CN114108270B - Drainage device and laundry equipment - Google Patents

Abstract

The embodiment of the application provides a drainage device and washing equipment, wherein the drainage device comprises a valve seat, a valve core and a transmission rod mechanism, the valve seat is provided with a through hole and a guide groove, the valve core comprises a valve column and a guide rib, the first end of the valve column is positioned in the valve seat, the guide rib protrudes out of the surface of the valve column, and the guide rib stretches into the guide groove and can slide in the guide groove; the transmission rod mechanism is rotatably arranged in the through hole in a penetrating way, and the power output end of the transmission rod mechanism drives the valve core to translate between a sealing position for sealing the drain hole and a drain position for opening the drain hole. According to the drainage device provided by the embodiment of the application, no matter how the rotation speed of the inner cylinder is, the valve core can be switched between the sealing position and the drainage position only by enabling the transmission rod mechanism to rotate, so that the drainage of the inner cylinder is facilitated, and the reliability is high; the sliding fit of the guide rib and the guide groove can improve the reliability of the movement of the valve core and prevent the valve core from deflecting transversely.

Description

Drainage device and laundry equipment

Technical Field

The application relates to the technical field of clothes washing and protecting, in particular to a drainage device and washing equipment.

Background

The prior washing equipment is characterized in that an inner barrel and an outer barrel are mutually communicated, the inner barrel is used for containing clothes, the outer barrel is used for containing water, a large number of water through holes are formed in the inner barrel, the inner barrel and the outer barrel are communicated through the water through holes, water in the outer barrel enters the inner barrel, water is injected and discharged through the outer barrel, dirt is easily collected between the inner barrel and the outer barrel, bacteria are bred, and the washing equipment is not easy to clean. Therefore, in the related art, a washing device with a single drum washing is presented, unlike the existing washing method, the inner drum is a non-porous inner drum and isolated from the outer drum, and the single drum is not only used for holding clothes, beating or stirring the clothes, but also used for holding water, but the drainage and dehydration of the washing device with the single drum washing become a difficult technology to overcome.

In the related art, a dewatering opening and a dewatering valve are arranged on the side wall of an inner cylinder, the dewatering valve is connected with the inner cylinder through a spring, when the inner cylinder is dewatered, the dewatering valve opens the dewatering opening under the action of the rotating centrifugal force of the inner cylinder, and water in the inner cylinder can be discharged out of the inner cylinder through the dewatering opening; when the inner cylinder is washed, the dewatering valve closes the dewatering port under the action of the spring.

In the scheme, the dewatering valve can be opened only when the inner cylinder rotates at a high speed, when the washing process in the inner cylinder is finished, a large amount of water is contained in the inner cylinder, and the motor is required to drive the inner cylinder and the water in the inner cylinder to rotate at a high speed so as to realize water drainage; on the one hand, the inner cylinder cannot realize water drainage under low-speed rotation, and on the other hand, the motor can be operated in overload.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a drainage device and a laundry apparatus that facilitate drainage.

In order to achieve the above-mentioned purpose, an embodiment of the present application provides a drainage device for sealing a drainage hole on an inner cylinder of a laundry device, the drainage device including a valve seat, a valve core and a transmission rod mechanism, the valve seat being provided with a through hole and a guide groove, the valve core including a valve stem and a guide rib, a first end of the valve stem being located in the valve seat, the guide rib protruding from a surface of the valve stem, the guide rib extending into the guide groove and being capable of sliding in the guide groove; the transmission rod mechanism rotationally penetrates through the through hole, the transmission rod mechanism comprises a power output end and a power input end, the power output end is located in the valve seat and is in driving connection with the valve column so as to drive the valve core to translate between a sealing position of the sealing drain hole and a drain position of the opening drain hole, and the power input end is located outside the valve seat.

In some embodiments, the valve element includes a valve plate disposed at the second end of the spool and positioned outside the valve seat.

In some embodiments, the drive rod mechanism has a rotational centerline, and the direction of movement of the valve spool is perpendicular to the rotational centerline.

In some embodiments, the transmission rod mechanism has a rotation center line, in a plane projection perpendicular to the movement direction of the valve core, the guide grooves are disposed on two opposite sides of the rotation center line in the valve seat, and the guide ribs are disposed on two opposite sides of the rotation center line in the valve column.

In some embodiments, the valve seat comprises a seat body and a partition wall located in the seat body, the through hole is formed in the seat body, the partition wall is located on one side, away from the transmission rod mechanism, of the valve column, and the valve column is in sliding contact with the partition wall.

In some embodiments, the surface of the spool facing the side of the partition wall is an arcuate surface, the shape of the partition wall being adapted to the arcuate surface of the spool, the arcuate surface of the spool being in sliding contact with the surface of the partition wall; and/or, a plurality of ribs are arranged on one side of the partition wall, facing the valve column, and extend along the movement direction of the valve column, and the partition wall is in sliding contact with the valve column through the ribs.

In some embodiments, two ends of the partition wall are connected with the inner wall of the seat body, the valve seat further comprises a limiting rib protruding out of the inner wall of the seat body, and the limiting rib and the partition wall are arranged at intervals to form the guide groove at intervals of the limiting rib and the partition wall.

In some embodiments, the surface of the valve column facing the side of the transmission rod mechanism is a plane, a plurality of ribs are arranged on the plane, and the plurality of ribs jointly define a chute on the surface of the valve column; the power output end of the transmission rod mechanism extends into the sliding groove and can move in the sliding groove.

In some embodiments, the drainage device comprises a first torsion spring; the first torsion spring comprises a spiral body, a first rotating arm and a second rotating arm, the first rotating arm is connected with the valve seat, the spiral body is arranged in a suspending mode, and the second rotating arm is connected with the valve column or the transmission rod mechanism; the valve core is provided with a middle critical position between the sealing position and the drainage position, and when the transmission rod mechanism drives the valve core to pass through the middle critical position, the first torsion spring can drive the valve core to move continuously to the sealing position or the drainage position.

In some embodiments, the second rotating arm is connected to the spool, and the first torsion spring is disposed on a side of the spacer wall facing away from the spool; the valve core further comprises a first convex column protruding out of the surface of the valve column, the partition wall is provided with a limiting groove, the first convex column penetrates through the limiting groove, and the first rotating arm is connected with the first convex column.

In some embodiments, the valve seat includes a reinforcing wall connected between the partition wall and an inner wall of the seat body, the valve seat includes a first stopper structure protruding from a surface of the reinforcing wall and a second stopper structure, the first stopper structure is located at a top side of the second stopper structure, the second swivel arm is in stopper contact with a bottom side of the first stopper structure when the valve cartridge is in a sealing position, and the second swivel arm is in stopper contact with a top side of the second stopper structure when the valve cartridge is in a drainage position.

In some embodiments, the transmission rod mechanism includes a transmission rod, a first deflector rod and a reversing piece, the reversing piece is connected between the valve core and a first end of the transmission rod, the transmission rod mechanism drives the valve core to translate through the reversing piece, the transmission rod is arranged in the through hole in a penetrating way, and the first deflector rod is positioned outside the valve seat and connected to a second end of the transmission rod.

In some embodiments, the valve seat comprises a seat body and a sleeve positioned outside the seat body, the sleeve being covered around the through hole; the transmission rod rotationally penetrates through the sleeve and the through hole.

In some embodiments, the valve seat comprises a shaft sleeve arranged in the sleeve, the shaft sleeve is sleeved on the transmission rod, a stop convex part is arranged on the inner surface of the sleeve or the inner surface of the through hole, and the end part of the shaft sleeve, which faces to one side of the valve core, is abutted against the stop convex part.

In some embodiments, the valve seat further comprises a stop disc located outside the seat body, the stop disc surrounding the sleeve circumferential surface.

The embodiment of the application also provides a washing device which comprises an inner cylinder, a driving mechanism and any water draining device; the inner cylinder can hold water and is provided with a drain hole; the water draining device is connected with the inner cylinder, and the driving mechanism drives the transmission rod mechanism to rotate so that the transmission rod mechanism drives the valve core to translate relative to the valve seat.

According to the drainage device provided by the embodiment of the application, no matter how the rotation speed of the inner cylinder is, the valve core can be switched between the sealing position and the drainage position only by enabling the transmission rod mechanism to rotate, the structure is simple, the drainage of the inner cylinder is convenient, the reliability is higher, and the service life of the drainage device can be effectively prolonged. In addition, the sliding fit of the guide rib and the guide groove can improve the reliability of the movement of the valve core and prevent the valve core from deflecting transversely.

Drawings

FIG. 1 is a schematic view of a drainage device according to an embodiment of the present application;

FIG. 2 is an exploded view of the structure of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 2 from another perspective;

FIG. 4 is a schematic view of the structure of FIG. 1 from another perspective, with the flexible seal and valve plate omitted;

FIG. 5 is a cross-sectional view of the drain shown in FIG. 1 taken along the direction A-A in FIG. 5, with the valve cartridge in a sealed position;

FIG. 6 is a schematic view of the structure of FIG. 5 in another state, wherein the valve spool is in a drainage position;

FIG. 7 is a schematic view of the valve seat shown in FIG. 3;

FIG. 8 is a schematic view of the commutator shown in FIG. 3;

FIG. 9 is a schematic view of the mating of the flat shaft portion with the reversing element shown in FIG. 2, wherein the flat shaft portion is in an initial position with the reversing element in a sealing position with the spool in a sealing position, and the center line of rotation is reduced to point O;

FIG. 10 is a schematic view of the structure of FIG. 9 in another state, wherein the flat shaft portion drives the reversing element to move at an angle in the direction of the arrow;

FIG. 11 is a schematic view of the structure of FIG. 10 in another state, wherein the reversing element continues to rotate a certain angle in the counterclockwise direction of FIG. 10, and the reversing element in this position causes the valve core to be in the drainage position, and the flat shaft portion rotates a certain angle in the clockwise direction of FIG. 10 to return to the original position;

FIG. 12 is an exploded view of a drainage device according to a second embodiment of the present application;

FIG. 13 is a schematic view of the structure of FIG. 12 from another perspective;

FIG. 14 is a schematic view of the structure of FIG. 12 from another perspective after assembly, with the flexible seal, valve cover and valve plate omitted;

fig. 15 is a schematic view of the structure of the reversing element shown in fig. 13;

fig. 16 is a schematic view showing a part of the structure of a laundry apparatus according to an embodiment of the present application;

FIG. 17 is a cross-sectional view of the structure illustrated in FIG. 16, with the valve spool in the sealing position and the second lever retracted;

FIG. 18 is a schematic illustration of the second lever in the configuration of FIG. 17 after extension;

FIG. 19 is a schematic view of the alternative configuration of FIG. 16, with the valve cartridge in a drainage position and the second lever retracted;

FIG. 20 is a schematic view illustrating movement of an inner barrel, a first lever and a second lever according to an embodiment of the present application, wherein the first lever is brought into contact with the first lever;

fig. 21 is a schematic view of the inner cylinder 11 of fig. 20 rotated by a certain angle in the clockwise direction.

Description of the reference numerals

An inner cylinder 11; a drain hole 11a; an outer tub 12; lifting ribs 14; a driving mechanism 2; a power unit 21; a second lever 22; a drainage device 3; a valve element 31; a chute 31a; a spool 311; a rib 3111; a plane 311a; a valve plate 312; a first post 313; a first insertion hole 313b; a guide rib 314; a transmission lever mechanism 32; a transmission rod 321; a flat shaft portion 3211; bump 3212; a first lever 322; a stem 3221; a cylindrical portion 3222; a reversing member 323; a turntable 3231; a protrusion 32311; a second post 3232; a first driving groove 3231a; a first driving surface 3231b; a through hole 3231c; an elastic restoring member 33; a first torsion spring 34; a screw 341; a first rotating arm 342; a second swivel arm 343; a valve seat 35; a through hole 35a; a guide groove 35b; a limit groove 35c; a stopper protrusion 35f; a first stop structure 351; a second stop structure 352; a seat body 353; a partition wall 354; ribs 354a; a first sub-wall 3541; a second sub-wall 3542; a limit rib 355; reinforcing wall 356; a sleeve 357; a sleeve 358; a stopper plate 359; a flexible seal 36; a telescopic tube 361; a support end plate 362; a flange 363; a seal chamber 3a; valve cover 37

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present application and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as unduly limiting the present application.

In the description of the embodiment of the present application, the "upper", "lower", "front", "rear" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 17. In the figure, the upper part is "upper", the lower part is "lower", the left part is "front", and the right part is "rear".

It is to be understood that such directional terms are merely used to facilitate the description of the application and to simplify the description, and are not intended to indicate or imply that the devices or elements so referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus are not to be construed as limiting the application.

The embodiment of the application provides a drainage device 3, which is used for washing equipment. Referring to fig. 1 to 14, the drain 3 includes a valve seat 35, a valve element 31, and a transmission rod mechanism 32.

The embodiment of the present application further provides a laundry apparatus, referring to fig. 16 to 21, which includes an inner tub 11, a driving mechanism 2, and a drain device 3 according to any embodiment of the present application. Specifically, the drain 3 is connected to the inner cylinder 11, that is, the drain 3 will follow the rotation of the inner cylinder 11.

The inner cylinder 11 can hold water, that is, when the washing device is used for washing clothes, the washing water is held in the inner cylinder 11, the inner cylinder 11 can also be called as a non-porous inner cylinder 11, and the problem that dirt is easy to be accumulated due to the water held by the outer cylinder 12 in the prior art can be avoided; the inner tube 11 is formed with a drain hole 11a (see fig. 19).

Referring to fig. 7, the valve seat 35 is provided with a through hole 35a and a guide groove 35b.

Referring to fig. 2 and 3, the valve core 31 includes a spool 311 and a guide rib 314. It is to be understood that the valve core 31 may be directly contacted with the periphery of the drain hole 11a of the inner cylinder 11, and the valve core 31 may be made of other elastic membrane to abut against the periphery of the drain hole 11 a. Referring to fig. 5 and 6, the first end of the spool 311 is positioned in the valve seat 35, and the guide rib 314 extends into the guide groove 35b and is slidable in the guide groove 35b.

The transmission rod mechanism 32 is rotatably disposed through the through hole 35a, and referring to fig. 4, the transmission rod mechanism 32 has a rotation center line L, and the transmission rod mechanism 32 can rotate around the rotation center line L. The transmission rod mechanism 32 includes a power output end and a power input end, the power output end is in driving connection with the spool 311 to drive the valve core 31 to translate between a sealing position sealing the drain hole 11a and a draining position opening the drain hole 11a, and the power input end is located outside the valve seat 35. That is, the transmission rod mechanism 32 drives the valve body 31 to slide substantially linearly with respect to the valve seat 35, and one side of the valve body 31 for closing the drain hole 11a always faces the drain hole 11a, and when the valve body 31 is switched from the drainage position to the sealing position, the one side of the valve body 31 for closing the drain hole 11a can be smoothly and reliably pressed directly or indirectly against the periphery of the drain hole 11a, so that the sealing reliability of the drain hole 11a can be improved, and the sealing effect is good.

The power input end is used to obtain external power, and the transmission rod mechanism 32 is driven to rotate around the rotation center line L by the obtained power. Specifically, the drive mechanism 2 transmits power to the power input end, and drives the transmission lever mechanism 32 to move.

In the washing process, or in other cases where drainage is not required, referring to fig. 17, the valve core 31 is in a sealed position, the valve core 31 seals the drain hole 11a, water in the inner tub 11 is not discharged, and the inner tub 11 functions as a tub. When water draining or dewatering is required, referring to fig. 19, the valve core 31 is switched from the sealing position to the draining position, the draining hole 11a is opened, and water in the inner cylinder 11 is drained out of the inner cylinder 11 through the draining hole 11 a.

The drainage device 3 of the embodiment of the application has the advantages that no matter what the rotation speed of the inner cylinder 11 is, the valve core 31 can be switched between the sealing position and the drainage position only by enabling the transmission rod mechanism 32 to rotate, the structure is simple, the inner cylinder 11 is convenient to drain, the reliability is higher, and the service life of the drainage device 3 can be effectively prolonged. In addition, the sliding fit of the guide rib 314 and the guide groove 35b can improve the reliability of the movement of the valve core 31 and prevent the valve core 31 from deflecting laterally.

The drain holes 11a may be provided at appropriate positions of the inner tube 11 so long as water in the inner tube 11 can be discharged through the drain holes 11 a. The number and specific shape of the drain holes 11a are not limited.

In the embodiment of the present application, referring to the drawings, the drain holes 11a are formed in the rotation circumference of the inner cylinder 11, so that the inner cylinder 11 can spin water out of the drain holes 11a by centrifugal force during the dehydration process.

The washing machine is drained through the drain hole 11a during or after the washing is completed, and the washing machine is drained through the drain hole 11a during the dehydration.

The rotation axis L1 of the inner tube 11 may extend in the horizontal direction, may extend in the vertical direction, and may extend in an oblique direction between the horizontal direction and the vertical direction, and is not limited thereto.

In an embodiment of the present application, referring to fig. 17 to 19, the rotation axis L1 of the inner cylinder 11 is approximately horizontal, and the drain hole 11a can circulate through the lowest point of the rotation track of the inner cylinder 11 during the rotation of the inner cylinder 11, so as to drain the water in the inner cylinder 11 without dead angle.

Illustratively, in one embodiment, the movement direction of the valve element 31 is along the radial direction of the inner cylinder 11, the rotation center line is along the axial direction of the inner cylinder 11, and the movement direction of the valve element 31 is perpendicular to the rotation center line L of the transmission rod mechanism 32. On the one hand, the axial direction of the inner cylinder 11 has a long dimension, which facilitates the installation of the transmission rod mechanism 32. It will be appreciated that the valve core 31 need only move a small distance to open the drain hole 11a, and therefore the direction of movement of the valve core 31 is adapted to be in the radial direction of the inner cylinder 11.

It should be noted that the valve element 31 may be integrally formed, for example, integrally injection molded hard plastic, or integrally cast metal. The valve core 31 may be fixedly connected together by a plurality of separate parts.

In one embodiment, referring to fig. 5 and 6, the valve core includes a valve plate 312, and the valve plate 312 is used to seal the drain hole 11a on the inner drum 11 of the laundry device, that is, the valve core 31 directly or directly seals the drain hole 11a through the valve plate 312. The valve plate 312 is disposed at the second end of the spool 311 and is located outside the valve seat 35, i.e. the valve plate 312 is always located outside the valve seat 35, regardless of whether the valve element 31 is in the sealing position or the draining position. Specifically, the second end of the spool 311 protrudes from the opening of the valve seat 35 to the outside of the valve seat 35 and is connected to the valve plate 312. In this embodiment, since the valve plate 312 is always located at the outer side of the valve seat 35, the valve plate 312 can be made larger in size, the valve column 311 can be made relatively smaller in size, and the valve seat 35 does not need to reserve a larger installation space for the valve plate 312, so that the valve seat 35 can be compact in structure.

The number and arrangement positions of the guide grooves 35b and the guide ribs 314 are not limited. In an exemplary embodiment, referring to fig. 4 and 14, in a plane projection perpendicular to the movement direction of the valve element 31, guide grooves 35b are disposed on opposite sides of the rotation center line in the valve seat 35, and guide ribs 314 are disposed on opposite sides of the rotation center line in the spool 311. So that the valve core 31 is relatively uniformly stressed in the left-right direction in fig. 4 or 14, and the guide rib 314 is prevented from being blocked in the guide groove 35 b. Specifically, when the transmission lever mechanism 32 rotates about the rotation center line L, a component force in the up-down direction in fig. 4 or 14 may be applied to the valve element 31, and a component force in the left-right direction in fig. 4 or 14 may be applied to the valve element 31, and the engagement of the guide groove 35b and the guide rib 314 may limit the yaw of the valve element 31 in the left-right direction in fig. 4 or 14, and may limit the yaw of the valve element 31 in the up-down direction in fig. 4 or 14.

The specific structure of the valve seat 35 is not limited, and in an exemplary embodiment, referring to fig. 7, the valve seat 35 includes a seat body 353 and a partition wall 354 disposed in the seat body 353, the seat body 353 is opened toward one side of the drain hole 11a, and a through hole 35a is disposed on the seat body 353, and specifically, the through hole 35a penetrates one of the side walls of the seat body 353. The partition wall 354 is located on a side of the spool 311 facing away from the rotation lever mechanism, and the spool 311 is in sliding contact with the partition wall 354. The partition wall 354 plays a better guiding role on the valve column 311, and because the valve column 311 is positioned between the partition wall 354 and the power output end of the transmission rod mechanism 32, the partition wall 354 can balance the acting force applied by the transmission rod mechanism 32 on the valve column 311 along the rotation center line direction of the transmission rod mechanism 32, namely, the partition wall 354 plays a certain counter-force support on the valve column 311, the sliding contact area of the valve core 31 and the valve seat 35 is increased, and the clamping stagnation of the valve core 31 is further prevented.

In one embodiment, referring to fig. 3, a surface of the spool 311 facing the side of the driving rod mechanism 32 is a plane 311a, the plane 311a is provided with a plurality of ribs 3111, and the plurality of ribs 3111 define a chute 31a on the surface of the spool 311; the power take-off end of the drive rod mechanism 32 extends into the slide slot 31a and is movable in the slide slot 31 a. The protruding ribs 3111 are formed into the sliding grooves 31a, so that the molding processing of the spool 311 can be facilitated, and the structural strength of the spool 311 is not affected.

In one embodiment, referring to fig. 4 and 14, the surface of the side of the spool 311 facing the partition 354 is an arc-shaped surface, the shape of the partition 354 is adapted to the arc-shaped surface of the spool 311, and the arc-shaped surface of the spool 311 is in sliding contact with the surface of the partition 354. The curved partition wall 354 also serves to self-center the spool 311, for example, when the spool 311 is deflected by a certain amount in the up-down direction in fig. 4 or 14, the spool 311 can return to a position concentric with the curved partition wall 354 again.

In one embodiment, referring to fig. 4, 7 and 14, the surface of the partition wall 354 facing the spool 311 is provided with a plurality of ribs 354a, the ribs 354a extend along the movement direction of the spool 311, and the partition wall 354 is in sliding contact with the spool 311 through the ribs 354 a. The ribs 354a reduce friction between the partition wall 354 and the surface of the spool 311, and reduce resistance to movement of the spool 311, so that the spool 311 slides more smoothly.

It should be noted that the end surfaces of the ribs 354a facing the spool 311 together define an arc-shaped surface adapted to the surface of the spool 311.

In an embodiment, referring to fig. 4, 7 and 14, two ends of the partition wall 354 are connected to the inner wall of the seat body 353, and the valve seat 35 further includes a limiting rib 355 protruding from the inner wall of the seat body 353, where the limiting rib 355 and the partition wall 354 are spaced apart to form the guide groove 35b at the interval therebetween. The partition 354 and the limit rib 355 can play a role in reinforcing the structural strength of the seat body 353.

In an embodiment, referring to fig. 2, 3, 12 and 13, the drainage device 3 includes a first torsion spring 34, the first torsion spring 34 includes a spiral body 341, a first rotating arm 342 and a second rotating arm 343, the first rotating arm 342 is connected with the valve seat 35, the second rotating arm 343 is connected with the valve core 31 or the transmission rod mechanism 32, and the spiral body 341 is suspended. That is, the valve core 31 drives the second rotating arm 343 to move together during the translation process, the second rotating arm 343 drives the screw 341 to move, and the position of the screw 341 changes.

Specifically, the spool 31 has an intermediate critical position between the sealing position and the drainage position. The intermediate critical position between the sealing position and the drainage position means that the intermediate critical position is between the sealing position and the drainage position in the movement stroke of the valve element 31, that is, the intermediate critical position is passed when the valve element 31 moves from the sealing position to the drainage position, and the intermediate critical position is also passed when the valve element 31 moves from the drainage position to the sealing position.

When the transmission lever mechanism 32 drives the valve spool 31 beyond the intermediate temporary position, the first torsion spring 34 can drive the valve spool 31 to continue to move to the sealing position or the drainage position. Specifically, when the spool 31 moves from the sealing position toward the drainage position and passes over the intermediate critical position, the first torsion spring 34 can drive the spool 31 to continue to move to the drainage position, that is, when the spool 31 passes over the intermediate critical position, even if the transmission lever mechanism 32 stops driving the spool 31, the spool 31 can continue to move to the drainage position by the action of the first torsion spring 34. When the valve element 31 moves from the drainage position to the sealing position and passes the intermediate critical position, the first torsion spring 34 can drive the valve element 31 to continue to move to the sealing position, that is, when the valve element 31 passes the intermediate critical position, the valve element 31 can continue to move to the sealing position under the action of the first torsion spring 34 even if the transmission rod mechanism 32 stops driving the valve element 31.

The intermediate critical position is only a transition position, and the valve element 31 does not need to be held in this position.

In the embodiment of the application, since the first torsion spring 34 can drive the valve core 31 to continue to move to the drainage position or the sealing position, the driving rod mechanism 32 can stop driving the valve core 31 after the valve core 31 is driven to pass through the critical position and before the valve core 31 reaches the end point, on one hand, the first torsion spring 34 has elasticity, and the valve core 31 is driven to the drainage position or the sealing position by the first torsion spring 34, so that the impact applied when the valve core 31 moves to the end point can be buffered; on the other hand, the accuracy requirement for the movement of the transmission rod mechanism 32 can be reduced, specifically, the transmission rod mechanism 32 can stop driving the valve core 31 at any position after crossing the middle critical position and before reaching the end point, and the movement stroke of the transmission rod mechanism 32 can have a larger degree of freedom, so that the design and installation accuracy requirement for the transmission rod mechanism 32 is not high. For example, if it is necessary to drive the valve element 31 to the sealing position and hold it in the sealing position by the transmission lever mechanism 32, the design and installation accuracy requirements of the transmission lever mechanism 32 are high, because once the transmission lever mechanism 32 deviates from the designed position, there is a possibility that the valve element 31 cannot seal or cannot reliably seal the drain hole 11a.

In one embodiment, referring to fig. 2 to 6, the second rotating arm 343 is connected to the valve core 31. When the valve core 31 is at the sealing position, the force applied by the first torsion spring 34 to the valve core 31 at least has a component force parallel to the movement direction of the valve core 31 and facing the drain hole 11 a; when the valve core 31 is at the drainage position, the force applied to the valve core 31 by the first torsion spring 34 has at least a component force parallel to the movement direction of the valve core 31 and away from the drainage hole 11 a.

Illustratively, when the valve spool 31 is in the sealing position, referring to fig. 5, the second swivel arm 343 is positioned on the side of the first swivel arm 342 adjacent to the drain hole 11a, and the force exerted by the first torsion spring 34 on the valve spool 31 has a component force upward in fig. 5, which urges the valve spool 31 against the periphery of the drain hole 11 a. When the valve element 31 is at the drainage position, referring to fig. 6, the second rotating arm 343 is located at a side of the first rotating arm 342 away from the drainage hole 11a, and the force applied to the valve element 31 by the first torsion spring 34 has a component downward in fig. 6, which keeps the valve element 31 relatively stably at the drainage position.

When the second rotating arm 343 is located at a different position, the direction of the acting force applied by the second rotating arm 343 to the valve core 31 will also change, so that the first torsion spring 34 can drive the valve core 31 to translate toward the drain hole 11a in some travel ranges, and can drive the valve core 31 to translate away from the drain hole 11a in other travel ranges.

It will be appreciated that during the movement of the second rotating arm 343 following the valve core 31, at this intermediate critical position, the force applied by the second rotating arm 343 to the valve core 31 is perpendicular to the movement direction of the valve core 31, that is, the force applied by the second rotating arm 343 to the valve core 31 has no component in the movement direction of the valve core 31, and, illustratively, the force applied by the first torsion spring 34 to the valve core 31 is perpendicular to the paper surface direction of fig. 5 or 6, at this time, the first torsion spring 34 does not drive the valve core 31 to move upward nor the valve core 31 to move downward.

The mounting position of the first torsion spring 34 is not limited as long as the above-described urging force can be applied to the spool 31. For example, referring to fig. 4 and 14, the first torsion spring 34 is disposed on a side of the partition wall 354 facing away from the spool 311, that is, the first torsion spring 34 and the spool 311 are disposed on opposite sides of the partition wall 354. In this way, the first torsion spring 34 can be prevented from interfering with the transmission lever mechanism 32, and structural arrangement of the transmission lever mechanism 32 and the first torsion spring 34 is facilitated, which is advantageous in terms of compactness. For example, the inner tube 11 is large in size in the axial direction, and therefore, the transmission lever mechanism 32 and the first torsion spring 34 can be arranged in the axial direction of the inner tube 11.

In one embodiment, referring to fig. 2, the valve core 31 further includes a first protrusion 313 protruding from the surface of the spool 311, the partition wall 354 has a limiting groove 35c, the first protrusion 313 is disposed in the limiting groove 35c and protrudes from a side of the partition wall 354 away from the spool 311, and the second rotating arm 343 is connected to the first protrusion 313. The valve body 31 is connected to the second rotary arm 343 through the first boss 313, and the first boss 313 has a structure capable of reducing the size of the valve body 31, so that the valve body 311 can provide an installation space for the second rotary arm 343 while maintaining a small size. The limiting groove 35c can avoid the first protruding column 313 on one hand, so that the first protruding column 313 passes through the partition wall 354 and is connected with the second rotating arm 343, on the other hand, the limiting groove 35c also guides the movement of the first protruding column 313, and the first protruding column 313 is prevented from deflecting in the movement process.

In one embodiment, the first boss 313 is provided with a first insertion hole 313b, and the second rotating arm 343 is inserted into the first insertion hole 313b and can rotate in the first insertion hole 313 b. In this way, the second rotating arm 343 can be prevented from bearing torque in the process of following the movement of the valve core 31, and the stress condition of the second rotating arm 343 is improved.

The connection manner of the first rotating arm 342 and the valve seat 35 is not limited, for example, in one embodiment, the valve seat 35 is provided with a second insertion hole, and the first rotating arm 342 is inserted into the second insertion hole and can rotate in the second insertion hole.

The partition 354 may be a continuous wall or may be formed by a plurality of sub-walls arranged in sequence.

With continued reference to fig. 4 and 14, the partition wall 354 includes a first sub-wall 3541 and a second sub-wall 3542, and the first sub-wall 3541 and the second sub-wall 3542 are at least partially spaced apart to form the above-mentioned limit groove 35c at a spacing therebetween.

In one embodiment, referring to fig. 7, the valve seat 35 includes a reinforcing wall 356, the reinforcing wall 356 being connected between the partition wall 354 and the inner wall of the seat body 353, specifically, one end of the reinforcing wall 356 is connected to the partition wall 354, and the other end of the reinforcing wall 356 is connected to the valve seat 35. Referring to fig. 5 and 6 in combination, the valve seat 35 includes a first stop structure 351 and a second stop structure 352 protruding from a surface of the reinforcement wall 356, the first stop structure 351 being located on a top side of the second stop structure 352, and the first stop structure 351 and the second stop structure 352 together defining a movement range of the second rotating arm 343. Specifically, when the valve cartridge 31 is in the sealing position, the second swivel arm 343 is in stopper contact with the bottom side of the first stopper structure 351, and when the valve cartridge 31 is in the drainage position, the second swivel arm 343 is in stopper contact with the top side of the second stopper structure 352. The first stop structure 351 and the second stop structure 352 can play a limiting stop role on the movement of the second rotating arm 343, and prevent the second rotating arm 343 from overmoving.

Note that, the partition wall 354, the reinforcing wall 356, and the seat body 353 may be integrally formed.

The specific structural forms of the first stop structure 351 and the second stop structure 352 are not limited, and may be, for example, a convex hull, a rib, or the like.

The specific structure of the transmission rod mechanism 32 is not limited, and in some embodiments, referring to fig. 2, 3, 12 and 13, the transmission rod mechanism 32 includes a transmission rod 321, a first shift rod 322 and a reversing element 323, the reversing element 323 is connected between the valve core 31 and a first end of the transmission rod 321, and the transmission rod mechanism 32 drives the valve core 31 to translate through the reversing element 323, that is, the reversing element 323 is used to convert the rotation of the transmission rod mechanism 32 into the translation of the valve core 31. The transmission rod 321 is arranged in the through hole 35a in a penetrating way, a first end of the transmission rod 321 is positioned in the valve seat 35, a second end of the transmission rod 321 is positioned outside the valve seat 35, and the first deflector rod 322 is connected to the second end of the transmission rod 321. The driving mechanism 2 selectively toggles the first shift lever 322 or disengages the first shift lever 322. Specifically, after the driving mechanism 2 dials the first shift lever 322, the transmission lever mechanism 32 rotates along with the inner cylinder 11, so that the first shift lever 322 rotates under the combined action of the driving mechanism 2 and the inner cylinder 11, and the first shift lever 322 drives the transmission lever 321 to synchronously rotate.

The connection manner of the first lever 322 and the transmission rod 321 is not limited, as long as the two can realize synchronous movement, for example, the first lever and the transmission rod can be integrally formed, clamped, screwed and the like, and the connection manner is not limited.

It will be appreciated that, in order to facilitate connection of the first lever 322 with the transmission rod 321, in some embodiments, referring to fig. 2 and 12, the first lever 322 includes a lever portion 3221 and a barrel portion 3222 that are fixedly connected, one end of the lever portion 3221 is connected to the barrel portion 3222, and the barrel portion 3222 is sleeved on the second end of the transmission rod 321.

In one embodiment, the second arm 343 of the first torsion spring 34 is coupled to the reversing element 323. Referring to fig. 12 and 13, when the valve core 31 is in the sealing position, the first torsion spring 34 applies a first moment about the rotation center line L to the reversing member 323, and the reversing member 323 abuts the valve core 31 against the periphery of the drain hole 11a under the action of the first moment. When the valve core 31 is at the drainage position, the first torsion spring 34 applies a second moment about the rotation center line L to the reversing element 323, and the reversing element 323 maintains the valve core 31 at the drainage position under the action of the second moment, and the first moment is opposite to the second moment. When the spool 31 is in the intermediate threshold position, the moment applied to the reversing element 323 by the first torsion spring 34 is zero.

In one embodiment, referring to fig. 7, the valve seat 35 includes a sleeve 357 disposed outside the seat body 353, and the sleeve 357 is covered around the through hole 35 a; the transmission rod 321 is rotatably inserted into the sleeve 357 and the through hole 35 a. The sleeve 357 can increase the contact area between the valve seat 35 and the transmission rod 321, better support the transmission rod 321, improve the stress condition of the transmission rod 321, and enable the transmission rod 321 to rotate more stably.

In one embodiment, referring to fig. 5 to 7, the valve seat 35 includes a sleeve 358 disposed in a sleeve 357, the sleeve 358 is sleeved on the transmission rod 321, a stop protrusion 35f is disposed on an inner surface of the sleeve 357 or an inner surface of the through hole 35a, and an end portion of the sleeve 358 facing the valve core 31 abuts against the stop protrusion 35 f. The sleeve 357 can avoid direct friction between the rotating rod 321 and the sleeve 357, and the sleeve 357 can be replaced independently after eccentric wear of the sleeve 357, so that the whole drainage device is not scrapped. The sleeve 357 may be made of wear resistant material.

In assembly, the sleeve 358 is inserted into the sleeve 357 from the outside of the sleeve 357 until the end of the sleeve 358 abuts against the stopper projection 35f, thereby enabling quick positioning of the sleeve 358.

In an embodiment, referring to fig. 8, the reversing element 323 includes a rotating disc 3231 and a second protruding column 3232 protruding from one side of the rotating disc 3231, wherein the second protruding column 3232 is eccentrically disposed with respect to a rotation center line, and the second protruding column 3232 extends into the sliding slot 31a and can rotate in the sliding slot 31 a. The reversing piece 323 is equivalent to a cam transmission mechanism, and when the reversing piece 323 rotates around the rotation center line, the second convex column 3232 can drive the valve core 31 to translate.

In an embodiment, referring to fig. 2, 3, 12 and 13, the drainage device 3 further includes an elastic reset element 33, the driving rod mechanism 32 has an initial position, in which the driving rod 321 can selectively rotate forward or backward, and the elastic reset element 33 can drive the driving rod 321 and the first shifter 322 to idle and reset to the initial position.

Since the first torsion spring 34 can drive the valve core 31 to move to the sealing position or the drainage position, if the driving mechanism 2 stops driving the driving lever mechanism 32 after the driving lever mechanism 32 drives the valve core 31 to pass through the middle critical position, the driving lever 321 and the first shift lever 322 can idle under the action of the elastic reset piece 33 to reset, so when the driving mechanism 2 needs to shift the first shift lever 322 next time, the driving mechanism 2 can shift the first shift lever 322 at the same position, and the driving matching structure of the first shift lever 322 and the driving mechanism 2 can be simplified.

The idle rotation means that the transmission rod 321 does not generate a driving force to the valve element 31 during the idle rotation.

Referring to fig. 8, the rotary table 3231 is provided with a first driving groove 3231a, the opposite sides of the first driving groove 3231a along the rotation direction are respectively provided with a first driving surface 3231b, a first end of the transmission rod 321 is at least partially located in the first driving groove 3231a and can slide in the first driving groove 3231a, and the first end of the transmission rod 321 can be selectively matched with one of the first driving surfaces 3231b to drive the reversing element 323 to rotate around the rotation center line.

It should be noted that, the rotation direction of the transmission lever mechanism 32 is related to the rotation direction of the inner cylinder 11, for example, when the inner cylinder 11 rotates clockwise in fig. 20, if the driving mechanism 2 dials the first lever 322, the first lever 322 only drives the transmission lever mechanism 32 to rotate counterclockwise in fig. 20 around the rotation center line. When the inner cylinder 11 rotates in the counterclockwise direction in fig. 20, if the driving mechanism 2 dials the first shift lever 322, the first shift lever 322 only drives the transmission lever mechanism 32 to rotate clockwise in fig. 20 around the rotation center line.

Specifically, when the valve core 31 is at the sealing position in the washing process of the washing machine, referring to fig. 9, a part of the first end of the transmission rod 321 contacts with one of the first driving surfaces 3231b, at this time, the inner cylinder 11 continuously rotates in the same direction, if the driving mechanism 2 is in a malfunction to toggle the first deflector rod 322, the first deflector rod 322 drives the transmission rod mechanism 32 to rotate clockwise in fig. 9, the first end of the transmission rod 321 idles in the first driving groove 3231a, that is, the first deflector rod 322 and the transmission rod 321 generate an idle stroke, the transmission rod mechanism 32 does not drive the valve core 31 to move, and the valve core 31 can still be kept at the current sealing position, so that the reliability of the washing machine can be improved. When the inner cylinder 11 is reversed, the driving mechanism 2 pulls the first shift lever 322, and the first end of the transmission lever 321 biases the first driving surface 3231b, so that the reversing element 323 is forced to rotate counterclockwise in fig. 9. When rotated to the position shown in fig. 10, the valve core 31 has passed the intermediate critical position, after which, if the driving mechanism 2 no longer applies a force to the first lever 322, the transmission lever 321 is reversed in the clockwise direction of fig. 10, the reversing member 323 continues to rotate in the counterclockwise direction in fig. 10 until moving to the state shown in fig. 11, the valve core 31 is successfully switched from the sealing position to the drainage position, and the transmission lever 321 is also returned to the initial position, at which time the first end of the transmission lever 321 is brought into contact with the other first driving surface 3231 b.

Referring to fig. 11, if the driving mechanism 2 is erroneously operated to toggle the first lever 322 without changing the rotation direction of the inner cylinder 11, at this time, the first lever 322 drives the driving lever mechanism 32 to rotate in the counterclockwise direction in fig. 11, and the first end of the driving lever 321 idles in the first driving slot 3231a, i.e. the first lever 322 and the driving lever 321 generate idle stroke, the driving lever mechanism 32 does not drive the valve core 31 to move, the valve core 31 can still be kept at the current drainage position, and after idling, the driving lever 321 still returns to the initial position under the action of the elastic reset member 33, so that the reliability of the washing apparatus can be improved. When the inner cylinder 11 rotates reversely, the driving mechanism 2 pulls the first deflector rod 322, the first end of the transmission rod 321 biases the other first driving surface 3231b, so that the reversing element 323 is forced to rotate and drive the valve core 31 to translate, and the valve core 31 is driven to switch from the drainage position to the sealing position.

The specific connection structure of the turntable 3231 and the transmission rod 321 is not limited.

In an exemplary embodiment, referring to fig. 8, a through hole 3231c is formed on a turntable 3231, two rotationally symmetrical protrusions 32311 are disposed on an inner wall of the through hole 3231c, two protrusions 32311 space a portion of the through hole 3231c apart from two first driving grooves 3231a distributed along a circumferential direction, a flat shaft portion 3211 located on a rotation center line is disposed at a first end of a transmission rod 321, and opposite ends of the flat shaft portion 3211 along a radial direction of the through hole 3231c extend into corresponding first driving grooves 3231a, referring to fig. 9 to 11. So, on the one hand can make the moment transmission of carousel 3231 and transfer line 321 more steady, on the other hand, the carousel 3231 can be balanced each other to two reaction forces that flat shaft portion 3211 applyed, can avoid or reduce the shearing force that transfer line 321 bore, improves the atress condition of transfer line 321.

In another embodiment, referring to fig. 15, the turntable 3231 is formed with a through hole 3231c, and the first driving groove 3231a penetrates through a portion of a sidewall of the through hole 3231c along a radial direction of the through hole 3231c, that is, the first driving groove 3231a is substantially in a notch shape. Referring to fig. 12 and 13, a protrusion 3212 is disposed on a surface of the transmission rod 321, the transmission rod 321 is disposed through the through hole 3231c, and the protrusion 3212 is disposed in the first driving groove 3231 a. In this embodiment, torque transmission is achieved by the driving engagement of the tab 3212 with the two first driving surfaces 3231b of the first driving groove 3231 a. The specific shape of the bump 3212 is not limited.

The specific shape and type of the elastic restoring member 33 are not limited as long as it can drive the transmission rod 321 to restore. Since the transmission rod 321 can rotate forward and backward with respect to the initial position, the elastic restoring member 33 is required to drive the transmission rod 321 to restore after the transmission rod 321 rotates forward or to drive the transmission rod 321 to restore after the transmission rod 321 rotates backward.

In the embodiment of the present application, the forward rotation and the reverse rotation are opposite, and the definition of the forward rotation and the reverse rotation may be interchanged.

For example, in one embodiment, the elastic restoring member 33 includes a first cylindrical spring and a second cylindrical spring, which are disposed at laterally opposite sides of the transmission rod 321, the first cylindrical spring being compressed when the transmission rod 321 is rotated forward, then the first cylindrical spring being capable of driving the transmission rod 321 to restore, and the second cylindrical spring being compressed when the transmission rod 321 is rotated forward, then the second cylindrical spring being capable of driving the transmission rod 321 to restore.

In another embodiment, referring to fig. 12 and 13, the elastic restoring member 33 is a second torsion spring, and the second torsion spring is sleeved on the transmission rod 321. Whether the transmission rod 321 rotates in the forward direction or in the reverse direction, the transmission rod 321 can force the second torsion spring to twist to store torque potential energy, and then the second torsion spring can drive the transmission rod 321 to reset. In this embodiment, the transmission rod 321 can be driven to reset only through one second torsion spring, so that the structure is simple, the installation is convenient, and the installation space is saved.

It will be appreciated that in some embodiments, a plurality of second torsion springs may also be provided simultaneously.

In an embodiment, referring to fig. 2, 3, 12 and 13, the drainage device 3 includes a flexible sealing member 36, the flexible sealing member 36 is covered on an open side of the valve seat 35, referring to fig. 5 and 6, the flexible sealing member 36 and the valve seat 35 are enclosed together to form a sealing cavity 3a, a valve core 31, a first torsion spring 34, a second torsion spring, and a part of the transmission rod mechanism 32 are all located in the sealing cavity 3a, and the valve core 31 is connected with the flexible sealing member 36 to drive the flexible sealing member 36 to move.

Because the valve core 31, the first torsion spring 34, the second torsion spring, a part of the transmission rod mechanism 32 and the like are arranged in the sealing cavity 3a, the washing water is not contacted, on one hand, the filings in the washing water can not enter the sealing cavity 3a, the filings and other impurities are prevented from being blocked or wound on the transmission rod mechanism 32 and the valve core 31, the normal movement of the valve core 31 can be ensured, and the working reliability and the service life of the drainage device 3 are improved; on the other hand, when the transmission rod mechanism 32 or the valve element 31 is made of a metal material, the corrosive action of the washing water on the metal material can be avoided.

The specific configuration of the flexible seal 36 is not limited.

Referring to fig. 2, 3, 12 and 13, the flexible sealing member 36 includes a telescopic tube 361, a supporting end plate 362 and a flange 363, referring to fig. 5 and 6, the supporting end plate 362 and the flange 363 are located at opposite ends of the telescopic tube 361, the flange 363 is disposed at one axial end of the telescopic tube 361 and connected to the open side of the valve seat 35, the supporting end plate 362 closes the other end of the telescopic tube 361, the valve plate 312 is overlapped on the inner surface of the supporting end plate 362, and when the valve element 31 is in the sealing position, the valve plate 312 abuts the supporting end plate 362 around the drain hole 11 a.

It should be noted that the flexible sealing member 36 may be an integrally formed structure to improve the structural reliability of the flexible sealing member 36. The material of the flexible seal 36 is not limited and includes, for example and without limitation: silica gel, rubber, and the like.

The flexible seal member 36 is required to reliably seal the drain hole 11a in the sealing position and reliably avoid the drain hole 11a in the draining position, and to avoid a large movement force on the valve element 31, so as to improve the movement reliability of the sealing valve. For this reason, in an embodiment of the present application, the bellows 361 is a bellows, and the bellows is adapted to the movement of the valve core 31 by stretching or folding itself, and does not have a large elastic deformation resistance.

To facilitate the secure connection of the flange 363 to the valve seat 35, in some embodiments, referring to fig. 2, 3, 12 and 13, the drain 3 includes a valve cover 37, referring to fig. 5 and 6, the valve cover 37 is pressed against a side of the flange 363 facing away from the valve seat 35, the flange 363 is sandwiched between the valve cover 37 and an end face of the valve seat 35 on the open side, and a screw is passed through the valve cover 37, the flange 363 and screwed into the valve seat 35 to connect the flange 363 to the valve seat 35.

The drain 3 of the present embodiment can be provided at any suitable location on the inner barrel 11.

In an embodiment, referring to fig. 16 to 19, the laundry device includes a lifting rib 14, a valve core 31, a valve seat 35, a first torsion spring 34, and a first end of a transmission rod 321 disposed in the lifting rib 14, the valve seat 35 is fixedly connected with the lifting rib 14, a second end of the transmission rod 321 passes through the lifting rib 14 and extends to an outer side of one end of the inner cylinder 11 in an axial direction, and a first deflector rod 322 is located at an outer side of one end of the inner cylinder 11 in the axial direction.

In the process of washing clothes by the washing equipment, the lifting ribs 14 carry the clothes to rotate together, and after the clothes are lifted to a certain height, the clothes are dropped into water again under the action of self gravity to generate a stick-beating and drop-dropping effect, so that the washing effect is achieved. On the one hand, the lifting ribs 14 play a protective role on the drainage device 3, and prevent clothes from being entangled on the drainage device 3. On the other hand, the existing structure of the washing equipment is fully utilized, the space inside the lifting ribs 14 is fully utilized, and the capacity of the inner cylinder 11 for washing clothes is not reduced.

In one embodiment, with continued reference to FIG. 7, the valve seat 35 further includes a stop disk 359 disposed outside of the seat body 353, the stop disk 359 surrounding the circumferential surface of the sleeve 357. Specifically, a relief hole is formed in one side of the lifting rib 14, the sleeve 357 is inserted into the relief hole until the stop disc 359 abuts against the inner surface of the lifting rib 14 when the drainage device 3 is assembled with the lifting rib 14. The stopper plate 359 can increase the contact area of the valve seat 35 with the lifter 14, facilitating reliable abutment of the valve seat 35 against the inner surface of the lifter 14.

The specific setting position of the driving mechanism 2 is not limited as long as the driving mechanism 2 can provide an installation position so that the driving mechanism 2 does not follow the rotation of the inner cylinder 11.

In one embodiment, referring to fig. 16 to 19, the driving mechanism 2 is disposed on the outer barrel 12, and the first lever 322 is located between the inner barrel 11 and the outer barrel 12. The driving mechanism 2 includes a second lever 22 and a power unit 21, the power unit 21 drives the second lever 22 to selectively extend or retract toward the lever, and the second lever 22 can selectively dial the first lever 322 to rotate forward or backward around the rotation center line in a state where the second lever 22 is extended.

The movement form of the second lever 22 is not limited, and may be linear movement or rotational movement.

The specific structure of the power unit 21 is not limited, and for example, in one embodiment, the power unit may be a linear motor, and the linear motor drives the second lever 22 to extend or retract along the length direction of the second lever 22. In another embodiment, the power unit 21 may be a rotary motor, and a rotating shaft of the rotary motor is fixedly connected with the second driving lever 22, and the rotary motor drives the second driving lever 22 to rotate forward or backward so as to extend or retract the second driving lever 22.

The drainage principle of the laundry device according to an embodiment of the present application will be described.

Referring to fig. 20, assuming that the inner cylinder 11 rotates clockwise in fig. 20, the second lever 22 extends toward the drain 3, there is a relative movement between the second lever 22 and the inner cylinder 11, and a track of the second lever 22 relative to the inner cylinder 11 is a circle I. The second shift lever 22 contacts the first shift lever 322 from the right side of the first shift lever 322, and as the first shift lever 322 follows the inner barrel 11 to continue transmission, referring to fig. 21, the second shift lever 22 forces the first shift lever 322 to rotate counterclockwise, and the first shift lever 322 drives the transmission lever 321 to rotate counterclockwise synchronously to drive the valve core 31 to move. When the first lever 322 is disengaged from the second lever 22, the first lever 322 is rotated clockwise by the second torsion spring to return to the position shown in fig. 20. Since the position of the valve core 31 has been switched, the lever is then retracted, or the lever is retracted after several turns of the inner cylinder 11.

Even if the second lever 22 is not retracted, when the inner cylinder 11 rotates the next turn, the second lever 22 again dials the first lever 322, and the first lever 322 and the transmission lever 321 idle, without changing the position of the valve core 31. That is, in the case where the position of the valve element 31 has been successfully switched, even if the second shift lever 22 is not retracted, the second shift lever 22 does not lock the first shift lever 322, and therefore, in the subsequent rotation, the second shift lever 22 does not affect the rotation of the inner cylinder 11, the second shift lever 22 does not lock the inner cylinder 11, and the valve element 31 is not erroneously triggered to change the position.

When the inner cylinder 11 is rotated reversely, i.e., in the counterclockwise direction in fig. 20, the second shift lever 22 is extended toward the drain 3, the second shift lever 22 contacts the first shift lever 322 from the left side of the first shift lever 322, the second shift lever 22 forces the first shift lever 322 to rotate clockwise, and the first shift lever 322 drives the transmission lever 321 to rotate clockwise synchronously to drive the valve core 31 to move. When the first shift lever 322 is separated from the second shift lever 22, the first shift lever 322 rotates counterclockwise to reset under the action of the second torsion spring. Since the position of the valve core 31 has been switched, the lever is then retracted, or the lever is retracted after several turns of the inner cylinder 11.

It should be noted that, as long as the first lever 322 rotates by an angle that enables the valve core 31 to bypass the above-mentioned intermediate critical position, after the valve core 31 passes the critical position, the valve core 31 can continue to rotate under the action of the first torsion spring 34 until the valve core 31 moves to the drainage position.

The various embodiments/implementations provided by the application may be combined with one another without contradiction.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (16)

1. A drain device for sealing a drain hole (11 a) in an inner tub (11) of a laundry appliance, comprising:

a valve seat (35), wherein the valve seat (35) is provided with a through hole (35 a) and a guide groove (35 b),

a valve core (31), wherein the valve core (31) comprises a valve column (311) and a guide rib (314), a first end of the valve column (311) is positioned in the valve seat (35), the guide rib (314) protrudes out of the surface of the valve column (311), and the guide rib (314) stretches into the guide groove (35 b) and can slide in the guide groove (35 b);

the transmission rod mechanism (32), the transmission rod mechanism (32) rotationally wears to locate in the through hole (35 a), the transmission rod mechanism (32) include power take off end and power input end, the power take off end is located in the disk seat (35) and with spool (311) drive connection, in order to drive case (31) translation between sealed position and the drainage position of open wash port (11 a) of sealed wash port (11 a), the power input end is located outside disk seat (35).

2. The drain device according to claim 1, wherein the valve core (31) includes a valve plate (312), the valve plate (312) being disposed at the second end of the spool (311) and being located outside the valve seat (35).

3. The drain device according to claim 1, wherein the transmission lever mechanism (32) has a rotation center line, and the movement direction of the valve element (31) is perpendicular to the rotation center line.

4. The drainage device according to claim 1, characterized in that the transmission rod mechanism (32) has a rotation center line, the guide grooves (35 b) are provided in the valve seat (35) on both laterally opposite sides of the rotation center line in a plane projection perpendicular to a movement direction of the valve body (31), and the guide ribs (314) are provided on both laterally opposite sides of the rotation center line in the valve stem (311).

5. The drainage device according to claim 1, characterized in that the valve seat (35) comprises a seat body (353) and a partition wall (354) located in the seat body (353), the through hole (35 a) is provided on the seat body (353), the partition wall (354) is located at a side of the valve stem (311) facing away from the transmission rod mechanism (32), and the valve stem (311) is in sliding contact with the partition wall (354).

6. The drainage device according to claim 5, characterized in that the surface of the spool (311) facing the partition wall (354) is an arc-shaped surface, the shape of the partition wall (354) is adapted to the arc-shaped surface of the spool (311), and the arc-shaped surface of the spool (311) is in sliding contact with the surface of the partition wall (354); and/or, a plurality of ribs (354 a) are arranged on one side of the partition wall (354) facing the valve column (311), the ribs (354 a) extend along the movement direction of the valve column (311), and the partition wall (354) is in sliding contact with the valve column (311) through the ribs (354 a).

7. The drainage device according to claim 6, wherein both ends of the partition wall (354) are connected to the inner wall of the seat body (353), the valve seat (35) further includes a stopper rib (355) protruding from the inner wall of the seat body (353), and the stopper rib (355) is disposed at a distance from the partition wall (354) to form the guide groove (35 b) at a distance therebetween.

8. The drainage device according to claim 1, wherein the surface of the valve column (311) facing the transmission rod mechanism (32) is a plane (311 a), a plurality of ribs (3111) are arranged on the plane (311 a), and the plurality of ribs (3111) jointly define a chute (31 a) on the surface of the valve column (311); the power output end of the transmission rod mechanism (32) extends into the sliding groove (31 a) and can move in the sliding groove (31 a).

9. The drainage device according to claim 5, characterized in that it comprises a first torsion spring (34); the first torsion spring (34) comprises a spiral body (341), a first rotating arm (342) and a second rotating arm (343), the first rotating arm (342) is connected with the valve seat (35), the spiral body (341) is arranged in a suspending mode, and the second rotating arm (343) is connected with the valve column (311) or the transmission rod mechanism (32); the valve core has an intermediate critical position between the sealing position and the draining position, and when the transmission rod mechanism drives the valve core to pass through the intermediate critical position, the first torsion spring can drive the valve core (31) to move continuously to the sealing position or the draining position.

10. The drainage device according to claim 9, characterized in that the second swivel arm (343) is connected to the spool (311), the first torsion spring (34) being arranged at the side of the partition wall (354) facing away from the spool (311); the valve core (31) further comprises a first protruding column (313) protruding out of the surface of the valve column (311), the partition wall (354) is provided with a limiting groove (35 c), the first protruding column (313) penetrates through the limiting groove (35 c), and the first rotating arm (342) is connected with the first protruding column (313).

11. The water drain device according to claim 9, wherein the valve seat (35) comprises a reinforcement wall (356), the reinforcement wall (356) being connected between the partition wall (354) and an inner wall of the seat body (353), the valve seat (35) comprising a first stop structure (351) and a second stop structure (352) protruding from a surface of the reinforcement wall (356), the first stop structure (351) being located on a top side of the second stop structure (352), the second swivel arm (343) being in stop contact with a bottom side of the first stop structure (351) when the valve cartridge (31) is in a sealing position, the second swivel arm (343) being in stop contact with a top side of the second stop structure (352) when the valve cartridge (31) is in a water drain position.

12. The drainage device according to claim 1, wherein the transmission rod mechanism (32) comprises a transmission rod (321), a first deflector rod (322) and a reversing piece (323), the reversing piece (323) is connected between the valve core (31) and the first end of the transmission rod (321), the transmission rod mechanism (32) drives the valve core (31) to translate through the reversing piece (323), the transmission rod (321) is arranged in the through hole (35 a) in a penetrating way, and the first deflector rod (322) is located outside the valve seat (35) and connected to the second end of the transmission rod (321).

13. The drainage device according to claim 12, characterized in that the valve seat (35) comprises a seat body (353) and a sleeve (357) located outside the seat body (353), the sleeve (357) being housed around the through hole (35 a); the transmission rod (321) is rotatably arranged in the sleeve (357) and the through hole (35 a).

14. The drainage device according to claim 13, characterized in that the valve seat (35) comprises a shaft sleeve (358) arranged in the sleeve (357), the shaft sleeve (358) is sleeved on the transmission rod (321), a stop convex part (35 f) is arranged on the inner surface of the sleeve (357) or the inner surface of the through hole (35 a), and the end part of the shaft sleeve (358) facing to one side of the valve core (31) is abutted against the stop convex part (35 f).

15. The drain device according to claim 13, wherein the valve seat (35) further comprises a stop disc (359) located outside the seat body (353), the stop disc (359) encircling the circumferential surface of the sleeve (357).

16. A laundry appliance, comprising:

an inner cylinder (11), wherein the inner cylinder (11) can hold water, and the inner cylinder (11) is provided with a drain hole (11 a);

a driving mechanism (2);

The drainage device according to any one of claims 1 to 15, wherein the drainage device is connected with the inner cylinder (11), and the driving mechanism (2) drives the transmission rod mechanism (32) to rotate so that the transmission rod mechanism (32) drives the valve core (31) to translate relative to the valve seat (35).