Washing machine with pressure wash function

Abstract

The present invention discloses a washing machine with a pressure washing function, which belongs to the technical field of washing machines and solves the problems that clothes are easily entangled and worn under the conventional washing function of existing washing machines. The washing machine with a pressure washing function of the present invention comprises a washing tub and a pulsator arranged at the bottom of the washing tub, and the washing machine also comprises a first washing plate and a transmission shaft, wherein the first washing plate is mounted on the transmission shaft, and the transmission shaft is driven to rotate by the pulsator, and the rotation of the transmission shaft causes the first washing plate to move up and down in the washing tub. During the washing process, the first washing plate moves up and down in the washing tub, and cyclically squeezes the clothes in the washing tub. The clothes are repeatedly squeezed by the first washing plate while rotating with the water flow, which can not only improve the entanglement and pulling phenomenon between clothes, but also improve the washing degree of clothes.

Description

[Technical field]

[0001] The invention relates to a clothing processing device, in particular to a washing machine with a pressure washing function. [Background technology]

[0002] The pulsator washing machine in the prior art has an outer barrel for storing washing water, an inner barrel rotatably installed in the outer barrel for accommodating clothes, and a pulsator installed at the bottom of the inner barrel for generating vortexes. During the washing process, the pulsator rotates to generate vortexes in the inner barrel, and the clothes roll along with the water flow generated by the rotation of the pulsator. The rolling water flow causes the laundry to roll and rub against each other, and at the same time, the rolling laundry generates a certain amount of friction with the inner barrel wall of the washing machine to be washed. However, the conventional washing function easily causes the clothes to entangle and pull each other, causing the clothes to wear, and some clothes are easy to float on the water surface, which cannot achieve the expected washing effect. [Summary of the invention]

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and propose a washing machine with a pressure washing function, which reduces damage to clothes and improves the cleanliness of clothes by means of repeated pressure washing of a washing plate.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A washing machine with a pressure washing function comprises a washing tub and a pulsator arranged at the bottom of the washing tub. The washing machine also comprises a first washing plate and a transmission shaft. The first washing plate is mounted on the transmission shaft. The transmission shaft is driven to rotate by the pulsator. The rotational movement of the transmission shaft causes the first washing plate to move up and down in the washing tub.

[0006] In the above-mentioned washing machine with pressure washing function, the transmission shaft is detachably connected to the pulsator.

[0007] In the above-mentioned washing machine with pressure washing function, a connecting seat is provided at the center of the impeller, a mounting seat is provided at one end of the transmission shaft, one of the connecting seat and the mounting seat is provided with a screw-in groove, and the other is provided with a screw-in rib that cooperates with the screw-in groove, and the connecting seat and the mounting seat are fitted onto each other and can be rotatably engaged.

[0008] In the above-mentioned washing machine with pressure washing function, an elastic retaining member is provided in the connecting seat or the mounting seat, and the elastic retaining member provides an elastic retaining force to the transmission shaft for limiting the screwing rib in the screwing groove.

[0009] In the above-mentioned washing machine with pressure washing function, the washing machine further comprises a second washing plate arranged opposite to the first washing plate, and a washing space with variable height is formed between the first washing plate and the second washing plate.

[0010] In the above washing machine with pressure washing function, the second washing plate is configured as a foldable plate that can be folded at least once, and / or the first washing plate is configured as a foldable plate that can be folded at least once.

[0011] In the above-mentioned washing machine with pressure washing function, a second mounting hole is provided at the center of the second washing plate, the transmission shaft passes through the second mounting hole, and a limiting pin for connecting the second washing plate or the transmission shaft is provided.

[0012] In the above-mentioned washing machine with pressure washing function, a first mounting hole is provided at the center of the first washing plate, the first mounting hole is threadedly matched with the transmission shaft, and the first washing plate performs lifting and lowering motion on the transmission shaft.

[0013] In the above-mentioned washing machine with pressure washing function, the first washing plate is clearance-matched with the side wall of the washing tub, and the washing tub limits the circumferential rotation of the first washing plate.

[0014] In the above-mentioned washing machine with pressure washing function, a retractable protective cover is provided outside the transmission shaft.

[0015] Beneficial effects of the present invention:

[0016] The washing machine with pressure washing function of the present invention comprises a washing tub and a pulsator arranged at the bottom of the washing tub, the washing machine also comprises a first washing plate and a transmission shaft, the first washing plate is mounted on the transmission shaft, the transmission shaft is driven to rotate by the pulsator, and the rotational movement of the transmission shaft causes the first washing plate to move up and down in the washing tub.

[0017] According to the above scheme of the present invention, a washing method is realized: after the clothes are put into the washing tub, the first washing plate covers the clothes. During the washing process, the first washing plate moves up and down in the washing tub to circulate and squeeze the clothes in the washing tub. When the first washing plate rises, the clothes absorb the washing water. When the first washing plate descends, the clothes are squeezed and the washing water in the clothes is squeezed out. This cycle continues. The rotation of the washing water and the lifting and lowering movement of the first washing plate cooperate to achieve a pressure washing effect. The clothes are repeatedly squeezed by the first washing plate while rotating with the water flow, which can not only improve the entanglement and pulling phenomenon between the clothes, but also improve the cleanliness of the clothes. Since the first washing plate covers the clothes, the clothes that are easy to float are restricted by the first washing plate so that they are more exposed to the washing water and are more fully washed through the friction with the first washing plate.

[0018] In the present invention, the rotational power source of the first washing plate is provided by the impeller, and there is no need to separately configure a driving component to realize the pressure washing function, thereby reducing the implementation cost; the operation of the impeller is controlled by the washing program, and since the impeller drives the first washing plate to rise and fall through the transmission shaft, the movement of the first washing plate, such as the lifting frequency and lifting amplitude of the first washing plate, is indirectly controlled, so that a more stable pressure washing effect can be obtained.

[0019] In the present invention, the transmission shaft is not only used to transmit the impeller power to the first wash plate, but also plays a guiding role in the lifting process of the first wash plate, reducing the influence of water flow pressure on the first wash plate, and realizing smooth lifting of the first wash plate.

[0020] In a further solution, the transmission shaft is detachably connected to the impeller. When the pressure washing function is not needed, the transmission shaft can be removed and the washing bucket can be taken out, without occupying the internal space of the washing bucket.

[0021] In a further solution, a connecting seat is provided at the center of the impeller, a mounting seat is provided at one end of the transmission shaft, one of the connecting seat and the mounting seat is provided with a screwing groove, and the other is provided with a screwing rib matched with the screwing groove, and the connecting seat and the mounting seat are fitted on each other and can be rotatably engaged. The transmission shaft can be easily disassembled and assembled, and the user is easy to use.

[0022] In a further solution, an elastic retainer is provided in the connecting seat or the mounting seat, and the elastic retainer provides an elastic retaining force to the transmission shaft, so as to limit the screwing rib in the screwing groove, thereby enhancing the connection reliability between the connecting seat and the mounting seat and preventing the mounting seat from loosening during the pressure washing process.

[0023] In a further solution, the washing machine further comprises a second washing plate arranged opposite to the first washing plate, and a washing space with a variable height is formed between the first washing plate and the second washing plate. Another washing method implemented by the above solution is that the clothes are pressure washed in the washing space defined by the first washing plate and the second washing plate, so that the clothes do not directly contact the pulsator during the washing process, thereby reducing the wear on the clothes, and is particularly suitable for washing high-end clothes such as silk and wool.

[0024] In a further embodiment, the second washing plate is configured as a foldable plate that can be folded at least once, and / or the first washing plate is configured as a foldable plate that can be folded at least once. The foldable design allows the user to conveniently take the first washing plate and the second washing plate from the washing bucket, and can also reduce the volume of the first washing plate and the second washing plate for easy storage.

[0025] In a further solution, a second mounting hole is provided at the center of the second washing plate, the transmission shaft passes through the second mounting hole, and a stop pin for connecting the second washing plate or the transmission shaft is provided. The second washing plate and the transmission shaft can be assembled and disassembled as a component, which is more convenient to use and store.

[0026] In a further solution, a first mounting hole is provided at the center of the first washing plate, the first mounting hole is threadedly matched with the transmission shaft, and the first washing plate performs lifting motion on the transmission shaft. The rotational motion of the impeller is converted into the lifting motion of the first washing plate by threaded transmission, and the transmission structure is simple, the transmission is stable, and the noise is low.

[0027] In a further solution, the first washing plate is fitted with a clearance between the side wall of the washing tub, and the washing tub limits the circumferential rotation of the first washing plate. Based on the threaded transmission mode, limiting the circumferential rotation of the first washing plate can ensure transmission efficiency.

[0028] In a further solution, a retractable protective cover is arranged outside the transmission shaft. During the pressure washing process, the protective cover retracts and contracts with the lifting and lowering movement of the first washing plate to prevent the clothes from directly contacting the transmission shaft and causing damage.

[0029] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0030] The present invention will be further described below in conjunction with the accompanying drawings:

[0031] Figure 1 This is a schematic diagram of a first state of a washing machine implementing a pressure washing function in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of a second state of the washing machine realizing the pressure washing function in an embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the transmission shaft in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the impeller connecting seat in an embodiment of the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the transmission shaft mounting seat in an embodiment of the present invention;

[0036] Figure 6 The structure diagram of the connecting seat and the mounting seat when rotating and engaging in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0037] Figure 7 The structure diagram of the connecting seat and the mounting seat when rotating and engaging in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0038] Figure 8 This is a schematic diagram of the structure of the first washing plate in the use state according to an embodiment of the present invention;

[0039] Fig. 9 This is a schematic diagram of the structure of the first washing plate at the first mounting hole in an embodiment of the present invention;

[0040] Fig.10 This is a schematic structural diagram of a first washing plate in a folded state according to an embodiment of the present invention;

[0041] Fig.11 This is a schematic diagram of the structure of the second washing plate in the use state in an embodiment of the present invention;

[0042] Fig.12 is a schematic structural diagram of the second washing plate in a folded state according to an embodiment of the present invention;

[0043] Fig.13 This is a schematic diagram of the structure of the connection between the second washing plate and the transmission shaft in an embodiment of the present invention;

[0044] Fig.14 Schematic diagram of the installation of the first washing plate and the second washing plate in the washing barrel according to the embodiment of the present invention

[0045] Fig.15 Schematic diagram of the connection between the second washing plate and the plug plate in an embodiment of the present invention;

[0046] Fig.16 This is a schematic diagram of installing a protective sleeve on a transmission shaft in an embodiment of the present invention;

[0047] Fig.17 This is a schematic diagram of the structure of the connection between the protective cover and the first washing plate in an embodiment of the present invention;

[0048] Fig.18 Schematic diagram of the installation of the first washing plate and the second washing plate on the transmission shaft in an embodiment of the present invention.

[0049] Reference numerals:

[0050] 100 washing bucket, 110 plug board, 111 snap slot;

[0051] 200 first washing plate, 210 first semicircular plate, 211 avoidance notch, 220 limiting notch, 230 sleeve, 240 first mounting hole, 241 internal thread, 250 second magnetic attraction member;

[0052] 300 second washing plate, 310 second semicircular plate, 311 semicircular groove, 320 second mounting hole, 330 limiting pin, 340 elastic buckle;

[0053] 400 impeller, 410 connecting seat, 420 screwing groove, 421 first guide section, 422 second guide section, 423 limiting section;

[0054] 500 transmission shaft, 510 external thread, 520 mounting seat, 521 assembly hole, 522 screw-in rib, 530 elastic retainer, 531 elastic element, 532 pressure plate, 540 annular groove;

[0055] 600 protective cover, 610 first magnetic attraction component. [Specific implementation method]

[0056] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] Reference Figure 1 , 2 The washing machine with pressure washing function proposed in an embodiment of the present invention includes a washing tub 100 and a pulsator 400 arranged at the bottom of the washing tub 100. The washing machine also includes a first washing plate 200, a second washing plate 300 and a transmission shaft 500. The first washing plate 200 is installed on the transmission shaft 500, and the transmission shaft 500 is driven to rotate by the pulsator 400. The rotation of the transmission shaft 500 causes the first washing plate 200 to move up and down in the washing tub 100. The second washing plate 300 is located below the first washing plate 200, and a washing space with variable height is formed between the first washing plate 200 and the second washing plate 300.

[0062] The washing machine described in the embodiment of the present invention is a pulsator washing machine, which generally includes a machine body, a water tub located in the machine body, and a water inlet mechanism for filling water into the washing tub, etc. The washing tub is arranged in the water tub. Although not described in conjunction with the drawings, the above components and other components of the pulsator washing machine are already in the prior art and will not be described in detail here.

[0063] Preferably, the second washing plate 300 is fixedly arranged at the bottom of the washing tub 100 and above the pulsator 400, and the lifting movement of the first washing plate 200 in the washing tub 100 changes the relative distance between the first washing plate 200 and the second washing plate 300, that is, a washing space with variable height is formed. It should be noted that: a plurality of water permeable holes are arranged on the first washing plate 200 and the second washing plate 300, and the washing water enters or is discharged from the washing space between the two through the water permeable holes.

[0064] Based on the above embodiment of the present invention, the washing machine has a washing method: first, the second washing plate 300 is loaded into the washing tub 100, and the clothes are placed on the second washing plate 300 after being put into the washing tub 100, and then the first washing plate 200 is installed on the transmission shaft 500; during the washing process, the first washing plate 200 performs a lifting movement in the washing tub 100, and cooperates with the second washing plate 300 to cyclically squeeze the clothes in the washing tub 100, and when the first washing plate 200 rises (such as Figure 1As shown in FIG. 2 ), the laundry absorbs the washing water, and the first washing plate 200 is pressed when descending (as shown in FIG. 2 ). Figure 2 As shown in the figure, the washing water in the clothes is squeezed out, and the cycle continues. The rotation of the washing water and the lifting and lowering of the first washing plate 200 cooperate to achieve a pressure washing effect. The clothes are repeatedly squeezed by the first washing plate 200 while rotating with the water flow, which can not only improve the entanglement and pulling phenomenon between the clothes, but also improve the cleanliness of the clothes; because the first washing plate 200 covers the clothes, the clothes that are easy to float are restricted by the first washing plate 200 so that they are more exposed to the washing water and are more fully washed through friction with the first washing plate 200.

[0065] In the above pressure washing process, since the second washing plate 300 separates the clothes from the pulsator 400, the clothes do not directly contact the pulsator 400, thereby reducing the wear on the clothes. This is particularly suitable for washing high-end clothes such as silk and wool.

[0066] In the above-mentioned embodiment of the present invention, the rotation source power of the first washing plate 200 is provided by the impeller 400, and there is no need to separately configure a driving component to realize the pressure washing function, thereby reducing the implementation cost; the operation of the impeller 400 is controlled by the washing program, and since the impeller 400 drives the first washing plate 200 to rise and fall through the transmission shaft 500, it indirectly controls the movement of the first washing plate 200, such as the lifting frequency and lifting amplitude of the first washing plate 200, so that a more stable pressure washing effect can be obtained.

[0067] In the above embodiment of the present invention, the transmission shaft 500 is not only used to transmit the power of the impeller 400 to the first wash plate 200, but also plays a guiding role in the lifting and lowering process of the first wash plate 200, thereby reducing the influence of the water flow pressure on the first wash plate 200 and realizing the smooth lifting and lowering of the first wash plate 200.

[0068] The first washing plate 200, the second washing plate 300 and the transmission shaft 500 in the embodiment of the present invention are described in detail below:

[0069] Reference Figure 3 , 9 In a preferred embodiment of the present invention, a first mounting hole 240 is provided at the center of the first washing plate 200. The first mounting hole 240 is threadedly matched with the transmission shaft 500, and the first washing plate 200 performs lifting motion on the transmission shaft 500.

[0070] In specific implementation, a sleeve 230 for forming a first mounting hole 240 is arranged at the center of the first washing plate 200, an internal thread 241 is arranged on the hole wall of the first mounting hole 240, an external thread 510 is arranged on the outer wall of the transmission shaft 500, and the internal thread 241 and the external thread 510 cooperate to realize thread transmission. The rotational motion of the impeller 400 is converted into the lifting motion of the first washing plate 200 by thread transmission, and the transmission structure is simple, the transmission is stable, and the noise is low. In actual use, the upper end of the transmission shaft 500 can be inserted into the first mounting hole 240 of the first washing plate 200, and the internal thread 241 and the external thread 510 can be automatically screwed together by the rotation of the transmission shaft 500.

[0071] Reference Figure 8 , 14 More preferably, the first washing plate 200 is matched with the clearance of the side wall of the washing barrel 100, and the washing barrel 100 limits the circumferential rotation of the first washing plate 200. For example, the side wall of the washing barrel 100 has a plurality of plug-ins 110 distributed circumferentially, and the outer periphery of the first washing plate 200 has a limiting notch 220 that matches the plug-in plate 110. After the first washing plate 200 is placed in the washing barrel 100, the limiting notch 220 corresponds to the plug-in plate 110 one by one, and the plug-in plate 110 limits the circumferential rotation of the first washing plate 200, thereby ensuring the transmission efficiency of the threaded transmission. Moreover, since the first washing plate 200 is matched with the clearance of the side wall of the washing barrel 100, a suitable operating space is provided for the user, which is convenient for taking and placing the first washing plate 200 in the washing barrel 100.

[0072] Reference Fig.16 In a preferred embodiment of the present invention, a retractable protective cover 600 is provided outside the transmission shaft 500. During the pressure washing process, the protective cover 600 is retracted and extended along with the lifting and lowering movement of the first washing plate 200 to prevent the clothes from directly contacting the transmission shaft 500 and causing damage. For example, in the transmission shaft 500 with external threads 510 in the above embodiment, the setting of the protective cover 600 can prevent the clothes from being entangled with the external threads 510 on the transmission shaft 500 and causing damage, and can also prevent the external threads 510 from depositing too much lint and wire scraps and affecting the transmission effect. In practical applications, the protective cover 600 can be selected from a rubber bellows or a retractable tube formed by slidingly connecting multiple pipes.

[0073] Reference Fig.17In the above preferred embodiment, the upper end of the protective cover 600 is provided with a first magnetic member 610, and the first washing plate 200 is provided with a second magnetic member 250 correspondingly. The first magnetic member 610 and the second magnetic member 250 are attracted by magnetic force, so that the upper end of the protective cover 600 is positioned on the first washing plate 200. When the first washing plate 200 is raised or lowered, the protective cover 600 is driven to expand and contract. Combined with the expansion and contraction performance of the protective cover 600 itself, it is ensured that the part of the transmission shaft 500 between the first washing plate 200 and the second washing plate 300 will not be exposed, and at the same time, the protective cover 600 is installed outside the transmission shaft 500 more stably without causing a large shake. Among them, the first magnetic member 610 and the second magnetic member 250 can be a combination of ferromagnetic metal and magnets, or magnets that attract each other in pairs.

[0074] Of course, the lower end of the protective cover 600 and the second washing plate 300 can also be positioned by the magnetic attraction method mentioned above.

[0075] Reference Figure 8-10 In a preferred embodiment of the present invention, the first washing plate 200 is configured as a foldable plate that can be folded at least once. For example, the first washing plate 200 is formed by hingedly connecting two first semicircular plates 210. The first washing plate 200 can be folded in half. Fig.10 In the state shown, this foldable design, on the one hand, allows the user to conveniently take the first washing plate 200 from the washing bucket 100, and on the other hand, can reduce the volume of the first washing plate 200 for easy storage. Since the center of the first washing plate 200 is provided with a sleeve 230, in order not to affect the folding, a avoidance notch 211 is provided on one of the first semicircular plates 210 near the sleeve 230, so that when the first washing plate 200 is folded, the first semicircular plate 210 will not be interfered by the sleeve 230.

[0076] According to the design concept of the above embodiment, those skilled in the art can imagine that: the first washing plate 200 can also be configured as a folding structure such as double folding, triple folding, etc.

[0077] In a preferred embodiment of the present invention, the transmission shaft 500 is detachably connected to the pulsator 400. When the pressure washing function is not needed, the transmission shaft 500 can be removed and the washing tub 100 can be taken out without occupying the internal space of the washing tub 100.

[0078] Reference Figure 3-5Preferably, the center of the impeller 400 has a connection seat 410 protruding upward, one end of the transmission shaft 500 is provided with a mounting seat 520, the outer peripheral wall of the connection seat 410 is provided with a screwing groove 420, and the mounting seat 520 is provided with an assembly hole 521 that can accommodate the connection seat 410, and the wall of the assembly hole 521 is provided with a screwing rib 522. When installing the transmission shaft 500, the mounting seat 520 is sleeved on the connection seat 410, and the screwing rib 522 enters the screwing groove 420 from the opening of the screwing groove 420. The mounting seat 520 is rotated to make it rotate and engage with the connection seat 410. When disassembling the transmission shaft 500, the transmission shaft 500 is rotated in the opposite direction and lifted upward. The disassembly and assembly operation is simple and easy for users to use.

[0079] According to the design concept of the above embodiment, those skilled in the art can imagine that the screwing groove and the screwing rib can be interchanged, that is, the screwing rib is provided on the outer peripheral wall of the connecting seat, and the screwing groove is provided on the wall of the assembly hole of the mounting seat.

[0080] According to the design concept of the above embodiment, those skilled in the art can imagine that: the center of the impeller is recessed downward to form a hole-shaped connecting seat, and the mounting seat is inserted into the connecting seat for rotational engagement.

[0081] Combination Figure 6 , 7 More preferably, an elastic retaining member 530 is provided in the mounting seat 520, and the elastic retaining member 530 provides an elastic retaining force to the transmission shaft 500, so as to limit the screw-in rib 522 in the screw-in groove 420. The connection reliability between the connecting seat 410 and the mounting seat 520 is enhanced to prevent the mounting seat 520 from loosening during the pressure washing process. Taking the above scheme as an example, the screw-in groove 420 includes a first guide section 421 extending downward from the upper end of the connecting seat 410, a second guide section 422 extending circumferentially from the lower end of the first guide section 421, and a limiting section 423 extending upward from the second guide section 422. The first guide section 421, the second guide section 422 and the limiting section 423 are connected to form a roughly U-shaped screw-in groove 420. During the rotational engagement of the connection seat 410 and the mounting seat 520, the screwing rib 522 moves along the first guide section 421 and the second guide section 422 to below the limit section 423. At this time, the transmission shaft 500 moves upward under the action of the elastic retaining force, so that the screwing rib 522 enters the limit section 423. The connection seat 410 and the mounting seat 520 are limited in the circumferential direction and cannot rotate relative to each other, thereby ensuring the reliability of the connection between the two during the washing process. When disassembling the transmission shaft 500, first press down the transmission shaft 500 to make the screwing rib 522 exit the limit section 423, and then rotate the transmission shaft 500 in the opposite direction.

[0082] The elastic retainer 530 in the above preferred solution includes an elastic element 531 and a pressure plate 532. One end of the elastic element 531 is positioned at the bottom of the assembly hole 521, and the other end is connected to the pressure plate 532. After the connection seat 410 is inserted into the assembly hole 521, the pressure plate 532 and the connection seat 410 are abutted against each other. The elastic force released after the elastic element 531 is compressed makes the transmission shaft 500 maintain an upward movement trend, ensuring that the screwing rib 522 can be locked in the limit section 423. Among them, the elastic element 531 can be a spring, an elastic pad, an elastic airbag, etc., preferably a compression spring is used, which is easy to install and low in cost.

[0083] Reference Figure 11-13 In a preferred embodiment of the present invention, a second mounting hole 320 is provided at the center of the second washing plate 300, the transmission shaft 500 passes through the second mounting hole 320, and a limit pin 330 for connecting the two is provided on the second washing plate 300. The second washing plate 300 and the transmission shaft 500 can be disassembled and assembled as a component, which is more convenient to use and store. Specifically: the second washing plate 300 is provided with elastically retractable or slidable limit pins 330 in pairs, and the portion of the transmission shaft 500 that passes through the second mounting hole 320 is provided with an annular groove 540, and the limit pin 330 is inserted into the annular groove 540 to realize the connection between the second washing plate 300 and the transmission shaft 500, but the second washing plate 300 can be circumferentially rotated relative to the transmission shaft 500 before being fixed, so as to adjust the installation position of the second washing plate 300 in the washing barrel 100.

[0084] Preferably, the second washing plate 300 is configured as a foldable plate that can be folded at least once. For example, the second washing plate 300 is formed by two second semicircular plates 310 being hingedly connected. The second washing plate 300 can be folded in half to form a Fig.12 In the state shown, this foldable design, on the one hand, enables the user to conveniently take the second washing plate 300 out of the washing tub 100 , and on the other hand, can reduce the volume of the second washing plate 300 for easy storage.

[0085] According to the design concept of the above embodiment, those skilled in the art can imagine that the second washing plate can also be configured as a folding structure such as a double folding structure or a triple folding structure.

[0086] Reference Fig.11 , 12 More preferably, a semicircular groove 311 is provided along the radial direction on each of the two second semicircular plates 310 of the second washing plate 300. When the second washing plate 300 is folded in half, the two semicircular grooves 311 contain the transmission shaft 500 (except the mounting seat 520 at the bottom of the transmission shaft 500), which neither affects the folding of the second washing plate 300 nor protects the transmission shaft 500.

[0087] Reference Fig.14 , 15In a preferred embodiment of the present invention, the second washing plate 300 is fixed by snapping with the plug plate 110 on the side wall of the washing tub 100. Specifically, a plurality of elastic buckles 340 are arranged along the circumferential direction on the edge of the second washing plate 300, and a buckle groove 111 is correspondingly arranged on the plug plate 110. After the elastic buckle 340 is deformed, it is inserted into the buckle groove 111 to fix the second washing plate 300. The elastic buckle 340 is designed to be a U-shaped buckle with an upward opening. The U-shaped buckle has good elastic deformation ability and can provide users with a larger operating space. For example, when disassembling, the user's fingers can penetrate into the U-shaped buckle and apply force toward the center direction of the second washing plate 300 to make the U-shaped buckle disengage from the buckle groove 111.

[0088] Of course, the present invention is not limited to the above embodiments. According to the design concept of the present invention, those skilled in the art may think of exchanging the positions of the first washing plate 200 and the second washing plate 300. Fig.18 As shown, the second wash plate 300 is located above the first wash plate 200, and the first wash plate 200 is located above the impeller 400. The impeller drives the first wash plate 200 to move up and down in the washing barrel 100 through the transmission shaft 500 to change the relative distance between the first wash plate 200 and the second wash plate 300, thereby forming a washing space with variable height, which also has the technical effects of the above-mentioned embodiments.

[0089] Another washing method proposed by the present invention: only the first washing plate 200 can be set in the washing tub 100. After the clothes are put into the washing tub 100, the first washing plate 200 covers the clothes. During the washing process, the first washing plate 200 moves up and down in the washing tub 100 to circulate and squeeze the clothes in the washing tub 100. The rotation of the washing water and the lifting and lowering movement of the first washing plate 200 cooperate to achieve a pressure washing effect. This washing method is suitable for washing clothes with low washing requirements.

[0090] In the above-mentioned multiple embodiments, the number of the first washing plates is not limited to one. According to actual conditions, two, three or more first washing plates may be configured to achieve layered pressure washing.

[0091] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A washing machine with a pressure washing function, comprising a washing tub and a pulsator arranged at the bottom of the washing tub, characterized in that: The washing machine also includes a first washing plate and a transmission shaft, wherein the first washing plate is mounted on the transmission shaft, the transmission shaft is driven to rotate by the impeller, and the rotational movement of the transmission shaft causes the first washing plate to perform lifting and lowering movements in the washing tub, the transmission shaft is located in the washing tub and is respectively connected to the center of the first washing plate and the impeller, and the transmission shaft plays a guiding role in the lifting and lowering process of the first washing plate; the transmission shaft is detachably connected to the impeller; a connecting seat is provided at the center of the impeller, and a mounting seat is provided at one end of the transmission shaft, one of the connecting seat and the mounting seat is provided with a screw-on groove, and the other is provided with a screw-on rib that cooperates with the screw-on groove, the connecting seat and the mounting seat are fitted on each other and can be rotatably engaged; an elastic retainer is provided in the connecting seat or the mounting seat, and the elastic retainer provides an elastic retaining force to the transmission shaft for limiting the screw-on rib in the screw-on groove.

2. The washing machine with pressure washing function as claimed in claim 1, characterized in that: The washing machine further includes a second washing plate disposed opposite to the first washing plate, and a washing space with a variable height is formed between the first washing plate and the second washing plate.

3. The washing machine with pressure washing function as claimed in claim 2, characterized in that: The second wash plate is configured as a foldable plate capable of being folded at least once, and / or the first wash plate is configured as a foldable plate capable of being folded at least once.

4. The washing machine with pressure washing function as claimed in claim 2, characterized in that: A second mounting hole is provided at the center of the second washing plate, the transmission shaft passes through the second mounting hole, and a limiting pin for connecting the second washing plate or the transmission shaft is provided.

5. The washing machine with pressure washing function as claimed in claim 1, characterized in that: A first mounting hole is provided at the center of the first washing plate. The first mounting hole is threadedly matched with the transmission shaft. The first washing plate performs lifting motion on the transmission shaft.

6. The washing machine with pressure washing function as claimed in claim 5, characterized in that: The first washing plate is in clearance fit with the side wall of the washing tub, and the washing tub limits the circumferential rotation of the first washing plate.

7. The washing machine with pressure washing function as claimed in claim 1, characterized in that: A retractable protective cover is arranged outside the transmission shaft.

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