Inner barrel assembly and washing machine

Abstract

The invention discloses an inner barrel assembly and a washing machine. The inner barrel assembly comprises an inner barrel and an impeller installed at the bottom of the inner barrel. The impeller comprises an impeller main body which is rotatably arranged in the inner barrel and is relatively fixed with the barrel bottom of the inner barrel in the axial direction of the inner barrel; the stirring blade is mounted on the impeller main body in a manner of moving up and down relative to the impeller main body, the stirring blade is magnetic, and the lower side surface of the stirring blade and the bottom of the inner barrel are arranged at an interval; magnetic areas and non-magnetic areas which are staggered are arranged at the bottom of the inner barrel in the circumferential direction of the inner barrel; the impeller body rotates to drive the stirring blades to alternately pass through the magnetic area and the non-magnetic area, and the stirring blades move up and down under the action of magnetic force. According to the washing machine, the stirring blades can move up and down, clothes and water flow are stirred, meanwhile, the effect of rubbing the clothes is achieved, and the cleaning rate is increased; the stirring blades are driven by magnetic force to move up and down and do not make direct contact with the bottom of the inner barrel, and friction noise between the stirring blades and the bottom of the inner barrel in the rotating process is avoided.

Description

Technical Field

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

[0002] A washing machine is a convenient and fast washing tool that saves people a lot of time in daily washing. Existing washing machines are generally divided into drum washing machines and pulsator washing machines. In the pulsator washing machine, the washing water in the drum is stirred by the relative rotation of the pulsator and the washing drum, so that the clothes move in the water, and then the clothes and the drum wall rub in the water, and the purpose of decontamination and cleaning is achieved under the action of detergent.

[0003] In the current pulsator washing machines, the stirring blades on the pulsator are mostly integrally molded with the pulsator. During the washing process, the stirring blades rotate with the pulsator, so that the clothes are stirred by the forward and reverse rotation of the pulsator and the forward and reverse rotation of the water in the barrel to wash the clothes. In the pulsator washing machine using the above-mentioned structure pulsator, the stirring blades can only play the role of driving the water flow and the rotation of the clothes. If the washing force needs to be strengthened, it is generally necessary to increase the height of the stirring blades or increase the speed of the pulsator. However, since the water flow in the barrel is basically a rotational motion, and the multiple stirring blades on the pulsator are evenly distributed radially from the center to the outside, the intensity of the washing water flow generated by the stirring blades is always greater in the peripheral area of ​​the pulsator than in the area close to the center, and the force on the clothes is also greater in the peripheral area of ​​the pulsator. In this case, the clothes in the barrel will gather toward the center under the action of external force, which may increase the entanglement of the clothes. In addition, the higher the stirring blades or the faster the rotation speed of the pulsator, the greater the risk of clothes entanglement.

[0004] The prior art also proposes a solution of installing a circular rotating impeller on the impeller to replace the stirring blades. During the washing process, as the impeller rotates, the circular rotating impeller rotates with the impeller while rotating on its own driven by the water flow, thereby assisting in stirring the water flow and clothes and enhancing the washing effect. However, in the above solution, the washing water in the barrel still forms a rotating water flow, which cannot solve the problem of easy entanglement of clothes. It can be seen that the impeller structure in the existing impeller washing machine, while improving the washing rate of clothes, inevitably causes an increase in the risk of clothes entanglement, and the user experience is not good.

[0005] A Chinese patent application with application number 202010064731.8 discloses a impeller assembly for a washing machine, comprising an impeller, a mounting portion, disposed on the impeller; a water-dispelling blade, movably connected to the mounting portion, and on the upper surface of the impeller, capable of moving relative to the mounting portion; the water-dispelling blade has at least an initial position and an extreme position on the upper surface of the impeller; the initial position is the relative position between the water-dispelling blade and the mounting portion when the impeller is not rotating; the extreme position is the farthest distance that the water-dispelling blade can move along the plane where the impeller is located under the action of centrifugal force. However, the water-dispelling blade in the above scheme is subject to the action of centrifugal force, especially when the impeller has a high rotation speed, the water-dispelling blade moves suddenly, which may cause a lot of noise during the operation of the washing machine.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an inner barrel assembly and a washing machine. During the rotation of the impeller, the stirring blades of the impeller can rotate with the impeller and can also be driven by magnetic force to move up and down to rub the clothes, which is beneficial to improving the washing effect of the clothes. At the same time, the stirring blades do not directly contact the bottom of the inner barrel, avoiding friction noise.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] An inner barrel assembly comprises an inner barrel and a pulsator installed at the bottom of the inner barrel, wherein the pulsator comprises:

[0010] The impeller body is rotatably disposed in the inner barrel and relatively fixed to the barrel bottom of the inner barrel in the axial direction of the inner barrel;

[0011] A stirring blade is mounted on the impeller body so as to be movable up and down relative to the impeller body, the stirring blade is magnetic, and the lower surface of the stirring blade is spaced from the bottom of the inner barrel;

[0012] The bottom of the inner barrel has staggered magnetic areas and non-magnetic areas along the circumference of the inner barrel; the impeller body rotates to drive the stirring blade to alternately pass through the magnetic area and the non-magnetic area, and the stirring blade moves up and down under the action of magnetic force.

[0013] Furthermore, a first magnet is arranged at the bottom of the stirring blade, and a second magnet is arranged in the magnetic area of ​​the barrel bottom; the lower side of the first magnet and the upper side of the second magnet have the same magnetic properties;

[0014] The stirring blade rotates with the impeller body to above the second magnet, and the first magnet is subjected to the repulsive force of the second magnet, pushing the stirring blade to move upward; the stirring blade rotates with the impeller body to above the non-magnetic area, the repulsive force exerted on the first magnet disappears, and the stirring blade is reset downward by gravity.

[0015] Furthermore, the first magnet is embedded in the bottom wall of the stirring blade, and the first magnet is completely covered by the bottom wall of the stirring blade;

[0016] And / or, the second magnet is embedded in the bottom of the inner barrel, and the second magnet is completely covered by the bottom of the inner barrel.

[0017] Furthermore, a mounting hole which passes through from top to bottom is provided on the impeller body, and the stirring blade is limited to move up and down in the mounting hole; the circumferential side wall of the stirring blade is limitedly matched with the inner wall of the mounting hole to keep the lower surface of the stirring blade spaced apart from the bottom of the inner barrel.

[0018] Furthermore, the outer periphery of the mounting hole extends downward from the lower surface of the impeller body to form a guide portion, and the guide portion extends downward from the outer periphery of the mounting hole toward the inner side of the mounting hole at an angle;

[0019] The circumferential side wall of the stirring blade is at least partially inclined relative to the vertical direction and parallel to the inner wall of the guide part; the area where the circumferential side wall is inclined is in contact with the inner wall of the guide part to limit the lowest position of the stirring blade's downward movement.

[0020] Further, the circumferential side wall includes an inclined area close to the top of the stirring blade, and a vertical area formed by the lower edge of the inclined area extending vertically downward;

[0021] When the stirring blade moves downward to the lowest position, the inclined area fits against the inner wall of the guide portion for positioning, and the height of the connecting position of the inclined area and the vertical area is flush with the extended end of the guide portion.

[0022] Furthermore, a limiting portion is provided on the periphery of the bottom wall of the stirring blade, and the limiting portion protrudes in the horizontal direction relative to the bottom of the circumferential side wall of the stirring blade, and is used to cooperate with the extended end of the guide portion to prevent the stirring blade from moving upward and escaping from the mounting hole.

[0023] Furthermore, the stirring blade comprises:

[0024] An upper shell is limited to move up and down in the mounting hole, the upper part of the upper shell protrudes from the upper surface of the impeller body, and the lower side of the upper shell has an opening;

[0025] The lower shell is buckled into the lower opening of the upper shell and limited at the lower side of the impeller body. A first magnet is arranged on the lower shell to cooperate with the magnetic area at the bottom of the inner barrel to generate a magnetic force to drive the stirring blade to move up and down.

[0026] Furthermore, the lower shell includes a plate-like body and a connecting portion; the plate-like body is used to cover the lower opening of the upper shell, and the connecting portion is formed by the upper surface of the plate-like body protruding upward; the connecting portion is inserted into the interior of the upper shell from the lower opening of the upper shell, and is fixed with the upper shell by snapping.

[0027] A washing machine comprises the inner barrel assembly described above.

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

[0029] In the present invention, a stirring blade that can move up and down is provided on the impeller. The stirring blade can realize the up and down movement driven by magnetic force through its own magnetism and the magnetic area and non-magnetic area of ​​the bottom of the inner barrel. Then, when the impeller rotates as a whole, the stirring blade not only stirs the clothes and water flow with the rotation of the impeller body, but also can produce up and down movement to play the role of rubbing the clothes. In this way, the washing rate can be improved without increasing the intensity of the water flow, and there is no need to worry about increasing the risk of clothes entanglement. At the same time, the stirring blade can be driven contactlessly by the magnetic force, avoiding the friction noise between the stirring blade and the bottom of the inner barrel during the rotation of the impeller.

[0030] In the present invention, the first magnet and the second magnet are embedded in the stirring blade or the bottom of the inner barrel, which can prevent the risk of the magnet falling off and ensure the effective and stable up and down movement of the stirring blade as the impeller body rotates.

[0031] In the present invention, the guide portion and the circumferential side wall of the stirring blade are arranged as matching inclined structures, so as to limit the lowest position of the stirring blade's downward movement. The structure is simple and can effectively ensure that the lower surface of the stirring blade does not contact the bottom of the inner barrel, thereby ensuring that no friction noise is generated between the stirring blade and the bottom of the barrel.

[0032] The specific implementation modes of the present invention are further described in detail below in conjunction with 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 improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0034] Figure 1 is a schematic diagram of the structure of a stirring blade in an embodiment of the present invention;

[0035] Figure 2 is a structural exploded view of a stirring blade in an embodiment of the present invention;

[0036] Figure 3 1 is a schematic diagram of the lower structure of the impeller in an embodiment of the present invention;

[0037] Figure 4 is a structural exploded view of the inner barrel assembly in an embodiment of the present invention;

[0038] Figure 5 is a structural exploded view of an embodiment of the present invention when the stirring blade is located above the non-magnetic area;

[0039] Figure 6 is a cross-sectional view of the impeller when the stirring blade moves downward to the lowest position in the embodiment of the present invention;

[0040] Figure 7 is a structural exploded view of an embodiment of the present invention when the stirring blade is located above the magnetic region;

[0041] Figure 8 is a cross-sectional view of the impeller when the stirring blade moves upward to the highest position in the embodiment of the present invention;

[0042] Fig. 9 is a cross-sectional view of the inner barrel assembly when the stirring blade is located above the magnetic area in an embodiment of the present invention;

[0043] Fig.10 The present invention Fig. 9 The enlarged schematic diagram of point A in the middle;

[0044] In the figure: 100, inner barrel; 110, barrel bottom; 121, first extension wall; 122, second extension wall; 123, annular wall; 124, annular rib; 125, bottom wall; 131, magnetic area; 132, non-magnetic area; 133, second magnet; 200, impeller body; 201, annular reinforcement rib; 202, radial reinforcement rib; 203, folding edge; 204, mounting portion; 205, guide portion; 206, mounting hole; 300, stirring blade; 340, upper shell; 341, circumferential side wall; 3411, inclined area; 3412, vertical area; 342, slot; 350, lower shell; 351, plate-like body; 352, connecting portion; 353, claw; 354, limiting portion; 355, positioning portion; 360, first magnet.

[0045] 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 are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0046] 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.

[0047] In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] like Figures 1 to 10 As shown, an embodiment of the present invention provides an inner tub assembly and a washing machine including the inner tub assembly.

[0050] Specifically, the washing machine comprises a housing, and the inner barrel assembly is arranged inside the housing. The inner barrel assembly comprises an inner barrel 100 for placing clothes, and a pulsator rotatably mounted at the bottom of the inner barrel 100. The pulsator comprises a pulsator body 200 and stirring blades 300, wherein the stirring blades 300 protrude from the upper surface of the pulsator body 200 and can rotate synchronously with the pulsator body 200 to stir the washing water in the barrel.

[0051] During the washing process, water is introduced into the inner tub 100 to cover the clothes in the tub, and then the pulsator is controlled to rotate alternately forward and reverse, so that the stirring blades 300 are used to stir the washing water and clothes to achieve washing of the clothes.

[0052] However, in the above process, the stirring blade 300 rotates synchronously with the pulsator body 200, generating a rotating water flow in the tub, which makes the clothes tend to gather toward the center, and there is a risk of entanglement. If the rotation speed of the pulsator is increased in order to enhance the washing power and improve the cleaning rate, the risk of clothes entanglement will be further increased, which will affect the washing effect.

[0053] Embodiment 1

[0054] The present embodiment is used to solve the problem that the above-mentioned pulsator washing machine is prone to causing clothes to become tangled when increasing the washing force and improving the cleaning rate, and to provide an inner barrel assembly and a washing machine that can improve the cleaning effect of clothes without increasing the risk of clothes becoming tangled, and at the same time will not cause additional noise.

[0055] like Figures 1 to 10 As shown, the inner barrel assembly described in this embodiment includes an inner barrel 100, and a pulsator installed at the bottom of the inner barrel 100, and the pulsator includes a pulsator body 200, and a stirring blade 300 protruding from the upper surface of the pulsator body 200. Among them, the pulsator body 200 is rotatably arranged in the inner barrel 100, and is relatively fixed to the barrel bottom 110 of the inner barrel 100 in the axial direction of the inner barrel 100. The pulsator body 200 has a mounting portion 204 for connecting a pulsator shaft (not shown in the figure), and the pulsator shaft is connected to a driving motor, so that the pulsator body 200 can be driven to rotate by the driving motor.

[0056] The stirring blade 300 is mounted on the impeller body 200 and can move up and down relative to the impeller body 200. Specifically, during the washing process, the impeller body 200 rotates under the drive of the driving motor, and the stirring blade 300 rotates synchronously with the impeller body 200, which can stir the clothes and washing water in the barrel. At the same time, the stirring blade 300 can also produce an up and down movement along the axis of the inner barrel 100, and then the height of the stirring blade 300 protruding from the upper surface of the impeller body 200 changes during the washing process, which plays a role in rubbing the clothes. In this way, during the washing process, the stirring blade 300 moves up and down with the rotation of the impeller body 200, which not only plays a role in stirring the clothes and the water flow, but also plays a role in rubbing the clothes, thereby achieving the purpose of improving the washing rate without increasing the risk of clothes entanglement.

[0057] In order to drive the stirring blade 300 to move up and down, in a further solution of this embodiment, the stirring blade 300 is magnetic, and the bottom 110 of the inner barrel 100 has staggered magnetic areas 131 and non-magnetic areas 132 along the circumference of the inner barrel 100. During the washing process, the pulsator body 200 is driven to rotate, which can drive the stirring blade 300 to rotate accordingly, and then the stirring blade 300 moves around the inner barrel 100, alternately passing through the magnetic area 131 and the non-magnetic area 132, so that the stirring blade 300 is subjected to the action of the magnetic force to produce an up and down movement.

[0058] In the above scheme, the up and down movement of the stirring blade 300 is realized by magnetic drive, without the need for an additional driving device, with a simple structure and low production cost. At the same time, the magnetic force can be generated in a non-contact state, so that the lower surface of the stirring blade 300 can always be spaced apart from the bottom 110 of the inner barrel 100 during the washing process without affecting its up and down movement relative to the impeller body 200, thereby avoiding the friction noise generated by the contact and friction between the stirring blade 300 and the bottom 110 of the inner barrel 100. In addition, the movement direction of the stirring blade 300 relative to the impeller body 200 is parallel to the central axis of the inner barrel 100, and will not tilt, reducing the probability of the stirring blade 300 and the impeller body 200 clamping the clothes due to the relative movement.

[0059] In the specific scheme of this embodiment, a first magnet 360 is set at the bottom of the stirring blade 300, and a second magnet 133 is set in the magnetic area 131 of the barrel bottom 110. The lower side of the first magnet 360 and the upper side of the second magnet 133 have the same magnetism.

[0060] During the washing process, when the stirring blade 300 rotates with the impeller body 200 to the top of the second magnet 133, the first magnet 360 will be subject to the repulsive force of the second magnet 133 due to the mutual repulsion, thereby pushing the stirring blade 300 to move upward. When the stirring blade 300 rotates with the impeller body 200 to the top of the non-magnetic area 132, that is, when it leaves the top of the second magnet 133, the repulsive force on the first magnet 360 will disappear, and then the stirring blade 300 will move downward and reset due to the action of gravity.

[0061] Further, in this embodiment, the first magnet 360 is embedded in the bottom wall of the stirring blade 300 and is completely covered by the bottom wall of the stirring blade 300. Similarly, the second magnet 133 is embedded in the bottom 110 of the inner barrel 100 and is completely covered by the bottom 110 of the inner barrel 100.

[0062] In the detailed scheme of this embodiment, the stirring blade 300 includes an upper shell 340 and a lower shell 350, which are buckled to form a stirring blade 300 with a hollow interior, and the first magnet 360 is embedded in the lower shell 350. In this way, the weight of the stirring blade 300 can be reduced without changing the appearance of the stirring blade 300, ensuring that the repulsive force generated between the first magnet 360 and the second magnet 133 is sufficient to overcome the gravity of the stirring blade 300 and drive it to move upward. The lower shell 350 is made of plastic, and the first magnet 360 is embedded in the lower shell 350 during the injection molding process.

[0063] Similarly, the barrel bottom 110 of the inner barrel 100 is also made of plastic. During the injection molding process, a second magnet 133 is embedded inside the barrel bottom 110 so that the barrel bottom 110 forms staggered magnetic areas 131 and non-magnetic areas 132 along the circumferential direction.

[0064] In the above scheme, since the first magnet 360 and the second magnet 133 are arranged in an embedded manner, the problem of the first magnet 360 and the second magnet 133 falling off is effectively avoided, thereby ensuring the effectiveness and stability of the stirring blade 300 driven up and down by magnetic force.

[0065] In a preferred solution of the present embodiment, a plurality of stirring blades 300 are arranged at intervals along the circumference of the impeller body 200, and the number of stirring blades 300 is the same as the number of magnetic regions 131, that is, the number of second magnets 133. The stirring blades 300 and the second magnets 133 are evenly distributed along the circumference of the inner barrel 100, and the interval angle between two adjacent stirring blades 300 is equal to the interval angle between two adjacent second magnets 133. In this way, during the rotation of the impeller body 200, a plurality of stirring blades 300 can be located above the second magnet 133 or above the non-magnetic region 132 at the same time, thereby realizing the synchronous up and down movement of the plurality of stirring blades 300 relative to the impeller body 200.

[0066] Specifically, in this embodiment, three stirring blades 300 are provided, and the interval between two adjacent stirring blades 300 is 120°. Accordingly, three second magnets 133 are embedded in the barrel bottom 110, and the interval between adjacent second magnets 133 is also 120°.

[0067] In the above scheme, during the washing process, as the impeller body 200 rotates, the multiple stirring blades 300 move up and down synchronously, which can produce a rubbing effect with basically uniform strength on the clothes distributed at different positions in the barrel, which is conducive to ensuring a uniform washing rate.

[0068] As another preferred solution of this embodiment, the number of the second magnets can also be an integral multiple of the number of the stirring blades, and the stirring blades and the second magnets are evenly distributed along the circumference of the inner barrel. With the above structure, multiple stirring blades can also move up and down synchronously with the rotation of the impeller body, and when the impeller body uses the same rotation speed, the stirring blades move up and down more frequently, which has a stronger kneading effect on the clothes in the barrel.

[0069] In a further solution of this embodiment, a mounting hole 206 is provided on the impeller body 200, and the stirring blade 300 is limited to move up and down in the mounting hole 206. The circumferential side wall 341 of the stirring blade 300 is limited to cooperate with the inner wall of the mounting hole 206, so that the upper part of the stirring blade 300 always remains protruding from the upper surface of the impeller body 200, and the bottom surface of the stirring blade 300 is spaced from the barrel bottom 110 of the inner barrel 100.

[0070] In the above scheme, the circumferential side wall 341 of the stirring blade 300 cooperates with the inner wall limit of the mounting hole 206 to limit the lowest position of the downward movement of the stirring blade 300, thereby ensuring that the lower surface of the stirring blade 300 will never contact the bottom 110 of the inner barrel 100, thereby avoiding the friction between the stirring blade 300 and the bottom 110 during the rotation of the impeller body 200 and generating noise.

[0071] In this embodiment, the stirring blade 300 has a certain extension length along the radial direction of the impeller body 200, and the stirring force on the washing water and clothes is stronger. Correspondingly, the mounting hole 206 also extends a certain length along the radial direction of the impeller body 200, so as to match the overall structure of the stirring blade 300.

[0072] There is a certain distance between the end of the mounting hole 206 close to the periphery of the impeller body 200 and the periphery of the impeller body 200, and thus there is no structure that can move up and down relatively between the peripheral area of ​​the impeller body 200 and the bottom 110 of the inner barrel 100, which further reduces the risk of clothes being clamped by the impeller during the washing process, especially the risk of clothes being stuck between the impeller body 200 and the bottom 110, thereby avoiding damage to clothes during the washing process.

[0073] In a further solution of this embodiment, the outer periphery of the mounting hole 206 extends downward from the lower surface of the impeller body 200 to form a guide portion 205, and the guide portion 205 extends downward obliquely from the outer periphery of the mounting hole 206 toward the inner side of the mounting hole 206. The circumferential side wall 341 of the stirring blade 300 is at least partially inclined relative to the vertical direction, so as to be parallel to the inner wall of the guide portion 205. The lowest position of the downward movement of the stirring blade 300 can be limited by the region where the circumferential side wall 341 is inclined and fits with the inner wall of the guide portion 205.

[0074] Specifically, the guide portion 205 extends downwardly at an angle toward the inner side of the mounting hole 206, and the horizontal cross-sectional area of ​​the inner side of the guide portion 205 gradually decreases from top to bottom. The circumferential side wall 341 of the stirring blade 300 is partially arranged parallel to the inner wall of the guide portion 205, forming a structure similar to a cone, and the horizontal cross-sectional area of ​​the stirring blade 300 also gradually decreases from top to bottom within a certain height range. In this way, during the downward movement of the stirring blade 300, the area where the circumferential side wall 341 is inclined gradually approaches the inner wall of the guide portion 205 below, until it fits with the inner wall of the guide portion 205. At this time, the guide portion 205 can limit the stirring blade 300 from further descending, thereby achieving a limiting effect.

[0075] Furthermore, in this embodiment, the circumferential side wall 341 of the stirring blade 300 includes an inclined area 3411 near the top of the stirring blade 300, and a vertical area 3412 formed by vertically extending downward from the lower edge of the inclined area 3411. When the stirring blade 300 moves downward to the lowest position, the inclined area 3411 is fitted with the inner wall of the guide portion 205 for position limiting, and the height of the connecting position of the inclined area 3411 and the vertical area 3412 is flush with the extended end of the guide portion 205.

[0076] In the above scheme, the circumferential side wall 341 of the stirring blade 300 is limited by the inclined area 3411 and the guide part 205, thereby limiting the lowest position of the stirring blade 300 within the range of up and down movement. There is a vertical area 3412 below the inclined area 3411, that is, within the height range where the vertical area 3412 is located, the horizontal cross-sectional shape and area of ​​the stirring blade 300 are always consistent. When the stirring blade 300 is at the lowest position within the range of up and down movement, the connecting position of the inclined area 3411 and the vertical area 3412 is flush with the extended end of the guide part 205, so that during the up and down movement of the stirring blade 300, the extended end of the guide part 205, that is, the lower end of the guide part 205 is always located outside the vertical area 3412. By adopting the above structure, the vertical area 3412 of the circumferential side wall 341 and the lower end limit of the guide part 205 can be cooperated to limit the lateral movement of the stirring blade 300 relative to the impeller body 200, thereby ensuring that the movement direction of the stirring blade 300 relative to the impeller body 200 is parallel to the central axis of the impeller body 200.

[0077] In the preferred solution of this embodiment, the vertical area 3412 of the circumferential side wall 341 is interference fit with the lower end of the guide part 205. Specifically, within the height range of the vertical area 3412, the horizontal cross-sectional shape of the stirring blade 300 matches the shape of the through hole surrounded by the lower end of the guide part 205. During the up and down movement of the stirring blade 300, a certain gap is left between the surface of the vertical area 3412 and the lower end of the inner wall of the guide part 205, rather than direct contact. In this way, it is ensured that the stirring blade 300 can move up and down smoothly during the washing process without being subject to obvious friction resistance.

[0078] In a further solution of this embodiment, a limiting portion 354 is provided on the outer periphery of the bottom wall of the stirring blade 300, and the limiting portion 354 protrudes in the horizontal direction relative to the bottom of the circumferential side wall 341 of the stirring blade 300. The limiting portion 354 cooperates with the extended end of the guide portion 205 to prevent the stirring blade 300 from moving upward and escaping from the mounting hole 206.

[0079] With the above structure, when the stirring blade 300 rotates with the impeller body 200 to above the second magnet 133, the repulsive force generated between the first magnet 360 and the second magnet 133 pushes the stirring blade 300 upward until the upper surface of the limiting portion 354 abuts against the lower end of the guide portion 205, and the stirring blade 300 stops moving.

[0080] In a further solution of this embodiment, a mounting portion 204 for connecting the impeller shaft is arranged in the central area of ​​the lower surface of the impeller body 200 and is formed by protruding downward. The mounting portion 204 has a connecting hole with a lower opening, and the impeller shaft is inserted into the connecting hole and is connected to the impeller body 200 by transmission. The mounting portion 204 has a certain size along the radial direction of the impeller body 200, so that there is a large thickness between the side wall of the connecting hole and the outer peripheral wall of the mounting portion 204, which can ensure the overall strength of the mounting portion 204, and the structure is more stable when the impeller body 200 is driven to rotate by the impeller shaft.

[0081] The main part of the impeller body 200 is a curved plate-like structure. To ensure the strength of the impeller body 200, a downwardly protruding reinforcement structure is also provided on the lower surface of the impeller body 200. Specifically, the reinforcement structure includes an annular reinforcement rib 201 extending in the circumferential direction, at least two annular reinforcement ribs 201 are arranged at intervals in the radial direction, and are interrupted by the guide portion 205 in the circumferential direction, and the two ends of the annular reinforcement rib 201 are respectively connected to the outer peripheral wall of the guide portion 205 parallel to the radial direction.

[0082] The reinforcement structure further includes radial reinforcement ribs 202. Specifically, the radial reinforcement ribs 202 are arranged corresponding to each guide portion 205, extending from the outer peripheral wall of the mounting portion 204 along the radial direction of the impeller body 200, and the extension end is connected to the outer peripheral wall of the guide portion 205 near one end of the mounting portion 204.

[0083] In the above scheme, the overall structure of the impeller body 200 is enhanced by the provision of the annular reinforcing ribs 201 and the radial reinforcing ribs 202, especially avoiding the problem that the area on the impeller body 200 located at the periphery of the mounting hole 206 is easily damaged when subjected to impact force.

[0084] In a further solution of this embodiment, the upper shell 340 of the stirring blade 300 is limited to move up and down in the mounting hole 206, the upper part of the upper shell 340 protrudes from the upper surface of the impeller body 200, and the lower side of the upper shell 340 has an opening. The lower shell 350 of the stirring blade 300 is buckled at the lower opening of the upper shell 340 and is limited to the lower side of the impeller body 200.

[0085] Specifically, the circumferential side wall 341 of the stirring blade 300 is formed on the upper shell 340, and the limit portion 354 is provided on the lower shell 350. More specifically, the upper shell 340 has a raised portion forming a raised curved surface on the upper portion of the stirring blade 300, and an extension portion extending downward from the lower edge of the raised portion to form the circumferential side wall 341. When the stirring blade 300 moves to the lowest position, the junction of the raised portion and the extension portion is flush with the upper surface of the impeller body 200.

[0086] Through the above structure, during the rotation of the impeller body 200, the protrusion will not drop to the inside of the mounting hole 206, causing the gap between the stirring blade 300 and the mounting hole 206 to increase significantly, thereby reducing the probability of clothing getting stuck in the gap between the stirring blade 300 and the mounting hole 206.

[0087] In a further solution of this embodiment, the lower shell 350 includes a plate-shaped body 351 and a connecting portion 352. The plate-shaped body 351 is used to cover the lower opening of the upper shell 340, and the connecting portion 352 is formed by the upper surface of the plate-shaped body 351 protruding upward. The connecting portion 352 is inserted into the upper shell 340 from the lower opening of the upper shell 340 and is fixed to the upper shell 340 by clamping.

[0088] Specifically, the plate-shaped body 351 covers the lower opening of the upper shell 340, and the outer periphery of the plate-shaped body 351 protrudes from the outer periphery of the lower opening of the upper shell 340, forming a limit portion 354 for limiting the position with the guide portion 205. The first magnet 360 is embedded in the middle area of ​​the plate-shaped body 351. When the upper shell 340 and the lower shell 350 are buckled, the area where the first magnet 360 is located is surrounded by the lower opening of the upper shell 340. On the plate-shaped body 351, the area where the first magnet 360 is located has a greater thickness than the area around the first magnet 360.

[0089] More specifically, the connection part 352 is arranged in an area close to the outer periphery of the plate-shaped body 351, and a claw 353 is arranged on it. The extension part of the upper shell 340, that is, the circumferential side wall 341 of the stirring blade 300, is correspondingly provided with a slot 342, and the connection part 352 is inserted into the interior of the upper shell 340 from the lower side opening of the upper shell 340, and the claw 353 on it is clamped into the slot 342 on the upper shell 340, thereby realizing the clamping and fixing of the upper shell 340 and the lower shell 350.

[0090] In the detailed scheme of this embodiment, a plurality of connection parts 352 with claws 353 are arranged at intervals along the outer circumference direction of the plate-like main body 351, and the same number of slots 342 are correspondingly arranged on the upper shell 340. The connection stability between the upper shell 340 and the lower shell 350 is improved by the clamping and fixing of multiple groups of claws 353 and slots 342.

[0091] In the preferred solution of this embodiment, a positioning portion 355 protruding upward is further provided on the plate-like body 351. The positioning portion 355 extends along the outer peripheral direction of the plate-like body 351 and is provided between two adjacent connecting portions 352. The positioning portion 355 has a protruding structure on its surface facing outward. When the upper shell 340 and the lower shell 350 are buckled, the positioning portion 355 and the connecting portion 352 are inserted from the upper opening of the upper shell 340 into the interior of the upper shell 340. At the same time, the protruding structure on the positioning portion 355 contacts the inner surface of the circumferential side wall 341, which plays a role of auxiliary positioning, and helps the claw 353 on the connecting portion 352 to accurately snap into the slot 342.

[0092] When assembling the inner barrel assembly of this embodiment, the impeller is assembled first. Specifically, the upper shell 340 of the stirring blade 300 is first installed on the impeller body 200 through the mounting hole 206 from the upper side of the impeller body 200, and then the lower shell 350 is buckled with the upper shell 340 from the lower side of the impeller body 200. The first magnet 360 has been pre-embedded in the lower shell 350 during the injection molding process, and no additional assembly process is required.

[0093] After the impeller is assembled, it can be installed from top to bottom on the barrel bottom 110 of the inner barrel 100 and connected to the impeller shaft passing through the barrel bottom 110. Finally, the barrel wall of the inner barrel 100 is connected to the barrel bottom 110, and the assembly of the inner barrel assembly is completed.

[0094] The inner barrel assembly of this embodiment is applied to a washing machine. During the washing process, the impeller body 200 is driven by a driving motor to rotate alternately forward and reverse. During the rotation of the impeller body 200, the stirring blade 300 moves circumferentially along the barrel bottom 110 along with the rotation of the impeller body 200, and the lower side surface of the stirring blade 300 maintains a certain distance from the barrel bottom 110.

[0095] See also Figure 5 and Figure 6 When the stirring blade 300 is located above the non-magnetic area 132 of the barrel bottom 110, the stirring blade 300 is kept at the lowest position due to the lack of magnetic force. When the stirring blade 300 rotates with the impeller body 200 to the top of the magnetic area 131 where the second magnet 133 is disposed, see Figures 7 to 10 , a repulsive force is generated between the first magnet 360 and the second magnet 133, which first pushes the stirring blade 300 to move upward relative to the impeller body 200. When the stirring blade 300 further rotates with the impeller body 200 and completely passes above the magnetic area 131 and enters above the non-magnetic area 132, the repulsive force generated by the magnetic effect disappears, and the stirring blade 300 moves downward under the action of gravity and returns to Figure 5 and Figure 6 Status shown.

[0096] In this embodiment, the impeller at the bottom of the inner barrel 100 has a stirring blade 300 that can move up and down. During the washing process, the stirring blade 300 cooperates with the staggered magnetic areas 131 and non-magnetic areas 132 on the barrel bottom 110, and can move up and down with the rotation of the impeller body 200. In this way, the stirring blade 300 can rotate with the impeller body 200 to stir the clothes and water flow, and can also rub the clothes by moving up and down, which is beneficial to improve the washing rate without increasing the risk of additional clothes entanglement. At the same time, the stirring blade 300 is driven to move up and down by magnetic force, and there is no need for the stirring blade 300 to contact the barrel bottom 110 below, which avoids the friction noise between the stirring blade 300 and the barrel bottom 110 during the rotation of the impeller body 200, and the user experience is better.

[0097] Embodiment 2

[0098] like Figures 1 to 10 As shown, this embodiment is a further limitation of the above-mentioned embodiment 1, the barrel bottom 110 of the inner barrel 100 has a concave mounting groove for mounting the impeller. The magnetic area 131 and the non-magnetic area 132 are staggeredly arranged on the bottom wall 125 of the mounting groove along the circumference of the inner barrel 100.

[0099] Specifically, the installation groove has a circular bottom wall 125 , and the second magnet 133 is embedded in the barrel bottom 110 at a position below the bottom wall 125 of the installation groove.

[0100] Furthermore, in this embodiment, the side circumferential wall of the mounting groove includes a first extension wall 121 extending downward from the upper side opening of the mounting groove, an annular wall 123 formed by the lower end of the first extension wall 121 extending horizontally toward the axis of the inner barrel 100, and a second extension wall 122 extending downward from the inner periphery of the annular wall 123, and the second extension wall 122 is connected to the bottom wall 125 of the mounting groove.

[0101] Specifically, the first extension wall 121 extends vertically downward, and the second extension wall 122 extends obliquely downward and gradually approaches the axis of the inner barrel 100. The second extension wall 122 is connected to the bottom wall 125 of the mounting groove through a rounded transition.

[0102] In this embodiment, the inner periphery of the annular wall 123 has an annular rib 124 that protrudes upward and surrounds the inner periphery. The outer periphery of the impeller body 200 has a folded edge 203 that extends downward. The vertical downward projection of the folded edge 203 falls on the annular wall 123 and is located between the first extension wall 121 and the outer peripheral wall of the annular rib 124. For more details, see Fig.10 As shown, the outer peripheral side of the folded edge 203 is spaced apart from the first extension wall 121 , and the folded edge 203 and the annular rib 124 are staggered up and down.

[0103] Through the above structure, a multiple-bend gap is formed between the outer periphery of the impeller body 200 and the side wall of the installation groove, which can further avoid the problem of clothes being clamped between the impeller body 200 and the barrel bottom 110.

[0104] In the preferred solution of this embodiment, one end of the guide portion 205 close to the outer periphery of the pulsator body 200 is located on the inner periphery of the second extension wall 122, and the lower end of the guide portion 205 is lower than the height of the annular wall 123. In this way, through the cooperation of the folded edge 203, the annular rib 124 and the guide portion 205, the number of bending times of the gap between the outer peripheral area of ​​the pulsator body 200 and the side peripheral wall of the mounting groove is further increased, which ensures that the clothes will not be clamped during the washing process to the greatest extent.

[0105] In this embodiment, the outer periphery of the impeller body 200 cooperates with the side wall structure of the mounting groove on the barrel bottom 110 to form a multiple-bend gap structure, which can prevent clothes from being stuck between the impeller body 200 and the barrel bottom 110, effectively preventing clothes from being clamped by the impeller body 200 during the washing process, and protecting the clothes from being damaged.

[0106] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. An inner barrel assembly, comprising an inner barrel and a pulsator installed at the bottom of the inner barrel, characterized in that: The pulsator comprises: The impeller body is rotatably disposed in the inner barrel and relatively fixed to the barrel bottom of the inner barrel in the axial direction of the inner barrel; A stirring blade is mounted on the impeller body so as to be movable up and down relative to the impeller body, the stirring blade is magnetic, and the lower surface of the stirring blade is spaced from the bottom of the inner barrel; The bottom of the inner barrel has staggered magnetic areas and non-magnetic areas along the circumference of the inner barrel; the impeller body rotates to drive the stirring blade to alternately pass through the magnetic area and the non-magnetic area, and the stirring blade moves up and down under the action of magnetic force.

2. The inner barrel assembly according to claim 1, characterized in that: A first magnet is arranged at the bottom of the stirring blade, and a second magnet is arranged at the magnetic area of ​​the barrel bottom; the lower side of the first magnet and the upper side of the second magnet have the same magnetic properties; The stirring blade rotates with the impeller body to above the second magnet, and the first magnet is subjected to the repulsive force of the second magnet, pushing the stirring blade to move upward; the stirring blade rotates with the impeller body to above the non-magnetic area, the repulsive force exerted on the first magnet disappears, and the stirring blade is reset downward by gravity.

3. The inner barrel assembly according to claim 2, characterized in that: The first magnet is embedded in the bottom wall of the stirring blade, and the first magnet is completely covered by the bottom wall of the stirring blade; And / or, the second magnet is embedded in the bottom of the inner barrel, and the second magnet is completely covered by the bottom of the inner barrel.

4. The inner barrel assembly according to any one of claims 1 to 3, characterized in that: The impeller body is provided with an installation hole which passes through from top to bottom, and the stirring blade is limited to move up and down in the installation hole; the circumferential side wall of the stirring blade is limitedly matched with the inner wall of the installation hole to keep the lower side surface of the stirring blade spaced from the bottom of the inner barrel.

5. The inner barrel assembly according to claim 4, characterized in that: The outer periphery of the mounting hole extends downward from the lower surface of the impeller body to form a guide portion, and the guide portion extends downward from the outer periphery of the mounting hole toward the inner side of the mounting hole in an inclined manner; The circumferential side wall of the stirring blade is at least partially inclined relative to the vertical direction and parallel to the inner wall of the guide part; the area where the circumferential side wall is inclined is in contact with the inner wall of the guide part to limit the lowest position of the stirring blade's downward movement.

6. The inner barrel assembly according to claim 5, characterized in that: The circumferential side wall includes an inclined area close to the top of the stirring blade, and a vertical area formed by the lower edge of the inclined area extending vertically downward; When the stirring blade moves downward to the lowest position, the inclined area fits against the inner wall of the guide portion for positioning, and the height of the connecting position of the inclined area and the vertical area is flush with the extended end of the guide portion.

7. The inner barrel assembly according to claim 5, characterized in that: A limiting portion is provided on the periphery of the bottom wall of the stirring blade, and the limiting portion protrudes in the horizontal direction relative to the bottom of the circumferential side wall of the stirring blade, and is used to cooperate with the extended end of the guide portion to prevent the stirring blade from moving upward and escaping from the mounting hole.

8. The inner barrel assembly according to claim 4, characterized in that: The stirring blade comprises: An upper shell is limited to move up and down in the mounting hole, the upper part of the upper shell protrudes from the upper surface of the impeller body, and the lower side of the upper shell has an opening; The lower shell is buckled into the lower opening of the upper shell and limited at the lower side of the impeller body. A first magnet is arranged on the lower shell to cooperate with the magnetic area at the bottom of the inner barrel to generate a magnetic force to drive the stirring blade to move up and down.

9. The inner barrel assembly according to claim 8, characterized in that: The lower shell includes a plate-like body and a connecting portion; the plate-like body is used to cover the lower opening of the upper shell, and the connecting portion is formed by the upper surface of the plate-like body protruding upward; the connecting portion is inserted into the interior of the upper shell from the lower opening of the upper shell, and is fixed with the upper shell by snapping.

10. A washing machine, characterized in that: Comprising the inner barrel assembly described in any one of claims 1-9.

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