A drum washing machine

Abstract

This utility model discloses a drum washing machine, in which a first inner drum is disposed inside an outer drum, and a second inner drum is disposed inside the first inner drum. The length of the second inner drum is shorter than that of the first inner drum. A first drive mechanism includes a drive assembly and a rotating shaft. The second inner drum is fixedly connected to the rotating shaft. A clutch bushing is configured to move axially along the rotating shaft to change the power source of the first inner drum, thereby placing the first inner drum in different working states. This drum washing machine simplifies the drive structure of the double inner drums and has a compact structure.

Description

Technical Field

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

[0002] A drum washing machine includes an inner drum that forms a washing chamber. One type of drum washing machine has a double-drum structure, comprising a first inner drum and a second inner drum. The first inner drum is located on the outer periphery of the second inner drum, and the washing effect is improved by the difference in rotational speed between the two inner drums. Both the first and second inner drums are equipped with a drive mechanism consisting of a gear reduction assembly. This drive structure is complex, and the gear assembly is prone to tooth breakage, reducing structural reliability.

[0003] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0004] In view of the problems pointed out in the background art, this utility model proposes a drum washing machine that simplifies the driving structure of the double inner drum and has a compact structure.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0006] In some embodiments of this application, a drum washing machine is provided, comprising:

[0007] outer cylinder;

[0008] The first inner cylinder is disposed inside the outer cylinder;

[0009] The second inner cylinder is disposed inside the first inner cylinder, and the length of the second inner cylinder is less than the length of the first inner cylinder;

[0010] The first drive mechanism includes a drive assembly and a rotating shaft, and the second inner cylinder is fixedly connected to the rotating shaft;

[0011] The clutch bushing is configured to move axially along the shaft to change the power source of the first inner cylinder, thereby placing the first inner cylinder in different working states.

[0012] In some embodiments of this application, a first bushing is fitted around the outer periphery of the rotating shaft, and the first bushing is fixedly connected to the first inner cylinder;

[0013] A second bushing is fitted around the outer periphery of the first bushing, and the second bushing is fixedly connected to the outer cylinder;

[0014] The clutch bushing is fitted around the outer periphery of the first bushing. The first bushing has a keyway. The clutch bushing moves along the keyway to connect with or disconnect from either the drive assembly or the second bushing.

[0015] In some embodiments of this application, a second driving mechanism is further included. The second driving mechanism is configured to drive the clutch sleeve to move along the keyway. The second driving mechanism includes a traction device, a tension spring, and a clutch rod. The tension spring is disposed between the traction device and the clutch rod, and one end of the clutch rod abuts against the clutch sleeve.

[0016] In some embodiments of this application, the traction device is a pull traction device with two steps of different lengths, and the traction device is configured to pull the clutch bushing to connect with the second bushing or to be located between the second bushing and the drive assembly.

[0017] In some embodiments of this application, the end of the clutch lever is provided with a rolling part, which makes rolling contact with the clutch bushing.

[0018] In some embodiments of this application, the second drive mechanism is located between the outer drum and the casing of the washing machine.

[0019] In some embodiments of this application, a stop portion is provided on the first bushing, and a compression spring is provided between the stop portion and the clutch bushing. The compression spring is configured to apply a force to the clutch bushing to move the clutch bushing toward the drive assembly, so as to connect the clutch bushing with the drive assembly.

[0020] In some embodiments of this application, the drive assembly includes a motor, a belt, and a pulley, the belt being disposed between the pulley and the motor shaft of the motor, and the pulley being fixedly connected to the rotating shaft;

[0021] The clutch bushing is configured to move toward the pulley to be fixedly connected to the pulley.

[0022] In some embodiments of this application, the clutch bushing has a first insertion portion on the side facing the pulley, and the pulley has a second insertion portion on the side facing the clutch bushing, wherein the first insertion portion and the second insertion portion are inserted into each other.

[0023] In some embodiments of this application, the clutch bushing has a third insertion portion on the side facing the second bushing, and the second bushing has a fourth insertion portion on the side facing the clutch bushing, and the third insertion portion is inserted into the fourth insertion portion.

[0024] In some embodiments of this application, the clutch bushing moves along the axial direction of the rotating shaft to different positions, so that the first inner cylinder rotates synchronously with the second inner cylinder, or locks the first inner cylinder, or allows the first inner cylinder to rotate freely under the action of friction.

[0025] Compared with the prior art, the advantages and positive effects of this utility model are:

[0026] The drum washing machine disclosed in this application has a dual-drum structure, including a first inner drum and a second inner drum. The power source for the second inner drum is directly from the first drive mechanism, which drives the rotating shaft to rotate, and the rotating shaft directly drives the second inner drum to rotate. The power source for the first inner drum is changed by the position of the clutch bushing. The drum washing machine does not require an additional independent drive mechanism for the first inner drum, simplifying the drive structure, reducing costs, and resulting in a compact structure. By changing the position of the clutch bushing, the first inner drum can be in different working states, allowing the first and second inner drums to have various relative motion states, thereby realizing different washing modes of the drum washing machine and meeting different washing needs of users.

[0027] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A cross-sectional view of a drum washing machine according to some embodiments;

[0030] Figure 2 A cross-sectional view of the clutch bushing in a first position according to some embodiments;

[0031] Figure 3 A cross-sectional view of the clutch bushing in a second position according to some embodiments;

[0032] Figure 4 This is a cross-sectional view of the clutch bushing in a third position according to some embodiments.

[0033] Figure label:

[0034] 10. Box body;

[0035] 20. Door body;

[0036] 30. Outer cylinder; 31. Rear wall of outer cylinder; 32. Central through hole;

[0037] 40. First inner cylinder; 41. First protrusion; 42. First flange;

[0038] 50. Second inner cylinder; 51. Second protrusion;

[0039] 60. Washing chamber;

[0040] 100. First drive mechanism; 110. Rotating shaft; 120. Drive assembly; 121. Motor; 122. Belt; 123. Pulley; 124. Second connector;

[0041] 200. Second drive mechanism; 210. Traction device; 220. Tension spring; 230. Clutch rod; 240. Rolling part; 250. Torsion spring;

[0042] 300, Clutch bushing; 310, First insertion part; 320, Third insertion part; 330, Compression spring;

[0043] 400. First bushing; 410. Stop part;

[0044] 500, Second bushing; 510, Fourth connector;

[0045] 610, First bolt; 620, Second bolt; 630, First bearing; 640, Second bearing; 650, First sealing part; 660, Second sealing part. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0052] In some embodiments of this application, a drum washing machine is provided. Figure 1 This is a cross-sectional view of a drum washing machine. The drum washing machine includes a housing 10, which forms the outer contour of the drum washing machine. A clothes inlet is provided on the housing 10, and the clothes inlet communicates with the internal washing chamber 60.

[0053] The drum washing machine also includes a door 20, which is rotatably connected to the cabinet 10, and the door 20 is configured to close or open the clothes inlet.

[0054] The drum washing machine also includes an outer drum 30, which is fixedly installed inside the casing 10.

[0055] The drum washing machine also includes an inner drum assembly, which is rotatably disposed inside the outer drum 30. The inner drum assembly forms a washing chamber 60.

[0056] The inner drum assembly includes a first inner drum 40 and a second inner drum 50. The first inner drum 40 is rotatably disposed inside the outer drum 30, and the second inner drum 50 is rotatably disposed inside the first inner drum 40. The length of the second inner drum 50 is less than the length of the first inner drum 40. The second inner drum 50 is located on the side away from the door 20. If the side where the door 20 is located is defined as the front end of the drum washing machine, then the second inner drum 50 is located at the rear end of the drum washing machine.

[0057] The inner wall of the first inner drum 40 is provided with a first protrusion 41, and the inner wall of the second inner drum 50 is provided with a second protrusion 51. When washing clothes, the first protrusion 41 and the second protrusion 51 play a role in stirring and friction, which helps to improve the washing effect of clothes.

[0058] The drum washing machine also includes a first drive mechanism 100, which includes a drive assembly 120 and a rotating shaft 110. One end of the rotating shaft 110 is fixedly connected to the drive assembly 120 by bolts or other fasteners, and the other end of the rotating shaft 110 is fixedly connected to the second inner drum 50 by bolts or other fasteners. The drive assembly 120 drives the rotating shaft 110 to rotate, and the rotating shaft 110 drives the second inner drum 50 to rotate.

[0059] The drum washing machine also includes a clutch bushing 300. The clutch bushing 300 is configured to move axially along the rotating shaft 110 to change the power source of the first inner drum 40, so that the first inner drum 40 is in different working states.

[0060] In other words, the power source of the second inner cylinder 50 comes directly from the first drive mechanism 100, the drive assembly 120 drives the rotating shaft 110 to rotate, and the rotating shaft 110 directly drives the second inner cylinder 50 to rotate.

[0061] The power source for the first inner drum 40 is changed by the position of the clutch bushing 300. The drum washing machine does not require an independent drive mechanism for the first inner drum 40, simplifying the drive structure, reducing costs, and resulting in a compact structure. By changing the position of the clutch bushing 300, the first inner drum 40 can be in different working states, allowing the first inner drum 40 and the second inner drum 50 to have various relative motion states, thus realizing different washing modes of the drum washing machine and meeting different washing needs of users.

[0062] In some embodiments of this application, the drive assembly 120 includes a motor 121, a belt 122, and a pulley 123. The belt 122 is disposed between the pulley 123 and the motor shaft of the motor 121, and the pulley 123 is fixedly connected to the rotating shaft 110. The clutch bushing 300 is configured to move toward the pulley 123 to be fixedly connected to the pulley 123.

[0063] The clutch bushing 300 is connected to the drive assembly 120, which means that the clutch bushing 300 is connected to the pulley 123.

[0064] In some embodiments of this application, the clutch bushing 300 moves along the axial direction of the rotating shaft 110 to different positions, so that the first inner cylinder 40 rotates synchronously with the second inner cylinder 50, or the first inner cylinder 40 is locked, or the first inner cylinder 40 rotates freely under the action of friction.

[0065] Specifically, the clutch bushing 300 moves axially along the rotating shaft 110 in three position states. At different positions, the second inner drum 50 has different working states, so that the drum washing machine can perform different washing modes.

[0066] When the clutch bushing 300 is in the first position, refer to Figure 2 The clutch bushing 300 is connected to the drive assembly 120, that is, the clutch bushing 300 is connected to the pulley 123. Since the drive assembly 120 is also fixedly connected to the rotating shaft 110, and the rotating shaft 110 is fixedly connected to the second inner drum 50, the drive assembly 120 can drive the first inner drum 40 and the second inner drum 50 to move synchronously. At this time, the inner drum assembly composed of the first inner drum 40 and the second inner drum 50 is equivalent to one inner drum, and the drum washing machine can perform a normal washing mode or a spin-drying mode.

[0067] When clutch bushing 300 is in the second position, refer to Figure 3When the clutch bushing 300 disengages from the drive assembly 120 (specifically the pulley 123) and the first inner drum 40, the power from the drive assembly 120 cannot be transmitted to the first inner drum 40. The first inner drum 40 is in a free state, meaning it is neither locked nor driven, and can rotate freely under friction. Friction sources include, for example, the frictional resistance of clothing and bearings. At this time, the drum washing machine can perform a medium-efficiency washing mode. The first inner drum 40 and the second inner drum 50 rotate at different speeds, creating a rotational washing effect on the clothes, resulting in a medium-intensity washing cycle.

[0068] When the clutch bushing 300 is in the third position, refer to Figure 4 The first inner drum 40 is locked by the clutch bushing 300, at which point only the second inner drum 50 can rotate. At this time, the drum washing machine can perform a high-intensity wash mode. With the first inner drum 40 locked and the second inner drum 50 rotating, the large difference in their rotation speeds results in a high-intensity wash.

[0069] In some embodiments of this application, reference is made to Figures 2 to 4 The outer circumference of the rotating shaft 110 is fitted with a first bushing 400, which is fixedly connected to the flange (denoted as the first flange 42) of the first inner cylinder 40 by a first bolt 610.

[0070] A first bearing 630 and a first sealing part 650 are provided between the first bushing 400 and the rotating shaft 110, with the first sealing part 650 located at the front end of the first bearing 630.

[0071] A second bushing 500 is fitted around the outer periphery of the first bushing 400. The second bushing 500 is fixedly connected to the outer cylinder 30, specifically, the second bushing 500 is fixedly connected to the rear wall 31 of the outer cylinder by a second bolt 620. A central through hole 32 is provided on the rear wall 31 of the outer cylinder, and the second bushing 500 is disposed in the central through hole 32.

[0072] A second bearing 640 and a second sealing part 660 are provided between the second bushing 500 and the inner wall of the central through hole 32, with the second sealing part 660 located at the front end of the second bearing 640.

[0073] A clutch sleeve 300 is fitted around the outer periphery of the first bushing 400. A keyway (not shown) is provided on the first bushing 400. The clutch sleeve 300 can move along the keyway to connect with or disconnect from either the drive assembly 120 or the second bushing 500.

[0074] Specifically, refer to Figure 2The clutch bushing 300 moves along the keyway toward the drive assembly 120 (specifically, the pulley 123), and is fixedly connected to the drive assembly 120. At this time, the clutch bushing 300 is in the first position, and the rotating shaft 110 and the first bushing 400 are locked together by the clutch bushing 300. Figure 2 In the indicated position, since the rotating shaft 110 and the clutch bushing 300 are both fixedly connected to the drive assembly 120, and the clutch bushing 300 is located in the keyway of the first bushing 400, the drive assembly 120 will simultaneously drive the rotating shaft 110 and the first bushing 400 to rotate, thereby achieving synchronous rotation of the first inner cylinder 40 and the second inner cylinder 50.

[0075] Reference Figure 3 The clutch bushing 300 disengages from the drive assembly 120 and moves toward the side where the second bushing 500 is located. The clutch bushing 300 is not connected to the second bushing 500. The clutch bushing 300 is located between the drive assembly 120 and the second bushing 500. At this time, the clutch bushing 300 is in the second position, and the drive assembly 120 can only drive the first inner cylinder 40 to rotate.

[0076] Reference Figure 4 The clutch sleeve 300 moves along the keyway towards the second sleeve 500, and the clutch sleeve 300 is fixedly connected to the second sleeve 500. At this time, the clutch sleeve 300 is in the third position, and the first sleeve 400 and the second sleeve 500 are locked together by the clutch sleeve 300. Figure 4 In the position shown, since the second bushing 500 is fixedly connected to the outer cylinder 30, the first bushing 400 is fixedly connected to the first inner cylinder 40, and the clutch bushing 300 locks the first bushing 400 and the second bushing 500 together, the outer cylinder 30 is fixed, so the first inner cylinder 40 is locked at this time and cannot rotate.

[0077] This embodiment changes the position of the clutch bushing 300 to alter the positional relationship between the clutch bushing 300, the drive assembly 120, and the second bushing 500. Simultaneously, by combining the fixed connection between the first bushing 400 and the first inner drum 40, and the fixed connection between the second bushing 500 and the outer drum 30, the power source of the first inner drum 40 is changed, allowing the first inner drum 40 to operate in different states and the first inner drum 40 and the second inner drum 50 to operate in different relative motion states, thus achieving different operating modes for the drum washing machine.

[0078] In some embodiments of this application, the drum washing machine further includes a second drive mechanism 200, which is configured to drive the clutch bushing 300 to move along the keyway.

[0079] The second drive mechanism 200 includes a traction device 210, a tension spring 220, and a clutch rod 230. The tension spring 220 is disposed between the traction device 210 and the clutch rod 230, with one end of the clutch rod 230 abutting against the clutch sleeve 300. One end of the tension spring 220 is connected to the traction device 210, and the other end is connected to the clutch rod 230. The clutch rod 230 is rotatable, and a torsion spring 250 is provided at the rotatable connection of the clutch rod 230. The traction device 210 drives the clutch rod 230 to move, and the clutch rod 230 drives the clutch sleeve 300 to move along the keyway to change the position of the clutch sleeve 300.

[0080] In some embodiments of this application, the end of the clutch lever 230 is provided with a rolling portion 240, which rolls in contact with the clutch bushing 300. Thus, the clutch bushing 300... Figure 3 In the second position shown, when the clutch bushing 300 rotates with the first bushing 400, the rolling part 240 rolls, preventing the end of the clutch lever 230 from directly rubbing against the clutch bushing 300, thereby avoiding wear on both parts. The rolling part 240 is, for example, a bearing.

[0081] In some embodiments of this application, the second drive mechanism 200 is located between the outer cylinder 30 and the housing 10. Specifically, the traction device 210 is fixedly connected to the rear wall 31 of the outer cylinder, and the traction device 210, tension spring 220, and clutch rod 230 are located between the rear wall 31 of the outer cylinder and the housing 10, making full use of this space and resulting in a compact structure.

[0082] In some embodiments of this application, the traction device 210 is a pull traction device with two steps of different lengths. The traction device 210 is configured to pull the clutch bushing 300 to connect with the second bushing 500 or to be located between the second bushing 500 and the drive assembly 120.

[0083] Specifically, the first step of the traction device 210 pulls the clutch bushing 300 to move to... Figure 3 In the second position shown, the clutch bushing 300 is located between the second bushing 500 and the drive assembly 120. In the second step, the traction device 210 pulls the clutch bushing 300 to move to... Figure 4 In the third position shown, the clutch bushing 300 is fixedly connected to the second bushing 500.

[0084] In some embodiments of this application, a stop portion 410 is provided on the first bushing 400, and there is a certain distance between the stop portion 410 and the pulley 123, and the clutch bushing 300 moves between the stop portion 410 and the pulley 123.

[0085] A compression spring 330 is provided between the stop part 410 and the clutch bushing 300. The compression spring 330 is configured to apply a force to the clutch bushing 300 to move the clutch bushing 300 toward the drive assembly 120, so that the clutch bushing 300 is connected to the drive assembly 120, that is, the clutch bushing 300 is connected to the pulley 123.

[0086] In some embodiments of this application, the clutch bushing 300 is provided with a first insertion portion 310 on the side facing the pulley 123, and the pulley 123 is provided with a second insertion portion 124 on the side facing the clutch bushing 300. The first insertion portion 310 and the second insertion portion 124 are inserted into each other to achieve the fixation between the clutch bushing 300 and the pulley 123.

[0087] For example, the first plug-in portion 310 has a protruding structure, and the second plug-in portion 124 has a groove structure.

[0088] In some embodiments of this application, the clutch bushing 300 is provided with a third insertion portion 320 on the side facing the second bushing 500, and the second bushing 500 is provided with a fourth insertion portion 510 on the side facing the clutch bushing 300. The third insertion portion 320 and the fourth insertion portion 510 are inserted into each other to achieve the fixation between the clutch bushing 300 and the second bushing 500.

[0089] For example, the third connector 320 is a raised structure, and the fourth connector 510 is a recessed structure.

[0090] In some embodiments of this application, the drum washing machine has a general washing mode, in which reference is made... Figure 2 The clutch bushing 300 is in the first position and is fixedly connected to the drive assembly 120, that is, the clutch bushing 300 is fixedly connected to the pulley 123. The first inner cylinder 40 and the second inner cylinder 50 rotate synchronously under the drive of the drive assembly 120. Specifically, the pulley 123 drives the rotating shaft 110 and the first bushing 400 to rotate synchronously, thereby driving the first inner cylinder 40 and the second inner cylinder 50 to rotate synchronously.

[0091] In some embodiments of this application, the drum washing machine has a medium-efficiency washing mode, in which reference is made to... Figure 3 When the clutch bushing 300 is in the second position, the clutch bushing 300 is disengaged from the pulley 123 and the second bushing 500. The first bushing 400 is disengaged from the drive of the drive assembly 120 and is also disengaged from the fixation of the second bushing 500. The first bushing 400 is in a free rotation state. The first inner cylinder 40 will rotate slightly with the friction source under the drive of friction.

[0092] In some embodiments of this application, the drum washing machine has a powerful washing mode, in which reference is made to... Figure 4The clutch bushing 300 is in the third position, and the clutch bushing 300 is fixedly connected to the second bushing 500. The first bushing 400 is locked and cannot rotate, which in turn prevents the first inner drum 40 from rotating. In this washing mode, only the second inner drum 50 can rotate.

[0093] In some embodiments of this application, the drum washing machine has a spin-drying mode, in which... (refer to...) Figure 2 The clutch bushing 300 is in the first position and is fixedly connected to the drive assembly 120, that is, the clutch bushing 300 is fixedly connected to the pulley 123. The first inner cylinder 40 and the second inner cylinder 50 rotate synchronously under the drive of the drive assembly 120.

[0094] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0095] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A drum washing machine, characterized in that, Including: outer cylinder; The first inner cylinder is disposed inside the outer cylinder; The second inner cylinder is disposed inside the first inner cylinder, and the length of the second inner cylinder is less than the length of the first inner cylinder; The first drive mechanism includes a drive assembly and a rotating shaft, and the second inner cylinder is fixedly connected to the rotating shaft; The clutch bushing is configured to move axially along the shaft to change the power source of the first inner cylinder, thereby placing the first inner cylinder in different working states.

2. The drum washing machine according to claim 1, characterized in that, The outer circumference of the rotating shaft is fitted with a first bushing, and the first bushing is fixedly connected to the first inner cylinder; A second bushing is fitted around the outer periphery of the first bushing, and the second bushing is fixedly connected to the outer cylinder; The clutch bushing is fitted around the outer periphery of the first bushing. The first bushing has a keyway. The clutch bushing moves along the keyway to connect with or disconnect from either the drive assembly or the second bushing.

3. The drum washing machine according to claim 2, characterized in that, It also includes a second drive mechanism configured to drive the clutch bushing to move along the keyway. The second drive mechanism includes a puller, a tension spring, and a clutch rod. The tension spring is disposed between the puller and the clutch rod, and one end of the clutch rod abuts against the clutch bushing.

4. The drum washing machine according to claim 3, characterized in that, The traction device is a pull traction device with two steps of different lengths, and the traction device is configured to pull the clutch bushing to connect with the second bushing or to be located between the second bushing and the drive assembly.

5. The drum washing machine according to claim 3, characterized in that, The clutch lever has a rolling part at its end, and the rolling part makes rolling contact with the clutch bushing.

6. The drum washing machine according to claim 2, characterized in that, The first bushing is provided with a stop portion, and a compression spring is provided between the stop portion and the clutch bushing. The compression spring is configured to apply a force to the clutch bushing to move the clutch bushing toward the drive assembly, so as to connect the clutch bushing with the drive assembly.

7. The drum washing machine according to claim 2, characterized in that, The drive assembly includes a motor, a belt, and a pulley. The belt is disposed between the pulley and the motor shaft of the motor, and the pulley is fixedly connected to the rotating shaft. The clutch bushing is configured to move toward the pulley to be fixedly connected to the pulley.

8. The drum washing machine according to claim 7, characterized in that, The clutch bushing has a first insertion part on the side facing the pulley, and the pulley has a second insertion part on the side facing the clutch bushing. The first insertion part and the second insertion part are inserted into each other.

9. The drum washing machine according to claim 2, characterized in that, The clutch bushing has a third insertion part on the side facing the second bushing, and the second bushing has a fourth insertion part on the side facing the clutch bushing. The third insertion part is inserted into the fourth insertion part.

10. The drum washing machine according to any one of claims 1 to 9, characterized in that, The clutch bushing moves along the axial direction of the rotating shaft to different positions, causing the first inner cylinder to rotate synchronously with the second inner cylinder, or locking the first inner cylinder, or allowing the first inner cylinder to rotate freely under the action of friction.

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