Inner barrel assembly and washing machine

Abstract

The invention belongs to the technical field of washing equipment, and 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, and the impeller comprises an impeller body fixedly installed relative to the height of the barrel bottom of the inner barrel; the stirring blade is mounted on the impeller main body and can move up and down in the axial direction of the inner barrel relative to the impeller main body; in an area below the circumference where the stirring blades are located, high-low staggered supporting surfaces are formed at the bottom of the inner barrel in the circumferential direction of the inner barrel; the impeller main body rotates to drive the stirring blades to move up and down along the supporting surface. According to the washing machine, the stirring blades can move up and down along with rotation of the impeller body, the effect of stirring clothes and water flow is achieved, the effect of rubbing the clothes is also achieved, the cleaning rate is better improved, and the increase of the clothes winding risk is avoided; the up-and-down movement of the stirring blades is realized by matching with the high-low staggered supporting surfaces at the bottom of the inner barrel, an additional driving device is not needed, the structure is simple, and the production cost is low.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing equipment, 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 under the drive of the water flow, thereby playing a role in assisting the stirring of the water flow and the 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.

[0005] It can be seen that the pulsator structure in the existing pulsator washing machine, while improving the cleaning rate of clothes, inevitably causes an increase in the risk of clothes entanglement, and a poor user experience.

[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. Through the cooperation between the bottom of the inner barrel and the impeller, the stirring blades of the impeller can rotate with the impeller during the rotation of the impeller and can also generate up and down motion to rub the clothes, which is beneficial to improving the washing effect of the clothes without increasing the risk of clothes being entangled.

[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 fixedly installed relative to the bottom of the inner barrel;

[0011] The stirring blade is installed on the impeller body and can move up and down along the axis of the inner barrel relative to the impeller body;

[0012] In the area below the circumference of the stirring blade, the bottom of the inner barrel forms a high and low staggered supporting surface along the circumference of the inner barrel; the impeller body rotates to drive the stirring blade to move up and down along the supporting surface.

[0013] Furthermore, 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 upper part of the stirring blade protrudes from the upper surface of the impeller body, and the lower part of the stirring blade is lower than the lower surface of the impeller body, and contacts and cooperates with the supporting surface below to move accordingly;

[0014] Preferably, the stirring blade is interference fit with the mounting hole.

[0015] Further, the stirring blade comprises a shell and a roller, the shell has a mounting cavity with an open lower side, the roller is rotatably mounted in the mounting cavity, and the lowest position of the roller is lower than the lower opening of the mounting cavity;

[0016] The shell can be movably installed in the installation hole up and down, and when the impeller body rotates, the roller contacts the support surface and rolls along the support surface, driving the shell to move up and down relative to the impeller body.

[0017] Furthermore, the shell extends radially along the impeller body to a certain length, and the stirring blade also includes a rotating shaft extending radially; the roller is installed on the rotating shaft and can roll around the axis of the rotating shaft.

[0018] Furthermore, a mounting plate for connecting the rotating shaft is arranged in the mounting cavity; the mounting plate is arranged perpendicular to the length direction of the housing, and extends downward from the top of the inner wall of the mounting cavity, and the extended end of the mounting plate is lower than the lower opening of the mounting cavity;

[0019] A mounting plate is respectively arranged near the two ends of the shell, and the mounting plate is spaced apart from the end of the shell; the two ends of the rotating shaft are respectively connected to one of the mounting plates, and the roller is installed in the spacing area between the two mounting plates.

[0020] Furthermore, the outer periphery of the mounting hole extends downward from the lower surface of the impeller body to form a guide portion;

[0021] The side wall of the shell partially extends downward to be flush with the extended end of the mounting plate, forming a connecting plate respectively connected to the two mounting plates; the lower edges of the connecting plates on both sides have a limiting portion extending horizontally in the opposite direction, which is used to cooperate with the extended end of the guide portion to prevent the shell from moving upward and escaping from the mounting hole.

[0022] Furthermore, the bottom of the barrel is provided with convex ribs extending in the circumferential direction, and at least two convex ribs are provided at intervals along the radial direction of the bottom of the barrel; the roller contacts the top surface of the convex rib and rolls along the top surface of the convex rib.

[0023] Furthermore, the barrel bottom is provided with a plurality of bosses at intervals along the circumferential direction, and the convex ribs extend along the circumferential direction of the barrel bottom between two adjacent bosses; the protrusion height of the boss is higher than the protrusion height of the ribs, and the bosses and the ribs cooperate to form the staggered support surface;

[0024] Preferably, a plurality of stirring blades are arranged at circumferential intervals along the impeller body, and the number of stirring blades is the same as the number of bosses; the spacing angle between two adjacent stirring blades is equal to the spacing angle between two adjacent bosses, and the rotation of the impeller body can drive a plurality of stirring blades to move up and down synchronously.

[0025] Furthermore, the bottom of the inner barrel has a concave mounting groove for mounting the impeller; the supporting surface is formed on the bottom wall of the mounting groove;

[0026] The side peripheral wall of the mounting groove includes a first extension wall extending downward from the upper side opening of the mounting groove, an annular wall extending horizontally from the lower end of the first extension wall to the inner barrel axis, and a second extension wall extending downward from the inner periphery of the annular wall, wherein the second extension wall is connected to the bottom wall of the mounting groove; the inner periphery of the annular wall has an annular rib protruding upward and surrounding a circle;

[0027] The outer periphery of the impeller body has a folded edge extending downward; the downward projection of the folded edge falls on the annular wall and is located between the first extension wall and the outer peripheral wall of the annular rib.

[0028] A washing machine comprises the inner barrel assembly described above.

[0029] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0030] In the present invention, a stirring blade that can move up and down is provided on the impeller, and by cooperating with the support surface of the inner barrel bottom that is staggered along the circumferential direction, the impeller can rotate as a whole, and the stirring blade can not only stir the clothes and water flow with the impeller body, but also move up and down along the support surface to rub the clothes. In this way, the washing rate can be improved without increasing the water flow intensity, and there is no need to worry about increasing the risk of clothes entanglement. At the same time, the up and down movement of the stirring blade does not require an additional driving device, the structure is simple, and the production cost is low.

[0031] In the present invention, the stirring blades are matched and installed on the impeller body through the installation holes, and there is no structure that can move up and down relatively between the outer peripheral part of the impeller and the bottom of the inner barrel, which reduces the risk of clothes getting stuck between the impeller and the bottom of the barrel during the washing process and avoids damage to the clothes.

[0032] In the present invention, the stirring blade is provided with a roller, so that the stirring blade and the supporting surface move in a rolling manner, reducing the resistance to the rotation of the impeller caused by the friction contact between the stirring blade and the supporting surface. The roller is supported to roll by convex ribs arranged at intervals, reducing the contact area between the roller and the supporting surface, further reducing the friction force, and making the rotation of the impeller smoother.

[0033] 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

[0034] 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:

[0035] Figure 1 is a schematic diagram of the structure of a stirring blade in an embodiment of the present invention;

[0036] Figure 2 is a schematic structural diagram of a stirring blade from another perspective in an embodiment of the present invention;

[0037] Figure 3 is a structural exploded view of a stirring blade in an embodiment of the present invention;

[0038] Figure 4 1 is a schematic diagram of the lower structure of the impeller in an embodiment of the present invention;

[0039] Figure 5is a schematic structural diagram of an inner barrel assembly in an embodiment of the present invention cut through its axis;

[0040] Figure 6 is a structural exploded view of an embodiment of the present invention when the stirring blade is located above the convex rib;

[0041] Figure 7 is a cross-sectional view of the inner barrel assembly when the stirring blade is located above the rib in the embodiment of the present invention;

[0042] Figure 8 The present invention Figure 7 The enlarged schematic diagram of point A in the middle;

[0043] Fig. 9 is a structural exploded view of an embodiment of the present invention when the stirring blade is located above the boss;

[0044] Fig.10 It is a cross-sectional view of the inner barrel assembly when the stirring blade is located above the boss in the embodiment of the present invention.

[0045] In the figure: 100, inner barrel; 110, barrel bottom; 111, convex rib; 112, boss; 121, first extension wall; 122, second extension wall; 123, annular wall; 124, annular rib; 125, bottom wall; 200, impeller body; 201, annular reinforcement rib; 202, radial reinforcement rib; 203, folded edge; 204, mounting portion; 205, guide portion; 206, mounting hole; 300, stirring blade; 310, shell; 311, mounting plate; 3111, through hole; 312, connecting plate; 313, limit portion; 320, roller; 330, rotating shaft.

[0046] 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

[0047] 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.

[0048] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0049] 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] Embodiment 1

[0055] 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 drum assembly and a washing machine that can improve the cleaning effect of clothes without increasing the risk of clothes becoming tangled.

[0056] 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, wherein the pulsator includes a pulsator body 200 and a stirring blade 300 protruding from the upper surface of the pulsator body 200. The pulsator body 200 is fixedly installed at the bottom of the inner barrel 100 relative to the barrel bottom 110 of the inner barrel 100, and 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.

[0057] The stirring blade 300 is mounted on the impeller body 200 and can move up and down along the axis of the inner barrel 100 relative to the impeller body 200. 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 up and down movement, and then the height of the stirring blade 300 protruding from the upper surface of the impeller body 200 can change 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.

[0058] Furthermore, in order to drive the stirring blade 300 to move up and down, the bottom 110 of the inner tub 100 is provided with a staggered support surface along the circumference of the inner tub 100 in the area below the circumference of the stirring blade 300. 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 tub 100 and moves up and down along the support surface.

[0059] In the above scheme, the up and down movement of the stirring blade 300 is achieved by cooperating with the staggered support surface of the bottom 110 of the inner barrel 100, without the need for an additional driving device, with a simple structure and low production cost. At the same time, 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 relative movement between the stirring blade 300 and the impeller body 200 clamping the clothes.

[0060] 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 upper part of the stirring blade 300 always remains protruding from the upper surface of the impeller body 200, and the lower part of the stirring blade 300 always remains lower than the lower surface of the impeller body 200, so as to contact and cooperate with the supporting surface on the bottom 110 of the barrel below and move accordingly.

[0061] In the above scheme, there is a certain interval between the mounting hole 206 and the periphery of the impeller body 200, and thus there is no structure that can move relatively up and down 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.

[0062] In the preferred solution of this embodiment, the stirring blade 300 is interference fit with the mounting hole 206. Specifically, the cross-sectional shape of the stirring blade 300 along the horizontal direction matches the shape of the mounting hole 206, and the stirring blade 300 is installed in the mounting hole 206, with a certain gap between its periphery and the mounting hole 206, rather than direct contact. In this way, it is ensured that the stirring blade 300 can move up and down smoothly in the mounting hole 206 during the washing process without being subject to obvious friction resistance.

[0063] In a further solution of this embodiment, the stirring blade 300 includes a shell 310 and a roller 320. The shell 310 has a mounting cavity with an opening at the bottom. The roller 320 can be rotatably mounted in the mounting cavity. The rotation axis of the roller 320 is parallel to the radial direction of the impeller body 200. The lowest position of the roller 320 is lower than the lower opening of the mounting cavity. The shell 310 can be movably mounted in the mounting hole 206 up and down, and the roller 320 and the shell 310 are relatively fixed in the up and down directions. When the impeller body 200 rotates, the roller 320 contacts the support surface and rolls along the support surface, thereby driving the shell 310 to move up and down relative to the impeller body 200.

[0064] In the above scheme, a roller 320 is set at the bottom of the stirring blade 300. During the rotation of the impeller body 200, the stirring blade 300 and the supporting surface of the barrel bottom 110 move in a rolling manner through the roller 320, which effectively reduces the friction generated when the stirring blade 300 moves along the supporting surface, thereby reducing its resistance to the rotation of the impeller body 200.

[0065] Specifically, the housing 310 extends along the radial direction of the pulsator body 200 to a certain length, so that the stirring blade 300 is arranged along the radial direction of the pulsator body 200 as a whole, and the stirring force on the washing water and clothes is stronger. The stirring blade 300 also includes a rotating shaft 330 extending along the radial direction of the pulsator body 200, and the roller 320 is installed on the rotating shaft 330 and can roll around the axis of the rotating shaft 330.

[0066] In detail, in the stirring blade 300 described in this embodiment, the roller 320 is installed in the installation cavity inside the housing 310 through the rotating shaft 330. The housing 310 is provided with a through hole 3111, and the end of the rotating shaft 330 is inserted into the through hole 3111, thereby connecting with the housing 310.

[0067] As a specific implementation, the roller 320 is fixedly connected to the rotating shaft 330, and the rotating shaft 330 is rotatably inserted in the through hole 3111. When the impeller body 200 rotates, the housing 310 rotates with the impeller body 200, and the whole formed by the roller 320 and the rotating shaft 330 rolls synchronously and moves up and down along the support surface.

[0068] As another specific embodiment, the rotating shaft 330 is fixedly inserted in the through hole 3111, and the roller 320 is rotatably mounted on the rotating shaft 330. When the impeller body 200 rotates, the housing 310 rotates with the impeller body 200, and the roller 320 rolls around the rotating shaft 330, thereby generating an up and down movement along the supporting surface.

[0069] More specifically, in this embodiment, the mounting cavity is provided with a mounting plate 311 for connecting the rotating shaft 330. The mounting plate 311 is arranged perpendicular to the length direction of the housing 310, extending downward from the top of the inner wall of the mounting cavity, and the extending end of the mounting plate 311 is lower than the lower opening of the mounting cavity.

[0070] A mounting plate 311 is disposed near both ends of the housing 310, and the mounting plate 311 is spaced apart from the ends of the housing 310. The left end of the rotating shaft 330 is connected to the mounting plate 311 near the left end of the housing 310, and the right end of the rotating shaft 330 is connected to the mounting plate 311 near the right end of the housing 310. The roller 320 is mounted in the spaced area between the two mounting plates 311.

[0071] In detail, a through hole 3111 for inserting the end of the rotating shaft 330 is provided in a region of the mounting plate 311 that is lower than the open lower side of the housing 310 .

[0072] Preferably, removable limiting sleeves are provided at both ends of the rotating shaft 330 to prevent the rotating shaft 330 from coming out of the through hole 3111. As a specific solution, the through hole 3111 is a circular hole, and the limiting sleeve has an elliptical cross section, and the major axis of the elliptical cross section is larger than the diameter of the through hole 3111, thereby preventing the end of the rotating shaft 330 from coming out of the through hole 3111.

[0073] In another solution of this embodiment, the rotating shaft may not be provided, but raised rotating parts may be provided at both ends of the roller along the radial direction of the impeller body. The rotating parts may be rotatably inserted into the through holes on the shell, and the roller may roll relative to the shell.

[0074] 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. A portion of the side wall of the housing 310, specifically the area between the two mounting plates 311, extends downward to be flush with the extended ends of the mounting plates 311, forming a connecting plate 312 connected to the two mounting plates 311 respectively. Both sides of the housing 310 have connecting plates 312, and the lower edges of the connecting plates 312 on both sides have horizontal and relatively back-extending limiting portions 313, which are used to cooperate with the extended ends of the guide portion 205 to prevent the housing 310 from moving upward and escaping from the mounting hole 206.

[0075] Specifically, the limiting portion 313 is a flange structure formed by turning the lower edge of the connecting plate 312 outward, and extends from the mounting plate 311 at one end of the housing 310 to the mounting plate 311 at the other end. The limiting portion 313 has a long radial length along the impeller body 200, which can achieve a more effective limiting effect and prevent the housing 310 from accidentally falling out of the mounting hole 206 when shaking due to a gap between the housing 310 and the mounting hole 206.

[0076] Preferably, the shell 310 has a raised portion forming a raised curved surface at the top of the stirring blade 300, and an extension portion extending downward from the lower edge of the raised portion to form a side wall of the shell 310. The size of the shell 310 satisfies: when the stirring blade 300 moves as a whole along the supporting surface below 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; when the stirring blade 300 moves to the highest position along the supporting surface, the lower edge of the extension portion (that is, the lower opening of the mounting cavity) is not higher than the upper surface of the impeller body 200, and there is a gap between the upper surface of the limiting portion 313 and the lower end of the guide portion 205.

[0077] With the above-mentioned size matching, during the rotation of the impeller body 200, on the one hand, the small gap reserved by the interference fit is always maintained between the shell 310 and the mounting hole 206, and the protrusion will not drop to the inside of the mounting hole 206, causing the gap to increase and the clothes to be stuck, nor will the lower side of the shell 310 rise to a level higher than the mounting hole 206 and clamp the clothes when the shell 310 drops again. On the other hand, when the rotation speed of the impeller body 200 is not too fast, the roller 320 can always maintain contact with the support surface of the barrel bottom 110, and at this time, the limit part 313 is always not in contact with the guide part 205, avoiding the problem of damage caused by the collision between the two.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] In a further solution of this embodiment, the barrel bottom 110 is provided with ribs 111 extending in the circumferential direction, and at least two ribs 111 are provided at intervals along the radial direction of the barrel bottom 110. The roller 320 contacts the top surface of the rib 111 and rolls along the top surface of the rib 111.

[0083] Specifically, two convex ribs 111 are arranged at intervals along the radial direction of the barrel bottom 110, and the interval between the two convex ribs 111 is smaller than the radial length of the roller 320 along the barrel bottom 110, so as to ensure that the roller 320 can contact the top surfaces of the two convex ribs 111 at the same time. Preferably, the interval between the positions where the two convex ribs 111 meet the roller 320 is greater than or equal to half the length of the roller 320, so as to ensure stable support for the roller 320 and prevent the roller 320 from tilting.

[0084] In the above solution, the roller 320 is supported by the rib 111 to roll, that is, the roller 320 contacts the support surface at intervals along its length direction, rather than continuously. In this way, the contact area between the roller 320 and the lower support surface is reduced, and the friction force can be further reduced, so that the rotation of the impeller body 200 is smoother.

[0085] Furthermore, the barrel bottom 110 is provided with a plurality of bosses 112 at intervals along the circumference, and the ribs 111 extend along the circumference of the barrel bottom 110 between two adjacent bosses 112. The boss 112 has a higher height than the ribs 111, so that the bosses 112 cooperate with the ribs 111 to form the staggered support surface.

[0086] Preferably, the top surface of the rib 111 at the end connected to the boss 112 rises along the curved surface, thereby forming a smooth transition between the rib 111 and the boss 112, ensuring that the roller 320 rolls smoothly along the rib 111 and the boss 112, avoiding the rolling of the roller 320 being obstructed at the junction of the two, causing the rotation of the impeller body 200 to be stuck.

[0087] Specifically, in this embodiment, the cross-sectional shape of the boss 112 along the horizontal direction is a fan ring, and the center of the fan ring is located on the central axis of the barrel bottom 110. The radial dimension of the boss 112 along the barrel bottom 110 is greater than the spacing distance between the two ribs 111, which increases the contact area between the boss 112 and the roller 320. Since the roller 320 is pushed upward when passing through the boss 112, the boss 112 will increase the supporting force to the roller 320, and there is a large contact area between the boss 112 and the roller 320, which can disperse the interaction force between the roller 320 and the boss 112, and avoid excessive local pressure from damaging the structure of the boss 112.

[0088] In the preferred solution of this 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 bosses 112. The stirring blades 300 and the bosses 112 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 bosses 112. In this way, during the rotation of the impeller body 200, a plurality of stirring blades 300 can be located above the bosses 112 or above the ribs 111 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.

[0089] Specifically, in this embodiment, three stirring blades 300 are provided, and the interval between two adjacent stirring blades 300 is 120°. Correspondingly, three bosses 112 are provided on the barrel bottom 110, and the interval between two adjacent bosses 112 is also 120°.

[0090] 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.

[0091] As another preferred solution of this embodiment, the number of bosses can also be an integral multiple of the number of stirring blades, and the stirring blades and bosses 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 frequency of the stirring blades moving up and down is higher, which has a stronger kneading effect on the clothes in the barrel.

[0092] When assembling the inner barrel assembly of this embodiment, the stirring blade 300 is assembled first. Specifically, the roller 320 is placed in the mounting cavity of the housing 310, the channel at the center of the roller 320 is aligned with the through hole 3111 on the mounting plate 311, and then the rotating shaft 330 is inserted through one of the through holes 3111 until it passes through the other through hole 3111. After that, the stop sleeves are respectively installed at both ends of the rotating shaft 330 to prevent the rotating shaft 330 from falling out.

[0093] After the stirring blade 300 is assembled, it is placed on the bottom 110 of the inner barrel 100, and then the impeller body 200 is installed from top to bottom, so that each stirring blade 300 and each mounting hole 206 are passed through the lower side of the impeller body 200 in a one-to-one correspondence. At the same time, the impeller body 200 is connected to the impeller shaft passing through the bottom 110, and the installation of the impeller body 200 is realized. 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 with the rotation of the impeller body 200, and the roller 320 below rolls along the supporting surface of the barrel bottom 110.

[0095] See also Figure 6 and Figure 7 When the roller 320 rolls along the top surface of the rib 111, the stirring blade 300 remains at a relatively low initial position. When the roller 320 rolls to the position where the boss 112 is located, see Fig. 9 and Fig.10 , the boss 112 pushes the roller 320 upward, and the stirring blade 300 moves upward relative to the impeller body 200. When the roller 320 further rolls over the boss 112, the roller 320 contacts the top surface of the rib 111 again, so that the height of the stirring blade 300 drops to restore to Figure 6 and Figure 7 Status shown.

[0096] In this embodiment, the pulsator 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 supporting surface of the barrel bottom 110 that is staggered in the circumferential direction, and can move up and down with the rotation of the pulsator body 200. In this way, the stirring blade 300 can rotate with the pulsator body 200 to stir the clothes and water flow, and can also rub the clothes by moving up and down, which is conducive to improving the washing rate without increasing the risk of additional clothes entanglement.

[0097] Embodiment 2

[0098] like Figures 1 to 10As shown, this embodiment is a further limitation of the above-mentioned embodiment 1, the bottom 110 of the inner tub 100 has a concave mounting groove for mounting the impeller. The supporting surface is formed on the bottom wall 125 of the mounting groove.

[0099] Specifically, the installation groove has a circular bottom wall 125 , and the rib 111 and the boss 112 are both arranged on the bottom wall 125 and protrude upward.

[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 Figure 8 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 a preferred solution of this embodiment, one end of the guide portion 205 close to the outer periphery of the impeller 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 .

[0105] Thus, the folding edge 203, the annular rib 124 and the guide portion 205 cooperate to further increase 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, thereby ensuring that clothes will not be caught during the washing process to the greatest extent. At the same time, the above structure also effectively reduces the probability of thread scraps entering between the pulsator body 200 and the bottom 110, thereby preventing the thread scraps from being entangled on the roller 320 and hindering the rotation of the roller 320.

[0106] 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 the clothes from being clamped by the impeller body 200 during the washing process, and protecting the clothes from being damaged. At the same time, the multiple-bend gap structure also reduces the situation where the wire scraps enter the space below the impeller body 200 with the water flow to a certain extent, thereby preventing the wire scraps from being entangled and hindering the rolling of the roller 320, and ensuring the smooth rolling of the roller 320.

[0107] 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 fixedly installed relative to the bottom of the inner barrel; The stirring blade is installed on the impeller body and can move up and down along the axis of the inner barrel relative to the impeller body; In the area below the circumference of the stirring blade, the bottom of the inner barrel forms a high and low staggered supporting surface along the circumference of the inner barrel; the impeller body rotates to drive the stirring blade to move up and down along the supporting surface.

2. The inner barrel assembly according to claim 1, 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 upper part of the stirring blade protrudes from the upper surface of the impeller body, and the lower part of the stirring blade is lower than the lower surface of the impeller body, and contacts and cooperates with the supporting surface below to move accordingly.

3. The inner barrel assembly according to claim 2, characterized in that: The stirring blade comprises a shell and a roller, wherein the shell has a mounting cavity with an open lower side, and the roller is rotatably mounted in the mounting cavity, and the lowest position of the roller is lower than the lower opening of the mounting cavity; The shell can be movably installed in the installation hole up and down, and when the impeller body rotates, the roller contacts the support surface and rolls along the support surface, driving the shell to move up and down relative to the impeller body.

4. The inner barrel assembly according to claim 3, characterized in that: The shell extends radially along the impeller body to have a certain length, and the stirring blade also includes a rotating shaft extending radially; the roller is installed on the rotating shaft and can roll around the axis of the rotating shaft.

5. The inner barrel assembly according to claim 4, characterized in that: A mounting plate for connecting the rotating shaft is arranged in the mounting cavity; the mounting plate is arranged perpendicular to the length direction of the housing, and extends downward from the top of the inner wall of the mounting cavity, and the extended end of the mounting plate is lower than the lower opening of the mounting cavity; A mounting plate is respectively arranged near the two ends of the shell, and the mounting plate is spaced apart from the end of the shell; the two ends of the rotating shaft are respectively connected to one of the mounting plates, and the roller is installed in the spacing area between the two mounting plates.

6. The inner barrel assembly according to claim 5, 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; The side wall of the shell partially extends downward to be flush with the extended end of the mounting plate, forming a connecting plate respectively connected to the two mounting plates; the lower edges of the connecting plates on both sides have a limiting portion extending horizontally in the opposite direction, which is used to cooperate with the extended end of the guide portion to prevent the shell from moving upward and escaping from the mounting hole.

7. The inner barrel assembly according to any one of claims 3 to 6, characterized in that: The barrel bottom is provided with convex ribs extending in the circumferential direction, and at least two convex ribs are provided at intervals along the radial direction of the barrel bottom; the roller contacts the top surface of the convex rib and rolls along the top surface of the convex rib.

8. The inner barrel assembly according to claim 7, characterized in that: The barrel bottom is provided with a plurality of bosses at intervals along the circumferential direction, and the convex ribs extend along the circumferential direction of the barrel bottom between two adjacent bosses; the protrusion height of the boss is higher than the protrusion height of the convex ribs, and the bosses and the convex ribs cooperate to form the high and low staggered support surface.

9. The inner barrel assembly according to any one of claims 1 to 6, characterized in that: The bottom of the inner barrel has a concave mounting groove for mounting the impeller; the supporting surface is formed on the bottom wall of the mounting groove; The side peripheral wall of the mounting groove includes a first extension wall extending downward from the upper side opening of the mounting groove, an annular wall extending horizontally from the lower end of the first extension wall to the inner barrel axis, and a second extension wall extending downward from the inner periphery of the annular wall, wherein the second extension wall is connected to the bottom wall of the mounting groove; the inner periphery of the annular wall has an annular rib protruding upward and surrounding a circle; The outer periphery of the impeller body has a folded edge extending downward; the downward projection of the folded edge falls on the annular wall and is located between the first extension wall and the outer peripheral wall of the annular rib.

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

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