Winder

Abstract

The utility model discloses a winder which comprises a winding wheel and a power line, the winding wheel is formed by connecting a first wheel disc and a second wheel disc into a whole, a winding shaft is arranged in the middle of the winding wheel, the power line is wound on the winding wheel, the winding wheel can rotate around the winding shaft, a pressing plate is fixed to the side, away from the second wheel disc, of the first wheel disc, and the winding shaft penetrates through the pressing plate and is in clearance fit with the pressing plate. The winder further comprises a pair of coil springs and a pair of rotating shafts, the pair of rotating shafts are fixed to the pressing plate and are symmetrically arranged relative to the winding shaft, one end of one coil spring is fixedly connected with one rotating shaft, the other end of the coil spring is fixedly connected with the winding shaft, one end of the other coil spring is fixedly connected with the other rotating shaft, and the other end of the other coil spring is fixedly connected with the winding shaft. According to the winder, the change of the take-up speed is small in the whole take-up process, the use experience effect of a user is improved, and meanwhile the effect of protecting a power line is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cable reel technology, and in particular to a cable reel. Background Technology

[0002] Vacuum cleaners usually come with a long power cord to increase the cleaning range, so some vacuum cleaners have a cord reel to store the power cord.

[0003] Existing cord reels typically consist of a coil spring, a winding spool, an adjusting roller, and a reel pressure plate. One end of the coil spring is fixed to the winding spool, and the other end is fixed to the adjusting roller. The winding spool passes through the adjusting roller and the reel pressure plate, remaining stationary. The reel pressure plate is fixed to the adjusting roller with screws, securing the coil spring to the roller. When the adjusting roller rotates, it tightens or loosens the coil spring, thus pulling the cord outward and retracting it inward. However, in actual production and use, considering that the coil spring may fatigue and the cord may become difficult to retract after prolonged use, the initial force is often set too high. This results in an extremely fast initial retraction speed, which can easily cause the cord to tangle and the plug to be repeatedly struck by the outlet, potentially causing a break in the internal copper wires near the plug. As the cord is almost fully retracted, the retraction force decreases, and the retraction speed slows down. Therefore, the retraction speed varies greatly throughout the entire process, resulting in a poor user experience. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cable reel that exhibits minimal variation in reel speed throughout the entire winding process, thereby improving the user experience and protecting the power cord.

[0005] This utility model is achieved through the following technical solution:

[0006] A cable reel includes a reel consisting of a first reel and a second reel connected together and having a reel shaft in between, and a power cord wound on the reel. The reel is rotatable around the reel shaft. A pressure plate is fixed to the side of the first reel opposite to the second reel. The reel shaft passes through the pressure plate and is clearance-fitted with the pressure plate. The cable reel also includes a pair of coil springs and a pair of rotating shafts. The pair of rotating shafts are fixed to the pressure plate and symmetrically arranged about the reel shaft. One end of one coil spring is fixedly connected to one of the rotating shafts and the other end is fixedly connected to the reel shaft. One end of the other coil spring is fixedly connected to the other rotating shaft and the other end is fixedly connected to the reel shaft.

[0007] When the power cord is fully wound up, both of the pair of coil springs are wound onto the coil spool.

[0008] When the power cord is fully extended, the pair of coil springs are respectively wound around the corresponding shaft.

[0009] Further, the outer circumferential surface of the winding shaft is fixedly sleeved with a first shaft sleeve, and one end of each of the pair of winding springs is clamped with the first shaft sleeve.

[0010] Further, a pair of first clamping holes symmetrically arranged with respect to the winding shaft are arranged on the first shaft sleeve, and the one end of each of the pair of winding springs has a clamping portion in a T-shaped structure, and the clamping portions of the pair of winding springs are correspondingly clamped with the pair of first clamping holes.

[0011] Further, the first shaft sleeve comprises an inner fixed portion and an outer fixed portion, and a gap in communication with the first clamping hole is formed between the inner fixed portion and the outer fixed portion, and the clamping portion comprises a longitudinal portion and a transverse portion connected with each other, the longitudinal portion passes through the first clamping hole, and the transverse portion is limited in the gap.

[0012] Further, in the axial direction, the longitudinal portion is at least partially shorter than the transverse portion, and the connection between the longitudinal portion and the transverse portion constitutes a limiting portion for cooperating with the side wall of the first clamping hole to be fixed.

[0013] Further, the width of the transverse portion is longer than the width of the first clamping hole.

[0014] Further, the outer circumferential surface of the rotating shaft is fixedly sleeved with a second shaft sleeve, and the other end of each of the pair of winding springs is clamped with the corresponding second shaft sleeve.

[0015] Further, a second clamping hole for fixedly accommodating the other end of the winding spring is arranged on the second shaft sleeve.

[0016] Further, the winding device further comprises a cover plate, and the cover plate is fixedly connected with the first disc to avoid the winding spring from being separated from the winding shaft or the rotating shaft.

[0017] Further, the end of the rotating shaft away from the pressing plate is matched with the cover plate.

[0018] Further, a matching hole is arranged on the cover plate, and the end of the rotating shaft away from the pressing plate is fixedly matched with the matching hole.

[0019] Further, an opening for the winding shaft is further arranged on the cover plate, and the winding shaft is gap-matched with the opening.

[0020] Further, when the power cord is in the winding state, the pair of winding springs are wound on the winding shaft in an interlaced manner.

[0021] Further, the first disc has a mounting cavity, and the pair of winding springs and the pressing plate are mounted in the mounting cavity.

[0022] Furthermore, the cord reel is used in a vacuum cleaner.

[0023] Compared with existing technologies, the advantages of this utility model are:

[0024] By incorporating two coiling springs, when the power cord is in the winding phase, the pair of springs alternately wind onto the reel. During unwinding, the reel rotates counterclockwise against the springs' elasticity, and the pair of springs on the reel gradually wind around the two rotating shafts on either side. When unwinding is complete, the pair of springs wind onto the two rotating shafts on either side. When winding up, the reel rotates clockwise under the springs' elasticity and returns to its initial state, completing the winding process. Throughout the winding process, the torque remains essentially constant, meaning the reel achieves constant force, resulting in minimal changes in winding speed, improving the user experience, and protecting the power cord. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the cable reel;

[0026] Figure 2 This is a schematic diagram of the cable reel in the winding-up state.

[0027] Figure 3 This is a schematic diagram of the cable reel in the unloading state.

[0028] Figure 4 This is an exploded view of a portion of the cable reel's structure.

[0029] Figure 5 This is a schematic diagram of the assembly structure of the winding spool and the first bushing;

[0030] Figure 6 This is a partial structural diagram of a cable reel;

[0031] Figure 7 This is a partial structural diagram of a cable reel;

[0032] Figure 8 This is a schematic diagram of the pressure regulating wheel assembly;

[0033] Figure 9 This is a schematic diagram of the coil spring assembly.

[0034] Figure 10 This is a schematic diagram of the assembly structure of the pressure regulating wheel assembly and the coil spring assembly;

[0035] Figure 11 This is an exploded view of a partial structure of the coil holder assembly;

[0036] Figure 12 A partial structural diagram of the coil holder assembly.

[0037] Figure 13 is a structure exploded view of the cord reel part;

[0038] Figure 14 is a structure schematic view of the winding spring.

[0039] 1, cord reel; 2, first disc; 20, mounting cavity; 3, second disc; 4, winding shaft; 40, first shaft sleeve; 400, inner fixing part; 401, outer fixing part; 41, first clamping hole; 402, gap; 403, limiting groove; 42, limiting block; 5, pressing plate; 6, winding spring; 60, clamping part; 600, longitudinal part; 601, transverse part; 602, limiting part; 7, rotating shaft; 70, second shaft sleeve; 71, second clamping hole; 8, cover plate; 80, matching hole; 81, opening; 10, butterfly piece; 11, contact insert; 12, base; 120, stand; 13, button; 14, rubber wheel; 15, return spring; 16, large copper ring; 17, small copper ring; 18, copper ring insert. DETAILED DESCRIPTION

[0040] The technical solutions of the utility model are further described in detail below in combination with preferred embodiments and the drawings. In the description of the utility model, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited. The embodiments described below with reference to the drawings are exemplary and are intended to explain the utility model, and should not be understood as limiting the utility model.

[0041] As Figures 1-7As shown, an embodiment of the present invention discloses a cord reel, which is applied to a vacuum cleaner. It includes a cord reel 1 consisting of a first reel 2 and a second reel 3 integrated together, with a cord reel 4 in between; a power cord wound on the cord reel 1; a pair of springs 6; and a pair of shafts 7. The cord reel 1 can rotate around the cord reel 4 to reel in or unreel the power cord. A pressure plate 5 is fixed to the side of the first reel 2 opposite to the second reel 3. The cord reel 4 passes through the pressure plate 5 and is clearance-fitted with it. The pair of shafts 7 are fixed to the pressure plate 5 and symmetrically arranged about the cord reel 4. One end of one of the springs 6 is fixedly connected to one of the shafts 7, and the other end is fixedly connected to the cord reel 4. One end of the other spring 6 is fixedly connected to the other shaft 7, and the other end is fixedly connected to the cord reel 4. When the power cord is fully reeled in, both springs 6 are wound on the cord reel 4. When the power cord is fully extended, the springs 6 are wound around their respective shafts 7. During the winding and unwinding process, some coil springs 6 are wound around both the rotating shaft 7 and the winding shaft 4.

[0042] like Figure 10 As shown, the first disc 2 has a mounting cavity 20, in which a pair of coil springs 6 and a pressure plate 5 are installed, reducing installation difficulty and shrinking the size of the reel.

[0043] refer to Figure 2 When the power cord is in the winding state, a pair of coil springs 6 are wound alternately onto the winding spool 4. During the unwinding process, the winding wheel 1 rotates counterclockwise against the elastic force of the coil springs 6, and the pair of coil springs 6 on the winding spool 4 gradually wind around the rotating shafts 7 on both sides during the unwinding process. (Refer to...) Figure 3 When the unwinding is complete, a pair of coil springs 6 wind around the two rotating shafts 7 on either side. When rewinding, the reel 1 rotates clockwise under the elastic force of the coil springs 6 and returns to the state shown in Figure 2, thus completing the rewinding process. Throughout the rewinding process, the torque remains essentially constant, meaning the reel achieves constant force, resulting in minimal variation in rewinding speed. This improves the user experience and protects the power cord.

[0044] like Figure 2 In this embodiment, the specifications of the pair of coil springs 6 are completely identical, and each is pre-wound one turn on the rotating shaft 7.

[0045] like Figure 5 As shown, a first bushing 40 is fixedly sleeved on the outer circumference of the winding spool 4. One end of each pair of coil springs 6 is snapped into the first bushing 40. The coil springs 6 and the first bushing 40 are connected by snapping, which facilitates the replacement of the coil springs 6.

[0046] like Figure 5As shown, the inner circumferential surface of the first shaft sleeve 40 is provided with a limiting groove 403, and the outer circumferential surface of the winding shaft 4 is provided with a limiting block 42, the limiting block 42 and the limiting groove 403 are matched with each other, and in use, the first shaft sleeve 40 and the winding shaft 4 remain in a static state.

[0047] As shown in the drawings, the first shaft sleeve 40 is provided with a pair of first clamping holes 41 which are symmetrical about the winding shaft 4, and one end of the winding spring 6 is provided with a clamping portion 60 in a T-shaped structure, and the clamping portions 60 of the pair of winding springs 6 are respectively clamped with the pair of first clamping holes 41, so that the disassembly or assembly between the winding spring 6 and the first shaft sleeve 40 can be completed without the aid of disassembly tools. Figure 6 Further, the first shaft sleeve 40 comprises an inner fixed portion 400 and an outer fixed portion 401, and a gap 402 which communicates with the first clamping hole 41 is formed between the inner fixed portion 400 and the outer fixed portion 401, and the clamping portion 60 comprises a longitudinal portion 600 and a transverse portion 601 which are connected with each other, the longitudinal portion 600 passes through the first clamping hole 41, and the transverse portion 601 is limited in the gap 402. By providing the gap 402 in the first shaft sleeve 40, not only the weight of the first shaft sleeve 40 can be reduced, but also the user can know whether the clamping portion 60 of the winding spring 6 is assembled in place with the first shaft sleeve 40 by visual observation.

[0048] As shown in the drawings, the longitudinal portion 600 is at least partially shorter than the transverse portion 601 in the axial direction, the connection between the longitudinal portion 600 and the transverse portion 601 forms a limiting portion 602, and the limiting portion 602 is used for cooperating with the side wall of the first clamping hole 41 to be fixed. The width of the transverse portion 601 is longer than the width of the first clamping hole 41, and in the assembly process, the transverse portion 601 is inclined to enter the outer fixed portion 401, and then due to the fact that the winding spring 6 is fixed on the rotating shaft 7, the transverse portion 601 is forced to be straightened and cooperates with the outer fixed portion 401 to be fixed.

[0049] Figure 6 Figure 14 In order to realize the detachable connection between the other end of the winding spring 6 and the rotating shaft 7, the outer circumferential surface of the rotating shaft 7 is fixedly provided with a second shaft sleeve 70, and the other end of the pair of winding springs 6 is clamped with the corresponding second shaft sleeve 70. Specifically, the second shaft sleeve 70 is provided with a second clamping hole 71 which is used for fixedly accommodating the other end of the winding spring 6.

[0050] In order to avoid the winding spring 6 from being separated from the winding shaft 4 or the rotating shaft 7, the winding device further comprises a cover plate 8 which is fixedly connected with the first disc 2 to limit the winding spring 6.

[0051] Specifically, the cover plate 8 is provided with a matching hole 80, and the one end of the rotating shaft 7 which is away from the pressing plate 5 is fixedly matched with the matching hole 80. In addition, the cover plate 8 is also provided with an opening 81 for the winding shaft 4, and the winding shaft 4 is gap-matched with the opening 81.

[0052] ​​​

[0053] As shown in Figure 8 , the winding device further comprises a butterfly piece 10 and a contact insert piece 11, one side of the contact insert piece 11 is fixedly connected with the first disc 2, the butterfly piece 10 is fixed on the side of the contact insert piece 11 away from the first disc 2 by screws, the copper wire in the power cord is welded on the butterfly piece 10, and the winding shaft 4 is inserted into the contact insert piece 11.

[0054] As shown in Figure 11 and Figure 12 , the winding device further comprises a base 12, a button 13, a rubber wheel 14 and a reset spring 15, the winding wheel 1 is rotatably arranged on the base 12, a stand 120 is arranged on the base 12, the button 13 is rotatable around the stand 120, the reset spring 15 is sleeved on the stand 120 and used for resetting the button 13, and the rubber wheel 14 is arranged on the button 13 and abuts against the outer circumferential surface of the second disc 3 in the winding wheel 1. When the power cord is in a pulled-out state, the rubber wheel 14 can be used to limit the rotation reset of the winding wheel 1. When a user needs to wind the power cord, the button 13 is pressed to make the rubber wheel 14 disengage from the second disc 3, and the winding wheel 1 rotates under the elastic force of the winding spring 6 and recovers the power cord.

[0055] As shown in Figure 13 , the winding device further comprises a large copper ring 16, a small copper ring 17 and a copper ring insert piece 18, the large copper ring 16 and the small copper ring 17 are clamped on one side of the copper ring insert piece 18, the other side of the copper ring insert piece 18 is arranged on the base 12, the butterfly piece 10 is provided with two and respectively contacts the large copper ring 16 and the small copper ring 17, and the large copper ring 16 and the small copper ring 17 are formed with electric plugs, and the electric plugs are used to be connected with external power supply plugs.

[0056] During assembly, referring to Figure 8 , the butterfly piece 10 is first fixed on the contact insert piece 11 by screws, then the power cord is welded on the contact insert piece 11, the winding shaft 4 is inserted into the contact insert piece 11, then the whole is assembled on the first disc 2 and fixed by screws, and thus the assembly of the pressure regulating wheel is completed; referring to Figure 9 , then the two second shaft sleeves 70 are fixed on the rotating shaft 7, then the two winding springs 6 are sleeved on the second shaft sleeves 70 and the other ends of the winding springs 6 are clamped into the second clamping holes 71 of the second shaft sleeves 70, then the whole is assembled on the pressing plate 5, then the assembled part is assembled into the pressure regulating wheel assembly, then the first shaft sleeve 40 is sleeved into the winding shaft 4, and one end of the winding spring 6 is clamped on the first shaft sleeve 40, referring to Figure 10 , the cover plate 8 is covered to press the winding spring 6, and finally the cover plate 8 is fixed by screws, and thus the assembly of the winding spring assembly and the pressure regulating wheel assembly is completed; referring to Figure 11 and Figure 12Then the rubber wheel 14 is installed in the button 13, the reset spring 15 is sleeved on the column 120 of the base 12, and the button 13 is fixed on the base 12 by a screw, and the assembly of the take-up post is completed; referring to Figure 13 Finally, the large copper ring 16 and the small copper ring 17 are clamped into the copper ring insert 18, then the second dial 3 and the pressure regulating wheel assembly are assembled, the copper ring insert 18 provided with the large copper ring 16 and the small copper ring 17 is installed into the second dial 3, and finally the take-up post assembly is assembled with the assembled assembly and is fixed by a screw.

[0057] The above-mentioned embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope. It should be pointed out that for ordinary skilled persons in the art, several deformations and improvements can be made without departing from the utility model concept, and these belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A cord reel comprising a cord reel (1) integrated by a first wheel disc (2) and a second wheel disc (3) with a cord reel shaft (4) in between, and a power cord wound on the cord reel (1), the cord reel (1) being rotatable around the cord reel shaft (4), the first wheel disc (2) being fixed with a pressure plate (5) on the side facing away from the second wheel disc (3), the cord reel shaft (4) passing through the pressure plate (5) with a clearance fit between the cord reel shaft (4) and the pressure plate (5), characterized in that, The cord reel further comprises a pair of winding springs (6) and a pair of rotating shafts (7) fixed on the pressing plate (5) and symmetrically arranged relative to the winding shaft (4), one end of one of the winding springs (6) is fixedly connected with one of the rotating shafts (7), and the other end is fixedly connected with the winding shaft (4), one end of the other winding spring (6) is fixedly connected with the other rotating shaft (7), and the other end is fixedly connected with the winding shaft (4); The outer periphery of the winding shaft (4) is fixedly sleeved with a first shaft sleeve (40), and one end of each of the pair of winding springs (6) is clamped with the first shaft sleeve (40).

2. The cord reel according to claim 1, characterized in that When the power cord is in a fully reeled state, the pair of winding springs (6) are reeled on the winding shaft (4); When the power cord is in a fully extended state, the pair of winding springs (6) are wound on the corresponding rotating shaft (7) respectively. The outer periphery of the winding shaft (4) is fixedly sleeved with a first shaft sleeve (40), and one end of each of the pair of winding springs (6) is clamped with the first shaft sleeve (40).

3. The cord reel according to claim 2, characterized in that The first shaft sleeve (40) is provided with a pair of first clamping holes (41) symmetrically relative to the winding shaft (4), one end of the winding spring (6) has a clamping portion (60) in a "T" shape structure, and the clamping portions (60) of the pair of winding springs (6) are correspondingly clamped with a pair of the first clamping holes (41) respectively.

4. The cord reel according to claim 3, wherein The first shaft sleeve (40) comprises an inner fixed portion (400) and an outer fixed portion (401), and a gap (402) in communication with the first clamping hole (41) is formed between the inner fixed portion (400) and the outer fixed portion (401), the clamping portion (60) comprises a longitudinal portion (600) and a transverse portion (601) connected with each other, the longitudinal portion (600) passes through the first clamping hole (41), and the transverse portion (601) is limited in the gap (402).

5. The cord reel according to claim 4, wherein In the axial direction, the longitudinal portion (600) is at least partially shorter than the transverse portion (601), the connection between the longitudinal portion (600) and the transverse portion (601) forms a limiting portion (602), and the limiting portion (602) is used for cooperating with the side wall of the first clamping hole (41) to be fixed.

6. The cord reel according to claim 5, wherein The width of the transverse portion (601) is longer than the width of the first clamping hole (41).

7. The cord reel according to claim 1, wherein The outer periphery of the rotating shaft (7) is fixedly sleeved with a second shaft sleeve (70), and the other end of each of the pair of winding springs (6) is clamped with the corresponding second shaft sleeve (70).

8. The cord reel according to claim 7, characterized in that The second shaft sleeve (70) is provided with a second clamping hole (71) for fixedly accommodating the other end of the winding spring (6).

9. The cord reel according to claim 1, wherein The cord reel further comprises a cover plate (8) fixedly connected with the first wheel disc (2) for avoiding the winding spring (6) from being separated from the winding shaft (4) or the rotating shaft (7).

10. The cord reel according to claim 9, wherein One end of the rotating shaft (7) away from the pressing plate (5) is matched with the cover plate (8).

11. The cord reel according to claim 10, wherein The cover plate (8) is provided with a matching hole (80), and one end of the rotating shaft (7) away from the pressing plate (5) is fixedly matched with the matching hole (80).

12. The cord reel of claim 9, wherein, The cover plate (8) is further provided with an opening (81) for the winding shaft (4), and the winding shaft (4) is in clearance fit with the opening (81).

13. The cord reel according to claim 1, wherein When the power cord is in the winding state, the pair of winding springs (6) are wound on the winding shaft (4) in an interlaced manner.

14. The cord reel according to claim 1, wherein The first wheel disc (2) is provided with a mounting cavity (20), and the pair of winding springs (6) and the pressing plate (5) are mounted in the mounting cavity (20).

15. The cord reel according to claim 1, wherein The winding device is applied to a dust collector.

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