Clutch device for washing machine

Abstract

The clutch device is used for being installed in the washing machine, the washing machine comprises an outer barrel, an inner barrel and a motor, and the clutch device comprises a main shaft and a rotating shaft used for connecting the inner barrel and the motor so that the motor can drive the inner barrel to rotate; the clamping ring is fixed on the main shaft and is positioned between the outer cylinder and the inner cylinder; the chuck is located between the outer cylinder and the inner cylinder and used for installing the cleaner, and a clamping hole matched with the clamping ring is formed in the center of the chuck; the clutch driving part is connected with the chuck and used for pushing the chuck to axially move relative to the clamping ring so that the chuck can be connected with or separated from the clamping ring, and when the chuck is connected with the clamping ring, the main shaft can drive the chuck to rotate along with the chuck; when the chuck is separated from the clamping ring, the main shaft can rotate relative to the chuck. By means of the clutch device in the scheme, the cleaning direction of the cleaner can be controlled according to use requirements, and the cleaner can clean the outer barrel and the inner barrel.

Description

Technical Field

[0001] The present application relates to the technical field of washing machines, and in particular to a clutch device for washing machines. Background Art

[0002] The drum structure of the washing machine includes an outer drum and an inner drum structure. The outer drum is a fixed drum, and the inner drum is installed in the outer drum. The rotating shaft of the motor passes through the bottom of the outer drum and is connected to the inner drum. The motor drives the inner drum to rotate, so that the inner drum pushes the clothes to run and realize the washing function. There will be a certain gap between the inner drum and the outer drum. The inner wall of the outer drum and the outer wall of the inner drum are walls that the clothes cannot touch. After long-term use, dirt is easily accumulated on the inner wall of the outer drum and the outer wall of the inner drum to breed bacteria. Therefore, some washing machines are integrated with a self-cleaning system to realize the automatic cleaning function. However, the self-cleaning function of the existing washing machine can generally only clean the inner wall of the outer drum, and cannot clean the outer wall of the inner drum. For example, China's authorized patent CN219808127U discloses an outer drum cleaning system and a washing machine, which directly sets a convex rib structure with a water spray hole and a water storage cavity on the side wall of the inner drum, and introduces a water diversion pipe into the water storage cavity. When working, the convex rib structure can rotate with the inner drum, and the water spray hole sprays water toward the inner wall of the outer drum to realize the cleaning of the inner wall of the outer drum. The reason is that the cleaning structure in the prior art can only rotate with the inner drum, so it cannot clean the outer wall of the inner drum. In order to clean the outer wall of the inner drum, it is necessary to design a cleaning structure that can rotate relative to the inner drum, and when cleaning the outer drum, the cleaning device also needs to be able to rotate relative to the outer drum. Therefore, how to control the operating state of the cleaning structure according to the use requirements so that the cleaning structure can choose to clean the outer drum or the inner drum has become an urgent problem to be solved in the field of washing machines. Utility Model Content

[0003] The purpose of the embodiments of the utility model is to provide a clutch device for a washing machine, which can solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] A clutch device for a washing machine, used for being installed in a washing machine, wherein the washing machine comprises an outer drum, an inner drum and a motor, and comprises:

[0006] A main shaft, used to connect the inner cylinder and the rotating shaft of the motor, so that the motor can drive the inner cylinder to rotate;

[0007] A clamping ring, fixed on the main shaft and located between the outer cylinder and the inner cylinder;

[0008] A chuck is located between the outer cylinder and the inner cylinder and is used to install the cleaner. A chuck hole is provided at the center of the chuck to cooperate with the clasp;

[0009] A clutch drive is connected to the chuck and is used to push the chuck to move axially relative to the retaining ring so that the chuck and the retaining ring are engaged or separated. When the chuck and the retaining ring are engaged, the main shaft can drive the chuck to rotate; when the chuck and the retaining ring are separated, the main shaft can rotate relative to the chuck.

[0010] Optionally, the clutch driving member is an elastic telescopic electromagnet, which includes a fixed part and a telescopic rod that can be telescoped relative to the fixed part, the fixed part is fixedly arranged relative to the outer cylinder, the chuck is provided with an annular groove coaxial with the main shaft, the telescopic rod is slidably connected to the annular groove, and the chuck is pushed to move axially by the telescopic rod to achieve engagement or separation with the clamping ring.

[0011] Optionally, a connector is provided at one end of the telescopic rod away from the fixing portion, and a connecting groove is provided on the side wall of the annular groove on the chuck, and the connector is inserted into the connecting groove to limit the separation of the chuck and the telescopic rod.

[0012] Optionally, the fixing portion is fixed outside the outer tube, the outer tube is provided with a through hole, and the telescopic rod extends through the through hole to the inside of the outer tube to be connected with the chuck.

[0013] Optionally, a sealing ring surrounding the inner circumference of the through hole is provided on the outer tube, and the telescopic rod is in close contact with the inner circumference of the sealing ring.

[0014] Optionally, a mounting plate is provided on the housing of the motor, and the fixing part is fixed on the mounting plate.

[0015] Optionally, at least three elastic telescopic electromagnets are provided, and the three elastic telescopic electromagnets are evenly distributed circumferentially around the axis of the main shaft.

[0016] Optionally, a plurality of first clamping blocks are circumferentially spaced apart on the retaining ring, and a plurality of second clamping blocks are circumferentially spaced apart on the inner circumference of the clamping hole of the chuck, and the engagement of the chuck and the retaining ring is achieved by mutual engagement of the first clamping blocks and the second clamping blocks.

[0017] Optionally, the first clamping block has a first conical tip facing the side where the chuck is located, and the second clamping block has a second conical tip facing the side where the retaining ring is located, and the first conical tip and the second conical tip can guide the first clamping block and the second clamping block to engage with each other.

[0018] Optionally, a first baffle is provided on the inner wall of the outer cylinder, and a second baffle is provided on the chuck. When the chuck is separated from the clamping ring, the first baffle can block the second baffle to limit the rotation of the chuck.

[0019] The beneficial effects of the present application are as follows: the utility model provides a clutch device for a washing machine, which can be installed in the washing machine, including a main shaft, a retaining ring, a chuck, and a clutch driving member. The retaining ring is fixed on the main shaft, the chuck is used to install a cleaning device, and the clutch driving member is connected to the chuck to push the chuck to move axially. The clutch device of this scheme can realize the function of controlling the cleaning direction of the cleaning device according to the use requirements, so that the cleaning device can clean the outer cylinder and the inner cylinder. When it is necessary to clean the outer wall of the inner cylinder, the clutch driving member is used to drive the chuck to separate from the retaining ring, and the inner cylinder can rotate relative to the cleaning device, so that the cleaning device can clean the outer wall of the inner cylinder; when it is necessary to clean the inner wall of the outer cylinder, the clutch driving member is used to drive the chuck to engage with the retaining ring, and the motor can drive the cleaning device to rotate relative to the outer cylinder, so that the cleaning device can clean the inner wall of the outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present application is further described in detail below based on the drawings and embodiments.

[0021] Figure 1 This is a structural schematic diagram of a clutch device for a washing machine according to an embodiment of the present application from one perspective;

[0022] Figure 2 This is a schematic structural diagram of the clutch device for a washing machine according to an embodiment of the present application from another perspective;

[0023] Figure 3 An exploded schematic diagram of a clutch device for a washing machine according to an embodiment of the present application from one perspective;

[0024] Figure 4 An exploded schematic diagram of the clutch device for a washing machine according to an embodiment of the present application from another perspective;

[0025] Figure 5 This is a structural schematic diagram of a washing machine clutch device according to an embodiment of the present application installed in the washing machine;

[0026] Figure 6 for Figure 5 An exploded schematic diagram of the structure shown in FIG.

[0027] Figure 7 for Figure 5 An exploded schematic diagram of another perspective of the structure shown;

[0028] Figure 8 for Figure 5 a cross-sectional view of the structure shown;

[0029] Fig. 9 for Figure 5 Schematic diagram of the inner side view of the outer cylinder in FIG.

[0030] In the figure:

[0031] 1. Spindle; 2. Snap ring; 21. First clamping block; 3. Chuck; 31. Clamping hole; 32. Second clamping block; 33. Ring groove; 34. Second baffle; 4. Clutch drive member; 41. Fixed part; 42. Telescopic rod; 43. Connector; 5. Sealing ring; 6. Cleaner; 7. Motor; 71. Mounting plate; 8. Outer cylinder; 81. Through hole; 82. First baffle; 9. Inner cylinder. DETAILED DESCRIPTION

[0032] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0033] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The drum structure of the washing machine includes an outer drum and an inner drum structure. The outer drum is a fixed drum, and the inner drum is installed in the outer drum. The rotating shaft of the motor passes through the bottom of the outer drum and is connected to the inner drum. The motor drives the inner drum to rotate, so that the inner drum pushes the clothes to run and realize the washing function. There will be a certain gap between the inner drum and the outer drum. The inner wall of the outer drum and the outer wall of the inner drum are walls that the clothes cannot touch. After long-term use, dirt is easily accumulated on the inner wall of the outer drum and the outer wall of the inner drum to breed bacteria. Therefore, some washing machines are integrated with a self-cleaning system to realize the automatic cleaning function. However, the self-cleaning function of the existing washing machine can generally only clean the inner wall of the outer drum, and cannot clean the outer wall of the inner drum. For example, China's authorized patent CN219808127U discloses an outer drum cleaning system and a washing machine, which directly sets a convex rib structure with a water spray hole and a water storage cavity on the side wall of the inner drum, and introduces a water diversion pipe into the water storage cavity. When working, the convex rib structure can rotate with the inner drum, and the water spray hole sprays water toward the inner wall of the outer drum to realize the cleaning of the inner wall of the outer drum. The reason is that the cleaning structure in the prior art can only rotate with the inner drum, so it cannot clean the outer wall of the inner drum. In order to clean the outer wall of the inner drum, it is necessary to design a cleaning structure that can rotate relative to the inner drum, and when cleaning the outer drum, the cleaning device also needs to be able to rotate relative to the outer drum. Therefore, how to control the operating state of the cleaning structure according to the use requirements so that the cleaning structure can choose to clean the outer drum or the inner drum has become an urgent problem to be solved in the field of washing machines.

[0036] In order to solve the above technical problems, refer to Figure 1-9 The present embodiment provides a clutch device for a washing machine, which is used to be installed in the washing machine. The washing machine includes an outer drum 8, an inner drum 9 and a motor 7. The clutch device of the present embodiment includes a main shaft 1, a snap ring 2, a chuck 3 and a clutch driving member 4. The main shaft 1 is used to connect the inner drum 9 and the rotating shaft of the motor 7, so that the motor 7 can drive the inner drum 9 to rotate; the snap ring 2 is fixed on the main shaft 1 and is located between the outer drum 8 and the inner drum 9; the chuck 3 is located between the outer drum 8 and the inner drum 9 and is used to install a cleaning device 6. The center of the chuck 3 is provided with a clamping hole 31 that cooperates with the snap ring 2; the clutch driving member 4 is connected to the chuck 3, and is used to push the chuck 3 to move axially relative to the snap ring 2, so that the chuck 3 is engaged with or separated from the snap ring 2. When the chuck 3 is engaged with the snap ring 2, the main shaft 1 can drive the chuck 3 to rotate; when the chuck 3 is separated from the snap ring 2, the main shaft 1 can rotate relative to the chuck 3.

[0037] When the clutch device for a washing machine of this embodiment is in use, one end of the main shaft 1 is connected to the rotating shaft of the motor 7, and the other end passes through the outer drum 8 and then extends into the outer drum 8 to be connected to the inner drum 9, so that the motor 7 can drive the inner drum 9 to rotate through the rotating shaft; the chuck 3, the snap ring 2 and the cleaner 6 are all installed in the gap between the outer drum 8 and the inner drum 9, and the snap ring 2 is fixed on the main shaft 1, so that when the chuck 3 is engaged with the snap ring 2, the main shaft 1 can drive the chuck 3 to rotate through the snap ring 2, and then drive the cleaner 6 connected to the chuck 3 to rotate; when the chuck 3 is separated from the snap ring 2, the transmission connection between the chuck 3 and the main shaft 1 is lost, so the main shaft 1 can no longer drive the chuck 3 to rotate.

[0038] The cleaner 6 is installed on the chuck 3 and is located in the gap between the outer cylinder 8 and the inner cylinder 9. It can be used to clean the inner wall of the outer cylinder 8 and the outer wall of the inner cylinder 9. When specifically set, the cleaner 6 can be a cleaning brush, or a nozzle that can spray water onto the wall of the outer cylinder 8 and the inner cylinder 9. When a nozzle structure is adopted, it is necessary to connect a water supply pipeline to it, and the water supply pipeline can be set in combination with the existing technology.

[0039] In summary, the clutch device for washing machines according to the present embodiment can be installed in the washing machine, and includes structures such as the main shaft 1, the snap ring 2, the chuck 3 and the clutch drive 4. The snap ring 2 is fixed on the main shaft 1, the chuck 3 is used to install the cleaning device 6, and the clutch drive 4 is connected to the chuck 3 to push the chuck 3 to move axially. The clutch device of the present scheme can realize the function of controlling the cleaning direction of the cleaning device 6 according to the use requirements, so that the cleaning device 6 can clean the outer cylinder 8 and the inner cylinder 9. When it is necessary to clean the outer wall of the inner cylinder 9, the clutch drive 4 is used to drive the chuck 3 to separate from the snap ring 2, and the inner cylinder 9 can rotate relative to the cleaning device 6, so that the cleaning device 6 can clean the outer wall of the inner cylinder 9; when it is necessary to clean the inner wall of the outer cylinder 8, the clutch drive 4 is used to drive the chuck 3 to engage with the snap ring 2, and the motor 7 can drive the cleaning device 6 to rotate relative to the outer cylinder 8, so that the cleaning device 6 can clean the inner wall of the outer cylinder 8.

[0040] In one embodiment, referring to Figure 3-4 The clutch driving member 4 is an elastic telescopic electromagnet, which includes a fixed portion 41 and a telescopic rod 42 that can be telescoped relative to the fixed portion 41. The fixed portion 41 is fixedly arranged relative to the outer cylinder 8. The chuck 3 is provided with an annular groove 33 coaxial with the main shaft 1. The telescopic rod 42 is slidably connected to the annular groove 33. The telescopic rod 42 is telescoped to push the chuck 3 to move axially to achieve engagement or separation with the clamping ring 2.

[0041] Among them, the elastic telescopic electromagnet provides telescopic power through the spring and the electromagnet. When the electromagnet is powered on, it generates magnetic force to attract the telescopic rod 42 and drive the telescopic rod 42 to retract; when the electromagnet is powered off, the telescopic rod 42 is automatically ejected under the elastic force of the spring, so that the telescopic rod 42 is extended. Therefore, the use of the elastic telescopic electromagnet can achieve the axial movement of the chuck 3. An annular groove 33 is provided on the chuck 3 and is slidably connected to the telescopic rod 42, so that the telescopic rod 42 can drive the chuck 3 to move. Importantly, when the chuck 3 is engaged with the clamping ring 2, the telescopic rod 42 will not hinder the rotation of the chuck 3. Compared with other complex mechanical clutch devices, the structure of the elastic telescopic electromagnet is simpler, reducing the number of components and failure points.

[0042] In one embodiment, a connector 43 is provided at one end of the telescopic rod 42 away from the fixing portion 41 , and a connecting groove is provided on the side wall of the annular groove 33 of the chuck 3 , and the connector 43 is inserted into the connecting groove to limit the separation of the chuck 3 and the telescopic rod 42 .

[0043] A connector 43 is provided at one end of the telescopic rod 42 away from the fixed portion 41, and a connecting groove is provided on the side wall of the annular groove 33 of the chuck 3, thereby ensuring a stable connection between the telescopic rod 42 and the chuck 3 and avoiding the problem of accidental separation due to vibration or external force during the cleaning process.

[0044] In one embodiment, the fixing portion 41 is fixed outside the outer tube 8 , and a through hole 81 is provided on the outer tube 8 . The telescopic rod 42 extends through the through hole 81 to the inside of the outer tube 8 to be connected with the chuck 3 .

[0045] Placing the fixing part 41 outside the outer drum 8 and connecting the telescopic rod 42 and the chuck 3 through the through hole 81 makes the structure of the entire clutch device more compact, which helps to save space inside the washing machine and makes the layout of other components more reasonable. On the other hand, when the washing machine is working, water will accumulate inside the outer drum 8. Placing the fixing part 41 outside the outer drum 8 can prevent it from being soaked in water, ensuring that it will not be affected by the water and detergent inside the washing machine, thereby extending its service life. At the same time, this layout also facilitates the maintenance and replacement of the fixing part 41.

[0046] In one embodiment, a sealing ring 5 surrounding the inner circumference of the through hole 81 is disposed on the outer tube 8 , and the telescopic rod 42 is in close contact with the inner circumference of the sealing ring 5 .

[0047] Based on the setting of the sealing ring 5, it is possible to prevent the water, detergent and other liquids or impurities inside the washing machine from penetrating through the through hole 81 to the outside of the outer drum 8 to cause damage to the fixing part 41 and the electromagnet and other components. The sealing ring 5 is usually made of elastic material, such as rubber or silicone, and it can fit tightly on the inner periphery of the through hole 81 and the outer surface of the telescopic rod 42 to form an effective sealing barrier. This sealing performance can prevent the water, detergent and other liquids or impurities inside the washing machine from leaking out through the through hole 81. In addition, the sealing ring 5 also has a certain buffering and shock absorbing effect. During the operation of the washing machine, due to the effects of vibration and impact force, the telescopic rod 42 may collide or rub with the edge of the through hole 81. The presence of the sealing ring 5 can reduce the damage to the telescopic rod 42 and the through hole 81 caused by such collision and friction, thereby extending the service life of the clutch device.

[0048] In one embodiment, a mounting plate 71 is disposed on the housing of the motor 7 , and the fixing portion 41 is fixed on the mounting plate 71 .

[0049] The mounting plate 71 provides a stable support for the fixing portion 41 , which helps to reduce displacement and looseness caused by vibration and impact, thereby improving the stability of the clutch drive device.

[0050] In one embodiment, at least three elastic telescopic electromagnets are provided, and the three elastic telescopic electromagnets are evenly distributed circumferentially around the axis of the main shaft 1 .

[0051] The three elastic telescopic electromagnets are evenly distributed around the main shaft 1, which helps to achieve force balance. During the clutch process, each electromagnet will apply a certain force to the chuck 3 through its telescopic rod 42, so that the chuck 3 can move stably.

[0052] In one embodiment, a plurality of first clamping blocks 21 are circumferentially spaced apart on the retaining ring 2, and a plurality of second clamping blocks 32 are circumferentially spaced apart on the inner circumference of the clamping hole 31 of the chuck 3, and the engagement of the chuck 3 and the retaining ring 2 is achieved by mutual engagement of the first clamping blocks 21 and the second clamping blocks 32.

[0053] Specifically, a first slot is formed between the first blocks 21 disposed at intervals, and a second slot is formed between the second blocks 32 disposed at intervals. When engaged, the first block 21 is inserted into the second slot, and the second block 32 is inserted into the first slot, so that the clamping ring 2 can push the chuck 3 to rotate synchronously. The precise matching of the slot and the block ensures a high degree of synchronization between the clamping ring 2 and the chuck 3 during the rotation process, and reduces the risk of failure caused by slippage or misalignment.

[0054] In one embodiment, the first clamping block 21 has a first conical tip portion facing the side where the chuck 3 is located, and the second clamping block 32 has a second conical tip portion facing the side where the retaining ring 2 is located, and the first conical tip portion and the second conical tip portion can guide the first clamping block 21 and the second clamping block 32 to engage with each other.

[0055] The guiding effect of the first cone tip and the second cone tip enables the first clamping block 21 and the second clamping block 32 to find each other more quickly and engage smoothly, thereby improving the efficiency of the engagement. In the specific application process of this embodiment, when the clutch drive 4 drives the chuck 3 to move and engage with the snap ring 2, the motor 7 can be controlled to rotate slowly. Even if the tips of the first clamping block 21 and the second clamping block 32 abut against each other, the snap ring 2 can be driven by the motor 7 to rotate slowly, thereby enabling the tips of the first clamping block 21 and the second clamping block 32 to be smoothly misaligned, thereby guiding the engagement of the first clamping block 21 and the second clamping block 32.

[0056] In one embodiment, a first baffle 82 is provided on the inner wall of the outer cylinder 8 , and a second baffle 34 is provided on the chuck 3 . When the chuck 3 is separated from the retaining ring 2 , the first baffle 82 can block the second baffle 34 to limit the rotation of the chuck 3 .

[0057] The first baffle 82 on the inner wall of the outer cylinder 8 and the second baffle 34 on the chuck 3 together constitute a mechanism for limiting the rotation of the chuck 3, preventing the chuck 3 from rotating freely without control, thereby ensuring that after the chuck 3 is separated, the inner cylinder 9 can rotate relative to the cleaner 6, so that the cleaner 6 can clean the outer wall of the inner cylinder 9.

[0058] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0059] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0060] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0061] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A clutch device for a washing machine, used for being installed in a washing machine, wherein the washing machine comprises an outer drum (8), an inner drum (9) and a motor (7), characterized in that: include: A main shaft (1) is used to connect the inner cylinder (9) and the rotating shaft of the motor (7), so that the motor (7) can drive the inner cylinder (9) to rotate; A clamping ring (2) is fixed on the main shaft (1) and is located between the outer cylinder (8) and the inner cylinder (9); A chuck (3) is located between the outer cylinder (8) and the inner cylinder (9) and is used to install the cleaning device (6). A clamping hole (31) that cooperates with the clamping ring (2) is provided at the center of the chuck (3); A clutch drive member (4) is connected to the chuck (3) and is used to push the chuck (3) to move axially relative to the snap ring (2) so that the chuck (3) and the snap ring (2) are engaged or separated. When the chuck (3) and the snap ring (2) are engaged, the main shaft (1) can drive the chuck (3) to rotate; when the chuck (3) and the snap ring (2) are separated, the main shaft (1) can rotate relative to the chuck (3).

2. The clutch device for a washing machine according to claim 1, characterized in that: The clutch drive member (4) is an elastic telescopic electromagnet, comprising a fixed portion (41) and a telescopic rod (42) that can be telescoped relative to the fixed portion (41); the fixed portion (41) and the outer cylinder (8) are fixedly arranged relative to each other; the chuck (3) is provided with an annular groove (33) coaxial with the main shaft (1); the telescopic rod (42) is slidably connected to the annular groove (33); and the chuck (3) is pushed to move axially by the telescopic movement of the telescopic rod (42) to achieve engagement or separation with the clamping ring (2).

3. The clutch device for a washing machine according to claim 2, characterized in that: A connector (43) is provided at one end of the telescopic rod (42) away from the fixing portion (41), and a connecting groove is provided on the side wall of the annular groove (33) on the chuck (3), and the connector (43) is inserted into the connecting groove to limit the separation of the chuck (3) and the telescopic rod (42).

4. The clutch device for a washing machine according to claim 2, characterized in that: The fixing portion (41) is fixed outside the outer cylinder (8); a through hole (81) is provided on the outer cylinder (8); and the telescopic rod (42) extends through the through hole (81) to the inside of the outer cylinder (8) to be connected to the chuck (3).

5. The clutch device for a washing machine according to claim 4, characterized in that: The outer cylinder (8) is provided with a sealing ring (5) surrounding the inner circumference of the through hole (81), and the telescopic rod (42) is in close contact with the inner circumference of the sealing ring (5).

6. The clutch device for a washing machine according to claim 4, characterized in that: A mounting plate (71) is provided on the casing of the motor (7), and the fixing portion (41) is fixed on the mounting plate (71).

7. The clutch device for a washing machine according to claim 2, characterized in that: At least three elastic telescopic electromagnets are provided, and the three elastic telescopic electromagnets are evenly distributed in the circumferential direction around the axis of the main shaft (1).

8. The clutch device for a washing machine according to claim 2, characterized in that: The clamping ring (2) has a plurality of first clamping blocks (21) distributed circumferentially at intervals, and the chuck (3) has a plurality of second clamping blocks (32) distributed circumferentially at intervals on the inner circumference of the clamping hole (31). The chuck (3) and the clamping ring (2) are joined together by the mutual engagement of the first clamping blocks (21) and the second clamping blocks (32).

9. The clutch device for a washing machine according to claim 8, characterized in that: The first clamping block (21) has a first conical tip facing the side where the chuck (3) is located, and the second clamping block (32) has a second conical tip facing the side where the clamping ring (2) is located, and the first conical tip and the second conical tip can guide the first clamping block (21) and the second clamping block (32) to engage with each other.

10. The clutch device for a washing machine according to claim 1, characterized in that: The inner wall of the outer cylinder (8) is provided with a first baffle (82), and the chuck (3) is provided with a second baffle (34). When the chuck (3) is separated from the clamping ring (2), the first baffle (82) can block the second baffle (34) to limit the rotation of the chuck (3).

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