A washing machine

Abstract

The embodiment of the present application discloses a washing machine, and relates to the technical field of washing machines. The washing machine comprises an outer drum, which can contain washing water; an inner drum, which is rotatably arranged in the outer drum; a pulsator, which is rotatably arranged at the bottom of the inner drum; an inner drum shaft, which is a hollow shaft, and is connected with the inner drum; a driving device, which is arranged at the bottom of the outer drum; and a pulsator shaft assembly, which comprises a pulsator input shaft, a pulsator output shaft and a planetary reducer. The planetary reducer is arranged in the inner drum shaft. The pulsator input shaft is rotatably arranged in the inner drum shaft, and the lower end of the pulsator input shaft is connected with the rotating part of the driving device, and the upper end is connected with the planetary reducer. The pulsator output shaft is rotatably arranged in the inner drum shaft, and the lower end of the pulsator output shaft is connected with the planetary reducer, and the upper end is connected with the pulsator. The washing machine can adapt to the requirement of different rotating speeds during the pulsator washing of the washing machine through the planetary reducer. The present application can be used for washing clothes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of washing machines, in particular to a washing machine. BACKGROUND

[0002] The washing machine is a cleaning electric appliance which uses electric energy to produce mechanical action to wash clothes. More and more people use the washing machine to clean large items such as clothes and bedding, which saves time and effort. The washing machine is becoming an essential household appliance in people's lives. Among them, the deceleration clutch is an important transmission component in the washing machine.

[0003] A deceleration clutch of a washing machine in the related art mainly switches the connection sleeve provided with a clamping tooth and sleeved on the inner drum shaft between the first position, the second position and the third position by pulling the puller to pull the lever, so as to realize the switching between the washing modes of the washing machine. SUMMARY

[0004] Embodiments of the present application provide a washing machine to solve the problem that the components of the deceleration clutch are prone to damage and prone to abnormal noise when the existing washing machine is powered off accidentally.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application provide a washing machine, comprising:

[0006] A washing machine, characterized in that, comprising:

[0007] An outer drum, which can contain washing water;

[0008] An inner drum, which is rotatably arranged in the outer drum;

[0009] A pulsator, which is rotatably arranged at the bottom of the inner drum;

[0010] An inner drum shaft, which is a hollow shaft, and the inner drum shaft is connected with the inner drum;

[0011] A driving device, which is arranged at the bottom of the outer drum;

[0012] A pulsator shaft assembly, which comprises a pulsator input shaft, a pulsator output shaft and a planetary reducer, the planetary reducer is arranged in the inner drum shaft, the pulsator input shaft is rotatably arranged in the inner drum shaft, and the lower end of the pulsator input shaft is connected with the rotating part of the driving device, and the upper end is connected with the planetary reducer; the pulsator output shaft is rotatably arranged in the inner drum shaft, and the lower end of the pulsator output shaft is connected with the planetary reducer, and the upper end is connected with the pulsator;

[0013] Further comprising a locking sleeve, which is sleeved on the inner drum shaft;

[0014] The connecting sleeve and the locking sleeve are sleeved on the inner barrel shaft. The connecting sleeve is key-connected to the inner barrel shaft, and along the axial direction of the connecting sleeve, the connecting sleeve can be engaged with or disengaged from the locking sleeve.

[0015] The washing machine provided by an embodiment of the present invention has a driving device that can drive the impeller input shaft to be transmitted to the impeller output shaft after being decelerated by the planetary reducer, so as to adapt to the different speed requirements of the washing machine impeller when washing clothes. At the same time, when the locking sleeve and the connecting sleeve are engaged, the rotation of the inner shaft due to the internal transmission of the planetary reducer is avoided, thereby realizing the fixation of the inner barrel shaft. When the locking sleeve is disengaged from the connecting sleeve, the inner barrel shaft is in a free state, realizing the hand-rubbing mode in which the impeller shaft has power but the inner barrel shaft has no power during washing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is a three-dimensional structural diagram of a washing machine in some embodiments of the present invention;

[0018] Figure 2 for Figure 1 A cross-sectional view of the washing machine with the cabinet removed;

[0019] Figure 3 for Figure 2 The local structure view of

[0020] Figure 4 for Figure 1 A three-dimensional diagram of the washing machine with the cabinet removed;

[0021] Figure 5 FIG2 is a state diagram of the washing machine in the embodiment of the present invention when it is in the pulsator washing mode;

[0022] Figure 6 for Figure 5 Side view of

[0023] Figure 7 This is a state diagram of the washing machine in the embodiment of the present invention when it is in the hand-rubbing washing mode;

[0024] Figure 8 for Figure 7 Side view of

[0025] Figure 9 1 is a state diagram of the washing machine in the embodiment of the present invention when it is in the inner drum washing mode;

[0026] Figure 10 State diagram of the washing machine in the embodiment of the present application in the dehydration mode;

[0027] Figure 11 Exploded view of the limiting device of the washing machine in the embodiment of the present application;

[0028] Figure 12 Sectional view of the limiting device in the embodiment of the present application;

[0029] Figure 13 Structural schematic diagram of the limiting cam in the limiting device in the embodiment of the present application;

[0030] Figure 14 Structural schematic diagram of the mounting shell in the limiting device in the embodiment of the present application;

[0031] Figure 15 Schematic diagram of the positional relationship between the limiting cam and the push rod when the washing machine in the embodiment of the present application is in the pulsator washing mode;

[0032] Figure 16 Schematic diagram of the positional relationship between the limiting cam and the push rod when the washing machine in the embodiment of the present application is in the hand-wringing washing mode;

[0033] Figure 17 Schematic diagram of another positional relationship between the limiting cam and the push rod when the washing machine in the embodiment of the present application is in the hand-wringing washing mode;

[0034] Figure 18 Schematic diagram of the positional relationship between the limiting cam and the push rod when the washing machine in the embodiment of the present application is in the inner drum washing mode and the dehydration mode;

[0035] Figure 19 State diagram of the limiting device in the embodiment of the present application (when the travel switch is not triggered);

[0036] Figure 20 Another state diagram of the limiting device in the embodiment of the present application (when the travel switch is triggered);

[0037] Figure 21 Schematic diagram of the relationship between the inner drum shaft and the brake belt of the washing machine in some embodiments of the present application.

[0038] Label: box 100; outer barrel 210; inner barrel 220; pulsator 230; fixed carrier 240; fixed shell 241; upper half shell 242; lower half shell 243; fixed frame 244; drain valve 250; brake belt 260; locking sleeve 310; first clamping groove 311; transmission sleeve 320; second clamping groove 321; connecting sleeve 330; first clamping tooth 331; second clamping tooth 332; first elastic member 340; first motor 410; rotating part 411; fixed part 412; pulsator shaft assembly 420; pulsator input shaft 421; pulsator output shaft 422; planetary reducer 423; sun gear 424; outer gear 425; planet carrier 426; planet gear 427; inner barrel shaft 430; inner barrel input shaft 431; inner barrel output shaft 432; connecting cylinder 433; lever assembly 510; lever 511; second elastic member 512; first rotating shaft 513; rotating part 520; rotating body 521; first connecting arm 522; second connecting arm 523; tractor 530; second rotating shaft 540; traction rope 550; intermediate connecting piece 560; connecting hole 561; limiting device 600; limiting cam 610; first profile surface section 611; second profile surface section 612; third profile surface section 613; first groove 614; second groove 615; first protrusion 616; abutment surface 617; protruding part 618; second motor 620; travel switch 630; mounting shell 640; opening 641; first sub-shell 642; second sub-shell 643; avoiding groove 644. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0041] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; for those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0043] As shown in Figure 1 and Figure 2 , the present application provides a washing machine, which comprises a cabinet 100, an outer tub 210, an inner tub 220, a pulsator 230 and a fixed carrier 240. The outer tub 210 is arranged in the cabinet 100, and the outer tub can contain washing water. The inner tub 220 is arranged in the outer tub 210 and can rotate relative to the inner tub. The pulsator 230 is rotatably arranged at the bottom of the inner tub 220. The fixed carrier 240 is located at the bottom of the outer tub 210 and is fixedly connected with the outer tub 210.

[0044] As shown in Figure 2 and Figure 4 , the fixed carrier 240 comprises a fixed shell 241 and a fixed frame 244 connected with the fixed shell 241. The fixed shell 241 comprises an upper half shell 242 and a lower half shell 243 which are closed together and fixedly connected. The upper half shell 242 is fixedly connected with the bottom of the outer tub 210. As shown in Figure 3 and Figure 5 , the fixed frame 244 can be integrally formed with the upper half shell 242 or the lower half shell 243. Alternatively, the fixed frame 244, the upper half shell 242 and the lower half shell 243 can be designed in separate parts, which is not limited here.

[0045] The washing machine further comprises a drain pipeline and a drain valve 250 (as shown in Figure 4 ). The drain pipeline is connected with the outer tub 210. The drain valve 250 is arranged on the drain pipeline. When the drain valve 250 is opened, the water in the inner tub 220 and the outer tub 210 can be drained.

[0046] As shown in Figure 2 and Figure 3 , the washing machine further comprises an inner tub shaft 430, a first motor 410 and a pulsator shaft assembly 420. The first motor 410 as a driving device can also be a belt pulley driving structure, which is not limited here.

[0047] The inner barrel shaft 430 is arranged inside the fixed carrier 240. The inner barrel shaft 430 is a hollow shaft and can rotate relative to the fixed carrier 240 around the center line of the inner barrel shaft 430. A bearing is provided between the inner barrel shaft and the fixed carrier, and the upper end of the inner barrel shaft 430 is connected to the inner barrel 220.

[0048] Among them, the inner barrel shaft 430 can specifically be the following structure, the inner barrel shaft 430 includes an inner barrel input shaft 431, an inner barrel output shaft 432 and a brake disc 433 fixedly connected between the inner barrel input shaft 431 and the inner barrel output shaft 432.

[0049] The impeller shaft assembly 420 includes a impeller input shaft 421, a impeller output shaft 422 and a planetary reducer 423. The planetary reducer 423 is arranged in the inner barrel shaft 430. The impeller input shaft 421 can be rotatably passed through the inner barrel shaft 430, and the lower end of the impeller input shaft 421 is connected to the rotating part (motor rotor) 0411 of the first motor 410, and the upper end is connected to the planetary reducer 423; the impeller output shaft 422 can be rotatably passed through the inner barrel shaft 430, and the lower end of the impeller output shaft 422 is connected to the planetary wheel carrier to realize the connection to the planetary reducer 423, and the upper end is connected to the impeller 230.

[0050] The pulsator input shaft 421 can be inserted into the inner barrel input shaft 431, the pulsator output shaft 422 can be inserted into the inner barrel output shaft 432, and the planetary reducer 423 is arranged in the connecting tube 433. Figure 3 As shown, the planetary reducer 423 includes a sun gear 424, an outer ring gear 425, a planetary carrier 426 and a planetary gear 427. The sun gear 424 is connected to the impeller input shaft 421; the outer ring gear 425 is fixedly connected to the connecting tube 433; the planetary carrier 426 is connected to the impeller output shaft 422; the planetary gear 427 is rotatably connected to the planetary carrier 426 and is engaged between the sun gear 424 and the outer ring gear 425.

[0051] The sun gear 424 can be integrally formed with the pulsator input shaft 421 (eg Figure 3 As shown), it can also be designed in a split manner, which is not specifically limited here.

[0052] The first motor 410 is disposed at the bottom of the outer barrel 210 and may have the following structure: Figure 2 As shown, the first motor 410 includes a rotating portion 411 (rotor) and a fixed portion 412 (stator). The rotating portion 411 is a shell structure, and the fixed portion 412 is disposed inside the rotating portion 411 .

[0053] like Figure 3 and Figure 6 As shown, the washing machine further includes a locking sleeve 310, a transmission sleeve 320, a connecting sleeve 330 and a first elastic member 340;

[0054] As shown in Figure 3 The locking sleeve 310 is fixed on the fixed carrier 240, and the locking sleeve 310 is also sleeved on the inner tub shaft 430. A plurality of first clamping grooves 311 are formed on the locking sleeve 310 and are arranged at intervals in the circumferential direction of the locking sleeve 310. Each first clamping groove 311 extends in the axial direction of the locking sleeve 310. The first clamping groove extends in part of the axial direction of the locking sleeve. Figure 3 As shown in

[0055] As shown in Figure 6 The transmission sleeve 320 is located below the locking sleeve 310, and the transmission sleeve is arranged on the part of the impeller input shaft 421 that is located outside the inner tub shaft 430. The transmission sleeve 320 is provided with a plurality of second clamping grooves 321 arranged at intervals in the circumferential direction of the transmission sleeve 320. Each second clamping groove 321 extends in the axial direction of the transmission sleeve 320.

[0056] As shown in Figure 2 The connecting sleeve 330 is sleeved on the inner tub shaft 430 and located between the locking sleeve 310 and the transmission sleeve 320. The connecting sleeve 330 is connected with the inner tub shaft 430 by a key (such as a spline), and the connecting sleeve 330 can move relative to the inner tub shaft 430 in the axial direction of the connecting sleeve 330, so that the connecting sleeve 330 can engage or disengage the locking sleeve 310. Figure 7 As shown in Figure 10 The connecting sleeve 330 is provided with a plurality of first clamping teeth 331 arranged at intervals in the circumferential direction of the connecting sleeve 330, and a plurality of second clamping teeth 332 arranged at intervals in the circumferential direction of the connecting sleeve 330. Each first clamping tooth 331 and each second clamping tooth 332 extends in the axial direction of the connecting sleeve 330.

[0057] As shown in Figure 2 As shown in Figure 3 The first elastic member 340 is connected with the connecting sleeve 330 and is used to apply a first elastic force to the connecting sleeve 330 in the axial direction of the inner tub shaft 430 and directed to the transmission sleeve 320, so that the connecting sleeve 330 can move in the direction of the transmission sleeve 320 (i.e. downward movement as shown in Figure 3 The first elastic member 340 is used to apply a first elastic force to the connecting sleeve 330 in the axial direction of the inner tub shaft 430 and directed to the connecting sleeve 330.

[0058] When the connecting sleeve 330 is located at the first position, the first elastic member 340 is in a compressed state, and at this time the connecting sleeve 330 is clamped with the locking sleeve 310. When the connecting sleeve 330 is located at the second position, the first elastic member 340 applies a first elastic force to the connecting sleeve 330 in the axial direction of the inner tub shaft 430 and directed to the connecting sleeve 330, so that the connecting sleeve 330 disengages from the locking sleeve 310.

[0059] As shown inFigure 3 As shown, the first elastic member 340 can be a spring, which is sleeved on the inner tub shaft 430 and abuts against the connecting sleeve 330 at one end and the fixed carrier 240 at the other end (or the locking sleeve), and is in a compressed state to apply a first elastic force to the connecting sleeve 330. In addition, the first elastic member 340 can also be a spring sheet arranged between the fixed carrier 240 and the connecting sleeve 330, which is not limited here.

[0060] As shown in Figure 4 , Figure 5 and Figure 6 , the washing machine further comprises a dial lever assembly 510, wherein the dial lever assembly 510 comprises a dial lever 511 and a second elastic member 512 connected to the dial lever 511.

[0061] As shown in Figure 6 , the middle part of the dial lever 511 is rotatably connected to the fixed carrier 240 through a first rotating shaft 513, or the middle part of the dial lever 511 is rotatably connected to the locking sleeve 310.

[0062] The second elastic member 512 is used to apply a second elastic force to the dial lever 511, which can drive the dial lever 511 to rotate along a first direction M around the first rotating shaft 513, so that the lower end of the dial lever 511 abuts against the connecting sleeve 330 to prevent the connecting sleeve 330 from moving towards the transmission sleeve 320; the first direction M is the rotating direction of the lower end of the dial lever 511 to approach the locking sleeve 310.

[0063] The second elastic member 512 can be a torsion spring, which is sleeved on the first rotating shaft 513 and abuts against the fixed carrier 240 or the locking sleeve 310 at a first end and abuts against the dial lever 511 at a second end. In addition to the torsion spring, the second elastic member 512 can also be a common spring, one end of which is connected to the fixed carrier 240 and the other end of which is connected to the dial lever 511.

[0064] As shown in Figure 5 , the washing machine further comprises a rotating member 520 and a puller 530, and the rotating member 520 is rotatably connected to the fixed carrier 240 through a second rotating shaft 540.

[0065] As shown in Figure 5 , the puller 530 is connected to the part of the rotating member 520 deviated from the second rotating shaft 540 through a pulling rope 550, and when the puller 530 pulls the rotating member 520, the rotating member 520 can rotate along a third direction K around the second rotating shaft 540 to abut against the upper end of the dial lever 511, so as to drive the dial lever 511 to rotate along a second direction N around the second rotating shaft 540, so that the dial lever 511 can rotate among the first position, the second position and the third position; the second direction N is opposite to the first direction M.

[0066] AsFigure 5 and Figure 6 As shown, when the lever 511 is located at the first position, the first latching tooth 331 of the connecting sleeve 330 extends into the first latching groove 311 of the locking sleeve 310, so that the connecting sleeve 330 is engaged with the locking sleeve 310; Figure 7 and Figure 8 As shown, when the lever 511 is located at the second position, the connecting sleeve 330 is disengaged from the locking sleeve 310 and the transmission sleeve 320; Figure 9 and Figure 10 As shown, when the lever 511 is located at the third position, the second locking tooth 332 of the connecting sleeve 330 extends into the second locking groove 321 of the transmission sleeve 320 , so that the connecting sleeve 330 is engaged with the transmission sleeve 320 .

[0067] like Figure 10 As shown, the washing machine further includes a limiting device 600, wherein Figure 11 and Figure 12 As shown, the limiting device 600 includes a limiting cam 610 and a second motor 620. Figure 13 As shown, along the circumference of the limiting cam 610, the contour surface of the limiting cam 610 includes a first contour surface segment 611, a second contour surface segment 612, and a third contour surface segment 613 that are spaced apart. The distance between the first contour surface segment 611 and the rotation center axis of the limiting cam 610 is d1, the distance between the second contour surface segment 612 and the rotation center axis is d2, and the distance between the third contour surface segment 613 and the rotation center axis is d3. d1, d2, and d3 satisfy: d1 <d2<d3。

[0068] like Figure 12 As shown, the second motor 620 is used to drive the limiting cam 610 to rotate around the rotation center axis, so that the limiting cam 610 can rotate between the first rotation position, the second rotation position and the third rotation position, as shown in FIG. Figure 5 and Figure 15 As shown, when the limiting cam 610 is located at the first rotation position, the first contour surface segment 611 is arranged opposite to the upper end of the shifting rod 511, so that the shifting rod 511 can be located at the first position; Figure 7 、 Figure 16 as well as Figure 17 As shown, when the limiting cam 610 is located at the second rotation position, the second contour surface segment 612 can be arranged opposite to the upper end of the shifting rod 511 (the second contour surface segment 612 can abut against the upper end of the shifting rod 511 (as shown in FIG. Figure 16 As shown), they can also be set at intervals (as shown Figure 17 As shown), it is used to prevent the lever 511 from rotating around the first rotation axis 513 along the first direction M, so that the lever 511 is located at the second position; Figure 9 、 Figure 10 and Figure 18As shown, when the limiting cam 610 is located at the third rotating position, the third profile surface segment 613 can abut against the upper end of the lever 511 to prevent the lever 511 from rotating about the first rotating shaft 513 in the first direction M, so that the lever 511 is located at the third position.

[0069] The second motor 620 can be a stepping motor (which has a gear reduction system inside to increase torque) or a servo motor, which is not limited here.

[0070] The washing machine has a pulsator washing mode, a hand-washing mode, an inner drum washing mode and a dehydration mode when working, and the working principles of the modes are described as follows:

[0071] (1) Pulsator washing mode: in the pulsator washing mode, as shown in Figure 5 and Figure 15 shown, the puller 530 is in the initial state (that is, the state when the puller 530 is not in action and the pulling distance is 0), and the rotating member 520 is located at the initial position (the position when the puller 530 is not pulled), at this time, the rotating member 520 is not in contact with the upper end of the lever 511, and the lever 511 is located at the first position under the action of the second elastic force applied by the second elastic member 512. Meanwhile, the limiting cam 610 is located at the first rotating position under the driving of the second motor 620, so that the first profile surface segment 611 is oppositely arranged with the upper end of the lever 511. Since the distance d1 from the first profile surface segment 611 to the rotating center axis of the limiting cam 610 is smaller than d2 and d3, when the first profile surface segment 611 is opposite to the upper end of the lever 511, the limiting cam 610 no longer applies force to the lever 511, which can ensure that the lever 511 can smoothly return to the first position from other positions. As shown in Figure 6 shown, when the lever 511 is located at the first position, the first clamping tooth 331 of the connecting sleeve 330 extends into the first clamping groove 311 of the locking sleeve 310 under the action of the lever 511, so that the connecting sleeve 330 is clamped with the locking sleeve 310. Thus, the locking sleeve 310 locks the connecting sleeve 330 and the inner drum shaft 430, so that the inner drum shaft 430 cannot rotate. Figure 2 and Figure 3 shown, when the rotating part 411 of the first motor 410 rotates (which can rotate forward or reversely), the transmission sleeve 320 and the pulsator input shaft 421 are driven to rotate. Since the connecting member and the inner drum shaft 430 are locked by the locking sleeve 310 at this time, the inner drum 220 connected with the upper end of the inner drum shaft 430 does not rotate. Therefore, the power output by the first motor 410 is finally output to the pulsator 230 connected with the upper end of the pulsator output shaft 422 through the pulsator input shaft 421, the planetary reducer 423 and the pulsator output shaft 422, so that the pulsator 230 rotates forward and reversely, thereby realizing the pulsator washing of the clothes in the inner drum 220.

[0072] (2) Hand-wringing washing mode: in the hand-wringing washing mode, as shown in Figure 7 and Figure 18 , the puller 530 pulls the rotating piece 520 to rotate around the second rotating shaft 540 in the third direction K, and the rotating piece 520 abuts against the upper end of the push rod 511 in the rotating process, thereby driving the push rod 511 to rotate to the second position in the second direction N, and at the same time, the limiting cam 610 rotates to the second rotating position under the driving of the second motor 620, so that the second profile section 612 on the limiting cam 610 is arranged opposite to the upper end of the push rod 511, and the second profile section 612 limits the push rod 511, so as to prevent the push rod 511 from rotating around the first rotating shaft 513 in the first direction M, thereby making the push rod 511 located at the second position. As shown in Figure 8 , when the push rod 511 is located at the second position, the connecting sleeve 330 moves towards the direction close to the transmission sleeve 320 under the action of the first elastic force of the first elastic member 340, so that the first clamping teeth 331 on the connecting sleeve 330 is disengaged from the first clamping groove 311 on the locking sleeve 310, at this time, the connecting sleeve 330 neither contacts the transmission sleeve 320 nor contacts the locking sleeve 310, thereby making the inner tub shaft 430 and the inner tub 220 in a free state, as shown in Figure 2 and Figure 3 , at this time, when the first motor 410 drives the pulsator 230 to rotate to wash the laundry through the pulsator input shaft 421, the planetary reducer 423 and the pulsator output shaft 422, the water and the laundry in the inner tub 220 drive the inner tub 220 in the free state to rotate, and since the rotation of the inner tub 220 lags behind the rotation of the pulsator 230, the rotation between the pulsator 230 and the inner tub 220 forms a form simulating hand-wringing laundry

[0073] (3) Inner tub washing mode: as shown in Figure 9 and Figure 18 , in the inner tub washing mode, the puller 530 pulls the rotating piece 520 to rotate around the second rotating shaft 540 in the third direction K, and the rotating piece 520 abuts against the upper end of the push rod 511 in the rotating process, thereby driving the push rod 511 to rotate to the third position in the second direction N, and at the same time, the limiting cam 610 rotates to the third rotating position under the driving of the second motor 620, so that the third profile section 613 on the limiting cam 610 abuts against the upper end of the push rod 511, and the third profile section 613 limits the push rod 511, so as to prevent the push rod 511 from rotating around the first rotating shaft 513 in the first direction M, thereby making the push rod 511 located at the third position; as shown in Figure 9As shown, when the dial lever 511 is located at the third position, the connecting sleeve 330 moves towards the transmission sleeve 320 under the action of the first elastic force of the first elastic member 340, so that the second clamping teeth 332 of the connecting sleeve 330 extend into the second clamping groove 321 of the transmission sleeve 320, so as to enable the connecting sleeve 330 to be clamped with the transmission sleeve 320, thereby enabling the connecting sleeve 330 to be relatively fixed with the transmission sleeve 320 in the circumferential direction of the inner tub shaft 430. Figure 2 and Figure 3 As shown, when the rotating part 411 of the first motor 410 rotates, the rotating part 411 of the first motor 410 not only drives the pulsator 230 to rotate through the pulsator input shaft 421, the planetary reducer 423 and the pulsator output shaft 422, but also drives the inner tub shaft 430 to rotate through the transmission sleeve 320 and the connecting sleeve 330, and further drives the inner tub 220 to rotate. According to the characteristics of the planetary gear 427 in the planetary reducer 423, at this time, the inner tub 220 and the pulsator 230 move simultaneously and in the same direction, so that the inner tub washing can be realized.

[0074] (4) The dehydration mode, in the dehydration mode, as shown in Figure 10 the running state of the traction device 530 is consistent with the running state of the traction device 530 in the inner tub washing mode, but on the basis of the inner tub washing mode, the drain valve 250 is opened, as shown in Figure 2 and Figure 3 when the rotating part 411 of the first motor 410 drives the inner tub 220 and the pulsator 230 to rotate simultaneously and in the same direction, under the action of centrifugal force, the water in the clothes is thrown out and discharged out of the washing machine through the drain valve 250.

[0075] In the washing machine in the embodiment of the application, the second motor 620 drives the limiting cam 610 to rotate to the second rotating position and the third rotating position, so that the profile surface on the limiting cam 610 can abut against the upper end of the dial lever 511 in the hand-wringing washing mode, the inner tub washing mode and the dehydration mode, thereby limiting the dial lever 511, so that even if the traction device 530 suddenly loses power during the working process, the limiting cam 610 can keep the dial lever 511 at the position before the power loss, thereby avoiding the reset of the dial lever 511 when the traction device 530 loses power, and further avoiding the damage of the connecting sleeve 330 to the locking sleeve 310 caused by the contact between the connecting sleeve 330 and the locking sleeve 310, and also avoiding the abnormal sound caused by the contact between the connecting sleeve 330 and the locking sleeve 310, so as to greatly improve the user experience.

[0076] In some embodiments, as shown in Figure 13As shown, along the circumference of the limiting cam 610, the second profile surface segment 612 is located between the first profile surface segment 611 and the third profile surface segment 613. That is, the first profile surface segment 611, the second profile surface segment 612, and the third profile surface segment 613 are arranged in sequence. With this arrangement, when the washing machine switches operating modes, for example, from the pulsator wash mode to the hand-rub wash mode, and then to the spin mode, the second motor 620 drives the limiting cam 610 to rotate in one direction to achieve the switch from the pulsator wash mode to the hand-rub wash mode, and then to the spin mode. The second motor 620 does not need to rotate forward or reverse, thereby facilitating the control of the second motor 620.

[0077] In some embodiments, when the upper end of the lever 511 abuts against the second contour surface segment 612 of the limiting cam 610, in order to better limit the lever 511, as shown in FIG. Figure 13 As shown, the edge of the limiting cam 610 forms a first groove 614, and the first groove 614 is configured as follows: Figure 7 As shown, when the limiting cam 610 is in the second rotation position, the first groove 614 can be engaged with the upper end of the lever 511; the bottom of the first groove 614 is the second contour surface segment 612. Compared with setting the top surface of the protrusion as the second contour surface segment 612 (as shown in FIG. Figures 15 to 18 As shown in the figure, by setting the bottom of the first groove 614 to the second contour surface segment 612, when the upper end of the shifting rod 511 abuts against the second contour surface segment 612, the upper end of the shifting rod 511 extends into the first groove 614, so that the first groove 614 can better limit the shifting rod 511, so that the second position maintained by the shifting rod 511 does not shake significantly.

[0078] In some embodiments, in order to facilitate the contact between the third contour surface segment 613 of the limiting cam 610 and the upper end of the shifting rod 511, as shown in FIG. Figure 13 As shown, the edge of the limiting cam 610 is formed with a first protrusion 616, the first protrusion 616 and the first groove 614 are spaced apart along the circumference of the limiting cam 610, and the top of the first protrusion 616 is formed with an abutment surface 617; the first protrusion 616 is configured as follows: Figure 18As shown, when the limiting cam 610 is located at the third rotating position, the abutting surface 617 of the first protrusion 616 can abut against the upper end of the lever 511; the abutting surface 617 is the third profile surface segment 613. Since the third profile surface segment 613 of the limiting cam 610 abuts against the upper end of the lever 511 when the lever 511 is located at the third position, that is, reaches or approaches the limit position of the lever 511, if the groove bottom of the groove is set as the third profile surface segment 613, the upper end of the lever 511 is not convenient to be clamped into the clamping groove to abut against the third profile surface segment 613, therefore, the abutting surface 617 of the top of the first protrusion 616 is set as the third profile surface segment 613, so that the limiting cam 610 is easily abutted against the abutting surface 617 (the third profile surface segment 613) under the driving of the second motor 620.

[0079] In some embodiments, when the upper end of the lever 511 is opposite to the first profile surface segment 611 of the limiting cam 610, in order to better limit the lever 511, as shown in Figure 13 As shown, the edge of the limiting cam 610 is formed with a second groove 615, which is arranged separately from the first groove 614 and the first protrusion 616 along the circumference of the limiting cam 610; the second groove 615 is configured to: as shown in Figure 15 As shown, when the limiting cam 610 is located at the first rotating position, the second groove 615 can be clamped with the upper end of the lever 511, and the groove bottom of the second groove 615 is the first profile surface segment 611. By setting the groove bottom of the second groove 615 as the first profile surface segment 611, when the upper end of the lever 511 is opposite to the first profile surface segment 611, the upper end of the lever 511 is inserted into the second groove 615, so that the second groove 615 can better limit the lever 511, so that the first position of the lever 511 does not shake greatly.

[0080] In some embodiments, as shown in Figure 11 As shown, the limiting device 600 further comprises a travel switch 630 and a protruding part 618 arranged on the limiting cam 610, the protruding part 618 is configured to: as shown in Figure 20As shown, when the limiting cam 610 is located at the first rotating position, the stroke switch 630 is triggered to stop the second motor 620 from rotating. By setting the stroke switch 630 and the protruding part 618, after the washing machine is powered on again, the second motor 620 can be controlled to rotate in one direction, and then it is determined whether the stroke switch 630 is triggered by the protruding part 618. If the stroke switch 630 is triggered, the second motor 620 is stopped from rotating, and at this time, the limiting cam 610 is located at the first rotating position, and then the rotation of the limiting cam 610 can be controlled according to the normal washing mode. In this embodiment, by setting the stroke switch 630 and the protruding part 618, the first rotating position (i.e., the original position) of the limiting cam 610 can be easily found, so as to ensure the subsequent control of the position accuracy of the limiting cam 610.

[0081] In some embodiments, as shown in Figure 12 , the limiting device 600 further comprises a mounting shell 640 arranged on the fixed carrier 240, the second motor 620 is arranged in the mounting shell 640, and the limiting cam 610 is sleeved on the output shaft of the second motor 620; as shown in Figure 5 , Figure 19 and Figure 20 , the side surface of the mounting shell 640 is provided with an opening 641, the opening 641 is arranged opposite to the lever 511, and when the limiting cam 610 rotates, the second profile section 612 and the third profile section 613 can rotate out of the mounting shell 640 through the opening 641. By arranging the second motor 620 in the mounting shell 640, the mounting shell 640 can protect the motor from water and other impurities, so as to prevent the normal work of the second motor 620. By arranging the opening 641 on the side surface of the mounting shell 640, the limiting cam 610 arranged in the mounting shell 640 can rotate the second profile section 612 and the third profile section 613 out of the mounting shell 640 through the opening 641, so as to facilitate the abutment with the upper end of the lever 511.

[0082] In addition to arranging the limiting cam 610 in the mounting shell 640, the limiting cam 610 can also be arranged outside the mounting shell 640, for example, as shown in Figure 12 , the limiting cam 610 can be arranged on the first side wall a of the mounting shell 640, and the output shaft of the second motor 620 penetrates through the first side wall a of the mounting shell 640 and is connected with the limiting cam 610. As shown in Figure 11 and Figure 12 , the mounting shell 640 can be formed by the first sub-shell 642 and the second sub-shell 643.

[0083] In some embodiments, in order to facilitate the installation of the stroke switch 630, as shown in Figure 19 and Figure 20 , the stroke switch 630 is arranged on the first side wall a of the mounting shell 640.As shown, the limit switch 630 is disposed on the outer wall of the mounting housing 640 and is located at the opening 641. Correspondingly, the protrusion 618 is disposed on the edge of the limit cam 610. The protrusion 618 is configured such that when the limit cam 610 rotates, the protrusion 618 can move with the limit cam 610 through the opening 641 to the outside of the mounting housing 640, thereby triggering the operation of the limit switch 630. Compared to disposing the limit switch 630 on the outer wall of the mounting housing 640, by disposing the limit switch 630 on the outer wall of the mounting housing 640, the limit switch 630 can avoid occupying space inside the mounting housing 640, thereby making the structure inside the mounting housing 640 more compact. At the same time, disposing the limit switch 630 on the outer wall of the mounting housing 640 also facilitates the disassembly and assembly of the limit switch 630.

[0084] Among them, such as Figure 13 As shown, along the circumference of the limit cam 610, the protrusion 618 can be disposed between the first contour surface segment 611 and the second contour surface segment 612, but is not limited thereto. The specific location can be determined based on the installation position of the limit switch 630. The limit switch 630 can be a micro switch, but is not limited thereto, and can also be a roller-type limit switch, etc.

[0085] In some embodiments, as Figure 11 and Figure 14 As shown, an avoidance groove 644 is provided on the inner wall of the mounting housing 640, and the avoidance groove 644 is configured to avoid the movement trajectory of the protrusion 618. By providing the avoidance groove 644 on the inner wall of the mounting housing 640 to avoid the movement trajectory of the protrusion 618, when the protrusion 618 moves into the mounting housing 640, a portion of the protrusion 618 is located in the avoidance groove 644, which greatly reduces the internal space occupied by the protrusion 618 in the mounting housing 640. There is no need to leave a large gap between the limiting cam 610 and the inner wall of the mounting housing 640 to avoid the protrusion 618, thereby facilitating a more compact structural arrangement within the mounting housing 640.

[0086] In some embodiments, as Figure 2 、 Figure 3 and Figure 21 As shown, the washing machine further includes a brake belt 260, which is arranged around the inner barrel shaft 430 along the circumference of the inner barrel shaft 430 (for example, it can be arranged around the connecting cylinder 433), and one end of the brake belt 260 is connected to the fixed carrier 240, and the other end is connected to the portion of the rotating member 520 that deviates from the second rotating shaft 540; the brake belt 260 is configured as follows: Figure 21As shown, when the rotating piece 520 is located at the initial position, the brake band 260 can tightly hold the inner tub shaft 430 to lock the rotation of the inner tub shaft 430; when the rotating piece 520 rotates along the third direction K around the second rotating shaft 540, the brake band 260 can release the inner tub shaft 430 to unlock the rotation of the inner tub shaft 430; wherein the initial position is the position of the rotating piece 520 when the rotating piece 520 is not pulled by the puller 530. When the washing machine is in the pulsator washing mode, the rotating piece 520 is located at the initial position, and the brake band 260 tightly holds the inner tub shaft 430 while the locking sleeve 310 locks the connecting sleeve 330 and the inner tub shaft 430, thereby playing a role of double locking of the inner tub shaft 430, so that the locking effect of the inner tub shaft 430 is better. When the washing machine is in the hand-washing mode, the inner tub washing mode and the dehydration mode, the rotating piece 520 rotates along the third direction K around the second rotating shaft 540 under the pulling of the puller 530, and the brake band 260 releases the inner tub shaft 430 to unlock the rotation of the inner tub shaft 430, so that the inner tub shaft 430 can be in a free state or rotate under the driving of the first motor 410.

[0087] The control mode of the drain valve 250 in the washing machine is not unique. In some embodiments, the drain valve 250 and the puller 530 are controlled separately, that is, the puller 530 is connected with the rotating piece 520 only through the pulling rope 550, and the drain valve 250 is opened or closed under the control of the controller of the washing machine.

[0088] In other embodiments, the drain valve 250 can be controlled to be opened or closed by the puller 530, as shown in Figure 5 As shown, the drain valve 250 is a double-stroke drain valve, and the puller 530 is a double-stroke puller. The puller 530 is connected with the rotating piece 520 and the valve core of the drain valve 250 through the pulling rope 550. As shown in Figure 5 As shown, when the pulling distance of the puller 530 is 0, the lever 511 is located at the first position, and the valve core of the drain valve 250 is located at the position of closing the drain valve 250. As shown in Figure 7 As shown, when the pulling distance of the puller 530 reaches the first stroke, the lever 511 is located at the second position, and the valve core of the drain valve 250 is located at the position of closing the drain valve 250. As shown in Figure 9 and Figure 10 As shown, when the pulling distance of the puller 530 reaches the second stroke, the lever 511 is located at the third position, and the valve core of the drain valve 250 is located at the position of opening the drain valve 250. The drain valve 250 is controlled to be opened or closed by the puller 530, which can realize that one puller 530 controls the lever 511 and the drain valve 250 respectively, thereby simplifying the control of the washing machine, thereby being conducive to reducing the control cost.

[0089] The connection mode of the traction rope 550 with the valve core of the drain valve 250 and the rotating member 520 is not unique. In some embodiments, the traction rope 550 can be directly connected with the valve core of the drain valve 250 and the rotating member 520. In other embodiments, the traction rope 550 can be connected with the valve core of the drain valve 250 and the rotating member 520 through an intermediate connecting member 560. Specifically, as shown in Figure 5 The washing machine further comprises the intermediate connecting member 560 connected between the traction rope 550 and the valve core of the drain valve 250, and the intermediate connecting member 560 is further connected with the rotating member 520. The intermediate connecting member 560 is configured to drive the rotating member 520 to rotate about the second rotating shaft 540 in the third direction K when the intermediate connecting member 560 moves under the traction of the traction rope 550. By arranging the intermediate connecting member 560, the intermediate connecting member 560 connects the traction rope 550, the rotating member 520, and the valve core of the drain valve 250, avoiding the inconvenience of directly connecting the traction rope 550 with the rotating member 520 and the valve core of the drain valve 250, thereby ensuring that the tractor 530 can smoothly transmit the traction force to the rotating member 520 and the valve core of the drain valve 250 when working.

[0090] As shown in Figure 5 The intermediate connecting member 560 can be in the form of a block, but is not limited thereto, and other shapes are also possible.

[0091] In some embodiments, as shown in Figure 5 The rotating member 520 comprises a rotating body 521, a first connecting arm 522, and a second connecting arm 523 connected with the rotating body 521. The rotating body 521 is rotatably connected with the fixed carrier 240 through the second rotating shaft 540. The first connecting arm 522 is connected with the intermediate connecting member 560, and the second connecting arm 523 can abut against the lever 511.

[0092] The connection mode of the rotating member 520 with the intermediate connecting member 560 is not unique. In some embodiments, as shown in Figure 5 The intermediate connecting member 560 is provided with a connecting hole 561. The hole depth direction of the connecting hole 561 is perpendicular to the axial direction of the second rotating shaft 540 and the moving direction of the intermediate connecting member 560. The first connecting arm 522 extends into the connecting hole 561, so that the intermediate connecting member 560 is connected with the rotating member 520. In the moving direction of the intermediate connecting member 560, there is a gap between the first connecting arm 522 and the hole wall of the connecting hole 561, so that the first connecting arm 522 and the intermediate connecting member 560 can move relative to each other. When the intermediate connecting member 560 moves under the traction of the traction rope 550, the hole wall of the connecting hole 561 will generate a thrust force on the first connecting arm 522, so that the rotating body 521 rotates about the second rotating shaft 540 in the third direction K.

[0093] In other embodiments, the first connecting arm 522 of the rotating member 520 may also be hinged to the intermediate connecting member 560 via a hinge axis, where the hinge axis extends in the same direction as the second rotating shaft 540. When the intermediate connecting member 560 moves under the pull of the traction rope 550, the rotating member 520 rotates about the second rotating shaft 540 in the third direction K driven by the hinge structure between the intermediate connecting member 560 and the intermediate connecting member 560.

[0094] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0095] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A washing machine comprising: an outer barrel, wherein the outer barrel can contain washing water; an inner barrel rotatably disposed in the outer barrel; a pulsator, the pulsator being rotatably disposed at the bottom of the inner tub; An inner barrel shaft, which is a hollow shaft and is connected to the inner barrel; a driving device, the driving device being arranged at the bottom of the outer barrel; A pulsator shaft assembly, comprising a pulsator input shaft, a pulsator output shaft, and a planetary reducer, wherein the planetary reducer is disposed in the inner barrel shaft, the pulsator input shaft is rotatably disposed in the inner barrel shaft, and the lower end of the pulsator input shaft is connected to the rotating portion of the drive device, and the upper end is connected to the planetary reducer; the pulsator output shaft is rotatably disposed in the inner barrel shaft, and the lower end of the pulsator output shaft is connected to the planetary reducer, and the upper end is connected to the pulsator; It is characterized in that It also includes a locking sleeve, which is sleeved on the inner barrel shaft; A connecting sleeve, wherein the locking sleeve is sleeved on the inner barrel shaft, the connecting sleeve is key-connected to the inner barrel shaft, and along the axial direction of the connecting sleeve, the connecting sleeve can be engaged with or disengaged from the locking sleeve; A transmission sleeve, the transmission sleeve is fixedly arranged on the impeller input shaft, and the connecting sleeve is located between the locking sleeve and the transmission sleeve; a shift lever, wherein the lower end of the shift lever abuts against the connecting sleeve to engage the connecting sleeve with the locking sleeve; a middle portion of the shift lever is rotatably connected to the locking sleeve; A limiting cam is provided with a contour surface segment, the contour surface segment is arranged opposite to the upper end of the shifting rod, and the contour surface segment can limit the shifting rod.

2. The washing machine according to claim 1, wherein The locking sleeve is fixed on a fixed carrier, and is provided with a plurality of first slots spaced apart along the circumference of the locking sleeve; the transmission sleeve is provided with a plurality of first latching teeth arranged along the circumference of the connecting sleeve; the first latching teeth of the connecting sleeve extend into the first slots of the locking sleeve, so that the connecting sleeve and the locking sleeve are engaged.

3. The washing machine according to claim 2, characterized in that It also includes a first elastic member, which is sleeved on the inner barrel shaft, and one end of the first elastic member abuts against the connecting sleeve, and the other end abuts against the locking sleeve, and is used to apply a first elastic force to the connecting sleeve along the axial direction of the inner barrel shaft and directed towards the connecting sleeve.

4. The washing machine according to claim 3, characterized in that The first elastic member is a spring, and the spring is sleeved on the inner barrel shaft.

5. The washing machine according to claim 2, characterized in that It also includes a second elastic member connected to the shifting rod, and the second elastic member is used to apply a second elastic force to the shifting rod to drive the shifting rod to rotate around the first rotating shaft, so that the lower end of the shifting rod abuts against the connecting sleeve.

6. The washing machine according to claim 5, characterized in that The second elastic member is a torsion spring, and the torsion spring is sleeved on the first rotating shaft.

7. The washing machine according to claim 1, wherein The transmission sleeve is provided with a plurality of second clamping grooves spaced apart along the circumference of the transmission sleeve, and each of the second clamping grooves extends along the axial direction of the transmission sleeve.

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