CN111041782A

CN111041782A - Drum washing machine

Info

Publication number: CN111041782A
Application number: CN201811191462.0A
Authority: CN
Inventors: 刘海涛; 李以民; 劳春峰
Original assignee: Qingdao Haier Washing Machine Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2018-10-12
Filing date: 2018-10-12
Publication date: 2020-04-21
Anticipated expiration: 2038-10-12
Also published as: CN111041782B

Abstract

The invention discloses a drum washing machine, which comprises a drum which is arranged in a shell and does not have a dewatering hole, wherein a clothes input opening is arranged on the side wall of the drum, and a door body which can turn over to open and close the clothes input opening is arranged on the drum; a water inlet is arranged on the roller, and a valve core with a corresponding closed opening is arranged at the water inlet; the shell is also internally provided with a water inlet structure so as to open the valve core and open the water inlet after the roller rotates to a fixed position, and the water inlet pipe of the washing machine is communicated with the inside of the roller through the water inlet. By arranging the structure on the roller, the roller is driven to rotate to a fixed position and then is acted by the exhaust structure to correspondingly push away the valve core arranged at the water inlet, so that the water inlet of the imperforate roller is correspondingly opened, and the water inlet of the washing machine flows through the opened water inlet and flows into the imperforate roller along the hollow flow passage in the ejector rod, thereby achieving the use function of water inlet of the top-opening type imperforate roller washing machine.

Description

Drum washing machine

Technical Field

The invention relates to washing machine equipment in household appliances, in particular to a top-opening type drum washing machine, in particular to a drum washing machine, wherein a drum is composed of an inner drum without dewatering holes and provided with a clothes throwing opening at the top.

Background

Washing machines are largely classified into pulsator type, pulsator type and drum type washing machines. Generally, a washing machine removes stains from laundry by the action of water and detergent.

The pulsator type washing machine performs a washing operation by rotating a pulsator at the center of a washing tub left and right. The agitator type washing machine performs a washing operation using a frictional force between water current and laundry by rotating a rotary blade at the center of a washing tub in the left-right direction. The drum type washing machine performs a washing operation by beating laundry by rotating a drum.

A drum type washing machine generally includes a housing, an outer tub for containing washing water, a drum for containing laundry, and a motor and a shaft for rotating the drum.

In addition, there are a control part for controlling the washing process, generally a control panel, and a water inlet and discharge mechanism, etc. The drum type washing machine removes stains contained in laundry using frictional force between wash water stored in a sump and the laundry in a drum and chemical action of detergent contained in the wash water.

The washing drum is used as an important part of the washing machine, is not only used for accommodating washings to form a washing container, but also can participate in washing work, particularly the drum washing machine mainly depends on the rotation action of the washing drum to lift and throw off the clothes to form a beating effect, and meanwhile, the washing drum also has a certain rubbing action on the clothes, so that the washing effect is realized by beating and washing; besides pulsator washing, many of the existing pulsator washing machines also adopt a washing drum to wash, for example, so-called "dual-power" washing machines which are popular in the market.

Compared with the pulsator washing machine, the drum washing machine has the weak point that the door is arranged at the front side, so that after water enters, the door is inconvenient to open, clothes are added again, and clothes are contained or taken out, and people need to bend down or squat down to take the clothes, which is very inconvenient for old people or pregnant women. Therefore, the top-opening type drum washing machine has the advantages that the drum washing machine is clean in washing and small in abrasion, and the rotary drum washing machine is provided with an upper opening for taking and placing clothes and can add the clothes midway.

However, because a large amount of dirt is commonly left between the inner drum and the outer drum of the drum washing machine at present, in order to avoid the pollution to the washing water, the applicant has previously proposed a nonporous drum washing machine which combines the inner drum and the outer drum into one, so as to overcome the problem of dirt left between the inner drum and the outer drum. Therefore, how to apply the holeless drum technology to the top-loading washing machine becomes a hot point for research and development.

In addition, how to realize water inlet in the imperforate roller becomes a problem to be solved.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a drum washing machine, so as to realize the purpose of arranging a top-opening door body on the drum washing machine, achieve the double effects that the drum simultaneously has the functions of containing washing water and washing clothes by utilizing self rotation, further achieve the purposes of preventing dirt from being left in a drum of the washing machine and preventing the drum of the washing machine from being cleaned; still another object of the present invention is to provide a water inlet structure of a drum washing machine without holes, so as to achieve the purpose of controllable water inlet in the drum without holes.

In order to solve the technical problems, the invention adopts the technical scheme that the basic concept is as follows:

a drum washing machine comprises a drum which is arranged in a shell and is not provided with a dewatering hole, a clothes input opening is arranged on the side wall of the drum, and a door body which can turn over to open and close the clothes input opening is arranged on the drum; a water inlet is arranged on the roller, and a valve core with a corresponding closed opening is arranged at the water inlet; the shell is also internally provided with a water inlet structure so as to open the valve core and open the water inlet after the roller rotates to a fixed position, and the water inlet pipe of the washing machine is communicated with the inside of the roller through the water inlet.

Furthermore, the valve core is correspondingly covered and arranged on the inner side of the roller, the valve core is connected with the roller through a spring, and the spring applies elastic pressure to the valve core along the radial direction of the roller from inside to outside so that the valve core blocks the water inlet; preferably, a support cover arranged opposite to the water inlet is arranged on the inner side of the roller, the periphery of the support cover is fixedly connected with the roller, the valve core is arranged between the support cover and the water inlet, a certain movable gap is formed between the valve core and the support cover, a spring which extends along the radial direction of the roller and is in a compressed state is arranged in the movable gap, and two ends of the spring are respectively abutted against the support cover and the valve core; preferably, the end part of the spring is abutted against the center of the valve core; further preferably, at least a part of the periphery of the support cover and the roller are hollowed out, so that the movable gap is communicated with the inside of the roller through the hollowed-out part.

Furthermore, the water inlet structure comprises a mandril which can stretch and move along the radial direction of the roller, and the mandril and the water inlet are arranged in the same rotating section of the roller, so that the stretching end of the mandril can correspondingly stretch into the water inlet and push the valve core open; preferably, when the roller rotates to a fixed position, the ejector rod and the water inlet are positioned on the same extension straight line, and the ejector rod is driven to move along the roller in the radial direction from outside to inside so as to correspondingly jack the valve core at the water inlet.

Further, the ejector rod is composed of a hollow sleeve, the hollow part of the sleeve forms a flow channel, and a flow channel opening at the telescopic end of the ejector rod corresponds to the water inlet so that the flow channel is communicated with the inside of the roller after the telescopic end of the ejector rod correspondingly extends into the water inlet; the runner port at the other end of the ejector rod is communicated with a water inlet pipe of the washing machine, so that the inlet water of the washing machine flows into the roller from the water inlet through the inner runner of the ejector rod.

Further, the ejector rod is connected with a rotating shaft of the driving motor through a crank connecting rod mechanism, so that the ejector rod is driven by the crank connecting rod mechanism to generate telescopic displacement along the radial direction of the roller in the rotating process of the rotating shaft of the driving motor; preferably, the crank-link mechanism comprises an eccentric wheel, the center of the eccentric wheel is coaxially fixed with the rotating shaft, the periphery of the eccentric wheel is hinged with one end of a connecting rod, and the other end of the connecting rod is hinged with the ejector rod.

Furthermore, the water inlet structure also comprises a sleeve-shaped shell, the ejector rod coaxially penetrates through the sleeve-shaped shell, one end of the sleeve-shaped shell is hermetically arranged and is provided with an opening for the telescopic end of the ejector rod to penetrate out, so that the ejector rod can only generate telescopic movement along the radial direction of the roller under the limiting action of the sleeve-shaped shell; the other end of the sleeve-shaped shell is fixedly arranged on the shell; preferably, a spring sleeved on the periphery of the ejector rod is further arranged in the sleeve-shaped shell, one end of the spring is connected with the sealing end of the sleeve-shaped shell, and the other end of the spring is connected with the ejector rod; the spring is always in a compressed state, and the ejector rod has a tendency of popping towards the inner direction of the roller due to the elasticity of the spring.

Further, an outer cylinder is sleeved on the periphery of the roller in a collision mode, and a water inlet structure is installed on the outer cylinder; preferably, an end portion of the sleeve-shaped housing is fixedly attached to an inner peripheral side of the outer cylinder.

Furthermore, a positioning device is arranged on the shell to limit the roller to rotate to a fixed position; the positioning device comprises a positioning groove which is arranged on the periphery of the roller and is sunken towards the inside of the roller and a positioning rod which can stretch and move along the radial direction of the roller, and the positioning rod and the positioning groove are arranged in the rotating section of the same roller so that the stretching end of the positioning rod can correspondingly stretch into the positioning groove; preferably, when the positioning rod is inserted into the positioning groove, the roller rotates to a fixed position, and the water inlet is positioned at the upper part of the roller and is at least higher than the maximum water inlet level of the roller.

Furthermore, the positioning rod and the water inlet are positioned in different rotating sections of the roller, so that the water inlet structure and the positioning device are arranged in a staggered manner; preferably, the positioning rod is connected with a rotating shaft of the driving motor through a crank connecting rod mechanism so as to drive the positioning rod to generate telescopic displacement along the radial direction of the roller through the crank connecting rod mechanism in the rotating process of the rotating shaft of the driving motor; preferably, the crank-link mechanism comprises an eccentric wheel, the center of the eccentric wheel is coaxially fixed with the rotating shaft, the periphery of the eccentric wheel is hinged with one end of a connecting rod, and the other end of the connecting rod is hinged with the positioning rod.

Furthermore, a radially protruding lifting rib is arranged on the inner side of the roller, the lifting rib is hollow, and a through hole is formed in the lifting rib to communicate the inner hollow cavity with the roller; the water inlet is arranged on the wall of the roller corresponding to the lifting rib, so that the water inlet is communicated with the inside of the roller through the hollow part inside the lifting rib.

After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:

through the arrangement, the purposes that the clothes input opening is formed in the side wall of the rotary drum of the washing machine, and the clothes input opening formed in the rotary drum is correspondingly sealed and closed by the door body or is opened to take and place clothes are achieved; meanwhile, the clothes feeding opening is arranged on the side wall of the drum, so that a user can open the door body from the upper part of the washing machine and can take and place clothes into and out of the drum; more particularly, the clothes feeding opening of the roller is sealed by the door body, so that the roller can be arranged as a sealed container, and the two ends of the roller can be supported by the rotating shaft in the washing process of the roller, thereby avoiding the eccentric rotation of the roller.

The single door body which is turned outwards and opened is arranged at the clothes feeding opening on the side wall of the drum, so that the opening and closing mode of the top-opening drum washing machine is simpler, and the convenience degree of user operation is improved; meanwhile, one side of a single door body at the clothes feeding opening is hinged with the roller, and the other side of the single door body is connected with the roller in a locking mode through a locking structure, so that the purposes of quick opening, closing and locking of the door body are achieved.

The rotary drum of the washing machine is a sealed container without dewatering holes, so that the rotary drum has double effects of a water containing outer drum and a stirring inner drum, the phenomenon that dirt is reserved on the outer wall of the inner drum and the inner wall of the outer drum due to the fact that washing water flows between the inner drum and the outer drum is avoided, the cleanliness in the rotary drum of the washing machine is improved, and the purpose that the washing machine is free of cleaning is achieved.

By arranging the structure on the roller, the roller is driven to rotate to a fixed position and then is acted by the exhaust structure to correspondingly push away the valve core arranged at the water inlet, so that the water inlet of the imperforate roller is correspondingly opened, and the water inlet of the washing machine flows through the opened water inlet and flows into the imperforate roller along the hollow flow passage in the ejector rod, thereby achieving the use function of water inlet of the top-opening type imperforate roller washing machine.

Through the arrangement, when the nonporous drum of the top-opening drum washing machine stops rotating, the nonporous drum stops to a fixed position under the action of the positioning structure, so that the nonporous drum can be positioned and kept still at the fixed position.

Meanwhile, the invention has simple structure and obvious effect and is suitable for popularization and use.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention to its proper form. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 and 2 are schematic structural views of a washing machine according to an embodiment of the present invention from different perspectives;

FIGS. 3 and 5 are sectional views of different radial sections of the washing machine according to the embodiment of the present invention;

FIG. 4 is an enlarged schematic view of the structure of the embodiment of the present invention at A in FIG. 3;

FIG. 6 is an enlarged schematic view of the structure of the embodiment of the present invention at B in FIG. 5;

FIG. 7 is a schematic sectional view of a drain port according to an embodiment of the present invention;

FIG. 8 is a schematic axial sectional view of a washing machine according to an embodiment of the present invention;

FIG. 9 is an enlarged schematic view of the embodiment of the present invention at C in FIG. 8;

FIG. 10 is a schematic structural view of a water inlet end cap in an embodiment of the invention;

FIG. 11 is a sectional view schematically showing a structure of a washing machine according to an embodiment of the present invention;

FIG. 12 is a schematic sectional view of a drum of a washing machine according to an embodiment of the present invention;

FIGS. 13 and 17 are schematic views showing the installation of the air-permeable structure according to various embodiments of the present invention;

FIG. 14 is a schematic view of a mounting bracket structure of the air permeable structure in an embodiment of the present invention;

FIG. 15, FIG. 18 and FIG. 19 are schematic sectional views of different valve plate assemblies according to the embodiment of the present invention;

FIGS. 16 and 20 are schematic structural views of different valve plates in the embodiment of the invention;

FIGS. 21 and 22 are schematic structural views of the door body in different states according to the embodiment of the invention;

FIG. 23 is a cross-sectional schematic view of a door assembly according to an embodiment of the present invention;

FIG. 24 is a schematic view showing the construction of a washing machine according to another embodiment of the present invention;

FIG. 25 is a schematic sectional view of a washing machine according to another embodiment of the present invention;

FIG. 26 is an enlarged schematic view of FIG. 25 at D in accordance with an embodiment of the present invention;

fig. 27 is a schematic sectional view of a water inlet structure in the ninth embodiment of the present invention.

In the figure: 100. a housing; 200. a drum; 300. a door cover; 400. a drainage structure; 500. a positioning structure; 600. a vent valve; 800. an outer cylinder; 900. a water inlet structure; 1. a side wall; 2. a sealing part; 3. a laundry input port; 11. a rotating shaft; 210 lifting ribs; 82. hanging a spring; 83. and a support member.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 23, an embodiment of the present invention provides a washing machine including a drum 200 installed in a washing machine housing 100; the drum 200 comprises a side wall 1 enclosing a cylindrical structure, two ends of the cylindrical side wall 1 are sealed by sealing parts 2, a clothes input opening 3 is arranged on the side wall 1 of the drum 200, and a door 300 capable of being opened and closed is arranged at the clothes input opening 3, so that a user can take and place clothes from the clothes input opening 3 on the side wall 1 of the drum inwards.

In the embodiment of the present invention, an outer tub 800 is further disposed in the washing machine housing 100, and upper and lower ends of the outer tub 800 are respectively connected to an upper portion and a lower portion of the washing machine housing 100 through a hanging spring 82 and a supporting member 83, so that the outer tub 800 can be installed in the housing 100 to generate vibration displacement. The drum 200 is coaxially sleeved inside the outer drum 800, and both ends of the outer drum 800 are hermetically arranged to form a sealed container for the outer drum 800 to contain the water inlet of the washing machine.

In the embodiment of the present invention, the drum 200 may be a sealed container without dewatering holes and having only the laundry loading port 3 on the sidewall 1 of the inner drum, so that the drum has dual purposes of rotating to tumble and wash laundry and hermetically containing water for washing, and the effect of integrating the inner drum and the outer drum of the drum washing machine into one and integrating the drum into a single drum is achieved.

In the embodiment of the present invention, the top of the sidewall of the outer tub 800 is provided with an opening, and the opening is arranged opposite to the laundry input opening 3 arranged on the sidewall 1 of the drum, so that after the drum 200 stops rotating, a user can control the opening and closing of the door 300 at the laundry input opening 3 from the opening arranged on the top of the sidewall 1 of the outer tub, thereby realizing the input and taking of laundry.

In the embodiment of the present invention, the top of the washing machine casing 100 is further provided with a feeding opening, and the feeding opening is arranged opposite to the opening arranged on the outer drum 800 and the clothes feeding opening 3 arranged on the drum side wall 1. An openable and closable door is provided in the washing machine casing 100 to cover the input port. Meanwhile, in order to prevent water from splashing between the outer tub 200 and the housing 100, a door may be provided on the outer tub 800 to cover the opening of the outer tub 800; as shown in fig. 3, a sleeve may be connected between the opening of the outer cylinder 800 and the input port of the housing 100; the door body arranged at the feeding opening of the casing 100 can be provided with a downward convex part, and the convex part corresponds to the opening of the sealing outer cylinder 800 after the door body is closed. The opening of the tub 800 can be sealed in the above manner, so as to prevent water from overflowing between the tub 800 and the casing 100 during normal washing of the washing machine.

Example one

As shown in fig. 1 to 7, the present embodiment describes a drainage structure of a top-loading drum washing machine, the washing machine includes a drum 800 installed in a housing 100 and having no dewatering holes, a laundry input opening 3 is formed on a sidewall of the drum 200, and a door 300 for turning over to open and close the laundry input opening is formed on the drum 200; a water outlet 45 is arranged on the roller 200, and a valve core 413 which is correspondingly opened in a closed way is arranged at the water outlet 45; a drain structure 400 is further installed in the housing 100 to open the valve core 413 and the drain port 45 after the drum 200 is rotated to a fixed position.

By arranging the structure on the roller, the roller is driven to rotate to a fixed position and then is acted by the drainage structure to correspondingly push away the valve core arranged at the drainage outlet, so that the drainage outlet of the imperforate roller is correspondingly opened, and the use function of smooth drainage of the top-opening imperforate roller washing machine is further realized.

In this embodiment, the valve core 413 is correspondingly covered and disposed inside the drum 200, the valve core 413 is connected to the drum 200 through the spring 414, and the spring 414 applies an elastic pressure to the valve core 413 from inside to outside along the radial direction of the drum 200, so that the valve core 413 blocks the water outlet 45.

The valve core at the water outlet is connected with the roller through the spring, so that the valve core is subjected to the acting force of the spring on the valve core to close the water outlet in real time, and the phenomenon that the centrifugal force, the water flow impact force and the like in the rotation process of the roller act on the valve core to enable the water outlet to be opened mistakenly is avoided.

In this embodiment, a bracket cover 411 is disposed on the inner side of the drum 200 opposite to the water outlet, the outer periphery of the bracket cover 411 is fixedly connected to the drum 200, a valve core 413 is disposed between the bracket cover 411 and the water outlet 45, a certain movable gap is formed between the valve core 413 and the bracket cover 411, a spring 414 extending along the radial direction of the drum 200 and in a compressed state is disposed in the movable gap, and two ends of the spring 414 respectively contact the bracket cover 411 and the valve core 413. Preferably, the end of the spring 414 contacts the center of the valve element 413 to prevent the valve element 413 from completely closing the drain opening 45 due to the displacement of the valve element 413 caused by the elastic force. Further preferably, at least a portion of the outer peripheral wall of the holder cover 411 is hollowed out, so that the movable gap communicates with the inside of the drum 200 through the hollowed-out portion.

In this embodiment, the bracket cover 411 is a bowl-shaped structure that is reversely buckled on the inner wall of the drum 200, an opening of the bowl-shaped bracket cover 411 is fixedly connected with the inner wall surface of the drum 200, so that a drainage chamber 415 is defined between the bracket cover 411 and the drum, and the drainage port 45 is communicated with the drainage chamber 415. A plurality of hollows 418 are arranged on the side wall of the bowl-shaped bracket cover 411, and the drainage chamber 415 is communicated with the inside of the drum 200 by each hollow 418. Preferably, the drain opening 45 is coaxially disposed with the bowl-shaped holder cover 411. The radial width of the inner wall of the drainage chamber 415 is gradually narrowed from bottom to top, a circle of sealing ring 412 made of elastic deformation materials such as rubber is sleeved on the outer periphery of the valve core 413, the outer periphery of the sealing ring 412 is in limited contact with the inner side wall of the support cover 411, and the radial width of the sealing ring 412 is smaller than the minimum radial width of the drainage chamber 415.

In this embodiment, the valve element 413 is horizontally disposed in a disk shape, and the outer circumference of the valve element 413 and the inner wall of the bowl-shaped bracket cover 411 are spaced by a certain gap. A cylindrical limiting rib 417 which is coaxially arranged and extends downwards from the bracket cover 411 is arranged at the center of the bowl-shaped bracket cover 411, a sleeve 416 which extends upwards is arranged at the center of the disc-shaped valve core 413, and the limiting rib 417 is correspondingly inserted into the sleeve 416; and the axial extension heights of the limiting rib 417 and the sleeve 416 are both smaller than the height of the bowl-shaped bracket cover 411, so that a moving gap for the valve core 413 to move up and down is reserved. The spring 414 is sleeved on the limiting rib 417 and the periphery of the sleeve 416, the upper end of the spring 414 is in limited abutting contact with the bracket cover 411, and the lower end of the spring 414 is in limited abutting contact with the disc-shaped valve core 413. The lower side of the valve core 413 is provided with a limiting groove for the corresponding insertion of the telescopic end of the mandril 44. Preferably, the downside of disk case 413 is equipped with coaxial setting, the convex stopper downwards, and the stopper comprises materials such as rubber that can produce elastic deformation, and the downside of stopper is equipped with the flexible end that supplies the ejector pin and corresponds male spacing groove. Further preferably, a circle of limiting groove protruding outward is formed on the outer periphery of the drain opening 45, and the outer diameter of the sealing ring 412 is equal to or slightly smaller than the inner diameter of the limiting groove, so that when the valve core 413 is urged by the spring to abut against the sidewall of the drum 200, the outer periphery of the sealing ring 412 abuts against the inner periphery of the limiting groove to seal the valve core 413 against the drain opening 45.

In this embodiment, the drainage structure includes a top rod 44 capable of moving along the radial direction of the roller 200 in a telescopic manner, and the top rod 44 and the drainage port 45 are disposed in the same rotating section of the roller 200, so that the telescopic end of the top rod 44 can correspondingly extend into the drainage port 45 to open the valve core 413. Preferably, when the roller rotates to a fixed position, the ejector rod and the water outlet are in the same extension straight line, and the ejector rod is driven to move along the radial direction of the roller from outside to inside so as to correspondingly jack the valve core 413 at the position of the water outlet 45. Further preferably, when the drum 200 rotates to the fixed position, the drain port 45 is located at the lowest position of the drum 200, so as to achieve the purpose that all the washing water contained in the drum 200 can be smoothly discharged.

In this embodiment, the top rod 44 is connected to the rotating shaft of the driving motor 41 through a crank-link mechanism, so that the top rod 44 is driven by the crank-link mechanism to generate a telescopic displacement along the radial direction of the drum 200 during the rotation of the rotating shaft of the driving motor 41. Preferably, the crank-link mechanism comprises an eccentric wheel 42, the center of the eccentric wheel 42 is coaxially fixed with the rotating shaft, the periphery of the eccentric wheel is hinged with one end of a connecting rod 43, and the other end of the connecting rod 43 is hinged with a mandril 44.

In this embodiment, the drainage structure further includes a sleeve-shaped housing 46, and the sleeve-shaped housing 46 is installed outside the outer cylinder 800 along the radial direction of the drum 200; the push rod 44 coaxially penetrates through the sleeve-shaped shell 46, one end of the sleeve-shaped shell 46 is hermetically arranged and is provided with an opening through which the telescopic end of the push rod 44 penetrates, and the end of the sleeve-shaped shell 46 is fixedly connected with the outer cylinder 800, so that the push rod can only move in a telescopic manner along the radial direction of the roller under the limiting effect of the sleeve-shaped shell. The other end of the sleeve-shaped shell 46 is provided with a mounting plate 47 with a sealed opening, the driving motor 41 is fixedly mounted on one side of the mounting plate 47 far away from the sleeve-shaped shell 46, and the rotating shaft of the driving motor 41 is arranged in parallel with the axis of the drum 200. Preferably, a spring 49 sleeved on the periphery of the ejector rod 45 is further arranged in the sleeve-shaped shell 46, one end of the spring 49 is connected with the sealed end of the sleeve-shaped shell 46 provided with the driving motor, and the other end of the spring 49 is connected with the ejector rod 45; the spring 49 is always in a compressed state, and the push rod 44 has a tendency of popping towards the inner direction of the roller under the elastic force of the spring so as to control the push rod to pop out in time after the eccentric wheel rotates.

In this embodiment, a disc-shaped eccentric wheel 42 is mounted on a rotating shaft of the driving motor 41, the disc-shaped eccentric wheel 42 is parallel to an axis of the push rod 44, a center of the disc-shaped eccentric wheel 42 is coaxially fixed with the rotating shaft of the driving motor 41, an eccentric shaft is disposed on an outer periphery of the disc-shaped eccentric wheel 42, and an axis of the eccentric shaft is perpendicular to the eccentric wheel 42. The extending direction of the connecting rod 43 is vertical to the axis of the eccentric shaft, and a first connecting hole is formed in the first end of the connecting rod 43 and hinged to the eccentric shaft; the second end of the connecting rod 43 is provided with a second connecting hole hinged with one end of the top rod 44 in the sleeve-shaped shell. Preferably, the first connection hole formed at the first end of the connecting rod 43 is a long hole extending along the axial direction of the connecting rod 43, and the extending length of the long hole is greater than the diameter of the eccentric shaft, so as to provide a movement margin for the connecting rod and improve the smoothness of the operation of the crank-link mechanism. Preferably, the mounting plate 47 is provided with a bearing seat 410 for the push rod 44 to pass through and be mounted, and the lower end of the push rod 44 correspondingly passes through the mounting plate 47 and is hinged with the second end of the connecting rod 43, so that the push rod is fixedly mounted on the outer cylinder under the action of the bearing seat, and the push rod can only generate telescopic movement along the axial direction of the roller under the action of the bearing seat.

In this embodiment, a dynamic seal structure 419 for the mandrel 44 to pass through is disposed on one side of the sleeve-shaped housing 46 facing the inside of the outer cylinder, and the dynamic seal structure 419 seals the sleeve-shaped housing 46 facing the outside of the outer cylinder and allows the mandrel to axially extend and retract, so as to isolate the inside of the housing from the outer cylinder and prevent water in the outer cylinder from flowing into the housing. Preferably, the dynamic seal structure 419 is an annular structure capable of generating radial expansion deformation, the inner circumference of the annular structure is connected with the outer wall of the push rod 44 in a sealing manner, and the outer circumference of the annular structure is connected with the housing in a sealing manner.

In this embodiment, a bellows 48 is disposed in the sleeve-shaped casing 46, and two ends of the bellows 48 are respectively fixed to the mounting plate 47 and the push rod 44 to divide the sleeve-shaped casing into an inner layer and an outer layer which are independent of each other; the push rod 44 is sleeved in the corrugated pipe 48, the spring 49 is sleeved on the outer periphery of the push rod 44 and the inner periphery of the corrugated pipe 48, two ends of the spring 49 are respectively connected with the mounting plate 47 and the push rod 44, and the upper end of the spring 49 and the joint of the push rod 44 and the corrugated pipe 48 are fixed.

In this embodiment, the outer cylinder 800 is provided with a through hole for the push rod 44 to pass through, the upper end of the sleeve-shaped shell 46 is correspondingly installed at the through hole of the outer cylinder 800, and the upper end of the sleeve-shaped shell 46 is hermetically connected with the periphery of the through hole to correspondingly seal the through hole. Through set up the bellows in the casing inside to divide into two parts of mutual independence with the casing is inside, avoid inside the washing water inflow bellows, influence the flexible removal of ejector pin.

Example two

The present embodiment is based on the first embodiment, and further has the following distinguishing technical features: as shown in fig. 1 to 4, in order to allow the drum to be accurately rotated to the fixed position, a positioning structure 500 is further provided on the drum washing machine to limit the rotation of the drum 200 to the fixed position, and particularly, to keep the drum 200 stopped after the rotation to the fixed position.

In this embodiment, the periphery of the roller 200 is provided with a positioning groove 55 recessed in the roller and a positioning rod 54 capable of radially extending and retracting along the roller 200, and the positioning rod 54 and the positioning groove 55 are arranged in the rotating section of the same roller 200, so that the extending end of the positioning rod 54 can correspondingly extend into the positioning groove 55. Preferably, when the positioning rod 54 is inserted into the positioning groove 55, the drum 200 is rotated to a fixed position, and the drain port 45 is located at the lowest position of the drum 200.

In this embodiment, the positioning groove 55 and the drainage port 45 are located in different rotation sections of the drum 200, such that the drainage structures 400 and the positioning structures 500 are arranged in a staggered manner. Preferably, the positioning rod 54 is connected to the rotating shaft of the driving motor 51 via a crank link mechanism, so that the positioning rod 54 is driven by the crank link mechanism to generate a telescopic displacement along the radial direction of the drum 200 during the rotation of the rotating shaft of the driving motor 51. Preferably, the crank-link mechanism includes an eccentric wheel 52, the center of the eccentric wheel 52 is coaxially fixed with the rotation shaft of the driving motor 51, the periphery is hinged with one end of a connecting rod 53, and the other end of the connecting rod 53 is hinged with a positioning rod 54.

In this embodiment, in the process of decelerating and braking the drum or in the process of rotating at a low speed, the positioning rod 54 extends out and then is in limited contact with the outer wall of the drum, and the positioning rod 54 extends into the positioning groove 55 until the drum rotates to a fixed position, so as to realize the positioning of the drum. Preferably, after the positioning rod extends into the positioning groove 55, a control signal is triggered to control the motor of the washing machine to stop working, so as to realize the locking of the drum and avoid the occurrence of the situation that the positioning rod 54 is broken due to the rigid collision between the positioning rod 54 and the drum 200.

In this embodiment, the positioning rod 54 is mounted outside the outer cylinder 800 through the sleeve-shaped casing 56, and the outer cylinder 800 is provided with a through hole for the positioning rod 54 to pass through, so that the telescopic end of the positioning rod 54 correspondingly extends into the positioning slot 55 disposed outside the drum 200, and the positioning rod can only generate axial telescopic displacement due to the limiting effect of the sleeve-shaped casing. In this embodiment, the positioning rod 54 and the positioning groove 55 are correspondingly disposed in the same rotation path section of the drum 200, so that the positioning rod 54 can be correspondingly inserted into the positioning groove 55.

In this embodiment, the positioning slot 55 and the drainage port 45 are staggered with respect to the center of the drum 200 by a certain angle, and the positioning rod 54 and the top rod 44 are staggered with respect to the center of the drum by the same angle, so that after the positioning rod 54 is inserted into the positioning slot 55 correspondingly, the top rod 44 can be inserted into the drainage port 45 at the same time to jack the valve core 413.

In this embodiment, the positioning structure 500 further includes a sleeve-shaped housing 56, and the sleeve-shaped housing 56 is installed outside the outer cylinder 800 along the radial direction of the drum 200; the positioning rod 54 coaxially penetrates through the sleeve-shaped shell 56, one end of the sleeve-shaped shell 56 is hermetically arranged and provided with an opening through which the telescopic end of the positioning rod 54 penetrates, and the end of the sleeve-shaped shell 56 is fixedly connected with the outer cylinder 800; the other end of the sleeve-shaped shell 56 is provided with a mounting plate 57 for sealing the opening, the driving motor 51 is fixedly mounted on one side of the mounting plate 57 far away from the sleeve-shaped shell 56, and the rotating shaft of the driving motor 51 is arranged in parallel with the axis of the drum 200. Preferably, a spring 59 sleeved on the periphery of the positioning rod 54 is further arranged in the sleeve-shaped shell 56, one end of the spring 59 is connected with the sealed end of the sleeve-shaped shell 56 provided with the driving motor 51, and the other end is connected with the positioning rod 54; the spring 59 is always in a compressed state, and the positioning rod has a tendency of popping towards the inner direction of the roller under the elastic force of the spring so as to control the ejector rod to pop out in time after the eccentric wheel rotates.

In this embodiment, a disc-shaped eccentric wheel 52 is mounted on a rotating shaft of the driving motor 51, the disc-shaped eccentric wheel 52 is parallel to an axis of the positioning rod 54, a center of the disc-shaped eccentric wheel 52 is coaxially fixed with the rotating shaft of the driving motor 51, an eccentric shaft is disposed on an outer periphery of the disc-shaped eccentric wheel 52, and an axis of the eccentric shaft is perpendicular to the eccentric wheel 52. The extending direction of the connecting rod 53 is vertical to the axis of the eccentric shaft, and a first connecting hole is formed in the first end of the connecting rod 53 and hinged to the eccentric shaft; the second end of the connecting rod 53 is provided with a second connecting hole hinged to the end of the positioning rod 54 in the sleeve-shaped housing 56. Preferably, the first connection hole formed at the first end of the connecting rod 53 is a long hole extending along the axial direction of the connecting rod 53, and the extending length of the long hole is greater than the diameter of the eccentric shaft, so as to provide a movement margin for the connecting rod and improve the smoothness of the operation of the crank-link mechanism. Preferably, the mounting plate 57 is provided with a bearing seat 510 for the positioning rod 54 to pass through and be mounted, and the lower end of the positioning rod 54 correspondingly passes through the mounting plate 510 and is hinged with the second end of the connecting rod 53.

In this embodiment, a dynamic seal structure 519 for the positioning rod 54 to pass through is disposed on one side of the sleeve-shaped shell 56 facing the inside of the outer cylinder, and the dynamic seal structure 519 seals the side of the sleeve-shaped shell 56 facing the outside of the outer cylinder and allows the push rod to axially extend and retract through the dynamic seal structure, so as to isolate the inside of the shell from the outer cylinder and prevent water in the outer cylinder from flowing into the shell. Preferably, the dynamic seal structure 519 is an annular shape that can be radially deformed in an expanding and contracting manner, and has an annular inner periphery that is sealingly connected to the outer wall of the positioning rod 54 and an annular outer periphery that is sealingly connected to the housing 56.

In this embodiment, a bellows 58 is disposed in the sleeve-shaped housing 56, and two ends of the bellows 58 are respectively fixed to the mounting plate 57 and the positioning rod 54; the positioning rod 54 is sleeved in the corrugated pipe 58, the spring 59 is sleeved on the outer periphery of the positioning rod 54 and the inner periphery of the corrugated pipe 58, two ends of the spring 59 are respectively connected with the mounting plate 57 and the positioning rod 54, and the upper end of the spring 59 and the connection part of the positioning rod 54 and the corrugated pipe 58 are fixed.

In this embodiment, the outer cylinder 800 is provided with a through hole for the positioning rod 54 to pass through, the upper end of the sleeve-shaped casing 56 is correspondingly installed at the through hole of the outer cylinder 800, and the upper end of the sleeve-shaped casing 56 is hermetically connected with the periphery of the through hole to correspondingly seal the through hole. Through set up the bellows in the casing inside to divide into mutually independent two parts with the casing inside, avoid inside the washing water inflow bellows, influence the flexible removal of locating lever.

EXAMPLE III

As shown in fig. 8 to 10, the present embodiment describes a water inlet structure 900 of a top-loading drum washing machine, the washing machine includes a drum 200 installed in a casing 100 and having no dewatering holes, a laundry input port 3 is provided on a sidewall of the drum 200, and a door 300 capable of turning to open and close the laundry input port is provided on the drum 200; the drum 200 has two sealed ends, the center of the sealed end 2 is connected with the casing 100 via the rotating shaft 11, the rotating shaft 11 at least one end is formed by a hollow sleeve, the hollow forms the flow channel 90 and is communicated with the water inlet pipe of the washing machine.

The water inlet structure is arranged at the central rotating shaft of the drum, so that the use function of the top-opening washing machine for feeding water into the imporous drum is realized, and the imporous drum can smoothly feed water.

In this embodiment, the center of the sealing end 2 of the roller 200 is provided with an inwardly protruding water inlet cavity 99, the penetrating end of the rotating shaft 11 extends into the water inlet cavity 99, and the flow channel 90 formed by the hollow part of the rotating shaft 11 is communicated with the water inlet cavity 99; at least one water outlet 98 is arranged on the water inlet cavity 99, and the water outlet communicates the water inlet cavity 99 with the interior of the roller 200.

In this embodiment, the center of the sealing end 2 of the roller 200 is provided with a water inlet end cover 91 which is in a bowl shape and is installed on the inner wall of the roller in an inverted manner, and the water inlet end cover 91 and the wall of the roller 200 jointly enclose a water inlet cavity 99; the water inlet cover 91 is provided with at least one hollow portion 98 for communicating the water inlet chamber 99 with the interior of the drum 200.

The water inlet end cover is arranged on the washing machine roller, so that the water inlet pipe is communicated with the inside of the roller through the water outlets facing different directions, and the situation that the water inlet of the washing machine is not smooth due to blockage caused by single water outlet of the water inlet pipe is avoided. Simultaneously, set up a water inlet end cover through the sealed end center at the sclausura cylinder to make the rivers of intaking block and produce and scatter the sputter by the water inlet end cover, and then promote the coverage area of rivers of intaking, promote the effect of soaking of clothing. Simultaneously, the inside intake antrum that has water inlet end cover and the common enclosure of cylinder inner wall that sets up of cylinder to carry out cushioning effect, promote into water smooth and easy nature to the rivers of intaking.

In this embodiment, the water inlet end cover 91 is coaxial with the rotating shaft 11, and a plurality of hollow parts 98 are distributed on the side wall of the bowl-shaped water inlet end cover 91; the penetrating end of the rotating shaft 11 extends into the water inlet cavity 99 from the open side of the bowl-shaped water inlet end cover 91; preferably, a circular hollow-out portion 98 coaxial with the rotating shaft 11 is disposed on the bottom wall of the bowl-shaped water inlet end cover 91.

In this embodiment, an outer tub 800 is provided outside the drum 200, a water passing cavity 96 into which the penetrating end of the rotating shaft 11 extends is provided on the outer tub 800, the flow passage 90 formed by the hollow portion of the rotating shaft 11 is communicated with the water passing cavity 96, and the water inlet pipe of the washing machine is communicated with the water passing cavity 96, so that the water inlet pipe is communicated with the flow passage 90 inside the rotating shaft 11 through the water cavity 96. The rotating shaft is communicated with the water inlet pipe of the washing machine through the water cavity, so that the rotating shaft is communicated with the stationary water inlet pipe in a sealing manner, and smoothness of water flow is guaranteed.

In this embodiment, a sleeve-shaped bearing seat 92 is installed at the center of the outer cylinder 800, one end of the bearing seat 92 is fixed to the outer cylinder 800, the other end is fastened and fixed with a bearing cover 93, and a bearing 97 for assembling the rotating shaft 11 is installed in the sleeve-shaped bearing cover 93; the center of the bearing cover 93 is provided with a groove which is opened towards one side of the rotating shaft 11, and the groove forms a water passing cavity 96.

In this embodiment, the opening of the groove is provided with a ring of sealing rings 94; the penetrating end of the rotating shaft 11 extends into the water passing cavity 96 from the opening of the groove, the inner periphery of the sealing ring 94 is sealed with the outer periphery of the rotating shaft 11, and the outer periphery of the sealing ring 94 is sealed with the inner wall of the groove.

In this embodiment, an opening is formed on the opposite side of the groove, a joint 95 communicated with the inside of the water passing cavity 96 is formed on the bearing cover 93, and the water inlet pipe of the washing machine is communicated with the joint 95.

In this embodiment, the outer cylinder 800 is sleeved outside the drum 200, and the upper part of the outer cylinder 800 is connected with the casing 100 through the suspension spring 82 and/or the lower part through the shock-absorbing rod 83; the outer cylinder 800 is cylindrical, two ends of the cylindrical outer cylinder 800 are sealed, a rotating shaft 11 which is formed by a sleeve and is arranged in a penetrating mode is arranged in the center of the sealing end 2, the rotating shaft 11 extends along the axis of the roller 200, the rotating shaft 11 can be assembled on the outer cylinder 800 in a relatively rotating mode through a bearing 97, the penetrating end of the rotating shaft 11 extends into the outer cylinder 800 and is fixed with the roller 200, and the penetrating end of the rotating shaft 11 is communicated with a water inlet pipe of the washing machine through the water cavity 96.

Example four

As shown in fig. 11 to 16, the present embodiment describes a ventilating structure of a top-loading drum washing machine, which includes a drum 200 installed in a casing 100 without a dehydrating hole, both ends of the drum 200 being sealed to enclose a sealed container; the drum 200 is provided with the air holes 60, and the air holes 60 are provided with the air valves 600, so that the inside and the outside of the drum 200 are communicated with each other through the air valves 600 and blocked by water flow. The inside of the roller without the dewatering holes can be mutually ventilated with the outside through the air holes communicated with the outside arranged on the roller, so that the pressure inside the roller is adjusted, and the aim of smoothly feeding water into the roller or smoothly discharging water outwards is fulfilled.

As shown in fig. 13, in the present embodiment, a bidirectional vent valve 603 is installed at the vent 60, so that the gas inside or outside the drum 200 flows to the outside or inside of the drum through the vent valve 603. In this embodiment, the bleeder vent is located one side sealing end department of cylinder, and after the cylinder stopped to rotate to the fixed position, the bleeder vent was in cylinder center top.

In this embodiment, the two-way vent valve 603 includes a valve plate 62 covering the vent 60, the valve plate 62 is in a flat plate shape, and the valve plate 62 is provided with a slit 63.

In this embodiment, the breather valve 600 further includes a bracket 61 installed at the breather hole 60, the bracket 61 includes a disk shape covering the breather hole 60 and having a plurality of hollow portions 64, and an outer circumference of the disk-shaped bracket 61 is hermetically fixed to an inner circumference of the breather hole 60; the side of the bracket 61 away from the drum 200 is covered with a valve plate 62, and the valve plate 62 is provided with a slit 63 through which only air flows.

In this embodiment, the support 61 includes two rings of annular brace rods that are coaxial, not isodiametric, and the outer lane annular brace rod links to each other through many splice bars along radial extension between the annular brace rod of inner circle, and evenly arranging of each splice bar equidistant angle, the both ends of each splice bar are connected with the inner periphery of outer lane annular brace rod and the periphery of inner circle annular brace rod respectively.

In this embodiment, the outer ring support rib has a certain extension width along the axial direction, and one side of the outer ring support rib close to the inside of the drum is connected with the connecting rib, and one side of the outer ring support rib far away from the drum 200 is laid and covered with the valve plate 62.

In this embodiment, the valve plate 62 is made of an elastic material, so as to generate deformation under the action of the pressure difference between two sides to close or open the slit 63 formed on the valve plate 62; preferably, the slit 63 of the valve plate 62 is in a cross shape, and the center of the cross shape is overlapped with the center of the vent 60.

EXAMPLE five

As shown in fig. 17 to 20, the present embodiment is different from the fourth embodiment in that: two

air holes

611 and 612 are arranged on the same sealing end 2 of the roller 200, and a first one-way vent valve 601 and a second one-way vent valve 602 are respectively arranged at the two air holes, so that the directions of the air flowing through the two air holes are opposite.

As shown in fig. 18, in this embodiment, the first one-way vent valve 601 includes a valve plate 63 covering the first vent 611, the valve plate 63 is in a cone shape protruding outward of the drum 200, and a slit 62 is formed on the cone-shaped valve plate 63; as shown in fig. 19, the second one-way vent valve 602 includes a valve plate 63 covering the second vent 612, the valve plate 63 is in a conical shape protruding into the drum 200, and a slit 62 is formed on the conical valve plate 63.

In this embodiment, the washing machine is further provided with a positioning structure 500 to control the drum 200 to stop rotating to a fixed position, and the first air hole 611 is located on the upper side of the second air hole 612 when the drum 200 rotates to the fixed position; preferably, when the drum 200 rotates to the fixed position, the first air hole 611 is located at the upper side of the center of the drum 200, and the second air hole 612 is located at the lower side of the center of the drum 200; it is further preferred that the first and second airing holes 611 and 612 are vertically above and below the center of the drum 200, respectively, when the drum 200 is rotated to the fixed position. Preferably, the positioning structure 500 in this embodiment may adopt the positioning structure described in the second embodiment, or may adopt other technical solutions that can realize roller positioning in the prior art.

EXAMPLE six

As shown in fig. 11 to 20, in the present embodiment, an installation structure of the breather valve 600 according to the fourth or fifth embodiment is described, where the breather valve 600 includes a valve plate 62, and a slit 63 is formed on the valve plate 62 for only allowing gas to flow therethrough; the valve plate 62 is assembled on a mounting structure, the mounting structure comprises a bracket 61 which is mounted at the air vent 60 of the roller 200, the bracket 61 comprises a disc-shaped main body which covers the air vent 60 and is provided with a plurality of hollow parts, and the outer periphery of the disc-shaped bracket 61 is sealed and fixed with the inner periphery of the air vent 60; the side of the bracket 61 far away from the roller is covered with a valve plate 62, and the valve plate 62 is provided with a slit 63 through which the air only flows. The valve plate 62 is spaced from the disc-shaped bracket 61 by a certain distance to leave a space for movement of deformation of the valve plate 62.

Through the arrangement, the valve plate can be fixedly assembled on the air hole of the roller, so that the fixed installation of the air vent valve plate is realized; meanwhile, due to the blocking effect of the support, the valve plate is prevented from being in direct contact with clothes and water flow in the drum, and the valve plate is prevented from being directly impacted to damage the valve plate.

In this embodiment, the support 61 includes two rings of annular brace rods that are coaxial, not isodiametric, and the outer lane annular brace rod links to each other through many splice bars along radial extension between the annular brace rod of inner circle, and evenly arranging of each splice bar equidistant angle, the both ends of each splice bar are connected with the inner periphery of outer lane annular brace rod and the periphery of inner circle annular brace rod respectively. Preferably, the inner ring annular support rib is arranged close to the inner part of the roller relative to the outer ring annular support rib, so that the connecting rib extends in an inward inclined manner.

In this embodiment, the outer loop brace rod has certain extension width along the axial, and the outer loop brace rod links to each other with the splice bar near the inside one side of cylinder, keeps away from one side of cylinder and lays and cover and have the valve block.

In this embodiment, the valve plate 62 may be a two-way valve plate which is flat and can flow air to two sides in two directions; the valve plate can also be a conical one-way valve plate which can only flow air in one direction at the convex side.

In this embodiment, the drum 200 is provided with the air holes 60, the support 61 is correspondingly covered and assembled in the air holes 60, and the periphery 61 of the support is hermetically attached to the inner wall of the air holes 60; preferably, the outer ring support rib of the bracket 61 is correspondingly sealed and attached to the inner wall of the air hole 60; further preferably, the inner side and the outer side of the outer ring support rib are respectively provided with outward bent flanges, and the flanges are correspondingly attached to the inner side and the outer side of the roller 200, so that the bracket 61 is tightly assembled on the roller 200.

EXAMPLE seven

As shown in fig. 21 to 23, the present embodiment describes a drum door structure of a top-loading drum washing machine, the washing machine includes a drum 200 installed in a casing 100 and having no dewatering holes, a laundry input opening 3 is provided on a sidewall 1 of the drum 200, and a door 300 for controllably opening and closing the laundry input opening 3 is provided on the drum 200; the door 300 is hinged to the drum 200 at one side thereof about the rotation shaft 31 and is provided at the opposite end thereof with a rotatable latch 32, so that the latch 32 is locked to or released from the drum 200.

In this embodiment, the latch 32 is pivotally mounted on the door cover 300, and the pivot of the latch 32 extends along the radial direction of the drum 200; at least part of the bolt 32 protrudes out of the door cover 300, and the protruding part is provided with a locking hook 320 protruding towards the inside of the drum 200; the outer wall of the drum 200 is provided with a locking groove 33 for the locking hook 320 to correspondingly slide into.

In this embodiment, the outer side of the drum 200 is provided with a lock groove 33, one side of the lock groove 33 is provided with an opening for the bolt 32 to slide in, and the lock groove 33 and the bolt 32 are at least partially located in a coincident plane, so that the bolt 32 and the lock groove 33 are locked with each other after sliding into the lock groove 33 correspondingly.

In this embodiment, the latch 32 includes a sheet-shaped plate extending along the outer side of the drum 200, the middle of the sheet-shaped plate is provided with a downwardly protruding rotating shaft 37, the rotating shaft 37 passes through a through hole formed in the door cover 300, the penetrating end of the rotating shaft 37 is fixedly connected with a fixing member, and the periphery of the fixing member exceeds the through hole, so that the latch 32 in the sheet-shaped plate shape can be rotatably mounted on the door cover 300 around the rotating shaft 37. Preferably, the thickness of the flaky plate forming the lock tongue is gradually reduced towards one side of the lock groove, so as to guide the lock tongue to slide into the lock groove and lock; further preferably, the opening to be measured of the lock groove is a gradually narrowed horn mouth, so that the smoothness of the sliding-in of the lock bolt is further improved.

In this embodiment, a strip-shaped handle rib 36 protruding upwards is disposed on the upper side of the lock tongue 32 of the sheet-shaped plate, and the handle rib 36 extends along the periphery of any cross section of the drum 200, so that a user can hold and further twist the lock tongue 32.

In this embodiment, one side of the plate-shaped latch tongue 32 protrudes from the door cover 300, and the protruding portion is provided with a protruding rib protruding toward the inner side of the drum 200, so that the protruding rib of the protruding portion forms the latch hook 320. Preferably, one side surface of the convex rib facing the rotating shaft is arc-shaped; the locking groove 33 of the drum 200 is in a corresponding arc shape near one side of the rotating shaft, so that the convex rib correspondingly slides into the locking groove 33 and then is in contact with the contact surface near one side of the rotating shaft, thereby improving the locking stability. It is further preferred that the grip rib 36 extends in a radial direction across the center of the circular arc rib.

In this embodiment, the outer side of the drum 200 is provided with a convex rib 34 protruding outwards, and a side of the convex rib 34 away from the rotating shaft 37 forms a locking groove 33; the extending end of the convex rib part 34 is in limit contact with the lower side of the locking tongue 32 of the sheet-shaped plate; the side of the rib 34 away from the rotating shaft 37 is an arc surface corresponding to the locking hook 320, the distance between the arc surface outside the rib 34 and the center of the rotating shaft 37 is equal to the distance between the arc surface inside the locking hook 320 and the center of the rotating shaft 37, and the rib 34 and the locking hook 320 are at least partially overlapped in the height direction, so that the locking tongue 32 and the rib 34 are locked when the locking tongue 32 rotates to contact with the rib.

In this embodiment, a pressing sheet 35 extending along the outer circumference of the roller 200 is further disposed outside the roller 200, and the pressing sheet 35 is located on a side of the rib 34 away from the rotating shaft 37; one side of the pressing sheet 35, which is far away from the convex rib part 34, is fixed with the roller 200, and the other side is positioned above the convex rib part 34 and is separated by a certain gap, and the gap can be used for the bolt 32 in a sheet shape to extend into; preferably, the upper side of the latch tongue 32 of the sheet-shaped plate material is in contact with the lower side of the pressing piece 35, so that the clearance space between the pressing piece 35 and the rib part 34 forms the locking groove 33. More preferably, one end of the pressing piece 35 is bent toward the drum 200 to be hermetically connected, so that the locking groove 33 formed by the gap between the pressing piece 35 and the rib 34 is provided with one end sealed and the other end open.

In this embodiment, the roller 200 is provided with an installation groove recessed inwards, and the rotating shaft 37 penetrating through the door cover 300 is correspondingly arranged in the installation groove; the side of the mounting groove close to the clothes input opening 3 is provided with a sealing ring 360, at least part of the sealing ring 360 protrudes out of the roller 200, and after the door 300 is buckled on the clothes input opening 3, the sealing ring 360 is extruded by the buckled door 300 to seal the buckled part.

In this embodiment, a plurality of locking tongues 32 are arranged on one side of the door, a plurality of locking grooves 33 are arranged on the side of the drum 200 corresponding to the clothes inlet 3, and the locking tongues 32 and the locking grooves 33 are arranged in a one-to-one correspondence manner, so as to increase the number of closing and locking electricity between the door and the drum and improve the assembly stability of the door. And the opening of each lock slot 33, into which the corresponding lock tongue 32 slides, is disposed toward the same side, so that the user can rotate the lock tongue to open the door.

Example eight

As shown in fig. 11 and 12, the present embodiment describes a top-loading drum washing machine, which includes a drum 200 installed in a casing 100 and having no dewatering holes, a laundry input opening 3 is formed on a sidewall 1 of the drum 200, and a door 300 for controllably opening and closing the laundry input opening 3 is formed on the drum 200; a plurality of lifting ribs 210 protruding inwards are arranged on the side wall 1 of the drum 200, a drainage structure 400 is arranged on the side of the drum 200 opposite to the clothes input opening 3, and the center of gravity of the drum 200 is located at the central axis.

Through the arrangement, the gravity center of the imperforate drum of the top-opening drum washing machine is positioned on the axis, so that the situation of deviation generated in the rotation process of the drum is avoided.

In this embodiment, when the drum 200 is in the fixed position, the laundry input port 3 is located at the topmost part of the drum 200, and the drainage structure 400 is located at the bottommost part of the drum 200.

In this embodiment, three lifting ribs 210 are arranged on the inner side of the sidewall 1 of the drum 200, wherein two lifting ribs 210 are respectively disposed on the left and right sides of the laundry input opening 3, and another lifting rib 210 is disposed on the opposite side of the laundry input opening 3. Preferably, the lifting ribs 210 at the opposite side of the laundry input port 3 are disposed offset to the hinge side of the door 300 such that the center of gravity of the drum 200 is at the center.

In this embodiment, each lifting rib 210 extends along the structural line of the wall of the drum 200.

In this embodiment, the drainage structure 400 includes a drainage port 45 disposed on the sidewall of the drum, and the center of the drainage port 45 and the center of the door 300 are disposed opposite to the axis of the drum 200.

In this embodiment, the washing machine is provided with a positioning structure 500 to control the drum 200 to stop at a fixed position when the rotation stops. The positioning structure 500 includes a positioning groove 55 formed on the sidewall 1 of the drum 200, the positioning groove 55 being formed on a side of the lifting rib 210 away from the drain opening 45 opposite to the laundry input opening 3 such that the center of gravity of the drum 200 is located at the center. It is further preferable that the drainage structure 400 is in the same radial direction of the drum 200 as the center of the door cover 300.

Example nine

The present embodiment differs from the above embodiments in that: as shown in fig. 24 to 27, the present embodiment describes a water inlet structure of a top-loading drum washing machine, the washing machine includes a drum 800 installed in a housing 100 and having no dewatering holes, a laundry input opening 3 is formed on a sidewall of the drum 200, and a door 300 for turning over to open and close the laundry input opening is formed on the drum 200; a water inlet 995 is arranged on the roller 200, and a valve core 913 which is correspondingly closed and opened is arranged at the water inlet 995; a water inlet structure 900 is further installed in the housing 100 to open the valve core 913 and the water inlet 995 after the drum 200 is rotated to a fixed position.

By arranging the structure on the roller, the roller is driven to rotate to a fixed position and is acted by the water inlet structure to correspondingly push away the valve core arranged at the water inlet, so that the water inlet of the imporous roller is correspondingly opened, and the smooth water inlet using function of the top-open imporous roller washing machine is realized.

In this embodiment, the valve core 913 is correspondingly disposed inside the drum 200 in a covering manner, the valve core 913 is connected to the drum 200 through the spring 914, and the spring 914 applies an elastic pressure to the valve core 913 from inside to outside along a radial direction of the drum 200, so that the valve core 913 blocks the water inlet 995.

The valve core at the water inlet is connected with the roller through the spring, so that the valve core is subjected to the acting force of the spring on the valve core to close the water inlet in real time, and the phenomenon that the centrifugal force, the water flow impact force and the like in the rotation process of the roller act on the valve core to enable the water inlet to be opened by mistake is avoided.

In this embodiment, a support cover 911 is disposed inside the drum 200 opposite to the water inlet, the outer periphery of the support cover 911 is fixedly connected to the drum 200, a valve core 913 is disposed between the support cover 911 and the water inlet 995, a certain moving gap is formed between the valve core 913 and the support cover 911, a spring 914 extending along the radial direction of the drum 200 and in a compressed state is disposed in the moving gap, and two ends of the spring 914 respectively abut against the support cover 911 and the valve core 913. Preferably, the end of the spring 914 abuts against the center of the valve core 913 to prevent the valve core 913 from being displaced when the elastic force is applied to the valve core 913, thereby preventing the valve core 913 from completely closing the water inlet 995. Further preferably, an outer peripheral side wall of the holder cover 911 is at least partially hollowed out, so that the movable gap communicates with the inside of the drum 200 through the hollowed-out portion.

In this embodiment, the bracket cover 911 is a bowl-shaped structure that is reversely buckled on the inner wall of the drum 200, an opening of the bowl-shaped bracket cover 911 is fixedly connected with the inner wall surface of the drum 200, so that a water inlet chamber 915 is enclosed between the bracket cover 911 and the drum, and the water inlet 995 is communicated with the water inlet chamber 915. A plurality of hollowed-out portions are arranged on the side wall of the bowl-shaped support cover 911, and each hollowed-out portion communicates the water inlet chamber 915 with the inside of the drum 200. Preferably, the water inlet 995 is coaxially arranged with the bowl-shaped holder cover 911. The radial width of the inner wall of the water inlet chamber 915 is gradually narrowed from bottom to top, a circle of sealing ring 912 made of elastic deformation materials such as rubber is sleeved on the outer periphery of the valve core 913, the outer periphery of the sealing ring 912 is in limited contact with the inner side wall of the support cover 911, and the radial width of the sealing ring 912 is smaller than the minimum radial width of the water inlet chamber 915.

In this embodiment, the valve element 913 is a horizontally disposed disc shape, and the outer circumference of the valve element 913 is spaced from the inner wall of the bowl-shaped bracket cover 911 by a certain gap. A cylindrical limiting rib 917 which is coaxially arranged and extends downwards from the support cover 911 is arranged at the center of the bowl-shaped support cover 911, a sleeve 916 which extends upwards is arranged at the center of the disc-shaped valve core 913, and the limiting rib 917 is correspondingly inserted into the sleeve 916; and the axial extension height of the limiting rib 917 and the sleeve 916 is smaller than the height of the bowl-shaped bracket cover 911 to reserve a moving gap for the up-and-down movement of the valve core 913. The spring 914 is sleeved on the limiting rib 917 and the periphery of the sleeve 916, the upper end of the spring 914 is in limited abutting contact with the support cover 911, and the lower end of the spring 914 is in limited abutting contact with the disc-shaped valve core 913. The lower side of the valve core 913 is provided with a limiting groove for the extension end of the top rod 994 to be inserted correspondingly. Preferably, the downside of disk case 913 is equipped with coaxial setting, the convex stopper downwards, and the stopper comprises materials such as rubber that can produce elastic deformation, and the downside of stopper is equipped with the flexible end that supplies the ejector pin and corresponds male spacing groove. Further preferably, a circle of limiting groove protruding outward is formed at the outer circumference of the water inlet 995, and the outer diameter of the sealing ring 913 is equal to or slightly smaller than the inner diameter of the limiting groove, so that when the valve core 913 abuts against the side wall of the drum 200 due to the spring, the outer circumference of the sealing ring 913 abuts against the inner circumference of the limiting groove, so that the valve core 913 seals the water inlet 995 correspondingly.

In this embodiment, the water inlet structure includes a top rod 994 capable of moving along the radial direction of the roller 200 in a telescopic manner, and the top rod 994 and the water inlet 995 are disposed in the same rotational section of the roller 200, so that the telescopic end of the top rod 994 can correspondingly extend into the water inlet 995 to open the valve core 913. Preferably, when the drum rotates to the fixed position, the push rod and the water inlet are in the same extension straight line, and the push rod is driven to move along the radial direction of the drum from outside to inside so as to correspondingly push open the valve core 913 at the water inlet 995. It is further preferred that the water inlet 995 is located at the upper portion of the drum 200 and the water inlet 995 is at least higher than the maximum water inlet level of the drum 200 when the drum 200 is rotated to the fixed position, for the purpose of allowing the gas inside the drum 200 to communicate with the outside through the water inlet and adjusting the pressure inside the drum.

As shown in fig. 26 and 27, in the present embodiment, the top rod 994 is formed by a hollow sleeve, the hollow portion of the sleeve forms a flow channel 990, the flow channel opening 941 at the telescopic end of the top rod 994 corresponds to the water inlet 995, so that the flow channel 990 is communicated with the inside of the drum 200 after the telescopic end of the top rod 994 correspondingly extends into the water inlet 995; the runner port 942 at the other end of the top bar 994 is connected to the water inlet pipe of the washing machine, so that the inlet water of the washing machine flows into the drum 200 through the inner runner 990 of the top bar 994 and the water inlet 995.

In this embodiment, a plurality of openings are arranged on the side wall of the telescopic end of the top rod 994, and each opening is respectively communicated with the inside of the flow channel 990 through a flow channel opening 941; the end of the top rod 994 penetrating the bearing seat 910 is bent radially to one side, the bent end forms a joint communicated with the water inlet pipe of the washing machine, and the joint forms a flow passage opening 942 and is communicated with the inside of the flow passage 990.

In this embodiment, the top rod 994 is connected to the rotating shaft of the driving motor 991 via a crank-link mechanism, so that the top rod 994 is driven by the crank-link mechanism to generate a telescopic displacement along the radial direction of the drum 200 during the rotation of the rotating shaft of the driving motor 991. Preferably, the crank-link mechanism comprises an eccentric wheel 992, the center of the eccentric wheel 992 is coaxially fixed with the rotating shaft, the periphery of the eccentric wheel 992 is hinged with one end of a connecting rod 993, and the other end of the connecting rod 993 is hinged with a top rod 994.

In this embodiment, the water inlet structure further includes a sleeve-shaped housing 996, the sleeve-shaped housing 996 is installed outside the outer cylinder 800 along the radial direction of the drum 200; in ejector pin 994 coaxial wears to locate cover barrel casing 996, the sealed setting of one end of cover barrel casing 996 to be equipped with the opening that supplies the flexible end of ejector pin 994 to wear out, and this end and urceolus 800 looks fixed connection of cover barrel casing 996 to make the ejector pin can only follow the radial flexible removal that produces of cylinder under the limiting displacement of cover barrel casing. The other end of the sleeve-shaped shell 996 is provided with a mounting plate 997 with a sealed opening, a driving motor 991 is fixedly mounted on one side of the mounting plate 997 far away from the sleeve-shaped shell 996, and a rotating shaft of the driving motor 991 is arranged in parallel with the axis of the roller 200. Preferably, a spring 999 sleeved on the periphery of the ejector rod 994 is further arranged in the sleeve-shaped shell 996, one end of the spring 999 is connected with the sealed end of the sleeve-shaped shell 996 provided with the driving motor, and the other end of the spring is connected with the ejector rod 994; the spring 999 is always in a compressed state, and the top rod 994 has a tendency of popping towards the inner direction of the roller under the elastic force of the spring, so that the top rod is controlled to pop out in time after the eccentric wheel rotates.

In this embodiment, a disc-shaped eccentric wheel 992 is mounted on a rotating shaft of the driving motor 991, the disc-shaped eccentric wheel 992 is parallel to an axis of the top rod 994, the center of the disc-shaped eccentric wheel 992 is coaxially fixed to the rotating shaft of the driving motor 991, an eccentric shaft is disposed on the periphery of the disc-shaped eccentric wheel 992, and an axis of the eccentric shaft is perpendicular to the eccentric wheel 992. The extending direction of the connecting rod 993 is vertical to the axis of the eccentric shaft, and a first connecting hole is formed in the first end of the connecting rod 993 and hinged with the eccentric shaft; the second end of the connecting rod 993 is provided with a second connecting hole which is hinged with one end of the top rod 994 in the sleeve-shaped shell. Preferably, the first connection hole formed at the first end of the connecting rod 993 is a long hole extending along the axial direction of the connecting rod 993, and the extending length of the long hole is greater than the diameter of the eccentric shaft, so that a movement margin is provided for the connecting rod, and the smoothness of the operation of the crank-link mechanism is improved. Preferably, the mounting plate 997 is provided with a bearing seat 910 for the top rod 994 to pass through and be mounted, and the lower end of the top rod 994 correspondingly passes through the mounting plate 997 and is hinged with the second end of the connecting rod 993, so that the top rod is fixedly mounted on the outer cylinder under the action of the bearing seat, and the top rod can only generate telescopic movement along the axial direction of the roller under the action of the bearing seat.

In this embodiment, a dynamic seal structure for the push rod 994 to pass through is disposed on one side of the sleeve-shaped housing 996 facing the inside of the outer cylinder, and the dynamic seal structure 919 seals the sleeve-shaped housing 996 facing the outside of the outer cylinder and allows the push rod to axially extend and retract through the dynamic seal structure, so as to achieve isolation between the inside of the housing and the outer cylinder and prevent water in the outer cylinder from flowing into the housing. Preferably, the dynamic sealing structure 919 is annular and can generate radial expansion deformation, the inner periphery of the annular is connected with the outer wall of the push rod 994 in a sealing mode, and the outer periphery of the annular is connected with the shell in a sealing mode.

In this embodiment, a corrugated tube 998 is disposed in the sleeve-shaped housing 996, and two ends of the corrugated tube 998 are respectively fixed to the mounting plate 910 and the top rod 994, so as to divide the sleeve-shaped housing into an inner layer and an outer layer which are independent of each other; ejector pin 994 suit is in bellows 998, and the spring 999 suit is in ejector pin 994 periphery, bellows 998 internal periphery, and the both ends of spring 999 are connected with mounting panel 910 and ejector pin 994 respectively, and spring 999 upper end and ejector pin 994 are fixed mutually with bellows 998 junction.

In this embodiment, the outer cylinder 800 is provided with a through hole for the push rod 994 to pass through, the upper end of the sleeve-shaped housing 996 is correspondingly installed at the through hole of the outer cylinder 800, and the upper end of the sleeve-shaped housing 996 is hermetically connected with the periphery of the through hole to correspondingly seal the through hole. Through set up the bellows in the casing inside to divide into two parts of mutual independence with the casing is inside, avoid inside the washing water inflow bellows, influence the flexible removal of ejector pin.

As shown in fig. 24 and 25, the water inlet structure of the present embodiment can be used in combination with the positioning structure of the second embodiment, such that the drum 200 is stopped to a fixed position by the positioning structure 500, and the water inlet 995 is located at the upper portion of the drum 200 higher than the maximum water inlet level of the drum 200; then, the top rod 994 of the water inlet structure 900 is controlled to move to open the valve core at the water inlet 995, so that the roller 200 is communicated with the outside through the water inlet 995 to perform air exchange treatment. Of course, the washing machine may be provided with the water inlet structure 900, the positioning structure 500 and the water discharge structure 400 at the same time, so that after the drum 200 is moved to a fixed position by the positioning structure 500, the water outlet 45 of the drum 200 corresponds to the top bar 44 of the water discharge structure 400, and the water inlet 995 corresponds to the top bar 994 of the water inlet structure 900, for water discharge and air exchange, respectively. Preferably, the positioning structure 500 and the water inlet structure 900 and the water discharge structure 400 are alternately arranged in different sections of the drum 200 to avoid interference.

Example ten

In this embodiment and based on the ninth embodiment, a radially protruding lifting rib is arranged on the inner side of the drum of the washing machine, the lifting rib is hollow, and a through hole is formed in the lifting rib to communicate the hollow chamber with the drum; the water inlet is arranged on the drum wall corresponding to the lifting rib, so that the water inlet is positioned on the drum wall outside the lifting rib, and the outside of the drum is communicated with the hollow part inside the lifting rib through the openable and closable water inlet, so that the aim of supplying water outside the drum into the drum through the water inlet is fulfilled; meanwhile, the water inlet is hidden in the lifting rib, so that the aims of hiding sealing valves and other structures arranged at the water inlet in the lifting rib and avoiding contact with clothes are fulfilled.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A drum washing machine comprises a drum which is arranged in a shell and is not provided with a dewatering hole, a clothes input opening is arranged on the side wall of the drum, and a door body which can turn over to open and close the clothes input opening is arranged on the drum; the method is characterized in that: a water inlet is arranged on the roller, and a valve core with a corresponding closed opening is arranged at the water inlet; the shell is also internally provided with a water inlet structure so as to open the valve core and open the water inlet after the roller rotates to a fixed position, and the water inlet pipe of the washing machine is communicated with the inside of the roller through the water inlet.

2. A drum washing machine according to claim 1, characterized in that the valve core is correspondingly covered and arranged at the inner side of the drum, the valve core is connected with the drum through a spring, and the spring applies an elastic pressure to the valve core along the radial direction of the drum from inside to outside so that the valve core blocks the water inlet;

preferably, a support cover arranged opposite to the water inlet is arranged on the inner side of the roller, the periphery of the support cover is fixedly connected with the roller, the valve core is arranged between the support cover and the water inlet, a certain movable gap is formed between the valve core and the support cover, a spring which extends along the radial direction of the roller and is in a compressed state is arranged in the movable gap, and two ends of the spring are respectively abutted against the support cover and the valve core; at least part of the periphery of the support cover and the roller are hollowed out, so that the movable gap is communicated with the inside of the roller through the hollowed-out part.

3. A drum washing machine according to claim 1 or 2, characterized in that the water inlet structure comprises a push rod capable of moving in a telescopic manner along the radial direction of the drum, the push rod and the water inlet are arranged in the same rotary section of the drum, so that the telescopic end of the push rod can correspondingly extend into the water inlet to push the valve core open;

preferably, when the roller rotates to a fixed position, the ejector rod and the water inlet are positioned on the same extension straight line, and the ejector rod is driven to move along the roller in the radial direction from outside to inside so as to correspondingly jack the valve core at the water inlet.

4. A drum washing machine as claimed in claim 3, characterized in that the top bar is formed by a hollow sleeve, the hollow part of the sleeve forms a flow passage, the flow passage opening of the telescopic end of the top bar corresponds to the water inlet, so that the flow passage is communicated with the inside of the drum after the telescopic end of the top bar correspondingly extends into the water inlet; the runner port at the other end of the ejector rod is communicated with a water inlet pipe of the washing machine, so that the inlet water of the washing machine flows into the roller from the water inlet through the inner runner of the ejector rod.

5. A drum washing machine according to claim 4, characterized in that the top bar is connected with the rotating shaft of the driving motor through a crank-link mechanism, so that the top bar is driven by the crank-link mechanism to generate telescopic displacement along the radial direction of the drum during the rotation of the rotating shaft of the driving motor;

preferably, the crank-link mechanism comprises an eccentric wheel, the center of the eccentric wheel is coaxially fixed with the rotating shaft, the periphery of the eccentric wheel is hinged with one end of a connecting rod, and the other end of the connecting rod is hinged with the ejector rod.

6. The top-loading drum washing machine as claimed in claim 4, wherein the water inlet structure further comprises a sleeve-shaped housing, the top rod coaxially penetrates through the sleeve-shaped housing, one end of the sleeve-shaped housing is hermetically provided with an opening for the telescopic end of the top rod to penetrate through, so that the top rod can only telescopically move along the radial direction of the drum under the limiting action of the sleeve-shaped housing; the other end of the sleeve-shaped shell is fixedly arranged on the shell;

preferably, a spring sleeved on the periphery of the ejector rod is further arranged in the sleeve-shaped shell, one end of the spring is connected with the sealing end of the sleeve-shaped shell, and the other end of the spring is connected with the ejector rod; the spring is always in a compressed state, and the ejector rod has a tendency of popping towards the inner direction of the roller due to the elasticity of the spring.

7. A drum washing machine according to claim 6, characterized in that the outer periphery of the drum is bumped with an outer drum, the water inlet structure is mounted on the outer drum; preferably, an end portion of the sleeve-shaped housing is fixedly attached to an inner peripheral side of the outer cylinder.

8. A drum washing machine according to any one of claims 1 to 7, characterized in that the housing is provided with positioning means to limit the rotation of the drum to a fixed position; the positioning device comprises a positioning groove which is arranged on the periphery of the roller and is sunken towards the inside of the roller and a positioning rod which can stretch and move along the radial direction of the roller, and the positioning rod and the positioning groove are arranged in the rotating section of the same roller so that the stretching end of the positioning rod can correspondingly stretch into the positioning groove;

preferably, when the positioning rod is inserted into the positioning groove, the roller rotates to a fixed position, and the water inlet is positioned at the upper part of the roller and is at least higher than the maximum water inlet level of the roller.

9. A drum washing machine according to claim 8, characterized in that the positioning rod and the water inlet are in different rotation sections of the drum, making the water inlet structure and the positioning device arranged in a staggered way;

preferably, the positioning rod is connected with a rotating shaft of the driving motor through a crank connecting rod mechanism so as to drive the positioning rod to generate telescopic displacement along the radial direction of the roller through the crank connecting rod mechanism in the rotating process of the rotating shaft of the driving motor;

preferably, the crank-link mechanism comprises an eccentric wheel, the center of the eccentric wheel is coaxially fixed with the rotating shaft, the periphery of the eccentric wheel is hinged with one end of a connecting rod, and the other end of the connecting rod is hinged with the positioning rod.

10. A drum washing machine according to any one of claims 1 to 9, characterized in that the drum is provided with a radially protruding lifting rib on the inner side, the lifting rib is hollow inside, and the lifting rib is provided with a through hole to communicate the hollow chamber with the drum; the water inlet is arranged on the wall of the roller corresponding to the lifting rib, so that the water inlet is communicated with the inside of the roller through the hollow part inside the lifting rib.