CN111663285B

CN111663285B - Washing machine

Info

Publication number: CN111663285B
Application number: CN201910173549.3A
Authority: CN
Inventors: 贾若坦; 郝世龙; 劳春峰; 金学峰
Original assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-03-07
Filing date: 2019-03-07
Publication date: 2023-01-24
Anticipated expiration: 2039-03-07
Also published as: CN111663285A

Abstract

The invention provides a washing machine, which comprises an output shaft and an impeller assembly detachably connected with the output shaft, wherein the impeller assembly is provided with an impeller and a clamping structure for axially clamping and positioning the impeller assembly, the output shaft is provided with at least one clamping groove matched with the clamping structure, and the clamping structure is separated from the clamping groove through magnetic force. The clamping structure is separated from the clamping groove through magnetic force, when the impeller assembly needs to be disassembled, the magnetic force is generated to attract the clamping structure, the clamping structure is separated from the clamping groove, and the disassembling operation is simple; after the impeller is disassembled, the magnetic force is cancelled, so that the clamping structure is reset, and then the impeller assembly is installed in place; the disassembly is realized through magnetic attraction or repulsion, the force can be applied to the clamping structure under the condition that any part of the impeller assembly is not disassembled, the clamping structure is fixedly separated, the structure of the clamping structure is simple to set, and the operation is labor-saving and convenient.

Description

Washing machine

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a washing machine.

Background

After the existing washing machine is used for a certain time, dirt and bacteria are usually left at invisible positions on the lower surface of the impeller, the inner barrel and the outer barrel wall, and the washing machine is not easy to clean. The long-term washing is not clear, and the diseases such as cross infection, skin diseases and the like can be caused. At present, the most reliable method for cleaning the above parts is to disassemble and clean the parts. However, the impeller of the existing washing machine is fixedly connected with the output shaft of the driving part through bolts, so that the impeller is troublesome to disassemble and assemble and is not beneficial to cleaning the impeller; and the screw soaked in water for a long time is combined and bonded with the wave wheel plastic part, and the problem that the screw cannot be detached often occurs. Some wave wheels of the washing machine are connected to the output shaft in a detachable mode, but the detachable structure is too complex, and the problem of inconvenience in detachment still exists.

Disclosure of Invention

The invention provides a washing machine aiming at the problems in the prior art, which solves the problem that the impeller of the existing washing machine is inconvenient to disassemble and realizes the rapid disassembly and assembly of the impeller of the washing machine.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a washing machine comprises an output shaft and an impeller assembly detachably connected with the output shaft, wherein the impeller assembly is provided with an impeller and a clamping structure used for axial clamping and positioning of the impeller assembly, the output shaft is provided with at least one clamping groove matched with the clamping structure, and the clamping structure is separated from the clamping groove through magnetic force.

Furthermore, magnetic force for driving the clamping structure to be separated from the clamping groove is generated between the clamping structure and the disassembling tool.

Furthermore, the clamping structure comprises a clamping piece matched with the clamping groove for clamping and a limiting piece for locking the clamping piece in a clamping state, and the clamping piece can move radially relative to the limiting piece.

Furthermore, the limiting piece is provided with a first through hole for the output shaft to pass through.

Furthermore, the impeller assembly further comprises a positioning cavity for accommodating the clamping piece and the limiting piece, the positioning cavity is provided with a positioning cavity wall for limiting radial displacement of the clamping piece, the clamping piece is in contact with the positioning cavity wall, and a second through hole for the output shaft to pass through is formed in the bottom of the positioning cavity.

Furthermore, the positioning cavity wall gradually extends outwards in the direction of disengaging from the clamping structure, and the limiting piece is positioned above the clamping piece.

Furthermore, the clamping structure further comprises an elastic part which pushes the limiting part and realizes clamping installation of the clamping part and the clamping groove.

Furthermore, the positioning cavity is further provided with a positioning fixing part which extends radially outwards, the positioning fixing part is fixedly connected with the impeller, and a second positioning edge which extends downwards is arranged at the edge of the second through hole.

Furthermore, the impeller assembly further comprises an outer cover fixedly arranged with the impeller, the outer cover covers the outer side of the positioning cavity, and the elastic part is located between the outer cover and the limiting part.

Furthermore, a fourth extending edge extending downwards is arranged on the outer cover, and the elastic piece is sleeved on the outer side of the fourth extending edge.

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

Furthermore, the limiting piece comprises an accommodating cavity for accommodating the clamping piece, the accommodating cavity is sleeved outside the output shaft, an opening for the clamping piece to extend out is formed in the cavity wall of the accommodating cavity, and the clamping piece extends out of the opening and is in contact with the cavity wall of the accommodating cavity.

Furthermore, after the impeller assembly is clamped and fixed with the output shaft, the clamping groove is partially or completely positioned in the accommodating cavity.

Furthermore, the circumference of the output shaft is provided with the clamping grooves with the same number as the clamping pieces.

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

Further, the retainer is spherical.

Further, the limiting piece and/or the clamping piece are made of metal materials which can be adsorbed by the magnet.

Furthermore, the impeller assembly further comprises a connecting piece sleeved on the outer side of the output shaft, a locking piece for preventing the connecting piece and the output shaft from rotating relatively is arranged between the connecting piece and the output shaft, and the connecting piece is located at the lower part of the impeller assembly.

Furthermore, 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 stepped hole matched with the first output shaft and the second output shaft.

Further, the extracting tool includes the magnet, is used for fixing the magnet fixed part of magnet and is located handheld portion on magnet fixed part upper portion, handheld portion has circumference and outwards stretches out a plurality of handheld muscle that set up.

Furthermore, an annular handle is arranged at the upper end of the handheld part.

According to the washing machine provided by the invention, the axial fixation of the impeller assembly is realized by arranging the clamping structure and clamping the clamping groove, so that the impeller assembly is simple and convenient to mount; the clamping structure is separated from the clamping groove through magnetic force, when the impeller assembly needs to be disassembled, the magnetic force is generated to attract the clamping structure, the clamping structure is separated from the clamping groove, and the disassembling operation is simple; after the impeller is disassembled, the magnetic force is cancelled, so that the clamping structure is reset, and then the impeller assembly is installed in place; through magnetic force attraction or repulsion realization dismantlement, because the penetrability of magnetic force, can realize exerting force to the block structure under the condition of not dismantling any part of impeller subassembly, realize that the block is fixed breaks away from for the structure of block structure sets up simply, and the labour saving and convenient operation.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a washing machine according to the present invention;

FIG. 2 is an enlarged sectional view taken along line A-A in FIG. 1;

FIG. 3 is an enlarged view of the engagement structure of FIG. 2;

FIG. 4 is an enlarged view of a portion of the wave wheel assembly of FIG. 2, shown disassembled;

FIG. 5 is a schematic view of the output shaft of FIG. 2;

FIG. 6 is an enlarged schematic view of the second output shaft of FIG. 5;

FIG. 7 is an enlarged schematic view of the restriction member of FIG. 4;

FIG. 8 is an enlarged schematic view of the positioning chamber of FIG. 2;

FIG. 9 is a schematic view of the removal tool;

FIG. 10 is a schematic front view of the structure of FIG. 9;

FIG. 11 is a schematic cross-sectional view of FIG. 10;

FIG. 12 is a flowchart of a method of disassembling the pulsator assembly;

fig. 13 is a schematic structural view of a second embodiment of a washing machine according to the present invention;

FIG. 14 is an enlarged view of the snap structure of FIG. 14;

FIG. 15 is a schematic view of the output shaft of FIG. 13;

fig. 16 is a schematic structural view of a washing machine according to a third embodiment of the present invention;

fig. 17 is an enlarged structural view of the engagement structure in fig. 16.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "inner", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the positional relationships shown in the drawings, and the direction close to the axis of the pulsator assembly is "inner" and the direction of the axis of the pulsator assembly is "outer". The terminology is for the purpose of describing the invention only and is for the purpose of simplifying the description and is not intended to be exhaustive or to imply that the apparatus or components referred to must be capable of particular orientation, construction and operation in a particular orientation and therefore should not be considered limiting of the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Referring to fig. 1 to 12, in a first embodiment of the washing machine according to the present invention, the washing machine includes an output shaft 20 connected to a driving motor, and a pulsator assembly 10 detachably connected to the output shaft 20, the pulsator assembly 10 may be integrally engaged with and fixed to or disengaged from the output shaft 20, the pulsator assembly 10 has a pulsator 1 and a locking structure 2 for axially positioning the pulsator assembly 10, the output shaft 20 is provided with at least one locking groove 201 matched with the locking structure 2, and the locking structure 2 is disengaged from the locking groove 201 by magnetic force. The axial fixation of the impeller assembly 10 is realized by arranging the clamping structure 2 and the clamping groove 201 for clamping, so that the installation of the impeller assembly 10 is simple and convenient; when the impeller assembly 10 needs to be disassembled, magnetic force is generated to attract the clamping structure 2, so that the clamping structure 2 is separated from the clamping groove 201, and the disassembling operation is simple; after the impeller 1 is disassembled, the magnetic force is removed, so that the clamping structure 2 is reset, and then the impeller assembly is installed in place; through magnetic force attraction or repulsion realization dismantlement, because the penetrability of magnetic force, can realize exerting force to block structure 2 under the condition that does not dismantle any part of impeller subassembly 10, realize the fixed breaking away from of block for block structure 2's structure sets up simply, and the labour saving and time saving of operation is convenient.

In the present embodiment, the removal tool 30 is required for removing the engaging structure 2, and the removal tool 30 has a magnet 301, and the magnet 301 is preferably a magnet or an electromagnet. When the pulsator assembly 10 needs to be disassembled, the disassembling tool 30 is placed above the clamping structure 2 of the pulsator assembly 10, or placed in the moving direction in which the clamping structure 2 is separated, after the disassembling tool 30 approaches the clamping structure 2, attractive magnetic force is generated between the disassembling tool 30 and the clamping structure 2, the clamping structure 2 is attracted to move towards the disassembling tool 30, namely to move upwards, so that the clamping structure 2 is separated from the clamping groove 201, namely the axial locking between the pulsator assembly 10 and the output shaft 20 is released; then, the impeller assembly 10 moves upwards to be separated from the output shaft 20, so that the impeller assembly 10 is disassembled; the removal tool 30 is then removed, so that the catch 2 is reset. After the pulsator assembly 10 is cleaned, the pulsator assembly 10 is mounted on the output shaft 20, and the engaging structure 2 is engaged with the engaging groove 201.

Referring to fig. 3, the engaging structure 2 includes a fastening member 21 for engaging with the engaging slot 201, and a limiting member 22 for locking the fastening member 21 in an engaging state, wherein the fastening member 21 is radially movable relative to the limiting member 22, and the limiting member 22 is provided with a first through hole 221 for passing the output shaft 20. The limiting piece 22 limits the axial position of the clamping piece 21, and the clamping piece 21 can move radially relative to the limiting piece 22 to realize the clamping and the disengagement of the clamping piece 21 and the clamping groove 201; when the pulsator assembly 10 is disassembled and the engaging structure 2 moves in a direction close to the clothes inlet of the washing machine, the retainer 21 is withdrawn from the engaging groove 201, and the axial engagement lock between the engaging structure 2 and the output shaft 20 is released.

The pulsator assembly 10 further comprises a positioning cavity 3 for accommodating the chucking member 21 and the limiting member 22, the positioning cavity 3 has a positioning cavity wall 31 for limiting radial displacement of the chucking member 21, the chucking member 21 contacts the positioning cavity wall 31, a second through hole 32 for the output shaft 20 to extend into is opened at the bottom of the positioning cavity 3, and the upper end of the positioning cavity 3 is an open end. The clamping piece 21 is limited and locked by the limiting piece 22, the positioning cavity wall 31 and the clamping groove 201, and when the pulsator assembly 10 is disassembled, the clamping piece 21 is locked and removed through the movement of the limiting piece 22. The inner side of the clamping piece 21 contacts the bottom of the clamping groove 201 in the radial direction, the outer side contacts the positioning cavity wall 31, and the positioning cavity wall 31 gradually extends outwards in the direction close to the open end of the positioning cavity 3, namely the positioning cavity wall 31 extends upwards and outwards; after the pulsator assembly 10 is mounted and fixed, the distance between the positioning chamber wall 31 and the bottom of the groove 201 gradually increases in the upward direction, that is, the radial distance gradually increases in the upward direction. When the pulsator assembly 10 is disassembled, the disassembling tool 30 attracts the catching structure 2 to move upward, so that the chucking member 21 and the restriction member 22 move upward, so that the chucking member 21 has a space to move outward in a radial direction; the clamping piece 21 moves upwards, when the clamping piece 21 reaches the upper end of the clamping groove 201, due to the inclined arrangement of the positioning cavity wall 31, after the clamping piece 21 moves upwards, the positioning cavity wall 31 does not block the clamping piece 21 any more, so that the clamping piece 21 moves outwards and is separated from the clamping groove 201, then the impeller assembly 10 is lifted upwards, and at the moment, the clamping locking is already released.

In other embodiments, the positioning cavity 3 may not be provided with an opening at the upper end, but rather, a slightly larger opening may be provided at the upper end of the positioning cavity 3.

The clamping structure 2 further comprises an elastic part 23 for providing a pushing force for the limiting part 22, after the clamping structure 2 is clamped and fixed with the clamping groove 201, the elastic part 23 gives a downward elastic force to the limiting part 22, the clamping part 21 is limited at the clamping groove 201, and clamping and fixing of the impeller assembly 2 are achieved. When the pulsator assembly 2 is disassembled, the disassembling tool 30 is placed above the clamping structure 2, so that the disassembling tool 30 gives upward attraction to the clamping structure 2, the elastic piece 23 gives downward elastic force to the clamping structure 2, the magnetic attraction given to the clamping structure 2 by the disassembling tool 30 is set to be larger than the sum of the elastic force and the gravity of the clamping structure 2, the clamping structure 2 can move upwards, and the friction force needs to be overcome.

At least one of the chucking member 21 and the restricting member 22 of the chucking structure 2 is made of a metal material that can be attracted by the magnet 301. When the limiting piece 22 is made of magnetic metal material and the clamping piece 21 is not made of magnetic metal material, the disassembling tool 30 gives an upward attraction force to the limiting piece 22, and drives the clamping piece 21 to move upwards together when the limiting piece 22 moves upwards; there is space for radial movement relative to the delimiting member 22 after the gripping member 21 has been moved upwards; the clamping piece 21 is clamped and separated from the clamping groove 201.

When chucking piece 21 adopts magnetic metal material, and when the restriction member 22 did not adopt, extracting tool 30 attracts chucking piece 21 to move upwards, drives restriction member 22 and upwards moves together, but later chucking piece 21 has had radial movement's space, when chucking piece 21 reaches the upper end of draw-in groove 201, at radial outside removal for chucking piece 21 withdraws from draw-in groove 201, has relieved the axial block locking between block structure 2 and the output shaft 20.

When the magnetic metal material is used for both the chucking member 21 and the restriction member 22, the removal tool 30 attracts both the chucking member 21 and the restriction member 22 to move upward, and the chucking member 21 and the restriction member 22 move upward together because the downward force is also given to the restriction member 22 by the resilient member 23.

In the embodiment, the limiting member 22 limits the position of the clamping member 21 in the axial direction, and the clamping member 21 can move up and down along with the limiting member 22 in the axial direction; the restricting member 22 has only the axial up-and-down movement during the engaging and disengaging process, and the chucking member 21 also needs to have the radial movement, so that it is preferable to arrange the restricting member 22 to be made of a metal material that can be attracted by the magnet 301 and the chucking member 21 to be made of a material that is not attracted by the magnet 301.

As for the structural arrangement of the clamping piece 21, a multi-center structural form, such as a sphere, an ellipse and an irregular shape, can be adopted; the contact part of the clamping piece 21 and the positioning cavity wall 31 is preferably arranged to adopt an arc surface structure, so that the relative movement of the clamping piece 21 and the positioning cavity wall 31 after contact is facilitated; it is more preferable to provide the retainer 21 in a spherical shape, which does not require positioning when the retainer 21 is attached, and which is smooth in movement when moving, engaging, and disengaging from the card slot.

One or more than one clamping pieces 21 can be arranged in the clamping structure 2; preferably, three clamping pieces 21 are arranged in the accommodating cavity 220, and three clamping grooves 201 are formed in the circumferential direction of the output shaft 20; through the chucking piece 21 that sets up three axial settings, be favorable to increasing the stability behind the impeller subassembly 10 block is fixed.

In the present embodiment, referring to fig. 7, the restriction member 22 includes a housing cavity 220 for housing the chucking member 21, the chucking member 21 is located in the housing cavity 220, the output shaft 20 passes through the housing cavity 220, and the housing cavity 220 and the output shaft 20 are coaxially arranged; after the clamping structure 2 is clamped in the clamping groove 201, the clamping groove 201 is partially or completely positioned in the accommodating cavity 220, and the inner side of the clamping member 21 is contacted with the bottom of the clamping groove 201. A first through hole 221 is opened at the center of the accommodating chamber 220. An opening 222 for the clamping piece 21 to extend out is formed in the cavity wall of the accommodating cavity 220, the diameter of the opening 222 is smaller than that of the clamping piece 21, and the clamping piece 21 extends out of the opening 222 and contacts with the positioning cavity wall 31. The limiting piece 22 is provided with a containing cavity 220, and the containing cavity 220 is sleeved on the outer side of the output shaft 20, so that the limiting piece 22 can only move up and down; when the limiting piece 22 moves up and down, the clamping piece 21 can be driven to move synchronously, and the clamping piece 21 can move radially, so that the clamping piece 21 is clamped with and separated from the clamping groove 201. The limiting piece 22 further comprises a first limiting edge 223 extending upwards along the first through hole 221, the first limiting edge 223 is sleeved on the outer side of the output shaft 20, and the lower end of the elastic piece 23 is sleeved on the outer side of the first extending edge 223; by arranging the first limiting edge 223, on one hand, the limiting piece 22 can be ensured to move up and down stably on the output shaft 20, and the stability of the movement of the limiting piece 22 is ensured; on the other hand, the cooperation of the elastic member 23 and the first limiting edge 223 is facilitated, and the elastic force is better transmitted to the limiting member 22.

Referring to fig. 3, the pulsator assembly 10 further includes an outer cover 4 fixedly disposed with the pulsator 1, an elastic member 23 is positioned between the outer cover 4 and the limiting member 22, and a lower end of the elastic member 23 is in contact with the limiting member 22 and an upper end thereof is in contact with the outer cover 4. The outer cover 4 covers the outer side of the positioning cavity 3 to seal the positioning cavity 3 and prevent washing water from entering the positioning cavity 3; the outer cover 4 has a receiving portion of a lower mouth in which the positioning chamber 3 is located. A fourth extension edge 41 extending downwards is arranged on the outer cover 4, and the upper end of the elastic member 23 is sleeved on the outer side of the fourth extension edge 41.

Referring to fig. 4 and 8, for the structural arrangement of the positioning cavity 3, the positioning cavity 3 is a cavity formed by extending and surrounding the positioning cavity wall 31, and the positioning cavity wall 31 is a conical surface; in order to fix the positioning cavity 3, the positioning cavity 3 is further provided with a positioning fixing portion 33 radially extending outwards, the positioning fixing portion 33 is fixedly connected with the impeller 1, a second positioning edge 34 extending downwards is arranged at the edge of the second through hole 32, and the second positioning edge 34 is favorable for mounting and positioning the positioning cavity 3 and has stability after fixing.

Referring to fig. 4, the pulsator assembly 10 further includes a coupling 5 fitted around the outside of the output shaft 20, and a locking member for preventing relative rotation between the coupling 5 and the output shaft 20 is provided between the coupling 5 and the output shaft 20, and the coupling 5 is located at a lower portion of the pulsator assembly 10. Referring to fig. 5, the output shaft 20 includes a first output shaft 202 and a second output shaft 203 which are coaxially and fixedly arranged, the diameter of the first output shaft 202 is larger than that of the second output shaft 203, and a stepped hole 5 matched with the first output shaft 202 and the second output shaft 203 is formed on the connecting piece 5; the second locating edge 34 is located in the stepped bore 5.

As shown in fig. 9 to 11, for the structure of the removal tool 30, a single magnet may be used, but for convenience of operation, it is preferable that the removal tool 30 includes a magnet 301, a magnet fixing portion 302 for fixing the magnet, and a hand-held portion 303 located above the magnet fixing portion 302, and the hand-held portion 303 has a plurality of hand-held ribs extending outward in the circumferential direction. Have handheld portion 303 through setting up extracting tool, it is convenient to be favorable to taking extracting tool, place extracting tool 30 behind enclosing cover 4, have great mutual appeal between extracting tool 30 and the limiting piece 22 of block structure 2, dismantle the back at impeller subassembly 10, need overcome the magnetic attraction between extracting tool 30 and the limiting piece 22 and just can take away extracting tool 30, therefore set up handheld portion 303, be convenient for give extracting tool 30 great power through the hand. An annular pull 304 is provided at the upper end of the hand grip 303, the pull 304 being provided to facilitate access to the removal tool 30.

Referring to fig. 12, the method for disassembling the pulsator assembly 10 includes the steps of:

A. extending a disassembling tool 30 into the inner tub from a laundry inlet of the washing machine and near the center of the pulsator assembly 10; the engagement structure 2 is disposed at the center of the pulsator assembly 10.

B0, in the process that the detaching tool 30 approaches the engaging structure 2, when the distance between the detaching tool 30 and the engaging structure 2 is equal to or smaller than the magnetic force induction range therebetween, a magnetic force is generated between the detaching tool 30 and the engaging structure 2, so that the detaching tool 30 and the engaging structure 2 have a tendency to approach each other.

B. The detaching tool 30 and the engaging structure 2 generate a magnetic force attracting each other, so that the engaging structure 2 is disengaged from the slot 201.

Specifically, when the detaching tool 30 reaches the upper end of the pulsator assembly 10 under the action of the magnetic force, the detaching tool 30 cannot move in a direction to continuously approach the engaging structure 2, and the engaging structure 2 moves in a direction to the detaching tool 30 under the action of the magnetic force, so that the locking between the engaging structure 2 and the locking groove 201 is released.

When the detaching tool 30 reaches the upper end of the pulsator assembly 10, the magnetic force generated between the detaching tool 30 and the engaging structure 2 is greater than the pushing force provided by the elastic member 23, so that the engaging structure 2 moves upward.

C. The pulsator assembly 30 is moved toward the laundry inlet and is disassembled.

Referring to fig. 13 to 15, the second embodiment of the washing machine according to the present invention mainly differs from the first embodiment in that: the positioning chamber structure and the restricting member structure are different, and the same structure as that of the first embodiment may be adopted.

The utility model provides a washing machine includes output shaft 20 that is connected with driving motor, and can dismantle impeller subassembly 10 of being connected with output shaft 20, impeller subassembly 10 can be whole fixed or break away from separately with the output shaft block, impeller subassembly 10 has impeller 1, and is used for impeller subassembly 10 axial positioning's block structure 2, offers on output shaft 20 with block structure 2 assorted at least one draw-in groove 201, realizes breaking away from of block structure 2 and draw-in groove 201 through magnetic force. The axial fixation of the impeller assembly 10 is realized by arranging the clamping structure 2 and the clamping groove 201 for clamping, so that the installation of the impeller assembly 10 is simple and convenient; when the impeller assembly 10 needs to be disassembled, magnetic force is generated to attract the clamping structure 2, so that the clamping structure 2 is separated from the clamping groove 201, and the disassembling operation is simple; after the impeller 1 is disassembled, the magnetic force is cancelled, so that the clamping structure 2 is reset, and then the impeller component is installed in place; through magnetic force attraction or repulsion realization dismantlement, because the penetrability of magnetic force, can realize exerting force to block structure 2 under the condition that any part of impeller subassembly 10 was not dismantled, realize the fixed breaking away from of block for block structure 2's structure sets up simply, and the laborsaving convenience of operation.

In this embodiment, the engaging structure 2 includes a fastening member 21 engaged with the engaging slot 201, and a limiting member 22 for limiting the fastening member 21, wherein the limiting member 22 has a flat plate-shaped body 220, a first through hole 221 formed on the flat plate-shaped body 220, and a first limiting edge 223 extending upward along the first through hole 221, and the fastening member 21 is located below the flat plate-shaped body 220; that is, the delimiting member 22 delimits the chucking member 21 from being able to reach the highest position in the axial direction, that is, the chucking member 21 is in close proximity to the contact delimiting member 22, or the chucking member 21 is located at a distance below the delimiting member 22.

When the restricting member 22 is made of a magnetic metal material and the chucking member 21 is not used, that is, the restricting member 22 is not brought together when the chucking member 21 is moved upward, but the restricting member 22 defines a position which the chucking member 21 can reach in the axial direction upward, and the chucking member 21 is movable radially and also axially relative to the restricting member 22. The limiting piece 22 limits the clamping piece 21 to be at the highest position in the axial direction, and the clamping piece 21 can move radially relative to the limiting piece 22 after the limiting piece 22 moves upwards to realize the clamping and the disengagement of the clamping piece 21 and the clamping groove 201; when the pulsator assembly 10 is disassembled and the clamping member 21 moves away from the output shaft 20, the clamping member 21 is withdrawn from the clamping groove 201, and the axial clamping lock between the clamping structure 2 and the output shaft 20 is released.

When the retainer 21 is made of a magnetic metal material and the limiting member 22 is not used, the disassembling tool 30 attracts the retainer 21 to move upward, at this time, the retainer 21 pushes the limiting member 22 to move upward together, and then the retainer 21 has a space capable of moving radially outward, so that the retainer 21 is withdrawn from the pocket 201 when the retainer 21 reaches the upper end of the pocket 201, and the axial snap lock between the snap structure 2 and the output shaft 20 is released.

In this embodiment, the positioning chamber 3 is U-shaped, the positioning chamber wall 31 is located at the lower portion of the positioning chamber 3, the retainer 21 is positioned by the positioning chamber wall 31, the engaging groove 201, and the limiting member 22, the limiting member 22 gives a downward force to the retainer 21, the positioning chamber wall 31 gives an upward and inward force to the retainer 21, and the engaging groove 201 gives an outward force to the retainer 21. The clamping piece 21 and the limiting piece 22 can move up and down in the positioning cavity 3 under the action of magnetic force and elastic force, so that the fixing and unlocking of the impeller assembly 10 and the input shaft 20 are realized.

In this embodiment, the locking groove 201 is formed by disposing a constriction on the output shaft 20, that is, the locking groove 201 is an annular structure disposed coaxially with the output shaft 20; therefore, when the clamping piece 21 and the clamping groove 201 are clamped and installed, the positioning is not needed in the circumferential direction, and the improvement of the simplicity of installation is facilitated.

The method of disassembling the pulsator assembly 10 in the first embodiment is also applicable to the present embodiment.

Referring to fig. 16-17, the third embodiment of the washing machine according to the present invention mainly differs from the first embodiment in that: the output shaft does not protrude upward beyond the restricting member, and the other may be configured as in the first embodiment.

The utility model provides a washing machine includes output shaft 20 that is connected with driving motor, and can dismantle impeller subassembly 10 of being connected with output shaft 20, impeller subassembly 10 can be whole fixed or break away from separately with output shaft 20 block, impeller subassembly 10 has impeller 1, and is used for impeller subassembly 10 axial positioning's block structure 2, offers on output shaft 20 with block structure 2 assorted at least one draw-in groove 201, realizes breaking away from of block structure 2 and draw-in groove 201 through magnetic force. The axial fixation of the impeller component 10 is realized by arranging the clamping structure 2 and the clamping groove 201 for clamping, so that the installation of the impeller component 10 is simple and convenient; when the impeller assembly 10 needs to be disassembled, magnetic force is generated to attract the clamping structure 2, so that the clamping structure 2 is separated from the clamping groove 201, and the disassembling operation is simple; after the impeller 1 is disassembled, the magnetic force is removed, so that the clamping structure 2 is reset, and then the impeller assembly is installed in place; through magnetic force attraction or repulsion realization dismantlement, because the penetrability of magnetic force, can realize exerting force to block structure 2 under the condition that any part of impeller subassembly 10 was not dismantled, realize the fixed breaking away from of block for block structure 2's structure sets up simply, and the laborsaving convenience of operation.

Referring to fig. 7, the fastening structure 2 includes a fastening member 21 for mating with the fastening groove 201, and a limiting member 22 for limiting the fastening member 21; the construction of the restricting member 22 is substantially the same as that of the first embodiment except that the upper end of the output shaft 20 is located in the accommodating chamber 220, and thus the through-hole may not be opened at the top of the accommodating chamber 220.

Specifically, the limiting member 22 includes an accommodating cavity 220 for accommodating the fastening member 21, after the fastening structure 2 is fastened to the fastening groove 201, the fastening member 21 is located in the accommodating cavity 220, the upper end of the output shaft 20 extends into the accommodating cavity 220, the accommodating cavity 220 and the output shaft 20 are preferably coaxially arranged, and the inner side of the fastening member 21 is in contact with the bottom of the fastening groove 201. The limiting piece 22 is provided with a containing cavity 220, and the containing cavity 220 is sleeved on the outer side of the output shaft 20, so that the limiting piece 22 can only move up and down; when the limiting piece 22 moves up and down, the clamping piece 21 can be driven to move synchronously, and the clamping piece 21 can move radially, so that the clamping piece 21 is clamped with and separated from the clamping groove 201. The limiting piece 22 further comprises a first limiting edge 223 extending upwards along the upper end of the accommodating cavity 220, the first limiting edge 223 is arranged coaxially with the output shaft 20, the first limiting edge 223 is sleeved on the outer side of the output shaft 20, and the lower end of the elastic piece 23 is sleeved on the outer side of the first extending edge 223; by arranging the first limiting edge 223, on one hand, the limiting member 22 can be ensured to move up and down stably on the output shaft 20, and the stability of the movement of the limiting member 22 is ensured; on the other hand, the cooperation between the elastic member 23 and the first limit edge 223 is facilitated, and the elastic force is better transmitted to the limit member 22.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. A washing machine comprises an output shaft and an impeller assembly detachably connected with the output shaft, and is characterized in that the impeller assembly is provided with an impeller and a clamping structure for axially clamping and positioning the impeller assembly, the output shaft is provided with at least one clamping groove matched with the clamping structure, and the clamping structure is separated from the clamping groove through magnetic force; the clamping groove extends along the axial direction;

the disassembly tool is provided with a magnet, a magnet fixing part for fixing the magnet and a handheld part positioned on the upper part of the magnet fixing part.

2. The washing machine as claimed in claim 1, wherein the engaging structure includes a retainer to be engaged with the engaging groove, and a restricting member to lock the retainer in an engaged state, the retainer being radially movable relative to the restricting member.

3. The washing machine as claimed in claim 2, wherein the pulsator assembly further comprises a positioning chamber accommodating the chucking member and the restriction member, the positioning chamber having a positioning chamber wall for restricting radial displacement of the chucking member, the chucking member being in contact with the positioning chamber wall, a bottom of the positioning chamber being opened with a second through hole for passing the output shaft therethrough.

4. The washing machine as claimed in claim 3, wherein the positioning chamber wall is extended gradually outward in a direction of disengagement from the engaging structure, and the restriction member is located above the chucking member.

5. The washing machine as claimed in claim 3, wherein the engaging structure further includes an elastic member for pushing the limiting member to achieve the engaging and mounting of the fastening member with the fastening groove.

6. The washing machine as claimed in claim 5, wherein the pulsator assembly further comprises an outer cover fixedly provided with the pulsator, the outer cover being covered outside the positioning chamber, the elastic member being located between the outer cover and the restriction member.

7. The washing machine as claimed in claim 6, wherein the restriction member includes a first restriction edge extending upward, and the elastic member is fitted over an outer side of the first restriction edge.

8. The washing machine as claimed in any one of claims 2 to 7, wherein the restriction member includes a housing chamber for housing the chucking member, the housing chamber is fitted around the outside of the output shaft, an opening for the chucking member to protrude is opened in a wall of the housing chamber, and the chucking member protrudes from the opening and contacts the wall of the housing chamber.

9. A washing machine as claimed in any one of claims 2 to 7 wherein the output shaft is provided with a circumferential slot for engagement with the retaining member.

10. A washing machine as claimed in any one of claims 1 to 7 wherein a constriction is provided on the output shaft to form the catch.