CN109322108B

CN109322108B - Drum washing machine

Info

Publication number: CN109322108B
Application number: CN201811290381.6A
Authority: CN
Inventors: 林光芳; 卢松; 刘祥宽
Original assignee: Wuxi Little Swan Electric Co Ltd
Current assignee: Wuxi Little Swan Electric Co Ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2024-04-26
Anticipated expiration: 2038-10-31
Also published as: CN109322108A

Abstract

The invention discloses a drum washing machine, which comprises an outer drum; an inner cylinder rotatably arranged in the outer barrel; the stirrer is rotatably arranged in the inner cylinder; the main shaft is in transmission connection with the stirrer through a transmission device, and the transmission device transmits the torque of the main shaft to the stirrer; the inner barrel comprises an inner barrel body with two open axial ends and an inner barrel rear cover arranged at the rear end of the inner barrel body, a through hole is formed in the middle of the inner barrel rear cover, the stirrer is rotatably arranged at the through hole, and the front projection of the stirrer on the plane where the through hole is formed covers the through hole. According to the roller washing machine provided by the embodiment of the invention, various washing modes can be realized, and the roller washing machine has the advantages of stable performance, long service life and the like.

Description

Drum washing machine

Technical Field

The invention relates to the technical field of clothes treatment equipment, in particular to a drum washing machine.

Background

When the drum washing machine washes clothes, the inner drum rotates to drive the clothes and water in the inner drum to rotate to wash the clothes, wherein the clothes are lifted and put down by virtue of the baffle plate in the inner drum, and the clothes are beaten through the inner peripheral surface of the inner drum. However, because the washing mode is single, the rear cover of the drum body of the drum washing machine is generally a round stamping forming part, and can not well drive the clothes and water in the drum to rotate, thereby influencing the washing effect.

For this reason, a drum washing machine having a pulsator disposed in an inner tub has been proposed in the related art.

PCT/CN2016/11037, for example, discloses a drum type washing machine in which a pulsator is directly driven to rotate by a motor, and simultaneously the motor drives an inner drum to rotate by transmission of a planetary gear mechanism, so that the rotation speed of the inner drum is lower than that of the pulsator. However, since the inner cylinder itself is larger in volume than the pulsator, and the inner cylinder needs to carry clothes and water during washing, the load of the planetary gear mechanism is large, and the power transmission effect of the planetary gear mechanism and the service life of the planetary gear mechanism are affected.

As further WO2015188683A1 discloses a drum washing machine comprising an outer tub, a drum arranged in the outer tub, a rotating body arranged at the rear of the drum, and a driving part for rotating the drum and the rotating body, wherein the rotating body is independent of the inner tub, has a large axial thickness and occupies a large space. Thus, there is a need for improvement.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a drum washing machine capable of realizing various washing modes, and having advantages of stable performance, long service life, and the like.

According to an embodiment of the present invention, a drum washing machine includes: an outer tub; the inner barrel is rotatably arranged in the outer barrel; the stirrer is rotatably arranged in the inner cylinder; the driver is connected with the inner cylinder through a main shaft, the main shaft transmits the torque of the driver to the inner cylinder, the main shaft is in transmission connection with the stirrer through a transmission device, and the transmission device transmits the torque of the main shaft to the stirrer; the inner cylinder comprises an inner cylinder body with two open axial ends and an inner cylinder rear cover arranged at the rear end of the inner cylinder body, a through hole is formed in the middle of the inner cylinder rear cover, the stirrer is rotatably arranged at the through hole, and the stirrer covers the through hole in the orthographic projection of the plane where the through hole is located.

According to the drum washing machine provided by the embodiment of the invention, the driver is arranged, the driver is used for driving the main shaft to rotate so as to drive the inner drum to rotate, the stirrer is further arranged in the inner drum, and the torque of the main shaft is transmitted to the stirrer by the transmission device so as to drive the stirrer to rotate, so that the rotation of the stirrer and the rotation of the inner drum can be combined into various washing modes, for example, any one of the stirrer and the inner drum is independently rotated or the stirrer and the inner drum are simultaneously rotated, and for example, the stirrer and the inner drum are rotated in the same direction or in opposite directions, so that the washing modes of the drum washing machine are diversified.

In addition, the inner cylinder rear cover of the drum washing machine in the related art is an integral stamping round forming piece with a columnar side plate on the surface, compared with the inner cylinder rear cover structure in the related art, the middle position of the inner cylinder rear cover is provided with the through hole, so that the stirrer is covered at the through hole, the axial thickness of the stirrer is reduced, the supporting strength is ensured, the structural compactness and the stability of the drum washing machine can be ensured, the phenomenon that sundries such as coins are blocked into a gap between the peripheral wall of the stirrer and the inner side wall of the through hole to influence the rotation of the stirrer in the washing process can be avoided, the normal operation of the drum washing machine is ensured, and the washing effect and the user experience of clothes are improved.

According to one embodiment of the invention, the periphery of the through hole is provided with an inner convex ring extending along the periphery of the through hole, the periphery of the stirrer is provided with an outer convex ring extending along the periphery of the stirrer, and the outer convex ring is sleeved outside the inner convex ring.

According to one embodiment of the invention, the inner barrel rear cover is formed into a ring shape, the inner ring of the inner barrel rear cover is provided with a groove extending along the circumference thereof, the outer circumference of the stirrer is provided with a flanging extending along the circumference thereof, and the flanging is movably matched with the groove.

According to one embodiment of the invention, one side of the inner cylinder rear cover facing the inner cylinder inner cavity is provided with a plurality of rear cover bulges surrounding the through hole, and the rear cover bulges are arranged at intervals along the circumferential direction of the through hole.

According to one embodiment of the invention, one side of the stirrer facing the inner cavity of the inner cylinder is provided with a plurality of stirring ribs which are arranged at intervals along the circumferential direction of the through hole.

According to one embodiment of the invention, the inner barrel rear cover is an integral piece, and the stirrer is an integral piece.

According to an embodiment of the present invention, the drum washing machine further includes: the inner cylinder support is arranged at the rear end of the inner cylinder body and is positioned between the inner cylinder rear cover and the rear wall of the outer cylinder, and the main shaft is connected with the inner cylinder through the inner cylinder support and is rotatably supported on the rear wall of the outer cylinder.

According to one embodiment of the invention, the transmission means is a planetary gear unit in driving connection with the main shaft and the agitator, respectively.

In some examples, the planetary gear portion is switchable between a first state and a second state; when the planetary gear unit is in the first state, the planetary gear unit transmits the torque of the main shaft to the stirrer in the same direction so as to enable the stirrer and the inner cylinder to rotate in the same direction; when the planetary gear unit is in the second state, the planetary gear unit reversely transmits the torque of the main shaft to the stirrer so as to reversely rotate the stirrer and the inner cylinder.

In some examples, the planetary gear assembly includes a planetary gear assembly and the planetary gear assembly includes: a planet carrier; a plurality of planetary gears rotatably mounted to the planetary carriers and engaged with the main shafts, respectively; the planetary gear outer gear shell is sleeved outside a plurality of planetary gears and meshed with the planetary gears respectively, and is in transmission connection with the stirrer; wherein the planetary gear unit is in the first state when the carrier is allowed to freely rotate, and the planetary gear unit is in the second state when the carrier is braked.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

Fig. 1 is a schematic view of a drum washing machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of an inner tub of a drum washing machine, before assembly, with an inner tub bracket;

FIG. 3 is a schematic view of an inner tub of a drum washing machine, an inner tub bracket, and a pulsator, before assembly;

FIG. 4 is a schematic view of the structure of the inner tub rear cover and the pulsator of the drum washing machine before assembly;

FIG. 5 is a schematic structural view of an inner tub bracket of a drum washing machine;

FIG. 6 is a schematic view of a spindle, spindle sleeve, and spindle flange of a drum washing machine prior to assembly;

FIG. 7 is an assembly view of a mounting base and a partial seal of a drum washing machine;

FIG. 8 is an exploded view of the structure shown in FIG. 7;

FIG. 9 is an exploded view of a planetary gear unit of a drum washing machine;

FIG. 10 is an exploded view of a planetary gear assembly of the drum washing machine;

FIG. 11 is an exploded view of the planet carrier shown in FIG. 10 prior to assembly with a planet gear;

FIG. 12 is a schematic view of an assembly of the planet carrier and the planet gears shown in FIG. 10;

Fig. 13 is a partial structural rear view of a drum washing machine according to an embodiment of the present invention;

FIG. 14 is a schematic structural view of the brake shown in FIG. 13;

FIG. 15 is an exploded schematic view of the brake shown in FIG. 13;

FIG. 16 is a schematic structural view of the brake lever shown in FIG. 13;

FIG. 17 is a cross-sectional view taken along line A-A of FIG. 16;

FIG. 18 is a schematic view of the drum washing machine, from the front to the rear, with the housing, inner tub and agitator removed;

FIG. 19 is an enlarged view of the portion I shown in FIG. 18;

FIG. 20 is a schematic view of the drum washing machine, from the rear to the front, with the housing, inner tub and agitator removed;

FIG. 21 is an enlarged view at II shown in FIG. 20;

FIG. 22 is a cross-sectional view taken along B-B in FIG. 20;

FIG. 23 is a schematic view showing a drum washing machine according to another embodiment of the present invention, with a casing and an inner tub removed, from a front to rear;

FIG. 24 is a cross-sectional view taken along line C-C of FIG. 23;

Fig. 25 is a schematic structural view of another clutch of the drum washing machine.

Reference numerals:

drum washing the machine 100 is configured to perform a series of operations,

An outer barrel 1, a mounting hole 11, a main shaft bearing seat 12,

The inner cylinder 2 is provided with a plurality of grooves,

The inner cylinder bracket 201, the central shaft 2011, the frame 2012, the connecting arm 20121, the positioning boss 20122, the web 20123, the lightening hole 20124, the shaft hole 2013,

An inner cylinder body 21,

The inner barrel rear cover 22, the through opening 221, the inner convex ring 222, the groove 223, the rear cover bulge 224,

An inner cylinder front cover 23,

Spindle 31, cavity 311, pulley 312, belt 3121, lock nut 313, spindle bearing 314, spindle flange 315, spindle sleeve 316,

The second shaft 32, the water supply channel 320, the second shaft bearing 3211, the second shaft end bearing 3212, the brake disc 322, the adapter 323, the adapter bearing 3231, the adapter seal 3232, the wear ring 324, the shaft seal 325,

The stirrer 4, the water spraying hole 41, the water collecting cavity 42, the water diversion channel 43, the stirring convex rib 44, the convex ring 45,

The motor 5, the motor shaft 51,

The planetary gear part is provided with a gear 6,

Planetary gear assembly 61, planetary wheel carrier 611, planetary wheel carrier 6111, mounting boss 6112, positioning post 6113, planetary wheel mounting seat 6114, planetary wheel fixed shaft 6115, planetary wheel fixed disk 6116, positioning hole 6117, limiting hole 6118, planetary gear 612, planetary wheel external gear housing 613, flange 6131,

The mounting base 62, the transverse annular mating surface 6201, the longitudinal annular mating surface 6202, the clamping groove 621, the through hole 622, the base body 6231, the annular stop collar 62311, the wear sleeve 6232,

The planet wheel bearing 63,

The partial seal 641, the annular body portion 6411, the first transverse sealing lip 6412, the longitudinal sealing lip 6413, the second transverse sealing lip 6414,

The braking means (7) are provided with a braking means,

Chute seat 71, chute 711, stop 712, circumferential positioning chute 713, support chute 714, via 715,

A brake lever 72, a stopper 720, a slide engaging portion 721, an axial reinforcing rib 7211, a driving portion 722, a bridge portion 723, a lateral reinforcing rib 7231, a longitudinal reinforcing rib 7232, a brake portion 724, a linear chute 725, a first driving chute 7261, a second driving chute 7262, a first stopper groove 7263, a second stopper groove 7264, a shift lever 727, a driving lever 728, a brake pressure spring 729,

A brake actuator 73, a brake cam 74, an eccentric column 741, a brake bracket 75, a limit chute 751,

A brake pawl 76, a pawl tooth 761, a first pawl portion 762, a first pivot hole 7621, a first drive post 7622, a second pawl portion 763, a second pivot hole 7631, and a second drive post 7632.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

A drum washing machine 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 24.

As shown in fig. 1 to 24, a drum washing machine 100 according to an embodiment of the present invention includes an outer tub 1, an inner tub 2, a pulsator 4, a driver (a motor 5 described below), and a planetary gear unit 6.

The inner cylinder 2 is rotatably provided in the outer cylinder 1. The agitator 4 is rotatably provided in the inner cylinder 2. The driver is in driving connection with the inner cylinder 2 through a main shaft 31, and the main shaft 31 transmits the torque of the driver to the inner cylinder 2. The planetary gear unit 6 is in transmission connection with the main shaft 31 and the agitator 4, respectively, and when the driver drives the main shaft 31 to rotate, the planetary gear unit 6 can transmit the torque of the main shaft 31 to the agitator 4, thereby driving the agitator 4 to rotate.

According to the drum washing machine 100 of the embodiment of the present invention, by providing the driver, by driving the rotation of the main shaft 31 by the driver to rotate the inner tub 2, and further providing the pulsator 4 in the inner tub 2, and transmitting the torque of the main shaft 31 to the pulsator 4 by the planetary gear unit 6 to drive the pulsator 4 to rotate, thereby, the rotation of the pulsator 4 and the rotation of the inner tub 2 may be combined with each other into various washing modes, for example, any one of the pulsator 4 and the inner tub 2 is rotated alone or the pulsator 4 and the inner tub 2 are rotated simultaneously, for example, the pulsator 4 and the inner tub 2 are rotated in the same direction or in opposite directions, thereby diversifying the washing modes of the drum washing machine 100.

In addition, the driver drives the inner cylinder 2 through the main shaft 31 to directly drive the components with larger load by using the driver, the number of stages of power transmission is smaller, and power transmission is more direct, so that the inner cylinder with larger driving volume and needing to contain clothes and water is stably driven, the planetary gear part 6 is arranged between the main shaft 31 and the stirrer 4, the torque of the main shaft 31 is transmitted to the stirrer by using the planetary gear part 6, the stirrer 4 is indirectly driven by using the driver, and the load at the stirrer 4 is far smaller than the load at the inner cylinder 2, so that compared with the drum washing machine with a pulsator (stirrer) in the related art, the load acting on the planetary gear part 6 is greatly reduced, the stable transmission of power is facilitated to improve the performance stability of the drum washing machine 100, the risk of damaging the planetary gear part 6 is greatly reduced, and the service life of the drum washing machine 100 is prolonged.

Therefore, the drum washing machine 100 according to the embodiment of the invention can realize various washing modes, and has the advantages of stable performance, long service life and the like.

The planetary gear unit 6 of the drum washing machine 100 according to the embodiment of the present invention is switchable between a first state and a second state.

When the planetary gear unit 6 is in the first state, the planetary gear unit 6 transmits the torque of the main shaft 31 to the stirrer 4 in the same direction, and the stirrer 4 and the inner tube 2 are rotated in the same direction. When the planetary gear unit 6 is in the second state, the planetary gear unit 6 reversely transmits the torque of the main shaft 31 to the agitator 4, and thereby the agitator 4 and the inner cylinder 2 reversely rotate. For example, if the driver drives the main shaft 31 to rotate clockwise, when the planetary gear unit 6 is in the first state, the planetary gear unit 6 transmits the torque of the main shaft 31 to the pulsator 4 in the same direction, thereby rotating both the pulsator 4 and the inner tube 2 clockwise. When the planetary gear unit 6 is in the second state, the planetary gear unit 6 reversely transmits the torque of the main shaft 31 to the pulsator 4, thereby rotating the pulsator 4 counterclockwise.

For example, when the drum washing machine 100 is in the dehydration mode, the planetary gear unit 6 can be switched to the first state, and the agitator 4 and the inner drum 2 are driven to rotate in the same direction by the power transmission mode of the planetary gear unit 6 in the first state, so that the clothes are not wound, torn or the like during high-speed spin-drying.

When the drum washing machine 100 is in the washing mode, the planetary gear unit 6 can be switched to the second state, and the agitator 4 and the inner drum 2 are driven to reversely rotate by the power transmission mode of the planetary gear unit 6 in the second state, so that clothes and water are fully agitated, and the washing effect of clothes washing is improved.

It will be appreciated by those skilled in the art that the combination of the switching of the state of the planetary gear unit 6 and the mode in which the drum washing machine 100 is currently located is not limited to the above-described embodiment, and that the first state and the second state of the planetary gear unit 6 may be combined in either one of the spinning and washing modes.

Therefore, the rotation direction of the stirrer 4 can be adjusted by arranging the planetary gear part 6 which can be switched between the first state and the second state, so that the stirrer 4 and the inner cylinder 2 rotate in the same direction and in opposite directions, and the working modes suitable for different working conditions are formed by matching with the inner cylinder 2.

In some examples, the rotational speed of the agitator 4 is less than the rotational speed of the inner barrel 2 when the agitator 4 is counter-rotating with the inner barrel 2. That is, when the planetary gear unit 6 is in the second state, the variable speed transmission of power is realized. Therefore, when the clothes and the water are fully stirred, the clothes are prevented from being wound, and the stability and the noise of the whole machine are facilitated.

In some examples, the rotational speed of the agitator 4 is equal to the rotational speed of the inner barrel 2 when the agitator 4 rotates in the same direction as the inner barrel 2. That is, when the planetary gear unit 6 is in the first state, the agitator 4 rotates in synchronization (at the same speed and in the same direction) with the inner cylinder 2.

As shown in fig. 9 to 12, the planetary gear unit 6 includes a planetary gear assembly 61 and the planetary gear assembly 61 includes: a planet carrier 611, a plurality of planet gears 612, and a planet gear outer housing 613.

A plurality of planetary gears 612 are rotatably mounted on the planetary carrier 611, respectively, and the outer peripheral wall of the main shaft 31 has engagement teeth, and the plurality of planetary gears 612 are engaged with the engagement teeth on the main shaft 31, respectively. The planetary gear outer gear housing 613 is sleeved outside the plurality of planetary gears 612, and the planetary gear outer gear housing 613 is respectively meshed with the plurality of planetary gears 612, and the planetary gear outer gear housing 613 is in transmission connection with the stirrer 4.

It will be appreciated that the inner peripheral wall of the planet gear outer housing 613 has meshing teeth that mesh with the plurality of planet gears 612. The main shaft 31, the plurality of planet gears 612, the planet carrier 611 and the planet gear outer gear housing 613 thus form a planetary gear train, and the shaft section of the main shaft 31, which meshes with the plurality of planet gears 612, forms the sun gear of the planetary gear train.

Wherein the planetary gear unit 6 is in the first state when the planetary wheel carrier 611 is allowed to freely rotate, thereby rotating the pulsator 4 in the same direction as the inner tube 2; when the planetary gear carrier 611 is braked, the planetary gear unit 6 is in the second state, and the plurality of planetary gears 612 rotate on their own axes, so that the planetary gear outer gear housing 613 rotates in the opposite direction to the main shaft 31, and the agitator 4 rotates in the opposite direction to the inner cylinder 2. Thus, the operation state of the pulsator 4 can be controlled by switching the state of the planetary carrier 611 of the planetary gear unit 6, thereby realizing the switching of the various operation modes of the drum washing machine 100.

Thus, according to the drum washing machine 100 of the embodiment of the present invention, by providing the planetary gear unit 6 between the main shaft 31 and the pulsator 4, torque of the main shaft 31 is transmitted to the pulsator 4 by the planetary gear unit 6 to drive the pulsator 4 to rotate, whereby rotation of the pulsator 4 and rotation of the inner tub 2 can be combined with each other into various washing methods, for example, either one of the pulsator 4 and the inner tub 2 is rotated alone or the pulsator 4 and the inner tub 2 are rotated simultaneously, and for example, the pulsator 4 and the inner tub 2 are rotated in the same direction or in opposite directions, thereby diversifying the washing methods of the drum washing machine 100.

In addition, the torque of the main shaft 31 is transmitted to the stirrer by the planetary gear unit 6, and the stirrer 4 can be indirectly driven by the driver, so that compared with the drum washing machine with the impeller in the related art, the load applied to the planetary gear unit 6 is greatly reduced, the stable transmission of power is facilitated, the performance stability of the drum washing machine 100 is improved, the damage risk of the planetary gear unit 6 is greatly reduced, and the service life of the drum washing machine 100 is prolonged.

Referring to fig. 10 to 12, the planetary carrier 611 includes: a planet carrier 6111 and a planet-wheel fixed disc 6116. The plurality of planetary gears 612 are rotatably installed on one side surface of the planetary gear support 6111, a plurality of installation bosses 6112 are arranged on one side surface of the planetary gear support 6111, and the planetary gear fixing disc 6116 is installed on the plurality of installation bosses 6112, so that the connection between the planetary gear support 6111 and the planetary gear fixing disc 6116 is facilitated.

In some examples, the planet carrier 6111 and the planet-wheel-fixing disk 6116 are both located within the planet-wheel outer gear housing 613, the planet-wheel carrier 6111 and the planet-wheel-fixing disk 6116 respectively stop both sides of the inner teeth of the planet-wheel outer gear housing 613, thereby being positioned in the axial direction of the planet-wheel outer gear housing 613 by means of the inner tooth ends of the planet-wheel outer gear housing 613. The planet wheel support 6111 can position and install a plurality of planet gears 612, and the combined structure of the planet wheel support 6111 and the planet wheel fixed disc 6116 can limit a plurality of planet wheels between the planet wheel support 6111 and the planet wheel fixed disc 6116, so that the modularized assembly of the structure is realized, the structure is more compact, and the assembly is more convenient.

In some examples, the planet-wheel securing disc 6116 is disposed within the planet-wheel outer gear housing 613 and is secured to the planet-wheel carrier 6111 by fasteners, with a secure connection.

In some examples, a side of the planet carrier 6111 is provided with a plurality of planet mounting seats 6114, each planet mounting seat 6114 is provided with a planet fixing shaft 6115, and the plurality of planet gears 612 are respectively rotatably and correspondingly mounted on the plurality of planet fixing shafts 6115. The term "one-to-one correspondence" is understood to mean that the number of planet gears 612 is equal to the number of planet wheel mounts 6114, one planet gear 612 being provided for each planet wheel mount 6114.

In some specific examples, a jack is provided on the planet mounting seat 6114, one end of the planet fixing shaft 6115 is inserted into the jack of the planet mounting seat 6114, and the other end of the planet fixing shaft 6115 is placed in a limit hole 6118 of the planet fixing disc 6116 and fixed on the planet fixing disc 6116 through welding, so that the positioning and mounting of the planet gear 612 are performed.

In some examples, one side of the planet carrier 6111 is provided with a plurality of mounting bosses 6112 and a plurality of planet mount seats 6114, the plurality of mounting bosses 6112 and the plurality of planet mount seats 6114 being alternately arranged along the circumference of the planet carrier 6111, such that the plurality of mounting bosses 6112 and the plurality of planet gears 612 are alternately arranged along the circumference of the planet carrier 6111.

Further, positioning columns 6113 are arranged on each mounting boss 6112, a plurality of positioning holes 6117 are arranged on the planet wheel fixing disc 6116, and the positioning columns 6113 on the plurality of mounting bosses 6112 are correspondingly matched in the plurality of positioning holes 6117 one by one, so that the planet wheel fixing disc 6116 is supported on the plurality of mounting bosses 6112, and therefore the assembly of the planet wheel fixing disc 6116 and the planet wheel support 6111 is realized, and the connection is convenient.

As shown in fig. 9 and 10, according to a further embodiment of the present invention, the planetary gear unit 6 further includes: a mounting base 62, and a planetary gear assembly 61 is provided in the mounting base 62, thereby realizing a modular design of the planetary gear unit 6. The planetary gear outer gear housing 613 is in driving connection with the agitator 4 through the mounting base 62, for example, the mounting base 62 and the agitator 4 may be combined by screws, and the planetary gear outer gear housing 613, the mounting base 62 and the agitator 4 are fixedly connected to achieve synchronous operation, so that torque of the main shaft 31 is conveniently transferred to the agitator 4 through the planetary gear unit 6.

In some examples, a flange 6131 is provided on one of the inner peripheral wall of the mounting base 62 and the outer peripheral wall of the planetary gear outer gear housing 613, and a clamping groove 621 is provided on the other of the inner peripheral wall of the mounting base 62 and the outer peripheral wall of the planetary gear outer gear housing 613, and the flange 6131 is fitted in the clamping groove 621, ensuring a fixed connection of the mounting base 62 and the planetary gear outer gear housing 613.

In some alternative examples, the outer peripheral wall of the planetary outer gear housing 613 is provided with a plurality of flanges 6131, each flange 6131 extending in the axial direction of the planetary outer gear housing 613, the plurality of flanges 6131 being spaced apart along the circumference of the planetary outer gear housing 613.

Correspondingly, the inner peripheral wall of the mounting base 62 is provided with a plurality of clamping grooves 621, each clamping groove 621 extends along the axial direction of the mounting base 62, the plurality of clamping grooves 621 are arranged along the circumferential direction of the mounting base 62 at intervals, and the plurality of flanges 6131 are correspondingly matched in the plurality of clamping grooves 621 one by one, so that the connection between the planet gear outer gear housing 613 and the mounting base 62 can be realized, the circumferential positioning between the planet gear outer gear housing 613 and the mounting base 62 can be ensured, and the synchronous operation between the planet gear outer gear housing 613 and the mounting base 62 can be realized.

It is to be understood that the positions of the plurality of flanges 6131 and the plurality of clamping grooves 621 may be interchanged, for example, the plurality of flanges 6131 are all provided on the inner peripheral wall of the mounting base 62, the plurality of clamping grooves 621 are all provided on the outer peripheral wall of the planet gear outer gear housing 613, or a part of the plurality of flanges 6131 may be provided on the outer peripheral wall of the planet gear outer gear housing 613, another part may be provided on the inner peripheral wall of the mounting base 62, and the plurality of clamping grooves 621 also correspond to the outer peripheral wall of the planet gear outer gear housing 613 and the inner peripheral wall of the mounting base 62, respectively, so that the connection is convenient.

As shown in fig. 9, in combination with fig. 1, 22 and 24, according to a further embodiment of the present invention, the planetary gear unit 6 further includes: the planetary gear bearing 63, the planetary gear bearing 63 is located in the installation base 62 and is located the outside of planetary gear assembly 61, the inner race cover of planetary gear bearing 63 is located main shaft 31 and along with main shaft 31 rotation, the outer lane of planetary gear bearing 63 links to each other with installation base 62 and along with installation base 62 rotation, through setting up planetary gear bearing 63, can guarantee that installation base 62 is rotatory for main shaft 31.

According to one embodiment of the present invention, the drum washing machine 100 further includes: a second shaft 32 and a brake 7, the second shaft 32 being engaged with the carrier 611, the brake 7 controlling whether the carrier 611 is braked by the second shaft 32.

In some examples, the side peripheral wall of the second shaft 32 is provided with splines, i.e. the second shaft 32 forms a spline shaft, the planet carrier 611 is provided with spline grooves which are matched with the splines of the second shaft 32, and the second shaft 32 and the planet carrier 611 are fixedly connected through the matching of the splines and the spline grooves, so that the synchronous operation of the second shaft 32 and the planet carrier 611 is ensured.

When the brake 7 brakes the second shaft 32, the carrier 611 cannot rotate due to being braked; when the brake 7 is disengaged from the second shaft 32, the carrier 611 is in a free state. Therefore, by providing the brake 7, the operation state of the second shaft 32 can be switched, so that the planetary gear unit 6 is switched between the first state and the second state, and the rotation direction of the stirrer 4 can be adjusted by the planetary gear unit 6 switched between the first state and the second state, so that the stirrer 4 and the inner cylinder 2 rotate in the same direction and in opposite directions, and thus an operation mode suitable for different working conditions can be formed in cooperation with the inner cylinder 2.

In some examples, the spindle 31 has a cavity 311 formed therethrough in an axial direction thereof, and the second shaft 32 extends through the cavity 311. For example, the central axis of the main shaft 31 is parallel to and coincides with the central axis of the second shaft 32, and the main shaft 31 is rotatable relative to the second shaft 32, thereby driving the inner drum 2 and the agitator 4 to rotate, respectively, and ensuring the normal operation of the drum washing machine 100.

In some alternative examples, the second shaft 32 is supported by a second shaft bearing 3211 that is sleeved over and within the cavity 311. Specifically, at least two second shaft bearings 3211 are provided in the cavity 311 of the main shaft 31, and the second shaft 32 passes through the at least two second shaft bearings 3211 to be supported in the cavity 311 of the main shaft 31 and rotatable with respect to the main shaft 31.

In some examples, the mounting base 62 is provided with a through hole 622, the second shaft 32 is threaded through the through hole 622, and the second shaft 32 is supported by a second shaft end bearing 3212 that is sleeved over and within the through hole 622. Thus, one end of the mounting base 62 is supported on the second shaft 32 through the second shaft end bearing 3212, and the other end of the mounting base 62 is supported on the main shaft 31 through the planetary gear bearing 63, so that positioning and mounting of the planetary gear unit 6 are realized, and rotation of the mounting base 62 relative to the second shaft 32 and the main shaft 31 can be ensured.

As shown in fig. 13 to 22, in some examples, a brake disc 322 is drivingly connected to the second shaft 32, and when the brake 7 is engaged with the brake disc 322, the second shaft 32 is braked, thereby effecting braking of the carrier 611; when the brake 7 is disengaged from the brake disc 322, the second shaft 32 and the carrier 611 are in a free state.

Further, referring to fig. 14 to 17, the brake 7 includes: chute seat 71, brake lever 72 and brake actuator 73. The chute seat 71 is provided with a slide 711, the brake lever 72 is slidably engaged with the slide 711 between an extended position, in which the brake lever 72 is engaged with the brake disc 322, and a retracted position, in which the brake lever 72 is disengaged from the brake disc 322, and a brake actuator 73 is mounted to the chute seat 71 and is in driving connection with the brake lever 72, the brake actuator 73 driving the brake lever 72 between the extended and retracted positions. Thus, the brake lever 72 is driven to move along the slide 711 by the brake actuator 73, so that the engagement and disengagement between the brake lever 72 and the brake disc 322 are realized, and the switching is convenient.

According to the brake 7 for the drum washing machine of the embodiment of the present invention, the brake lever 72 is driven to move between the extended position and the retracted position by the brake driver 73, the brake lever 72 is engaged with or disengaged from the brake disc 322 on the second shaft 32 of the drum washing machine 100, the second shaft 32 is switched between the free state and the braked state, and the torque of the main shaft 31 is further transmitted to the pulsator 4 through the planetary gear unit 6 to drive the pulsator 4 to rotate, whereby the rotation of the pulsator 4 and the rotation of the inner tub 2 can be combined with each other into a plurality of washing manners, and the washing manners of the drum washing machine 100 are diversified.

Further, the number of components of the brake 7 is small, and the structure is simpler. The brake lever 72 is driven to move by the brake driver 73, the brake lever 72 is engaged with the brake disc 322 when in the extending position so as to switch the second shaft 32 to the braking state, and is disengaged from the brake disc 322 when in the retracting position so as to switch the second shaft 32 to the free state, so that compared with the drum washing machine with the pulsator in the related art, the brake lever 72 directly acts on the brake disc 322 on the second shaft 32, the control is more convenient, the transmission structure between the brake lever 72 and the second shaft 32 is less, the power transmission is more direct, the running state of the second shaft 32 can be stably switched, and the stable transmission of power is facilitated so as to improve the performance stability of the drum washing machine 100.

Therefore, the brake 7 for the drum washing machine according to the embodiment of the invention can realize the mode switching of the cooperative work of the stirrer 4 and the inner drum 2, and has the advantages of simple structure, convenient control, stability and the like.

In some specific examples, the brake lever 72 is provided with a limiting block 720, the slide 711 is internally provided with a limiting table 712, and the limiting table 712 is arranged in the slide 711 to be matched with the limiting block 720 on the brake lever 72, so that the moving path of the brake lever 72 is limited, that is, the brake lever 72 can be axially limited, the brake lever 72 is prevented from sliding out of the slide 711 to be separated from the slide groove seat 71, and the operation reliability of the brake 7 is further ensured.

In some specific examples, a circumferential positioning chute 713 is provided within the slideway 711, and the stopper 720 is slidably engaged with the circumferential positioning chute 713. Through setting up circumference location spout 713 in slide 711, when making brake lever 72 remove along slide 711, stopper 720 removes in circumference location spout 713, and circumference location spout 713 can carry out circumference location to brake lever 72, realizes preventing changeing the effect.

As shown in fig. 16 and 17, in some examples, the brake lever 72 includes: slide engagement portion 721, transmission portion 722, bridge portion 723 and brake portion 724.

The slide engaging portion 721 is slidably engaged with the slide 711, the driving portion 722 is connected to one end of the slide engaging portion 721 and the bridge portion 723 is connected to the other end of the slide engaging portion 721, that is, both ends of the slide engaging portion 721 are connected to the driving portion 722 and the bridge portion 723, respectively, the braking portion 724 is connected to one end of the bridge portion 723 away from the slide engaging portion 721, the driving portion 722 is drivingly connected to the brake actuator 73, so that the brake lever 72 is driven to move by the actuator, the braking portion 724 is engaged with the brake disc 322 when the brake lever 72 is in the extended position, the braking portion 724 is disengaged from the brake disc 322 when the brake lever 72 is in the retracted position, and the brake lever 72 is simple in structure and convenient to connect with the slide seat 71 and the brake actuator 73.

In some alternative examples, the cross-section of the ramp mating portion 721 and the smallest cross-section of the ramp 711 are mutually fitting circular, and the cross-section of the bridge 723 is rectangular and has an area smaller than the cross-sectional area of the ramp mating portion 721.

That is, the cross-sectional area of the bridge 723 is smaller than the minimum cross-sectional area of the slide 711, so that the fitting area of the brake lever 72 with the inner wall surface of the slide 711 can be reduced, thereby reducing the friction of the brake lever 72 with the sliding inner wall surface and further reducing the moving resistance of the brake lever 72.

In some alternative examples, the bridge 723 is provided with a plurality of transverse reinforcing ribs 7231 and a plurality of longitudinal reinforcing ribs 7232, each transverse reinforcing rib 7231 extending in the width direction of the bridge 723 and the plurality of transverse reinforcing ribs 7231 being disposed at intervals in the length direction of the bridge 723, each longitudinal reinforcing rib 7232 extending in the length direction of the bridge 723 and the plurality of longitudinal reinforcing ribs 7232 being disposed at intervals in the width direction of the bridge 723, each longitudinal reinforcing rib 7232 being connected to the plurality of transverse reinforcing ribs 7231, respectively. By providing the plurality of transverse reinforcing ribs 7231 and the plurality of longitudinal reinforcing ribs 7232 on the bridge 723, the structural strength of the bridge 723 is improved, the use reliability of the brake 7 is ensured, and the service life of the brake 7 is further prolonged.

In some specific examples, the slide engaging portion 721 is provided with a plurality of axial reinforcing ribs 7211, each axial reinforcing rib 7211 extends along the axial direction of the slide engaging portion 721 and the plurality of axial reinforcing ribs 7211 are disposed at intervals along the circumferential direction of the slide engaging portion 721, thereby improving the structural strength of the slide engaging portion and further ensuring the use reliability of the brake 7.

As shown in fig. 14, in some examples, a support chute 714 is provided within the slide 711, and the driving portion 722 is slidably supported in the support chute 714.

In some specific examples, at least two supporting ribs protruding from the inner surface of the sliding track 711 are disposed in the sliding track 711, each supporting rib extends along the length direction of the sliding track 711, a supporting chute 714 is defined between two adjacent supporting ribs, and the transmission portion 722 is supported on the supporting ribs and is movable along the supporting chute 714. Thus, by providing the support chute 714 in the chute 711, not only the transmission portion 722 can be supported and positioned to realize the anti-rotation effect, but also the reliability of the sliding fit between the brake lever 72 and the chute seat 71 can be improved, and the normal operation of the driver can be ensured.

According to a further embodiment of the invention, the brake 7 further comprises: the brake cam 74, the driver is a motor and is in transmission connection with the brake lever 72 through the brake cam 74, and the brake cam 74 can convert the rotation motion of the motor shaft of the motor into the linear motion of the brake lever 72 in the slideway 711, so that the normal operation of the brake 7 is ensured.

In some examples, the brake cam 74 is provided with an eccentric post 741 and the brake lever 72 is provided with a linear chute 725, the eccentric post 741 slidably fitting within the linear chute 725. When the motor drives the brake cam 74 to rotate, the eccentric column 741 of the brake cam 74 rotates eccentrically, and the slide 711 limits the brake lever 72 to move linearly only along the length direction, so that when the eccentric column 741 slides in the linear slide 725, the brake lever 72 is driven to move along the length direction of the slide 711, the operation is continuous, and the use reliability is high.

Optionally, the length direction of the transmission portion 722 is perpendicular to the length directions of the bridge portion 723 and the slide engaging portion 721, and the linear chute 725 is provided on the transmission portion 722 of the brake lever 72 and extends along the length direction of the transmission portion 722, so that the length direction of the linear chute 725 is perpendicular to the linear movement direction of the brake lever 72, and the structure is simple and compact, and is convenient to engage with the brake cam 74, thereby achieving the above functions.

In some examples, the chute seat 71 is provided with a through hole 715 in communication with the chute 711, and a portion of the brake cam 74 is disposed within the through hole 715 for connection with the brake actuator 73, and another portion of the brake cam 74 extends into the chute 711 through the through hole 715 to facilitate engagement of the eccentric post 741 of the brake cam 74 with the linear chute 725 of the brake lever 72.

As shown in fig. 13, in some examples, the chute seat 71 is mounted to the rear wall of the tub 1 through a brake bracket 75, the brake disc 322 is located outside the tub 1 and mounted on an end of the second shaft 32 protruding out of the tub 1, and the brake 7 is located outside the tub 1 so as to cooperate with the brake disc 322 to realize switching of different operation modes of the drum washing machine 100.

Wherein the side peripheral wall of the brake disc 322 has locking teeth arranged along its circumference, the brake lever 72 of the brake 7 is slidable between an extended position, in which the brake lever 72 is stopped between two adjacent locking teeth of the brake disc 322, and a retracted position, in which the brake lever 72 is disengaged from the brake disc 322.

In some specific examples, the brake bracket 75 is provided with a limit chute 751, the limit chute 751 extends along the radial direction of the brake disc 322, the portion of the brake lever 72 extending out of the chute 711 is slidably engaged with the limit chute 751, and the limit chute 751 limits the brake lever 72, so that not only can the limit chute perform a guiding function, thereby ensuring the linear movement of the brake lever 72, but also can perform a protecting function on the brake lever 72, and preventing the brake lever 72 from being broken during the movement.

According to another embodiment of the present invention, the drum washing machine 100 further includes: and a detecting device (not shown) for detecting the power of the driver, when the detecting device detects that the power of the driver reaches a preset value, the brake 7 controls the planetary wheel carrier 611 to be allowed to freely rotate through the second shaft 32, so that the stirrer 4 and the inner cylinder 2 rotate in the same direction, and the clothes in the inner cylinder 2 are prevented from being seriously wound to be torn, thereby the safety is high.

As shown in fig. 1 to 3 and 5, the drum washing machine 100 further includes: an inner cylinder holder 201, the inner cylinder holder 201 being mounted on the rear wall of the inner cylinder 2 and located between the rear wall of the inner cylinder 2 and the rear wall of the outer tub 1, and the main shaft 31 being rotatably connected to the inner cylinder 2 through the inner cylinder holder 201 and rotatably supported on the rear wall of the outer tub 1. That is, the main shaft 31 can directly drive the inner cylinder 2 to rotate, and simultaneously can drive the stirrer 4 to rotate through the planetary gear unit 6, so that the planetary gear unit 6 is not easy to damage.

Specifically, the inner tube 2 includes an inner tube body 21 whose both ends in the axial direction are open respectively, and an inner tube rear cover 22 provided at the rear end of the inner tube body 21, and the outer periphery of the inner tube rear cover 22 forms a flange extending in the axial direction of the inner tube body 21, and the rear end of the inner tube body 21 is connected to the flange of the inner tube rear cover 22. The inner cylinder holder 201 is fixed to the inner cylinder body 21 and the hemmed connection of the inner cylinder rear cover 22 by a connector (e.g., a screw), thereby fixing the inner cylinder 2 to the inner cylinder holder 201 so as to be rotatable with the inner cylinder holder 201 with respect to the outer cylinder 1.

In some examples, the inner cylinder bracket 201 has a central shaft 2011 and a rack 2012, the central shaft 2011 extends in the axial direction of the outer barrel 1, and the central shaft 2011 is rotatably supported on the rear wall of the outer barrel 1, the rack 2012 is connected to the side peripheral wall of the central shaft 2011, and the inner cylinder 2 is mounted on the rack 2012.

Optionally, the frame 2012 of the inner cylinder support 201 includes a plurality of (e.g., three) connecting arms distributed along the circumferential direction of the inner cylinder 2, each connecting arm extends in the radial direction of the inner cylinder 2, and the inner end of each connecting arm is connected with the side circumferential wall of the central shaft 2011, and the outer end of each connecting arm is connected with the inner cylinder 2 through a connecting piece, and by adopting a plurality of connecting arms to connect the inner cylinder 2, not only the connection reliability and stability of the inner cylinder support 201 and the inner cylinder 2 can be ensured, but also the material consumption of the inner cylinder support 201 can be reduced, and the material cost and weight can be reduced, thereby improving the cost performance of the drum washing machine 100. It will be appreciated that the frame portion 2012 may be integrally formed with the central shaft portion 2011.

In some examples, the rear wall of the outer tub 1 is provided with a mounting hole 11 and a spindle bearing housing 12 is provided in the mounting hole 11, and the spindle 31 is rotatably supported by a spindle bearing 314 provided in the spindle bearing housing 12. That is, the main shaft bearing housing 12 and the main shaft bearing 314 mounted in the main shaft bearing housing 12 are provided in the mounting hole 11 of the outer tub 1, and the main shaft 31 extends in the axial direction of the mounting hole 11 and protrudes into the mounting hole 11 and is mounted to the rear wall of the outer tub 1 through the main shaft bearing 314, whereby the main shaft 31 can rotate with respect to the outer tub 1.

Referring to fig. 4 and 5, in combination with fig. 1, 21 and 23, in some examples, the spindle 31 is sleeved with a spindle sleeve 316, the spindle sleeve 316 is sleeved with a spindle flange 315, and the inner cylinder support 201 is connected to the spindle flange 315, so that connection is convenient and reliable.

Alternatively, the spindle sleeve 316 is sleeved on the spindle 31, the spindle flange 315 is sleeved on the spindle sleeve 316, and the inner cylinder support 201 is poured on the spindle flange 315, for example, the inner cylinder support 201 may be an aluminum-poured piece, and the spindle 31, the spindle sleeve 316 and the spindle flange 315 may be integrally formed by machining, so as to be beneficial to improving the production efficiency of the drum washing machine 100.

In some examples, the planetary gear set 6 is sleeved with a set seal 641, the set seal 641 sealing the gap between the planetary gear set 6 and the spindle flange 315, thereby ensuring the connection tightness between the planetary gear set 6 and the spindle flange 315.

Further, the mounting base 62 of the planetary gear unit 6 includes a base body 6231 and a wear-resistant sleeve 6232, an annular stop ring 62311 is provided on the outer peripheral wall of the base body 6231, the wear-resistant sleeve 6232 is sleeved on the base body 6231 and one end of the wear-resistant sleeve is stopped against the annular stop ring 62311, the wear-resistant sleeve 6232 is located between the base body 6231 and the unit-mounted sealing element 641, the unit-mounted sealing element 641 is formed into an annular shape and is sleeved on the wear-resistant sleeve 6232, the inner surface of the unit-mounted sealing element 641 is in sealing connection with the wear-resistant sleeve 6232, and the outer surface of the unit-mounted sealing element 641 is respectively in sealing connection with the main shaft flange 315 and the inner cylinder support 201. By providing the wear sleeve 6232 between the partial seal 641 and the base body 6231, the wear sleeve 6232 is mated with the partial seal 641, which can ensure dimensional accuracy and improve wear resistance.

As shown in fig. 13, according to an embodiment of the present invention, the main shaft 31 is drivingly connected with a pulley 312, the driver is a motor 5, and the motor 5 drives the pulley 312 to rotate by a belt 3121 stretched over the pulley 312, i.e., the belt 3121 is wound around the motor shaft 51 and the pulley 312. By providing the pulley 312 and the belt 3121 on the main shaft 31, the transmission connection between the main shaft 31 and the driver is realized by the belt 3121, so that the impact and vibration load can be relaxed, the main shaft 31 can be operated smoothly, and the noise generated during operation is low.

In some examples, the pulley 312, belt 3121, and drive are all located outside of the outer tub 1, the pulley 312 being stopped between the rear wall of the outer tub 1 and the lock nut 313 on the main shaft 31. That is, the pulley 312 is fixedly coupled to the main shaft 31 between the rear wall of the outer tub 1 and the lock nut 313, and the positioning installation of the pulley 312 can be ensured by providing the lock nut 313 such that the driver rotates the pulley 312 through the belt 3121 and the pulley 312 rotates the main shaft 31, thereby achieving the synchronous rotation of the pulley 312 and the main shaft 31.

As shown in fig. 23 and 24, according to still another embodiment of the present invention, the pulsator 4 has a water spray hole 41, and the drum washing machine 100 further includes a water supply device (not shown) which communicates with the outer tub 1 and the pulsator 4, respectively, and supplies water in the outer tub 1 to the pulsator 4 and sprays the water into the inner tub 2 through the water spray hole 41.

In the washing process of clothes, the water supply device supplies water for the stirrer 4, and the water spraying holes 41 spray water to the clothes in the inner cylinder 2, so that the effect of soaking the clothes is achieved, the clothes soaking effect is improved, meanwhile, the stirrer 4 can stir the water in the inner cylinder 2, the washing modes are diversified, the washing effect of the clothes is improved, and the washing time is reduced.

In some alternative examples, the water supply means includes a water supply pipe having a first end and a second end, the first end of the water supply pipe being in communication with the outer tub 1, and the second end of the water supply pipe being connected to the pulsator 4, so that water in the outer tub 1 is supplied to the pulsator 4 through the water supply pipe. Here, "connection" of the second end of the water supply pipe to the pulsator 4 "is to be understood in a broad sense, and for example, the water supply pipe may or may not be physically connected to the pulsator 4, as long as water coming out of the second end of the water supply pipe can be supplied to the pulsator 4.

Therefore, the water in the inner cavity of the outer barrel 1 is supplied to the stirrer 4 through the water supply pipe, so that the effect of soaking clothes can be achieved, and the clothes soaking effect is improved. The water supply device is communicated with the inner cavity of the outer barrel 1, so that clothes can be soaked by using the washing water in the outer barrel 1, no additional water source is needed, and the water consumption is reduced. It will be appreciated that in some models where the circulation pump is not provided, the first end of the water supply pipe may also be directly connected to a water supply source for supplying water, such as an external faucet, rather than using the circulating water in the washing machine.

In some specific examples, the first end of the water supply pipe communicates with the bottom of the inner cavity of the outer tub 1. In this way, the water supply pump can pump water at the bottom of the inner cavity of the outer tub 1 to the pulsator 4, and the water supply device can ensure water supply to the pulsator 4 even in the washing mode of the drum washing machine 100 at the lowest water level, thereby ensuring the wetting effect and the washing effect of the drum washing machine 100 in different washing modes.

In some examples, the stirrer 4 has a water collection chamber 42 and a water diversion channel 43 therein, the water collection chamber 42 being in communication with the water supply device, and the water spray hole 41 being in communication with the water collection chamber 42 through the water diversion channel 43. By arranging the water collecting cavity 42 and the water diversion channel 43 in the stirrer 4, the water supply device can convey water into the water collecting cavity 42 and the water diversion channel 43, and finally water is sprayed into the inner cylinder 2 from the water spraying hole 41, so that clothes are soaked, the clothes soaking effect is improved, and the washing effect is further improved.

In some examples, the surface of the stirrer 4 facing the inside of the inner tube 2 is provided with a plurality of stirring ribs 44, each stirring rib 44 extends in the radial direction of the stirrer 4 and the plurality of stirring ribs 44 are disposed at intervals in the circumferential direction of the stirrer 4, and the water spray holes 41 are formed on the stirring ribs 44. When the clothes are washed, the water spraying holes 41 spray water towards the inner cavity of the inner cylinder 2, and the stirring ribs 44 can generate vortex flow for water in the inner cylinder 2 to drive the clothes to rotate and roll, so that the clothes washing effect is improved.

In some specific examples, the pulsator 4 is a pulsator, i.e., a pulsator is provided at the bottom of the inner tub 2 of the drum washing machine 100. In the clothes washing process, the clothes are lifted and fallen in the inner cylinder 2, and then lifted and fallen again, so that the clothes can be washed cleanly, and meanwhile, under the action of the pulsator, the drum washing machine 100 of the application further increases the rubbing action of the pulsator on the clothes on the basis of the traditional beating washing (only the inner cylinder rotates), thereby further improving the washing effect and shortening the washing time.

As shown in fig. 22 and 24, in other alternative examples, the second shaft 32 has a water supply passage 320 therein, and the water supply device supplies water in the outer tub 1 to the pulsator 4 through the water supply passage 320. By providing the water supply passage 320 in the second shaft 32, the second shaft 32 has a function of transporting water, so that the washing water in the outer tub 1 is transported into the water supply passage 320 of the second shaft 32 by the water supply means, and finally sprayed into the outer tub 1 from the water spray hole 41.

In some examples, the end of the second shaft 32 protruding from the outer tub 1 is provided with an adapter 323, and the water supply device is connected to the second shaft 32 through the adapter 323. By providing the adapter 323 at the end of the second shaft 32 extending out of the outer tub 1, the water inlet end of the water supply passage 320 is sealed, so that the water supply apparatus transports water in the outer tub 1 into the water supply passage 320.

In some specific examples, the adapter 323 is sleeved at one end of the second shaft 32 extending out of the outer barrel 1, an adapter bearing 3231 is arranged between the adapter 323 and the second shaft 32, an inner ring of the adapter bearing 3231 is fixedly connected with the second shaft 32, an outer ring of the adapter bearing 3231 is fixedly connected with the adapter 323, and the adapter bearing 3231 can be two ball bearings arranged side by side or can be a roller bearing. Thereby, a rotatable connection of the second shaft 32 with the adapter 323 is achieved by means of the adapter bearing 3231.

Advantageously, the end of the second shaft 32 protruding from the outer tub 1 is sleeved with an adapter seal 3232, the adapter seal 3232 being further away from the axial center of the second shaft 32 with respect to the adapter bearing 3231, the adapter seal 3232 sealing the gap between the second shaft 32 and the adapter 323.

Specifically, one end of the second shaft 32 extending out of the outer barrel 1 is sleeved with an adapter sealing member 3232 and an adapter bearing 3231 which are distributed along the axial direction of the second shaft 32, the adapter sealing member 3232 is located on the outer side of the adapter bearing 3231, and the adapter sealing member 3232 is respectively in sealing connection with the second shaft 32 and the adapter 323, so that the sealing connection between the adapter 323 and the outer side wall of the second shaft 32 is ensured, and water in the water supply channel 320 of the second shaft 32 is prevented from entering the cavity 311 of the main shaft 31 to affect the normal operation of other parts.

In some specific examples, the adaptor 323 is internally provided with a wear-resistant ring 324, the wear-resistant ring 324 is embedded inside the adaptor 323, one end of the second shaft 32 extending out of the outer barrel 1 extends into the wear-resistant ring 324, and the adaptor bearing 3231 and the adaptor seal 3232 are both sleeved on the second shaft 32 and are located between the outer side wall of the second shaft 32 and the wear-resistant ring 324.

That is, the wear ring 324 is located between the adapter 323 and the adapter bearing 3231 and between the adapter 323 and the adapter seal 3232. By arranging the wear-resistant ring 324 in the adapter 323, the outer ring of the adapter bearing 3231 and the adapter sealing member 3232 are matched with the wear-resistant ring 324, so that the abrasion of the adapter 323 is reduced, and the service life of the adapter 323 is prolonged.

In some examples, the second shaft 32 is sleeved with a shaft seal 325, the shaft seal 325 being disposed on the second shaft 32 and being located outside the second shaft end bearing 3212, i.e., the shaft seal 325 is further away from an axial center of the second shaft 32 relative to the second shaft end bearing 3212, the shaft seal 325 sealing a gap between the second shaft 32 and the mounting base 62, preventing water within the water supply channel 320 of the second shaft 32 from entering the cavity 311 of the main shaft 31 and the planetary gear set 6 through the gap between the second shaft 32 and the mounting base 62.

A drum washing machine 100 according to still another embodiment of the present invention will be described with reference to fig. 1 to 24.

As shown in fig. 1 to 24, a drum washing machine 100 according to an embodiment of the present invention includes an outer tub 1, an inner tub 2, a pulsator 4, and a driver. The inner cylinder 2 is rotatably provided in the outer cylinder 1. The agitator 4 is rotatably provided in the inner cylinder 2. The driver is connected with the inner cylinder 2 through a main shaft 31, the main shaft 31 transmits the torque of the driver to the inner cylinder 2, the main shaft 31 is in transmission connection with the stirrer 4 through a transmission device, and the transmission device transmits the torque of the main shaft 31 to the stirrer 4.

The inner cylinder 2 includes an inner cylinder body 21 with two open ends in the axial direction and an inner cylinder rear cover 22 arranged at the rear end of the inner cylinder body 21, a through hole 221 is formed in the middle of the inner cylinder rear cover 22, the stirrer 4 is rotatably arranged at the through hole 221, and the orthographic projection of the stirrer 4 on the plane where the through hole 221 is located covers the through hole 221. For example, the shape of the through opening 221 is circular, the outer contour shape of the stirrer 4 is also circular and the outer diameter of the stirrer 4 is slightly larger than the inner diameter of the through opening 221.

According to the drum washing machine 100 of the embodiment of the present invention, by providing the driver, driving the spindle 31 to rotate by the driver to drive the drum 2 to rotate, and further providing the pulsator 4 in the drum 2, and transmitting the torque of the spindle 31 to the pulsator 4 by the transmission device to drive the pulsator 4 to rotate, thereby, the rotation of the pulsator 4 and the rotation of the drum 2 may be combined with each other into various washing modes, for example, any one of the pulsator 4 and the drum 2 is rotated alone or the pulsator 4 and the drum 2 are rotated simultaneously, and for example, the pulsator 4 and the drum 2 are rotated in the same direction or in opposite directions, thereby diversifying the washing modes of the drum washing machine 100.

In addition, the inner cylinder rear cover of the drum washing machine in the related art is an integral stamping round forming piece with a columnar side plate on the surface, compared with the inner cylinder rear cover 22 structure in the related art, the middle position of the inner cylinder rear cover 22 is provided with the through hole 221, so that the stirrer 4 is covered at the through hole 221, the axial thickness of the stirrer 4 is reduced, the supporting strength is ensured, the structural compactness and the stability of the drum washing machine 100 are ensured, impurities such as coins and the like are prevented from being blocked into a gap between the peripheral wall of the stirrer 4 and the inner side wall of the through hole 221 in the washing process, the rotation of the stirrer 4 is prevented from being influenced, the normal operation of the drum washing machine 100 is ensured, and the washing effect and the user experience of clothes are improved.

According to one embodiment of the invention, the stirrer 4 is rotatably arranged at the through opening 221, the shape of the through opening 221 corresponding to and being identical to the outer contour shape of the stirrer 4. For example, the through hole 221 forms a circular opening, the outer contour shape of the pulsator 4 forms a circle, and the outer diameter of the pulsator 4 is slightly larger than the inner diameter of the through hole 221.

As shown in fig. 4, according to an alternative embodiment of the present invention, the periphery of the through hole 221 is provided with an inner convex ring 222 extending along the periphery thereof, the periphery of the stirrer 4 is provided with an outer convex ring 45 extending along the periphery thereof, and the outer convex ring 45 is sleeved outside the inner convex ring 222. That is, the outer collar 45 of the agitator 4 is fastened to the outer side of the inner collar 222, and the outer collar 45 is not in contact with the inner collar 222, so that the cooperation of the outer collar 45 and the inner collar 222 does not affect the rotation of the agitator 4, and a roundabout gap can be formed between the agitator 4 and the inner barrel rear cover 22, preventing foreign matters such as coins from being caught in the gap between the agitator 4 and the inner barrel rear cover 22.

According to another alternative embodiment of the invention, the inner barrel back cover 22 is formed in a ring shape, the inner ring of the inner barrel back cover 22 is provided with a groove 223 extending along the circumference thereof, the outer circumference of the stirrer 4 is provided with a flange extending along the circumference thereof, and the flange is movably matched with the groove 223. For example, as shown in fig. 4, the opening of the groove 223 is disposed forward, and the periphery of the stirrer 4 extends rearward to form a flange, which may be the outer flange 45 shown in fig. 4, so that a roundabout gap is formed between the stirrer 4 and the inner cylinder rear cover 22, and impurities such as coins are prevented from being caught in the gap between the stirrer 4 and the inner cylinder rear cover 22.

According to one embodiment of the invention, the side of the inner barrel rear cover 22 facing the inner cavity of the inner barrel 2 is provided with a plurality of rear cover protrusions 224 surrounding the through holes 221, and the plurality of rear cover protrusions 224 are arranged at intervals along the circumferential direction of the through holes 221, for example, the plurality of rear cover protrusions 224 are arranged at uniform intervals along the circumferential direction of the through holes 221. When the drum 2 rotates, the plurality of rear cover protrusions 224 agitate water, thereby improving the washing effect of the drum washing machine 100.

According to one embodiment of the invention, one side of the stirrer 4 facing the inner cavity of the inner cylinder 2 is provided with a plurality of stirring ribs 44 which are arranged at intervals along the circumferential direction of the through hole 221, and the stirring ribs 44 can generate vortex flow for water in the inner cylinder 2 to drive clothes to rotate and tumble, so that the clothes washing effect is improved.

According to one embodiment of the invention, the inner barrel rear cover 22 is an integral molding piece, and the stirrer 4 is an integral molding piece, so that the structural strength and structural stability of the inner barrel rear cover 22 and the stirrer 4 are ensured, and the inner barrel rear cover is easy to process and manufacture and convenient to mold.

According to an embodiment of the present invention, the drum washing machine 100 further includes an inner tub supporter 201, the inner tub supporter 201 being installed at the rear end of the inner tub 21 between the inner tub rear cover 22 and the rear wall of the outer tub 1, and the main shaft 31 being coupled to the inner tub 2 through the inner tub supporter 201 and rotatably supported at the rear wall of the outer tub 1. The inner cylinder holder 201 may be fixed to the inner cylinder body 21 and the hemmed connection of the inner cylinder rear cover 22 by a connecting member (e.g., a screw), thereby fixing the inner cylinder 2 to the inner cylinder holder 201 so as to be rotatable with the inner cylinder holder 201 with respect to the outer cylinder 1.

In some examples, the inner cylinder holder 201 has a central shaft 2011 and a frame 2012 connected to the outer periphery of the central shaft 2011, the central shaft 2011 being rotatably supported to the rear wall of the outer cylinder 1, and the inner cylinder 2 being mounted to the frame 2012.

Wherein the frame 2012 includes at least four connecting arms 20121 arranged at intervals along the circumferential direction of the central shaft 2011, each connecting arm 20121 extends in the radial direction of the central shaft 2011, one end (inner end) of each connecting arm 20121 is connected to the central shaft 2011, and the other end (outer end) of each connecting arm is connected to the inner tube 2 through a connecting member. Thus, by connecting the inner tube 2 with at least four connecting arms 20121, the connection reliability and stability of the inner tube holder 201 and the inner tube 2 can be ensured.

Alternatively, as shown in fig. 5, the number of the connection arms 20121 is six. One end of each connecting arm 20121 is connected with the central shaft 2011, one side, facing the inner barrel rear cover 22, of the other end of each connecting arm 20121 is provided with a positioning lug 20122, positioning of the inner barrel rear cover 22 and the inner barrel support 201 can be achieved through arrangement of the positioning lug 20122, connection reliability of the inner barrel rear cover 22 and the inner barrel support 201 is guaranteed, assembly efficiency is improved, contact area between the inner barrel rear cover 22 and the inner barrel support 201 can be reduced, a gap is reserved between the inner barrel rear cover 22 and the inner barrel support 201, water can flow, and dirt in the inner barrel rear cover can be washed.

In some examples, two adjacent connecting arms 20121 are connected by a web 20123, the web 20123 has a lightening hole 20124 penetrating in a thickness direction thereof, the web 20123 can connect the two adjacent connecting arms 20121 together, thereby ensuring structural strength of the inner barrel support 201, prolonging a service life of the inner barrel support 201, and the lightening hole 20124 provided in the web 20123 can lighten the weight of the inner barrel support 201.

Optionally, the web 20123 forms a scallop shape. For example, the number of the connecting arms 20121 is six, any two adjacent connecting arms 20121 are connected through the fan-shaped webs 20123, that is, the number of the fan-shaped webs 20123 is six, and the connecting lines of the arc-shaped outer contour lines of the six fan-shaped webs 20123 form a complete circle, so that the structural compactness and the aesthetic property of the inner barrel support 201 are ensured. Further, the arcuate side of each scalloped web 20123 is in arcuate transition with the connecting arm 20121.

According to one embodiment of the invention, the transmission means is a planetary gear set 6 in driving connection with the main shaft 31 and the stirrer 4, respectively. The specific construction of the planetary gear unit 6 here may be the same as that of the planetary gear unit 6 described in the above embodiments, and of course, corresponding advantageous technical effects may also be produced, so that details will not be given here.

A drum washing machine 100 according to another embodiment of the present invention will be described with reference to fig. 1 to 24.

As shown in fig. 1 to 24, a drum washing machine 100 according to another embodiment of the present invention includes an outer tub 1, an inner tub 2, an inner tub supporter 201, a mounting base 62, a pulsator 4, and a driver.

The inner cylinder 2 is rotatably provided in the outer cylinder 1. The inner cylinder bracket 201 is mounted on the rear wall of the inner cylinder 2 and is located between the rear wall of the inner cylinder 2 and the rear wall of the outer tub 1, and a shaft hole 2013 is provided in the middle of the inner cylinder bracket 201. The mounting base 62 is rotatably provided in the shaft hole 2013. The agitator 4 is provided in the inner cylinder 2 and is connected to the mounting base 62 to rotate together with the mounting base 62. The driver is connected with the inner cylinder 2 through the main shaft 31, the main shaft 31 transmits the torque of the driver to the inner cylinder 2, the main shaft 31 is in transmission connection with the stirrer 4 through the transmission assembly, and the transmission assembly transmits the torque of the main shaft 31 to the stirrer 4.

The outer circumferential surface of the mounting base 62 has a transverse annular mating surface 6201 extending along an axial direction thereof and a longitudinal annular mating surface 6202 extending along a radial direction thereof, and the outer circumference of the mounting base 62 is sleeved with a part seal 641, and the part seal 641 seals a gap between the longitudinal annular mating surface 6202 and the inner cylinder support 201.

In addition, by adopting the cooperation of the part-mounted seal 641 and the longitudinal annular cooperation surface 6202 of the mounting base 62, the axial end face sealing mode with the mounting base 62 is realized, and by adopting the axial end face sealing mode, the coaxiality requirement of the part-mounted seal 641 can be reduced, the assembly of the part-mounted seal 641 and the mounting base 62 can be simplified, the axial length of the part-mounted seal 641 is shortened, the axial assembly space is reduced, and the volume of the inner cylinder 2 is further increased.

As shown in fig. 7, according to one embodiment of the present invention, the mounting base 62 includes a base body 6231 and a wear sleeve 6232 fitted over the outer periphery of the base body 6231, with a longitudinal annular mating surface 6202 and a lateral annular mating surface 6201 formed on the outer surface of the wear sleeve 6232. That is, the wear sleeve 6232 is positioned between the base body 6231 and the partial seal 641, and the wear sleeve 6232 can secure dimensional accuracy and improve wear resistance.

In some examples, the outer periphery of the base body 6231 has an annular stop ring 62311, the wear sleeve 6232 is located on one side of the annular stop ring 62311, and one end of the wear sleeve 6232 can abut against the annular stop ring 62311, so as to realize positioning and installation, and avoid excessive axial movement of the wear sleeve 6232 from affecting the sealing effect of the partial seal 641.

As shown in fig. 7 and 8, the partial seal 641 includes an annular body portion 6411, a first transverse sealing lip 6412, according to one embodiment of the invention. The annular body 6411 is fitted around the mounting base 62, and the outer wall of the annular body 6411 is tightly fitted to the inner wall surface of the shaft hole 2013. The first transverse sealing lip 6412 extends in the axial direction of the annular body portion 6411 and is formed in an annular shape, one end of the first transverse sealing lip 6412 is connected with the inner peripheral edge of the sealing body portion, and the other end of the first transverse sealing lip 6412 abuts against the longitudinal annular mating surface 6202, thereby realizing an axial end face seal form of the mounting base 62.

Further, the partial seal 641 further includes a longitudinal sealing lip 6413, the longitudinal sealing lip 6413 extending in the radial direction of the annular body portion 6411 and forming an annular shape, one end of the longitudinal sealing lip 6413 being connected to the inner peripheral edge of the sealing body portion, the other end of the longitudinal sealing lip 6413 abutting the transverse annular mating surface 6201, thereby effecting a radial seal form of the mounting base 62.

Specifically, when the part seal 641 is assembled, the first transverse sealing lip 6412 can be in contact fit with the longitudinal annular matching surface 6202 of the mounting base 62, so as to play a role in positioning, and then the longitudinal sealing lip 6413 can be held tightly with the transverse annular matching surface 6201 of the mounting base 62, so that the installation is convenient and the tightness is good.

According to a further embodiment of the invention, the partial seal 641 further comprises a second transverse sealing lip 6414, the second transverse sealing lip 6414 extending in the axial direction of the annular body portion 6411 and forming an annular shape, one end of the second transverse sealing lip 6414 being connected to the longitudinal sealing lip 6413, the other end of the second transverse sealing lip 6414 abutting the longitudinal annular mating surface 6202, thereby providing a dual axial end face seal form of the mounting base 62, thereby enhancing the sealing effect of the partial seal 641. It should be noted that the "first" and "second" features defined herein may include more of these features, either explicitly or implicitly.

In some examples, the free ends of the first and second transverse sealing lips 6412, 6414 each extend obliquely relative to the transverse direction (i.e., the axial direction of the annular body portion 6411), and the free ends of the longitudinal sealing lips 6413 extend obliquely relative to the longitudinal direction (i.e., the radial direction of the annular body portion 6411).

According to one embodiment of the present invention, a transmission assembly is mounted within the mounting base 62, and the transmission assembly is connected to the agitator 4 through the mounting base 62, the transmission assembly transmitting the torque of the spindle 31 to the mounting base 62. That is, the transmission assembly is provided in the mounting base 62, thereby constituting the transmission device of the above embodiment, and the rotation of the pulsator 4 is driven to rotate by transmitting the torque of the main shaft 31 to the pulsator 4 by the transmission device, whereby the rotation of the pulsator 4 and the rotation of the inner tub 2 can be combined with each other into various washing manners, and the washing manners of the drum washing machine 100 are diversified.

In some examples, the transmission assembly is switchable between a first state and a second state; when the transmission assembly is in the first state, the transmission assembly transmits the torque of the main shaft 31 to the stirrer 4 in the same direction so as to enable the stirrer 4 and the inner cylinder 2 to rotate in the same direction; when the transmission assembly is in the second state, the transmission assembly transmits torque of the main shaft 31 to the pulsator 4 reversely, so that the pulsator 4 and the inner tube 2 reversely rotate.

For example, when the drum washing machine 100 is in the dehydration mode, the transmission assembly can be switched to the first state, and the agitator 4 and the inner drum 2 are driven to rotate in the same direction by the power transmission mode of the transmission assembly in the first state, so that the clothes are not wound, torn and the like during high-speed rotation dehydration.

When the drum washing machine 100 is in the washing mode, the transmission assembly can be switched to the second state, and the agitator 4 and the inner drum 2 are driven to reversely rotate by the power transmission mode of the transmission assembly in the second state, so that clothes and water are fully agitated, and the washing effect of clothes washing is improved.

It will be appreciated by those skilled in the art that the combination of the state switching of the transmission assembly and the mode in which the drum washing machine 100 is currently located is not limited to the above-described embodiment, and that the first state and the second state of the transmission assembly may be combined simultaneously in either of the spin-drying and washing modes.

Therefore, the rotation direction of the stirrer 4 can be adjusted by arranging the transmission assembly capable of being switched between the first state and the second state, so that the stirrer 4 and the inner cylinder 2 rotate in the same direction and in opposite directions, and the inner cylinder 2 is matched to form working modes suitable for different working conditions.

In some specific examples, the transmission assembly is a planetary gear assembly 61 and includes a planet carrier 611, a plurality of planet gears 612, and a planet gear outer housing 613. That is, the planetary gear assembly 61 is provided in the mounting base 62, so that the planetary gear unit 6 of the above-described embodiment is constituted, and of course, corresponding advantageous technical effects can be produced, and thus will not be described in detail herein.

In some examples, the planet gear outer gear housing 613 is mounted within the mounting base 62 and is fixedly connected to the mounting base 62, thereby ensuring that the planet gear outer gear housing 613 moves synchronously with the mounting base 62, and also enabling a modular design of the planet gear assembly 6. The planetary gear outer gear housing 613 is in driving connection with the agitator 4 through the mounting base 62, for example, the mounting base 62 and the agitator 4 may be combined by screws, and the planetary gear outer gear housing 613, the mounting base 62 and the agitator 4 are fixedly connected to achieve synchronous operation, so that torque of the main shaft 31 is conveniently transferred to the agitator 4 through the planetary gear unit 6.

According to a further example of the present invention, the drum washing machine 100 further includes a second shaft 32 and a brake 7, the second shaft 32 being engaged with the planetary carrier 611. For example, the side peripheral wall of the second shaft 32 is provided with splines, that is, the second shaft 32 forms a spline shaft, the carrier 611 is provided with spline grooves which are in spline fit with the second shaft 32, and the second shaft 32 and the carrier 611 are fixedly connected by the spline fit with the spline grooves, so that synchronous operation of the second shaft 32 and the carrier 611 is ensured. The brake 7 controls whether the carrier 611 is braked or not via the second shaft 32. For example, when the brake 7 brakes the second shaft 32, the carrier 611 cannot rotate due to being braked; when the brake 7 is disengaged from the second shaft 32, the carrier 611 is in a free state.

In some examples, the spindle 31 has a cavity therein extending axially therethrough, and the second shaft 32 extends through the cavity. For example, the central axis of the main shaft 31 is parallel to and coincides with the central axis of the second shaft 32, and the main shaft 31 is rotatable relative to the second shaft 32, thereby driving the inner drum 2 and the agitator 4 to rotate, respectively, and ensuring the normal operation of the drum washing machine 100.

According to one embodiment of the present invention, the main shaft 31 is connected to the inner tub 2 through the inner tub supporter 201 and rotatably supported to the rear wall of the outer tub 1. That is, the main shaft 31 can directly drive the inner cylinder 2 to rotate, and simultaneously can drive the stirrer 4 to rotate through the planetary gear unit 6.

Some specific embodiments of the drum washing machine 100 according to the present invention are described in detail below with reference to fig. 1 to 25.

As shown in fig. 1, 22 and 24, a drum washing machine 100 according to one embodiment of the present invention includes: the outer tub 1, the inner tub 2, the main shaft 31, the second shaft 32, a driver (a motor 5 described below), the planetary gear unit 6, and the brake 7.

The outer tub 1 extends in the front-rear direction and the front end of the outer tub 1 is open, the rear wall of the outer tub 1 is provided with a mounting hole 11 penetrating in the thickness direction thereof, and a spindle bearing housing 11 extending in the axial direction thereof is provided in the mounting hole 11.

The spindle 31 extends in the front-rear direction and has a cavity 311 extending in the axial direction thereof, the spindle 31 being disposed through two spindle bearings 314 arranged at intervals in the spindle bearing housing 11. One end (front end shown in fig. 1) of the main shaft 31 extending out of the inner surface of the rear wall of the outer tub 1 is fixedly connected with the inner tube support 201, one end (rear end shown in fig. 1) of the main shaft 31 extending out of the outer surface of the rear wall of the outer tub 1 is connected with a locking nut 313, a belt pulley 312 for installing a belt 3121 is arranged between the locking nut 313 and the outer surface of the rear wall of the main shaft 31, and the belt pulley 312 is in transmission connection with a motor shaft 51 of the motor 5 through the belt 3121.

The inner cylinder 2 includes an inner cylinder body 21, an inner cylinder rear cover 22 and an inner cylinder front cover 23, the inner cylinder body 21 extends along the axial direction of the outer cylinder 1 and is open at both ends, the inner cylinder rear cover 22 forms a ring shape and is connected with the rear end of the inner cylinder body 21 in a sealing manner, and the inner cylinder 2 front cover 23 forms a ring shape and is connected with the front end of the inner cylinder body 21. The inner tub 2 is rotatably installed in the outer tub 1 by an inner tub bracket 201. The inner cylinder holder 201 includes a central shaft 2011 and a frame 2012 connected to an outer wall of the central shaft 2011, the inner cylinder 2 is supported on the frame 2012, the central shaft 2011 is rotatably supported on a rear wall of the outer cylinder 1, and a shaft hole 2013 is provided at an intermediate position of the central shaft 2011.

The main shaft 31 is inserted into the shaft hole 2013 and fixedly connected to the inner cylinder holder 201. The second shaft 32 is inserted into the cavity 311 of the main shaft 31 by at least two second shaft bearings 3211 disposed at intervals along the axial direction thereof. The two ends of the second shaft 32 extend out of the two ends of the main shaft 31 respectively, and one end (the front end shown in fig. 1) of the second shaft 32 extending out of the main shaft 31 is matched with the planetary gear part 6 through a second shaft end bearing 3212, and a shaft sealing member 325 positioned outside the second shaft end bearing 3212 is further arranged between the planetary gear part 6 and the second shaft 31, so that the sealing connection between the planetary gear part 6 and the second shaft 31 is ensured. The other end of the second shaft 32 (the rear end as shown in fig. 1) that protrudes outside the main shaft 31 is fitted with a brake disc 322.

The agitator 4 is rotatably provided at the through opening 221 of the inner tub back 22, and the outer periphery of the agitator 4 has a flange extending rearward in the axial direction of the inner tub back 22, and the through opening 221 of the inner tub back 22 has a groove 223 extending in the circumferential direction thereof along the periphery thereof, the flange being fitted to the groove 223 without contact, and the agitator 4 being fitted to the planetary gear unit 6 (the mounting base 62 as described below).

The planetary gear unit 6 of the drum washing machine 100 according to the embodiment of the present invention will be described in detail.

The planetary gear assembly 6 includes a planetary gear assembly 61, a mounting base 62 and a planetary gear bearing 63. The mounting base 62 has a through hole 622, the planetary gear assembly 61 is provided in the mounting base 62, the planetary gear bearing 63 is provided in the mounting base 62 on a side of the mounting base 62 facing away from the through hole 622, and the planetary gear bearing 63 is provided in a rear portion in the mounting base 62.

The planetary gear assembly 61 includes a planet carrier 611, three planet gears 612, and a planet gear outer housing 613. The planetary carrier 611 includes a planetary carrier 6111, a planetary fixed disk 6116. One side of the planet wheel support 6111 is provided with a plurality of mounting bosses 6112 and a plurality of planet wheel mounting seats 6114, the plurality of mounting bosses 6112 and the plurality of planet wheel mounting seats 6114 are alternately arranged along the circumferential direction of the planet wheel carrier 611, each planet wheel mounting seat 6114 is provided with a planet wheel fixing shaft 6115, one end of the planet wheel fixing shaft 6115 is arranged in the planet wheel mounting seat 6114, and the other end is arranged in a limit hole 6118 which is suitable for matching of the planet wheel fixing disc 6116 and is used for mounting the planet gear 612; each mounting boss 6112 is provided with a positioning column 6113, the planet wheel fixing disc 6116 is provided with a positioning hole 6117 matched with the positioning column 6113, and the positioning column 6113 is welded at the positioning hole 6117, so that the planet wheel fixing disc 6116 is connected to the planet wheel bracket 6111. Three planetary gears 612 are mounted on the planetary carrier 611 and respectively mesh with the planetary outer gear housing 613.

The planetary gear outer gear housing 613 of the planetary gear assembly 61 is provided with a flange 6131 protruding from the outer surface, and the inner surface of the mounting base 62 is provided with a clamping groove 621 adapted to the flange 6131, thereby fixedly connecting the planetary gear outer gear housing 613 with the mounting base 62.

The installation base 62 comprises a base body 6231 and a wear-resistant sleeve 6232 sleeved on the periphery of the base body 6231, an annular limiting ring 62311 is arranged on the periphery of the base body 6231, one end of the wear-resistant sleeve 6232 can be stopped against the annular limiting ring 62311, the wear-resistant sleeve 6232 is provided with a part-mounted sealing element 641, and the base body 6231 and the inner cylinder support 201 and the base body 6231 and the main shaft flange 315 are in sealing connection through the part-mounted sealing element 641.

The planetary gear unit 6 is rotatably engaged with the second shaft 32 through a second shaft end bearing 3212. The planetary gear unit 6 is rotatably engaged with the main shaft 31 through a planetary bearing 63. Specifically, the spindle 31 is sleeved with a spindle sleeve 316, and the spindle sleeve 316 is provided with a spindle flange 315 connected with the inner cylinder support 201.

The brake 7 of the drum washing machine 100 according to the embodiment of the present invention is described in detail as follows.

As shown in fig. 13 to 17, according to an embodiment of the present invention, the stopper 7 is provided at the rear of the tub 1 and includes a chute housing 71, a stopper rod 72, a stopper driver 73, and a stopper cam 74.

The chute seat 71 is provided on the rear wall of the outer tub 1 by a stopper bracket 75, and a stopper chute 751 extending in the radial direction of the brake disc 322 is provided on the stopper bracket 75. The chute seat 71 is provided with a chute 711 extending linearly, a circumferential positioning chute 713 and a supporting chute 714, the chute 711 is provided with a limiting table 712, and the chute seat 71 is also provided with a through hole 715 communicated with the chute 711.

The brake lever 72 is slidably engaged with the slide 711 between an extended position and a retracted position. The brake lever 72 includes: the slide engaging portion 721, the transmission portion 722, the bridge portion 723, and the braking portion 724, both ends of the slide engaging portion 721 are connected to the transmission portion 722 and the bridge portion 723, respectively, and the braking portion 724 is connected to an end of the bridge portion 723 remote from the slide engaging portion 721.

The slide engaging portion 721 is slidably engaged with the slide 711, and a cross section of the slide engaging portion 721 and a minimum cross section of the slide 711 are circular, the slide engaging portion 721 is provided with a plurality of axial reinforcing ribs 7211, each axial reinforcing rib 7211 extends along an axial direction of the slide engaging portion 721 and the plurality of axial reinforcing ribs 7211 are disposed at intervals along a circumferential direction of the slide engaging portion 721.

The driving portion 722 is slidably supported by the supporting chute 714. One side of the transmission part 722 is provided with a limiting block 720, the limiting block 720 is slidably matched with the circumferential positioning sliding groove 713, the limiting block 712 is arranged in the sliding way 711 to be matched with the limiting block 720 on the brake rod 72, so that the moving path of the brake rod 72 is limited, namely, the brake rod 72 can be axially limited, the brake rod 72 is prevented from sliding out of the sliding way 711 to be separated from the sliding groove seat 71, the operation reliability of the brake 7 is further ensured, and the other side of the transmission part 722 is provided with a linear sliding groove 725.

The bridge 723 is provided with a plurality of lateral reinforcing ribs 7231 and a plurality of longitudinal reinforcing ribs 7232, each lateral reinforcing rib 7231 extending in the width direction of the bridge 723 and the plurality of lateral reinforcing ribs 7231 being disposed at intervals in the length direction of the bridge 723, each longitudinal reinforcing rib 7232 extending in the length direction of the bridge 723 and the plurality of longitudinal reinforcing ribs 7232 being disposed at intervals in the width direction of the bridge 723, each longitudinal reinforcing rib 7232 being connected to the plurality of lateral reinforcing ribs 7231, respectively.

Brake portion 724 engages brake disc 322 when brake lever 72 is in the extended position and brake portion 724 disengages brake disc 322 when brake lever 72 is in the retracted position.

The brake cam 74 is mounted at the through hole 715 of the chute seat 71 and has an eccentric post 741, and the brake actuator 73 is used for driving the brake cam 74 to rotate, so that the eccentric post 741 eccentrically rotates, and the eccentric post 741 cooperates with the linear chute 725 on the transmission portion 722 to drive the brake lever 72 to linearly move.

As shown in fig. 25, according to another embodiment of the present invention, a brake 7 is provided at the rear of the tub 1 and includes a brake disc 322, a brake seat 71, a brake pawl 76, a brake lever 72, a brake actuator 73, and a brake cam 74. The brake seat 71 is mounted on the rear wall of the tub 1.

The brake pawl 76 includes a first pawl portion 762 and a second pawl portion 763. One end of the first jaw 762 is pivotally mounted to the brake seat 71, one end of the second jaw 763 is pivotally mounted to the brake seat 71, the other end of the first jaw 762 is provided with a first driving post 7622, and the other end of the second jaw 763 is provided with a second driving post 7632. The brake disc 322 is located between the first jaw 762 and the second jaw 763, and gear teeth 3221 may be formed on the entire outer circumferential surface of the brake disc 322, with the jaw teeth 761 being formed at a section of the inner side surface of the first jaw 762 and a section of the inner side surface of the second jaw 763, respectively. Wherein, when the brake pawl 76 is in the tightened state, the other end of the first claw portion 762 and the other end of the second claw portion 763 are close to each other, so that the first claw portion 762 and the second claw portion 763 hold the brake disc 322 together, and the brake disc 322 is braked. With the brake pawl 76 in the deployed state, the other end of the first jaw 762 and the other end of the second jaw 763 are away from each other, so that the first jaw 762 and the second jaw 763 release the brake disc 322, allowing the brake disc 322 to freely rotate.

The brake lever 72 is slidably engaged with the slide 711 between an extended position and a retracted position. The detent lever 72 includes a lever 727, a drive rod 728, and a detent compression spring 729 compressed between the lever 727 and the drive rod 728. The brake lever 72, when in the extended position, acts on the brake pawl 76 and causes the brake pawl 76 to switch to the tightened state to hug the brake rotor 322. The brake lever 72, when in the retracted position, acts on the brake pawl 76 and causes the brake pawl 76 to switch to the deployed state to release the brake disc 322. The brake seat 71 has a first pivot post and a second pivot post disposed therein, the first claw 762 has a first pivot hole 7621 pivotally sleeved on the first pivot post, and the second claw 763 has a second pivot hole 7631 pivotally sleeved on the second pivot post. Whereby the one end of the first claw portion 762 and the one end of the second claw portion 763 can be pivotally mounted to the brake seat 71, respectively. The brake lever 72 is provided with a first driving chute 7261 and a second driving chute 7262, and the first driving chute 7261 and the second driving chute 7262 are disposed obliquely with respect to the sliding direction of the brake lever 72, respectively. The brake lever 72 is provided with a first limit groove 7263 and a second limit groove 7264, the first limit groove 7263 and the second limit groove 7264 are respectively parallel to the sliding direction of the brake lever 72, the first limit groove 7263 is communicated with one end of the first driving chute 7261 far away from the brake disc 322, the first limit groove 7263 extends from the first driving chute 7261 in a direction far away from the brake disc 322, the second limit groove 7264 is communicated with one end of the second driving chute 7262 far away from the brake disc 322, and the second limit groove 7264 extends from the second driving chute 7262 in a direction far away from the brake disc 322. The first drive post 7622 is slidably engaged with the first drive chute 7261 and the first limit slot 7263, and the second drive post 7632 is slidably engaged with the second drive chute 7262 and the second limit slot 7264.

The brake cam 74 is mounted on the brake housing 71 and has an eccentric post 741, and the brake actuator 73 is configured to actuate the brake cam 74 to rotate, thereby eccentrically rotating the eccentric post 741, and the eccentric post 741 cooperates with the linear slide slot 720 on the drive rod 728 to actuate the brake lever 72 to move linearly.

According to another embodiment of the present invention, one end of the second shaft 32 extending out of the rear wall of the outer tub 1 is provided with an adapter 323 for connecting to a water supply device, the adapter 323 is sleeved on the second shaft 32 through an adapter bearing 3231, and the second shaft 32 is further sleeved with an adapter seal 3232 in sealing connection with the adapter 323, and the adapter seal 3232 is located outside the adapter bearing 3231.

Further, the second shaft 32 has a water supply passage 320 extending in the axial direction thereof, one end of the water supply passage 320 communicates with the adapter 323, and the other end of the water supply passage 320 communicates with the agitator 4. The stirrer 4 has a water collecting chamber 42 for communicating with the water supply passage 320, a water distribution channel 43 defined by a stirring rib 44, and water spouts 41 provided on the stirring rib 44.

The water supply device comprises a water supply pipe and a water supply pump, wherein the first end of the water supply pipe is communicated with the outer barrel 1, the second end of the water supply pipe is communicated with the water supply channel 320, and the water supply pump is arranged on the water supply pipe, so that when the water supply pump works, water in the outer barrel 1 is conveyed into the stirrer 4 through the water supply pipe and the water supply channel 320.

The operation of the drum washing machine 100 according to the embodiment of the present invention is described in detail as follows.

When the drum washing machine 100 is operated in the washing mode, the brake driver 73 drives the brake lever 72 to move to the extended position, the brake portion 724 of the brake lever 72 is engaged with the brake disc 322 to lock the brake disc 322 so that the second shaft 32 is stationary, and since the planetary gear carrier 611 of the planetary gear unit 6 is engaged with the second shaft 32 by the spline structure, the planetary gear carrier 611 is also stationary, and the plurality of planetary gears 612 provided on the planetary gear carrier 611 can only rotate.

Subsequently, when the motor 5 is operated, the belt 3121 drives the belt pulley 312 to rotate forward, so that the main shaft 31 and the inner cylinder 2 are driven to rotate forward, the main shaft 31 is meshed with the plurality of planetary gears 612, the main shaft 31 can simultaneously drive the plurality of planetary gears 612 to rotate when rotating, so that the planetary gear outer gear housing 613 is driven to rotate reversely, and the planetary gear outer gear housing 613 is connected with the mounting base 62, and the mounting base 62 is connected with the stirrer 4, so that the main shaft 31 drives the stirrer 4 to rotate reversely through the planetary gear part 6.

In the process, the clothes are lifted and fallen in the inner cylinder 2, and then lifted and fallen again, so that the clothes can be washed cleanly, and meanwhile, under the action of the stirrer 4, the friction and rubbing effects of the pulsator on the clothes are increased on the basis of traditional beating and washing (only inner cylinder rotation), so that the washing effect is further improved, and the washing time is shortened.

When the pulsator 4 has the water spraying hole 41, the water supply pump may supply water to the pulsator 4 through the water supply passage 320 of the second shaft 2 or through the water supply pipe, so that the water spraying hole 41 sprays water to the laundry in the inner tub 2 to wet the laundry, thereby improving the laundry wetting effect and further improving the laundry washing effect.

It will be appreciated that when the drum washing machine 100 is in the washing mode, the planetary gear unit 6 transmits the forward rotation of the main shaft 31 to the reverse rotation of the pulsator 4, and at the same time, the planetary gear unit 6 is in driving connection with the main shaft 31, so that the main shaft 31 can be decelerated, thereby making the rotational speed of the pulsator 4 lower than that of the main shaft 31. The terms "forward rotation" and "reverse rotation" are used herein in a relative sense and do not refer to a particular counterclockwise or clockwise direction of rotation.

When the drum washing machine 100 is operated in the dehydrating mode, the brake actuator 73 drives the brake lever 72 to move to the retracted position, and the brake portion 724 of the brake lever 72 releases the brake disc 322 to leave the second shaft 32 in a free state.

Then, when the motor 5 drives the belt pulley 312 to rotate forward through the belt 3121, the main shaft 31 and the inner cylinder 2 can be driven to rotate forward, and then the main shaft 31 drives the planetary gear 612 to rotate automatically, so as to drive the mounting base 62 and the stirrer 4 to rotate in the same direction and at the same speed as the inner cylinder 2.

According to the drum washing machine 100 of the embodiment of the invention, the inner drum 2 is driven by the main shaft 31 through the driver, the number of stages of power transmission is smaller, the power transmission is more direct, the inner drum 2 operates more stably, the planetary gear unit 6 is arranged between the main shaft 31 and the stirrer 4, the torque of the main shaft 31 is transmitted to the stirrer 4 through the planetary gear unit 6, and the load at the stirrer 4 is far smaller than the load at the inner drum 2, so that compared with the drum washing machine with a pulsator in the related art, the load acting on the planetary gear unit 6 is greatly reduced, the risk of damage of the planetary gear unit 6 is greatly reduced, and the service life of the drum washing machine 100 is prolonged.

Other constructions and operations of the drum washing machine 100 according to the embodiment of the present invention are known to those skilled in the art, and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A drum washing machine, comprising:

An outer tub;

the inner barrel is rotatably arranged in the outer barrel;

the stirrer is rotatably arranged in the inner cylinder;

The driver is connected with the inner cylinder through a main shaft, the main shaft transmits the torque of the driver to the inner cylinder, the main shaft is in transmission connection with the stirrer through a transmission device, and the transmission device transmits the torque of the main shaft to the stirrer;

wherein the inner cylinder comprises an inner cylinder body with two open axial ends and an inner cylinder rear cover arranged at the rear end of the inner cylinder body, a through hole is arranged in the middle of the inner cylinder rear cover, the stirrer is rotatably arranged at the through hole, the front projection of the plane of the through hole is covered by the stirrer, the drum washing machine also comprises an inner cylinder bracket and a mounting base, the inner cylinder bracket is arranged at the rear end of the inner cylinder body and is positioned between the inner cylinder rear cover and the rear wall of the outer cylinder, the main shaft is connected with the inner cylinder through the inner cylinder bracket and is rotatably supported at the rear wall of the outer cylinder, the installation base is connected with the stirrer, the outer peripheral surface of the installation base is provided with a transverse annular matching surface extending along the axial direction of the installation base and a longitudinal annular matching surface extending along the radial direction of the installation base, a part-mounted sealing piece is sleeved on the outer periphery of the installation base and seals a gap between the longitudinal annular matching surface and the inner cylinder support, the transmission device is a planetary gear part which is respectively connected with the main shaft and the stirrer in a transmission way, the planetary gear part comprises a planetary gear assembly, and the planetary gear assembly comprises a planetary wheel carrier;

The drum washing machine further includes:

A second shaft engaged with the carrier;

A brake which is arranged at the rear part of the outer barrel and comprises a brake disc, a brake seat and a brake pawl, wherein the brake seat is arranged on the rear wall of the outer barrel, the brake disc is connected to the second shaft in a transmission way, the brake pawl comprises a first claw part and a second claw part, one end of the first claw part is pivotably arranged on the brake seat, one end of the second claw part is pivotably arranged on the brake seat, the other end of the first claw part and the other end of the second claw part are close to each other when the brake pawl is in a tightening state, the first claw part and the second claw part jointly hold the brake disc, the brake disc is braked, and the other end of the first claw part and the other end of the second claw part are far away from each other when the brake pawl is in a spreading state, and the first claw part and the second claw part release the brake disc to allow the brake disc to freely rotate;

The brake disc is positioned between the first claw portion and the second claw portion, gear teeth are formed on the whole outer peripheral surface of the brake disc, and claw teeth are respectively formed on one section of the inner side surface of the first claw portion and one section of the inner side surface of the second claw portion.

2. The drum type washing machine as claimed in claim 1, wherein the periphery of the opening is provided with an inner convex ring extending along the periphery thereof, the outer periphery of the pulsator is provided with an outer convex ring extending along the periphery thereof, and the outer convex ring is sleeved outside the inner convex ring.

3. The drum washing machine as claimed in claim 1, wherein the inner tub rear cover is formed in a ring shape, and an inner tub of the inner tub rear cover has a groove extending along a circumference thereof, and an outer circumference of the pulsator has a rim extending along a circumference thereof, the rim being movably fitted to the groove.

4. The drum washing machine as claimed in claim 1, wherein a side of the inner tub rear cover facing the inner tub inner cavity has a plurality of rear cover protrusions surrounding the through-hole, and the plurality of rear cover protrusions are spaced apart along a circumference of the through-hole.

5. The drum washing machine as claimed in claim 1, wherein a side of the pulsator facing the inner chamber of the inner tub has a plurality of pulsator ribs spaced apart along a circumference of the through-hole.

6. The drum washing machine as claimed in claim 1, wherein the inner tub rear cover is an integral piece, and the pulsator is an integral piece.

7. The drum washing machine as claimed in any one of claims 1 to 6, wherein the planetary gear part is switchable between a first state and a second state;

when the planetary gear unit is in the first state, the planetary gear unit transmits the torque of the main shaft to the stirrer in the same direction so as to enable the stirrer and the inner cylinder to rotate in the same direction;

When the planetary gear unit is in the second state, the planetary gear unit reversely transmits the torque of the main shaft to the stirrer so as to reversely rotate the stirrer and the inner cylinder.

8. The drum washing machine as claimed in claim 7, wherein the planetary gear unit includes a planetary gear assembly, and the planetary gear assembly includes:

A planet carrier;

A plurality of planetary gears rotatably mounted to the planetary carriers and engaged with the main shafts, respectively;

The planetary gear outer gear shell is sleeved outside a plurality of planetary gears and meshed with the planetary gears respectively, and is in transmission connection with the stirrer;

Wherein the planetary gear unit is in the first state when the carrier is allowed to freely rotate, and the planetary gear unit is in the second state when the carrier is braked.