CN219653322U - Drum washing machine - Google Patents

Abstract

The utility model provides a drum washing machine, which comprises an inner drum, an inner drum rear cover and at least one lifting rib. The axis of interior bucket sets up along the horizontal direction slope, and interior bucket outline is circular, and lid lock is on interior bucket behind the interior bucket, promotes the muscle setting and including the inner wall of bucket. The inclined inner barrel can improve the friction force between clothes and the drum washing machine, so that the cleaning force of the drum washing machine for cleaning the clothes is improved, and the inner barrel and the rear cover of the inner barrel can form a containing space, so that a user can place the clothes to be cleaned in the containing space when the user uses the drum washing machine for cleaning the clothes. When washing the clothing, the lifting rib that sets up on the inner tub can take up the clothing constantly, in-process that the inner tub rolled, the clothing that is taken to the eminence can drop under the effect of gravity, produces the effect of beating the clothing from this, can get rid of the spot on the clothing, promotes the cleaning performance when drum type washing machine washs the clothing to solve the problem that drum type washing machine cleaning performance is poor.

Description

Drum washing machine

Technical Field

The utility model relates to the technical field of washing machines, in particular to a drum washing machine.

Background

The washing machine is a cleaning appliance for washing laundry using an electric power generating mechanical action, and in order to save labor, the washing machine may be used instead of a user to perform a washing operation. The washing machine may be classified into pulsator washing machine and drum washing machine. Wherein, the barrel body of the pulsator washing machine is perpendicular to the ground. In the process of washing clothes by using the pulsator washing machine, the pulsator arranged at the bottom of the barrel body can be used for driving water flow to move by forward or reverse rotation. In this way, the moving water flow drives the clothes to turn over, so that friction is carried out between the clothes and the barrel wall, and dirt is removed under the action of the detergent.

When the pulsator washing machine is used for washing clothes, the pulsator washing machine mainly uses water flow to lift the clothes, so that the water consumption of the pulsator washing machine is large. The drum washing machine has smaller water consumption, and can solve the problem of large water consumption of the pulsator washing machine. In the process of washing clothes by using a drum washing machine, the basic principle is that the physical property of water is utilized, and when the drum washing machine is used for washing the clothes, the surface tension of the water and the fluidity of the water can be utilized, and the clothes are continuously rolled in the water, so that stains on the clothes are dissolved or washed away.

However, since the drum washing machine has less operations such as rubbing during washing, for example, in the process of washing laundry using the drum washing machine, the laundry is merely tumbled back and forth in the washing machine, and stains on a portion of the laundry may be difficult to wash, and the stains on the laundry may not be cleaned by the tumbling motion alone. Thus, washing laundry by the drum washing machine may cause some laundry to be not washed cleanly, that is, the drum washing machine has poor cleaning effect.

Disclosure of Invention

Some embodiments of the present utility model provide a drum washing machine to solve the problem of poor cleaning effect of the drum washing machine.

Some embodiments of the present utility model provide a drum washing machine including:

the central axis of the inner barrel is obliquely arranged along the horizontal direction, and the outer contour of the inner barrel is circular; therefore, when the drum washing machine rotates, the collision force of clothes on the inner wall of the drum along the vertical direction is larger, and when the clothes drop from the inner wall of one side or are beaten to the inner wall of the opposite side by the washing machine, the dropping height between the clothes and the drum washing machine is also increased, so that the friction force between the clothes and the drum washing machine can be further improved, and therefore, the inclined inner drum can improve the cleaning force of the drum washing machine for cleaning the clothes;

the inner barrel rear cover is buckled on the inner barrel; the connection mode of the rear cover of the inner barrel and the inner barrel is not limited to buckling, and can be connected in a bolt mode and the like, and the utility model is not limited in a specific mode. The inner barrel and the inner barrel rear cover can form a containing space no matter the inner barrel rear cover is connected with the inner barrel in a buckling way or in a bolt way or in other ways. Thus, a user can place laundry to be washed in the accommodating space while washing the laundry with the drum washing machine.

At least one lifting rib is arranged on the inner wall of the inner barrel. The quantity that promotes the muscle setting can be set according to actual demand. In the process of washing laundry using the drum washing machine, the drum washing machine may rotate the inner tub by the motor, which is not shown, to generate centrifugal force. Like this, set up the hoisting rib on the inner tub and can constantly take up clothes, in-process that the inner tub rolled, the clothes that is taken to the eminence can drop under the effect of gravity, produces the effect of beating clothes from this, can get rid of the spot on the clothing, promotes the cleaning performance when drum type washing machine washs the clothing.

In some embodiments, the inner barrel has a diameter of 500 to 540 millimeters. In this way, the accommodating space formed by the inner tub and the rear cover of the inner tub is sufficient, and more clothes to be washed can be accommodated. Meanwhile, because the containing space is sufficient, when the drum washing machine rotates, the contact area of clothes and the detergent is larger, the contact is more uniform, and the cleaning effect of the clothes during washing can be further improved.

In some embodiments, the inner tub is uniformly distributed with a plurality of first through holes. Thus, after the washing of the laundry is completed, the moisture in the inner tub and the moisture in the laundry may be discharged through the first through hole.

In some embodiments, the first through hole is drop-shaped. Thus, the first through hole with the water drop shape can increase friction force between the clothes and the inner barrel, and the clothes can be cleaned more cleanly.

In some embodiments, the inner tub rear cover is provided with at least one rear cover protrusion. Therefore, the rear cover bulge can increase friction among clothes, between clothes and the inner barrel and between the clothes and the rear cover of the inner barrel, and increase friction force, so as to achieve the effect of rubbing the clothes, and therefore, the rear cover bulge of the rear cover of the inner barrel can improve the cleaning effect of the drum washing machine for washing the clothes.

In some embodiments, the inner tub rear cover is provided with a plurality of second through holes, and the second through holes are uniformly formed at both sides of the rear cover protrusion. Thus, after the washing of the laundry is completed, the moisture in the inner tub and the moisture in the laundry may be discharged through the second through hole.

In some embodiments, the lifting rib is provided with at least one lifting rib protrusion. Therefore, the lifting rib bulges can further lift friction force among clothes, the inner barrel and the lifting rib, and achieve the effect of rubbing the clothes, so that the lifting rib bulges of the lifting rib can also promote the cleaning effect of the drum washing machine for washing the clothes.

In some embodiments, a plurality of third through holes are provided on the lifting rib. Like this, the third through-hole on the lifting rib can promote the washing effect of rivers to abluent clothing, through the high water permeability of third through-hole, and then promotes washing dynamics, promotion to abluent clothing cleaning effect.

In some embodiments, the lifting ribs snap onto the inner wall of the inner tub. Therefore, after the lifting ribs are buckled on the inner wall of the inner barrel, the lifting ribs can bring up clothes in the rotating process of the drum washing machine, so that the effects of stirring, rubbing and the like of the clothes are realized.

In some embodiments, the lifting rib is fixedly connected to the inner wall of the inner tub by a bolt. Therefore, after the lifting ribs are fixedly connected to the inner wall of the inner barrel through bolts, the lifting ribs can lift clothes in the rotating process of the drum washing machine, and the effects of stirring, rubbing and the like of the clothes are achieved.

In view of the foregoing, some embodiments of the present utility model provide a drum washing machine including an inner tub, an inner tub rear cover, and at least one lifting rib. Wherein, the axis of interior bucket can be followed the horizontal direction slope and set up, and the outline of interior bucket is circular, and lid lock is on interior bucket behind the interior bucket, promotes the muscle setting and including the inner wall of bucket. The inclined inner barrel can improve the friction force between clothes and the drum washing machine, so that the cleaning force of the drum washing machine for cleaning the clothes is improved, and the inner barrel and the rear cover of the inner barrel can form a containing space, so that a user can place the clothes to be cleaned in the containing space when the user uses the drum washing machine for cleaning the clothes. When washing the clothing, the lifting rib that sets up on the inner tub can take up the clothing constantly, in-process that the inner tub rolled, the clothing that is taken to the eminence can drop under the effect of gravity, produces the effect of beating the clothing from this, can get rid of the spot on the clothing, promotes the cleaning performance when drum type washing machine washs the clothing to solve the problem that drum type washing machine cleaning performance is poor.

Drawings

In order to more clearly illustrate some embodiments of the present utility model or technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a split structure of various parts of a drum washing machine according to some embodiments of the present utility model;

fig. 2 is a schematic view illustrating an inner tub structure of a drum washing machine according to some embodiments of the present utility model;

fig. 3 is a schematic view illustrating a rear cover structure of an inner tub of a drum type washing machine according to some embodiments of the present utility model;

fig. 4 is a schematic structural view of a lifting rib of a drum washing machine according to some embodiments of the present utility model.

Illustration of:

wherein, 01-inner barrel; 011-a first via; 02-an inner tub rear cover; 021-rear cover projection; 022-a second through hole; 03-lifting ribs; 031-lifting rib protrusions; 032-third through hole.

Detailed Description

For the purposes of making the objects and embodiments of the present utility model more apparent, an exemplary embodiment of the present utility model will be described in detail below with reference to the accompanying drawings in which exemplary embodiments of the present utility model are illustrated, it being apparent that the exemplary embodiments described are only some, but not all, of the embodiments of the present utility model.

It should be noted that the brief description of the terminology in the present utility model is for the purpose of facilitating understanding of the embodiments described below only and is not intended to limit the embodiments of the present utility model. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.

The terms first, second, third and the like in the description and in the claims and in the above-described figures are used for distinguishing between similar or similar objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.

The terms "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

The washing machine is a cleaning appliance for washing laundry using an electric power generating mechanical action, and in order to save labor, the washing machine may be used instead of a user to perform a washing operation. In some embodiments, the washing machine may be classified into pulsator washing machine and drum washing machine. Wherein, the barrel body of the pulsator washing machine is perpendicular to the ground. In the process of washing clothes by using the pulsator washing machine, the pulsator arranged at the bottom of the barrel body can be used for driving water flow to move by forward or reverse rotation. In this way, the moving water flow drives the clothes to turn over, so that friction is carried out between the clothes and the barrel wall, and dirt is removed under the action of the detergent. However, when washing laundry using the pulsator washing machine, the pulsator washing machine mainly uses water current to lift the laundry, and thus the water consumption of the pulsator washing machine is large.

The drum washing machine has smaller water consumption, and can solve the problem of large water consumption of the pulsator washing machine. In some embodiments, the tub of the drum washing machine is parallel to the ground, and the motor rotates the tub to generate centrifugal force when washing clothes with the drum washing machine. In washing laundry using a drum washing machine, the basic principle thereof is to use the physical properties of water. When the drum washing machine washes clothes, the surface tension of water and the fluidity of water can be utilized, and the clothes continuously tumble in the water, so that stains on the clothes are dissolved or washed away.

However, since the drum washing machine has less operations such as rubbing during the washing process, a portion of the laundry may not be washed cleanly, that is, the drum washing machine has a poor cleaning effect. For example, in the process of washing laundry using a drum washing machine, the laundry tumbles back and forth only in the washing machine, and stains on part of the laundry may be difficult to wash, and the stains on the laundry cannot be cleaned only by the tumbling action.

Before the washing machine appears, the user adopts modes such as rubbing, beating, washing and the like to wash the clothes, so that the clothes can be washed cleanly. In some embodiments, the above-described washing manner may be emulated to the washing machine to enhance the cleaning degree and washing efficiency of the washing machine.

Based on the above-mentioned circumstances, some embodiments of the present utility model provide a drum washing machine, which can simulate operations such as rubbing and beating, so as to simulate a washing action of a user on the washing machine. Therefore, the drum washing machine can clean clothes more cleanly, so that manpower can be saved, and the cleaning efficiency of the drum washing machine is improved. Hereinafter, a drum washing machine in an embodiment of the present utility model will be described in detail with reference to the accompanying drawings and detailed description.

Fig. 1 is a schematic diagram of a split structure of each component of a drum washing machine according to some embodiments of the present utility model, and as shown in fig. 1, the drum washing machine may include an inner tub 01, an inner tub rear cover 02, and at least one lifting rib 03. The respective components are described in detail below.

In order to enable the drum washing machine to raise collision force and drop height of laundry in a vertical direction when the drum washing machine is rotated, in some embodiments, a central axis of the inner tub 01 may be inclined in a horizontal direction, and an outer contour of the inner tub 01 is circular. The specific inclination angle can be set according to actual requirements, and the specific numerical value is not limited by the utility model. The central axis of the inner tub 01 may be inclined at a predetermined angle in the horizontal direction, that is, the inner tub 01 is inclined, so that when the drum washing machine rotates, the collision force of laundry in the vertical direction on the inner wall of the tub is greater, and the falling height between the laundry is increased when the laundry falls from the inner wall of one side or is beaten to the inner wall of the opposite side by the washing machine, thereby further improving the friction between the laundry and the drum washing machine, and thus, the inclined inner tub 01 may improve the cleaning force of the drum washing machine for washing the laundry.

In order to accommodate laundry to be washed in the inner tub 01, in some embodiments, the drum washing machine inner tub is provided with a rear cover 02, and the rear cover 02 may be fastened to the inner tub 01. It should be understood that the connection mode of the inner tub rear cover 02 and the inner tub 01 is not limited to the buckling, and may be a bolt connection mode, etc., and the present utility model is not limited thereto. The inner barrel 01 and the inner barrel rear cover 02 can form a containing space no matter the inner barrel rear cover 02 and the inner barrel 01 are connected in a buckling manner or in a bolt manner or in other manners. Thus, a user can place laundry to be washed in the accommodating space while washing the laundry with the drum washing machine.

In order to enhance the cleaning effect of the drum washing machine when washing laundry, in some embodiments, the drum washing machine includes at least one lifting rib 03, and the lifting rib 03 is disposed at an inner wall of the inner tub 01. The number of the lifting ribs 03 can be set according to actual requirements, for example, the lifting ribs 03 can be set to 3, other numbers can be set, and the like. In the process of washing laundry using the drum washing machine, the drum washing machine rotates the inner tub 01 by a motor, which is not shown, to generate centrifugal force. Like this, set up in the lifting rib 03 on barrel 01 can take up the clothes constantly, in the in-process that barrel 01 rolled, the clothes that is taken to the eminence can drop under the effect of gravity, produces the effect of beating the clothes from this, can get rid of the spot on the clothing, promotes the cleaning performance when drum type washing machine washs the clothing.

In some embodiments, the lifting rib 03 may be fastened to the inner wall of the inner tub 01, or may be fixedly connected to the inner wall of the inner tub 01 through a bolt, which is not particularly limited. No matter which way the lifting rib 03 is connected with the inner barrel 01, the lifting rib 03 can carry the clothes in the rotating process of the drum washing machine, so that the effects of stirring, rubbing and the like of the clothes are realized.

Fig. 2 is a schematic view of an inner tub structure of a drum washing machine according to some embodiments of the present utility model, as shown in fig. 2, in some embodiments, the inner tub 01 has a diameter of 500-540 mm, for example, 530 mm. In this way, the accommodating space formed by the inner tub 01 and the inner tub rear cover 02 is sufficient, and more clothes to be washed can be accommodated. Meanwhile, because the containing space is sufficient, when the drum washing machine rotates, the contact area of clothes and the detergent is larger, the contact is more uniform, and the cleaning effect of the clothes during washing can be further improved.

With continued reference to fig. 2, in some embodiments, the inner tub 01 has a plurality of first through holes 011 uniformly distributed thereon. In this way, after the laundry washing is completed, the moisture in the inner tub 01 and the moisture in the clothes may be discharged through the first through-hole 011.

In order to enhance friction between laundry and the inner tub 01 in the drum washing machine, the first through-hole 011 may have a drop shape as shown in fig. 2 in some embodiments. Thus, the drop-shaped first through holes 011 can increase friction between laundry and the inner tub 01, and thus can clean the laundry more cleanly.

Fig. 3 is a schematic view of an inner tub rear cover structure of a drum washing machine according to some embodiments of the present utility model, as shown in fig. 3, in some embodiments, at least one rear cover protrusion 021 is provided on the inner tub rear cover 02. The number of the rear cover protrusions 021 is not limited, and the number of the rear cover protrusions 021 may be 3 as shown in fig. 3 or other numbers. Thus, the rear cover protrusions 021 can increase friction between clothes and the clothes, between the clothes and the inner tub 01 and between the clothes and the inner tub rear cover 02, and increase friction force, so as to achieve the effect of rubbing the clothes, and therefore, the rear cover protrusions 021 of the inner tub rear cover 02 can improve the cleaning effect of the drum washing machine for washing the clothes.

With continued reference to fig. 3, in some embodiments, the inner tub rear cover 02 is provided with a plurality of second through holes 022, and the second through holes 022 are uniformly disposed at both sides of the rear cover protrusion 021. In this way, after the washing of the laundry is completed, the moisture in the inner tub 01 and the moisture in the laundry may be discharged through the second through hole 022.

Fig. 4 is a schematic structural view of a lifting rib of a drum washing machine according to some embodiments of the present utility model, as shown in fig. 4, in some embodiments, at least one lifting rib protrusion 031 is disposed on the lifting rib 03. Like this, lifting rib protrusion 031 can further promote the frictional force between clothing and clothing, clothing and interior bucket 01 and lifting rib 03, reaches the effect of rubbing the clothing, consequently, lifting rib protrusion 031 of lifting rib 03 can promote the cleaning performance of drum type washing machine washing clothing equally.

In order to enhance the washing effect of the water flow on the laundry when the drum washing machine washes the laundry, in some embodiments, a plurality of third through holes 032 may be provided on the lifting rib 03. The third through-hole 032 may be provided in a plurality, and the present utility model is not limited to a specific shape, and for example, may be circular. Like this, the third through-hole 032 on the lifting rib 03 can promote the washing effect of rivers to abluent clothing, through the high water permeability of third through-hole 032, and then promote the washing dynamics to abluent clothing, promote the cleaning effect to the clothing. The number of the third through holes 032 can be set according to actual requirements, for example, the number of the third through holes 032 can be adaptively increased or decreased, and the specific number is not limited by the present utility model.

As can be seen from the above discussion, in the process of washing clothes by using the drum washing machine, clothes can be continuously carried up by the lifting ribs 03, and in the process of rolling the inner tub 01, the clothes carried to a high position by the lifting ribs 03 can fall under the action of gravity, so that the effect of beating the clothes is achieved, friction force between the clothes can be improved, stains on the clothes can be removed, and the cleaning effect of the drum washing machine when the clothes are washed is improved. In addition, the washing of the laundry can be realized through the high water permeability of the third through hole 032, thereby improving the washing effect of the laundry.

That is, in some embodiments of the present utility model, the action of manually washing laundry by a user may be simulated into the drum washing machine, and the inner tub 01 adopts a size of, for example, 530 mm while adopting an inclined design so that the laundry has a maximally defined drop height while rotating within the tub. The inner barrel rear cover 02 is provided with at least one rear cover bulge 021, the lifting rib 03 is provided with at least one lifting rib bulge 031, and the bulge parts of the rear cover bulge 021 and the lifting rib bulge 031 can increase the friction force between clothes and between the clothes and the barrel body, so as to achieve the effect of rubbing the clothes. Meanwhile, the third through hole 032 on the lifting rib 03 can increase the effect of washing clothes by water flow, and the cooperation among the above components can enable the drum washing machine to simulate the mode of manually washing clothes by a user, so that the effect of integrating a whole set of processes of rubbing, beating, washing and the like into the drum washing machine is realized.

The diameter of the inner tub 01 is 500-540 mm, for example, a mode of combining a large tub diameter of 530 mm with an inclined tub is adopted, so that when the drum washing machine rotates, the collision force of clothes on the inner wall of the tub along the vertical direction is larger, and when the clothes fall from the inner wall of one side or are beaten to the inner wall of the opposite side by the washing machine, the falling height between the clothes and the inner wall of the opposite side is increased, thereby further improving the friction force between the clothes and the drum washing machine, and further improving the cleaning force of the drum washing machine for cleaning the clothes.

For another example, the first through hole of the inner tub 01 is in a drop shape, and the drop-shaped first through hole can increase friction between clothes and the inner tub, so that the clothes can be cleaned more cleanly. The inner barrel rear cover is provided with at least one rear cover bulge. Therefore, the rear cover bulge can increase friction among clothes, between clothes and the inner barrel and between the clothes and the rear cover of the inner barrel, and increase friction force, so as to achieve the effect of rubbing the clothes, and therefore, the rear cover bulge of the rear cover of the inner barrel can improve the cleaning effect of the drum washing machine for washing the clothes.

For another example, at least one lifting rib protrusion is arranged on the lifting rib. Therefore, the lifting rib bulges can further lift friction force among clothes, the inner barrel and the lifting rib, and achieve the effect of rubbing the clothes, so that the lifting rib bulges of the lifting rib can also promote the cleaning effect of the drum washing machine for washing the clothes.

In summary, in the embodiment of the present utility model, the inner tub 01, the first through hole 011, the inner tub rear cover 02, the rear cover protrusion 021, the second through hole 022, the lifting rib 03, the lifting rib protrusion 031 and the third through hole 032 are matched, so that the drum washing machine improves the cleaning effect of washing clothes.

As can be seen from the above technical solutions, the above embodiments provide a drum washing machine, which includes an inner tub 01, an inner tub rear cover 02, and at least one lifting rib 03. Wherein, the axis of interior bucket 01 can be along the horizontal direction slope setting, and the outline of interior bucket 01 is circular. The inner barrel rear cover 02 is buckled on the inner barrel 01, and the lifting ribs 03 are arranged on the inner wall of the inner barrel 01. The inclined inner tub can raise the cleaning force of the drum washing machine to clean clothing, and the inner tub and the back cover may form one holding space for the clothing to be cleaned to be set inside. When washing the clothing, the lifting rib that sets up on the inner tub can take up the clothing constantly, in-process that the inner tub rolled, the clothing that is taken to the eminence can drop under the effect of gravity, produces the effect of beating the clothing from this, can get rid of the spot on the clothing, promotes the cleaning performance when drum type washing machine washs the clothing to solve the problem that drum type washing machine cleaning performance is poor.

The same and similar parts of the embodiments in this specification are referred to each other, and are not described herein.

It will be apparent to those skilled in the art that the techniques of embodiments of the present utility model may be implemented in software plus a necessary general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present utility model may be embodied essentially or in parts contributing to the prior art in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method of the embodiments or some parts of the embodiments of the present utility model.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims (10)

1. A drum washing machine, comprising:

the inner barrel (01) is obliquely arranged along the horizontal direction on the central axis of the inner barrel (01), and the outer contour of the inner barrel (01) is circular;

an inner barrel rear cover (02), wherein the inner barrel rear cover (02) is buckled on the inner barrel (01);

at least one lifting rib (03), wherein the lifting rib (03) is arranged on the inner wall of the inner barrel (01).

2. Drum washing machine according to claim 1, characterized in that the diameter of the inner tub (01) is 500-540 mm.

3. The drum washing machine as claimed in claim 1, wherein the inner tub (01) is uniformly provided with a plurality of first through holes (011).

4. A drum washing machine as claimed in claim 3, characterized in that the first through hole (011) is drop-shaped.

5. The drum washing machine as claimed in claim 1, wherein at least one rear cover protrusion (021) is provided on the inner tub rear cover (02).

6. The drum washing machine as claimed in claim 5, wherein the inner tub rear cover (02) is provided with a plurality of second through holes (022), and the second through holes (022) are uniformly provided at both sides of the rear cover protrusion (021).

7. Drum washing machine according to claim 1, characterized in that the lifting rib (03) is provided with at least one lifting rib protrusion (031).

8. Drum washing machine according to claim 1, characterized in that the lifting rib (03) is provided with a plurality of third through holes (032).

9. Drum washing machine according to claim 1, characterized in that the lifting ribs (03) are snapped onto the inner wall of the inner tub (01).

10. Drum washing machine according to claim 1, characterized in that the lifting ribs (03) are fixedly connected to the inner wall of the inner tub (01) by bolts.