Washing machine impeller assembly and washing machine

Abstract

The impeller assembly comprises a first impeller disk and a second impeller disk, an impeller shaft mounting part is arranged in the middle of the first impeller disk, and the second impeller disk is coaxially arranged on the periphery of the impeller shaft mounting part; and the transmission mechanism is fixed on the first pulsator disc, can be connected among the first pulsator disc, the second pulsator disc and the inner barrel in a transmission manner, and is used for driving the transmission mechanism and the inner barrel to rotate relatively when the first pulsator disc rotates, so that the transmission mechanism rotates automatically, and the second pulsator disc and the first pulsator disc are driven to rotate in the same direction at differential speed or opposite directions. An existing speed reduction clutch does not need to be changed, the first pulsator disc is driven to rotate through the pulsator shaft, the transmission mechanism is driven to rotate around the pulsator shaft and rotate relative to the inner barrel, the transmission mechanism is made to rotate automatically, the second pulsator disc is driven to rotate forwards or reversely relative to the first pulsator disc, and the water flow overturning capacity of the pulsator is improved; the impact force of water flow is enhanced, and the cleaning ratio of the washing machine is improved.

Description

Technical Field

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

[0002] As people's living standards continue to improve, washing machines have gradually become a must-have household appliance. A pulsator washing machine consists of an outer tub housed within a housing, a rotatable inner tub within the outer tub, and a pulsator rotatably mounted at the bottom of the inner tub. During washing, the rotation of the pulsator drives the flow of water and the clothes, washing them.

[0003] Chinese patent application number 201810421886.5 discloses a control method for a washing machine and a washing machine. The washing machine sequentially performs washing, rinsing, and dehydration procedures. During the washing phase, water is introduced to a preset water level, and a heating procedure is executed to heat the washing water. When the washing water temperature reaches the preset temperature, the washing process is started, and the impeller washes underwear at a preset rotation-stop ratio. The rotation time within the rotation-stop cycle is not less than the stop time, wherein the rotation time within the rotation-stop cycle of the preset rotation-stop ratio is 0.8-1.4 seconds, and the stop time is 0.8 seconds. The rinsing phase includes performing a set number of rinses, and also includes executing a sterilization procedure to sterilize and disinfect the underwear. During the dehydration phase, dehydration is performed using an intermittent dehydration method followed by a continuous dehydration method. The application of this control method can enhance the washing effect and make the clothes cleaner.

[0004] However, simply controlling the forward and reverse rotation of the washing machine and the rotation-stop ratio of the washing machine has limited washing effect on the clothes. Relying solely on the pulsator for power, the washing and turning capacity is insufficient. It is necessary to further improve the washing effect and increase the cleaning ratio. The existing technology attempts to set the pulsator to a multi-pulsator structure and make it rotate in opposite directions to achieve the problem of improving the cleaning ratio.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology. The purpose is to provide a washing machine impeller assembly, which adopts a new transmission mechanism and does not require modification of the existing deceleration clutch. One power can drive the two impellers to rotate. The transmission mechanism is connected between the first impeller, the second impeller and the inner barrel. The first impeller rotates under the drive of the impeller shaft, and part of the transmission mechanism revolves around the impeller shaft under the drive of the first impeller, and rotates relative to the inner barrel, so that the transmission mechanism rotates, and the transmission mechanism rotates by itself, thereby driving the second impeller to rotate in a positive differential or reverse direction relative to the first impeller. The transmission is stable, occupies little space, can increase the ability of the impeller to flip the water flow, enhance the impact force of the water flow, improve the washing ability of clothes, and improve the washing ratio of the washing machine.

[0007] Another object of the present invention is to provide a washing machine.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is to provide a washing machine pulsator assembly, comprising:

[0009] a first impeller and a second impeller, wherein a central portion of the first impeller is provided with an impeller shaft mounting portion, and the second impeller is coaxially disposed on the periphery of the impeller shaft mounting portion;

[0010] The transmission mechanism is fixed on the first impeller and can be connected between the first impeller, the second impeller and the inner barrel. When the first impeller rotates, it drives the transmission mechanism and the inner barrel to rotate relative to each other, so that the transmission mechanism can rotate on its own, thereby driving the second impeller to rotate in the same direction with a differential speed or in the opposite direction as the first impeller.

[0011] Furthermore, the upper portion of the first impeller disc has a downwardly concave annular groove, which is provided between the outer periphery of the impeller shaft mounting portion and the outer periphery of the first impeller disc, and the annular groove is provided with a through avoidance notch;

[0012] The second impeller is an annular disc, coaxially rotatably disposed in the annular groove;

[0013] The transmission mechanism is fixed to the lower part of the first impeller, and the first transmission end of the transmission mechanism is connected to the second impeller through the avoidance gap. The second transmission end is used for relative rotation connection with the inner barrel. When the first impeller rotates, it rotates and drives the first transmission end to rotate.

[0014] Furthermore, the transmission mechanism includes:

[0015] a gear ring extending circumferentially and arranged at the lower portion of the second impeller disc;

[0016] A gear set is rotatably disposed at the bottom of the first impeller disc, wherein a first transmission end of the gear set is at least partially located in the avoidance gap and is meshed with the external teeth of the gear ring in transmission connection;

[0017] The gear plate is used to be fixed on the bottom wall of the inner barrel and is meshed with the second transmission end of the gear set.

[0018] Furthermore, the avoidance notch passes through the inner ring side wall of the annular groove, and the gear ring is arranged on the bottom wall of the second impeller disc; the first transmission end of the gear set has an upper gear, and the outer teeth of the upper gear are meshed and connected to the outer teeth of the gear ring through the avoidance notch; the second transmission end of the gear set has a lower gear, and the outer teeth of the lower gear are meshed with the inner teeth of the gear disc;

[0019] Preferably, the gear ring is fixed on the inner ring edge of the bottom wall of the second impeller disc, and the outer teeth of the gear ring are flush with the inner ring side wall of the second impeller disc or protrude toward the inner periphery.

[0020] Furthermore, the avoidance gaps are arranged at intervals along the circumferential direction on the inner ring side wall of the annular groove, and the transmission mechanism includes multiple sets of gear groups, which are spaced at intervals on the outer periphery of the impeller shaft mounting portion; the upper gears of the multiple sets of gear groups are respectively engaged with the gear ring for transmission connection.

[0021] Furthermore, the bottom of the first impeller disc is provided with an upwardly recessed mounting cavity, which is located between the impeller shaft mounting portion and the annular groove, and the avoidance gap passes through the outer ring side wall of the mounting cavity and the inner ring side wall of the annular groove;

[0022] The transmission mechanism also includes a gear fixing seat, which is arranged on the bottom wall of the first impeller disk on the outer periphery of the impeller shaft mounting portion and is buckled outside the mounting cavity; the upper gear is arranged in the mounting cavity, and part of the external teeth are located in the avoidance gap. The connecting shaft vertically and coaxially connected between the upper gear and the lower gear passes through the gear fixing seat, and the lower gear is located below the mounting cavity.

[0023] Furthermore, the center of the first impeller disc has an impeller through hole, the upper end of the impeller shaft mounting portion is embedded in the impeller through hole, and the lower end protrudes out of the impeller through hole, and the interior of the impeller shaft mounting portion has a mounting hole for connecting with the impeller shaft; the impeller shaft mounting portion passes through the middle of the gear fixing seat;

[0024] Preferably, the upper surface of the second impeller is flush with the upper surface of the outer peripheral portion of the first impeller, or the upper surface of the second impeller is slightly protruding from the upper surface of the outer peripheral portion of the first impeller.

[0025] Furthermore, a rotatable wheel is provided on the bottom wall of the outer ring end of the second impeller disc, the rotating shaft of the wheel is extended radially, and a certain gap is formed between the wheel and the bottom wall of the annular groove.

[0026] Furthermore, it also includes a third impeller, which is fixedly or rotatably arranged on the upper part of the first impeller and is buckled on the outer periphery of the impeller shaft mounting portion;

[0027] Preferably, the maximum outer diameter of the third impeller is greater than the inner diameter of the second impeller, the outer peripheral edge of the third impeller is pressed above the inner peripheral edge of the second impeller, and the third impeller protrudes upward from the second impeller.

[0028] The present invention also provides a washing machine having any of the above-mentioned washing machine pulsator assemblies.

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

[0030] (1) The first impeller of the present invention rotates under the drive of the impeller shaft, and is connected to the transmission mechanism between the first impeller, the second impeller and the inner tub through the transmission mechanism. Part of the transmission mechanism revolves around the impeller shaft under the drive of the first impeller, and rotates relative to the inner tub, so that the transmission mechanism rotates on its own, and the self-rotation causes the transmission mechanism connected to the second impeller to rotate, thereby driving the second impeller to rotate in a positive differential speed or reverse direction relative to the first impeller. There is no need to modify the existing deceleration clutch, and the space is small. The ability of the impeller to flip the water flow is increased, the impact force of the water flow is enhanced, the washing ability of the clothes is improved, and the washing ratio of the washing machine is improved.

[0031] (2) The lower gear of the present invention is arranged between the first impeller and the bottom of the inner barrel, and the gap between the two is utilized to reduce the occupied space. The upper gear is arranged in the installation cavity at the lower part of the first impeller, and part of the outer teeth of the upper gear are located in the avoidance gap, realizing the transmission connection with the inner circumference of the second impeller in the circumferential direction. It can not only drive the second impeller to rotate in the opposite direction relative to the first impeller, but also utilize the installation cavity formed by the space inside the first impeller. The transmission mechanism structure is integrated and small in size, which reduces the space occupied between the first impeller, the second impeller and the inner barrel.

[0032] (3) The bottom wall of the outer ring end of the second impeller is further provided with a plurality of rotatable wheels, with a certain gap between them and the bottom wall of the annular groove. The rotating shafts of the wheels extend radially. Under normal conditions, the wheels do not contact the bottom wall of the annular groove. If the second impeller deforms and rubs against the bottom of the annular groove, the wheels can play a role in supporting the outer ring end of the second impeller and ensuring smooth rotation, thereby avoiding friction damage between the two and maintaining the stability of the rotation of the second impeller.

[0033] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[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 undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0035] Figure 1 It is a schematic diagram of a partial structure of a pulsator washing machine of the present invention;

[0036] Figure 2 This invention Figure 1 Schematic cross-sectional view of ;

[0037] Figure 3 This invention Figure 2 Schematic diagram of the middle part structure;

[0038] Figure 4 This is a schematic exploded view of the structure of a pulsator assembly of the present invention;

[0039] Figure 5 It is a cross-sectional schematic diagram of a pulsator assembly of the present invention;

[0040] Figure 6 is a schematic diagram of the bottom side of a pulsator assembly of the present invention;

[0041] Figure 7 It is a schematic diagram of the installation of multiple gear sets and gear fixing seats of the present invention.

[0042] In the figure: 1. impeller; 11. first impeller disk; 111. impeller through hole; 112. impeller shaft mounting portion; 113. annular groove; 114. avoidance gap; 115. mounting cavity; 12. second impeller disk; 121. rotating wheel; 122. extension edge; 13. third impeller disk; 131. flange; 2. transmission mechanism; 21. gear set; 211. upper gear; 212. connecting shaft; 213. lower gear; 22. gear fixing seat; 23. gear ring; 24. gear disk; 3. inner barrel; 31. inner barrel bottom; 311. flange; 32. inner barrel body; 4. deceleration clutch; 41. impeller shaft; 42. dehydration shaft.

[0043] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0044] 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.

[0045] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0046] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0047] like Figures 1 to 7 As shown, the washing machine pulsator assembly of the present invention can be applied to a pulsator washing machine, and the rotation of the pulsator 1 drives the water flow to turn over the washed clothes.

[0048] The pulsator assembly includes a pulsator 1, which includes a first pulsator disc 11 and a second pulsator disc 12. A pulsator shaft mounting portion 112 is provided in the middle of the first pulsator disc 11, and the second pulsator disc 12 is coaxially arranged on the periphery of the pulsator shaft mounting portion 112. Preferably, a portion of the top of the first pulsator disc 11 and the top of the second pulsator disc 12 cooperate to form the upper surface of the pulsator 1. The first pulsator disc 11 and the second pulsator disc 12 are rotatable in the same direction, at a differential speed, or in opposite directions.

[0049] By setting the upper surface of the pulsator 1 as a rotatable first pulsator disc 11 and a second pulsator disc 12, part of the upper surface of the first pulsator disc 11 is rotatably located on the outer periphery of the upper surface of the second pulsator disc 12, and the two pulsator discs are set to rotate in the same direction with a differential speed or in opposite directions, the water flow can be driven to rotate in the same direction with a differential speed or in opposite directions when the washing machine is washing, so that the water flow is flipped, the impact force of the water flow is enhanced, the washing ability of the clothes is improved, and the washing ratio of the washing machine is improved.

[0050] The upper surface of the second impeller disc 12 is flush with the upper surface of the outer peripheral portion of the first impeller disc 11, or the upper surface of the second impeller disc 12 slightly protrudes from the upper surface of the outer peripheral portion of the first impeller disc 11. The top surface of the first impeller disc 11 and the top surface of the second impeller disc 12 are dynamically sealed, and the two cooperate to form the entire upper surface of the impeller 1 or most of the upper surface of the impeller 1, which is approximately flat.

[0051] like Figures 2 to 5 As shown, the pulsator assembly includes a transmission mechanism 2. The transmission mechanism 2 is fixed to the first pulsator disc 11 and can be transmission-connected between the first pulsator disc 11, the second pulsator disc 12, and the inner tub 3. When the first pulsator disc 11 rotates, it drives the transmission mechanism 2 and the inner tub 3 to rotate relative to each other, so that the transmission mechanism 2 can rotate on its own, driving the second pulsator disc 12 to rotate in the same direction with the first pulsator disc 11 at a differential speed or in the opposite direction.

[0052] The present invention does not require modification of the existing deceleration clutch 4 (including the impeller shaft 41 and the dehydration shaft 42 ), and can drive the first impeller disc 11 and the second impeller disc 12 to rotate in the same direction or in opposite directions through a power source.

[0053] The impeller shaft mounting portion 112 in the middle of the first impeller disc 11 can be connected to the impeller shaft 41 of the deceleration clutch 4 of the washing machine, and is used to rotate under the drive of the impeller shaft 41. The transmission mechanism 2 is connected between the first impeller disc 11 and the second impeller disc 12 and the inner tub 3 through the transmission. Driven by the first impeller disc 11, the transmission mechanism 2 is driven to revolve relative to the inner tub 3, so that the transmission mechanism 2 rotates, and the self-rotation causes the part transmitted to the second impeller disc 12 to rotate, thereby driving the second impeller disc 12 to rotate forward or reverse. The transmission effect is good, the space occupied is small, the ability of the impeller to flip the water flow is increased, the impact force of the water flow is enhanced, the washing ability of the clothes is improved, and the washing ratio of the washing machine is improved.

[0054] The upper portion of the first impeller disc 11 has a downwardly recessed annular groove 113, located between the outer periphery of the impeller shaft mounting portion 112 and the outer periphery of the first impeller disc 11. The second impeller disc 12 is an annular disc, coaxially disposed in the annular groove 113 of the first impeller disc 11. The annular groove 113 has a through-hole 114.

[0055] The transmission mechanism 2 is fixed to the bottom of the first impeller disc 11 on the outer periphery of the impeller shaft mounting portion 112. The first transmission end of the transmission mechanism 2 is connected to the inner ring end of the second impeller disc 12 through the avoidance gap 114. The second transmission end of the transmission mechanism 2 is used for relative rotation with the inner barrel 3. When the first impeller disc 11 rotates, it rotates and drives the first transmission end to rotate. The first transmission end of the transmission mechanism 2 drives the second impeller disc 12 to rotate in the same direction with the first impeller disc 11 at a differential speed or in the opposite direction. The transmission mechanism 2 can realize both the reversing function between the impeller discs and the speed change.

[0056] The present invention provides an annular groove 113 on the outer periphery of the impeller shaft mounting portion 112 of the first impeller disc 11, and the second impeller disc 12 is rotatably arranged in the annular groove 113, which can avoid the entire bottom wall of the annular groove 113 from being opened, thereby ensuring the strength of the first impeller disc 11, and thus ensuring the strength of the entire impeller, and fixing the transmission mechanism 2 on the bottom wall of the first impeller disc 11 on the outer periphery of the impeller shaft mounting portion 112, and providing a through avoidance notch 114 on the annular groove 113, so that the first transmission end of the transmission mechanism 2 can be transmitted to the second impeller disc 12, and the second transmission end is connected to the inner barrel 3 for relative rotation, and can rotate when the first impeller disc 11 rotates to drive the first transmission end to rotate, and mesh with the second impeller disc 12 for transmission connection, so that the second impeller disc 12 can move forward or reverse relative to the first impeller disc 11, so that the transmission mechanism 2 has a compact structure, occupies a small space, has high transmission efficiency, and has good transmission effect.

[0057] The transmission mechanism 2 includes a gear ring 23 , a gear set 21 and a gear plate 24 .

[0058] The gear ring 23 is circumferentially disposed below the second impeller plate 12 and is coaxial with the first impeller plate 11. The gear set 21 is rotatably disposed at the bottom of the first impeller plate 11. The first transmission end of the gear set 21 is at least partially located within the relief notch 114 and is in meshing transmission connection with the external teeth of the gear ring 23.

[0059] The second transmission end of the transmission mechanism 2 is used to engage with the gear plate 24 fixed on the bottom wall of the inner barrel 3. When the impeller shaft 41 drives the first impeller plate 11 to rotate, it drives the gear set 21 to rotate along the circumference of the impeller 1 to realize revolution around the impeller shaft 41, while the inner barrel 3 is stationary. The second transmission end of the gear set 21 engages and moves with the internal teeth of the gear plate 24 of the inner barrel 3 to realize the self-rotation of the gear set 21, so that the first transmission end of the gear set 21 rotates, thereby driving the second impeller plate 12 to rotate.

[0060] A pulsator through hole 111 is defined in the middle of the first pulsator disc 11 . A pulsator shaft mounting portion 112 is defined in the pulsator through hole 111 . The pulsator shaft 41 is embedded in the pulsator shaft mounting portion 112 .

[0061] The transmission mechanism 2 is located on the periphery of the impeller shaft 41 or the impeller through hole 111 .

[0062] Preferably, the impeller shaft mounting portion 112 is columnar, with a cavity extending upward from the lower end, and a bolt hole communicating with the cavity provided on the top. The impeller shaft 41 is embedded in the cavity in the impeller shaft mounting portion 112 from bottom to top, and a bolt is fixed to the top of the impeller shaft 41 through the bolt hole from the top, thereby fixing the impeller shaft 41 to the first impeller disc 11. Specifically, the impeller shaft mounting portion 112 is a impeller bushing.

[0063] The avoidance notch 114 is provided on the bottom wall of the annular groove 113 , and may also be provided on the side wall of the annular groove 113 .

[0064] Furthermore, the relief notch 114 extends through the inner sidewall of the annular groove 113. The gear ring 23 is disposed on the bottom wall of the second impeller disc 12 or sleeved on the outer circumference of the lower portion of the second impeller disc 12. The first transmission end of the gear set 21 includes an upper gear 211 fixed relative to the first impeller disc 11. The external teeth of the gear ring 23 are in driving connection with the external teeth of the gear ring 23 through the relief notch 114. The second transmission end of the gear set 21 includes a lower gear 213, the external teeth of which mesh with the internal teeth of the gear disc 24.

[0065] The present invention arranges the second impeller 12 in the annular groove 113 on the upper part of the first impeller 11, and the transmission mechanism 2 is arranged below the first impeller 11. The transmission mechanism 2 passes through the avoidance gap 114 on the annular groove 113 and is connected to the second impeller 12 in the annular groove 113. The transmission mechanism 2 is located on the outer periphery of the impeller shaft mounting portion 112, so that the structure is more compact and occupies less space.

[0066] The gear set 21 includes a plurality of gears, and the rotation direction and speed of the transmission can be adjusted according to the meshing mode and the size of the gears.

[0067] like Figures 4 to 7 As shown, the avoidance notches 114 are circumferentially spaced apart on the inner sidewall of the annular groove 113. The transmission mechanism 2 includes multiple gear sets 21, which are spaced apart and located on the outer periphery of the impeller shaft mounting portion 112. The outer teeth of the upper gears 211 of the multiple gear sets 21 mesh with the inner side of the second impeller plate 12 in a circumferential transmission connection. The second transmission ends of the multiple gear sets 21 are respectively meshed and transmission connected with the gear plates 24.

[0068] The bottom of the first impeller disc 11 is provided with an upwardly recessed mounting cavity 115. The mounting cavity 115 is opened downward and is located between the impeller shaft mounting portion 112 and the annular groove 113. The relief notch 114 passes through the outer sidewall of the mounting cavity 115 and the inner sidewall of the annular groove 113, connecting the mounting cavity 115 with the annular groove 113.

[0069] The upper gear 211 of the gear set 21 is disposed in the installation cavity 115 , and the lower gear 213 of the gear set 21 is disposed below the installation cavity 115 and outside the installation cavity 115 .

[0070] The lower gear 213 is arranged between the first impeller 11 and the inner barrel bottom 31, and the gap between the two is utilized to reduce the occupied space. The upper gear 211 is arranged in the concave mounting cavity 115 at the lower part of the first impeller 11. Part of the outer teeth of the upper gear 211 are located in the avoidance gap 114, realizing a circumferential transmission connection with the inner circumference of the second impeller 12, which can not only drive the second impeller 12 to rotate in the opposite direction relative to the first impeller 11, but also utilize the mounting cavity 115 formed by the space inside the first impeller 11. The transmission mechanism 2 has an integrated structure and a small volume, which reduces the space occupied between the first impeller 11, the second impeller 12 and the inner barrel 3.

[0071] The gear set 21 includes the upper gear 211 , the lower gear 213 and a connecting shaft 212 .

[0072] The lower gear 213 is located below the mounting cavity 115 and is circumferentially connected to the inner tub 3. The connecting shaft 212 extends vertically and is coaxially connected between the axles of the upper gear 211 and the lower gear 213. The connecting shaft 212 is rotatably mounted on the bottom of the first impeller 11 and is vertically fixed relative to the first impeller 11.

[0073] The transmission mechanism 2 includes a gear fixing seat 22. The gear fixing seat 22 is fixed to the bottom wall of the first impeller disc 11 on the outer periphery of the impeller shaft mounting portion 112. The gear fixing seat 22 is arranged below the impeller through hole 111, and the upper gear 211 is buckled into the mounting cavity 115. The connecting shaft 212 is rotatably inserted into the through hole of the gear fixing seat 22.

[0074] The mounting cavities 115 are recessed and arranged at intervals along the circumferential direction on the bottom wall of the first impeller plate 11 between the impeller through hole 111 and the annular groove 113 .

[0075] Preferably, the gear fixing seat 22 is mounted on the bottom wall of the first impeller disc 11 at the periphery of the impeller through hole 111, and the periphery thereof extends to a position corresponding to the bottom wall of the annular groove 113. The upper gear 211, the connecting shaft 212 and the lower gear 213 can be detachably connected or fixedly connected.

[0076] The gear fixing seat 22 is a gear fixing plate, and a through hole is provided in the middle of the gear fixing plate for passing the impeller shaft mounting portion 112. A plurality of first mounting holes matching the number of the gear set 21 are provided on the gear fixing plate on the periphery of the through hole. The plurality of first mounting holes are arranged at intervals along the circumferential direction, and the connecting shaft 212 is rotatably passed through the first mounting hole. A plurality of second mounting holes are provided on the gear fixing plate on the periphery of the first mounting hole, which are arranged at intervals along the circumferential direction on the outer peripheral edge of the gear fixing plate. A connecting column is provided on the bottom wall of the first impeller disc 11, and the gear fixing plate is fixed to the connecting column by screws or bolts or the like through the second mounting holes.

[0077] Furthermore, the gear ring 23 is disposed on the inner ring edge of the bottom wall of the second impeller disc 12. The inner gear ring of the gear ring 23 protrudes inwardly from the inner ring side wall of the second impeller disc 12 and is drivingly connected to the outer teeth of the upper gear 211 of the gear set 21. This not only allows a gap to be left between the inner ring side wall of the second impeller disc 12 and the inner ring wall of the annular groove 113 to avoid obstructing the rotation of the second impeller disc 12, but also allows a gap to be left between the bottom wall of the second impeller disc 12 and the bottom wall of the annular groove 113 to prevent the outer periphery of the second impeller disc 12 from sinking or eccentrically loading and interfering with the bottom wall of the annular groove 113. Of course, the gear ring 23 can also be directly disposed on the inner ring side wall of the second impeller disc 12.

[0078] Preferably, the bottom wall of the outer ring end of the second impeller disc 12 is further provided with a plurality of rotatable wheels 121, with a certain gap between the bottom wall of the annular groove 113. The rotating shafts of the wheels 121 extend radially.

[0079] Under normal conditions, the runner 121 does not contact the bottom wall of the annular groove 113. If the second pulsator 12 deforms and rubs against the bottom of the annular groove 113, the runner 121 can support the outer ring end of the second pulsator 12 and ensure smooth rotation, thereby avoiding friction damage between the two and maintaining the rotation stability of the second pulsator 12.

[0080] The gear plate 24 is disc-shaped, with its bottom wall sleeved around the outer periphery of the impeller shaft 41 and fixed to the bottom wall of the inner tub 3. The inner ring gear on the inner circumferential wall of the gear plate 24 is circumferentially connected to the outer teeth of the lower gear 213 of the multi-gear assembly 21. The top opening of the gear plate 24 faces the bottom wall of the gear fixing seat 22. The bottom wall of the gear plate 24 is provided with drainage holes to prevent water from accumulating in the gear plate 24 and causing corrosion and damage to the transmission mechanism 2.

[0081] like Figures 1 to 5 As shown, the pulsator assembly also includes a third pulsator disc 13. The third pulsator disc 13 is fixedly or rotatably positioned above the pulsator through-hole 111 of the first pulsator disc 11, acting as a position limiter for the second pulsator disc 12. This improves water flow and enhances washing performance. The third pulsator disc 13 protrudes upward from the second pulsator disc 12, enhancing the ability of clothing to flip upward and prevent entanglement.

[0082] The maximum outer diameter of the third impeller 13 is greater than the inner diameter of the second impeller 12. The outer peripheral edge of the third impeller 13 is pressed against the inner peripheral edge of the second impeller 12, which plays a role in limiting and maintaining the stability of the inner ring end of the second impeller 12, and can also form a seal between the two to prevent clothes from being clamped during the washing process.

[0083] Preferably, the bottom wall of the inner ring side of the second impeller disc 12 continues to extend inward to form an extended edge 122, and the outer periphery of the third impeller disc 13 extends radially outward to form a flange 131. The flange 131 is provided on the inner ring side wall of the annular groove 113 above the extended edge 122 and is lower than the top surface of the second impeller disc 12. The flange 131 and the extended edge 122 are dynamically sealed.

[0084] The third impeller 13 is a cover with an opening facing downward, and the flange 131 is formed by folding and extending outward from the opening.

[0085] The top of the third impeller 13 is provided with a water-repelling blade extending from the inner circumference to the outer circumference. The bottom wall of the third impeller 13 is provided with a claw that is clamped on the top wall of the first impeller 11 outside the impeller through hole 111.

[0086] The radial width of the second pulsator disc 12 is slightly smaller than the outer diameter of the third pulsator disc 13 , or is substantially the same as the outer diameter of the third pulsator disc 13 .

[0087] Preferably, three water-displacing blades are respectively provided on each impeller disc.

[0088] The third impeller 13 is mounted on the middle portion of the first impeller 11 on the inner periphery of the annular groove 113. The first impeller 11 is a circular disc, and the outer diameter of the outer periphery of the annular groove 113 is substantially the same as the outer diameter of the annular groove 113 and the outer convex diameter of the middle portion.

[0089] like Figures 1 to 2 As shown, the present invention also provides a washing machine having any of the above-mentioned washing machine impeller assemblies.

[0090] The washing machine comprises an inner tub 3, an outer tub (not shown) and a deceleration clutch 4. The inner tub 3 is rotatably arranged in the outer tub, and the pulsator assembly is rotatably arranged in the inner tub 3.

[0091] The deceleration clutch 4 is fixed to the bottom wall outside the outer tub, and the impeller shaft 41 of the deceleration clutch 4 passes through the outer tub and the inner tub 3, and is connected to the impeller shaft mounting portion 112 in the impeller through hole 111. The dehydration shaft 42 of the deceleration clutch 4 is sleeved on the outer circumference of the impeller shaft 41, passed through the outer tub, and connected to the bottom wall outside the inner tub 3.

[0092] The washing machine is a pulsator washing machine, and the opening of the outer barrel is arranged upward.

[0093] The inner tub 3 includes an inner tub bottom 31 and an inner tub body 32, which is conventional technology. The impeller assembly is disposed in the inner tub bottom 31. The bottom wall of the inner tub bottom 31 has a flange 311. The impeller shaft 41 passes through the flange 311, and the dehydration shaft 42 is fixed to the outer wall of the flange 311. The gear plate 24 is fixed to a recessed portion of the inner wall of the flange 311. The gear fixing seat 22 is disposed on the bottom wall of the first impeller plate 11, and is arranged opposite the gear plate 24 on the inner bottom wall of the inner tub 3.

[0094] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above-mentioned embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A washing machine pulsator assembly, characterized in that: include: a first impeller and a second impeller, wherein a central portion of the first impeller is provided with an impeller shaft mounting portion, and the second impeller is coaxially disposed on the periphery of the impeller shaft mounting portion; The transmission mechanism is fixed on the first impeller and can be connected between the first impeller, the second impeller and the inner barrel. When the first impeller rotates, it drives the transmission mechanism and the inner barrel to rotate relative to each other, so that the transmission mechanism can rotate on its own, thereby driving the second impeller to rotate in the same direction with a differential speed or in the opposite direction as the first impeller.

2. A washing machine pulsator assembly according to claim 1, characterized in that: The upper portion of the first impeller disc has a downwardly concave annular groove, which is arranged between the outer periphery of the impeller shaft mounting portion and the outer periphery of the first impeller disc, and the annular groove is provided with a through avoidance notch; The second impeller is an annular disc, coaxially rotatably disposed in the annular groove; The transmission mechanism is fixed to the lower part of the first impeller, and the first transmission end of the transmission mechanism is connected to the second impeller through the avoidance gap. The second transmission end is used for relative rotation connection with the inner barrel. When the first impeller rotates, it rotates and drives the first transmission end to rotate.

3. A washing machine pulsator assembly according to claim 2, characterized in that: The transmission mechanism comprises: a gear ring extending circumferentially and arranged at the lower portion of the second impeller disc; A gear set is rotatably disposed at the bottom of the first impeller disc, wherein a first transmission end of the gear set is at least partially located in the avoidance gap and is meshed with the outer teeth of the gear ring in transmission connection; The gear plate is used to be fixed on the bottom wall of the inner barrel and is meshed with the second transmission end of the gear set.

4. A washing machine pulsator assembly according to claim 3, characterized in that: The avoidance notch passes through the inner ring side wall of the annular groove, and the gear ring is arranged on the bottom wall of the second impeller plate; the first transmission end of the gear set has an upper gear, and the outer teeth of the upper gear are meshed and connected to the outer teeth of the gear ring through the avoidance notch; the second transmission end of the gear set has a lower gear, and the outer teeth of the lower gear are meshed with the inner teeth of the gear plate; Preferably, the gear ring is fixed on the inner ring edge of the bottom wall of the second impeller disc, and the outer teeth of the gear ring are flush with the inner ring side wall of the second impeller disc or protrude toward the inner periphery.

5. A washing machine pulsator assembly according to claim 4, characterized in that: The avoidance gaps are arranged at intervals along the circumferential direction on the inner ring side wall of the annular groove, and the transmission mechanism includes multiple sets of gear groups, which are located at intervals on the outer periphery of the impeller shaft mounting portion; the upper gears of the multiple sets of gear groups are respectively engaged with the gear ring for transmission connection.

6. A washing machine pulsator assembly according to any one of claims 4-5, characterized in that: The bottom of the first impeller disc is provided with an upwardly concave mounting cavity, which is located between the impeller shaft mounting portion and the annular groove, and the avoidance gap passes through the outer ring side wall of the mounting cavity and the inner ring side wall of the annular groove; The transmission mechanism also includes a gear fixing seat, which is arranged on the bottom wall of the first impeller disk on the outer periphery of the impeller shaft mounting portion and is buckled outside the mounting cavity; the upper gear is arranged in the mounting cavity, and part of the external teeth are located in the avoidance gap. The connecting shaft vertically and coaxially connected between the upper gear and the lower gear passes through the gear fixing seat, and the lower gear is located below the mounting cavity.

7. A washing machine pulsator assembly according to claim 6, characterized in that: The center of the first impeller disc has an impeller through hole, the upper end of the impeller shaft mounting portion is embedded in the impeller through hole, and the lower end protrudes out of the impeller through hole. The impeller shaft mounting portion has an interior mounting hole for connecting with the impeller shaft; the impeller shaft mounting portion passes through the middle of the gear fixing seat; Preferably, the upper surface of the second impeller is flush with the upper surface of the outer peripheral portion of the first impeller, or the upper surface of the second impeller is slightly protruding from the upper surface of the outer peripheral portion of the first impeller.

8. A washing machine pulsator assembly according to any one of claims 3 to 7, characterized in that: A rotatable wheel is further provided on the bottom wall of the outer ring end of the second impeller disc. The rotating shaft of the wheel is radially extended, and a certain gap is formed between the wheel and the bottom wall of the annular groove.

9. A washing machine pulsator assembly according to any one of claims 3 to 8, characterized in that: It also includes a third impeller, which is fixedly or rotatably arranged on the upper part of the first impeller and is buckled on the outer periphery of the impeller shaft mounting portion; Preferably, the maximum outer diameter of the third impeller is greater than the inner diameter of the second impeller, the outer peripheral edge of the third impeller is pressed above the inner peripheral edge of the second impeller, and the third impeller protrudes upward from the second impeller.

10. A washing machine, characterized in that: A washing machine pulsator assembly according to any one of claims 1 to 9.

Images