CN211395022U

CN211395022U - Balance assembly and household appliance

Info

Publication number: CN211395022U
Application number: CN201922500028.2U
Authority: CN
Inventors: 王跃辉; 张肃; 沈靖皓
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: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-01
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a balanced subassembly and domestic appliance. The balancing assembly includes a balancing body and a balancer. The balancing body is used for being installed in a cavity of a household appliance. The balancing body is internally provided with a cavity. The balancer includes a bearing structure and a drive assembly, the drive assembly being disposed on the bearing structure. The drive assembly is adapted to drive the balancer for movement within the chamber, and the bearing structure is in contact with the inner wall of the chamber and is adapted to move along the inner wall of the chamber during movement of the balancer to take up centrifugal forces experienced by the balancer as it moves within the chamber. In the balancing assembly, the bearing structure can bear the action of centrifugal force generated by high-speed rotation of the cavity, so that the phenomenon that the centrifugal force borne by the balancer increases the friction force between the driving assembly and the balancing body is avoided, and the driving assembly can drive the balancer to move in the cavity more easily due to the arrangement of the bearing structure.

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, so that the load in the cavity is easily distributed unevenly, the eccentric condition exists, and the household appliance can generate great vibration. Therefore, the cavity is provided with the balancing body with the built-in balancer, and the eccentric center of the cavity is balanced by the self gravity and centripetal force of the balancer by controlling the movement of the balancer in the balancing body, so that the vibration and noise of the household appliance are reduced.

In the related art, the balancer includes a driving wheel. The movement of the balancer is driven by means of friction between the driving wheel and the balancer body. However, this method is not easy to control the friction force of the driving wheels, and the balancer cannot move easily due to too large friction force or cannot move normally due to slipping of the balancer due to too small friction force.

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 balancing body and balancer, balancing body is used for installing domestic appliance's cavity, be equipped with the cavity in the balancing body, the balancer includes bearing structure and drive assembly, drive assembly establishes bearing structure is last, drive assembly is used for the drive the balancer is in remove in the cavity, bearing structure with the inner wall contact of cavity is used for being in the in-process that the balancer removed, along the inner wall motion of cavity is in order to undertake the balancer is in the centrifugal force effect that receives during the motion in the cavity.

In the balancing assembly, the bearing structure can bear the action of centrifugal force generated by high-speed rotation of the cavity, so that the phenomenon that the centrifugal force borne by the balancer increases the friction force between the driving assembly and the balancing body is avoided, and the driving assembly can drive the balancer to move in the cavity more easily due to the arrangement of the bearing structure.

In some embodiments, the bearing structure includes a bearing plate and rollers rotatably connected to the bearing plate and in contact with the inner wall of the chamber, the drive assembly being mounted on the bearing plate.

In some embodiments, the rolling element includes a bearing and a rotating shaft, the rotating shaft is fixedly connected to the bearing plate, the rotating shaft penetrates through the bearing, and the bearing is sleeved on the rotating shaft.

In some embodiments, the driving assembly includes a driving member and a rotating member, the driving member is connected to the rotating member, and the driving member is configured to drive the rotating member to rotate so as to drive the balancer to move in the chamber.

In some embodiments, an annular connecting member is provided in the chamber, a toothed portion is provided on an inner side of the connecting member, and the rotating member includes a gear engaged with the toothed portion.

In certain embodiments, the drive assembly includes a speed adjustment structure connecting the drive member and the rotational member.

In some embodiments, the speed adjustment structure includes a first stage transmission structure connected to the output shaft of the driving member and a second stage transmission structure connected to the first stage transmission structure and the rotating member.

In some embodiments, the balancer includes a bracket and a first guide structure, the first guide structure and the drive assembly being mounted to the bracket, and a second guide structure disposed within the chamber, the second guide structure being coupled to the first guide structure to guide movement of the balancer.

In some embodiments, the first guide structure comprises a guide member comprising a guide wheel and the second guide structure comprises a guide rail, the guide wheel being movably connected to the guide rail.

In some embodiments, the guide member comprises two of the guide wheels and a connecting rod, the two guide wheels being connected by the connecting rod, the guide rail being located partially in a space between the two guide wheels.

In some embodiments, the guide wheel is in resilient abutment with the guide rail.

In some embodiments, the balancing assembly includes a marker and a displacement detector, the balancing assembly is configured to move the marker and the displacement detector relative to each other when the balancer is driven by the driving assembly to move in the cavity, and the displacement detector is configured to detect a number of times the marker passes the displacement detector, the number of times the marker passes the displacement detector being related to a position of the balancer.

In some embodiments, the balancing assembly includes a correcting member and a correction detecting member, the balancing assembly is configured such that, in a case where the balancer moves, the correcting member moves relative to the correction detecting member, and the correction detecting member is configured to detect the correcting member to eliminate a position error of the balancer.

The utility model discloses embodiment's a domestic appliance includes body, cavity and any embodiment of the aforesaid balanced subassembly, the cavity can connect with rotating the body, the balance body is installed the cavity.

In the household appliance, the bearing structure can bear the action of centrifugal force generated by high-speed rotation of the cavity, so that the phenomenon that the centrifugal force borne by the balancer increases the friction force between the driving assembly and the balancer body is avoided, and the driving assembly can drive the balancer to move in the cavity easily due to the arrangement of the bearing structure.

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 the cavity and the balance body according to the embodiment of the present invention;

fig. 3 is another partially exploded view of the chamber and the balance according to the embodiment of the present invention;

FIG. 4 is an exploded schematic view of a balancing assembly of an embodiment of the present invention;

FIG. 5 is another exploded schematic view of a counterbalance assembly according to an embodiment of the present invention;

fig. 6 is a schematic block diagram of a household appliance according to an embodiment of the present invention;

fig. 7 is another schematic block diagram of a household appliance according to an embodiment of the present invention;

fig. 8 is an exploded schematic view of a balance body according to an embodiment of the present invention;

fig. 9 is a schematic perspective view of a balancer according to an embodiment of the present invention;

fig. 10 is another perspective view of the balancer according to the embodiment of the present invention;

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

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

fig. 13 is a schematic structural view of a speed regulation structure according to an embodiment of the present invention;

fig. 14 is another exploded schematic view of a counterbalance assembly according to an embodiment of the present invention;

fig. 15 is a schematic structural view of a load bearing structure according to an embodiment of the present invention;

FIG. 16 is another schematic structural view of a load bearing structure according to an embodiment of the present invention;

fig. 17 is a schematic structural view of a first guide structure according to an embodiment of the present invention;

fig. 18 is a schematic view of the interior of the structure of a first guide structure according to an embodiment of the present invention;

fig. 19 is another structural internal schematic view of the first guide structure of the embodiment of the present invention;

FIG. 20 is a schematic view of another portion of a balancing assembly according to an embodiment of the present invention;

fig. 21 and 22 are schematic views of the displacement detector according to the embodiment of the present invention;

fig. 23 is a schematic view of the balancer of the embodiment of the present invention at an initial position;

fig. 24 is a schematic distribution diagram of the correction member according to the embodiment of the present invention.

Description of the main element symbols:

a household appliance 1000;

the balance assembly 100, the body 200, the water containing cavity 210, the cavity 300 (washing cavity 300), the first end 302, the second end 304, the main controller 400, the vibration damping structure 500, the mounting plate 600, the fixing frame 700, the rotating shaft 800, the second wireless charging assembly 900 and the transmitting coil 910;

the balance body 10, the chamber 12, the initial position 121, the inner wall 122, the bearing ring 14, the end cover 16, the connecting piece 18, the ring seat 11, the second guide structure 13 and the guide rail 132;

balancer 20, controller 22, bracket 24, control cabin 26, drive assembly 28, drive element 282, output shaft 2822, rotating element 284, gear 2842, tooth 28422, groove 28424, speed regulation structure 286, first stage transmission structure 2862, worm 28622, worm wheel 28624, second stage transmission structure 2864, first gear 28642, second gear 28644, box 2866, transmission shaft 2868, bearing structure 21, bearing plate 212, mounting hole 2122, rolling element 214, bearing 2142, rotating shaft 2144, first guide structure 23, guide element 232, guide wheel 2322, connecting rod 2324, connecting frame 234, mounting groove 2342, rotating shaft 236, lead wire 237, base 238, elastic element 231, connecting column 233, first wireless charging assembly 25, first coil 252, energy storage device 27, battery cabin 29;

the wireless charging device comprises a first wireless charging assembly 30, a receiving coil 32, an energy storage device 40, an identification member 50, a displacement detection member 60, a correction member 70 and a correction detection member 80.

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 5, a balance assembly 100 according to an embodiment of the present invention is applied to a household appliance 1000. The home appliance 1000 includes a body 200, a cavity 300, and a balancing assembly 100. The chamber 300 is rotatably connected to the body 200, and a load may be placed in the chamber 300. The balancing assembly 100 includes a balancing body 10 and a balancer 20. The balance body 10 is installed in the cavity 300, a chamber 12 is provided in the balance body 10, and the balancer 20 is movable in the chamber 12 of the balance body 10. The home appliance 1000 may be a laundry treating appliance such as a washing machine, a dryer, or other home appliances having the rotatable cavity 300.

It can be understood that, when the household electrical appliance 1000 is in operation, the cavity 300 rotates at a high speed, and the load in the cavity 300 is easily distributed unevenly, so that the cavity is eccentric. When the chamber 300 rotates at a high speed, the home appliance 1000 may generate a large vibration. The balance body 10 is fixedly connected to the cavity 300 and rotates together with the cavity 300. Accordingly, it is possible to offset or reduce the eccentric mass when the cavity 300 rotates by means of the self-gravity and the centripetal force of the balancer 20 by controlling the movement of the balancer 20 within the balancing body 10, and thus it is possible to reduce the vibration of the home appliance 1000. Specifically, referring to fig. 6 and 7, the home appliance 1000 includes a main controller 400, the balancer 20 includes a controller 22, and the main controller 400 may communicate with the controller 22. The main controller may generate a movement command according to a vibration signal of the home appliance 1000 (e.g., a vibration signal of the body 200), and the controller 22 controls the balancer 20 to move a certain distance according to the received movement command. The main controller 400 and the controller 22 may be connected to communicate by wire or may be connected to communicate by wireless.

In the illustrated embodiment, the chamber 300 is rotatably provided within the body 200. It is understood that in other embodiments, the cavity 300 and the body 200 may be connected in other manners, and are not limited in particular. In the present embodiment, the household appliance 1000 is a washing machine, which can be used to wash clothes, and the clothes are placed in the cavity 300. The cavity 300 is a washing cavity 300 (inner barrel), the body 200 may include a shell and a water containing cavity 210 (outer barrel), the water containing cavity 210 and the washing cavity 300 are both cylindrical, the washing cavity 300 may be rotatably disposed in the water containing cavity 210, and the water containing cavity 210 and the washing cavity 300 may be disposed in the shell. The washing chamber 300 may have a driving axis X arranged horizontally, obliquely or vertically. That is, the driving axis X of the washing chamber 300 is parallel, inclined or perpendicular to the horizontal plane. It is understood that one or more balance bodies 10 may be disposed at any position of the washing chamber 300, and the balance bodies 10 rotate with the rotation of the washing chamber 300. The central axis of the balancing body 10 is parallel to or coincident with the transmission axis X of the washing chamber 300, that is, the balancing body 10 may be disposed coaxially with the washing chamber 300 or eccentrically with respect to the washing chamber 300. The balancing body 10 may be spirally arranged on the washing chamber 300.

In addition, referring to fig. 1, in order to further reduce the transmission of the vibration inside the washing machine to the outside, the water containing cavity 210 may be connected to the mounting plate 600 through the vibration damping structure 500, and the mounting plate 600 may be fixed to the bottom plate of the housing, or may be the bottom plate of the housing. The damping structure 500 may employ springs, hydraulics, and the like to reduce the transmission of vibrations.

Referring to fig. 2 and 3, the household appliance 1000 is a washing machine. The cavity 300 includes a first end 302 and a second end 304 along the drive axis X. The balance body 10 is connected to the first end 302 and the second end 304, respectively. At least one balancer 20, e.g., one or two or more, is disposed in the chamber 12 of each balance body 10. Preferably, two balancers 20 are provided in the chamber 12 of the balancing body 10, and the initial positions 121 of the two balancers 20 are symmetrically arranged, so that the cavity 300 can be balanced in an unloaded state.

Specifically, the second end 304 of the cavity 300 is fixedly connected to the fixing frame 700, the fixing frame 700 may be connected to the rotating shaft 800, and a power device (not shown) of the household appliance 1000 may be connected to the rotating shaft 800 to drive the cavity 300 to rotate. In the illustrated embodiment, the first end 302 of the chamber 300 is a front end, which may refer to the end facing the user, and the second end 304 is a rear end. In other embodiments, the first end 302 or the second end 304 of the cavity 300 is provided with the balance body 10, or the balance body 10 is provided between the first end 302 and the second end 304. The holder 700 may be a tripod.

In the illustrated embodiment, the balance body 10 is annular, and the balance body 10 may be referred to as a balance ring. It is understood that in other embodiments, the balancing body 10 may have other shapes, such as a plate shape, and is not particularly limited thereto. Referring to fig. 4, 5 and 8, the balance body 10 includes a bearing ring 14, an end cap 16, a ring-shaped connecting member 18 and a ring seat 11. The ring seat 11 has a chamber 12 formed therein, the end cap 16 is connected to the ring seat 11 and seals the chamber 12, and the carrier ring 14 is mounted on the inner wall 122 of the chamber 12. The number of the connecting pieces 18 can be two, and the connecting pieces are respectively arranged on two sides of the bearing ring 14. Since the balance body 10 has a ring shape, the balancer 20 can move circularly in the chamber 12 of the balance body 10.

Referring to fig. 4, 5 and 9-12, the balancer 20 includes a bracket 24, a control cabin 26, a driving assembly 28, a bearing structure 21 and a first guide structure 23. The control cabin 26, the drive assembly 28 and the first guide structure 23 are mounted on the support frame 24, the drive assembly 28 being provided on the carrying structure 21. The control cabin 26 has a control panel built therein, and the controller 22 of the balancer 20 is provided on the control panel. The drive assembly 28 is connected to a control board, and the controller 22 on the control board can control the drive assembly 28 to drive the balancer 20 to move in the chamber 12. The load bearing structure 21 is in contact with the inner wall 122 of the chamber 12 and is adapted to move along the inner wall 122 of the chamber 12 to take up the centrifugal forces to which the balancer 20 is subjected as it moves within the chamber 12 during movement of the balancer 20.

It can be understood that, during the high-speed rotation of the cavity 300 of the household appliance 1000, the balancer 20 in the chamber 12 of the balancer 10 is influenced by the centrifugal force generated by the high-speed rotation of the cavity 300 when the balancer 10 is fixed on the cavity 300 due to the centrifugal force generated by the circular motion of the cavity 300. The bearing structure 21 can bear the action of centrifugal force generated by the high-speed rotation of the cavity 300, so that the centrifugal force applied to the balancer 20 is prevented from increasing the friction force between the driving assembly 28 and the balancing body 10, and the bearing structure 21 can enable the driving assembly 28 to drive the balancer 20 to move in the cavity 12 easily.

Specifically, the whole bearing structure 21 is made of a metal material, is firm and not easy to deform, can stably bear the whole driving assembly 28, and ensures the normal operation of the driving assembly 28. During movement of the balancer 20, the bearing structure 21 moves along the inner wall 122 of the chamber 12, and by contact with the inner wall 122 of the chamber 12, bears the centrifugal force of the balancer 20 under the circular motion of the chamber 300. In the embodiment of the present invention, the bearing structure 21 can ensure that the balancer 20 can normally move even when the rotation speed of the cavity 300 is greater than or equal to 800 rpm. The bracket 24 may be made of a metal material, such as a thick stainless steel plate, for fixing the control cabin 26 and other components of the balancer 20. In this way, the balancer 20 can be prevented from scattering of parts of the balancer 20 during operation, and the bracket 24 is not deformed during the entire operation of the balancer 20.

Referring to fig. 4, 5, 9 and 10, the driving assembly 28 includes a driving member 282 and a rotating member 284, wherein the driving member 282 is connected to the rotating member 284. The driving member 282 is used to drive the rotating member 284 to rotate so as to drive the balancer 20 to move in the chamber 12. In this way, by moving the balancer 20 by the driving assembly 28, the position of the balancer 20 in the chamber 12 can be changed to reduce the vibration of the household appliance 1000.

Specifically, the driving member 282 includes a motor for driving the rotating member 284 to rotate, so as to drive the balancer 20 to move in the cavity 12, so that the balancer 20 can rapidly reduce or offset the eccentric mass of the cavity 300, thereby reducing the vibration of the household appliance 1000. By controlling the forward rotation, reverse rotation, or stop rotation of the motor, the balancer 20 may be controlled to move or stop moving in a clockwise direction or a counterclockwise direction. An annular connecting member 18 is provided in the chamber 12, teeth are provided on the inner side of the connecting member 18, and the rotating member 284 includes a gear 2842, and the gear 2842 is engaged with the teeth. Thus, the balancer 20 is moved by the engagement of the gear 2842 and the teeth, so that the balancer 20 is prevented from slipping during movement, and the stability of movement of the balancer 20 is ensured. In the illustrated embodiment, the chamber 12 comprises an inner wall 122, the inner wall 122 is provided with a carrier ring 14, the carrier ring 14 is provided with connecting pieces 18 on both sides, and the modulus of the teeth of the connecting pieces 18 is 1 or 1.25. In other embodiments, the load ring 14 may be omitted and the connector 18 may be provided directly on the inner wall 122 of the chamber 12.

Further, the drive assembly 28 includes a speed adjustment structure 286, the speed adjustment structure 286 connecting the drive member 282 and the rotational member 284. In this manner, the movement speed of the balancer 20 can be further controlled by the speed adjusting structure 286. Specifically, referring to fig. 13 and 14, the speed adjustment structure 286 includes a first stage transmission structure 2862 and a second stage transmission structure 2864, the first stage transmission structure 2862 is connected to the output shaft 2822 (the output shaft 2822 of the motor) of the driving member 282, and the second stage transmission structure 2864 is connected to the first stage transmission structure 2862 and the rotating member 284. In this manner, the reduction ratio of the balancer 20 can be realized by the two-stage transmission structure.

It is to be appreciated that the speed adjustment structure 286 can include a case 2866 and a first stage transmission structure 2862 and a second stage transmission structure 2864 located within the case 2866. The box 2866 may be made of a firm and non-deformable thick steel plate, and the box 2866 is rectangular in shape as a whole. In other embodiments, the box 2866 may have other shapes such as a cube, prism, or cylinder. In the illustrated embodiment, the inner wall 122 of the chamber 12 is provided with two connecting members 18, and the rotating member 284 includes two gears 2842, and the two gears 2842 are respectively located at both sides of the casing 2866 and respectively engaged with the teeth portions of the two connecting members 18. The speed adjustment structure 286 can adjust the speed at which the driving member 282 drives the rotating member 284 to rotate, thereby adjusting the moving speed of the balancer 20.

Specifically, the first stage drive structure 2862 includes a worm 28622 and a worm gear 28624. Second stage drive configuration 2864 includes first gear 28642 and second gear 28644. The worm 28622 is connected to the output shaft 2822 of the driving member 282 and the worm wheel 28624, the worm wheel 28624 is fixedly connected to the first gear 28642, the first gear 28642 is engaged with the second gear 28644, and the second gear 28644 is connected to the rotating member 284. Referring to fig. 13 and 14, a transmission shaft 2868 is connected to the second gear 28644 at the opposite side, and the transmission shaft 2868 is connected to two gears 2842 of the rotating member 284 to realize synchronous rotation. In the process of operating the driving assembly 28, firstly the driving member 282 drives the worm 28622 to rotate through the output shaft 2822, then the worm 28622 drives the worm wheel 28624 matched with the worm to rotate, so as to realize the first-stage transmission, further the worm wheel 28624 drives the first gear 28642, and then the first gear 28642 drives the second gear 28644, so as to realize the second-stage transmission. The second gear 28644 drives the two gears 2842 of the rotary member 284 via the drive shaft 2868 to rotate synchronously, thereby moving the balancer 20 within the chamber 12. The drive shaft 2868 may be a cylindrical shaft or a non-cylindrical shaft. In the illustrated embodiment, the drive shaft 2868 is a D-shaft.

The first gear 28642 and the second gear 28644 both have a modulus of 0.5 and a gear ratio of 1: 3. In addition, the worm wheel 28624 and worm 28622 can also act as a limit stop, allowing the balancer 20 to be stably retained within the housing 12 in the absence of operation of the drive 282. In one example, a two-stage transmission may achieve a balancer 20 reduction ratio of 75 or more.

Referring to fig. 15, the supporting structure 21 includes a supporting plate 212 and a rolling member 214. The rollers 214 are rotatably coupled to the carrier plate 212 and contact the inner wall 122 of the chamber 12, and the drive assembly 28 is mounted on the carrier plate 212.

In particular, the carrier plate 212 is provided with two rolling members 214 at both ends. The rolling members 214 include bearings 2142 and a rotating shaft 2144. The rotating shaft 2144 is fixedly connected to the bearing plate 212 by metal welding, adhesive bonding, screw connection or snap connection, which is not limited in this respect. The rotating shaft 2144 penetrates through the bearing 2142, and the bearing 2142 is sleeved on the rotating shaft 2144. During the process of the driving member 282 driving the rotating member 284 to move the balancer 20, the bearing 2142 rotates around the rotating shaft 2144, so that the bearing structure 21 slides in the cavity 12.

Further, the bearing plate 212 is further provided with a mounting hole 2122, and the mounting hole 2122 is used for mounting and connecting the bearing structure 21 and the driving assembly 28. For example, the drive assembly 28 may be provided on the carrier structure 21 by mounting the carrier structure 21 to the box 2866 with fasteners. The mounting hole 2122 may be circular, rectangular, oval, etc.

Referring to fig. 16, the supporting structure 21 may be an arc block with a certain curvature, such as an arc block made of a smooth material such as POM. The arcuate segments slide within the chamber 12 during movement of the equalizer 20 by the drive member 282 driving the rotatable member 284.

Referring to fig. 12, a second guiding structure 13 is disposed in the chamber 12. The second guide structure 13 is connected with the first guide structure 23 to guide the movement of the balancer 20. In this way, the balancer 20 can be stably moved in the chamber 12 by the guidance of the first guide structure 23 and the second guide structure 13, and the balancer 20 is prevented from being separated from the balance body 10.

It is understood that in the case where the balancer 20 moves at a high speed, it is difficult in the related art to ensure stable movement of the balancer 20, and the balancer 20 may be separated from the balance body 10 due to excessively high rotation speed. In the embodiment of the present invention, the first guiding structure 23 is elastically connected to the second guiding structure 13, so that the balancer 20 can be prevented from shaking during the moving process. The first guide structure 23 and the second guide structure 13 cooperate with each other to guide the movement of the balancer 20 together, so that the balancer 20 can maintain a stable movement at any rotational speed. The number of the first guide structures 23 may be two, and two first guide structures 23 are installed at both ends of the balancer 20. The first guide structures 23 may be mounted at both ends of the bracket 24 by means of connecting plates. In other embodiments, the number of the first guiding structures 23 may be other, and is not limited in detail herein.

Referring to fig. 12 and 17-19, the first guiding structure 23 includes a guiding element 232, the guiding element 232 includes a guiding wheel 2322, the second guiding structure 13 includes a guiding rail 132, and the guiding wheel 2322 is movably connected to the guiding rail 132. In this way, it is advantageous to reduce the frictional force between the first guide structure 23 and the second guide structure 13 when the balancer 20 moves.

Specifically, the guide wheels 2322 may be slidably coupled with the sides of the guide rail 132, or rollably coupled. In one example, the guide wheel 2322 is a roller, and may be circular in shape, and the guide wheel 2322 with a smooth surface may roll on the guide rail 132. Thus, during the movement of the balancer 20, the friction force between the first guide structure 23 and the second guide structure 13 is small, which reduces the resistance when the balancer 20 moves, and is beneficial to reducing the power of the balancer 20. In the example of fig. 17, each first guide structure 23 comprises two guides 232, and correspondingly the number of guide rails 132 is two. In the example of fig. 19, each first guide structure 23 comprises one guide 232, and correspondingly the number of guide rails 132 is one.

Referring to fig. 17 and 19, the guide 232 includes two guide wheels 2322 and a connecting rod 2324, the two guide wheels 2322 are connected by the connecting rod 2324, and the guide rail 132 is partially located in a space between the two guide wheels 2322. In this way, the two guide wheels 2322 of the guide 232 can clamp the guide rail 132, and further, the stable movement of the balancer 20 is ensured.

Specifically, the rail 132 includes two opposite sides, and the rail 132 has a substantially trapezoidal cross section. The two guide wheels 2322 are connected by a connecting rod 2324 to form a guide 232 shaped like an H. The guide wheels 2322 are slidably or rollingly coupled to the sides of the guide rail 132. The guide 232 having an H-shape may clamp the guide rail 132, further ensuring stable movement of the balancer 20. In the illustrated embodiment, the guide wheels 2322 may roll on the rail 132, and two guide wheels 2322 may clamp the rail 132. In other embodiments, the first guiding structure 23 and the second guiding structure 13 can be connected to each other by embedding or engaging, and can also play a guiding role. Other embodiments are not limited thereto.

Furthermore, the two guide wheels 2322 may be rotatably connected with the connecting rod 2324, for example, by bearings. The two guide wheels 2322 may also be fixedly connected to the connecting rod 2324. The fixing connection mode can be metal welding, screw connection or snap connection, and is not limited in detail here. In the illustrated embodiment, the two guide wheels 2322 are fixedly coupled to the connecting rod 2324, and the two guide wheels 2322 rotate with the connecting rod 2324. It will be appreciated that in this embodiment, the first guide structure 23 further includes a connecting frame 234 and a rotating shaft 236 fixed to the connecting frame 234. The rotating shaft 236 is fixed, the rotating shaft 236 penetrates through the two guide wheels 2322 and the connecting rod 2324, and the two guide wheels 2322 and the connecting rod 2324 can rotate around the rotating shaft 236 together, that is, the guide member 232 rotates around the rotating shaft 236.

Referring to fig. 12, the guide wheel 2322 elastically abuts against the guide rail 132. It can be understood that the guide rail 132 is partially located in a space between the two guide wheels 2322, and this certain space makes the guide wheels 2322 and the guide rail 132 possible to be elastically abutted, so that the balancer 20 can be prevented from shaking during moving, and stable movement of the balancer 20 can be ensured. Specifically, when the acting force between the guide 232 and the guide rail 132 is too large, the acting force generated by the elastic contact between the guide wheels 2322 of the guide 232 and the guide rail 132 causes the guide wheels 2322 to be separated from the guide rail 132, thereby damping the acting force between the guide wheels 2322 and the guide rail 132. Thus, the acting force between the first guide structure 23 and the second guide structure 13 can be reduced, preventing the balancer 20 from shaking during movement.

Further, referring to fig. 17-19, the first guiding structure 23 includes a base 238 and a connecting frame 234. The link frame 234 is elastically movably coupled to the base 238, and the guide 232 is installed at the link frame 234. In this way, in the process of moving the balancer 20, the base 238 is elastically movably connected by the connecting frame 234, and the guide wheels 2322 are elastically abutted against the guide rail 132, so that the balancer 20 can stably move.

Specifically, the base 238 is provided with an elastic member 231 therein, the elastic member 231 is connected to the connecting frame 234, and the elastic member 231 is used for providing a force to the connecting frame 234 to elastically abut the guide wheel 2322 against the guide rail 132. In this way, the guide wheels 2322 and the guide rail 132 can be elastically abutted by the acting force provided by the elastic member 231, thereby ensuring that the balancer 20 can stably move at any rotation speed.

It can be understood that the base 238 has a blind hole for receiving the elastic member 231 therein, the connecting column 233 is disposed below the connecting frame 234, one end of the elastic member 231 is connected to the connecting column 233, and the other end of the elastic member 231 abuts against the bottom wall of the blind hole. The elastic member 231 may be connected to the connection frame 234 through the connection post 233. In the illustrated embodiment, each of the first guide structures 23 includes two elastic members 231 and two connection posts 233, and the elastic members 231 and the connection posts 233 are connected in a one-to-one correspondence. The first guide structure 23 includes two elastic members 231 so that the base 238 can withstand a greater force. In other embodiments, the number of the elastic members 231 of the first guiding structure 23 may be 1, 3 or other numbers, which are not limited herein. The number of the coupling posts 233 corresponds to the number of the elastic members 231. The elastic member 231 may be a spring, such as a coil spring, a leaf spring, a torsion bar spring, a gas spring, or a rubber spring, and the like, and is not particularly limited herein.

Referring to fig. 3, 6 and 11, the balancing assembly 100 further includes a first wireless charging assembly 30 and an energy storage device 40 mounted in the cavity 300 of the household appliance 1000, and the household appliance 1000 includes a second wireless charging assembly 900. The first wireless charging assembly 30 is connected to the energy storage device 40. The first wireless charging assembly 30 is configured to receive the charging energy wirelessly transmitted by the second wireless charging assembly 900 and charge the energy storage device 40 with the charging energy. The energy storage device 40 is located outside the balancer 20, the second guide structure 13 provided on the inner wall 122 of the chamber 12 is electrically conductive and electrically connected to the energy storage device 40, and the first guide structure 23 of the balancer 20 is also electrically conductive. Since the first guide structure 23 and the second guide structure 13 are movably connected, the energy storage device 40 supplies power to the balancer 20 through the conductive first guide structure 23 and the second guide structure 13. It is understood that the energy storage device 40 is located outside the balancer 20, so that the weight of the balancer 20 itself can be reduced, and the balancer 20 can be driven more easily, and further, in the case of a plurality of balancers 20, the energy storage device 40 can be shared by a plurality of balancers 20, and the balancing assembly 100 can form a unified power supply at a lower cost.

Specifically, the first wireless charging assembly 30 includes a receiving coil 32, the second wireless charging assembly 900 includes a transmitting coil 910, and the receiving coil 32 and the transmitting coil 910 are oppositely disposed at a distance. The transmitting coil 910 may transmit the charging energy to the receiving coil 32, and the receiving coil 32 charges the energy storage device 40 with the received charging energy. The energy storage device 40 is electrically connected with the second guide structure 13, so that the balancer 20 can take electricity from the energy storage device 40 through the second guide structure 13.

It is understood that, in case the home appliance 1000 is a washing machine, the receiving coil 32 may be installed on the fixing bracket 700 of the chamber 300, the transmitting coil 910 may be installed at one end of the water containing chamber 210, and the receiving coil 32 and the transmitting coil 910 are oppositely disposed at an interval. The central axes of the receiver coil 32 and the transmitter coil 910 are collinear with the drive axis X of the chamber 300. Thus, when the cavity 300 rotates, the power transmission efficiency of the receiving coil 32 and the transmitting coil 910 is less affected.

In the example of fig. 11 and 12, the first guide structure 23 includes two guide members 232 and two rotation shafts 236 that are capable of conducting electricity, and the second guide structure 13 includes two guide rails 132 that are capable of conducting electricity. The guide members 232 are sleeved on the rotating shaft 236, and the guide members 232 are correspondingly connected with the guide rails 132 one by one. The two guiding elements 232 are electrically connected to the control board through the rotating shafts 236. In this manner, the first guide structure 23 draws power from the energy storage device 40 through the second guide structure 13 and transmits the power to the control board, which provides power to the load (e.g., the drive 282) of the balancer 20.

Specifically, the energy storage device 40 may include a rechargeable battery, the positive electrode and the negative electrode of which are respectively connected to the guide rail 132 and the guide member 232 through wires 237, the guide member 232 is connected to the rotating shaft 236, and the rotating shaft 236 is connected to the control board through wires 237. The electric power of the battery is transmitted to the balancer 20 by the two rails 132. Since the two guides 232 are connected to the two guide rails 132, respectively, the guides 232 can take power from the battery through the guide rails 132 according to the principle that metal has conductivity, and then the guides 232 transmit the power to the rotating shaft 236 and the wire 237, and then, to the control board of the balancer 20, and further, the control board can supply the power to the load of the balancer 20. The shaft 236 may be a copper shaft and the guide 232 and the rail 132 may be made of copper. The shaft 236, the guide 232 and the guide rail 132 may be made of other conductive materials, and are not particularly limited herein.

In the example of fig. 17, the first guide structure 23 includes a base 238, two elastic members 231, two connecting frames 234 and two guide members 232, the two elastic members 231 are connected to the base 238 and respectively connected to the two connecting frames 234, and the two guide members 232 are respectively mounted on the two connecting frames 234. The rotating shaft 236 of the guide 232 is fixedly connected with the connecting frame 234. The two connecting frames 234 are provided with mounting slots 2342, and the mounting slots 2342 are used for the wires 237 connecting the rotating shaft 236 and the control board to pass through. During the movement of the balancer 20, the connecting frame 234 tightly connects the two guide members 232 with the two guide rails 132, respectively, by the elastic members 231. In this way, the risk of poor contact of the guide 232 with the guide rail 132 due to assembly errors and manufacturing errors can be avoided.

Referring to fig. 7 and 10, the balancer 20 further includes a first wireless charging module 25 and an energy storage device 27, the energy storage device 27 is connected to the first wireless charging module 25, and the household appliance 1000 includes a second wireless charging module 900. The first wireless charging assembly 25 is configured to receive charging energy wirelessly transmitted by the second wireless charging assembly 900 of the household appliance 1000 and charge the energy storage device 27 with the charging energy. In this way, the first wireless charging assembly 25 of the balancer 20 can receive charging energy through wireless transmission and charge the energy storage device 27, so that electric transmission by means of brushes can be avoided, and the sealing performance of the balancer 10 and the reliability of power transmission can be improved. Also, the balancer 20 itself is mounted with the first wireless charging assembly 25 and the energy storage device 27, so that the balancer 20 can form a stand-alone power supply, which is not easily powered down by other factors.

It can be understood that the second wireless charging assembly 900 is disposed on the body 200, and the main controller 400 is connected to the second wireless charging assembly 900 and can control the second wireless charging assembly 900 to transmit charging energy. Specifically, when the energy storage device 27 needs to be charged, the main controller 400 controls the second wireless charging assembly 900 to transmit an activation signal, the first wireless charging assembly 25 receives the activation signal and then transmits a charging signal to the second wireless charging assembly 900, the second wireless charging assembly 900 receives the charging signal and then transmits charging energy, and the first wireless charging assembly 25 charges the energy storage device 27 by using the received charging energy. Thus, the accurate positioning of wireless charging is realized, and the problem of damage caused by the fact that the second wireless charging assembly 900 is in a continuous operation state without receiving the charging energy by a receiving end can be avoided.

In the example of fig. 10, the energy storage device 27 comprises a rechargeable battery. The balancer 20 includes a battery compartment 29, the battery compartment 29 being mounted on the bracket 24, and batteries being accommodated in the battery compartment 29. The first wireless charging assembly 25 includes a first coil 252, and the first coil 252 is mounted on the outer surface of the battery compartment 29 and connected to the battery. The second wireless charging assembly 900 includes a second coil (not shown). In the present embodiment, the first coil 252 is movable with the movement of the balancer 20, and the second coil is fixed in position, so that the first coil 252 and the second coil are disposed to face each other. The first coil 252 and the second coil may be electromagnetic coils. The second coil may transmit electromagnetic wave energy, which may power the first coil 252, and the first coil 252 may transmit a pulse signal upon receiving the electromagnetic wave energy transmitted by the second coil. Therefore, the second wireless charging assembly 900 transmits the activation signal, which may be that the second coil of the second wireless charging assembly 900 intermittently transmits electromagnetic wave energy (i.e., the transmission power is low) or continuously transmits electromagnetic wave energy for a preset time period, which is greater than or equal to a time period for one rotation of the balancer 20. The first wireless charging assembly 25 transmits a charging signal, which may be a pulse signal transmitted by the first coil 252 of the first wireless charging assembly 25. The second wireless charging component 900 transmits charging energy, which may be a second coil of the second wireless charging component 900 that continuously transmits electromagnetic wave energy (i.e., the transmission power is higher).

Referring to fig. 20, the balancing assembly 100 includes a marker 50 and a displacement detecting element 60, the balancing assembly 100 is configured such that when the driving assembly 28 drives the balancer 20 to move in the cavity 12, the marker 50 and the displacement detecting element 60 move relatively, the displacement detecting element 60 is used to detect the number of times that the marker 50 passes through the displacement detecting element 60, and the number of times that the marker 50 passes through the displacement detecting element 60 is related to the position of the balancer 20. In this way, the displacement detecting member 60 can detect the number of times the identification member 50 passes the displacement detecting member 60, and thus can acquire the moving distance of the balancer 20, so that the position of the balancer 20 can be determined.

It is understood that, in the embodiment of the present invention, in the case where the balancer 20 moves in the chamber 12, the marker 50 and the displacement detecting member 60 move relatively to each other to pass through the displacement detecting member 60, and the number of times the marker 50 passes through the displacement detecting member 60 is related to the position of the balancer 20. Therefore, the moving distance of the balancer 20 can be determined by detecting the number of times the identification member 50 passes the displacement detection member 60, and the position of the balancer 20 can be determined in combination with the initial position 121 of the balancer 20. The initial position 121 may refer to a position before the balancer 20 starts moving within the chamber 12 or a position that can be determined during movement of the balancer 20.

Specifically, the rotational member 284 is provided with the identifier 50, or the inner wall 122 of the chamber 12 is provided with the identifier 50. Thus, a plurality of detection modes for the identification member 50 can be provided, and the flexibility of the identification member 50 during installation is improved. In the illustrated embodiment, the rotating member 284 is provided with the identification member 50. It is understood that the turning member 284 includes a gear 2842. The chamber 12 comprises an inner wall 122, the inner wall 122 being provided with the connection 18. Gear 2842 meshes with the teeth of connector 18. The flag 50 is a tooth of the gear 2842. In this manner, the teeth of the gear 2842 may be utilized as the identifier 50 without the need to provide an additional identifier 50. It will be appreciated that in other embodiments, the identifiers 50 may also be teeth of the connector 18.

The teeth of the gear 2842 or the teeth of the connecting member 18 have grooves therebetween, and the teeth are uniformly staggered from groove to groove. The gear 2842 is engaged with the teeth of the connecting element 18 and rotates, so that the balancer 20 is moved relative to the connecting element 18 by the rotation of the gear 2842. In this case, the teeth of the gear 2842 or the teeth of the connecting member 18 may serve as the identifier 50, and accordingly, the displacement detector 60 may be mounted to the balancer 20. The displacement sensing member 60 includes a sensing surface facing the flag 50. The teeth of the gear 2842 are used as the marker 50, i.e., the rotating member 284 is provided with the marker 50. The teeth of the connecting element 18 arranged on the inner wall 122 are used as the markers 50, i.e. the inner wall 122 of the chamber 12 is provided with the markers 50. In other embodiments, the identifier 50 may be disposed within the chamber 12 at a location other than the inner wall 122.

Specifically, when the identifier 50 is the teeth of the gear 2842, the displacement sensing member 60 may be mounted on the balancer 20 at a position opposite to the teeth of the gear 2842. The displacement sensing member 60 is relatively stationary as the gear 2842 rotates. When the indicator 50 is a tooth of the connecting element 18, the displacement detector 60 may be mounted on the balancer 20 opposite to the tooth of the connecting element 18, and when the gear 2842 rotates, the balancer 20 moves to drive the displacement detector 60 to move relative to the connecting element 18. In the process of the rotation of the gear 2842, the teeth of the gear 2842 will pass the displacement detecting member 60 continuously, so the number of times the teeth of the gear 2842 pass the displacement detecting member 60, that is, the number of teeth of the gear 2842 passing the displacement detecting member 60 can be detected.

The displacement detecting member 60 includes at least one of an optical sensor, a hall sensor, and an ultrasonic sensor. Thus, the displacement detecting member 60 is optional and low in cost. Specifically, when the displacement detecting member 60 includes one kind of sensor, one of an optical sensor, a hall sensor, and an ultrasonic sensor may be selected. When the displacement detecting member 60 includes a plurality of kinds of sensors, two or more kinds of optical sensors, hall sensors, and ultrasonic sensors may be selected. The data detected by two or more sensors may be averaged to obtain the output data of the displacement detecting element 60, or the data may be subjected to calculation of different weights or ratios to obtain the output data of the displacement detecting element 60.

In the example of fig. 21, the flag 50 is the teeth 28422 of the gear 2842 and the displacement detector 60 is a photosensor. The light sensor may transmit and receive light signals. Because the teeth 28422 and the grooves 28424 of the gear 2842 are different from the optical sensor in distance, the intensity of the optical signal reflected by the optical sensor from the teeth 28422 is different from the intensity of the optical signal reflected by the grooves 28424, regular pulse signals can be obtained after processing, the number of the pulses is the number of the teeth of the gear 2842, and therefore the moving distance of the balancer 20 can be obtained, and the position of the balancer 20 can be obtained by combining the initial position 121 of the balancer 20. The light sensor may be an infrared sensor. The principle of the ultrasonic sensor is similar to that of the optical sensor, and the description thereof is omitted.

In the example of fig. 22, the flag 50 is the teeth 28422 of the gear 2842 and the displacement detector 60 is a hall sensor. Since the teeth 28422 and the recesses 28424 affect the direction of the magnetic field lines of the hall sensor, the magnetic field line density passing through the hall sensor is changed. When the gear 2842 rotates, the hall sensor outputs regular pulse signals, the number of teeth of the gear 2842 can be calculated according to the pulse signals, and thus the moving distance of the balancer 20 can be obtained, and the position of the balancer 20 can be obtained by combining the initial position 121 of the balancer 20.

In other embodiments, the marking member 50 may be a black and white stripe, and the displacement detecting member 60 may be a light sensor. The black and white stripes may be arranged on the gear 2842, or on a component which rotates coaxially with the gear 2842, or on the inner wall 122 of the chamber 12 to form a circular ring and arranged concentrically with the connecting piece 18, and the light sensor may be arranged on the balancer 20 at a position opposite to the black and white stripes. Since the black stripes absorb light and the white stripes reflect light, and the black and white stripes pass through the photo sensor continuously in the moving process of the balancer 20, the number of times that the white stripes pass through the photo sensor, that is, the number of white stripes passing through the photo sensor can be detected. Regular pulse signals, i.e., the number of pulses by which the balancer 20 rotates past the white stripes, can be obtained from the light signals received by the light sensors. Since the widths of the white stripes and the black stripes are determined, the moving distance of the balancer 20 can be obtained, and the position of the balancer 20 can be obtained in combination with the initial position 121 of the balancer 20.

It should be noted that the identification member 50 may have other configurations, for example, the rotatable member 284 may be a wheel having a plurality of spaced spokes, and the identification member 50 may be a spoke of a wheel. The displacement detecting member 60 may detect the number of times the web bar passes the displacement detecting member 60. The specific detection principle is similar to the detection principle described above.

Referring to fig. 6, 7 and 23, the chamber 12 is provided with an initial position 121. The balancer 20 includes a controller 22, and the controller 22 is electrically connected to the displacement detecting member 60. The controller 22 is configured to determine the position of the balancer 20 based on the number of times the marker 50 passes the displacement sensing member 60 and the initial position 121. In this manner, the location of the balancer 20 is easily determined.

It will be appreciated that the initial position 121 of the balancer 20, in the absence of movement of the balancer 20, refers to a default position when the balancer 20 is stationary within the chamber 12. The controller 22 records the initial position 121, and determines the position of the balancer 20 in combination with the distance moved by the balancer 20 when the balancer 20 starts to move from the default position. Specifically, the displacement detecting member 60 may output regular pulse signals according to the number of times the identification member 50 passes through the displacement detecting member 60, the controller 22 receives the pulse signals output by the displacement detecting member 60, processes the pulse signals to obtain the moving distance of the balancer 20, and finally calculates the specific position of the balancer 20 by combining with the initial position 121 of the balancer 20. The specific location of the balancer 20 may be transmitted to the main controller 400 of the home appliance 1000 by a wired or wireless manner.

In an embodiment of the present invention, a plurality of initial positions 121 may be provided in the chamber 12. In the case where there are a plurality of balancers 20 in the chamber 12, one balancer 20 is stopped at each initial position 121. In one embodiment, two home positions 121 are provided in the chamber 12, and the number of balancers 20 is two. In the case where the two balancers 20 are not moved, each of the initial positions 121 is stationarily stopped with one balancer 20. Preferably, the two initial positions 121 are arranged in a degree-symmetrical manner. Thus, the balance body 10 can be kept in balance without the movement of the balancer 20. In other embodiments, the number of the initial positions 121 may be one, three or other numbers, and the specific positions may be set according to the requirement, and are not limited specifically herein.

Referring to fig. 20 and 24, the balance assembly 100 includes a correcting member 70 and a correcting detecting member 80. The balancing assembly 100 is configured such that the correcting member 70 and the correcting detecting member 80 relatively move in a case where the balancer 20 moves, and the correcting detecting member 80 detects the correcting member 70 to eliminate a position error of the balancer 20. In this way, the calculation accuracy of the movement distance of the balancer 20 is improved.

It is understood that, since the balancer 20 moves for a long time, an accumulated error may occur when the displacement sensing member 60 senses information of the number of times the identification member 50 passes the displacement sensing member 60. Therefore, when the movement distance of the balancer 20 is calculated from the information of the number of times of error, an error occurs in the determined position of the balancer 20. Therefore, the position error of the balancer 20 can be eliminated by providing the correcting member 70 and the correction detecting member 80.

Specifically, when the calibration detecting member 80 passes each calibration member 70, information that it detects the calibration member 70 is transmitted to the controller 22. Further, the controller 22 sets the position of the balancer 20 to a value of 0, i.e., it regards the position as the origin to recalculate the moving distance of the balancer 20, so as to avoid the problem that the position of the balancer 20 cannot be accurately determined due to accumulated distance errors caused by long-term movement of the balancer 20. In this embodiment, after the calibration detecting member 80 passes through each calibration member 70, the information of the number of times that the displacement detecting member 60 passes through the identification member 50 is fed back to the controller 22 again from 0 by way of a pulse signal, and the moving distance of the balancer 20 by the controller 22 is calculated again, so as to obtain the accurate position information of the balancer 10 where the balancer 20 is located.

Referring to fig. 24, a plurality of correction pieces 70 are distributed and spaced apart from each other on the inner wall 122 of the chamber 12, and each correction piece 70 includes a different number of correction portions. The correction detecting member 80 may be one of a light sensor, an ultrasonic sensor, and a hall sensor. The number of pulses of the pulse signal is the same as the number of the correction portions, so that it can be determined from the pulse signal output from the correction detection member 80 that the balancer 20 is passing through a certain correction member 70, thereby determining the specific position of the balancer 20 in the chamber 12. As such, the position of the balancer 20 may be positioned within the chamber 12. In one example, the inner wall 122 of the chamber 12 is provided with one calibration piece 70 every 90 degrees, and the number of the calibration portions is one, two, three, or four, respectively. The number and position of the correction pieces 70 and the number of correction portions of the correction pieces 70 may be adjusted according to circumstances, and are not limited to the above-described embodiment. The principle of the optical sensor, the ultrasonic sensor or the hall sensor detecting the correcting member 70 is the same as that of the detecting marker 50, and thus, the description thereof is omitted.

To sum up, the present invention provides a balance assembly 200 for a household appliance 1000. The balancing assembly 100 includes a balancing body 10 and a balancer 20. The balance body 10 is for mounting in a cavity 300 of the home appliance 1000. The balancer 10 has a chamber 12 therein, the balancer 20 includes a bearing structure 21 and a driving assembly 28, and the driving assembly 28 is disposed on the bearing structure 21. The drive assembly 28 is adapted to drive movement of the balancer 20 within the chamber 12, and the bearing structure 28 is in contact with the inner wall 122 of the chamber 12 and is adapted to move along the inner wall 122 of the chamber 12 during movement of the balancer 20 to take up the centrifugal forces to which the balancer 20 is subjected as it moves within the chamber 12.

In the balancing assembly 100 of the above embodiment, the bearing structure 21 can bear the centrifugal force generated by the high-speed rotation of the cavity 300, so as to avoid the centrifugal force applied to the balancer 20 from increasing the friction force between the driving assembly 28 and the balancing body 10, and the bearing structure 21 can make the driving assembly 28 drive the balancer 20 to move in the cavity 12 more easily.

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 balance assembly for a household appliance, the balance assembly comprising a balance body and a balancer, the balance body being adapted to be mounted in a cavity of the household appliance, the balance body having a chamber therein, the balancer comprising a carrying structure and a drive assembly, the drive assembly being provided on the carrying structure, the drive assembly being adapted to drive the balancer to move within the chamber, the carrying structure being in contact with an inner wall of the chamber and being adapted to move along the inner wall of the chamber during movement of the balancer to take over the centrifugal force experienced by the balancer as it moves within the chamber.

2. The counterbalance assembly of claim 1, wherein the bearing structure includes a bearing plate and rollers rotatably connected to the bearing plate and in contact with the inner wall of the chamber, the drive assembly being mounted on the bearing plate.

3. The balance assembly of claim 2, wherein the rolling element comprises a bearing and a rotating shaft, the rotating shaft is fixedly connected with the bearing plate, the rotating shaft penetrates through the bearing, and the bearing is sleeved on the rotating shaft.

4. The balance assembly of claim 1, wherein the drive assembly comprises a drive member and a rotating member, the drive member being coupled to the rotating member, the drive member being configured to drive the rotating member to rotate to move the balancer within the chamber.

5. The counterbalance assembly of claim 4, wherein an annular link is provided within the chamber, the link having teeth on an inner side thereof, and the rotatable member comprises a gear engaged with the teeth.

6. The counterbalance assembly of claim 4, wherein the drive assembly includes a speed adjustment structure connecting the drive member and the rotational member.

7. The counterbalance assembly of claim 6, wherein the speed adjustment structure includes a first stage transmission structure connected to the output shaft of the drive member and a second stage transmission structure connected to the first stage transmission structure and the rotating member.

8. The counterbalance assembly of claim 1, wherein the counterbalance comprises a bracket and a first guide structure, the first guide structure and the drive assembly being mounted to the bracket, a second guide structure being provided in the chamber, the second guide structure being connected to the first guide structure to guide movement of the counterbalance.

9. The counterbalance assembly of claim 8, wherein the first guide structure includes a guide member including a guide wheel and the second guide structure includes a guide rail, the guide wheel being movably coupled to the guide rail.

10. The counterbalance assembly of claim 9, wherein the guide member includes two guide wheels and a connecting rod, the two guide wheels being connected by the connecting rod, the guide track being partially located in a space between the two guide wheels.

11. The counterbalance assembly of claim 9, wherein the guide wheel is in resilient abutment with the guide rail.

12. The counterbalance assembly of claim 1, wherein the counterbalance assembly includes a flag and a displacement detector, the counterbalance assembly being configured such that relative movement of the flag and the displacement detector occurs when the drive assembly drives the counterbalance to move within the chamber, the displacement detector being configured to detect a number of times the flag passes the displacement detector, the number of times the flag passes the displacement detector being related to a position of the counterbalance.

13. The balance assembly according to claim 12, comprising a correcting member and a correction detecting member, wherein the balance assembly is configured such that, in a case where the balancer is moved, the correcting member and the correction detecting member are relatively moved, and the correction detecting member is configured to detect the correcting member to eliminate a position error of the balancer.

14. A domestic appliance comprising a body, a housing rotatably connected to the body, and a balance assembly according to any one of claims 1 to 13, the balance being mounted in the housing.