CN116590885A

CN116590885A - Vibration damper for washing machine

Info

Publication number: CN116590885A
Application number: CN202310719806.5A
Authority: CN
Inventors: 高伟; 李晴; 胡承福; 郭澄昊
Original assignee: Helium 3 Technology Shenzhen Co ltd
Current assignee: Helium 3 Technology Shenzhen Co ltd
Priority date: 2023-06-17
Filing date: 2023-06-17
Publication date: 2023-08-15

Abstract

The invention relates to the technical field of vibration reduction devices of washing machines, and provides a vibration reduction device of a washing machine.

Description

Vibration damper for washing machine

Technical Field

The invention relates to the technical field of vibration reduction devices of washing machines, in particular to a vibration reduction device of a washing machine.

Background

The washing machine has become a necessity in daily life, and besides the washing ratio, the stability of the washing machine during washing and dewatering has become one of the consideration factors of consumers.

In order to achieve better vibration-proof effect, some washing machines utilize a certain gravity to reduce vibration generated in rinsing and dewatering processes of the washing machines by adding balancing weights such as cement, iron, concrete and the like in the machine body, but the vibration-proof mode makes the washing machines difficult to move, increases transportation cost and waste of resources.

Currently, there are also vibration damping methods for washing machines that rely on a vibration damper mounted on an outer tub of the washing machine, a spring suspended above the outer tub of the washing machine, and a damper supported below the outer tub of the washing machine. The vibration damper has a problem of increasing the body weight in order to achieve a good vibration damping effect as much as possible. The vibration reduction technology of the cooperation of the suspension spring and the vibration reduction cylinder cannot achieve better vibration reduction effect.

Therefore, the prior vibration reduction technology generally has the problems that the weight reduction cannot be realized, the effective volume of the inner tub of the washing machine is not designed and utilized to the maximum extent, and the like.

Disclosure of Invention

The invention provides a vibration damper for a washing machine, which can realize the vibration damping effect of the washing machine in a lighter weight manner, reduce the transportation cost and prolong the service life.

The technical scheme of the invention is as follows:

a vibration damper for washing machine is composed of main connecting frame, damping water tank with adjustable tuned mass, and water flowing structure.

Furthermore, inclined planes are arranged on two sides of the damping water tank with variable tuning quality.

Further, the bottom of the damping water tank with variable tuning quality is provided with an arc-shaped concave structure.

Further, a first vibration reduction layer, a second vibration reduction layer and a third vibration reduction layer are sequentially arranged in the variable tuning mass damping water tank from top to bottom, a first layer plate is arranged between the first vibration reduction layer and the second vibration reduction layer, and a second layer plate is arranged between the second vibration reduction layer and the third vibration reduction layer.

Further, the sections of the first layer plate and the second layer plate are of V-shaped structures and are obliquely arranged.

Further, the through structure comprises a first water port, a second water port and a third water port, wherein the first water port is communicated with the first vibration reduction layer, the second water port is communicated with the second vibration reduction layer, and the third water port is communicated with the third vibration reduction layer;

and the variable tuning mass damping water tank is also provided with a plurality of air pressure balance holes, and each air pressure balance hole is correspondingly communicated with the first vibration reduction layer, the second vibration reduction layer and the third vibration reduction layer one by one.

Further, a top beam is arranged at the top of the main connecting support, a plurality of suspension springs are arranged at the top of the variable tuning mass damping water tank, one end of each suspension spring is connected with the variable tuning mass damping water tank, and the other end of each suspension spring is connected with the top beam.

Further, including engine body shell and outer bucket, main linking bridge is located engine body shell inside, and engine body shell both sides all are equipped with the supporting beam, are equipped with a plurality of elastic support piece on the supporting beam, the outer wall and the each elastic support piece butt of outer bucket.

Further, the device comprises a plurality of spring dampers, wherein the horizontal height of the bottom of the main connecting support is higher than that of the bottom of the machine body shell, and two ends of each spring damper are respectively connected with the bottom of the machine body shell and the bottom of the main connecting support;

and each spring damper is obliquely arranged.

Further, the washing machine comprises a support frame connected with the machine body shell, wherein a roller fish eye bearing assembly used for being connected with an inner barrel of the washing machine is arranged on the support frame, and the roller fish eye bearing assembly is connected with a driven wheel;

comprises a driver and a reverse vibration damping mechanism for driving the driven wheel to rotate reversely with the driver.

The working principle and the beneficial effects of the invention are as follows:

1. for the vibration reduction technology of the traditional washing machine, the variable quality water tank vibration reduction system adopting the tuned damper as a principle is adopted in the embodiment, and one great advantage of tuned damping is that dynamic vibration absorption has extremely strong self-adaptive characteristics, and vibration energy of a main system is transferred to an added vibration reduction sub-device by measuring eccentric mass and injecting water with corresponding mass. The aims of vibration reduction and light weight are achieved together, and meanwhile, the transportation cost can be reduced.

2. According to the different vibration frequency scenes (divided into high vibration frequency and low vibration frequency) caused by eccentric mass vibration, the water level of the water tank is also required to be correspondingly treated, so that the water tank is divided into three layers, different layers are filled with water, the variable water tank vibration damping components can be divided into vibration damping components with different pendulum lengths, the water level is short pendulum when the water level is at the upper layer, the high-frequency vibration is treated, the water level is short pendulum when the water level is at the lower layer, and the high-frequency vibration is treated.

3. The variable tuning mass damping water tank is provided with a water port and an air pressure balance hole, and the water quantity is controlled through the water port, so that the mass adjustment of the tuning damper is realized.

4. The air pressure balance holes are arranged to balance the air pressure inside and outside the water tank, so that water injection and water discharge are facilitated.

5. The first layer plate and the second layer plate are of inclined V-shaped design, so that water can be discharged conveniently, and meanwhile, the water discharging efficiency is improved further.

6. The vibration transmitted to the main connecting bracket by the eccentric clothes through the transmission shaft connected with the inner barrel is further transmitted to the vibration reduction water tank as far as possible, and the vibration is reduced.

7. The waist both sides of organism shell are equipped with the crossbeam, are equipped with four elastic support pieces on the crossbeam respectively for cooperate with the stabilizer blade of outer bucket of washing, fixed outer bucket and give outer bucket a support, also play elastic support effect simultaneously, guarantee the in-process of supporting again and play the damping effect.

8. The spring damper is matched with a hanging point below the main connecting support to mount the spring damping vibration reduction cylinder at a relatively inclined angle, so that the main connecting support and internal components thereof are well supported in the vertical direction, and vibration of the whole washing machine in all directions can be well reduced, and the vibration of the whole washing machine is reduced.

9. The design and the matching of the vibration reduction structures in the invention can greatly reduce the swing amplitude of the inner barrel of the washing machine in the vibration process, and can greatly reduce the reserved gap between the inner barrel and the outer barrel or between the outer barrel and the machine body shell, so that the size of the inner barrel of the washing machine can be increased on the premise of unchanged volume and size of the machine body shell, and the maximum effective washing volume is obtained.

Drawings

The invention will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic view of the structure of the front part of the embodiment;

FIG. 2 is a schematic view of the structure of the rear part of the embodiment;

FIG. 3 is a schematic view of the structure of the main connecting bracket in the embodiment;

FIG. 4 is a front cross-sectional view of a variable tuning mass damper tank in an embodiment;

FIG. 5 is a side cross-sectional view of a variable tuning mass damper tank in an embodiment;

FIG. 6 is a schematic structural view of a reverse vibration damping mechanism in an embodiment;

FIG. 7 is a schematic diagram of an enhanced version of the embodiment;

fig. 8 is a schematic view of the structure at a roller fish eye bearing assembly in an embodiment.

In the figure: 11. a main connecting bracket; 111. a top beam; 112. a support beam; 12. a housing; 2. a variable tuning mass damping water tank; 21. an inclined plane; 22. an arc-shaped concave structure; 23. a first vibration damping layer; 24. a second vibration damping layer 25 and a third vibration damping layer; 26. a first laminate; 27. a second laminate; 281. a first water port; 282. a second water port; 283. a third water outlet; 29. an air pressure balance hole; 31. a suspension spring; 32. an elastic support block; 33. a spring damper; 34. a connecting rod; 5. an outer tub; 6. a roller fish eye bearing assembly; 71. a driver; 72. a regulating wheel; 73. a conveyor belt; 74. a support wheel; 75. driven wheel; 8. an inner barrel; 9. and a bearing frame.

Detailed Description

The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 3, a vibration damping device for a washing machine includes a main connection bracket 11 for supporting and mounting parts such as an inner tub 8 and an outer tub 5 of the washing machine. In order to further improve the vibration reduction effect of the washing machine and to reduce the weight of the washing machine, the present embodiment suspends the variable tuning mass damper water tank 2 on the main connection bracket 11, and is provided with a water passing structure on the variable tuning mass damper water tank 2, and the water amount of the variable tuning mass damper water tank 2 is changed by the water passing structure, thereby realizing variable tuning.

The damping water tank 2 with variable tuning mass in the embodiment is provided with inclined planes 21 on two sides, which can be matched with the top structure of the main connecting bracket 11, so that the occupied space is reduced, and meanwhile, the damping water tank can be combined with an arc-shaped concave structure 22 at the bottom to divide each region of the variable water tank into vibration reduction parts with different pendulum lengths. The arc-shaped concave structure 22 can also provide space for the arrangement of the outer tub 5 of the washing machine, thereby reducing the overall volume of the washing machine.

As shown in fig. 4, specifically, a first damping layer 23, a second damping layer 24 and a third damping layer 25 are sequentially disposed in the variable tuning mass damping water tank 2 from top to bottom, a first laminate 26 is disposed between the first damping layer 23 and the second damping layer 24, and a second laminate 27,3 is disposed between the second damping layer 24 and the third damping layer 25, and the two laminates are separated. Since the volumes and structures of the respective layers of the variable tuning mass damper water tank 2 are different, the water level is short-circuited when the water level is in the first vibration damping layer 23, and the water level is short-circuited when the water level is in the third vibration damping layer 25, and the water level is low-frequency.

In addition, in this embodiment, the cross sections of the first laminate 26 and the second laminate 27 are designed to be V-shaped and are inclined, and then the first water passage 281, the second water passage 282 and the third water passage 283 in the structure are connected with the first vibration damping layer 23, the second vibration damping layer 24 and the third vibration damping layer 25 respectively, and the first water passage 281, the second water passage 282 and the third water passage 283 are located at the low water level of each layer, so as to facilitate drainage. The first water port 281, the second water port 282 and the third water port 283 in the present embodiment all have water inlet and water outlet functions, and can be realized by connecting water inlet and water outlet pipes at the same time, which is not described in detail in the present embodiment.

In this embodiment, the variable tuning mass damping water tank 2 is further provided with a plurality of air pressure balance holes 29, and each air pressure balance hole 29 is correspondingly communicated with the first vibration reduction layer 23, the second vibration reduction layer 24 and the third vibration reduction layer 25, so as to balance the atmospheric pressure inside and outside each layer of the variable tuning mass damping water tank 2, thereby facilitating water injection and water drainage. The pressure balance hole 29 can be matched with a pressure release valve or be attached with a waterproof and breathable film for optimization and use.

In connection, the top of the main connecting bracket 11 in the embodiment is provided with a top beam 111, the top of the variable tuning mass damping water tank 2 is provided with a plurality of suspension springs 31, one end of each suspension spring 31 is connected with the variable tuning mass damping water tank 2, and the other end of each suspension spring 31 is connected with the top beam 111. The vibration generated during the operation of the washing machine is transmitted through the suspension spring 31, and a part of the vibration can be absorbed first and then transmitted to the variable tuning mass damping water tank 2, thereby further improving the vibration reduction effect of the present embodiment. A connecting rod 34 (or a shock absorber can be adopted to replace the connecting rod) is arranged between the inclined plane 21 and the main connecting bracket 11, and two ends of the connecting rod 34 are respectively hinged with the inclined plane 21 and the main connecting bracket 11 to play roles of auxiliary support, adjustment and shock absorption.

As shown in fig. 3, as another embodiment, the machine body casing 12 and the outer tub 5 may be added to the above embodiment, the main connection bracket 11 is disposed inside the machine body casing 12, the support beams 112 are disposed on both sides of the machine body casing 12, and the support beams 112 are provided with a plurality of elastic support blocks 32, so that the outer wall of the outer tub 5 is abutted against each elastic support block 32, and the vibration transmitted from the vibration of the outer tub 5 to the machine body casing 12 is reduced.

And, a plurality of spring dampers 33 are additionally arranged, the bottom of the main connecting bracket 11 is higher than the bottom of the machine body shell 12, two ends of each spring damper 33 are respectively connected with the bottom of the machine body shell 12 and the bottom of the main connecting bracket 11, and the main connecting bracket 11 is supported in an auxiliary way through the spring dampers 33. While also providing for each spring damper 33 to be inclined. The spring damping vibration reduction cylinder is installed at a relatively inclined angle, a relatively good supporting effect is achieved on the main connecting support 11 and the internal components of the main connecting support in the vertical direction, and vibration of the whole washing machine in all directions can be reduced relatively well, so that vibration of the whole washing machine is reduced.

The washing machine comprises a support frame connected with a machine body shell 12, wherein a roller fish-eye bearing assembly 6 used for being connected with an inner barrel of the washing machine is arranged on the support frame, the roller fish-eye bearing assembly 6 is arranged on the support frame, and the roller fish-eye bearing assembly 6 is combined with a roller bearing and a fish-eye bearing which are coaxially arranged. Through the cooperation of support frame and roller fish-eye bearing subassembly 6, utilize the characteristics that the required moment of roller bearing is little, the rotation precision is high, and the fish-eye bearing has great load capacity and shock resistance, corrosion resistance, stand wear and tear, self-aligning, characteristics such as lubricated well, transmit the vibration that is transmitted to main linking bridge 11 by eccentric clothing through the transmission shaft that interior bucket 8 connects to variable tuning mass damping water tank 2 as far as possible, and reduce partial vibration.

As shown in fig. 8 and 2, a bearing frame 9 for supporting the roller fish-eye bearing assembly 6 is arranged and fixed at the bottom of the machine body shell 12, and has a triangular structure, so that the roller fish-eye bearing assembly is firm and stable.

In addition to the above embodiment, a driven wheel 75 may be connected to the roller fish-eye bearing assembly 6, and a driver 71 (preferably a motor, mature and reliable) and a reverse vibration damping mechanism for driving the driven wheel 75 and the driver 71 to rotate in opposite directions may be added.

As shown in fig. 6, the reverse vibration damping mechanism can reduce the total rotational angular momentum of all the rotors and reduce the overall vibration. At least two embodiments may be included: one is to set up conveyer belt 73, regulation and control wheel 72 and a plurality of supporting wheel 74 in the driven wheel 75 outside, set up the action wheel on the output shaft of driver 71, then pass through conveyer belt 73 with regulation and control wheel 72 and action wheel and connect into the closed loop, the outer fringe of regulation and control wheel 72 and the outer fringe of action wheel all butt conveyer belt 73 inboard, the outside of conveyer belt 73 also sets up the driving surface to butt from the outer fringe of driving wheel 75. By such arrangement, in cooperation with the protective cover plate, for mounting and fixing the pulleys, the effect that the rotation direction of the output shaft of the driver 71 is opposite to the rotation direction of the driven wheel 75 can be achieved. Then, the regulating wheels 72 and the driven wheels 75 are spaced, and the regulating wheels are mainly used for supporting the inner side of the conveying belt 73, so that the contact area between the conveying belt 73 and the driven wheels 75 can be increased as much as possible, the resistance is increased, and the transmission efficiency is improved.

Alternatively, the driving wheel may be coupled to a driving wheel, and the driving wheel is linked to the driven wheel 75 or the rotation shaft of the inner tub 8 of the washing machine, and then the steering of the output shaft of the driver 71 may be realized by means of chain transmission, worm gear transmission or gear transmission, which is opposite to the steering of the inner tub 8 of the washing machine, which is not described in detail in this embodiment.

In the embodiment, a special-shaped water tank capable of filling water and discharging water to change weight is arranged, and then the special-shaped water tank is suspended at the top of the inner side of the main connecting bracket 11 through a damping spring. When the washing machine is driven, the inner tub 8 rotates, unbalance is caused by the eccentricity of the content (clothes and water), the washing machine as a whole vibrates (periodic simple harmonic vibration generated by the rotating unbalanced mass as a vibration source of the vibration system is called exciting force), relevant kinetic energy generated by the vibration is transmitted to the main connecting bracket 11 through the driving shaft of the inner tub 8, and further transmitted to the variable tuned mass damping water tank 2 through the main connecting bracket 11 through the suspension spring 31, and vibration is damped by the tuned mass damping water tank at this time.

Meanwhile, on the basis of two vibration reduction air columns or four vibration reduction air columns of the traditional washing machine, the product adopts six spring dampers 33, so that stronger supporting force is provided, and meanwhile, good vibration reduction effect is achieved.

Unlike the conventional vibration damping block of the conventional washing machine and the conventional vibration damping technology in which the air damping spring is directly mounted on the outer tub 5, the present embodiment creates the maximum inner tub 8 diameter to the greatest extent and achieves the light weight, and the main body is represented by a tuned damping water tank provided with variable mass (unlike the cement vibration damping block of fixed mass provided in the conventional washing machine), and the main connection bracket 11 is moved to the outside of the outer tub 5 (ensuring that the size of the inner tub 8 of the washing machine is as large as possible), and the vibration damping spring damper 33 is connected to the main connection bracket 11.

Further, as shown in fig. 3, the present embodiment is divided into the inner tub 8 and the outer tub 5, and the inner tub 8 is used for rotation and washing, and is coupled to the roller fish-eye bearing assembly 6 and the driven wheel 75 by a coupling member such as a rotation shaft, and the outer tub 5 is abutted to the elastic support block 32 on the main coupling bracket 11 in the above embodiment, so that the inner space of the main coupling bracket 11 can be utilized to the maximum extent, and the inner tub can be enlarged in size by enlarging the diameter of the outer tub 5, thereby obtaining the maximum effective volume of the inner tub 8.

As shown in fig. 7, as another embodiment, a base or a box with a function for supporting the housing of the machine body may be added to the above embodiment, and the machine is used as a high version.

In addition, the driver 71 of the inner barrel 8 drives the driving wheel, and the driving wheel drives the engaged driven wheel 75, so that the driven wheel 75 and the driver 71 realize reverse rotation, the driven wheel 75 is connected with a belt pulley in series, and the inner barrel 8 is driven to realize reverse rotation with the inner barrel 8 rotating motor.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. The vibration damper for the washing machine comprises a main connecting bracket (11), and is characterized in that a damping water tank (2) with variable tuning mass is suspended on the main connecting bracket (11), and a water through structure is arranged on the damping water tank (2) with variable tuning mass.

2. A washing machine vibration damper according to claim 1, characterized in that both sides of the variable tuning mass damping water tank (2) are provided with inclined surfaces (21).

3. A washing machine vibration damper according to claim 1 or 2, characterized in that the bottom of the variable tuning mass damping tank (2) is provided with an arc-shaped recess (22).

4. A vibration damper for washing machine according to claim 1 or 2, characterized in that the first vibration damping layer (23), the second vibration damping layer (24) and the third vibration damping layer (25) are sequentially arranged in the variable tuning mass damping water tank (2) from top to bottom, a first laminate (26) is arranged between the first vibration damping layer (23) and the second vibration damping layer (24), and a second laminate (27) is arranged between the second vibration damping layer (24) and the third vibration damping layer (25).

5. A damping device for washing machines according to claim 4, characterized in that the cross sections of the first (26) and second (27) laminates are of V-shaped configuration and are inclined.

6. A washing machine vibration damping device according to claim 4, characterized in that the through structure comprises a first water through opening (281), a second water through opening (282) and a third water through opening (283), the first water through opening (281) being in communication with the first vibration damping layer (23), the second water through opening (282) being in communication with the second vibration damping layer (24), the third water through opening (283) being in communication with the third vibration damping layer (25);

the variable tuning mass damping water tank (2) is also provided with a plurality of air pressure balance holes (29), and each air pressure balance hole (29) is correspondingly communicated with the first vibration reduction layer (23), the second vibration reduction layer (24) and the third vibration reduction layer (25) one by one.

7. A washing machine vibration damper according to claim 1 or 2, characterized in that the top of the main connecting bracket (11) is provided with a top beam (111), the top of the variable tuning mass damping water tank (2) is provided with a plurality of suspension springs (31), one end of each suspension spring (31) is connected with the variable tuning mass damping water tank (2), and the other end of each suspension spring (31) is connected with the top beam (111).

8. The vibration damper of a washing machine according to claim 1 or 2, comprising a machine body shell (12) and an outer barrel (5), wherein the main connecting bracket (11) is positioned inside the machine body shell (12), supporting beams (112) are arranged on two sides of the machine body shell (12), a plurality of elastic supporting blocks (32) are arranged on the supporting beams (112), and the outer wall of the outer barrel (5) is abutted with each elastic supporting block (32).

9. The damping device of a washing machine according to claim 8, comprising a plurality of spring dampers (33), wherein the bottom of the main connecting bracket (11) is higher than the bottom of the machine body casing (12), and two ends of each spring damper (33) are respectively connected with the bottom of the machine body casing (12) and the bottom of the main connecting bracket (11);

and each spring damper (33) is obliquely arranged.

10. A damping device for a washing machine according to claim 1 or 2, characterized by comprising a supporting frame connected with a machine body shell (12), wherein the supporting frame is provided with a roller fish eye bearing set (6) for connecting an inner barrel of the washing machine, and the roller fish eye bearing set (6) is connected with a driven wheel (75);

comprises a driver (71) and a reverse vibration damping mechanism for driving the driven wheel (75) to rotate reversely with the driver (71).