A drain valve assembly and a washing device

Abstract

The present application provides a drain valve assembly and a washing device. The drain valve assembly includes a valve core, an elastic member, and a transmission rod mechanism having a rotation center line. The valve core can translate between a sealing position for sealing a drain hole and a draining position for opening the drain hole. The valve core has a locking notch. The elastic member biases the valve core so that the valve core always has a tendency to move towards the drain hole. The transmission rod mechanism has a rotating rod, and the rotating rod is eccentrically arranged with respect to the rotation center line. When the rotating rod rotates into the locking notch, the rotating rod forces the valve core to move from the sealing position to the draining position, and the valve core restricts the rotating rod in the locking notch under the action of the elastic member. When the rotating rod disengages from the locking notch, the elastic member drives the valve core to move from the draining position to the sealing position. In the embodiment of the present application, regardless of the rotation speed of the inner cylinder, as long as the transmission rod mechanism can be rotated, the valve core can be switched between the sealing position and the draining position. The structure is simple, facilitating the drainage of the inner cylinder, and having relatively high reliability.

Description

Technical Field

[0001] It relates to the technical field of clothing washing and care, and particularly relates to a drain valve assembly and a washing device. Background Art

[0002] For a single-tub washing machine, the inner tub is a perforation-free inner tub, which is isolated from the outer tub. The single tub is not only used to hold clothes and beat or stir the clothes, but also used to hold water. However, the drainage and dehydration of the single-tub washing machine have become difficult technical problems to be solved urgently.

[0003] In the related art, a dehydration port and a dehydration valve are provided on the side wall of the inner tub. The dehydration valve is connected to the inner tub through a spring. When the inner tub is dehydrated, the dehydration valve opens the dehydration port under the action of the rotational centrifugal force of the inner tub, and the water in the inner tub can be discharged from the inner tub through the dehydration port; when the inner tub is washing, the dehydration valve closes the dehydration port under the action of the spring.

[0004] In the above solution, the dehydration valve needs to be opened when the inner tub rotates at a high speed. When the washing process in the inner tub ends, there is a large amount of water in the inner tub, and the motor needs to drive the inner tub and the water in the inner tub to rotate at a high speed to achieve drainage. On the one hand, drainage cannot be achieved when the inner tub rotates at a low speed. On the other hand, it will cause the motor to operate overloaded. Summary of the Invention

[0005] In view of this, the embodiments of the present application are expected to provide a drain valve assembly and a washing device that are convenient for drainage.

[0006] The embodiments of the present application provide a drain valve assembly for sealing a drain hole on the inner tub of a washing device, including:

[0007] A valve core, the valve core can translate between a sealing position for sealing the drain hole and a drainage position for opening the drain hole, and the valve core has a locking port;

[0008] An elastic member, the elastic member biases the valve core so that the valve core always has a tendency to move towards the drain hole;

[0009] A transmission rod mechanism having a rotation center line, the transmission rod mechanism has a rotating rod, the rotating rod is eccentrically arranged with respect to the rotation center line. When the rotating rod rotates into the locking port, the rotating rod forces the valve core to move from the sealing position to the drainage position, and the valve core restricts the rotating rod in the locking port under the action of the elastic member; when the rotating rod disengages from the locking port, the elastic member drives the valve core to move from the drainage position to the sealing position.

[0010] In some embodiments, during the process of the rotating rod rotating into the locking opening, the rotating rod can cross the lowest point of its rotation trajectory; when the rotating rod is confined within the locking opening, the elastic member applies a moment to the rotating rod to continue rotating in the direction of entering the locking opening, and the locking opening applies a resisting moment to the rotating rod.

[0011] In some embodiments, when the rotating rod disengages from the locking opening, the rotating rod is spaced apart from the valve core.

[0012] In some embodiments, the transmission rod mechanism includes a transmission rod, a first lever, a reset member, and a rotating sleeve. The rotating sleeve is sleeved on the first end of the transmission rod, the rotating rod is disposed on the rotating sleeve, the first lever is disposed on the second end of the transmission rod, and the first lever is used to receive a driving force to drive the transmission rod to rotate;

[0013] The transmission rod has an initial position. In the initial position, the transmission rod can selectively rotate forward or backward, and the reset member is used to drive the transmission rod to rotate idly and reset to the initial position.

[0014] In some embodiments, along the width direction of the first lever, the outer end surface of the first lever for contacting the drive mechanism of the washing device is an arc surface that is higher in the middle and lower at both sides.

[0015] In some embodiments, the valve core includes a valve plate and a valve column that are fixedly connected. The valve column has a positioning surface on the side facing the transmission rod mechanism and a rib protruding from the positioning surface. The rib includes a first bending section and a second bending section that are connected to each other. The concave side of the first bending section forms the locking opening. When the valve core is in the sealed position, the rotating rod is located within the area defined by the second bending section.

[0016] In some embodiments, the first bending section and the second bending section are located on opposite sides along the rotation direction of the lowest point of the rotation trajectory of the rotating rod.

[0017] In some embodiments, when the valve core is in the drainage position, taking the contact point between the rotation trajectory of the rotating rod and the first bending section as a reference point, the interference amount between the part of the first bending section located on the side of the reference point close to the second bending section and the rotation trajectory of the rotating rod is a first interference amount, and the interference amount between the part of the first bending section located on the side of the reference point far from the second bending section and the rotation trajectory of the rotating rod is a second interference amount. The first interference amount is less than the second interference amount.

[0018] In some embodiments, along the translational direction of the valve core, the first bending section is closer to the drainage hole than the second bending section.

[0019] In some embodiments, the drain valve assembly includes a valve seat and a flexible seal, the valve seat being open toward one side of the drain hole;

[0020] The flexible sealing cover is arranged on the open side of the valve seat, and the flexible sealing and the valve seat jointly enclose a sealing cavity. The end of the valve core facing away from the drain hole, the elastic member, and the rotating rod are all located in the sealing cavity. The valve core is connected to the flexible sealing to drive the flexible sealing to move.

[0021] In some embodiments, the flexible seal includes a supporting cylinder portion and an end cover portion, wherein the first end of the supporting cylinder portion is sealingly covered on the opening of the valve seat, and the end cover portion closes the second end of the supporting cylinder portion, and the valve core is disposed in the sealing cavity and connected to the end cover portion; when the valve core is in the drainage position, the end cover portion is recessed in the supporting cylinder portion.

[0022] In some embodiments, the circumferential outer surface of the support tube is a smooth surface, and when the valve core drives the end cover to move, the support tube does not undergo telescopic deformation.

[0023] In some embodiments, the flexible seal includes a supporting cylinder portion, an end cover portion and a sealing lip, the first end of the supporting cylinder portion is sealingly covered on the opening of the valve seat, the end cover portion closes the second end of the supporting cylinder portion, the valve core is arranged in the sealing cavity and connected to the end cover portion, the sealing lip is arranged on the outer side of the end cover portion away from the sealing cavity, and the end cover portion is provided with an air hole at a position within the surrounding range of the sealing lip, and the air hole is constructed so that water cannot enter the sealing cavity through the air hole.

[0024] The present application provides a washing device, comprising:

[0025] An inner cylinder, the inner cylinder can hold water and has a drainage hole;

[0026] Communication-connected control devices and drive mechanisms;

[0027] The drain valve assembly described in any embodiment of the present application is arranged on the inner cylinder, and the control device controls the driving mechanism to move one end of the transmission rod assembly away from the valve core to drive the transmission rod mechanism to rotate around the rotation center line.

[0028] In some embodiments, the washing device includes an outer barrel and a detection component disposed on the outer barrel, the drain valve component includes a magnet disposed on the valve core, the detection component can detect the current position of the magnet and output position information representing the current position of the valve core, and the control device controls the washing and / or dehydration of the inner barrel according to the position information.

[0029] For the drain valve assembly according to the embodiment of the present application, regardless of the rotation speed of the inner cylinder, as long as the transmission rod mechanism can be rotated, the spool can be switched between the sealing position and the drainage position. The structure is simple, facilitating the drainage of the inner cylinder, with high reliability, and can effectively extend the service life of the drain valve assembly. In addition, the elastic member only needs to be able to drive the spool to move linearly, and the elastic member can adopt a simple cylindrical spring, such as a compression spring. The structure is simple and the reliability is high. Description of the Drawings

[0030] Figure 1 Partial structural schematic diagram of a washing device according to an embodiment of the present application;

[0031] Figure 2 Along Figure 1 Cross-sectional view taken along the A-A direction in

[0032] Figure 3 For Figure 2 Partial enlarged schematic diagram at B in

[0033] Figure 4 For Figure 2 Schematic diagram of the lifting rib and the drain valve assembly in

[0034] Figure 5 Movement schematic diagram of the inner cylinder, the first lever, and the second lever according to an embodiment of the present application, wherein the first lever starts to contact the first lever;

[0035] Figure 6 For Figure 5 Schematic diagram after the inner cylinder in rotates a certain angle clockwise;

[0036] Figure 7 Structural schematic diagram of a drain valve assembly according to an embodiment of the present application;

[0037] Figure 8 For Figure 7 Explosion schematic diagram of the structure shown;

[0038] Figure 9 For Figure 8 Schematic diagram of the valve and the transmission rod mechanism in

[0039] Figure 10 Structural schematic diagram of a spool according to an embodiment of the present application;

[0040] Figure 11 For Figure 7 Schematic diagram of another perspective of the structure shown;

[0041] Figure 12 Along Figure 11 Cross-sectional view taken along the C-C direction in , wherein the spool is in the sealing position;

[0042] Figure 13 for Figure 12 Schematic diagram of the valve core in the drain position;

[0043] Figure 14 For along Figure 12 Cross-sectional view in the middle DD direction;

[0044] Figure 15 for Figure 14 Schematic diagram of the valve core in the drain position;

[0045] Figure 16 This is a schematic diagram of a drain valve assembly according to another embodiment of the present application.

[0046] Description of Reference Numerals

[0047] Inner cylinder 11; outer cylinder 12; lifting ribs 13;

[0048] Driving mechanism 2; power unit 21; second lever 22;

[0049] Drain valve assembly 3;

[0050] Valve core 31; valve column 311; positioning surface 311a; convex rib 3111; first curved section 31111; second curved section 31112; guide rib 3112; valve plate 312; lock port 31a;

[0051] Transmission rod mechanism 32; transmission rod 321; first lever 322; rotating sleeve 323; rotating rod 3231; sleeve connector 324; toggle rod 3241;

[0052] Elastic member 33; reset member 34; rotating arm 341;

[0053] Valve seat 35; avoidance hole 35a; guide groove 35b;

[0054] Flexible seal 36; support cylinder 361; end cover 362; air vent 362a; sealing lip 363;

[0055] Sealed chamber 3a; pressure plate 37; magnet 38 DETAILED DESCRIPTION

[0056] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0057] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0058] An embodiment of the present application provides a washing device. Please refer to Figure 1 and Figure 2 , the washing device includes an inner tub 11, a drain valve assembly 3, a drive mechanism 2, and a control device.

[0059] The drain valve assembly 3 is disposed on the inner tub 11, and the inner tub 11 rotates together with the drain valve assembly 3.

[0060] The inner tub 11 can hold water, and drain holes are formed on the inner tub 11. That is to say, when the washing device is washing clothes, the washing water is contained in the inner tub 11. This inner tub 11 can also be called a non-porous inner tub, which can avoid the problem of being prone to dirt and scale caused by using an outer tub to hold water in the prior art.

[0061] Please refer to Figure 7 , Figure 8 , Figure 9 , Figures 12 to 16 , the drain valve assembly 3 includes a valve core 31, an elastic member 33, and a transmission rod mechanism 32, and the drain valve assembly 3 rotates with the inner tub 11.

[0062] The transmission rod mechanism 32 has a rotation center line. While the transmission rod mechanism 32 rotates around its own rotation center line, it also revolves around the rotation axis of the inner tub 11.

[0063] The valve core 31 is used to seal the drain holes. Specifically, the valve core 31 has a drain position for opening the drain holes (refer to Figure 13 and Figure 15 ) and a sealing position for sealing the drain holes (refer to Figure 12 , Figure 14 and Figure 16 ). The valve core 31 can translate between the sealing position for sealing the drain holes and the drain position for opening the drain holes. That is to say, the valve core 31 will not flip.

[0064] In this embodiment, the spool 31 moves in a translational manner, such that the side of the spool 31 for closing the drain hole always faces the drain hole. When the spool 31 switches from the drain position to the sealed position, the side of the spool 31 for closing the drain hole can stably and reliably directly or indirectly press against the periphery of the drain hole, which can greatly improve the sealing reliability of the drain hole and has a good sealing effect.

[0065] During the washing process or in other situations where drainage is not required, please refer to Figure 7 、 Figure 12 、 Figure 14 、 Figure 16 . The spool 31 is in the sealed position, the spool 31 seals the drain hole, and the water in the inner tub 11 will not be drained. The inner tub 11 functions as a water storage tub. When drainage or dehydration is required, please refer to Figure 13 and Figure 15 . The spool 31 switches from the sealed position to the drain position, the drain hole is opened, and the water in the inner tub 11 is drained out of the inner tub 11 through the drain hole.

[0066] The drain hole can be provided at a suitable position of the inner tub 11 as long as the water in the inner tub 11 can be drained through the drain hole.

[0067] Exemplarily, the drain hole is formed in the circumferential direction of rotation of the inner tub 11, so as to facilitate the inner tub 11 to throw the water out of the drain hole by centrifugal force during the dehydration process.

[0068] It should be noted that the rotation axis of the inner tub 11 can extend in the horizontal direction, can also extend in the vertical direction, or can also extend in an inclined direction between the horizontal direction and the vertical direction, and is not limited herein.

[0069] In an embodiment of the present application, please refer to Figure 1 and Figure 2 . The rotation axis of the inner tub 11 is generally along the horizontal direction. During the rotation of the inner tub 11, the drain hole can cycle through the lowest point of the rotation trajectory of the inner tub 11, and the water in the inner tub 11 can be emptied without dead angles.

[0070] Exemplarily, in one embodiment, please refer to Figure 1 and Figure 2 . The washing device includes an outer tub 12, and the inner tub 11 is rotatably disposed in the outer tub 12. Not only can the outer tub 12 support the inner tub 11, but also the outer tub 12 can drain water. Specifically, the liquid discharged from the drain hole enters the outer tub 12, and the outer tub 12 centrally discharges the liquid out of the washing device.

[0071] Please refer to Figure 12, the elastic member 33 biases the valve core 31 so that the valve core 31 always has a tendency to move towards the drain hole. That is to say, the force exerted by the elastic member 33 on the valve core 31 has at least a component force always towards the drain hole. No matter where the valve core 31 is located within the stroke range, the valve core 31 always has a tendency to move towards the drain hole under the action of the elastic member 33.

[0072] The transmission rod mechanism 32 has a rotation center line, and the transmission rod mechanism 32 rotates around this rotation center line. Please refer to Figure 9 , Figure 14 and Figure 15 , the transmission rod mechanism 32 has a rotating rod 3231, and the rotating rod 3231 is eccentrically arranged with respect to the rotation center line and rotates around the rotation center line. One end of the transmission rod mechanism 32 away from the valve core 31 is used to receive the driving force of the driving mechanism 2.

[0073] Please refer to Figure 10 and Figure 14 , the valve core 31 has a locking port 31a. Please refer to Figure 15 , when the rotating rod 3231 rotates into the locking port 31a, the rotating rod 3231 forces the valve core 31 to move from the sealing position to the drainage position, and the valve core 31 restricts the rotating rod 3231 in the locking port 31a under the action of the elastic member 33. Specifically, since the rotating rod 3231 rotates into the locking port 31a, the rotating rod 3231 prevents the valve core 31 from moving towards the drain hole, and the valve core 31 tightly hooks the rotating rod 3231 under the action of the elastic member 33, so that the rotating rod 3231 is locked in the locking port 31a. Therefore, if there is no driving force to drive the transmission rod mechanism 32 to rotate, the valve core 31 will stably stay in the current position.

[0074] When a driving force acts on the transmission rod mechanism 32 to drive the transmission rod mechanism 32 to rotate in the reverse direction. Please refer to Figure 14 , when the rotating rod 3231 rotates out of the locking port 31a, that is to say, the rotating rod 3231 no longer blocks the valve core 31, the elastic member 33 drives the valve core 31 to move from the drainage position to the sealing position. That is to say, the rotating rod 3231 only drives the valve core 31 to move from the sealing position to the drainage position, but does not drive the valve core 31 to move from the drainage position to the sealing position.

[0075] It should be noted that the control device communicates with the driving mechanism 2; the control device controls the driving mechanism 2 to drive the transmission rod mechanism 32 to rotate around the rotation center line.

[0076] For the drain valve assembly 3 according to the embodiment of the present application, regardless of the rotation speed of the inner cylinder 11, as long as the transmission rod mechanism 32 can be rotated, the spool 31 can be switched between the sealing position and the drainage position. The structure is simple, facilitating the drainage of the inner cylinder 11, with high reliability, and effectively improving the service life of the drain valve assembly 3. In addition, the elastic member 33 only needs to be able to drive the spool 31 to move linearly. The elastic member 33 can adopt a simple cylindrical spring, for example, a compression spring. The structure is simple, with high reliability and easy assembly.

[0077] It should be noted that the washing equipment drains water through the drain hole during the washing process or after the washing is completed, and the washing equipment can also drain water through the drain hole during the dehydration process.

[0078] Exemplarily, please refer to Figure 14 , when the rotating rod 3231 disengages from the locking notch 31a, the rotating rod 3231 is spaced from the spool 31, that is, the rotating rod 3231 does not contact the spool 31, the rotating rod 3231 does not apply a force to the spool 31, and does not apply a resistance to the elastic member 33, so that the elastic member 33 can fully utilize its elastic force to drive the spool 31 to the sealing position and keep it in the sealing position.

[0079] Exemplarily, please refer to Figure 12 , Figure 13 and Figure 16 , the force applied by the elastic member 33 to the spool 31 is always parallel to the movement direction of the spool 31. That is to say, the force applied by the elastic member 33 to the spool 31 always faces the drain hole. The direction of the force applied by the elastic member 33 to the spool 31 will not change due to the change in the position of the spool 31.

[0080] Exemplarily, during the process of the rotating rod 3231 rotating into the locking notch 31a, for example, please refer to Figure 15 , the rotating rod 3231 rotates in the Figure 15 clockwise direction in Figure 16 , and the rotating rod 3231 can cross the lowest point of its rotation trajectory. Specifically, please refer to Figure 15 , when the spool 31 is in the sealing position, the position of the rotating rod 3231 is the first position. Please refer to

[0081] When the rotating rod 3231 is limited in the locking notch 31a, the elastic member 33 applies a torque to the rotating rod 3231 to continue rotating in the direction of entering the locking notch 31a. The torque makes the rotating rod 3231 have a tendency to continue rotating in the Figure 15 clockwise direction in Figure 15in the counterclockwise direction. The moment and the resistance moment are in opposite directions, and the moment is balanced. In this way, the rotating rod 3231 is stably restricted within the locking port 31a.

[0082] The specific structure of the transmission rod mechanism 32 is not limited.

[0083] Exemplarily, please refer to Figure 8 、 Figure 9 、 Figure 12 、 Figure 13 and Figure 16 , the transmission rod mechanism 32 includes a transmission rod 321, a first lever 322, a reset member 34 and a rotating sleeve 323. The rotating sleeve 323 is sleeved on the first end of the transmission rod 321, and the rotating rod 3231 is arranged on the rotating sleeve 323.

[0084] The rotating sleeve 323 drives the rotating rod 3231 to move synchronously. For example, the rotating sleeve 323 and the rotating rod 3231 can be an integrally formed structure. Of course, they can also be a split structure and fixedly connected together.

[0085] The first lever 322 is arranged at the second end of the transmission rod 321. The first lever 322 is used to receive the driving force and drive the transmission rod 321 to rotate. That is to say, the first lever 322 and the transmission rod 321 rotate synchronously, and there is no relative movement between them.

[0086] The connection method between the first lever 322 and the transmission rod 321 is not limited, as long as the two can achieve synchronous movement. For example, it can be integrally formed, snap-connected, screwed, flat key-connected, spline-connected, etc., and is not limited here.

[0087] Exemplarily, the transmission rod 321 has an initial position. In the initial position, the transmission rod 321 can selectively drive the rotating rod 3231 to rotate forward or backward. The reset member 34 is used to drive the transmission rod 321 to rotate idly and reset to the initial position.

[0088] It should be noted that the so-called initial position refers to the stable and balanced position where the transmission rod 321 and the first lever 322 are located when the drain valve assembly 3 is not under external force.

[0089] It should be noted that the so-called idling rotation means that the transmission rod 321 will not drive the rotating sleeve 323 to rotate during the rotation process, that is, the rotating sleeve 323 remains stationary, and the transmission rod 321 rotates relative to the rotating sleeve 323.

[0090] The first lever 322 receives the driving force of the driving mechanism 2 and drives the transmission rod 321 to rotate synchronously. The transmission rod 321 drives the rotating sleeve 323 to rotate, thereby enabling the valve core 31 to switch between the drainage position and the sealing position.

[0091] Specifically, during the rotation of the inner cylinder 11, when the driving mechanism 2 contacts the first lever 322, that is, a driving force is applied to the first lever 322. During the process that the rotating rod 3231 drives the valve core 31 to move from the sealing position to the drainage position, the elastic member 33 is compressed to store potential energy. When the driving mechanism 2 separates from the first lever 322, causing the first lever 322 to lose the driving force, the reset member 34 can drive the transmission rod 321 and the first lever 322 to reset. When the driving mechanism 2 needs to toggle the first lever 322 next time, the driving mechanism 2 will toggle the first lever 322 at the same position, so that the driving cooperation structure between the transmission rod mechanism 32 and the driving mechanism 2 can be simplified.

[0092] The specific setting position of the driving mechanism 2 is not limited, as long as the driving mechanism 2 can be provided with an installation position so that the driving mechanism 2 will not rotate following the inner cylinder 11.

[0093] In one embodiment, please refer to Figure 1 and Figure 2 , the driving mechanism 2 is arranged on the outer tub 12, and the first lever 322 is located between the inner cylinder 11 and the outer tub 12.

[0094] Exemplarily, please refer to Figure 3 , 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 towards the lever. When the second lever 22 is in the extended state, the second lever 22 can selectively toggle the first lever 322 to rotate forward or reverse around the rotation center line.

[0095] The drainage principle of the washing device according to an embodiment of the present application is described below.

[0096] Please refer to Figure 5 , assuming that the inner cylinder 11 rotates in the Figure 5 clockwise direction, the second lever 22 extends towards the drainage valve assembly 3. There is relative movement between the second lever 22 and the inner cylinder 11, and the trajectory of the second lever 22 relative to the inner cylinder 11 is circle Ⅰ. The second lever 22 contacts the first lever 322 from the right side of the first lever 322. Since the first lever 322 continues to drive following the inner cylinder 11, please refer to Figure 6 , the second lever 22 forces the first lever 322 to rotate counterclockwise, and the first lever 322 drives the transmission rod 321 to rotate counterclockwise synchronously to drive the valve core 31 to move. When the first lever 322 and the second lever 22 are separated, the first lever 322 rotates clockwise under the action of the reset member 34 to reset to the position as shown in Figure 5 . Since the position of the valve core 31 has been switched, subsequently, the second lever 22 can be retracted, or the second lever 22 can be retracted after the inner cylinder 11 rotates several circles.

[0097] Even if the second lever 22 is not retracted, when the inner cylinder 11 rotates for the next full turn, the second lever 22 will again toggle the first lever 322. The first lever 322 and the transmission rod 321 will rotate idly and will not change the position of the valve core 31. That is to say, when the position of the valve core 31 has been successfully switched, even if the second lever 22 is not retracted, the second lever 22 will not jam the first lever 322. Therefore, in subsequent rotations, the second lever 22 will not affect the rotation of the inner cylinder 11, the second lever 22 will not cause the inner cylinder 11 to jam, nor will it accidentally trigger the valve core 31 to change its position.

[0098] When the inner cylinder 11 rotates in reverse, that is, rotates counterclockwise along Figure 5 , the second lever 22 extends towards the drain valve assembly 3. The second lever 22 contacts the first lever 322 from the left side of the first lever 322. The second lever 22 forces the first lever 322 to rotate clockwise, and the first lever 322 drives the transmission rod 321 to rotate synchronously clockwise to drive the valve core 31 to move. When the first lever 322 and the second lever 22 disengage, the first lever 322 rotates counterclockwise to reset under the action of the reset member 34. Since the position of the valve core 31 has been switched, subsequently, it is only necessary to retract the second lever 22, or retract the second lever 22 after the inner cylinder 11 rotates several turns.

[0099] It should be noted that as long as the rotation angle of the first lever 322 enables the rotating rod 3231 to be inserted into or removed from the locking port 31a.

[0100] Exemplarily, please refer to Figure 11 , along the width direction of the first lever 322, the outer end face 322a of the first lever 322 for contacting the drive mechanism 2 of the washing device is an arc surface that is higher in the middle and lower on both sides. When the second lever 22 extends, there is a certain probability that it will directly abut against the outer end face 322a. Since the outer end face 322a is an arc surface, the second lever 22 will not be jammed or damaged.

[0101] Exemplarily, in one embodiment, please refer to Figures 7 to 9 、 Figures 12 to 16 , the drain valve assembly 3 includes a valve seat 35. At least a part of the elastic member 33, the rotating rod 3231, and the valve core 31 is disposed within the valve seat 35. The side of the valve seat 35 facing the drain hole is open; the end of the transmission rod mechanism 32 away from the valve core 31 is located outside the valve seat 35, that is, the first lever 322 is located outside the valve seat 35.

[0102] Exemplarily, please refer to Figure 8 and Figure 9The side wall of the valve seat 35 is provided with an avoidance hole 35a, and the transmission rod 321 is passed through the avoidance hole 35a. The valve seat 35 provides installation support for the valve core 31 and the transmission rod mechanism 32, and also protects the valve core 31 and the transmission rod mechanism 32, thereby improving the reliability of the drain valve assembly 3.

[0103] For example, see Figure 8 and Figure 9 The reset member 34 is a torsion spring sleeved on the transmission rod 321. The two rotating arms 341 of the reset member 34 are detachably abutted against the valve seat 35. During the rotation of the transmission rod 321, the transmission rod mechanism 32 can selectively move one of the rotating arms 341 to follow the movement.

[0104] When the transmission rod 321 drives the valve core 31 to move, the transmission rod mechanism 32 will synchronously move one of the rotating arms 341 to store potential energy in the torsion spring. The two rotating arms 341 of the torsion spring balance the reaction force of the valve seat 35 on the torsion spring, so that the transmission rod 321 can be reliably maintained in the initial position.

[0105] Specifically, the valve seat 35 generates a first force on one of the rotating arms 341 and a second force on the other rotating arm 341. The torsion spring maintains a balance under the action of the first force and the second force to maintain the initial position. In this embodiment, since there is a pre-tightening force at the initial position, during the resetting process of the transmission rod 321, even if the transmission rod 321 moves to a position close to the initial position, the torsion spring can have a large restoring force to reliably restore the transmission rod 321 to the initial position without causing the transmission rod 321 to swing near the initial position or be unable to return to the initial position, thereby improving the resetting reliability of the transmission rod 321 and the first lever 322.

[0106] In one embodiment, any one of the rotating arms 341 moves in the direction of tightening the torsion spring under the toggle of the transmission rod mechanism 32. In this way, the rotating arm 341 always moves in the direction of tightening the torsion spring. On the one hand, the torsion spring is not easy to fail, and on the other hand, the torsion spring can also have a larger resilience.

[0107] It should be noted that the movement in the direction of tightening the torsion spring means that the movement direction of the rotating arm 341 is consistent with the spiral direction of the torsion spring, and the movement of the rotating arm 341 will reduce the pitch of the torsion spring.

[0108] The transmission rod mechanism 32 may have any suitable structure to selectively move the two rotating arms 341. Figure 9 The transmission rod mechanism 32 includes a toggle rod 3241 , which moves synchronously with the transmission rod 321 . The toggle rod 3241 is located between the two rotating arms 341 to selectively toggle any one of the rotating arms 341 .

[0109] The abutment form of the two rotating arms 341 and the valve seat 35 is not limited. For example, the bottom surface of the valve seat 35 is provided with a ridge, and the ridge extends along the length direction of the transmission rod 321. When the transmission rod 321 is in the initial position, in the plane projection perpendicular to the rotation center line, the two rotating arms 341 cross and abut on the opposite sides of the ridge, and the toggle rod 3241 is located between the ridge and the intersection of the two rotating arms 341. In this way, when the toggle rod 3241 toggles one of the rotating arms 341 in any direction, the rotating arm 341 can move in the direction of tightening the reset member 34, and the other rotating arm 341 can also reliably abut on the other side of the ridge.

[0110] It should be noted that the connection method between the transmission rod 321 and the toggle rod 3241 is not limited, as long as synchronous rotation can be achieved. In some embodiments, the toggle rod 3241 can be fixedly connected to the transmission rod 321, for example, integrally formed, screwed, or clamped. In other embodiments, the toggle rod 3241 can move axially relative to the transmission rod 321.

[0111] For example, in some other embodiments, please refer to Figure 9 The transmission rod mechanism 32 includes a sleeve 324, which is sleeved on the transmission rod 321 and rotates synchronously with the transmission rod 321, and a toggle rod 3241 is arranged on the sleeve 324. The sleeve 324 and the transmission rod 321 can be transmitted by a flat key, a spline, etc., or a non-circular circumferential profile can be used to achieve torque transmission. In this embodiment, during assembly, the transmission rod 321 can be passed through the side wall of the valve seat 35, and then the sleeve 324 can be directly sleeved on the transmission rod 321, without the need for fasteners such as screws to fix, and it is convenient to disassemble and assemble.

[0112] Exemplarily, the rotating sleeve 323 is provided with a first driving groove, and the first driving groove has first driving surfaces on both sides opposite to each other along the rotation direction. The first end of the transmission rod 321 is at least partially located in the first driving groove and can slide in the first driving groove. The first end of the transmission rod 321 can selectively cooperate with one of the first driving surfaces to drive the rotating sleeve 323 to rotate around the rotation center line.

[0113] It should be noted that the rotation direction of the transmission rod mechanism 32 is related to the rotation direction of the inner tube 11. For example, when the inner tube 11 is rotated along Figure 5 When the drive mechanism 2 moves the first lever 322 in the clockwise direction, the first lever 322 will only drive the transmission rod mechanism 32 to rotate along the rotation center line. Figure 5 When the inner cylinder 11 rotates counterclockwise. Figure 5 When the driving mechanism 2 moves the first lever 322, the first lever 322 will only drive the transmission rod mechanism 32 to rotate along the rotation center line. Figure 5 Rotate clockwise in.

[0114] When the washing device is in the washing process and the valve core 31 is in the sealed position, the first end of the transmission rod 321 contacts one of the first driving surfaces. At this time, the inner cylinder 11 continues to rotate forward. If the driving mechanism 2 malfunctions and toggles the first lever 322, then the first lever 322 will drive the transmission rod mechanism 32 to rotate along Figure 5 the clockwise direction. The first end of the transmission rod 321 idles in the first driving groove, that is, the first lever 322 and the transmission rod 321 produce an idle stroke. At this time, the transmission rod mechanism 32 does not drive the valve core 31 to move, and the valve core 31 can still remain in the current sealed position, so that the reliability of the washing device can be improved.

[0115] When the valve core 31 is in the drainage position and the rotation direction of the inner cylinder 11 remains unchanged, if the driving mechanism 2 malfunctions and toggles the first lever 322, then the first lever 322 will drive the transmission rod mechanism 32 to rotate along Figure 5 the counterclockwise direction. The first end of the transmission rod 321 idles in the first driving groove, that is, the first lever 322 and the transmission rod 321 produce an idle stroke. The transmission rod mechanism 32 does not drive the valve core 31 to move, and the valve core 31 can still remain in the current drainage position. After idling, the transmission rod 321 will still return to the initial position under the action of the reset member 34, so that the reliability of the washing device can be improved.

[0116] Exemplarily, please refer to Figure 10 , the valve core 31 includes a valve plate 312 and a valve column 311 which are fixedly connected. The valve plate 312 is arranged at the top of the valve column 311. The valve core 31 plugs the drain hole through the valve plate 312, and the rotating rod 3231 is in driving cooperation with the valve column 311.

[0117] Exemplarily, please continue to refer to Figure 10 , the valve column 311 has a positioning surface 311a on the side facing the transmission rod mechanism 32 and a rib 3111 protruding from the positioning surface 311a. The rib 3111 includes a first bending section 31111 and a second bending section 31112 which are connected to each other. The concave side of the first bending section 31111 forms a locking notch 31a. Please refer to Figure 15 , when the valve core 31 is in the drainage position, the rotating rod 3231 is located in the area defined by the first bending section 31111. Please refer to Figure 14 , when the valve core 31 is in the sealed position, the rotating rod 3231 is located in the area defined by the second bending section 31112. In this embodiment, the driving cooperation between the valve core 31 and the transmission rod mechanism 32 is realized by the cooperation of the rib 3111 and the rotating rod 3231, and the structure is simple.

[0118] Exemplarily, please refer to Figure 15, when the valve core 31 is in the drainage position, the first bent section 31111 and the second bent section 31112 are located on opposite sides of the lowest point of the rotation trajectory of the rotating rod 3231. The rotation trajectory of the rotating rod 3231 is a circle centered on the rotation center line. Figure 15 The dotted circle in

[0119] schematically shows the rotation trajectory of the rotating rod 3231. The rotating rod 3231 requires a relatively large force to cross the lowest point. Therefore, regardless of whether the rotating rod 3231 is at the position of the first bent section 31111 or the second bent section 31112, without a relatively large external force, the rotating rod 3231 will not cross the lowest point of the rotation trajectory. In this way, the rotating rod 3231 can be reliably held in the sealing position or the drainage position.

[0120] Exemplarily, when the valve core 31 is in the drainage position, taking the contact point between the rotation trajectory of the rotating rod 3231 and the first bent section 31111 as a reference point, the interference amount between the part of the first bent section 31111 located on the side close to the second bent section 31112 of the reference point and the rotation trajectory of the rotating rod 3231 is the first interference amount, and the interference amount between the part of the first bent section 31111 located on the side far from the second bent section 31112 of the reference point and the rotation trajectory of the rotating rod 3231 is the second interference amount, and the first interference amount is less than the second interference amount. Among them, the interference amount refers to the radial length of the rib 3111 extending into the rotation trajectory.

[0121] Exemplarily, please refer to Figure 15 and Figure 16 , along the translation direction of the valve core 31, the first bent section 31111 is closer to the drain hole than the second bent section 31112. That is to say, the first bent section 31111 is higher than the second bent section 31112. In this embodiment, with the same translation stroke required for the valve core 31, the requirement for the rotation stroke of the rotating rod 3231 is lower. That is to say, the rotating rod 3231 only needs to rotate a smaller stroke to enable the valve core 31 to obtain a larger translation stroke. The rotating space required for the rotating rod 3231 is smaller, which saves more space and makes the structure of the drain valve assembly simpler and more compact.

[0122] In one embodiment, please refer to Figure Figure 9 and Figure 10 , one of the valve seat 35 and the valve core 31 is provided with a guide groove 35b, and the other is provided with a guide rib 3112, and the guide rib 3112 is slidably engaged with the guide groove 35b. In this way, the reliability of the translation of the valve core 31 can be improved, and the deviation of the valve core 31 can be avoided.

[0123] In one embodiment, please refer to Figure 7 , Figure 8 , Figures 11 to 16 , the drain valve assembly 3 includes a flexible seal 36. The flexible seal 36 covers the open side of the valve seat 35. The flexible seal 36 and the valve seat 35 jointly enclose a sealed cavity 3a. The valve core 31, the elastic member 33, and the rotating rod 3231 are all located in the sealed cavity 3a. The valve core 31 is connected to the flexible seal 36 to drive the flexible seal 36 to move.

[0124] Since the valve core 31, the elastic member 33, the rotating rod 3231, etc. are all arranged in the sealed cavity 3a, they will not contact the washing water. On the one hand, the lint in the washing water will not enter the sealed cavity 3a, avoiding impurities such as lint from clogging or winding around the rotating rod and the valve core 31, ensuring the normal movement of the drain valve, and improving the working reliability and service life of the sealed valve assembly. On the other hand, when the transmission rod mechanism 32 or the valve core 31 is made of a metal material, it can also avoid the corrosion of the washing water on the metal material.

[0125] It should be noted that the flexible seal 36 can be an integrally formed structure to improve the structural reliability of the flexible seal 36. The material of the flexible seal 36 is not limited. For example, it includes but is not limited to: silicone, rubber, etc.

[0126] Exemplarily, please refer to Figure 7 , Figures 12 to 16 , the flexible seal 36 includes a support cylinder portion 361 and an end cover portion 362. The first end of the support cylinder portion 361 is hermetically covered at the open place of the valve seat 35. The end cover portion 362 closes the second end of the support cylinder portion 361. The valve core 31 is arranged in the sealed cavity 3a and is connected to the end cover portion 362.

[0127] In some embodiments, please refer to Figure 16 , the support cylinder portion 361 is in a corrugated shape. The telescopic folding of the support cylinder portion 361 is used to adapt to the movement of the valve core 31.

[0128] In some other embodiments, please refer to Figure 13 and Figure 15 , when the valve core 31 is in the drainage position, the end cover portion 362 is recessed into the support cylinder portion 361. In this embodiment, the flexible seal 36 follows the movement of the valve core 31 by the recessing and rebounding of the end cover portion 362, avoiding wrinkles in the support cylinder portion 361, avoiding the support cylinder portion 361 from clamping impurities such as lint, and reducing the probability of bacteria breeding caused by wrinkles or affecting the reliability of the drain valve assembly 3.

[0129] Exemplarily, please refer to Figure 7 , Figure 12 and Figure 14The outer circumferential surface of the support cylinder 361 is a smooth surface, and the support cylinder 361 does not undergo telescopic deformation when the valve core 31 drives the end cover 362 to move. In this way, impurities such as lint mixed in the washing water are not easily accumulated on the flexible seal 36.

[0130] For example, see Figure 7 , Figures 12 to 16 The flexible seal 36 includes a sealing lip 363, which is arranged on the outer side of the end cover 362 away from the sealing cavity 3a. When the valve core 31 is in the sealing position, the valve core 31 seals the sealing lip 363 against the periphery of the drain hole. The sealing lip 363 can reliably seal and contact with the inner cylinder 11, reducing the precision requirement for the valve plate 312.

[0131] For example, see Figure 12 and Figure 16 The end cover 362 is provided with an air hole 362a penetrating the end cover 362 at a position within the range surrounded by the sealing lip 363. The air hole 362a is configured such that water cannot enter the sealing cavity 3a through the air hole 362a. When the valve core 31 moves from the sealing position to the drain position, the volume of the sealing cavity 3a decreases. Therefore, the air in the sealing cavity 3a is compressed, and the excess air is discharged through the air hole 362a, thereby reducing the air pressure resistance.

[0132] For example, the aperture of the air vent 362a is no more than 0.8 mm. Thus, the air vent 362a can allow air to pass through, and water cannot pass through the air vent 362a due to surface tension.

[0133] It is understandable that the function of the air hole 362a allowing only air flow but not water flow to pass through can also be achieved by setting a one-way valve or the like.

[0134] The specific connection method between the flexible sealing member 36 and the valve seat 35 is not limited.

[0135] For example, see Figures 7 to 16 The drain valve assembly 3 includes a pressing plate 37, which presses the bottom edge of the supporting cylinder 361 onto the valve seat 35, and then fastens the connection by means of fasteners such as screws and bolts.

[0136] The installation position of the drain valve assembly 3 is not limited.

[0137] In one embodiment, please refer to Figures 2 to 4, the washing device includes lifting ribs 13. The valve core 31, the elastic positioning member, and the elastic reset member 34 are all arranged inside the lifting ribs 13. The first end of the transmission rod 321 is located inside the lifting ribs 13, the second end of the transmission rod 321 extends to the outside of one axial end of the inner cylinder 11, and the first shift lever 322 is located outside one axial end of the inner cylinder 11. It should be noted that in the embodiment where the drain valve assembly 3 includes a valve seat 35, the valve seat 35 is also arranged inside the lifting ribs 13, and the valve seat 35 is fixedly connected to the lifting ribs 13.

[0138] During the process of the washing device washing clothes, the lifting ribs 13 drive the clothes to rotate together. After the clothes are lifted to a certain height, they fall back into the water under the action of their own gravity, generating the effects of beating and tumbling, so as to achieve the washing effect. On the one hand, the lifting ribs 13 play a protective role for the drain valve assembly 3 to prevent the clothes from being wound around the drain valve assembly 3. On the other hand, the existing structure of the washing device is fully utilized, and the space inside the lifting ribs 13 is fully utilized, without reducing the capacity of the inner cylinder 11 to wash clothes.

[0139] Exemplarily, the washing device includes a detection component arranged on the outer tub 12, please refer to Figure 8 , Figure 12 and Figure 13 , the drain valve assembly 3 includes a magnet 38 arranged on the valve core 31. For example, the magnet 38 is embedded in the valve plate 31. The detection component can detect the current position of the magnet 38. The detection component and the magnet 38 are non-contact detection and induction, avoiding physical connections such as wiring being arranged between the detection component and the magnet 38, thus avoiding the rotation of the inner cylinder 11.

[0140] The detection component can output position information characterizing the current position of the valve core 31, and the control device controls the washing and / or dehydration of the inner cylinder 11 according to the position information.

[0141] The detection component detects the magnetic field intensity of the magnet 38 to obtain the current position of the valve core 31. The magnet 38 forms a stable magnetic field. During the switching process between the sealing position and the drainage position of the valve core 31, the distance between the magnet 38 and the detection component will change. When the valve core 31 is in the sealing position or the drainage position, the distance between the magnet 38 and the detection component is different, and the magnetic field intensity detected by the detection component is different. Based on this, the position of the magnet 38 is known, so as to obtain the current position of the valve core 31.

[0142] The control device confirms the position of the valve core 31 according to the position information, so as to confirm whether the drain hole is sealed or opened, so as to accurately control the inner cylinder 11 to perform the washing operation or the dehydration operation, ensuring that when the inner cylinder 11 performs the dehydration operation, the drain valve assembly is in the drainage position, and when the inner cylinder 11 performs the washing operation, the drain valve assembly is in the sealing position, avoiding the improper position of the drain valve assembly affecting the washing and dehydration of the inner cylinder 11.

[0143] In one embodiment, the detection component is arranged on the circular trajectory that the drain hole sweeps across on the outer tub 12. That is, the rotation trajectory formed by the rotation of the drain hole with the inner tub 11 projects onto the outer tub 12 to form a circular trajectory. In other words, the rotation trajectory formed by the rotation of the drain hole with the inner tub 11 and the circular trajectory are concentric circles. The detection component is arranged on the circular trajectory. In this way, during the rotation of the inner tub 11, the drain valve assembly 3 will inevitably align with the detection component at a certain position, so as to ensure that the detection component can detect the current position of the drain valve assembly 3. That is to say, at the beginning of washing or dehydration, the inner tub 11 is in a low-speed rotation state. The drain valve assembly 3 rotates at a low speed with the inner tub 11. During the rotation of the drain valve assembly 3, it will inevitably align with the detection component at a certain position, so that the detection component can detect the current position of the drain valve assembly 3.

[0144] In the description of the present application, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic expression of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine the different embodiments or examples described in the present application and the features of different embodiments or examples.

[0145] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A drain valve assembly for sealing a drain hole on the inner tub (11) of a washing device, characterized in that, Comprising: A valve core (31), the valve core (31) being capable of translating between a sealing position for sealing a drain hole and a draining position for opening the drain hole, the valve core (31) having a locking notch (31a); An elastic member (33), the elastic member (33) biasing the valve core (31) so that the valve core (31) always has a tendency to move towards the drain hole; A transmission rod mechanism (32) having a rotation center line, the transmission rod mechanism (32) having a rotating rod (3231), the rotating rod (3231) being eccentrically arranged with respect to the rotation center line. When the rotating rod (3231) rotates into the locking notch (31a), the rotating rod (3231) forces the valve core (31) to move from the sealing position to the draining position, and the valve core (31) restricts the rotating rod (3231) in the locking notch (31a) under the action of the elastic member (33); when the rotating rod (3231) disengages from the locking notch (31a), the elastic member (33) drives the valve core (31) to move from the draining position to the sealing position; The valve core (31) includes a valve plate (312) and a valve post (311) fixedly connected thereto. The valve post (311) has a positioning surface (311a) on a side facing the transmission rod mechanism (32) and a rib (3111) protruding from the positioning surface (311a). The rib (3111) includes a first bent section (31111) and a second bent section (31112) that are connected to each other. The concave side of the first bent section (31111) forms the locking notch (31a). When the valve core (31) is in the sealing position, the rotating rod (3231) is located within the area defined by the second bent section (31112).

2. The drain valve assembly according to claim 1, characterized in that During the process of the rotating rod (3231) rotating into the locking notch (31a), the rotating rod (3231) can cross the lowest point of its rotation trajectory; when the rotating rod (3231) is restricted in the locking notch (31a), the elastic member (33) applies a moment to the rotating rod (3231) to continue rotating in the direction of entering the locking notch (31a), and the locking notch (31a) applies a resistance moment to the rotating rod (3231).

3. The drain valve assembly according to claim 1, characterized in that, When the rotating rod (3231) disengages from the locking notch (31a), the rotating rod (3231) is spaced apart from the valve core (31).

4. The drain valve assembly according to claim 1, characterized in that The transmission rod mechanism (32) includes a transmission rod (321), a first shift lever (322), a reset member (34), and a rotating sleeve (323). The rotating sleeve (323) is sleeved on the first end of the transmission rod (321). The rotating rod (3231) is provided on the rotating sleeve (323). The first shift lever (322) is provided on the second end of the transmission rod (321). The first shift lever (322) is used to receive a driving force to drive the transmission rod (321) to rotate; The transmission rod (321) has an initial position. In the initial position, the transmission rod (321) can be selectively rotated forward or backward, and the reset member (34) is used to drive the transmission rod (321) to rotate idly and reset to the initial position.

5. The drain valve assembly according to claim 4, characterized in that, Along the width direction of the first shift lever (322), the outer end surface of the first shift lever (322) for contacting the drive mechanism (2) of the washing device is an arc surface that is high in the middle and low on both sides.

6. The drain valve assembly according to claim 1, wherein The first bending section (31111) and the second bending section (31112) are located on opposite sides along the rotation direction of the lowest point of the rotation trajectory of the rotating rod (3231).

7. The drain valve assembly according to claim 1, wherein, When the valve core (31) is in the drainage position, taking the contact point between the rotation trajectory of the rotating rod (3231) and the first bending section (31111) as a reference point, the interference amount between the part of the first bending section (31111) located on the side closer to the second bending section (31112) of the reference point and the rotation trajectory of the rotating rod (3231) is the first interference amount, and the interference amount between the part of the first bending section (31111) located on the side away from the second bending section (31112) of the reference point and the rotation trajectory of the rotating rod (3231) is the second interference amount. The first interference amount is less than the second interference amount.

8. The drain valve assembly according to claim 1, wherein, Along the translational direction of the valve core (31), the first bending section (31111) is closer to the drain hole than the second bending section (31112).

9. The drain valve assembly according to claim 1, characterized in that The drain valve assembly includes a valve seat (35) and a flexible seal (36). The side of the valve seat (35) facing the drain hole is open. The flexible seal (36) covers the open side of the valve seat (35). The flexible seal (36) and the valve seat (35) together enclose a sealing cavity (3a). One end of the valve core (31) facing away from the drain hole, the elastic member (33), and the rotating rod (3231) are all located in the sealing cavity (3a). The valve core (31) is connected to the flexible seal (36) to drive the flexible seal (36) to move.

10. The drain valve assembly according to claim 9, wherein, The flexible seal (36) includes a support cylinder portion (361) and an end cover portion (362). The first end of the support cylinder portion (361) is hermetically covered at the open part of the valve seat (35), and the end cover portion (362) closes the second end of the support cylinder portion (361). The valve core (31) is arranged in the sealing cavity (3a) and is connected to the end cover portion (362). When the valve core (31) is in the drainage position, the end cover portion (362) is recessed into the support cylinder portion (361).

11. The drain valve assembly according to claim 10, characterized in that, The circumferential outer surface of the support cylinder portion (361) is a smooth surface. During the movement of the valve core (31) driving the end cover portion (362), the support cylinder portion (361) does not undergo telescopic deformation.

12. The drain valve assembly according to claim 9, wherein, The flexible seal (36) includes a support cylinder portion (361), an end cover portion (362), and a sealing lip (363). The first end of the support cylinder portion (361) is hermetically sleeved on the open portion of the valve seat (35). The end cover portion (362) closes the second end of the support cylinder portion (361). The valve core (31) is disposed in the sealing cavity (3a) and connected to the end cover portion (362). The sealing lip (363) is disposed on the outer side of the end cover portion (362) facing away from the sealing cavity (3a). The portion of the end cover portion (362) within the range surrounded by the sealing lip (363) is provided with a vent hole (362a). The vent hole (362a) is configured such that water flow cannot enter the sealing cavity (3a) through the vent hole (362a).

13. A washing device, characterized in that, Comprising: an inner cylinder (11) capable of holding water, the inner cylinder (11) having a drain hole; a control device and a drive mechanism (2) in communication connection; and the drain valve assembly according to any one of claims 1-12, the drain valve assembly being disposed on the inner cylinder (11), and the control device controlling the drive mechanism (2) to toggle one end of the transmission rod mechanism (32) away from the valve core (31) to drive the transmission rod mechanism (32) to rotate about the rotation center line.

14. The washing device according to claim 13, characterized in that, The washing device includes an outer tub (12) and a detection assembly disposed on the outer tub (12). The drain valve assembly includes a magnet (38) disposed on the valve core (31). The detection assembly can detect the current position of the magnet (38) and output position information representing the current position of the valve core (31). The control device controls the washing and / or dehydration of the inner cylinder (11) according to the position information.

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