Roller washing machine

Abstract

The utility model provides a roller washing machine, and relates to the related technical field of household appliances. A drum washing machine includes: a cabinet including a bottom plate; the barrel assembly is arranged in the box body and located above the bottom plate; and the damping assembly is connected between the outer cylinder of the cylinder assembly and the bottom plate and is used for damping the cylinder assembly. The shock absorption assembly is arranged on the lower side of the outer cylinder, the two shock absorbers located on the left side are used for conducting shock absorption on the lower left side of the cylinder assembly, the two shock absorbers located on the right side are used for conducting shock absorption on the lower right side of the cylinder assembly, and after the dip angles of the shock absorbers on the left side and the right side are optimally designed, the shock absorbers on the left side and the right side are staggered to form a certain angle; and a nonlinear mounting angle is formed, so that the damping effect of the damping assembly on the cylinder assembly is better.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of household appliances, and particularly to a drum washing machine. BACKGROUND

[0002] At present, with the continuous improvement of people's living standards, the drum washing machine as a common household appliance has entered thousands of households and is increasingly favored by users. As a result, users' requirements for drum washing machines are gradually increasing.

[0003] However, no matter how manufacturers optimize the drum washing machine, it still has some defects. For example, although a damping component is arranged inside the drum washing machine to reduce the vibration and noise generated during the use of the drum washing machine, the vibration and noise problem still exists. This pain point has become a difficult problem for manufacturers to focus on. Therefore, in order to improve the user experience, it is urgently needed to provide a drum washing machine with better damping and noise reduction effect. CONTENT OF THE INVENTION

[0004] Therefore, the purpose of the present disclosure is to provide a washing machine to at least solve the technical problem of poor damping and noise reduction effect of the drum washing machine in the prior art.

[0005] To achieve at least one of the above purposes, the present disclosure provides the following technical solutions:

[0006] The present disclosure provides a drum washing machine, which comprises:

[0007] a box body comprising a bottom plate;

[0008] a drum assembly arranged inside the box body and above the bottom plate;

[0009] and a damping component connected between the outer drum of the drum assembly and the bottom plate for damping the drum assembly, the damping component comprising:

[0010] an outer drum damping support plate arranged below the outer drum peripheral wall;

[0011] a first damper, the lower end of which is connected to the left front part of the bottom plate, and the upper end of which extends towards the outer drum and is connected to the left front part of the outer drum damping support plate;

[0012] a second damper, the lower end of which is connected to the right front part of the bottom plate, and the upper end of which extends towards the outer drum and is connected to the right front part of the outer drum damping support plate;

[0013] A third shock absorber, a lower end of the third shock absorber being connected to the left rear portion of the bottom plate, an upper end of the third shock absorber extending towards the outer drum and being connected to the left rear portion of the outer drum damping support plate;

[0014] A fourth shock absorber, a lower end of the fourth shock absorber being connected to the right rear portion of the bottom plate, an upper end of the fourth shock absorber extending towards the outer drum and being connected to the right rear portion of the outer drum damping support plate.

[0015] In the above technical solution, the shock absorbers and the outer drum are indirectly fixed by arranging the outer drum damping support plate at the lower side of the outer drum. During the operation of the washing machine, the damping function of the shock absorbers and the elastic buffering effect of the outer drum damping support plate are utilized, thereby effectively reducing the vibration of the washing machine.

[0016] In some embodiments, the outer drum damping support plate comprises: a front support plate segment close to the front portion of the outer drum; a left support plate segment arranged at the lower left side of the outer peripheral wall of the outer drum, one end of the left support plate segment being connected to the front support plate segment and the other end extending towards the rear portion of the outer drum; and a right support plate segment arranged at the lower right side of the outer peripheral wall of the outer drum, one end of the right support plate segment being connected to the front support plate segment and the other end extending towards the rear portion of the outer drum.

[0017] The upper end of the first shock absorber is connected to the front portion of the left support plate segment, the upper end of the second shock absorber is connected to the front portion of the right support plate segment, the upper end of the third shock absorber is connected to the rear portion of the left support plate segment, and the upper end of the fourth shock absorber is connected to the rear portion of the right support plate segment.

[0018] In the above technical solution, the outer drum damping support plate is optimized to have a U-shaped structure, which not only ensures the effective support of the front portion and the left and right sides of the outer drum but also saves material costs. In addition, the middle empty part of the U-shaped structure can provide a space for other structural components of the outer drum (such as the outer drum drain hole connected to the outside), thereby ensuring the compactness of the overall structure of the washing machine.

[0019] In some embodiments, the outer drum damping support plate is made of sheet metal.

[0020] In the above technical solution, the sheet metal material has a certain elastic force and high yield strength, which can provide good support and damping effect for the outer drum.

[0021] In some embodiments, the first axis of the first shock absorber and the second axis of the second shock absorber intersect above the bottom plate, and the first shock absorber and the second shock absorber are coplanar in a plane perpendicular to the outer cylinder axis, the first axis forms an angle α1 with the vertical direction of the bottom plate surface, and the second axis forms an angle α2 with the vertical direction of the bottom plate surface; the third axis of the third shock absorber and the fourth axis of the fourth shock absorber intersect above the bottom plate, and the third shock absorber and the fourth shock absorber are coplanar in another plane perpendicular to the outer cylinder axis, the third axis forms an angle α3 with the vertical direction of the bottom plate surface, and the fourth axis forms an angle α4 with the vertical direction of the bottom plate surface; 23° < α1 < 26°, 19° < α2 < 21°, 19° < α3 < 21°, and 23° < α4 < 26°.

[0022] In the above technical solution, the shock absorbing assembly is arranged on the lower side of the outer cylinder, two shock absorbers on the left are used to absorb shock on the lower left side of the cylinder assembly, and two shock absorbers on the right are used to absorb shock on the lower right side of the cylinder assembly. By optimizing the inclination angles of the shock absorbers on the left and right sides, the shock absorbers on the left and right sides are staggered at certain angles to form nonlinear installation angles. Compared with the traditional method of symmetrically arranging four shock absorbers of the same type, when the inclination angle of the first shock absorber is equal to 23° or 26°, and the inclination angles of the first shock absorber and the fourth shock absorber are the same or similar, the inclination angle of the second shock absorber is equal to 19° or 21°, and the inclination angles of the second shock absorber and the third shock absorber are the same or similar, the shock absorbing effect is similar to that of the traditional washing machine. When the inclination angle of the first shock absorber is within the range of the embodiment, the shock absorbing effect of the shock absorbing assembly on the cylinder assembly is better than that of the traditional washing machine.

[0023] In some embodiments, the difference between α1 and α2 is in the range of 4°-6°, and the difference between α3 and α4 is in the range of 4°-6°.

[0024] In the above technical solution, by optimizing the angle difference of the shock absorbers on the front side and the rear side respectively, the angle difference between the two shock absorbers on the front side is kept at a predetermined angle difference, and the angle difference between the two shock absorbers on the rear side is also kept at a predetermined angle difference which is the same or similar to the former, which can further improve the shock absorbing effect of the shock absorbers on the cylinder assembly.

[0025] In some embodiments, the difference between α1 and α4 is not more than 2°, and the difference between α2 and α3 is not more than 2°.

[0026] In the technical solution, the relative angle between the first damper and the fourth damper with a large inclination angle is optimized, and the relative angle between the second damper and the third damper with a small inclination angle is optimized, so that the four dampers form a specific inclination angle, and the two dampers arranged on opposite corners of the bottom plate can generate a relatively symmetrical force in the corresponding diagonal direction of the outer cylinder, thereby forming a special damping structure and further improving the damping and noise reduction effect of the damping assembly on the cylinder assembly.

[0027] In some embodiments, the bottom plate is an integrated square plate structure.

[0028] The first damper and the third damper are installed on the left side of the bottom plate, and the second damper and the fourth damper are installed on the right side of the bottom plate.

[0029] In the technical solution, the bottom plate of the box body is designed in an integrated manner, and the bottom plate is designed in a large-scale profiling manner, thereby improving the stiffness and natural frequency and avoiding resonance of the bottom cover plate caused by the dampers. In addition, the integrated bottom plate of the drum washing machine can also avoid the direct transmission of internal noise of the box body to the external environment through the lower side, can play a noise isolation role, and effectively improves the user experience.

[0030] In some embodiments, the outer cylinder damping support plate is provided with a first fixing portion at the rear portion, and the first fixing portion is used to connect with the rear side plate of the box body through a first connecting piece.

[0031] In the technical solution, the outer cylinder damping support plate is connected with the rear side plate of the box body, which can further strengthen the connection between the box body and the cylinder assembly, and can also cooperate with the damping assembly to fix and damp the outer cylinder.

[0032] In some embodiments, the drum washing machine further comprises a first reinforcing plate arranged on the rear side plate of the box body and connected with the first fixing portion, and used to cooperate with the outer cylinder damping support plate to fix and damp the outer cylinder.

[0033] In the technical solution, the first reinforcing plate can further damp and reduce noise of the drum washing machine, and prevent cracking or deformation of the bolt hole of the outer cylinder and the box body caused by vibration of the cylinder assembly.

[0034] In some embodiments, the drum washing machine further comprises:

[0035] The outer cylinder reinforcing plate is arranged on the upper side of the outer cylinder and connected with the rear side plate of the box body, and is used to cooperate with the damping assembly to fix and damp the outer cylinder.

[0036] In the technical solution, the reinforcing plate is arranged on the upper side of the cylinder assembly to connect with the cabinet, which can reinforce the cylinder assembly in the cabinet and further reduce the vibration and noise of the drum washing machine.

[0037] In some embodiments, the rear side plate of the cabinet comprises: an upper and lower arranged rear cover plate and a second reinforcing plate;

[0038] The second reinforcing plate is connected with the upper reinforcing plate of the outer cylinder through a second connecting piece.

[0039] In the technical solution, the second reinforcing plate is connected with the upper reinforcing plate of the outer cylinder, which can reinforce the cylinder assembly in the cabinet and further reduce the vibration and noise of the drum washing machine. In addition, the rear side plate of the cabinet is designed to be composed of the second reinforcing plate and the rear cover plate, which not only enhances the anti-deformation ability of the upper part of the rear side plate of the cabinet, but also avoids the high cost problem caused by the use of the material of the rear side plate as a whole.

[0040] In some embodiments, a counterweight is arranged on the outer cylinder vibration reduction support plate.

[0041] The counterweight is detachably connected with the outer cylinder vibration reduction support plate and is used to cooperate with the vibration reduction assembly to reduce the vibration of the outer cylinder.

[0042] In the technical solution, the counterweight arranged on the outer cylinder vibration reduction support plate further reduces the vibration and noise of the drum washing machine, and the counterweight can also balance the cylinder assembly.

[0043] In some embodiments, the drum washing machine further comprises:

[0044] Four height-adjustable feet are arranged at the four top corners of the bottom plate respectively and correspond to the first shock absorber, the second shock absorber, the third shock absorber and the fourth shock absorber respectively.

[0045] In the technical solution, the height-adjustable feet cooperate with the corresponding shock absorbers to avoid the vibration of the cabinet caused by the force of the traditional suspension spring and reduce the vibration of the whole machine. The design method is better for reducing the vibration and noise of the drum washing machine. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0047] Figure 1Overall schematic diagram of a drum washing machine according to some embodiments of the present disclosure

[0048] Figure 2 Schematic diagram of internal structure of a drum washing machine according to some embodiments of the present disclosure Figure 1

[0049] Figure 3 Side view of assembly state of a drum assembly, a damping assembly and a bottom plate according to some embodiments of the present disclosure

[0050] Figure 4 Schematic diagram of internal structure of a drum washing machine according to some embodiments of the present disclosure Figure 2

[0051] Figure 5 Figure 4 Enlarged view of A part of the structure

[0052] Figure 6 Schematic diagram of connection state of a damping assembly with an outer drum damping support plate and a bottom plate respectively according to some embodiments of the present disclosure

[0053] Figure 7 Schematic diagram of inclined state of each damper according to some embodiments of the present disclosure

[0054] Figure 8 Schematic diagram of a bottom plate according to some embodiments of the present disclosure

[0055] Figure 9 Schematic diagram of an outer drum damping support plate according to some embodiments of the present disclosure

[0056] Figure 10 Schematic diagram of a first reinforcing plate according to some embodiments of the present disclosure

[0057] Figure 11 Schematic diagram of an upper outer drum reinforcing plate according to some embodiments of the present disclosure

[0058] Reference signs are as follows:

[0059] 10, cabinet; 101, bottom plate; 1011, square profile structure; 10111, left side; 10112, right side; 102, back plate; 1021, back cover plate; 1022, second reinforcing plate; 1023, first reinforcing plate; 10231, second fixing part; 103, left side plate; 20, drum assembly; 201, outer drum; 202, outer drum damping support plate; 2021, first fixing part; 203, upper outer drum reinforcing plate; 30, damping assembly; 301, first damper; 302, second damper; 303, third damper; 304, fourth damper; 40, height-adjustable foot. ​​​DETAILED DESCRIPTION

[0060] The present disclosure will be further described in detail by the following drawings and examples. The features and advantages of the present disclosure will become more apparent from the detailed description, when taken in conjunction with the accompanying drawings.

[0061] Unless otherwise defined, all technical and scientific terms used in the present disclosure have the same meanings as commonly understood by one of ordinary skill in the art to which this present disclosure belongs. The terminology used in the description of the present disclosure herein was chosen to best describe the particular embodiment, and is not intended to limit the present disclosure. In this detailed description of the present disclosure and in the appended claims, the terms "including" and "having," along with their derivatives as used herein, imply the inclusion of any stated integers or steps but not the exclusion of any other unstated integers or steps.

[0062] Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. The appearances of the phrase "in one embodiment" or "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, or to a single alternative embodiment.

[0063] The specific word "exemplary" in the present disclosure means "serving as an example, an instance, or illustration." In other words, any embodiment described as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0064] In the description of the present disclosure, the technical terms "first", "second", "third", and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the technical features indicated.

[0065] In the description of the present disclosure, the technical term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0066] In the description of the present disclosure, the technical terms "up", "down", "inner", "outer", "front", "back", "left", "right", "top", "bottom", and the like indicate the orientation or positional relationship based on the working state of the present disclosure, and are only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0067] In the description of the present disclosure, unless explicitly specified and limited, the technical terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense. For example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0068] In the description of the present disclosure, unless explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0069] In the description of the present disclosure, the meaning of "a plurality of" is more than two (including two), unless explicitly specified and limited.

[0070] In the description of the present disclosure, the same reference signs represent the same components, and for the sake of brevity, detailed description of the same components is omitted in different embodiments. It should be understood that the thickness, length and other dimensions of various components in the embodiments of the present disclosure shown in the drawings, as well as the overall thickness, length and other dimensions of the integrated device, are only exemplary and should not constitute any limitation on the present disclosure.

[0071] As part of the inventive concept of the present disclosure, before describing the embodiments of the present disclosure, the causes of the poor vibration and noise reduction effect of the existing drum washing machine in the related art are analyzed, and the technical scheme of the embodiments of the present disclosure is obtained through reasonable analysis.

[0072] In the related art, the drum washing machine also has a damping design inside. Generally, an assembly structure of connecting a hanging spring to the upper end of the drum and connecting a damper to the lower end is adopted, and the upper end of the box bears the tension of the hanging spring, but when the drum washing machine is dehydrated at high speed, the stress on the upper end of the box will cause the whole box to vibrate. In addition, at present, two dampers are usually arranged on the left side and the right side of the drum washing machine respectively when the damper is installed, and the axes of the two dampers on each side are parallel, but the inventors have found through research that this parallel linear design is not the optimal damping design scheme.

[0073] To this end, the present disclosure provides a drum washing machine, by optimizing the structure inside it, arranging the damping assembly on the left and right sides below the drum assembly, adjusting the connection position and inclination angle of the damper and the drum assembly, so that the dampers exist at a certain angle, that is, the front and rear dampers on the left side are not coplanar, and the front and rear dampers on the right side are also not coplanar. Based on this design of the damping assembly, the drum washing machine can achieve the optimal damping effect.

[0074] The technical solutions of the embodiments of the present disclosure are described in detail below in combination with the drawings. The technical features involved in the different embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other.

[0075] As shown in Figures 1-3 , in the embodiments of the present disclosure, a drum washing machine is provided, which includes a cabinet 10, a drum assembly 20, and a damping assembly 30, etc. The cabinet 10 forms a mounting cavity, including a bottom plate 101 and a top plate arranged opposite to each other, and a left side plate 103, a rear side plate 102, a right side plate, and a front side plate surrounding between the bottom plate 101 and the top plate. The drum assembly 20 is arranged inside the cabinet 10 and above the bottom plate 101, and the drum assembly 20 includes an inner drum and an outer drum 201 arranged coaxially. The damping assembly 30 is connected between the outer drum 201 of the drum assembly 20 and the bottom plate 101, and the damping assembly 30 is used for damping the drum assembly 20.

[0076] As shown in Figures 4-7 , the damping assembly 30 mainly includes an outer drum damping support plate 202 and four dampers, including a first damper 301 and a third damper 303 arranged on the left side inside the cabinet 10, and a second damper 302 and a fourth damper 304 arranged on the right side inside the cabinet 10.

[0077] The outer cylinder damping support plate 202 is arranged at the lower side of the outer cylinder 201. Specifically, the lower end of the first damper 301 is connected to the left front part of the bottom plate 101, and the upper end of the first damper 301 extends towards the outer cylinder 201 and is connected to the left front part of the outer cylinder damping support plate 202; the lower end of the second damper 302 is connected to the right front part of the bottom plate 101, and the upper end of the second damper 302 extends towards the outer cylinder 201 and is connected to the right front part of the outer cylinder damping support plate 202; the lower end of the third damper 303 is connected to the left rear part of the bottom plate 101, and the upper end of the third damper 303 extends towards the outer cylinder 201 and is connected to the left rear part of the outer cylinder damping support plate 202; the lower end of the fourth damper 304 is connected to the right rear part of the bottom plate 101, and the upper end of the fourth damper 304 extends towards the outer cylinder 201 and is connected to the right rear part of the outer cylinder damping support plate 202. By arranging the outer cylinder damping support plate 202 at the lower side of the outer cylinder 201, the dampers are indirectly fixed to the outer cylinder 201. During the operation of the washing machine, the damping function of the dampers and the elastic buffering effect of the outer cylinder damping support plate 202 are utilized, thereby effectively reducing the vibration of the washing machine.

[0078] The outer cylinder damping support plate 202 comprises: a front support plate section near the front part of the outer cylinder 201; a left support plate section arranged at the lower left side of the outer cylinder 201, one end of the left support plate section being connected to the front support plate section and the other end extending towards the rear part of the outer cylinder 201; and a right support plate section arranged at the lower right side of the outer cylinder 201, one end of the right support plate section being connected to the front support plate section and the other end extending towards the rear part of the outer cylinder 201. The upper end of the first damper 301 is connected to the front part of the left support plate section, the upper end of the second damper 302 is connected to the front part of the right support plate section, the upper end of the third damper 303 is connected to the rear part of the left support plate section, and the upper end of the fourth damper 304 is connected to the rear part of the right support plate section.

[0079] In this embodiment, the outer cylinder damping support plate 202 is optimized to have a U-shaped structure, thereby saving material costs while ensuring that the front part and the left and right sides of the outer cylinder 201 are effectively supported. In addition, the middle empty part of the U-shaped structure can provide a space for other structural components of the outer cylinder 201, such as the outer cylinder drain hole, thereby ensuring the compactness of the overall washing machine structure.

[0080] Optionally, the outer cylinder damping support plate 202 is made of sheet metal, which has a certain elastic force and high yield strength, thereby providing good support and damping effect for the outer cylinder 201.

[0081] To realize the oblique installation of the four dampers to form the optimal angle of damping the drum assembly 20, the first axis on which the first damper 301 is located intersects the second axis on which the second damper 302 is located above the bottom plate 101, and the first damper 301 and the second damper 302 are coplanar in a first plane perpendicular to the axis of the outer drum 201, the first axis forms an angle α1 with the vertical direction of the surface of the bottom plate 101, and the second axis forms an angle α2 with the vertical direction of the surface of the bottom plate 101; the third axis on which the third damper 303 is located intersects the fourth axis on which the fourth damper 304 is located above the bottom plate 101, and the third damper 303 and the fourth damper 304 are coplanar in a second plane perpendicular to the axis of the outer drum 201, the third axis forms an angle α3 with the vertical direction of the surface of the bottom plate 101, and the fourth axis forms an angle α4 with the vertical direction of the surface of the bottom plate 101; wherein 23° < α1 < 26°, 19° < α2 < 21°, 19° < α3 < 21°, and 23° < α4 < 26°.

[0082] In the embodiment, the two dampers on the left side damp the left lower side of the drum assembly 20, and the two dampers on the right side damp the right lower side of the drum assembly 20. The dampers on the left and right sides are staggered at certain angles to form a nonlinear installation angle. Compared with the traditional way of symmetrically arranging four dampers of the same type, when the first damper 301 has an oblique angle of 23° or 26°, and the first damper 301 and the fourth damper 304 have the same or similar oblique angles, the second damper 302 has an oblique angle of 19° or 21°, and the second damper 302 and the third damper 303 have the same or similar oblique angles, the damping effect (including the amplitude of the bottom plate of the washing machine and the eccentric resistance) is similar to that of the traditional washing machine. When the oblique angles of the four dampers are within the range in the embodiment, the damping effect of the damping assembly 30 on the drum assembly 20 is better than that provided by the traditional washing machine damping method.

[0083] It should be noted that considering that the process error in the installation process may cause the angle difference of the corresponding dampers to not absolutely satisfy the above requirements, and the axes on which the two dampers on the front side or the two dampers on the back side may not be absolutely coplanar, the simulation verification is also performed when the axes on which the two dampers on the front side satisfy the above range and the angle difference with the first plane is not more than 2°, and the axes on which the two dampers on the back side satisfy the above range and the angle difference with the second plane is not more than 2°. The effects are all better than those of the existing left-right symmetric arrangement of dampers.

[0084] In some optional ways, such as Figure 7As shown, the difference between a1 and a2 is in the range of 4°-6°, and the difference between a3 and a4 is in the range of 4°-6°. In this embodiment, in order to further reduce the vibration and noise of the drum washing machine, the angle difference of the front and rear dampers is optimized respectively. It is found through analysis that maintaining the first preset angle difference between the two front dampers and maintaining the second preset angle difference between the two rear dampers, which is the same as or similar to the first preset angle difference, can further improve the damping effect of the dampers on the drum assembly 20.

[0085] Alternatively, the difference between a1 and a4 is not more than 2°, and the difference between a2 and a3 is not more than 2°. By optimizing the relative angle between the first damper 301 and the fourth damper 304 with a larger inclination angle, and optimizing the relative angle between the second damper 302 and the third damper 303 with a smaller inclination angle, the four dampers form a specific inclination angle, wherein the two dampers arranged on opposite corners of the bottom plate 101 can generate relatively symmetrical forces in the corresponding diagonal direction of the outer drum 201, thereby forming a special damping structure and further improving the damping effect of the damping assembly on the drum assembly.

[0086] Further alternatively, a1=a4=25°, a2=a3=20°. In this embodiment, by changing the traditional front and rear "angle consistent" type damper design, simulation verification based on the established damper hysteresis model shows that when the angle difference between the first damper 301 and the third damper 303 is 5°, and the angle difference between the second damper 302 and the fourth damper 304 is also 5°, the vibration of the drum assembly 20 can be reasonably and efficiently distributed, thereby reducing noise. That is, the first damper 301 installed on the left front side of the outer drum 201 forms an angle of 25° with the vertical direction of the bottom plate 101, the second damper 302 installed on the right front side of the outer drum 201 forms an angle of 20° with the vertical direction of the bottom plate 101, the third damper 303 installed on the left rear side of the outer drum 201 forms an angle of 20° with the vertical direction of the bottom plate 101, and the fourth damper 304 installed on the right rear side of the outer drum 201 forms an angle of 25° with the vertical direction of the bottom plate 101.

[0087] Through comparison and verification with the parallel design damper scheme, it is found that under the condition of selecting the same type of damper, based on the design of the damping assembly 30 in this embodiment, the amplitude of the drum washing machine in the vertical direction of the bottom plate 101 is 16.5mm, while the amplitude of the parallel design damper scheme is 18.7mm, which is reduced by 2.2mm, and the amplitude is effectively reduced; the anti-eccentricity reaches 1000g, and the anti-eccentricity is stronger.

[0088] In some optional manners, considering that the bottom plate 101 of the existing drum washing machine is designed in a hollow manner, the internal noise will be transmitted to the external environment through the lower side. Therefore, in the embodiment, the bottom plate 101 is also optimized. For example, as shown in Figure 8 the bottom plate 101 is an integrated square plate structure, and the bottom plate 101 includes but is not limited to a sheet metal material. A square profiled structure 1011 is formed in the middle region of the bottom plate 101. The first damper 301 and the third damper 303 are correspondingly installed on the left side 10111 (i.e., the left part of the square profiled structure 1011) of the bottom plate 101. The second damper 302 and the fourth damper 304 are correspondingly installed on the right side 10112 (i.e., the right part of the square profiled structure 1011) of the bottom plate 101.

[0089] It should be noted that sheet metal is a comprehensive cold working process for sheet metal (usually below 6 mm), mainly including shearing, punching / cutting / compounding, folding, riveting, splicing, forming (such as automobile body), etc. For the sheet metal parts involved in the present disclosure, such as the outer cylinder, the sheet metal reinforcing assembly, etc., the commonly used materials include low-carbon steel, stainless steel, aluminum alloy, etc. The profiled structure is to press the sheet metal into a wave-shaped plate with a certain shape and size by a profiling machine, and then the profiled plates are combined to form a structure. Common profiled metal plates include profiled steel plates, profiled aluminum plates, etc. The square profiled structure 1011 in the embodiment is not necessarily a regular square structure, but can also be a rectangular structure or other polygonal structure. In addition, the pressing direction can also be bidirectional pressing, that is, part of the pressed structure is directed upward, and the other part of the pressed structure is directed downward. Optionally, the left side 10111 and the right side 10112 need to be ensured to be pressed in the same direction, so that each corresponding damper can be installed on the same height platform.

[0090] In the embodiment, when the cylinder is high-speed dewatered, the vibration force of the cylinder assembly 20 will be transmitted to the bottom plate 101 through the corresponding dampers. The bottom plate 101 of the cabinet 10 adopts an integrated design, and the bottom plate 101 adopts a large-scale profiled design, which improves the stiffness and natural frequency and avoids the resonance of the bottom cover plate caused by the dampers. In addition, the integrated design of the bottom plate 101 in the embodiment avoids the direct transmission of the internal noise of the cabinet 10 to the external environment through the lower side, which can isolate noise and effectively improve the user experience.

[0091] In some optional manners, as shown in Figures 3-6 and Figure 9 the outer cylinder damping support plate 202 is provided with a first fixing portion 2021. The first fixing portion 2021 is used to be connected with the rear side plate 102 of the cabinet 10 through a first connecting piece, so as to cooperate with the damping assembly 30 to fix and damp the outer cylinder 201.

[0092] In addition, considering that the existing drum washing machine adopts a pin mode, if a clearance fit is adopted, the pin will produce a knocking sound, and if an interference fit is adopted, the pin will be at risk of failure due to extrusion during long-term use. Based on this, the upper end of the corresponding damper in the embodiment can be inserted into a connecting cap, and the connecting cap is used to realize the assembly of the corresponding damper and the outer cylinder damping support plate 202, and the pin connection mode is no longer used, thereby further improving the reliability and mute effect.

[0093] In some optional modes, in order to further dampen and reduce the noise of the drum washing machine, and at the same time prevent the cracking or deformation of the bolt hole connecting the outer cylinder 201 and the box body 10 due to the vibration of the cylinder assembly 20, the box body 10 and the connection mode thereof with the cylinder assembly 20 are also optimized in the embodiment. Exemplarily, as shown in Figures 4-5 , Figure 10 The drum washing machine further comprises a first reinforcing plate 1023 for fixing and damping the outer cylinder 201 in cooperation with the outer cylinder damping support plate 202. The first reinforcing plate 1023 is arranged on the rear side plate 102 of the box body 10 and connected with the first fixed part 2021. Optionally, the second fixed part 10231 of the first reinforcing plate 1023 and the first fixed part 2021 on the outer cylinder damping support plate 202 are connected by bolts. The first reinforcing plate 1023 includes but is not limited to a sheet metal material.

[0094] In some optional modes, the connection mode of the cylinder assembly 20 and the box body 10 is further optimized, and a reinforcing plate is arranged on the upper side of the cylinder assembly 20 to be connected with the box body 10, which can reinforce the cylinder assembly 20 in the box body 10 on the one hand, and further dampen and reduce the noise of the drum washing machine on the other hand. Exemplarily, as shown in Figures 3-4 , Figure 11 The drum washing machine further comprises an outer cylinder upper reinforcing plate 203. The outer cylinder upper reinforcing plate 203 is arranged on the upper side of the outer cylinder 201 and connected with the rear side plate 102 of the box body 10, and is used for fixing and damping the outer cylinder 201 in cooperation with the damping assembly 30. The outer cylinder upper reinforcing plate 203 includes but is not limited to a sheet metal material.

[0095] Optionally, as shown in Figure 4As shown, the rear side plate 102 of the cabinet 10 comprises: a rear cover plate 1021 and a second reinforcing plate 1022 arranged vertically, and the second reinforcing plate 1022 is connected with the upper reinforcing plate 203 of the outer drum through a second connecting piece. Optionally, the second reinforcing plate 1022 comprises but is not limited to a sheet metal material. In the embodiment, the second reinforcing plate 1022 cooperates with the rear cover plate 1021 to form the rear side plate 102 of the cabinet 10, and the second reinforcing plate 1022 is fixedly connected with the upper reinforcing plate 203 of the outer drum. In the embodiment, the rear side plate 102 of the cabinet 10 is designed to be spliced by the second reinforcing plate 1022 and the rear cover plate 1021, which not only enhances the anti-deformation ability of the upper part of the rear side plate 102 of the cabinet 10, but also avoids the high cost problem caused by the use of sheet metal material for the whole rear side plate 102.

[0096] In some optional modes, in order to further reduce the vibration and noise of the drum washing machine, a counterweight can also be used to balance the drum assembly 20. For example, a counterweight is arranged on the outer drum vibration reduction support plate 202.

[0097] Optionally, the counterweight is detachably connected with the outer drum vibration reduction support plate 202, and the vibration of the outer drum 201 is reduced by adjusting the mass and position of the counterweight in cooperation with the damping assembly 30.

[0098] In some optional modes, as shown in the drawings, Figures 1-4 The drum washing machine further comprises four height-adjustable feet 40. The four height-adjustable feet 40 are respectively arranged at the four top corners of the bottom plate 101 and correspond to the first damper 301, the second damper 302, the third damper 303 and the fourth damper 304 one by one.

[0099] In the embodiment, four integrated dampers are arranged inside the cabinet 10. During the dehydration process, the vibration force of the drum assembly 20 is directly transmitted to the foot position through the corresponding four dampers, effectively avoiding the vibration of the cabinet 10 caused by the spring force, and reducing the vibration of the whole machine. In addition, based on the fact that the four integrated dampers are simultaneously installed on a whole bottom plate 101, the bottom plate 101 is simultaneously installed with the feet, avoiding the problem of abnormal sound caused by the riveting gap between the reinforcing member and the cabinet 10; in cooperation with the special inclined angle formed by the staggered dampers arranged on the left and right sides below the outer drum 201, a nonlinear installation angle is formed. Compared with the traditional parallel and symmetrical arrangement of dampers, the drum washing machine in the embodiment can achieve a better vibration reduction effect.

[0100] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than limit them; although the present disclosure has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure, and they should be covered in the scope of the claims and the description of the present disclosure. The present disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A drum-type washing machine, characterized by, The drum washing machine comprises: a cabinet including a bottom plate; a drum assembly arranged in the cabinet and above the bottom plate; and a damping assembly connected between an outer drum of the drum assembly and the bottom plate for damping the drum assembly, the damping assembly comprising: an outer drum damping support plate arranged at a lower side of a peripheral wall of the outer drum; a first damper having a lower end connected to a left front portion of the bottom plate and an upper end extending towards the outer drum and connected to a left front portion of the outer drum damping support plate; a second damper having a lower end connected to a right front portion of the bottom plate and an upper end extending towards the outer drum and connected to a right front portion of the outer drum damping support plate; a third damper having a lower end connected to a left rear portion of the bottom plate and an upper end extending towards the outer drum and connected to a left rear portion of the outer drum damping support plate; and 2. The drum-type washing machine according to claim 1, characterized in that, a fourth damper having a lower end connected to a right rear portion of the bottom plate and an upper end extending towards the outer drum and connected to a right rear portion of the outer drum damping support plate. The outer drum damping support plate comprises: a front support plate segment near a front portion of the outer drum; a left support plate segment arranged at a lower left side of the peripheral wall of the outer drum, one end of the left support plate segment being connected to the front support plate segment and the other end extending towards a rear portion of the outer drum; and a right support plate segment arranged at a lower right side of the peripheral wall of the outer drum, one end of the right support plate segment being connected to the front support plate segment and the other end extending towards the rear portion of the outer drum.

3. The drum-type washing machine according to claim 1, characterized in that, The upper end of the first damper is connected to a front portion of the left support plate segment, the upper end of the second damper is connected to a front portion of the right support plate segment, the upper end of the third damper is connected to a rear portion of the left support plate segment, and the upper end of the fourth damper is connected to a rear portion of the right support plate segment.

4. The drum-type washing machine according to claim 1, characterized in that, The outer drum damping support plate is made of sheet metal.

5. The drum-type washing machine according to claim 4, characterized in that, The first axis of the first damper and the second axis of the second damper intersect above the bottom plate, and the first damper and the second damper are coplanar in a plane perpendicular to the axis of the outer drum, the angle between the first axis and the vertical direction of the bottom plate is α1, and the angle between the second axis and the vertical direction of the bottom plate is α2; the third axis of the third damper and the fourth axis of the fourth damper intersect above the bottom plate, and the third damper and the fourth damper are coplanar in another plane perpendicular to the axis of the outer drum, the angle between the third axis and the vertical direction of the bottom plate is α3, and the angle between the fourth axis and the vertical direction of the bottom plate is α4; 23°<α1<26°, 19°<α2<21°, 19°<α3<21°, and 23°<α4<26°. The difference between α1 and α2 is in the range of 4°-6°, and the difference between α3 and α4 is in the range of 4°-6°.

6. The drum washing machine according to claim 5, wherein the difference between α1 and α4 is not more than 2°, and the difference between α2 and α3 is not more than 2°.

7. The drum-type washing machine according to claim 1, characterized in that, The bottom plate is an integrated square plate structure. The first and third shock absorbers are installed on the left side of the bottom plate, and the second and fourth shock absorbers are installed on the right side of the bottom plate.

8. A drum-type washing machine according to any one of claims 1 to 7, characterized in that, The outer cylinder damping support plate rear portion is provided with a first fixing portion for connecting with the cabinet rear side plate through a first connecting piece.

9. The drum-type washing machine according to claim 8, characterized in that, The drum washing machine further comprises: An outer cylinder upper reinforcing plate is arranged on the upper side of the outer cylinder and connected with the cabinet rear side plate.

10. The drum-type washing machine according to claim 4, characterized in that, The drum washing machine further comprises: Four height-adjustable feet are arranged at the four top corners of the bottom plate and correspond to the first, second, third and fourth shock absorbers respectively.

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