A washing machine

Abstract

The present invention discloses a washing machine comprising an inner tub, an outer tub, a pulsator, and a washing shaft connected to the pulsator. The washing machine further comprises a clutch assembly having two clutch states for connecting and disconnecting the inner tub and the pulsator for integral rotation; and a drive module for driving the inner tub up and down, switching the clutch state of the clutch assembly, and causing the inner tub and the pulsator to rotate integrally or independently. The present invention controls the washing machine to perform dehydration and washing by driving the inner tub up and down and switching the clutch state of the clutch assembly through the drive module. This allows the inner tub and the pulsator to rotate integrally or independently, thereby controlling the washing machine to perform dehydration and washing. The washing machine has a simple structure and occupies little space, thus saving internal space and reducing the size of the washing machine. While the size of the washing machine remains unchanged, the washing space of the washing machine can be increased, thereby achieving increased washing capacity.

Description

Technical Field

[0001] The present invention belongs to the field of washing machines, and in particular relates to a washing machine. Background Art

[0002] In the prior art, the clutch device of the washing machine is installed below the inner barrel of the washing machine. The existing clutch device has a complex structure and occupies a large amount of space below the washing machine, causing the height of the washing machine to increase, making the washing machine larger and occupying more home space.

[0003] Chinese patent application number 201310355976.6 discloses a high-efficiency variable frequency motor deceleration clutch device and a washing machine. The deceleration clutch device comprises a clutch housing, an outer rotor motor consisting of a rotor and a stator, and an input shaft fixedly connected to the rotor and mounted on the housing. An input sleeve is disposed on the outer side of the input shaft and is rotatable about its axis. A clutch sleeve is mounted on the input sleeve and slides up and down. The clutch sleeve is connected to the traction motor via a control mechanism. When the clutch sleeve is in a first position, the input sleeve engages with the housing via the clutch sleeve. When the clutch sleeve is in a second position, the input sleeve engages with the rotor via the clutch sleeve. A control mechanism consisting of a connecting arm, a shift fork, and a clutch spring transmits the controllable traction force of the traction motor to the clutch sleeve, enabling the clutch sleeve to slide up and down. However, this solution requires the installation of a lower housing and control mechanism at the bottom of the inner tub. This washing machine clutch device is complex and occupies a significant amount of space below the inner tub.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a washing machine with a simple structure that can realize the dehydration / washing functions of the washing machine. By driving the inner barrel to move up and down, the inner barrel and the impeller are rotated / disengaged as a whole. It has a simple structure, occupies a small space, and can save the lower space of the washing machine.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: to provide a washing machine, including an inner tub, an outer tub, a pulsator and a washing shaft connected to the pulsator, and also including:

[0007] A clutch assembly having two clutch states for connecting / disconnecting the inner tub and the pulsator for integral rotation;

[0008] The driving module is used to drive the inner tub to move up and down, convert the clutch state of the clutch assembly, and make the inner tub and the pulsator rotate together or separately.

[0009] The present invention drives the inner tub to move up and down through a driving module, switches the clutch state of the clutch assembly, and causes the inner tub and the pulsator to rotate integrally or separately, thereby controlling the washing machine to perform dehydration / washing. The present invention has a simple structure and occupies a small space, thus saving the internal space of the washing machine and reducing the size of the washing machine. Under the condition that the size of the washing machine remains unchanged, the washing space of the washing machine can be increased, thereby realizing an increased washing capacity of the washing machine.

[0010] The clutch assembly includes a first connecting member, which is arranged on the washing shaft; and a second connecting member, which is arranged on the dehydration shaft and is used to connect to / disconnect from the first connecting member.

[0011] Furthermore, the washing machine further comprises a dehydration shaft sleeved on the washing shaft, one end of the dehydration shaft being connected to the inner tub, the washing shaft being provided with an engaging portion protruding from an outer peripheral wall thereof, the first connecting member being a spline provided on the outer peripheral wall of the engaging portion, and the second connecting member being a spline provided on the inner peripheral wall of the dehydration shaft;

[0012] Preferably, the meshing portion is a meshing ring.

[0013] The dehydration shaft of the present invention is connected to the inner barrel, and the driving module drives the inner barrel to move up and down, thereby driving the dehydration shaft to move up and down, so that the washing shaft and the dehydration shaft are engaged or disengaged, and the washing shaft and the dehydration shaft can be rotated as a whole or not, thereby controlling the washing machine to dehydrate or wash. The clutch assembly has a simple structure and occupies a small space, which saves the internal space of the washing machine and reduces the size of the washing machine. Under the condition that the volume of the washing machine remains unchanged, the washing space of the washing machine can be increased, thereby realizing the washing capacity increase of the washing machine.

[0014] Furthermore, the spline on the outer peripheral wall of the meshing portion has a guiding slope at one end close to the dehydration shaft, and / or the spline on the inner peripheral wall of the dehydration shaft has a guiding slope at one end close to the meshing portion, for guiding the meshing portion into the dehydration shaft;

[0015] Preferably, the engaging portion is integrally connected or assembled to the washing shaft.

[0016] Furthermore, the washing shaft includes a first shaft segment, a second shaft segment and a third shaft segment connected in sequence from top to bottom, the diameter of the second shaft segment is larger than the diameters of the first shaft segment and the third shaft segment, and the meshing portion is arranged at the lower end of the second shaft segment.

[0017] Furthermore, the dehydration shaft includes a coaxially arranged stepped hole, the stepped hole includes a first hole segment, a second hole segment, and a third hole segment arranged from top to bottom, and the aperture of the second hole segment is smaller than the apertures of the first hole segment and the third hole segment;

[0018] The upper end of the second shaft section of the washing shaft is provided with a blocking protrusion protruding from the outer peripheral wall thereof, the blocking protrusion is located in the first hole section, and the diameter of the washing shaft at the blocking protrusion is larger than the hole diameter of the second hole section;

[0019] Preferably, the meshing portion is interference connected to the washing shaft.

[0020] Furthermore, the second connecting member is arranged on the inner peripheral wall of the third hole section.

[0021] Furthermore, the distance between the lower end of the blocking protrusion and the upper end of the engaging portion is greater than the sum of the axial lengths of the second hole segment and the third hole segment.

[0022] Furthermore, the driving module is installed on the outside of the bottom of the outer tub, and the driving module includes a telescopic rod and a driving component, one end of the telescopic rod is connected to the driving component on the outside of the bottom of the outer tub, and the other end is telescopically arranged in the outer tub;

[0023] Preferably, the driving module is arranged at a position where the outer barrel is opposite to the bottom of the inner barrel.

[0024] Furthermore, the driving module has two working states:

[0025] In the first working state, the driving module drives the inner tub to move upward, causing the inner tub and the pulsator to rotate respectively;

[0026] The second working state is that the driving module drives the inner tub to move downward, so that the inner tub and the pulsator rotate integrally.

[0027] The drive module described in the present invention does not need to be set at the bottom of the inner barrel of the washing machine, but can be set on the outside of the outer barrel of the washing machine, saving the internal space between the inner and outer barrels of the washing machine, making the volume of the washing machine smaller, and increasing the washing space of the inner barrel, thereby realizing the washing capacity expansion of the washing machine.

[0028] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0029] (1) The present invention drives the inner tub to move up and down through a driving module, switches the clutch state of the clutch assembly, and makes the inner tub and the impeller rotate together or separately, thereby controlling the washing machine to perform dehydration or washing. The present invention has a simple structure and occupies a small space, thus saving the internal space of the washing machine and reducing the size of the washing machine. Under the condition that the size of the washing machine remains unchanged, the washing space of the washing machine can be increased, thereby realizing the washing capacity expansion of the washing machine.

[0030] (2) The driving module described in the present invention does not need to be set at the bottom of the inner barrel of the washing machine, but can be set on the outside of the outer barrel of the washing machine, which saves the internal space between the inner barrel and the outer barrel of the washing machine, makes the volume of the washing machine smaller, and can increase the washing space of the inner barrel, thereby realizing the washing capacity expansion of the washing machine.

[0031] (3) The washing machine of the present invention does not have a deceleration device. By arranging a variable frequency motor on the outside of the outer barrel of the washing machine, the variable frequency motor controls and adjusts the rotation speed of the impeller and / or the inner barrel to wash. This simplifies the internal structure of the washing machine, saves space inside the washing machine, reduces the height of the washing machine, and increases the available space of the washing machine. This is conducive to increasing the capacity of the washing machine at the same volume. The washing machine of the present invention has a simple structure, is easy to install, and reduces costs.

[0032] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0034] Figure 1 is a schematic diagram of a washing machine of the present invention;

[0035] Figure 2 This invention Figure 1 sectional view of

[0036] Figure 3 A schematic diagram of the installation structure of the clutch assembly of the present invention;

[0037] Figure 4 This invention Figure 3 Cross-sectional view when detached;

[0038] Figure 5 This invention Figure 3 Cross-sectional view when meshing.

[0039] In the figure: 1. Washing shaft; 11. Blocking cam; 12. Engaging portion; 13. First shaft section; 14. Second shaft section; 15. Third shaft section; 2. Dehydration shaft; 21. Flange; 211. Connecting hole; 22. First hole section; 23. Second hole section; 24. Third hole section; 3. Driving module; 31. Telescopic rod; 32. Driving component; 4. Sealing structure; 5. Washing machine; 51. Inner tub; 52. Outer tub; 53. Impeller; 54. Variable frequency motor.

[0040] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, 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. Therefore, they cannot be understood as limiting the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0044] like Figures 1 to 5 As shown, the washing machine 5 described in the present invention includes an inner barrel 51, an outer barrel 52, a pulsator 53 and a washing shaft 1 connected to the pulsator 53, and also includes a clutch assembly, which has two clutch states of connecting / separating the inner barrel 51 and the pulsator 53 to rotate together; a driving module 3 is used to drive the inner barrel 51 to move up and down, convert the clutch state of the clutch assembly, and make the inner barrel 51 and the pulsator 53 rotate together / independently.

[0045] The present invention drives the inner tub 51 to move up and down through the driving module 3, switches the clutch state of the clutch assembly, and makes the inner tub 51 and the pulsator 53 rotate together / independently, thereby controlling the washing machine 5 to perform dehydration / washing. The structure is simple, and the space occupied is small, which saves the internal space of the washing machine and reduces the size of the washing machine. Under the condition that the volume of the washing machine remains unchanged, the washing space of the washing machine can be increased, thereby realizing the washing capacity expansion of the washing machine.

[0046] The present invention can be applied to a pulsator washing machine. The washing shaft 1 is arranged through the inner tub 51 and the outer tub 52.

[0047] The clutch assembly includes a first connecting member, which is arranged on the washing shaft 1; and a second connecting member, which is arranged on the dehydration shaft 2 and is used to connect to / disconnect from the first connecting member.

[0048] A preferred solution is that the washing machine 5 also includes a dehydration shaft 2 arranged on the washing shaft 1, one end of the dehydration shaft 2 is connected to the inner barrel 51, and the washing shaft 1 is provided with an engaging portion 12 protruding from its outer peripheral wall, the first connecting member is a spline arranged on the outer peripheral wall of the engaging portion 12, and the second connecting member is a spline arranged on the inner peripheral wall of the other end of the dehydration shaft 2.

[0049] Preferably, the engagement portion 12 is a engagement ring, and the engagement portion 12 rotates integrally with the washing shaft 1 .

[0050] Specifically, the washing machine 5 drives the inner barrel 51 to move up and down through the driving module 3, driving the dehydration shaft 2 to move up and down, so that the washing shaft 1 engages or disengages with the dehydration shaft 2 through the engaging portion 12. When engaged, the dehydration shaft 2 rotates integrally with the washing shaft 1; when disengaged, when the washing shaft 1 rotates, the dehydration shaft 2 does not rotate integrally with the washing shaft 1, thereby realizing the dehydration / washing function of the washing machine 5. It has a simple structure, is easy to operate, has a small size, and occupies little space, saving the internal space between the inner barrel and the outer barrel of the washing machine, making the volume of the washing machine smaller, and can increase the washing space of the inner barrel, thereby realizing the washing capacity increase of the washing machine.

[0051] The spline on the outer peripheral wall of the meshing part 12 has a guiding slope at one end close to the dehydration shaft 2, and / or the spline on the inner peripheral wall of the dehydration shaft 2 has a guiding slope at one end close to the meshing part 12, for guiding the meshing part 12 into the dehydration shaft 2.

[0052] Preferably, the engaging portion 12 is integrally connected or assembled to the washing shaft 1 .

[0053] The washing shaft 1 includes a first shaft segment 13, a second shaft segment 14 and a third shaft segment 15 connected in sequence from top to bottom. The diameter of the second shaft segment 14 is larger than the diameters of the first shaft segment 13 and the third shaft segment 15. The meshing portion 12 is arranged at the lower end of the second shaft segment 14.

[0054] Furthermore, a flange 21 is provided at the upper end of the dehydration shaft 2, and the flange 21 is connected to the inner barrel 51. Preferably, a connecting hole 211 is provided on the flange 21 along the axial direction.

[0055] Specifically, the dehydration shaft 2 is connected to the outer side of the bottom of the inner barrel 51, and the flange 21 of the dehydration shaft 2 is connected to the outer side of the bottom of the inner barrel 51. The outer side of the bottom of the inner barrel 51 is also provided with a hole, and the connecting hole 211 of the flange 21 and the hole of the inner barrel 51 are connected by bolts or screws.

[0056] The washing machine 5 further includes a pulsator 53 and a variable frequency motor 54. The variable frequency motor 54 is disposed on the outer tub 52. One end of the washing shaft 1 is connected to the pulsator 53, and the other end is in transmission connection with the variable frequency motor 54. The variable frequency motor 54 is disposed on the outside of the bottom of the outer tub 52. The washing shaft 1 is inserted into the outer tub 52 and in transmission connection with the variable frequency motor 54.

[0057] The first shaft section 13 of the washing shaft 1 is connected to the pulsator 53 , and the third shaft section 15 of the washing shaft 1 is connected to the variable frequency motor 54 .

[0058] The washing machine 5 of the present invention is not provided with a deceleration device. By arranging a frequency conversion motor 54 outside the outer barrel 52 of the washing machine 5, the frequency conversion motor 54 controls and adjusts the rotation speed of the impeller 53 and / or the inner barrel 51 to perform washing, thereby simplifying the internal structure of the washing machine, saving space inside the washing machine, reducing the height of the washing machine, and facilitating capacity expansion of the washing machine. The washing machine of the present invention has a simple structure, is easy to install, and reduces costs.

[0059] Furthermore, the dehydration shaft 2 includes a coaxially arranged stepped hole, which includes a first hole segment 22, a second hole segment 23, and a third hole segment 24 arranged from top to bottom. The aperture of the second hole segment 23 is smaller than the apertures of the first hole segment 22 and the third hole segment 24. The flange 21 is provided on the first hole segment 22.

[0060] One end of the dehydration shaft 2 having the first hole section 22 is connected to the inner barrel 51, and a spline matching the engagement portion 12 is provided in the third hole section 24. When the dehydration shaft 2 moves up and down under the action of an external force, the third hole section 24 engages or disengages with the spline of the engagement portion 12.

[0061] The upper end of the second shaft section 14 is provided with a blocking protrusion 11 protruding from its outer peripheral wall. The blocking protrusion 11 is located in the first hole section 22. The diameter of the washing shaft 1 at the blocking protrusion is larger than the aperture of the second hole section 23, which is used to limit the upward movement of the dehydration shaft 2.

[0062] The first hole section 22, the second hole section 23, and the third hole section 24 are straight through holes. The blocking protrusion 11 is a circular blocking protrusion.

[0063] A sealing structure 4 is provided at the connection between the upper end of the dehydration shaft 2 and the washing shaft 1 , which can cooperate with the inner barrel 51 to prevent water in the barrel from flowing out of the inner barrel 51 .

[0064] The sealing structure 4 is sleeved on the washing shaft 1 and installed in the first hole section 22 .

[0065] The engaging portion 12 can be installed in the third hole section 24 at the lower end of the dehydration shaft 2, so that the dehydration shaft 2 and the washing shaft 1 can rotate integrally.

[0066] When the engaging portion 12 is disengaged from the third hole section 24 at the lower end of the dehydration shaft 2 , the dehydration shaft 2 does not rotate integrally with the washing shaft 1 , and the washing shaft 1 only drives the pulsator 53 to rotate.

[0067] Furthermore, the meshing portion 12 is interference-connected with the washing shaft 1. When the washing shaft 1 and the dehydration shaft 2 are assembled, the blocking protrusion 11 of the washing shaft 1 is installed in the first hole section 22, and the meshing portion 12 is inserted upward from the bottom of the washing shaft 1 and is interference-connected with the lower end of the second shaft section 14, which can facilitate the assembly of the washing shaft 1 and the dehydration shaft 2.

[0068] Furthermore, a spline that matches and engages with the engaging portion 12 is provided in the third hole segment 24 , and the engaging portion 12 can be meshed with the third hole segment 24 .

[0069] The distance between the lower end of the blocking protrusion 11 and the upper end of the meshing portion 12 is greater than the sum of the axial lengths of the second hole section 23 and the third hole section 24 , leaving space for the dehydration shaft 2 to move up and down and engage and disengage with the meshing portion 12 .

[0070] like Figure 4 As shown, the inner barrel 51 of the washing machine 5 is in a state of being lifted up by the driving module 3. When the connection between the first hole segment 22 and the second hole segment 23 abuts against the blocking protrusion 11, the engaging portion 12 has disengaged from the dehydration shaft 2, and the washing shaft 1 and the dehydration shaft 2 rotate separately, and washing can be carried out.

[0071] like Figure 5 As shown, the inner barrel 51 of the washing machine 5 moves downward, the connection between the first hole segment 22 and the second hole segment 23 moves downward, away from the blocking protrusion 11, the third hole segment 24 is spline-engaged with the engaging portion 12, and the washing shaft 1 and the dehydration shaft 2 rotate integrally to perform dehydration.

[0072] The driving module 3 is installed on the outside of the bottom of the outer barrel 52. The driving module 3 includes a telescopic rod 31 and a driving component 32 (see Figure 2), one end of the telescopic rod 31 is connected to the driving component 32 at the outside of the bottom of the outer barrel 52, and the other end is telescopically arranged in the outer barrel 52.

[0073] The driving module 3 described in the present invention does not need to be set at the bottom of the inner barrel 51 of the washing machine 5, but can be set on the outside of the outer barrel 52 of the washing machine 5, saving the internal space between the inner barrel 51 and the outer barrel 52 of the washing machine, making the volume of the washing machine smaller, and increasing the washing space of the inner barrel, thereby realizing the washing capacity expansion of the washing machine.

[0074] Preferably, the driving module 3 is disposed at a position where the outer tub 52 is opposite to the bottom of the inner tub 51, and the telescopic rod 31 is capable of moving upward to abut against the outer side of the bottom of the inner tub 51. The driving module 3 includes two sets of connected telescopic rods 31 and driving components 32, and the driving module 3 is symmetrically disposed about the center of the outer tub 52.

[0075] The driving module 3 has two working states:

[0076] In the first working state, the driving module 3 drives the inner barrel 51 to move upward, so that the inner barrel 51 and the impeller 53 rotate separately; in the second working state, the driving module 3 drives the inner barrel 51 to move downward, so that the inner barrel 51 and the impeller 53 rotate integrally.

[0077] Specifically, when the driving component 32 drives the telescopic rod 31 to move upward, the telescopic rod 31 pushes the inner barrel 51 upward, causing the dehydration shaft 2 to move upward and disengage from the engagement of the engagement portion 12, so that the washing shaft 1 and the dehydration shaft 2 rotate non-integrally, and the variable frequency motor 54 drives the washing shaft 1 to rotate for washing.

[0078] When the driving component 32 drives the telescopic rod 31 to move downward, the telescopic rod 31 causes the inner barrel 51 to move slowly downward, causing the dehydration shaft 2 to move downward and engage with the engaging portion 12 spline, causing the washing shaft 1 and the dehydration shaft 2 to rotate as a whole, and the variable frequency motor 54 drives the washing shaft 1 and the dehydration shaft 2 to rotate as a whole for dehydration.

[0079] Another preferred solution (not shown) differs from the above solution in that the washing machine does not have a spin shaft. Instead, the washing shaft is provided with an engaging portion protruding from its outer circumferential wall. The clutch assembly comprises a first connecting member and a second connecting member. The first connecting member comprises clutch teeth disposed obliquely on the end surface of the engaging portion facing the inner tub. The bottom of the inner tub is provided with a mounting hole for mounting the washing shaft. The second connecting member comprises clutch teeth disposed obliquely on the outer circumference of the inner tub outside the shaft mounting hole.

[0080] The driving module drives the inner tub to move up and down, so that the clutch teeth on the bottom of the inner tub are engaged with or disengaged from the clutch teeth on the engaging portion.

[0081] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above-mentioned embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A washing machine comprising an inner tub, an outer tub, a pulsator, and a washing shaft connected to the pulsator, characterized in that: Also includes, A dehydration shaft sleeved on the washing shaft, one end of the dehydration shaft being connected to the inner tub; A clutch assembly having two clutch states for connecting or separating the inner tub and the pulsator for integral rotation; the clutch assembly comprises a first connecting member disposed on the washing shaft; a second connecting member, integrally rotatably connected to the inner barrel, and configured to engage with or disengage from the first connecting member; The driving module is used to drive the inner barrel to move up and down, convert the clutch state of the clutch assembly, and make the inner barrel and the impeller rotate together or separately; the driving module is installed on the outside of the bottom of the outer barrel, and the driving module includes a telescopic rod and a driving component. One end of the telescopic rod is connected to the driving component on the outside of the bottom of the outer barrel, and the other end is telescopically arranged in the outer barrel.

2. A washing machine according to claim 1, characterized in that: The washing shaft is provided with an engaging portion protruding from its outer peripheral wall; The first connecting member is a spline provided on the outer peripheral wall of the meshing portion, and the second connecting member is a spline provided on the inner peripheral wall of the dehydration shaft.

3. A washing machine according to claim 2, characterized in that: The meshing portion is a meshing ring.

4. A washing machine according to claim 3, characterized in that: The spline on the outer peripheral wall of the meshing part has a guiding slope at one end close to the dehydration shaft, and / or the spline on the inner peripheral wall of the dehydration shaft has a guiding slope at one end close to the meshing part, for guiding the meshing part into the dehydration shaft.

5. A washing machine according to claim 4, characterized in that: The engaging portion is integrally connected or assembled with the washing shaft.

6. A washing machine according to any one of claims 2 to 5, characterized in that: The washing shaft includes a first shaft segment, a second shaft segment and a third shaft segment connected in sequence from top to bottom. The diameter of the second shaft segment is larger than the diameters of the first shaft segment and the third shaft segment. The engaging portion is arranged at the lower end of the second shaft segment.

7. The washing machine according to claim 6, characterized in that: The dehydration shaft includes a coaxially arranged stepped hole, the stepped hole includes a first hole segment, a second hole segment, and a third hole segment arranged from top to bottom, and the aperture of the second hole segment is smaller than the apertures of the first hole segment and the third hole segment; The upper end of the second shaft section of the washing shaft is provided with a blocking protrusion protruding from its outer peripheral wall. The blocking protrusion is located in the first hole section. The diameter of the washing shaft at the blocking protrusion is larger than the aperture of the second hole section.

8. The washing machine according to claim 7, characterized in that: The meshing portion is interference-connected with the washing shaft.

9. The washing machine according to claim 7, characterized in that: The second connecting member is arranged on the inner peripheral wall of the third hole section.

10. The washing machine according to claim 7, characterized in that: The distance between the lower end of the blocking protrusion and the upper end of the engaging portion is greater than the sum of the axial lengths of the second hole segment and the third hole segment.

11. A washing machine according to any one of claims 1 to 5, characterized in that: The driving module is arranged at a position where the outer tub is opposite to the bottom of the inner tub.

12. A washing machine according to any one of claims 1 to 5, characterized in that: The driving module has two working states: In the first working state, the driving module drives the inner tub to move upward, causing the inner tub and the pulsator to rotate respectively; The second working state is that the driving module drives the inner tub to move downward, so that the inner tub and the pulsator rotate integrally.

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