Damping device and clothes processing equipment
By filling the cylinder with electromagnetic fluid and adjusting the magnetic field strength with the excitation coil, the problem of wear or loss of elasticity failure of the vibration damper is solved, and effective vibration reduction and noise reduction of the washing machine is achieved.
Patent Information
- Application Number
- CN202422284445.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-18
AI Technical Summary
In the prior art, the vibration damper fails due to wear or loss of elasticity, resulting in high vibration noise from the washing machine and inability to effectively reduce vibration.
A vibration-absorbing device is adopted that fills the electromagnetic fluid in the cylinder and is equipped with an excitation coil on the outside. By adjusting the current of the excitation coil, the magnetic field strength is changed, thereby adjusting the damping force of the electromagnetic fluid and achieving vibration damping.
It effectively solves the problem of wear or loss of elastic failure of the vibration absorber, reduces vibration and noise of the washing machine, and improves the reliability and adaptability of the vibration absorber.
Smart Images
Figure CN223061289U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of vibration reduction for clothing treatment, and particularly to a vibration reduction device and a clothing treatment device. Background Art
[0002] As a core performance component of a washing machine, the vibration reduction system has a direct impact on the vibration, noise and displacement of the washing machine. The shock absorber is the core component in the vibration reduction system and plays a decisive role in the vibration of the washing machine. In the prior art, the shock absorber is composed of a cylinder and a damper. The damper is mainly made of rubber polymer material, is inserted into the cylinder, and can be stretched back and forth. Connection holes of the washing machine body and the outer barrel are respectively provided at both ends of the damper and the cylinder (or spring). Since there is friction between the damper and the cylinder during high-speed operation of the machine, wear and failure occur, and the machine has large vibration and noise. If it is composed of a damper and a spring, the spring loses its elasticity and fails due to multiple switches between the compressed state and the stretched state. Therefore, there are technical problems of wear or loss of elasticity and failure of the shock absorber in the prior art. Utility Model Content
[0003] The main purpose of this application is to provide a vibration reduction device and a clothing treatment device, aiming to solve the technical problems of wear or loss of elasticity and failure of the shock absorber in the prior art.
[0004] An embodiment of this application provides a vibration reduction device, including:
[0005] A vibration reduction assembly for connecting a vibrating body;
[0006] A cylinder body provided with a cavity; part of the vibration reduction assembly is arranged in the cavity and is movably connected to the cylinder body; the cavity is filled with electromagnetic liquid;
[0007] An excitation coil arranged outside the cylinder body, configured to generate a magnetic field in the cavity when powered on and the current can be adjusted.
[0008] Optionally, at least part of the excitation coil is spirally wound around the cylinder body.
[0009] Optionally, the vibration reduction assembly includes:
[0010] A rod part, a part of which is arranged in the cavity; the other part of the rod part extends out of the cylinder body and is used for connecting the vibrating body; and
[0011] A piston movably arranged in the cavity and connected to one end of the rod part away from the vibrating body; a sensor is arranged on the piston for sensing the operation information of the piston and generating a first signal for adjusting the input current of the excitation coil.
[0012] Optionally, the sensor is an acceleration sensor, an amplitude sensor, or a velocity sensor.
[0013] Optionally, the piston divides the cavity into a first cavity and a second cavity; a part of the rod portion is disposed in the first cavity;
[0014] The damping assembly further includes a spring, the spring is disposed in the first cavity and connected to the piston, and the spring is used to abut against the axial end of the cylinder body when the piston moves to the limit position.
[0015] Optionally, the piston is provided with a liquid passing hole communicating the first cavity and the second cavity.
[0016] Optionally, the electromagnetic liquid includes magnetic particles, and the particle size of the magnetic particles is 3-10 μm.
[0017] Optionally, the damping device further includes a housing, the cylinder body is disposed in the housing; the damping assembly partially extends out of the housing; there is a gap between the cylinder body and the housing, and the excitation coil is disposed in the gap.
[0018] In a second aspect, the present application further provides a laundry treatment device, including: a laundry tub; and the damping device as described above, the damping device is connected to the laundry tub.
[0019] Optionally, the laundry treatment device further includes: a cabinet, the laundry tub is disposed in the cabinet; a controller, the controller is disposed in the cabinet and configured to output a second signal for adjusting the input current of the excitation coil.
[0020] In the technical solution of the embodiment of the present application, by filling electromagnetic liquid in the cavity of the cylinder body; and providing an excitation coil outside the cylinder body; when the excitation coil is energized, a magnetic field is generated in the cavity; and the current of the excitation coil can be adjusted, and the electromagnetic liquid generates different damping forces under different magnetic fields, thereby realizing the damping of the vibrating body. In the technical solution of the present application, the damping force is changed by the electromagnetic liquid under the magnetic field corresponding to different magnitudes of current, rather than by the friction and wear between the damping rod and the cylinder or the elastic member being compressed and stretched back and forth, thereby solving the technical problem of wear or loss of elasticity and failure of the damper in the prior art. Description of the Drawings
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.
[0022] Figure 1 Schematic structural diagram of a vibration damping device provided by an embodiment of the present application;
[0023] Figure 2 Schematic diagram of a vibration damping component in the vibration damping device provided by an embodiment of the present application;
[0024] Figure 3 Partial structural schematic diagram of a clothing treatment device provided by an embodiment of the present application.
[0025] List of reference numerals:
[0026] 100 Vibration damping device 160 Spring 200 Laundry tub 111 Rod part 300 Box body 112 Piston 110 Vibration damping component 112a Liquid passing hole 120 Cylinder 151 Connecting rod 130 Excitation coil S Cavity 140 Sensor S1 First cavity 150 Shell S2 Second cavity Detailed implementation manners
[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope protected by the present application.
[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0029] In the present application, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0030] In addition, if descriptions such as "first" and "second" are involved in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.
[0031] An embodiment of the present application provides a vibration damping device 100, as Figure 1 shown, including:
[0032] A vibration damping assembly 110, which is used to connect the vibrating body;
[0033] A cylinder 120, which is provided with a cavity S; a part of the vibration damping assembly 110 is arranged in the cavity S and is movably connected to the cylinder 120; the cavity S is filled with electromagnetic fluid;
[0034] An exciting coil 130, which is arranged outside the cylinder 120 and is configured to generate a magnetic field in the cavity S when energized and the current can be adjusted.
[0035] In the technical solution of the embodiment of the present application, electromagnetic fluid is filled in the cavity S of the cylinder 120; and an exciting coil 130 is arranged outside the cylinder 120; when the exciting coil 130 is energized, a magnetic field is generated in the cavity S; and the current of the exciting coil 130 can be adjusted, and the electromagnetic fluid generates different damping forces under different magnetic fields, thereby realizing vibration damping of the vibrating body. In the technical solution of the present application, the damping force is changed by the electromagnetic fluid under the magnetic field corresponding to different magnitudes of current, rather than by the friction and wear between the shock absorber rod and the cylinder or the elastic member being compressed and stretched back and forth, thereby solving the technical problems of wear or loss of elasticity and failure of the shock absorber existing in the prior art.
[0036] As an alternative embodiment of the above embodiment, as Figure 1 shown, at least part of the exciting coil 130 is spirally wound around the cylinder 120. The exciting coil 130 is spirally wound around the cylinder 120 so that the magnetic field intensity in the cylinder 120 is basically the same, and thus the damping force provided by the electromagnetic fluid is basically uniform, so that the damping forces received by the vibration damping assembly at each position are basically the same.
[0037] In some embodiments, the cylinder 120 is an axial structural member, and the excitation coil 130 is helically wound around the cylinder 120. The excitation coil 130 can be connected to the positive (or negative) pole of the power supply element near the upper end of the cylinder 120, and can be connected to the negative (or positive) pole of the power supply element near the lower end of the cylinder 120, which is convenient for the lead operation of the excitation coil 130 and the external power supply element during assembly, and improves the reliability and safety of wire routing.
[0038] As an alternative embodiment of the above embodiment, the damping assembly 110 includes: a rod portion 111, a part of the rod portion 111 is disposed in the cavity S; another part of the rod portion 111 extends out of the cylinder 120 and is used to connect the vibrating body; and a piston 112, the piston 112 is movably disposed in the cavity S and is connected to one end of the rod portion 111 away from the vibrating body; a sensor 140 is provided on the piston 112 for sensing the operating information of the piston 112 and generating a first signal for adjusting the input current of the excitation coil 130. In the embodiment, the piston 112 is movably disposed in the cavity S, and the electromagnetic fluid provides a damping force to the piston 112, and provides damping to the external vibrating body through the rod portion 111 to achieve vibration damping. A sensor 140 is provided on the piston 112, and the sensor 140 senses the motion information of the piston 112, and then generates a first signal for adjusting the input current of the excitation coil 130; that is, when the vibrating body vibrates, the piston 112 vibrates following the vibrating body. At this time, the sensor 140 senses the motion information of the piston 112, and then generates a first signal. The first signal is used to adjust the input current of the excitation coil 130, and then change the damping force of the electromagnetic fluid, so that the damping force can match the vibration of the vibrating body to achieve vibration damping.
[0039] In the embodiment, when different currents are input into the excitation coil 130, the magnetic field intensity received by the electromagnetic fluid is different, and its fluid properties change, such as shear strength, apparent viscosity, viscosity, etc. Furthermore, the damping force of the electromagnetic fluid changes, so that the damping force changes with the current of the excitation coil 130.
[0040] As an alternative embodiment of the above embodiment, the sensor 140 is an acceleration sensor 140 or an amplitude sensor 140 or a velocity sensor 140. That is, in the embodiment, the operating information of the piston 112 can be acceleration, amplitude or velocity. The first signals obtained by the acceleration sensor 140 or the amplitude sensor 140 or the velocity sensor 140 according to the sensed acceleration, amplitude or velocity of the piston 112 are acceleration signals or amplitude signals or velocity signals respectively.
[0041] In the embodiment, the acceleration sensor 140 or the amplitude sensor 140 or the velocity sensor 140 can be fixed or welded to the piston 112 through threaded parts.
[0042] As an alternative embodiment of the above embodiment, the damping assembly 110 further includes a spring 160. The spring 160 is disposed in the cavity S and connected to the piston 112. The spring 160 is configured to abut against the axial end of the cylinder when the piston 112 moves to the extreme position. In the embodiment, in order to avoid harsh working conditions, a spring 160 is disposed in the cavity S. The spring 160 moves along with the movement of the piston 112. When the vibrating body vibrates with a large amplitude, the spring 160 can provide elasticity while the piston 112 provides a large damping force, reduce the impact on the piston 112, and improve the reliability of the damping device 100.
[0043] In some embodiments, the spring 160 is sleeved outside the rod portion 111. The spring 160 can be riveted or welded to the piston 112.
[0044] As an alternative embodiment of the above embodiment, the piston 112 divides the cavity S into a first cavity S1 and a second cavity S2; a part of the rod portion 111 is disposed in the first cavity S1; a liquid passing hole 112a communicating the first cavity S1 and the second cavity S2 is provided on the piston 112. In the embodiment, during the movement of the piston 112, the electromagnetic liquid flows through the liquid passing hole 112a; the change in the flow performance of the electromagnetic liquid will also bring different damping forces to the movement of the piston 112.
[0045] In some embodiments, the spring 160 is disposed in the first cavity S1. At this time, the spring 160 abuts against the axial top of the cylinder 120 to provide elastic force under harsh working conditions; in some embodiments, the spring 160 is disposed in the second cavity S2. At this time, the spring 160 abuts against the axial bottom of the cylinder 120 to provide elastic force under harsh working conditions; in some embodiments, springs 160 can be disposed in both the first cavity S1 and the second cavity S2.
[0046] As an alternative embodiment of the above embodiment, the electromagnetic liquid includes magnetic particles, and the particle size of the magnetic particles is 3-10 μm. In the technical solution of the embodiment of the present application, the electromagnetic liquid includes synthetic hydrocarbons and magnetic particles with a size of 3-10 μm. Under the action of an external electric field, the properties of its rheological material, such as shear strength, apparent viscosity, etc., will change significantly. By filling this special damping liquid into the electrorheological damper and changing the electric field strength, the viscosity of the current liquid is changed, thereby changing the damping force of the damper, so that the magnitude of the damping force changes with the change of the electric field strength, realizing the adjustment of the damping force.
[0047] As an alternative embodiment of the above embodiment, the damping device 100 further includes a housing, and the cylinder body is disposed inside the housing; a part of the damping assembly 110 extends out of the housing; there is a gap between the cylinder body and the housing, and the excitation coil 130 is disposed in the gap. In the embodiment, the housing provides protection for the excitation coil 130. In some embodiments, the housing has a receiving cavity, and the cylinder body is disposed in the receiving cavity; the damping device 100 further includes a top cover that seals the receiving cavity; an opening is provided on the top cover, and the rod portion 111 extends out of the housing through the opening. The cylinder body is fixed to the top cover or the housing, such as by welding or riveting.
[0048] In the embodiment, a cable interface is provided on the housing, and the positive and negative poles of the excitation coil 130 respectively pass out of the housing through the corresponding cable interfaces (not shown) to be connected to external power supply components.
[0049] In a second aspect, the present application further provides a laundry treatment device. Figure 3 As shown, it includes: a washing tub 200; and a damping device 100, and the damping device 100 is connected to the washing tub 200. The damping device adopts a part of the solutions or all of the technical solutions of the foregoing embodiments, and thus has a part or all of the technical advantages of the foregoing embodiments. During the rotation of the washing tub 200, vibrations will be generated due to unbalanced laundry; for example, in some embodiments, in order to keep the whole machine running smoothly, especially in the case of small-load dehydration with large eccentricity. When the washing machine has a large load eccentricity and generates vibrations, the sensor 140 in the damping device 100 can timely collect the operation information of the washing tub 200, and then generate a first signal for controlling the adjustment of the current of the excitation coil 130, thereby adjusting the damping force to adapt to the operation conditions (speed, amplitude or acceleration) of the washing tub 200, and solving the technical problems of wear failure or elastic failure existing in traditional shock absorbers, and can also reduce vibration noise.
[0050] As an alternative embodiment of the above embodiment, the laundry treatment device further includes: a cabinet 300, within which the laundry tub 200 is disposed; a controller, which is disposed within the cabinet 300 and is configured to output a second signal for adjusting the input current of the excitation coil 130. In the embodiment, the first signal collected by the sensor 140 is input into the controller, and the controller outputs a second signal for adjusting the input current of the excitation coil 130 according to the first signal, and the damping device timely adjusts the damping characteristics to make it more adaptable to the operating speed and amplitude of the whole machine. In the embodiment, the controller may be a control module in the laundry treatment device; after the controller issues the second signal, the current in the excitation coil 130 is adjusted to a current matching the second signal, and then the electromagnetic fluid generates an appropriate damping force. In the embodiment, the controller outputs the second signal to the power supply element of the excitation coil 130, and the power supply element adjusts the current input to the excitation coil 130 in response to the second signal.
[0051] In the embodiment, the rod portion 111 of the vibration damping assembly 110 is connected to the laundry tub 200, and a connecting rod 151 is provided on the housing 150 of the vibration damping device 100, and the connecting rod 151 is connected to the cabinet 300. The connection between the rod portion 111 and the laundry tub 200 and the connection between the connecting rod 151 and the cabinet 300 can adopt existing connection methods.
[0052] In the embodiment, a balance weight and a tension spring are further provided within the cabinet 300. When the eccentricity of the laundry is too heavy, such as when the laundry rotates from the upper end to the lower end, the rotation balance of the drum is ensured by the balance weight. At this time, the drum will move downward due to excessive gravity, and the suspension spring 160 will be pulled during the downward movement of the drum. The vibration of the drum is reduced by the vibration damping device 100 fixed to the bottom and the drum, so as to complete the normal washing process and increase the service life of the drum washing machine. The installation structure of the balance weight and the tension spring is not the key improvement point of this application either.
[0053] The above are only alternative embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structural transformation made by using the description and drawings of the present application under the application concept of the present application, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present application.
Claims
1. A vibration damping device, characterized in that, Comprising: A vibration damping component for connecting a vibrating body; A cylinder body having a cavity; a part of the vibration damping component is disposed in the cavity and is movably connected to the cylinder body; the cavity is filled with electromagnetic liquid; An exciting coil disposed outside the cylinder body and configured to generate a magnetic field in the cavity when energized and the current is adjustable.
2. The vibration damping device according to claim 1, characterized in that, At least a part of the exciting coil is spirally wound around the cylinder body.
3. The vibration damping device according to claim 1, characterized in that, The vibration damping component includes: A rod part, a part of the rod part is disposed in the cavity; another part of the rod part extends out of the cylinder body and is used for connecting the vibrating body; and A piston movably disposed in the cavity and connected to one end of the rod part away from the vibrating body; a sensor is provided on the piston for sensing the operation information of the piston and generating a first signal for adjusting the input current of the exciting coil.
4. The vibration damping device according to claim 3, characterized in that, The sensor is an acceleration sensor, an amplitude sensor or a velocity sensor.
5. The shock absorber according to claim 3, characterized in that, The vibration damping component further includes a spring disposed in the cavity and connected to the piston, and the spring is used for abutting against the axial end of the cylinder body when the piston moves to the limit position.
6. The vibration damping device according to claim 3, characterized in that, The piston divides the cavity into a first cavity and a second cavity; a part of the rod part is disposed in the first cavity; a liquid passing hole communicating the first cavity and the second cavity is provided on the piston.
7. The shock absorber according to claim 1, characterized in that, The electromagnetic liquid includes magnetic particles, and the particle size of the magnetic particles is 3-10 μm.
8. The vibration damping device according to claim 1, wherein, The vibration damping device further includes a housing, the cylinder body is disposed in the housing; a part of the vibration damping component extends out of the housing; A gap is provided between the cylinder body and the housing, and the exciting coil is disposed in the gap.
9. A laundry treatment device, characterized in that, Comprising: A washing tub; And The vibration damping device according to any one of claims 1 to 8, the vibration damping device being connected to the washing tub.
10. The laundry treating apparatus according to claim 9, wherein Comprising: A box body, the washing tub is disposed in the box body; A controller disposed in the box body and configured to output a second signal for adjusting the input current of the exciting coil.