance when the extrusion roller 11 rotates and further enhancing the early warning effect in conjunction with extrusion deformation.

[0057] Telescopic shaft 17: It slides into the telescopic hole of the extrusion rod 10 to guide and limit the extrusion block 16, prevent the extrusion block 16 from shifting or shaking, ensure that it is always stably attached to the extrusion roller 11, and ensure uniform damping effect.

[0058] Compression spring 18: connects the compression block 16 and the compression rod 10, provides continuous compression force to the compression block 16, ensures that the compression block 16 and the compression roller 11 are in close contact, avoids damping force fluctuations, and ensures the stability of the warning resistance.

[0059] As a preferred embodiment of the above embodiment, the outer wall of the auxiliary layer 8 of the wire 2 is provided with a frosted surface;

[0060] In this embodiment,

[0061] The outer frosted surface of the auxiliary layer 8 increases the friction between the auxiliary layer 8 and the extrusion roller 11, making the damping effect of the extrusion roller 11 more significant when it rotates. At the same time, it improves the fit after extrusion deformation, further increases the pulling resistance, and makes the warning signal clearer.

[0062] As a preferred embodiment of the above embodiment, the auxiliary layer 8 of the wire 2 is provided with a tapered transition structure 19 from its end face to the protruding side of the wire 2;

[0063] In this embodiment,

[0064] The conical transition structure of the auxiliary layer 8 guides the wire 2 wrapped in the auxiliary layer 8 to move smoothly to the bottom of the extrusion roller 11, avoiding jamming or collision between the auxiliary layer 8 and the extrusion roller 11, ensuring that the extrusion assembly triggers the warning smoothly and improving the smoothness of use.

[0065] As a preferred embodiment of the above embodiment, a protective shaft 20 is installed on the side wall of the limiting groove 6 where the limiting shaft 12 is installed, and the extrusion rod 10 is located between the limiting shaft 12 and the protective shaft 20, with the protective shaft 20 close to the extrusion rod 10 but not in contact with it;

[0066] In this embodiment,

[0067] Protective shaft 20: Installed on the side wall of the limiting groove 6, located between the limiting shaft 12 and the extrusion rod 10. Its core function is to limit the rotation angle of the extrusion rod 10, allowing only slight rotation, so as to avoid excessive rotation of the extrusion rod 10, which could cause excessive extrusion of the extrusion roller 11 and the auxiliary layer 8, damage to the wire 2, or structural misalignment, thus ensuring the working stability of the extrusion assembly.

[0068] As a preferred embodiment of the above embodiment, the protruding end of the guide tube head 9 is provided with a rounded corner structure 21;

[0069] In this embodiment,

[0070] The rounded corner structure 21 at the protruding end of the guide tube head 9 eliminates the sharp edges of the guide tube head 9 port, prevents the wire 2 from being scratched during extension or retraction, protects the insulation layer of the wire 2, improves safety in use, and at the same time reduces wear on the wire 2 and extends the service life of the wire 2.

[0071] The working principle of this utility model is as follows:

[0072] Under normal conditions, the coil spring 13 applies a continuous upward force to the extrusion rod 10 through the hinge shaft 14, causing the extrusion rod 10 to be tightly pressed against the limiting shaft 12, which drives the extrusion roller 11 to remain separated from the side wall of the ordinary wire 2. When the user pulls the wire 2, there is no additional resistance. The wire 2 can be smoothly pulled out through the extension hole of the extension seat, the limiting sliding hole of the limiting seat 5, the U-shaped groove 7 and the guide tube head 9, meeting the normal use requirements.

[0073] When the wire 2 is pulled to near its limit, the portion of wire 2 wrapped in the auxiliary layer 8 moves smoothly under the extrusion roller 11 through the conical transition structure. The thickness of the auxiliary layer 8 pushes the extrusion rod 10 to rotate slightly (the protective shaft 20 limits its rotation angle to avoid excessive deformation), causing the extrusion roller 11 to be squeezed and deformed against the frosted surface of the auxiliary layer 8. Since the extrusion roller 11 has damping (provided by the extrusion block 16, the extrusion spring 18 and the telescopic shaft 17), as the wire 2 continues to be pulled, the extrusion roller 11 rotates synchronously. During the rotation, the extrusion force against the auxiliary layer 8 is further increased. The damping effect combined with the extrusion force forms a significant and increasing pulling resistance, providing the user with a clear limit warning and preventing damage to the components caused by forced pulling.

[0074] When the user needs to reel in the cable, simply pull the cable 2 to trigger the elastic reel mechanism inside the reel body 1. The pull force generated by the elastic reel mechanism causes the cable 2 to retract in the opposite direction. At this time, the squeezing roller 11, driven by the cable 2 and with the lifting force of the coil spring 13, quickly rotates and resets, causing the squeezing rod 10 to press tightly against the limiting shaft 12 again. The squeezing roller 11 returns to its normal state of separation from the ordinary cable 2. During this process, the friction and damping force between the squeezing roller 11 and the auxiliary layer 8 are insufficient to hinder the pull force of the elastic reel mechanism, and the cable 2 is smoothly retracted into the reel body 1, completing the reel reset. The entire process balances the smoothness of normal use, the warning protection of extreme conditions, and the convenience of reeling in, effectively extending the service life of the reel.

[0075] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A resilient reel that can automatically retract wire, comprising a reel body (1), wherein an electric wire (2) is wound inside the reel body (1), one end of the electric wire (2) extends from the middle of the reel body (1) and is fixed relative to the reel body (1), the electric wire (2) fixedly connected to the middle of the reel body (1) is electrically connected to a socket (3), the other end of the electric wire (2) extends retractably from an extension seat on the circumferential side wall of the reel body (1), the other end of the electric wire (2) is electrically connected to the socket (3), the reel body (1) is provided with an elastic winding mechanism and a limiting locking mechanism for the wound electric wire (2), and the circumferential side wall of the reel body (1) is provided with an angle-adjustable mounting seat (4), characterized in that, Also includes: A limiting seat (5) is installed on the telescopic end of the extension seat. A limiting sliding hole is provided through the surface of the limiting seat (5) facing the extension seat. The limiting sliding hole is connected to the extension hole of the extension seat. A limiting groove (6) is provided in the upper middle part of the side wall of the limiting seat (5) facing away from the extension seat. The limiting groove (6) is connected to the limiting sliding hole. A U-shaped groove (7) is connected to the bottom end of the limiting groove (6). The U-shaped groove (7) is connected to the limiting sliding hole and is aligned with the lower middle area of ​​the limiting sliding hole. The circumferential sidewall of the wire (2) at the root end of the wire (2) wound inside the coil body (1) is wrapped with an auxiliary layer (8); The extrusion assembly is installed in the limiting groove (6) of the limiting seat (5). After the wire (2) wrapped with the auxiliary layer (8) is pulled to the lower side of the extrusion assembly, the extrusion assembly extrudes the wrapping layer of the wire (2) to increase the pulling resistance of the wire (2). When the wire reel body (1) retracts the wire, the extrusion assembly does not work. The guide tube head (9) is installed at the output end of the limiting seat (5). The guide tube head (9) is connected to the limiting groove (6), and the middle and lower part of the guide hole is aligned with the U-shaped groove (7). The wire (2) wrapped in the auxiliary layer (8) can extend out of the protrusion hole, the U-shaped groove (7) and the wire tube head.

2. The spring-loaded reel with automatic reel-up capability as described in claim 1, characterized in that, The extrusion assembly includes an extrusion rod (10) and an extrusion roller (11). The extrusion rod (10) is hinged to the top of the side wall of the limiting groove (6). The hinged part is provided with an upward lifting mechanism for the extrusion rod (10). A limiting shaft (12) is provided on the side wall of the limiting groove (6). Under the lifting of the upward mechanism, the extrusion rod (10) and the limiting shaft (12) are closely attached. The extrusion roller (11) is rotatably installed at the bottom end of the inner side wall of the extrusion rod (10). The extrusion roller (11) is close to but does not contact the outer side wall of the wire in the U-shaped groove (7). The extrusion rod (10) is provided with a damping mechanism for the extrusion roller (11). When the wire wrapping the auxiliary layer (8) is pulled to the bottom of the extrusion roller (11), the auxiliary layer (8) and the extrusion roller (11) are squeezed tightly together.

3. A spring-loaded reel for automatic reel winding as described in claim 2, characterized in that, The lifting mechanism includes a coil spring (13), a hinge shaft (14) is provided at the top of the limiting groove (6), and a hinge hole adapted to the hinge shaft (14) is provided through the top of the inner side wall of the extrusion rod (10). The hinge hole and the hinge shaft (14) are rotatably fitted together. The coil spring (13) is sleeved on the hinge shaft (14), and a protective cap (15) is installed at the inner end of the hinge shaft (14). The fixed end of the coil spring (13) is connected to the protective cap (15), and its movable end is connected to the inner side wall of the extrusion rod (10).

4. A spring-loaded reel for automatic reel winding as described in claim 2, characterized in that, The damping mechanism includes a squeezing block (16), and two telescopic shafts (17) are provided on the side wall of the squeezing block (16) facing away from the squeezing roller (11). Two telescopic holes are provided through the side wall of the squeezing plate facing the squeezing block (16). The two telescopic shafts (17) are slidably inserted into the two telescopic holes. A squeezing spring (18) is fixedly installed on the side wall of the squeezing block (16) facing the squeezing plate. The other end of the squeezing spring (18) is fixedly connected to the squeezing plate. The squeezing block (16) is in close contact with the side wall of the squeezing roller (11).

5. A spring-loaded reel for automatic reel winding as described in claim 1, characterized in that, The outer wall of the auxiliary layer (8) of the wire (2) is made of frosted material.

6. A spring-loaded reel for automatic reel take-up as described in claim 1, characterized in that, The auxiliary layer (8) of the wire (2) has a tapered transition structure (19) from its end face to the protruding side of the wire (2).

7. A spring-loaded reel for automatic reel winding as described in claim 1, characterized in that, The limiting groove (6) has a protective shaft (20) installed on the side wall of the limiting shaft (12). The extrusion rod (10) is located between the limiting shaft (12) and the protective shaft (20). The protective shaft (20) is close to the extrusion rod (10) but does not contact it.

8. A spring-loaded reel for automatic reel winding as described in claim 1, characterized in that, The extended end of the guide tube head (9) is provided with a rounded corner structure (21).

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