CN114941229A

CN114941229A - Washing machine

Info

Publication number: CN114941229A
Application number: CN202210764349.7A
Authority: CN
Inventors: 铃木成一郎; 姜振焱; 刘振华; 张旭
Original assignee: Hisense Refrigerator Co Ltd
Current assignee: Hisense Refrigerator Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-08-26

Abstract

The invention discloses a washing machine, relates to the technical field of household appliances, and aims to solve the problems that the movement of a balance block can only balance the centrifugal force generated by clothes in the radial direction, and the effect of weakening vibration is limited. The shell is internally provided with a containing cavity; the roller is rotatably arranged in the accommodating cavity, a plurality of cavities are arranged on the bottom wall of the roller, the wall plate is perpendicular to the axis of the roller, and the plurality of cavities are uniformly distributed along the circumferential direction of the roller; an acute angle or an obtuse angle is formed between the extending direction of the cavity and the wall plate of the roller; a balancing body is arranged in each cavity, and the balancing body can move in the cavity along the extending direction of the cavity; all be provided with the elastic component in every cavity, the one end and the balance body fixed connection of elastic component, the inner wall fixed connection of the other end and cavity, the deformation direction of elastic component is unanimous with the direction of motion of balance body. The invention is used for treating clothes.

Description

Washing machine

Technical Field

The invention relates to the technical field of household appliances, in particular to a washing machine.

Background

A washing machine is widely used in daily life as a common household appliance. The washing machine mainly comprises a shell and a drum, wherein the drum is rotatably arranged in the shell, and clothes are washed or dehydrated under the rotation of the drum.

When the clothes are dehydrated, the drum vibrates, and the vibration of the drum mainly comes from two aspects, on one hand, along the radial direction of the drum, because the clothes in the drum are distributed unevenly, a large centrifugal force is generated on one side of the drum, and therefore eccentric rotation is generated, so that vibration is generated. On the other hand, along the axial direction of the drum, the distribution of the clothes in the drum is not uniform, so that the centrifugal force generated by the clothes deviates from the center of gravity of the drum, and therefore, a torque is generated, and the drum generates a certain degree of torsional deformation, thereby generating vibration.

In the prior art, in order to weaken vibration, a balance ring is installed on the bottom wall of the drum, a balance block inside the balance ring can move along the circumferential direction of the drum, and when the drum rotates eccentrically, the balance block can automatically move to the side opposite to the eccentric position to balance the centrifugal force generated by the clothes. However, the movement of the balance weight can only balance the centrifugal force generated by the laundry in the radial direction, and the torque generated by the laundry in the axial direction of the drum has no balancing effect. Therefore, the effect of damping vibration is limited.

Disclosure of Invention

Embodiments of the present invention provide a washing machine to solve the problem that the movement of a balance weight can only balance the centrifugal force generated by the laundry in the radial direction, and the effect of reducing vibration is limited.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

a washing machine comprises a shell, a roller, a balancing body and an elastic piece, wherein the shell is internally provided with a containing cavity; the roller is rotatably arranged in the accommodating cavity, a plurality of cavities are arranged on a wall plate of the roller, the wall plate is perpendicular to the axis of the roller, the cavities are uniformly distributed along the circumferential direction of the roller, and an acute angle or an obtuse angle is formed between the extending direction of the cavities and the wall plate of the roller; a balancing body is arranged in each cavity, and the balancing body can move in the cavity along the extending direction of the cavity; an elastic piece is arranged in each cavity, one end of each elastic piece is fixedly connected with the balance body, the other end of each elastic piece is fixedly connected with the inner wall of each cavity, and the deformation direction of each elastic piece is consistent with the movement direction of the balance body.

According to the washing machine provided by the embodiment of the invention, the drum rotates in the shell, so that the washing or dewatering of clothes is realized. During the rotation of the drum, centrifugal force is generated, and under the action of the centrifugal force, the balancing body moves towards the direction far away from the axis of the drum. Because the elastic part is fixed between the inner wall of the cavity and the balance body, when different centrifugal forces are applied to the balance body, the compression degrees of the elastic part are different, and the moving distances of the balance body are different. And because the extending direction of the cavity and the wall plate of the roller form an obtuse angle or an acute angle, and the wall plate is perpendicular to the axis of the roller, when the balance body moves, the balance body can have a movement displacement along the radial direction of the roller and a movement displacement along the axial direction of the roller, so that the balance body can transmit the force generated by the balance body to the inner wall of the cavity through the elastic piece and further to the roller, and the radial centrifugal force and the axial torque generated in the rotating process of the roller are balanced.

Since the displacement of the balancing body in the radial direction of the drum varies the magnitude of the centrifugal force of the balancing body, the centrifugal force generated by the laundry in the drum in the radial direction of the drum can be balanced by the movement of the balancing body during the rotation of the drum. Since the displacement of the balancing body in the axial direction of the drum changes the torque of the balancing body, the torque generated by the laundry in the drum can be balanced by the movement of the balancing body during the rotation of the drum. The balancing body is arranged and can generate displacement along the axial direction and the radial direction of the drum so as to balance the centrifugal force along the radial direction of the drum and the torque along the axial direction generated by clothes in the drum. To reduce vibration of the drum. Compared with the related art, the washing machine provided by the embodiment of the application has the advantages that the balancing body can balance the moment generated by clothes in the drum along the axial direction of the drum, so that the balancing effect is better.

In some embodiments of the present application, the extending direction of the cavity intersects with the axis of the drum.

In some embodiments of the present application, a damping medium is disposed inside the cavity, the damping medium being configured to reduce vibration amplitude during movement of the balance mass.

In some embodiments of the present application, the damping fluid is filled inside the cavity.

In some embodiments of the present application, a drum includes a drum body and a plurality of fixing blocks, a wall plate is located on the drum body; the fixed block is fixedly arranged on the wall plate, the fixed block and the cavity are arranged in a one-to-one correspondence mode, and the cavity is arranged inside the fixed block.

In some embodiments of the present application, the wall plate is a bottom wall of the drum body, and the fixing block is fixed to an outside of the drum body.

In some embodiments of the application, the fixing block includes a fixing block body and a cover body, the fixing block body is fixed with the bottom wall, and the cavity is arranged on the fixing block body; the cover body is buckled at the first opening of the fixing block body.

In some embodiments of the present application, the washing machine includes a fixed tray fixedly connected with the bottom wall and coaxially disposed with the drum body, and a plurality of fixing bases; a plurality of fixed baseplate distribute along the circumference of fixed disk, and a plurality of fixed baseplate all with fixed disk fixed connection, fixed baseplate and fixed block one-to-one setting to fixed baseplate and fixed block fixed connection.

In some embodiments of the present application, the elastic member includes a spring, one end of the spring is fixedly connected to the balance body, and the other end of the spring is fixedly connected to the inner wall of the cavity.

In some embodiments of the present application, the washing machine further includes a balance ring and a sliding block, the balance ring is sleeved on the side wall of the drum and is fixedly connected with the drum, an annular channel is formed inside the balance ring, and the annular channel is arranged along the circumferential direction of the drum; the sliding block is arranged in the annular channel and can move along the annular channel.

Drawings

Fig. 1 is a first external structural view of a washing machine provided in an embodiment of the present application;

fig. 2 is an external structural view in the related art of the present application;

fig. 3 is a second external structural view of a washing machine provided in an embodiment of the present application;

fig. 4 is a third external structural view of a washing machine provided in an embodiment of the present application;

fig. 5 is a fourth external structural view of the washing machine provided in the embodiment of the present application;

FIG. 6 is a first enlarged partial view of the washing machine provided in the embodiment of the present application;

FIG. 7 is a second enlarged partial view of the washing machine provided in the embodiment of the present application;

fig. 8 is a fifth external structural view of a washing machine provided in an embodiment of the present application;

fig. 9 is a sixth external structural view of the washing machine provided in the embodiment of the present application;

fig. 10 is a seventh external structural view of the washing machine provided in the embodiment of the present application;

fig. 11 is an eighth external structural view of the washing machine provided in the embodiment of the present application;

fig. 12 is a ninth external structural view of a washing machine provided in an embodiment of the present application;

fig. 13 is a tenth external structural view of a washing machine provided in an embodiment of the present application;

fig. 14 is an eleventh external structural view of a washing machine provided in an embodiment of the present application;

fig. 15 is a twelfth external structural view of a washing machine provided in an embodiment of the present application;

fig. 16 is a thirteenth external structural view of the washing machine provided in the embodiment of the present application;

fig. 17 is a fourteenth external structural view of the washing machine provided in the embodiment of the present application;

fig. 18 is a first external structural view of a fixing block provided in the embodiment of the present application;

fig. 19 is a second external structural view of a fixing block provided in the embodiment of the present application;

fig. 20 is a fifteenth external structural view of the washing machine provided in the embodiment of the present application.

Reference numerals: 10-washing machine; 100-a housing; 110-an outer barrel; 120-a resilient means; 200-a roller; 210-a bottom wall; 220-a wall plate; 230-a drum body; 240-fixed block; 241-a fixed block body; 242-a cover body; 243-a seal; 300-a balance ring; 310-a weight; 400-cavity; 500-a balance; 600-an elastic member; 610-a spring; 700-a damping medium; 710-damping fluid; 720-an air damper; 800-fixing the disc; 810-a fixed base; 900-a balancing ring; 910 — slider.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

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

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A washing machine is widely used in daily life as a common household appliance. As shown in fig. 1, the present application provides a washing machine 10 including a casing 100 and a drum 200, wherein a receiving cavity is formed in the casing 100, and the drum 200 is rotatably disposed in the receiving cavity. The laundry is placed in the drum 200, and the drum 200 is rotated to wash or dehydrate the laundry.

It can be understood that the washing machine 10 may be a drum washing machine or a pulsator washing machine, and the present application is not limited thereto. The drum 200 refers to a drum having at least a dehydration function, such as an inner drum of a single-drum washing machine (drum washing machine) as shown in fig. 1, and a dehydration tub of a double-drum washing machine.

When the laundry is dehydrated, centrifugal force is generated in the laundry in the drum 200, and due to the reason that the water content of the laundry is different and the material of the laundry is different, the centrifugal force generated in different sides of the drum 200 is different during the rotation of the drum 200, and after the centrifugal force is balanced and offset, as shown in fig. 2, a centrifugal force F1 is finally generated in one side of the drum 200, the drum 200 is eccentrically rotated by the centrifugal force F1, and the drum 200 collides with the casing 100 (or the outer tub) during the eccentric rotation, and generates severe vibration.

In order to balance the centrifugal force F1 to eliminate vibration, as shown in fig. 2, the related art related to the present application provides a washing machine 10, which includes a balance ring 300, the balance ring 300 is disposed at the bottom of the drum 200, a channel is disposed inside the balance ring 300, the channel is disposed along the circumferential direction of the drum 200, a plurality of balance blocks 310 are disposed inside the channel, and the balance blocks 310 can move in the channel.

The balance ring 300 is disposed at the bottom of the drum 200, as shown in fig. 2, a maximum centrifugal force point occurs on the drum 200 during the rotation of the drum 200, and after the rotation speed of the drum 200 reaches a resonance point (the rotation frequency of the drum 200 reaches the natural frequency of the washing machine 10), for example, the resonance point of the drum washing machine is generally around 300rpm, the maximum centrifugal force point is located at a side opposite to the centrifugal force F1, so that the balance weight 310 can move to a side opposite to the centrifugal force F1 under the action of the maximum centrifugal force, and since the balance weight 310 moves to a side opposite to the centrifugal force F1 (as shown in fig. 2), the centrifugal force at the side where the balance weight 310 is located increases, and since the centrifugal force generated by the balance weight 310 is opposite to the centrifugal force F1, the balance weight 310 and the centrifugal force can balance each other. To reduce the eccentric rotation of the drum 200 caused by the centrifugal force F1, thereby balancing the centrifugal force F1 in the radial direction of the drum 200. Vibration damping of the washing machine 10 is achieved.

However, as shown in fig. 3, the balancing ring 300 can only balance the centrifugal force in the radial direction of the drum 200 (the position of the dashed circle shown in fig. 3), and when the centrifugal force F1 deviates from the center of gravity G of the drum 200 in the axial direction of the drum 200, for example, when the centrifugal force F1 deviates from the center of gravity G of the drum 200, such as the solid circle on the right side of the dashed circle shown in fig. 3, the center of gravity G and the eccentric force F1 generate a distance difference in the axial direction of the drum 200, so that the drum 200 generates a torque (the product of the distance between the center of gravity G and the distance between the center of gravity F1 and the distance between the center of gravity F1 in the axial direction of the drum 200) under the action of the centrifugal force F1, and the torque may generate a certain degree of torsional deformation of the drum 200, so that the drum 200 vibrates, and the balancing ring 300 has no balancing effect, and therefore, the damping effect is poor.

Based on this, as shown in fig. 4, a plurality of cavities 400 are provided on the wall plate 210 of the drum 200 provided in the present application, the wall plate 210 is perpendicular to the axis of the drum 200, for example, the wall plate 210 may be the bottom wall of the drum 200, the plurality of cavities 400 are uniformly distributed along the circumferential direction of the drum 200, as shown in fig. 5, the extending direction of the cavities 400 forms an acute angle or an obtuse angle with the wall plate 210 of the drum 200; the washing machine 10 provided by the present application further includes a balance body 500 and an elastic member 600, the balance body 500 is disposed inside each cavity 400, and the balance body 500 can move inside the cavity 400 along the extending direction of the cavity 400; all be provided with elastic component 600 in every cavity 400, elastic component 600's one end and balance body 500 fixed connection, the other end and the inner wall fixed connection of cavity 400, elastic component 600's deformation direction is unanimous with balance body 500's direction of motion.

During the rotation of the drum 200, a centrifugal force is generated, and the balance body 500 moves away from the axis of the drum 200 by the centrifugal force. Due to the elastic member 600, when different centrifugal forces are applied to the balance body 500, the degree of compression exhibited by the elastic member 600 may be different, and the distance that the balance body 500 moves may be different. And since the extending direction of the cavity 400 is obtuse or acute with respect to the wall 210 of the drum 200, and the wall 210 is perpendicular to the axis of the drum 200, when the balance body 500 moves, the balance body 500 has a movement displacement along the radial direction of the drum 200 and a movement displacement along the axial direction of the drum 200, so that the balance body 500 can transmit the force generated by itself to the inner wall of the cavity 400 through the elastic member 600 and further to the drum 200, thereby balancing the centrifugal force in the radial direction and the torque in the axial direction generated during the rotation of the drum 200.

Specifically, since the displacement of the balancing body 500 in the radial direction of the drum 200 varies the magnitude of the centrifugal force of the balancing body 500, the centrifugal force generated in the radial direction of the drum 200 by the laundry in the drum 200 can be balanced by the movement of the balancing body 500 during the rotation of the drum 200. Since the displacement of the balancing body 500 in the axial direction of the drum 200 varies the amount of torque of the balancing body 500, the amount of torque generated by the laundry in the drum 200 can be balanced by the movement of the balancing body 500 during the rotation of the drum 200. By arranging the balancing body 500 and displacing the balancing body 500 in both the axial direction and the radial direction of the drum 200, the centrifugal force in the radial direction of the drum 200 and the torque in the axial direction of the drum 200 generated by the laundry in the drum 200 are balanced. To reduce vibration of the drum 200. Compared with the related art, the washing machine 10 provided by the embodiment of the present application has a better balancing effect because the balancing body 500 can balance the moment generated by the laundry in the drum 200 along the axial direction of the drum 200.

In some embodiments, two, three, four, five, six, seven, eight or more cavities 400 may be provided, and as the number of the cavities 400 is increased, the total weight of all the balance bodies 500 is heavier, and the balancing effect is better. In addition, as shown in fig. 6, two, three or more balancing bodies 500 may be disposed in each cavity 400, and each two balancing bodies 500 are fixedly connected to each other, compared to this, only one balancing body 500 may be disposed in each cavity 400, that is, the cavities 400 and the balancing bodies 500 are disposed in a one-to-one correspondence, and one balancing body 500 is disposed in each cavity 400, so that the movement of the balancing body 500 is not affected by other components, and the movement is smoother. In this case, the balancing effect can be enhanced by increasing the weight of the balancing body 500.

In addition, the balancing body 500 may be formed in a spherical shape, and all surfaces of the spherical balancing body 500 are smooth curved surfaces, so that when the balancing body moves in the cavity 400, the friction force with the inner wall of the cavity 400 is smaller, and the movement is smoother. Of course, the balance 500 may have a rectangular parallelepiped shape or a rectangular parallelepiped shape. The balance body 500 may be made of a metal material or a resin material, and the present application is not limited thereto.

In addition, in order to make the moving displacement of the balancing body 500 on the side where the centrifugal force F1 is located different from that of the balancing body 500 on the opposite side of the centrifugal force F1, the elastic member 600 can transmit the force generated by the balancing body 500 and limit the moving displacement of the balancing body 500, so as to prevent the balancing body 500 from moving to the end of the cavity 400, and it can be ensured that there is a displacement difference between the balancing body 500 on the side where the centrifugal force F1 is located and the balancing body 500 on the opposite side of the centrifugal force F1, so as to ensure that the balancing body 500 can balance the centrifugal force generated by the laundry in the drum 200 in the radial direction of the drum 200 and the torque in the axial direction of the drum 200.

As shown in fig. 7, the elastic member 600 may include a spring 610, one end of the spring 610 is fixedly connected to the balance 500, and the other end of the spring 610 is fixedly connected to the inner wall of the chamber 400. The springs 610 provide resistance to the movement of the balance body 500, and prevent the balance body 500 located at the side where the centrifugal force F1 is located and the balance body 500 located at the opposite side of the centrifugal force F1 from finally moving to one end of the chamber 400. At the same time, the force generated by the balance body 500 can be transmitted to the inner wall of the cavity 400. The spring 610 is inexpensive and relatively easy to purchase, which reduces cost.

In some embodiments, one end of the spring 610 is fixedly connected to the balance body 500, and the other end of the spring 610 is fixedly connected to the inner wall of the cavity 400, a screw may be disposed on the inner wall of the cavity 400, and an end of the spring 610 is wound and fixed on the screw, for example, the end of the spring 610 and the screw are welded together by welding; then, a screw is provided on the balance body 500, and the other end of the spring 610 is fixed to the screw, and the end of the spring 610 and the screw are welded together by, for example, welding. Thereby realizing the fixed connection of the balance body 500 and the inner wall of the chamber 400 with the spring 610, respectively.

Wherein, the spring 610 may be disposed at a side of the balancing body 500 away from the axis of the drum 200; or may be disposed at one side of the balancing body 500 close to the axis of the drum 200; or two springs 610 may be further provided in the chamber 400, one spring 610 of the two springs 610 is disposed at a side of the balance body 500 close to the axis of the drum 200, and the other spring 610 of the two springs 610 is disposed at a side of the balance body 500 away from the axis of the drum 200. By providing two springs 610, both springs 610 can act on the balance 500.

Or, the elastic member 600 may also include a rubber block having elasticity, one side of the rubber block is fixedly connected with the balance body 500, and the other side of the rubber block is fixedly connected with the inner wall of the cavity 400. A rubber block is used as the elastic member 600 to restrict the movement of the balance body 500 and perform the transmission of force.

In addition, as shown in fig. 8, the extending direction of each cavity 400 intersects with the axis of the drum 200. At this time, during the movement of the balance body 500 along the extending direction of the cavity 400, only a component force along the radial direction of the drum 200 and a component force along the axial direction of the drum 200 can be generated, and a component force in other directions is not generated, thereby reducing the loss of force. Therefore, the component force generated in the radial direction of drum 200 by balance 500 is in the same direction as the centrifugal force generated by drum 200, and the component force in the axial direction is in the same direction as the torque generated by drum 200, thereby achieving a more preferable balance effect. Alternatively, as shown in fig. 9, the extending direction of the cavity 400 may not intersect with the axis of the drum 200.

For a clearer understanding of the balance principle of the balance body 400 in the present application, two balance bodies 500 are provided as an example, and the movement of the balance body 500 during the specific dehydration process is illustrated. Wherein centrifugal force F1 refers to: during the rotation of the drum 200, centrifugal forces generated by the laundry at various positions in the drum 200 along the circumferential direction of the drum 200 are balanced and offset with each other, and a centrifugal force in a certain direction is finally formed.

For convenience of description, a plane passing through the axis of the drum 200, perpendicular to the bottom wall of the drum 200, and parallel to the horizontal plane is defined as a dividing plane (an imaginary line passing through the center of the bottom wall of the drum 200 in fig. 10, and an imaginary line at the axis of the drum 200 in fig. 11 and 12). The division plane divides the drum 200 into a first part (upper side of the division plane in fig. 10) and a second part (lower side of the division plane in fig. 10), and the two balance bodies 500 are respectively located at both sides of the division plane. Wherein the centrifugal force F1 is located on the side of the first part.

In the first case, as shown in fig. 10, the torque generated by the centrifugal force F1 is balanced in the axial direction of the drum 200, and only the centrifugal force F1 in the radial direction of the drum 200 is balanced. When the initial position of the balance body 500 in the chamber 400 is fixed, since the displacement L1 of the balance body 500 on the second part in the radial direction of the drum 200 is greater than the displacement L2 of the balance body 500 on the first part in the radial direction of the drum 200, the centrifugal force F2 of the balance body 500 on the second part is greater than the centrifugal force F3 of the balance body 500 on the first part. Therefore, centrifugal force F2 can balance centrifugal force F1 after balancing centrifugal force F3, so that centrifugal force F1 is reduced and the vibration amplitude of washing machine 10 is reduced.

In the second case, the torque generated by the centrifugal force F1 is balanced in the axial direction of the drum 200. In this case, the following two cases may be included.

For convenience of description, it is defined that the center of gravity G of the drum 200 is located at a position inside the drum 200 near the bottom wall of the drum 200, and the distance F1 from the center of gravity G in the axial direction of the drum 200 is L3; the starting positions of all the balancing bodies 500 are equally spaced from the center of gravity G of the drum in the axial direction of the drum 200.

First, as shown in fig. 11, when the centrifugal force F1 is located on the side of the center of gravity G away from the wall plate 210 in the axial direction of the drum 200. At this time, F1 generates a torque M1(L3 multiplied by F1) around the center of gravity G, and since F1 is upward, the direction of M1 is counterclockwise.

Due to the presence of M1, a moment M2 opposite to M1 needs to be generated between the balance 500 on the first part and the balance 500 on the second part to balance M1. Specifically, the moving displacement of the balance body 500 on the first part in the axial direction of the drum 200 is larger than the moving displacement of the balance body 500 on the second part in the axial direction of the drum 200 under the centrifugal force, so that there is a distance difference L4 between the balance body 500 on the first part and the balance body 500 on the second part in the axial direction of the drum 200, and there is a torque M2 around the center of gravity G between them due to the distance difference L4 (L4 is multiplied by the weight of the balance body 500); since the distance moved by the balance body 500 on the first part is greater, the elastic shape change of the elastic member 600 is greater, and the force acting on the roller 200 is greater, so the direction of M2 is determined by the direction of the balance body 500 on the first part, and the direction of the balance body 500 on the first part is toward the upper right side as shown in fig. 11, so the direction of M2 is clockwise. Since the directions of M1 and M2 are opposite, M2 and M1 balance and cancel each other, so that the torque generated by the centrifugal force F1 can be reduced, and the vibration of the drum 200 can be reduced.

Second, as shown in fig. 12, when the centrifugal force F1 is located between the gravity center G and the wall plate 210 in the axial direction of the drum 200. At this time, F1 generates a torque M3(L5 multiplied by F1) about the center of gravity G, and since F1 is upward, the direction of M3 is clockwise.

Due to the presence of M3, a moment M4 opposite to M3 needs to be generated between the balance 500 on the first part and the balance 500 on the second part to balance M3. Specifically, the movement displacement of the balancing body 500 on the second portion in the axial direction of the drum 200 is greater than the displacement of the balancing body 500 on the first portion in the axial direction of the drum 200 by the centrifugal force, there is a distance difference L6 between the balance body 500 on the first portion and the balance body 500 on the second portion in the axial direction of the drum 200, due to the distance difference L6, there is a torque M4 around the center of gravity G (L6 multiplied by the weight of the balance 500), since the distance moved by the balance body 500 on the second portion is greater, the elastic shape change of the elastic member 600 is greater, the force acting on the drum 200 is greater, so the direction of the torque M4 is determined by the direction of the force of the balance 500 on the second part, since the direction of the balance 500 force on the second part is toward the lower right as in fig. 12, the direction of M4 is counterclockwise. Since M3 and M4 act on the center of gravity G at the same time and in opposite directions, M4 and M3 can balance and cancel each other out, and torque M3 generated by centrifugal force F1 can be reduced, thereby reducing vibration of drum 200.

On this basis, in order to avoid the violent collision of the balancing body 500 with the inner wall of the cavity 400 in the cavity 400, as shown in fig. 13, the washing machine 10 provided by the present application further includes a damping medium 700, and the damping medium 700 is used for reducing the vibration amplitude during the movement of the balancing body 500. The damping medium 700 is disposed inside the cavity 400, and the damping medium 700 can reduce the vibration amplitude of the balance body 500 during the movement process, so that the balance body 500 does not suddenly collide with the inner wall of the cavity 400 during the movement process of the balance body 500, and the vibration generated by the balance body 500 can be reduced.

As shown in fig. 14, the damping medium 700 may include a damping fluid 710, for example, the damping fluid 710 may be oil, silicone oil, lubricating oil, or the like, and the damping fluid 710 is filled in the cavity 400. The damping fluid 710 can not only reduce the vibration, but also lubricate the balance body 500, so as to make the balance body move more smoothly in the chamber 400.

Alternatively, as shown in fig. 15, the damping medium 700 may include an air damper 720, and the damping medium of the air damper 720 is air, which attenuates the vibration of the balance body 500 by utilizing the viscosity of the air. In the operation process, since the air is not adhered to the balance body 500, when the balance body 500 is taken out, the damping medium is not adhered to the balance body 500. In addition, the viscosity of the air is not greatly changed along with the temperature, so the performance is stable.

The wall plate 210 of the drum 200 (the bottom wall of the drum 200) is an essential component of the washing machine 10, and is generally thin, and if the cavity 400 is directly formed on the wall plate 210, the wall plate 210 may be damaged.

Accordingly, as shown in fig. 16, the drum 200 provided by the present application includes a drum body 230 and a plurality of fixing blocks 240, and a wall plate 210 is located on the drum body 230; the fixing blocks 240 are fixedly arranged on the wall plate 210, the fixing blocks 240 and the cavities 400 are arranged in a one-to-one correspondence manner, and the cavities 400 are arranged inside the fixing blocks 240.

Because the fixing block 240 is an additional component, the thickness and size of the fixing block 240 can be set as required, and the fixing block 240 can be arranged to avoid direct operation on the wall plate 210 of the roller 200, thereby reducing the difficulty in opening the cavity 400. Moreover, since the fixing block 240 is a separately installed component, when the fixing block is added to an old product (without the balancing body 500), the fixing block can be directly fixed to the wall plate 210 of the drum body 230, and the old product does not need to be reworked or modified, which is more convenient.

It can be understood that the fixing block 240 may be made of a metal material, and the fixing block 240 made of a metal material has high structural strength, so that the formed cavity 400 has a stable structure and is not deformed. Of course, the fixing block 240 may also be made of plastic, and the fixing block 240 made of plastic has light weight, so that the driving load of the motor of the washing machine 10 may be reduced. In addition, the fixing block 240 may be a rectangular parallelepiped, a square, or another irregular shape, and the shape of the fixing block 240 does not affect the extending direction of the cavity 400.

When the wall plate 210 is the bottom wall of the drum 200, the fixing block 240 may be disposed inside the drum 200 or outside the drum 200. The fixing block 240 is disposed outside the drum 200, the fixing block 240 does not occupy the inner space of the drum 200, and when the washing machine 10 is of the same specification, the fixing block 240 is disposed outside the drum 200, so that the washing machine 10 may have a larger accommodating space.

In this case, since the fixing block 240 is an independent member, it is not necessary to consider the size and structure of the cylinder diameter of the drum 200 when the fixing block 240 is attached to the bottom wall of the drum 200, and the versatility is strong.

In order to fix the fixing block 240 to the wall plate 210 of the drum body 230, the fixing block 240 may be welded to the wall plate 210 of the drum body 230, or the fixing block 240 may be fixed to the wall plate 210 of the drum body 230 by a screw fastening method, and the fixing block 240 may be removed from the wall plate 210 of the drum body 230 by a screw fastening method, and replaced or repaired as needed.

In addition, as shown in fig. 16, the fixing block 240 may be directly fixed to the wall plate 210 of the roller body 230, and the fixing block 240 may be directly fixed to the wall plate 210 of the roller body 230, without using other components.

Alternatively, as shown in fig. 17, the washing machine 10 provided by the present application includes a fixed tray 800 and a plurality of fixed bases 810 (for example, the washing machine 10 includes a flange, and the flange includes the fixed tray 800 and the fixed bases 810), the fixed tray 800 is fixedly connected to the wall plate 210, and the fixed tray 800 is coaxially disposed with the drum body 230; a plurality of fixed baseplate 810 distribute along the circumference of fixed disk 800, and a plurality of fixed baseplate 810 all with fixed disk 800 fixed connection, fixed baseplate 810 and fixed block 240 one-to-one set up to fixed baseplate 810 and fixed block 240 fixed connection.

The flange is an essential component of the washing machine 10, and the flange of the washing machine 10 generally includes a plurality of fixing legs (fixing bases 810), and the plurality of fixing bases 810 are uniformly distributed along the circumferential direction of the fixing disc 800, so that the fixing block 240 can be directly fixed on the fixing base 810 without performing separate measurement and uniform division on the wall plate 210, and the mounting difficulty of the fixing block 240 can be reduced.

The cavity 400 is disposed in the fixing block 240, and the cavity 400 may be formed inside the fixing block 240 by using an integral molding technique. The fixing block 240 of the integrally formed structure has higher structural strength. In this case, in the process of forming the cavity 400, after the cavity 400 is partially formed, the operation is stopped, and the elastic member 600, the balance 500, and the like are placed in the cavity 400, and then the process is continued, and finally the elastic member 600, the balance 500, and the like are sealed in the cavity 400.

Alternatively, the fixing block 240 may be a separate structure, specifically, as shown in fig. 18, the fixing block 240 includes a fixing block body 241 and a cover 242, the fixing block body 241 is fixed to the wall plate 210, and the cavity 400 is opened on the fixing block body 241; the cover 242 is fastened to the first opening of the fixing block body 241.

The fixing block 240 is configured as a separate structure, when the balance body 500 and the elastic member 600 need to be installed, the cavity 400 can be exposed to the outside only by separating the cover body 242 from the fixing block body 241, and then the balance body 500 and the elastic member 600 are installed in the cavity 400, and finally the cover body 242 is covered. When the balance body 500 and the elastic member 600 need to be taken out, the cover 242 and the fixing block body 241 are separated, so that the balance body 500 and the elastic member 600 can be exposed to the outside. The installation and removal of the balancing body 500 and the elastic member 600 are facilitated.

In order to fixedly connect the cover 242 and the fixing block body 241, screws may be used for fastening, threaded holes are respectively formed in the cover 242 and the fixing block body 241, and the screws sequentially penetrate through the threaded holes in the cover 242 and the fixing block body 241 to fix the cover 242 and the fixing block body 241 together.

Or, the fixing block body 241 may be fixed in a clamping manner, a clamping hole is formed in the fixing block body 241, a clamping arm is arranged on the cover 242, and the clamping arm is clamped in the clamping hole, so that the fixing block body 241 is fixedly connected with the cover 242.

On the basis, in order to prevent the damping liquid 710 from flowing out from the gap between the cover 242 and the fixed block body 241, as shown in fig. 19, the washing machine 10 provided by the present application further includes a sealing member 243, such as a sealing ring, etc., the sealing member 243 is disposed at the gap between the fixed block body 241 and the cover 242, and the damping liquid 710 is sealed in the cavity 400 by the sealing member 243, so that the damping liquid 710 is not lost during the movement of the balancing body 500.

In some embodiments, the cavity 400 may also open directly onto the wall plate 210. The cavity 400 is directly opened on the wall plate 210, and other parts are not needed, so that the loss rate of parts can be reduced.

On this basis, in order to further reduce the vibration of the drum 200, as shown in fig. 20, the washing machine 10 provided by the present application further includes a balance ring 900 and a sliding block 910, the balance ring 900 is sleeved on the side wall of the drum 200, and the balance ring 900 is fixedly connected with the drum 200, an annular channel is opened inside the balance ring 900, and the annular channel is disposed along the circumferential direction of the drum 200; the sliding block 910 is disposed within the annular channel, along which the sliding block 910 is capable of moving.

The balancing ring 900 is disposed on the sidewall of the drum 200, and a maximum centrifugal force point occurs on the drum 200 during the rotation of the drum 200, and after the rotation speed of the drum 200 reaches a resonance point, the maximum centrifugal force point is located at a side opposite to the centrifugal force F1, so that the sliding block 910 can move to a side opposite to the centrifugal force F1 under the maximum centrifugal force, and since the sliding block 910 moves to a side opposite to the centrifugal force F1, the centrifugal force at the side where the sliding block 910 is located increases, and since the centrifugal force F4 generated by the sliding block 910 is opposite to the centrifugal force F1, the two can balance each other by offsetting each other, so as to balance the centrifugal force F1 in the radial direction of the drum 200.

The side wall of the drum 200 is provided with a balance ring 900, the bottom wall of the drum 200 is provided with a balance body 500, and the drum 200 is damped through the matching of the balance ring and the balance body.

In some embodiments of the present application, as shown in fig. 20, when the washing machine 10 is a drum washing machine, the drum 200 is an inner drum of the drum washing machine, the washing machine further includes an outer drum 110 and an elastic device 120, the outer drum 110 is disposed in the outer casing 100, the outer drum 110 is sleeved outside the drum 200, and the elastic device 120 is disposed between the outer drum 110 and the outer casing 100. Since the elastic means 120 is disposed between the outer wall of the outer tub 110 and the inner wall of the casing 100, when the drum 200 vibrates, causing the outer tub 110 to have a tendency to collide with the casing 100, the elastic means 120 can block the outer tub 110 from colliding with the casing 100, further reducing the vibration.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A washing machine, characterized by comprising:

a housing having a receiving cavity therein;

the wall plate of the roller is provided with a plurality of cavities, the wall plate is perpendicular to the axis of the roller, and the cavities are uniformly distributed along the circumferential direction of the roller; an acute angle or an obtuse angle is formed between the extending direction of the cavity and the wall plate of the roller;

the balancing body is arranged inside each cavity and can move inside the cavity along the extending direction of the cavity;

the elastic component, every all be provided with in the cavity the elastic component, the one end of elastic component with balance body fixed connection, the other end with the inner wall fixed connection of cavity, the deformation direction of elastic component with the direction of motion of balance body is unanimous.

2. A washing machine as claimed in claim 1, wherein the cavity extends in a direction intersecting an axis of the drum.

3. The washing machine as claimed in claim 1, further comprising a damping medium disposed inside the cavity, the damping medium for reducing vibration amplitude during the movement of the balance body.

4. The washing machine as claimed in claim 3, wherein the damping medium includes a damping liquid filled inside the cavity.

5. A washing machine as claimed in any one of claims 1 to 4, wherein the drum comprises:

the wall plate is positioned on the roller body;

the fixing blocks are fixedly arranged on the wall plate, the fixing blocks and the cavities are arranged in a one-to-one correspondence mode, and the cavities are arranged inside the fixing blocks.

6. A washing machine as claimed in claim 5 wherein the wall plate is a bottom wall of the drum body and the fixing block is fixed to an exterior of the drum body.

7. The washing machine as claimed in claim 5, wherein the fixing block comprises:

the fixed block body is fixed with the wall plate, and the cavity is formed in the fixed block body;

the cover body is buckled at the first opening of the fixing block body.

8. The washing machine as claimed in claim 6, further comprising:

the fixed disc is fixedly connected with the bottom wall and is coaxially arranged with the roller body;

a plurality of fixed baseplate, a plurality of fixed baseplate follow the circumference of fixed disk distributes, just a plurality of fixed baseplate all with fixed disk fixed connection, fixed baseplate with the fixed block one-to-one sets up, and fixed baseplate with fixed block fixed connection.

9. A washing machine as claimed in any one of claims 1 to 4 wherein the resilient member comprises a spring, one end of the spring being fixedly connected to the balance mass and the other end of the spring being fixedly connected to the inner wall of the chamber.

10. The washing machine as claimed in any one of claims 1 to 4, further comprising:

the balance ring is sleeved on the side wall of the roller and fixedly connected with the roller, an annular channel is formed in the balance ring and is arranged along the circumferential direction of the roller;

and the sliding block is arranged in the annular channel and can move along the annular channel.