Drum washing machine

Abstract

The present invention belongs to the technical field of washing equipment, and aims to solve the problem that the existing drum washing machine is inconvenient to clean. To this end, the present invention provides a drum washing machine, which includes: a housing; a fixing device; a washing drum, which is rotatably arranged in the fixing device, and the first end of the washing drum is provided with a clothing delivery port and a drum door; a water supply and drainage device, which is connected to the second end of the washing drum; a linkage device, which is arranged between the machine door and the drum door, and the linkage device is arranged to enable the drum door to be opened or closed together with the machine door, and to allow the drum door to rotate relative to the machine door when the washing drum rotates. By eliminating the outer drum of the washing machine, only one washing drum is retained to accommodate the items to be washed and the washing water. Therefore, only the inside of the washing drum needs to be cleaned, which is very convenient. In addition, by arranging a linkage device between the machine door and the drum door, the drum door can be punched or closed together with the machine door, which helps to improve the user experience.

Description

Technical Field

[0001] The invention belongs to the technical field of washing equipment, and specifically provides a drum washing machine. Background Art

[0002] A washing machine is a cleaning appliance that utilizes electrical energy to generate a mechanical action to wash clothes. Current washing machines mainly include pulsator type washing machines and drum type washing machines.

[0003] The existing drum washing machine mainly includes a housing, an outer drum, an inner drum and a driving device arranged in the housing. The inner drum is rotatably arranged in the outer drum, and the driving device can drive the inner drum to rotate. After a period of use, a lot of impurities will be adhered to the outer wall of the inner drum and the inner wall of the outer drum. In a closed and humid environment, bacteria are easily bred, affecting the health of users. Therefore, the washing machine needs to be cleaned regularly.

[0004] However, a drum washing machine requires professional after-sales personnel to perform a relatively thorough cleaning, and ordinary consumers cannot complete a good cleaning job. Since the drum washing machine is designed so that people cannot easily disassemble the inner and outer drums, it is impossible to thoroughly clean the inner and outer drums.

[0005] The patent with publication number CN206266882U discloses a washing machine, comprising: a base, a washing tub, a driving member, a door body, a locking device, a water inlet pipe and a drain pipe, wherein the washing tub is rotatably arranged on the base around a horizontal rotation center axis; a clothing access opening connected to a washing chamber is formed on the peripheral wall of the washing tub, one end of the door body is pivotally arranged on the peripheral wall of the washing tub, and the door body is used to open and close the clothing access opening; one end of the water inlet pipe extends into the washing chamber and the other end extends out of the washing chamber, one end of the water inlet pipe is provided with a nozzle extending upward, the nozzle is in the shape of a hollow tube with a closed upper end and a plurality of water spray holes are formed on the peripheral wall of the nozzle; one end of the drain pipe extends into the washing chamber and the other end extends out of the washing chamber, at least a portion of one end of the drain pipe extends in a vertical downward direction, and a plurality of water holes are formed at the lower end of the drain pipe. That is to say, the patent discloses a drum washing machine without an outer drum, but the clothing loading and unloading port of the washing machine is arranged on the peripheral wall of the washing drum. This arrangement has three very serious disadvantages. The first disadvantage is that in order to smoothly open the door body located on the washing drum, the washing drum needs to be positioned very accurately. Therefore, a precise positioning device needs to be provided on the washing machine, which increases the cost of the washing machine. In addition, even if the positioning device is installed, it is easy for the door body to fail to align, resulting in the door body failing to open smoothly, affecting the user's experience; the second disadvantage is that most of the current drum washing machines are placed in an embedded manner, but if the door body is set on the top of the washing machine, the washing machine cannot be placed in an embedded manner; third, current users are not accustomed to this top-opening drum washing machine, and most users are still accustomed to using front-opening drum washing machines. Therefore, this washing machine is not the mainstream of the market and its sales prospects are not ideal.

[0006] Therefore, the art needs a new drum washing machine to solve the above problems. Summary of the invention

[0007] In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the existing drum washing machine is inconvenient to clean, the present invention provides a drum washing machine, comprising a casing, a machine door is arranged on one side of the casing, and the drum washing machine also comprises: a fixing device, which is arranged in the casing; a washing drum, which is rotatably arranged in the fixing device, the washing drum is used to accommodate items to be washed and washing water, and the first end of the washing drum is provided with a clothing introduction port and a drum door, and the drum door is used to open or close the clothing introduction port; a water supply and drainage device, which is connected with the second end of the washing drum so as to supply water to the washing drum or drain the water in the washing drum; and a linkage device, which is arranged between the machine door and the drum door, and the linkage device is configured to enable the drum door to be opened or closed together with the machine door, and to allow the drum door to rotate relative to the machine door when the washing drum rotates.

[0008] In the preferred technical solution of the above-mentioned drum washing machine, the linkage device includes an arc-shaped connecting rod, a guide rod and a roller, an annular slide groove is formed on the drum door, the guide rod is arranged on the machine door, the first end of the arc-shaped connecting rod is slidingly connected to the guide rod, the roller is rotatably connected to the second end of the arc-shaped connecting rod, and the roller is located in the annular slide groove.

[0009] In the preferred technical solution of the above-mentioned drum washing machine, the linkage device also includes an electromagnetic component and a first iron component, one of the electromagnetic component and the first iron component is arranged on the arc-shaped connecting rod, and the other of the electromagnetic component and the first iron component is arranged on the machine door, and the electromagnetic component cooperates with the first iron component to enable the arc-shaped connecting rod to rotate with the guide rod as the axis so as to separate or engage the roller with the annular slide groove.

[0010] In the preferred technical solution of the above drum washing machine, the first iron component is arranged on the arc-shaped connecting rod and close to the second end of the arc-shaped connecting rod, and the electromagnetic component is arranged on the machine door.

[0011] In the preferred technical solution of the above-mentioned drum washing machine, a magnetic push-pop switch is provided on the machine door and / or the drum door, and the magnetic push-pop switch is configured to be able to be adsorbed to the housing and / or the washing drum to keep the machine door and / or the drum door in a closed state, and to drive the machine door and / or the drum door to pop open together when the adsorption is released.

[0012] In the preferred technical solution of the above-mentioned drum washing machine, a magnetic push-pop switch is provided on the drum door, and the magnetic push-pop switch is configured to be able to be adsorbed onto the washing drum to keep the drum door closed, and to drive the drum door to pop open together when the adsorption is released.

[0013] In the preferred technical solution of the above-mentioned drum washing machine, the magnetic push-pop switch includes a base, a first electromagnetic suction cup, a second electromagnetic suction cup, a second iron component, an elastic component and a movable component, the second electromagnetic suction cup is arranged opposite to the second iron component, and one of the second electromagnetic suction cup and the second iron component is connected to the base, the other of the second electromagnetic suction cup and the second iron component is connected to one end of the movable component, the other end of the movable component is connected to the first electromagnetic suction cup, the movable component can move relative to the base, one end of the elastic component is connected to the base, the other end of the elastic component is connected to the movable component, the first electromagnetic suction cup can be adsorbed onto the washing drum to keep the drum door closed, and at this time the first electromagnetic suction cup and the second iron component are in an attracted state to keep the elastic component in a compressed state.

[0014] In the preferred technical solution of the above-mentioned drum washing machine, the water inlet and outlet device includes a first water inlet and outlet assembly, an adapter, and a second water inlet and outlet assembly which are connected in sequence, the first water inlet and outlet assembly is connected to the second end of the washing drum, the second water inlet and outlet assembly is connected to the outside, the adapter is installed on the fixing device, and the first water inlet and outlet assembly and the part of the adapter connected to the first water inlet and outlet assembly can rotate with the washing drum.

[0015] In the preferred technical solution of the above-mentioned drum washing machine, a plurality of water-passing structures are arranged along the circumference of the washing drum, the first water inlet and outlet assembly includes a first water pipe and a water collecting member, the number of the first water pipes is multiple, one end of the water collecting member is provided with a plurality of water diversion ports, the other end of the water collecting member is provided with a central port, the plurality of water diversion ports are all connected with the central port, the first end of the first water pipe is connected with the corresponding water-passing structure, the second end of the first water pipe is connected with the corresponding water diversion port, and the central port is connected with the adapter.

[0016] In the preferred technical solution of the above-mentioned drum washing machine, the adapter is a rotating tee, which includes a rotating port and two fixed ports, the second water inlet and outlet assembly includes an inlet pipe and a outlet pipe, the rotating port is connected to the first water inlet assembly, one of the two fixed ports is connected to the water inlet pipe, and the other of the two fixed ports is connected to the outlet pipe.

[0017] It can be understood by those skilled in the art that in the preferred technical solution of the present invention, the drum washing machine has no outer drum, but only a washing drum for accommodating items to be washed and washing water. Therefore, it is only necessary to clean the inside of the washing drum, which is very convenient. Moreover, compared with the washing machine disclosed in the patent with publication number CN206266882U, the washing machine of the present invention opens the clothing inlet at the front end of the washing drum. First, no matter where the washing drum stops, the drum door on the washing drum is aligned with the opening on the box body, and there will be no situation where the drum door cannot be opened. Secondly, the front-opening style is adopted, which is very consistent with the usage habits of most users, and the washing machine can be placed in an embedded manner to save space. In addition, by arranging a linkage device between the machine door and the drum door, the drum door can be punched or closed together with the machine door, which helps to improve the user experience.

[0018] Furthermore, the linkage device includes an arc-shaped connecting rod, a guide rod and a roller, an annular slide groove is formed on the drum door, the guide rod is arranged on the machine door, the first end of the arc-shaped connecting rod is slidably connected to the guide rod, the roller is rotatably connected to the second end of the arc-shaped connecting rod, and the roller is located in the annular slide groove. Through such an arrangement, the drum door can rotate with the washing drum while being connected to the linkage device, which has good reliability and is not prone to failures that cause the drum door to be unable to rotate.

[0019] Furthermore, the linkage device further includes an electromagnetic component and a first iron component, one of the electromagnetic component and the first iron component is arranged on the arc connecting rod, and the other of the electromagnetic component and the first iron component is arranged on the machine door, and the electromagnetic component cooperates with the first iron component to enable the arc connecting rod to rotate with the guide rod as the axis, so as to separate or engage the roller with the annular chute. Through such an arrangement, when the washing machine is running, the roller can be separated from the annular chute to reduce noise.

[0020] Furthermore, a magnetic push-open switch is provided on the machine door and / or the drum door, and the magnetic push-open switch is configured to be able to be adsorbed to the cabinet and / or the drum to keep the machine door and / or the drum door closed, and to drive the machine door and / or the drum door to pop open together when the adsorption is released. With such a configuration, when the door needs to be opened, the machine door and the drum door can automatically pop open without manual operation by the user, which helps to improve the user experience.

[0021] Furthermore, the water inlet and outlet device includes a first water inlet and outlet assembly, an adapter, and a second water inlet and outlet assembly which are connected in sequence, the first water inlet and outlet assembly is connected to the second end of the washing drum, the second water inlet and outlet assembly is connected to the outside, the adapter is installed on the fixing device, and the first water inlet and outlet assembly and the part of the adapter connected to the first water inlet and outlet assembly can rotate with the washing drum.

[0022] As can be seen from the background technology, the washing machine disclosed in the patent with publication number CN206266882U directly extends the water inlet pipe and the drain pipe into the washing tub. This arrangement has two very serious disadvantages. The first disadvantage is that it is easy to cause water leakage in the washing tub, thereby causing a safety accident. Specifically, in order to extend the water pipe into the washing cavity, it is necessary to open a hole in the barrel wall of the washing tub to allow the water pipe to pass through, but the water pipe is fixed, that is, the water pipe and the washing tub are to rotate relative to each other. Therefore, it is difficult to seal the gap between the water pipe and the hole. During the rotation of the washing tub, the water in the washing tub will flow out along the gap between the water pipe and the hole; the second disadvantage is that the clothes in the washing tub and the water pipe will collide with each other, making the clothes and the water pipe easily damaged.

[0023] Compared with the washing machine disclosed in the patent with publication number CN206266882U, in the washing machine of the present invention, when the washing drum rotates, the first water inlet and outlet assembly can rotate synchronously with the washing drum. In this way, it is only necessary to open a water through hole on the washing drum to connect the first water inlet and outlet assembly with the water through hole. The first water inlet and outlet assembly does not need to extend into the interior of the washing drum, so there will be no water leakage and the clothes in the washing drum will not collide with the water pipe.

[0024] Furthermore, multiple water-passing structures are arranged along the circumference of the washing drum, and the first water inlet and outlet assembly includes a first water pipe and a water collecting member. There are multiple first water pipes, and one end of the water collecting member is provided with multiple water diversion ports, and the other end of the water collecting member is provided with a central port. The multiple water diversion ports are all connected to the central port. The first end of the first water pipe is connected to the corresponding water-passing structure, and the second end of the first water pipe is connected to the corresponding water diversion port, and the central port is connected to the adapter. Through such an arrangement, when draining water, water can be discharged simultaneously through multiple first water pipes. Similarly, when inletting water, water can be inletted simultaneously through multiple first water pipes, which can greatly improve the water inlet and outlet capacity of the washing machine and reduce the washing time. The alternating water flow can also greatly reduce the deposition of impurities on the pipe wall.

[0025] Furthermore, the water-passing structure is a water-passing port formed at the junction of the rear wall of the washing drum and the inner wall of the washing drum. This arrangement is more conducive to draining the water in the washing drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0027] Figure 1 The structure of the drum washing machine of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 2 The structure of the drum washing machine of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 3 The structure of the drum washing machine of the present invention is shown in FIG. Figure 3 ;

[0030] Figure 4 It is a structural schematic diagram of a fixing device of a drum washing machine of the present invention;

[0031] Figure 5 The structure of the drum washing machine of the present invention is shown in FIG. Figure 1 ;

[0032] Figure 6 It is a schematic diagram of the assembly of the first water pipe and the water collecting member of the drum washing machine of the present invention;

[0033] Figure 7 It is a structural schematic diagram of a water collecting member of a drum washing machine of the present invention;

[0034] Figure 8 It is a schematic diagram of the assembly of the rotating shaft, the cylindrical structure and the adapter of the drum washing machine of the present invention;

[0035] Fig. 9 is a schematic structural diagram of a connecting member of a drum washing machine of the present invention;

[0036] Fig.10 It is a schematic diagram of the positional relationship between the door and the drum door of the drum washing machine of the present invention;

[0037] Fig.11 It is a structural schematic diagram of a door of a drum washing machine of the present invention;

[0038] Fig.12 yes Fig.11 Right view at A in the middle;

[0039] Fig.13 The structure of the drum washing machine of the present invention is shown in FIG. Figure 2 ;

[0040] Fig.14 It is a structural schematic diagram of a magnetic push-open switch of a drum washing machine of the present invention.

[0041] List of reference numerals:

[0042] 1. Box; 11. Door; 2. Washing drum; 21. Drum; 22. Rotating shaft; 23. Connecting member; 24. Bearing; 25. Drum door; 251. Annular slide; 211. Clothes inlet; 212. Water outlet; 213. Water collecting ring; 214. Water guide groove; 215. Annular slot; 221. Passage; 231. Drum body; 232. Connecting arm; 2321. Strip; 2322. Reinforcement member; 31. Motor; 32. Belt; 33. Pulley; 41. Suspension spring; 42. Damper; 51. Main frame; 52. Roller; 511. Drum structure; 512. Crossbeam; 513. Upper accommodating area; 514. Lower accommodating area; 61. First Water pipe; 62, water collecting part; 63, connecting pipe; 64, rotating tee; 65, water inlet pipe; 66, drainage pipe; 67, drainage pump; 621, water distribution port; 641, rotating port; 642, fixed port; 71, connecting chamber; 72, accommodating chamber; 73, spherical structure; 81, arc connecting rod; 82, guide rod; 83, roller; 84, electromagnetic component; 85, first iron component; 9, magnetic push switch; 91, base; 92, first electromagnetic suction cup; 93, second electromagnetic suction cup; 94, second iron component; 95, elastic component; 96, movable component; 97, limiting component; 911, first chamber; 912, second chamber; 913, partition. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0044] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] like Figures 1 to 3 As shown, the drum washing machine of the present invention comprises a housing 1, the front side of the housing 1 (from Figure 1 A door 11 is arranged on the left side of the box body when viewed from above, and a fixing device, a washing drum 2, a driving device, a water inlet and outlet device and a vibration reduction and damping device are arranged in the box body 1.

[0047] Continue reading Figures 1 to 3 The washing drum 2 is used to contain the items to be washed and the washing water. The front end of the washing drum 2 (from Figure 1 A clothing inlet 211 is formed at the left end of the washing drum 2 (as viewed from above), through which the user can put the clothes to be washed into the washing drum 2, and take the washed clothes out of the washing drum 2 through the clothing inlet 211.

[0048] Continue reading Figures 1 to 3 The washing drum 2 is rotatably arranged in the fixing device, and the driving device is connected to the rear end of the washing drum 2 (from Figure 1 The washing machine is driven and connected to the washing drum 2 (the right end of the washing drum 2 as seen from above). When the washing machine is running, the driving device can drive the washing drum 2 to rotate. The washing drum 2 has a rotating shaft 22 at the rear end, and the washing drum 2 is rotatably connected to the fixing device through the rotating shaft 22. For example, the driving device includes a motor 31, a belt 32 and a pulley 33, wherein the pulley 33 is fixedly connected to the rotating shaft 22, one end of the belt 32 is connected to the output shaft of the motor 31, and a small pulley is generally installed on the output shaft of the motor 31, one end of the belt 32 is connected to the small pulley, and the other end of the belt 32 is connected to the pulley 33 installed on the rotating shaft 22, and the motor 31 drives the pulley 33 and the rotating shaft 22 to rotate through the belt 32.

[0049] It should be noted that the driving device is not limited to the above-mentioned specific examples. For example, a direct-drive motor can also be used for driving. The stator device of the direct-drive motor can be installed on the fixing device, and the rotor of the direct-drive motor can be installed on the rotating shaft 22. Such adjustments and changes to the specific structural form of the driving device do not deviate from the principle and scope of the present invention, and should be limited within the protection scope of the present invention.

[0050] Continue reading Figures 1 to 3 The water supply and drainage device is connected to the rear end of the washing tub 2, through which water can be supplied to the washing tub 2 or the water in the washing tub 2 can be drained.

[0051] Continue reading Figures 1 to 3 The vibration damping device is arranged between the fixing device and the housing 1, and the vibration is reduced by the vibration damping device to reduce the vibration noise of the washing machine. The vibration damping device includes a suspension spring 41 and a damper 42, the top of the fixing device is fixedly connected to the housing 1 through the suspension spring 41, and the bottom of the fixing device is fixedly connected to the housing 1 through the damper 42.

[0052] like Figures 1 to 4 As shown, the fixing device includes a main frame 51, and the washing drum 2 is rotatably arranged in the main frame 51. The rotating shaft 22 is connected to the rear end of the main frame 51 (from Figure 1 By installing the washing tub 2 in the main frame 51, a portion of the washing tub 2 can be extended to the outside of the main frame 51 (such as Figure 2 and Figure 3 As shown), in this way, the size of the washing drum 2 can be expanded as much as possible, and because there is only one washing drum 2, the washing capacity of the washing machine is increased without changing the outer dimensions.

[0053] Continue reading Figure 4 A support structure is provided at the rear end of the main frame 51, and the rotating shaft 22 is rotatably connected to the support structure. The supporting structure is a cylindrical structure 511. The rotating shaft 22 can be inserted into the cylindrical structure 511, and the two are connected by a bearing so that the rotating shaft 22 can rotate relative to the cylindrical structure 511.

[0054] Continue reading Figure 2 and Figure 4The fixing device further includes a plurality of rollers 52 arranged on the main frame 51. When the installation is completed, the plurality of rollers 52 abut against the outer wall of the washing tub 2. Exemplarily, the main frame 51 includes four crossbeams 512 arranged along the axial direction of the washing tub 2. A roller 52 is installed on each crossbeam 512, and the roller 52 is arranged near the front end of the main frame 51. By arranging the rollers 52 to support the front end of the washing tub 2, the pressure of the rear end of the washing tub 2 on the rotating shaft 22 can be greatly reduced, thereby reducing the design difficulty and processing cost of the rotating shaft 22 and extending the service life of the rotating shaft 22.

[0055] Continue reading Figure 4 The main frame 51 includes two accommodating areas, which are arranged in the vertical direction, and are marked as an upper accommodating area 513 and a lower accommodating area 514, wherein the washing drum 2 is located in the upper accommodating area 513.

[0056] like Figure 5 As shown, a water-passing structure is formed at the rear end of the washing drum 2, and the water inlet and outlet device is connected to the water-passing structure, through which water can be supplied to the washing drum 2 or the water in the washing drum 2 can be discharged. Preferably, the water-passing structure is a water-passing port 212 formed at the junction of the rear wall and the inner wall of the washing drum 2. By arranging the water-passing port 212 at the junction of the rear wall and the inner wall of the washing drum, it is more conducive to draining the water in the washing drum 2.

[0057] Continue reading Figure 5 A water collecting ring 213 is formed on the inner wall of the washing drum 2, and the water collecting ring 213 is connected with the water opening 212. As can be seen from the figure, the water collecting ring 213 is a groove-shaped structure on the inner wall of the washing drum 2, along the radial direction of the washing drum 2, and convex outwardly of the drum, so that the bottom diameter of the water collecting ring 213 is larger than the diameter of the inner wall of the washing drum 2. In this way, the water in the washing drum 2 will gather to the water collecting ring 213 during rotation, which is conducive to draining the water in the washing drum 2.

[0058] Continue reading Figure 5 A plurality of water guide structures are also provided on the inner wall of the washing tub 2. The water guide structures extend along the axial direction of the washing tub 2, and the rear end of the water guide structures (from Figure 5 The right end of the water guide structure (as seen from above) is connected to the water collecting circle 213. By providing the water guide structure on the inner wall of the washing drum 2, it is beneficial for the water in the washing drum 2 to be collected to the water collecting circle 213, especially when the washing drum 2 is rotating, for example, when the washing machine performs a dehydration program, the water in the water guide structure on the inner wall of the washing drum can be directly and quickly collected to the water collecting circle 213 along the water guide structure without being blocked by the clothes, which can greatly improve the dehydration capacity of the washing machine.

[0059] Continue reading Figure 5, the water guide structure is a water guide groove 214 formed on the inner wall of the washing tub. In other words, the water guide structure is a strip groove structure that protrudes outward from the inner wall of the washing tub 2 along the radial direction of the washing tub 2. Of course, a plurality of strip convex ribs that protrude inward can also be formed on the inner wall of the washing tub 2 along the radial direction of the washing tub 2, so that a water guide structure can also be formed between two adjacent strip convex ribs. Preferably, the water guide groove 214 can be combined with the strip convex ribs, and the two structures can be arranged at intervals, which can further improve the drainage efficiency.

[0060] Continue reading Figure 5 The inner diameter of the front end of the washing tub 2 is smaller than the inner diameter of the rear end of the washing tub 2. By such an arrangement, it is more conducive to the water in the washing tub 2 to flow to the water inlet 212.

[0061] Continue reading Figure 5 The washing drum 2 has a drum door 25 (see Fig.13 ), the front end of the washing drum 2 is provided with a fixed structure protruding outward, and the drum door 25 is installed on the fixed structure. Among them, the fixed structure is an annular groove 215 formed on the washing drum 2, and the drum door 25 is fixedly connected with the annular groove 215.

[0062] like Figure 1 , Figure 3 , Figure 6 and Figure 8 As shown, the water inlet and outlet device includes a first water inlet and outlet assembly, an adapter, and a second water inlet and outlet assembly which are connected in sequence, wherein the first water inlet and outlet assembly is connected to a water outlet 212 formed at the rear end of the washing drum 2, that is, the first water inlet and outlet assembly does not need to extend into the interior of the washing drum 2, and the second water inlet and outlet assembly is connected to the outside, and the adapter is installed on a tubular structure 511 arranged at the rear end of the fixing device.

[0063] When the washing tub 2 rotates, the first water inlet and water outlet assembly and the portion of the adapter connected to the first water inlet and water outlet assembly can rotate with the washing tub 2, and the second water inlet and water outlet assembly and the portion of the adapter connected to the second water inlet and water outlet assembly are fixed.

[0064] That is to say, the water inlet and outlet device includes three core structures, namely, a first water inlet and outlet assembly connected to the washing drum 2, a second water inlet and outlet assembly connected to the outside world, and an adapter for connecting the first water inlet and outlet assembly and the second water inlet and outlet assembly. The key to the three core structures lies in the adapter. Specifically, the adapter itself includes two parts. The first part is connected to the first water inlet and outlet assembly, and the second part is connected to the second water inlet and outlet assembly. The two parts of the adapter can rotate relative to each other, and the second part is installed on a fixing device. In this way, when the washing drum 2 rotates, the first water inlet and outlet assembly and the first part of the adapter can rotate with the washing drum 2. The second water inlet and outlet assembly is connected to the outside world and needs to be kept fixed.

[0065] Continue reading Figure 1 , Figure 3 and Figure 8 The adapter is preferably configured as a rotating tee 64, which includes a rotating port 641 and a fixed port 642, wherein the rotating port 641 is connected to the first inlet and outlet assembly and can rotate with the first inlet and outlet assembly, and there are two fixed ports 642. The second inlet and outlet assembly includes an inlet pipe 65 and a drain pipe 66. One of the two fixed ports 642 is a water inlet, which is connected to the inlet pipe 65. The other end of the inlet pipe 65 is connected to an external water supply source. The other fixed port 642 is a water outlet, which is connected to the drain pipe 66. The other end of the drain pipe 66 is connected to a drain pump 67.

[0066] Continue reading Figures 5 to 8 The first water inlet and outlet assembly includes a first water pipe 61, a water collecting member 62 and a connecting pipe 63 which are connected in sequence, wherein the number of the first water pipe 61 can be more than one. Exemplarily, the number of the first water pipes 61 is three, and correspondingly, the number of the water outlets is also three, and the three water outlets 212 are arranged along the circumference of the washing drum 2, the first end of the first water pipe 61 is connected to the corresponding water outlet 212, one end of the water collecting member 62 is provided with a water diversion port 621, and the number of the water diversion ports 621 is three, the second end of the first water pipe 61 is connected to the corresponding water diversion port 621, and the other end of the water collecting member 62 is provided with a central port (not shown in the figure), and the multiple water diversion ports 621 are all connected to the central port, and the central port of the water collecting member 62 is connected to the rotating port 641 of the rotating tee 64 through the connecting pipe 63. In this way, the three first water pipes 61 are connected to the rotating tee 64 through the water collecting member 62 and the connecting pipe 63.

[0067] The three first water pipes 61 are connected through the water collecting part 62. When draining water, the water can be discharged through the three first water pipes 61 at the same time. Similarly, when filling water, the water can be filled in through the three first water pipes 61 at the same time. Through such an arrangement, the water filling and drainage capacity of the washing machine can be greatly improved and the washing time can be reduced.

[0068] It should be noted that, in actual applications, technicians in this field can cancel the connection pipe 63 as needed, and directly connect the water collecting part 62 with the rotating tee 64. Such flexible adjustment and change does not deviate from the principle and scope of the present invention and should be limited within the protection scope of the present invention.

[0069] Continue reading Figure 8, a channel 221 is provided in the rotating shaft 22, and the first water inlet and outlet assembly is connected with the rotating tee 64 by means of the channel 221 and the cylindrical structure 511. Among them, the inner diameter of the channel 221 can be larger than the outer diameter of the cylindrical structure 511. In this case, when installing, the cylindrical structure 511 can be inserted into the channel 221 of the rotating shaft 22; conversely, the inner diameter of the cylindrical structure 511 can also be larger than the outer diameter of the rotating shaft 22. In this case, when installing, the rotating shaft 22 can be inserted into the cylindrical structure 511. It is preferred that the inner diameter of the channel 221 is larger than the outer diameter of the cylindrical structure 511. When installing, the cylindrical structure 511 is inserted into the channel 221 of the rotating shaft 22, and the two are connected by a bearing 24 so that the two can rotate relative to each other.

[0070] like Figure 5 , Figure 8 and Fig. 9 As shown, the washing drum 2 includes a drum body 21, a rotating shaft 22 and a connecting member 23, wherein the drum body 21 is used to accommodate items to be washed and washing water, a clothing inlet 211, a water outlet 212, a water collecting ring 213, a water guide groove 214 and an annular groove 215 are all formed on the drum body 21, and one end of the connecting member 23 is connected to the rear end of the drum body 21 (from Figure 5 The other end of the connecting member 23 is connected to the rotating shaft 22. In other words, the rotating shaft 22 is fixedly connected to the cylinder 21 through the connecting member 23, and the driving device drives the rotating shaft 22 to rotate, and the rotating shaft 22 drives the cylinder 21 to rotate synchronously through the connecting member 23.

[0071] The connecting member 23 includes a connected cylindrical body 231 and a connecting arm 232, wherein there are multiple connecting arms 232, illustratively, there are three connecting arms 232, and the three connecting arms 232 are arranged along the circumference of the cylindrical body 231, preferably evenly arranged along the circumference of the cylindrical body 231. The connecting arms 232 and the cylindrical body 231 can be fixedly connected or integrally arranged. During installation, the rotating shaft 22 can be inserted into the cylindrical body 231, and the two preferably adopt an interference fit.

[0072] Continue reading Figure 5 , Figure 8 and Fig. 9 When the installation is completed, the connecting arm 232 is fixedly connected to the rear end of the cylinder 21, the rotating shaft 22 is fixedly connected to the cylindrical body 231 of the connecting member 23, and there is a certain gap between the end of the rotating shaft 22 and the rear end of the cylinder 21, and the second end of the first water pipe 61 can enter the channel 221 of the rotating shaft 22 through the gap.

[0073] Specifically, when the installation is completed, the water collecting piece 62 can be fixed on the cylindrical body 231 of the connecting member 23, so that the water collecting piece 62 is located in the gap between the rotating shaft 22 and the cylindrical body 21, and the water diversion port 621 of the water collecting piece 62 is facing the cylindrical body 21, and the concentration port of the water collecting piece 62 is facing the channel 221 of the rotating shaft 22. In this way, the second end of the first water pipe 61 can be directly connected to the corresponding water diversion port 621, the connecting pipe 63 is located inside the channel 221 and the cylindrical structure 511, the concentration port of the water collecting piece 62 is connected to the left end of the connecting pipe 63, the rotating tee 64 is fixed on the cylindrical structure 511, and the rotating port 641 of the rotating tee 64 is extended into the cylindrical structure 511, and the right end of the connecting pipe 63 is connected to the rotating port 641, and the rotating port 641 of the rotating tee 64, the connecting pipe 63, the water collecting piece 62 and the first water pipe 61 can rotate synchronously with the cylindrical body 21. Of course, the water collecting member 62 may also be fixedly connected to the rotating shaft 22 , and the water collecting member 62 may be installed in the channel 221 of the rotating shaft 22 .

[0074] The three first water pipes 61 can simultaneously take in water and simultaneously drain water. When draining water, in order to prevent air leakage, the washing tub 2 can be kept in a rotating state, and under the action of centripetal force, the washing water is evenly distributed along the water collecting circle 213, so that all three water inlets 212 are immersed in water, thereby improving the drainage capacity of the washing machine and reducing the overall washing time.

[0075] Continue reading Fig. 9 The structures of the three connecting arms 232 are the same. Taking one of them as an example, the connecting arms 232 all include a strip member 2321 and a reinforcement member 2322, wherein there are two strip members 2321, and the two strip members 2321 are gap-set, and the strip member 2321 is fixedly connected to or integrally set with the cylindrical body 231; there are multiple reinforcement members 2322, exemplarily, there are two reinforcement members 2322, and both ends of the reinforcement member 2322 are respectively fixedly connected to or integrally set with the two strip members 2321.

[0076] Preferably, the drum washing machine of the present invention also includes an air leakage prevention device. When the washing drum 2 is in a rotating state, the air leakage prevention device can keep the water port 212 and the corresponding first water pipe 61 in a connected state. When the washing drum 2 is in a stationary state, the air leakage prevention device can keep the water port 212 that is not immersed in water and the corresponding first water pipe 61 in an interrupted state.

[0077] When the washing machine is in a rotating state, for example, when the washing machine is executing a dehydration program, the anti-leakage device can keep the water port 212 connected with the corresponding first water pipe 61, that is, the three water ports 212 and the corresponding first water pipes 61 are all connected. In this way, water can be discharged through the three first water pipes 61 at the same time, thereby improving the drainage capacity of the washing machine.

[0078] When the washing machine is in a stationary state, for example, between executing the washing program and the rinsing program, the water in the washing drum 2 needs to be drained. At this time, all the water in the washing drum 2 is located in the lower part of the washing drum 2, and only the water opening 212 located at the bottom of the three water openings 212 is immersed in water, and the other two water openings 212 are located at the upper part and are not immersed in water. In this case, the anti-leakage device can keep the two water openings 212 located at the upper part (i.e., the water openings 212 not immersed in water) and the corresponding first water pipes 61 in an interrupted state. In this way, after starting the drain pump 67, the two first water pipes 61 can be prevented from leaking, thereby ensuring the smooth execution of the drainage program.

[0079] Among them, the anti-leakage device can be three solenoid valves, which are respectively arranged at the corresponding water outlet 212. When the washing machine is in a rotating state, the three solenoid valves are all in an on state to keep the water outlet 212 and the corresponding first water pipe 61 connected. When the washing machine is in a stationary state, the solenoid valve at the water outlet 212 that is not immersed in water can be closed to keep the water outlet 212 and the corresponding first water pipe 61 in an interrupted state.

[0080] Of course, the anti-leakage device can also be set to other structural forms. Figure 5 A preferred embodiment of the air leakage prevention device will be described in detail.

[0081] like Figure 5 As shown, the anti-leakage device includes a plurality of anti-leakage units. Exemplarily, the anti-leakage device includes three anti-leakage units. The structures of the three anti-leakage units may be the same or different. Of course, it is preferred to set the three anti-leakage units to the same structure.

[0082] The air leakage prevention unit includes two air leakage prevention components that cooperate with each other, which are denoted as a first air leakage prevention component and a second air leakage prevention component. A chamber is formed in the first air leakage prevention component, and the second air leakage prevention component is located in the chamber. The top of the chamber is connected to the first water pipe 61, and the middle position near the chamber is connected to the water outlet 212. This section of the chamber is denoted as a connecting chamber 71, which is used to connect the first water pipe 61 and the water outlet 212. The chamber at one end below the connecting chamber 71 is denoted as a accommodating chamber 72. The second air leakage prevention component is generally located in the accommodating chamber 72. The second air leakage prevention component is a spherical structure 73. The outer diameter of the spherical structure 73 is larger than the inner diameter of the first water pipe 61, and smaller than the inner diameter of the connecting chamber 71.

[0083] When the washing tub 2 rotates, under the action of the centripetal force, the spherical structure 73 is always located in the accommodating chamber 72 . In this case, the water outlet 212 is connected with the corresponding communicating chamber 71 and the first water pipe 61 .

[0084] When the washing drum 2 stops rotating, two anti-leakage units are located at the top and one anti-leakage unit is located at the bottom. The spherical structure 73 of the anti-leakage unit at the bottom is located in the accommodating chamber 72 under the action of its own gravity, and the water port 212 at the bottom (the water port 212 is immersed in water) and the corresponding connecting chamber 71 and the first water pipe 61 remain connected to drain water. The spherical structure 73 of the anti-leakage unit at the top moves toward the first water pipe 61 under the action of its own gravity. Since the outer diameter of the spherical structure 73 is larger than the inner diameter of the first water pipe 61, the first water pipe 61 can be sealed, especially when the drainage pump 67 is started, under the suction of the drainage pump 67, the spherical structure 73 can more tightly seal the first water pipe 61 to prevent the first water pipe 61 from leaking. Of course, the outer diameter of the spherical structure 73 may be larger than the inner diameter of the connecting chamber 71 . In this way, the spherical structure 73 may directly seal the connecting chamber 71 , that is, indirectly seal the first water pipe 61 , and also prevent the first water pipe 61 from leaking.

[0085] In another preferred embodiment, the second anti-leakage component is still a spherical structure 73, but the connecting chamber 71 is arranged as a frustum-shaped chamber, that is, the inner diameter of the connecting chamber 71 gradually increases from one end to the other end, the end with a smaller inner diameter is recorded as the first end, and the end with a larger inner diameter is recorded as the second end. The first end is connected to the first water pipe 61, and the diameter of the spherical structure 73 is larger than the inner diameter of the first end but smaller than the inner diameter of the second end. When the spherical structure 73 moves toward the first water pipe 61, due to the gradual decrease in the inner diameter of the connecting chamber 71, the spherical structure 73 stays in the middle position of the connecting chamber 71, indirectly sealing the first water pipe 61.

[0086] Preferably, the drum washing machine of the present invention further comprises a linkage device, which is arranged between the machine door 11 and the drum door 25, and the linkage device is arranged to enable the drum door 25 to be opened or closed together with the machine door 11, and to allow the drum door 25 to rotate relative to the machine door 11 when the washing drum 2 rotates. By arranging the linkage device between the machine door 11 and the drum door 25, when the machine door 11 is opened, the drum door 25 can be opened together with the machine door 11, and similarly, when the machine door 11 is closed, the drum door 25 can also be closed together with the machine door 11, so that the user does not need to perform two operations, thereby improving the user's use experience. In addition, during the operation of the washing machine, the drum door 25 is to rotate synchronously with the washing drum 2, and the linkage device arranged between the machine door 11 and the drum door 25 allows the drum door 25 to rotate relative to the machine door 11, and will not hinder the drum door 25 from rotating synchronously with the washing drum 2.

[0087] Combine the following Figures 10 to 12 A preferred embodiment of the linkage device is described in detail. Figures 10 to 12As shown, the linkage device of the present invention includes an arc connecting rod 81, a guide rod 82, a roller 83, an electromagnetic component 84 and a first iron component 85. Among them, the guide rod 82 is arranged on the machine door 11, and the first end of the arc connecting rod 81 is slidably connected with the guide rod 82. For example, a through hole is formed at the first end of the arc connecting rod 81, and the guide rod 82 passes through the through hole. The arc connecting rod 81 can slide left and right along the length direction of the guide rod 82, and can rotate with the guide rod 82 as an axis. The roller 83 is rotatably connected with the second end of the arc connecting rod 81, and an annular groove 251 is formed on the drum door 25. The roller 83 is located in the annular groove 251. In this way, the drum door 25 and the machine door 11 are connected together through the arc connecting rod 81, so that the drum door 25 can move together with the machine door 11, and when the drum door 25 rotates with the washing drum 2, the roller 83 also rotates, and will not hinder the rotation of the drum door 25.

[0088] Continue reading Fig.11 and Fig.12 The electromagnetic component 84 is also arranged on the machine door 11, and the first iron component 85 is arranged on the arc connecting rod 81. The electromagnetic component 84 cooperates with the first iron component 85 to enable the arc connecting rod 81 to rotate around the guide rod 82 as the axis, so as to separate or engage the roller 83 with the annular slide groove 251. Exemplarily, the electromagnetic component 84 is located above the arc-shaped connecting rod 81. The electromagnetic component 84 can be a common electromagnetic suction cup, which is energized and demagnetized. During the operation of the washing machine, the electromagnetic component 84 can be energized, and the first iron component 85 drives the arc-shaped connecting rod 81 to rotate under the attraction of the electromagnetic component 84, and the second end of the arc-shaped connecting rod 81 is lifted, so that the roller 83 is separated from the annular slide groove 251. In this way, it will not hinder the rotation of the drum door 25, and the noise generated by the rotation of the roller 83 can also be avoided; after the operation of the washing machine is finished, the electromagnetic component 84 is powered off, the magnetism disappears, and under the gravity of the first iron component 85, the arc-shaped connecting rod 81 and the roller 83, the arc-shaped connecting rod 81 rotates in the opposite direction, and the roller 83 re-engages with the annular slide groove 251, so that the drum door 25 can move together with the machine door 11. It is preferred that the first iron component 85 is arranged close to the second end of the arc-shaped connecting rod 81.

[0089] It should be noted that the electromagnetic component 84 can also be a special electromagnetic suction cup, which is magnetic under normal conditions and demagnetized when powered on. A permanent magnet is arranged inside the special electromagnetic suction cup, and suction is generated by the permanent magnet under normal conditions. The magnetic force generated when powered on is opposite in polarity to the inherent magnetic force of the permanent magnet, so that the suction forces cancel each other out, causing the electromagnetic suction cup to lose suction. In addition, it should be noted that the installation positions of the electromagnetic component 84 and the first iron component 85 can also be interchanged, and the electromagnetic component 84 can be installed on the arc connecting rod 81, and the first iron component 85 can be installed on the machine door 11.

[0090] Preferably, if Fig.13 As shown, a magnetic push-pop switch 9 is provided on the drum door 25, and the magnetic push-pop switch 9 is configured to be able to be adsorbed onto the washing drum 2 to keep the drum door 25 in a closed state, and to be able to drive the drum door 25 to pop open together when the adsorption is released. During the operation of the washing machine, the drum door 25 is closed, and the magnetic push-pop switch 9 is adsorbed onto the washing drum 2 to prevent the drum door 25 from accidentally opening as the washing drum 2 rotates. After the operation of the washing machine is finished, the magnetic attraction push-pop switch 9 loses its magnetism, is released from adsorption, and drives the drum door 25 to pop open together. Among them, a piece of iron sheet can be provided at a position corresponding to the magnetic push-pop switch 9 on the washing drum 2, so that the magnetic push-pop switch 9 can be adsorbed onto the washing drum 2.

[0091] It should be noted that a magnetic push-open switch 9 may also be provided on the door 11, and the magnetic push-open switch 9 is configured to be able to be adsorbed onto the cabinet 1 to keep the door 11 in a closed state, and to be able to drive the door 11 to pop open together when the adsorption is released. In practical applications, those skilled in the art may only provide the magnetic push-open switch 9 on the door 11 or the cylinder door 25, or may provide one magnetic push-open switch 9 on each of the door 11 or the cylinder door 25. Such flexible adjustment and change does not deviate from the principle and scope of the present invention, and should be limited within the protection scope of the present invention.

[0092] Combine the following Fig.14 A preferred embodiment of the magnetic push-open switch 9 is described in detail. Fig.14 As shown, the magnetic push switch 9 includes a base 91 , a first electromagnetic suction cup 92 , a second electromagnetic suction cup 93 , a second iron component 94 , an elastic component 95 and a movable component 96 .

[0093] Among them, the second electromagnetic suction cup 93 is arranged opposite to the second iron component 94, the second electromagnetic suction cup 93 is connected to the base 91, the second iron component 94 is connected to the left end of the movable component 96, the right end of the movable component 96 is connected to the first electromagnetic suction cup 92, the movable component 96 can move left and right relative to the base 91, the left end of the elastic component 95 is connected to the base 91, the right end of the elastic component 95 is connected to the movable component 96, the first electromagnetic suction cup 92 can be adsorbed onto the washing drum 2 to keep the drum door 25 in a closed state, and at this time the first electromagnetic suction cup 92 and the second iron component 94 are in an attracted state to keep the elastic component 95 in a compressed state.

[0094] In the process of closing the drum door 25, the first electromagnetic sucker 92 first contacts the washing drum 2, the movable member 96 moves to the left, the elastic member 95 is compressed, and the second iron member 94 is attracted to the second electromagnetic sucker 93. After the drum door 25 is closed, the first electromagnetic sucker 92 and the second electromagnetic sucker 93 both maintain suction, the first electromagnetic sucker 92 is adsorbed onto the washing drum 2 to keep the drum door 25 closed, and the second iron member 94 is adsorbed onto the second electromagnetic sucker 93 to keep the elastic member 95 compressed. After the washing machine is finished running, the magnetism of the first electromagnetic sucker 92 and the second electromagnetic sucker 93 disappears, and the drum door 25 is bounced open under the elastic force of the elastic member 95.

[0095] It should be noted that the first electromagnetic suction cup 92 and the second electromagnetic suction cup 93 can both adopt ordinary electromagnetic suction cups, which are magnetic when powered on and demagnetized when powered off, or special electromagnetic suction cups, which are magnetic under normal conditions and demagnetized when powered on. Such special electromagnetic suction cups are provided with permanent magnets, which generate suction force under normal conditions. The magnetic force generated when powered on is opposite to the inherent magnetic force of the permanent magnet, so that the suction forces cancel each other out, causing the electromagnetic suction cup to lose its suction force.

[0096] It should be noted that the installation positions of the second electromagnetic chuck 93 and the second iron member 94 can be interchanged, the second electromagnetic chuck 93 is installed to the left end of the movable member 96, and the second iron member 94 is installed to the base 91. In addition, the second iron member 94 can also be replaced by an electromagnetic chuck.

[0097] Continue reading Fig.14 A first chamber 911 and a second chamber 912 are formed in the base 91, a partition 913 is arranged between the first chamber 911 and the second chamber 912, the second electromagnetic suction cup 93 and the second iron member 94 are located in the first chamber 911, and the elastic member 95 is located in the second chamber 912. The elastic member 95 is a spring, and a limiting member 97 is arranged on the movable member 96, the left end of the spring is connected to the partition 913, and the right end of the spring is connected to the limiting member 97. Exemplarily, the movable member 96 is a movable rod, and the spring is sleeved on the movable rod. Of course, multiple springs can also be arranged, evenly distributed along the circumference of the movable rod.

[0098] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle 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 these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A drum washing machine, comprising a housing, a door being provided on one side of the housing, characterized in that: The drum washing machine also includes: A fixing device, which is arranged in the box; A washing drum, which is rotatably arranged in the fixing device, the washing drum is used to contain items to be washed and washing water, and a clothes introduction opening and a drum door are arranged at a first end of the washing drum, and the drum door is used to open or close the clothes introduction opening; a water supply and discharge device, which is connected to the second end of the washing tub so as to supply water into the washing tub or discharge water in the washing tub; and a linkage device, which is arranged between the machine door and the drum door, and the linkage device is arranged to enable the drum door to be opened or closed together with the machine door, and to allow the drum door to rotate relative to the machine door when the washing drum rotates; The linkage device includes an arc-shaped connecting rod, a guide rod and a roller. An annular slide groove is formed on the cylinder door. The guide rod is arranged on the machine door. The first end of the arc-shaped connecting rod is slidingly connected to the guide rod. The roller is rotationally connected to the second end of the arc-shaped connecting rod. The roller is located in the annular slide groove.

2. The drum washing machine according to claim 1, characterized in that: The linkage device also includes an electromagnetic component and a first iron component, one of the electromagnetic component and the first iron component is arranged on the arc-shaped connecting rod, and the other of the electromagnetic component and the first iron component is arranged on the machine door. The electromagnetic component cooperates with the first iron component to enable the arc-shaped connecting rod to rotate around the guide rod as the axis so as to separate or engage the roller with the annular slide groove.

3. The drum washing machine according to claim 2, characterized in that: The first iron component is arranged on the arc-shaped connecting rod and close to the second end of the arc-shaped connecting rod, and the electromagnetic component is arranged on the machine door.

4. The drum washing machine according to claim 1, characterized in that: The machine door and / or the drum door are provided with a magnetic push-pop switch, which is configured to be able to be adsorbed to the box body and / or the washing drum to keep the machine door and / or the drum door in a closed state, and to drive the machine door and / or the drum door to pop open together when the adsorption is released.

5. The drum washing machine according to claim 4, characterized in that: The magnetic push-pop switch includes a base, a first electromagnetic suction cup, a second electromagnetic suction cup, a second iron component, an elastic component and a movable component. The second electromagnetic suction cup is arranged opposite to the second iron component, and one of the second electromagnetic suction cup and the second iron component is connected to the base, the other of the second electromagnetic suction cup and the second iron component is connected to one end of the movable component, the other end of the movable component is connected to the first electromagnetic suction cup, the movable component can move relative to the base, one end of the elastic component is connected to the base, the other end of the elastic component is connected to the movable component, the first electromagnetic suction cup can be adsorbed onto the washing drum to keep the drum door in a closed state, and at this time, the first electromagnetic suction cup and the second iron component are in an attracted state to keep the elastic component in a compressed state.

6. The drum washing machine according to claim 1, characterized in that: The water inlet and outlet device includes a first water inlet and outlet assembly, an adapter, and a second water inlet and outlet assembly which are connected in sequence, the first water inlet and outlet assembly is connected to the second end of the washing drum, the second water inlet and outlet assembly is connected to the outside, the adapter is installed on the fixing device, and the first water inlet and outlet assembly and the part of the adapter connected to the first water inlet and outlet assembly can rotate with the washing drum.

7. The drum washing machine according to claim 6, characterized in that: A plurality of water-passing structures are arranged along the circumference of the washing drum, the first water inlet and outlet assembly includes a first water pipe and a water collecting member, the number of the first water pipes is multiple, a plurality of water diversion ports are arranged at one end of the water collecting member, a central port is arranged at the other end of the water collecting member, the plurality of water diversion ports are all connected with the central port, the first end of the first water pipe is connected with the corresponding water-passing structure, the second end of the first water pipe is connected with the corresponding water diversion port, and the central port is connected with the adapter.

8. The drum washing machine according to claim 7, characterized in that: The water-through structure is a water-through opening formed at the junction of the rear wall of the washing drum and the inner drum wall.

9. The drum washing machine according to claim 6, characterized in that: The adapter is a rotating tee, which includes a rotating port and two fixed ports. The second inlet and outlet assembly includes an inlet pipe and a outlet pipe. The rotating port is connected to the first inlet and outlet assembly, one of the two fixed ports is connected to the inlet pipe, and the other of the two fixed ports is connected to the outlet pipe.

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