Automatic wire spool

Through the combination of magnetic roller and force feedback structure, the existing automatic winding plate has solved the problems of large resistance and high cost of release, and the low power consumption and lightweight bidirectional clutch and speed regulation function are realized, improving the winding effect.

CN223133807UActive Publication Date: 2025-07-22NANJING ZHENGZE TECH
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Patent Information

Application Number
CN202422275981.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-18
Publication Date
2025-07-22
Estimated Expiration
2034-09-18

AI Technical Summary

Technical Problem

The existing automatic winding discs have high resistance and high cost when laying out wires, and the magnetic powder clutch is expensive and consumes a lot of power, which leads to inconvenient operation for laying out wires.

Method used

The magnetic roller in the automatic separation device is used to realize the bidirectional clutch, and the resistance is adjusted by combining the force feedback structure and the S-shaped winder. The bidirectional clutch and speed regulation are achieved through the coordination of the motor and the speed control switch, reducing costs and power consumption.

Benefits of technology

It realizes a low-cost, low-power bidirectional clutch and speed regulation function, and is not subject to motor resistance when discharging the wire, has better winding effect, and is more power-saving and lightweight.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an automatic wire spool, relates to the field of wire spools, and adopts the technical scheme that the automatic wire spool comprises a bottom frame, a main support rod welded at the top of the bottom frame, a wire spool main body and a motor A for driving the wire spool main body to rotate, and the top end of the bottom frame is fixedly connected with a battery box for supplying power to the motor A; the automatic wire spool further comprises an automatic separating device, a force feedback structure and an S-shaped winder, and has the advantages that the motor A can drive the wire spool body to rotate, wire unwinding is not driven, namely, the wire spool body cannot drive the motor A to rotate, and wire unwinding operation is facilitated.
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Description

Technical Field

[0001] The utility model relates to the field of wire reels, and more specifically, to an automatic wire reel. Background Art

[0002] A wire reel is a practical tool, usually made of sturdy materials, with various shapes and sizes. It is mainly used for storing and organizing linear items such as wires, ropes, cables (hereinafter simply referred to as wires), etc. Its structure is diverse and it is portable, convenient to use at different locations, and plays an important role in many fields such as households, industries, electricity, and communications.

[0003] Currently, in order to facilitate automatic wire winding, an overrunning clutch or a magnetic powder clutch is often used for wire winding in an automatic wire reel. The overrunning clutch uses a spring to limit the position of the ball. Not only is the cost high, but the clutch cannot disengage bidirectionally. This leads to the wire reel driving the rotation of the motor when unwinding the wire, resulting in a large resistance and inconvenient unwinding operation. Although the magnetic powder clutch can adjust the speed, its price is very high, power consumption is very large, and it cannot be applied in many occasions. At the same time, the wire reel manufactured using this magnetic powder clutch is also very heavy.

[0004] Therefore, in order to solve the above technical problems, this application proposes an automatic wire reel. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an automatic wire reel.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an automatic wire reel, including a chassis, a main support rod welded to the top of the chassis, a wire reel body, and a motor A for driving the rotation of the wire reel body. A battery box for supplying power to the motor A is fixedly connected to the top end of the chassis. A speed reducer is installed at the output shaft of the motor A. The automatic wire reel further includes:

[0007] An automatic separation device, which is installed at the connection part between the motor A and the wire reel body through the speed reducer, and can disengage bidirectionally, so that the motor A drives the rotation of the wire reel body when winding the wire, and does not drive the rotation of the wire reel body when unwinding the wire;

[0008] A force feedback structure, which is mainly realized by a speed regulation switch installed on the outer side wall of the main support rod at a position slightly above, and is used to adjust the speed of the motor A driving the wire reel to wind the wire;

[0009] An S-shaped wire winder, which is driven by a reciprocating component fixed to a position slightly above the main support rod through a connecting rod A. The reciprocating component drives the back-and-forth movement of the S-shaped wire winder, and by adjusting the size of the S shape thereon, the resistance of the S-shaped wire winder to the wire is adjusted.

[0010] Preferably, the automatic separation device includes a housing of a connecting rod B penetrating through the middle part of the main support rod. The other end of the connecting rod B is connected to the main body of the winding disc. The interior of the housing has an outer ring and an inner ring, as well as a raceway located between the outer and inner rings of the housing. Four rollers are arranged in the raceway, and the rollers have magnetism. Two rollers control the forward rotation of the main body of the winding disc, and two rollers control the reverse rotation of the main body of the winding disc.

[0011] Preferably, the speed control switch includes a curved surface part fixed to the middle part of the outer side wall of the main support rod through a connecting rod C, a vertical part interconnected with the curved surface part, and a contact part in contact with the motor A. Springs A are installed inside both the curved surface part and the vertical part, and the contact part is supported by the elasticity of the springs A.

[0012] Preferably, the S-shaped wire winder includes a driving part and an adjusting component. A roller is installed at the top of the driving part, and the number of rollers is three. An S-shaped structure for restricting the wire is formed by the three rollers. The roller in the middle can adjust its lateral position through the adjusting component, thereby adjusting the size of the S shape.

[0013] Preferably, the reciprocating assembly includes a reciprocating lead screw driven by a motor B. A lead screw hole is formed inside the driving part on the S-shaped wire winder. The S-shaped wire winder is threadedly connected to the reciprocating lead screw through the lead screw hole. A slide bar is fixedly connected to the reduction gearbox of the motor B, and a sliding sleeve slidably connected to the slide bar is fixedly connected to the surface of the S-shaped wire winder.

[0014] Preferably, a handle is fixedly connected to the top of the main support rod, which is convenient for holding the whole device by hand.

[0015] Preferably, the adjusting component includes a movable block. A groove with the same width as the movable block is formed on one side of the top of the driving part. A screw rod is fixedly connected to the inner surface of the groove. A through hole for the screw rod to pass through is formed inside the movable block. A nut is threadedly connected to the outer side wall of the screw rod. A bearing is fixedly connected to the surface of the movable block, and the inner ring part of the bearing is fixed to the nut. At the same time, the screw rod also passes through the middle through groove of the bearing without contacting the bearing. The roller in the middle is installed at the top of the movable block.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] 1. In the present utility model, the rollers in the automatic separation device are designed to be magnetic. Through magnetic adhesion, it can avoid deviation, which has lower cost and better effect compared with the overrunning clutch that is limited by a spring. Moreover, the present utility model sets four rollers in the automatic separation device to achieve bidirectional rotation. Two rollers control forward rotation, and two rollers control reverse rotation, so that it can be bidirectionally clutched. In this way, when winding the line, the main body of the winding disc can be driven by motor A to rotate, while when unwinding the line, it will not be driven, that is, the main body of the winding disc cannot drive motor A to rotate, which is convenient for unwinding operation, thus overcoming the deficiencies of the overrunning clutch pointed out in the background art.

[0018] 2. When the main body of the winding disc encounters resistance, a counter torque will be formed on the reducer of motor A, thereby driving the movement of motor A, making motor A continuously contact the contact part on the speed regulation switch. The operation of the speed regulation switch is controlled through the contact part. Two springs A are arranged inside the regulation switch to always promote the reset of the contact part, ensuring that it can both accelerate and decelerate. The way the regulation switch controls the speed is that the contact part becomes faster from top to bottom. When it is at the topmost position, motor A is in the off state. In this way, the rotation speed of the main body of the winding disc for winding the line can be adjusted according to the speed of the wire being pulled and wound. After being completely relaxed, motor A will also drive the contact part to move downward due to its own gravity and reach the bottommost position to wind the line at the fastest speed. When the wire is held still, motor A stops running. In this way, speed regulation can also be carried out, and compared with the magnetic powder clutch, it is more power-saving, lighter in weight, and has very low cost, thus overcoming the deficiencies of the magnetic powder clutch pointed out in the background art.

[0019] 3. The S shape of the present utility model can form a certain resistance to the wire before it is wound around the main body of the winding disc, thereby tightening the wire, making the wire wound around the main body of the winding disc more compact and the winding effect better. And through this resistance, the above-mentioned force feedback structure can also play a more accurate role, that is, if the wire is too loose, the counter torque transmission effect is poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 is the present utility model Figure 1 partial enlarged view of structure A;

[0023] Figure 3 is the present utility model Figure 1 structural schematic diagram from another angle;

[0024] Figure 4 For the present utility model Figure 3 is an enlarged view of the partial structure B;

[0025] Figure 5 is a schematic diagram of the structure of one side inside the housing in the present utility model;

[0026] Figure 6 is a schematic diagram of the structure of the other side inside the housing in the present utility model.

[0027] In the figure: 1, chassis; 2, main support rod; 3, main body of the wire winding disc; 4, motor A; 5, battery box; 6, reducer; 7, automatic separation device; 71, housing; 72, roller; 8, connecting rod A; 9, speed regulating switch; 91, curved surface part; 92, vertical part; 93, contact part; 94, spring A; 10, S-shaped wire winder; 101, driving part; 102, roller; 103, adjusting component; 1031, movable block; 1032, groove; 1033, screw; 1034, through hole; 1035, nut; 1036, bearing; 1307, spring B; 11, connecting rod B;

[0028] 12, reciprocating assembly; 121, motor B; 122, reciprocating lead screw; 123, lead screw hole; 124, reduction box; 125, slide bar; 126, sliding sleeve; 13, handle; 14, connecting rod C. Specific embodiments

[0029] Embodiment 1

[0030] As Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, the present utility model provides an automatic wire winding disc, including a chassis 1, a main support rod 2 welded to the top of the chassis 1, a main body of the wire winding disc 3, and a motor A 4 for driving the main body of the wire winding disc 3 to rotate. The top end of the chassis 1 is fixedly connected with a battery box 5 for supplying power to the motor A 4. A reducer 6 is installed at the output shaft of the motor A 4. The top end of the main support rod 2 is fixedly connected with a handle 13 for facilitating the overall holding of the device. The automatic wire winding disc further includes:

[0031] An automatic separation device 7 is installed at the connection part where the motor A4 is connected to the winding disc main body 3 through the speed reducer 6. It can perform two-way clutch, so that the motor A4 drives the rotation of the winding disc main body 3 during wire winding, and does not drive the rotation of the winding disc main body 3 during wire unwinding. The automatic separation device 7 includes a housing 71 of a connecting rod B11 penetrating through the middle part of the main support rod 2. The other end of the connecting rod B11 is connected to the winding disc main body 3. The housing 71 has an outer ring and an inner ring inside, and a raceway located between the outer ring and the inner ring of the housing 71. Four rollers 72 are arranged in the raceway, and the rollers 72 have magnetism. In summary, in the present utility model, the rollers 72 in the automatic separation device 7 are designed to have magnetism, and through magnetic adhesion, it is avoided that they deviate. Compared with the overrunning clutch which is limited by the spring A94 (the spring A94 is cancelled in the present utility model), its cost is lower and the effect is better. Moreover, in the present utility model, four rollers 72 are arranged in the automatic separation device 7 to achieve two-way rotation. Two rollers 72 control forward rotation, and two rollers 72 control reverse rotation (the principle of other aspects of the automatic separation device 7 is the same as that of the overrunning clutch. Since the overrunning clutch is a prior art, it will not be described in detail). Thus, two-way clutch can be achieved. In this way, during wire winding, the motor A4 can drive the rotation of the winding disc main body 3, and during wire unwinding, it does not drive, that is, the winding disc main body 3 cannot drive the motor A4 to rotate, which is convenient for wire unwinding operation.

[0032] The force feedback structure is mainly realized by a speed regulation switch 9 installed at the upper part of the outer wall of the main support rod 2, and is used to adjust the speed of the wire winding disc for taking up wire driven by the motor A4; the speed regulation switch 9 includes a curved surface part 91 fixed to the middle part of the outer wall of the main support rod 2 through a connecting rod C14, a vertical part 92 communicated with the curved surface part 91, and a contact part 93 in contact with the motor A4. Springs A94 are installed inside both the curved surface part 91 and the vertical part 92, and the contact part 93 is supported by the elasticity of the springs A94. When the wire winding disc body 3 is subjected to resistance, a reaction torque will be formed on the reducer 6 of the motor A4 (the reaction torque refers to the torque generated in the opposite direction to the external torque in order to maintain balance or resist the external torque when an object is subjected to an external torque), thereby driving the movement of the motor A4, so that the motor A4 continuously contacts the contact part 93 on the speed regulation switch 9, and the operation of the speed regulation switch 9 is controlled through the contact part 93. Two springs A94 are arranged inside the regulation switch to always promote the reset of the contact part 93, ensuring that it can both accelerate and decelerate. The way the regulation switch controls the speed is that the contact part 93 becomes faster from top to bottom. When it is at the uppermost position, the motor A4 is in the off state. In this way, the rotation speed of the wire winding disc body 3 for winding wire can be adjusted according to the speed of the wire being pulled and wound. After being completely relaxed, the motor A4 (without the action of the reaction torque) will also drive the contact part 93 to move downward due to its own gravity and reach the lowermost position to take up wire at the fastest speed (meeting the requirements of fire fighting wire taking up). When the wire is pulled and held still, the motor A4 stops running. In this way, speed regulation can also be carried out. And compared with the magnetic powder clutch, it is more power-saving, lighter in weight, and very low in cost.

[0033] Embodiment 2

[0034] Such as Figure 1 、 Figure 2 And Figure 3As shown in the figure, in this embodiment, the wire winder on the wire reel in the prior art is improved, that is, the S-shaped wire winder 10, which is driven by a reciprocating component 12 fixed to the upper part of the main support rod 2 through a connecting rod A8. The reciprocating component 12 drives the S-shaped wire winder 10 to move back and forth. By adjusting the size of the S shape thereon, the resistance of the S-shaped wire winder 10 to the wire is adjusted. The S-shaped wire winder 10 includes a driving part 101 and an adjusting component 103. A roller 102 is installed at the top of the driving part 101, and the number of rollers 102 is three. An S-shaped structure for restricting the wire is formed by the three rollers 102. The roller 102 in the middle can adjust its horizontal position through the adjusting component 103, so as to adjust the size of the S shape. The adjusting component 103 includes a movable block 1031. A groove 1032 with the same width as the movable block 1031 is opened on one side of the top of the driving part 101. A screw 1033 is fixedly connected to the inner surface of the groove 1032. A through hole 1034 for the screw 1033 to pass through is opened inside the movable block 1031. A nut 1035 is threadedly connected to the outer side wall of the screw 1033. A bearing 1036 is fixedly connected to the surface of the movable block 1031, and the inner ring part of the bearing 1036 is fixed to the nut 1035. At the same time, the screw 1033 also passes through the middle through groove of the bearing 1036 and does not contact the bearing 1036. The roller 102 in the middle is installed at the top of the movable block 1031.

[0035] In this way, through the S shape, a certain resistance can be formed to the wire before it is wound around the wire reel main body 3 (in the corresponding technology, only limiting is carried out without forming an effective resistance), so as to tighten the wire, make the wire wound around the wire reel main body 3 more compact, and the winding effect is better. And through this resistance, the above-mentioned force feedback structure can also play a role more accurately. That is, if the wire is too loose, the reverse torque transmission effect is poor. And the utility model can rotate the nut 1035 clockwise or counterclockwise, so that the nut 1035 moves horizontally back and forth along the screw 1033. The nut 1035 drives the movement of the movable block 1031 through the bearing 1036. The movable block 1031 moves back and forth inside the groove 1032 (since the widths of the movable block 1031 and the groove 1032 are the same, the nut 1035 cannot drive the rotation of the movable block 1031, and can only make it rotate along the movable block 1031 through the bearing 1036 and push or pull the movement of the movable block 1031), so as to adjust the horizontal position of the movable block 1031 and the roller 102 in the middle, and thus adjust the size of the S shape to be adjusted according to different wires.

[0036] Further, a spring B1307 is sleeved on the screw rod 1033. One end of the spring B1307 is fixed to the movable block 1031, and the other end is fixed to the inner surface of the groove 1032. After the movable block 1031 moves to a proper position, the spring B1307 (the spring B1307 is in a compressed state within the moving range of the movable block 1031) can press the movable block 1031 tightly through its elastic force (of course, it will be a little more laborious for the staff to rotate the nut 1035 in this way), so as to make its position more firmly fixed and prevent it from loosening due to external forces.

[0037] The reciprocating assembly 12 includes a reciprocating lead screw 122 driven by a motor B121. A lead screw hole 123 is formed inside the driving part 101 on the S-shaped wire winder 10. The S-shaped wire winder 10 is threadedly connected to the reciprocating lead screw 122 through the lead screw hole 123. A slide bar 125 is fixedly connected to the reduction gearbox 124 of the motor B121. A sliding sleeve 126 slidably connected to the slide bar 125 is fixedly connected to the surface of the S-shaped wire winder 10. That is, the rotation of the reciprocating lead screw 122 is driven by the motor B121. The reciprocating lead screw 122 drives the back-and-forth movement of the driving part 101. The driving part 101 drives the back-and-forth movement of the sliding sleeve 126. The sliding sleeve 126 slides along the slide bar 125 to maintain the linear movement of the driving part 101. The driving part 101 can drive the wire placed on the S-shaped structure to move back and forth, so as to lay the wire back and forth for the main body 3 of the wire winding disc, making the wire wound more evenly. It should be noted that both the motor B121 and the motor A4 are controlled by a speed regulating switch 9, so that the faster the wire winding speed, the faster the speed of the motor B121, thus quickly laying the wire, and vice versa for slow wire laying. When the motor A4 stops running, the motor B121 also stops running.

[0038] The present utility model also provides a using method of the above automatic wire winding disc:

[0039] S100: Rotate the nut 1035 clockwise or counterclockwise, so that the nut 1035 makes a horizontal back-and-forth movement along the screw rod 1033. The nut 1035 drives the movement of the movable block 1031 through the bearing 1036. The movable block 1031 moves back and forth inside the groove 1032, thereby adjusting the horizontal position of the movable block 1031 and the middle roller 102, and thus adjusting the S-shaped size of the S-shaped wire winder 10 to adjust according to different wires.

[0040] S200: After adjustment, put the wire on the S-shaped wire winder 10 to form a resistance to the wire through the S-shaped structure.

[0041] S300: Then, turn on motor A4 and motor B121. Motor A4 acts on the automatic separation device 7 to ultimately drive the rotation of the wire winding disc. Motor B121 drives the rotation of the reciprocating lead screw 122, thereby adjusting the position of the S-shaped wire winder 10 back and forth for wire routing operations.

[0042] S400: The operator can control the wire in front of the S-shaped wire winder 10 to control the speed of motor A4 driving the wire winding disc main body 3 through the speed regulation switch 9 (if the wire winding disc main body 3 is released slowly, it will be wound in slowly; if it is held stationary, the wire winding disc main body 3 will stop rotating. With the setting of the adjustment switch, the pulling force exerted by the wire winding disc main body 1 on the operator is reduced, making the operation more convenient).

[0043] S500: When wire unwinding is required, the wire winding disc main body 3 will rotate in the reverse direction when pulled by the wire during unwinding. Since the automatic separation device 7 has improvements compared to the overrunning clutch and can rotate bidirectionally, there will be no resistance from motor A4 during wire unwinding.

[0044] The automatic wire winding disc of the present utility model has the following advantages:

[0045] It can have two-way clutch. In this way, during wire winding, motor A4 can drive the rotation of the wire winding disc main body 3, while during wire unwinding, it will not drive, that is, the wire winding disc main body 3 cannot drive motor A4 to rotate, facilitating wire unwinding operations.

[0046] It can be speed-regulated, and compared with the magnetic powder clutch, it is more power-saving, lighter in weight, and has a very low cost.

[0047] The S shape can form a certain resistance to the wire before it is wound around the wire winding disc main body 3, thereby tightening the wire, making the wire wound around the wire winding disc main body 3 more compact, improving the winding effect, and through this resistance, the above-mentioned force feedback structure can also play a more accurate role.

[0048] The above is only a preferred embodiment of the present utility model and does not impose any form of limitation on the present utility model. Any ordinary technician in the industry can smoothly implement the present utility model as shown in the accompanying drawings of the specification and described above. However, any minor changes, modifications, and equivalent variations made by those skilled in the art within the scope of the technical solution of the present utility model using the technical content disclosed above are equivalent embodiments of the present utility model. At the same time, any equivalent changes, modifications, and variations made to the above embodiments based on the essential technology of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An automatic wire winding reel, comprising a chassis (1), a main support rod (2) welded to the top of the chassis (1), a wire winding reel body (3), and a motor A (4) for driving the rotation of the wire winding reel body (3). The top end of the chassis (1) is fixedly connected with a battery box (5) for supplying power to the motor A (4), and is characterized in that: A reducer (6) is installed at the output shaft of the motor A (4). The automatic wire winding disc further includes: An automatic separation device (7), which is installed at the connection part where the motor A (4) is connected to the winding disc main body (3) through the reducer (6), and can perform two-way clutch, so that the motor A (4) drives the rotation of the winding disc main body (3) during wire winding, and does not drive the rotation of the winding disc main body (3) during wire unwinding; A force feedback structure, which is mainly realized by a speed regulation switch (9) installed on the upper part of the outer side wall of the main support rod (2), and is used to adjust the wire winding speed of the motor A (4) driving the winding disc; An S-shaped wire winder (10), which is driven by a reciprocating component (12) fixed to the upper part of the main support rod (2) through a connecting rod A (8). The reciprocating component (12) drives the back-and-forth movement of the S-shaped wire winder (10), and by adjusting the size of the S shape thereon, the resistance of the S-shaped wire winder (10) to the wire is adjusted.

2. The automatic wire winding reel according to claim 1, wherein: The automatic separation device (7) includes a housing (71) of a connecting rod B (11) penetrating through the middle part of the main support rod (2). The other end of the connecting rod B (11) is connected to the winding disc main body (3). The housing (71) has an outer ring and an inner ring, and a raceway located between the outer ring and the inner ring of the housing (71). Four rollers (72) are arranged in the raceway, and the rollers (72) have magnetism. Two rollers (72) control the forward rotation of the winding disc main body (3), and two rollers (72) control the reverse rotation of the winding disc main body (3).

3. The automatic wire winding reel according to claim 1, wherein: The speed regulation switch (9) includes a curved surface part (91) fixed to the middle part of the outer side wall of the main support rod (2) through a connecting rod C (14), a vertical part (92) interconnected with the curved surface part (91), and a contact part (93) in contact with the motor A (4). Springs A (94) are installed inside both the curved surface part (91) and the vertical part (92), and the contact part (93) is supported by the elasticity of the springs A (94).

4. The automatic winding reel according to claim 1, wherein: The S-shaped wire winder (10) includes a driving part (101) and an adjusting component (103). At the top of the driving part (101), three rollers (102) are installed. An S-shaped structure for restricting the wire is formed by the three rollers (102). The roller (102) in the middle can adjust its horizontal position through the adjusting component (103), so as to adjust the size of the S shape.

5. The automatic winding reel according to claim 4, wherein: The reciprocating component (12) includes a reciprocating lead screw (122) driven by a motor B (121). A lead screw hole (123) is formed inside the driving part (101) of the S-shaped wire winder (10). The S-shaped wire winder (10) is threadedly connected to the reciprocating lead screw (122) through the lead screw hole (123). A slide rod (125) is fixedly connected to the reduction gearbox (124) of the motor B (121). A sliding sleeve (126) slidably connected to the slide rod (125) is fixedly connected to the surface of the S-shaped wire winder (10).

6. The automatic winding reel according to claim 1, characterized in that: A handle (13) for conveniently holding the whole device is fixedly connected to the top of the main support rod (2).

7. An automatic wire winding reel according to claim 4, characterized in that: The adjusting member (103) includes a movable block (1031). On one side of the top of the driving part (101), a groove (1032) having the same width as the movable block (1031) is formed. A screw rod (1033) is fixedly connected to the inner surface of the groove (1032). A through hole (1034) for the screw rod (1033) to pass through is formed inside the movable block (1031). A nut (1035) is threadedly connected to the outer side wall of the screw rod (1033). A bearing (1036) is fixedly connected to the surface of the movable block (1031), and the inner ring part of the bearing (1036) is fixed to the nut (1035). At the same time, the screw rod (1033) also passes through the middle through groove of the bearing (1036) without contacting the bearing (1036). The roller (102) in the middle is installed at the top of the movable block (1031).

8. The automatic winding reel according to claim 7, wherein: A spring B (1307) is sleeved on the screw rod (1033), and one end of the spring B (1307) is fixed to the movable block (1031), and the other end is fixed to the inner surface of the groove (1032).