CN212582228U

CN212582228U - Balance assembly and household appliance

Info

Publication number: CN212582228U
Application number: CN202021557015.5U
Authority: CN
Inventors: 欧怡; 王跃辉
Original assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-02-23
Anticipated expiration: 2030-07-30

Abstract

The utility model discloses a balanced subassembly and domestic appliance. The balancing assembly is used for household appliances. The balancing component comprises a balancing body, a balancing block, a transmission piece and a power part. Set up annular cavity in the balancing body, the driving medium setting just can rotate around the axis of cavity in the cavity. The balance weight is positioned in the cavity and connected with the transmission part. The power component is fixedly connected with the balance body and configured to drive the transmission piece to rotate in the cavity, so that the balance body is driven to rotate around the central axis in the cavity. So, power unit is fixed to the counter balance body, and it does not participate in the motion along with the balancing piece, and power unit can not receive centrifugal force's influence when driving medium rotates in order to drive the balancing piece and rotate to thereby make power unit and driving medium can drive the driving medium motion smoothly at the high-speed pivoted in-process of balancing piece and drive the balancing piece and rotate.

Description

Balance assembly and household appliance

Technical Field

The utility model relates to a domestic appliance technical field, more specifically say, involve a balanced subassembly and domestic appliance.

Background

In the household appliance, the cavity rotates at a high speed, which easily causes uneven load distribution in the cavity, for example, in the dehydration stage of the washing machine, the laundry in the washing unit is unevenly distributed, an eccentric condition exists, and when the washing unit rotates at a high speed, great vibration is generated. Therefore, the eccentric mass is usually balanced by providing a balancing ring to reduce vibration. Specifically, the balance ring is usually provided with a balance weight therein, and the vibration and noise of the cavity can be offset or reduced by moving the balance weight.

In the related art, a driving device is mounted on the balance weight to drive the balance weight to move, and the driving device moves along with the balance weight while the balance weight moves. However, when the cavity of the household appliance (for example, the inner tub of the washing machine) is operated at a high speed, the driving device is easily affected by the centrifugal force, so that the driving device cannot smoothly drive the balance weight to move.

SUMMERY OF THE UTILITY MODEL

The utility model discloses embodiment provides a balanced subassembly and domestic appliance.

The utility model discloses embodiment's a balanced subassembly for domestic appliance, balanced subassembly includes:

the balance body is internally provided with an annular cavity;

the transmission piece is arranged in the cavity and can rotate around the central axis of the cavity in the cavity;

the balance block is arranged in the cavity and is connected with the transmission part; and

the power component is fixedly connected with the balance body and is configured to drive the transmission piece to rotate in the cavity, so that the balance body is driven to rotate around the central axis of the cavity in the cavity. In the balance assembly, the transmission part is fixedly connected with the balance block, and the power part is arranged on the fixed balance body and can drive the transmission part to rotate so as to drive the balance block to rotate in the cavity. Therefore, the power component is fixed relative to the balance body and does not participate in movement along with the balance block, and the power component is not influenced by centrifugal force when the driving transmission piece rotates to drive the balance block to rotate, so that the power component and the transmission piece can smoothly drive the transmission piece to move in the high-speed rotating process of the cavity of the household appliance to drive the balance block to rotate.

In some embodiments, the power component includes a driving part and a rotating part, the driving part is fixedly connected to the balance body, the rotating part is connected to the driving part and the transmission part, and the driving part is configured to drive the rotating part to rotate so as to drive the transmission part to rotate in the cavity.

In some embodiments, a side of the transmission member near the central axis of the chamber is provided with a toothed portion, and the rotating member includes a gear engaged with the toothed portion.

In some embodiments, the transmission member is annular, the inner side of the transmission member is formed with the tooth portion, and the outer side of the transmission member abuts against the inner wall of the cavity.

In some embodiments, the counterbalance assembly includes a roller disposed between an inner wall of the chamber and an outer side of the drive member, the roller rotating between the inner wall of the chamber and the outer side of the drive member when the drive member rotates.

In some embodiments, the counterbalance assembly further includes a guide structure connecting the counterbalance body and the drive member, the guide structure configured to guide the drive member for rotation within the chamber.

In some embodiments, the guide structure includes a first connecting member and a second connecting member, the first connecting member is disposed in the cavity and is fixedly connected to the balance body, the power component is fixedly connected to the first connecting member, the second connecting member is disposed in the first connecting member and is rotatably connected to the first connecting member, the transmission member is fixedly connected to the second connecting member, and when the transmission member rotates, the transmission member drives the second connecting member to rotate relative to the first connecting member.

In some embodiments, the transmission member is disposed on an inner wall of the second connector.

In some embodiments, the guide structure comprises a bearing, the first connection is an outer race of the bearing, and the second connection is an inner race of the bearing.

In some embodiments, the balance assembly further comprises a first fixing member, and the power component is fixedly connected with the first connecting member through the first fixing member.

In some embodiments, the number of the guiding structures is at least two, the number of the transmission members is at least two, the at least two guiding structures are arranged side by side along the central axis of the cavity, the at least two transmission members are respectively and fixedly connected with the second connecting members of the at least two guiding structures one by one, and the balancing assembly further includes a second fixing member fixedly connected with the first connecting members of the at least two guiding structures.

In some embodiments, the balance weight and the transmission member are juxtaposed in a direction of a central axis of the cavity.

In some embodiments, the balance assembly further includes a connecting plate fixedly connected to one side of the transmission member, and the balance weight is mounted on the connecting plate and is capable of moving in a radial direction of the chamber relative to the connecting plate.

In some embodiments, the connecting plate is formed with a mounting hole, the weight is formed with a mounting post, the mounting post is engaged with the mounting hole, and the mounting post is movable within the mounting hole so that the weight can move relative to the connecting plate in a radial direction of the chamber.

In some embodiments, the power component includes a driving member and a rotating member, the driving member is fixedly connected to the balance body, the rotating member is connected to the driving member and the transmission member, and the driving member is configured to drive the rotating member to rotate so as to drive the transmission member to rotate in the chamber;

the balance block is connected to one side of the transmission piece, the driving piece is arranged on one side of the transmission piece, which is back to back with the balance block, and the balance block, the transmission piece and the driving piece are sequentially arranged in the direction of the central axis of the cavity.

In some embodiments, the number of the transmission members, the balance weight, and the power component is two, the two transmission members are concentrically disposed in the cavity, the two balance weights are respectively and fixedly connected to the two transmission members, one of the power components is used to drive one of the transmission members to rotate, and the other power component is used to drive the other transmission member to rotate.

In some embodiments, the two transmission members include a first transmission member and a second transmission member, the first transmission member is closer to the central axis of the chamber than the second transmission member, a first tooth portion is formed on a side of the first transmission member facing away from the central axis of the chamber, a second tooth portion is formed on a side of the second transmission member facing toward the central axis of the chamber, the two power components include a first gear and a second gear, both of the first gear and the second gear are located between the first transmission member and the second transmission member, the first gear is engaged with the first tooth portion, and the second gear is engaged with the second tooth portion.

In some embodiments, the balance body includes a first ring member and a second ring member connected together, wherein one of the transmission members is rotatably connected to the first ring member and the other transmission member is rotatably connected to the second ring member.

In some embodiments, the first ring body and the second ring body each define an annular groove, one of the transmission members is disposed in the annular groove of the first ring body and is rotatable therein, and the other transmission member is disposed in the annular groove of the second ring body and is also rotatable therein.

In some embodiments, the two balancing masses are located on the same circumference centered on the central axis of the chamber.

In some embodiments, the weight includes a body and a support structure, the support structure is disposed on the body, the body is fixedly connected to the transmission member, and the support structure is supported on an inner wall of the chamber.

The utility model discloses embodiment's a domestic appliance, include:

a first cavity;

the first cavity is rotatably connected with the second cavity; and

the balance assembly of any preceding embodiment, wherein the balance body is mounted to the first cavity.

In the household appliance, the transmission part is fixedly connected with the balance block, and the power part is arranged on the fixed balance block and can drive the transmission part to rotate so as to drive the balance block to rotate in the cavity. Therefore, the power component is fixed relative to the balance body and does not participate in movement along with the balance block, and the power component is not influenced by centrifugal force when the driving transmission piece rotates to drive the balance block to rotate, so that the power component and the transmission piece can smoothly drive the transmission piece to move in the high-speed rotating process of the cavity of the household appliance to drive the balance block to rotate.

Additional aspects and advantages of embodiments 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 embodiments of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a household appliance according to an embodiment of the present invention;

fig. 2 is a partially exploded schematic view of a first chamber and counterbalance assembly according to an embodiment of the present invention;

FIG. 3 is an exploded schematic view of a balancing assembly according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a portion of a balancing assembly according to an embodiment of the present invention;

FIG. 5 is another schematic structural view of a portion of a balancing assembly according to an embodiment of the present invention;

FIG. 6 is a schematic view of another portion of a balancing assembly according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a guide structure of a balancing assembly according to an embodiment of the present invention;

FIG. 8 is another exploded schematic view of a counterbalance assembly in accordance with an embodiment of the present invention;

fig. 9 is a schematic structural view of a further portion of a balancing assembly according to an embodiment of the present invention;

FIG. 10 is a schematic view of a further portion of a balancing assembly according to an embodiment of the present invention;

fig. 11 is a schematic structural view of a further portion of a balancing assembly according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a further portion of a balancing assembly according to an embodiment of the present invention;

fig. 13 is an exploded schematic view of a partial structure of a balancing assembly according to an embodiment of the present invention;

fig. 14 is a schematic structural view of a further portion of a balancing assembly according to an embodiment of the present invention;

FIG. 15 is a further partially exploded schematic view of a counterbalance assembly in accordance with an embodiment of the present invention;

fig. 16 is a schematic structural view of a balance weight of the balance assembly according to the embodiment of the present invention;

fig. 17 is an exploded view of a balance weight of a balance assembly according to an embodiment of the present invention.

Description of the main element symbols:

a household appliance 1000;

the balance assembly 100, the balance body 10, the first ring body 11, the second ring body 12, the cavity 13, the inner wall 131, the balance weight 20, the body 21, the support structure 22, the roller 221, the bearing 2211, the vibration reduction piece 2212, the fixed shaft 222, the mounting post 23, the transmission piece 30, the tooth portion 301, the first transmission piece 31, the first tooth portion 311, the second transmission piece 32, the second tooth portion 321, the power part 40, the driving piece 41, the rotating piece 42, the first gear 421, the second gear 422, the guide structure 50, the first connecting piece 51, the second connecting piece 52, the rolling piece 53, the first fixing piece 60, the second fixing piece 70, the connecting plate 80 and the mounting hole 81;

the structure comprises a first cavity 200, a first end 201, a second end 202, a second cavity 300, a mounting plate 400 and a fixing frame 500.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The disclosure of the present invention provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 3, a balance assembly 100 according to an embodiment of the present invention may be used in a household appliance 1000. The home appliance 1000 includes a balancing assembly 100, a first cavity 200 and a second cavity 300.

The first chamber 200 is rotatably connected to the second chamber 300, and the first chamber 200 may be used to place a load. The balancing assembly 100 includes a balancing body 10 and a balancing mass 20. The balance body 10 is installed in the first chamber 200. An annular chamber 13 is provided in the balance body 10, and a balance weight 20 is located in the chamber 13. The counterweight 20 is able to rotate within the chamber 13 about the central axis Y of the chamber 13. The home appliance 1000 may be a laundry treating appliance such as a washing machine, a dryer, or other home appliances 1000 having the first cavity 200 capable of rotating. The load can be clothes, quilts and other objects needing to be cleaned.

It can be understood that in the embodiment shown in fig. 1, the first cavity 200 is rotatably located in the second cavity 300, when the household appliance 1000 is operated, the first cavity 200 rotates in the second cavity 300, the load in the first cavity 200 is easily distributed unevenly, and there is an eccentricity, for example, when the laundry machine dehydrates the laundry, the uneven distribution of the laundry is easily caused to the eccentricity of the first cavity 200 when the first cavity 200 rotates. Thus, when the eccentric first cavity 200 is rotated at a high speed, the home appliance 1000 may generate a large vibration. The balance body 10 is fixedly connected to the first chamber 200 and rotates together with the first chamber 200. Therefore, the eccentric mass when the first chamber 200 rotates can be offset or reduced by controlling the movement of the balance weight 20 in the balance weight 10 by means of the self-gravity and centripetal force of the balance weight 20, and thus the vibration of the home appliance 1000 can be reduced.

It is understood that in other embodiments, the first cavity 200 and the second cavity 300 may be connected in other manners, and are not limited to the first cavity 200 being rotatably located in the second cavity 300, as long as the first cavity 200 can rotate relative to the second cavity 300, and is not limited thereto.

In an example of the present invention, the household appliance 1000 is a washing machine, which can be used for washing clothes, and the clothes can be placed in the first cavity 200. The first chamber 200 is a washing chamber (inner tub), the second chamber 300 is a water chamber (outer tub), the water chamber and the washing chamber are cylindrical, the washing chamber is rotatably disposed in the water chamber, and the water chamber and the washing chamber are disposed in a housing (not shown) of the household appliance 1000. The washing chamber may have a rotation axis X arranged horizontally, obliquely or vertically. That is, the axis of rotation X of the washing chamber is parallel, inclined or perpendicular to the horizontal plane. It will be appreciated that one or more balance bodies 10 may be provided at any position of the washing chamber, and the balance bodies 10 rotate with the rotation of the washing chamber. The central axis Y of the chamber 13 is parallel to or coincides with the rotation axis X of the washing chamber, i.e. the balancing body 10 may be arranged coaxially with the washing chamber or eccentrically with respect to the washing chamber. The balance 10 may also be spirally arranged on the washing chamber.

In addition, referring to fig. 2, in order to further reduce the transmission of the vibration inside the washing machine to the outside, the water containing cavity may be connected to the mounting plate 400 through a vibration damping structure, and the mounting plate 400 may be fixed to the bottom plate of the housing or may be the bottom plate of the housing. The vibration damping structure can adopt structural components such as springs, hydraulic pressure and the like to reduce the transmission of vibration.

Referring to fig. 1 and 2, the household appliance 1000 is a drum washing machine. The first cavity 200 comprises a first end 201 and a second end 202 along the axis of rotation X. The balance body 10 is connected to the first end 201 and the second end 202, respectively. At least one weight 20, for example, one or two or more than two, is provided in the chamber 13 of each weight 10. Preferably, two balance weights 20 are arranged in the chamber 13 of the balance body 10, and the initial positions of the two balance weights 20 are symmetrically arranged, so that the arrangement of the two balance weights 20 does not introduce additional vibration into the first cavity 200.

Specifically, the second end 202 of the first cavity 200 is fixedly connected to the fixing frame 500, the fixing frame 500 may be connected to a rotating shaft (not shown), and a power device (not shown) of the household appliance 1000 may be connected to the rotating shaft to drive the first cavity 200 to rotate. In the embodiment shown in fig. 2, the first end 201 of the first cavity 200 is a front end, and the second end 202 is a rear end, and the front end may refer to an end facing a user. In other embodiments, the first end 201 or the second end 202 of the first cavity 200 is provided with the balance body 10, or the balance body 10 is provided between the first end 201 and the second end 202. The mount 500 may be a tripod.

In the embodiment of the present invention, the balance body 10 is in a ring shape, and the balance body 10 may be called a balance ring. It is understood that in other embodiments, the balancing body 10 may have other shapes, such as a plate shape, a square ring shape, an elliptical ring shape, etc., and is not particularly limited thereto.

Referring to fig. 1 and 3, the balance body 10 includes a first ring body 11 and a second ring body 12, the first ring body 11 and the second ring body 12 are connected to form a sealed chamber 13, and a balance weight 20 is disposed in the chamber 13. Since the balance body 10 is annular and the chamber 13 is also annular, the balance weight 20 can rotate around the central axis Y of the chamber 13 in the chamber 13 of the balance body 10, i.e. can move circularly in the chamber 13. In the illustrated embodiment, the first ring body 11 may be referred to as a gimbal body and the second ring body 12 may be referred to as an end cap. It should be noted that the central axis Y of the chamber 13 can be understood as an axis passing through the geometric center of the annular chamber 13.

Referring to fig. 3-5, in the present embodiment, the balance assembly 100 further includes a transmission member 30 and a power member 40.

The power component 40 is fixedly connected with the balance body 10, the balance block 20 is connected with the transmission member 30, and the transmission member 30 is arranged in the cavity 13 and can rotate around the central axis Y of the cavity 13 in the cavity 13. The power component 40 is configured to drive the transmission member 30 to rotate in the chamber 13, thereby rotating the balance weight 20 in the chamber 13 about the central axis Y. Therefore, in the process of controlling the movement of the balance weight 20, the power component 40 does not move along with the movement of the balance weight 20, and the power supply mode of the power component 40 does not need an electric brush, but can adopt a direct wire power supply mode, thereby greatly improving the power supply reliability and stability. It should be noted that, in the embodiment of the present invention, the balance weight 20 may be directly fixedly mounted on the transmission member 30, or may be mounted on the transmission member 30 through other elements. Furthermore, the utility model discloses an in the embodiment, balancing piece 20 also can set to can move certain distance relative to driving medium 30, only need when driving medium 30 rotates can drive balancing piece 20 and move together. In the embodiment shown in fig. 3-5, the balance weight 20 can be directly fixed on the transmission member 30 by means of screws, it is understood that in other embodiments, the balance weight 20 can be fixed on the transmission member 20 by other connecting elements, the balance weight 20 can move relative to the connecting elements, and the transmission member 30 can drive the balance weight to move by the connecting elements.

Specifically, referring to fig. 3 to fig. 6, in the present embodiment, the power component 40 includes a driving component 41 and a rotating component 42, the driving component 41 is fixedly connected to the balance body 10, the rotating component 42 is connected to the driving component 41 and the transmission component 30, and the driving component 41 is configured to drive the rotating component 42 to rotate to drive the transmission component 30 to rotate in the cavity 13.

It should be noted that, in this context, the fixed connection may be understood as that the two are fixedly connected together directly or fixedly connected together through other components, for example, in this embodiment, the fixed connection between the driving member 41 and the balance body 10 may be that the driving member 41 is fixedly mounted on the balance body 10 directly or fixedly mounted on the balance body 10 through other components, and the two are relatively fixed.

The driving member 41 may be a motor, and the driving member 41 may be electrically connected to a balance control board (not shown), and the balance control board is provided with a balance controller for controlling the motor to drive the transmission member 30 to rotate so as to drive the balance weight 20 to move circumferentially around the central axis Y in the cavity 13 of the balance body 10. In one embodiment, the rotating member 42 includes a gear and the motor shaft of the motor is connected to the gear. The transmission member 30 is provided with a toothed portion 301 on a side thereof close to the central axis Y of the chamber 13, and the gear is engaged with the toothed portion 301.

In such an embodiment, the transmission member 30 may be a gear ring with an inner annular tooth portion 301, and the motor drives the gear ring to rotate around the central axis Y of the cavity 13 in the cavity 13 of the balancing body 10 through a gear, so as to drive the balancing mass 20 to rotate around the central axis Y of the cavity 13 in the cavity 13.

It can be understood that the power component 40 drives the transmission member 30 by meshing the gear with the tooth portion 301, the meshing has the characteristics of high precision and stable transmission, there is no slipping risk, and the gear is meshed with the tooth portion 301 arranged on one side close to the central axis Y of the cavity 13 on the transmission member 30, so that it is possible to avoid resistance generated by over-tight meshing due to centrifugal force generated when the first cavity 200 of the household appliance 1000 rotates at high speed, thereby ensuring that the balance weight 20 stably moves in the cavity 13 when the first cavity 200 rotates at high speed.

In the illustrated embodiment, the number of gears that mesh with the tooth portion 301 is single. Therefore, only one annular tooth part 301 needs to be arranged on the inner wall of the transmission piece 30, and the gear and the tooth part 301 are single, so that the cost can be saved. In other embodiments, the number of gears may be two or other numbers, and the number of teeth 301 may be set according to actual needs.

In addition, in the illustrated embodiment, the power unit 40 may further include a speed adjusting mechanism 43, the speed adjusting mechanism 43 connects the rotating member 42 with an output shaft of the driving member 41, and the speed adjusting mechanism 43 may adjust a transmission ratio between the driving member 31 and the rotating member 42 to adjust the rotation speed of the rotating member 42. Specifically, the governor mechanism 43 can include at least two gears connected, and the at least two gears can include a duplicate gear.

In some embodiments, the transmission member 30 is annular, and the transmission member 30 has a tooth portion 301 formed on the inner side thereof, and the outer side of the transmission member 30 abuts against the inner wall 131 of the chamber 13.

In this way, the interference of the outer side of the transmission member 30 against the inner wall 131 of the cavity 30 allows the transmission member 30 to stably rotate in the cavity 13.

Further, in such embodiments, the counterbalance assembly 100 may further include a rolling member that may be disposed between the inner wall 13 of the chamber 13 and the outside of the drive member 30, the rolling member rotating between the inner wall 131 of the chamber 13 and the outside of the drive member 30 when the drive member 30 rotates.

Thus, the arrangement of the rolling member can reduce the friction between the transmission member 30 and the balance body 10, and improve the stability of rotation and bear the centrifugal force generated when the transmission member 30 rotates. Specifically, in such an embodiment, the number of the rolling members is plural, and the plural rolling members are uniformly spaced along the circumferential direction of the transmission member 30, so that the centrifugal force of the transmission member 30 can be uniformly borne to ensure stable rotation of the transmission member 30

Referring to fig. 3-7, in some embodiments, the balancing assembly 100 may further include a guiding structure 50, the guiding structure 50 connects the balancing body 10 and the transmission member 30, and the guiding structure 50 is configured to guide the transmission member 30 to rotate around the central axis Y of the chamber 13 in the chamber 13. In this way, the guiding structure 50 can guide the rotation of the transmission member 30 and the balance weight 20, so that the transmission member 30 and the balance weight 20 can stably and smoothly make circular motion around the central axis Y of the cavity 13 in the cavity 13, thereby achieving the purpose of balancing the eccentric mass.

Referring to fig. 3-7, the guiding structure 50 includes a first connecting member 51 and a second connecting member 52, the first connecting member 51 is disposed in the chamber 13 and is fixedly connected to the balance body 10.

In the illustrated embodiment, the driving element 41 of the power element 40 is fixedly connected with the first connecting element 51 so as to achieve the fixed connection with the balance body 10, specifically, the power element 40 is fixedly mounted on the first connecting element 51 through the first fixing element 60, the first fixing element 60 may be in a plate shape, the driving element 41 of the power element 40 may be mounted at one end of one side of the first fixing element 60, and the first connecting element 51 may be mounted at the other end of the other side of the first fixing element 60, that is, the driving element 41 and the first connecting element 51 are respectively disposed at two opposite sides of the first fixing element 60. In this way, the stress condition in the first fixing member 60 can be dispersed, and the reliability of the first fixing member 60 can be ensured. In addition, the driving member 41 is fixed to the first connecting member 51 by the first fixing member 60, so that the driving member 41 can be easily attached and detached.

It is understood that in other embodiments, the driving member 41 may be fixedly mounted on the first connecting member 51 or the balance body 10 directly by a screw or other fixing element, and particularly, without limitation, it is only necessary to relatively fix the driving member 41 and the first connecting member 51 and the balance body 10.

Further, referring to fig. 3-7, in such an embodiment, the second connecting member 52 is disposed in the first connecting member 51 and rotatably connected to the first connecting member 51, and the transmission member 30 is fixedly connected to the second connecting member 52. When the transmission member 30 rotates, the transmission member 30 drives the second connection member 52 to rotate relative to the first connection member 51. In this way, the rotational connection of the transmission member 30 and the balance body 10 is achieved by the two coupling members, the frictional force can be effectively reduced to enable the transmission member 30 to smoothly rotate, and the second coupling member 52 can guide the rotation of the transmission member 30 and the balance weight 20 to enable the movement thereof in a predetermined direction, i.e., the circumferential direction of the chamber 13. Meanwhile, the first and

second connectors

51 and 52 can bear the centrifugal force of the balance weight 20 when rotating at a high speed. In the embodiment shown in fig. 5, the transmission member 30 is provided on the inner wall 131 of the second connecting member 52. It is understood that in other embodiments, the transmission member may be disposed at other positions of the second connecting member 52, and is not limited thereto.

Still further, referring to fig. 3-7, in the illustrated embodiment, the guiding structure 50 may further include a rolling member 53, the rolling member 53 is disposed between the first connecting member 51 and the second connecting member 52, and the rolling member 53 rolls between the first connecting member 51 and the second connecting member 52 when the second connecting member 52 rotates relative to the first connecting member 51.

Thus, the second connecting member 52 is rotatably connected to the first connecting member 51 via the rolling member 53, when the second connecting member 52 rotates, the rolling member 53 correspondingly rolls between the first connecting member 51 and the second connecting member 52, and the friction force generated by the rolling friction is small, so that when the first connecting member 51, the second connecting member 52 and the rolling member 53 bear the centrifugal force of the balance weight 20, the small friction force can reduce the loss of the whole balance weight 20 and the transmission member 30 during high-speed rotation and improve the high-speed movement capability.

In one example, the guide structure 50 includes a bearing, and the first connector 51 may be an outer race of the bearing and the second connector 52 may be an inner race of the bearing. The rolling elements 53 may be balls or rollers of a bearing, for example tapered rollers, that is to say the bearing may be of the ball bearing or tapered roller bearing type or the like. It will be appreciated that in such embodiments, the use of bearings to connect the transmission member 30 and the counterweight 10 to guide the movement of the transmission member 30 and the counterweight 20 may improve the stability of the movement of the transmission member 30 and the counterweight 20. Meanwhile, the bearing is used for bearing the centrifugal force of the balance weight 20, and the self friction force of the bearing is small, so that the energy consumption of the whole balance assembly 100 can be reduced, and the high-speed movement capability can be improved.

It will be appreciated that in other embodiments, the guide structure 50 may omit the rolling member 53 and the first and

second links

51 and 52 are smoothly rotationally coupled. For example, the first connecting member 51 and the second connecting member 52 may be connected to form a circular guide rail, and the two members are smoothly connected and can rotate relatively.

Referring to fig. 3 and 4, in one example, the number of the guiding structures 50 may be at least two, the number of the transmission members 30 is at least two, the at least two guiding structures 50 are arranged in parallel along the central axis Y of the chamber 13, and the at least two transmission members 30 are respectively fixedly connected to the second connecting members 52 of the at least two guiding structures 50 one by one, that is, the two transmission members 30 are also arranged in parallel along the central axis Y of the chamber 13. The balancing assembly 100 may further include a second fixing member 70, and the second fixing member 70 fixedly connects the first connecting members 51 of the at least two guide structures 50.

In this way, each transmission member 30 can drive the balance weight 20 to a plurality of different positions under the driving of the corresponding power component 40, so as to achieve the purpose of adjusting the eccentricity by using a plurality of balance weights 20 to achieve the balance. Each transmission member 30 is provided with a guide structure 50 for guiding so that each transmission member 30 can smoothly and stably rotate. Meanwhile, the second fixing member 70 is used for connecting the first connecting members 51 of the two guide structures 50, so that on one hand, the two guide structures can be stably connected, and on the other hand, when one of the guide structures 50 is damaged, the guide structures 50 and other parts can be replaced in a mode of detaching the second fixing member 70.

Specifically, in the illustrated embodiment, the number of the guide structure 50, the transmission member 30, and the power member 40 is two in one chamber 13. The toothed portion 301 of each transmission member 30 is engaged with the rotary member 42 of the corresponding power unit 40. It is understood that in other embodiments, the number of the guiding structure 50, the transmission member 30 and the power member 40 may be more than two, or one, and is not limited herein.

Referring to fig. 4, 8 and 9, in some embodiments, the balance weight 20 is disposed in parallel with the transmission member 30 along the central axis Y of the chamber 13.

Thus, the centrifugal force generated when the balance weight 20 circularly moves around the central axis Y of the cavity 13 in the cavity 13 does not directly act on the transmission member 30, so that the balance weight 20 can smoothly rotate around the central axis Y of the cavity 13 when the first cavity 200 of the household appliance 1000 rotates at a high speed.

Further, in such an embodiment, the balance weight 20 is connected to one side of the transmission member 30, the driving member 41 is disposed on the opposite side of the transmission member 30 from the balance weight 20, and the balance weight 20, the transmission member 30 and the driving member 41 are sequentially arranged along the central axis Y of the chamber 13.

Thus, the balance weight 20 and the driving member 41 are respectively disposed on both sides of the driving member 30, and a space in the radial direction of the balance assembly 100 can be saved.

Referring to fig. 8-10, in some embodiments, the number of the transmission members 30, the balance weights 20 and the power members 40 may be two, two transmission members 30 are concentrically disposed in the cavity 13, two balance weights 20 are respectively fixedly connected to the two transmission members 30, one of the power members 40 is used for driving one of the transmission members 30 to rotate, and the other power member 40 is used for driving the other transmission member 30 to rotate.

Thus, the two power components 40 respectively drive the two concentric transmission members 30 to rotate so as to respectively drive the two balance weights 20 to move, so that the eccentric balancing capability of the balancing assembly 100 can be improved, for example, the two power components 40 drive the balance weights 20 to move to different positions to jointly adjust the balance, and the adjusting means is more.

Specifically, referring to fig. 10 to 15, the two transmission members 30 include a first transmission member 31 and a second transmission member 32, the first transmission member 31 is closer to the central axis Y of the chamber 13 than the second transmission member 32, a first tooth portion 311 is formed on a side of the first transmission member 31 away from the central axis Y of the chamber 13, a second tooth portion 321 is formed on a side of the second transmission member 32 facing the central axis Y of the chamber 13, the two power components 40 include a first gear 421 and a second gear 422, the first gear 421 and the second gear 422 are both located between the first transmission member 31 and the second transmission member 32, the first gear 421 is engaged with the first tooth portion 311, and the second gear 422 is engaged with the second tooth portion 321.

In this way, the two power components 40 can respectively drive the first transmission member 31 and the second transmission member 32 to rotate through the first gear 421 and the second gear 422, so as to drive the two balance weights 20 to rotate around the central axis Y of the chamber 13 in the chamber 13 to adjust the balance. Meanwhile, the first gear 421 and the second gear 422 are both located between the first transmission member 31 and the second transmission member 32, so that the occupied space of the power component 40 in the radial direction of the balance body 10 can be effectively reduced, and the balance assembly 100 is more compact in structure and can be made smaller in size to save cost.

In addition, referring to fig. 10 to 15, in the illustrated embodiment, the two balance weights 20 are located on the same circumference with the central axis X of the chamber 13 as the center line.

In this manner, both of the counterbalances 20 move on the same circumference, which may reduce the space in the radial direction of the counterbalance assembly 100.

Referring to fig. 13, in some embodiments, the balance assembly 100 further includes a connecting plate 80, the connecting plate 80 is fixedly connected to one side of the transmission member 30, the balance weight 20 is mounted on the connecting plate 80, and the balance weight 20 can move in a radial direction of the chamber 13 relative to the connecting plate 80.

Thus, when the transmission member 30 drives the balance weight 20 to move, the balance weight 20 can move for a certain buffering distance relative to the connecting plate 80 under the action of the centrifugal force, so that the centrifugal force is buffered to prevent the centrifugal force from directly acting on the transmission member 30 to influence the stability of the movement.

Further, referring to fig. 13, 16 and 17, in such an embodiment, the connecting plate 80 may be formed with a mounting hole 81, the counterweight 20 may be formed with a mounting post 23, the mounting post 23 is engaged with the mounting hole 81, and the mounting post 23 is movable within the mounting hole 81 so that the counterweight 20 can move relative to the connecting plate 80 in a radial direction of the chamber 13.

So, through the cooperation of erection column 23 and mounting hole 81, can make connecting plate 80 accessible both cooperation drive balancing piece 20 follow driving medium 30 and move together on the one hand, on the other hand, erection column 23 can be along the radial motion of cavity 13 in mounting hole 81 to cushion centrifugal force, prevent that centrifugal force from directly acting on driving medium 30 or reduce the centrifugal force that acts on driving medium 30, simultaneously, both's cooperation mode is comparatively simple, makes things convenient for the dismouting.

Specifically, referring to fig. 13, in the present embodiment, the mounting hole 81 may be a waist-shaped hole, and the waist-shaped hole is opened along the radial direction of the chamber 13, so that, on one hand, the connecting plate 80 can drive the balance weight 20 to move through the waist-shaped hole, and on the other hand, the balance weight 20 can also move along the waist-shaped hole under the action of centrifugal force. It will be appreciated that in other embodiments, the mounting holes 81 may be other shapes, such as elliptical holes, etc.

Can be fixedly mounted on the transmission member 30 by means of a connection plate 80. For example, referring to fig. 13 and 15, in the illustrated embodiment, two balance weights 20 are fixedly mounted on the first transmission member 31 and the second transmission member 32 through the connection plates 80, respectively. Of course, in other embodiments, the balance weight 20 and the transmission member 30 may be directly fixedly connected together, such as welded together or directly fixed together by screws.

Further, referring to fig. 8, in such an embodiment, one of the two transmission members 30 is rotatably connected to the first ring body 11, and the other of the two transmission members 30 is rotatably connected to the second ring body 12. That is, one of the first transmission member 31 and the second transmission member 31 is rotatably connected to the first ring member 11, and the other is rotatably connected to the second ring member 12

In particular, in the embodiment shown in fig. 8, the first transmission member 31 is rotationally connected to the second ring body 12, and the second transmission member 32 is rotationally connected to the first ring body 11. The second ring body 12 comprises a plate part 121 and a convex ring part 122 convexly arranged on the plate part 121, the first ring body 11 and the second ring body 12 are connected in a matching mode to form the balance body 10, and the plate part 121, the convex ring part 122 and the inner wall of the first ring body 11 of the second ring body 12 jointly form a closed annular chamber 13. The outer peripheral wall of the collar portion 122 and the inner wall of the first ring body 131 serve as two inner walls of the chamber 13 in the radial direction of the chamber 13.

In such an embodiment, the first transmission member 31 and the second ring member 12 may be rotatably connected in such a manner that an annular groove is formed in the outer peripheral wall of the convex ring portion 122 of the second ring member 12, and the first transmission member 31 is disposed in the annular groove and is rotatable therein. It will be appreciated that in such embodiments, the second transmission member 32 may be rotationally connected to the first ring body 11 in the same manner or in a different manner than the first transmission member 31 and the second ring body 12, for example, an annular groove may be formed in the inner wall of the first ring body 11, and the second transmission member 32 may be disposed in and rotatable in the annular groove.

Furthermore, it is understood that, in order to reduce the friction between the first transmission member 31 and the second ring body 12 when rotating relatively and reduce the friction between the second transmission member 32 and the first ring body 11, in some embodiments, balls may be further disposed between the first transmission member 31 and the second ring body 12, and when the first transmission member 31 rotates relatively to the second ring body 12, the balls rotate therebetween, and the first transmission member 31 and the second ring body 12 realize rolling friction through the balls. Balls can also be arranged between the second transmission piece 32 and the first ring body 11, when the second transmission piece 32 rotates relative to the first ring body 11, the balls rotate between the second transmission piece 32 and the first ring body 12, and rolling friction is realized between the second transmission piece 32 and the first ring body 12 through the balls.

Of course, in some embodiments, the first transmission member 31 and the second ring body 12 are rotatably connected, and the second transmission member 32 and the first ring body 11 are rotatably connected, by connecting the guide structure 50 (such as the above-mentioned bearing) in the above-mentioned embodiments, so as to realize the rotational connection between the first transmission member 31 and the second ring body 12 and the rotational connection between the second transmission member 32 and the second ring body 12, so that the friction between the two can be effectively reduced by using the above-mentioned guide structure 50 to connect, thereby reducing the energy loss to enable the first transmission member 31 to rotate smoothly at a high speed. The specific structure of the guide structure 50 can be understood with reference to the above description, and will not be repeated herein.

That is, in the embodiment shown in fig. 8 to 10, the first transmission member 31 and the second ring body 12 of the balance body 10 can be rotatably connected through the above-mentioned guiding structure 50, and the second transmission member 32 and the first ring body 11 of the balance body 10 can also be rotatably connected through the above-mentioned guiding structure 50, which is not limited herein.

Referring to fig. 16, in some embodiments, the counterbalance 20 may include a body 21 and a support structure 22, the body 21 is fixedly connected to the transmission member 30, the support structure 22 is disposed on the body 21, and the support structure 22 is supported on the inner wall 131 of the chamber 13. In this manner, the wobbling of the counterweight 20 as the chamber 13 moves is reduced by the contact of the support structure 22 with the inner wall 131.

Specifically, the balance weight 20 is supported on the inner wall 131 of the chamber 13 through the support structure 22, and during the movement of the balance weight 20 in the chamber 13, the inner wall 131 of the chamber 13 can bear the centrifugal action of the balance weight 20, so as to avoid the situation that the balance weight 20 shakes during the movement.

Referring to fig. 17, the weight 20 may be in rolling contact with the inner wall 131 of the chamber 13, and specifically, the supporting structure 22 may include a roller 221, the roller 221 is rotatably disposed on the body 21, and the roller 221 contacts the inner wall 131 of the chamber 13. In the case where the weight 20 moves, the roller 221 can rotate relative to the body 21. It will be appreciated that the roller 221 acts to carry the entire weight 20.

Specifically, the roller 221 may be connected with the body 22 by a fixing shaft 222. The fixing shaft 222 is fixedly connected with the body 21 in a metal welding manner, a screw connection manner, a snap connection manner or an interference fit manner, which is not limited in detail herein. The roller 221 is inserted through the fixing shaft 222, and the roller 221 is sleeved on the fixing shaft 222. The body 21 includes a first side 211 and a second side 212 opposite to each other, wherein rollers 221 are disposed at both ends of the first side 211 and both sides of the second side 212, and when the driving member 41 drives the driving member 30 to drive the balance weight 20 to move, the rollers 221 rotate around the fixed shaft 222 and rotate relative to the body 21, so that the balance weight 20 moves smoothly in the chamber 13. In addition, it can be understood that the balance weight 20 is sealed in the chamber 13 of the balance body 10, and when the balance weight 20 moves, the balance weight 20 may rub against the inner wall 131 of the chamber 13. The arrangement of the roller 221 on the body 21 can effectively reduce the friction between the weight 20 and the inner wall 131 of the chamber 13. It is understood that in other embodiments, the weight 20 may be in sliding contact with the inner wall 131 of the chamber 13, and in the case of sliding contact, the weight 20 and the inner wall 131 of the chamber 13 may increase the amount of lubrication to further reduce the friction. The contact between the weight 20 and the inner wall 131 of the chamber 13 is not particularly limited, and the friction between the weight 20 and the inner wall 131 of the chamber 13 may be reduced.

Further, in some embodiments, the roller 221 may include a bearing 2211 and a vibration absorbing member 2212, the bearing 2211 is rotatably disposed on the body 21, specifically, the bearing 2211 is disposed on the fixing shaft 222, the vibration absorbing member 2212 is disposed on the bearing 2211, and the bearing 2211 is supported on the inner wall 131 of the cavity 13 through the vibration absorbing member 2212. Thus, when the weight 20 moves, the vibration reducing member 2212 can reduce the vibration generated between the roller 221 and the inner wall 131 of the chamber 13. Specifically, the vibration absorbing member 2212 has elasticity. In one example, the vibration absorbing member 2212 may be a rubber ring, so that when the balance weight 20 is subjected to centrifugal force, the vibration absorbing member 2212 may be deformed to abut against the inner wall 131 of the chamber 13 to reduce vibration between the roller 221 and the inner wall 131 of the chamber 13. In another example, the vibration absorbing member 2212 may be a silicone ring or other elastic member. It will be appreciated that in some embodiments, the roller 221 may also omit the vibration reduction 2212, with the bearing 2211 supported directly on the inner wall 131 of the chamber 13. It is understood that in other embodiments, the roller 221 may be a roller with other structures, and is not limited to the bearing 2211.

In addition, referring to fig. 13 and 17, in the illustrated embodiment, the number of the mounting holes 18 is 3, and the number of the mounting posts 23 is also 3, wherein one mounting post 23 is directly formed on the body 21 or mounted on the body 21. The other two mounting posts 23 are directly formed at one end of the fixing shaft 222, so that the mounting posts 23 can be directly formed by the fixing shaft 222 without additionally providing the mounting posts 23.

In addition, as can be seen from fig. 3 to 6, in the embodiment shown in fig. 3 to 6, the weight 20 is a plate-shaped mass. It is understood that in some embodiments, the weight 20 of the embodiment shown in fig. 3-6 may also be configured as the weight 20 of fig. 11-16, and is not limited thereto. The material of the weight 10 may be metal or nonmetal, and the nonmetal may include plastic, ceramic, etc. And is not particularly limited herein.

To sum up, the present invention provides a balance assembly 100 for a household appliance 1000. The balancing assembly 100 includes a balancing body 10, a balancing weight 20, a transmission member 30, and a power member 40. An annular chamber 13 is formed in the balance body 10, and the transmission member 30 is disposed in the chamber 13 and can rotate around a central axis Y of the chamber 13 in the chamber 13. The balance weight 20 is located in the cavity 13 and is fixedly connected with the transmission member 30. The power component 40 is fixedly connected to the balance body 10, and the power component 40 is configured to drive the transmission member 30 to rotate in the cavity 13, so as to drive the balance body 20 to rotate in the cavity 13 around the central axis Y of the cavity 13.

The utility model discloses a household appliance 1000, household appliance 100 include in first cavity 200, second cavity 300 and the above-mentioned embodiment balance assembly 100. The first chamber 200 is rotatably connected to the second chamber 300, and the balance body 10 of the balance assembly 100 is mounted in the first chamber 200.

In the balance assembly 100 and the household appliance 1000 of the above embodiment, the transmission member 30 is fixedly connected to the balance weight 20, and the power component 40 is fixed on the balance weight 10 and can drive the transmission member 30 to rotate so as to drive the balance weight 20 to rotate in the cavity 13. Thus, the power component 40 is fixed relative to the balance weight 10, and does not participate in the movement along with the balance weight 20, and the power component 40 is not affected by the centrifugal force when the driving transmission member 30 rotates to drive the balance weight 20 to rotate, so that the power component 40 and the transmission member 30 can smoothly drive the transmission member 30 to move in the process of high-speed rotation of the cavity of the household appliance 1000, thereby driving the balance weight 20 to rotate.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like 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 present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. 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: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A balancing assembly for a household appliance, characterized in that it comprises:

the balance body is internally provided with an annular cavity;

the power component is fixedly connected with the balance body and is configured to drive the transmission piece to rotate in the cavity, so that the balance body is driven to rotate around the central axis of the cavity in the cavity.

2. The balance assembly of claim 1, wherein the power component comprises a driving member fixedly connected to the balance body and a rotating member connected to the driving member and the transmission member, the driving member configured to drive the rotating member to rotate the transmission member within the chamber.

3. The counterbalance assembly of claim 2, wherein the drive member is provided with a toothed portion on a side thereof adjacent the central axis of the chamber, and the rotating member includes a gear that meshes with the toothed portion.

4. A balancing assembly according to claim 3, wherein the transmission member is annular, the toothed portion being formed on an inner side of the transmission member, an outer side of the transmission member abutting against an inner wall of the chamber.

5. The counterbalance assembly of claim 4, wherein the counterbalance assembly includes a roller member disposed between an inner wall of the chamber and an outer side of the drive member, the roller member rotating between the inner wall of the chamber and the outer side of the drive member when the drive member rotates.

6. The counterbalance assembly of claim 1, further comprising a guide structure connecting the counterbalance body and the drive member, the guide structure configured to guide the drive member for rotation within the chamber.

7. The balance assembly of claim 6, wherein the guide structure comprises a first connector and a second connector, the first connector is disposed in the chamber and fixedly connected to the balance body, the power member is fixedly connected to the first connector, the second connector is disposed in the first connector and rotatably connected to the first connector, the transmission member is fixedly connected to the second connector, and the transmission member rotates to drive the second connector to rotate relative to the first connector.

8. The balance assembly of claim 7, wherein the transmission member is disposed on an inner wall of the second connector.

9. The balance assembly of claim 7, wherein the guide structure comprises a bearing, the first connector is an outer race of the bearing, and the second connector is an inner race of the bearing.

10. The counterbalance assembly of claim 7, further comprising a first securing member, wherein the power member is fixedly coupled to the first coupling member by the first securing member.

11. The balance assembly of claim 7, wherein the number of the guide structures is at least two, the number of the transmission members is at least two, the at least two guide structures are juxtaposed along a central axis of the chamber, the at least two transmission members are fixedly connected to the second connecting members of the at least two guide structures, respectively, the balance assembly further comprises a second fixing member fixedly connected to the first connecting members of the at least two guide structures.

12. The balance assembly of claim 1, wherein the counterbalance mass and the transmission member are juxtaposed along a central axis of the chamber.

13. The balance assembly of claim 12, further comprising a connecting plate fixedly attached to one side of the drive member, wherein the counterbalance mass is mounted on the connecting plate, wherein the counterbalance mass is movable relative to the connecting plate in a radial direction of the chamber.

14. The balance assembly of claim 13, wherein the connecting plate is formed with a mounting hole, and wherein the counterbalance mass is formed with a mounting post that mates with the mounting hole, the mounting post being movable within the mounting hole to enable the counterbalance mass to move relative to the connecting plate in a radial direction of the chamber.

15. The balance assembly of claim 12, wherein the power component comprises a driving member fixedly coupled to the balance mass and a rotating member coupled to the driving member and the transmission member, the driving member configured to drive the rotating member to rotate the transmission member within the chamber;

16. The balance assembly of claim 1, wherein the number of the transmission members, the balance weights, and the power members is two, the two transmission members are concentrically disposed in the chamber, the two balance weights are fixedly connected to the two transmission members, respectively, one of the power members is configured to drive one of the transmission members to rotate, and the other of the power members is configured to drive the other of the transmission members to rotate.

17. The balance assembly of claim 16, wherein the two transmission members include a first transmission member and a second transmission member, the first transmission member being closer to the central axis of the chamber than the second transmission member, a side of the first transmission member facing away from the central axis of the chamber being formed with a first toothed portion, a side of the second transmission member facing toward the central axis of the chamber being formed with a second toothed portion, the two power components including a first gear and a second gear, both the first gear and the second gear being located between the first transmission member and the second transmission member, the first gear being engaged with the first toothed portion, and the second gear being engaged with the second toothed portion.

18. The balance assembly of claim 16, wherein the balance body comprises a first ring and a second ring coupled together, wherein one of the transmission members is rotationally coupled to the first ring and the other of the transmission members is rotationally coupled to the second ring.

19. The balance assembly of claim 18, wherein the first ring and the second ring each define an annular groove, one of the drive members being disposed in and rotatable within the annular groove of the first ring, the other of the drive members being disposed in and rotatable within the annular groove of the second ring.

20. The balance assembly of claim 17, wherein the two counterbalances are located on the same circumference centered on the central axis of the chamber.

21. The balance assembly of claim 1, wherein the counterbalance mass comprises a body and a support structure disposed on the body, the body being fixedly coupled to the drive member, the support structure being supported on an inner wall of the chamber.

22. A household appliance, characterized in that it comprises:

a first cavity;

the first cavity is rotatably connected with the second cavity; and

the balance assembly of any one of claims 1-21, the balance body being mounted to the first cavity.