CN113957674A

CN113957674A - Washing machine with pressure plate assembly and anti-floating control method

Info

Publication number: CN113957674A
Application number: CN202111211180.4A
Authority: CN
Inventors: 李朝辉; 肖磊; 王开明
Original assignee: Chongqing Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Chongqing Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-01-21

Abstract

The invention discloses a washing machine with a pressure plate assembly and an anti-floating control method, wherein the washing machine comprises: a box body; the upper cover is hinged; a washing tub located in the cabinet; the pressing plate component is arranged on the upper cover in a telescopic mode and used for pressing the easily floating clothes; the pressing plate assembly is provided with a pressing plate positioned at the lower end, an expansion bracket connected between the pressing plate and the upper cover, and a driving device used for driving the expansion bracket to expand and contract. By arranging the telescopic pressing plate assembly, the pressing plate assembly can be started when the floating clothes are washed, and the pressing plate extends downwards, so that the clothes floating on the water surface can be pressed downwards, the contact between the floating clothes and washing water is increased, and the washing cleanliness is ensured; the telescopic frame is controlled to stretch by the driving device, signals can be given to the driving device as required, and the pressing plate is controlled to move upwards or downwards, so that the pressing plate can be adjusted at any time as required in the washing process, and the washing effect on clothes is improved.

Description

Washing machine with pressure plate assembly and anti-floating control method

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a washing machine with a pressure plate assembly and an anti-floating control method of the washing machine.

Background

The existing pulsator washing machine generally comprises a box body, an outer barrel and an inner barrel which are arranged in the box body, wherein a pulsator is arranged at the bottom of the inner barrel, and when the pulsator rotates, water injected into the outer barrel and washings thrown into the inner barrel are driven to rotate so as to wash the washings.

When the washing machine is used for washing washings which are easy to float on the water surface, such as down jackets, silk floss and the like, the washings float on the water surface and have large volume, so that the washings cannot be completely soaked in the water and cannot be fully contacted with the impeller, and the washing effect of washing the washings is poor.

In order to improve the cleaning ratio of the washing machine to the washings which are easy to float on the water surface, for example, chinese patent CN202359398U discloses a pressing plate of the washing machine, which comprises a disc-shaped body capable of being elastically bent and deformed, a plurality of water discharge holes are arranged on the disc-shaped body, a plurality of convex washing blocks are arranged on the front surface of the disc-shaped body, the floating clothes can be fully contacted with the pressing plate to generate friction when washing, thereby effectively improving the cleaning ratio of the pulsator washing machine to wash the clothes which are easy to float, such as down jackets, etc., but the pressing plate can only play a role of blocking the clothes from floating under the condition that the pressing plate is below the water surface after all the clothes enter the washing machine, meanwhile, most parts of the clothes float above the water surface when the clothes which are easy to float, such as down jackets, etc., just enter the water, the pressing plate is brought to the inlet of the inner barrel of the washing machine by the floating clothes, and cannot play a role of blocking the clothes from floating, meanwhile, as the floating part of the clothes such as down jackets and the like is not filled with water, the part of the clothes floating above the water surface can not be contacted with the water added with the washing liquid in the rotating process of the washing machine, the washing effect is reduced, and the clothes are easy to wear and even damage due to friction with the pressing plate.

At present, a fixing structure for fixing the pressure plate is arranged in the inner barrel, so that floating clothes are prevented from jacking up the pressure plate, but the pressure plate can only be fixed on the fixing structure of the inner barrel; such as the position where the wash water level is far from the fixed structure, so that the pressing plate does not function. Even if a plurality of fixing structures are arranged in the up-and-down direction of the inner barrel, the position of the pressure plate can be adjusted; but the position of the pressure plate is fixed during one washing cycle of the washing machine. In the washing process, the washings can contact with the impeller to achieve a better washing effect, so that the fixed position of the pressing plate is lower, the movement space of the washings is smaller in the rinsing process, and the rinsing effect on the washings is poorer.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

Disclosure of Invention

The invention provides a washing machine with a pressure plate assembly, aiming at the problems in the prior art, the clothes floating on the water surface are pressed downwards, the complete contact between the floating clothes and the washing water is ensured, and the cleanliness of the washing is ensured; and the pressure plate can be adjusted at any time according to the requirement in the washing process.

In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:

a washing machine having a platen assembly, comprising:

a box body;

the upper cover is hinged;

a washing tub located in the cabinet;

the pressing plate component is arranged on the upper cover in a telescopic mode and used for pressing the easily floating clothes;

the pressing plate assembly is provided with a pressing plate positioned at the lower end, an expansion bracket connected between the pressing plate and the upper cover, and a driving device used for driving the expansion bracket to expand and contract.

Furthermore, the expansion bracket is provided with a first hinge bracket and a second hinge bracket which are formed by sequentially hinging a plurality of hinge units end to end, and the hinge units corresponding to the first hinge bracket and the second hinge bracket are hinged at the middle part.

Furthermore, an upper mounting seat is fixedly arranged on the upper cover, the upper end of the first hinge frame is hinged on the upper cover, and the upper end of the second hinge frame is movably arranged on the upper mounting seat.

Furthermore, a first articulated shaft is arranged at the upper end of the second articulated frame, the driving device is provided with a driving motor, a lead screw is connected with an output shaft of the driving motor, a nut pair matched with the lead screw is arranged on the first articulated shaft, and the driving device can drive the first articulated shaft to move.

Furthermore, the first hinge shaft is provided with a limiting extension part which extends outwards and extends out of the second hinge frame, a limiting groove used for accommodating the limiting extension part is formed in the upper mounting seat, and the limiting extension part is movably located in the limiting groove.

Furthermore, the limiting extension part is provided with an extension shaft and a limiting wheel sleeved outside the extension shaft, and the limiting wheel can be positioned in the limiting groove in a rolling manner.

Further, the spacing groove have with spacing round assorted holding tank, with extend the axle match and with the intercommunication groove of holding tank intercommunication, the height in intercommunication groove is less than the height of holding tank.

Furthermore, the upper mounting seat is two mounting rods arranged in parallel, and the expansion bracket is positioned in a space between the two mounting rods.

Furthermore, a pressure sensor for sensing the pressure is arranged on the pressure plate.

Further, the driving motor is fixedly arranged on the upper cover.

Furthermore, a lower mounting seat is arranged on the pressing plate, the lower end of the first hinge frame is hinged to the pressing plate, and the lower end of the second hinge frame is movably arranged on the lower mounting seat.

Based on the washing machine, the invention also provides a control method of the washing machine, which is characterized in that clothes floating on the water surface are pressed downwards, the contact between the floating clothes and washing water is increased, and the cleanliness of washing is ensured; and the pressure plate can be adjusted at any time according to the requirement in the washing process.

The anti-floating control method of the washing machine is characterized in that the pressure sensor is arranged on the pressure plate, and the anti-floating control method comprises the following steps:

s10, after starting, judging a water inlet level N1, and injecting water into the washing barrel;

s20, the driving device acts, the pressure plate moves downwards, and the extending distance L1 of the pressure plate is determined according to the water inlet level N1;

and S30, in the washing process, the feedback value of the pressure sensor is in a set pressure range by adjusting the height of the pressure plate.

Further, in step S20, after the pressing plate is extended, the lower end surface of the pressing plate is lower than or flush with the liquid level in the washing tub.

Further, the washing machine is provided with an imaging device for irradiating the inside of the washing tub, and in step S10, the height H1 at which the laundry in the washing tub floats on the water surface is determined by the imaging device.

Further, in step 20, the protrusion distance L1 of the pressing plate is determined according to the water inlet level N1 and the height H1 at which the laundry floats out of the water.

Furthermore, when the height H1 of the clothes floating on the water surface is larger than the set height H0, the set pressure range is adjusted.

And S40, when the washing machine is used for rinsing, the extension distance L2 of the pressure plate is set, L2 is less than L1, and the driving assembly drives the pressure plate to move up and down between the extension distances L2 and L1 during rinsing.

Compared with the prior art, the invention has the advantages and positive effects that: by arranging the telescopic pressing plate assembly, the pressing plate assembly can be started when the floating clothes are washed, and the pressing plate extends downwards, so that the clothes floating on the water surface can be pressed downwards, the contact between the floating clothes and washing water is increased, and the washing cleanliness is ensured; the telescopic frame is controlled to stretch by the driving device, signals can be given to the driving device as required, and the pressing plate is controlled to move upwards or downwards, so that the pressing plate can be adjusted at any time as required in the washing process, and the washing effect on clothes is further improved.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a washing machine having a platen assembly according to the present invention;

FIG. 2 is a schematic view of the structure of the upper cover of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

FIG. 4 is an enlarged schematic view of region A in FIG. 3;

FIG. 5 is a schematic structural view illustrating an operating state of the platen assembly of FIG. 1;

FIG. 6 is a schematic flow chart of a first anti-floating control method of the washing machine;

FIG. 7 is a flow chart illustrating a second and third anti-floating control method of the washing machine;

fig. 8 is a flowchart illustrating a fourth anti-floating control method of the washing machine.

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 of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the positional relationship in the normal operation state of the washing machine, and the direction close to the axis of the inner tub is "inner", and vice versa. The terminology is for the purpose of describing the invention only and is for the purpose of simplifying the description, and is not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed and operated, and is not to be considered limiting of the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example one

Referring to fig. 1 to 5, which are one embodiment of a washing machine having a platen assembly according to the present invention, a washing machine 100 having a platen assembly includes: the washing machine comprises a box body 10, an upper cover 20, a washing barrel 30, a pressure plate assembly 40 and a control panel seat 50 positioned above the box body 10, wherein a clothes inlet is formed on the control panel seat 50; the upper cover 20 is hinged on the control panel seat 50, and the upper cover 20 is used for opening or closing the clothes input opening. The washing tub 30 is located in the cabinet 10, and the washing tub 30 has an inner tub for holding washing water therein and an outer tub rotatably located in the outer tub.

In other embodiments, the washing tub 30 may include only an outer tub without an inner tub.

The pressure plate assembly 40 is telescopically arranged on the upper cover 20, and the pressure plate assembly 40 is used for pressing floating clothes; the pressing plate assembly 40 has a pressing plate 41 at a lower end, a telescopic frame 42 connected between the pressing plate 41 and the upper cover 20, and a driving device 43 for driving the telescopic frame 42 to be telescopic. The pressing plate assembly 40 works when the washing machine washes easily-floating clothes, the pressing plate assembly 40 can be started when the floating clothes are washed by arranging the telescopic pressing plate assembly 40, the clothes floating on the water surface can be pressed downwards by extending the pressing plate 41 downwards, the contact between the floating clothes and washing water is increased, and the washing cleanliness is ensured; the driving device 43 is used for controlling the telescopic frame 42 to stretch, signals can be given to the driving device 43 according to needs, and the pressing plate 41 can be controlled to move upwards or downwards, so that the pressing plate 41 can be adjusted as required in the washing process, and the washing effect on clothes is further improved.

As for the structure of the telescopic frame 42, there can be various implementation manners, such as setting a driving device telescopic motor, where the telescopic frame is an extending shaft of the telescopic motor; or as a collapsible stand structure. In this embodiment, in order to increase the telescopic stability of the telescopic frame 42, the telescopic frame 42 is provided with a first hinge frame 421 and a second hinge frame 422 which are formed by sequentially hinging a plurality of hinge units end to end, the first hinge frame 421 and the second hinge frame 422 can be arranged in a folding manner, and the hinge units on the first hinge frame 421 and the corresponding hinge units on the second hinge frame 422 are hinged in the middle. The first hinge frame 421 and the second hinge frame 422 are hinged at the middle of the corresponding hinge unit, which is beneficial to increase stability.

An upper mounting seat 21 is fixedly arranged on the upper cover 20, the upper end of the first hinge frame 421 is hinged on the upper cover 20, and the upper end of the second hinge frame 422 is movably arranged on the upper mounting seat 21. The upper end of the second hinge frame 422 can be driven to move by the action of the driving device 43, so that the telescopic frame 42 can be extended and contracted in the vertical direction.

Specifically, the upper end of the second hinge frame 422 is provided with a first hinge shaft 4221, the driving device 43 comprises a driving motor 430, a screw rod 431 connected with an output shaft of the driving motor 430, and a nut pair 432 matched with the screw rod 431 is arranged on the first hinge shaft 4221, and the driving motor 430 can drive the first hinge shaft 4221 to move towards or away from the upper end of the first hinge frame 421. When the driving device 43 drives the screw rod 431 to rotate in the forward direction, the screw rod 431 and the nut pair 432 relatively rotate, so that the nut pair 432 and the first hinge shaft 4221 move towards the direction close to the driving motor 430, and the expansion bracket 42 extends downwards; when the driving device 43 drives the screw rod 431 to rotate reversely, the screw rod 431 and the nut pair 432 relatively rotate, so that the nut pair 432 and the first hinge shaft 4221 move in a direction away from the driving device 43, and the telescopic frame 42 retracts upwards.

In order to limit the second hinge frame 422 in the moving process, the first hinge shaft 4221 has a limit extension part 4222 extending outwards to extend out of the second hinge frame 422, a limit groove 211 for accommodating the limit extension part 4222 is formed in the upper mounting seat 21, and the limit extension part 4222 is movably located in the limit groove 211.

Specifically, the limit extension part 4222 is provided with an extension shaft 42221 and a limit wheel 42222 sleeved outside the extension shaft 4221, and the limit wheel 42222 can be positioned in the limit groove 211 in a rolling manner; when the driving device 43 drives the second hinge frame 422 to move, the limit wheel 42222 rolls in the limit groove 211, which is beneficial to reducing friction and increasing the smoothness of movement of the limit extension portion 4222 in the limit groove 211; facilitating the extension and retraction of the drive telescopic frame 42.

The limiting groove 211 is provided with an accommodating groove 2112 matched with the limiting wheel 42222 and a communicating groove 2111 matched with the extension shaft 42221, the communicating groove 2111 is communicated with the accommodating groove 2112, the height of the communicating groove 2111 is smaller than that of the accommodating groove 2112, namely, the limiting wheel 42222 is limited in the accommodating groove 2112, and the limiting wheel 42222 has no movable space in the axial direction, so that the stability of the second hinge frame 422 during movement is improved.

In this embodiment, the upper mounting base 21 is two mounting rods arranged in parallel, the telescopic frame 42 is located in a space range between the two mounting rods, and the limiting groove 211 is arranged on the mounting rods. The driving motor 430 is fixedly provided on the upper cover 20.

A lower mounting seat 411 is arranged on the pressing plate 41, the lower end of the first hinge frame 421 is hinged on the pressing plate 41, and the lower end of the second hinge frame 422 is movably arranged on the lower mounting seat 411. When the driving device 43 moves the first hinge shaft 4221, the second hinge frame 422 is extended or folded and contracted with respect to the first hinge frame 421, so that the lower end of the second hinge frame 422 also moves relatively. As for the fitting structure between the lower end of the second hinge frame 422 and the lower mount 411, the same structure between the upper end of the second hinge frame 422 and the upper mount 21 may be employed.

The pressure sensor 412 for sensing the pressure is provided on the pressure plate 41, and the position of the pressure plate 41 can be adjusted by the feedback value of the pressure sensor 412. When the washing machine washes easily floatable clothes, in the washing process, the inner tub and the pulsator rotate, so that the washing water rotates clockwise or counterclockwise, and water flow impacts upward, so that the pressure of the pressing plate 41 is increased; at this time, the driving device 43 may be instructed to slightly contract the telescopic frame 42, that is, the pressing plate 41 moves upward, so that the washing space is increased, which is beneficial to improving the washing efficiency. Therefore, the height of the pressing plate 41 is adjusted according to the pressure applied to the pressing plate 41, which is beneficial to washing the easily floating clothes.

Example two

Referring to fig. 6, which is a flowchart illustrating a first anti-floating control method of the washing machine, the washing machine 100 includes: the washing machine comprises a box body 10, an upper cover 20, a washing barrel 30, a pressure plate assembly 40 and a control panel seat 50 positioned above the box body 10, wherein a clothes inlet is formed on the control panel seat 50; the upper cover 20 is hinged on the control panel seat 50, and the upper cover 20 is used for opening or closing the clothes input opening. The washing tub 30 is located in the cabinet 10, the pressing plate assembly 40 is telescopically arranged on the upper cover 20, and the pressing plate assembly 40 is used for pressing the easily floating clothes; the pressing plate assembly 40 has a pressing plate 41 at a lower end, a telescopic frame 42 connected between the pressing plate 41 and the upper cover 20, and a driving device 43 for driving the telescopic frame 42 to be telescopic. The pressure sensor 412 is provided on the pressure plate 41.

An anti-floating control method of the washing machine comprises the following steps:

s10, after starting, judging the water inlet level N1, and injecting water into the washing tub 30;

specifically, for the determination of the inlet water level N1, the inlet water level may be determined in a load-bearing manner; or the user manually selects the intake water level, etc.

S20, actuating a driving device 43, moving the pressing plate 41 downwards to extend, wherein the extending distance L1 of the pressing plate 41 is determined according to the water inlet level N1;

specifically, an action instruction is given to the driving device 43, and the driving device 43 drives the telescopic frame 42 to extend out, so that the pressing plate 41 moves downwards; the extending distance L1 of the pressure plate 41 is determined according to the inlet water level N1, and the lower the inlet water level N1 is, the larger the extending distance L1 of the pressure plate 41 is; conversely, the higher the inlet water level N1, the smaller the extension distance L1 of the pressing plate 41.

It is preferable to set the lower end surface of the pressing plate 41 not higher than the liquid level in the washing tub 30, that is, the lower end surface of the pressing plate 41 is lower than or flush with the liquid level in the washing tub 30. The protruding distance L1 of the pressing plate 41 is greater than or equal to the distance between the pressing plate 41 and the liquid level in the washing tub 30 in the retracted state.

S30. during the washing process, the feedback value of the pressure sensor 412 is within the set pressure range by adjusting the height of the pressure plate 41.

Specifically, during the washing process, the main controller receives the feedback value of the pressure sensor 412, and when the feedback value of the pressure sensor 412 is within the set pressure range, the set minimum pressure value is F1, the set maximum pressure value is F2, the feedback value of the pressure sensor 412 is between F1 and F2, and the driving device 43 does not operate; when the feedback value of the pressure sensor 412 is greater than F2, determining the distance that the pressure plate 41 needs to move upwards according to the difference between the feedback value of the pressure sensor 412 and F2, and converting the distance to the number of turns that the screw rod 431 needs to rotate; the main control board then signals the drive device 43 to move several turns so that the platen 41 moves upward by the determined distance; when the feedback value of the pressure sensor 412 is smaller than F1, the distance that the pressure plate 41 needs to move downwards is judged according to the difference value between the feedback value of the pressure sensor 412 and F1, and then the distance is converted into the number of turns that the screw rod 431 needs to rotate; the main control board then signals the drive means 43 to move several revolutions so that the platen 41 moves down the determined distance.

Before step S10, a program judgment or selection step S9 is further performed, and the anti-floating program is entered; the user can manually select the anti-floating program, and the user selects the anti-floating program according to the type of the washed clothes, such as down jackets, mountaineering jackets, outdoor jacket and the like. The washing machine can also be provided with a camera device for scanning and photographing the clothes to be washed, and the anti-floating program can be automatically selected by scanning and identifying the easily floating clothes.

EXAMPLE III

Referring to fig. 7, which is a flowchart illustrating a second anti-floating control method of the washing machine, the washing machine 100 includes: the washing machine comprises a box body 10, an upper cover 20, a washing barrel 30, a pressure plate assembly 40 and a control panel seat 50 positioned above the box body 10, wherein a clothes inlet is formed on the control panel seat 50; the upper cover 20 is hinged on the control panel seat 50, and the upper cover 20 is used for opening or closing the clothes input opening. The washing tub 30 is located in the cabinet 10, the pressing plate assembly 40 is telescopically arranged on the upper cover 20, and the pressing plate assembly 40 is used for pressing the easily floating clothes; the pressing plate assembly 40 has a pressing plate 41 at a lower end, a telescopic frame 42 connected between the pressing plate 41 and the upper cover 20, and a driving device 43 for driving the telescopic frame 42 to be telescopic. A pressure sensor 412 is provided on the pressure plate 41, and an imaging device for irradiating the inside of the washing tub 30 is provided on the washing machine.

specifically, for the determination of the inlet water level N1, the inlet water level may be determined in a load-bearing manner; or the user manually selects the intake water level, etc. In the process of injecting water into the washing tub 30, the easily floatable laundry floats on the water surface; the floating degree of the clothes can be influenced by different specific fillers of the easily floating clothes, different filling amounts, different fabric materials, different tailoring modes, the new and old degree of the clothes and the like, namely different easily floating clothes, and the actual floating capacity is different. In order to more accurately control the clothes according to different floating forces and ensure the washing effect; in this step, the height H1 at which the laundry in the washing tub floats on the water surface is determined by the imaging device, and the higher the value of the height H1, the stronger the floating ability of the laundry is.

S30, in the washing process, the feedback value of the pressure sensor 412 is in a set pressure range by adjusting the height of the pressure plate 41; when the height H1 is greater than the set height H0, the set pressure range is adjusted.

Specifically, the higher the value of the height H1, the stronger the floating ability of the laundry is, that is, the greater the pressure applied to the adjustment pressing plate 41, so that in order to make the pressing plate 41 at a proper height during the washing process, the set pressure range needs to be adjusted according to the value of the height H1.

Setting a minimum pressure value to be F1 and a maximum pressure value to be F2; when the height H1 is greater than the set height H0, indicating that the floating capacity of the laundry is greater, the pressure applied to the adjusting presser 41 is greater; therefore, the set pressure range is adjusted according to the height H1 of the clothes floating out of the water surface; that is, the set minimum pressure value is adjusted to be F1+ F3, the set maximum pressure value is adjusted to be F2+ F4, the value of F3 is determined according to the height difference between the height H1 and the set height H0, and the value of F4 is determined according to the height difference between the height H1 and the set height H0;

during the washing process, the master controller receives the feedback value of the pressure sensor 412, and when the feedback value of the pressure sensor 412 is within the adjustment pressure range, the feedback value of the pressure sensor 412 is between F1+ F3 and F2+ F4, and the driving device 43 does not operate; when the feedback value of the pressure sensor 412 is greater than F2+ F4, the distance that the pressure plate 41 needs to move upwards is judged according to the difference between the feedback value of the pressure sensor 412 and F2+ F4, and then the distance is converted into the number of turns that the screw rod 431 needs to rotate; the main control board then signals the drive device 43 to move several turns so that the platen 41 moves upward by the determined distance; when the feedback value of the pressure sensor 412 is smaller than F1+ F3, the distance that the pressure plate 41 needs to move downwards is judged according to the difference value between the feedback value of the pressure sensor 412 and F1+ F3, and then the distance is converted into the number of turns that the screw rod 431 needs to rotate; the main control board then signals the drive means 43 to move several revolutions so that the platen 41 moves down the determined distance.

Example four

Referring to fig. 7, which is a flowchart illustrating a third anti-floating control method of the washing machine, the washing machine 100 includes: the washing machine comprises a box body 10, an upper cover 20, a washing barrel 30, a pressure plate assembly 40 and a control panel seat 50 positioned above the box body 10, wherein a clothes inlet is formed on the control panel seat 50; the upper cover 20 is hinged on the control panel seat 50, and the upper cover 20 is used for opening or closing the clothes input opening. The washing tub 30 is located in the cabinet 10, the pressing plate assembly 40 is telescopically arranged on the upper cover 20, and the pressing plate assembly 40 is used for pressing the easily floating clothes; the pressing plate assembly 40 has a pressing plate 41 at a lower end, a telescopic frame 42 connected between the pressing plate 41 and the upper cover 20, and a driving device 43 for driving the telescopic frame 42 to be telescopic. A pressure sensor 412 is provided on the pressure plate 41, and an imaging device for irradiating the inside of the washing tub 30 is provided on the washing machine.

S20, the driving device 43 is operated, the pressure plate 41 moves downwards and extends, and the extending distance L1 of the pressure plate 41 is determined according to the water inlet level N1 and the height H1 of the clothes floating out of the water.

Specifically, an action instruction is given to the driving device 43, and the driving device 43 drives the telescopic frame 42 to extend out, so that the pressing plate 41 moves downwards; the extending distance L1 of the pressure plate 41 is determined according to the inlet water level N1 and the height H1 of the clothes floating out of the water, and the lower the inlet water level N1 is, the larger the extending distance L1 of the pressure plate 41 is; the lower the height H1 at which the laundry floats on the water surface, the greater the protrusion distance L1 of the pressing plate 41.

EXAMPLE five

Referring to fig. 8, which is a flowchart illustrating a fourth anti-floating control method of the washing machine, the washing machine 100 includes: the washing machine comprises a box body 10, an upper cover 20, a washing barrel 30, a pressure plate assembly 40 and a control panel seat 50 positioned above the box body 10, wherein a clothes inlet is formed on the control panel seat 50; the upper cover 20 is hinged on the control panel seat 50, and the upper cover 20 is used for opening or closing the clothes input opening. The washing tub 30 is located in the cabinet 10, the pressing plate assembly 40 is telescopically arranged on the upper cover 20, and the pressing plate assembly 40 is used for pressing the easily floating clothes; the pressing plate assembly 40 has a pressing plate 41 at a lower end, a telescopic frame 42 connected between the pressing plate 41 and the upper cover 20, and a driving device 43 for driving the telescopic frame 42 to be telescopic. The pressure sensor 412 is provided on the pressure plate 41.

S40, when the washing machine carries out rinsing, the extension distance L2 of the pressure plate 41 is L2< L1, and during rinsing, the driving assembly 43 drives the pressure plate 41 to move up and down between the extension distances L2 and L1.

Specifically, in order to set the pressing plate 41 to move up and down between the protrusion distances L2 and L1 during the rinsing process, the laundry has a large overturning space in a state where the pressing plate 41 is at the protrusion distance L2; when the pressing plate 41 is in the state of extending the distance L1, the laundry is washed by the washing water, which is beneficial to improving the cleaning rate of rinsing. It is preferable that the pressing plate 41 is disposed in a state where the pressing plate 41 is protruded by a distance L2, and a lower end surface of the pressing plate 41 is higher than a liquid level in the washing tub 30.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A washing machine having a platen assembly, comprising:

a box body;

the upper cover is hinged;

a washing tub located in the cabinet;

2. A washing machine as claimed in claim 1 wherein the telescopic frame has a first hinge frame and a second hinge frame formed by a plurality of hinge units hinged end to end in sequence, the hinge unit on the first hinge frame being hinged at the middle with the corresponding hinge unit on the second hinge frame.

3. The washing machine as claimed in claim 2, wherein an upper mounting seat is fixedly provided on the upper cover, an upper end of the first hinge bracket is hinged to the upper cover, and an upper end of the second hinge bracket is movably provided on the upper mounting seat.

4. The washing machine as claimed in claim 3, wherein a first hinge shaft is provided at an upper end of the second hinge frame, a lead screw is connected to an output shaft of the driving device, a nut pair matched with the lead screw is provided on the first hinge shaft, and the driving device can drive the first hinge shaft to move.

5. The washing machine as claimed in claim 4, wherein the first hinge shaft has a limit extending part extending outwardly beyond the second hinge bracket, and a limit groove for receiving the limit extending part is opened on the upper mounting seat, and the limit extending part is movably located in the limit groove.

6. The washing machine as claimed in claim 5, wherein the limit extending part is provided with an extending shaft and a limit wheel sleeved outside the extending shaft, the limit wheel is rollably positioned in the limit groove, the limit groove is provided with a containing groove matched with the limit wheel and a communicating groove matched with the extending shaft and communicated with the containing groove, and the height of the communicating groove is smaller than that of the containing groove.

7. An anti-floating control method of a washing machine according to any one of claims 1 to 6, wherein a pressure sensor is provided on the pressure plate, comprising the steps of:

8. The anti-floating control method according to claim 7, wherein an image pickup device for irradiating the inside of the washing tub is provided in the washing machine, and in step S10, the image pickup device determines a height H1 at which the laundry in the washing tub floats on the water surface.

9. The anti-floating control method according to claim 8, wherein when the height H1 at which the clothes float out of the water is greater than the set height H0, the pressure range set in step S30 is adjusted.

10. The anti-floating control method according to any one of claims 7 to 9, further comprising a step S40. the pressing plate is extended by a distance L2 when the washing machine is used for rinsing, wherein L2< L1, and the driving assembly drives the pressing plate to move up and down between the extended distances L2 and L1 during rinsing.