CN111235816A - Washing machine washing tub assembly and washing machine - Google Patents

Abstract

A washing tub assembly of a washing machine and a washing machine. The washing tub assembly of the washing machine comprises: a large tub, a large tub pulsator and a three-power clutch; the bottom wall of the large tub is provided with a large tub through hole; the large tub pulsator is located in the large tub; the three-power clutch has three The coaxial power output shafts are respectively the first power output shaft, the second power output shaft and the third power output shaft from the outside to the inside, the first power output shaft is connected to the vat, and the first power output shaft is used to drive the vat to rotate; The second power output shaft passes through the through hole of the vat and is connected to the impeller of the vat. The above washing tub assembly of the washing machine replaces the traditional DD variable frequency motor by using a three-power clutch. The three-power clutch can be driven by a common motor. Compared with the expensive DD variable frequency motor, the cost is lower and the overall cost of the washing machine can be reduced. , so that the washing machine with the tub-in-barrel function can more easily serve the public due to the lower price factor.

Description

Washing machine washing tub assembly and washing machine

technical field

The present invention relates to the technical field of pulsator washing machines, in particular to a washing tub assembly of a washing machine and a washing machine.

Background technique

At present, in order to solve the cross-contamination between the clothes washed by traditional washing machines, there have been drum-in-barrel washing machines on the market. A detachable small drum is installed in the washing drum of the traditional pulsator washing machine to wash underwear, socks, and baby clothes. Use a small bucket when washing clothes that need to be separated and washed, and use a large bucket when washing large clothes, so as to achieve separate washing of clothes. For example, the patent with publication number CN105483974A discloses a washing machine and its washing tub. The washing tub includes a large tub, a pulsator and a small tub. By arranging a separate small tub in the large tub, the small tub can be matched with the groove through the positioning column. It can be placed in a large bucket in a way or integrated with the pulsator to form a bucket-in-a-bucket structure. During the washing process, special clothes can be placed in a small bucket, and the water in the large bucket cannot enter the small bucket. The water is thrown from the inclined side wall of the small bucket into the large bucket when it is dried, and flows out with the water in the large bucket, so as to realize the purpose of washing special clothes separately; if you do not need to wash special clothes, the small bucket can be removed from the large bucket. , The assembly method of the positioning column and the groove is easy and quick to disassemble.

However, the existing tub-in-tub washing machine still has the following shortcomings: the existing tub-in-tub washing machine is mainly driven by a DD (direct driver, direct drive) variable frequency motor. The DD variable frequency motor itself has a complex structure and high cost, which pushes up the The cost of the whole machine makes the price of the tub-in-barrel washing machine relatively high. Due to the price factor, it is difficult for the tub-in-barrel washing machine to serve the public.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a washing tub assembly of a washing machine that can reduce costs and a washing machine including the washing tub assembly of the washing machine.

A washing tub assembly of a washing machine, comprising: a large tub, a large tub pulsator and a three-power clutch; the bottom wall of the large tub is provided with a large tub through hole; the large tub pulsator is located in the large tub; the three-power clutch has Three coaxial power output shafts are respectively a first power output shaft, a second power output shaft and a third power output shaft from the outside to the inside, the first power output shaft is connected to the vat, the first power output shaft is The output shaft is used to drive the vat to rotate; the second power output shaft passes through the through hole of the vat and is connected to the vat pulsator, and the second power output shaft is used to drive the vat pulsator to rotate.

In one of the embodiments, it also includes a large barrel flange, the large barrel flange is fixedly connected to the outer side of the bottom wall of the large barrel, and a large barrel flange through hole is opened in the middle of the large barrel flange, so A first bearing ring is fixed outside the first power output shaft, the first bearing ring is fixedly connected with the side of the vat flange away from the vat, and the first power output shaft drives the shaft through the vat flange. When the vat rotates, the second power output shaft sequentially passes through the vat flange piercing hole and the vat piercing hole, and is connected to the vat pulsator.

In one embodiment, the first bearing ring is provided with a plurality of fixing holes, the large barrel flange is provided with a plurality of through holes corresponding to the fixing holes on the first bearing ring, and the first bearing ring is provided with a plurality of through holes corresponding to the fixing holes. A plurality of fixing holes of a bearing ring and a plurality of through holes on the flange of the vat are respectively fixed by a screw.

In one embodiment, the plurality of fixing holes of the first bearing ring are distributed in a circular array with the first power output shaft as the center.

In one embodiment, a plurality of fixing posts are protruded on the outer side of the bottom wall of the vat, the fixing posts are provided with screw holes, and the flange of the vat is provided with a plurality of perforations corresponding to the fixing posts, and several The screw holes on the fixing column and the plurality of through holes on the flange of the vat are respectively fixed by a screw.

In one of the embodiments, the middle part of the flange of the vat protrudes upward, the through hole of the flange of the vat and a plurality of the through holes are all arranged in the protruding area of the flange of the vat, The perforations are all arranged in the non-protruding area of the flange of the vat.

In one of the embodiments, it also includes a large bucket pulsator flange, the large bucket pulsator flange is fixedly connected with the side surface of the large bucket pulsator close to the wall of the large bucket bottom, and the large bucket pulsator flange is A fastening hole is opened in the middle of the second power output shaft, a limit ring is fixed outside the second power output shaft, and the end of the second power output shaft extends out of the limit ring, and the second power output shaft extends out of the limit ring. The part of the limit ring includes a connected fastening part and a screwing part, the fastening part is arranged adjacent to the limit ring, and the large bucket pulsator flange is fixed on the fastening part through the fastening hole. outside the solid part, and the large bucket pulsator flange is in contact with the limit ring, the screw part is screwed with a fixing screw ring, and the fixed screw ring is in contact with the large bucket pulsator flange. connected, the second power output shaft is used to drive the large bucket pulsator to rotate through the large bucket pulsator flange.

In one embodiment, the large bucket pulsator flange has a star-shaped structure, and through holes are provided at several end corner positions of the large bucket pulsator flange, and the large bucket pulsator is adjacent to the large bucket pulsator. One side of the bottom wall of the large barrel is provided with a plurality of large barrel screw holes corresponding to the piercing holes, and each of the piercing holes and each of the large barrel screw holes are respectively fixed in one-to-one correspondence with a screw.

In one embodiment, it further includes an outer tub, the large tub is located in the outer tub, a tub mounting hole is opened on the bottom wall of the outer tub, and the three power clutches are fixed on the bottom of the outer tub On the outer side of the wall, and the three coaxial power output shafts of the three power clutches all pass through the outer barrel mounting hole.

A washing machine includes the washing tub assembly of the washing machine as described in any of the above embodiments.

The above washing machine washing tub assembly is applied to a tub-in-tub washing machine. The traditional DD variable frequency motor is replaced by a three-power clutch. The three-power clutch can provide power drive through a common motor. The total cost of the three-power clutch and the common motor is relatively expensive. The DD variable frequency motor has a lower cost, which can reduce the overall cost of the washing machine, so that the washing machine with the bucket-in-a-bucket function can more easily serve the public due to the lower price factor. In addition, the above-mentioned washing tub assembly of the washing machine adopts three power clutches to carry out power transmission of the large tub and the large tub pulsator, and the installation process is relatively simple. The three-power clutch can be driven by a common motor. Compared with the traditional DD motor driving method, a cheaper common motor and three-power clutch can be selected, which can reduce the production cost and make the washing machine with the bucket-in-bucket function possible. Because of the lower price factor, it is easier to serve the public.

Description of drawings

Fig. 1 is a schematic structural diagram of a washing machine of an embodiment; Fig. 2 is a schematic structural diagram of a washing machine of an embodiment; Fig. 3 is an exploded view of some components of Fig. 2; Fig. 4 is a partial structural diagram of a three-power clutch; A cross-sectional view of a washing machine according to an embodiment; FIG. 6 is a partial structure diagram of a washing machine according to an embodiment; FIG. 7 is a partial structure diagram of a washing machine according to an embodiment; FIG. 8 is an exploded view of a partial structure of the washing machine according to an embodiment; 9 is another perspective view of FIG. 8; FIG. 10 is a partial structural view of the washing machine of an embodiment; FIG. 11 is a partial structural schematic diagram of the washing machine of an embodiment; 13 is a partial cross-sectional view of a small tub of an embodiment; FIG. 14 is a partial cross-sectional view of a small tub with a water retaining ring installed in an embodiment; FIG. 15 is a partial structural view of a washing machine of an embodiment; Fig. 17 is a partial structure diagram of a washing machine according to an embodiment; Fig. 18 is a partial exploded sectional view of a washing machine according to an embodiment; Fig. 19 is a partial sectional view of the washing machine according to an embodiment; 20 is a schematic structural diagram of a small tub pulsator of a washing machine according to an embodiment; FIG. 21 is a structural schematic diagram of a small tub pulsator of a washing machine according to an embodiment.

Detailed ways

In order to facilitate the understanding of the present invention and to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Numerous specific details are set forth in the following description to provide a thorough understanding of the invention, and preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure will be provided. It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms or nomenclature used herein are for the purpose of describing particular embodiments only, and are not intended to limit the present invention.

For example, a washing tub assembly of a washing machine includes: a large tub, a large tub pulsator and a three-power clutch; the bottom wall of the large tub is provided with a large tub through hole; the large tub pulsator is located in the large tub; the three power The clutch has three coaxial power output shafts, which are respectively a first power output shaft, a second power output shaft and a third power output shaft from the outside to the inside, the first power output shaft is connected to the vat, the first power output shaft A PTO shaft is used to drive the vat to rotate; the second PTO shaft passes through the through hole of the vat and is connected to the vat pulsator, and the second PTO shaft is used to drive the vat pulsator turn. In one of the embodiments, the washing tub assembly of the washing machine includes the related structures of the following embodiments, including but not limited to a large tub, a large tub pulsator, a three-power clutch, and the like.

In order to further illustrate the washing tub assembly of the washing machine, as another example, please refer to FIG. 1 to FIG. 3 , a washing machine includes an outer tub, a large tub 110 , a large tub pulsator 120 , a small tub 130 , a small tub pulsator 140 and a driving device , the large bucket 110 is accommodated in the outer bucket, the large bucket pulsator 120 is accommodated in the large bucket 110, the small bucket 130 is arranged on the large bucket pulsator 120, and the small bucket 130 is accommodated in the large bucket 110, and the small bucket pulsator 140 accommodates in the keg 130. The driving device is used to drive the large barrel 110, the large barrel pulsator 120, the small barrel 130 and the small barrel pulsator 140 to rotate respectively. The driving device has a transmission shaft, and different transmission shafts correspond to the large barrel, the large barrel pulsator and the small barrel pulsator respectively. Independently drive the large barrel, the large barrel pulsator and the small barrel pulsator to rotate.

It should be noted that the outer tub in this embodiment plays a role of overall support and installation. For example, the washing machine further includes a case in which the outer tub is located. For the specific settings of the outer barrel and the box, please refer to the prior art. The large tub in this embodiment, which is equivalent to the washing tub of a conventional pulsator washing machine, is used for washing clothes. When the washing machine only includes an outer tub, a large tub and a large tub pulsator, it is similar to a traditional ordinary pulsator washing machine. The clothes in the large tub mainly disturb the water flow through the large tub pulsator, and combine with the ribs on the inner side wall of the large tub to complete the cleaning process. Washing of clothes. The small bucket in this embodiment is an additional small bucket on the basis of the traditional ordinary pulsator washing machine. The small bucket is installed on the large bucket pulsator, and the small bucket can be used for washing some special clothes, such as washing underwear, socks, baby clothes, etc. Clothes that need to be washed separately, such as baby clothes. In this way, cross-contamination during laundry washing can be avoided. The design of the traditional keg can be referred to as the keg in the patent document CN105483974A. In other embodiments of the present application, improved technical designs for traditional kegs are also proposed.

It should be noted that the applicant adopts DD (direct driver, direct driver) in the tub-in-a-tub washing machine shown in FIG. ) frequency conversion motor to drive the vat and vat pulsator to rotate respectively. However, with such a product design, the DD variable frequency motor itself has a complex structure and high cost, which pushes up the cost of the whole machine and makes the tub-in-tub washing machine more expensive. Due to price factors, it is difficult for the tub-in-tub washing machine to serve the public. In order to reduce the cost of the traditional tub-in-tub washing machine, in one embodiment, the driving device is a three-power clutch 150, and the three-power clutch 150 is disposed on the outer side of the bottom wall of the outer tub. Of course, the three power clutches may not be fixed on the outer side of the bottom wall of the outer tub. In this embodiment, the cost of the washing machine can be greatly reduced by using the three-power clutch combined with the traditional common motor. Specifically, please refer to FIG. 4 , the three power clutches 150 have three coaxial power output shafts, which are a first power output shaft 151 , a second power output shaft 152 and a third power output shaft 153 respectively from the outside to the inside. For example, three coaxial PTO shafts are sequentially sleeved from outside to inside and can rotate independently. The first power output shaft 151 is used to drive the vat 110 to rotate, and the second power output shaft 152 is used to drive the vat pulsator 120 to rotate. In order to facilitate the three power shafts of the three-power clutch to pass through the bottom wall of the outer barrel, for example, a barrel mounting hole is opened on the bottom wall of the outer barrel, the three-power clutch is fixed on the outer side of the bottom wall of the All three PTO shafts pass through the barrel mounting holes. It should be noted that the above-mentioned three-power clutch and the common motor used for driving the three-power clutch can be purchased from the market. For example, referring to FIG. 2, the three-power clutch 150 has a transmission gear 154, and a common motor drives the transmission gear of the three-power clutch through a belt to provide capacity for the three-power clutch. Of course, an ordinary motor is a motor different from a DD motor or a rotary motor with a rotating shaft.

Please refer to FIG. 3 and FIG. 5 , the first power output shaft 151 is connected to the vat 110, and the first power output shaft is used to drive the vat to rotate. Specifically, for example, the first power output shaft 151 is fixedly connected to the vat 110 . In another example, the first power take-off shaft is connected to the bottom wall of the vat. For another example, the first power output shaft is fixedly connected to the outside of the bottom wall of the vat. In order to better realize the connection between the first power output shaft and the large tub, in one embodiment, please refer to FIG. 5 and FIG. 6 , the washing machine further includes a large tub flange 180 , and the large tub flange 180 is fixed to the outside of the bottom wall of the large tub 110 . Connection, the first power output shaft 151 is fixedly connected to the vat flange 180. The first power output shaft 151 is used to drive the vat 110 to rotate through the vat flange 180. By setting the vat flange, the vat flange is connected to the vat bottom. The outside of the wall has a large contact area, which facilitates the transfer of torque to the vat. In order to better realize the fixed connection between the flange of the vat and the outside of the bottom wall of the vat, in one embodiment, a number of screw holes are provided on the outside of the bottom wall of the vat, and the flange of the vat is provided with a number of perforations 183 corresponding to the screw holes. , the screw holes on the fixing columns and the through holes on the flange of the vat are respectively fixed by a screw, so that the fixed connection between the flange of the vat and the outside of the bottom wall of the vat can be better achieved. For another example, the bottom wall of the vat is protruded with a number of fixing posts, the fixing posts are provided with screw holes, the flange of the vat is provided with a number of perforations corresponding to the fixing posts, and the screw holes on the fixing posts are connected to the flange of the vat. Several perforations on the disc are respectively fixed by a screw. In this way, the use of the fixing column can open longer screw holes, so that the screw connection between the fixing column and the screw is firmer, and the connection between the vat flange and the outer side of the bottom wall of the vat is firmer.

In order to better realize the fixed connection between the first power output shaft and the vat flange, in an embodiment, please refer to FIG. 4 , the first power output shaft 151 is fixed with a first bearing ring 1511 , please refer to FIG. 5 and FIG. 6. The first bearing ring 1511 is fixedly connected to the side of the vat flange 180 away from the vat 110 . Specifically, the first bearing ring 1511 is provided with a number of fixing holes, the large barrel flange 180 is provided with a number of through holes 182 corresponding to the fixing holes on the first bearing ring, and the several fixing holes of the first bearing ring are connected with the large barrel. Several through holes on the flange are respectively fixed by a screw. For example, several fixing holes of the first bearing ring 1511 are distributed in a circular array with the first power output shaft as the center. In this way, the first power can be better realized. The fixed connection between the output shaft and the flange of the vat. In one embodiment, please refer to FIG. 6 , the vat flange 180 is provided with a vat flange piercing hole 181 , please refer to FIG. 3 again, the bottom wall of the vat 110 is provided with a vat through hole 111 , and the vat flange pierces The hole 181 is arranged opposite to the vat through hole 111 , so that the second power output shaft 152 and the third power output shaft 153 can pass through the vat pulsator flange 180 and the bottom wall of the vat 110 . For another example, the middle of the vat flange 180 is provided with a vat flange piercing hole.

Please refer to FIG. 6 in conjunction with FIG. 5 , the middle of the vat flange 180 protrudes upward, or slightly protrudes upward, that is, protrudes upward in the height direction of the vat 110 , and the vat flange pierces the hole 181 and several through holes 182 are all arranged in the protruding area of the vat flange 180 , and several through holes 183 are arranged in the non-projecting area of the vat flange 180 . In this way, by protruding the middle of the vat flange upwards, the installation position of the vat flange 180 and the first power output shaft 151 can be closer to the vat mounting hole 111 , thereby making the second power output shaft 152 and the third The length of the power output shaft 153 extending into the interior of the large bucket 180 is longer, which facilitates the subsequent installation of the large bucket pulsator and the small bucket pulsator. For another example, the hole through which the flange of the vat is formed is a round hole structure.

Referring again to FIG. 1 , the vat pulsator 120 is located inside the vat 110 . Specifically, the vat pulsator 120 is disposed adjacent to the bottom wall of the vat. Please refer to Fig. 5 in conjunction with Fig. 3 and Fig. 4, the second power output shaft 152 passes through the vat piercing hole 111 and is connected to the vat pulsator 120, and the second power output shaft 152 is used to drive the vat pulsator 120 to rotate. The vat impeller is mainly used to disturb the water flow to wash the clothes in the vat. For example, the second power take-off shaft is fixedly connected with the vat pulsator.

In order to better realize the connection between the second power output shaft 152 and the large tub pulsator 120, in one embodiment, please refer to FIG. 7 and in conjunction with FIG. 5, the washing machine further includes a large tub pulsator flange 190, a large tub pulsator flange 190 is fixedly connected with the side of the vat pulsator 120 close to the bottom wall of the vat 110, and the second power output shaft 150 is connected to the vat pulsator flange 190, so as to drive the vat pulsator to rotate through the vat pulsator flange 190. In order to better realize the connection between the flange of the large bucket pulsator and the large bucket pulsator, in one embodiment, the large bucket pulsator flange 190 is provided with a plurality of through holes 192, and the large bucket pulsator 120 is adjacent to one of the bottom walls of the large bucket 110. There are several large barrel screw holes corresponding to the through holes 192 on the side, and each of the through holes 192 and the large barrel screw holes are respectively fixed in one-to-one correspondence with a screw. In this way, the connection between the vat pulsator and the vat pulsator can be better achieved. For example, the large bucket pulsator flange 190 has a star-shaped structure, and several end corner positions of the large bucket pulsator flange 190 are provided with through holes 192. In this way, the large bucket pulsator flange 190 with a star-shaped structure, It can make the connection between the big bucket pulsator and the big bucket pulsator more firm. In order to better realize the fixed connection between the second power output shaft 152 and the flange of the large bucket pulsator and facilitate the transmission of torque, in an embodiment, please refer to FIG. 7 , FIG. 4 and FIG. 5 , the flange of the large bucket pulsator 190 A fastening hole 191 is provided, and the second power output shaft 152 is supported in the fastening hole 191, and the second power output shaft is used to drive the large barrel pulsator to rotate through the large barrel pulsator flange. For another example, the fastening hole 191 has a non-circular hole structure, another example, the fastening hole 191 has a polygonal hole structure, another example, the fastening hole 191 has an octagonal hole structure, another example, the middle part of the flange of the large bucket pulsator Fastening holes are provided. In this way, the transmission of torque is facilitated. Please refer to FIG. 4 , a limit ring 1521 is fixed to the outside of the second power output shaft 152 , and the end of the second power output shaft 152 protrudes from the limit ring 1521 , and the part of the second power output shaft 152 extending out of the limit ring 1521 includes The fastening part 1522 and the screwing part 1523 are connected, the fastening part 1522 is arranged adjacent to the limit ring 1521, the large bucket pulsator flange 190 is fixed outside the fastening part 1522 through the fastening hole 191, and the large bucket pulsator flange 190 is fixed outside the fastening part 1522. The disk 190 is in contact with the limit ring 1521, the screw portion 1523 is screwed with a fixing screw ring (not shown in the figure), and the fixing screw ring is in contact with the flange 190 of the large bucket pulsator, and the second power output shaft 152 is used for passing through The large bucket pulsator flange 190 drives the large bucket pulsator 120 to rotate. In this way, the limiting ring 1521 and the fixing screw ring can better fix the flange 190 of the large bucket pulsator outside the second power output shaft 152 . For another example, the shape of the fastening portion 1522 matches the shape of the fastening hole 191 . Please refer to FIG. 7 and FIG. 5 , so the middle of the large bucket pulsator flange 190 is recessed downward, and the pulsator flange bearing hole 191 is located in the concave area of the large bucket pulsator flange 190, so that the large bucket is slightly recessed downward. The pulsator flange 190 can move the connection position of the large bucket pulsator flange and the second power output shaft to the bottom wall of the large bucket 110, which is convenient to save the space in the large bucket, and also facilitates the screw connection part. 1523 has a longer length to provide more threads, thereby making the connection between the screwed portion 1523 and the fixing screw more secure. For another example, the height of the fixing screw is the same as the length of the screwed part, so that the second power take-off shaft and the flange of the large bucket pulsator have better tightening performance after being installed.

In order to facilitate the third power output shaft 153 to pass through the large barrel pulsator 120, please refer to FIG. 3, the large barrel pulsator 120 is provided with a large barrel pulsator through hole 1212, so that the third power shaft 153 can pass through or be connected to the small barrel above it through other components. Barrel pulsator. Please refer to FIG. 8 again, the large barrel pulsator 120 is provided with a plurality of protruding ribs 122, and the several protruding ribs 122 of the large barrel pulsator 120 are distributed in a circular array with the rotation center of the large barrel pulsator 120. Plays a water flow disturbance action to facilitate the washing of the clothes in the vat. For another example, the large barrel pulsator is provided with convex ribs along its radial direction. For another example, the rib 122 of the large bucket pulsator 120 has a first water repelling surface 1221 and a second water repelling surface 1222 that are opposite to each other, the first water repelling surface has opposite ends along the radial direction of the large bucket pulsator, and the first water repelling surface is The two ends of the water-repellent surface gradually protrude from the middle to the direction away from the second water-removing surface. The second water-removing surface has opposite ends along the radial direction of the large bucket pulsator. The second water-removing surface gradually moves away from the middle from the two ends. The direction of the first water-removing surface is raised, so that the first water-removing surface and the second water-removing surface, which are slightly raised to the outside, can improve the water flow disturbance effect of the large bucket pulsator, so that the large bucket pulsator has better forward and reverse rotation. water flow disturbance effect. For another example, the first water-repellent surface and the second water-repellent surface of the protruding ribs of the large bucket pulsator 120 are arranged symmetrically on the left and right.

Please refer to FIG. 2 and FIG. 5 , the small bucket 130 is disposed on the large bucket pulsator 120 , and the small bucket 130 is located in the large bucket 110 . The large bucket pulsator 120 is used to drive the small bucket 130 to rotate under the driving of the second power output shaft 152 . For example, the small bucket 130 is detachably arranged on the large bucket pulsator 120. In this way, the disassembly of the keg is facilitated. For example, the detachable way of connecting the small bucket to the large bucket pulsator may include, but is not limited to, snapping, snapping, screwing, bundling, bundling, nesting, and the like. In order to facilitate the installation and disassembly of the small bucket and the large bucket pulsator, in one embodiment, please refer to FIG. 8 and FIG. 9 in conjunction with FIG. 5 , the large bucket pulsator 120 is protruded with a positioning post 121 , and the outer side of the bottom wall of the small bucket 130 is concave upward. A positioning slot 131 is provided, and the positioning post 121 is embedded or inserted in the positioning slot 131 . It should be noted that the positioning groove in this embodiment can also be understood as a concave structure, that is, a concave structure is provided on the outer side of the bottom wall of the small bucket. It should be noted that the positioning grooves or positioning posts in the present application, such as the words "positioning" above, are for the convenience of description, rather than for limiting their specific structures. Subsequent related terms are analogous, or should also be understood as such. In this embodiment, through the arrangement of the positioning post 121 and the positioning groove 131, it is convenient to install the small bucket 130 on the large bucket pulsator 120 through the cooperation of the positioning post and the positioning groove when the small bucket needs to be used. In order to better realize the installation of the positioning column and the positioning slot, and facilitate the transmission of the torque for the rotation of the small barrel driven by the impeller of the large barrel, for example, the shape of the positioning slot matches the shape of the positioning column. For another example, the shape of the positioning column or the cross-sectional shape is set to a triangle, a quadrilateral and other polygonal or non-circular shapes, so that it is convenient to drive the small barrel to rotate through the cooperation of the positioning column and the positioning groove by the large barrel pulsator. Of course, in other embodiments, the shape of the cross-section of the positioning column can also be set to be circular. It can be understood that the positioning column with a circular cross-section is easier to align relative to the positioning column with a non-circular cross-section, which can make the installation of the positioning column and the positioning groove more convenient, thereby facilitating the installation and operation of the small bucket. disassemble.

It should be noted that, in a conventional tub-in-barrel washing machine, that is, a washing machine with a small inner tub added to the inner tub of an existing ordinary pulsator washing machine, when the small tub is installed on the large tub pulsator by means of positioning posts and grooves , The structural firmness is poor. When using the small bucket for cleaning, if the washing machine vibrates too much, the small bucket may fall off. In order to ensure that the small bucket is installed on the large bucket pulsator with better structural firmness and the small bucket is not easy to fall off, in an embodiment, please refer to FIGS. 8 and 9 again in conjunction with FIG. The slot 1211, that is, the slot into which the subsequent position-limiting posts are inserted, the small barrel 130 is provided with a number of position-limiting posts 1311 on the inner sidewall of the positioning slot 131, and the position-limiting posts 1311 are at least partially embedded or inserted in the in slot 1211. In this way, since the positioning post is embedded in the positioning slot, and the cooperating between the limiting post and the slot, the small bucket is installed on the large bucket pulsator with good structural firmness, and the small bucket is not easy to fall off. For another example, please refer to FIG. 8 and FIG. 9 , the positioning column 121 is arranged in the middle of the bucket pulsator 120 . Of course, in other embodiments, a plurality of positioning posts or positioning grooves may also be provided and are respectively provided at multiple positions on the pulsator of the vat. In this embodiment, as shown in FIG. 8 , the number of the positioning column and the positioning groove is one. By arranging the positioning post 121 in the middle of the large bucket pulsator 120, the installation convenience of the small bucket can be improved. For another example, as shown in Fig. 8 and Fig. 9, the positioning column 121 has a circular cross-section along the height direction of the keg, or the outer side wall thereof has a circular cross-section. The positioning groove 131 has a circular cross-section along the height direction of the keg. In this way, by designing the positioning post to have a circular cross section, and combining the matching of the limiting post and the slot, the small barrel has good structural firmness after being installed on the large barrel pulsator, so that the small barrel is not easy to fall off. For example, the limiting post and the slot cooperate with each other and limit the position so that the pulsator of the large bucket drives the small bucket to rotate when it rotates. In this way, it is convenient for the large barrel pulsator to drive the small barrel to rotate through the cooperation of the limiting post and the slot. For another example, the shape of the slot matches the shape of its corresponding limiting plug. For another example, the limiting pins 1311 are embedded in the slots 1211 in a one-to-one correspondence. In this way, through the cooperation of the limiting post 1311 and the slot 1211, the structural firmness of the small bucket after being installed on the large bucket pulsator can be further improved, so that the small bucket is not easy to fall off during use. In one embodiment, the limiting pin 1311 has a rectangular parallelepiped structure, and the slot 1211 has a rectangular cross-section. In another example, the limiting pin 1311 has a bar-shaped protrusion structure, and the slot 1211 has a side matching the limiting pin 1311 . At the interface, the limiting pins 1311 and the sockets 1211 form clearance fit. In this way, after the limiting insert 1311 is inserted into the slot, it has a better limiting effect, so that the structure is firmer after the small barrel is installed on the large barrel pulsator. For example, the height of the positioning post is 40 mm to 110 mm, and the depth of the positioning groove in the direction of the height of the keg is 60 mm to 110 mm. In this way, the combination strength of the positioning column and the positioning groove can be better, and the falling off of the small barrel can be reduced or avoided. Of course, the depth of the positioning groove or the height of the positioning column is not limited to this. In another example, the height of the positioning column is 45 mm to 60 mm, and the depth of the positioning groove along the height direction of the keg is 75 mm to 90 mm. In this way, the binding force can be ensured while the height of the positioning post and the positioning groove is reduced as much as possible. Of course, in a specific embodiment, the height of the positioning column and the height of the positioning groove can be flexibly set according to the size of the bucket and the rotational speed. For example, the depth of the slot 1211 in the radial direction of the vat pulsator is 1.5 mm to 20 mm. In another example, the depth of the slot in the radial direction of the vat pulsator is 1.8 mm to 3 mm. As another example, the depth of the slot in the height direction of the keg is 15 mm to 80 mm. As another example, the depth of the slot in the height direction of the keg is 15 mm to 80 mm. As another example, the depth of the slot in the height direction of the keg is 20 mm to 25 mm. For another example, the length of the limit post along the height direction of the keg is 40 mm to 100 mm. For another example, the length of the limit post along the height direction of the keg is 50 mm to 70 mm. In this way, the bonding strength of the slot and the post can be better ensured, which facilitates the transmission of the torque of the large bucket pulsator. A specific example is that the depth of the positioning groove is 77 mm, the length of the limit post is 77 mm, the height of the positioning post is 73 mm, and the length of the slot is 73 mm. In this way, the installation firmness is better. Of course, the slot and the post can also be other structures that can be nested, so that the slot and the post can have a certain limiting effect after the locating post is embedded in the locating slot. For another example, the arrangement positions of the plurality of slots 1211 are distributed at intervals along the rotation axis of the bucket pulsator 120. For another example, please refer to FIG. 8 and FIG. 9 , the arrangement positions of the plurality of slots 1211 are distributed at intervals along the rotation axis of the large bucket pulsator 120 . In this way, the installation strength of the small bucket 130 and the large bucket pulsator can be made stronger, so that the large bucket is not easy to fall off during the dehydration process. For example, the depth of the positioning groove 131 is greater than the thickness of the bottom wall of the small barrel 130, and the depth of the positioning groove refers to the length of the positioning groove along the height direction of the small barrel 130.

When there are raised ribs 122 on the large bucket pulsator, in order to make full use of the limiting effect of the raised rib 122 to further improve the structural firmness of the small bucket after being installed on the large bucket pulsator, in an embodiment, please refer to FIGS. 8 to 8 . 10. A number of limiting grooves 133 are provided on the outer side of the bottom wall of the small bucket 130 , and the ribs 122 of the large bucket pulsator 120 are embedded in the limiting grooves 133 . For another example, several protruding ribs of the large bucket pulsator are in one-to-one correspondence with the limiting grooves 133 on the bottom wall of the small bucket, and the limiting grooves match the shape of the corresponding convex ribs. In this way, the small bucket 130 can be positioned through it When the groove 131 is embedded outside the positioning post 121 and installed on the large bucket pulsator, the limiting groove 133 on the small bucket is also embedded outside the convex rib, which further improves the structural firmness of the small bucket after it is installed on the large bucket pulsator, so that the The small barrel is not easy to fall off during use. For another example, the plurality of protruding ribs 122 of the vat pulsator 120 are distributed in a circular array with the rotation axis of the vat pulsator 120. For another example, the number of convex ribs of the large barrel pulsator is 5 to 12. Preferably, the number of the ribs 122 of the vat pulsator 120 is five. In this way, on the one hand, it has a better cleaning effect on the clothes in the large bucket, and on the other hand, it can further improve the structural firmness of the small bucket after being installed on the large bucket pulsator, so that the small bucket is not easy to fall off during use. For another example, referring to FIG. 8 and FIG. 10 , the large bucket pulsator 120 has a circular flat structure as a whole. In this way, the large bucket pulsator with a flat structure is more suitable for installing the small bucket, so that the small bucket can be more firmly installed on the large bucket pulsator. For another example, please refer to FIG. 8 , the large bucket pulsator 120 further defines a plurality of drainage holes 123 in the middle of the two adjacent ribs 122 . For another example, please refer to FIG. 9 , a plurality of annular reinforcing ribs 124 and radial reinforcing ribs 125 are also protruded on the side of the large bucket pulsator away from the small bucket, and each radial reinforcing rib intersects with several annular reinforcing ribs, so that the large bucket can be improved. The overall structural strength of the impeller 120 . In one embodiment, please refer to FIG. 8 and FIG. 12 , the periphery of the vat pulsator is upwardly convex or slightly convex, so that the slightly upwardly protruding periphery can reduce foreign objects falling under the vat pulsator to a certain extent, that is, Drop into the bottom wall of the vat pulsator 120 and vat 110 . In order to further improve the structural firmness of the small bucket after it is installed on the large bucket pulsator, and avoid the problem of the small bucket falling off during the dehydration and rotation of the small bucket driven by the large bucket pulsator, in an embodiment, please refer to FIG. 11 , which is a brief schematic diagram. The positioning post 1311 is provided with a convex portion 13111, and the positioning post is provided with a concave groove 12111 on the side wall of the slot 1211. The groove 12111 corresponds to the position of the convex part 13111, and the convex part 13111 can be at least partially accommodated in the concave groove 12111. According to the actual use process, the position of the concave groove and the position of the convex part can be set in the When the keg is in use, the side to which the centrifugal tangential force faces during the dehydration rotation, or the side to which the circumferential force points during the dehydration rotation. In other words, the position of the concave slot is set on the side of the limit plug on the side where the centrifugal tangential force is facing during the dehydration and rotation of the small bucket, and the position of the convex part is set on the slot in the centrifugal tangential direction during the dehydration and rotation of the small bucket. on the side wall on the side facing the force. In this way, by arranging the concave groove and the convex part, in the process of dehydration rotation, under the action of the centrifugal tangential force of the dehydration, the convex part can be at least partially accommodated in the concave groove, so that the concave groove has a positive effect on the convex part. A certain limiting effect, so that the slot has a certain limiting effect on the plunger, so that the positioning column of the large bucket pulsator has a better limiting effect on the positioning groove of the small bucket, which can further improve the installation of the small bucket to the large bucket. The firmness of the structure behind the pulsator prevents the small bucket from falling off during the dehydration and rotation of the small bucket driven by the large bucket pulsator. In a specific embodiment, the side wall of the small bucket has a certain inclination angle, usually 1.5 degrees to 30 degrees, under the action of the centrifugal force of the dehydration rotation, the water in the small bucket is easily thrown out through the inclined side wall, However, when the centrifugal force of the dehydration rotation is too large, there is a risk that the keg will become unstable and even be thrown out. In this embodiment, by setting the concave groove 12111 and the convex portion 13111, the structural firmness of the small bucket after being installed on the large bucket pulsator can be improved. stability. For another example, the convex portion 13111 has a rectangular parallelepiped structure, and the concave groove 12111 also has a rectangular cross section. In other words, the concave groove 12111 matches the shape of the convex part 13111 . Of course, the protruding portion and the protruding portion can also be in other shapes, as long as the slot can have a certain limiting effect on the limiting plug. In order to reduce the noise generated when the large bucket pulsator drives the large bucket to rotate, in one embodiment, there is a rubber strip between the slot and the limit post. In this way, by adding the rubber strip, it is possible to reduce the noise generated when the large bucket pulsator drives the large bucket to rotate. noise. Of course, when installing the rubber strip, the rubber strip should be properly avoided at the position of the concave groove or the convex part. It should be noted that when a positioning column is provided in the middle of the large barrel pulsator, the large barrel pulsator through hole opened on the large barrel pulsator penetrates through the top of the positioning column. In this way, it is convenient for the third power output shaft or its transmission components to pass through. When the large barrel pulsator through hole runs through the positioning column and is away from the side of the large barrel pulsator, and the outer side wall of the positioning column has a circular cross-section, the positioning column at this time can also be regarded as a hollow cylinder. In order to facilitate the third power output shaft 153 to pass through the bottom wall of the small barrel 130, in one embodiment, please refer to FIG. 3 and FIG. 12 , the bottom wall of the small barrel 130 is provided with a small barrel mounting hole 1312. In this way, the small barrel mounting hole 1312 is convenient for the third power shaft 153 or its transmission components to pass through and extend into the interior of the keg 130 to connect the keg pulsator 140 inside the keg. For another example, the bottom wall of the small barrel 130 is provided with a small barrel mounting hole 1312 on the bottom wall of the positioning groove 131, and the small barrel mounting hole 1312 and the large barrel impeller passing hole 1212 at least partially overlap, so that the third power shaft 153 or Its transmission parts pass through the large barrel pulsator piercing hole 1212 and the small barrel mounting hole 1312 in sequence.

It can be understood that the bottom wall of the small bucket 130 is usually relatively thin, and when a concave structure or a positioning groove 131 is provided on it, the technical design is very limited, which affects the firmness of the small bucket 130 being installed on the large bucket pulsator 120. In order to improve the firmness of the small bucket 130 installed on the large bucket pulsator 120 , in an embodiment, please refer to FIG. 12 in conjunction with FIG. 5 and FIG. That is, the positioning groove 131 is formed with a mounting post on the inner bottom wall of the small bucket. It can also be understood that there is a mounting post protruding on the inner side of the bottom wall 130a of the small bucket 130, and the mounting post 132 is on the outer side of the bottom wall 130a of the small bucket. A positioning groove 131 is formed. A small barrel mounting hole 1312 is defined on the side of the mounting post 132 away from the inner bottom wall of the small barrel 130 . In this way, the protruding mounting posts 132 are convenient for opening the positioning grooves 131 with a longer depth, thereby improving the firmness of the small bucket 130 being installed on the large bucket pulsator 120 . In this embodiment, it can also be understood that the mounting post 132 is disposed on the bottom wall of the small bucket 120 , that is, the mounting post is regarded as a bottom wall part separated from the small bucket. Of course, it should be noted that mounting posts are protruded from the bottom wall of the small bucket, or in other words, the mounting posts are provided on the bottom wall of the small bucket. Although the text descriptions are different, all of them should be regarded as the scope of this application. It should be noted that the inner side of the bottom wall of the small barrel is the side of the bottom wall of the small barrel inside the small barrel, the outside of the bottom wall of the small barrel is the bottom wall of the small barrel and the side outside the small barrel, and the other And so on.

Please refer to FIG. 5 again in conjunction with FIG. 1 and FIG. 3 , the small bucket pulsator 140 is located in the small bucket 130 , and the third power output shaft 153 passes through the large bucket piercing hole 111 , the large bucket pulsator piercing hole 1212 and the small bucket installation in sequence. The hole 1312 is connected to the small barrel pulsator 140 , and the third power output shaft 153 is used to drive the small barrel pulsator 140 to rotate. The small tub pulsator 140 is used to provide the action of disturbing the water flow, so as to facilitate the washing of the clothes in the small tub. It should be noted that the traditional tub-in-barrel washing machine (that is, a washing machine in which a small inner tub is added to the inner tub of an existing ordinary pulsator washing machine) still has the following defects: the cleaning of the clothes in the small tub mainly relies on the protrusions on the inner wall of the small tub. Therefore, the relative movement between the clothes and the water flow is relatively weak, and the cleaning effect on the clothes in the small bucket is also poor. In addition, in the traditional tub-in-tub washing machine, the power of the large tub pulsator is mainly provided by the washing shaft of the DD motor. The power output shaft of the DD motor is divided into a washing shaft and a dehydrating shaft. The dehydrating shaft drives the drum to rotate, and the washing shaft drives the pulsator to rotate. When using a small tub for washing, the washing shaft is subjected to large torque and bending stress, which indirectly leads to serious wear of the bearing fixing the washing shaft. Due to the limited strength of the washing shaft, the maximum torque it can withstand is limited, and the external manifestation is that the weight of the clothes and water is restricted when the small tub is washed, so the rated washing capacity of the small tub cannot be too large. In this embodiment, by using the three power clutch 150, which has three power shafts, compared with the DD motor, it has an extra third power output shaft 153, and the third power output shaft drives the small barrel pulsator to rotate, so , during the washing process of using the small tub, the washing power of the small tub is provided by the second power output shaft and the third power output shaft at the same time, which can solve the above-mentioned traditional problems. In the washing machine, since the washing power of the small tub is provided by the second power output shaft and the third power output shaft at the same time, the torque and bending stress of the second power output shaft driving the pulsator of the large tub are correspondingly reduced, so that the rated value of the small tub can be reduced. The washing capacity has been increased, and the small tub is capable of washing larger volumes of laundry. In addition, a small bucket pulsator is arranged in the small bucket. Compared with the traditional bucket-in-a-bucket washing machine, the small bucket only relies on the ribs protruding from the inner side wall of the washing inner bucket to realize the way of cleaning with water flow disturbance. The above washing inner bucket is in the small bucket. A small bucket pulsator is arranged inside, which can achieve a stronger water flow disturbance effect, thereby improving the cleaning effect of clothes.

It can be understood that when the clothes in the small tub 130 are washed and drained, the water in the small tub is mainly thrown out from the inclined bottom wall of the small tub by rotating the small tub at a high speed. To further introduce the keg, please refer to FIG. 12 , the keg 130 includes a bottom wall 130a and a side wall 130b, the bottom wall of the keg is connected to the side wall of the keg, and the bottom wall 130a of the keg 130 and the side wall of the keg 130 130b together form the hollow cavity of the keg. Inside the keg as before, ie inside the hollow cavity of the keg. Mounting posts 132 are also located within the hollow cavity of the keg 130. For example, the side wall of the keg has an inclined angle, and the inner diameter of the keg gradually increases from the bottom wall of the keg along the opening direction of the keg. For example, the angle of inclination is 1.5 degrees to 30 degrees. In this way, the inclined side wall of the small bucket can better throw the water along the side wall of the small bucket during the dehydration process of the clothes in the small bucket. For example, the bottom wall 130a of the small bucket 130 is provided with a concave structure on the outside of the small bucket 130, that is, the positioning groove 131 as before. For example, the bottom wall 130a of the small bucket 130 has a circular structure as a whole, or in other words, the bottom wall 130a of the small bucket has a circular cross section along the height direction of the small bucket. The recessed structure 131 is located in the middle of the bottom wall 130a, and the position of the recessed structure 131 corresponds to the position of the mounting post 132. It can also be understood that the recessed structure forms the mounting post on the inner side of the bottom wall of the keg. For example, the mounting post has a circular cross-section along the height of the keg, for example, the diameter of the mounting post is 1/5 to 2/5 of the smallest diameter of the keg. In this way, the cleaning effect of the small bucket is better. It can be understood that, after the installation post is installed on the bottom wall of the small bucket, the installation post protrudes from the bottom wall of the small bucket, which will affect the installation of the small bucket pulsator to a certain extent, especially when the small bucket pulsator 140 is relatively flat, it will Waste a lot of space in the keg. In an embodiment, please refer to FIG. 12 in conjunction with FIG. 13 , a first step portion 130c and a second step portion 130d are provided between the side wall 130b and the bottom wall 130a of the small tub 130 , and the first step portion 130c includes a connected The top wall 130c1 and the side wall 130c2, the second step part 130d includes the connected top wall 130d1 and the side wall 130d2, the top wall 130c1 of the first step part is connected to the inner side of the side wall 130b of the small tub 130, and the top The wall 130d1 is connected to the side wall 130c2 of the first stepped portion, and the peripheral edge of the bottom wall 130a of the small tub 130 is connected to the bottom wall 130d2 of the second stepped portion. In this way, in addition to accommodating the limiting slot 133 on the bottom wall, the second step portion is more important to ensure the height of the mounting post, so that the mounting post has a sufficient height, so that the bottom wall can open a sufficient height of the positioning slot and The limit post can further improve the structural strength of the small bucket installed on the large bucket pulsator, so that the large bucket pulsator can maintain stability when driving the small bucket to rotate by setting the limit post and the slot. In addition, by providing the first step part and the second step part, the influence on the installation of the small bucket pulsator can be reduced, the volume of the gap space between the small bucket pulsator and the bottom wall of the small bucket can be reduced, and the cleaning of the small bucket can be reduced. waste of time water. For another example, the top wall 130d1 of the second stepped portion is connected to the middle portion of the side wall 130c2 of the first stepped portion, so that the structural connection strength thereof can be increased. For another example, the top of the side wall 130c2 of the first stepped portion protrudes from the top wall 130c1 of the first stepped portion. A first annular blocking groove 130e is formed together. For another example, the top of the side wall 130d2 of the second stepped portion slightly protrudes from the top wall 130d1 of the second stepped portion, and the top of the side wall 130d2 of the second stepped portion is in contact with the top wall 130d1 of the second stepped portion and the first stepped portion. The side walls 130c2 together form a second annular retaining groove 130f. For another example, an annular reinforcing rib 1431 protrudes downward from the lower peripheral edge of the small bucket pulsator 140, and the annular reinforcing rib 1431 on the lower peripheral edge of the small bucket pulsator 140 is at least Part of it is accommodated in the second annular retaining groove 130f, so that by providing the first annular retaining groove and the second annular retaining groove, the annular reinforcing rib of the lower peripheral edge of the keg pulsator is at least partially accommodated in the first annular retaining groove and the second annular retaining groove. The two annular blocking grooves can have a certain blocking effect on foreign objects during the cleaning process of the small bucket, and reduce foreign objects from entering the space between the small bucket pulsator and the bottom wall of the small bucket. For example, the height of the first stepped portion is 9 mm to 13 mm, and the height of the second stepped portion is 14 mm to 21 mm. It should be noted that the heights of the first step portion and the second step portion are the heights of the side plates. In order to facilitate disassembly and movement of the small bucket, in one embodiment, a handle is provided on the small bucket. In this way, the keg can be easily removed and moved from the large drum impeller via the handle. For another example, the handle is arranged on the top end of the side wall of the small bucket.

In order to further improve the cleaning effect of the clothes in the small bucket, for example, please refer to FIG. 12 , the side wall 130b of the small bucket 130 is protruded with a number of cleaning ribs 130b1 on the inner side. For another example, a plurality of cleaning ribs 130b1 are distributed on the side of the small bucket at intervals. On the wall, for another example, the cleaning ribs of a plurality of small buckets are distributed at circumferential intervals around the rotation center of the small buckets. In this way, the cleaning ribs arranged at intervals can further improve the water flow disturbance ability in the small buckets, thereby improving the ability to disturb the clothes in the small buckets. cleaning effect. In another example, the cleaning rib of the small bucket is a raised elongated structure, and another example, the lengthwise extending direction of the cleaning rib is consistent with the height direction of the small bucket. In this way, a better water flow disturbance effect can be achieved during the rotation of the small tub, thereby improving the cleaning effect of the clothes in the small tub. For another example, the central angle of the interval between two adjacent cleaning ribs 130b1 of the small bucket 130 is 15 degrees to 20 degrees. Preferably, the central angle of the interval between two adjacent cleaning ribs of the small bucket is 20 degrees. The interval central angle is the central angle centered on the rotation center of the keg. In this way, the cleaning effect is better. For another example, the length of the cleaning ribs of the small bucket along the circumferential direction of the small bucket is 8 mm to 12 mm. For another example, the corners of the cleaning ribs of the small bucket have a rounded structure. For another example, the corners of the cleaning ribs of the small bucket are all rounded. In this way, the disturbance effect on the water flow is better, and the cleaning effect on the clothes in the small tub can be improved.

It can be understood that the washing of laundry usually involves processes such as soaking, washing and dehydration. The side wall of the sloping keg flows into the outer tub along the sloping side wall during the dewatering process of the keg. At the same time, however, during the normal cleaning of the kegs, the water flow in the rotating kegs will also partially flow out along the side walls of the kegs. In order to better block the water in the rotating small bucket during the cleaning process of the small bucket, for example, please refer to FIG. 14 , which is a part of the opening position of the small bucket with a water blocking ring in one embodiment. The cross-sectional view shows that the top of the side wall 130b of the small tub 130 is protruded with an annular limit rib 130b2. The washing machine further includes a water blocking ring 135. The water blocking ring 135 includes a connected water blocking portion 1351 and a drainage portion 1352. The water blocking portion is far away from the drainage. The end of the water-retaining part abuts the annular limit rib, so that the annular limit rib plays a certain supporting role for the water blocking part. The diameter of the water retaining portion gradually increases from the end close to the annular limit rib to the end far from the annular limit rib, and the drainage portion 1351 is located above the water retaining portion 1352, and the diameter of the drainage portion increases from the end close to the water retaining portion. The diameter of the end portion away from the water blocking portion gradually increases, the end portion of the drainage portion away from the water blocking portion protrudes to the outside of the side wall of the small bucket, and the end portion of the drainage portion far away from the water blocking portion and the side wall of the small bucket There is a gap between the top ends, and the end of the water blocking part 1351 adjacent to the annular limit rib is provided with a number of drainage holes 13511, and the drainage holes of the water blocking part are distributed at circumferential intervals with the rotation center of the small bucket. It has a good water blocking effect on the cleaning water flow in the non-dehydration state of the small bucket, and when the small bucket is dehydrated at a high speed and rotates at a high speed, most of the water in the small bucket can be discharged to the outside of the small bucket through the water blocking part and the drainage part. into a vat and then drain through the vat. By arranging the drainage holes, a small portion of the water at the end of the water blocking portion away from the drainage portion can be better drained. In another example, the distance between two adjacent drainage holes of the water blocking portion is equal, and in another example, the opening direction of the drainage holes is the height direction of the small bucket. In another example, the drain hole has a circular cross-section, and in another example, the drain hole becomes larger in diameter from an end close to the bottom wall of the keg to an end away from the bottom wall of the keg. As another example, the diameter of the drainage hole is 4 mm to 6 mm. For another example, the central angle of the rotation center of the small bucket between two adjacent drainage holes of the water blocking portion is 15 degrees to 20 degrees. Preferably, the central angle of the rotation center of the small bucket is 18 degrees for the two adjacent drainage holes of the water blocking portion. In this way, the drainage efficiency can be effectively improved, and the drainage effect is good, and a small part of the water at the end of the water blocking portion away from the drainage portion can be drained more thoroughly. As another example, the drain hole has an annular cross-section. In order to have a better water blocking effect, the passage of water from the gap between the water blocking part and the side wall of the small bucket is reduced. A sealing ring 136 is also provided between the end of the part away from the drainage part and the limiting rib, the sealing ring is partially accommodated in the annular groove 13512, and the sealing ring is in contact with the side wall of the small bucket. In another example, the sealing ring is a rubber ring, so that the gap between the end of the water blocking portion and the side wall of the small bucket can be well sealed. For example, the washing machine further includes a pressure ring 137, the top of the pressure ring 137 is bent to form a retaining slot 1371, the pressing ring is fastened to the top of the side wall of the small tub through the retaining slot 1371, and the second end of the pressing ring is connected to the water blocking part. The end of the water blocking part away from the drainage part abuts, and the end of the water blocking part away from the drainage part is located between the pressure ring and the limiting rib. In this way, by arranging the pressure ring, the water blocking portion can be better pressed and fixed on the annular limiting rib, thereby making the installation of the entire water blocking ring relatively firm.

It can be understood that the small bucket is detachably installed on the large bucket pulsator, so it brings a lot of challenges to the installation of the third power output shaft 153 and the small bucket pulsator 140. On the one hand, it is necessary to ensure that the third power output shaft can transmit torque to the small barrel pulsator, and on the other hand, it is necessary to facilitate the disassembly and installation of the third power shaft and the small barrel pulsator. For example, the third power output shaft can be detachably connected to the small barrel pulsator, specifically, including but not limited to screw connection, snap connection and the like. In order to make the small barrel pulsator and the third power shaft detachable and connected more conveniently, it is convenient for the transmission of torque. In one embodiment, the washing machine further includes a power output shaft connecting assembly, and the third power output shaft is connected to the small tub pulsator through the power output shaft connecting assembly. Please refer to Fig. 15 to Fig. 19, the power take-off shaft connecting assembly includes an upper cartridge 160 and a lower cartridge 170, and the upper cartridge and the lower cartridge are clamped. Please refer to FIG. 16 , the upper cartridge 160 is provided with an upper latch 161 , the lower cartridge 170 is provided with a lower latch 171 , the upper latch 161 and the lower latch 171 are clamped, and the upper latch 160 and the lower latch 170 pass through the upper latch 170 . The clamping teeth 161 and the lower clamping teeth 171 are clamped to realize the clamping connection. The upper cartridge 160 can be used to install and connect the components to be driven, and the lower cartridge 170 can be used to install and connect the power output shaft or the transmission shaft of the drive assembly. In particular, it is suitable for the detachable installation of the small barrel impeller and the third power take-off shaft in the removable small barrel. Specifically, in this embodiment, the upper cartridge 160 can be used to connect the small barrel pulsator 140, and the lower cartridge 170 can be used to connect the third power output shaft 153. The upper cartridge and the lower cartridge are clamped to facilitate the transmission of the torque of the power output shaft, so that the third power output shaft drives the small barrel pulsator to rotate through the lower cartridge and the upper cartridge. When the third power shaft needs to be disconnected from the small barrel pulsator, the connection between the upper cartridge and the lower cartridge can be directly disconnected. When the keg is installed on the keg pulsator, the upper jaw of the upper cartridge and the lower jaw of the lower cartridge are engaged. When the keg is removed from the keg pulsator, the upper and lower jaws can be disconnected.

Please refer to FIGS. 15 to 19 , the outer sidewall of the upper cartridge 160 is provided with upper latches 161 ; the lower cartridge 170 is provided with a latching groove 172 , and the inner sidewall 172 of the latching groove of the lower cartridge 170 is provided with lower latches 171 ; The upper clamping cylinder 160 is at least partially accommodated in the clamping groove 172 , and the upper clamping teeth 161 and the lower clamping teeth 172 are clamped. In this way, the upper cartridge and the lower cartridge can be detachably connected. During installation, the transmission of the torque of the power output shaft is facilitated by the clamping of the upper jaw and the lower jaw. Specifically, in this embodiment, it is convenient for the third power The power transmission of the output shaft to the keg pulsator. When disassembling, the upper cartridge can be directly pulled out from the clamping groove of the lower cartridge, so that the operation of the installation process and the disassembly process is very convenient, and the operation convenience is good. In one embodiment, the upper jaw 161 includes a plurality of upper protrusions 1611 distributed at intervals on the outer side wall of the upper cartridge 160 , and the lower jaw 171 includes a plurality of lower jaws distributed at intervals on the inner side wall of the locking groove 172 of the lower cartridge 170 . Protrusions 1711, a lower groove 1711a is formed between two adjacent lower protrusions 1711, each upper protrusion 1611 is inserted into the lower groove 1711a in a one-to-one correspondence, and each upper protrusion 1611 is at least partially inserted into the corresponding lower groove 1711a. in the groove 1711. In this way, the installation structure has better firmness and higher torque transmission efficiency. For another example, each upper protrusion is embedded in the lower groove in a one-to-one correspondence, and each upper protrusion is at least partially embedded in the corresponding lower groove. In this way, the clamping connection between the upper clamping teeth and the lower clamping teeth can be made firmer, and the torque transmission efficiency can be further improved. For another example, both the upper protrusion 1611 and the lower protrusion 1711 have a bar-shaped structure, the end of the upper protrusion 1611 adjacent to the lower groove has a pointed structure, and the end of the lower protrusion 111 adjacent to the upper cartridge also has a pointed structure . In this way, the corner structure of the end makes it easier for the upper protrusion to be inserted into the lower groove. It should be noted that, in this embodiment, it can also be understood that an upper groove is formed between two adjacent upper protrusions, and each lower protrusion is inserted into an upper groove correspondingly. It should be understood that although there are differences in the above descriptions, they should be included in the protection scope of the present application. In addition, the positions of the upper cartridge and the lower cartridge can also be exchanged, that is, the upper cartridge is used to connect the power shaft, and the lower cartridge is used to connect the components to be driven, such as the small barrel pulsator, which should also be contained in the The scope of protection applied for.

In one embodiment, please refer to FIG. 15 to FIG. 19, the upper cartridge 160 includes a top plate 160a and a cylindrical body 160b, the cylindrical body 160b is a hollow cylinder, and the outer side wall of the cylindrical body 160b is provided with an upper clamping tooth 161, the upper clamping tooth 161 includes a plurality of upper protrusions 1611 distributed at intervals on the outer side wall of the cylindrical body 160b; the top plate 160a is connected to the top of the cylindrical body 160b. The top plate is used to cut out the holes for attaching the keg impeller. In one embodiment, the top plate 160a is connected to the end of the upper protrusion 1611 away from the lower groove 1711a, so that the top plate can make the structure of the upper protrusion 1611 on the cylinder more firm. For another example, the upper cartridge 160 further includes an installation rod 160c, the installation rod 160c is cylindrical, the top plate 160a is connected to the top of the installation rod 160c, the diameter of the installation rod 160c is smaller than the inner diameter of the cylinder body 160b, and the installation rod 160c is located in the cylinder body 160b , the length of the cylinder body 160b is less than the length of the installation rod 160c; thus, by setting the installation rod, it is convenient to open a hole with a longer length in it, so as to make the installation connection between the upper cartridge and the third power shaft more firm. In one embodiment, the end of each lower protrusion away from the upper cartridge is connected to the bottom wall of the clamping slot. In this way, the structural strength of the overall lower jaw can be increased.

In a specific embodiment, the upper cartridge 160 is connected to the small barrel pulsator 140 through the splines 221. In order to better connect the splines and the upper cartridge, for example, please refer to FIG. 18, the top plate 160a is provided with an upper seat Hole 160a1, the upper mounting hole 160c1 and the upper accommodating hole 160c2 that communicate with each other are opened in the mounting rod 160c, and the upper accommodating hole, the upper accommodating hole and the upper accommodating hole are connected in sequence; the diameter of the hole. The upper placement hole 160a1 is used to accommodate the spline 221, and the upper placement hole 160a1 matches the shape of the spline. For example, the end of the spline adjacent to the upper cartridge has a triangular, quadrangular or polygonal cross-section, and the upper mounting hole matches the shape of the spline, which can facilitate the transmission of torque. Please refer to FIG. 5 , the upper mounting hole 160c1 is used for penetrating the rod portion of the screw 310a, and the upper accommodating hole 160c2 is used for accommodating the head of the screw 310a. In this way, the upper cartridge can be fixed with the spline through the screw. Of course, the ends of the splines need to be provided with screw holes corresponding to the screws. It should be noted that the screw 310a in this embodiment is named as the first upper screw 310a in order to distinguish the subsequent screws. For example, the two ends of the spline 221 are respectively provided with two screw holes, which are respectively the upper screw hole 2211 of the spline and the lower screw hole 2212 of the spline. For example, the small barrel pulsator 140 is provided with a fixing hole 141, and the small barrel pulsator 140 and the spline 221 are fixed by the second upper screw 310. The rod portion of the second upper screw 310 is screwed into the fixing hole 141 and the spline upper screw hole 2211 in sequence. In this way, the spline and the keg pulsator can be connected. For example, the rod portion of the first upper screw 310a passes through the upper mounting hole 160c1 and is screwed into the splined lower screw hole 2212 . In this way, the spline can be connected to the upper cartridge. The spline in this embodiment can also be understood as a spline shaft, or a connecting rod.

Please refer to FIG. 16 and FIG. 18 , the bottom wall of the lower cartridge 170 is provided with a placement slot 1721 , and the end of the mounting rod adjacent to the lower cartridge is accommodated in the placement slot, and the placement slot is used for placing or placing Or to accommodate the ends of the mounting rods. For another example, the bottom wall of the clamping groove 172 of the lower cartridge has a plurality of arc-shaped blocking pieces 172a protruding toward the direction close to the upper cartridge. The central axis of the cylindrical body 160b of the cartridge above the shaped baffles 172a is distributed at a circumferential interval, and a plurality of arc-shaped baffles 172a and the bottom wall of the clamping groove 172 together form a placement position for placing or placing or accommodating the mounting rod. Ends. The bottom wall of the locking groove 172 is also provided with a mounting groove 1721 at the position of the mounting position, so that a mounting rod with a longer length can be accommodated. In one embodiment, please refer to FIG. 16 , the outer side wall of the lower cartridge 170 is protruded with a plurality of reinforcing ribs 170a, and the several reinforcing ribs 170 of the lower cartridge are distributed at circumferential intervals with the center axis of the cylinder body of the upper cartridge as the center. In this way, several reinforcing ribs can better reinforce the structure of the lower cartridge. In one embodiment, referring to FIG. 16 , FIG. 18 and FIG. 19 , the end of the lower cartridge 170 adjacent to the upper cartridge 160 extends along the outer direction of the lower cartridge 170 with an extension portion 170b . For another example, the extension portion 170b moves away from The direction of the side wall of the lower cartridge 170 is gradually inclined downward. In another example, the end portion of the extension portion 170b away from the side wall of the lower cartridge 170 is downwardly protruded with a blocking portion 170b1. 8 and FIG. 5, the positioning column 121 of the vat pulsator 120 is provided with an annular groove 1213 on the side away from the vat pulsator 120, and the annular groove 1213 is opened around the vat pulsator mounting hole 1212. The blocking portion 170b1 partially extends into the annular groove 1213, so that the arrangement of the annular groove and the blocking portion 170b1 can also prevent foreign objects from falling into the installation hole of the vat pulsator to a certain extent.

In order to better install the lower cartridge 170 and the third power transmission shaft 153 together, in an embodiment, please refer to FIG. 18 , the bottom wall of the lower cartridge 170 is provided with sequentially connected lower placement holes 1722 on the bottom wall of the placement groove 1721 . , a lower mounting hole 1723 and a lower accommodating hole 1724, and the lower accommodating hole 1722 is closest to the upper cartridge 160, and the diameter of the lower accommodating hole 1723 is smaller than that of the lower accommodating hole 1722 and the lower accommodating hole 1724, respectively. Please refer to FIG. 5 , the lower cartridge 170 is connected to the third power output shaft 153 through the lower screw 320 . The lower accommodating hole 1722 is used for accommodating the head of the lower screw 320, the lower accommodating hole 1723 is used for passing through the rod portion of the lower screw 320, and the lower accommodating hole 1724 is used for accommodating and installing the end of the third power output shaft 153. The third power output shaft 153 is provided with a screw hole 153a, and the rod of the lower screw 320 passes through the lower mounting hole 1723 and is screwed to the screw hole 153a of the third power output shaft 153, so as to connect the lower cartridge with the third power output shaft fixed.

In order to make the connection between the third power output shaft and the lower cartridge more firm, and to improve the torque transmission efficiency, in an embodiment, please refer to FIG. 17 to FIG. 19 , the lower cartridge 170 is located on the side wall of the lower accommodating hole 1724 thereof. A plurality of embedded grooves 1724a are opened on the top, and the plurality of embedded grooves 1724a are distributed at circumferential intervals centered on the central axis of the cylindrical body 160b of the upper cartridge 160. The center is distributed at intervals around the circumference. The power output shaft connection assembly also includes an installation insert 175. The outer side wall of the installation insert 175 is provided with a number of embedding posts 1751. The installation insert 175 is embedded in the lower accommodating hole 1724. The posts 1751 are embedded in each of the embedded grooves 1724 a in a one-to-one correspondence. Thus, by providing the mounting inserts 175 , the connection firmness of the lower cartridge 170 and the third power output shaft 153 can be further improved. In a specific application, the installation insert 175 can be made of metal material, and the lower cartridge can be made of plastic material, and the connection structure of the installation insert to the lower cartridge can be made by inserting the installation insert into the injection mold of the lower cartridge. In addition, the cooperation between the embedded post 1751 and the embedded groove 1724a can further improve the torque transmission efficiency between the lower cartridge and the power shaft. For another example, the outer side wall of the mounting insert 175 is protruded with an embedded portion 1754 , the side wall of the lower cartridge is recessed with an embedded groove 1724 in the lower accommodating hole 1724 , and the embedded portion 1754 of the mounting insert 175 is embedded in the embedded groove 1724 Inside. Preferably, the embedded portion has a polygonal shape, and the embedded groove has a shape corresponding to the embedded portion. In this way, the connection strength between the lower cartridge and the mounting insert can be made higher, and the mounting insert can better transmit the torque of the third power output shaft to the lower cartridge. Please refer to FIG. 19 in conjunction with FIG. 18 , the mounting insert 175 is provided with a power shaft mounting hole 1753 and a screw passing hole 1752 which are connected in sequence along the central axis direction of the cylinder body 160 b of the upper cartridge 160 , and the screw passing hole 1752 Closest to the lower installation hole 1723 , the diameter of the power shaft installation hole 1753 is larger than the diameter of the screw penetration hole 1752 . The power shaft mounting hole is used to install and accommodate the end of the third power shaft 153. Referring to FIG. 5, the rod portion of the lower screw 320 passes through the lower installation hole 1723 and the screw penetration hole 1752 in sequence and is screwed into the screw hole 153a of the three power output shafts 153, so as to connect the lower cartridge, the installation insert and the third power The output shaft 153 is fixed. In one embodiment, referring to FIG. 4 and FIG. 19 , a plurality of locking grooves 1531 are defined on the outer side wall of the end of the third power output shaft 153 , please refer to FIG. The inner side wall is protruded with a plurality of locking posts (not shown) corresponding to the locking slots 1531 one-to-one, and the locking posts are inserted into the locking slots. In this way, the cooperation between the locating post and the locating slot has a better limiting effect, which can further improve the fastening strength of the third power output shaft and the mounting insert, thereby improving its torque transmission efficiency.

In order to better install the small bucket pulsator in the small bucket, please refer to FIG. 5 again in conjunction with FIG. The bottom wall of the small barrel 130 is provided with a small barrel mounting hole 1312 , and the small barrel mounting hole 1312 penetrates through the top of the mounting post 131 . 5 and 15, the washing machine also includes splines 221 and bearings 222. The bearings 222 are supported in the mounting hole 1312 of the small tub, and the splines 221 are fixed in the inner ring of the bearing 222, so that the splines can be relative to the mounting holes of the small tub. turn. The splines 221 are connected to the keg pulsator 140 . For example, the installation of splines and small barrel impellers can refer to the previous content. In this way, the small barrel pulsator can be rotatably arranged on the mounting post 131 through the spline and the bearing. It is also possible to connect the small bucket pulsator to the upper cartridge through splines, so that the third power output shaft 153 drives the small bucket pulsator to rotate through the upper and lower cartridges. It can be understood that since the bottom wall of the small bucket is provided with a hole, that is, the small bucket installation hole, and at the same time, limited by the detachable characteristics of the small bucket, it is a problem that needs to be solved urgently that the bottom wall of the small bucket does not overflow with water. The installation hole of the bucket does not overflow with water. In one embodiment, the bearing is a water-sealed bearing or a sealed bearing. In this way, a better water sealing effect can be achieved, so that the installation hole of the small barrel does not overflow. In one embodiment, please refer to FIG. 15, FIG. 17 to FIG. 19, the water-sealing bearing 222 has an inner ring 2221 and an outer ring 2222, the inner ring 2221 of the water-sealing bearing is fixedly sleeved outside the splines 221, please refer to FIG. 20, The outer ring 2222 of the water-sealing bearing is fixed on the inner side wall of the mounting hole 1312 of the small bucket. In this way, the installation is firmer. In a specific embodiment, the water-sealing bearing 222 includes an inner ring 2221, an outer ring 2222 and a sealing ring 2223, the inner ring 2221 of the water-sealing bearing is fixedly sleeved outside the splines 221, and the outer ring 2222 of the water-sealing bearing is fixed on the small bucket In the inner side wall of the mounting hole 1312, the inner ring 2221 of the water-sealing bearing is rotatably supported in the outer ring, for example, through balls, or the inner ring is movably sleeved in the outer ring. 18 and FIG. 19, the outer side wall of the outer ring 2222 is extended with a seating portion 2222a, the seating portion is used for placing the sealing ring, and a seating groove 2222b is opened on the seating portion, and the seating groove is used for placing or placing the sealing ring. The sealing ring has a ring structure, the sealing ring is partially embedded in the mounting groove, the sealing ring 2223 is in contact with the side wall and bottom wall of the mounting groove 2222b, and the side of the sealing ring 2223 away from the mounting groove 2222b is in contact with the bottom wall of the positioning groove 131 . In this way, the sealing ring can play a better water sealing effect. In one embodiment, the mounting portion 2222a of the outer ring 2222 is further extended with an extension portion 2222c to the outside. The extension portion 2222c has a circular sheet-like structure. There are several positioning screw holes, the positions of each positioning screw hole correspond to the positions of each extension part screw hole one by one, and each positioning screw hole and each extension part screw hole are respectively fixed by a screw. In this way, the outer ring can be preferably fixedly installed in the small barrel installation hole 1312 . In one embodiment, a limiting portion 221a is protruded from the middle of the spline 221, and a limiting protrusion 2222d is protruded on the inner side wall of the outer ring 2222. The limiting protrusion 2222d divides the cavity of the outer ring into an upper accommodating cavity 2222e and a lower accommodating cavity 2222d. The placement cavity 2222f, the limiting protrusion encloses the middle placement cavity 2222g, and the number of inner rings 2221 is set to two, namely the upper inner ring and the lower inner ring, and the upper inner ring and the lower inner ring are both sleeved outside the splines 221 , the upper inner ring is supported in the upper placement cavity, the lower inner ring is supported in the lower placement cavity, the limit part 221a of the spline is accommodated in the upper placement cavity, the limit part is in the shape of a circular ring as a whole, and the The diameter is larger than the diameter of the middle accommodating cavity 2222g, and the limiting portion 221a of the spline is located between the limiting protrusion 2222d and the upper inner ring. In this way, the spline can be better limited to prevent it from falling out of the inner ring. In one embodiment, the water-sealing bearing further includes an accommodating limit ring, the accommodating limit ring is sleeved outside the splines, and the accommodating limit ring is located between the upper inner ring and the lower inner ring, and the accommodating limit ring is It includes a connected accommodating ring portion and a limiting ring portion, the outer diameter of the accommodating ring portion is respectively larger than the outer diameter of the limiting ring portion and the diameter of the middle placement cavity, the limiting ring portion is accommodated in the upper placement cavity, and the capacity The placing ring portion is accommodated in the middle placing cavity, and the limiting portion of the spline is located between the limiting ring portion and the limiting protrusion. In this way, by arranging the accommodating limiting ring, the spline can be further limited to prevent it from falling out of the inner ring. In addition, the splines provided in this embodiment have better flexibility by providing two inner rings, which can better improve the torque transmission efficiency, and can also improve the overall service life of the water-sealing bearing.

It should be noted that the volume and area of the small barrel are relatively small, so the area and diameter of the introduced small barrel impeller are also relatively small. How to further improve the water flow disturbance ability after introducing a small barrel pulsator into a small barrel is an urgent problem to be solved. In order to improve the water flow disturbance capability of the small bucket pulsator, please refer to FIGS. 20 and 21, the application also provides a small bucket pulsator 140. The pulsator includes a small bucket pulsator body 140a, and the small bucket pulsator body 140a is located in the middle of one side. The protruding part 142 is formed, or in other words, the middle part of the surface of the keg pulsator body facing the opening of the keg protrudes to form a protruding part. The raised portion 142 forms a cavity 143 on the other side of the barrel pulsator body 140a, and the small barrel pulsator body 140a has a connecting column 144 in the middle of one side of the cavity, and the connecting column 144 is used to install the splines 221. A fixing hole 141 is opened in the middle of the barrel pulsator body 140a, the fixing hole 141 is connected with the cavity 143, the fixing hole 141 is penetrated through the connecting column 144, and the fixing hole is a screw hole. The connecting column is used to connect and install the power transmission mechanism of the connecting drive device, and the connecting column can open a fixing hole with a larger depth, and then can open a thread with a longer length. Compared with the small barrel pulsator body with a smaller thickness, the power transmission mechanism connected to the driving device is installed through the connecting column. Because of the long thread, the installation structure of the small barrel pulsator and the power transmission mechanism can be made stronger. The loss of the small barrel pulsator can be reduced to a certain extent. For example, the height of the connecting post is 20 mm to 30 mm. Preferably, the height of the connecting column is 23 mm to 26 mm. In this way, it can better ensure that the thread length in the fixing hole is suitable. 20 and 21, a plurality of small barrel pulsator ribs 1421 are protruded on the protruding portion 142, and each small barrel pulsator rib 1421 extends from the peripheral edge of the small barrel pulsator body 140a to the small barrel pulsator body 140. The axis of rotation extends in a spiral. In this way, the side of the small bucket pulsator 140 facing the opening direction of the small bucket 130 can have a larger surface area, and the small bucket pulsator rib can be provided with a longer length, which can further improve the water flow disturbance capability of the small bucket pulsator 140 , so that the cleaning effect of the clothes in the small tub can be further improved. As another example, the mounting post 132 is located at least partially within the cavity 143 . For another example, a plurality of small barrel pulsator ribs 1421 are protruded on the convex part 142, and the small barrel pulsator ribs 1421 extend from the periphery of the small barrel pulsator 140 to the rotation axis of the small barrel pulsator 140 in a swirl shape. In this way, compared with the traditional flat pulsator, the protrusion of the small bucket pulsator can be provided with a rib with a longer length, so that the water flow disturbance capability during the cleaning process can be improved. For another example, the convex ribs of each small barrel pulsator are distributed in an annular array with the rotation axis of the small barrel pulsator body as the center. For example, the number of keg pulsator ribs is 3 to 8. For another example, the ratio of the height of the cavity to the maximum diameter of the keg pulsator body is 0.2:1 to 0.7:1. For example, the height of the keg pulsator is 90 mm to 110 mm. In this way, the water flow disturbance capability can be further improved, thereby improving the cleaning effect in the small bucket. It should be noted that the maximum diameter of the cavity is the maximum diameter of the section of the cavity along the height direction of the keg, or the diameter of the largest circular section of the keg pulsator body along the height direction of the keg. For example, the ratio of the height of the cavity to the diameter of the largest circular section of the cavity is 1/3. In this way, the cavity can better accommodate the mounting post, and the small barrel pulsator rib with a suitable length can be set. In one embodiment, the keg pulsator protruding rib 1421 has opposite positive water-repellent side 1421a and reverse water-repellent side 1421b along the circumferential direction of the keg pulsator body 140a, and the positive water-repellent side 1421a is located at the positive The side that the tangential centrifugal force points to during the rotation, the reverse water-flushing side 1421b is located on the side where the tangential centrifugal force points to the small bucket pulsator during the reverse rotation, and the positive water-flushing side 1421a is convex along the small bucket pulsator. The extending direction of the rib has opposite ends, and the positive water-repellent side 1421a is gradually recessed from the two ends to the middle in the direction close to the reverse water-repellent side 1421b; The opposite water-repellent side surfaces 1421b gradually protrude from the two ends to the middle in a direction away from the positive water-repellent side surfaces 1421a. In this way, the arrangement of the positive water-repellent side 1421a and the reverse water-repellent side 1421b has a better water flow disturbance effect, which can further improve the cleaning effect of the clothes in the small tub. In order to improve the structural strength of the keg pulsator, for example, an annular reinforcing rib 1431 is protruded from the inner surface of the cavity 143 around the rotation axis of the keg pulsator 140; for another example, the inner surface of the cavity 143 is radially A radial reinforcing rib 1432 protrudes in the direction. For another example, a plurality of radial reinforcing ribs 1432 are provided. In this way, by arranging a plurality of annular reinforcing ribs 1431 and radial reinforcing ribs 1432, the small barrel pulsator can be better reinforced, and the damage rate of the small barrel pulsator during use can be reduced. For another example, a plurality of annular reinforcing ribs 1431 are provided, and the plurality of annular reinforcing ribs 1431 are distributed at radial intervals along the rotation axis of the small barrel pulsator 140 . In this way, the plurality of annular reinforcing ribs 1431 distributed at radial intervals can further strengthen the small barrel pulsator and reduce the damage rate of the small barrel pulsator during use. As another example, the diameter of the mounting post is 1/3 of the smallest diameter of the keg. For example, the height of the mounting post is 80 mm to 110 mm. In this way, the keg pulsator can be better installed. For example, the height of the keg impeller is 1/4 to 3/5 of the smallest diameter of the keg, preferably 2/5 of the smallest diameter of the keg. In this way, the laundry cleaning effect in the small tub can be better improved.

When the washing machine with a small tub pulsator of the present application needs to be used to wash clothes: for example, when the large tub 110 needs to be used to clean the clothes in it, after removing the small tub and the small tub pulsator from the large tub pulsator, It can be cleaned according to the normal washing machine. Specifically, the rotation of the first power output shaft 151 and the second power output shaft 152 can be controlled to drive the vat 110 and the vat pulsator 120 to rotate respectively, and the rotation directions of the vat 110 and the vat pulsator 120 can be controlled to be opposite. The washing of the clothes in the vat 110; when the clothes in the vat 110 need to be dehydrated, the rotation of the first power output shaft 151 and the second power output shaft 152 is controlled, so that the rotation direction of the vat 110 and the vat pulsator 120 is the same, The dehydration operation of the clothes in the large tub 110 is completed by spinning and drying the clothes in the large tub under the action of centrifugal force. It should be noted that the vat can be implemented with reference to the vat in the prior art. It should be noted that, how to control the rotation direction of the vat or the pulsator of the vat for washing and dehydration can also be realized with reference to the prior art. For example, when the small tub 130 needs to be used to wash the clothes in it, after the small tub is installed on the large tub pulsator, the second power output shaft 152 and the third power output shaft 153 are controlled to rotate, and the second power output shaft 152 passes through The large bucket pulsator 120 drives the small bucket 130 to rotate, and the third power output shaft 153 drives the small bucket pulsator 140 to rotate, so that the rotation direction of the small bucket pulsator 140 is opposite to the rotation direction of the small bucket 130, so as to realize the inner diameter of the small bucket. The effect of strong agitation of the water flow to complete the cleaning operation of the clothes in the small bucket. When the clothes in the small tub 130 need to be dehydrated, the rotation of the second power output shaft 152 and the third power output shaft 153 is controlled to make the small tub 130 and the small tub pulsator 140 rotate in the same direction, and through the action of centrifugal force The clothes in the small tub 130 are spin-dried to complete the dehydration operation of the clothes in the small tub 130 . Of course, the specific control method is not limited to this, and other cleaning methods known in the art can also be used. It is only necessary to treat the small tub and the small tub pulsator as a whole as a common pulsator washing machine to control it for cleaning.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims (10)

1. A washing tub assembly for a washing machine, comprising:

the bottom wall of the big barrel is provided with a big barrel through hole;

the big barrel impeller is positioned in the big barrel;

the three-power clutch is provided with three coaxial power output shafts which are respectively a first power output shaft, a second power output shaft and a third power output shaft from outside to inside, the first power output shaft is connected with the big barrel, and the first power output shaft is used for driving the big barrel to rotate; the second power output shaft penetrates through the large barrel penetrating hole and is connected with the large barrel impeller, and the second power output shaft is used for driving the large barrel impeller to rotate.

2. The washing machine washing barrel assembly according to claim 1, further comprising a barrel flange fixedly connected to the outside of the bottom wall of the barrel, wherein a barrel flange through hole is formed in the middle of the barrel flange, a first bearing ring is fixed outside the first power output shaft, the first bearing ring is fixedly connected to one surface of the barrel flange away from the barrel, the first power output shaft drives the barrel to rotate through the barrel flange, and the second power output shaft sequentially penetrates through the barrel flange through hole and the barrel through hole and is connected to the barrel pulsator.

3. The washing machine tub assembly as claimed in claim 2, wherein the first bearing ring has a plurality of fastening holes, the tub flange has a plurality of through holes corresponding to the fastening holes of the first bearing ring, and the fastening holes of the first bearing ring and the through holes of the tub flange are fastened by screws, respectively.

4. A washing machine washing tub assembly according to claim 3, wherein the fixing holes of the first bearing ring are distributed in a circular array centered on the first power take-off shaft.

5. A washing machine washing barrel assembly according to claim 4, wherein the outer side of the bottom wall of the tub is provided with a plurality of fixing posts, screw holes are formed on the fixing posts, a plurality of through holes corresponding to the fixing posts are formed on the tub flange, and the screw holes on the fixing posts and the through holes on the tub flange are respectively fixed by a screw.

6. A washing machine washing tub assembly as claimed in claim 5, in which the tub flange projects upwardly at its middle, the tub flange through-hole and the through-holes are provided in the projecting region of the tub flange, and the through-holes are provided in the non-projecting region of the tub flange.

7. A washing machine washing tub assembly according to claim 1, further comprising a tub pulsator flange, the big barrel impeller flange plate is fixedly connected with the side surface of the wall of the big barrel impeller close to the big barrel bottom, a fastening hole is arranged in the middle of the big barrel impeller flange, a limit ring is fixed outside the second power output shaft, the end part of the second power output shaft extends out of the limit ring, the part of the second power output shaft extending out of the limit ring comprises a fastening part and a screwed part which are connected, the fastening part is arranged close to the limiting ring, the barrel impeller flange is fixed outside the fastening part through the fastening hole, the big barrel impeller flange plate is abutted against the limit ring, a fixed helicoid is externally screwed on the screwing part, the fixed helicoid is abutted with the barrel impeller flange plate, and the second power output shaft is used for driving the barrel impeller to rotate through the barrel impeller flange plate.

8. The washing machine washing tub assembly of claim 7, wherein the tub pulsator flange has a star-shaped structure, a plurality of end corners of the tub pulsator flange are provided with through holes, one side of the tub pulsator adjacent to the bottom wall of the tub is provided with a plurality of tub screw holes corresponding to the through holes, and each of the through holes and each of the tub screw holes are fixed by a screw in a one-to-one correspondence.

9. The washing machine washing tub assembly of claim 8, further comprising an outer tub, wherein the tub is located in the outer tub, an outer tub mounting hole is formed in a bottom wall of the outer tub, the triple power clutch is fixed on an outer side of the bottom wall of the outer tub, and three coaxial power output shafts of the triple power clutch pass through the outer tub mounting hole.

10. A washing machine, characterized by comprising a washing machine washing tub assembly as claimed in any one of claims 1 to 9.

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