CN114763655A - Washing machine drain valve assembly and washing machine - Google Patents

Abstract

The invention discloses a washing machine drain valve component and a washing machine, wherein the drain valve component comprises a valve plug arranged at the bottom of an inner barrel and a driving component for controlling the opening and closing of the valve plug, the driving component comprises a centrifugal hammer capable of swinging upwards or downwards under the action of centrifugal force, the centrifugal hammer and the valve plug are connected through a lever structure, and the lever structure is provided with a lever fulcrum capable of being rotatably supported and fixed at the bottom of the inner barrel; the gravity center and the lever fulcrum of the centrifugal hammer are not on the same horizontal plane, the centrifugal hammer swings towards the direction close to the horizontal plane where the lever fulcrum is located under the action of centrifugal force, and the valve plug moves downwards or upwards around the lever fulcrum along with the swinging of the centrifugal hammer to realize opening and closing. According to the invention, through the design of different heights of the gravity center of the centrifugal hammer and the lever fulcrum, the centrifugal hammer can swing towards the direction close to the horizontal plane where the lever fulcrum is located under the action of centrifugal force and the restriction of the lever structure, so that the valve plug is driven to move upwards or downwards for drainage, the structure is simple, and the drainage efficiency is high.

Description

Washing machine drain valve assembly and washing machine

Technical Field

The invention belongs to the field of clothes treatment equipment, and particularly relates to a drainage valve assembly of a washing machine and the washing machine.

Background

Most of the prior washing machines in the prior art include an outer tub and an inner tub disposed inside the outer tub, and a plurality of dewatering holes are formed in a tub wall of the inner tub to communicate the inner tub and the outer tub with each other. When the washing machine works, the outer barrel is used for containing washing water, the inner barrel is used for containing clothes to be washed, the washing water can exist between the inner barrel and the outer barrel, but the washing water cannot be utilized, and the waste of the washing water is caused. Moreover, as the operation time of the washing machine increases, dirt and lint contained in the washing water are retained in a space between the inner tub and the outer tub, and are difficult to clean, resulting in generation of bacteria and bad smell throughout the year. In order to solve the problem, the prior art provides a washing machine without dewatering holes on an inner barrel, so that the inner barrel can independently contain washing water in the washing process, and meanwhile, the drainage of the inner barrel without holes cannot be realized by the existing drainage mode.

Chinese patent application No. 201610767640.4 discloses a washing machine without water between an inner tub and an outer tub, comprising: an outer tub; the inner barrel is rotatably arranged in the outer barrel; during washing/rinsing, the centrifugal block is static relative to the inner barrel, the plug body is kept in a communication pipeline between the water inlet end and the water outlet end to keep the drain hole closed, and during dewatering, the centrifugal block moves under the action of centrifugal force to drive the plug body to move out of the communication pipeline between the water inlet end and the water outlet end to open the drain hole.

Although the washing machine disclosed in the above application solves the problem of water drainage of the non-porous inner barrel washing machine to a certain extent, the centrifugal block and the valve plug are connected through a flexible pull rope, and the centrifugal block moves outwards along the circumferential direction under the action of centrifugal force to drive the valve plug to move in the same direction to open the water drainage hole. Because interior bucket drain hole is seted up on interior bucket bottom wall, the valve plug can not directly be installed in drain hole department and realize the switching, if directly installed need provide the effort that follows interior bucket central axis's direction on the drain hole and could open the valve plug.

Therefore, the water outlet of the inner barrel is externally connected with a sealing valve, the sealing valve comprises a water inlet pipe, a water outlet pipe and a valve pipe, the water inlet end of the sealing valve is connected with the water outlet of the inner barrel, and the valve plug is arranged in the valve pipe in a telescopic and movable mode, so that the water outlet hole can be opened for water drainage. Because the motion direction of the centrifugal block and the axial direction of the water outlet of the inner barrel are not in the same direction, the reversing is realized through a reversing communication pipeline, the structure is complex, in the long-term use process, a large amount of thread scraps and impurities can be accumulated in the communication pipeline of the sealing valve, the cleaning effect of the washing machine is influenced, the valve body is blocked for a long time, the normal drainage cannot be realized, and the drainage efficiency is low.

The present invention has been made in view of this point.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a drainage valve assembly of a washing machine, wherein the gravity center of a centrifugal hammer and the lever fulcrum are designed to have different heights, so that the centrifugal hammer can swing downwards or upwards towards the direction close to the horizontal plane where the lever fulcrum is located under the action of centrifugal force and the restriction of the lever structure, and a valve plug is driven to move upwards or downwards around the lever fulcrum to drain water. Under the effect of centrifugal force, centrifugal hammer can provide the effort that is on a parallel with interior barrel central axis direction to the valve plug, makes the valve plug of drainage valve subassembly can direct mount in drain department, and the structure is simpler, and the difficult phenomenon that appears the drainage jam, and drainage efficiency is higher.

In order to solve the technical problems, the invention adopts the technical scheme that:

a washing machine drain valve assembly comprises a valve plug arranged at the bottom of a washing machine and a driving component for controlling the valve plug to open and close, wherein the driving component comprises a centrifugal hammer capable of swinging upwards or downwards under the action of centrifugal force, the centrifugal hammer is connected with the valve plug through a lever structure, and the lever structure is provided with a lever fulcrum capable of rotatably supporting and fixing the inner bottom of the washing machine;

The gravity center of the centrifugal hammer and the lever fulcrum are not on the same horizontal plane, the centrifugal hammer swings towards the direction close to the horizontal plane where the lever fulcrum is located under the action of centrifugal force, and the valve plug moves downwards or upwards around the lever fulcrum along with the swing of the centrifugal hammer to achieve opening and closing.

Furthermore, the lever structure comprises a swinging rod of which the power end is connected to the centrifugal hammer and the resistance end is connected to the valve plug, and a connecting line of the gravity center of the centrifugal hammer and the lever fulcrum and a horizontal plane where the lever fulcrum is located form a certain inclined included angle;

the valve plug is arranged on the inner side of the bottom of the inner barrel in a sealing mode, the gravity center of the centrifugal hammer is higher than that of a lever fulcrum, the centrifugal hammer swings downwards under the action of centrifugal force, and the resistance end of the swing rod drives the valve plug to move upwards around the lever fulcrum to open the valve plug;

or, the barrel head outside including the sealed setting of valve plug, the focus of centrifugal hammer is less than the lever fulcrum setting, the centrifugal hammer upwards swings under the centrifugal force effect, the resistance end drive valve stopper of swinging arms is round lever fulcrum downstream opens the valve plug.

Further, centrifugal hammer and valve plug are connected respectively at lever structure's both ends, the lever fulcrum is located lever structure's middle part position, lever structure is including being located the power arm between centrifugal hammer and the lever fulcrum and being located the resistance arm between valve plug and the lever fulcrum, the projection of focus on lever structure is located on the power arm.

Further, a first elastic reset piece is arranged at the fulcrum of the lever and used for providing upward or downward torsional force for overcoming the gravity of the centrifugal hammer to the resistance end of the swinging rod so as to enable the valve plug to keep a closed state in an initial state;

preferably, the drain valve assembly further comprises a fulcrum rotating shaft in rotating fit with the swinging rod, and the first elastic resetting piece is a torsion spring arranged on the fulcrum rotating shaft.

Furthermore, the valve plug comprises a sealing cover and a supporting rod, the drain valve assembly further comprises a mounting seat fixed at the bottom of the inner barrel, the mounting seat is provided with a hollow slideway, one end of the supporting rod is fixedly connected with the sealing cover, and the other end of the supporting rod is slidably arranged in the hollow slideway and movably connected with the swinging rod;

a second elastic resetting piece is arranged between the sealing cover and the mounting seat and used for providing tensile force for overcoming the gravity of a centrifugal hammer to the valve plug so that the valve plug is kept in a closed state in an initial state;

preferably, the second elasticity piece that resets is the extension spring or the pressure spring of cover establishing outside the bracing piece, extension spring or pressure spring one end is connected under the sealed lid, the other end is connected on the mount pad.

Furthermore, the drain valve assembly also comprises a linkage piece which is rotatably connected between the valve plug and the swing rod, one end of the linkage piece is hinged with the valve plug, and the other end of the linkage piece is hinged with the swing rod;

the centrifugal hammer swings upwards or downwards under the action of centrifugal force, the resistance end of the swing rod swings downwards or upwards around the lever fulcrum, and the linkage piece drives the valve plug to move;

preferably, the linkage piece is a linkage rod, a connecting portion is arranged at a resistance end of the swinging rod connected with the linkage rod, a first pin hole is formed in the connecting portion, a second pin hole is formed at one end of the linkage rod connected with the swinging rod, and a connecting pin is rotatably inserted into the first pin hole and the second pin hole to connect the swinging rod with the linkage rod.

The invention also provides a washing machine, which comprises an inner barrel, wherein a water outlet is formed in the bottom of the inner barrel, and any one of the washing machine water outlet valve assemblies is arranged at the water outlet;

in the washing or rinsing process, the valve plug of the drainage valve component plugs the water outlet so that the inner barrel can independently contain water in the washing or rinsing process;

in the dehydration process, the centrifugal hammer swings towards the direction close to the horizontal plane where the lever fulcrum is located under the action of centrifugal force and the restriction of the lever structure, so that the valve plug moves upwards or downwards around the lever fulcrum to open the water outlet.

Furthermore, the valve plug is positioned in the inner barrel and is sealed above the water outlet, and the gravity center of the centrifugal hammer is higher than the lever fulcrum of the swing rod;

in the washing or rinsing process, the valve plug is tightly covered on the water outlet under the action of the downward twisting force of the first elastic resetting piece and/or the pulling force of the second elastic resetting piece, so that the inner barrel can independently contain water in the washing or rinsing process;

in the dewatering process, the centrifugal hammer overcomes the downward twisting force of the first elastic reset piece and/or the pulling force of the second elastic reset piece to swing downwards under the action of centrifugal force, so that the valve plug drives the resistance end of the swing rod to move upwards, and the water outlet is opened.

Furthermore, the valve plug is positioned outside the inner barrel and is sealed below the water outlet, and the gravity center of the centrifugal hammer is lower than the lever fulcrum of the swing rod;

in the washing or rinsing process, the valve plug is tightly sealed on the water outlet under the action of the upward twisting force of the first elastic resetting piece and/or the pushing force of the second elastic resetting piece, so that the inner barrel independently holds water in the washing or rinsing process;

in the dewatering process, the centrifugal hammer overcomes the upward torsion force of the first elastic reset piece and/or the upward swinging of the thrust force of the second elastic reset piece under the action of centrifugal force, so that the valve plug drives the resistance end of the swinging rod to move downwards to open the water outlet.

Furthermore, the drain valve assembly also comprises a rotary strut, one end of the rotary strut is fixedly connected to the bottom of the inner barrel, and the other end of the rotary strut extends downwards to be rotatably supported and connected with the middle part of the swinging rod; the lower end part of the rotating support is provided with a fulcrum rotating shaft, and the middle part of the swinging rod is correspondingly provided with a rotating shaft hole which is in running fit with the fulcrum rotating shaft.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

1. According to the drainage valve component of the washing machine, the centrifugal hammer can swing downwards or upwards towards the direction close to the horizontal plane where the lever fulcrum is located under the action of the centrifugal force and the restriction of the lever structure, so that the valve plug is driven to move upwards or downwards around the lever fulcrum to drain water, the centrifugal hammer can provide acting force parallel to the central axis direction of the inner barrel for the valve plug under the action of the centrifugal force, and therefore the valve plug of the drainage valve component can be directly installed at a drainage port without reversing through a connecting pipeline, the structure of the whole drainage valve component is simpler, the phenomenon of drainage blockage is not prone to occurring, and the drainage efficiency is higher.

2. In the washing machine provided by the invention, the valve plug blocks the water outlet to form the closed inner barrel in the washing/rinsing process, so that the condition that dirt and thread scraps are remained due to water stored between the inner barrel and the outer barrel is avoided. In an initial state, the gravity center of the centrifugal hammer and the lever fulcrum are not on the same horizontal plane, and in a dehydration state, the centrifugal hammer can swing upwards or downwards under the action of centrifugal force and the constraint of hard connection of a lever structure, so that acting force in the direction parallel to the central axis of the inner barrel is provided for the valve plug, the water outlet can be arranged at the bottom of the inner barrel, and the valve plug can be directly arranged on the water outlet at the bottom of the inner barrel, and the water drainage efficiency of the washing machine is improved.

3. According to the washing machine provided by the invention, the drain valve component is more flexible in installation position through the design of different heights of the gravity center of the centrifugal hammer and the lever fulcrum and the arrangement of the lever structure and the arranged linkage piece, and compared with the existing drainage device of the washing machine, the drain valve component is simple in structure, easy to realize, small in occupied space and beneficial to the expansion of the inner barrel of the washing machine.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is an assembly schematic of a drain valve assembly according to a first embodiment in an example of the invention;

FIG. 2 is a schematic view of an open state of a drain valve assembly in a first embodiment of an embodiment of the present invention;

FIG. 3 is a schematic view of a first embodiment of a drain valve assembly in a closed state according to an embodiment of the present invention

Fig. 4 is a schematic view showing an opened state of a drain valve assembly in a second embodiment in the example of the present invention;

FIG. 5 is a schematic view of a second embodiment of a drain valve assembly in accordance with an embodiment of the present invention in a closed position

In the figure:

100. an inner barrel bottom; 101. a water outlet;

200. a flange plate; 201. installing a notch; 202. installing a groove;

300. a valve plug; 301. a sealing cover; 302. a support bar; 303. a gasket;

400. a swing lever; 401. a horizontal segment; 402. a vertical section; 403. lever fulcrum/fulcrum rotating shaft

500. A linkage rod; 600. a centrifugal hammer;

700. a guide seat; 701. a guide portion; 702. a fixed connection part; 703. an avoidance groove;

800. the support is rotated.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it for those skilled in the art by reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

The present invention will be described in further detail with reference to examples.

Example one

As shown in fig. 1 to 5, the present embodiment provides a drain valve assembly of a washing machine, which includes a valve plug 300 disposed at a bottom 100 of the washing machine, and a driving part for controlling the opening and closing of the valve plug 300, wherein the driving part includes a centrifugal weight 600 capable of swinging upward or downward under the action of centrifugal force, and the centrifugal weight 600 is connected to the valve plug 300 by a lever structure having a lever fulcrum 403 rotatably supported and fixed at the bottom 100 of the washing machine. The gravity center of the centrifugal hammer 600 and the lever fulcrum 403 are not on the same horizontal plane, the centrifugal hammer 600 swings towards the direction close to the horizontal plane where the lever fulcrum 403 is located under the action of centrifugal force, and the valve plug 300 moves downwards or upwards around the lever fulcrum 403 along with the swing of the centrifugal hammer 600 to realize opening and closing.

In this embodiment, the gravity center of the centrifugal hammer 600 and the lever fulcrum 403 are not on the same horizontal plane, and the centrifugal hammer 600 and the valve plug 300 are rigidly connected through the lever structure, so that the centrifugal hammer 600 of the drainage valve assembly of the washing machine can swing downwards or upwards in the direction of the horizontal plane near the lever fulcrum 403 under the action of centrifugal force and the restriction of the lever structure, and further drives the valve plug 300 to move upwards or downwards around the lever fulcrum 403 for drainage, and the centrifugal hammer 600 can provide acting force parallel to the central axis direction of the inner barrel for the valve plug 300 under the action of centrifugal force, so that the valve plug 300 of the drainage valve assembly can be directly installed at the drainage port 101 without reversing through a connecting pipeline, so that the structure of the whole drainage valve assembly is simpler, the drainage blocking phenomenon is not easy to occur, and the drainage efficiency is higher.

In this embodiment, the centrifugal hammer 600 is preferably made of a metal material with a relatively high density, and preferably, the centrifugal hammer 600 is coated with a rubber material, so as to play a role in buffering and damping vibration and prevent rusting and corrosion.

The lever structure of the drain valve assembly comprises a swing rod 400 with a power end connected to the centrifugal hammer 600 and a resistance end connected to the valve plug 300, and the weight of the structures such as the swing rod 400, the valve plug 300 and the like can be ignored due to the heavier centrifugal hammer 600, so that the drain valve assembly can be designed only by considering the position relationship between the gravity center of the centrifugal hammer 600 and the lever fulcrum 403.

Specifically, a connecting line between the center of gravity of the centrifugal hammer 600 and the lever fulcrum 403 and a horizontal plane where the lever fulcrum 403 is located are arranged at a certain inclined included angle, and under the action of centrifugal force, the centrifugal hammer 600 can swing towards the horizontal plane where the lever fulcrum 403 is located. The drain valve assembly can be designed in the following two embodiments.

In the first embodiment, as shown in fig. 1 to 3, the valve plug 300 is sealingly disposed inside the inner tub bottom 100, the center of gravity of the centrifugal weight 600 is disposed higher than the lever fulcrum 403, the centrifugal weight 600 swings downward under the centrifugal force, and the resistance end of the swing lever 400 drives the valve plug 300 to move upward around the lever fulcrum 403 to open the valve plug 300.

In the above embodiment, the structure of the swing lever 400 has the following two implementations:

in the first solution, the swing lever 400 is a straight lever, and in the initial state, the swing lever 400 is disposed in an inclined manner gradually from the inner side to the outer side, and the swing lever 400 is disposed in an inclined manner gradually from the resistance end connected to the valve plug 300 toward the power end. The centrifugal hammer 600 swings downward under the action of centrifugal force to approach a horizontal plane where the lever fulcrum 403 is located, and the valve plug 300 moves upward around the lever fulcrum 403 under the action of a lever structure to open the water outlet 101 of the inner tub bottom 100 for water drainage.

In a second alternative, as shown in fig. 1 to 3, the swing rod 400 is a bent rod, the swing rod 400 includes a horizontal section 401 and a vertical end, one end of the horizontal section 401 is connected to the valve plug 300, the other end is connected to the vertical section 402, and the vertical section 402 is formed by extending the end of the horizontal section 401 upwards. The centrifugal hammer 600 is fixedly connected to the upper end portion of the vertical section 402, the gravity center of the centrifugal hammer 600 is located above the horizontal plane where the lever fulcrum 403 is located, the centrifugal hammer 600 can swing downwards under the action of centrifugal force to be close to the horizontal plane where the lever fulcrum 403 is located, and the valve plug 300 moves upwards around the lever fulcrum 403 under the action of a lever structure to open the water outlet 101 of the inner barrel bottom 100 for draining water.

In a second embodiment, as shown in fig. 4 and 5, the valve plug 300 is sealingly disposed outside the inner tub bottom 100, the center of gravity of the centrifugal weight 600 is disposed below the lever fulcrum 403, the centrifugal weight 600 swings upward under the centrifugal force, and the resistance end of the swing lever 400 drives the valve plug 300 to move downward around the lever fulcrum 403 to open the valve plug 300.

In the above embodiment, the structure of the swing lever 400 has the following two implementations:

In the first scheme, the swing rod 400 is a straight rod, and in an initial state, the swing rod 400 is obliquely arranged, the swing rod 400 is gradually and obliquely inclined from the inner side to the outer side, and the swing rod 400 is gradually and obliquely inclined from the resistance end connected with the valve plug 300 to the power end. The centrifugal hammer 600 swings upward under the action of centrifugal force to approach a horizontal plane where the lever fulcrum 403 is located, and the valve plug 300 moves downward around the lever fulcrum 403 under the action of a lever structure to open the water outlet 101 of the inner tub bottom 100 for water drainage.

In a second alternative, as shown in fig. 2 to 5, the swing rod 400 is a bent rod, the swing rod 400 includes a horizontal section 401 and a vertical end, one end of the horizontal section 401 is connected to the valve plug 300, the other end is connected to the vertical section 402, and the vertical section 402 is formed by extending the end of the horizontal section 401 downward. The centrifugal hammer 600 is fixedly connected to the lower end portion of the vertical section 402, the gravity center of the centrifugal hammer 600 is located below the horizontal plane where the lever fulcrum 403 is located, the centrifugal hammer 600 can swing upwards under the action of centrifugal force to approach the horizontal plane where the lever fulcrum 403 is located, and the valve plug 300 moves downwards around the lever fulcrum 403 under the action of a lever structure to open the water outlet 101 of the inner barrel bottom 100 for draining water.

Further, centrifugal hammer 600 and valve plug 300 are connected respectively to the both ends of lever structure, lever fulcrum 403 is located the middle part position of lever structure, lever structure is including being located the power arm between centrifugal hammer 600 and lever fulcrum 403 and being located the resistance arm between valve plug 300 and the lever fulcrum 403, the projection of focus on lever structure is located on the power arm. The center of gravity may be the center of gravity of the entire drain valve assembly, and preferably, the center of gravity is the center of gravity of the centrifugal hammer 600. Through the design, make the focus fall on keeping away from the power arm of valve plug 300 side, so that centrifugal hammer 600 can provide sufficient driving force for valve plug 300 under the effect of centrifugal force, make valve plug 300 open.

In one embodiment, a first elastic restoring member is disposed at the lever fulcrum 403, and is used for providing an upward or downward twisting force to the resistance end of the swing rod 400 against the gravity of the centrifugal weight 600, so that the valve plug 300 maintains a closed state in an initial state. The torsional force is greater than the gravity of the centrifugal hammer 600 so that the valve plug 300 can maintain a seal in an initial state.

In the above aspect, when the valve plug 300 is disposed inside the inner bottom 100, the first elastic restoring member applies a downward twisting force to the valve plug 300, so that the valve plug 300 maintains a seal in an initial state, and when the valve plug 300 is disposed outside the inner bottom 100, the first elastic restoring member applies an upward twisting force to the valve plug 300, so that the valve plug 300 maintains a seal in an initial state.

Preferably, the drain valve assembly further includes a fulcrum rotating shaft 403 rotatably engaged with the swing lever 400, the fulcrum rotating shaft 403 is fixedly disposed, and the first elastic resetting member is a torsion spring disposed on the fulcrum rotating shaft 403. One end of the torsion spring is connected with the pivot shaft 403, and the other end of the torsion spring is connected with the swing lever 400, and applies a downward twisting force to the resistance end of the swing lever 400, so that the valve plug 300 can be tightly plugged on the water outlet 101.

Or, in another solution, the first elastic restoring member is a tension spring connected between the fulcrum rotating shaft 403 and a resistance arm of the swing lever 400, and applies an upward twisting force to the resistance end of the swing lever 400, so that the valve plug 300 can tightly close the water outlet 101.

In this embodiment, the valve plug 300 includes a sealing cover 301 and a supporting rod 302, the drain valve assembly further includes a mounting seat fixed to the inner bottom 100, the mounting seat has a hollow slideway, one end of the supporting rod 302 is fixedly connected to the sealing cover 301, and the other end of the supporting rod 302 is slidably disposed in the hollow slideway and movably connected to the swing rod 400. A second elastic restoring member is disposed between the sealing cap 301 and the mounting seat, and the second elastic restoring member is configured to provide a tensile force against the gravity of the centrifugal hammer 600 to the valve plug 300, so that the valve plug 300 maintains a closed state in an initial state.

Preferably, the second elastic resetting piece is a tension spring or a pressure spring sleeved outside the supporting rod 302, one end of the tension spring or the pressure spring is connected below the sealing cover 301, and the other end of the tension spring or the pressure spring is connected on the mounting seat. In the above scheme, the tension spring or the compression spring can pull the valve plug 300 to move reversely when the centrifugal force of the centrifugal hammer 600 disappears, so that the valve plug 300 is sealed at the drain port 101 of the inner barrel bottom 100, and the automatic resetting of the drain valve assembly is realized to plug the drain port 101.

In above-mentioned two kinds of schemes, first elasticity piece and the second elasticity piece that resets sets up alone, also can set up alone, when setting up first elasticity piece that resets alone, guarantees the torsional force that first elasticity piece that resets is greater than centrifugal hammer 600's gravity, when setting up the second elasticity piece that resets alone, guarantees the tensile force that the second elasticity piece that resets is greater than centrifugal hammer 600's gravity. When first elasticity resets and second elasticity resets and sets up simultaneously, guarantees that the torsion force of first elasticity resets and the tensile force sum that the second elasticity resets is greater than centrifugal hammer 600's gravity.

In another preferred embodiment, as shown in fig. 2 and 3, the drain valve assembly further includes a linkage member rotatably connected between the valve plug 300 and the swing rod 400, one end of the linkage member is hinged to the valve plug 300, and the other end is hinged to the swing rod 400; the centrifugal weight 600 swings upward or downward by the centrifugal force, and the resistance end of the swing lever 400 swings downward or upward around the lever fulcrum 403, thereby moving the valve plug 300 through the link. Through the linkage piece that sets up between valve plug 300 and rocking rod 400, can make the motion between valve plug 300 and the rocking rod 400 more nimble smooth and easy, the fault-tolerant rate is higher.

Preferably, the linkage member is a linkage rod 500, a connecting portion is arranged at a resistance end of the swinging rod 400 connected with the linkage rod 500, a first pin hole is formed in the connecting portion, a second pin hole is formed at one end of the linkage rod 500 connected with the swinging rod 400, and a connecting pin is rotatably inserted into the first pin hole and the second pin hole to connect the swinging rod 400 with the linkage rod 500.

In a further scheme of this embodiment, as shown in fig. 3, in an initial state, an included angle between the linkage rod 500 and the swing rod 400 is smaller than 90 degrees, and in a dehydration state, as shown in fig. 2, the centrifugal hammer 600 swings downward under the action of centrifugal force, and the included angle between the linkage rod 500 and the swing rod 400 increases gradually, so as to drive the valve plug 300 to move upward, and open the drain opening 101 for draining water.

Further, as shown in fig. 1 to 3, the guide seat 700 includes a cylindrical guide part 701, the hollow slide is formed in the guide part 701, and an avoiding groove 703 that is through-arranged along the swing direction of the linkage rod 500 is disposed at the lower end of the peripheral wall of the guide part 701. Along the swing direction of the linkage rod 500, a first avoidance opening and a second avoidance opening are formed in the peripheral wall of the guide part 701 in a radial direction in a facing mode, and the first avoidance opening, the second avoidance opening and the interior of the guide part 701 are limited to form the avoidance groove 703.

In the above-described aspect, the movement of the support rod 302 in the vertical direction is limited by the hollow slide of the guide seat 700, so that the movement of the swing force of the centrifugal hammer 600 in the vertical circumferential direction is effectively converted into the movement of the valve plug 300 in the vertical direction by the linkage rod 500 and the swing rod 400. In addition, a sufficient avoidance space is reserved for the swinging of the linkage rod 500 through the avoidance groove 703 arranged on the guide seat 700, so that the support rod 302, the linkage rod 500, the swinging rod 400 and the guide part 701 can be effectively matched, the valve plug 300 can move up and down under the driving of the water levels of the swinging rod 400 and the linkage rod 500, and the water outlet 101 is opened or closed.

Example two

As shown in fig. 1 to 5, the present embodiment provides a washing machine having the above described drain valve assembly of the washing machine.

The washing machine provided by the embodiment comprises an inner barrel, wherein a water outlet 101 is formed in the bottom of the inner barrel, and the water outlet 101 is provided with the water discharge valve assembly of the washing machine in the first embodiment; the valve plug 300 of the water discharge valve assembly blocks the water outlet 101 during the washing or rinsing process, so that the inner barrel can independently contain water during the washing or rinsing process; during the dehydration, the centrifugal weight 600 swings in a direction close to the horizontal plane where the fulcrum 403 is located under the action of the centrifugal force and the constraint of the lever structure, so that the valve plug 300 moves upward or downward around the fulcrum 403 to open the drain opening 101.

In one embodiment, as shown in fig. 1 to 3, the valve plug 300 is located inside the inner barrel and sealed above the water outlet 101, and the center of gravity of the centrifugal hammer 600 is located higher than the lever fulcrum 403 of the swing lever 400;

in the washing or rinsing process, the valve plug 300 is tightly covered on the water outlet 101 under the downward twisting force of the first elastic resetting piece and/or the pulling force of the second elastic resetting piece, so that the inner barrel can independently contain water in the washing or rinsing process;

In the dewatering process, the centrifugal hammer 600 overcomes the downward twisting force of the first elastic reset piece and/or the downward pulling force of the second elastic reset piece to swing downwards under the action of centrifugal force, so that the valve plug 300 drives the upward movement at the resistance end of the swing rod 400 to open the water outlet 101.

In another embodiment, as shown in fig. 4 and 5, the valve plug 300 is located outside the inner barrel and sealed below the water outlet 101, and the center of gravity of the centrifugal hammer 600 is located below the lever fulcrum 403 of the swing lever 400;

during the washing or rinsing process, the valve plug 300 is tightly sealed on the water outlet 101 under the action of the upward twisting force of the first elastic resetting piece and/or the pushing force of the second elastic resetting piece, so that the inner barrel independently contains water during the washing or rinsing process;

in the dewatering process, the centrifugal hammer 600 overcomes the upward twisting force of the first elastic restoring member and/or the pushing force of the second elastic restoring member to swing upward under the action of centrifugal force, so that the valve plug 300 drives the downward movement at the resistance end of the swing rod 400 to open the water outlet 101.

Further, the drain valve assembly further comprises a rotary strut 800, one end of the rotary strut 800 is fixedly connected to the bottom of the inner barrel, and the other end extends downwards to be rotatably supported and connected with the middle part of the swing rod 400; a fulcrum rotating shaft 403 is arranged at the lower end of the rotating pillar 800, and a rotating shaft hole which is in rotating fit with the fulcrum rotating shaft 403 is correspondingly arranged at the middle part of the swinging rod 400.

The washing machine further comprises a flange 200 arranged on the outer side of the inner barrel bottom 100, an installation gap 201 for avoiding and installing the drainage valve assembly is arranged on the flange 200 corresponding to the drainage port 101, and a fixed seat of the drainage valve assembly is fixedly connected to the flange 200.

Preferably, the mount pad includes that one is the guide part 701 of tube-shape and is used for with fixed connection 702 on the ring flange 200 is fixed to guide part 701, be provided with the mounting groove 202 that the round undercut formed on the downside of ring flange 200, fixed connection 702 including inlay the fixed wall of arc of laminating in mounting groove 202 and connect the transitional coupling wall between fixed wall of arc and the guide part 701, through the cooperation of the fixed wall of mounting groove 202 and arc, make the fixed wall of arc can hide the setting, and occupation space is littleer.

Preferably, the arc-shaped fixing wall is fixed to the flange plate 200 through screws, so that the assembly and disassembly of the drain valve assembly are facilitated.

In the preferred scheme of this embodiment, the sealing gasket 303 is fixedly arranged on the lower side or the lower side of the periphery of the sealing cover 301, and when the valve plug 300 seals the drain opening 101, the sealing gasket 303 is in sealing fit with the periphery of the drain opening 101, so as to achieve a better sealing effect. Meanwhile, as the valve plug 300 blocks the water outlet 101 from the inner barrel, when the inner barrel contains water, the water pressure at the bottom 100 of the inner barrel acts on the sealing cover 301, which can also provide auxiliary sealing force and improve the sealing effect.

According to the washing machine provided by the embodiment of the invention, the drain valve component is more flexible in installation position through the design of different heights of the gravity center of the centrifugal hammer 600 and the lever supporting point 403 and the arrangement of the lever structure and the arranged linkage piece, and compared with the existing drainage device of the washing machine, the drain valve component is simple in structure, easy to realize, small in occupied space and beneficial to expanding the capacity of the inner barrel of the washing machine.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a washing machine drain valve subassembly, is including setting up the valve plug at the bottom of the barrel in washing machine and the driver part of control valve plug switching, its characterized in that: the driving part comprises a centrifugal hammer which can swing upwards or downwards under the action of centrifugal force, the centrifugal hammer is connected with the valve plug through a lever structure, and the lever structure is provided with a lever fulcrum which can be rotatably supported and fixed at the bottom of the inner barrel;

The gravity center of the centrifugal hammer and the lever fulcrum are not on the same horizontal plane, the centrifugal hammer swings towards the direction close to the horizontal plane where the lever fulcrum is located under the action of centrifugal force, and the valve plug moves downwards or upwards around the lever fulcrum along with the swing of the centrifugal hammer to achieve opening and closing.

2. A washing machine drain valve assembly as claimed in claim 1, wherein:

the lever structure comprises a swinging rod with a power end connected to the centrifugal hammer and a resistance end connected to the valve plug, and the connecting line of the gravity center of the centrifugal hammer and the lever fulcrum and the horizontal plane where the lever fulcrum is located form a certain inclined included angle;

the valve plug is arranged on the inner side of the bottom of the inner barrel in a sealing mode, the gravity center of the centrifugal hammer is higher than that of a lever fulcrum, the centrifugal hammer swings downwards under the action of centrifugal force, and the resistance end of the swing rod drives the valve plug to move upwards around the lever fulcrum to open the valve plug;

or, the barrel head outside including the sealed setting of valve plug, the focus of centrifugal hammer is less than the lever fulcrum setting, the centrifugal hammer upwards swings under the centrifugal force effect, the resistance end drive valve stopper of swinging arms is round lever fulcrum downstream opens the valve plug.

3. A washing machine drain valve assembly according to claim 1 or 2, wherein:

centrifugal hammer and valve plug are connected respectively at lever structure's both ends, the lever fulcrum is located lever structure's middle part position, lever structure is including being located the power arm between centrifugal hammer and the lever fulcrum and being located the resistance arm between valve plug and the lever fulcrum, the projection of focus on lever structure is located on the power arm.

4. A washing machine drain valve assembly as recited in claim 2, wherein:

a first elastic resetting piece is arranged at the fulcrum of the lever and is used for providing upward or downward torsional force for overcoming the gravity of a centrifugal hammer to the resistance end of the swinging rod so as to enable the valve plug to keep a closed state in an initial state;

preferably, the drain valve assembly further comprises a fulcrum rotating shaft in rotating fit with the swing rod, and the first elastic resetting piece is a torsion spring arranged on the fulcrum rotating shaft.

5. A washing machine drain valve assembly according to any of claims 2-4, characterized in that:

the valve plug comprises a sealing cover and a supporting rod, the drain valve assembly further comprises a mounting seat fixed at the bottom of the inner barrel, the mounting seat is provided with a hollow slideway, one end of the supporting rod is fixedly connected with the sealing cover, and the other end of the supporting rod is slidably arranged in the hollow slideway and movably connected with the swinging rod;

A second elastic resetting piece is arranged between the sealing cover and the mounting seat and used for providing tensile force for overcoming the gravity of a centrifugal hammer to the valve plug so that the valve plug is kept in a closed state in an initial state;

preferably, the second elastic resetting piece is a tension spring or a pressure spring sleeved outside the support rod, one end of the tension spring or the pressure spring is connected below the sealing cover, and the other end of the tension spring or the pressure spring is connected on the mounting seat.

6. A washing machine drain valve assembly according to any one of claims 2-5, wherein:

the drain valve assembly further comprises a linkage piece which is rotatably connected between the valve plug and the swing rod, one end of the linkage piece is hinged with the valve plug, and the other end of the linkage piece is hinged with the swing rod;

the centrifugal hammer swings upwards or downwards under the action of centrifugal force, the resistance end of the swing rod swings downwards or upwards around the lever fulcrum, and the linkage piece drives the valve plug to move;

preferably, the linkage piece is a linkage rod, a connecting portion is arranged at a resistance end of the swinging rod connected with the linkage rod, a first pin hole is formed in the connecting portion, a second pin hole is formed at one end of the linkage rod connected with the swinging rod, and a connecting pin is rotatably inserted into the first pin hole and the second pin hole to connect the swinging rod with the linkage rod.

7. A washing machine comprises an inner barrel, wherein a water outlet is formed in the bottom of the inner barrel, and the washing machine is characterized in that: a drain outlet is provided with a drain valve assembly of the washing machine as claimed in any one of claims 1 to 6;

in the washing or rinsing process, the valve plug of the drainage valve component blocks the drainage port, so that the inner barrel independently holds water in the washing or rinsing process;

in the dehydration process, the centrifugal hammer swings towards the direction close to the horizontal plane where the lever fulcrum is located under the action of centrifugal force and the restriction of the lever structure, so that the valve plug moves upwards or downwards around the lever fulcrum to open the water outlet.

8. The washing machine as claimed in claim 7, wherein: the valve plug is positioned in the inner barrel and is sealed above the water outlet, and the gravity center of the centrifugal hammer is higher than the lever fulcrum of the swing rod;

in the washing or rinsing process, the valve plug is tightly covered on the water outlet under the action of the downward twisting force of the first elastic resetting piece and/or the pulling force of the second elastic resetting piece, so that the inner barrel independently holds water in the washing or rinsing process;

in the dewatering process, the centrifugal hammer overcomes the downward torsional force of the first elastic reset piece and/or the pulling force of the second elastic reset piece to swing downwards under the action of centrifugal force, so that the valve plug drives the resistance end of the swing rod to move upwards, and the water outlet is opened.

9. The washing machine as claimed in claim 6, wherein: the valve plug is positioned outside the inner barrel and is sealed below the water outlet, and the gravity center of the centrifugal hammer is lower than the lever fulcrum of the swing rod;

in the washing or rinsing process, the valve plug is tightly sealed on the water outlet under the action of the upward twisting force of the first elastic resetting piece and/or the pushing force of the second elastic resetting piece, so that the inner barrel independently holds water in the washing or rinsing process;

in the dewatering process, the centrifugal hammer overcomes the upward torsion force of the first elastic reset piece and/or the upward swinging of the thrust force of the second elastic reset piece under the action of centrifugal force, so that the valve plug drives the resistance end of the swinging rod to move downwards to open the water outlet.

10. A washing machine according to any one of claims 7-9, characterized in that:

the water drain valve assembly further comprises a rotary support column, one end of the rotary support column is fixedly connected to the bottom of the inner barrel, and the other end of the rotary support column extends downwards and is rotatably supported and connected with the middle part of the swinging rod; the lower end of the rotating support column is provided with a fulcrum rotating shaft, and the middle part of the swinging rod is correspondingly provided with a rotating shaft hole which is in running fit with the fulcrum rotating shaft.

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