CN112080893B

CN112080893B - Washing machine and method for disassembling pulsator assembly of washing machine

Info

Publication number: CN112080893B
Application number: CN201910507560.9A
Authority: CN
Inventors: 许升; 吕艳芬; 贾若坦; 王玲臣; 郝世龙
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2023-09-08
Anticipated expiration: 2039-06-12
Also published as: CN112080893A

Abstract

The application discloses a washing machine and a method for disassembling a pulsator assembly of the washing machine, wherein the washing machine comprises the following components: a driving motor for providing power for washing laundry of the washing machine; the impeller assembly is detachably connected with the output shaft, and a clamping structure for axial positioning is arranged between the impeller assembly and the output shaft; the clamping structure is provided with a button for disassembling the impeller assembly from the output shaft. The clamping structure is arranged, so that the axial fixation of the impeller assembly is realized, and the impeller assembly is simple and convenient to install; when the impeller assembly is required to be disassembled, the limiting piece moves axially by pressing the button on the clamping structure, so that the clamping piece has a space for radial movement, and the clamping piece is released from clamping the clamping groove; and then the impeller assembly is lifted upwards, so that the impeller assembly is separated from the output shaft, and the disassembly operation is simple. Realize dismantling the impeller subassembly through pressing the button, realize the fixed breaking away from of block for the structure setting of block structure is simple, and easy operation is convenient.

Description

Washing machine and method for disassembling pulsator assembly of washing machine

Technical Field

The application belongs to the technical field of washing machines, and particularly provides a washing machine and a method for disassembling a pulsator assembly of the washing machine.

Background

After the existing washing machine is used for a certain time, some dirt and bacteria are usually left on the invisible positions on the lower surface of the pulsator, the inner barrel and the outer barrel wall, and the washing machine is not easy to clean. Can cause cross infection, skin diseases and other diseases even if not cleaned for a long time. At present, the most reliable method for cleaning the components is to detach the components and then clean the components. However, since the pulsator of the existing washing machine is fixedly connected with the output shaft of the driving part through bolts, the disassembly and the assembly of the pulsator are troublesome, and the washing of the pulsator is not facilitated; and the screw immersed in water for a long time is combined and bonded with the impeller plastic part, so that the disassembly and the assembly of the impeller are very time-consuming, and the problem that the impeller cannot be disassembled often occurs. Some pulsators of washing machines are detachably connected to the output shaft, but the detachable structure is too complex, and the problem of inconvenience in detachment still exists.

The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

Aiming at the problems in the prior art, the application provides the washing machine which realizes the axial fixation of the pulsator assembly and ensures that the pulsator assembly is simple and convenient to install.

In order to achieve the aim of the application, the application is realized by adopting the following technical scheme:

a washing machine, comprising:

the driving motor is used for providing power for washing clothes of the washing machine and is connected with the output shaft;

the impeller assembly is detachably connected with the output shaft, and a clamping structure for axial positioning is arranged between the impeller assembly and the output shaft;

the clamping structure is provided with a button for disassembling the impeller assembly from the output shaft.

Further, the clamping structure comprises a clamping piece arranged on the impeller assembly, a limiting piece used for limiting the axial movement of the clamping piece, and a clamping groove arranged on the output shaft and matched with the clamping piece, when the button is pressed, the limiting piece is pushed to move axially, so that the clamping piece has a space for moving radially, and the clamping of the clamping piece to the clamping groove is released.

Further, the clamping structure further comprises a positioning cavity arranged on the impeller assembly, the positioning cavity is provided with a positioning cavity wall limiting radial displacement of the clamping piece, and the clamping piece is in contact with the positioning cavity wall.

Further, the positioning chamber wall extends gradually and obliquely outward in the direction in which the restricting member moves when the pulsator assembly is detached.

Further, the positioning cavity is a conical cavity, and a through hole for the output shaft to pass through is formed in the bottom of the positioning cavity.

Further, the button is provided with at least one radially movable button block, an inclined power transmission surface is arranged on the button block, and a power receiving surface matched with the power transmission surface is arranged on the limiting piece.

Further, the inclination angles of the power transmission surface and the power receiving surface are the same.

Further, a bearing block extending outwards in the radial direction is arranged on the limiting piece, and the outer side end surface of the bearing block is a power bearing surface.

Further, a transmission block extending inwards is arranged on the inner side of the key block, and the inner side end surface of the transmission block is a power transmission surface.

Further, an avoidance positioning groove for avoiding the bearing block is formed in the inner side of the key block.

Further, the impeller assembly further comprises an impeller and an outer cover fixedly arranged on the impeller, the outer cover is wrapped on the outer side of the clamping structure, and a mounting hole for mounting the button is formed in the outer cover.

Further, the clamping structure further comprises an elastic piece which pushes the limiting piece to achieve clamping of the clamping piece and the clamping groove.

Further, the elastic member is located between the outer cover and the limiting member.

Further, the positioning cavity is further provided with a positioning fixing part which extends outwards in the radial direction, the positioning fixing part is fixedly connected with the pulsator, and the edge of the through hole is provided with a positioning edge which extends downwards.

Further, the outer cover is provided with a downward extending extension edge, and the elastic piece is sleeved on the outer side of the extension edge.

Further, the limiting piece comprises a limiting cylinder extending upwards, the output shaft penetrates through the limiting cylinder, and the elastic piece is sleeved on the outer side of the limiting cylinder.

Further, the limiting piece comprises a containing cavity for containing the clamping piece, the containing cavity is sleeved on the outer side of the output shaft, and an opening for the clamping piece to extend out is formed in the outer wall of the containing cavity.

Further, the accommodating cavity is provided with a conical accommodating cavity outer wall, and an included angle between the outer wall of the accommodating cavity and the axis is smaller than an included angle between the positioning cavity wall and the axis.

Further, the clamping piece extends out of the opening and contacts the positioning cavity wall.

Further, after the pulsator assembly is clamped and fixed with the output shaft, the clamping groove is partially or completely located in the accommodating cavity.

Further, the clamping grooves with the same number as the clamping pieces are formed in the circumferential direction of the output shaft.

Further, a necking is arranged on the output shaft to form the clamping groove.

Further, the clamping piece is spherical.

Further, the impeller assembly further comprises a connecting piece sleeved on the outer side of the output shaft, a locking piece for preventing relative rotation of the connecting piece and the output shaft is arranged between the connecting piece and the output shaft, and the connecting piece is located at the lower portion of the impeller assembly.

Further, the output shaft comprises a first output shaft and a second output shaft which are coaxially and fixedly arranged, the diameter of the first output shaft is larger than that of the second output shaft, and the connecting piece is provided with a step hole matched with the first output shaft and the second output shaft.

Based on the washing machine, the disassembly method of the pulsator assembly of the washing machine is provided, and the axial fixation of the pulsator assembly is realized, so that the installation of the pulsator assembly is simple and convenient.

The disassembly method of the pulsator assembly of the washing machine comprises the following steps:

s10, pressing a button on the clamping structure;

s20, lifting the impeller assembly upwards to enable the impeller assembly to be separated from the output shaft;

and S30, releasing the pressing of the button.

Compared with the prior art, the application has the advantages and positive effects that: through the arrangement of the clamping structure, the axial fixation of the impeller assembly is realized, so that the impeller assembly is simple and convenient to install; when the impeller assembly is required to be disassembled, the limiting piece moves axially by pressing the button on the clamping structure, so that the clamping piece has a space for radial movement, and the clamping piece is released from clamping the clamping groove; and then the impeller assembly is lifted upwards, so that the impeller assembly is separated from the output shaft, and the disassembly operation is simple. Realize dismantling the impeller subassembly through pressing the button, realize the fixed breaking away from of block for the structure setting of block structure is simple, and easy operation is convenient.

Other features and advantages of the present application will become apparent upon review of the detailed description of the application in conjunction with the drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view illustrating a structure of an embodiment of a washing machine according to the present application;

FIG. 2 is a schematic view of the cross-sectional structure of A-A;

FIG. 3 is a schematic view of a structure of the pulsator assembly shown in FIG. 2 during disassembly;

FIG. 4 is a schematic structural view of the pulsator assembly of FIG. 2;

FIG. 5 is a schematic diagram of a portion of the structure of FIG. 2;

FIG. 6 is a schematic top view of FIG. 5;

FIG. 7 is a schematic view of the cross-sectional structure B-B of FIG. 6;

FIG. 8 is an enlarged schematic view of a portion of the structure of FIG. 7;

FIG. 9 is an enlarged schematic view of the positioning chamber of FIG. 8;

FIG. 10 is an enlarged schematic view of the limiter of FIG. 8;

FIG. 11 is an enlarged schematic view of the key block of FIG. 8;

fig. 12 is an enlarged schematic view of the second output shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

In the description of the present application, the terms "upper", "lower", "left", "right", and the like refer to the directions or positional relationships indicated by the terms "inner" and "outer" in the directions close to the axis of the inner tube, based on the positional relationships shown in the drawings. The terminology is used for the purpose of describing and simplifying the description only, and is not intended to indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 12, which are an embodiment of a washing machine according to the present application, a washing machine includes an output shaft 20 connected to a driving motor, and a pulsator assembly 10 detachably connected to the output shaft 20, wherein the pulsator assembly 10 may be integrally fastened to or separated from the output shaft 20; the driving motor provides power for washing clothes of the washing machine, the driving motor is connected with the output shaft 20, the pulsator assembly 10 is detachably connected with the output shaft 20, and a clamping structure for axial clamping is arranged between the pulsator assembly 10 and the output shaft 20; the snap-in structure has a button 13 for the removal of the pulsator assembly 10 from the output shaft 20.

The axial fixation of the pulsator assembly 10 is realized by arranging the clamping structure, so that the pulsator assembly 10 is simple and convenient to install; when the impeller assembly 10 needs to be disassembled, the limiting piece 14 moves axially by pressing the button 13 on the clamping structure, so that the clamping piece 12 has a space for radial movement, and the clamping of the clamping piece to the clamping groove is released; and then the impeller assembly is lifted upwards, so that the impeller assembly is separated from the output shaft, and the disassembly operation is simple. Realize dismantling the impeller subassembly through pressing button 13, realize the fixed breaking away from of block for the structure setting of block structure is simple, and the operation is laborsaving convenient.

Referring to fig. 2, the clamping structure comprises a clamping member 12 arranged on the impeller assembly 10, a limiting member 14 capable of axially moving with the clamping member 12, and a clamping groove 21 arranged on the output shaft 20 and matched with the clamping member 12; when the pulsator assembly 10 is engaged with the output shaft 20, the limiting member 14 is fixed relative to the output shaft 20, the axial and radial movements of the clamping member 12 are limited, and the clamping member 12 is engaged in the clamping groove 21, so that the pulsator assembly 10 is prevented from being separated relative to the output shaft 20 in the axial direction. Of course, after the pulsator assembly 10 is engaged with the output shaft 20, the output shaft 20 may drive the pulsator assembly 10 to rotate.

Referring to fig. 3, when the pulsator assembly 10 is disassembled, the button 13 is pressed, the button 13 pushes the limiting member 14 to move upwards in the axial direction, so that the clamping member 12 can move axially, preferably, the limiting member 14 drives the clamping member 12 to move axially together, so that the clamping member 12 has a space for moving radially, and the clamping of the clamping member to the clamping groove is released; when the pulsator assembly 10 is lifted upward, the chucking member 12 is disengaged from the chucking groove 21, and the pulsator assembly is completely disassembled.

In order to achieve that after the clamping member 12 has an axial movement space, also has a radial movement space, the clamping structure further comprises a positioning cavity 15 provided on the pulsator assembly 10, as shown in fig. 4 and 8, the positioning cavity 15 having a positioning cavity wall 151 defining a radial displacement of the clamping member 12, the clamping member 12 being in contact with the positioning cavity wall 151. A second through hole 152 for the output shaft 20 to extend into is formed in the bottom of the positioning cavity 15, and the upper end of the positioning cavity 15 is an open end. The clamping piece 12 is limited and locked through the limiting piece 14, the positioning cavity wall 151 and the clamping groove 21; when the pulsator assembly 10 is disassembled, the locking of the chucking member 12 is removed by pushing the button 13 and thus pushing the movement of the restricting member 14.

The clamping piece 12 contacts the bottom of the clamping groove 21 on the inner side and contacts the positioning cavity wall 151 on the outer side in the radial direction, and the positioning cavity wall 151 gradually extends outwards in the direction close to the open end of the positioning cavity 15 by arranging the positioning cavity wall 151, and the positioning cavity wall 151 gradually extends outwards in an inclined manner in the moving direction of the limiting piece 14 when the impeller assembly 10 is disassembled; i.e., the positioning chamber wall 151 extends upwardly and outwardly; the positioning cavity wall 151 is a conical cavity; after the pulsator assembly 10 is installed and fixed, the distance between the positioning chamber wall 151 and the bottom of the chucking groove 21 is gradually increased in the upward direction, that is, the radial distance is gradually increased in the upward direction. When the pulsator assembly 10 is disassembled, the button 13 is pressed so that the chucking member 12 and the limiting member 14 are moved upward, so that the chucking member 12 has a space to move outward in the radial direction; after the wave wheel assembly 10 is lifted upwards, the clamping piece 12 moves upwards at any time, when the wave wheel assembly 10 reaches the upper end of the clamping groove 21, due to the inclined arrangement of the positioning cavity wall 151, after the clamping piece 12 moves upwards, the positioning cavity wall 151 does not block the clamping piece 12, so that the clamping piece 12 moves outwards, and is separated from the clamping groove 21, and the clamping lock between the wave wheel assembly 10 and the output shaft 20 is released.

In other embodiments, the positioning cavity 15 may not be provided with an opening at the upper end, but a slightly larger opening may be provided at the upper end of the positioning cavity 15.

Referring to fig. 8, in order to enable the limiting member 14 to be pushed upwards after the button 13 is pressed, the button 13 is provided with at least one radially movable key block 131, an inclined power transmission surface 134 is arranged on the key block 131, and a power receiving surface 142 matched with the power transmission surface 134 is arranged on the limiting member 14. By pressing the key block 131 inwards, the inward pressure is transmitted to the power transmission surface 134 and further to the limiting piece 14, so that the power transmission surface 134 is inclined, and the force applied to the limiting piece 14 has axial force and radial force; the limiter 14 includes a limiting cylinder 141 extending upward, and the output shaft 20 passes through the limiting cylinder 141 so as to be immovable in the radial direction, the limiter 14 moving in the axial direction. The inclination angles of the power transmission surface 134 and the power receiving surface 142 are preferably the same, so that the contact area between the power transmission surface 134 and the power receiving surface 142 is increased, and the transmission of pressure between the power transmission surface 134 and the power receiving surface 142 is facilitated.

The number of the key blocks 131 can be one or a plurality of key blocks 131 are uniformly distributed in the circumferential direction, the key blocks 131 which are arranged opposite to the two key blocks 131 are preferentially arranged, the application of pressure is facilitated, the stable movement of the limiting piece 14 in the axial direction is facilitated, the mutual offset of radial forces of the plurality of key blocks 131 on the limiting piece 14 is facilitated, the radial force of the limiting piece 14 to the output shaft 20 is avoided, and the service life of the output shaft 20 and the rotation stability are ensured.

As shown in fig. 8, 10 and 11, the stopper 14 is provided with a receiving block 145 extending radially outward, and an outer end surface of the receiving block 145 is a power receiving surface 142. The inside of the key block 134 is provided with a transmission block 132 extending inwards, and the inside end surface of the transmission block 132 is a power transmission surface 134. By providing the receiving block 145 and the transmitting block 132, power transmission is facilitated. An avoidance positioning groove 133 for avoiding and limiting the bearing block 145 is arranged on the inner side of the key block 131; when the key block 131 is pressed, the key block 131 moves radially inwards, the limiting piece 14 moves axially, and the key block 131 and the limiting piece 14 are radially close to each other; when the receiving block 145 reaches the avoidance positioning groove 133, the limiting piece 14 is limited in the circumferential radial direction, so that the rotation of the limiting piece 14 while moving in the axial direction is avoided, the contact between the power transmission surface 134 and the power receiving surface 142 is ensured, and the power transmission is ensured; at the same time avoiding interference during movement.

The limiting member 14 includes a receiving chamber 140 for receiving the clamping member 12, the clamping member 12 is positioned within the receiving chamber 140, the output shaft 20 passes through the receiving chamber 140, and the receiving chamber 140 and the output shaft 20 are coaxially disposed; after the clip 12 is engaged with the clip groove 21, the clip groove 21 is partially or entirely located in the accommodating chamber 140, and the inner side of the clip 12 contacts the bottom of the clip groove 21. A first through hole 143 is formed at the center of the receiving chamber 140 for the passage of the output shaft 20. An opening 144 for the extension of the clamping member 12 is provided in the cavity wall of the receiving cavity 140, the diameter of the opening 144 is smaller than the diameter of the clamping member 12, and the clamping member 12 extends out of the opening 144 and contacts the positioning cavity wall 151. By providing the limiting member 14 with the accommodating cavity 140, the accommodating cavity 140 is sleeved outside the output shaft 20, so that the limiting member 14 can only move up and down in the axial direction; when the limiting member 14 moves up and down, the clamping member 12 can be driven to move synchronously, and the clamping member 12 can move radially, so that the clamping member 12 can be engaged with and disengaged from the clamping groove 21.

The defining cylinder 141 is located on the upper end surface of the accommodating chamber 140, and the receiving block 145 is provided outside the defining cylinder 141, and the output shaft 20 passes through the accommodating chamber 140 and also passes through the defining cylinder 141.

The accommodating cavity 140 has a conical accommodating cavity outer wall, and an included angle between the accommodating cavity outer wall and the axis is smaller than an included angle between the positioning cavity wall 151 and the axis; facilitating the up and down movement of the limiting member 14 within the positioning cavity 15. The positioning cavity wall 151 is an inner wall of the positioning cavity 15, the positioning cavity wall 151 and the outer wall of the accommodating cavity are both conical, and an included angle between the positioning cavity wall 151 and the axis is an included angle between a bus of the positioning cavity wall 151 and the axis.

Referring to fig. 8, the clamping structure further includes an elastic member 16 for providing an urging force for the limiting member 14, and after the clamping member 12 is clamped and fixed with the clamping groove 21, the elastic member 16 gives the limiting member 14 a downward elastic force, and under the cooperation of the limiting member 14 and the positioning cavity wall 151, the clamping member 12 is limited at the clamping groove 21, so as to realize the clamping and fixing of the impeller assembly 2. The impeller assembly 10 further comprises an impeller 11 and an outer cover 17 fixedly arranged with the impeller 11, the outer cover 17 is of a basin-shaped structure and is reversely buckled at the central position of the impeller assembly 10, the outer cover 17 is coated on the outer side of the clamping structure, and the clamping piece 12, the limiting piece 14 and the positioning cavity 15 are all located in a space surrounded by the outer cover 17; the outer cover 17 is provided with a mounting hole 171 for mounting the button 13, and the button 13 is radially movable in the mounting hole 17. The elastic member 14 is located between the outer cover 17 and the limiting member 14, and the lower end of the elastic member 16 is sleeved outside the limiting cylinder 141. The outer cover 17 is provided with a downward extending extension edge 172, and the upper end of the elastic piece 16 is sleeved outside the extension edge 12; on one hand, the limiting piece 14 can move stably up and down on the output shaft 20, and the moving stability of the limiting piece 14 is guaranteed; on the other hand, the spring 16 is advantageous for better transmission of the spring force to the limiting member 14.

As described with reference to fig. 9, for the structural arrangement of the positioning cavity 15, the positioning cavity 15 is a cavity formed by extending and surrounding the positioning cavity wall 151, and the positioning cavity wall 151 is a conical surface; in order to realize the fixation of the positioning cavity 15, the positioning cavity 15 is further provided with a positioning fixing portion 153 extending radially outwards, the positioning fixing portion 153 is fixedly connected with the pulsator 11, a second positioning edge 154 extending downwards is arranged at the edge of the second through hole 152, and the positioning cavity 15 is mounted and positioned by arranging the second positioning edge 152, and stability after fixation is facilitated.

Referring to fig. 4, the pulsator assembly 10 further includes a coupling member 18 coupled to the outside of the output shaft 20, a locking member for preventing the coupling member 18 from rotating relative to the output shaft 20 is provided between the coupling member 18 and the output shaft 20, and the coupling member 18 is positioned at the lower portion of the pulsator assembly 10. The output shaft 20 comprises a first output shaft 22 and a second output shaft 23 which are coaxially and fixedly arranged, the diameter of the first output shaft 22 is larger than that of the second output shaft 23, and a step hole 181 matched with the first output shaft 22 and the second output shaft 23 is formed in the connecting piece 18; the second locating lip 154 is located within the stepped bore 181.

For the structural arrangement of the clamping member 12, a multi-medium structural form, such as a sphere, an ellipse and an irregular shape can be adopted; preferably, the contact part of the clamping piece 12 and the positioning cavity wall 151 adopts an arc surface structure, which is beneficial to the relative movement of the clamping piece 12 after the contact with the positioning cavity wall 151; more preferably, clip 12 is provided in a spherical shape, is not positioned when clip 12 is installed, and is smooth due to movement when moving, engaging, and disengaging from the catch.

One or more clamping members 12 can be arranged in the clamping structure 2; preferably, three clamping members 12 are arranged in the accommodating cavity 140, and three clamping grooves 21 are formed in the circumferential direction of the output shaft 20; by providing three axially disposed clamping members 12, stability of the impeller assembly 10 after clamping and fixing is facilitated to be increased. The output shaft 20 may be provided with a neck forming groove 21.

Referring to FIGS. 2-4, a method for disassembling the pulsator assembly of the washing machine includes

S10, pressing the button 13 on the clamping structure.

Specifically, pressing the button 13 radially inward within the mounting hole 171 in the outer cover 17 causes the pressing key block 131 on the button 13 to transmit inward pressure to the power receiving surface 142 on the limiting member 14, pushing the limiting member 14 axially upward; the clamping member 12 has a space for radial movement, and the clamping member 12 is disengaged from the clamping groove.

when the pulsator assembly 10 is lifted upward, the chucking member 12 is disengaged from the chucking groove 21.

S30, pressing the button 13 is released, and the impeller assembly is detached. .

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A washing machine, comprising:

the clamping structure is provided with a button for disassembling the impeller assembly from the output shaft;

the clamping structure comprises a clamping piece arranged on the impeller assembly, a limiting piece used for limiting the axial movement of the clamping piece and a clamping groove arranged on the output shaft and matched with the clamping piece;

the clamping structure further comprises a positioning cavity arranged on the impeller assembly, wherein the positioning cavity is provided with a positioning cavity wall for limiting radial displacement of the clamping piece;

the inner side of the clamping piece in the radial direction contacts the bottom of the clamping groove, and the outer side of the clamping piece contacts the wall of the positioning cavity;

the positioning cavity wall gradually and outwards extends in an inclined manner in the moving direction of the limiting piece when the impeller assembly is disassembled;

when the button is pressed, the limiting piece is pushed to move axially, so that the clamping piece has a space for moving radially, and the clamping piece is released from clamping the clamping groove;

the limiting piece comprises a containing cavity for containing the clamping piece, the clamping piece is located in the containing cavity, the output shaft penetrates through the containing cavity, and the containing cavity and the output shaft are coaxially arranged; after the clamping piece is clamped in the clamping groove, part or all of the clamping groove is positioned in the accommodating cavity, and the inner side of the clamping piece is contacted with the bottom of the clamping groove;

a first through hole is formed in the center of the accommodating cavity and used for the passing of the output shaft; an opening for the clamping piece to extend out is formed in the cavity wall of the accommodating cavity, the diameter of the opening is smaller than that of the clamping piece, and the clamping piece extends out of the opening and contacts with the positioning cavity wall.

2. The washing machine as claimed in claim 1, wherein the button has at least one radially movable key block, an inclined power transmission surface is provided on the key block, and a power receiving surface matching the power transmission surface is provided on the limiting member.

3. The washing machine as claimed in claim 2, wherein the limiting member is provided with a receiving block extending radially outwardly, and an outer end surface of the receiving block is a power receiving surface.

4. The washing machine as claimed in claim 2, wherein a transmission block is provided inside the key block to protrude inward, and an inner end surface of the transmission block is a power transmission surface.

5. The washing machine as claimed in claim 2, wherein a avoidance positioning groove for avoiding the receiving block is provided at an inner side of the key block.

6. The washing machine as claimed in any one of claims 1 to 5, wherein the pulsator assembly further comprises a pulsator, and an outer cover fixedly arranged with the pulsator, the outer cover is coated on the outer side of the clamping structure, and a mounting hole for mounting the button is formed in the outer cover.

7. A method of removing a pulsator assembly of a washing machine as claimed in any one of claims 1 to 6, comprising the steps of:

s10, pressing a button on the clamping structure;

and S30, releasing the pressing of the button.