CN113529357A

CN113529357A - Washing machine shock attenuation buffer unit and washing machine

Info

Publication number: CN113529357A
Application number: CN202010323199.7A
Authority: CN
Inventors: 李博; 邵长城; 祝令闯; 丁君明
Original assignee: Qingdao Jiaonan Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Jiaonan Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2021-10-22

Abstract

The invention discloses a washing machine and a shock absorption and buffering assembly thereof, wherein the shock absorption and buffering assembly comprises: a bracket detachably provided on a rotary tub of a washing machine; the buffer structure is arranged at the center of the bracket in a swinging manner; the buffer structure is provided with a connecting piece and a buffer piece, wherein the upper end of the connecting piece is positioned at the center of the support, and the lower end of the connecting piece is connected with the buffer piece. The damping buffer component can rotate along with the rotating barrel; when the clothes in the rotary barrel are not uniformly distributed, the rotary barrel generates a force deviating from the axial direction in the rotation process, the buffer structure can swing to one side opposite to the eccentric load of the clothes, the centrifugal force generated by the buffer structure is opposite to the centrifugal force generated by the eccentric load, and the centrifugal force generated by the eccentric load are balanced with each other, so that the eccentric influence is reduced, the automatic deviation correction effect is realized, the eccentric balance capability in the rotary barrel is favorably enhanced, and the effects of maintaining the integral balance of the washing machine, reducing the vibration of the box body and reducing the noise are realized.

Description

Washing machine shock attenuation buffer unit and washing machine

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a washing machine damping and buffering assembly and a washing machine.

Background

During the dewatering process of the washing machine, the clothes are always distributed in the dewatering barrel in an unbalanced manner due to the random distribution of the clothes, namely the eccentric load which is commonly known by us. When the dewatering barrel rotates at a high speed, the centrifugal force generated by the eccentric load is equivalent to the exciting force in forced vibration, so that the dewatering barrel can vibrate violently. The vibration of the dehydration barrel can cause the violent vibration of the whole machine. These vibrations not only produce loud noises and give users a sense of discomfort, but also greatly reduce the service life of the washing machine machinery and electrical parts. When the eccentric load is large, the damage of parts of the washing machine is even directly caused. Therefore, it is necessary to reduce the damage of the washing machine caused by the eccentric load as much as possible.

At present, the motion balance of the pulsator washing machine mainly depends on a balance ring and a suspender, and because the rotary barrel of the pulsator washing machine is limited by capacity and structure, and the height and the volume of the balance ring are relatively large, the balance ring is easy to collide with an outer barrel and other parts, so that the height and the actual opening size of the inner barrel can be reduced by the water balance ring, and the effective volume of the washing machine is reduced. And with the continuous expansion of the washing capacity of the washing machine, the dehydration rotating speed is continuously improved, and the requirements of the washing machine on controlling and balancing eccentric load are higher and higher.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

Disclosure of Invention

The invention provides a damping and buffering assembly of a washing machine, aiming at the problems in the prior art, which is beneficial to maintaining the balance of the washing machine, efficiently reducing the vibration of the washing machine during dehydration and reducing the noise.

In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:

a washing machine damper assembly comprising:

a bracket detachably provided on a rotary tub of a washing machine;

the buffer structure is arranged at the center of the bracket in a swinging manner;

the buffer structure is provided with a connecting piece and a buffer piece, wherein the upper end of the connecting piece is positioned at the center of the support, and the lower end of the connecting piece is connected with the buffer piece.

Further, after the bracket is mounted to the rotary tub, the buffer member is suspended on the bracket and is located in the rotary tub.

Furthermore, a through hole which extends axially and is used for the connecting piece to pass through is formed in the center of the support, the buffer structure is further provided with a limiting piece which is connected with the upper end of the connecting piece, and the size of the limiting piece is larger than that of the through hole.

Furthermore, a horn mouth-shaped transition surface is arranged between the lower end of the through hole and the lower end surface of the support.

Further, the ratio of the diameter of the lower port of the transition surface to the diameter of the through hole is 1.8-2.8.

Further, the ratio of the axial size of the transition surface to the diameter of the through hole is 0.8-1.2.

Furthermore, the limiting piece is spherical, an arc-shaped groove communicated with the through hole is formed in the upper end of the support, and the limiting piece is located in the arc-shaped groove.

Further, the arc-shaped groove is coaxial with the through hole.

Further, the buffer piece is spherical, and the connecting piece is a rope.

Furthermore, the connecting piece is rod-shaped, the connecting piece is hinged to the support, and the buffer piece is hinged to the connecting piece.

Further, the rotating barrel is provided with a barrel body, and the support is clamped at the upper end of the barrel body.

Furthermore, the rotating barrel is provided with a barrel body and a balance ring fixed on the barrel body, and the support is clamped on the balance ring.

Further, the support is provided with a support part extending along the radial direction and located at the top of the balance ring, and a clamping part extending along the axial direction and clamped at the inner side of the balance ring.

Further, the upper end face and the lower end face of the support are far away from each other in the direction close to the through hole.

Further, the bracket is of a circular plate-shaped structure.

Furthermore, the support is provided with a plurality of support legs which are uniformly distributed in the circumferential direction, and the support legs are clamped on the balance ring.

Further, the bracket is provided with a plurality of detachable rollers for realizing the moving and transporting function after the bracket is detached from the rotary barrel.

Further, the bracket is coaxially arranged with the rotary tub.

Furthermore, be connected for dismantling between connecting piece and the bolster set up the screw hole on the bolster be equipped with on the connecting piece with screw hole assorted screw.

Based on the washing machine damping and buffering assembly, the washing machine is further provided with the damping and buffering assembly, so that the balance of the washing machine is maintained, the vibration of the washing machine during dehydration is reduced efficiently, and the noise is reduced.

A washing machine comprising:

a box body;

the rotary barrel is rotatably arranged in the box body;

the shock absorption buffer assembly is detachably arranged on the rotary barrel.

Compared with the prior art, the invention has the advantages and positive effects that: the damping buffer component is detachably arranged on the rotary barrel and can rotate along with the rotary barrel; when the clothes in the rotary barrel are not uniformly distributed, the rotary barrel generates a force deviating from the axial direction in the rotation process, the buffer structure can swing to one side opposite to the eccentric load of the clothes, the centrifugal force generated by the buffer structure is opposite to the centrifugal force generated by the eccentric load, and the centrifugal force generated by the eccentric load are balanced with each other, so that the eccentric influence is reduced, the automatic deviation correction effect is realized, the eccentric balance capability in the rotary barrel is favorably enhanced, and the effects of maintaining the integral balance of the washing machine, reducing the vibration of the box body and reducing the noise are realized.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a shock absorbing and buffering assembly for a washing machine according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the cushion assembly of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

FIG. 4 is an enlarged schematic view of the through hole of FIG. 3;

FIG. 5 is an enlarged view of the engaging portion of FIG. 3;

figure 6 is a schematic illustration of the shock absorbing and cushioning assembly of figure 1 shown disassembled for shipping purposes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship based on the installation of the cushion assembly to the rotary tub as shown in the drawings, and the direction close to the axis of the cushion assembly is "inner", and vice versa. The terminology is for the purpose of describing the invention only and is for the purpose of simplifying the description, and is not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed and operated, and is not to be considered limiting of the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-6, which are embodiments of the damping and buffering assembly of the washing machine according to the present invention, the washing machine has a cabinet 300 and a rotatable rotary tub 200 in the cabinet 300, the washing machine is a pulsator washing machine, and an outer tub may be sleeved on the outer side of the rotary tub 200 or not.

A washing machine shock absorbing bumper assembly 100 comprising: the support 10 and the buffer structure 20, the support 10 is detachably arranged on the rotary barrel 200, and the buffer structure 20 is arranged at the center of the support 10 in a swinging manner; by providing the bracket 10, the shock-absorbing buffering assembly 100 can be provided to the rotary tub 200 and provide support for the buffering structure 20; through the arrangement of the buffer structure 20, when the clothes in the rotary barrel are not uniformly distributed, the rotary barrel generates a force deviating from the axial direction in the rotation process, the buffer structure can swing to one side opposite to the eccentric load of the clothes, the centrifugal force generated by the buffer structure is opposite to the centrifugal force generated by the eccentric load, the centrifugal force and the centrifugal force are balanced, the eccentric influence is reduced, and the automatic deviation rectifying function is achieved.

In the embodiment, the damping and buffering assembly is detachably arranged on the rotary barrel and can rotate along with the rotary barrel; when the clothes in the rotary drum are not uniformly distributed, the buffer structure can swing to the side opposite to the eccentric load of the clothes, the centrifugal force generated by the buffer structure is opposite to the centrifugal force generated by the eccentric load, and the buffer structure and the centrifugal force are balanced with each other, so that the eccentric influence is reduced, the eccentric balancing capacity in the rotary drum is favorably enhanced, and the effects of maintaining the integral balance of the washing machine, reducing the vibration of the box body and reducing the noise are achieved.

In this embodiment, referring to fig. 3, the buffering structure 20 has a buffering member 21 and a connecting member 22, the buffering member 21 is hung on the bracket 10 in a state where the bracket is mounted to the rotary tub 200, the buffering member 21 is located below the bracket 10, the buffering member 21 is located inside the rotary tub 200, and the connecting member 22 has an upper end located at the center of the bracket 10 and a lower end connected to the buffering member 21. Through setting up connecting piece 22, be favorable to realizing the suspension of bolster 21, realize the swing of bolster 21 in rotatory bucket 200 to can be through the length of adjustment connecting piece 22, adjust the amplitude that bolster 21 can swing, can provide the eccentric force of equidimension not. The buffer structure 20 is arranged at the center of the support 10, so that the support 10 is uniformly distributed in the circumferential direction, and the support 10 is prevented from generating a force deviating from the axial direction during rotation. It is preferable to arrange the center of gravity of the stand 10 on the center line thereof, the center line of the stand 100 being coincident with the axis of the rotary tub 200.

In this embodiment, the buffer 21 is spherical, and the connecting member 22 is a rope. By arranging the buffer member 21 to be spherical, the volume of the buffer member 21 is reduced, and the buffer member 21 is prevented from scraping clothes; the connecting member 22 is a rope, so that when the rotary drum 200 eccentrically shakes, due to the flexibility of the rope, flexible direction adjustment of the buffer member 21 is facilitated, the centrifugal force generated by the buffer member is opposite to the centrifugal force generated by the eccentric load, and balance can be achieved as soon as possible. The buffer member 21 is spherical, and may be a whole sphere, a hemisphere, or a half sphere.

In other embodiments, the buffer 21 may be provided in other shapes, such as square, oval, etc.; the connecting element 22 may also be configured as a rod, and the upper end of the connecting element 22 is hinged to the bracket 200 for realizing the swing of the buffer structure 20, and the connecting element 22 and the buffer element 21 may also be configured to be hinged.

In this embodiment, referring to fig. 3, an axially extending through hole 11 is formed in the center of the bracket 10, the through hole 11 is used for the connecting element 22 to pass through, the buffer structure 20 further has a limiting element 23 connected to the upper end of the connecting element 22, the size of the limiting element 23 is larger than that of the through hole 11, the limiting element 23 is located above the through hole 11, and the buffer element 21 is located below the through hole 11; the arrangement of the buffer structure 20 at the through hole 11 is facilitated by arranging the limiting piece 23 so that the upper end of the connecting piece 22 is connected with the limiting piece 23; and the limiting piece 23 can increase the contact area between the buffer structure 20 and the bracket 10, which is beneficial to uniformly applying the force of the buffer piece 21 during swinging to the bracket 10. Through setting up limiting piece 23 for buffer structure 20 is not fixed to support 10, when washing bucket 10 has great vibration, can make limiting piece 23 remove to drive the removal of connecting piece 22 and bolster 21, make vibration energy partly transfer to buffer structure 20 on, reach the shock attenuation effect, play absorbing effect. And the connecting piece 22 passes through the through hole 11, so that when the buffer piece 21 swings, the connecting piece 22 can move in the circumferential range of the through hole 11, which is beneficial to generating larger centrifugal force and is beneficial to balancing under eccentric load.

In other embodiments, the upper end of the connector 22 may be secured to the bracket 10.

In this embodiment, the limiting member 23 is spherical, an arc-shaped groove 12 communicated with the through hole 11 is formed at the upper end of the support 10, and the limiting member 23 is positioned in the arc-shaped groove 12; the arc-shaped groove 12 is arranged, so that the height of the shock absorption and buffering assembly 100 is reduced, interference between the shock absorption and buffering assembly 100 and the upper cover 400 after the shock absorption and buffering assembly 100 is installed on the rotary barrel 200 is avoided, and the upper cover 400 can be closed; when the limiting piece 23 moves due to vibration, the limiting piece 23 moves in the arc-shaped groove 12, and the limiting piece 23 is favorable for returning; preferably, an arc-shaped groove 12 is provided coaxially with the through hole 11.

In this embodiment, referring to fig. 4, a flared transition surface 111 is disposed between the lower end of the through hole 11 and the lower end surface of the bracket 10, and the flared transition surface 111 is disposed, so that when the buffer member 21 swings, the connecting member 22 is attached to the transition surface 111, the connecting member 22 is in contact with the arc surface, and abrasion to the connecting member 22 is avoided; and the radial outward widening through the transition surface 111 is facilitated, the radial swing distance of the buffer member 21 can be increased, and the buffering effect can be improved. Specifically, set up the ratio between the diameter L of port and the diameter R of through-hole under the transition face 111 and be 1.8 ~ 2.8, preferably set up L: r is 2; the ratio of the axial dimension H of the transition surface 111 to the diameter R of the through hole is 0.8-1.2, and preferably set as H: r is 1.

The connecting piece 22 is detachably connected with the buffer piece 21, and the connecting piece 22 and the buffer piece 21 can be fixedly connected by arranging a screw hole on the buffer piece 21 and fixing the screw fixedly arranged on the connecting piece 22 into the screw hole. The support 10 is convenient to detach the buffering structure 20, or the buffering structure 20 can be replaced, the buffering members 21 with different weights or the connecting members 22 with different lengths can be selected according to different clothes to be washed, so that eccentric force with different sizes can be provided, and the balance of the eccentric load can be better realized.

As for the arrangement of the support 10 and the rotary tub 200, there may be various implementation manners, and the support 10 may be arranged on the tub body 201 of the rotary tub 200, or the support 10 may be arranged on the balance ring 202 at the top of the tub body 201, or the support may be directly arranged at the upper end of the tub body 201 without arranging the balance ring on the rotary tub 200.

In the present embodiment, referring to fig. 1 and 5, the bracket 10 is clamped on the balance ring 202, the bracket 10 has a radially extending support portion 13, the support portion 13 is located at the top of the balance ring 202, the bracket 10 further has an axially extending clamping portion 14, and the clamping portion 14 is clamped inside the balance ring 202; the engaging portion 14 is provided with a radially outward engaging protrusion 141, and the engaging protrusion 141 is located at the inner lower end of the balance ring 202 to engage the bracket 10 with the balance ring 202. The support portion 13 and the engaging portion 14 are provided to engage the holder 10 with the gimbal 202, thereby detachably attaching the holder 10. Preferably, the balance ring 202 is provided with a limiting rib for limiting the circumferential movement of the engaging portion 14, so as to prevent the rotation of the bracket 10 with respect to the rotary tub 200 after the bracket is engaged with the balance ring 202, and ensure the firmness of the bracket 10 after being fixed.

In other embodiments, the bracket 10 may be provided on the gimbal 202 in other manners, such as by being fastened by screws, or other snap-fit structures.

Describing the structure of the support frame 10, the support frame 10 has a plurality of support legs 15 uniformly distributed in the circumferential direction, the support legs 15 are clamped on the balance ring 202, and the support frame 15 is provided with a supporting part 13 and a clamping part 14; a plurality of legs 15 are connected at the center of the stand 10. Preferably three legs 15 are provided.

In other embodiments, the bracket 10 may be configured as a circular plate-shaped structure, and the edge of the circular plate-shaped structure forms the annular supporting portion 13, which is beneficial to increase the contact area between the bracket 10 and the balancing ring 202 and is beneficial to support the bracket 10; an annular engaging portion 14 or a plurality of circumferentially spaced engaging portions 14 are provided to engage and fix the holder 10.

In this embodiment, the upper end surface and the lower end surface of the bracket 10 are away from each other in the direction close to the through hole 11, that is, the thickness of the bracket 10 is increased in the inward direction, which is beneficial to increasing the structural strength at the through hole 11 and ensuring the support of the buffer structure 20. Preferably, the upper end surface of the support 10 is a plane, and the lower end surface of the support 10 is obliquely arranged; interference between the damper assembly 10 mounted to the rotary tub 200 and other parts of the washing machine is prevented.

Referring to fig. 6, in order to increase the use of the stand 10, the stand 10 has a plurality of rollers 16 which are detachable, and after the rollers 16 are mounted to the stand 10 after the stand 100 is detached from the rotary tub 200, the stand 16 can be used as a mobile carrier; specifically, since the upper end surface of the stand 10 is a flat surface, the rollers 16 are installed on the upper end surface of the stand 10, and the stand 10 is turned upside down for use. In order to realize the pulling of the bracket 16, the pulling of the bracket 16 can be realized through the buffer structure 20, the buffer member 21 is pulled, the pulling force is transmitted to the limiting member 23 through the connecting member 22 and acts on the through hole 11 of the bracket 10, so that the movement of the bracket 10 is realized. In order to apply the pulling force, the buffer member 21 can be detached and replaced with a pull ring; the transportation function of the disassembled bracket 10 is realized.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A washing machine damper assembly, comprising:

a bracket detachably provided on a rotary tub of a washing machine;

2. The cushion assembly according to claim 1, wherein a through hole is opened at a center of the bracket to axially extend for the connection member to pass through, the cushion structure further having a restriction member connected to an upper end of the connection member, the restriction member having a size larger than that of the through hole.

3. The shock absorption and buffering assembly according to claim 2, wherein a flared transition surface is arranged between the lower end of the through hole and the lower end face of the bracket, and the ratio of the diameter of the lower end port of the transition surface to the diameter of the through hole is 1.8-2.8.

4. The cushion assembly of claim 2, wherein the limiting member is spherical, an arc-shaped groove communicating with the through hole is formed at the upper end of the bracket, and the limiting member is located in the arc-shaped groove.

5. The cushion assembly of claim 1, wherein the cushion is spherical and the connecting member is a rope.

6. The cushion assembly of claim 1, wherein the link member is rod-shaped, the link member is hingedly disposed on the bracket, and the cushion member is hingedly disposed on the link member.

7. The shock absorbing and cushioning assembly of any one of claims 1 to 6, wherein said rotating tub has a tub body and a gimbal fixed to said tub body, said bracket being snap-fitted to said gimbal.

8. The shock absorption and buffering assembly as claimed in any one of claims 1 to 5, wherein said connecting member is detachably connected to said buffering member, said buffering member is provided with a screw hole, and said connecting member is provided with a screw matching with said screw hole.

9. The shock absorbing and cushioning assembly of any one of claims 1 to 6, wherein said bracket has a plurality of removable rollers for effecting movement and transportation of the bracket after removal from said rotating tub.

10. A washing machine, characterized by comprising:

a box body;

the rotary barrel is rotatably arranged in the box body;

the shock-absorbing buffering assembly as set forth in any one of claims 1 to 9, which is detachably provided on the rotating tub.