CN111139627A

CN111139627A - Rolling type damping device and washing machine

Info

Publication number: CN111139627A
Application number: CN202010159742.4A
Authority: CN
Inventors: 贺小林; 杨湘木; 王凯; 陈国明
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-05-12

Abstract

The invention provides a rolling damping device and a washing machine. The rolling damping device includes a rotating bracket and a roller, the roller is rotatably mounted on the rotating bracket, and the roller is filled with a first non-Newtonian fluid. The rolling damping device of the present invention can use the characteristics of non-Newtonian fluids to withstand a large vibration force, thereby reducing the influence of lateral vibration force on the life of the rolling damping device and ensuring the service life of the rolling damping device .

Description

Rolling type damping device and washing machine

Technical Field

The invention relates to the technical field of air conditioning equipment, in particular to a rolling type damping device and a washing machine.

Background

The shock absorber adopted by the pulsator washing machine sold in the market is usually an air damping shock absorber. Particularly, when the pulsator washing machine works, the four air damping shock absorbers press the plastic shell under the action of the gravity of the washing machine barrel, so that the rubber base pad and the plastic shell are rubbed, and the air in the shell is compressed, thereby achieving the shock absorption effect. However, the common damper structure inevitably causes friction between the rubber base pad and the plastic shell during damping, certain noise is accompanied, more raw materials are needed in the production process, and the overall production cost of the pulsator washing machine is increased.

The patent No. 201810175309.2 provides a damping device for washing machine, which is beneficial to reducing the vibration of the inner and outer barrels of the washing machine, can increase the barrel volume on the basis of the original shell of the washing machine by arranging the damping device, improve the volume rate of the washing machine, reduce the vibration of the platform of the washing machine, increase the anti-eccentric starting capability of the washing machine, but when the transverse vibration force is larger, damage the damping sheet, and reduce the service life of the damping device. In addition, patent No. 201110067211.3 provides a damping hanger for fixing the outer tub of a small washing machine in the field of designing washing machines. The suspender can overcome the larger centrifugal force of the outer barrel, thereby avoiding the occurrence of barrel collision, has simple structure and convenient installation, not only can adapt to a small-sized washing machine, but also can be applied to a normal household washing machine. However, under the condition of large external force, the hanger rod entering the hanger seat and the spring seat can be separated, so that the shock absorption is failed.

Disclosure of Invention

The embodiment of the invention provides a rolling type damping device and a washing machine, and aims to solve the technical problem that the damping device of the washing machine in the prior art cannot withstand large vibration force and is invalid.

The application embodiment provides a roll formula damping device, includes: rotating the bracket; the roller is rotatably arranged on the rotating bracket, and the roller is filled with a first non-Newtonian fluid.

In one embodiment, the rotating bracket comprises a rotating shaft for mounting a roller; the support comprises a support body and a supporting part, the supporting part is movably arranged on the support, the rotating shaft is rotatably arranged on the supporting part, and a second non-Newtonian fluid is filled between the supporting part and the support body.

In one embodiment, the frame comprises a base and a mounting cavity disposed on the base, the support member is slidably mounted within the mounting cavity, and the mounting cavity is filled with a second non-newtonian fluid.

In one embodiment, the mounting cavity is perpendicular to the base.

In one embodiment, a roller includes an outer wheel body and a first non-Newtonian fluid filled within the outer wheel body.

A washing machine comprises a roller, wherein a rolling type damping device is arranged on the circumferential outer side of the roller, and the rolling type damping device is the rolling type damping device.

In one embodiment, the washing machine further comprises a housing, the drum is rotatably mounted in the housing, the rotating bracket is mounted on an inner wall of the housing, and the roller abuts against the drum.

In one embodiment, the housing is rectangular parallelepiped, and the rolling type vibration dampers are respectively provided on 4 inner walls of the housing.

In one embodiment, the rolling type damping devices are multiple groups, each group of rolling type damping devices comprises 1 small rolling type damping device and 2 large rolling type damping devices, the small rolling type damping devices are opposite to the axis of the roller, and the 2 large rolling type damping devices are respectively arranged on two sides of the small rolling type damping devices.

In one embodiment, the washing machine is a drum type washing machine or a pulsator type washing machine.

In the above examples, colloidal particles of the non-newtonian fluid of the shear thickening phenomenon tend to be densely packed, and water is present as a dispersion medium in the interstices between the densely arranged particles. When the impeller washing machine has large eccentricity and the barrel is collided in the dehydration process, impact load is transmitted to a rolling type damping device which is positioned at the upper side of the washing machine and is based on non-Newtonian fluid, the first non-Newtonian fluid in the roller is subjected to the impact load with the extremely high shear rate, and particles in dense arrangement are suddenly disturbed to form a porous loose arrangement structure. At this time, the water between the particles cannot fill the gaps of the loose arrangement, and the sliding action of the water layer between the particles is lost, so that the viscosity is greatly increased. The non-Newtonian fluid becomes firm and viscoelastic, and can absorb energy brought by collision to the maximum extent. Therefore, the rolling type damping device can withstand larger vibration force by utilizing the characteristics of the non-Newtonian fluid, thereby reducing the influence of the transverse vibration force on the service life of the rolling type damping device and ensuring the service life of the rolling type damping device.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

figure 1 is a schematic structural view of an embodiment of a rolling shock absorbing device according to the present invention;

fig. 2 is a partial structural view of an embodiment of a washing machine according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

Fig. 1 shows an embodiment of the rolling type shock-absorbing device of the present invention, which comprises a rotating bracket 10 and a roller 20, wherein the roller 20 is rotatably mounted on the rotating bracket 10, and the roller 20 is filled with a first non-newtonian fluid a.

Taking the rolling type damping device of the present invention as an example of being applied to a pulsator washing machine, when the drum 30 rotates in cooperation with the roller 20, the drum 30 generates an impact force due to the eccentric inertia of the drum 30 caused by the laundry in the drum 30 when the drum 30 is in use. With the rolling type vibration damper described above, colloidal particles of the non-newtonian fluid of the shear thickening phenomenon tend to be densely filled, and water exists as a dispersion medium in the gaps between the densely arranged particles. When the pulsator washing machine generates large eccentricity and the tub is collided in the dehydration process, the impact load is transmitted to the non-Newtonian fluid-based rolling type damping device positioned at the upper side of the washing machine, the first non-Newtonian fluid a in the roller 20 is subjected to the impact load with the extremely large shear rate, and the particles in dense arrangement are suddenly disturbed to form a porous loose arrangement structure. At this time, the water between the particles cannot fill the gaps of the loose arrangement, and the sliding action of the water layer between the particles is lost, so that the viscosity is greatly increased. The non-Newtonian fluid becomes firm and viscoelastic, and can absorb energy brought by collision to the maximum extent. Therefore, the rolling type damping device can withstand larger vibration force by utilizing the characteristics of the non-Newtonian fluid, thereby reducing the influence of the transverse vibration force on the service life of the rolling type damping device and ensuring the service life of the rolling type damping device.

Optionally, in the technical solution of the present invention, the roller 20 includes an outer-layer wheel body and a first non-newtonian fluid a filled in the outer-layer wheel body. The outer layer wheel body can be made of flexible materials such as rubber and the like, and can reduce the vibration and the noise of the pulsator washing machine.

As a more preferable embodiment, as shown in fig. 1, in the solution of the present invention, the rotating bracket 10 includes a rotating shaft 11 and a bracket, and the rotating shaft 11 is used for mounting the roller 20. The support comprises a support body and a support part 12, the support part 12 is movably arranged on the support, the rotating shaft 11 is rotatably arranged on the support part 12, and a second non-Newtonian fluid b is filled between the support part 12 and the support body. In this way, a certain impact load can be shared by the supporting member 12 connected to the roller 20 and the second non-newtonian fluid b, thereby ensuring that the rotating shaft 11 of the rolling damper can also work normally to increase the anti-eccentricity capability of the washing machine. Optionally, in the technical solution of the present invention, the rotating shaft 11 is a rotating iron core.

As shown in fig. 1, in the solution of the present embodiment, the frame body includes a base 13 and a mounting cavity 14 disposed on the base 13, the supporting member 12 is slidably mounted in the mounting cavity 14, and the mounting cavity 14 is filled with a second non-newtonian fluid b. Optionally, the mounting chamber 14 is perpendicular to the base 13, and in use, the support member 12 slides within the mounting chamber 14 in a direction perpendicular to the base 13, thereby generating a force on the second non-Newtonian fluid b.

The first non-newtonian fluid a and the second non-newtonian fluid b may be the same non-newtonian fluid or two different non-newtonian fluids.

In the technical solution of this embodiment, the roller 20 is a cylindrical roller, and the rotating shaft 11 passes through the axis of the cylindrical roller for installation.

As shown in fig. 2, the present invention also provides a washing machine comprising a drum 30, wherein the rolling type vibration damper is mounted on the circumferential outer side of the drum 30. The rolling type damping device is applied to the field of washing machines, the eccentric starting resistance of the washing machines can be improved, and the problem that the service life of the damping device of the washing machine is short is solved.

As shown in fig. 2, in the solution of the present embodiment, the washing machine further includes a housing 40, the drum 30 is rotatably mounted in the housing 40, the rotating bracket 10 is mounted on the inner wall of the housing 40, and the roller 20 abuts against the drum 30. When the roller 30 rotates, the roller 20 and the roller 30 rotate in a rolling friction manner, and when the roller 30 generates an impact force, the non-Newtonian fluid in the roller 20 and the rotating bracket 10 absorbs the impact force generated by the roller 30.

Optionally, the housing 40 is rectangular parallelepiped, and the rolling type vibration dampers are respectively disposed on 4 inner walls of the housing 40. More preferably, the rolling type damping devices are multiple groups, each group of rolling type damping devices comprises 1 small rolling type damping device and 2 large rolling type damping devices, the small rolling type damping devices are opposite to the axis of the roller 30, and the 2 large rolling type damping devices are respectively arranged on two sides of the small rolling type damping devices. Therefore, the 1 small rolling type damping device and the 2 large rolling type damping devices can limit the roller 30 and absorb the impact force of the roller 30 together.

As another embodiment not shown in the figures, the housing 40 may be circular, and for this case, it is only necessary to arrange the rolling type vibration damper symmetrically around the center of the housing 40.

The washing machine according to the present invention may be applied to a drum-type washing machine or a pulsator-type washing machine.

According to the technical scheme, the rolling type damping device and the washing machine are designed, so that the vibration and the noise of the washing machine can be effectively reduced, and the eccentric starting resistance of the washing machine is improved. When the damping device is used for dewatering the washing machine, the collision and noise between the outer barrel and the shell of the washing machine can be effectively reduced. The vibration and noise caused by the phenomenon of barrel collision can be effectively reduced, the eccentricity resistance of the pulsator washing machine can be enhanced, and meanwhile, the vibration reduction device is small in occupied space, simple in structure and easy in material obtaining, so that the cost can be effectively saved while the volume rate of the washing machine is improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and variations of the embodiment of the present invention may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rolling damping device, characterized in that, comprising:

Swivel bracket (10);

A roller (20) is rotatably mounted on the rotating bracket (10), and the roller (20) is filled with a first non-Newtonian fluid (a).

2. rolling damping device according to claim 1, is characterized in that, described rotating support (10) comprises:

a rotating shaft (11) for installing the roller (20);

A bracket, comprising a frame body and a supporting member (12), the supporting member (12) is movably mounted on the supporting member, and the rotating shaft (11) is rotatably mounted on the supporting member (12), so that A second non-Newtonian fluid (b) is filled between the support member (12) and the frame body.

3 . The rolling damping device according to claim 2 , wherein the frame body comprises a base ( 13 ) and an installation cavity ( 14 ) provided on the base ( 13 ), and the support member (12) is slidably installed in the installation cavity (14), and the installation cavity (14) is filled with the second non-Newtonian fluid (b).

4 . The rolling damping device according to claim 3 , wherein the installation cavity ( 14 ) is perpendicular to the base ( 13 ). 5 .

5. The rolling damping device according to claim 1, wherein the roller (20) comprises an outer wheel body and the first non-Newtonian fluid (a) filled in the outer wheel body .

6. A washing machine, comprising a drum (30), a rolling damping device is installed on the outer circumferential side of the drum (30), wherein the rolling damping device is any one of claims 1 to 5 The rolling damping device described in item.

7. The washing machine according to claim 6, characterized in that, the washing machine further comprises a casing (40), the drum (30) is rotatably installed in the casing (40), and the rotating bracket (10) is mounted on the inner wall of the casing (40), and the roller (20) is in contact with the drum (30).

8 . The washing machine according to claim 7 , wherein the casing ( 40 ) is in the shape of a rectangular parallelepiped, and the rolling damping devices are respectively arranged on four inner walls of the casing ( 40 ). 9 .

9 . The washing machine according to claim 8 , wherein the rolling damping devices are in multiple groups, and each group of rolling damping devices comprises a small rolling damping device and two large rolling damping devices. 10 . A damping device, the small rolling damping device is opposite to the axis of the drum (30), and two large rolling damping devices are respectively arranged on both sides of the small rolling damping device.

10 . The washing machine according to claim 6 , wherein the washing machine is a drum type washing machine or a pulsator type washing machine. 11 .