CN114438753A - Drum washing machine - Google Patents

Abstract

The invention belongs to the technical field of washing equipment and aims to solve the problem that an existing drum washing machine is inconvenient to clean. To this end, the present invention provides a drum washing machine, comprising: a box body; a fixing device; a washing drum rotatably disposed in the fixing device, the washing drum for containing articles to be washed and washing water; a water inlet and outlet device which is communicated with the washing cylinder so as to supply water into the washing cylinder or discharge water in the washing cylinder; the water inlet and drainage device comprises a first water inlet and drainage assembly, an adapter and a second water inlet and drainage assembly which are sequentially communicated, the first water inlet and drainage assembly is communicated with the washing cylinder, the second water inlet and drainage assembly is communicated with the outside, the adapter is installed on the fixing device, and the first water inlet and drainage assembly and the part of the adapter connected with the first water inlet and drainage assembly can rotate along with the washing cylinder. By eliminating the outer drum of the washing machine, only one washing drum is reserved for containing the articles to be washed and the washing water, so that the washing machine is very convenient as only the inside of the washing drum needs to be cleaned.

Description

Drum washing machine

Technical Field

The invention belongs to the technical field of washing equipment, and particularly provides a drum washing machine.

Background

A washing machine is a cleaning appliance that washes laundry using mechanical action generated by electric energy. The current washing machines mainly include a pulsator type washing machine and a drum type washing machine.

The existing drum washing machine mainly comprises a box body, an outer drum, an inner drum and a driving device, wherein the outer drum, the inner drum and the driving device are arranged in the box body, the inner drum is rotatably arranged in the outer drum, and the driving device can drive the inner drum to rotate. After the use for a period of time, on the outer wall of inner tube and the inner wall of urceolus, can bond a lot of impurity, under airtight moist environment, easily breed the bacterium, influence user's healthy. Therefore, the washing machine needs to be cleaned periodically.

However, for the drum washing machine, professional after-sales personnel are needed to clean the drum washing machine more thoroughly, and the ordinary consumers cannot complete the cleaning work well. Because the inner and outer drums of the drum washing machine cannot be easily disassembled by people during design, the inner and outer drums cannot be thoroughly cleaned.

Patent publication No. CN206266888U discloses a washing machine comprising: the washing machine comprises a base, a washing barrel, a driving piece, a water inlet pipe and a water outlet pipe, wherein the washing barrel is rotatably arranged on the base around a horizontal rotating central shaft, and a washing cavity is defined in the washing barrel; one end of the water inlet pipe extends into the washing cavity, the other end of the water inlet pipe extends out of the washing cavity, one end of the water inlet pipe is provided with a nozzle extending upwards, the nozzle is in a hollow tubular shape with a closed upper end, and a plurality of water spray holes are formed in the peripheral wall of the nozzle; one end of the drain pipe extends into the washing cavity, the other end of the drain pipe extends out of the washing cavity, at least one part of one end of the drain pipe extends along the vertical downward direction, and a plurality of water passing holes are formed at the lower end of the drain pipe; the output shaft of the driving piece is fixedly connected with the washing barrel relatively, and the driving piece is used for driving the washing barrel to rotate. That is, this patent discloses a drum washing machine without an outer tub, but in order to realize water supply and drainage, the washing machine has a water inlet pipe and a water outlet pipe directly extending into a washing chamber, which has two very serious drawbacks, the first one is that water in the washing tub is easily leaked to cause a safety accident, and specifically, when the water pipe is extended into the washing chamber, it is necessary to open a hole on the tub wall of the washing tub to allow the water pipe to pass through, but the water pipe is stationary, that is, the water pipe and the washing tub are relatively rotated, and therefore, it is difficult to seal the gap between the water pipe and the hole, and water in the washing tub flows out along the gap between the water pipe and the hole during the rotation of the washing tub; the second disadvantage is that the laundry in the washing tub collides with the water pipe, so that the laundry and the water pipe are easily damaged.

Therefore, there is a need in the art for a new drum washing machine to solve the above problems.

Disclosure of Invention

In order to solve the above problems in the prior art, that is, to solve the problem of inconvenient cleaning of the existing drum washing machine, the present invention provides a drum washing machine, which comprises a box body, and the drum washing machine further comprises: a fixing device disposed within the case; a washing drum rotatably disposed in the fixing device, the washing drum for containing articles to be washed and washing water; a water inlet and outlet device communicated with the washing drum so as to supply water into the washing drum or discharge the water in the washing drum; the water inlet and drainage device comprises a first water inlet and drainage assembly, an adapter and a second water inlet and drainage assembly which are sequentially communicated, the first water inlet and drainage assembly is communicated with the washing cylinder, the second water inlet and drainage assembly is communicated with the outside, the adapter is installed on the fixing device, and the first water inlet and drainage assembly and the part of the adapter connected with the first water inlet and drainage assembly can rotate along with the washing cylinder.

In a preferred technical solution of the above drum washing machine, a plurality of water passing structures are provided along a circumferential direction of the washing drum, the first water inlet and drain assembly includes a plurality of first water pipes, a first end of each first water pipe is communicated with the corresponding water passing structure, and a second end of each first water pipe is communicated with the adaptor.

In a preferred embodiment of the above drum washing machine, the water passage structure is a water passage opening formed at a boundary between the rear wall of the washing tub and the inner tub wall.

In the preferred technical scheme of the drum washing machine, the first water inlet and outlet assembly further comprises a water collecting part, one end of the water collecting part is provided with a plurality of water distributing openings, the other end of the water collecting part is provided with a centralized opening, the water distributing openings are communicated with the centralized opening, the second end of the first water pipe is communicated with the corresponding water distributing openings, and the centralized opening is communicated with the adaptor.

In the preferable technical scheme of the drum washing machine, the first water inlet and outlet assembly further comprises a connecting pipe, one end of the connecting pipe is communicated with the concentration port, and the other end of the connecting pipe is communicated with the adaptor.

In a preferred technical solution of the above drum washing machine, the washing drum has a rotating shaft, and the fixing device is provided with a supporting structure, and the rotating shaft is rotatably connected with the supporting structure.

In the preferable technical scheme of the drum washing machine, a channel is arranged in the rotating shaft, the supporting structure is of a cylindrical structure, the adapter is installed on the cylindrical structure, the water collecting piece is installed on the rotating shaft, and the connecting pipe is located in the channel and the cylindrical structure.

In a preferred embodiment of the drum washing machine, the inner diameter of the passage is larger than the outer diameter of the cylindrical structure.

In a preferred embodiment of the drum washing machine, a laundry input port is formed at a first end of the washing drum, and the first water inlet and drain assembly is communicated with a second end of the washing drum.

In the preferable technical scheme of the drum washing machine, the adaptor is a rotary tee joint, the rotary tee joint comprises a rotary port and two fixed ports, the second water inlet and drainage component comprises a water inlet pipe and a water outlet pipe, the rotary port is communicated with the first water inlet component, one of the two fixed ports is communicated with the water inlet pipe, and the other of the two fixed ports is communicated with the water outlet pipe.

As can be understood by those skilled in the art, in the preferred technical scheme of the present invention, the drum washing machine has no outer tub, and only one washing tub for accommodating the articles to be washed and the washing water, so that it is very convenient to wash only the inside of the washing tub; in addition, the water inlet and drainage device comprises a first water inlet and drainage assembly, an adapter and a second water inlet and drainage assembly which are sequentially communicated, the first water inlet and drainage assembly is communicated with the washing cylinder, the second water inlet and drainage assembly is communicated with the outside, the adapter is arranged on the fixing device, the first water inlet and drainage assembly and the part of the adapter connected with the first water inlet and drainage assembly can rotate along with the washing cylinder, through the arrangement, when the washing drum rotates, the first water inlet and drain assembly can synchronously rotate along with the washing drum, so that only one water through hole is formed in the washing drum, the first water inlet and drain assembly is communicated with the water through hole, compared with the washing machine disclosed in the patent with publication number CN206266888U, the first water inlet and outlet assembly of the washing machine of the present invention does not need to extend into the interior of the washing tub, therefore, water leakage is avoided, and the clothes in the washing drum and the first water inlet and outlet assembly are not collided.

Further, be provided with a plurality of structures of leading to water along the circumference of washing a section of thick bamboo, first water intaking and drainage subassembly includes first water pipe and water collecting part, and the quantity of first water pipe is a plurality of, and water collecting part's one end is provided with the distributive opening, and the other end is provided with concentrated mouth, and the quantity of distributive opening also is a plurality of, the first end and the logical water structure intercommunication that correspond of first water pipe, the second end and the distributive opening intercommunication that corresponds of first water pipe. Through such setting, when the drainage, can be through a plurality of first water pipes simultaneous drainage, likewise, when intaking, can intake simultaneously through a plurality of first water pipes, can greatly promote washing machine's the drainage ability of intaking, reduce the washing time.

Further, the water passing structure is a water passing opening formed at the junction of the rear wall of the washing drum and the inner drum wall. Through such an arrangement, the water in the washing drum is facilitated to be discharged.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

FIG. 1 is a first schematic structural diagram of a drum washing machine according to the present invention;

FIG. 2 is a second schematic structural view of the drum washing machine of the present invention;

FIG. 3 is a third schematic structural view of the drum washing machine of the present invention;

FIG. 4 is a schematic structural view of a fixing device of the drum washing machine according to the present invention;

fig. 5 is a schematic structural view of a washing tub of the drum washing machine of the present invention;

FIG. 6 is an assembly view of a first water pipe and a water collecting member of the drum washing machine according to the present invention;

FIG. 7 is a schematic structural view of a water collecting member of the drum washing machine according to the present invention;

FIG. 8 is an assembly view of the spindle, the tubular structure and the adaptor of the drum washing machine of the present invention;

fig. 9 is a structural schematic view of a coupling member of the drum washing machine of the present invention;

FIG. 10 is a first schematic view of the assembly of the washing tub and the electromagnetic device of the drum washing machine of the present invention;

fig. 11 is a second schematic view of the assembly of the washing tub and the electromagnetic device of the drum washing machine of the present invention.

List of reference numerals:

1. a box body; 2. a washing drum; 21. a barrel; 22. a rotating shaft; 23. a connecting member; 24. a bearing; 211. a laundry input port; 212. a water through hole; 213. a water collecting ring; 214. a water guide groove; 215. an annular neck; 216. a limiting structure; 221. a channel; 231. a cylindrical body; 232. a connecting arm; 2321. a strip; 2322. a reinforcement; 31. a motor; 32. a belt; 33. a belt pulley; 41. a suspension spring; 42. a damper; 51. a main frame; 52. a roller; 511. a tubular structure; 512. a cross beam; 513. an upper containment zone; 514. a lower containment zone; 61. a first water pipe; 62. a water collection member; 63. a connecting pipe; 64. rotating the tee; 65. a water inlet pipe; 66. a drain pipe; 67. draining pump; 621. a water diversion port; 641. a rotation port; 642. a fixed port; 71. communicating the chambers; 72. an accommodating chamber; 73. a spherical structure; 81. an iron member; 82. an electromagnetic member; 83. a steel cord.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the following embodiments are merely illustrative of the technical principles of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 3, wherein fig. 1 is a first structural schematic view of a drum washing machine according to the present invention; FIG. 2 is a second schematic structural view of the drum washing machine of the present invention; fig. 3 is a third schematic structural view of the drum washing machine of the present invention.

As shown in fig. 1 to 3, the drum washing machine of the present invention includes a cabinet 1, and a fixing device, a washing tub 2, a driving device, a water inlet and outlet device, and a vibration damping device are provided in the cabinet 1.

With continued reference to fig. 1 to 3, the washing tub 2 is used for containing articles to be washed and washing water, and a laundry input opening 211 is formed at a front end (a left end of the washing tub 2 as viewed in fig. 1) of the washing tub 2, through which a user can input laundry to be washed into the washing tub 2, and can take out the washed laundry from the washing tub 2 through the laundry input opening 211.

With continued reference to fig. 1 to 3, the washing drum 2 is rotatably disposed in the fixing device, the driving device is drivingly connected to the rear end (the right end of the washing drum 2 as viewed in fig. 1) of the washing drum 2, and the driving device can drive the washing drum 2 to rotate when the washing machine is in operation. Wherein, the rear end of the washing drum 2 has a rotating shaft 22, the washing drum 2 is rotatably connected with the fixing device through the rotating shaft 22, exemplarily, the driving device comprises a motor 31, a belt 32 and a belt pulley 33, wherein the belt pulley 33 is fixedly connected with the rotating shaft 22, one end of the belt 32 is connected with an output shaft of the motor 31, a small belt pulley is generally installed on the output shaft of the motor 31, one end of the belt 32 is connected with the small belt pulley, the other end of the belt 32 is connected with the belt pulley 33 installed on the rotating shaft 22, and the motor 31 drives the belt pulley 33 and the rotating shaft 22 to rotate through the belt 32.

It should be noted that the driving device is not limited to the specific example described above, for example, a direct drive motor may be used for driving, a stator device of the direct drive motor may be mounted on the fixing device, and a rotor of the direct drive motor may be mounted on the rotating shaft 22, and such modifications and changes to the specific structural form of the driving device should be limited within the protection scope of the present invention without departing from the principle and scope of the present invention.

With continued reference to fig. 1 to 3, the water inlet and outlet means, through which water can be supplied into the washing tub 2 or water in the washing tub 2 can be discharged, communicates with the rear end of the washing tub 2.

Referring to fig. 1 to 3, the vibration damping device is disposed between the fixing device and the cabinet 1, and damps vibration by the vibration damping device to reduce vibration noise of the washing machine. The vibration damping device comprises a hanging spring 41 and a damper 42, the top of the fixing device is fixedly connected with the box body 1 through the hanging spring 41, and the bottom of the fixing device is fixedly connected with the box body 1 through the damper 42.

With continuing reference to fig. 1-3 and with continuing reference to fig. 4, fig. 4 is a schematic structural diagram of the fixing device of the drum washing machine of the present invention.

As shown in fig. 1 to 4, the fixing device includes a main frame 51, the washing tub 2 is rotatably disposed in the main frame 51, and the rotation shaft 22 is rotatably connected to a rear end (a right end of the main frame 51 as viewed in fig. 1) of the main frame 51. By mounting the washing tub 2 in the main frame 51, a part of the washing tub 2 can be extended to the outside of the main frame 51 (as shown in fig. 2 and 3), and thus the size of the washing tub 2 can be enlarged as much as possible, and the washing capacity of the washing machine can be increased without changing the outer shape.

With continued reference to fig. 4, a support structure is provided at the rear end of the main frame 51, and the shaft 22 is rotatably connected to the support structure. Wherein the support structure is a cylindrical structure 511. The rotation shaft 22 may be inserted into the cylindrical structure 511 and coupled by a bearing so that the rotation shaft 22 may rotate relative to the cylindrical structure 511.

With continued reference to fig. 2 and 4, the fixing device further comprises a plurality of rollers 52 arranged on the main frame 51, the plurality of rollers 52 abutting against the outer wall of the washing tub 2 in the mounted condition. Exemplarily, the main frame 51 includes 4 cross beams 512 arranged along the axial direction of the washing drum 2, one roller 52 is installed on each cross beam 512, and the roller 52 is disposed near the front end of the main frame 51, and the roller 52 is disposed to support the front end of the washing drum 2, so that the pressure of the rear end of the washing drum 2 on the rotating shaft 22 can be greatly reduced, thereby not only reducing the design difficulty and the processing cost of the rotating shaft 22, but also prolonging the service life of the rotating shaft 22.

With continued reference to fig. 4, the main frame 51 includes two accommodating sections, which are vertically disposed, denoted as an upper accommodating section 513 and a lower accommodating section 514, wherein the washing drum 2 is located in the upper accommodating section 513.

Referring to fig. 5, fig. 5 is a schematic structural view of a washing tub of a drum washing machine according to the present invention.

As shown in fig. 5, a water passing structure is formed at the rear end of the washing tub 2, and the water inlet and outlet means communicates with the water passing structure, so that water can be supplied into the washing tub 2 or water in the washing tub 2 can be discharged through the water passing structure. Preferably, the water passing structure is a water passing port 212 formed at a boundary of the rear wall and the inner wall of the washing tub 2. The water opening 212 is provided at the boundary between the rear wall and the inner cylindrical wall, which is more advantageous for discharging the water in the washing tub 2.

With continued reference to fig. 5, a water collecting ring 213 is formed on the inner wall of the washing tub 2, and the water collecting ring 213 is communicated with the water inlet 212. As can be seen from the figure, the water collecting ring 213 is a circular groove-shaped structure protruding outward from the inner wall of the washing drum 2 along the radial direction of the washing drum 2, so that the bottom of the water collecting ring 213 is lower than the inner wall of the washing drum 2, and thus, the water in the washing drum 2 is collected to the water collecting ring 213, which is beneficial to discharging the water in the washing drum 2.

Continuing to refer to fig. 5, a plurality of water guiding structures are further disposed on the inner wall of the washing drum 2, the water guiding structures extend along the axial direction of the washing drum 2, and the rear end (the right end of the water guiding structure viewed from fig. 5) of the water guiding structures is communicated with the water collecting ring 213. The water guide structure is arranged on the inner wall of the washing drum 2, so that water in the washing drum 2 can be favorably collected to the water collecting ring 213, and particularly when the washing drum 2 rotates, for example, when the washing machine executes a dehydration program, the water on the inner wall can be directly and quickly collected to the water collecting ring 213 along the water guide structure without being blocked by clothes, so that the dehydration capability of the washing machine can be greatly improved.

With continued reference to fig. 5, the water directing structure is a water directing groove 214 formed in the inner cylindrical wall. That is, the water guide structure is a strip-shaped groove-shaped structure which is arranged on the inner wall of the washing drum 2 and protrudes outwards along the radial direction of the washing drum 2. Of course, a plurality of inwardly convex strip-shaped convex ribs can be formed on the inner wall of the washing drum 2 along the radial direction of the washing drum 2, so that a water guide structure can be formed between two adjacent strip-shaped convex ribs. Preferably, a mode that the water guide grooves 214 are combined with the strip-shaped ribs can be adopted, and the two structures are arranged at intervals, so that the drainage efficiency can be further improved.

With continued reference to fig. 5, it can be seen that some water guiding grooves 214 have longer lengths, some water guiding grooves 214 have shorter lengths, and two water guiding grooves 214 with different lengths are arranged at intervals, that is, the lengths of two adjacent water guiding grooves 214 are different. Because the rear ends of the water guiding grooves 214 are all required to be communicated with the water collecting ring 213, the length of the water guiding grooves 214 with longer lengths extending to the front end of the washing drum 2 is greater than the length of the water guiding grooves 214 with shorter lengths extending to the front end of the washing drum 2, and the washing drum 2 is divided into a front section, a middle section and a rear section along the axial direction of the washing drum 2, as can be seen from fig. 5, the water guiding grooves 214 located at the front section of the washing drum 2 are relatively sparse, and the water guiding grooves 214 located at the middle section and the rear section of the washing drum 2 are relatively dense, so that the processing cost is reduced as much as possible on the basis of ensuring that the drainage requirement of the washing machine is met through the water guiding grooves 214 with different lengths.

With continued reference to fig. 5, the inner diameter of the front end of the tub 2 is smaller than the inner diameter of the rear end of the tub 2. With this arrangement, the water in the washing tub 2 can be more easily flowed to the water passage opening 212.

Continuing to refer to fig. 5, the washing drum 2 has a drum door (not shown), and the front end of the washing drum 2 is provided with a fixing structure protruding outwards, and the drum door (not shown) is mounted on the fixing structure. Wherein, the fixed structure is a ring-shaped clamping groove 215 formed on the washing drum 2, and the drum door is clamped and fixed with the ring-shaped clamping groove 215.

With continuing reference to fig. 1 to 5 and with continuing reference to fig. 6 to 8, fig. 6 is a schematic view illustrating an assembly of the first water pipe and the water collecting member of the drum washing machine according to the present invention; FIG. 7 is a schematic structural view of a water collecting member of the drum washing machine according to the present invention; fig. 8 is an assembly view of the rotating shaft, the cylindrical structure and the adaptor of the drum washing machine of the present invention.

As shown in fig. 1, 3, 6 and 8, the water inlet and drain device includes a first water inlet and drain assembly, an adaptor and a second water inlet and drain assembly which are sequentially communicated, wherein the first water inlet and drain assembly is communicated with the water passing port 212 formed at the rear end of the washing cylinder 2, that is, the first water inlet and drain assembly does not need to extend into the washing cylinder 2, the second water inlet and drain assembly is communicated with the outside, and the adaptor is mounted on a cylindrical structure 511 arranged at the rear end of the fixing device.

When the washing cylinder 2 rotates, the first water inlet and drainage assembly and the part of the adaptor connected with the first water inlet and drainage assembly can rotate along with the washing cylinder 2, and the second water inlet and drainage assembly and the part of the adaptor connected with the second water inlet and drainage assembly are fixed.

That is, the water inlet and drain device comprises three core structures, namely a first water inlet and drain assembly communicated with the washing cylinder 2, a second water inlet and drain assembly communicated with the outside, and an adapter for connecting the first water inlet and drain assembly and the second water inlet and drain assembly, and the key of the three core structures lies in that the adapter, specifically, the adapter itself comprises two parts, the first part is connected with the first water inlet and drain assembly, the second part is connected with the second water inlet and drain assembly, the two parts of the adapter can rotate relatively, and the second part is arranged on the fixing device, so that when the washing cylinder 2 rotates, the first water inlet and drain assembly and the first part of the adapter can rotate together with the washing cylinder 2, and the second water inlet and drain assembly is communicated with the outside and needs to be fixed.

With continued reference to fig. 1, 3 and 8, the adaptor is preferably configured as a rotary tee 64, the rotary tee 64 includes two rotary ports 641 and two fixed ports 642, wherein the rotary ports 641 are communicated with the first water inlet and outlet assembly and can rotate along with the first water inlet and outlet assembly, the second water inlet and outlet assembly includes a water inlet pipe 65 and a water outlet pipe 66, one of the two fixed ports 642 is a water inlet and is communicated with the water inlet pipe 65, the other end of the water inlet pipe 65 is connected with an external water supply source, the other fixed port 642 is a water outlet and is communicated with the water outlet pipe 66, and the other end of the water outlet pipe 66 is connected with the drain pump 67.

With continued reference to fig. 5 to 8, the first water inlet and outlet assembly includes a first water pipe 61, a water collecting member 62 and a connecting pipe 63 which are sequentially communicated, wherein the number of the first water pipes 61 may be multiple. Illustratively, the number of the first water pipes 61 is three, and accordingly, the number of the water through openings is also 3, the three water through openings 212 are arranged along the circumferential direction of the washing drum 2, the first end of the first water pipe 61 is communicated with the corresponding water through opening 212, one end of the water collecting member 62 is provided with three water dividing openings 621, the number of the water dividing openings 621 is three, the second end of the first water pipe 61 is communicated with the corresponding water dividing opening 621, the other end of the water collecting member 62 is provided with a concentration opening (not shown), the plurality of water dividing openings 621 are all communicated with the concentration opening, and the concentration opening of the water collecting member 62 is communicated with the rotation opening 641 of the rotary tee 64 through the connecting pipe 63. Thus, the three first water pipes 61 are communicated with the swivel tee 64 through the water collecting member 62 and the connecting pipe 63.

The three first water pipes 61 are communicated through the water collecting piece 62, water can be discharged simultaneously through the three first water pipes 61 during water discharging, and similarly, water can be fed simultaneously through the three first water pipes 61 during water feeding.

It should be noted that in practical applications, a person skilled in the art can omit the connecting pipe 63 to directly connect the water collecting member 62 to the three-way rotating member 64, and such flexible adjustment and change can be made without departing from the principle and scope of the present invention, and should be limited within the protection scope of the present invention.

With continued reference to fig. 8, a passage 221 is provided in the rotating shaft 22, and the first water inlet and outlet assembly is communicated with the rotating tee 64 through the passage 221 and the cylindrical structure 511. Wherein, the inner diameter of the channel 221 can be larger than the outer diameter of the cylindrical structure 511, in this case, when installing, the cylindrical structure 511 is inserted into the channel 221 of the rotating shaft 22; conversely, the inner diameter of the cylindrical structure 511 may be larger than the outer diameter of the rotating shaft 22, and in this case, the rotating shaft 22 may be inserted into the cylindrical structure 511. Preferably, the inner diameter of the passage 221 is larger than the outer diameter of the cylindrical structure 511, and when the cylindrical structure 511 is installed, the cylindrical structure 511 is inserted into the passage 221 of the rotating shaft 22, and the two are connected by the bearing 24, so that the two can rotate relatively.

With continuing reference to fig. 5 and 8 and with subsequent reference to fig. 9, fig. 9 is a schematic structural view of the connecting member of the drum washing machine according to the present invention.

As shown in fig. 5, 8 and 9, the washing drum 2 includes a drum body 21, a rotating shaft 22 and a connecting member 23, wherein the drum body 21 is used for accommodating articles to be washed and washing water, a laundry input port 211, a water passing port 212, a water collecting ring 213, a water guide groove 214 and a ring-shaped clamping groove 215 are formed on the drum body 21, one end of the connecting member 23 is connected with the rear end (the right end of the drum body 21 as viewed in fig. 5) of the drum body 21, and the other end of the connecting member 23 is connected with the rotating shaft 22. That is to say, the rotating shaft 22 is fixedly connected with the cylinder 21 through the connecting member 23, the driving device drives the rotating shaft 22 to rotate, and the rotating shaft 22 drives the cylinder 21 to synchronously rotate through the connecting member 23.

The connecting member 23 includes a cylindrical body 231 and connecting arms 232 connected with each other, wherein the number of the connecting arms 232 is plural, illustratively, the number of the connecting arms 232 is three, three connecting arms 232 are arranged along the circumferential direction of the cylindrical body 231, preferably, evenly arranged along the circumferential direction of the cylindrical body 231, the connecting arms 232 and the cylindrical body 231 can be fixedly connected or can be integrally provided, when mounting, the rotating shaft 22 can be inserted into the cylindrical body 231, and the two can adopt interference fit or clearance fit, if a clearance fit is used, the shaft 22 and the cylindrical body 231 may be secured circumferentially by a key, illustratively, a first key groove is formed on the inner wall of the cylindrical body 231, a second key groove is formed on the outer wall of the rotating shaft 22, the first key groove and the second key groove are circumferentially fixed by a key, of course, the rotating shaft 22 and the cylindrical body 231 are preferably in an interference fit to improve the connection stability of the two.

With continued reference to fig. 5, 8 and 9, in the installed state, the connecting arm 232 is fixedly connected with the rear end of the cylinder 21, the rotating shaft 22 is fixedly connected with the cylindrical body 231 of the connecting member 23, and a certain gap is provided between the end of the rotating shaft 22 and the rear end of the cylinder 21, through which the second end of the first water pipe 61 can enter the channel 221 of the rotating shaft 22.

Specifically, when the water collecting member 62 is mounted, the water collecting member 62 may be fixed to the cylindrical body 231 of the connecting member 23, the water collecting member 62 may be positioned in the gap between the rotating shaft 22 and the cylindrical body 21, the water dividing port 621 of the water collecting member 62 may be directed toward the cylindrical body 21, and the concentration port of the water collecting member 62 may be directed toward the passage 221 of the rotating shaft 22, so that the second end of the first water pipe 61 may be directly communicated with the corresponding water dividing port 621, the connecting pipe 63 may be positioned inside the passage 221 and the cylindrical structure 511, the concentration port of the water collecting member 62 may be communicated with the left end of the connecting pipe 63, the rotating tee 64 may be fixed to the cylindrical structure 511, the rotating port 641 of the rotating tee 64 may be inserted into the cylindrical structure 511, the right end of the connecting pipe 63 may be communicated with the rotating port 641, and the connecting pipe 63, the water collecting member 62, and the first water pipe 61 may be rotated synchronously with the cylindrical body 21. Of course, it is also possible to fixedly connect the water collecting member 62 to the rotation shaft 22 and to install the water collecting member 62 in the passage 221 of the rotation shaft 22.

The three first water pipes 61 may be supplied with water or drained at the same time. In order to prevent air leakage during water drainage, the washing tub 2 can be kept in a rotating state, and washing water is distributed along the water collecting ring 213 under the action of centripetal force, so that all three water passing openings 212 are immersed in the water, thereby improving the water drainage capability of the washing machine and reducing the washing time.

Continuing to refer to fig. 9, the three connecting arms 232 are identical in structure, taking one of the three connecting arms as an example, each connecting arm 232 includes two bars 2321 and a reinforcement 2322, wherein the number of the bars 2321 is two, the two bars 2321 are arranged in a gap, and the bars 2321 are fixedly connected with or integrally arranged with the cylindrical body 231; the number of the reinforcing members 2322 is plural, for example, the number of the reinforcing members 2322 is two, and both ends of the reinforcing members 2322 are respectively fixedly connected with the two bar members 2321 or integrally disposed. In the mounted state, the first water pipe 61 may be positioned in the gap between the two bars 2321, and the first water pipe 61 and the reinforcing member 2322 are fixedly connected, so that the first water pipe 61 can be prevented from being moved.

Preferably, the drum washing machine of the present invention further comprises an air leakage preventing means for maintaining the water passage opening 212 in a communication state with the corresponding first water pipe 61 when the washing tub 2 is in a rotating state, and for maintaining the water passage opening 212 not immersed in water in a blocking state with the corresponding first water pipe 61 when the washing tub 2 is in a stationary state.

When the washing machine is in a rotating state, for example, when the washing machine performs a dehydration process, the air leakage preventing device can maintain the water passing ports 212 in a communication state with the corresponding first water pipes 61, that is, the three water passing ports 212 and the corresponding first water pipes 61 in a communication state, so that the three first water pipes 61 can simultaneously discharge water, thereby improving the drainage capacity of the washing machine.

In the case where the washing machine is in a stationary state, for example, between the execution of a washing process and a rinsing process, it is necessary to discharge water from the washing tub 2, and at this time, all the water in the washing tub 2 is located at the lower portion of the washing tub 2, only the water passage ports 212 located at the bottom portion of the three water passage ports 212 are immersed in water, and the other two water passage ports 212 are located at the upper portion and are not immersed in water, the air leakage preventing device can keep the two water passage ports 212 located at the upper portion (i.e., the water passage ports 212 not immersed in water) and the corresponding first water pipes 61 in a disconnected state, and thus, after the drainage pump 67 is started, the air leakage of the two first water pipes 61 can be prevented, thereby ensuring the smooth execution of the drainage process.

The air leakage preventing means may be three solenoid valves respectively disposed at the corresponding water passage ports 212, and when the washing machine is in a rotating state, the three solenoid valves are all in an on state to maintain the water passage ports 212 in a communicating state with the corresponding first water pipes 61, and when the washing machine is in a stationary state, the solenoid valves at the water passage ports 212 not immersed in water may be closed to maintain the water passage ports 212 in an off state with the corresponding first water pipes 61.

Of course, the air leakage preventing device may be configured in other structures, and a preferred embodiment of the air leakage preventing device will be described in detail with reference to fig. 5.

As shown in fig. 5, the air leakage preventing device includes a plurality of air leakage preventing units, and illustratively, the air leakage preventing device includes three air leakage preventing units, and the three air leakage preventing units may have the same structure or different structures, and of course, it is preferable that the three air leakage preventing units are provided with the same structure.

The air leakage prevention unit comprises two air leakage prevention members which are matched with each other, the two air leakage prevention members are recorded as a first air leakage prevention member and a second air leakage prevention member, a cavity is formed in the first air leakage prevention member, the second air leakage prevention member is located in the cavity, the top end of the cavity is communicated with the first water pipe 61, the middle position close to the cavity is communicated with the water through opening 212, the section of the cavity is recorded as a communication cavity 71 and used for communicating the first water pipe 61 and the water through opening 212, the cavity located at one end below the communication cavity 71 is recorded as an accommodating cavity 72, the second air leakage prevention member is generally located in the accommodating cavity 72, the second air leakage prevention member is of a spherical structure 73, and the outer diameter of the spherical structure 73 is larger than the inner diameter of the first water pipe 61 and smaller than the inner diameter of the communication cavity 71.

When the washing tub 2 is rotated, the spherical structure 73 is always positioned in the accommodating chamber 72 by the centrifugal force, and in this case, the water passage ports 212 are in communication with the corresponding communication chamber 71 and the first water pipe 61.

When the washing drum 2 stops rotating, two air leakage prevention units are positioned at the upper part, and one air leakage prevention unit is positioned at the bottom end.

The spherical structure 73 of the air leakage prevention unit at the bottom end is positioned in the accommodating chamber 72 under the action of self gravity, and the water through port 212 at the bottom end (the water through port 212 is immersed in water) and the corresponding communication chamber 71 and the first water pipe 61 are kept in a communication state, so that water can be drained.

The spherical structure 73 of the upper air leakage preventing unit moves toward the first water pipe 61 by its own weight, and the first water pipe 61 can be sealed because the outer diameter of the spherical structure 73 is larger than the inner diameter of the first water pipe 61, and particularly, after the drain pump 67 is started, the spherical structure 73 can more tightly seal the first water pipe 61 under the suction force of the drain pump 67 to prevent the first water pipe 61 from air leakage. Of course, the outer diameter of the spherical structure 73 may be larger than the inner diameter of the communication chamber 71, so that the spherical structure 73 can directly seal the communication chamber 71, that is, indirectly seal the first water pipe 61, and also prevent the first water pipe 61 from leaking air.

It should be noted that the air leakage preventing means may include only two air leakage preventing units, one of the three water openings 212 is mainly two, the air leakage preventing unit is not provided at the main water opening 212, the air leakage preventing unit is provided only at the other two water openings 212, when the washing tub 2 stops rotating, the main water opening 212 is positioned at the bottom to drain water, and the other two water openings 212 are sealed by the air leakage preventing unit.

In another preferred embodiment, the second leakage preventing member is also a spherical structure 73, but the communication chamber 71 is provided as a tapered chamber, that is, the inner diameter of the communication chamber 71 is gradually increased from one end to the other end, the end with a smaller inner diameter is referred to as a first end, the end with a larger inner diameter is referred to as a second end, the first end is communicated with the first water pipe 61, the diameter of the spherical structure 73 is larger than the inner diameter of the first end but smaller than the inner diameter of the second end, and when the spherical structure 73 moves toward the first water pipe 61, the spherical structure 73 stays at the middle position of the communication chamber 71 due to the gradually decreased inner diameter of the communication chamber 71, indirectly sealing the first water pipe 61.

In another preferred embodiment, the second air leakage prevention member is configured as a frustum structure, that is, the outer diameter of the second air leakage prevention member gradually increases from one end to the other end, the end with a small outer diameter is referred to as a first end, the end with a large outer diameter is referred to as a second end, the first end faces the first water pipe 61, the outer diameter of the first end is smaller than the inner diameter of the first water pipe 61, the outer diameter of the second end is larger than the inner diameter of the first water pipe 61, when the frustum structure moves towards the first water pipe 61, the first end extends into the first water pipe 61, and the second end stays outside the first water pipe 61, so that the first water pipe 61 is sealed.

In another preferred embodiment, the second air leakage preventing member is further configured to be a frustum structure, an outer diameter of the second air leakage preventing member gradually increases from one end to the other end, the end with a small outer diameter is referred to as a first end, the end with a large outer diameter is referred to as a second end, the first end faces the first water pipe 61, the outer diameter of the first end is smaller than the inner diameter of the communication chamber 71, the outer diameter of the second end is larger than the inner diameter of the communication chamber 71, when the frustum structure moves towards the first water pipe 61, the first end extends into the communication chamber 71, the second end stays outside the communication chamber 71, the communication chamber 71 is sealed, and the first water pipe 61 is indirectly sealed.

Referring to fig. 10 and 11, fig. 10 is a first schematic view illustrating an assembly of a washing tub and an electromagnetic device of the drum washing machine of the present invention; fig. 11 is a second schematic view of the assembly of the washing tub and the electromagnetic device of the drum washing machine of the present invention.

As shown in fig. 10 and 11, the drum washing machine of the present invention further includes an electromagnetic device including an iron member 81 and an electromagnetic member 82, wherein the iron member 81 is disposed on the washing drum 2, the iron member 81 can be fastened to the washing drum 2 by a wire rope 83, the electromagnetic member 82 is disposed on the fixing device, and the iron member 81 and the electromagnetic member 82 cooperate with each other to stop the washing drum 2 from rotating and stopping at a set position.

In the process of the rotation of the washing drum 2, the electromagnetic member 82 is in a power-off state, when the washing drum 2 needs to be stopped, the electromagnetic member 82 is powered on, and an attractive force is generated between the electromagnetic member 82 and the iron member 81, the attractive force is a resistance relative to the washing drum 2, and the washing drum 2 stops rotating slowly and finally stops under the action of the resistance of the attractive force.

Further, the washing tub 2 can be stopped at a predetermined position by the electromagnetic device, for example, the iron member 81 is disposed at a position corresponding to the water passage opening 212, the electromagnetic member 82 is disposed directly below the washing tub 2, and the water passage opening 212 corresponding to the iron member 81 is positioned at the lowermost portion when the washing tub 2 stops rotating, thereby facilitating drainage.

That is, the electromagnetic device can play both a braking function and a positioning function. The electromagnetic member 82 is fixed in the lower receiving area 514 (see fig. 4) of the main frame 51, that is, the electromagnetic member 82 and the washing drum 2 are both mounted on the main frame 51, so that the distance between the iron member 81 mounted on the washing drum 2 and the electromagnetic member 82 is relatively fixed, which is beneficial to improving the stability of the electromagnetic device.

With continued reference to fig. 11, the surfaces corresponding to the iron member 81 and the electromagnetic member 82 are both provided as arc-shaped surfaces, and by such an arrangement, the positioning accuracy of the electromagnetic device can be improved. The iron component 81 also sets up to the arcwall face towards the one side of washing a tub 2, and the outer cylinder wall looks adaptation of arcwall face and washing a tub 2, so, can improve the iron component 81 and wash a tub 2 be connected the steadiness. An anti-slip member, such as a rubber pad, may be further disposed between the iron member 81 and the washing tub 2 to prevent the iron member 81 and the washing tub 2 from moving relatively.

With continued reference to fig. 10 and 11, the washing drum 2 is provided with a limiting structure 216, and the limiting structure 216 can prevent the iron member 81 from moving toward the front end of the washing drum 2. The washing cylinder 2 is frustum-shaped, the front end of the washing cylinder is small in size, and the iron member 81 can be prevented from sliding towards the front end of the washing cylinder 2 by arranging the limiting structure 216. Wherein, the limiting structure 216 is a convex structure formed on the washing drum 2.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A drum washing machine, comprising a cabinet, characterized in that it further comprises:

a fixing device disposed within the case;

a washing drum rotatably disposed in the fixing device, the washing drum for containing articles to be washed and washing water;

a water inlet and outlet device communicated with the washing drum so as to supply water into the washing drum or discharge the water in the washing drum;

the water inlet and drainage device comprises a first water inlet and drainage assembly, an adapter and a second water inlet and drainage assembly which are sequentially communicated, the first water inlet and drainage assembly is communicated with the washing cylinder, the second water inlet and drainage assembly is communicated with the outside, the adapter is installed on the fixing device, and the first water inlet and drainage assembly and the part of the adapter connected with the first water inlet and drainage assembly can rotate along with the washing cylinder.

2. A drum washing machine according to claim 1, characterized in that a plurality of water passing structures are provided along the circumferential direction of the washing drum, the first water inlet and outlet assembly comprises a plurality of first water pipes, the first ends of the first water pipes are communicated with the corresponding water passing structures, and the second ends of the first water pipes are communicated with the adaptor.

3. A drum washing machine according to claim 2, characterized in that the water passing structure is a water passing port formed at a boundary of the rear wall and the inner drum wall of the washing drum.

4. A drum washing machine according to claim 2, characterized in that the first water inlet and outlet assembly further comprises a water collecting member, one end of the water collecting member is provided with a plurality of water dividing ports, the other end of the water collecting member is provided with a concentration port, the water dividing ports are all communicated with the concentration port, the second end of the first water pipe is communicated with the corresponding water dividing port, and the concentration port is communicated with the adapter.

5. A drum washing machine according to claim 4, characterized in that the first water inlet and outlet assembly further comprises a connecting pipe, one end of the connecting pipe is communicated with the concentration port, and the other end of the connecting pipe is communicated with the adaptor.

6. A drum washing machine as claimed in claim 5 wherein the washing drum has a rotating shaft, and the fixing device is provided with a support structure, and the rotating shaft is rotatably connected with the support structure.

7. A drum washing machine according to claim 6, characterized in that a channel is arranged in the rotating shaft, the supporting structure is a cylindrical structure, the adapter is mounted on the cylindrical structure, the water collecting member is mounted on the rotating shaft, and the connecting pipe is positioned in the channel and the cylindrical structure.

8. A drum washing machine according to claim 7, characterized in that the inner diameter of the passage is larger than the outer diameter of the cylindrical structure.

9. A drum washing machine according to claim 1, characterized in that the laundry input opening is formed at a first end of the washing drum, and the first water inlet and outlet assembly is communicated with a second end of the washing drum.

10. A drum washing machine according to any one of claims 1 to 9 characterized in that the adaptor is a swivel tee comprising a swivel port and two fixed ports, the second water intake and drainage assembly comprises a water inlet pipe and a water outlet pipe, the swivel port is in communication with the first water intake assembly, one of the two fixed ports is in communication with the water inlet pipe, and the other of the two fixed ports is in communication with the water outlet pipe.

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