A washing device

Abstract

The present application provides a washing device, including a washing drum, a pulsator assembly, a pulsator shaft, and a power transmission assembly, wherein the pulsator assembly is disposed in the washing drum, and the pulsator assembly includes a first pulsator and a second pulsator; the first pulsator is disposed on the pulsator shaft to rotate synchronously and at the same speed as the pulsator shaft, and the second pulsator is rotatably sleeved on the pulsator shaft; the power transmission assembly transmits the torque of the pulsator shaft to the second pulsator, so that the same pulsator shaft can drive the first pulsator and the second pulsator to rotate. The washing device of the embodiment of the present application realizes the active rotation of the first pulsator and the second pulsator through the same pulsator shaft, which can generate a strong water flow and improve the washing effect of clothes.

Description

Technical Field

[0001] The present application relates to the technical field of clothing washing and care, and in particular to a washing device. Background Art

[0002] Taking washing machines as an example, some washing machines are equipped with dual impellers in the hope of reducing clothing entanglement and improving the washing effect. In the related art, the second impeller is powered, while the first impeller is not powered. The water flow generated by the rotation of the second impeller drives the first impeller to rotate, that is, the first impeller rotates passively. When there is no load to wash or the load is small, the first impeller rotates a small amount, but when the load is slightly larger, the load creates a large rotational resistance to the first impeller, making it easy for the first impeller to be unable to rotate. This passively rotating first impeller has limited washing effect on clothes and may even reduce the washing effect. Summary of the invention

[0003] In view of this, an embodiment of the present application provides a washing device that can effectively improve the cleaning effect.

[0004] The present application provides a washing device, comprising:

[0005] Washing drum;

[0006] A pulsator assembly is disposed in the washing tub, the pulsator assembly comprising a first pulsator and a second pulsator;

[0007] A pulsator shaft, wherein the first pulsator is arranged on the pulsator shaft to rotate synchronously and at the same speed as the pulsator shaft, and the second pulsator is rotatably sleeved on the pulsator shaft;

[0008] A power transmission assembly transmits the torque of the impeller shaft to the second impeller, so that the same impeller shaft can drive the first impeller and the second impeller to rotate.

[0009] In some embodiments, the first pulsator and the second pulsator rotate in opposite directions.

[0010] In some embodiments, the impeller shaft always rotates synchronously with the second impeller.

[0011] In some embodiments, the second pulsator is spaced apart from the bottom of the washing tub, and the power transmission assembly is at least partially disposed below the second pulsator and supports the second pulsator.

[0012] In some embodiments, in a plane projection perpendicular to the impeller axis, the projection of the first impeller is located within the projection of the second impeller.

[0013] In some embodiments, the power transmission assembly is disposed in the washing tub and below the second impeller.

[0014] In some embodiments, the power transmission assembly includes a power input gear, a power output gear and a reversing gear set, wherein the power input gear is used to receive the torque of the impeller shaft, the power output gear is used to output the torque to the second impeller, and the reversing gear set meshes and transmits between the power input gear and the power output gear and causes the power input gear and the power output gear to rotate in opposite directions.

[0015] In some embodiments, the power input gear is sleeved on the impeller shaft and is locked with the impeller shaft; the power output gear is rotatably sleeved on the impeller shaft and is locked with the second impeller, so that the torque of the impeller shaft is transmitted to the second impeller through the power transmission assembly.

[0016] In some embodiments, the washing device includes a dehydration shaft sleeved outside the impeller shaft, and the dehydration shaft is connected to the washing drum; the power transmission assembly includes a gear mounting frame, the reversing gear set is arranged on the gear mounting frame, the gear mounting frame is provided with a first through hole, the dehydration shaft and the impeller shaft are passed through the first through hole, and the gear mounting frame is stationary relative to the washing drum.

[0017] In some embodiments, the dehydration shaft is anti-rotatably engaged with the first through hole.

[0018] In some embodiments, the gear mounting frame includes a chassis and a plurality of bosses protruding from the top surface of the chassis, the first through hole is arranged on the chassis, and each reversing gear in the reversing gear set is rotatably mounted on the corresponding boss.

[0019] In some embodiments, the power input gear is fastened to the impeller shaft, and the power input gear is located below the power output gear and carries the power output gear and the second impeller.

[0020] In some embodiments, the second impeller includes a impeller body and a connecting disk, the central area of ​​the impeller body is provided with an avoidance area, the connecting disk is arranged in the avoidance area, the second impeller is rotatably mounted on the impeller shaft through the connecting disk, and the power output gear is carried on the bottom side of the connecting disk and is engaged with the connecting disk to prevent rotation.

[0021] In some embodiments, the reversing gear set includes two reversing gears, the tooth width of the first reversing gear along the torque transmission direction is smaller than the tooth width of the second reversing gear, the first reversing gear is meshed with the lower part of the second reversing gear, and the power output gear is meshed with the upper part of the second reversing gear.

[0022] The washing device in the embodiment of the present application realizes active rotation of the first impeller and the second impeller through the same impeller shaft, which can generate a strong water flow and improve the washing effect of clothes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a partial structure of a washing device according to an embodiment of the present application;

[0024] Figure 2 for Figure 1 A schematic diagram of another view of the structure shown;

[0025] Figure 3 For along Figure 2 Sectional view in the AA direction;

[0026] Figure 4 for Figure 3 A partial enlarged schematic diagram of point D in the middle;

[0027] Figure 5 for Figure 4 The schematic diagram after omitting the first impeller and the impeller body;

[0028] Figure 6 A partial exploded schematic diagram of a pulsator assembly according to an embodiment of the present application;

[0029] Figure 7 for Figure 6 A schematic diagram of another perspective of the first impeller in FIG.

[0030] Figure 8 for Figure 6 A schematic diagram of another perspective of the second impeller in FIG.

[0031] Fig. 9 for Figure 6 Schematic diagram of the explosion of the second impeller;

[0032] Fig.10 for Fig. 9 A schematic diagram of another perspective of the impeller body;

[0033] Fig.11 for Fig. 9 A schematic diagram of another perspective of the connection disk in FIG.

[0034] Fig.12 This is a schematic structural diagram of a gear mounting frame according to an embodiment of the present application;

[0035] Fig.13 for Fig.12 A schematic diagram of another view of the structure shown;

[0036] Fig.14 For along Fig.13 Cross-sectional view in CC direction;

[0037] Fig.15 This is a schematic diagram of the structure of a power output gear according to an embodiment of the present application, wherein the circumferentially arranged teeth are omitted;

[0038] Fig.16 for Fig.15 A schematic diagram of another view of the structure shown;

[0039] Fig.17 For along Fig.16 Cross-sectional view along the BB direction.

[0040] Description of Reference Numerals

[0041] Washing drum 1; drum body 11; drum bottom 12; washing chamber 1a; access opening 1b; water storage tub 2;

[0042] Impeller assembly 3; first impeller 31; first toggle ridge 311; first connecting hole 31a; slot 31b; spline 312; second impeller 32; impeller body 321; avoidance area 321a; second toggle ridge 3211; connecting plate 322; positioning column 3221; screw hole 322b; impeller shaft 41; dehydration shaft 42; nut 43; retaining spring 44; fastening screw 45; power transmission assembly 5; power input gear 51; power output gear 52; positioning hole 52a; second connecting hole 52b; reversing gears 53a, 53b; gear mounting frame 54; chassis 541; through hole 541a; boss 542; clutch 6; motor 7 DETAILED DESCRIPTION

[0043] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0044] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "top", "bottom", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0045] An embodiment of the present application provides a washing device, and the type of the washing device is not limited, and can be a washing machine, a shoe washing machine, a fruit and vegetable washing machine, a dishwasher, a steam mop, etc.

[0046] For example, in the embodiments of the present application, the washing device is a washing machine and the washing items are clothes.

[0047] See also Figure 1 , Figure 2 as well as Figure 3 The washing device comprises a washing tub 1, a pulsator assembly 3, a pulsator shaft 41 and a power transmission assembly 5. A washing chamber 1a is provided in the washing tub 1, and the top side of the washing chamber 1a is opened to form a loading and unloading opening 1b, through which a user can load and unload clothes from the top of the washing device.

[0048] For example, in some embodiments, please refer to Figure 1 as well as Figure 3 The washing device includes a water tub 2, and a washing tub 1 is arranged in the water tub 2. The washing tub 1 is filled with water through the water tub 2.

[0049] For example, see Figure 3 The washing tub 1 comprises a tub body 11 and a tub bottom 12. The tub body 11 is open at both ends, and the tub bottom 12 is arranged at the open portion of the lower end of the tub body 11. The tub body 11 and the tub bottom 12 may be made of the same material or different materials. For example, the tub body 11 is made of metal, and the tub bottom 12 is made of plastic.

[0050] The impeller assembly 3 is disposed in the washing tub 1. Figure 6 The pulsator assembly 3 includes a first pulsator 31 and a second pulsator 32. The pulsator assembly 3 plays the role of water removal and agitation of clothes. Figure 6 A plurality of protruding first stirring ridges 311 are formed on the top side of the first impeller 31 , and a plurality of protruding second stirring ridges 3211 are formed on the top side of the second impeller 32 , so as to facilitate stirring of clothes and agitation of water flow above the impeller assembly 3 .

[0051] It can be understood that the impeller assembly 3 is arranged above the cylinder bottom 12 and close to the cylinder bottom 12.

[0052] Exemplarily, the top end of the impeller shaft 41 passes through the bottom 12 from below the bottom 12 and extends into the washing chamber 1a.

[0053] The first impeller 31 is arranged on the impeller shaft 41 to rotate synchronously and at the same speed as the impeller shaft 41. That is to say, there is neither a time difference nor a speed difference between the rotation of the impeller shaft 41 and the rotation of the first impeller 31. It should be noted that the synchronization refers to maintaining a synchronous relationship in time, and the two start and stop moving at substantially the same time.

[0054] It should be noted that the second impeller 32 and the impeller shaft 41 may rotate synchronously at the same angular velocity, or may rotate synchronously at different angular velocities.

[0055] The specific connection method between the first impeller 31 and the impeller shaft 41 is not limited, as long as the impeller shaft 41 can transmit the torque to the first impeller 31 synchronously and at the same speed.

[0056] For example, in some embodiments, please refer to Figure 7 The center area of ​​the bottom side of the first impeller 31 is provided with a slot 31b, the inner wall of the slot 31b is formed with a protruding spline 312, the circumferential surface of the top end of the impeller shaft 41 is provided with a spline groove, the top end of the impeller shaft 41 is inserted into the slot 31b, the spline 312 and the spline groove are locked, and the first impeller 31 and the impeller shaft 41 are transmitted in the circumferential direction. That is to say, in this embodiment, the first impeller 31 and the impeller shaft 41 are directly connected.

[0057] Exemplarily, in some other embodiments, the first impeller 31 and the impeller shaft 41 can be connected by a hinge, the lower end of the hinge is hinged to the impeller shaft 41, and the upper end of the hinge can cooperate with the first impeller 31 through a spline and a spline groove. The hinge drives the first impeller 31 to rotate synchronously and at the same speed as the impeller shaft 41. During the rotation of the first impeller 31, the first impeller 31 can swing up and down along the hinge point relative to the impeller shaft 41.

[0058] For some examples, see Figure 4 and Figure 6 A first connecting hole 31a is provided in the central area of ​​the top side of the first impeller 31. A screw passes through the first connecting hole 31a from top to bottom and is screwed into the interior of the impeller shaft 41, so as to realize a fastening connection between the impeller shaft 41 and the first impeller 31, better position the first impeller 31, and prevent the first impeller 31 from being separated from the impeller shaft 41.

[0059] The second impeller 32 is rotatably mounted on the impeller shaft 41 , that is, the second impeller 32 and the impeller shaft 41 can have relative movement, and the impeller shaft 41 will not directly transmit the torque to the second impeller 32 .

[0060] In the embodiment of the present application, the first impeller 31 and the second impeller 32 are arranged roughly coaxially, and both are roughly rotated around the axis of the impeller shaft 41. It should be noted that in the embodiment where the first impeller 31 can swing up and down, there is a small swing angle between the rotation center line of the first impeller 31 and the axis of the impeller shaft 41.

[0061] For example, see Figure 3 and Figure 4The washing device includes a dehydration shaft 42, which is sleeved on the outer surface of the impeller shaft 41, that is, the dehydration shaft 42 and the impeller shaft 41 are nested, and the top end of the dehydration shaft 42 is connected to the washing tub 1 to drive the washing tub 1 to rotate.

[0062] The washing device includes a dehydration state and a washing state. In the washing state, the dehydration shaft 42 does not transmit torque, that is, the dehydration shaft 42 does not drive the washing tub 1 to rotate, and the washing tub 1 is substantially in a stationary state; the impeller shaft 41 drives the impeller assembly 3 to rotate, and the impeller assembly 3 rotates relative to the washing tub 1. In the dehydration state, the impeller shaft 41 and the dehydration shaft 42 are locked, and the washing tub 1 and the impeller assembly 3 rotate synchronously, in the same direction and at the same speed. In this state, there is basically no relative movement between the first impeller 31, the second impeller 32, and the washing tub 1.

[0063] It should be noted that during washing, the impeller shaft 41 rotates at a low speed, for example, maintaining 30 to 40 revolutions per minute, and during dehydration, the impeller shaft 41 and the dehydration shaft 42 rotate at a high speed, for example, greater than 500 revolutions per minute.

[0064] For example, see Figure 3 The washing device includes a clutch 6 and a motor 7. The clutch 6 receives the torque of the motor shaft of the motor 7, and the clutch 6 can always transmit the torque to the impeller shaft 41. The clutch 6 can selectively transmit or not transmit the torque to the dehydration shaft 42. Specifically, when the clutch 6 is engaged, the clutch 6 transmits the torque to the dehydration shaft 42, the dehydration shaft 42 and the impeller shaft 41 are locked, and the two rotate in the same direction and at the same speed. The dehydration shaft 42 transmits the torque to the washing drum 1, and the washing drum 1, the first impeller 31 and the second impeller 32 rotate in the same direction, synchronously and at the same speed; when the clutch 6 is disengaged, the transmission between the dehydration shaft 42 and the clutch 6 is disconnected, and the torque of the clutch 6 will not be transmitted to the dehydration shaft 42, and the dehydration shaft 42 has no power input, so the dehydration shaft 42 and the washing drum 1 will not rotate.

[0065] It should be noted that, in the embodiments of the present application, the same direction refers to the same rotation direction, for example, both are clockwise or both are counterclockwise. The same speed refers to the same angular velocity.

[0066] The power transmission assembly 5 transmits the torque of the impeller shaft 41 to the second impeller 32, so that the same impeller shaft 41 can drive the first impeller 31 and the second impeller 32 to rotate. That is to say, the impeller shaft 41 indirectly drives the second impeller 32 to rotate through the power transmission assembly 5. The first impeller 31 and the second impeller 32 both rotate actively rather than passively under the action of water flow. Therefore, the corresponding rotation relationship between the first impeller 31 and the second impeller 32 is determined rather than random.

[0067] The washing device of the embodiment of the present application realizes the rotation of the first impeller 31 and the second impeller 32 through the same impeller shaft 41, and there is no need to provide another impeller shaft for the second impeller 32, thereby simplifying the structure; the first impeller 31 and the second impeller 32 are both actively rotated, and can reliably generate strong water flow, thereby improving the clothing washing effect.

[0068] The power transmission assembly 5 can be arranged at any appropriate position according to the actual situation. Figure 3 , the power transmission assembly 5 is arranged in the washing tub 1 and is located below the second impeller 32. That is to say, the power transmission assembly 5 is not arranged in the above-mentioned clutch 6, but is arranged in the washing chamber 1a. On the one hand, there is a large installation space in the washing chamber 1a, which is convenient for assembling the power transmission assembly 5. On the other hand, there is no need to change the structure of the existing clutch 6, and the clutch 6 already available in the prior art can be used. The joint of the impeller shaft 41 and the clutch 6, the joint of the dehydration shaft 42 and the clutch 6, and the structural arrangement of the impeller shaft 41 and the dehydration shaft 42 can all maintain the existing design. Therefore, on the basis of the existing washing equipment, dual-impeller power drive can be achieved at a lower cost.

[0069] It should be noted that in the field of washing equipment, the clutch 6 is equipped with a planetary reduction gear set, and the clutch 6 reduces the high-speed rotation of the motor shaft to the low-speed rotation of the impeller shaft 41 through the planetary reduction gear set. Therefore, the manufacturing accuracy, complexity, and professional tool assembly of the clutch 6 are relatively high.

[0070] In the related art, some washing equipment is equipped with two impeller shafts for double impellers, each impeller shaft drives a impeller, and the lower ends of the two impeller shafts are engaged with the clutch. Therefore, the clutch is subjected to complex structural transformation, making the clutch a three-power output clutch. Specifically, the clutch needs to output power to the two impeller shafts respectively, and also to output power to the dehydration shaft. Therefore, the structure of the clutch is relatively complex, and the manufacturing and assembly are difficult and costly, which is not conducive to productization.

[0071] The washing equipment of the embodiment of the present application does not require structural changes to the existing clutch 6, and therefore can use the clutch 6 already available on the market without the need for personalized customization, which can effectively reduce the purchase risk and material stagnation risk of the clutch 6 and is conducive to productization.

[0072] It should be noted that the first pulsator 31 and the second pulsator 32 may rotate in the same direction or in opposite directions. In the embodiment where the first pulsator 31 and the second pulsator 32 rotate in the same direction, the two pulsators may rotate at a differential speed, that is, the two pulsators have different rotation angular velocities.

[0073] Exemplarily, the first pulsator 31 and the second pulsator 32 rotate in opposite directions. That is, in the process of transmitting torque, the power transmission component 5 reverses the torque, so that the torque direction of the second pulsator 32 is opposite to the torque direction of the pulsator shaft 41, and thus the rotation direction of the second pulsator 32 is opposite to the rotation direction of the first pulsator 31. For example, when the first pulsator 31 rotates in the counterclockwise direction, the second pulsator 32 rotates in the clockwise direction; when the first pulsator 31 rotates in the clockwise direction, the second pulsator 32 rotates in the counterclockwise direction.

[0074] During the rotation of the first impeller 31 and the second impeller 32, the clothes can be relieved from twisting and tangling in one direction, which can effectively reduce the entanglement of clothes. Exemplarily, the second impeller 32 always rotates synchronously with the impeller shaft 41. In other words, there will be no situation where the second impeller 32 does not move while the impeller shaft 41 rotates, and the motion relationship between the impeller shaft 41 and the second impeller 32 is determined. Regardless of the load of the second impeller 32, the impeller shaft 41 can always drive the second impeller 32 to rotate through the power transmission assembly 5, ensuring the rotation reliability and certainty of the second impeller 32.

[0075] It should be noted that, among the first impeller 31 and the second impeller 32, any one of them is an inner impeller and the other is an outer impeller. The relationship between the inner impeller and the outer impeller is: in the plane projection perpendicular to the impeller axis, the projection of the inner impeller is located inside the projection of the outer impeller. In addition, in order to facilitate assembly, along the circumference of the impeller axis, the inner impeller is located above the outer impeller, that is, the sleeve connection portion between the inner impeller and the impeller axis is located above the sleeve connection portion between the outer impeller and the impeller axis. For example, refer to Figure 2 , the first impeller 31 is an inner impeller, and the second impeller 32 is an outer impeller, that is, in the plane projection perpendicular to the impeller shaft 41, the projection of the first impeller 31 is located inside the projection of the second impeller 32. In this embodiment, the first impeller 31 is arranged on the top of the impeller shaft 41, roughly in an umbrella shape, which is convenient for the assembly of the first impeller 31 and the impeller shaft 41. In addition, for the convenience of assembly, please refer to Figure 3 and Figure 4 Along the axial direction of the impeller shaft 41 , the socket connection portion between the first impeller 31 and the impeller shaft 41 is located above the socket connection portion between the second impeller 32 and the impeller shaft 41 .

[0076] It can be understood that, in some other embodiments, the first pulsator 31 is an outer pulsator, and the second pulsator 32 is an inner pulsator.

[0077] For example, see Figure 4The second pulsator 32 is spaced apart from the bottom 12 of the washing tub 1, that is, the second pulsator 32 does not rub against the bottom 12 during rotation. The power transmission assembly 5 is at least partially disposed below the second pulsator 32 and carries the second pulsator 32, that is, the second pulsator 32 is carried by the power transmission assembly 5 to achieve positioning and support of the second pulsator 32 in the axial direction.

[0078] In order to facilitate the positioning of the second impeller 32 in the axial direction, in some embodiments, please refer to Figure 4 A slot is provided in the circumferential direction of the impeller shaft 41, and a retaining spring 44 is retained in the slot. The retaining spring 44 is located above the second impeller 32, and the retaining spring 44 and the power transmission assembly 5 realize bidirectional positioning of the second impeller 32 along the axial direction.

[0079] The torque transmission method of the power transmission assembly 5 is not limited, as long as it can transmit the torque and reverse the torque.

[0080] For example, see Figure 4 and Figure 5 The power transmission assembly 5 includes a power input gear 51, a power output gear 52 and a reversing gear set, wherein the reversing gear set includes at least two reversing gears 53a and 53b to achieve torque reversal. The power input gear 51 is used to receive the torque of the impeller shaft 41, and the power output gear 52 is used to output torque to the second impeller 32.

[0081] The reversing gear set is meshed and transmitted between the power input gear 51 and the power output gear 52, and makes the power input gear 51 and the power output gear 52 rotate in opposite directions. It should be noted that the reversing gear set meshed and transmitted between the power input gear 51 and the power output gear 52 means that the reversing gear set is meshed and transmitted between the power input gear 51 and the power output gear 52 along the torque transmission direction, and is not a limitation on the spatial position relationship.

[0082] The power transmission assembly 5 of the embodiment of the present application realizes torque transmission and torque reversal through gear transmission, and the transmission is reliable.

[0083] It should be noted that the power input gear 51 and the power output gear 52 can be eccentrically arranged relative to the impeller shaft 41, or can be coaxially arranged.

[0084] Exemplarily, in some embodiments, the power input gear 51 and the power output gear 52 are both sleeved on the impeller shaft 41 and arranged along the axial direction of the impeller shaft 41, and the power output gear 52 is located above the power input gear 51. Specifically, the power input gear 51 is sleeved on the impeller shaft 41 and is locked with the impeller shaft 41, that is, there is no relative movement between the power input gear 51 and the impeller shaft 41, and the impeller shaft 41 drives the power input gear 51 to rotate together. The power output gear 52 is rotatably sleeved on the impeller shaft 41 and is locked with the second impeller 32, that is, there is relative movement between the power output gear 52 and the impeller shaft 41, and the power output gear 52 can drive the second impeller 32 to rotate together during the rotation around the impeller shaft 41, so that the torque of the impeller shaft 41 can be transmitted to the second impeller 32 through the power transmission assembly 5.

[0085] For example, the power input gear 51, the power output gear 52 and the reversing gears 53a, 53b in the reversing gear set are all external gears. In other words, the power transmission assembly 5 does not adopt the structural form of internal gear transmission, which can reduce the assembly accuracy requirements.

[0086] For some examples, see Figure 4 and Figure 5 The power transmission assembly 5 includes a gear mounting frame 54, on which the reversing gear set is arranged, and the gear mounting frame 54 provides a mounting support position for the reversing gear set. The gear mounting frame 54 is stationary relative to the washing tub 1, that is, there is no relative movement between the gear mounting frame 54 and the washing tub 1. It can be understood that the gear mounting frame 54 can be connected to the dehydration shaft 42, and the dehydration shaft 42 is used to provide a mounting position for the gear mounting frame 54; the gear mounting frame 54 can also be connected to the tub bottom 12, for example, a screw passes through the gear mounting frame 54 and is screwed into the tub bottom 12.

[0087] For example, see Fig.12 , Fig.13 as well as Fig.14 The gear mounting frame 54 is provided with a first through hole 541a, through which the dehydration shaft 42 and the impeller shaft 41 are inserted, and the first through hole 541a of the gear mounting frame 54 can avoid the dehydration shaft 42 and the impeller shaft 41. It can be understood that the dehydration shaft 42 and the first through hole 541a can be interference fit; or clearance fit; or the size of the first through hole 541a is much larger than the outer diameter of the dehydration shaft 42, and there is no shaft-hole fit relationship between the two.

[0088] In some embodiments, the dehydration shaft 42 and the first through hole 541a are anti-rotationally matched, so that the gear mounting frame 54 does not rotate relative to the dehydration shaft 42, which can improve the installation reliability of the gear mounting frame 54. Exemplarily, the first through hole 541a is a non-circular hole, and the circumferential surface of the shaft section of the dehydration shaft 42 used to match the first through hole 541a is a non-circular surface, so that the anti-rotation fit of the two can be achieved.

[0089] There is no limit to the connection method between the gear mounting frame 54 and the dehydration shaft 42. For example, the washing device includes a nut 43, and the circumferential surface of the dehydration shaft 42 is provided with an external thread. The nut 43 cooperates with the external nut 43 to press the gear mounting frame 54 against the bottom 12 of the washing drum 1, that is, the nut 43 and the bottom 12 clamp the gear mounting frame 54 therebetween.

[0090] During the assembly process, the gear mounting frame 54 is sleeved on the dehydration shaft 42, and then the nut 43 is screwed on the dehydration shaft 42, and the nut 43 is screwed until the nut 43 presses the gear mounting frame 54 against the drum bottom 12. In this way, the structure of the top end of the dehydration shaft 42 can be fully utilized to achieve rapid assembly of the gear mounting frame 54. It is understandable that the nut 43 can be a locking nut to prevent the nut from loosening, so as to improve reliability.

[0091] The specific structure of the gear mounting frame 54 is not limited.

[0092] For example, see Fig.12 , Fig.13 as well as Fig.14 The gear mounting frame 54 includes a chassis 541 and a plurality of bosses 542 protruding from the top surface of the chassis 541, and a first through hole 541a is provided on the chassis 541. The chassis 541 is generally plate-shaped to reduce the installation space required for the chassis 541 in the axial direction. Each reversing gear 53a, 53b in the reversing gear set is rotatably sleeved on the corresponding boss 542.

[0093] The number of the reversing gears 53a and 53b is not limited, and can be two or more.

[0094] For example, see Figure 4 and Figure 5 There are two reversing gears 53a and 53b. The first reversing gear 53a along the torque transmission direction is arranged on a lateral side of the power input gear 51. The tooth width of the first reversing gear 53a along the torque transmission direction is smaller than the tooth width of the second reversing gear 53b along the torque transmission direction. The lower part of the second reversing gear 53b is meshed with the first reversing gear 53a, and the upper part of the second reversing gear 53b is meshed with the power output gear 52. That is to say, the first reversing gear 53a and the power output gear 52 are located on the same side of the second reversing gear 53b.

[0095] For example, when the impeller shaft 41 drives the power input gear 51 to rotate in the counterclockwise direction, the first impeller 31 rotates counterclockwise under the action of the impeller shaft 41, the first reversing gear 53a rotates clockwise, the second reversing gear 53b rotates counterclockwise, the power output gear 52 rotates clockwise, and the second impeller 32 also rotates clockwise under the action of the power output gear 52, that is, the first impeller 31 and the second impeller 32 rotate in opposite directions.

[0096] It should be noted that the transmission ratio between the power input gear 51 and the power output gear 52 can be equal to, greater than, or less than.

[0097] It should be noted that the pitch circle radii of the power input gear 51 and the power output gear 52 may be equal or unequal.

[0098] Exemplarily, in some embodiments, the sum of the pitch circle radius of the power input gear 51 and the pitch circle radius of the first reversing gear 53a is equal to the pitch circle radius of the power output gear 52, so that the two reversing gears 53a and 53b are easily arranged.

[0099] The specific structure of the second impeller 32 is not limited. For example, in some embodiments, please refer to Fig. 9 The second impeller 32 includes an impeller body 321 and a connecting plate 322. The central area of ​​the impeller body 321 is provided with an escape zone 321a which penetrates the impeller body 321 in the axial direction. The connecting plate 322 is provided at the escape zone 321a. The second impeller 32 moves the clothes and stirs the water flow above the second impeller 32 through the impeller body 321. The connecting plate 322 is rotatably sleeved on the impeller shaft 41. The second impeller 32 is sleeved on the impeller shaft 41 through the connecting plate 322. The connecting plate 322 is overlapped with the power output gear 52. The power output gear 52 is carried on the bottom side of the connecting plate 322 and is engaged with the connecting plate 322 to stop rotation.

[0100] For example, see Fig.15 , Fig.16 as well as Fig.17 The power output gear 52 is provided with a plurality of positioning holes 52a, see Fig.11 A plurality of positioning posts 3221 are provided on the bottom side of the connecting disk 322 . The positioning posts 3221 are inserted into the positioning holes 52 a to achieve anti-rotation cooperation between the power output gear 52 and the connecting disk 322 .

[0101] For example, see Fig.15 , Fig.16 as well as Fig.17 The power output gear 52 is provided with a plurality of second connection holes 52b that penetrate the power output gear 52 in the axial direction; see Fig.11The connecting disk 322 is provided with a plurality of screw holes 322b. The screws pass through the second connecting hole 52b from below the power output gear 52 and are screwed into the screw holes 322b of the connecting disk 322 to achieve a fastened connection between the two and prevent the connecting disk 322 from moving axially.

[0102] The material of each component in the above-mentioned power transmission assembly 5 is not limited, as long as it has good structural strength and rigidity, for example, metal material or plastic material can be used.

[0103] Please note that Figure 4 and Figure 5 The power input gear 51 and the power output gear 53 are both sleeved on the impeller shaft 41 located between the top of the dehydration shaft 42 and the bottom of the connecting plate 322.

[0104] Exemplarily, the power input gear 51 is fastened to the impeller shaft 41, for example, see Figure 5 , the power input gear 51 is fastened to the impeller shaft 41 by fastening screws 51. The power input gear 51 is located below the power output gear 52 and carries the power output gear 52 and the second impeller 32. In other words, the gravity of the power output gear 52 and the second impeller 32, as well as the load on the second impeller 32 under the action, are all borne by the power input gear 51. In this way, the power output gear 52 is positioned by the power input gear 51 in the axial direction below and by the connecting disk 322 in the axial direction above, which can reduce the positioning and assembly process of the power output gear 52.

[0105] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0106] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A washing device, characterized in that: include: Washing drum (1); A pulsator assembly (3) disposed in the washing tub (1), the pulsator assembly (3) comprising a first pulsator (31) and a second pulsator (32); a pulsator shaft (41), wherein the first pulsator (31) is arranged on the pulsator shaft (41) to rotate synchronously and at the same speed as the pulsator shaft (41), and the second pulsator (32) is rotatably sleeved on the pulsator shaft (41); a power transmission assembly (5), wherein the power transmission assembly (5) transmits the torque of the impeller shaft (41) to the second impeller (32), so that the same impeller shaft (41) can drive the first impeller (31) and the second impeller (32) to rotate; The first impeller (31) and the second impeller (32) rotate in opposite directions; The impeller shaft (41) always rotates synchronously with the second impeller (32).

2. The washing device according to claim 1, characterized in that: The second impeller (32) is spaced apart from the bottom (12) of the washing tub (1), and the power transmission assembly (5) is at least partially disposed below the second impeller (32) and carries the second impeller (32).

3. The washing device according to claim 1, characterized in that: In a plane projection perpendicular to the impeller axis (41), the projection of the first impeller (31) is located within the projection of the second impeller (32).

4. The washing device according to claim 1, wherein the power transmission assembly is arranged in the washing tub and is located below the second impeller (32).

5. The washing device according to any one of claims 1 to 4, characterized in that: The power transmission assembly (5) comprises a power input gear (51), a power output gear (52) and a reversing gear set, wherein the power input gear (51) is used to receive the torque of the impeller shaft (41), the power output gear (52) is used to output the torque to the second impeller (32), and the reversing gear set is meshed and transmitted between the power input gear (51) and the power output gear (52), so that the power input gear (51) and the power output gear (52) rotate in opposite directions.

6. The washing device according to claim 5, characterized in that: The power input gear (51) is sleeved on the impeller shaft (41) and is locked in rotation with the impeller shaft (41); the power output gear (52) is rotatably sleeved on the impeller shaft (41) and is locked in rotation with the second impeller (32), so that the torque of the impeller shaft (41) is transmitted to the second impeller (32) through the power transmission assembly (5).

7. The washing device according to claim 5, characterized in that: The washing device comprises a dehydration shaft (42) sleeved outside the impeller shaft (41), the dehydration shaft (42) being connected to the washing tub (1); the power transmission assembly (5) comprises a gear mounting frame (54), the reversing gear set being arranged on the gear mounting frame (54), the gear mounting frame (54) being provided with a first through hole (541a), the dehydration shaft (42) and the impeller shaft (41) being passed through the first through hole (541a), and the gear mounting frame (54) being stationary relative to the washing tub (1).

8. The washing device according to claim 7, characterized in that: The dehydration shaft (42) is engaged with the first through hole (541a) to prevent rotation.

9. The washing device according to claim 7, characterized in that: The gear mounting frame (54) comprises a chassis (541) and a plurality of bosses (542) protruding from the top surface of the chassis (541); the first through hole (541a) is arranged on the chassis (541); and each reversing gear in the reversing gear set is rotatably sleeved on the corresponding boss (542).

10. The washing device according to claim 5, characterized in that: The power input gear (51) is fastened to the impeller shaft (41); the power input gear (51) is located below the power output gear (52) and carries the power output gear (52) and the second impeller (32).

11. The washing device according to claim 5, characterized in that: The second impeller (32) comprises an impeller body (321) and a connecting disk (322); a central area of ​​the impeller body (321) is provided with an escape zone (321a); ​​the connecting disk (322) is arranged at the escape zone (321a); ​​the second impeller (32) is rotatably sleeved on the impeller shaft (41) via the connecting disk (322); the power output gear (52) is supported on the bottom side of the connecting disk (322) and is engaged with the connecting disk (322) to prevent rotation.

12. The washing device according to claim 5, characterized in that: The reversing gear set comprises two reversing gears, the tooth width of the first reversing gear (53a) along the torque transmission direction is smaller than the tooth width of the second reversing gear (53b), the first reversing gear (53a) is meshed with the lower part of the second reversing gear (53b), and the power output gear (52) is meshed with the upper part of the second reversing gear (53b).

Images