A clothing treatment device
By designing a vibration absorbing device in the clothing processing equipment and setting the target excitation frequency between the first order natural frequencies of the first vibration absorber and the second vibration absorber, the problem of poor effect of the existing vibration absorber in practical applications is solved, and a wider vibration suppression and noise reduction effects are achieved.
Patent Information
- Application Number
- CN202111403148.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-11-24
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2041-11-24
AI Technical Summary
In practical applications, existing washing machine vibration damping devices are difficult to effectively reduce the noise problems caused by the frequency movement of the vibration peak point, especially when there is a deviation in the maximum speed of the inner cylinder.
A clothing treatment device is designed, and a vibration absorption device including a first vibration absorber and a second vibration absorber is designed. The target excitation frequency is located between the first-order natural frequencies of the two. Through this setting, the vibration absorption frequency band is widened and the vibration absorption effect is improved.
Effective reduction of vibration in the broadband frequency range near the target excitation frequency is achieved, the suppression band of the vibration absorption device is widened, and the dehydration noise problem is improved.
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Figure CN116163118B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vibration damping technology, and particularly to a laundry treatment device. Background Art
[0002] Taking a washing machine as an example, when the washing machine is in operation, the rotational speed of the inner drum fluctuates within a certain range, resulting in the movement of the vibration peak point frequency; in addition, in actual situations, there will be a certain deviation between the maximum rotational speed of each washing machine after leaving the factory and the design value. Therefore, in actual engineering applications, the vibration damping and noise reduction effects of ordinary dynamic vibration absorbers (such as spring mass block vibration damping systems) are not good. Summary of the Invention
[0003] In view of this, the embodiments of this application are expected to provide a laundry treatment device that can broaden the vibration absorption frequency band for the target excitation frequency.
[0004] The embodiments of this application provide a laundry treatment device, including:
[0005] A device body;
[0006] A vibration absorption device provided on the device body, the vibration absorption device includes a first vibration absorber and a second vibration absorber, and the target excitation frequency of the device body is within the frequency band between the first natural frequency of the first vibration absorber and the first natural frequency of the second vibration absorber.
[0007] In some possible implementation schemes, the device body includes an inner drum, and the target excitation frequency is: the excitation frequency when the inner drum operates at a preset maximum dehydration rotational speed.
[0008] In some possible implementation schemes, the first natural frequency of the first vibration absorber is greater than the first natural frequency of the second vibration absorber and does not exceed 1.1 times the first natural frequency of the second vibration absorber.
[0009] In some possible implementation schemes, the first natural frequency of the first vibration absorber is within the frequency band of 1.01 - 1.1 times the target excitation frequency; and / or, the first natural frequency of the second vibration absorber is within the frequency band of 0.9 - 0.99 times the target excitation frequency.
[0010] In some possible implementation schemes, the first vibration absorber includes a first elastic arm and a first oscillator, the first end of the first elastic arm is fixed to the device body, and the second end of the first elastic arm is connected to the first oscillator; the second vibration absorber includes a second elastic arm and a second oscillator, the first end of the second elastic arm is fixed to the device body, and the second end of the second elastic arm is connected to the second oscillator.
[0011] In some possible embodiments, the swinging direction of the first elastic arm is perpendicular to the axis of the device body; and / or, the swinging direction of the second elastic arm is perpendicular to the axis of the device body.
[0012] In some possible embodiments, the swinging direction of the first elastic arm, the swinging direction of the first elastic arm, and the axis of the device body are arranged orthogonally to each other in pairs.
[0013] In some possible embodiments, the device body includes a barrel assembly and a plurality of mounting bases provided at the rear end of the barrel assembly, and the device body is mounted to a wall through each of the mounting bases; the vibration absorption device is provided on the mounting bases.
[0014] In some possible embodiments, the vibration absorption device includes a mounting plate, and the first ends of the first elastic arm and the second elastic arm are both connected to the mounting plate, and the mounting plate is used to fix the vibration absorption device to the mounting base.
[0015] In some possible embodiments, the device body includes an adapter, the adapter includes two ear plates and a connecting plate connecting the two ear plates, the ear plates are connected to the mounting bases, the middle part of the connecting plate protrudes toward the side of the mounting plate, and the mounting plate and the connecting plate are stacked, and a fastener passes through the mounting plate and the connecting plate.
[0016] In some possible embodiments, the plurality of mounting bases are arranged along the circumferential direction of the barrel assembly, and each of the mounting bases and the rear end face of the barrel assembly jointly define a mounting area, and the vibration absorption device is provided in the mounting area.
[0017] In some possible embodiments, the device body includes a drive assembly for driving the inner cylinder of the barrel assembly to rotate, and the drive assembly is provided in the mounting area.
[0018] In some possible embodiments, the number of the vibration absorption devices is multiple, and one vibration absorption device is provided on each of the mounting bases.
[0019] In the clothes processing device according to the embodiment of the present application, since the target excitation frequency is within the frequency band between the first-order natural frequency of the first vibration absorber and the first-order natural frequency of the second vibration absorber, that is to say, the first-order natural frequencies of the first vibration absorber and the second vibration absorber are on both sides of the target excitation frequency, the vibration absorption device can have a good vibration absorption effect on the excitation frequencies between the first-order natural frequencies of the first vibration absorber and the second vibration absorber, achieving the purpose of reducing the vibration in the wide-band frequency range near the target excitation frequency, that is, the vibration absorption device has good vibration absorption ability and broadens the frequency band suppressed by the vibration absorption device. Description of the Drawings
[0020] Figure 1 Partial structural schematic diagram of a laundry treatment device according to an embodiment of the present application;
[0021] Figure 2 is Figure 1 Schematic diagram of another perspective of the structure shown;
[0022] Figure 3 is Figure 1 Schematic diagram of yet another perspective of the structure shown;
[0023] Figure 4 is Figure 3 Partial enlarged schematic diagram at position A in;
[0024] Figure 5 Structural schematic diagram of a vibration absorption device according to an embodiment of the present application;
[0025] Figure 6 is Figure 5 Schematic diagram of another perspective of the structure shown;
[0026] Figure 7 Structural schematic diagram of an adapter according to the first embodiment of the present application;
[0027] Figure 8 is Figure 7 Schematic diagram of another perspective of the structure shown;
[0028] Figure 9 Structural schematic diagram of an adapter according to the second embodiment of the present application;
[0029] Figure 10 is Figure 9 Schematic diagram of another perspective of the structure shown;
[0030] Figure 11 Structural schematic diagram of an adapter according to the third embodiment of the present application;
[0031] Figure 12 Structural schematic diagram of an adapter according to the fourth embodiment of the present application.
[0032] Description of reference numerals
[0033] Outer tub 11; mounting base 12; adapter 13; ear plate 131; first connection hole 131a; connecting plate 132; second through hole 132a; avoidance recessed area 132b;
[0034] Vibration absorption device 2;
[0035] First vibration absorber 21; first elastic arm 211; first oscillator 212;
[0036] Second vibration absorber 22; second elastic arm 221; second oscillator 222;
[0037] Mounting plate 23; first through hole 23a Specific embodiments
[0038] The following further describes in detail the embodiments of the present application in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.
[0039] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0040] The embodiments of the present application provide a laundry treatment device, including a device body and a vibration damping device 2. The vibration damping device 2 is arranged on the device body.
[0041] It should be noted that the device body is a general term for the overall structure that realizes the required functions of the laundry treatment device. Specifically, in the embodiments of the present application, the structure of the laundry treatment device other than the vibration damping device 2 is collectively referred to as the device body.
[0042] Exemplarily, the device body includes a tub assembly, a drive assembly, a housing, a mounting base 12, etc. The housing surrounds the tub assembly circumferentially, and the housing serves as the appearance part of the laundry treatment device. The tub assembly at least includes an inner tub, and the drive assembly is used to drive the inner tub to rotate.
[0043] The specific structural form of the tub assembly is not limited.
[0044] Exemplarily, in one embodiment, the tub assembly includes an inner tub and an outer tub 11, and the inner tub is rotatably arranged in the outer tub 11. Among them, the inner tub can be a perforated inner tub or a non-perforated inner tub. A perforated inner tub refers to an inner tub that relies on the outer tub 11 to hold water, and a non-perforated inner tub refers to an inner tub that relies on itself to hold water.
[0045] It should be noted that in addition to the outer tub 11 and the inner tub, the tub assembly also includes accessories attached to the outer tub 11, such as weights, and structures attached to the inner tub, such as lifting ribs, etc.
[0046] In another embodiment, the tub assembly may not be provided with the outer tub 11, but a water receiving tray is arranged below the inner tub for receiving the washing water discharged from the inner tub. In this embodiment, the inner tub is a non-perforated inner tub.
[0047] It is understandable that the vibration absorption device 2 can be arranged at any suitable position of the equipment body. For example, it can be installed on the box body, on the outer barrel 11 of the barrel assembly, or on the drive assembly, or on the mounting base 12, etc.
[0048] It should be noted that in some embodiments, the barrel assembly can be a horizontal-axis type, that is, the axis of the barrel assembly is arranged in the front-rear direction, and the barrel assembly adopts a drum type structure. For example, a drum washing machine, a drum dryer, a drum washing and drying integrated machine, etc.
[0049] In other embodiments, the barrel assembly can be a vertical-axis type, the axis of the barrel assembly is arranged in the up-down direction, and the barrel assembly adopts a pulsator type structure. For example, a pulsator washing machine.
[0050] In the embodiments of the present application, the axes of both the barrel assembly and the equipment body refer to the rotation axis of the inner barrel.
[0051] In the embodiments of the present application, the "front" in the "front-rear direction" refers to the side facing the user, and the "rear" represents the direction opposite to the "front".
[0052] The drive assembly includes at least a motor. The motor serves as a power source, outputs torque, and drives the inner barrel to rotate. It should be noted that in the embodiments where the inner barrel is configured with a pulsator, the drive assembly is also used to drive the pulsator to rotate.
[0053] During the process of the motor driving the inner barrel to rotate, the inner barrel vibrates. The motor serves as an excitation source and has different excitation frequencies at different rotational speeds. When the excitation frequency is within certain ranges, it may cause the clothing treatment equipment to radiate relatively large noise to the surrounding, affecting the user experience.
[0054] For this reason, in the embodiments of the present application, please refer to Figure 5 and Figure 6 , the vibration absorption device 2 includes a first vibration absorber 21 and a second vibration absorber 22.
[0055] The target excitation frequency f0 of the equipment body is within the frequency band between the first-order natural frequency f1 of the first vibration absorber 21 and the first-order natural frequency f2 of the second vibration absorber 22. That is, f1 < f0 < f2, or f2 < f0 < f1.
[0056] It should be noted that in the embodiments of the present application, the first natural frequency refers to the first-order natural frequency. The target excitation frequency f0 of the equipment body refers to the excitation frequency applied by the motor that needs to be suppressed as designed to the equipment itself. For example, for a certain type of clothing treatment equipment, if the vibration energy is relatively large and the noise is relatively sharp when the excitation frequency is 1000 Hz (Hertz), and it is necessary to focus on suppressing the noise at this excitation frequency, the target excitation frequency can be designed to be 1000 Hz.
[0057] Taking the first vibration absorber 21 as an example, if a reasonable excitation frequency is given to the first vibration absorber 21 and this excitation frequency is exactly equal to a certain natural frequency of the first vibration absorber 21, resonance will occur. The vibration mode corresponding to this natural frequency is called the main vibration mode of this order. At this time, the influence of other vibration modes of each order is so small that it can be ignored. We usually only focus on the frequencies of low-order vibration modes, especially the natural frequency of the first-order vibration mode, because the lower the frequency, the easier it is to be excited by external excitation.
[0058] In the related art, a spring-mass vibration damping system is provided on the clothing treatment equipment. The spring-mass vibration damping system is a single-degree-of-freedom system, and its natural frequency is constant, that is, there is only one natural frequency. The spring-mass vibration damping system is only effective at its natural frequency and a very narrow frequency band (left and right) near the natural frequency. That is to say, the spring-mass vibration damping system is only effective for a single frequency point, and generally only effective for low frequencies such as about 300 Hz.
[0059] When the whole clothing treatment equipment is running, the rotational speed of the inner cylinder fluctuates within a certain range, which causes the frequency of the vibration peak point to shift, and the amplitudes within a relatively wide frequency band near the vibration peak are often relatively large. In addition, for example, the designed maximum rotational speed of the inner cylinder is 1000 rpm (revolutions per minute), but in actual situations, there will be a certain deviation in the maximum rotational speed of each clothing treatment equipment after leaving the factory, such as 930 rpm - 1050 rpm. Therefore, in actual engineering applications, the spring-mass vibration damping system has poor vibration reduction and noise reduction effects and it is difficult to achieve an ideal vibration absorption effect.
[0060] In the clothing treatment equipment of the embodiments of the present application, since the target excitation frequency is within the frequency band between the first-order natural frequency of the first vibration absorber 21 and the first-order natural frequency of the second vibration absorber 22, that is to say, the first-order natural frequencies of the first vibration absorber 21 and the second vibration absorber 22 are on both sides of the target excitation frequency, the vibration absorption device 2 can have a good vibration absorption effect on the excitation frequency between the first-order natural frequencies of the first vibration absorber 21 and the second vibration absorber 22, so as to achieve the purpose of reducing the vibration within the wideband frequency range near the target excitation frequency. That is, the vibration absorption device 2 has good vibration absorption ability and broadens the frequency band suppressed by the vibration absorption device 2.
[0061] In the clothes treatment device according to the embodiment of the present application, the vibration absorption device 2 suppresses the vibration of the device body and improves the dehydration noise problem.
[0062] Exemplarily, in some embodiments, the target excitation frequency is: the excitation frequency when the inner drum runs at the preset maximum dehydration speed. Wherein, the preset maximum dehydration speed refers to the upper limit value of the preset dehydration speed.
[0063] It can be understood that when the motor speed is small, the inner drum speed is small, the excitation frequency is small, and the vibration energy is not large. Even if noise is generated, the noise will not be very sharp and harsh. During the dehydration process of the clothes treatment device, the inner drum will run at the preset maximum dehydration speed for a long time, the excitation frequency of the motor is basically at the maximum value, the vibration energy is large, and the radiated noise is relatively sharp. Therefore, in the embodiment of the present application, setting the target excitation frequency to the excitation frequency when the inner drum runs at the preset maximum dehydration speed can effectively reduce the sharp noise when running at the maximum speed.
[0064] For different types of clothes treatment devices, the designed maximum dehydration speeds are different. Exemplarily, the clothes treatment device is a wall-mounted clothes treatment device, and the preset maximum dehydration speed is 600 rpm to 1400 rpm. For example, 600 rpm, 650 rpm, 700 rpm, 750 rpm, 800 rpm, 850 rpm, 900 rpm, 950 rpm, 1000 rpm, 1050 rpm, 1100 rpm, 1150 rpm, 1200 rpm, 1250 rpm, 1300 rpm, 1350 rpm, 1400 rpm, etc. For the wall-mounted clothes treatment device, it has a small volume and needs to be hung on the wall. Therefore, the designed maximum dehydration speed is small. In this embodiment, it not only has a noise reduction effect, but also can reduce the vibration energy transmitted from the clothes treatment device to the wall, and improve the installation reliability of the clothes treatment device.
[0065] It should be noted that the relative magnitudes of the first-order natural frequency of the first vibration absorber 21 and the first-order natural frequency of the second vibration absorber 22 are not limited. It can be that the first-order natural frequency of the first vibration absorber 21 is greater than the first-order natural frequency of the second vibration absorber 22, or the first-order natural frequency of the first vibration absorber 21 is less than the first-order natural frequency of the second vibration absorber 22.
[0066] Exemplarily, the first-order natural frequency of the first vibration absorber 21 is greater than the first-order natural frequency of the second vibration absorber 22 and does not exceed 1.1 times the first-order natural frequency of the second vibration absorber 22, that is, f2 < f1 < f2 * 1.1. That is to say, the values of f1 and f2 are relatively close, so that f1 and f2 are relatively close to f0, and at the target excitation frequency, the first-order natural frequencies of the first vibration absorber 21 and the second vibration absorber 22 can be better excited, improving the vibration absorption effect.
[0067] Exemplarily, the first natural frequency of the first shock absorber 21 is within the frequency band of 1.01 to 1.1 times the target excitation frequency, i.e., f1 = (1.01 to 1.1) * f0. For example, when f0 = 1000 Hz (Hertz), then f1 = 1010 Hz to 1100 Hz. In this way, the first natural frequency of the first shock absorber 21 maintains an appropriate bandwidth with the target excitation frequency, and at the same time, it can be ensured that the target excitation frequency can better excite the first natural frequency of the first shock absorber 21.
[0068] Exemplarily, the first natural frequency of the second shock absorber 22 is within the frequency band of 0.9 to 0.99 times the target excitation frequency, i.e., f2 = (0.9 to 0.99) * f0. For example, when f0 = 1000 Hz (Hertz), then f2 = 900 Hz to 990 Hz. In this way, the first natural frequency of the second shock absorber 22 maintains an appropriate bandwidth with the target excitation frequency, and at the same time, it can be ensured that the target excitation frequency can better excite the first natural frequency of the second shock absorber 22.
[0069] Exemplarily, the first shock absorber 21 includes a first elastic arm 211 and a first oscillator 212. The first end of the first elastic arm 211 is fixed to the equipment body, and the second end of the first elastic arm 211 is connected to the first oscillator 212. That is, the first end of the first elastic arm 211 is used as the fixed end, the second end of the first elastic arm 211 is the free end, the first oscillator 212 is arranged at the free end of the first elastic arm 211, and the first elastic arm 211 drives the first oscillator 212 to swing.
[0070] The second shock absorber 22 includes a second elastic arm 221 and a second oscillator 222. The first end of the second elastic arm 221 is fixed to the equipment body, and the second end of the second elastic arm 221 is connected to the second oscillator 222. That is, the first end of the second elastic arm 221 is used as the fixed end, the second end of the second elastic arm 221 is the free end, the second oscillator 222 is arranged at the free end of the second elastic arm 221, and the second elastic arm 221 drives the second oscillator 222 to swing.
[0071] It should be noted that the vibration direction of the laundry treatment equipment changes during the working process. Among them, the vibration in each direction perpendicular to the axis of the equipment body is more obvious. Among them, the axis of the equipment body is the rotation axis of the inner cylinder.
[0072] For example, the up-down direction, front-back direction, and left-right direction form an XYZ three-dimensional rectangular coordinate system. Among them, the X-axis is along the left-right direction, the Z-axis is along the up-down direction, and the Y-axis is along the front-back direction.
[0073] For example, when the axis of the barrel assembly is arranged along the up-down direction, the vibration of the equipment body in each direction in the horizontal plane is more obvious, that is, it has a larger amplitude in the XY rectangular coordinate plane.
[0074] For another example, when the axis of the barrel assembly is arranged in the front-back direction, the vibrations of the equipment body in all directions in the vertical plane are relatively obvious, that is, the equipment body has a relatively large amplitude in the above-mentioned XZ rectangular coordinate plane.
[0075] To this end, in some embodiments, the swinging direction of the first elastic arm 211 is perpendicular to the axis of the equipment body; and / or, the swinging direction of the second elastic arm 221 is perpendicular to the axis of the equipment body. It should be noted that the motion form of the first elastic body 211 and the second elastic arm 221 at the first-order natural frequency is swinging, rather than twisting. Since the vibration amplitudes of the laundry treatment equipment in all directions perpendicular to its axis are relatively large, therefore, the vibration modes of the first vibration absorber 21 and / or the second vibration absorber 22 at the first-order vibration mode can be more easily excited, facilitating the vibration absorber device 2 to exert a better vibration absorption effect.
[0076] Exemplarily, the swinging direction of the first elastic arm 211, the swinging direction of the first elastic arm 211, and the axis of the equipment body are arranged orthogonally to each other in pairs, that is to say, the three form a three-dimensional rectangular coordinate system. For example, the three are arranged along the above-mentioned XYZ rectangular coordinate system. Since the vibration amplitudes of the laundry treatment equipment in all directions perpendicular to its axis are relatively large, therefore, the vibration modes of the first vibration absorber 21 and the second vibration absorber 22 at the first-order vibration mode can be more easily excited, facilitating the vibration absorber device 21 to exert a better vibration absorption effect.
[0077] The specific type of the laundry treatment equipment is not limited, and it can be placed on the ground or hung on the wall.
[0078] Exemplarily, in the embodiments of the present application, a wall-mounted laundry treatment equipment is taken as an example for description, that is, the laundry treatment equipment is hung on the wall.
[0079] Exemplarily, the axis of the equipment body is generally along the front-back direction. Please refer to Figure 1 、 Figure 2 and Figure 3 , the equipment body includes a plurality of mounting bases 12 arranged at the rear end of the barrel assembly 11, and the equipment body is mounted to the wall through each mounting base 12. For example, the mounting base 12 is provided with mounting holes, and expansion bolts pass through the mounting holes and are implanted into the wall, so that the laundry treatment equipment can be hung on the wall.
[0080] Exemplarily, the vibration absorber device 2 is arranged on the mounting base 12. In this embodiment, the mounting base 12 has enough space to mount the vibration absorber device 2 and will not interfere with the barrel assembly.
[0081] During the operation of the equipment body, vibrations will occur, and the gap between the circumferential surface of the barrel assembly 11 and the box body will change. In this embodiment, the vibration absorption device 2 is not provided between the circumferential surface of the barrel assembly 11 and the box body. In this way, it is possible to avoid interference between the barrel assembly and the vibration absorption device 2 due to vibration.
[0082] Exemplarily, please refer to Figure 1 , Figure 2 and Figure 3 , a plurality of mounting bases 12 are arranged along the circumference of the barrel assembly 11. The mounting bases 12 protrude from the rear end surface of the barrel assembly 11. Each mounting base 12 and the rear end surface of the barrel assembly 11 jointly define an installation area. After the mounting base 12 is connected to the wall, the rear end surface of the barrel assembly 11 does not contact the wall, and a certain distance is maintained between the two.
[0083] It should be noted that the rear end surface of the barrel assembly 11 refers to the rear end surface of the outer barrel. The rear end surface can be an abstract plane, or can be jointly defined by the uneven structures on the surface of the rear end of the outer barrel 11 to form the abstract plane.
[0084] Exemplarily, the vibration absorption device 2 is arranged in the installation area and connected to the mounting base 12. In this way, the space of the installation area can be fully utilized.
[0085] Exemplarily, the drive assembly is arranged in the installation area. The specific structure of the drive assembly is not limited. For example, in some embodiments, the drive assembly further includes a flywheel and a belt. The flywheel is coaxially connected to the rotating shaft of the inner barrel, and the motor drives the flywheel to rotate through the belt, and the flywheel drives the inner barrel to rotate.
[0086] It can be understood that the first vibration absorber 21 and the second vibration absorber 22 can be independent of each other, or can be integrated together to form a whole.
[0087] Exemplarily, please refer to Figure 5 and Figure 6 , the vibration absorption device 2 includes a mounting plate 23. The first ends of the first spring arms 211 and the first ends of the second spring arms 221 are both connected to the mounting plate 23. The mounting plate 23 is used to fix the vibration absorption device 2 to the mounting base 12.
[0088] That is to say, the first vibration absorber 21 and the second vibration absorber 22 are integrated together through the mounting plate 23. In this way, during assembly, only the mounting plate 23 needs to be connected, which is convenient for assembly and improves the assembly efficiency of the assembly line.
[0089] It should be noted that the first spring arms 211 and the second spring arms 221 should maintain an appropriate angle to meet the requirement that the first oscillator 212 and the second oscillator 222 do not interfere with each other during the swinging process.
[0090] During the vibration process, the first elastic arm 211 and the second elastic arm 221 need to have good elasticity and appropriate stiffness. Therefore, exemplarily, both the first elastic arm 211 and the second elastic arm 221 are sheet metal parts.
[0091] The specific material of the first vibrator 212 is not limited and can be ceramics, metal, etc., as long as it has a relatively large mass density.
[0092] The specific material of the second vibrator 222 is not limited and can be ceramics, metal, etc., as long as it has a relatively large mass density.
[0093] In some embodiments, the vibration absorption device 2 is an integral structure, that is, the first elastic arm 211, the second elastic arm 221, the first vibrator 212, the second vibrator 222, and the mounting plate 23 are an integral structure. For example, an integral metal part.
[0094] Exemplarily, please refer to Figure 4 , Figures 7 to 12 , the device body includes an adapter 13. The mounting base 12 is connected to the vibration absorption device 2 through the adapter 13. The adapter 13 is convenient for adaptive adjustment according to the shape of the mounting base 12 and can meet the installation requirements of the mounting base 12 and the mounting plate 23.
[0095] Please refer to Figures 7 to 12 , the adapter 13 includes two ear plates 131 and a connecting plate 132 connected between the two ear plates 131. The connecting plate 132 is connected to the mounting base 12. For example, a plurality of first connection holes 131a are provided on the ear plates 131, and a plurality of second connection holes are provided on the mounting base 12. Screws or bolts pass through the first connection holes 131a and the second connection holes, so that the adapter 13 and the mounting base 12 can be firmly connected.
[0096] The middle part of the connecting plate 132 protrudes toward the side of the mounting plate 23. Thus, an avoidance recessed area 132b is formed on the side of the connecting plate 132 facing away from the mounting plate 23. The mounting plate 23 and the connecting plate 132 are stacked, and fasteners pass through the mounting plate 23 and the connecting plate 132. For example, the mounting plate 23 is provided with a first through hole 23a, and the connecting plate 132 is provided with a second through hole 132a. The fasteners pass through the first through hole 23a and the second through hole 132a. The fasteners can be bolts, screws, etc.
[0097] In this embodiment, on the one hand, the avoidance recessed area 132b can avoid the local structure of the mounting base 12, so that the ear plates 131 can be better attached to the mounting base 12; on the other hand, it is also convenient to avoid the fasteners. For example, the end of the fastener will pass through the connecting plate 132 and extend into the avoidance recessed area 132b, avoiding interference between the fasteners and the mounting base 12.
[0098] It should be noted that the installation position of the vibration absorption device 2 shall not interfere with the connection between the installation base 12 and the wall.
[0099] Exemplarily, the number of the vibration absorption devices 2 is multiple, and one vibration absorption device 2 is arranged on each installation base 12. In this way, the multiple vibration absorption devices 2 can further improve the vibration absorption performance.
[0100] The number of the installation bases 12 can be selected according to actual needs, as long as the equipment body can be reliably installed on the wall. For example, it can be two, three, four, five or more.
[0101] Exemplarily, please refer to Figure 1 、 Figure 2 and Figure 3 , the number of the installation bases 12 is four. One installation base 12 is arranged at each of the four corners of the equipment body, that is, one is arranged at the lower left corner, the lower right corner, the upper left corner, and the upper right corner respectively.
[0102] It should be noted that the shapes of the installation bases 12 at different positions may be different. Therefore, the shape of the adapter 13 needs to adapt to the shape of the installation base 12.
[0103] For example, please refer to Figure 7 and Figure 8 , for the adapter 13 in the first embodiment of the present application, its two ear plates 131 are substantially located in the same plane to fit on the local planar part of the installation base 12.
[0104] Please refer to Figure 9 and Figure 10 , for the adapter 13 in the second embodiment of the present application, its two ear plates 131 are substantially arc-shaped to fit on the local concave arc surface part of the installation base 12.
[0105] Please refer to Figure 11 , for the adapter 13 in the third embodiment of the present application, its two ear plates 131 are substantially flat but not in the same plane.
[0106] Please refer to Figure 12 , for the adapter 13 in the fourth embodiment of the present application, one of its ear plates 131 is substantially flat, and the other ear plate 131 is substantially arc-shaped.
[0107] Only exemplary descriptions of multiple embodiments of the adapter 13 are given above. It can be understood that the adapter 13 can also have other shapes.
[0108] In the description of the present application, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine the different embodiments or examples described in the present application and the features of the different embodiments or examples.
[0109] The foregoing is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.
Claims
1. A clothing treatment device, characterized in that, Comprising: The equipment body; A vibration absorption device (2) provided on the equipment body, the vibration absorption device (2) includes a first vibration absorber (21) and a second vibration absorber (22), and the target excitation frequency of the equipment body is within the frequency band between the first natural frequency of the first vibration absorber (21) and the first natural frequency of the second vibration absorber (22); The first vibration absorber (21) includes a first elastic arm (211) and a first oscillator (212), the first end of the first elastic arm (211) is fixed to the equipment body, and the second end of the first elastic arm (211) is connected to the first oscillator (212); the second vibration absorber (22) includes a second elastic arm (221) and a second oscillator (222), the first end of the second elastic arm (221) is fixed to the equipment body, and the second end of the second elastic arm (221) is connected to the second oscillator (222); the swinging directions of the first elastic arm (211), the second elastic arm (221), and the axis of the equipment body are arranged orthogonally to each other in pairs; The equipment body includes an inner cylinder, and the target excitation frequency is: the excitation frequency when the inner cylinder operates at a preset maximum dehydration speed.
2. The clothing treatment device according to claim 1, characterized in that, The first natural frequency of the first vibration absorber (21) is greater than the first natural frequency of the second vibration absorber (22) and does not exceed 1.1 times the first natural frequency of the second vibration absorber (22).
3. The clothing treatment device according to claim 1, characterized in that, The first natural frequency of the first vibration absorber (21) is within the frequency band of 1.01 to 1.1 times the target excitation frequency; and / or, the first natural frequency of the second vibration absorber (22) is within the frequency band of 0.9 to 0.99 times the target excitation frequency.
4. The clothing treatment device according to claim 1, characterized in that, The swinging direction of the first elastic arm (211) is perpendicular to the axis of the equipment body; and / or, the swinging direction of the second elastic arm (221) is perpendicular to the axis of the equipment body.
5. The clothing treatment device according to claim 1, characterized in that, The equipment body includes a barrel assembly (11) and a plurality of mounting bases (12) provided at the rear end of the barrel assembly (11), and the equipment body is mounted to the wall through each of the mounting bases (12); the vibration absorption device (2) is provided on the mounting bases (12).
6. The clothing treatment device according to claim 5, characterized in that, The vibration absorption device (2) includes a mounting plate (23), the first ends of the first elastic arm (211) and the second elastic arm (221) are both connected to the mounting plate (23), and the mounting plate (23) is used to fix the vibration absorption device (2) to the mounting bases (12).
7. The clothing treatment device according to claim 6, characterized in that, The equipment body includes an adapter (13), the adapter (13) includes two ear plates (131) and a connecting plate (132) connecting the two ear plates, the ear plates (131) are connected to the mounting bases (12), the middle part of the connecting plate (132) protrudes towards the side of the mounting plate (23), and the mounting plate (23) and the connecting plate (132) are stacked, and fasteners pass through the mounting plate (23) and the connecting plate (132).
8. The clothing treatment device according to claim 5, characterized in that, A plurality of the mounting bases (12) are arranged along the circumferential direction of the barrel assembly (11), and the rear end surfaces of each of the mounting bases (12) and the barrel assembly (11) jointly define a mounting area, and the vibration absorption device (2) is arranged in the mounting area.
9. The clothing treatment device according to claim 8, characterized in that, The equipment body includes a driving assembly for driving the inner barrel of the barrel assembly (11) to rotate, and the driving assembly is arranged in the mounting area.
10. The clothing treatment device according to claim 5, characterized in that, The number of the vibration absorption devices (2) is multiple, and one vibration absorption device (2) is arranged on each of the mounting bases (12).
Citation Information
Patent Citations
Damping equipment for rail transportation device
CN107143609A
Multi-frequency dynamic vibration adsorption method and multi-frequency power dynamic vibration absorber
CN111550514A