Lifting device for a drum washing machine and drum washing machine

Abstract

The present application relates to the technical field of washing machines, and particularly provides a lifting device for a drum washing machine. In order to solve the problem of unreasonable arrangement of a centrifugal assembly of the lifting device of the existing drum washing machine and thus reduced service life, the lifting device for the drum washing machine comprises a shell with a cavity structure, a valve body guide column, a valve core, a counterweight guide column, a counterweight, a balance lever and an elastic member and other centrifugal assemblies in the cavity structure, and the middle part of the balance lever is pivotally connected to the inside of the shell; the first end of the balance lever is hingedly connected to the first end of the counterweight guide column, the second end of the counterweight guide column is slidably connected to the counterweight through the shell, the elastic member is arranged between the counterweight guide column and the shell and used for resetting the position of the counterweight, the second end of the balance lever is hingedly connected to the first end of the valve body guide column, and the second end of the valve body guide column is connected to the valve body through the shell. The arrangement of the components and the lever structure of the present application is more reasonable.

Description

Technical Field

[0001] This invention relates to the field of washing machine technology, specifically providing a lifting device for a drum washing machine and a drum washing machine. Background Technology

[0002] Existing drum washing machines use an outer drum filled with water and an inner drum that rotates to wash the drum. This creates a gap between the drums, which can harbor dirt and bacteria. Furthermore, the water filling the space between the inner and outer drums results in wasted water. Based on the above problems, the inventors proposed a solution, namely the patent application number 202010021697.6, which disclosed the structure of a drum washing machine without a perforated inner drum and a centrifugal drainage component. The patent described the centrifugal drainage component as including a centrifugal element that generates centrifugal motion under centrifugal force, the centrifugal element including a connecting part and a counterweight part, one end of the connecting part being connected to the counterweight part, and the other end being rotatably connected to a sealing plunger, the middle part of the connecting part being rotatably mounted on the plunger seat to form a lever structure. This patent proposed a centrifugal drainage solution using a centrifugal component to solve the drainage problem of the drum washing machine without a perforated inner drum. However, after using the machine, the inventors found that with increased use, the counterweight part was improperly set, and the increased number of swings caused wear on the rotating shaft, resulting in noise and structural instability. Ultimately, this led to poor sealing of the drain outlet and the inability to adjust the centrifugal component, ultimately requiring replacement of the centrifugal component. In other words, the previously applied solution still had a problem of insufficient service life. Based on this, the inventors continued to propose a new structure for improvement, making it less prone to noise and with a longer service life.

[0003] Accordingly, there is a need in the art for a new lifting device for drum washing machines to address the problem of the unreasonable arrangement of the centrifugal components in the existing lifting devices of drum washing machines, which reduces their service life. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that the centrifugal component of the lifting device of the existing drum washing machine is not set up properly, thus reducing its service life.

[0005] In a first aspect, the present invention provides a lifting device for a drum washing machine, comprising a housing with a cavity structure, wherein a centrifugal assembly is disposed within the cavity structure, the centrifugal assembly comprising a valve body guide post, a valve core, a counterweight guide post, a counterweight, a balance bar, and an elastic element; the middle portion of the balance bar is pivotally connected to the interior of the housing; a first end of the balance bar is hinged to a first end of the counterweight guide post, a second end of the counterweight guide post passes through a first through hole on the housing and is connected to the counterweight, and the counterweight guide post is slidably disposed within the first through hole; the elastic element is disposed between the counterweight guide post and the housing for repositioning the counterweight; the second end of the balance bar is hinged to a first end of the valve body guide post, the second end of the valve body guide post passes through a second through hole on the housing and is connected to the valve core, and the valve body guide post is slidably disposed within the second through hole.

[0006] In the preferred embodiment of the lifting device for a drum washing machine described above, the outer casing includes a cover-shaped lifting rib shell and a bracket disposed at the opening of the lifting rib shell, wherein the first through hole and the second through hole are disposed on the bracket.

[0007] In the preferred embodiment of the lifting device for a drum washing machine described above, the counterweight guide column includes a first connecting ear and a first sliding rod disposed on the first connecting ear. The first end of the balance rod is hinged to the first connecting ear. A boss is provided between the first connecting ear and the first sliding rod. The elastic element is a spring. The spring is sleeved on the first sliding rod, and one end of the spring abuts against the boss, while the other end abuts against the inner surface of the bracket.

[0008] In the preferred embodiment of the lifting device for a drum washing machine described above, the first slide bar is threadedly connected to the counterweight, and the counterweight abuts against the outer surface of the bracket.

[0009] In the preferred embodiment of the lifting device for a drum washing machine described above, the size of the counterweight is larger than the size of the first through hole; and / or, the size of the valve core is larger than the size of the second through hole.

[0010] In the preferred embodiment of the lifting device for a drum washing machine described above, the valve body guide post includes a second connecting lug and a second slide rod disposed on the second connecting lug, the second end of the balance rod is hinged to the second connecting lug, the valve core is detachably connected to the second slide rod, and a sealing element is also provided on the top of the valve core.

[0011] In the preferred embodiment of the lifting device for a drum washing machine described above, an annular sealing rib is further provided at the bottom of the sealing element.

[0012] In the preferred embodiment of the lifting device for a drum washing machine described above, a support is provided on the bracket, and the middle part of the balance bar is pivotally connected to the support; and / or, a water passage hole is provided on the lifting rib shell.

[0013] In the preferred embodiment of the lifting device for a drum washing machine described above, the counterweight and the counterweight guide column are separately configured or integrally formed; and / or, the valve body guide column and the valve core are separately configured or integrally formed.

[0014] The present invention also provides a drum washing machine, the drum washing machine including an outer drum and an inner drum rotatably disposed inside the outer drum, the inner drum being provided with a clothes inlet cooperating with the washing machine door, a water inlet connected to a water inlet pipe and a water outlet, the water outlet being provided with a lifting device for the drum washing machine as described in any one of claims 1-9, the valve core of the lifting device being disposed at the water outlet, so that when the door is closed, the water inlet is closed and the valve core blocks the water outlet, the inner drum is a sealed chamber, and when the door is closed, the water inlet is closed and the valve core is disengaged from the water outlet, the inner drum can drain normally.

[0015] Those skilled in the art will understand that, in the technical solution of the present invention, the lifting device for a drum washing machine includes a shell with a cavity structure, and a centrifugal assembly is disposed within the cavity structure. The centrifugal assembly includes a valve body guide post, a valve core, a counterweight guide post, a counterweight, a balance bar, and an elastic element. The middle portion of the balance bar is pivotally connected to the inside of the shell. The first end of the balance bar is hinged to the first end of the counterweight guide post. The second end of the counterweight guide post passes through a first through hole on the shell and is connected to the counterweight. The counterweight guide post is slidably disposed within the first through hole. The elastic element is disposed between the counterweight guide post and the shell for repositioning the counterweight. The second end of the balance bar is hinged to the first end of the valve body guide post. The second end of the valve body guide post passes through a second through hole on the shell and is connected to the valve core. The valve body guide post is slidably disposed within the second through hole.

[0016] With the above technical solution, the present invention can achieve lever movement by setting a centrifugal component inside the lifting device, using the central rotating shaft of the middle part of the balance bar as the fixed axis, so that the counterweight guide column and the valve body guide column, which are respectively hinged at both ends of the balance bar, can perform lever movement. A counterweight is set at the second end of the counterweight guide column so that the valve body guide column can drive the valve core to disengage from the water outlet. A spring is set on the inner surface of the outer shell at the top of the counterweight to provide pre-pressure for the valve core. Under the action of the spring, the spring simultaneously applies a certain pressure to the outer shell and the first end of the balance bar. The counterweight abuts against the outer surface of the outer shell under the force of the spring. The other end of the spring transmits the force received by the first end of the balance bar to the second end of the balance bar, and then to the second end of the valve body guide column, so that the valve body guide column can tightly seal the valve core at the water outlet. When the washing machine is in the spin-drying mode, the inner drum rotates at high speed. When the centrifugal force between the valve body guide column and the valve core is greater than the pressure given by the spring, the valve body guide column moves towards the axis of the inner drum until the valve core disengages from the water outlet, thus realizing the drainage of the washing machine. Attached Figure Description

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of the drum washing machine of the present invention;

[0019] Figure 2 This is a schematic diagram of the lifting device of the present invention;

[0020] Figure 3 yes Figure 2 Sectional view of AA;

[0021] Figure 4 This is a schematic diagram showing the connection between the balance bar of the lifting device of the present invention and the valve body guide column and the counterweight guide column.

[0022] List of reference numerals in the attached diagram:

[0023] 1. Lifting device; 11. Lifting rib shell; 111. Water passage hole; 12. Bracket; 121. First through hole; 122. Second through hole; 123. Support; 1231. Intermediate rotating shaft; 2. Centrifugal assembly; 21. Valve body guide post; 211. Second connecting lug; 212. Second slide rod; 213. Second boss; 21a. First end of valve body guide post; 21b. Second end of valve body guide post; 22. Valve core; 221. Seal; 2211. Annular sealing rib; 23. Counterweight guide post; 23a. First end of counterweight guide post; 23b. 231. Second end of the guide post; 232. First connecting lug; 233. First slide rod; 234. Boss; 25. Counterweight; 26. Balance bar; 251. First pivot; 2511. First pivot hole; 252. Second pivot; 2521. Second pivot hole; 25a. First end of balance bar; 25b. Second end of balance bar; 26. Elastic element; A. Dimensions of counterweight; B. Dimensions of first through hole; C. Dimensions of valve core; D. Dimensions of second through hole; 3. Washing machine; 31. Inner drum; 311. Door; 312. Water inlet; 32. Outer drum. Detailed Implementation

[0024] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. Those skilled in the art can make adjustments as needed to adapt to specific applications.

[0025] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] like Figure 2-4As shown, to address the problem of reduced service life due to unreasonable centrifugal component design in existing drum washing machines' lifting devices, the lifting device 1 for a drum washing machine 3 of the present invention includes a housing with a cavity structure, such as... Figure 3 As shown, the outer shell includes a cover-shaped lifting rib shell 11 and a bracket 12 disposed at the opening of the lifting rib shell 11. A centrifugal assembly 2 is disposed within the cavity structure. The centrifugal assembly 2 includes a valve body guide post 21, a valve core 22, a counterweight guide post 23, a counterweight 24, a balance bar 25, and an elastic element 26. The middle part of the balance bar 25 is pivotally connected to the inside of the outer shell. The first end 25a of the balance bar is hinged to the first end 23a of the counterweight guide post through a first rotating shaft 251 and a first rotating shaft hole 2511. The second end 23b of the counterweight guide post passes through the first through hole 121 on the outer shell and is connected to the counterweight. The counterweight guide post 23 is slidably disposed within the first through hole 121. An elastic element 26 is disposed between the counterweight guide post 23 and the outer casing to reset the position of the counterweight 24. The second end 25b of the balance bar is hinged to the first end 21a of the valve body guide post via a second rotating shaft 252 and a second rotating shaft hole 2521. The second end 21b of the valve body guide post passes through the second through hole 122 on the outer casing and connects to the valve core 22. The valve body guide post 21 is slidably disposed within the second through hole 122. The first through hole 121 and the second through hole 122 are disposed on the bracket 12. Figure 4 As shown, preferably, the counterweight guide post 23 includes a first connecting lug 231 and a first sliding rod 232 disposed on the first connecting lug 231. The first end of the balance rod 25 is hinged to the first connecting lug 231 through a first rotating shaft 251 and a first rotating shaft hole 2511. A boss 233 is provided between the first connecting lug 231 and the first sliding rod 232. The elastic element 26 is a spring, which is sleeved on the first sliding rod 232, with one end of the spring abutting against the boss 233 and the other end abutting against the inner surface of the bracket 12. Of course, the elastic element 26 can also be other elastic components, such as a leaf spring, an elastic rod, etc. Preferably, the first sliding rod 232 is threadedly connected to the counterweight 24, and the counterweight 24 abuts against the outer surface of the bracket 12. In addition, as Figure 3 As shown, the dimension A of the counterweight 24 is larger than the dimension B of the first through hole 121, and the dimension C of the valve core 22 is larger than the dimension D of the second through hole 122. Figure 4 As shown, the valve body guide post 21 includes a second connecting lug 211 and a second sliding rod 212 disposed on the second connecting lug 211. The second end 25b of the balance rod is hinged to the second connecting lug 211 through a second rotating shaft 252 and a second rotating shaft hole 2521. Alternatively, the valve body guide post 21 can also have a structure similar to that of the counterweight guide post 23, that is, the valve body guide post 21 can also include the following: Figure 3The second boss 213 shown in the figure, the valve core 22 is detachably connected to the second sliding rod 212, a sealing member 221 is further provided on the top of the valve core 22, and an annular sealing rib 2211 is further provided at the bottom of the sealing member 221. A support 123 is provided on the bracket 12, and the middle part of the balance rod 25 is pivotally connected to the support 123 via an intermediate rotating shaft 1231, as Figure 2 , Figure 3 shown in the figures, a water through hole 111 is provided on the lifting rib housing 11.

[0028] As Figure 1 shown in the figure, the present invention further provides a front-loading washing machine 3, the front-loading washing machine 3 comprises an outer tub 32 and an inner tub 31 rotatably provided inside the outer tub 32. The inner tub 31 is provided with a clothes inlet cooperating with a door body 311 of the washing machine 3, a water inlet 312 connected to a water inlet pipe, and a water outlet. The water outlet is provided with the lifting device 1 for the front-loading washing machine 3 according to any one of the above embodiments, and the valve core 22 of the lifting device 1 is provided at the water outlet, such that when the door body 311 is closed, the water inlet 312 is closed, and the valve core 22 blocks the water outlet, the inner tub 31 is a closed chamber; when the door body 311 is closed, the water inlet 312 (not shown in the figure) is closed, and the valve core 22 disengages from the water outlet, the inner tub 31 can drain water normally.

[0029] In the rinsing or washing program stage of the front-loading washing machine 3 of the present invention, the inner tub 31 rotates at a low speed, and the rotation speed V of the inner tub 31 of the washing machine 3 is controlled to be V<V0, wherein V0 is the speed at which the inner tub 31 drives the centrifugal assembly 2 to just open the water outlet during rotation. At this time, the force received by the centrifugal assembly 2 is not enough to disengage it from the water outlet, and clothes are rinsed or washed normally in the completely closed inner tub 31. After the rinsing or washing program is finished, the washing machine 3 enters the dewatering program. During the dewatering process of the washing machine 3, the inner tub 31 rotates at a high speed, and the rotation speed V of the inner tub 31 of the washing machine 3 is controlled to be V≥V0. At this time, the centrifugal assembly 2 disengages from the water outlet under the action of centrifugal force, the inner tub 31 maintains the rotation speed V for a period of time until the water in the inner tub 31 is drained, then the dewatering program of the washing machine 3 ends, the inner tub 31 stops rotating, the centrifugal assembly 2 blocks the water outlet again, and the washing machine is controlled to enter the next program at this time.

[0030] The advantages of the above configuration are as follows: A centrifugal assembly 2 is installed inside the lifting device 1, with the intermediate rotating shaft 1231 of the middle part of the balance bar 25 as the fixed shaft. The support 123 fixes the intermediate rotating shaft 1231 to the bracket 12, allowing the counterweight guide column 23 and the valve body guide column 21, which are respectively hinged at both ends of the balance bar 25, to perform lever movement. The first connecting ear 231 at the first end 23a of the counterweight guide column is connected to the first end 25a of the balance bar, and the second connecting ear 211 at the first end 21a of the valve body guide column is connected to the second end 25b of the balance bar. The design of the connecting ear makes the connection structure less prone to wear and failure. A counterweight 24 is provided at the second end 23b of the counterweight guide column so that the valve body guide column 21 can drive the valve core 22 away from the outlet. A spring is provided on the inner surface of the bracket 12 at the top of the counterweight 24, which can provide preload to the valve core 22. Under the action of the spring, the spring simultaneously applies pressure to the bracket 12 and the boss 233. The pressure causes the counterweight 24 to abut against the outer surface of the bracket 12 under the force of the spring. Simultaneously, the force on the boss 233 is transmitted to the second end 25b of the balance bar, and then to the second end 21b of the valve body guide post. Ultimately, the valve body guide post 21 tightly seals the seal 221 at the bottom of the valve core 22 at the water outlet. When the washing machine 3 is in spin-drying mode, the inner drum 31 rotates at high speed. When the centrifugal force between the valve body guide post 21 and the valve core 22 exceeds the pressure from the spring, the valve body guide post 21... The valve core 22 moves towards the axis of the inner drum 31 until the seal 221 at the bottom of the valve core 22 disengages from the outlet, thus draining the washing machine 3. The first through hole 121 and the second through hole 122 on the bracket 12 provide space for the up and down movement of the counterweight guide column 23 and the valve body guide column 21. At the same time, in order to prevent the counterweight guide column 23 and the valve body guide column 21 from disengaging from the bracket 12 during the movement, causing the centrifugal assembly 2 to fail and thus preventing the outlet from being effectively blocked, the size A of the counterweight 24 is set to be larger than the size B of the first through hole 121, and the size C of the valve core 22 is set to be larger than the size D of the second through hole 122. This setting can also ensure that the valve core 22 works within the range of motion specified in this invention, increasing the safety and effectiveness during use. The lifting rib shell 11 is provided with a water passage hole 111. When the washing machine 3 is in the washing mode, when the lifting device 1 is in the upper part of the inner drum 31, the water in the cavity of the lifting device 1 is sprayed downward through the water passage hole 111. When the washing machine 3 is in the draining mode, the water in the inner drum 31 enters the lifting device 1 through the water passage hole 111 and is finally discharged from the outlet.By threading the first slide rod 232 of the counterweight guide post 23 to the counterweight 24, the preload of the spring on the valve core 22 can be adjusted. When the counterweight 24 is threaded to the middle part of the first slide rod 232, the distance between the bracket 12 and the boss 233 becomes smaller, the pressure on the spring is greater, and the pressure transmitted to the valve core 22 is also greater, so the seal 221 seals the outlet more tightly. When the counterweight 24 is threaded to the bottom of the first slide rod 232, the distance between the bracket 12 and the boss 233 becomes larger, the pressure on the spring is less, and the pressure transmitted to the valve core 22 is less, so the seal 221 seals the outlet more loosely. The threaded connection between the counterweight 24 and the counterweight guide post 23 allows the degree of sealing of the outlet to be adjusted by adjusting the counterweight 24.

[0031] The inner drum 31 of the drum washing machine 3 of the present invention is only provided with a water inlet 312, a water outlet and a clothes inlet. There is no need to fill the inner and outer drums 32 with washing and rinsing water before washing and during washing. This configuration greatly reduces the washing water consumption of the washing machine 3 and avoids the possibility of dirt adhering between the inner and outer drums 32.

[0032] like Figure 3 As shown, in one possible implementation, the counterweight 24 and the counterweight guide post 23 are either separately configured or integrally formed, the valve body guide post 21 and the valve core 22 are either separately configured or integrally formed, and the detachable connection can be configured as a threaded connection or a snap-fit ​​connection.

[0033] The advantages of the above setup method are: Figure 3 The valve body guide post 21 and valve core 22 are detachably connected by threads, and the counterweight 24 and counterweight guide post 23 are detachably connected by threads. This detachable connection method facilitates the replacement of accessories and prevents the replacement of all matching parts when a certain part is damaged during use. The detachable connection method also includes snap-fit ​​connection (not shown in the figure). The counterweight 24 and counterweight guide post 23 are integrally formed, and the valve body guide post 21 and valve core 22 are integrally formed, which can reduce the number of parts and reduce the assembly difficulty.

[0034] In summary, a centrifugal assembly 2 is installed inside the lifting device 1, with the central pivot 1231 of the middle part of the balance bar 25 as the fixed axis. This allows the counterweight guide column 23 and the valve body guide column 21, which are respectively hinged at both ends of the balance bar 25, to perform lever motion. The counterweight 24 installed at the second end 23b of the counterweight guide column can cause the valve body guide column 21 to drive the valve core 22 away from the water outlet. A spring is installed on the inner surface of the bracket 12 at the top of the counterweight 24, which can provide pre-pressure for the valve core 22. Ultimately, the valve body guide column 21 tightly seals the sealing element 221 at the bottom of the valve core 22 at the water outlet. When the washing machine 3 is in the spin-drying mode, when the centrifugal force between the valve body guide column 21 and the valve core 22 is greater than the pressure given by the spring, the valve body guide column 21 moves towards the axis of the inner drum 31 until the valve core 22... The bottom seal 221 is disconnected from the water outlet to allow the washing machine 3 to drain. To prevent the counterweight guide column 23 and the valve body guide column 21 from detaching from the bracket 12 during their movement, the size A of the counterweight 24 is set to be larger than the size B of the first through hole 121, and the size C of the valve core 22 is set to be larger than the size D of the second through hole 122. The first slide rod 232 of the counterweight guide column 23 is threadedly connected to the counterweight 24, which can adjust the pre-pressure of the spring on the valve core 22. When the counterweight 24 is connected to the middle part of the first slide rod 232, the pressure on the spring increases, and the pressure transmitted to the valve core 22 is also greater, so the seal 221 seals the water outlet more tightly. When the counterweight 24 is connected to the bottom of the first slide rod 232, the pressure on the spring decreases, and the pressure transmitted to the valve core 22 is even smaller, so the seal 221 seals the water outlet more loosely. Ultimately, the degree of sealing of the water outlet can be adjusted by adjusting the counterweight 24.

[0035] It should be noted that the above embodiments are merely used to illustrate the principles of the present invention and are not intended to limit the scope of protection of the present invention. Without departing from the principles of the present invention, those skilled in the art can adjust the above structure so that the present invention can be applied to more specific application scenarios.

[0036] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A lifting device for a drum washing machine, characterized in that, The lifting device includes a shell with a cavity structure, and a centrifugal assembly is provided inside the cavity structure. The centrifugal assembly includes a valve body guide column, a valve core, a counterweight guide column, a counterweight, a balance bar, and an elastic element. The middle portion of the balance bar is pivotally connected to the inside of the housing; The first end of the balance bar is hinged to the first end of the counterweight guide post, and the second end of the counterweight guide post passes through the first through hole on the outer shell and is connected to the counterweight. The counterweight guide post is slidably disposed in the first through hole. The elastic element is disposed between the counterweight guide post and the outer shell, and is used to reset the position of the counterweight; The second end of the balance bar is hinged to the first end of the valve body guide post. The second end of the valve body guide post passes through the second through hole on the outer shell and is connected to the valve core. The valve body guide post is slidably disposed in the second through hole. The outer casing includes a cap-shaped lifting rib shell and a bracket disposed at the opening of the lifting rib shell, wherein the first through hole and the second through hole are disposed on the bracket; The counterweight guide column includes a first connecting lug and a first sliding rod disposed on the first connecting lug. The first end of the balance bar is hinged to the first connecting lug. A boss is provided between the first connecting lug and the first sliding rod. The elastic element is a spring. The spring is sleeved on the first sliding rod, and one end of the spring abuts against the boss, while the other end abuts against the inner surface of the bracket.

2. The lifting device for a drum washing machine according to claim 1, characterized in that, The first slide bar is threadedly connected to the counterweight, and the counterweight abuts against the outer surface of the bracket.

3. The lifting device for a drum washing machine according to claim 1, characterized in that, The counterweight is larger than the first through hole; and / or the valve core is larger than the second through hole.

4. The lifting device for a drum washing machine according to claim 1, characterized in that, The valve body guide post includes a second connecting lug and a second slide rod disposed on the second connecting lug. The second end of the balance rod is hinged to the second connecting lug. The valve core is detachably connected to the second slide rod. A sealing element is also disposed on the top of the valve core.

5. The lifting device for a drum washing machine according to claim 4, characterized in that, The bottom of the seal is also provided with an annular sealing rib.

6. The lifting device for a drum washing machine according to claim 1, characterized in that, The bracket is provided with a support, and the middle part of the balance bar is pivotally connected to the support; and / or, the lifting rib shell is provided with a water passage hole.

7. The lifting device for a drum washing machine according to claim 1, characterized in that, The counterweight component and the counterweight guide post are either separately configured or integrally formed; and / or, the valve body guide post and the valve core are either separately configured or integrally formed.

8. A drum washing machine, characterized in that, The drum washing machine includes an outer drum and an inner drum that is rotatably disposed inside the outer drum. The inner drum is provided with a clothes inlet that cooperates with the washing machine door, a water inlet connected to a water inlet pipe, and a water outlet. The water outlet is provided with a lifting device for the drum washing machine as described in any one of claims 1-7. The valve core of the lifting device is disposed at the water outlet so that when the door is closed, the water inlet is closed, and the valve core blocks the water outlet, the inner drum is a sealed chamber. When the door is closed, the water inlet is closed, and the valve core disengages from the water outlet, the inner drum can drain water normally.

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